Improvements in Apparatus for Sawing Metals.
Year: 1889

page_text: Date of Application, 14th Nov, 1889-Accepted, 14th Dec., 1889
COMPLETE SPECIFICATION.
Improvements in Apparatus for Sawing Metals.
I, CLAUDE CARTER, Manager at the Works of Messrs. Hetherington & Co., Pollard
Street, Ancoats, Manchester, in the County of Lancaster, Machine Tool Makers 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 and accompanying drawings :-
--
My said Invention relates to an improved apparatus for sawing metals and con-
sists of a simple and compact arrangement of parts composing a useful and effective
tool suitable for use in the fitting shop or for other purposes.
To render my invention clear I will refer to the accompanying sheet of drawings
which illustrate the apparatus.
Fig. 1 of the said drawings is a side elevation of the apparatus.
Fig. 2 is a front elevation of the same.
Fig. 3 is a plan view of the machine and Fig. 4 is a plan of the drip tray A the
upright supporting frame or standard a being shown in section.
Referring to the said Figs. a is the standard which supports the parts of the
apparatus. At the upper part of the standard a which is cored hollow is mounted
in bearings the saw spindle to the outer end of which the circular saw c is
secured. At about the central part of the length of the spindle band between
confining bosses in the interior of the standard a is keyed or fixed a worm
wheeld which can be introduced through an opening in the front of the standard a
and which gears with a worin e. The said worm is formed on the inner end of
the driving spindle which is carried in a bearing boss g cast on the standard.
The portion of the spindle f which revolves in the hoss g is of the same diameter
as the worm P so that the worm can be passed in through the bearing boss g
from the ontside. The spindle f carries a fast pulley and a loose pulley i and
a belt fork jis arranged above the pullies for shifting the belt and so starting
and stopping the machine. The fast pulley h and the saw c are both driven in
the direction of the respective arrows and to withstand the consequent inward pull
upon the spindle the said spindle is formed with a collar an antifriction
washer being placed between the collar k and the boss g. A screw pin
extends into a groove in the spindle and prevents the withdrawal of the spindle
in the other direction. In the periphery of the said collar k is formed a groove
to receive a cord k¹ which drives a small centrifugal pump m which is adapted
to supply a constant supply of water, soap suds oil or other suitable liquid from
the drip tray to the saw through the tube n. The pump m is attached to the
drip tray A which is formed with raised edges so as to constitute a receptacle to
receive the cuttings, dust, and drip from the saw the liquid being returned to the
saw by the pump m. To facilitate the application of the drip tray A to the
standard a I cast rihs p on the standard and form a gap in the back of the tray to
receive the standard. The drip tray is slid into position between the ribs and is
jammed and held in its place by means of the back set screw 7 which passes through
a threaded bridge r which enters slots in the sides of the gap as most clearly seen in
Fig. 4. The means for clamping and holding the object to he sawn and for setting up
and withdrawing the same towards and from the saw are as follows.
brackets is hinged to the standard by means of a pivot stud which passes through a
boss formed on the standard. The upper part of this bracket s presents a flat face
having a flat stop projection u at one end and a curved recess at the other as seen in
Fig. 1. A clamp is formed at one end with a rounded edge or termination which
fits the aforesaid curved recess in the brackets so that the said clamp is in a manner
hinged thereto. A clamping bolt w is pivotted loosely to the brackets and extends
through the clamp the nut on the outer end of the bolt enabling the clamp to he
A forker

page_text: forced down upon any object which may be laid on the flat face of the bracket s
such for example as a bolt or bar which is to be cut. A coiled spring v³ is placed
beneath the clamp so as to keep it up against the clamping nut and washer. A
stud or bar y also extends between the jaws of the brackets and works freely in
its bearings at each end. This stud or bar y is bored and screwed to engage with
screw which is fitted with a hand wheel by which it may be turned. At
its inner end the screw is reduced and passes through an eye bolt a nut and
washer preventing its withdrawal from the eye bolt. The shank of the said eye bolt
is capable of movement in the snug a which projects from the standard a and through
which the shank passes as clearly shown in the detail view Fig. 5. A nut and washer
prevents the withdrawal of the shank from the snug. When the hand wheel = is
turned so as to advance or withdraw the forked brackets and consequently the object
clamped thereto towards or from the saw the curve described by the racket can be
followed by the screw owing to the manner in which the screw and nut are mounted.
Instead of operating the bracket s by means of the screw as described I might prolong
the pivot spindle and fix a handle or lever upon the end, and in conjunction with
such handle or lever I might use a quadrant with spaced holes and a stop pin to hold
the bracket in any desired position or I might use a ratchot pawl and quadrant rack to
fulfil the same object.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
(1) The general arrangement, construction and combination of parts composing the
improved apparatus for sawing metal substantially as hereinbefore described and as
illustrated by the accompanying drawings.
(2) The hinged bracket for carrying a metal object and presenting it to be operated
upon by a saw substantially as set forth.
(3) The hinged bracket provided with means for clamping the work and acted upon
by a hinged screw in combination with the revolving metal-saw, the tray to catch
the drip and the pump to return the liquid to the saw substantially as and for the
purpose set forth.
Dated this 13th day of November 1889
DUTTON & FULTON,
1, St. James Square, Manchester, Agents.