AN IMPROVED SAW-SHARPENING AND SAW-SETTING APPARATUS
Year: 1887

page_text: Date of Application, 4th Feb., 1887
Complete Left, 28th Oct., 1887
Complete Accepted, 20th Jan., 1888
I, JAMES GRIFFIN of Ferry-gloss Borrisokane in the County of Tipperary, Ireland,
Carpenter and Joiner do hereby declare the nature of my invention for AN IMPROVED
SAW-SHARPENING AND SAW-SETTING APPARATUS to be as follows:-
The object of my invention is to provide a guide to be used in saw-sharpening and
saw-setting. I make my improved guide on a wooden frame and in two parts the side
guide being adjusted on the frame by means of set screws which in turn are governed
or controlled by a spiral spring. On the guide which is affixed to the frame I fix two
adjustable rollers at intervals on an incline such as to give the desired pitch to the saw
teeth when sharpening. For sharpening hand-saws, jack-saws or tenon saws I fix the
said saws between the guide and frame or in a slit in the frame made to receive them.
The guide with its rollers being set so as to give the requisite incline or pitch to the
teeth of the saw I file each alternate tooth oeginning at the heel of the saw. At the
end of the operation of filing the teeth 1 reverse the saw proceeding as before
beginning at the heel. By this means every tooth has its own proper pitch bevel or
incline. For saw sharpening I prefer to use the ordinary hand-saw file; and for
setting, (that is to say bending each alternate tooth in such direction that the kerf of
the saw shall be of the required width) I prefer to use the file cut on one side of its
surface only.
Dated this Fourth day of February 1887

page_text: An Improved Saw-snarpening and Saw-setting Apparatus.
I, JAMES GRIFFIN of Ferrygloss Borrisokane in the county of Tipperary Ireland
Carpenter and Joiner do hereby declare the nature of my invention for AN IMPROVED
SAW-SHARPENING AND SAW SETTING APPARATUS, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement
The object of my invention is to provide a guide to be used in saw sharpening, saw
setting and saw ranging. I make my improved guide on a wooden frame A' and in
two parts;
the side guide A² being adjusted on the frame by set screws. These set
screws B are enclosed in a spiral spring the purpose of the said spring being to keep
the sides of the guide apart On the guide which is affixed to the frame I fix two
adjustable rollers C. C. at intervals on an incline (or bevil) such as to give the desired
pitch to the saw teeth when sharpening For sharpening hand saws jack saws or
tenon saws, my apparatus is used as follows:-
:-
I fix the saws between the sides of the guide, or between the guide and frame, or in
a slit in the frame made to receive them. The guide with its rollers being set so as to
give the requisite incline or pitch to the teeth of the saw, I proceed to file each alternate
tooth beginning at the heel of the saw. By this means every tooth has its own proper
pitch, bevil, or incline For saw sharpening I prefer to use the ordinary hand-saw
file for setting, a notched slide, set or gauge attached to the apparatus; and for
ranging (an operation of passing a file along the edge of the teeth to make them even)
I affix or cross cut; a small file at the back of the notched slide, set, or gauge
This file is intended for the purpose of running along the edge of the teeth before
sharpening In the frame I also fix one, two, or three wooden rollers to facilitate the
movement of the guides along the saw when sharpening.
In order that my invention may be better understood I append drawings in
which
Fig. 1 shews the guide with rollers attached the guide being lettered A² A².
Fig. 1 the frame carrying the aforesaid guide the frame being lettered A' A'.
Fig. 1 shews an end view of the frame and guide. The frame and guide are held
together by screws B B encased in a spiral spring b. b. which spring allows of the
adjustment of the apparatus to different width of saws. C. C. are the guide rollers.
D.D. the saw set affixed to the frame with the file E for ranging cross cut on the
back thereof F. F. are wooden rollers which facilitate the movement of the apparatus
along the saw Similar letters refer to similar parts in each figure Figs. 2ª 2 & 2°.
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. An apparatus for saw-sharpening setting and ranging constructed as described
and illustrated substantially and as set forth.
DLL woth love of October 1987