A Mechanical Saw Setter for Setting Saws of Every Description.
Year: 1894

page_text: Date of Application, 9th Mar., 1894 -
Complete Specification Left, 8'h Dec., 1894-Accepted, 9th Mar., 1875
PROVISIONAL SPECIFICATION..
A Mechanical Saw Setter for Setting Saws of Every Description.
JOSEPH WILLIAM MOY of 58, Harwood Road, Walham Green, in the County
of London Builder and HENRY HARRIS of Brompton Square Kensington in the
County of London Builder do hereby declare the nature of this invention to be as
follows:-
--
A portable machine for setting saws of every description. It consists of a cast
iron base with an adjustable saw rest, the chief points in this invention being the
hammer & adjustable striking block which are so constructed that they will adjust
themselves to any size or description of saw without the possibility of breaking a
tooth or oversetting it.
The striking block consists of a square iron or gunmetal block about 2 inches
square by inch thick, adjustable on four sides to adapt itself to the teeth of any
description of saw. The parts struck by the hammer being small suitably shaped
blocks of steel let in & screwed onto the striking block which then slides into a
groove & is secured in its place by a thumb screw. The fixed hammer head is of
steel & is mounted on a short arm working on a pivot in the rear of the striking
block, with an adjustable stop to regulate the force of the blow. The hammer
head is shaped in four different sizes on one face, so that without any adjustment
of it itself, when the striking block is adjusted, the hammer automatically adapts
itself to it.
Dated this 9th day of March 1894.
JOSEPH WILLIAM MOY.
HENRY HARRIS.
COMPLETE SPECIFICATION.
A Mechanical Saw Setter for Setting Saws of Every Description.
We JOSEPH WILLIAM Mor of 58 Harwood Road Walham Green in the
County of London Builder and HENRY HARRIS of 3 Brompton Square
Kensington in the County of London Builder 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 is a portable apparatus or machine for accurately & almost automatically
setting the teeth of saws of every size or description whether hand, band or
circular. It consists of a small cast iron or other suitable metal base (A) with an
adjustable saw rest (B) the saw being held in its place by a couple of springs (C)
fixed on the plate mentioned in next sentence. In the front at right angles with to
the base is a plate (D) containing a slot or groove into which is inserted a square
striking block (E). This block is made of hardened steel or other suitable metal
& has a striking plate on each of the four sides adapted in shape & size to the
various descriptions of saw teeth or the striking block can be made in a circular (F)
or square (G) form (to turn or slide on a centre) with an eccentric striking plate;
to work either in a rotary or horizontal direction. These two latter forms of
[ Price 8d 1

page_text: striking block give a more sensitive adjustment for the deflection of the saw teeth.
In either form the striking block is held, in its place by a suitably positioned
thumb screw & lock nut (H). The saw teeth are struck by a hammer (i) working
-on a fixed centre (J) screwed on to or cast with the base. The hammer head (i)
is of hardened steel shaped in 4 steps or it can be made on a plain bevel, either
form working with any of the striking blocks. It will be noticed that the hammer
will automatically strike on only that part of the striking block which has been
placed in a position suitable to the saw to, be set. The striking block having been
adjusted the saw to be set is placed on the rest & drawn along with one hand while
the hammer is raised with the other each alternate tooth being struck by the fall
of the hammer. One side of the saw having been set, it is reversed & the same
action performed to the other side.
For circular saws we have a wood or metal attachment (1) fixed in a suitable
manner to the under part of the base (K) in the groove of which (m) is an adjustable
sliding pyramidical shaped circular pivot (n) to be raised or lowered so that the
saw to be set is on a level with the adjustable rest (B).
Having now particularly described & 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. In saw sets: Uniting the sensitive setting by hand with the absolutely true
setting by machinery no discretion being left to the judgement of the user as once
the proper part of the striking block is placed in position the saw can only be
struck with the requisite amount of force & breaking of or oversetting the teeth
cannot take place.
2. In saw sets: The principal & shapes of the striking blocks & hammers
whereby they automatically adjust each to the other.
3. In saw sets: The principle of the hammer working on a fixed centre.
Dated this 8th day of December 1894.
JOSEPH WILLIAM MOY.
HENRY HARRIS.