Improvements in Machines for Sharpening and Setting Saws.
Year: 1898

page_text: Improvements in Machines for Sharpening and Setting Saws.
I, ANTONE KEPPELER, of No. 719, South Arizona Street, Butte City, Montana
U.S.A., do hereby declare the nature of this invention to be as follows:-
The invention relates to improvements in machines for sharpening and setting
saws, and consists of certain novel constructions and arrangements of parts which
will be hereinafter set forth.
My improved device is made up of a base, a supporting frame thereon, a
setting lever, a saw-supporting table, a file-operating lever, and a file-holder.
The frame comprises two vertically-spaced, parallel plates, and curved table-
supporting plates suitably bolted to the forward end of the same. The said
parallel plates form a support for the main power-shaft, upon the outer end of
which is mounted a balance-wheel carrying an operating handle. Said shaft
further carries two cams secured side by side thereon which are adapted to engage
adjustable blocks mounted in the rear ends of the respective setting levers and
adapted to be adjusted in their relation to said levers by set-bolts that pass
through said levers and engage said blocks. A coil-spring has its respective
opposite ends connected by screw-bolts mounted in the respective ends of the
setting-levers so as to draw the ends of said levers together. Said levers are
pivoted upon an auxiliary shaft mounted upon the supporting-frame and are
held normally in contact with each other. Setting-dies are mounted in the
respective forward ends of the setting-levers by means of screw-bolts which pass
through said levers and engage said dies. These dies are so arranged that while
one of the same strikes a tooth up, the other forces the adjoining tooth down,
thus equalizing the shock to the blade and prevents the edge of said blade from
being bent either up or down by a constant pounding in one direction only.
This peculiar arrangement of dies and the relative arrangement of the cams
referred to, causes the forward ends of the setting-levers to be brought together
once during each revolution of the main power-shaft, so that said dies are
simultaneously brought into contact with the saw teeth.
A transverse shaft is journaled in the supporting-frame and is provided
between the respective plates in said frame with a gear wheel, which latter meshes
with a similar gear wheel fast on the main power-shaft. Said transverse shaft
is provided at its outer end with a crank portion which projects through an
elongated slot formed in the rearwardly-projecting portion of the file-operating
lever. Said lever is journaled upon one of the plates of the supporting frame, and
has formed at its forward end an elongated slot through which passes a pin or
bolt. This pin or bolt engages a slide mounted in vertical guides secured to the
base, so that as the file-operating lever is oscillated by the movements of the
crank portion of the transverse shaft referred to, the said slide will be moved
up and down. Said slide carries an adjustable horizontal arm formed with a
slot through which passes a securing bolt whereby said arm may be moved in and
out at will. The other end of said arm is bifurcated and formed into a split

page_text: journaled portion in which is mounted the journal of the file-support. The file-
support is formed with a socket into which the lower end of the file is secured
by means of a bolt passing through the wall of said support. A spring is suitably
secured upon the adjustable horizontal arm referred to, and is provided at its
upper end with an aperture adapted to receive the upper end of the file. By this
means the file is pressed forward under spring tension and may yield backward
when necessary to relieve any excessive friction between it and the saw teeth.
The gear wheel on the main power-shaft is adapted to mesh with a gear wheel
mounted loosely upon the auxiliary shaft to which the setting-levers are pivoted,
which gear wheel in turn meshes with a gear wheel upon the shaft to which is
secured the feeding discs. The periphery of one of said discs is concentric with
said shaft, while the periphery of the other disc is arranged eccentric to
said shaft. By this means the periphery of the first disc remains in engagement
with one of the teeth of the saw at all times except when the periphery of the
other disc engages one of the saw teeth to force said saw backwardly and at the
same time feed it forward one tooth, the first disc acting as a stop or lock and
the second disc as a feeding disc. The feeding disc is formed with a beveled
periphery which is adapted to engage the teeth of the saw to move the latter
forward. Said saw is supported upon the supporting-table which latter is
mounted upon the supporting portion of the frame. Said table comprises a base
and a slide portion proper. The latter portion consists of two sections secured
together by headed bolts with coil-springs interposed, whereby the plates may be
separated against the tension of said springs. Said sections are provided with
flanges arranged near their edges so as to hold said plates apart for the accommo-
dation of the saw and other devices hereinafter described between them. Anti-
friction rollers are journaled between the respective sections of the table so as to
be engaged by the rim of the saw and thus hold said saw firmly in position, but
at the same time permit of its being slid longitudinally with a minimum amount
of friction. One of said sections is adapted to slide upon the top of the table
proper, and is provided with a pendent lug formed with a screw-threaded aperture
through which passes an adjusting-screw, a coil-spring being interposed between
said lug and a block mounted upon the frame through which the said screw-
threaded adjusting-bolt passes. The outer end of said bolt is provided with
an adjusting-wheel by means of which the tension of the coil-spring may be
adjusted to secure the desired tension.
From the foregoing description it will be observed that the table carrying
the saw is free to move rearwardly against spring tension to disengage the teeth
of the saw from the stop or lock disc, so that the feeding disc may feed the saw
forwardly one tooth. By my machine, the saw is simultaneously sharpened and
set and automatically fed forward between the sharpening and setting operations.
The rearward movement of the saw is necessary in order to disengage it both
from the locking disc and the triangular file with which it is engaged.
Dated this 15th day of October 1898.
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.
COMPLETE SPECIFICATION.
Improvements in Machines for Sharpening and Setting Saws.
I, ANTONE KEPPELER, Machinist, formerly of 719, South Arizona Street, and
now of No. 517, South Main Street, Butte, in the County of Silverbow, and
State of Montana, one of the United States of America, do hereby declare the

page_text: 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 improvements in machines for sharpening and setting
saws; and it consists of certain novel constructions, combinations, and arrange-
ments of parts, all of which will be hereinafter more particularly set forth and
claimed.
In the accompanying drawings, forming part of this specification,
Figure 1 represents a side elevation of the machine embodying my invention.
Figure 2 represents a top plan view of the same.
Figure 3 represents a side elevation taken on the side opposite from that shown
in Figure 1, and
Figure 4 represents a front elevation of my said improved machine.
Figure 5 is a top plan view of the table and the feeding mechanism, a portion
of the table being removed to better illustrate the construction of parts of the
invention.
Figure 6 is a detail in perspective of the 'saw-adjusting block carrying anti-
friction-rollers.
Figure 7 is an edge elevation of the feeding-disk and segment.
1 in the drawings represents the base of my improved saw sharpener and
setter; 2, the supporting frame mounted thereon; 3, 3, the setting-lever; 4, the
saw-supporting table; 5, the file-operating lever, and 6 the file-holder. Said
frame comprises two vertical-spaced parallel plates 7, 7, and curved table-sup-
The said
porting-plates 8, 8, suitably bolted to the forward ends of the same.
plates 7, 7, form a support for the main power-shaft 9, upon the outer end of
which is mounted a balance-wheel 10, carrying an operating-handle 11. Said
shaft further carries two cams 12 and 13, respectively, secured side by side thereon.
These cams are adapted to engage adjustable blocks 14, mounted in the rear ends
of the respective setting-levers 3, 3, and adapted to be adjusted in their relation
to said levers by set-bolts 15, that pass through said levers and engage said
blocks.
A coil-spring 16 has its respective opposite ends connected by screw-bolts 17,
mounted in the respective ends of the levers 3, 3, to as to normally draw the
ends of said levers together. Said levers 3, 3, are pivoted upon an auxiliary
shaft 18. mounted upon the frame 2, and are held normally together in contact
with each other.
Setting-dies 20, 20, are mounted in the respective forward ends of the levers 3, 3,
by means of screw-bolts 21, which pass through said levers and engage said dies.
These dies are so arranged that while one of the same strikes a tooth up the
other forces the adjoining tooth down, and thus equalizes the shock to the blade
and prevents the edge of said blade being bent either up or down by a constant
pounding in one direction only. This peculiar arrangement of dies and the
relative arrangement of the cams 12 and 13 cause the forward ends of the
levers 3, 3, to be brought together once upon each revolution of the main power-
shaft, so that said dies are simultaneously brought into contact with the saw-teeth.
A transverse shaft 22 is journaled in the frame 2 and is provided between
the respective plates of said frame with a gear-wheel 23, which latter
the main
on
Said
meshes with a gear-wheel 24, fast
power-shaft 9.
its outer end with at
shaft 22 is provided at
crank portion 25,
which projects through an elongated slot 26, formed in the rearwardly-projecting
portion of the lever 5. Said lever 5 is journaled, as at 26¹, upon one of the
plates of the frame 2, and has formed at its forward end an elongated slot 27,
through which passes a pin or bolt 28. This latter engages a slide 29, mounted
in vertical guides 30, secured to the base 1, so that as said lever 5 is oscillated
by the movements of the crank 25 said slide will be moved up and down. Said
slide 29 carries an adjustable horizontal arm 31, formed with a slot 32, through
which passes a securing-bolt 33, whereby said arm may be moved in and out at
will. The other end of said arm is bifurcated and formed into a split journaled

page_text: portion 34, in which is mounted the journal 35 of the file-support 36. This latter
is formed with a socket 37, into which the lower end of the file is secured by
means of a bolt 38, passing through the wall of said support. This socket 37
is three-cornered, also the stock of the file, so that the operator after one edge
of the file is dull can turn the file around to the next edge and the file will
stand in the same position as before. A spring 39 is suitably secured upon the
arm 31 and is provided at its upper end with an aperture 40, adapted to receive
the upper end of the file 41. By this means said file 41 is pressed forward under
spring tension and, may yield backward when necessary to relieve any excessive
friction between it and the saw-teeth. The said gear-wheel 24 is adapted to
mesh with a gear-wheel 42, mounted loosely upon the shaft 18, which in
turn meshes with a gear-wheel 43, mounted upon a shaft 44, to which is secured
the feeding-segment 46, having threads on its end which are diagonally disposed,
and also the guide or disk 45 with an offset. The circumference of said disk 45
has an offset which is disposed obliquely to the face of the disk, and this offset is
designed to engage with a tooth of the saw at each revolution of the said disk
for the purpose of advancing the saw the distance of one tooth. The oblique
threads on the segment 46 are provided to also engage with the teeth of the
saw to make the feeding sure in case the offset of the disk 45 happened to fail to
feed the saw by reason of a broken tooth coming opposite the offset. After the
saw has been advanced by the offset the periphery of the disk bears against the
edge of the tooth and steadies the same until the saw is ready to be fed forward
again, which will occur each time the disk makes a revolution. Said saw 47 is
supported upon the table 4, which latter is mounted upon the supporting por-
tion 8, 49, of the frame. The table is mounted to slide horizontally on the
support and has a depending portion 57, through which the threaded bolt 58
passes, whereby as the hand-wheel 61, which is keyed to the end of said bolt 58,
is turned in one direction or another the tension of the spring 59, interposed
between the depending portion 57 and the outer portion of the frame, may be
regulated and the table may be moved backward and forward to adjust it to the
width of saw being set and filed. Pivoted to the sliding table 4, on the edge
thereof, is the plate 75, which is adapted to swing back to allow the saw to be
placed under the free edge of the plate. In order to hold the plate down, the
thumb-screw 52 is provided, which has its lower end threaded and engages in a
threaded aperture in the table, and interposed between the plate and the head of
the said screw is a spring 53, and by raising or lowering the screw the tension of
the spring 53 is regulated. Mounted on the top of the table is a block 51, which
is apertured at 77, and said block carries on its inner edge a series of antifriction-
rollers 55, against which the rear edge of the saw being set and filed is designed
to bear. At the rear of said block and loosely held on the table-top is the wedge 78,
which is provided with a longitudinal aperture 76, through which the thumb-
screw 80 passes. This wedge is provided to adjust the block by forcing it toward
the rear edge of the saw, and when adjusted the thumb-screw 80 may be tightened
and the wedge held in a fixed position.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
-
1. In a saw-sharpening machine, the lever pivoted to the frame of the machine,
the shaft carrying a crank and wrist-pin, which latter travels in a slot in said
lever, the reciprocating cross-head to which the lever is pivoted and the file
carried by the cross-head, combined as set forth.
2. In a saw-sharpening machine, the lever pivoted to the frame of the machine,
the shaft, crank and wrist-pin, which latter travels in an elongated slot in said
lever, the vertically-reciprocating cross-head having a sliding pivotal connection
with one end of the said lever, combined with a horizontally adjustable file-
carrying bracket, as set forth.
:

page_text: 3. In a saw-sharpening machine, the combination with the vertically-reci-
procable cross-head, the lever having a sliding pivotal connection with the said
cross-head, the shaft carying the wrist-pin, the latter having a pivotal connection
with the opposite end of the said lever in an elongated slot, a horizontally-
adjustable bracket secured to the cross-head, and jaws on the bracket to receive
a file socket-piece, as set forth.
4. In a saw-sharpening machine, the combination with the cross-head and lever
having sliding pivotal connection therewith, and with an operating-crank to
which power is conveyed, of the bracket, horizontally adjustable on the cross-
head and having clamping-jaws, of the file-carrying socket-piece held therein,
and file carried by the socket-piece, as set forth.
5. In combination with the reciprocating cross-head and means as described
for operating same, the horizontally-adjustable bracket mounted on the said
cross-head, clamping-jaws on the bracket, file-carrying socket-piece held by the
jaws, the file fastened in the socket and the spring-arm carried by the bracket,
and connected to the upper end of the file, as set forth.
6. In a saw-sharpening machine, a concentric disk having a portion of its
periphery obliquely offset, a segment provided with a plurality of obliquely-
arranged thread-like ribs, corresponding in obliquity and position to the offset
portion of said disk, a shaft upon which said disk and segment are mounted, and
means for rotating said shaft, combined with a longitudinal guide and means for
adjusting the same to cause the thread of the disk to lie in and engage the
throat of a saw-tooth, to intermittently feed and hold stationary the saw-blade,
substantially as described.
7. In a table for a saw-filing machine, the horizontally-sliding saw-carrying
top and screw-threaded shaft, spring mounted thereon, and hand-wheel for
operating the shaft, combined with the spring-actuated plate pivoted to the
horizontally-movable portion of the table as shown and described.
8. In a table for saw sharpening and filing machines, the combination with
the horizontally-movable top and plate pivoted thereto, the block, with anti-
friction-wheels mounted therein, which block rests freely on the horizontally-
movable portion of the table, means for holding the block in a fixed position, and
a wedge for adjusting the said block, as set forth.
9. In combination with the horizontally-movable table-top, the plate pivoted
thereto, the loosely-mounted block with antifriction wheels mounted therein,
the threaded adjusting thumb-screw passing through a transversely-disposed
aperture in the said block, a spring interposed between the upper surface of the
said pivoted plate and the shouldered head of the adjusting-screw, and the
slotted wedge and tightening thumb-screw held in the slot therein as set forth.
Dated this 6th July 1899.
H. D. FITZPATRICK,
Agent, Glasgow.