US932916A

US932916A - Apparatus for removing gases and foul air from mines.

Info

Publication number: US932916A
Application number: US49145709A
Authority: US
Inventors: Joseph C Stirling
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-04-22
Filing date: 1909-04-22
Publication date: 1909-08-31
Anticipated expiration: 1926-08-31

Description

J. G. STIRLING.

APPARATUS FOR REMOVING GASES AND FOUL AIR PROM MINES. APPLICATION FILED APR. 22, 1909.

932,916. Patented Aug. 31, 1909.

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I xosnrn 0.; srmmne, or ieamnsrown, rnnnsrtvanm- APPARATUS ron-nniuovine easinfsiinn FoULiaIRrBonMnvEsi To all whom it may concern:

Be it known that I, JosEPH C. ST nnI'Nc, a citizen of the United States of America, residing at Bakerstown, in the county of Allegheny and State of Pennsylvania, have invented certain new and. useful Improvements inw Apparatus for Removing Gases and Foul Air from Mines, of which the follow ing is a specification, reference being had therein to the accompanying drawing.

This invention relates to an apparatus for removing gases and foul air from mines, and theobject of the invention is to provide an apparatus that can be easily located in the entry or rooms of a mine for withdrawing".

gases and foul air therefrom, without interfering wlth theoperation of cars or workmen within the mlne.

A further objectof this invention is to v provide a simple and durable apparatus that will tend to create a vacuum in a mine and consequently draw fresh air into the rooms of a mine through the entry and shaft thereof.

lVith the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts hereinafter more specifically described.

and illustrated in the accompanying drawings wherein is shown the preferred embodiment of the invention, but it is to beunderstood that changes, variations and moditications can be resorted .to which come within the ope of the claims hereunto appended.

In t- 1e drawings, Figure l is a sectional view of the entry of a mine illustrating the arrangement of my apparatus, therein, Fig. 2 isa cross sectional view of the same, Fig. 3 is an enlarged longitudinal sectional view of a jet forming part of the apparatus, and Fig. 4 is a cross sectional view taken on the line X X of Fig. 3.

Referring to the drawings by reference characters, an apparatus in accordance with this invention comprises an ejector consisting of a hollow cylindrical body-portion 1 open at each end and having the periphery at its ends exteriorly threaded as at 2, 3, respectively. The body-portion 1 approximately centrally thereof is provided with an angularly disposed nipple et formed with interior threads and which communicate with an L-shaped bore 5 extending transversely and longitudinally with respect to the bodyportion 1. The bore 5 gradually tapers from the transverse portion to'the end of the low M Specification of Letters Patent. Patented All Application filed @1122; 1909. sem No. acres?! rear portion of tracted. Mounted upon the threads 2 of the bodyf 3 portion 1 is an interiorly threaded coupling T 8 to which is attached a gas inlet pipe 9 ex:

' gitudinal. portion thereof," the transverse portion beingof greater diameter than the longitudinal portion. The longitudinal portion of the bore extends rearwardly to the rear end ofthe body-portion 1. The longitudinallyextending portion ofthe bore 5 and a part of the transversely extending portion is formed in an'internal enlargement 6 within.

the body-portion 1 and it is approximately half the length of the body portion 1.

Owing to the providing of the body-portion: l with the internal enlargement 6, the opening of the body-portion at the forward end,

is cylindrical and atthe rear end is of-cres cent or inverted U-shape in contour as at 7. Under such conditions, the opening at the the body-portion is contending in the same direction as thebody vv 5 portion and has its'free end provided with a flared or funnel-shaped mouth 10. Secured to the threads 3 of the body-portion 1 is an elbow 11 for coupling to the Ody-portion a pipe 12 which depends and is disposed at right angles with respect to the body-portion l. The pipe 12 constitutes a discharge pipe and communicates with an exhaust or outlet pipe 15. Secured to the nipple 4 is a depending pipe 13 which is disposed at right angles with respect. to the body-portion 1 and communicates with a compressed air supply pipe 14: whereby compressed air is supplied to the bore 5. The pipes 14 ex tend along the entry 16 of a mine adjacent to the sidewalls thereof so as not to interfere with the passage of the workman or the cars. The

pipes

12 and 13 are angle-shaped and extend upwardly at the side walls of the entry and at the top thereof and communicate with the body-portion 1, the latter being disposed approximately centrally of the top of the engine.

The exhaust or outlet pipe 15 hasone end thereof closed while the opposite end extends up the shaft or opening 17 of the mine,

- while the pipe 14 has one end closed and its opposite end connected to an air compressor or pump.

\Vhen compressed air is supplied to the ejector the air discharged by the bore 5 creates a suction in the eject-or and draws the gas and foul air through the pipe 9, into the body-portion 1, and is discharged therefrom into the pipe 12 which opens into the exhaust pipe 15, the gas and foul air being discharged above the shaft or opening 17, one or more of the ejectors can be located upon the pipes 14 and 15 and furthermore the ejectors can be located at suitable places throughout the mine wherever gases and foul air have a tendency to accumulate.

From theforegoing description taken in connection with the accompanying drawings, it is evident that the invention aims to msure perfect safety to miners by removing t'oul air and gases so as to prevent explo- -;i()l1.

Having now described my invention, what I claim as new, is

1. In an apparatus for exhausting foul air from mines, the combination with a compressed air supply pipe and an exhaust pipe adapted to extend in the mine, an ejector comprising a hollow body-portion having an internal enlargement provided with an k shaped bore gradually decreasing in'diameter from its inlet to its outlet end, said internal enlargement contracting the openin of the lmdy-portion at one end thereof an said enlargement of a length approximately half the length of said body-portion and terminating at one end at the rear end of the luuly-portion, said body-portion further provided with an inlet nipple opening into the enlarged end of said bore, a disclr'rge pipe counnunicatilw wii-lz. "he rear ut of the body-portion, a compressed air feed pipe communicatin with said nipple and with said supply pipe, and a foul air inlet pipe connecting wit 1 the inlet end of said bodyportion and havin the free end thereof provided with a flare mouth.

2. In an apparatus for exhausting foul air from mines, the combination with a compressed air suppl pipe and an exhaust pipe adapted to extent into the mine, of an ejector comprising a hollow body portion provided with an internal enlargement formed with a substantially L-shaped bore gradually decreasing in diameter toward the discharge end of said body-portion and terminating at the discharge end of said body-portiomsaid body-portion further provided with an air inlet nipple communicating with the enlarged end of said bore, an angle-shaped discharge pipe communicating with the discharge end of said body-portion, an angleshaped coni'pressedair feed pipe communicating with said nipple and with said compressed air supply plpe, and a foul air inlet pipe communicating with the inlet end of said body-portion.

In testimony whereof I aflix my signature in the presence of two witnesses.

JOSEPH o. STIRLING.

\Vitnesses:

A. H. Ransrio, Max H. Snomvrrz.