Year: 1888

page_text: County, State of Wisconsin, United States of America.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex, M.I.M.E.
do hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
The main objects of this invention are to prevent contact between the saw and
timber when the log carriage is run back; to adapt the parts of which the machine
is composed interchangeably to right and left sawing machines; to adjust the plane
of the saw with reference to the line of travel of the carriage; to so combine a
circular with a band saw-machine as to readily change from the one to the other as
desired, etc.
It consists essentially of a supporting standard or column carrying the saw and its
connections which are capable of angular movement with said column about its axis ;
of a laterally movable log carriage, and offsetting mechanism connected therewith,
arranged to move said carriage up to the saw line when it advances, and away from
the saw line when it recedes; and of certain other peculiarities in the construction
and arrangement of the machine bereinafter specifically set forth.
In the accompanying drawings like letters designate the same parts in the several
figures. Fig. 1 is a front elevation of the saw and its connections, showing the log
carriage in end elevation; Fig. 2 is a horizontal section on the line xx, Fig. 1,
showing a plan view of the base of the machine and of the log carriage; Fig. 3 is a
plan view of the band-saw-guide supporting arm, showing the supporting column in
horizontal section; Fig. 4 is a rear elevation of the adjustable bearing supporting
the rear end of the upper band wheel shaft; Fig. 5 is a side elevation of the saw-mill,
including a portion of the log carriage; Fig. 6 is a detail view of one of the carriage
offsetting screws and its immediate connections, and Figs. 7 to 10 inclusive illustrate

page_text: modifications of the offsetting screw, which in the construction there shown takes the
form of a cam slot or groove.
A A¹ is an upright supporting standard or column preferably cast to facilitate its
manufacture and transportation in two sections, which are permanently secured
together by means of coupling flanges and bolts when the apparatus is set up. It is
supported and arranged to turn about its axis in a step C at its lower end and at an
intermediate point in a box attached to a suitable frame or support C.
B B are the band wheels which are mounted upon horizontal shafts B¹ B¹ and carry
the band saw indicated by dotted lines in Figs. 1 and 5. The lower section A of the
supporting column is provided with lateral arins a a furnished at their extremities
with boxes for the lower band wheel shaft B₁. The upper section A¹ of said
supporting column is formed with ways for and carries-at-its-upper end a vertically
movable T-shaped frame which is provided at the extremities of its horizontal_limb
with boxes for the upper band wheel shaft. The lower segments of these boxes
are hinged horizontally between the bifurcated ends of vertical journals 6363, which
rest in sockets formed for their reception in the overhanging ends of the T-shaped
frame A2, as shown in Figs. 1 and 5.
The box shown in detail in Fig. 4, is adjusted horizontally and laterally by means
of the screw working in its lower segment and bearing at each end in the bifurca-
tions of the journal 68 which supports it; and it is adjusted vertically by a screw 65
working in said journal and bearing in the T frame A². Both boxes thus have
universal joint connections with said T-frame and the box is besides capable of
horizonial and vertical adjustment for the purpose of "training" the upper band
wheel and causing the band saw to run properly thereon.
E is a vertical screw working with a nut a² on the T-frame A2 and bearing at its
lower end in a short step lever 1, which is fulcrumed in a bracket A* attached to the
front side of the supporting column.
E' is a crank shaft supported in suitable bearings on said bracket A* and provided
at one end with a crank wheel and at the other with a bevel gear e' which works with
a similar bevel gear e on the screw E for the purpose of raising and lowering the
Tframe A and the upper band wheel, and properly straining the band saw.
The free end of the step lever 1 is connected with the shorter arm of a lever I'
which is fulcrumed to the side of the supporting column and is provided with.a
weight adjustable upon its longer arm, so as to counterbalance the upper. band
wheel and allow it to yield slightly when an obstruction is met by the saw or it is
subjected to a sudden strain.
For the purpose of changing the "lead" or the plane of either the circular or band
saw with reference to the line of travel of the log carriage, and for the purpose of
moving the band saw laterally away from the log when the carriage makes its return
movement, to the back side of the supporting column is attached a bracket arm A³
provided at its end with an internally screw threaded box in which works a scrow
shaft F having a fixed bearing in or working with an internally screw threaded
box attached to the frame of the machine. This screw, shaft is provided with a
lever F which has a limited angular movement between adjusting bolts c c² in the
terminals of the are or sector c', as shown in Figs. 1, 2 and 5. By means of these
adjusting bolts c² the angular movement of the supporting column and saws may be
nicely adjusted.
As is a guide supporting shoe movable in vertical ways formed therefor on either
side of the column A' so as to be employed either in a right or left. hand machine,
and provided with a nut a³, shown in Fig. 3, which projects into a transverse vertical
slot in said column, and is engaged by a vertical screw shaft D, which has a bearing,
at its upper end in the T frame A and is provided at its upper, end with a bevel
friction wheel d¹ and at its lower end with a bevel gear d. Upon the upper band wheel
shaft B is mounted a sleeve D' movable endwise, but prevented from turning thereon
by a spline or feather, as shown in Fig. 5. It is provided with a pair of bevel friction
wheels on opposite sides of and arranged to work with the friction wheel d' at
the upper end of the screw shaft D.

page_text: The sleeve D' is formed at one end with circumferential ribs or grooves &³ engaged
by and working with a similarly ribbed or grooved half box pivoted to the upper
end of the lever d', which is fulcrumed to the T frame A. By means of this lever d
either friction wheel d² may be moved into engagement with the friction wheel d¹ and
the screw D thereby rotated in either direction as desired to raise or lower the shoe A³
and the guide thereto attached. When the lever is in its middle position neither of
the friction wheels 2 engage the friction wheel d. To operate the screw D when the
band saw is not in use a crank shaft D³ is provided, shown in Figs. 2 and 5, furnished
with a crank wheel and with a bevel gear arranged to work with a similar gear d
on the lower end of said screw. When the band saw is to be used an L-shaped
guide arm J provided with a band saw guide J2 of suitable construction is bolted to
the shoe A, as shown in detail in Fig. 3. When the circular saw is to be employed
the guide J2 and its arm J³ are replaced by a circular saw guide J of any suitable
construction and a straight guide-supporting arm J', as shown in Figs. 1 and 5. A
lower band saw guide (not shown), similar to that shown in Fig. 3, or of any suitable
construction is preferably employed in connection with the upper guide.
Where
band saws are employed, it is frequently desirable to change from the band to a
circular saw for certain kinds of work, as for example, when small, rough logs are to
be sawed a circular saw can be used to better advantage. To facilitate the change
from one saw to the other is the object of the construction next described, although
the same construction possesses decided advantages when used with a circular saw
alone.
Section A' of the central supporting column is formed at or near its lower end at
right-angles to the band wheel shafts with laterally projecting arms at a', which have
at their extremities flanges for the attachment of extensions G1 G2, shown in Fig. 2.
These extensions are provided with boxes h h for the circular saw mandrel H, which
passes through the transverse vertical slot in said section A¹ of the supporting column.
The arm G is formed at its outer end on opposite sides with longitudinally slotted
cross arms G3 G3, which carry the front and rear circular saw guides G G adjustably
attached thereto by bolts g g passing through the slots go therein. By casting the
short arms a a² on section A' of the supporting column the circular saw bearings can
at any time be readily attached thereto.or detached therefrom as desired.
The lower band wheel shaft is provided at its rear end with a pulley B² and the
circular saw mandrel H is provided at the end opposite the saw with a pulley H² and
by means of these pulleys either saw is connected with a suitable driving shaft or
source of power. The central supporting column being constructed either for a right
or a left hand machine and the saw guides and other attachments being reversible,
permit the employment of the saw and carriage on either side, thus adapting the
machine to various conditions in which it is desirable to use it.
K represents the frame of the log carriage movable laterally upon its axles L'.
L L are the carriage supporting wheels, which travel upon track rails M M in the
usual manner, the wheels on one side of the carriage being grooved to engage the
V-shaped rail on which they travel and thereby guide their movement. At the side of
the carriage opposite the saw one or more of the axles L' is or are extended and bear
in externally screw threaded sleeves 0, which in turn work in internally threaded
boxes & and are formed at their outer ends with right-angled arms oo 02, shown for
convenience of illustration in Figs. 1 and 2, in a position midway between the limit
of their angular movement. The boxes kk are formed in or attached to brackets K' K'
which are attached to the carriage frame K and are recessed to receive between
them and said carriage frame the adjacent carriage wheels L L, as shown in Fig. 2.
Upon the ends of the carriage axles L projecting beyond the arms o o are
mounted friction wheels N N secured thereon by nuts n n. The screw threaded
sleeves O bear at one end against the hubs of the adjacent carriage wheels Land
at their other end against the hubs of the friction wheels N, and have no independent
endwise movement upon the carriage axles.
PP are friction slioes adapted to the periphery of said friction wheels and formed
with lateral projections which engage the upper. and under sides of the arms oo, as

page_text: shown in Figs. 1 and 2, on opposite sides of each friction wheel N. pp are springs
hearing at their ends against terminal projections on the outer faces of said friction
shoes, and held in engagement therewith by set bolts o'o' working in lateral pro-
jections at the ends of the arms o o, and bearing at their tips centrally against the
outer faces of said springs, as shown in Fig. 5.
To insure a like and simultaneous movement of the several screws O and a uniform
lateral movement of the carriage frame K, the crank arms o' are connected by a
rod. The lateral movement of the carriage frame K is limited in one direction by
collars 1. 1, fixed upon the carriage axles L' and in the other direction by the adjacent
carriage wheels L'between which and said collars the axle boxes on the corresponding
side of the carriage are moved lengthwise of said axles in offsetting said carriage
frame.
In Figs. 7. 8, 9 and 10 are shown modified forms of the offsetting screws (which in
this construction partakes of the nature of cams) and the boxes in which they work.
Referring to Figs. 7 and 8, is an inclined groove or cam formed in the lower half
of the box and of a lug or projection formed on the sleeve and working in said
groove.
Referring to Figs. 9 and 10, ² is a curved or oblique groove or cam formed in the
lower section of the box and extending sufficiently into the upper section to permit of
the necessary movement of the projection or segment of the screw thread on the
sleeve 02 working therein. These modifications operate in precisely the same manner
and produce the same effect as the screws 0 (of which they are equivalents) shown in
the other figures.
The improved offsetting device operates as follows:-
When the carriage is started forward the friction wheels N, turning with the
carriage axles and bearing in the shoes P, engage and turn the arms oo and the
screws in the same direction, the connecting rod of insuring the simultaneous and
like angular movement of both the offsetting screws. The screws O, turning in the
boxes, act through the brackets K! upon the carriage frame K, carrying it towards
the saw line til! the axle boxes on the adjacent side of the carriage frame, engage the
collars and arrest the farther movement of said carriage frame in that direction,
as shown in Fig. 1. Friction wheels N now slip in the shoes P until the travel of the
carriage is reversed. When the screws O are turned in the manner described in the
opposite direction the carriage frame K is moved laterally away from the saw line
into the position shown in Fig. 2, said axle boxes engaging the hubs of the adjacent
carriage wheels and preventing the farther movement of said carriage frame in that
direction. The degree of frictional engagement between the wheels N and the
shoe P may be adjusted as desired by means of the set bolts o'.
By the employment of this improved offsetting mechanism the carriage frame is
automatically shifted laterally towards and from the saw line whenever and at whatever
points the travel of the carriage is reversed. I do not wish to confine myself to the
precise construction shown in the drawings, as various modifications may be made in
the construction and arrangement of the improved sawing machinery without change
in the mode of operation of the mechanism composing it.
Having now particularly described and ascertained the nature of the said invention,
as communicated to me by my foreign correspondent, and in what manner the same
is to be performed, I declare that what I claim is :-
1. In sawing machinery, the combination of an upright, supporting column
movable about its axis, band wheels supported by and movable with said column, a
band saw mounted upon said band wheels and a circular saw supported by and
movable with said column, substantially as and for the purposes set forth.
2. In sawing machinery, the combination of an upright column supported by, and
capable of angular movement in, suitable bearings and provided on opposite sides
with laterally projecting bracket bearings, a circular saw and its mandrel supported
transversely to said column in said bracket bearings, a saw guide attached to an arm
projecting laterally from said column and partaking of its angular movement and

page_text: mechanism for imparting an angular movement to said column, substantially as and
for the purposes set forth.
3. In sawing machinery, the combination with an upright column movable about
its axis and provided with lateral arms and bearings for a circular saw mandrel, a
circular saw supported in said bearings and movable with said column and a vertically
adjustable guide support working in ways on said column, substantially as and for the
purposes set forth.
4. In sawing machinery, the combination with an upright column movable about
its axis and furnished with bearings for a horizontal saw mandrel and with vertical
ways for a guide support, of a circular saw mounted upon said mandrel, a guide
supporting arm movable vertically upon said ways and an adjusting screw working
with said supporting arm, substantially as and for the purposes set forth.
5. In sawing machinery, the combination with an upright column arranged to be
turned about its axis, of arms extending laterally from said column and provided with
boxes for a saw mandrel, cross arms projecting transversely to said saw mandrel from
its adjacent supporting arm and guides adjustably attached to said cross arms and
working with the saw in front and rear of the mandrel, substantially as and for the
purposes set forth.
6. In sawing machinery, the combination with band wheels and their shafts, of an
upright supporting column capable of angular movement about its axis and provided
with bearings for a circular saw mandrel and with bearings for said hand wheel
shafts, substantially as and for the purposes set forth.
7. In sawing machinery, the combination of a supporting column arranged to swing
about a vertical axis, band wheels carried by said column and a band saw mounted
upon said wheels, substantially as and for the purposes set forth.
8:In sawing machinery, the combination of band wheels and their connections
movablo about a common axis, and mechanisin connected with and arranged to swing
said band wheels and their connections simultaneously towards and away from the
log-carriage way, substantially as and for the purposes set forth.
9. In sawing machinery, the combination of an upright column supported and
arranged to swing about its axis in suitable bearings, band wheels and their shafts
supported by and movable with said column, a screw working in a nut in connection
with said column and bearing or engaging with a fixed box and means for operating
said screw, substantially as and for the purposes set forth.
10. In sawing machinery, an upright supporting column composed of two sections,
the lower section of which is furnished with bearings for a lower band wheel shaft
in combination with a vertically adjustable frame mounted upon the upper section and
furnished with hearings for the upper hand wheel shaft, all arranged to be swung in
suitable bearings about an upright axis, substantially as and for the purposes set
forth.
11. In sawing machinery, the combination of an upright supporting column bearing
at its lower end in a step and at an intermediate point in a box permanently secured
to a suitable support or frame, band wheels and a saw carried by and movable with
said column about its axis, substantially as and for the purposes set forth.
12. In sawing machinery, the combination with band wheels and saw, of an upright
supporting column capable of angular movement about an upright axis, a vertically
adjustable frame movable in ways provided therefor on said column and furnished
with bearings for the upper band wheel shaft and mechanism arranged to raise and
lower said frame, substantially as and for the purposes set forth.
13. In sawing machinery, the combination of a supporting colum, a T-frame
having a central, upright linh movable in vertical ways on said column, and a
horizontal section, both ends of which project heyond said column, boxes attached to
the projecting ends of said horizontal section by universal joint connections, the box
opposite the upper band wheel being vertically and laterally adjustable, and the
upper band wheel shaft bearing in said boxes, substantially as and for the purposes
set forth.

page_text: 14. In sawing machinery, the combination of the band wheels and saw, an upright
supporting column, a vertically adjustable frame mounted thereon and furnished with
bearings for the upper hand wheel shaft, a screw working with a nut on said frame
and bearing at the lower end in a step lever fulerumed to said column, a weighted lever
connected with the free end of said step-lever and fulcrnmed transversely thereto on
said column and means for turning said screw, substantially as and for the purposes
set forth.
15. In sawing machinery, the combination with the band wheels and saw, of an
upright supporting column provided on opposite sides with ways, a reversible and
vertically adjustable guide arm or slide adapted to the ways on either side of said
column, a guide attached to said guide arm or slide and means for raising and
lowering said guide arm or slide with its guide, substantially as and for the purposes
set forth.
16. In sawing machinery, the combination with the band wheels and saw of a
guide mounted upon a vertically adjustable slide, a supporting column provided with
ways for said slide, an upright screw working with a nut on said slide and provided
with a friction wheel, a sleeve feathered on one of the band wheel-shafts and provided
with a pair of friction wheels, either of which is capable of working with the friction
wheel on said screw and a lever connected with and arranged to move said sleeve
end wise on said shaft, substantially as and for the purposes set forth.
17. In sawing machinery, the combination with the, band wheels and saw of an
upright supporting column movable about iis axis, a lever connected with and
arranged to turn said column and an adjustable stop arranged to limit the angular
movement of said column, substantially as and for the purposes set forth.
18. In sawing machinery, the combination with the band wheels and saw of an
upright supporting column, a vertically adjustable frame mounted upon said-column,
journals hearing in vertical sockets formed therefor in. said frame, boxes horizontally
hinged to the heads of said journals and supporting the upper band wheel shaft and
adjusting screws arranged to move the box farthest from the upper hand wheel
vertically and horizontally, substantially as and for the purposes set forth.
19. In sawing machinery, the combination with the band wheels and saw of a
centrally slotted supporting column, a vertically adjustable frame mounted thereon-
and carrying the upper band wheel, an upright screw shaft centrally journaled in said
frame, a reversible guide supporting arm adapied to ways on either side of said column
and provided with a nut working in either position with said screw shaft and means for
driving said screw shaft from said upper band wheel shaft, substantially as and for the
purposes set forth.
20. In sawing machinery, the combination with the saw of a laterally movable log
frame and its supporting wheels and axles, offsetting mechanism connecting said
carriage frame and its supporting axles and a friction wheel or wheels connected. with
said offsetting mechanism and arranged to actuate the same and to move said log
frame transversely to its line of travel, substantially as and for the purposes set
forth.
.
21. In sawing machinery, the combination with. the saw and log carriage of a log
frame laterally movable with reference to the travel of said carriage, axles L
carriage wheel L. friction wheel N applied to said axle, screw O and shoe P connected
with said screw and bearing upon said friction wheel, substantially as and for the
purposes set forth.
22. In sawing machinery, the combination with the saw and log carriage of a
laterally movable log frame, its supporting wheels and axles, screws mounted upon
said axles and working in threaded boxes secured to said log frame, crank arins formed
on or attached to said screws, shoes connected with said crank arms and working
with said friction wheels, springs interposed hetween said shoes and projections on said
crank arms and adjusting bolts working in said crank arms and bearing against said
springs, substantially as and for the purposes set forth..
23. In sawing machinery, the conibination with the saw and log carriage. of a log

page_text: frame capable of lateral movement on its axles, a screw or screws arranged to move
the log frame laterally and actuating mechanism connecting said screw or screws with
one or more of said axles, substantially as and for the purposes set forth.
24. In sawing machinery, the combination with the saw and log carriage, of a
log frame arranged to move laterally upon its axles, an offsetting screw or screws, a
friction wheel secured on one of said axles and provided with a shoe or strap and
mechanism connecting said shoe or strap with said screw or screws, substantially as
and for the purposes set forth.
25. In sawing machinery, the combination with the saw of a laterally movable
log carriage and offsetting mechanism connected with said carriage and arranged to
move the same laterally towards or from the saw line when the travel of the carriage
is reversed, substantially as and for the purposes set forth.
26. In sawing machinery, the combination with the saw of a laterally movable log
carriage, offsetting mechanism connected therewith and a friction wheel connected
with said offsetting mechanism and arranged to actuate the same when the travel of
the carriage is reversed, substantially as and for the purposes set forth.
Di
35
1000