Improved Appliance for Setting the Teeth of Saws.
Year: 1894

page_text: Date of Application, 27th Apr., 1894
Complete Specification Left, 25th Jan., 1895-Accepted. 9th Mar., 1895
Improved Appliance for Setting the Teeth of Saws.
We, CHARLES EDWARD BATCOCK 3 Watcombe Terrace, High Street, Ponders
End, Engineer, and JOSEPH WILLIAM BATCOCK 6 Eleanor Villas, Durant Road
Ponders End both in Middlesex do hereby declare the nature of this invention to
be as follows:-
-
This invention relates to an appliance for setting sawe, and the same is carried
out as follows.
Upon a base plate two jaws are attached one being fixed and the other movable.
The two jaws carry removable serrated pieces or plates which are caused to
approach one another as desired by means of a foot treadle or hand lever which
operates same through the medium of any well known means such as levers or the
like. The saw
is gripped between the jaws and the serrated plates operated
which " sets "the teeth of the S&W, the serrations bearing upon same. In order to
feed the saw the same is held or gripped in a movable vice sliding upon a bed or
guide & the movement is controlled by a stop piece so that at each movement of
the vice, a certain length of the saw blade is moved and a predetermined number
of teeth set. The movable vice may be operated or controlled by a spring or it
may be moved by the hand, as found most convenient, or other power. In Betting
a circular saw the serrated plate or edge is given a suitable curvature to suit the
curvature of the saw, which is mounted on a spindle attached to the fixed jaw or
base plate, the saw being moved round a desired distance according to the number
of teeth set. Instead of the movable vice aforesaid 1 may employ friction rollers
which grip the blade of the saw and by the revolution of which the saw may be
caused to travel the required distance, a divided plate being provided to regulate
the amount of or number of revolutions of the friction rollers aforesaid, so as to
indicate the number of teeth which are operated upon at each operation or
movement of the movable serrated plates or pieces aforesaid.
Dated this 27th day of Anril 1804
E. EATON,
Agent for Applicants.
proved app for Setting the UI Daws.
We, CHARLES EDWARD BATCOCK 3 Watcombe Terrace, High Street, Ponders
End, and JOSEPH WILLIAM BATCOCK 6 Eleanor Villas Durant Road Ponders
End, Engineers, both in Middlesex, 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 an appliance for setting saws, and the same is carried
out as follows:-
Upon a base plate two jaws are attached one being fixed and the other
movable. The two jaws carry removable serrated pieces or plates which are
caused to approach one another as desired by means of a foot treadle or hand
[Price 8d.]

page_text: lever which operates same through the medium of any well known means such as
levers or the like. The saw is gripped between the jaws, and the serrated plates
are operated which "sets" the teeth of the saw the serrations bearing upon same.
In order to feed the saw, the same is held or gripped in a movable vice sliding
upon a bed or guide and the movement is controlled by a stop piece so that at
each movement of the vice a certain length of the saw blade is moved and a
predetermined number of teeth set. The movable vice may be operated or
controlled by a spring, or it may be moved by the hand, as found most convenient,
or other power.
In setting a circular saw the serrated plate or edge is given a
suitable curvature to suit the curvature of the saw which is mounted upon a
bearing or such like attached to the fixed jaw or other suitable part, the saw
being moved round a desired number of teeth or distance according to the desired
number of teeth to be set. Instead of the movable vice aforesaid we may employ
friction rollers which grip the blade of the saw and by the revolution of which
the saw may be caused to travel the required distance a divided plate being
provided to regulate the amount of or number of revolutions of the friction rollers
aforesaid so as to indicate the number of teeth which are operated upon at each
operation or movement of the movable serrated plate or pieces aforesaid.
In order that my invention may be fully understood I now refer to the annexed
drawings in which :-
:-
Figure 1. is a plan view of my invention.
Figure 2. sectional side elevation of my invention.
Figure 3. cross section through line -y in Figure 1.
a & a¹ are the two jaws, a being the movable jaw pivoted at to the base
plate c. d, d, are the plates having the serrated edges or teeth e.
The plates a
are attached to the sockets f which slide in apertures in jaws a and a¹ and are
controlled by springs p. The levers ; are pivoted at m to the fixed, and movable
jaws a and a¹, and engage at o with the sockets f. The rod k attached to the bar l
engages on the ends of the levers j. The saw is gripped between the plates g by
rotating the handle which screws upon the spindle i. By causing the bar / to
descend the rod k operates the ends of the levers ; and so causes the serrated
plates d to approach one another and thus " set the saw teeth, the serrated
edges e engaging on same. In order to regulate the number of teeth set at each
operation the saw is gripped or held between the jaws of a vice q which slides upon
a guide between a stop piece or blocks which slides upon the guider and may
be fixed at a desired point by means of the set screw t. By this means the saw
blade is moved a desired distance each operation according to the distance or
amount of movement of the vice 9. said movement being regulated by the stop
pieces so that a certain number of teeth are set at each operation of the machine.
The rod may be operated by any suitable mechanism such as the foot or hand, or
by power if desired. The amount of "set" given to the teeth may be regulated
by adjusting the distance between the teeth e of the plates d by means of the set
screws n.
When setting a circular saw the plates d are of a curved form suitable to
the saw to be set which is mounted upon a bearing or spindle attached to a rod
which enters a socket u attached to the fixed jaw a'. The height of the bearing
which carries the circular saw may be adjusted on the rod by any well known
means such as a collar and set screw.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :
1. An appliance for setting the teeth of saws substantially as described and
illustrated herein.
2. In an appliance for setting the teeth of saws, the employment of two jaws,
one fixed and the other movable, said jaws carrying flat or curved movable
serrated or toothed plates attached to sockets and which are operated and caused

page_text: to approach one another through the medium of pivoted levers which are actuated
by a bar bearing upon the curved ends of said levers and which is operated by the
hand or foot or other convenient motive power; the serrated plates returning to
their initial position through the action of springs; the saw being gripped between
the jaws aforesaid and the movement or "feed" of same being regulated by means
of a sliding vice or grip which travels along a guide, the amount of travel being
regulated by an adjustable stop piece which is carried upon the guide. A socket
attached to the fixed jaw for carrying a rod and bearing for a circular saw,
substantially as described and illustrated herein.
Dated this 231rl dex of January 1895.
E. EATON,
Agent for Applicants.