US598149A - Joseph h - Google Patents

Description

(No Model.)

J. H. HOADLEY.

AIR COMPRESSOR.

Patented Peb. l, 1898.

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UNiTnn STATES PATENT @erica JOSEPH Il. IIOADLEY, OF NEV YORK, N. Y., ASSIGNOR TO THE COMPRESSED- AIR POWER COMPANY, OF SAME PLACE.

AIR-COMPRESSOR.

SFECIFICATION forming part of Letters Patent No. 598,149, dated February 1, 1898. Application tiled January 8, 1896. Serial No. 574,679. (No model.)

To alli whom t may concern: ratio between the air-pressure and the tem- Be it known that I, JOSEPH H. HOADLEY, perature of the water. acitizen of the United States, and a resident F is a compound air-pressure pump driven of the city, county, and State of New York, by the air-motor A, G, I-I, and I being the 55 5 Vhave invented a cert-ain new and useful Imsuccessive low-pressure, medium-pressure, provement in Air-Compressors, of which the and high-pressure cylinders of the same, and following is a specification. K, L, and M the successive coolers and re- My invention relates to compound or mulceivers. The air from the first compressiontiple stage compressors in which the air is cylinder G is taken by pipe O before it en- 6o xo compressed in succession by a number of ters cooler and receiver K orby pipe O after cylinders, the rst cylinder taking in atmosit leaves the latter and led to air-heater C, as pheric air and after compressing it to a cershown. The first cylinder G of the comtain degree passing it to an intermediate represser is made not only large enough to supceiver, which may also have means for cool ply its proper proportion of air to the cylin- 65 r 5 ing the air heated by compression, the air derH,butalsotosupply an additional amount passing from thence to a second cylinder, to be used in the air-heater to furnish by abwhere it is again compressed to a still higher sorption of energy in said heater the power degree and then passed to a second Vreceiver to do the Work required. A or cooler, and so on. P is a piece of apparatus drawing air-pres- 7o zo My invention consists in combining such a y sure of the first degree through pipe R.

compressor with apparatus adapted to use air Q is a piece of apparatus requiring prescompressed to different degrees, and in con sure of the second degree and supplied by structing the compound compressor so that pipe R from the secondary receiver, and Sis the desired different degrees of pressure rea piece of apparatus adapted to be worked 7 5 25 quired by the consuming apparatus will corby pressure of the third degree supplied respond with the different degrees of presthrough pipe R". sure produced by the different cylinders of The operation Will be clear from the followthe compressor. ing: The low-pressure cylinder G is large My invention more specifically consists in enough to supply more compressed air than 8o 3o combining such a compressor with an aircan be utilized by intermediate cylinder I-I, motor for driving the same and an air-heater and the cylinder H supplies more compressed taking air under one of the lesser degrees of air than can be utilized forhigh-pressure cylpressure, the cylinders producing such lesser vinder I. The surplus compressed air from degree of pressure being made large enough cylinder Gis led to heater C and serves to 85 35 to supply this extra draft of low-pressure air operate air-motor A. For starting motor A and yet supply its proportion of air to the or to make up any deficiency in supply from next cylinder in theseries. cylinder G air may be forced into heater The accompanying'drawing represents a through pipe D. A pipe R, leading from combination of apparatus embodying my imcooler K, supplies air to apparatus K, a pipe 9o 4o provenient. R from cooler L supplies the apparatus Q, A is an air-motor taking air under presand a pipeR supplies the apparatus S from sure of, say, iive (5) atmospheres through the the high-pressure cooler and receiver M. pipe B from an air-heater C. The air-heater Having thus described my invention, what is similar to an ordinary steam-boiler. The I claim, and desire to secure by Letters Pat- 95 45 cold air under pressure of, say, five and oneent, is-

half (521,-) atmospheres is forced in through l. The combination with a compound airpipe D u nder the water and allowed to percompressor having a low-pressure cylinder colate up through the water, which is kept large enough to supply more compressed air hot by means of furnace E. Any desired than is required by the high-pressure cylin'- 10o `5o amount of water-vapor may be' allowed to der, of an apparatus driven by compressed air,

pass over with the air by having the proper and apassage leading from the compound aircompressor between the high and 10W pressure cylinders and communicating with said apparatus, substantially as set forth.

2. The combination with a, compound aireompressor having a 10W-pressure cylinder large enough 1.o supply more compressed air than is required by the high-pressure cylinder, of a passage leading,` from said 10W-pres-

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