Patent Publication Number: US-2012037276-A1

Title: Flip-n-rip portable chainsaw mill

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates generally to a portable sawmill using a chainsaw for sawing logs into dimensional lumber. More specifically it relates to a sawmill using a chainsaw in a combination mounting and saw attachment framework that allows of a selectively chosen cutting of a log with the blade of the chainsaw being held in either a vertical or a horizontal planar attitude and the blade oriented for a longitudinal cutting along a length of the log; the mounting and attachment framework also allows of a modification for a use in sawmills other than the sawmill device of the invention by an addition of an accessory attachment section to a transverse guide rail assembly of the gantry of the invention. 
     2. Description of the Prior Art 
     A number of devices have been patented to serve these needs, including sawmills that use band saws, circular blade saws and chain saws as the cutting agent. These portable sawmills have come into greater use for the cutting of logs into lumber useable for building material as a means of eliminating the necessity of transporting harvested logs to a conventional saw mill for processing and as a means for small land holders and independent loggers to manufacture dimensional lumber from trees they have harvested. 
     SUMMARY OF THE INVENTION COMMENTS ON SPECIFIC PRIOR ART PATENTS MAJOR LIMITATIONS OF ANY SAWMILLS CUTTING ONLY IN ONE PLANE 
     All of the immediately following saw mills allow making only a horizontally or a vertically aligned cut—although some do have tilt mechanisms allowing of beveled cuts, none of them allow precisely cutting at opposed angles in both the vertical and the horizontal plane. The current invention presents a great improvement over these mills because, 1. with a mono-planar cutting mill, formation of a cant preparatory to creating “dimensional” lumber requires that the log be turned, leveled and stabilized three times. Once a cant is formed, further binding and turning operations are required for creating “dimensional” lumber. 
     These operations lead to increased risk of injury, wasted labor time, decreased accuracy of cutting to true dimensional size and potentially decreased orthogonality of cut pieces due to the difficulty of re-situating the log at exact 90.degree angles during successive turning operations. 
     Another deficiency of many of these mono-planar cutting mills is that and no partial depth cuts can be made. 
     With a mill providing a positioning of a saw blade in a bi-planar, vertical and horizontal planar attitude, and with the saw blade in an orientation for a longitudinal cutting of a log, both Cants and completed dimensional lumber cuts can be made with a parent log left in an original, and unturned position within the mill. 
     None of the sawmills provides a means for creation of a fine tuning of the vertical or horizontal planar attitude of the saw blade such as is provided in the current invention. The advantage of this capability as it is provided in the current invention is that such fine tuning allows of a creation of a greater orthogonality of the cut pieces of wood. 
     Some of the mills provide that the log to be cut rests on the base framework of the mill, others have the log resting within but not upon the mill framework. The current invention is arranged with an extensible modular base frame in which the log rests within the base framework but does not rest upon any portion of the base framework of the sawmill; with no log weight on the frame members there are reduced stresses on the framework, allowing of a use of a lighter and therefore more portable framework; and, there is a reduced chance of distortion of the framework; also, the log can absorb saw vibrations without transferring them to the mill works if the log is not on the base frame. 
     Another important feature found in the current invention is a dual acting remote safety switch and throttle trigger control means which utilizes a control cable controlled from a single control handle to provide a disengagement and a reactivation of a built in safety switch and an activation of a throttle control trigger of the chain saw; a full speed control from a slow idle to a full speed throttle setting is allowed; thus providing an advantage by an allowance of a use of a higher speed of rotation for cuts in a harder wood, or a slower blade rotation in a softer wood source. 
     A mechanically assisted gantry travel component of the present invention utilizes a two speed transmission in concert with a system of pulleys, gears and ropes to provide allowance of a slower speed more suitable for a cutting run of a blade through a log, or, a double speed for use during a non-cutting, return movement to a base end of the log; this results in a considerable saving of time in the course of a work run. 
     The present invention also uniquely provides an automatic control of the vertical level of the saw carriage assembly such that a series of successive cuts made in a horizontal plane of cutting can be made without a need for remeasurement or checking log caliper indicators; the major advantages include 1. improved accuracy of the thickness of sections of dimensional lumber since remeasurement errors are eliminated; 2. saving of time and labor. 
     An integral lateral position locking assembly of a body section of the invention allows a creation of a fixation of the saw at any given point in a right to left lateral direction across a full width of the gantry with the blade in either the vertical or horizontal cutting plane. The lock assembly is engaged and disengaged by simply tilting a handle of a toggle lock assembly. Another advantage is that while making a horizontal cut, the lock is left in a locked position during only about an inch of initial cutting following which it is unlocked, the pull of the saw blade then self-adjusts the saw against the side of the log in accord with any alteration of the log surface; this assures that a motor end of the sawblade bar is always involved in the cut, improving the quality of the cut surface. A further advantage is that with the saw against the side of the log throughout the cut, a thrust of the saw created by a rotation of the saw blade is absorbed by the log rather than being transferred to the gantry frame; this transfers less stress to the gantry and results in a diminution of vibration that in turn leads to a smoother and more accurate cut in a piece of dimensional lumber being milled. 
     SUMMARY COMMENTS ON SPECIFIC PRIOR ART 
     In the following Summary Comments any distinguishing feature that has been covered by the preceding comments will not be dealt with again in the discussion of the following patents; the comments will only address major distinctions between any claimed matter in the named prior art and an aspect of the current invention in which the claimed matter of the current invention represents an improvement over the prior art. 
     U.S. Pat. Application No. 070234689 (DALE): Horizontal cut chain saw: SUMMARY COMMENTS: Manual Push for Travel; claims a remote throttle control—BUT no remote control of Safety switch is taught or claimed; no automatic vertical height return for successive cuts in horizontal plane; log to be cut rests on base frame of device. 
     U.S. Pat. No. 4,640,170 [BAKKEN] a portable horizontal cut Chain saw with both ends of the blade bar clamped within the gantry frame; Gantry has sliding foot plates for movement along a leveled ground surface—this mitigates against accuracy of cutting lumber to true dimensional sizes since absolute leveling of the land is not likely; vertical height adjustment is taught; a pair of interconnected screw drive rods having their lower ends affixed atop the two bar clamp assemblies is the height adjusting means, other than the inherent resistance of those threaded elements no provision is taught/claimed for holding the saw at a given vertical height; No automatic vertical height return for successive cuts is taught; No remote throttle and safety control switch element is taught; No mechanically assisted travel control mechanism is taught. 
     U.S. Pat. No. 3,926,086 [CRANE] horizontally cutting chainsaw. SUMMARY COMMENTS: A remote trigger disengagement control is taught, when the saw reaches the end of a cutting run, a detent that was manually pre-set to over-ride the chain saw safety device trigger is disengaged, the motor returns to idle speed and the safety switch is in an engaged position. No provision is taught for a range of throttle speed control by a remote throttle device; no provision is taught for remote reactivation of the safety switch and throttle trigger. A mechanically assisted travel mechanism taught does not have 2-speed gearing as does that of the incident invention, but, the rotating drive handle is at the end of the sawmill frame as opposed to the current invention where the operating handle is associated with the saw carriage section of the gantry, thereby providing immediate viewing of the log section being cut and allowing for speed control based on immediate observation of harder sections, burls, etc. The log rests on the base frame of the mill. 
     U.S. Pat. No. 5,243,892 [JINDRA] a vertical cut chain saw; SUMMARY COMMENTS: No provision is taught for setting and maintaining a vertical depth of cut other than a full depth cut. An extensible, modular base is taught, however, the log is supported on the end sections of the base of the sawmill. No remote throttle/safety switch is taught, nor is a mechanically assisted travel mechanism taught; the chainsaw is supported by a transversely slideable holder on a top cross piece of the saw carriage frame such that the chain saw can be positioned at various points across the width of the sawmill by a chain drive mechanism. 
     U.S. Pat. No. 3,889,560 [MACFADYEN] teaches a horizontal chain saw mill. SUMMARY COMMENTS: log is supported on a cross frame of the mill; the chain saw attachment means is undisclosed; means control the vertical height of the cradle and control its location across the diameter of the wood piece to allow cuts of differing thickness. The vertical control means taught involves several manually performed operations that must be performed prior to being able to use a moveable endless chain and geared rod arrangement as a means to alter and re-stabilize the level of the blade&#39;s cutting plane; 
     U.S. Pat. No. 5,784,941 [SANBORN] chain saw clamped vertically tip upwards within a saw carriage. SUMMARY COMMENTS: As opposed to the current invention, the setworks for adjusting the saw position for lateral position of cut is separate from the attachment means holding the saw to the carriage. A throttle activator is taught that keeps the saw motor at full cutting speed during a cutting run, an end of run device automatically returns the saw to idle speed during the return pass; no direct throttle control of the cutting speed by the operator is taught. No remote operation of the chain saw safety switch is taught. Log rests on the mill frame based member. A single speed travel mechanism is described. 
     U.S. Pat. No. 4,307,641 [SHAPLEIGH] horizontal cut chainsaw. SUMMARY COMMENTS: The log rests within and is supported by the mill frame. Means for altering the vertical elevation of the saw blade comprise a pair of rotatable vertically oriented adjusting screws, each surmounted by a control handle. Full through cuts are the only cuts allowed; manual sliding means of the gantry are taught, but no mechanically augmented dual speed control is taught. 
     U.S. Pat. No. 4,300,428 [WOODLAND] vertical cut chain saw. SUMMARY COMMENTS: log is held on the mill frame structure; the saw carriage allows lateral adjustment of the saw position but is restricted to the use of predetermined lock points using a series of laterally spaced apertures to provide the width adjustment stopping points; the current invention, advantageously allows lateral locking at any point along the full lateral width of the gantry. A pair of scissor jacks serving as the log support provide vertical control of the cut by elevation of the log itself, the saw carriage remaining at a given height; vertical or tilted angle cuts are possible, but cutting in a 90 degree opposed vertical or horizontal plane is not taught. 
     U.S. Pat. No. 7,444,912 [FENTON] a vertical cut circular blade mill using two cutting blades set to revolve in opposite directions. The blades are mounted on a carriage that allows inversion of the saws such that at the end of the first cut, the saw is flipped over and the opposite rotating blade can make a cut on the return movement of the saw carriage along the length of the log. SUMMARY COMMENTS: As with other blade saw mills, blade radius limits the size of log that can be cut with a device such as Fenton&#39;s while still maintaining portability of the unit; a 15″ log requiring a blade of at least 3 foot diameter, etc. Blades of this type are expensive and when they require sharpening they must be sent to special saw sharpening facilities that can handle the larger size blades. Replacement blades are not readily available at everyday retail sources. Log rests on the mill frame. The blade carriage unit remains at a given height and vertical height control is via altering the log support height. 
     U.S. Pat. No. 4,711,032 [RICKMERS] horizontal cutting band saw. SUMMARY COMMENTS Means of altering the vertical level of the saw blade comprise a control handle affixed to a threaded screw attached below to the mill base such that turning the handle moves the upper, saw support element to or from the base elements of the mill; making an initial cut, requires placement and leveling of a pair of externally applied leveling rails; following the first cut the leveling rails are removed and the saw carriage rides on top of the log surface itself. 
     Patents Teaching Bi-Planar Cutting 
     U.S. Pat. No. 5,213,020 [ELGAN] band saw that cuts bi-directionally in both the horizontal and vertical cutting planes. SUMMARY COMMENTS: The log sits on lower mainframe of mill; As opposed to the hinge action of the chain saw positioning component of the current invention wherein the hinge rotation that provides for a 90.degree planar blade rotation is along the longitudinal axis of the Mill frame/Gantry, the hinge action in Elgan occurs along the transverse axis of the mill frame/gantry—so Elgan&#39;s cuts are horizontal along the length of the log but in the vertical plane the cut is transverse across a diameter of the log; the current invention allows full length horizontal and vertical cutting, allowing making multiple sections of dimensional lumber with far fewer cuts than Elgan. The vertical elevation of the saw carriage is done with a hydraulically driven pair of unending chains passing around pulleys at top and bottom of mill gantry. A hydraulic controlled chain drive is used for gantry travel along mill base. 
     U.S. Pat. No. 5,819,626 [LUCAS] a blade-saw mill making both horizontal and vertical cuts; SUMMARY COMMENTS: All limitations of blade saws in general apply to this device. The vertical level control means of the saw carriage is by four slidably mounted collars, mounted on uprights of the two vertical end frames of the mill framework; turning a control handle with a rope wound on a top axle of the end frame at both ends of the mill is required to move a pair of longitudinal guide rails up or down for vertical level control. No automatic sequential depth of horizontal cut is taught; no integral lateral positioning locking is taught. As with Elgan, Lucas provision for planar blade rotation occurs along the transverse axis of the mill frame/gantry creating the same problems listed prior for Elgan. 
     U.S. Pat. No. 4,584,918 [STUBBE] blade-saw making both horizontal and vertical cuts. SUMMARY COMMENTS: All general limitations of blade saws apply. The log is supported on the mill base frame. As an example of the limitation of log sizes cuttable by blade saws, Stubbe teaches an ability to cut logs up to a nominal dimension of six inches by six inches by using a sixteen inch blade; this requires an 85 pound 10 horsepower motor—using a 24 inch blade requires an 18 horsepower motor. Lifting and fitting such motors into place in rough terrain where they are likely to be used is one problem, another is, the effects of the heavy motor weights on the side cantilevered longitudinal rails of the mill. There is a rope and pulley vertical adjustment mechanism, however no automatic return to a selected depth of horizontal is taught. Both horizontal and vertical plane longitudinal cuts are possible; however, the saw automatically repositions such that traverse away from the operator is in the vertical plane and the return is in the horizontal plane—this means that only a partial depth cut resulting in one piece of dimensional lumber can be made with each full passage of the saw out and back—as opposed to the current invention where, following a series of horizontal cuts at a preferred dimension, each subsequent vertical pass creates multiple sections of dimensional lumber. 
     General Summary Comments on Bi-Planar Cutting Band and Blade Sawmills 
     Band saw setups allowing of Bi-planar cutting would require interrupted cutting and removal of boards during the cutting operation in logs having a diameter greater than the width of the gap between the cutting aspect and the return aspect of the band saw blade; making multiple dimensional sections in a log of any greater diameter requires that cut wood must be removed during the sawing operation rather than following a full pass along the log; they also require at least two turnings, repositionings and levelings of the log after making an initial top cut in order to create a cant. 
     One suggested advantage of using a band saw is that band saws have a thinner kerf, and thus leave less waste due to blade width loss, however other sources cite that it is hard to keep a band saw blade tracking a straight line through a round log, and grain resistance can lead to boards having a wavy or undulating surface when they are cut by band saw blades. This leads to waste due to the inaccurate dimension of the finished lumber. Band saws are high maintenance and maintaining proper blade tension is critical. 
     Blade saw mills, even if capable of cutting both vertically and horizontally are limited to cutting logs within slightly less than their blade diameter; to cut larger logs, very large blades must be used, these larger blades require more substantial and stronger motors and frameworks, increasing the weight and difficulty of transport, set up and disassembly of such units as well as the cost of the mill. 
     Basic Advantages of Chain Saws Over Band and Blade Saws 
     Relative to a saw arrangement that allows cutting in only one planar arrangement, or to either a blade of band saw that allows bi-planar cutting, a chain saw arrangement that allows cutting in both the vertical and horizontal plane along the longitudinal length of a log allows for much more rapid production of dimensional lumber because a successive series of horizontal through cuts of a given thickness could be followed immediately by a series of vertical through cuts at a given desired width to create a full stack of boards at each vertical pass down the length of the log without the need to band and turn the mass of boards at any time. 
     Another advantage of the chain saw arrangement of the incident application is that it also allows for cutting a series of partial depth cuts at one or differing widths to be followed by a horizontal through cut at a desired thickness, thus allowing sequential creation of dimensional lumber of differing dimensions from the same log and with a minimal number of cutting passes as well as no turning of the cant or log. 
     Other Special Features of the Present Invention 
     Vertical Level Control Mechanisms 
     The vertical level control mechanisms of all cited patents and applications fall into one of the following categories of mechanism. 1. Threaded rod and crank handle, 2. gears with threaded rod and/or pull chain, 3. threaded scissor jack log support, pulley, rope and crank handle, stationary saw platform with log platform that is vertically adjustable, hydraulic powered continuous chain rotating upper and lower pulleys with a chain affixed to a slidable frame element. 
     In the present invention, as will be described later the establishment of the vertical level of the cutting blade is achieved by the use of a unique stationary chain and climbing sprocket arrangement; the arrangement has a positive lock ability to hold the blade stably at any given level of vertical orientation within the sawmill apparatus. This vertical level control is functional with the saw blade being held in either a vertical or a horizontal orientation within the sawmill. 
     Synopsis: Description of the Invention 
     The present invention comprises a portable log cutting apparatus and system for a making of dimensional lumber from a log or other material suitable for cutting by a chainsaw; the chainsaw being held in a readily detachable but secure affixation to a body section of a chain saw attachment and positioning carriage framework assembly by a chainsaw bar attachment assembly component of the carriage framework assembly; the saw carriage framework assembly being in a situation within a gantry portion of a sawmill apparatus. 
     The carriage framework assembly is designed such that a hinged saw blade orientation component of a body section of said framework allows of a selectable positioning and maintenance of a planar orientation of a blade of the chain saw in either of a vertical or a horizontal planar cutting attitude, with a saw blade oriented for making a longitudinal cut along a log; thus allowing a user to make a selectively chosen horizontal or vertical cut or series of cuts in a longitudinal direction into and through the log or other suitable substrate material. 
     The body section of the carriage framework further providing for a moveable attachment of the carriage along a pair of transversely situated guide rails of a transverse guide rail assembly of said gantry; said transverse guide rail assembly allowing of a movement of or alternatively, a fixation of the chainsaw at a selected horizontal position within the full width of the gantry. 
     A vertical level control assembly allows a movement of or alternatively, a fixation of the chainsaw at a selected vertical level within a full height of the gantry of the sawmill. 
     Acting in combination, the saw carriage assembly the vertical level control assembly and the transverse guide rail assembly uniquely create an allowance of an ability to make either a vertically oriented cut or series of cuts, or a horizontally oriented cut or series of cuts, of a through cut or partial depth cut nature in a selectably alternating manner in a longitudinal direction along a full length of the log or other substrate material with the log or other substrate being left in an unturned and original position within the sawmill apparatus, and, further providing an ability for a making of a cant from the log with the log being left in its unturned and original position within the sawmill apparatus; 
     A base section of the sawmill apparatus is of a modular nature and is extensible to a full length of the log or other chainsaw cuttable material. 
     An automatically regulated control of a thickness of a horizontally oriented cut is afforded by a horizontal cut thickness gauge assembly and provides for a repeatable dimensional thickness of the cut pieces, and a saving of labor time by eliminating any need for remeasurement/calibration between cutting passes. 
     A dual acting remote throttle control allows a full speed range remote control of the chainsaw throttle while also affording a remote safety lock control function of the chainsaw. 
     A mechanically assisted dual speed bi-directional gantry travel mechanism is used. 
     The carriage assembly and a typical sawmill apparatus necessary for its use can be carried, set up and operated by one person and is transportable in a van, or a pickup vehicle. 
     A more complete description may be found in the appended claims. 
     OBJECTS OF THE INVENTION 
     It is an object of this invention to provide a sawmill device that allows of a bi-planar cutting in a longitudinal plane of cutting of a log or other material suitable for cutting by a chainsaw, into a series of specifically sized dimensional sectional pieces by using a chainsaw that is mounted on a carriage that allows of a cutting in both a horizontal and a vertical plane of orientation. 
     Another object is to provide a sawmill device in which the distorting effects of saw blade vibration are minimized, thereby helping to provide maximal accuracy of cutting lumber to dimensional size, and, in which a saw blade attachment device allows the log being cut to absorb the saw thrust, thus providing a reduction of strain on the sawmill framework. 
     Still another object is to provide a saw carriage and blade orientation device allowing biplanar cutting, which said device is adaptable for use on other sawmill frameworks. 
     It is a further object to provide a device framework that easily allows a manual changing of a planar attitude of a cutting head without the use of tools while maintaining orthogonality of a support framework of the device, and which said device provides a fine-tuning mechanism allowing of optimizing the blade cutting angle within either of a horizontal or a vertical cutting attitude. 
     Another object is to provide a means to remotely and fully operate both a saw throttle and a safety switch feature associated with a chain saw&#39;s throttle controls. 
     A further object is to provide a framework and sawmill apparatus that is easily transported in a pick up or such vehicle, and that can be set up and operated by one person. 
     Another object is to provide a device that minimizes the time and effort of squaring a log to form a cant prior to a cutting of a lumber or other such substrate to dimension, thus saving time and energy and providing maximal accuracy of cuts made in the opposed vertical and horizontal planes. 
     Another object is to provide a mounting system for the chain saw that allows a quick disconnect of the saw so that the saw can be used temporarily for purposes of a trimming or bucking of a parent wood source and then returned to the mill for use. 
     Another object is to provide a device allowing the use of both a relatively small or a large chain saw. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1   a  presents an oblique view of the carriage viewed from a right superior aspect of the device in accordance with the invention; the carriage is arranged with the saw blade orientation section prepared to situate the saw blade in a horizontal cutting position. 
         FIG. 1   b  present a horizontal rear end view with a portion of a chain saw seen situated in a horizontal cutting attitude. 
         FIG. 2  presents an “exploded” view of the same oblique view as was seen in  FIG. 1   a ; the basic body; integral lateral lock mechanism; hinged, saw blade orientation assembly and the chainsaw bar attachment component are distinguished between. 
         FIG. 3  presents a series of drawings:
         Upper Left drawing: oblique view of body with integral lateral locking mechanism and all external attachment sections removed; as seen from the rear looking down onto the right side and the base of the body section.   Upper Central drawing: same segment as seen from a straight horizontal rear view.   Upper Right drawing: Oblique view of the L shaped hinged attachment plate section shown with the base section vertical and the right side section horizontal as seen from the right rear and superior to the internal aspect of the side wall section.   Lower Left drawing: A horizontal rear end view of the body, as was shown in the Upper Central view, with the additional inclusion of the L shaped hinged attachment plate. Line A—A represents a vertically oriented front to back longitudinal cut though a central line of the body   Lower Central drawing: A view of the internal aspect of the right side of the body in accord with the section depicted in the lower left drawing, with the rear of the body rotated to the right in the drawing.   Lower Right drawing: an oblique view from a right rear superior aspect, showing the body with the hinged attachment plate positioned such that the saw blade (not shown) would be oriented for cutting in the perpendicular plane.       

         FIG. 4   a : an exploded view of the components comprising the hinged attachment plate and the saw attachment components of the device as seen from a right rear superior oblique aspect. 
         FIG. 4   b  Top view: a bottom view looking up through the chainsaw bar attachment component.
         Central view: side view of the chainsaw bar attachment component.   Bottom view: frontal view of the chainsaw bar attachment component showing a section of the bar and blade contained within the clamping pads.       
         FIG. 5   a : The sawmill apparatus, including the carriage device of the current invention as seen in an end view from the rear. 
         FIG. 5   b : The sawmill apparatus, including a base section, a log represented in a form of a cant; a gantry, a carriage device of the current invention as seen from a rear right superior viewing point. NOTE: the front end section is truncated but is an exact mirror image of the portion shown. 
         FIG. 5   c  A left rear superior oblique view of the basic gantry frame and left rear gantry subframe components only; the basic gantry frame is shown exclusive of the gantry top forward travel section components. 
         FIG. 5   d : a rear view of the Gantry Control Handle subframe separated from the gantry frame. 
         FIG. 5   e : a view of the Sawmill Apparatus Base Frame Section looking down from an oblique right superior vantage point. 
         FIG. 5   f : A view of the base frame with a rear and a front non-log bearing section fully assembled; a right side gantry track section of a log containing section of the base frame is shown assembled but disassociated from the base frame as it would be seen prior to loading a log within a confine of the base section. 
         FIG. 5   g : An exploded view of the same parts seen in  FIG. 5H . 
         FIG. 5   h : A detail of the interconnection of a pair of Base Frame longitudinal Guide Rails, and of two sets of the Support and Leveling Feet of the base framework 
         FIG. 6   a : A right rear superior oblique view of the carriage assembly of the invention with the chainsaw attached and situated in a horizontal cutting position. 
         FIG. 6   b : A right horizontal side view of the carriage assembly of the invention with the chainsaw attached and situated in a perpendicular cutting position. 
         FIG. 7   a : A left rear superior oblique view of the wheel fenders and basic vertical frame members of the gantry, and of the frame members of the transverse guide rail assembly members. 
         FIG. 7   b : A left rear superior oblique view depicting a portion of a set of four basic vertical gantry frame members and their relationship to the components of a stationary vertical climbing chain mechanism that raises and lowers a transverse guide rail assembly within the gantry framework. 
         FIG. 7   c : A close up view of the stationary Vertical Climbing Chain gear boxes, handle and associated members of the transverse guide rail assembly. 
         FIG. 7   d : Presents an oblique view from a left rear superior aspect looking down towards the gantry with the removable components of the transverse guide rail assembly that bear the saw carriage component withdrawn from the gantry, as though preparatory to a modification of the assembly for a use in a sawmill device other than that of the incident invention. 
         FIG. 7   e : Presents an oblique view from a rear right superior vantage point looking down at a modified guide rail assembly, bearing the saw carriage component of this invention and situated with a set of accessory wheels of the modified guide rail assembly situated on the longitudinal rails that extend above and along a length of a log to be cut within a sawmill device other than that of this invention; the view is rotated approximately 90.degree clockwise to the view depicted in  FIG. 7   d.    
         FIG. 7   f : presents an exploded view showing details of a portion of the carriage assembly and a set of modification connection components, including a set of wheels that allow a use of the transverse guide rail assembly in other sawmill devices. 
         FIG. 8   a : A left side rear superior oblique view depicting a left wheel fender and the left end vertical gantry frame members and their relationship to the components of the left end stationary vertical climbing chain mechanism components. 
         FIG. 8   b : presents a close up of the left rear vertical climbing chain sprocket, a section of the left climbing chain axle and the upper and lower climbing chain sprocket idler wheels. 
         FIG. 8   c : Presents an oblique view of the left end cross chain assembly as seen from a rear right superior viewing aspect. 
         FIG. 9   a : As seen from a front right superior aspect, presents an oblique view of the carriage with a vertical cutting guide assembly in place and with a foot section of the guide lowered to a level for locking the carriage at a level providing a cut of a predetermined thickness before a subsequent cut is made. 
         FIG. 9   b : As seen from a front right superior aspect, presents an oblique view of the carriage assembly with the vertical cutting guide assembly in place and with a foot section of the guide elevated and locked at a level above the log as during a cutting operation. 
         FIG. 10   a : presents a left side view of the saw handle and the saw handle borne components of a dual acting remote chainsaw safety switch and throttle trigger control assembly. 
         FIG. 10   b : presents a view of the left gantry subframe borne components of the dual acting remote chainsaw safety switch and throttle trigger control assembly. 
         FIG. 11   a : presents a schematic diagram of a Dual Speed Gear box assembly and of a connection of the Gear box assembly to a connecting gear of a Gantry Top Travel Component of a mechanically assisted travel control mechanism of the gantry as taught in this invention. 
         FIG. 11   b : presents a diagrammatic top view of a set of Gantry Travel Control Axles and an associated set of gears and connecting chains. 
         FIG. 12 : presents a diagrammatic representation of the Travel Control gear box, gantry top travel control axles and associated gears and attachment members, including a set of travel control ropes and rope attachment cleats. 
     
    
    
     DESCRIPTION OF A PREFERRED EMBODIMENT 
     Sawmill Basics and Overview of the Invention 
     The present invention, a combination chainsaw attachment and positioning device,  100   FIG. 9   a  comprises in part a chain saw carriage assembly  100   a    FIG. 1   a  designed to allow use of a chain saw  400   FIG. 6   a  within a sawmill apparatus  500   FIG. 5   b  to make either a vertically oriented cut or series of cuts  501   FIG. 5   b , or, a horizontally oriented cut or series of cuts  502   FIG. 5   b  in a selectably alternating manner with a saw blade disposed for cutting longitudinally in a log or another substrate material cuttable by a chainsaw  503   FIG. 5   a , and doing so with said log or other substrate material being left in an unturned and original position within said apparatus; said attachment and positioning assembly further providing an ability for a making of a cant  503   FIG. 5   b  from said log with said log being left in said unturned and original position within said apparatus; 
     said chainsaw carriage assembly also allowing of a controlled and accurately maintained, variable but fixed depth of cut and variable but fixed width of cut of said chain saw in a perpendicularly oriented plane, or a horizontally oriented plane; 
     said ability of being able to make cuts in an alternating manner of cutting between an opposed pair of directions, perpendicular or horizontal, results in an ability to create multiple sections of dimensional lumber with a single pass of said chain saw following an appropriate number of preparatory cuts in an opposed plane of orientation, thereby allowing creation of said multiple sections of dimensional lumber with a minimal number of sawing operations. 
     Said chainsaw of said sawmill apparatus comprises in part a saw motor  401   FIG. 6   a  and a saw motor end  402   FIG. 6   a , a saw handle  406   FIG. 6   a , a saw blade bar  403   FIG. 6   a  bearing a saw blade  404   FIG. 6   a  and a saw bar nose end  405   FIG. 6   a;    
     The Gantry 
     said sawmill apparatus further comprises in part a gantry  510   FIG. 5   b , which said gantry partially comprises a gantry main frame  510   f  best seen in  FIG. 5C  said main frame comprising in part a set of four vertical main frame supports, a rear left side main frame vertical support  510   a    FIG. 5   c , a front left side main frame vertical support  510   b    FIG. 5   c , a rear right side main frame vertical support  510   c    FIG. 5   c  and a front right side main frame vertical support  510   d    FIG. 5   c;    
     each of which said vertical main frame supports is solidly affixed to one of a set of four vertical level adjustment assembly OC tubes ( 14   a , 14   b , 14   c , 14   d , best seen in  FIG. 7   a ), a left rear vertical level adjustment assembly OC tube  14   a    FIG. 7   a , a left front vertical level adjustment assembly OC tube  14   b    FIG. 7   a , a right rear vertical level adjustment assembly OC tube  14   c    FIG. 7   a  and a right front vertical level adjustment assembly OC tube  14   d    FIG. 7   a;    
     said main frame vertical supports being held in an attachment with each other in such a manner as to form a rectangular top frame of said gantry main frame by a pair of transverse horizontal top main frame members ( 513 , 514   FIG. 5   c ) and three longitudinal horizontal top main frame members ( 511 , 512  and  531   FIG. 5   c ); 
     said longitudinal horizontal top main frame members comprising a left longitudinal horizontal top main frame member  511 ,  FIG. 5   c , a right longitudinal horizontal top main frame member  512 ,  FIG. 5   c , and a mid gantry longitudinal horizontal top main frame member  531 ,  FIG. 5   c    
     said transverse horizontal main frame members comprising a top rear transverse horizontal main frame member  513   FIG. 5   c  and a top front transverse horizontal main frame member  514   FIG. 5   c;    
     said top rear transverse horizontal main frame member is attached at a topmost level and in a reinforced manner to said left end main frame member  510   a ; said reinforcement of said attachment is afforded by a roughly triangular rear left side transverse reinforcement plate  516   a    FIG. 5   c ; said top rear transverse horizontal main frame member  513  further being attached at a topmost level and in a reinforced manner to said right end main frame member  510   c ; said reinforcement of said attachment is afforded by a roughly triangular rear right side transverse reinforcement plate  516   c    FIG. 5   c;    
     a left end of said top front transverse horizontal main frame member  514  is attached at a topmost level and in a reinforced manner to said front left end main frame member  510   b ; said reinforcement of said attachment being afforded by a roughly triangular front left side transverse reinforcement plate  516   b    FIG. 5   c;    
     a right end of said top front transverse horizontal main frame member  514  being attached at a topmost level and in a reinforced manner to said front right end main frame member  510   d ; said reinforcement of said attachment being afforded by a roughly triangular rear right side transverse reinforcement plate  516   d    FIG. 5   c;    
     said left longitudinal horizontal top main frame member  511   FIG. 5   c  is welded at a front end to a rear facing aspect of said front transverse horizontal main frame member  514 , and welded at a rear end to a forward facing aspect of said rear transverse horizontal main frame member  513 ; 
     said top mid gantry longitudinal horizontal frame member  531   FIG. 5   c  is welded at a front end to a rear facing aspect of said front transverse horizontal main frame member  514 , and welded at a rear end to a forward facing aspect of said rear transverse horizontal main frame member  513 ; 
     said right longitudinal horizontal top main frame member  512   FIG. 5   c  is welded at a front end to a rear facing aspect of said front transverse horizontal main frame member  514 , and welded at a rear end to a forward facing aspect of said rear transverse horizontal main frame member  513 ; 
     said rear left side vertical main frame support member  510   a  and said front left side vertical main frame support member  510   b  each terminating below in a welded attachment to a left side fender member  517   FIG. 5   c ; said fender member partially comprising a three sided inverted U shaped tubular member having an open side facing downward  517   a    FIG. 5   c , said tubular member containing a pair of gantry wheel and axle sets, a rear left gantry wheel and axle  517   b    FIG. 5   c  and a front left gantry wheel and axle  517   c    FIG. 5   c;    
     said rear right side vertical main frame support member  510   c  and said front left side vertical main frame support member  510   d  each terminating below in a welded attachment to a right side fender member  518   FIG. 5   a ; said fender member partially comprising a three sided inverted U shaped tubular member having an open side facing downward  518   a    FIG. 5   a , said tubular member containing a pair of gantry wheel and axle sets, a rear right gantry wheel and axle  518   b  and a front right gantry wheel and axle  518   c;    
     the whole being so arranged and affixed in and between each other as to form a stable superstructure situated upon and capable of being moved in a forward or a backward manner along a pair of longitudinal gantry tracks  505   a,b,c,d,e,f    FIG. 5   e  of a base section  580   FIG. 5   e  of said sawmill apparatus upon which said base section said log or said other chainsaw cuttable substrate is held and stabilized. 
     Gantry Travel Components of Upper Gantry Frame 
     A pair of upper gantry travel drive axles  520 , 524   FIG. 5   b  a front upper gantry travel axle  520   FIG. 5   b  and a rear upper gantry travel axle  524   FIG. 5   b  are seen spanning a full left to right width across said gantry between said top rear transverse horizontal main frame member  513  and top front transverse horizontal main frame member  514 ; said pair of upper gantry travel axles each being held in a rotatable position within a set of pillow blocks; a left end upper rear gantry travel axle pillow block  525   FIG. 11   b , a mid axle upper rear gantry travel axle pillow block  526   FIG. 11   b  and a right end upper rear gantry travel axle pillow block  527   FIG. 11   b  of said upper rear gantry travel axle  524 ; and a left end upper front gantry travel pillow block  521   FIG. 11   b , a mid axle upper front gantry travel pillow block  522   FIG. 11   b  and a right end upper front gantry travel pillow block  523   FIG. 11   b  of said upper front gantry travel axle  520 ; 
     Said left end pillow blocks  521  and  525  being bolted to a top surface of said top left side horizontal main frame member  511  and said right end pillow blocks  523  and  527  being bolted to a top surface of said top right side horizontal main frame member  512 ; said mid axle pillow blocks  522  and  526  being bolted to a top surface of top mid frame horizontal main frame member  531 ; 
     a right end of said upper front gantry travel axle  520  terminates in a right front upper travel axle sprocket  530   FIG. 11   b ; a right end of said upper rear gantry travel axle  524  terminates in a right rear upper travel axle sprocket  529   FIG. 11   b ; a left end of said upper rear gantry travel axle  520  terminates in a left rear upper travel axle sprocket  532   FIG. 11   b.    
     Gantry Control Handle Subframe (For Travel and Trigger Handles) 
     Said rear left side vertical main frame support  510   a    FIG. 5   c  bearing and being welded to a pair of left rear subframe horizontal connector members  541   a , 541   b    FIG. 5   d ; an upper, left subframe horizontal connector member  541   a    FIG. 5   d  and a lower, left subframe horizontal connector member  541   b    FIG. 5   d , which said connectors comprise part of a left rear vertical subframe assembly  541   FIG. 5   d .; said subframe assembly  541  further comprising a vertically positioned OC tube  541   c    FIG. 5   d  with an opening of said OC tube  541   d    FIG. 5   d  facing rearward, said OC tube being affixed above at a topmost level to a lateral most end of said upper connector  541   a  and at a bottom most level to said lower connector  541   b , forming thus a framework ( 541   a,b,c )  FIG. 5   d ; of said vertical subframe assembly  541 ; 
     Mechanically Assisted Gantry Travel Control Assembly 
     Said left subframe assembly  541   FIG. 5   d  also further partially comprises a mechanically assisted travel control assembly of said gantry, which said assembly comprises in part a dual speed transmission assembly and an upper gantry travel axle component as well as a gantry travel rope component; 
     a gantry travel control handle assembly  89   FIG. 5   d ; comprises a horizontally situated forward travel control handle handgrip section  89   a    FIG. 5   d , which, following a 90 degree angle bend terminates as a vertically situated forward travel control handle axle  89   b    FIG. 5   d , which said axle  89   b  passes into and is in a rotatable affixation within a travel control handle attachment bracket  89   c    FIG. 5   d  which said bracket is affixed to said vertically positioned OC tube  541   c  of said left vertical subframe assembly  541  of said gantry; within a confine of said bracket  89   c;    
     said control handle axle  89   b  bears a set of three control handle axle gears ( 90 , 91 , 92   FIG. 11   a ; a larger, laterally situated high speed gear  90   FIG. 11   a , a mid axle low speed gear  91   FIG. 11   a  and a most centrally situated vertical travel chain drive gear  92   FIG. 11   a ; said axle also bearing and being transfixed by a gear lock pin  93   FIG. 11   a , which said gear lock pin is located at a position between said high speed and said low speed gears  90 , 91 ; 
     said low speed gear  91   FIG. 11   a  being of a diameter and a gear tooth arrangement the same as a diameter and a gear tooth arrangement of said vertical travel chain drive gear  92   FIG. 11   a ; said low speed gear and said vertical travel chain drive gear being in a permanent state of fixation to each other; 
     a transmission axle  94   FIG. 11   a  bears a pair of transmission gears  95 , 96   FIG. 11   a , an external transmission gear  95  and an internal transmission gear  96 ; said transmission axle  94  is situated and held in said bracket  89   c  at a level slightly below and in an alignment with said control handle axle  89   b;    
     a closed loop external transmission gear chain  97   FIG. 11   a  serves as a permanent interconnection between said high speed gear  91   FIG. 11   a  and said external transmission gear  95   FIG. 11   a ; a closed loop internal transmission gear chain  98   FIG. 11   a  serves as a permanent interconnection between said low speed gear  91  and said internal transmission gear  96 ; 
     both of said transmission gears  95 , 96   FIG. 11   a  are in a permanent attachment to said transmission axle  94   FIG. 11   a  in such manner that a rotation of said transmission axle  94  results in a like direction rotation of both of said transmission gears said set of three control handle axle gears  90 , 91 , 92   FIG. 11   a  and said pair of transmission gears  95 , 96   FIG. 11   a  and said pair of transmission gear chains  97 , 98   FIG. 11   a,    
     when spoken of collectively hereinafter said set of control handle and transmission handle gears and chain interconnections being referred to as a gantry travel transmission  99   FIG. 11   a ; said gantry travel transmission allowing of a selection of a high or a low travel speed in either of a forward or a rearward direction of said gantry along said base of said sawmill apparatus 
     all three travel handle axle gears  90 , 91 , 92  are situated in a free rotational state on said handle axle  89   b ; said axle can be moved along a transverse axis within said bracket such that said gear lock pin  93   FIG. 11   a  can be left in a neutral position, a position where said gear lock pin is not in an engagement with either the low or the high speed control handle axle gears; in such an instance, a rotation of said handle  89   a  leads to no rotation of any of the gears of said transmission  99 ; 
     a centrally directed movement of said axle  89   b    FIG. 11   a  serves to bring said pin  93  into an engagement within a slot in a lateral side of said slow speed gear  91 , following said engagement of said pin in said slow speed gear, a rotation of said axle  89   b    FIG. 11   a  results in a same direction rotation of said slow speed gear  91  with a resultant like direction and 1:1 speed ratio revolution of a vertical continuous loop travel chain drive gear  101   FIG. 11   a ; in this situation, said lateral transmission gear  95  also rotates in a like direction, and drives said high speed gear  90  into a like rotation, said high speed gear rotating in a free wheeling state around said drive handle axle;
         with a lateral movement of said axle  89   b  to bring said pin  93   FIG. 11   a  into an engagement within a slot in a lateral side of said high speed gear  90 , a rotation of said axle  89   b  results in a same direction rotation of said high speed gear  90  with a resultant like direction and a 2.5:1 speed ratio revolution of said lateral transmission gear  95 ; in this situation, said rotation of said lateral transmission gear leads to a like directional rotation of said internal transmission gear  96  with a resultant like rotation of said internal transmission gear  98  chain leading to a like rotation of said slow speed travel handle gear  91  and its attached travel chain drive gear  92 ;       

     a lower end loop of a vertical continuous closed loop travel drive chain  101   FIG. 11   a  is in an engagement around said travel chain drive gear  92 ; after passing upwards through said gantry said vertical travel drive chain  101  is situated in an engagement around said left rear upper travel control axle sprocket  532   FIG. 11   a , said sprocket  532  being situated at a left most end of said upper, rear travel control axle  524   FIG. 5   b , said upper control axles are held in a connection by a continuous closed loop upper travel sprocket cross chain  102   FIG. 11   b , which said cross chain is in an affixation around a pair of gantry travel upper cross chain sprockets  529 , 530   FIG. 11   b , a right upper rear travel axle cross chain sprocket  529   FIG. 11   b  and a right upper front travel axle cross chain sprocket  530   FIG. 11   b;    
     said upper travel cross chain  102  serving to impart a rotational movement from said upper rear travel control axle  520  to said upper front travel control axle  524  such that both of said axles  520 , 524  move in a unison and a like directional rotational manner in either of a forward or a backward rotation, said rotational movement being in an accord with a rotational movement of a forward or a backward turning of said travel control handle  89   a    FIG. 11   a  of said control handle assembly  89 . 
     a set of synthetic cables ( 103 , 106 , 109 , 112   FIG. 12 ), hereinafter referred to as “a rope”, “a pair of ropes” or “ropes” partially comprise a mechanism for a transfer of a rotational movement of said handle  89   a    FIG. 11   a  into a forward or a backward movement of said gantry along said longitudinal guide rails  505   FIG. 5   b ; said set of ropes comprising a pair of front end gantry travel ropes ( 103 ,  106   FIG. 12 ) and a pair of rear end gantry travel ropes ( 109 , 112   FIG. 12 ); 
     a forward end of a front left gantry travel rope  103   FIG. 12  is in a fixed attachment to a cleat  104   FIG. 12  situated at a left side front facing surface of said base section of said gantry; said rope  103   FIG. 12  makes a lateral passage to a left front corner of said base, thence making a passage around said corner and thence back along a left side of said base of said gantry to a point beneath said front upper gantry travel axle  520 , following a passage through an eye bolt  105   FIG. 12  said rope  103  is led in an upward turn and a passage upwards to a fixed attachment on said front upper gantry travel axle  520   FIG. 12  at a point slightly central to said pillow block  521   FIG. 12 ; 
     a forward end of a front right gantry travel rope  106   FIG. 12  is in a fixed attachment to a cleat  107   FIG. 12  situated at a right side front facing surface of said base section of said gantry; said rope  106  makes a lateral passage to a right front corner of said base, thence making a passage around said corner and back along a right said of said base of said gantry to a point beneath said front upper gantry travel axle  520 , where, following a passage through an eye bolt  108   FIG. 12  said rope follows an upward path, ending in a fixed attachment on said front upper gantry travel axle  520  at a point slightly central to said pillow block  523 ; 
     a rearmost end of a rear left gantry travel rope  109   FIG. 12  is in a fixed attachment to a cleat  110   FIG. 12  situated at a left side rear facing surface of said base section of said gantry; said rope  109  makes a lateral passage to a left rear corner of said base, thence making a passage around said corner and thence forward to a point beneath said rear upper gantry travel axle  524   FIG. 12 ; where, following a passage through an eye bolt  111   FIG. 12  said rope follows an upward path, ending in a fixed attachment on said upper rear gantry travel axle  524  at a point slightly central to said pillow block  525   FIG. 12 ; 
     a rearmost end of a rear right gantry travel rope  112   FIG. 12  is in a fixed attachment to a cleat  113   FIG. 12  situated at a right side rear facing surface of said base section of said gantry; said rope  112  makes a lateral passage to a right rear corner of said base, thence making a passage around said corner following which it follows a path forward to a point beneath said rear upper gantry travel axle  524   FIG. 12 , where, following a passage through an eye bolt  114   FIG. 12  said rope follows an upward path, ending in a fixed attachment on said upper rear gantry travel axle  524  at a point slightly central to said pillow block  527   FIG. 12 ; 
     following a selection of a gear pairing for a delivering of either of a lower speed or a higher speed of travel from said gears  90 , 91 , 92 , 95 , 96   FIG. 11   a  of said gantry travel handle control assembly  89   FIG. 11   a , a turning of said gantry forward travel handle  89   a , leads to either a forward or a backward rotation of said continuous closed loop vertical travel drive chain  101   FIG. 11   a ; said vertical travel chain drive turns said upper left rear travel sprocket  532   FIG. 11   a  in a like direction rotation to said rear upper gantry travel axle  524   FIG. 11   b ; concomitant with which a like directional rotation of said continuous closed loop upper travel sprocket cross chain  102   FIG. 11   b  imparted to upper travel axle sprocket  530   FIG. 11   b  by a rotational movement of said upper travel axle sprocket  529 , leads to a like directional rotation of front upper gantry travel axle  520   FIG. 11   b;    
     a forward rotation of said gantry travel control handle  89   a    FIG. 11   a  leads to a forward movement of said gantry along said longitudinal guide rails of said base of said sawmill apparatus; a rearward rotation of said gantry travel control handle  89   a  leads to a rearward movement of said gantry along said longitudinal guide rails  505   FIG. 5   b  of said base  580   FIG. 5   b  of said sawmill apparatus; 
     with said gantry in a situation at a rear most end of said gantry longitudinal guide rails said front right gantry travel rope  106   FIG. 12  and front left gantry travel rope  103   106   FIG. 12  are both in a fully extended and unwrapped state from said front upper gantry travel axle  520 , and said rear right gantry travel rope  112   106   FIG. 12  and rear left gantry travel rope  111   106   FIG. 12  are both in a fully wound state upon rear upper gantry travel axle  524 ; 
     a forward gantry control handle rotation serving thus to create said forward movement of said gantry by an application of a pulling action on said pair of front gantry travel ropes  103 , 106   FIG. 12 , said pulling action serving to create a wrapping of said pair of front gantry travel ropes upon said front upper gantry travel axle  520 ; simultaneously said pair of rear gantry travel ropes are led into an unwrapping from said rear upper gantry travel axle  524 ; 
     a rearward gantry control handle rotation serving thus to create said rearward movement of said gantry by an application of a pulling action on said pair of rear gantry travel ropes  109 ,  112   106   FIG. 12 , said pulling action serving to create a wrapping of said pair of rear gantry travel ropes upon said rear upper gantry travel axle  524 ; simultaneously said pair of front gantry travel ropes are led into an unwrapping from said front upper gantry travel axle  520 ; 
     said gantry further partially comprises a transverse guide rail assembly  14   FIG. 7   a , which said transverse guide rail assembly provides a mounting platform upon which said chain saw attachment and positioning assembly can be situated in a stable but removable manner within said gantry; said transverse guide rail assembly will be described in detail later. 
     Vertical Level Control Assembly 
     said gantry further comprising a stationary chain vertical level control assembly  14   FIG. 7   a , said stationary chain assembly providing a control of a vertical level of said sawblade with said saw blade in either of said perpendicular or said horizontal planar attitudes of orientation by imparting an upward or a downward movement of, and a fixation of said transverse guide rail assembly at any vertical position along a full height of said gantry; 
     said stationary chain vertical level control assembly thus allowing of a positioning and a locking into position of said saw for making said cuts or series of cuts in said log or other wood based substrate at an exact horizontal depth or an exact vertical width within said log or other chainsaw cuttable substrate; 
     said vertical level control assembly comprising in part a set of four vertically oriented stationary climbing chains  69   a,b,c,d    FIG. 8   b  a forward and a rearward left side pair of chains  69   a,c  and a forward and a rearward right side pair of chains  69   b,d : each of said chains being in a fixed attachment at a top and a bottom end to said gantry; 
     NOTE: other than being positioned at different points in said gantry, all said chains are exactly alike, so a representative drawing  69   a ( b,c,d )  FIG. 8   b  is presented as representative of all four such climbing chains; said chains are all affixed at a top end and a bottom end in a non-moveable manner to said gantry framework and all will be referred to by the character  69  and an association reference to their location within the gantry; e.g. a left rear climbing chain  69   a , a left front climbing chain  69   b , a right rear climbing chain  69   c  or a right front climbing chain  69   d.    
     Said vertical level control assembly further comprising a control handle  47   FIG. 7   a / 7   b , said handle comprising a rod structure which begins as a rear facing horizontally oriented hand grip  47   a    FIG. 7   b  following which comes a second section of said handle  47   b    FIG. 7   b  comprising a section that is bent away at ninety degrees to said hand grip section, which is affixed at a rearward end of a threaded handle axle bolt  47   c    FIG. 7   b  which said handle axle bolt, after a passage through and being stabilized by a rearmost section of a left rear, end bracket  48   FIG. 7   b  arrangement of said transverse guide rail assembly; is affixed to a smaller power augmentation gear  49   FIG. 7   b  of a pair of power augmentation gears  49 , 50   FIG. 7   b , with a larger power augmentation gear  50   FIG. 7   b , being situated below and in vertical alignment with said smaller gear; said larger gear being affixed near a rear most end of a left side stationary climbing chain sprocket axle  51   FIG. 7   b ; a rearmost termination of said sprocket axle being situated within a left side vertical level control mechanism toggle lock assembly  52   FIG. 7   b  which said toggle lock assembly is affixed to a rearmost component of said left rear, end bracket  48  of said transverse guide rail assembly; 
     an activation of a toggle lock handle  52   a    FIG. 7   b  of said toggle lock assembly  52   FIG. 7   b  of said transverse guide rail assembly leads to a prevention of an upward or downward movement of said climbing chain sprockets and a fixation of said transverse guide rail assembly at any vertical position along a full height of said gantry, a deactivation of said lock assembly  52   FIG. 7   b  leading to an allowance of an upward or a downward movement of said transverse guide rail assembly along a full height of said gantry; 
     said pair of power augmentation gears being connected by a continuous loop power augmentation gear drive chain  53   FIG. 7   b ; said augmentation gears providing a mechanical advantage to a rotational force being applied following an initiation of a rotation of said control handle; and, said drive chain connecting said augmentation gears serving to provide a transfer of a movement created by said rotational force from said control handle to create a rotation of said left climbing chain sprocket axle  51   FIG. 7   b;    
     continuing forward from said augmentation gear  50 , said left side climbing chain sprocket axle  51  next enters an attachment to and passes through a left rear stationary chain climbing sprocket  54   a    FIG. 7   c,    
     NOTE: there are four such stationary chain climbing sprockets ( 54   a,b,c,d    FIG. 8   b ) involved as a part of said vertical level control assembly; other than being positioned at different points in said gantry, all such stationary chain climbing sprockets are exactly alike, so a representative drawing  54   a    FIG. 7   c  is presented as representative of all four such climbing chain sprockets; 
     said sprockets are all in an affixation to one of a pair of climbing chain axles  51  or  552   FIG. 7   b ; said left side climbing chain axle  51  and a right side climbing chain axle  552   FIG. 7   b  (only a rear termination of which is visible); all said stationary chain climbing sprockets will be referred to by the character  54  and an association reference to their location within the gantry; e.g. said left rear stationary chain climbing sprocket  54   a    FIG. 7   c  being in an affixation on on said climbing chain axle  51 ; a left front stationary chain climbing sprocket  54   b    FIG. 7   b  also being in an affixation on said climbing chain axle  51 ; a right rear stationary chain climbing sprocket  54   c    FIG. 7   b  being in an affixation on said climbing chain axle  552 ; a right front stationary chain climbing sprocket  54   d    FIG. 7   b  also being in an affixation on said climbing chain axle  552   7   b  (only the end of which is visible, the remainder being in a right lateral position behind said right upper cross brace  14   g    FIG. 7   b . After said passage through said left rear stationary chain climbing sprocket  54   a , said axle  51  next passes through a left rear guide bolt bracket  65   a    FIG. 7   b  following which it passes forward through a left front guide bolt bracket  65   b    FIG. 7   b  and then makes a passage into and said affixation to said left front stationary chain climbing sprocket  54   b    FIG. 7   a ; after said passage through said sprocket  54   b , said axle  51  passes into and is affixed within a left side cross chain sprocket  57 ,  FIG. 7   b , one of a pair of cross chain sprockets, said left side cross chain sprocket  57  and a right side cross chain sprocket  58   FIG. 7   b ; said axle then ending at a passage through a left front axle end bracket  55   a    FIG. 7   b.    
     Cross Chain Assemblage 
     Said left cross chain sprocket  57   FIG. 7   a  being connected to said right side cross chain sprocket  58   FIG. 7   a  by an engagement with a continuous loop cross chain  59   FIG. 7   a , said cross chain describing a solid loop around said cross chain sprockets; a top left lateral portion of said cross chain being engaged within an of idler arm tension assembly (best seen in detail as)  64   FIG. 8   c  (and also seen in relation to said vertical level control assembly  14 ) as  64   FIG. 8   a , said tension arm assembly comprising in part a pair of tension assembly idler wheels  60 , 61   FIG. 8   c , said tension arm idler wheels serving to provide an optimal adjustment of a tension of said cross chain; said idler arm tension assembly  64  comprising a slotted idler arm  62   FIG. 8   c  projecting rightward from an attachment at a left lateral forward end of said transverse guide rail assembly; a central most idler wheel  61  being held in a fixed position at a central most end of said idler arm by a bolt and nut  61   a    FIG. 8   c ; a lateral most idler wheel  60  being held in an adjustable affixation within a horizontal slot  63   FIG. 8   c  within said idler arm  62  by a nut and bolt  60   a    FIG. 8   c  such that said idler pulley can be moved in a leftward or rightward direction within said slot as needed to accomplish an increase or a decrease of tension on said cross chain, said movement being performed in order to create an appropriate tension adjustment of said cross chain; said cross chain making a passage beneath said lateral most idler wheel and over a top of said central most idler wheel. 
     Said right side cross chain sprocket  58  being affixed near a forward end of said right side stationary climbing chain sprocket axle  552   FIG. 7   b , only a rearmost end of which said axle is visible, said axle  552  comes to a front termination just forward of said right side cross chain sprocket  58   FIG. 7   b  after a passage through a front right sprocket axle end bracket  55   b    FIG. 7   b.    
     Continuing in a rearward direction from said cross chain sprocket  58 , said axle  552  makes a passage through said climbing chain right front  54   d , then passes through said right front guide bolt bracket  65   d  and said right rear guide bolt bracket  65   c , passing next though and into an attachment with said right rear climbing chain sprocket  54   c  and then into a rear termination within a right side vertical level control assembly toggle lock mechanism  68   FIG. 7   b ; a locking or unlocking of said toggle lock mechanism being afforded by a toggle lock handle  68   a    FIG. 7   ba ; said lock mechanism being affixed to said right rear end bracket  66   FIG. 7   b . of said transverse guide rail assembly; said lock mechanism  68  serving as one of a pair of locks  52  or  68   FIG. 7   b  capable of maintaining said vertical level control assembly at a desired level above said floor of said sawmill; 
     Following a release of said locks  52  or  68  of said vertical level control assembly, a rotation of said left side control handle  47   a    FIG. 7   b  serves to cause said attached left side rear end and left side forward end climbing sprockets to rotate and climb in an upward or a downward direction along said stationary vertical climbing chain, with a simultaneous directional and vertical length of travel being imparted to said right side climbing chain sprocket axle and its associated gears, sprockets and associated components by said rotation of said cross chain; 
     NOTE: as with the stationary climbing chains themselves, other than being positioned at different points in said gantry, all said immediately associated climbing chain sprockets, climbing chain tension pulleys and attachment bolts and nuts are exactly alike, so a representative drawing  FIG. 8   b  is presented as representative of all four such components, and all will be referred to by their character number and an associated lower case letter a,b,c,d with the association reference being to their location within the gantry; e.g. said left rear climbing chain sprocket  69   a , left front climbing chain sprocket  69   b , right rear climbing chain sprocket  69   c  or said right front climbing chain sprocket  69   d . The associated components, including: the half circle loops  70   a,b,c,d ; upper idler wheels  71   a,b,c,d ; lower idler wheels  72   a,b,c,d  components also representing their positions by the lower case letters indicating like positions in the gantry. 
     Each of which said stationary chains  69  ( a,b,c,d )  FIG. 8   b  are held in an engagement with an associated stationary chain climbing sprocket  54  ( a,b,c,d )  FIG. 8   b , by their being held in an associated one of a series of half circle loops  70  ( a,b,c,d )  FIG. 8   b  of said stationary chains by an associated one of a series of pairs of idler wheels and associated mounting bolts  71   a,b,c,d  and  72   a,b,c,d , 72   FIG. 8   b ; an upper idler wheel and associated mounting bolt  71 ( a,b,c,d )  FIG. 8   b  and a lower idler wheel and associated mounting bolt  72 ( a,b,c,d )  FIG. 8   b ; said idler wheels being bolted within said guide bolt brackets such that said idler wheels are in an exact vertical alignment respectively above and below said associated climbing chain sprocket; said idler wheels being adjusted in tension so as to provide an appropriate tension for a maintenance of an engagement between said climbing sprockets and said stationary chains. 
     Transverse Guide Rail Assembly 
     Said transverse guide rail assembly  14   FIG. 7   a , which provides said mounting platform upon which said chain saw attachment and positioning assembly can be situated in a stable but removable manner within said gantry; comprises in part a pair of transverse guide rails  140 ,  141   FIG. 7   b , a rear transverse guide rail  140  and a front transverse guide rail  141 ; said transverse guide rail assembly also partially comprising a set of guide rail support cross members ( 14   g,h,i,j    FIG. 7   b ); 
     a lower pair of which said longitudinal guide rail support cross members  14   h , 14   j    FIG. 7   b , a lower left side guide rail cross member  14   j  and a lower right side guide rail cross member  14   h , are in a positional situation respectively beneath and at a left end and a right end of said transverse guide rails  140 , 141  to which said guide rails said lower guide rail support cross members are in a removable affixation by a set of U-bolt connectors  18   a , 18   b , 18   c    18   d    FIG. 7   d ; a left rear guide rail U-bolt connector  18   a    FIG. 7   d , a left front guide rail U-bolt connector  18   b    FIG. 7   d , a right rear guide rail U-bolt connector  18   c    FIG. 7   d  and a right front guide rail U-bolt connector  18   d .  FIG. 7   d . Upper right side guide rail cross member  14   g  is in a front end attachment to an inner aspect of bracket  65   d    FIG. 7   b  and in a rear end attachment to an inner aspect of bracket  65   c    FIG. 7   b . Although not visible in the illustration, an exact same attachment via a set of connector brackets  65   a/b/c/d    FIG. 7   b  exists for a front end of upper cross member  14   i  to bracket  65   b  and for a rear end of cross member  14   i  to bracket  65   a . Upper cross members  14   g  and  14   i  serving as further cross bracing for connector brackets  65   a,b,c,d.    
     Lower guide rail cross members  14   h , 14   j  are held in a removable attachment to brackets  65   a,b,c,d  by a set of four pairs of O.C. tube attachment bolts  9   FIG. 7   d —only two pairs of which, a right front and a right rear pair, are visible—, a head of each of the bolts  9   FIG. 7   d  is in a location in an appropriate O.C. tube; a threaded end of each bolt  9   FIG. 7   d  is in a projection through an appropriate brackets  65   a,b,c,d    FIG. 7   b  such that with a tightening of a nut situated on the threaded end of each of said bolts, a solid affixation of cross members  14   h  or  14   j  against said appropriate bracket  65   a,b,c,d    FIG. 7   b  is afforded; thus serving to provide a stabilization of the transverse guide rails  140 , 141  within the transverse guiderail apparatus of the gantry and in an appropriate association with the vertical level control mechanism components of the sawmill apparatus. Note: since all of a series of attachments of both cross members  14   h  and  14   j  to said guide bolt brackets  65   a,b,c,d  are identical, the one example given is presented as a representation of each of said connections. 
     Said upper guide rail support cross members  14   g  and  14   i    FIG. 7   b  are in a permanent affixation on a central facing aspect of said set of guide bolt brackets  65   a,b,c,d    FIG. 7   b;    
     each of said set of brackets  65   a,b,c,d    FIG. 7   b  further comprising a vertical plate portion in a situation along side an O.C. tube opening of said O.C. tubes  14   a,b,c,d    FIG. 7   b ; said O.C. tubes  14   a,b,c,d  each being held in a moveable affixation with an associated guide bolt bracket  65   a,b,c,d  by a set of four pairs of transverse guide rail vertical travel-guide nut and bolt sets, which said pairs are typified by a left rear top transverse guide rail vertical travel-guide nut and bolt set  14   k    FIG. 7   c , and a left rear bottom transverse guide rail vertical travel-guide nut and bolt set is not visible  14   m    FIG. 7   c ; said other three sets of such pairs of transverse guide rail vertical travel-guide nut and bolt sets are not visible, however they are located within an analogous bracket and O.C. tube arrangement with said gantry main frame O.C. tubes  14 , a,b,c,d , which said O.C tubes as described prior are in said affixation with an associated set of said gantry vertical frame members  510   a,b,c,d .  FIG. 5   c.    
     These other three sets of vertical travel guide nuts and bolts and a nature of their engagement within the relationship of the climbing chain assembly, the transverse guide rail assembly and the gantry are not described in detail because they are physically and functionally mirror images of the arrangement just described for bolt and nut sets  14   k , 14   m , hence the description of said bolt and nut sets  14   k  and  14   m  are presented as a representative example of all such pairings. 
     Said transverse guide rails, guide rail support cross members and associated support brackets forming thus a rectilinear cross framework at said right and said left ends of said transverse carriage guide rails; said rectilinear cross framework serving as a support framework within which said stationary chain vertical level control climbing sprocket axles of said carriage vertical level control assembly are situated. 
     A head of each of bolts of said nut and bolt sets  14   k ,  14   m    FIG. 7   c , which are in an association within a slot in said O.C. tube  14   c , act in a concerted manner with their analogs (not visible) that are in a like relational association with O.C. tubes  14   b , 14   c , 14   d    FIG. 7   b , thus serving to act as a set of guides of a vertical movement of said transverse guide rail assembly in said upward or downward direction within said gantry under the motive power provided by said stationary chain vertical level control assembly  14   FIG. 7   a.    
     Conversion for Adaptation for Use on Other Sawmill Frameworks 
     It is an object of this invention to provide a combined, modified chainsaw transverse guide rail and chainsaw carriage assembly that allows a use of this modified combination device within an existing sawmill apparatus other than that of the present invention, said existing sawmill having a pair of longitudinal carriage support rails. A conversion and modification adapter kit is necessary for a provision allowing of said use; said adaptor kit in essence comprising a wheel adaptor conversion kit. 
     A first step involved in allowing said use in other sawmills involves: a disconnection of a removable section of said transverse guide rail assembly  650   FIG. 7   d ; said removal being allowed by a loosening of the heads of the four paired sets of OC tube attachment bolts  9   FIG. 7   d , which said loosening allows an intact removal of said removable guide rail section  650   FIG. 7   d  from the gantry. 
     A conversion modification adaptation is then needed in order to create a pair of wheel assemblies  180   FIGS. 7   e  and  181   FIG. 7   e , which said wheel assemblies will afford an ability for a mounting of the sawmill carriage device of this invention on the longitudinal guide rail saw supports of many sawmill apparatuses. 
     A right side wheel adaptor conversion plate  18   g  is seen in  FIG. 7   f . A left side wheel adaptor conversion plate  18   f    FIG. 7   e  is not shown in detail, however it is a mirror image of conversion plate  18   g    FIG. 7   f , so only the latter will be described in detail; the attachment parts associated with each of these said connector plates being exactly the same. 
     In  FIG. 7   f , it is seen that there is a front end set of attachment components  18   h,i,j,k,l,m,n,o,p    FIG. 7   b ; a mirror image set comprising a rear end set of attachment components is shown as  18   q - y    FIG. 7   f . Since the components of both sets are exactly the same it is not deemed necessary to describe the rear end set separately; a mirror image situation exists at the left side wheel adaptor conversion plate, so that array will not be described in detail and a description of the right side front end conversion plate attachment group will serve as a description for all such. 
     A wheel axle bolt  18   h    FIG. 7   f  passes through an axle wheel bolt hole  18   i  in conversion plate  18   g , following which the bolt passes through a washer  18   j  then a spacer hub  18   k  and next through a grooved wheel  181  and finally into a nut  18   m , which nut  18   m , when tightened onto bolt  18   h  serves to hold wheel  181  affixed to the conversion bar  18   g . A pair of O.C. tube connector bolts  18   n  pass though a pair of O.C. tube connector bolt holes  18   o  in conversion plate  18   g  and then into a pair of O.C tube connector bolt nuts  18   p.    
     Once all four groups of attachment components shown as  18   h - 18   p    FIG. 7   f  are situated in their appropriate positions on said adaptor conversion plates  18   f  and  18   g , a tightening of the heads of the O.C. tube connector bolts  18   n  provides an affixation of the wheel assemblies  180 ,  181   FIG. 7   e  into the associated O.C. tubes. The U-bolt connections  18   a,b,c,d  of O.C. tubes  14   h  and  14   j    FIG. 7   d  serve to connect the wheel assemblies which are in an association with the wheel adaptor conversion plates  18   f ,  18   g    FIG. 7   e  to the transverse guide rails  140 ,  141   FIG. 7   e , thus completing the conversion necessary for a use of the saw carriage of this invention within many other sawmill apparatuses. 
     Chainsaw Carriage Assembly 
     Said chain saw carriage assembly  100   a    FIG. 1   a  comprising in part, a chainsaw attachment component  3   FIG. 1   a , and a saw blade orientation component ( 1  plus  2   FIG. 1   a ) which said saw blade orientation component comprises in part a body assembly section  1   FIG. 1   a  and a lockable, hinged saw blade orientation assembly  2   FIG. 1   a  component, which said hinged orientation assembly acts as a saw blade orientation means allowing of a change between and a stable maintenance of either of a perpendicular or a horizontal planar attitude of a blade of said chain saw with said saw blade oriented in a longitudinal cutting alignment; 
     Body Section of Saw Blade Orientation Component 
     A body assembly section  1   FIG. 1   a  comprises in part an elongated, parallelepiped shaped body member  5 , 7 , 8   FIG. 2  plus  6   FIG. 3 . Said body member further comprising in part a top plate  5   FIG. 2 , a bottom plate  6   FIG. 3 , a left side plate  7   FIG. 1   b , a right side plate  8   FIG. 2   
     A set of circular transverse guide rail openings  13   a , 13   c , 13   b  are seen in  FIG. 2 ; a pair of guide rail openings  13   a  and  13   c  are in a location on said right side plate  8  and a rear left guide rail openings  13   b  is seen in a location on said left side plate  7 ; a left side front guide rail opening is not visible, however said opening is in a like position of said left side plate  7  as is said opening  13   c  on said side plate  8 . 
     Each of these guide rail openings is in an internally facing attachment with an associated guide rail bushing plate  16   a , 16   b , 16   c , 16   d    FIG. 2 , with each of said bushing plates being in an affixation to an inner aspect of an associated side plate by an associated pair of bushing plate nuts and bolts  16   e , 16   f , 16   g , 16   h . NOTE: for purposes of clarity, the bushings  16   a/b/c/d  and the associated nuts and bolts  16   e/f/g/h  are shown external to the body member  5 , 7 , 8   FIG. 2  plus  6   FIG. 3 , while in actuality, the bushing plates are mounted internally within said body section. 
     Said bushing plates providing a gliding surface for said Transverse guide rails  140 ,  141   FIG. 7   a  of said transverse guide rail assembly as said guide rails pass through the guide rail holes  13   a,b,c,d  of said body section  1   a  of said chainsaw carriage assembly  100   a    FIG. 1 ; thus creating a laterally moveable affixation of said carriage within said gantry and allowing of a range of movement of said carriage assembly across a full left to right width of said gantry of said sawmill apparatus and allowing an improved ability to accurately create a series of dimensional pieces of lumber with said parent log being left in said original, unturned position. 
     Said body section further comprising in part a right side hinge plate spacer ridge  11   FIG. 2  and a left side hinge plate spacer ridge  12   FIG. 2 , 
     said body section further comprising a chain saw attachment assembly receiver cutout  15   FIG. 3  located beneath said right side spacer ridge near a bottom edge of said right side plate  8 , said receiver cutout  15  being pierced at a front and a rear face by a pair of hinge attachment axle bolt receiver holes  15   a,b    FIG. 3 , only the front face hole  15   b  of said pair of holes is visible.; said axle bolt receiver holes being designed for a passage of a hinge attachment axle bolt  15   d    FIG. 4   a;    
     said body section further comprising a pair of opposed depth gauge openings  17   a ,  17   b    FIG. 3  said openings being situated near said front end of said top and said bottom plates of said saw attachment and positioning assembly allowing for a placement of a removable horizontal cut thickness gauge  73   FIG. 9   a , said gauge capable of being set in a manner providing a preferred thickness of cut in a series of repeated cutting passes through said log or other chainsaw cuttable substrate; this gauge will be described in greater detail later. 
     Hinged Saw Blade Orientation Assembly of Saw Blade Orientation Component 
     A hinged saw blade orientation assembly  2   FIG. 2  comprising in part an L shaped hinge frame  20   FIG. 2  which said hinge frame comprises in part a pair of side elements  21 , 22   FIG. 3 , a longer side element  21   FIG. 3  and a shorter side element  22   FIG. 3 , said side elements being arranged in a permanent junction at a 90 degree angle one to the other; 
     a swivel lock bolt slot  31   a    FIG. 3  is located at a top edge of said longer side element  21  and a swivel lock bolt slot  31   b    FIG. 3  is located at a top edge of said shorter side element  22 ; said longer side element being pierced as well by a series of four hinge plate attachment holes  24   FIG. 3  for receiving a set of four hinge plate attachment bolts  25   FIG. 4   a  and nuts  38   FIG. 4   a  for attaching said chainsaw attachment component  3   FIG. 4   a  to said hinge plate assembly; 
     said hinged attachment plate  20   FIG. 3  also partially comprising an internally facing hinge axle block  26   FIG. 3 , said block being pierced by a hinge axle block bolt hole  23   FIG. 3  designed to receive said hinge attachment axle bolt  15   d    FIG. 4   a ; said axle bolt allowing of a rotatable, moveable affixation of said longer side element  21   FIG. 3  to a side of said body of said carriage when said hinge axle block is situated within said body&#39;s said attachment assembly receiver cutout  15   FIG. 3  and said axle bolt is inserted; 
     said hinge plate assembly also comprising a hinge-swivel lock component  74   FIG. 2 , said swivel lock component being in a situation in a rotatable affixation to said top plate of said body section of said chainsaw attachment and positioning assembly by a swivel lock axle bolt and nut set  34 , 34   a    FIG. 2 , said swivel lock component further comprising a swivel lock body base  29   FIG. 2 , a slotted swivel lock bolt plate  30   FIG. 2 , a swivel lock plate bolt  31   FIG. 2  and a swivel lock locking handle  32   FIG. 2 , said handle containing a captured cylindrical nut  33   FIG. 2  to receive said swivel lockplate bolt  31 ; said chain saw blade being held in a stably maintainable attitude within either a horizontal or a vertical plane of orientation of said saw blade by an engagement and locking of said swivel lock bolt within, respectively, said lock bolt slot of said longer or of said shorter L shaped section of said hinge frame; 
     the whole being arranged such that a release of said swivel lock locking handle allows a removal of said swivel lock bolt from an engagement within said swivel lock bolt slot located in a side element of said L shaped frame of said hinge plate assembly, allowing thus a selectable alternation of a planar attitude of said saw blade of said chain saw between a perpendicular or a horizontal alignment of said blade of said chain saw., and a creation of successive pieces of dimensional lumber while leaving a parent log in an unturned, original position within said sawmill. 
     Hinge Alignment Fine Tuning Assembly 
     a hinge alignment fine tuning assembly of said saw blade orientation component comprises in part a set of two pairs of hinge alignment fine tuning set screws  31   c ,  31   d    FIG. 3 ; a pair of set screws  31   c  in said shorter side element  22  of said L shaped hinge frame, and a pair of set screws  31   d  in said longer side element  21  of said L shaped hinge frame 
     said set screws being situated in either one of a pair of two pairs of threaded set screw holes  27   a  and  27   b    FIG. 4   a , said set screw holes being situated in a position within and beneath a top edge of said longer side element and said shorter side element respectively; prior to a tightening of a hinge frame toggle bolt into place within said slots in either side plate of said hinge frame of said body section; either of said pairs of said set screws, depending upon an existing vertical or a horizontal orientation of said saw blade, being capable of an adjustment such that an internal end of an involved pair of said set screws is brought to a rest against an outer aspect of a side plate of said body section of said chainsaw attachment and positioning assembly; an inward or an outward movement adjustment of one pair of said set screws against said side wall leading to an alteration of a vertical or a horizontal alignment of said hinge plate, which said hinge plate adjustment creates an alteration of a vertical or a horizontal alignment of said saw blade through an alteration of a vertical or a horizontal alignment of a bar clamp connector arm  35 ,  FIG. 4   a  of said chainsaw attachment component  3   FIG. 2 ; following said fine tuning adjustment, said hinge lock bolt is locked into place; said fine tuning assembly thus allowing of an adjustment of said chainsaw blade  404   FIG. 6   a  towards a truer perpendicular or horizontal planar orientation; allowing thus of an accurate creation of successive pieces of orthogonal dimensional lumber. 
     Chainsaw Attachment Component 
     A chainsaw attachment component  2   FIG. 2  of said carriage assembly  100   a    FIG. 1   a  comprising in part a bar clamp connector arm  35   FIG. 4   a , which said bar clamp connector arm  35  terminates at a lower end by an attachment to a bar clamp component  36   FIG. 4   a;    
     said bar clamp assembly component  36  of said chain saw attachment component being held at an adjustable distance beneath said longer side plate of said hinge frame assembly by a welded affixation at a lower, terminal end  39   FIG. 4   a  of said bar clamp connector arm  35 ; an upper end of said bar clamp connector arm being in a moveable affixation above to said longer side element of said L shaped hinge frame by an affixation within a pair of bar clamp connector arm brackets  37   FIG. 4   a , said brackets affixing said connector arm  35  to said longer side plate of said hinged saw blade orientation assembly by a set of four bar clamp connector arm attachment bolts/nuts  25   FIG. 4   a / 38   FIG. 4   a;    
     said bar clamping assembly further comprising in part a pair of inverted U shaped bar clamp body sections ( 40   a , 40   b    FIG. 4   a ), an upper bar clamp body section  40   a    FIG. 4   a  and a lower bar clamp body section  40   b    FIG. 4   a , which said body sections are joined by a pair of bar clamp body bolt, spacer and nut sets  41   FIG. 4   a  which said nut and bolt sets are situated near a front and a rear extremity of said bar clamp body sections; said conjoined body sections otherwise having an open space between their adjacent sides, said space being for a purpose of allowing a passage of said bar of said chain saw between said bar clamp body sections; an upper section of which said body section  40   a    FIG. 4   a  is welded above to said bottom end  39   FIG. 4   a  of said riser bar clamp connector arm  35 ; a bottom end of said bar clamp body sections  40   a,b , being in a welded affixation below to a pair of foot plate components  40   c ,  40   d    FIG. 4   a ; said foot plate components being welded to said body sections in such manner that a space exists for an insertion of said chainsaw bar between said foot plates; 
     a pair of chainsaw bar clamping plates  42   a,b ; an upper bar clamping plate  42   a    FIG. 4   a  and a lower bar clamping plate  42   b    FIG. 4   FIG. 4   a  are in a situation and affixation in an opposed manner between said upper and lower bar clamp body sections such that a tightening of a pair of clamping plate adjustment bolts  75   FIG. 4   b  selectively affords a holding of said chain saw bar firmly within said bar clamp assembly, and conversely a release of said bolts releases said bar and allows a withdrawal of said chain saw from said chain saw attachment assembly; 
     said bases of said foot plates comprise a skid assembly; which said skid assembly would be situated in a manner with a bottom aspect of said foot plates resting against a side surface of the log to be cut when said chainsaw blade is in an orientation for making a through cut in said horizontal cutting plane; 
     Secondary Bar Nose End Clamping Assembly 
     NOTE: optionally, a secondary bar nose end clamping assembly of a same design as said bar nose end vertical cut stabilization component ( 36   FIG. 4   a , best seen in  FIG. 4   b ) can be used for a stabilization of said saw bar nose end of said saw blade bar when cutting at a partial depth into a log using only a bar nose end section of said blade; or, alternatively can serve a use when making horizontally aligned through cuts in a log of an extreme girth wherein a bar nose end stabilization of an extra long saw blade must be used. 
     Said secondary bar clamping assembly is not described in detail because said assembly comprises exactly a same set of components and arrangement of parts as did the chainsaw bar clamping assembly  36   FIG. 4   a  described immediately prior. The description of the chainsaw bar clamping assembly  36   FIG. 4   a  being held to serve as a description of a secondary bar clamping assembly. 
     The further out towards said nose end of said saw blade said blade is in cutting contact with said log, the greater a tendency of said blade to vibrate and wander from a straight cutting path; this can significantly decrease the accuracy of cutting, and lead to defects such as “scoring” caused by sawbar vibration; processing a rough board to a finished commercial size can result in up to thirty percent waste. Any reduction in defects or increase in accuracy is proportionately rewarded with economic and ecological benefits. 
     Accordingly, said bar nose end clamping assembly by a provision of a stabilizing support of a blade tip when cutting at a depth using only a bar nose end section of the blade; provides both a reduction of sawing waste and a prevention of a downward movement of said saw blade nose end otherwise associated with a downward pull of said saw blade that otherwise might draw the blade deeper than intended; the bar nose end clamping assembly thus preventing a fluctuation of depth of cut along a length of a piece of dimensional lumber created in said sawmill apparatus. 
     Said adjustable bar nose end clamping assembly can be placed in a firm affixation to said saw bar at an appropriate location along a length of said saw bar, then, as needed, released by a loosening of said clamping plate adjustment bolts  75   FIG. 4   b  and removed or alternatively repositioned at a next appropriate level along said saw bar. 
     Lateral Position Locking Assembly of Body Section 
     A locking of an integral lateral positioning locking assembly mechanism  4   FIG. 2  of said body component  1   FIG. 2  allows of a fixation of said carriage in a stably situated, fixed, but alterable manner at any point along said transverse guide rails  140 , 141   FIG. 7   b ; an unlocking of said integral lateral positioning locking mechanism making possible a movement of said chainsaw carriage assembly in either a left or a right direction along a full length of said rails of said transverse guide rail assembly of said sawmill, thus allowing a making of multiple vertically oriented cuts at a desired separation across a full width of said log, cant or other substrate as part of a process of allowing of an accurate creation of successive pieces of dimensional lumber; 
     said lateral positioning locking assembly  4   FIG. 2  comprises in part a lateral lock assembly base plate  43   FIG. 2 , a base of which is pierced by a pair of screw holes and partially surmounted by a pair of rear end partial side walls, each of which side walls bear an axle pin slot near a top level; said lock assembly base plate being affixable within a rear floor section of said body assembly  1   FIG. 2  by a pair of lock assembly base plate attachment screws  43   a    FIG. 2 ; 
     said locking assembly further comprising a lock handle arm terminating inferiorly in a cam shaped end  43   b    FIG. 2 , said cam shaped end of said handle being pierced through from left to right by an axle pin hole  43   c    FIG. 2 , said axle pin hole designed for a receiving of a lateral positioning lock assembly axle pin  43   d    FIG. 2 ; 
     with said body section mounted on said transverse guide rail assembly with guide rails  140 , 141   FIG. 7   b  situated within said body section guide rail holes  13   a,b,c,d    FIG. 2 , said base plate is placed into an affixation within said body section by said screws  43   a , following which a lateral locking assembly lock block  43   e    FIG. 2 , which said lock block bears a front end concavity conformed to the same arc of curvature as an external wall of said transverse guide assembly guide rails  140 , 141   FIG. 7   a , is situated in a position atop a forward end of said top surface of said base plate  43 , following which said handle  43   b  is affixed in a rearmost position atop said base plate by said axle pin  43   d.    
     Following these preparations, a forward engagement of said lock arm  43   b  will provide a rotation of said cam end into a compression against said lock block  43   e , said front end concavity of said lock block thus being brought into a compression against said rear guide rail  140   FIG. 7   a , and thus serving to effect a locking in place of said carriage assembly on said transverse guide rail assembly within said gantry. 
     A retraction, via a back tilting of said handle  43   b  down and back to a horizontal position allowing of a disengagement of said lock block from said transverse guide rail creating a release of said lock mechanism and allowing of a free movement of said carriage section in either a right or a left direction along a full width of said transverse guide rails of said gantry of said sawmill apparatus, 
     said lateral positioning locking assembly thus allowing of a precise controlling of a left side to a right side positioning of said saw blade relative to a left to right width of said gantry while said chainsaw is in said tip down, perpendicular orientation, as well as allowing of a precise controlling of said left side to right side positioning of said saw bar nose end at a selected distance from said right side within said left to right width of said gantry when said chain saw is in said horizontal plane of blade orientation. 
     Horizontal Cut Thickness Gauge 
     Said saw carriage further comprising said removable, horizontal cut thickness gauge assembly  73   FIG. 9   a , which said gauge assembly allows of a making of a series of multiple horizontal cuts at an automatically predetermined thickness of cut throughout a full or a partial vertical height of said log or said cant, resulting in an elimination of time spent in re-measurements and a reduction of measurement error in a successive cutting of pieces of dimensional lumber; said horizontal cut thickness gauge assembly, best seen in  FIG. 9 , comprises in part, an L shaped member  76 , 77 , 78   FIG. 9 , said L shape member comprising a pair of rectangular O.C. tube elements, a longer, vertical element  76   FIG. 9  having an O.C. tube opening facing a front aspect of said L shape element and a shorter horizontal element  77   FIG. 9  having an O.C. tube opening facing upwards; said horizontal element  77  comprising a foot section of said gauge assembly; said elements being joined by a combination of a thickness gauge frame set of nuts, bolts and a corner brace  78   FIG. 9  so as to form said L shape; 
     said horizontal cut thickness gauge assembly also comprising a pair of toggle clamp locking assemblies  79 , 80   FIG. 9 , an upper toggle clamp lock assembly  79  and a lower toggle clamp lock assembly  80 ; 
     said lower lock assembly  80  comprises a lower lock handle  80   a , and a lower lock handle lock bolt and nut set  81   FIG. 9 , only a threaded end of said bolt and the nut of said nut and bolt set are visible, a head of said bolt being invisible within a section of said vertical a element O.C. tube section  76   FIG. 9   a  within said body section  1 ; 
     said upper lock assembly  79  comprises an upper lock assembly lock handle  79   a    FIG. 9   b , an upper lock assembly lock bolt  82   FIG. 9   b  and a corner brace  83   FIG. 9   b ; said corner brace, and a threaded end of said bolt and the nut of said nut and bolt set are visible, a head of said bolt being invisible within said vertical element  76   FIG. 9 . 
     in an operation of assembly of said horizontal cut thickness gauge within said body section  1   FIG. 9   a:    
     with said vertical level control of said gantry elevated to an adequate level above said log in said sawmill apparatus, following a removal of said upper toggle lock element from said L shape element, a passage of a top end of said vertical element is allowed in a passage from below to above through said lower thickness gauge opening  17   b  in said bottom plate  6   FIG. 3 ; said lower toggle lock bolt having been left in a permanent situation on said right side plate of said body said upwards passage of said vertical gauge element now will also allow of a passage of said head of said lower lock toggle bolt into the O.C. tube slot of said vertical section  76   FIG. 9   a;    
     said vertical element continuing upward makes a passage through said upper thickness gauge opening  17   a  in said top plate  5   FIG. 1   a  of said carriage body section  1   FIG. 1   a ; following which said gauge will be in a position with said foot section projecting laterally over said log; 
     then, following a locking of said lower gauge lock  80   FIG. 9   a , which creates a compression of said bolt head laterally towards an inner side aspect of said sidewall of said body section, leading to a stable fixation of said gauge at a selectable height within said body section by a fixation of said vertical element against of said right sidewall  8  of said saw positioning assembly, thereby holding said horizontal cut gauge assembly with said foot of said gauge assembly fixed at a selected horizontal level between the then position of said base  6   FIG. 3  of said saw positioning assembly and a top of said log or other chain saw cuttable substrate; 
     initially, said affixation is performed with a holding of said gauge in a fixed position relative to said right side plate  8   FIG. 9  such that said foot section is held at an elevation slightly above and projecting laterally over a top level of a log in said mill apparatus; 
     said upper toggle clamp assembly  79  is kept in a fully assembled state with said bolt and nut passing though and holding said corner brace and lock handle together whether said lock mechanism is in a location within or a location removed from said gauge; 
     in said process of assembly of said gauge for a use in said mill, said bolt  82  is guided to a passage downward through said O.C. tube slot of said vertical gauge element and then said upper lock element is brought into a locked state with said gauge being held in a position considerably above said body of said carriage component; 
     In an operation of use of a fully assembled depth gauge in position in said body section: 
     with said gauge assembly inserted in place, and said lower toggle locking said gauge assembly at an appropriate distance above said log, and said upper toggle assembly being situated well upwards along said vertical element of said gauge assembly; and, following a making of a cant or at least one horizontal top cut in a log; 
     said transverse guide rail assembly of said gantry is lowered to and locked at a position such that said saw blade is situated in a horizontal cutting position and at a desired depth of cut relative to a top surface of said log or other chainsaw cuttable substrate; 
     said lower toggle is released and said gauge assembly is brought to a resting position against said top surface of said cant or said log and locked in place, following which said upper toggle assembly is released and brought into an appropriate adjustment on said vertical member with a horizontal component of said corner brace of said upper lock assembly in a position resting atop said top plate of said saw positioning assembly body; said upper toggle lock assembly then being brought into a locked state at that level; 
     said lower toggle is next brought to a release state, elevated off said log and relocked, with said upper toggle now elevated above said body section, thus keeping said depth assembly up out of the way while a first cut is made; 
     following a return of said saw to a starting position behind and at a base end of said log, said lower toggle is again brought to a released state and said gauge assembly is lowered until said horizontal component of said corner brace of said upper lock is resting atop said body of said saw positioning assembly body, following which said lower toggle is relocked 
     said transverse guide rail assembly is then lowered to a position such that said foot of said depth gauge assembly is resting lightly on top of said log, at which point said transverse guide rail assembly is locked at that vertical height; 
     said lower toggle of said depth cut gauge assembly is again brought to a released state and said assembly is then raised out of the way followed by are locking of said lower toggle, thus leading to a holding of said depth gauge assembly up out of a contact with said log; 
     following which a second cut is made, this process is repeated until all cuts have been made. 
     Double Acting Remote Chainsaws Trigger and Safety Switch Control Assemblies 
     A combination chainsaw safety switch and throttle trigger control assembly  84   FIG. 10   b  plus  85   FIG. 10   a , comprises a remote control handle portion  84   FIG. 10   b  and a saw handle borne portion  85   FIG. 10   a  of said saw handle  406   FIG. 10   a  of said chain saw; said remote control handle portion being borne on the left gantry subframe  541  (best seen in  FIG. 5   d ). 
     said remote control handle portion  84   FIG. 10   b  of said combination chainsaw safety switch and throttle trigger control assembly comprises a trigger control handle bracket  601   FIG. 10   c , said bracket  601  is in a central affixation to travel control handle bracket  89   c  (best seen in  FIG. 5   d )—said bracket  601  serves to contain a control handle  87   FIG. 10   b,    
     a flexible combination safety switch control cable and throttle trigger control cable  90   FIG. 10   a,b  is affixed at a forward facing end of said control handle  87   FIG. 10   b ; an opposite end of said cable  90  is in a first affixation to a pivotable safety switch engagement and connector element  602   FIG. 10   a  and then to a pivotable throttle trigger engangement and connector element  603   FIG. 10   a ; said pivotable engagement and connector elements  602 , 603  are situated within a trigger control frame section  604   FIG. 10   a  by a set of trigger control frame bolts  605  by which said bolts said frame section  604  is also clamped athwart an upper section of said saw handle  406   FIG. 10   a;    
     an activation movement of said handle  87  leads to a retraction of said control cable  90  following which a projection of said pivotable safety switch engagement and connector element  602  compresses an integral safety switch  606   FIG. 10   a  leading to a release of said safety switch; subsequently, a further movement of said control handle  87  leads to an activating pressure being applied to a throttle control trigger  607   FIG. 10   a  of said chain saw by a projection of said pivotable throttle trigger engagement and connector element  603 ; said activation of said throttle control trigger leading to a change of a motor speed of said chain saw from an idling speed to an initial cutting speed; 
     a further activation movement of said control handle  87  leads to an advancement of said throttle trigger from an idling speed to an active cutting speed position; a still further activation of said handle  87  allows of a further increase of said motor speed; a reduction of said activation of said control handle leading to a reduction of said motor speed of said chain saw; allowing thus of a complete control of a full range control of a cutting speed of said saw motor and said saw blade, ranging from an idling speed to a full speed of said motor and sawblade; 
     a release of said control handles leads in turn to a return of said throttle to a power level of an idling state and a return to an activation of said safety control switch. 
     Base Section of Sawmill Apparatus 
     Said set of longitudinal base section gantry tracks  505   a,b,c,d,e,f    FIG. 5   e    FIG. 5   b  of said base section  580   FIG. 5   e  of said sawmill apparatus  500   FIG. 5   a  comprise a track along which said gantry can be made to move in a forward or a rearward direction along a longitudinal length of a log in said mill, and further comprise the side rails/track portions of gantry subsections  581   a , 581   b , 581   c    FIG. 5   e.    
     Gantry track subsections  581   a  and  581   c  comprise a pair of identically formed end frame sections, said end frame subsections representing respectively, a pre and log retention area gantry base section  581   a  and a post log retention area gantry base section  581   c . A centrally situated modular subsection  581   b    FIG. 5   e  comprising a log retention portion of the sawmill apparatus. 
     End frame subsections  581   a  and  581   c  are of an identical size and configuration so a detailed description of subsection  581   a  will be presented as a representation of both. 
     Base section end section subframe  581   a    FIG. 5   e  comprises in part a pair of side piece rails  505   a/b    FIG. 5   e , a right longitudinal track section  505   a    FIG. 5   e  and a left longitudinal track section  505   b    FIG. 5   e ; each of said track sections  505   a , 505   b  comprises an angle iron section situated with a 90.degree angle of said angle iron located at a topmost vertical orientation, both ends of said angle iron track sections resting atop a pair of channel iron cross support end pieces  584   a , 584   b    FIG. 5   e , a rear end cross support end piece  584   a    FIG. 5   e  and a front end cross support end piece  584   b    FIG. 5   e ; a track connector section  610   FIG. 5   g  of each of said rail sections  505   a , 505   b  is seen as a short projection beyond the cross support end pieces  584   a , 584   b  in  FIG. 5   g.e;    
     a steel alignment tab  600   FIG. 5   g  is welded atop each end of each of said cross support end pieces and serves as an alignment guide insuring an exact situation of said longitudinal rails atop said cross end pieces. A threaded track connection hole  613   FIG. 5   g  is located near an end of each of said longitudinal rail connector pieces. 
     Said end frame subsections  581   a  and  581   c  also each further comprise in part a set of adjustable support and leveling foot assemblies  590   FIG. 5   h ; each of said leveling foot assemblies comprising a steel channel foot support strap  591   FIG. 5   g , said support straps each being pierced by a central screw hole  615   FIG. 5   g , designed for a placement of a central alignment screw  617   FIG. 5   g  that passes above into an end cross piece foot strap support alignment hole  616   FIG. 5   g ; once said alignment screw  617  has formed a connection between said end cross piece and said foot support strap, a pair of foot assembly bolts  592 ,  593   FIG. 5   g  can make a passage of through a pair of foot support strap holes  591   a ,  591   b    FIG. 5   g  in foot support strap  591  and thence can make a passage into and through a pair of cross support end piece attachment holes  596 ,  597   FIG. 5   g  located in said cross support end piece  584   b , following which said bolts  592  and  593  can be anchored by a placement of a pair of foot assembly bolt nuts  592   a  and  592   b    FIG. 5   g , completing an attachment of said foot assemblies to said base section of said gantry. 
     Each of said foot assembly bolts  592  and  593   FIG. 5   g  are seen to bear a pair of leveling nuts  598 ,  599   FIG. 5   g , and, a head end of each of said bolts is in a welded affixation atop a pair of steel foot assembly foot plates  594 , 595   FIG. 5   g.    
     A set of the adjustable support and leveling feet being in a location at each corner of said end frames  581   a  and  581   b    FIG. 5   e , said leveling nuts  598 , 599  are used to provide a leveling of said base section when said sawmill is being set up. Other sets of said leveling foot assemblies are placed in a supporting attachment at intervals along the track sections of  505   c  and  505   d  of base subsection  581   b    FIG. 50   
     Note modular subsection  581   c , as seen in  FIG. 5   e , partially comprises a right side longitudinal track section  505   e  and a left side longitudinal track section  505   f , with said cross support end pieces comprising a rear cross piece  584   c  and a front cross piece  584   d.    
     Modular subsection  581   b    FIG. 5   e  comprising said log retention portion of the sawmill apparatus comprises in part a pair of longitudinal track sections  505   c  and  505   d    FIG. 5   e , a right side track  505   a  and a left side track  505   b    FIG. 5   e.    
     Each of said longitudinal track sections of base section  581   b  being of a same length and structural configuration, a description of track section  505   c  will be presented as representative of both rail track sections  505   c  and  505   d ; there are no end cross pieces for base subsection  581   b . Longitudinal track section  505   c  of subsection  581   a  comprises an angle iron section situated with a 90.degree angle of said angle iron situated in a vertical orientation; each end of track section  505   c  bearing a track connecting tab  601   FIG. 5   g , which said tab is welded on an inner aspect of an external side wall of said angle iron section  505   c ; and, each of which said connecting tabs is tapped with a threaded track connecting tab bolt hole  614   FIG. 5   g  for a receipt of a connecting tab bolt  602   FIG. 5   g.    
     When an end of said track section  505   c    FIG. 5   g  of said log containment section  581   b  is brought into an approximation with an end of track section  505   a  of said end subsections  581   a  of said base of said sawmill apparatus, said connecting tab bolt  602  passes through the connecting bolt hole  603  in the  505   a  longitudinal rail section, and thence into the connecting bolt hole  604  in the guide rail connecting tab  601 ; thus completing a union of the right section of the log bearing subsection  581   b  to the right section of the rear end subsection  581   a    FIG. 5   g.    
     An exact same process involving identical parts as that described immediately prior serves to connect a front end of said track section  505   c    FIG. 5   e  to a rear most end of track section  505   e    FIG. 5   e  of front end base subsection  581   c    FIG. 5   e , so no further description is provided for disclosure of that interconnection. 
     Referring again to  FIG. 5   e , a similar connection using exact same parts suffices for establishing a connection between the rear track section  505   d  of subsection  581   b  and track section  505   b  of base subsection  581   a  as well as the front end of track section  505   d  of the base subsection  581   b  to a rear end of track section  505   f  of the base subsection  581   c ; so no further description of those interconnections is provided. 
     An interconnection between a series of track sections  505   a,c,e  and  505   b,d,f    FIG. 5   e  of base subsections  581   a ,  581   b  and  581   c    FIG. 5   e  serves to provide a completion of a union of a full base framework  580   FIG. 5   e  of said base section of said sawmill apparatus, providing thus a rolling track for said gantry along a full horizontal length of said log or other such chainsaw cuttable material. 
     For a purpose of placing said log  503   FIG. 5   b  or other suitable substrate into said sawmill for cutting, after a selection of and a leveling of an appropriate site for a situation of said sawmill apparatus, said log can be placed into a centrally located positional situation and a series of wedges or other such log stabilization devices are placed in order to preserve an alignment of said log  503   FIG. 5   b  within said selected sawmill site; 
     An assembly of said base section  580   FIG. 5   e  is performed in a manner providing an alignment of said base section around and along a longitudinal length of said log; 
     said gantry, can now be placed into a situation atop base subsection  581   a  following which said travel control ropes of said gantry can be brought into an attachment with a set of corresponding end section cleats  104 / 107 / 110 / 113   FIG. 12  of said base section; said saw carriage assembly, mounted upon said transverse guide rails of said transverse guide rail assembly can then be brought into an attachment within said gantry; said chainsaw can then be attached to said saw attachment assembly of said carriage assembly and said vertical cut depth gauge placed into position; said remote trigger control attached between said saw and said remote trigger control handle and all is in a preparation for making a first cut in said log or other suitable substrate 
     Note: said series of four travel rope connector cleats  104  and  107  are seen at a front end of base subsection attached to forward end cross piece  584   d  and cleats  110  and  113  are seen at a rear end cross piece  584   a  in  FIG. 12 . These have been described prior in relation to the gantry forward travel assembly. 
     In an alternative manner, after a selection of and a leveling of an appropriate site for a situation of said sawmill apparatus, said base section  581   a/b/c    FIG. 5   f  can be set up in a partial manner comprising a full assembly of said end sections  581   a/c    FIG. 5   f , which said end sections are in a completed attachment with said left side track section  505   d    FIG. 5   f  of said log containment section  581   b ; said right side track section  505   c    FIG. 5   f  being in an unattached state relative to said end sections is in a location away from said sawmill base section; said log is then placed into a centrally located positional situation and a series of wedges or other such log stabilization devices are placed in order to preserve an alignment of said log  503   FIG. 5   b  within said base section of said selected sawmill site; at this point said right side track section  505   c  is brought into an alignment with and an attachment to end section tracks  505   a/e , creating thus a completion of said base section; 
     following which said gantry, can now be placed into a situation atop base subsection  581   a , following which said travel control ropes of said gantry can be brought into an attachment with a set of corresponding end section cleats  104 / 107 / 110 / 113   FIG. 12  of said base section; said saw carriage assembly, mounted upon said transverse guide rails of said transverse guide rail assembly can then be brought into an attachment within said gantry; said chainsaw can then be attached to said saw attachment assembly of said carriage assembly and said vertical cut depth gauge placed into position; said remote trigger control attached between said saw and said remote trigger control handle and all is in a preparation for making a first cut in said log or other suitable substrate 
     Alternative Body Components of Carriage Assembly 
     The carriage component of the invention can be modified to allow of a use of the invention within other sawmill apparatuses having a transverse guide rail component differing from that of the current invention. 
     In a first alternative embodiment a body assembly comprising in part an elongated, parallelepiped shaped body member, is of a design for a use with a transverse guide rail assembly having a pair of angle iron guide rails; a rear and a front guide rail each of which has one wall of the angle iron facing vertically, a pair of vertical slots near the front and the rear of the base of the body section, and, partially extended up the side walls of the body section could replace the circular holes in the side walls of the preferred embodiment described prior; the vertical slots would serve as a guide for the carriage to slide along the transverse guide rails. With said body situated with said base slots straddling said angle iron guide rails, a full width movement of said body section would be possible and a locking of an integral locking mechanism of said body section could allow a fixation at any point along said guide rails; a hinged L frame chainsaw positioning element attached to the body section would allow cutting in either of a vertical or a horizontal planar attitude. 
     Alternatively, a wheeled parallelepiped carriage framework component comprising in part an elongated, six faced, open sided box having a bottom subsection, a top subsection, a left side subsection, a right side subsection, a rear face subsection and a front face subsection; 
     In which each of which said front and rear face subsections is in an attachment with a set of at least three externally attached wheels of matching size via a set of axle bolts; said wheels being in a positional situation at three like corners of each of said rear face and front face walls; forming thus a minimally six wheeled carriage; 
     since said carriage is designed to provide an allowance of a selective positioning of a blade of a chainsaw in either a perpendicular or a horizontal plane of cutting orientation, for purposes of clarity said wheel pairs shall be described as wheel pair A, wheel pair B and wheel Pair C; a rolling plane of each of said wheels is in an alignment along said front and said rear faces of said carriage and along said pair of transverse guide rails of said gantry; 
     in a first functional pairing, with said carriage in a situation upon said guide rails such that said blade of said saw is in a planar attitude for a making of a vertically oriented cut or series of cuts, said wheel pair A is in an inoperative position off of the guide rails; wheel pairs B and C are in an operative position, both sets being in contact with the guide rails; 
     after a lifting of the carriage off the guide rails, and a turning through a 90.degree arc creating thus a second functional pairing, with said carriage in a situation upon said guide rails such that said blade of said saw is in a planar attitude for a making of a horizontally oriented cut or series of cuts, said wheel pair C is in an inoperative position off of the guide rails; wheel pairs B and A are in an operative position, both sets being in contact with the guide rails; 
     In a third alternative embodiment, for a Sliding Rail Carriage Component, carriage framework component comprising in part an elongated, six faced, open sided box having a bottom subsection, a top subsection, a left side subsection, a right side subsection, a rear face subsection and a front face subsection; 
     with two adjacent sides of said front and rear face subsections being in a fixed attachment atop an angle iron rail situated with the 90.degree angle in a vertical alignment and a V shaped opening facing downward; it is readily seen that a placement of one open sided inverted V rail on an angle iron guide rail would align the body section such that a cutting blade would be in a situation for making a vertical cut; a repositioning of the body section on the second V rail, which is situated at a 90.degree angle to the first V rail, would situate a cutting blade for making a horizontal cut.