Improved Apparatus to be employed in the Setting of Saws.
Year: 1892

page_text: Date of Application, 19th Aug., 1892
Complete Specification Left, 17th May, 1893-Accepted, 8th July, 1893
PROVISIONAL SPECIFICATION.
Improved Apparatus to be employed in the Setting of Saws.
We, ABRAHAM JONES of 69 Gratton Street Burley Road Leeds, Engineer and
ELIZA SHEPHERD of 349 Lower Broughton Road Broughton Manchester, do
hereby declare the nature of our said invention to be as follows:-
I provide a plate of metal having a groove wide enough to slip on to the saw
which is to be set so that the plate may ride on the saw the plane in which the
plate stands being at right angles to the plane of the saw.
On the sides of the metallic plate are gauges one on each side these rest upon
the top of the teeth of the saw and are adjustable to suit saw teeth of different
sizes.
I provide two cavities in the metallic plate before mentioned, that is one on each
side of the saw these cavities are formed internally so as to act as fulcrums for two
short curved levers which face each other. The teeth of the saw which is to be set
lie between the lower internal faces of these short curved levers. The outer faces
of the levers work in the cavities of the plate. A tooth of the saw is set by the.
inner face of one of these short curved levers being pressed against it. The next
tooth is set by the opposite lever being pressed against it in the reverse direction,
the saw set having been moved the distance of one tooth in the interval between
setting two adjacent teeth. The alternate motion of the short levers is given to
them by one of the internal faces of a two pronged fork pressing against the upper
curved end of one of the short levers and then the other internal face pressing
against the upper curved end of the other short lever. The fork itself is also a
lever of the first order, centred on a fulcrum at the upper part of the plate. The
lower end of this lever is the forked end and the upper end forms a handle which is
grasped by the fingers of the operator, the points of resistance being formed by two
prolongations upwards from the plate of metal forming the body or frame of the
saw set.
The forked end of the long lever and the short curved levers are covered by a
thin plate to keep them in their places.
Dated 19th August 1892.
THOS. KENDRICK,
Agent.
COMPLETE SPECIFICATION.
Improved Apparatus to be employed in the Setting of Saws.
We, ABRAHAM JONES, of 69 Gratton Street, Burley Road, Leeds, Engineer,
and ELIZA SHEPHERD Spinster of 349 Lower Broughton Road, Broughton,
Manchester, of no occupation, do hereby declare the nature of our said invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
We provide a plate of metal having a groove wide enough to slip on to the saw
which is to be set, so that the plate may ride on the saw, the plane in which the
plate stands being at right angles to the plane of the saw.
On the sides of the metallic plate are gauges one on each side, these rest upon
the top of the teeth of the saw, and are adjustable to suit teeth of different sizes.
We provide two cavities in the metallic plate before mentioned, that is one on
each side of the saw, these cavities are formed internally so as to act as fulcrums
[Daim Q17

page_text: for two short curved levers which face each other. The teeth of the saw which is
to be set lie between the lower internal faces of. these short curved levers. The
outer faces of the levers work in the cavities of the plate. A tooth of the saw set
by the inner face of one of these short curved levers being pressed against it. The
next tooth is set by the opposite lever being pressed against it in the reverse
direction, the saw set having been moved the distance of one tooth in the interval
between setting two adjacent teeth. The alternate motion of the short levers is
given to thein by one of the internal faces of a two pronged fork pressing against
the upper curved end of one of the short levers, and then the other internal face
pressing against the upper curved end of the other short lever. The fork itself is
also a lever of the first order, centred on a fulcrum at the upper part of the
plate.
The lower end of this lever is the forked end, and the upper end forms a handle,
which is grasped by the fingers of the operator, the point of resistance being formed
by two prolongations upwards from the plate of metal forming the body or frame of
the saw set.
The forked end of the long lever and the short curved levers are covered by a
thin plate to keep them in their places.
And in order that this our said invention may be more clearly understood, we
will now proceed to describe the same reference being had to the sheet of drawings,
to the various figures and letters marked thereon that is to say :-
.
Fig. 1 is a view in elevation of the one side of our invention "Improved apparatus
to be employed in the setting of saws.'
"
Fig. 2 is a view in elevation of the other side, with one part as Fig. 3, removed
shewing the arrangement of parts for effecting the setting of saws.
Fig. 4 is a side view elevation of Fig. 2.
The same letters of reference indicate corresponding parts in each of the figures.
a is a metallic plate and frame, provided with the groove b, for receiving the
blade of the saw the teeth of which is to be set, b, can be accommodated to the
thickness of any saw by the screw b¹. When the saw is placed in b, it stands in a
plane of a right angle to a; the side of a is provided with the gauge c, which rests
upon or against the teeth of saw and is adjustable to suit saw teeth of varying sizes
by means of the screws d, e, it can be arranged from tooth to tooth, the setting
can also be adjusted or regulated by means of the screws ff. In the place of two
cavities one on each side. We may use only one cavity and in one side shewn at g,
and this receives the curved lever h, instead of using two levers as previously
specified we employ the two curves to the one lever as h. The saw in its proper
position for setting would be between the internal faces of , at the point i. The
outer faces of h, move or work in the cavity g, j, is the forked or two pronged lever,
the inner face of which engages with the outer face of the curved lever h, said lever
being held in position and working also in the cavity g of a. j is a lever of the
first order centred at the fulcrum k, and 1, is upper part or handle for operating the
same.
The mode of giving effect to this apparatus, and to carry out its purpose is as
follows: When the blade of the saw is arranged in 6' with its teeth at i of the
curved lever, and motion given to j, by 1; one tooth is set by the pressure of one
of the inner faces of h, against it, the next tooth is set by the opposite inner face
of h, being also pressed against it when the direction is reversed in the interval the
apparatus is moved ready for the next operation, and so on until completed.
We may employ the screws ff for adjustment which would be effected by
engaging with ½, for either a fine or coarse tooth when moved in the proper
direction.
The above being our said invention we wish it to be observed in conclusion that
we do not limit ourselves to the precise details or arrangement of parts as shewn on
the accompanying sheet of drawings, as we may alter or modify the same without
departing essentially from the principle of our said invention.

page_text: 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 :-
"
1st. In "apparatus to be employed in the setting of saws." The construction of
a metallic plate a, provided with groove b, and gauge, adjusted by d, e, the curved
lever, with internal faces, the forked lever j, engaging with the outer face of h,
and centred at the fulcrum k, with handle 1, and the screws f, f, substantially as
herein before set forth and described.
2nd. The combination and arrangement of parts, substantially as herein before
described in the foregoing Specification, and shewn on the accompanying sheet of
drawings.
1
THOS. KENDRICK,
Agent.