US684794A - Acetylene-gas generator. - Google Patents

Description

No. 684,794. Patented Oct. 22, |901.v M. D. CUMPTUN.

ACETYLENE GAS GENERATOR.

(Application led Feb. 11, .1899.)

WHQEESES.

UNITED STATES PATENT OEETCE.

MELVIN D. COMPTON, OF ORANGE, NEW JERSEY, ASSIGNOR TO FRANK `FULLER, TRUSTEE, OF NEW YORK, N. Y.

AcETYLENE-GAs GENERATOR.

SPECIFICATION Olmllg part 0f LeTS Patent NO. 684,794, dated OC'GObeI 22, 1901.

Application filed February ll, 1899. 'Serial N01 7051333- (NO model-l l To all whom, t may Concern:

Be it known that I, lWIELvrN DCOMPTON, a citizen of the United States, and a resident of Orange, in the county of Essex and State of New Jersey, have `invented certain new and useful Improvements in Acetylene-Gas Generators, of which the following is a specification.

My invention relates to acetylene-gas generators, more especially of the kind in which the carbid-holder is automatically plunged into or raised out of the decomposing liquid.

The object of my said invention is to provide an air and gas tight seal for the gasholder, so as to enable the carbid-receptacle to be removed from or inserted into the gasholder with the minimum escape of gas and the least possible admission of air when the said receptacle is removed or inserted.

Referring to the drawings, Figure l shows a vertical section of a combined generator and holder provided with a dome containing a liquid seal to which the carbid-receptacle is attached. Fig. 2 shows a vertical section of the separable carbid-holder and illustrates the manner in which the carbid is retained within the perforated holder. Fig. 3 shows a cork float for indicating within a limited range the amount of liquid present in the generator.

In Fig. l, A designates the water-tank; B, the gas-holder; C, the dome-seal, provided at the top with perforations l l l for the exit of the heated air; D, the carbid-holder; E, the water-reservoir, controlled by the iioat-valve F Gr, the water-supply pipe, controlled by the valves g and g; G', the water-gage for showing the height of the water inA; H, the gasdelivery pipe; J, an upwardly-acting liquidvalve in the gas-outlet; j, avalve for controlling the gas-outlet; P P, the safety-pipe, controlled by a weighted liquid safety-valve O. L is a pipe adapted for holding a predetermined quantity of gas in free communication with the gas-holder. Z is a valve situated in the pipe L and is normally closed. M is a means for operating the valve Z.

In Figs. 2 and 3 is the perforated carbidreceptacle, within which is suspended, by means of the hooks or a spring-ring l 1, the absorbent carbid-bag 2.

The reason for the construction illustrated in Fig.. 2 is the following: If the carbid be placed directly in the perforated receptacle 3 without the interposition of the carbid-holder 2, some of the decomposed carbid will .fall through the perforations, and thereby pollute the liquid in A and tend to clog the pipes leading thereto; but the greater portion of it will be deposited on the sides and bottom of the perforated receptacle 3, thereby rendering the renewal of the carbid charge difficult and disagreeable. By the arrangement shown in Fig. 2 these inconveniences are avoided, and the exhausted carbid can be removed by simply detaching the bag 2 from the hooks l l. Another object of the absorbent carbidholder 2 is to admit the liquid gradually to the carbid instead of directly through the perforations.

The combined generator and holder works in the usual manner.

The renewal of the carbid charge is in the ordinary construction of generators a source of annoyance and danger, because when the carbid-holder is removed there is an escape of acetylene gas into the surrounding atmosphere and an entrance of air into the generator. It is desirable to avoid both these results. It is for this purpose that I have invented my improvement shown at the top of the gas-holder in Fig. l.

Upon the top of the gas-holder B there is constructed a liquid seal C' in the form of a cylinder partially or wholly filled with liquid. Into this plunges the valve d d. This valve has as its body part a cylinder O, exactly filling the space between the internal walls of the seal O', and to its under part is suspended the carbidreceptacle D. The valve rests on the top of and closes there the seal C. Referring now to the pipe L, this when the generator is working will always ybe lled with gas, and its size is so proportioned that its cubical contents shall exceed that of the cylinder O for a purpose which is now to be explained.

If it were desired to renew the carbid in the holder and the valve were raised out of the sea1,a suction would be produced and air by means of a valve or otherwise would be admitted to the gas-holder but in my arrange- Ion ment when the Ivalve cl d is to be removed from the seal C the Valve Z in the pipe L is opened by means of M, thereby relieving the suction-pressure but the amount of gas in L on account of the construction of the latter exceeding in cubioal contents the contents of the space left by removing the cylinder C the gas from L will entirely fill that space, and although there will be air iu the top of the pipe L none of it will enter thegas-holder. As this gas at the time of changing the carbid-holder is under simple atmospheric pressure, little or no gas will escape into the air and little or no air will enter the top of the holder during the short interval required for insertinga fresh carbid-holder. When the carbid-holder is inserted, the pipe L is connected with the safety-pipe P/ by the valvel being opened, and both the air and gas in the dome-seal will be driven out.

As a means of telling how the liquid stands in A, I place in the top, hung over the edge thereof by the hook r, the device shown in Fig. 3, consisting of two cork balls R It', hung as represented. These cork balls will ioat the device, so that the rod R will project above the tops of A. When the water falls, so that the hook r rests upon the rim of A, it shows by properlyadj usting the length of the rod R that the level of the water is below the bottom of the carbid-receptacle D. lVheu the water-gage G', Fig. 1, is employed, the iioat may be dispensed with.

Having thus fully described and illustrated my invention, what I claim is-- l. In an acetylene-gas generator, the combination with the gas-holder and the deliverypipe therefrom, of a cylindrical liquid seal at the top of the generator, a safety-pipe, anormally closed branch pipe extending from the delivery-pipe to the safety-pipe, said branch pipe being proportioned to the capacity of the cylindrical seal, for the purpose of preventing access of air and the escape of gas, substantially as set forth.

2. In an acetylene-gas generator, the combination with the liquid seal ofthe gas-holder and gas-delivery pipe of a safety-pipe, a nor mally closed branch pipe proportioned to the capacity of the liquid seal and leading from the delivery-pipe to the safety-pipe, and a manually-operated valve, as and for the purpose set forth.

Signed at New York, in the county ot New York and State of New York, this 10th day of February, A. D. 1899. Y

MELVIN D. COMPTON.

Witnesses:

C. L. BELCHER, W. LEMIEN.

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