appar for coal and ore mining
Year: 1885

page_text: I, SEBASTIAN STUTZ, of No. 326 Highland Avenue, Pittsburgh, in the County of
Allegheny, State of Pennsylvania, and United States of America, Mechanical
Engineer, do hereby declare the nature of my invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
:-
My invention relates to valve operating apparatus for coal and ore mining.
machines of the class in which a pick or cutting tool is operated by a piston
reciprocated in a cylinder by fluid pressure, and my improvements consist in a
novel construction and combination of a distribution valve and mechanism for
actuating the same independently of the movements of the main piston, as
hereinafter fully set forth."
In the accompanying drawings: Figure 1 is a longitudinal central section
through the cylinder, valve chest and valve motor chamber of a mining machine
embodying my invention; Fig. 2, an end view, in elevation, of the same, as seen
from the right; and Figs. 3 and 4, horizontal sections through the same at the
lines x, x, and y, y, respectively, of Fig. 1.
My improvements are shown as applied in a mining machine having a cylinder 1,
which is mounted upon supporting wheels 18, 19, in any approved manner, and is
fitted with a piston 2, fixed upon a piston rod 3, the outer end of which carries one
or more suitable picks or cutting tools.
Motive fluid is admitted to and exhausted from the cylinder 1, by a slide
distribution valve 12, governing supply ports 8, 9 cored in the cylinder and .
establishing communication between the opposite ends thereof and a valve chest 15,
and exhaust ports 10, 11, communicating through the valve 12, with opposite ends
of the cylinder and with the atmosphere.
The distribution valve 12, is fitted to slide longitudinally in the valve chest 15,
over a valve face on the top of the cylinder 1, and is reciprocated by an inde-
pendent engine or valve motor 83, the movements of which are wholly independent
of those of the main piston, so that the valves may be moved with a uniform
travel and at any desired and regulated rate of speed, and is thus adapted
to continuously impart uniform pressure to, and effect the exhaust thereof, from
the piston, irrespective of variations in the stroke of the latter, or interruptions
to its movement which may, from time to time, occur in its operation. The
actuation of a distribution valve by an independent motor is not per se, new, either
in this or in other descriptions of fluid pressure engines, and is not claimed by me
as of my invention, which, in this particular, relates to the improved construction
and combination of the valve motor and its accessories with the distribution valve
and chest as now to be described.
The valve motor 83, is, in this instance, a rotary engine, consisting of a series of
radial blades connected to a central hub, which is secured upon a vertical shaft 84,
fitting bearings in the cylinder and in the base and cap of a chamber 85, which is

page_text: formed centrally in the upper portion of the valve chest 15, above the space
therein in which the valve reciprocates and is closed at top by the lid or cover of
the valve chest. Motive fluid enters the valve chest through either one of two
supply pipes 13, governed by a cock or valve 16, which is operated by a handle
and is so arranged that either or both the supply pipes may be shut off from the
valve chest, or either one of them, but not both simultaneously, may be put in
communication therewith. A cock 86, located at the opposite end of the valve
chest, controls the admission of motive fluid therefrom to the chamber of the valve
motor, by uncovering either of two series of supply ports 87, 88, according to the
direction in which it is desired to rotate the valve motor 83. The latter thus
receives its supply of operating fluid directly from the main valve chest, thus
shortening the length of passages required, as well as avoiding the expense and
inconvenience of exterior connections. The cock 86, enables the speed of the valve
engine to be conveniently regulated, as required, and also provides for the reversal
of its movement, the latter operation being sometimes desirable to overcome a
tendency to stick or to wear in one direction. The exhaust of the valve engine is
effected through openings leading into the atmosphere, on each side of and at the
bottom of the chamber 85. An eccentric, cam, or crank 89, secured upon the
shaft 84, near its lower end, fits in a transverse slot 90, in the distribution valve 12,
and imparts the required reciprocating movement thereto, in the rotation of the
shaft 84. A balance wheel 91, secured upon the outer end of the shaft, serves as
a fly wheel and also enables the engine to be started, if stopped at any time in such
position as to need an initial movement by the operator.
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 combination, substantially as set forth, of a cylinder, a piston and rod
adapted to reciprocate therein, a distribution valve governing the supply and
exhaust passages of the cylinder, a valve chest enclosing said valve, a motive fluid
supply pipe opening into said chest, a valve motor chamber formed in said chest
above the valve space thereof, a pair of supply passages, cored in the walls of said
chamber and extending in opposite directions therein, a cock or valve by which
either of said passages may be opened, either wholly or partially, to the valve
chest, or both closed thereto, an exhaust passage leading from the motor chamber,
and a valve engine or motor, fitting in said chamber, said engine being coupled to
the distribution valve, and being adapted to be moved in one or the other direction,
respectively, by the movement of the cock governing the two supply passages of
the motor chamber.
2. The combination, substantially as set forth, of a distribution valve chest,
adapted to be secured to a cylinder valve face, a motor chamber formed in the
upper portion of said chest, a main supply opening and valve seat or socket, formed
in the walls of the chest and communicating therewith, and a supply opening cored
in the wall of the motor chamber and leading to a valve seat or socket com-
municating with the interior of the chest.
Dated this twenen
Lizzy DI NOVanner
1604
500LY JOUUQAN K An ITTO AAD ST CT
Witnesses:
.
J. SNOWDEN BELL.
R. H. WHITTLESEY.
SEBASTIAN STUTZ.
Carpmael & Co.,
Agents for the Applicant.