Pneumatic Ore Stamp.
Year: 1898

page_text: Pneumatic Ore Stamp.
I, GILBERT Grossor, of 25, Cambrian Terrace, Elland Road, Leeds, in the
County of York, Mechanical Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
A peumatic ore stamp in such a manner as to insure less liability to get out of
order, that is, having less working parts which makes it more durable.
Comprises a cylinder provided with slides, working in guides formed on the
standards. A rapid vertical reciprocating motion is imparted to the cylinder by
means of a crank working in a horizontal slide on top cover of cylinder.
About the middle of the length of cylinder is one or two holes which are open
to the air. The piston rod which works in cylinder and coupled to the stamp head
in the ore box passes through a bracket which carries a bush, worm wheel and clip.
The hole in worm wheel is bored taper and the brass bush that passes through
bracket is made taper to suit worm wheel, and the weight of the wheel with
being taper causes the friction for the rotation of piston rod. The above bracket
is made with a hole about the centre of boss, to receive a clip which outside
of bush passes through, and the bush named above that carries worm wheel is
split, and two thirds of the length of it is reduced to allow it to spring towards
the piston rod.
The clip that is inserted in bracket as named above is tightened by screw and
lever for compressing the bush, the piston rod is grooved or fluted on the part
that passes through the bush. The shaft that carries the worm to work in wheel
is carried by two loose or fast bosses on stamp standards and is worked by a belt
which is driven by crank shaft that works the cylinder. This one bracket named,
that carries worm wheel, clip, and bush, answers (3) three properties, that is,
giving rotation to the piston rod, guide for ditto, and clip for stopping the piston
rod and holding it up without interfearing with the driving belt that works the
crank shaft and worn wheel shaft, the worm wheel slipping round on bush at
the same time, while piston and bush is stopped as named above. I alter the
weight of blow to suit the nature of the ore or material to be crushed while the
stamp is working. I do this with a valve near the top of cylinder. The valve
end works against a slide which is taper at the bottom side and works in a bracket
which is made taper to suit ditto and fastened to the face of stamp standard.
One end of this slide is a connecting rod coupled to a hand lever which is carried
on stamp standard, and a quadrant connected to the same for fastening the hand
lever when the slide is set against the valve end for regulating the required weight
of blow.
1000

page_text: without interfering with the driving belt that works the crank shaft and worm
wheel shaft, the worm wheel slipping round on the bush at the same time
that the piston and bush is stopped.
I alter the weight of blow to suit the nature of the ore or material to be
crushed while the stamp is working. I do this with a valve near the top of the
cylinder.
The valve end T works against a slide U which is taper at the bottom side and
works in a bracket Y which is made taper to suit the same and fastened to the
face of the stamp standard. At one end of this slide U is a connecting rod V
coupled to a hand lever W, which is carried on the stamp standard, and a
quadrant X is connected to the same far fastening the hand lever W when the
slide is set against the valve end for regulating the required weight of blow.
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. In ore stamping machines the employment of the worm wheel having a
taper hole corresponding with and working upon the taper bush, so rotating the
piston rod by friction and changing the position of the stamp head, substantially
as shown and described.
2. In ore stamping machines the employment of the bracket K having
bushes L, L1, L2 and clip N, for stopping the rotation and holding up the piston
rod when required, substantially as described.
3. In ore stamping machines the bracket K, made in two parts and carrying
the worm wheel M, bushes L, L, L2, and clip N, which, whilst giving rotation
to the piston rod, acts as its guide and carries the clip for stopping and holding
up the piston rod when required, substantially as shown and described.
Dated this 20th day of December 1898.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicant.