US81759A - George edmund donisthorpe - Google Patents

Description

@uitrit grafts geirrt @fre- GEORGEEDMUND .ooNIsTHoRPn oF LEEDS, ENGLAND.

Letters Patent No. 81,753, dated September-1, 1868; patented in England, April 28,.; 8613.

IMPROVED GOAL-MINING APPARATS.

TO ALL 'IO WIIOM IT MAY CONCERNE Be it known that I, GEORGE EDMUND DONISTHORPE, of Leeds, in the,ccunty of York, England,.a subject of the-Queen of Great Britain, have invented or discovered new and useful Improvements in Apparatus Used when'Getting Coal and other minerulsg and I, the said GEORGE. EDMUND DONISTIIORPE, do hereby declare the nature of the said invention, and in what manner the same is to be performed, to be particularly described and ascertained in and bythe following statement thereof; that/is to say- This invention has for its object improvements in apparatus used when getting coal and other minerals.

l i When using a travelling-carriage, with picking or other cutting-apparatus mounted thereon,.for getting coal and ,other minerals, it has been usual, in order to resist the vibration consequent on the regula-r ,successivo impacts or actions of the picks or other cutting-tools, to make the carriage of considerable weight.

low, the object of the present improvemcntsis to obtain the requisite Stability and capability to resist vibration when a light travelling-carriage is employed, and the improvement herein claimed consists in a novel method of holding the carriage between the floor and roof of the mine, by applying a wheel or wheels to the carriage to act against-the roof of the working, in addition to thewhecls or slides, which rest on the rails or ways, along which `the carriage is'moved from place to place inthe coal or other mine which is being worked,

such additional wheel o'rV wheels being pressed elasticallyagainst the roof of the mi ne,lso as to accommodate itself to irregularities thereof.

The improvement consists, further, in the employment of a piston in a cylinder containing compressed air, acting directly or by-interposed levers on the axis ofthe wheel orwheels in contact with the roof, substantially as hereinafter shown, as the most convenient means of applying therequisite'pressure.

And in order thatimy said invention may be most fully understood and readily carried into effect, I will proceed to describe the drawings hereunto annexed.

Description of the Drawings. Figure lis a side view, Figure 2 an end view, and l Figure 3 a plan of apparatus for getting coal or othermineral, arranged according to my invention and in the manner I prefer.

Figures 4 and 5 show some of the'p'arts separately. v a a is the framing or carriage of the machine; it is mounted on wheels which run on tramways e c. d" is va horizontal cylinder, tted with a piston, and suitably arranged for being worked with compressed air; it

`is'iirmlysecured to the frame or carriage a a, cZ is the rod` of the piston; Working in the cylinder d; its outer end is passed through the barfl forming part of the sliding or travellinglframe and is there secured between nuts d2 d2. A small cylinder, e, is cast on the cylinder d, and in the cylinder csoitable pistou-valves Work to admit'compressed airalternately on either side ofthe piston in the cylinder cl, so-as to cause the piston, withits rod and parts connected therewith, to move to and fro. A ilexible pipe is employed to conduct the 'compressed air to the apparatus from the air-pumps or other machinery' employed to condenseil.. The valve-rod el, employed to actuate thc valves, `may either be worked by a lever-handle, e2, worked by hand, as shown, or, if desired, the

.valve may be' made self-acting. g is another cylinder, alsorcast in the same piece with the cylinder d; it stands vertically upon it; and within the 4cylinder g is a plunger, It; it is furnished at its lower cndlwith metallic packing, to cause itvto {it the cylinder air-tight, and it has two lugs, h1 h, cast upon its upper end. 'Between the two lugs 7t,'a frame, consisting of two plates or cheeks, 7a2 h?, is received and pin-jointed at ha. Four or other convenient number ofwh'eels, it* Mare mounted between the plates or. cheeks h2 h2 and the studs on which these wheels revolve serve to hold together the plates or cheeks h2. By ripening a cock, provided for-the purpose,

compressed air can be'admittefl to the cylinder g, and the'plunger L is caused'to-rise until the wheels z press` against the ceiling or roof of the working to steady the cutting-apparatus whilst in action. 'h5 is a groove or recess formed in the plunger h.l A key, g', fixed in the mouth ot' the cylinder g, enters this groove in order to prevent the plunger h from turning in the cylinder. z'z'are the cutters; they are slidden into the grooves orA channels f2 of the frame f, and are held securely by cutters z". The arrangement of the cutting-mechanism may,` however, be greatly varied, l v

Having thus described the nature of my invention, and the manner of performingthe same, I would have it understood that what I claim, is- Y The combination', in mining-machinery, of the travelling-carriage that carries the mining-mechanism, with a yielding-pressure wheel, which, while pressing the said carriage upon its track, and preventing its rise, permits it to be moved forward without relaxing the pressure, the combination'being substantially as set forth.

Also the combination and arrangement of the said travelling-carriage, that carries the mininglmeehanism,

with an air-cylinder, to `apply the pressure required to hold the said carriage uppn its track, substantially as above set forth.

G.. E, DONISTH'ORPE.

Witnesses W. H. COWLEY,

Images