Improvements in Saw-setting Devices.
Year: 1899

page_text: Improvements in Saw-setting Devices.
I, RICHARD VINCENT BENNETT, of 54, Bergen Street, in the City of Newark, County
of Essex and State of New Jersey, United States of America, Manufacturer, 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 saw setting devices and among its objects is to provide a
convenient and efficient device by means of which a saw inay be set by hand and
without any special shop equipment; also to provide a saw setting device having
means whereby the teeth of a saw may be set with certainty, accuracy, permanency
and uniformity.
The invention consists of the features and combination of features bereinafter
set forth.
In many of the saw setting tools heretofore in use the teeth of the saw are set by
gripping each tooth separately by means of the tool and bending the tooth over to
the required angle. Such tools are found objectionable because the teeth after once
being bent over will not permanently remain exactly as they are set, but many of
them on the contrary will straighten out and to various degrees, even in the same
saw. This is due to the resilience of the metal, especially at or near the base of
each tooth, which cannot be sufficiently overcome to impart to the tooth a permanent
and exact set or inclination by simply gripping the tooth and bending it over. This
resilience differs not only among saws of different sizes but also among saws of
identically the same size and even among teeth of the same saw. A sharp bow upon
the tooth is the only way in which it can be permanently set with exactness so as
to retain its required inclination. In this invention provision is made for setting
a tooth by means of a sharp blow against one side of the tooth. To effect this result
a guiding face is provided and against this guiding face is driven a punch which by
neans of the guiding face is directed against the side of the tooth so that a sharp
blow of a mallet or hammer on the upper end of the punch is transmitted by means
of the punch and the guiding face against one side of the tooth. Thus the tooth is
permanently set by means of a sharp blow.
This invention also provides means whereby the teeth may not only be set
permanently at the required angle, but it also provides means whereby all the teeth
of a saw may be set with uniformity whatever may be the difference in resiliency as
between different saws or as between different teeth of the same saw.
The highest
efficiency of a saw can only be attained when its teeth are uniformly set. In
carrying out this part of the invention an anvil is provided, which may be fixed on
the stock, and which is on the opposite side from the guiding face, with a space
formed between the anvil and that part of the stock having the guiding face into
which the tooth of a saw may he inserted, so that when the punch is driven against
the guiding face the punch will be guided against the side of the tooth and the tooth
will be driven over against the anvil. The anvil serves to determine and limit the
inclination and by means of it all the teeth of a saw can be uniformly set, and to
attain this desirable result no special care or skill is required; for example, the force

page_text: of the setting blow need not be carefully made to correspond with the stiffness of the
tooth. The anvil, moreover, is so arranged that it serves to assist the punch in
giving permanency to the inclination of the tooth set.
In the drawings forming part of this specification and embodying the best form of
the invention as a portable hand tool not known, and in which like letters of reference
designate corresponding parts,
Fig. 1 is an elevation of the device, looking at one side;
Fig. 2 is an elevation of the device, looking at the opposite side;
Fig. 3 is a sectional elevation of the device on the line A A, Fig. 1, the section
lines not cutting the punch, the device being shown in operating position on શ
saw.
Fig. 4 is a sectional elevation on the line B B of Fig. 3.
Referring now more specifically to the special construction as shown in the drawings,
a is the stock of the device, on which is provided the guiding face b. The guiding
face is preferably so located as to operate upon the lower end of the punch, and in
the best form the punch c is beveled on the side which comes in contact with the
guiding face. As thus constructed the device when in operation will be held so that
the guiding face b will stand on one side of and a little distance from and generally
facing the tooth to be set, and when a blow from a hammer or mallet is given to the
ipper end of the punch the punch will be driven alongside the tooth, and the
striking face f at the lower end of the punch will be guided sidewise by
the guiding face b, so as to strike the side of the tooth and thus set it.
In the best form of the device an anvil d is provided on the opposite side from and
preferably facing the guiding face and separated therefrom by a narrow space into
which the tooth of the saw may be inserted, as shown in Fig. 4, the lower edge of
the anvil coming opposite the tooth at the required distance from its point. When
now the punch c is driven down, the tooth will be accurately set and firmly against
the anvil d, the lower edge of the anvil serving to support the tooth against the blow
from the punch so as to give the tooth a well defined angle of inclination at the
proper place and so as to cause it to permanently retain with exactness the angle of
inclination required. The anvil d and striking face f of the punch are preferably
inclined as shown. For the purpose of assisting the workman to hold the device,
when in the form of a hand tool, in an upright position when in operation, resting
ineans are generally provided for the stock adapted to rest upon the toothed edge of
the saw and between the teeth, whereby the stock may be seated and held in its
required position. The resting means also serves to determine the position of the
device with respect to the height of the tooth, so that the tooth may be set as near
to or far from its base as may be required. The resting means are preferably
adjustable, so that the teeth of different saws may be set at various distances from
their bases, as may be required... The resting means may be embodied in various
forms, but in the present form there is provided two adjustable rests g and h, one
on each side of the punch; the rest is adjustable by means of the set screw i,
which passes through a slot k in the rest and into a fixed part of the stock. The
inner surface of the rest g is preferably serrated; also the surface of the stock contact-
ing therewith, as shown in Fig. 3. By means of the set screw the rest g may be
raised or lowered to suit the requirements and held securely in position. The rest h
is made in the form of a flat plate with four arms varying in length but of the same
width. It is held to the fixed part of the stock by means of the set screw L. The
spring m surrounds this screw and bears upon the underside of the rest hand the
body of the stock. Pins are fixed in the body of the stock and are arranged so as
to receive between them and hold firmly either of the four arms of the rest h. By
loosening the screw the rest h comes out beyond the ends of the pins n, so that it
may be turned around to the required position; then by tightening up the screw,
one of the arms of the rest his pushed in between the pins n and these pins firinly
hold the rest in this position. The rests y and h not only enable the workman to hold
the tool upright on the saw, but they serve to positively support the device at the
proper height, so as to bring the lower edge of the anvil d directly opposite the

page_text: tooth to be set and at the required distance from its base, so that the punch may
strike the tooth in exactly the proper place. Some of the advantages of the resting
means may be obtained by using only one of these two rests, but it is preferred to
use them both. In its best form, the stock is made in two pieces, as shown in the
drawings, held together by the collar. o, to which they are made fast by the rivets p p.
These pieces are prolonged below the guiding face b and anvil d, so as to provide two
legs and r. The leg is preferably provided with an adjustable side support for
the saw body to steady the saw body and enable it to resist the rebound arising when
the setting blow is delivered against a tooth. This support is made adjustable so that
different saws may occupy various positions with respect to the punch in order that
the teeth of different saws may be set at various angles of inclination. The set
screw 8 serves as a convenient form of this adjustable support. The saw is inserted
hetween these legs q and r, so that a tooth enters the space between the guiding
face b and anvil d. The set screw 8 is made to bear against the body of the saw,
and by adjusting it inward and outward the position of the saw may be varied with
respect to the striking face of the punch, and so the inclination to be given to the
tooth may be varied. By such means all the teeth of the saw may be set at the same
angle of inclination, but this angle may be varied to suit the requirements of each
t is a clamping screw adjustable in the leg r, and may be used to hold a saw
against the screw & u is a small spring by means of which the punch c is permanently
but loosely connected to the stock and which serves to hold the panch normally in its
upper position, as shown in Fig. 4. To reduce the width of the striking face f
of the punch, so that the striking face will not act upon more than one tooth
at a time, it is generally cut away, as shown at v, Fig. 3.
It will be readily
seen by those skilled in the art that the different features of the invention may be
embodied in various forms.
saw.
The device in the form shown in the drawings is adapted for hand use, and may be
operated without any special shop equipment. If desired the device or some of its
features may be embodied in different forms and may constitute part of a machine to
be used in setting saws. Again, all the parts of the device are shown as connected
with the stock. This is the most convenient arrangement when the device is to be
carried about, but it will readily be seen that such arrangement is not indispensable to
the invention. For example, some of the parts might be disconnected from the stock
and fixed on a work bench.
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 setting device, the combination of a guiding face adapted and designed
to be held on one side of a saw tooth to be set, and a punch arranged and designed to
be driven against said guiding face alongside of said tooth, whereby the punch is
guided sidewise so as to strike the side of said tooth to set the same.
2. In a saw setting device, the combination of a guiding face adapted and designed
to be held on one side of a saw tooth to be set, and a punch arranged and designed to
be driven against said guiding face alongside of said tooth, whereby the punch is
guided sidewise so as to strike the side of said tooth to set the same, and an adjustable
side support for the saw body.
3. In a saw setting device, the combination of a guiding face and an anvil arranged on
opposite sides of a space formed between then into which the tooth of a saw may be
inserted, a punch designed and adapted to be driven against said guiding face along-
side said tooth, whereby the punch is guided sidewise so as to strike the side of said
tooth to set the same against said anvil.
4. In a saw setting device, the combination of n guiding face and an anvil arranged
on opposite sides of a space formed between them into which the tooth of a saw inay
be inserted, a punch designed and adapted to be driven against said guiding face
alongside said tooth, whereby the punch is guided sidewise so as to strike the side of

page_text: said tooth to set the same against said anvil, and an adjustable side support for the
saw body.
5. In a saw setting device, the combination of a guiding face adapted and designed
to be held on one side of a saw tooth to be set, and a punch arranged and designed
to be driven against said guiding face alongside said tooth whereby the punch is
guided sidewise so as to strike the side of said tooth to set the same, and resting
ineans for said device adapted to rest upon the toothed edge of the saw whereby the
device may be held in the required position.
6. In a saw setting device, the combination of a guiding face adapted and designed
to be held on one side of a saw tooth to be set, and a punch arranged and designed
to be driven against said guiding face alongside said tooth whereby the punch is
guided sidewise so as to strike the side of said tooth to set the same, and resting
means for said device adapted to rest upon the toothed edge of the saw whereby the
device may be held in the required position, and an adjustable side support for the
saw body.
7. In a saw setting device, the combination of a guiding face and an anvil arranged
on opposite sides of a space formed between them into which the tooth of a saw may
be inserted, a punch designed and adapted to be driven against said guiding face
alongside said tooth whereby the punch is guided sidewise so as to strike the side of
said tooth to set the same against said anvil, and resting means for said device
adapted to rest upon the toothed edge of the saw whereby the device may be held in
the required position.
8. In a saw setting device, the combination of a guiding face and an anvil arranged
on opposite sides of a space formed between them into which the tooth of a saw may
be inserted, a punch designed and adapted to be driven against said guiding face
alongside said tooth whereby the punch is guided sidewise so as to strike the
side of said tooth to set the same against said anvil, and resting means for said
device adapted to rest upon the toothed edge of the saw whereby the device
may be held in the required position, and an adjustable side support for the saw
body.
9. In a saw setting device, the combination of a guiding face and an anvil
arranged on opposite sides of a space formed between them into which the tooth
of a saw may be inserted, a punch designed and adapted to be driven against
said guiding face alongside said tooth whereby the punch is guided sidewise so
as to strike the side of said tooth to set the same against said anvil, and
adjustable resting means for said device adapted to rest upon the toothed edge
of the saw whereby the device may be held in the required position.
10. In a saw setting device, the combination of a guiding face and an anvil
arranged on opposite sides of a space formed between them into which the tooth of a
saw may be inserted, a punch designed and adapted to be driven against said
guiding face alongside said tooth whereby the punch is guided sidewise so as to
strike the side of said tooth to set the same against said anvil, and adjustable resting
means for said device adapted to rest upon the toothed edge of the saw whereby the
device may be held in the required position, and an adjustable side support for the
saw body.
11. In a saw setting device, the combination of an inclined guiding face and an
inclined anvil arranged on opposite sides of a space formed between them into which
the tooth of a saw may be inserted, a punch having its working end beveled on
opposite sides designed and adapted to be driven against said guiding face alongside
said tooth whereby the punch is guided sidewise so as to strike the side of said tooth
to set the same against said anvil.
12. In a saw setting device, the combination of an inclined guiding face and an
inclined anvil arranged on opposite sides of a space formed between them into which
the tooth of a saw may be inserted, a punch having its working end beveled on
opposite sides designed and adapted to be driven. against said guiding face alongside
said tooth whereby the punch is guided sidewise so as to strike the side of said tooth

page_text: to set the same against said auvil, and an adjustable side support for the saw
body.
13. In a saw setting device, the combination of an inclined guiding face and an
inclined anvil arranged on opposite sides of a space formed between them into which
the tooth of a saw may be inserted, a punch having its working end beveled on
opposite sides designed and adapted to be driven against said guiding face alongside
said tooth whereby the punch is guided sidewise so as to strike the side of said tooth
to set the same against said anvil, and an adjustable side support for the saw body,
and adjustable resting means for said device adapted to rest upon the toothed edge
of the saw whereby the device may be held in the required position.
14. In a saw setting device, the combination of a stock having the inclined face b,
the inclined anvil d with a space between them into which the tooth of a saw may
be inserted, the leg 9 provided with an adjustable side support for the saw body,
the punch c beveled at its lower end, and adjustable resting means on said stock
adapted to rest on the toothed edge of the saw whereby the device may be held
in the required position.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.