Improvements in Shingle Sawing Machines.
Year: 1895

page_text: Date of Application, 13th June, 1895-Accepted, 13th July, 1895
COMPLETE SPECIFICATION.
Improvements in Shingle Sawing Machines.
We, ROBERT JOHN ALFORD, and ELIAS MORTON WILKINSON, of Patterson,
in the County of Wythe, and State of Virginia, United States of America,
Gentlemen, 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 :-
This invention relates to shingle sawing machine and has for its object to provide
an adjustable mechanism in connection therewith of a simple, cheap, and substantial
nature, which will saw the shingles the same thickness from start to finish, and
requires but comparatively little power to run it.
A further object
as far as the saw.
to provide a self feeder wherein the head block will only run
With these and other objects and advantages in view, the invention consists of
the construction and arrangement of the several parts which will be more fully
hereinafter described and claimed.
In the drawings,
Figure 1 is a perspective view of a machine embodying the invention.
Figure 2 is a top plan view of the same.
Figure 3 is a similar view with the carriage removed.
Figure 4 is a detail perspective view of the carriage, looking toward the bottom
thereof and showing it broken away in part.
Figure 5 is a section on the line x-x, Figure 2.
Figure 6 is a detail view of the shaft carrying the detent mechanism for the
shingle-gages and parts co-operating therewith.
Figure 7 is a sectional detail view of the pivoted folding stop for engaging the
releasing lever of the detent mechanism.
Figure 8 is a bottom plan view of a portion of the under side of the carriage,
showing the lever and a step-by-step movement to the head-block.
Figure 9 is a detail perspective view of said lever with the pawl operating
therewith attached.
Figure 10 is a detail top plan view of one end of the carriage.
Figure 11 is a detached perspective view of the two parts of the shingle-gage
and their co-operating parts.
Similar numerals of reference are employed to indicate corresponding parts in
the several views.
Referring to the drawings, the numeral 1 designates a frame of suitable con-
struction and of a portable nature, having a drive shaft adjacent to one end thereof,
supplied with a cone pulley 3 having a belt 4, running to a similar pulley 5 on the
saw mandrel 6 carrying at its inner end a saw 7, and at its outer end a pulley 8, to
which power is applied for driving the entire machine. The shaft 2 is a secondary
shaft which serves the function of driving the major part of the mechanism and has
thereon a small belt pulley 9, engaged by a belt 10 which runs to an upper pulley 11
on a feed shaft 12, the latter also carrying a sprocket wheel 13.
On the frame at a distance from the shaft 12 is another shaft 14 carrying a
sprocket wheel 15, and over the said sprocket wheels 13 and 15 a chain belt 16
travels and thereto is connected the rear end of a connecting bar or rod 17 whose
opposite end is movably attached to the under side of a carriage 18. The said
carriage 18 has a slot 19, extending through the bottom and a portion of the sides

page_text: thereof to permit the said carriage to travel over the saw and to the under side of
the carriage are pivotally or movably attached track wheels 20 which engage
tracks 21 on the frame on opposite sides of the feed mechanism. The under outer
corner of the carriage is supplied with a flat lever 22 having a depending, obliquely
arranged flange 23 at its outer free end, adapted to engage pins 24, rising from a
bracket 25 secured to the outer corner of the frame. The said pins on the bracket
are spaced apart and permit the flange on the lever to pass between the same, and
as the carriage moves backwardly, the said flange passes between the pins and
throws the rear end of the lever inward on its pivot 26. The rear end of the said
lever has an upwardly projecting lug 27, which projects through a slot 28 in the
bottom of the carriage and is pivotally attached to a pawl or dog 29, mounted in
the outer open end of the carriage, and having a nose 30, which is normally held
in engagement with ratchet teeth 31, along the adjacent edge of a head block shank
or presser bar 32 held in connection with the bottom of the carriage and adjustable
therein.
The inner end of the head block shank or that nearest the saw, is provided with
a head block 33 in the form of a roller, which is vertically disposed and has an
antifrictional bearing on the material being cut. The outer portion of the head
block shank is provided with an operating handle 34, by which the head block may
be adjusted inward or outward. At the opposite part of the carriage, and with
which the head block co-acts, is a shingle gage consisting of two sections 35 and 36,
and extending across the width of the said carriage. The section 35, is pivotally
secured to the block 37, adjustably secured to the bottom of the carriage the said
block 37, being slotted at 38, and therefore adjustable to and from the head block
by a set bolt and screw 39. The said section 35, remains stationary until the
mechanism is operated to rotate it at intervals on its pivot, and the section 36 is
movably mounted on the section 35, and has attached thereto at one end the
head 40 of an outwardly extending lever 41, while the opposite end of said movable
section 35 has a link 42 connected thereto to equalize the movement in adjusting
the said movable section. Of course, it will be understood that this movable
section is for the purpose of regulating the inclined planes of the shingles, and the
slotted hinge block when adjusted to move the stationary section 35 toward the
head block, regulates the thickness of the shingle.
On a block 43 is mounted a disk 44 having oppositely disposed notches 45 which
are diametrically arranged, the said disk being carried on the upper end of a short
vertical shaft 46, and having eccentrically attached thereto a link 47, whose
opposite end is pivotally connected to the adjacent portion of the upper surface of
the stationary section 35 of the shingle gage. Normally engaging one or the other
of the notches in the disk is a tooth 48 carried by a spring pressed lever 49, whose
end projects outwardly from the carriage similarly to the lever 41, though not to
such a great extent, and for a purpose which will be presently described.
On the lower end of the shaft 46, is loosely mounted a pinion 50 which projects
from the end of the carriage and has secured thereto a spring pawl 51, engaging a
ratchet wheel 51* on said shaft, whereby connection is made with said pinion 50
and shaft 46, in one movement of said ratchet wheel and the same is broken in the
other movement of said ratchet, or, in other words, to hold the disk on the upper
end of the shaft stationary in one of the movements of the carriage. On the top of
the frame adjacent to the inner edge of the carriage is secured a toothed block or
bar 52, which is engaged by the pinion 50, and in conuection with the said block is
a vertically disposed finger 53 adapted to swing down in one direction and to be
normally retained in its upright position by the spring 53. It is also in the path
of and adapted to engage the lever 49.
Cn the forward movement of the carriage in the direction of the arrow, Fig. 1,
the lever 41, strikes against a short post 55, rising from the frame in the path of
the movement of the said lever to adjust the shingle gage gradually in accordance
with the desired inclination of the face of the shingle, and again strikes a similar
post 54 on its return movement to loosen the shingle and permit it to fall to the

page_text: floor. In the same movement of the carriage, the lever 49, also engages the outer
side of the finger 53, passing over the same by depressing it, and holds the adjacent
end of the shingle gage in adjustment, but on the return movement of the carriage,.
the said lever 49 again engages the finger and is mounted on its pivoted to release
its tooth from the disk and permit the pinion 50 to revolve the shaft 46 and change
the adjustment of the adjacent end of the shingle gage. This operation becomes
automatic in the successive movements of the carriage and in addition to the
operation of the head block as heretofore described, the whole mechanism
uniformly coacts in connection with the material being operated upon and requires
the attention of but one person to run it.
It is obviously apparent that many minor changes in the construction and
arrangements of the several parts might be made and substituted for those shown
and described, without in the least departing from the nature or spirit of my
invention.
To control the movement of the carriage, a belt-tightener 55* is employed,
wi.ose operation will be readily understood.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :
1. In a shingle sawing machine, the combination with a frame having a circular
saw mounted therein, carrying mechanism for transmitting power and having a
bracket with two projecting pins therein, of a carriage having a slot therein for
the passage of the saw therethrough, a movable presser-bar for holding the
material to be sawed and mechanism for imparting a step by step movement to
said presser bar, the same consisting of a lever pivoted to the under side of said
carriage having an obliquely arranged flange engaging the pins on said bracket,
and a spring-actuated pawl at the other end of said lever engaging notches on the
side of said presser bar, whereby upon the reciprocation of the carriage the said
lever is vibrated on its pivot and through the pawl thereon, a forward movement of
said presser-bar is given at each backward movement of said carriage, substantially
as and for the purpose described.
2. In a shingle sawing machine, the combination with a frame having a circular
saw mounted therein and carrying mechanism for transmitting power, of a carriage
adapted to reciprocate on said frame having a presser-bar thereon, an adjustable
gage-block for the shingles made in two parts, one of which is pivotally secured to
the bottom of said carriage for gaging the angles of the sides of the shingles
and the other adapted to move in a horizontal direction from the first part but held
at all times parallel thereto, substantially as and for the purpose described.
3. In a shingle sawing machine, the combination with a frame having a circular
saw mounted therein and carrying mechanism for transmitting power, of a carriage
adapted to reciprocate on said frame having a presser bar thereon, an adjustable
gage-block for the shingles made in two parts, one of which is pivotally secured to
the bottom of said carriage and the other flexibly secured to the first part and
adapted to move in a horizontal direction therefrom, but at all points parallel
thereto, detent mechanism for holding said first part at its limit of pivotal
movement in both directions and means for moving the second part relatively to
the first part, substantially as and for the purpose described.
4. In a shingle sawing machine, the combination with a frame having a circular
saw mounted therein and carrying mechanism for transmitting power, of a carriage
adapted to reciprocate on said frame having a presser bar thereon, a gage block
made in two parts, mounted upon an adjustable block, one of which parts is
pivotally secured to said adjustable block and the other flexibly secured to the first
part and adapted to move in a borizontal direction therefrom but at all points
parallel thereto, detent mechanism for holding said first part at its limit of pivotal
movement in both directions, consisting of a shaft having secured thereto a notched
disk which notch is engaged by a dog on a spring-actuated lever secured to the

page_text: bottom of said carriage, and means for moving said second part relatively to the
first and second parts and adapted to reciprocate, releasing mechanism for said disk
consisting of an upright on the frame of the machine which engages the detent
lever, mechanism for rotating said disk upon one movement of the carriage and
for keeping it stationary upon the reverse movement thereof, which consists of a
rack bar secured in the frame of the machine engaging a pinion loosely mounted
on the shaft carrying said disk which pinion carries a pawl engaging a ratchet
secured on said shaft and means for moving the first part of the gage-block
consisting of two uprights rising from the frame which lie in the path of and
engage the operating lever therefor at both ends of the movement of said
carriage.
5. In a shingle sawing machine, the combination with a saw, of a carriage
having a slot therein, a shingle gage mounted on said carriage and consisting of
two sections a lever having an eccentric head attached to the lower section, a
link attached to the upper section, a notched disk adjacent to said shingle gage, a
link secured to said disk and to the shingle gage, a toothed lever adapted to engage
the said disk, a pinion and ratchet and pawl mechanism on the same shaft with the
disk, a toothed bar adapted to be engaged by the said pinion, and having a movable
finger in connection therewith adapted to bear upon the lever engaging the
disk, and posts on the frame adapted to be engaged by the first mentioned lever,
substantially as and for the purposes specified.
Dated this 13th day of June 1895.
BOULT & WADE,
Agents for the Applicants.