Improvements in Apparatus for Setting and Jointing Saws.
Year: 1896

page_text: Date of Application, 17th June, 1896
Complete Specification Left, 17th Mar., 1897-Accepted, 22nd May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Setting and Jointing Saws.
I, EDWARD THOMAS HUGHES, of 38 Chancery Lane, in the County of London,
Consulting Engineer, do hereby declare the nature of this invention (a com-
munication to me by Harry U. Kistner, of Selin's Grove, in the County of
Snyder, State of Pennsylvania, U.S. America, Commercial Salesman) to be as
follows:-
My invention consists of a novel construction of saw-set, by means of which
several teeth of a saw-blade can be mechanically and accurately set at one time,
provision being made for gripping or holding the saw firmly during the act of
setting, and for operating the setting and gripping device simultaneously.
It further consists in making certain portions of the device adjustable, whereby
different-sized teeth can be readily set.
According to my invention I provide a body, portion which is provided with a
slotted portion intermediate of its ends, within which is pivoted a lever or handle
which has a portion projecting up above the pivoted point.
An arm is pivoted to the projecting portion of said lever, and which is provided
with a beveled end or punch which is adapted to set a tooth of the saw, the said
arm being always caused to move in substantially the same relative path by means
of a guide.
A second arm or lever is pivoted to the first lever below the pivot, the other end.
of said second lever being attached to an upright stud which is itself secured to a
second pin or punch which has a beveled extremity adapted to set one tooth of
the saw.
A lever or handle is pivoted to a suitable ear attached to the body, said lever
having pivoted thereto the end of a link, the other end of which latter is pivoted to
a lever which is fulcrumed to the body, the other end of said lever being pivoted
to arms which slide in suitable ways or slots in a lug, the extremity of said arms
being attached to a plate or block, which is adapted to be moved into contact with
the face of the body, to a suitable portion of which is attached a movable jaw, the
same sliding in suitable ways upon said lug and being held in position by a
thumbscrew or similar device, it being evident that if desired the movable
jaw may be dispensed with and the face of the body lengthened to take its
place.
A stationary jaw depends from said body portion, the latter having a slot
therein, in which a file is adapted to be reciprocated.
Springs are attached to suitable portions of said body in such a way that
their normal tendency is to keep the levers or handles in the desired open
positions.
The device can be readily converted into a saw-jointer by changing the
adjustable jaw from one position to another position, the saw-blade being held
between the adjustable jaw and the stationary jaw while a suitable file can be
readily manipulated in the slot adjacent said jaws, the device being thus capable
of being readily employed as a saw set, or jointer, with equal readiness.
A thumb or set-screw may be placed near the end of the first lever, and is
adapted to abut against the lower side of the body portion and limit the movement

page_text: of said lever, whereby the device can be adjusted to give the teeth the required
level or sct.
Dated this 17th day of June 1896.
HUGHES, SON & Co.,
38, Chancery Lane, W.C., Agents.
Improvements in Apparatus for Setting and Jointing Saws.
I EDWARD THOMAS HUGHES, of 38, Chancery Lane, in the County of London,
Consulting Engineer, do hereby declare the nature of this invention, (a com-
munication to me by Harry U. Kistner, of Selin's Grove, in the County of
Snyder, State of Pennsylvania, U.S. America, Commercial Salesman,) and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
My invention consists of a novel construction of saw-set, by means of which
several teeth of a saw-blade can be mechanically and accurately set at one time,
provision being made for gripping or holding the saw firmly during the act of
setting, and for operating the setting and gripping device simultaneously.
It further consists in making certain portions of the device adjustable, whereby
different-sized teeth can be readily set.
It further consists in providing means for readily converting the saw-set into a
saw-" jointer" by reversing or adjusting certain parts of the device.
It further consists of novel details of construction, all as will be hereinafter set
'forth.
Fig. 1 represents a side elevation of a saw-set embodying my invention, showing
the parts in readiness to be applied to a saw. Fig. 2 represents a vertical
longitudinal sectional view of the same, showing the position the parts assume in
the act of setting the teeth.
Fig. 3 represents an end view of Fig. 1.
Fig. 4 represents a detached detail view shewing the position the pins or studs
assume in the act of setting the teeth of a saw.
Fig. 5 represents a detached portion of the saw-set, showing the jaws reversed
for the purpose of utilizing the set as a saw-jointer.
Similar letters of reference indicate corresponding parts in the several figures.
Referring to the drawings, A designates a saw-set, the same consisting of a
body portion B, which is provided with a slotted portion C intermediate of its
ends, within which is pivoted at the point D the lever or handle E which has a
portion F projecting up above the pivoted point.
G designates an arm which is pivoted at K to the portion F of said lever E, and
which is provided with a beveled end or punch H, which is adapted to set a tooth
of the saw, the said arm G being always caused to move in substantially the same
relative path by means of the guide G².
J. designates a second arm or lever, which is pivoted to the lever E below the
pivot D at the point L, the other end of said lever J being attached at M to the
upright stud M which is itself secured to the pin or punch N, which has a
beveled extremity P, which is adapted to set one tooth of the saw, the relative
positions of said pins or punches N and H with respect to the blade A2 being
understood from Fig. 4.
Q designates a lever or handle which is pivoted at the point R to a suitable car
attached to the body B, said lever having pivoted, thereto at the point S the end
of a link T, the other end of which latter is pivoted at U to the lever V, which is
fulcrumed at W to the body B, the other end of said lever being pivoted to the arms X,

page_text: which slide in suitable ways or slots in the lug Y, the extremity of said arms X
being attached to a plate or block, Z, which is adapted to be moved into contact
with the face B₁ of the body B, to a suitable portion of which is attached the
movable jaw A¹, the same sliding in suitable ways upon said lug and being
held in position by a thumb-screw C¹ or similar device, it being evident that
if desired the jaw A may be dispensed with and the face B' lengthened to take
its place.
D' designates a stationary jaw which depends from said body portion B, the
latter having a slot E' therein, in which a file is adapted to be reciprocated.
F and G³ designate springs which are attached to suitable portions of said body B
in such a way that their normal tendency is to keep the levers or handles Q and E
in the positions seen in Fig. 1.
The operation is as follows:-
When it is desired to set a saw the blade A2 of the same is placed against the
face B¹ and the movable jaw A', as indicated in Figs. 1 and 2. The downward
movement of the handle Q into the position seen in Fig. 2 will, by reason of the
intermediate connections, cause the plate Z to move into the position seen in Fig. 2
into contact with the blade A2, and simultaneously the movement of the lever or
handle E toward the body B, into the position seen also in Fig. 2, will cause, by
reason of the connections G and J the punches N and H to move simultaneously
toward each other, each having the same extent of movement, since their move-
ments are governed by the stroke of the same lever E, said punches N and H
assuming the position seen in Fig. 4 with respect to each other and to the
saw-teeth, it being therefore apparent that the teeth of the saw-blade will be
simultaneously and accurately set to the required degree by a single movement of
the lever E, the plate Z firmly gripping and holding the saw-blade during the
operation of setting.
The device can be readily converted into a saw-"jointer" or apparatus for
equalizing the length of the teeth by changing the adjustable jaw A¹ from the
position seen in Figs. 1 and 2 to the position seen in Fig. 5, the saw-blade A² being
held between the jaws A' and D', while a suitable file can be readily manipulated
in the slot El adjacent said jaws, that is to say, passed lengthwise over the saw-
teeth to equalize their length, the device being thus capable of being readily
employed as a saw set or "jointer" with equal readiness.
A thumb or set screw B2 may be placed near the end of the lever E, and is
adapted to abut against the lower side of the body portion B and limit the
movement of said lever E, whereby the device can be adjusted to give the teeth
the required level or set.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a saw-set, a suitable body portion, levers pivotally mounted thereon,
punches suitably guided, connections from above and below the fulcrum of one
of said levers to said punches, a jaw against which a saw-blade is adapted to be
placed, a plate for holding said blade in position and connections from said plate to
the other of said levers, substantially as described.
2. In a saw-set, a body portion, having a face against which a saw-blade is
adapted to be held, levers pivotally mounted thereon, punches suitably guided and
supported, connections from one of said levers to said punches, whereby the latter
are caused to move in opposite directions, a plate for holding a saw-blade in position
against said face of said body portion, and connections from said plate to the other
of said levers, substantially as described.
3. In a saw-set, the body portion B, levers Q and E pivoted thereto, the arms G
and J having the beveled ends P and H attached thereto, the plate Z and means
for moving the same toward or away from the body B, in combination with the
jaw A substantially as described.

page_text: 4. In a saw-set, a body portion, having the slot E' therein and a stationary jaw,
adjacent thereto, in combination with a reversible jaw, and means for attaching the
same to the body of said set, substantially as described.
5. In a saw-set, a body portion, having the slot E' therein, and a stationary jaw
adjacent thereto, in combination with a reversible jaw, which latter is adapted to
be set either in alignment with a face of said body portion or turned into
juxtaposition with said stationary jaw, substantially as described.
6. In a saw-set, the body portion B, the levers Q and E mounted thereon,
springs for holding said levers normally in position, punches suitably guided, and
supported, connections from one of said levers to said punches, whereby the
latter are caused to move in opposite directions, a plate Z for holding a saw-
blade in position, a lever V pivotally mounted connections from said plate to
said lever, and a link between the latter and said lever Q, substantially as
described.
Dated this 17th day of March 1897
HUGHES, SON & Co.,
38, Chancery Lane, London, W.C., Agents for the Applicant.