Improvements in or connected with the Machinery or Apparatus for Setting the Teeth of Saws.
Year: 1893

page_text: Date of Application, 29th June, 1893
Complete Specification Left, 1st Jan., 1894-Accepted, 3rd Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Machinery or Apparatus
for Setting the Teeth of Saws.
I ROBERT ELLIOTT of 30 Delaval Road Whitley in the County of
Northumberland Engineer do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to facilitate the setting the teeth of a saw.
According to my invention the teeth are pressed between suitably shaped pieces
of metal which I shall call dies.
Preferably I make these dies so as to set two or more teeth at the same time one
tooth being inclined to the right side of the blade of the saw and another inclined
to the left side and so on.
And in order that my invention may be fully understood I shall now proceed
more particularly to describe the same and for that purpose shall refer to the several
figures on the annexed sheet of drawings the same letters of reference indicating
corresponding parts in all the figures.
Figures 1 and 2 shew in plan and elevation respectively and Figure 3 is the end
view of a sawset constructed according to my invention the parts A and B work
upon the axle C suitably shaped dies can be placed at any convenient distance
around the axle C, upon which they work, the teeth of the saw are inserted between
the dies a. a¹ and b. 61 oue tooth being between a and b and another tooth being
between a and b. When the dies press the teeth between them they assume the
requisite angles with the blade of the saw as hereinbefore described; teeth of a
different size can be set by the dies a² a³ ³ and b³. And again teeth of another size
can be set by the dies at a and b, these dies are worked in the same manner as
the dies a. a b. and band herein before described. D and D' are adjustable stops.
I can facilitate the working of this apparatus by inserting a spring between the
parts A and B. Adjustable guides can be fastened to one or more of the dies so as to
regulate the depth of the teeth inserted between the dies and steady the apparatus
when at work.
Figures 4. and 5. shew in plan and elevation respectively and Figure 6, is the
end view of the part A and the dies a. a' a' as a and a and D is the adjustable
stop.
Figure 7 is the plan and Figure 8 is the end view of a sawset which may be
constructed according to my invention, upon the axle C, the parts A. and B. work,
having several slots cut out of them.
a. a' and a² are cut of A, and b. 61 and 62 are cut out of B.
The teeth of the saw are put into suitable slots and the parts A. and B. are
turned in opposite directions.
D. and D are adjustable stops and F. is a spring.
The guides E. E' E' E' E and E' are adjustable, the number of guide plates
can be varied. Sawsets can be made without any if required.
Figure 9 is the plan and Figure 10 is the end view of the part A.
a. a¹ and a
are the slots, D is the adjustable stop, and E E' and E' are the guide plates.
Figure 11 shews the plan of a sawset of the same type as shewn in Figures 7
and 8 the part A is on one side of the axle and the part B is on the other side.
a. and b are the slots.
Sawsets of this type can have washers or other suitable distance pieces inserted
between them when required.
Figures 12 and 13 are the plan and elevation respectively of the dies a and

page_text: which can be made to press the teeth of a saw by any suitable mechanism and the
Figures 14 and 15 shew in plan and elevation respectively the dies a and b when
they are in the positions they occupy when the teeth of the saw are inserted in
some alternative forms of sawsets the die a may be fixed and the die 6 may press
the teeth of the saw against it.
Figure 16 and 17 shew in plan and elevation respectively a common sawset G
with an adjustable guide plate E fastened to it, guide can be fastened to any
suitable sawsets.
The details constituting the ways and means in which my invention may be per-
formed such as the number of dies used or the mechanism used to work these dies
can be varied without departing from the nature of my invention as hereinbefore
described, for example adjustable handles can be fastened to the parts to which the
dies are fixed and these handles can be retained in any desired positions by buttons
catches, springs or the like.
Dated this 27th day of June 1893
ROBERT ELLIOTT.
COMPLETE SPECIFICATION.
Improvements in or connected with the Machinery or Apparatus
for Setting the Teeth of Saws.
I ROBERT ELLIOTT of 30 Delaval Road Whitley in the County of
Northumberland Engineer do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
The object of my invention is to facilitate the setting the teeth of a saw.
According to my invention the teeth are pressed between suitably shaped pieces
of metal which I shall call dies. Preferably I make these dies so as to set two
or more teeth at the same time one tooth being inclined to the right side of the
blade of the saw and another tooth inclined to the left side and so on.
And in order that my invention may be fully understood I shall now proceed
more particularly to describe the same and for that purpose shall refer to the
several figures on the annexed sheet of drawings the same letters of reference
indicating corresponding parts in all the figures.
Figures 1 and 2 shew in plan and elevation respectively and Figure 3 is the end
view of a sawset constructed according to my invention, the parts A and B. work
side by side upon the common centre C, having the dies a, a, a, b, b and *,
respectively formed on them projecting from these dies are other dies
marked a, a, a, b, 63 and 65 respectively. The die a' projects from a, and in
front of b, and the die b¹ extends from b and in front of a. Also the dies a³, a³
6 and 6, respectively project in a similar manner in front of the dies 2, 4, a³ and a*,
respectively. D and D are adjustable stops. E, is a spring to facilitate the
working of the apparatus.
Figures 4 and 5 shew the elevation and the end view respectively of the part A
with the dies a, a³, and a respectively and the projecting dies a', a³, and a³
respectively.
Figure shews the elevation of a sawset which may be constructed according
to my invention the parts A and B, working on the common centre C, with their
respective dies a, a', a², a³, b, b1, 62 and 63. 61, and ³ are shewn in dotted lines.
Figures 7 and 8 shew the elevation and the end view respectively a sawset
constructed in the same manner as the sawset shewn in the Figures 1. 2. and 3
and hereinbefore described. Adjustable guide plates c, c', c², c³, c¹ and care
fastened to the parts A and B, respectively the guide plates c¹ and being
fastened to the part A and the guide plates c, c³, and c¹ being fastened to the
part B.

page_text: Figures 9 and 10 shew respectively the elevation and the end view of another
form of sawset which may be constructed according to my invention the parts A
and B work side by side upon the common centre C, the slots a, a', and a³,
respectively being cut out of the part A, and the slots b, b', and ', respectively
being cut out of the part B. c', c, and c,frespectively are adjustable guide plates
which are fastened to the part A, and c, c and c, respectively are adjustable
guide plates that are fastened to the part B. D and D' are stops.
Figures 11 and 12 are the elevation and the end view of the part A shewn in
Figures 9 and 10 and herein before described. a, a' and a respectively are the
slots and cand c, respectively are the guide plates.
Figure 13 shews the elevation of another form of sawset which may be con-
structed according to my invention the parts A and B, work upon the common
centre C, is a slot which is cut out of the part B, the part A. has a slot cut out
of it which is not shewn.
Figures 14 and 15 shew in plan and elevation respectively the dies a, a¹ b, and b¹
which may be worked by any suitable machinery for instance one pair of dies a,
and a may be fixed and the other pair 6 and b may be made to press the teeth
of the saw against them by a blow from a hammer or any other suitable instru-
ment again the movable dies may be made to press the teeth of the saw against the
fixed dies by a lever.
Figures 16 and 17 shew the elevation and the plan respectively of the dies a, a¹
b and b (also shewn in the Figures 14 and 15) when the dies a and a¹ are drawn
apart from the dies b and b¹.
The details constituting the ways and means in which my invention may be
performed such as the number of dies used or the mechanism used to work these
dies can be varied without departing from the nature of my invention as herein-
before described.
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. The setting the teeth of a saw by pressing the teeth between suitable dies,
one tooth of the saw being inclined to the right side and another tooth being
inclined to the left side of the blade of the saw substantially as hereinbefore
described.
2. The apparatus for setting the teeth of a saw substantially as hereinbefore
described and illustrated in the Figures 1, 2, 3, 4 and 5 of the accompanying
drawings.
3. The apparatus for setting the teeth of a saw substantially as herein before
described and illustrated in the Figure 6 of the accompanying drawings.
4. The apparatus for setting the teeth of a saw substantially as hereinbefore
described and illustrated in the Figures 7 and 8 of the accompanying drawings.
5. The apparatus for setting the teeth of a saw substantially as hereinbefore
described and illustrated in the Figures 9, 10, 11 and 12 of the accompanying
drawings.
6. The apparatus for setting the teeth of a saw substantially as hereinbefore
described and illustrated in the Figure 13 of the accompanying drawings.
7. The several parts of the apparatus for setting the teeth of a eaw substantially
as hereinbefore described.
ROBERT ELLIOTT.