US1277779A - Combination gas-engine-driven air-compressor. - Google Patents

Description

F. M. TITUS.

COMBINATION GAS ENGINE DRIVEN AIR COMPRESSOR. APPLICATION FILED APR. 4,19I6.

'1 ,277,779. Patented Sept. 3, 1916,

$ 17+ I if]? I r) y @Inuemto:

UNITED STATES PATENT oFFIoE.

FRANK M. arms, or BRADFORD, PENNSYLVANIA, AssIGNon '10 BLAISDELL m oHINEaY COMPANY, or BRADFORD, PENNSYLVANIA, A' CORPORATION.-

ooMiaINA'rIoN GAS-ENGINE-DRIVEN m-oom'rnnsson.

- mamas.

Specification of Letters Patent.

' Patented Sept. 3, 1918.

Application filed April 4, 1916. Serial N 0. 88,939.

To all whom c'tmay concern."

Be it known that I, FRANK M. TrrUs,

' a citizen of the United States, residing at piston for both the gas Bradford, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Combination Gas-Engine-Driven Air-Compressors, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to improvements in combination gas engine driven air compressors.

The object of my invention is to provide an engine 0t this character in which one cylinder is used for the gas engine, and also for compressing the air and using a single engine and the air compressor. I

Another object of my invention is to provide a compressor of this'character in which means is provided for keeping the cylinder and pistons cool, and providing a simple and more effective compressor having certain'details of structure and combination of parts hereinafter more fully set forth.

. In the accompanying drawings:

Figure l is a longitudinal sectional view of my improved air compressor.

Fig. 2 is a sectional view of a modified formof piston. j

Referring now to the drawings, 1 represents a cylinder as shown, and is of an elongated form and surrounded by the water jacket 2, whereby the same'is kept cool, all

of which is well understood in the art of gas engines and needs no further description. The end 3 of the cylinder is closed by a cylinder head 4 having the usual water jacket 5 communicating with the water jacket 2, and is provided with the usual spark plug 6, and the gas intake 7 all of which can be arranged in any desired manner as the specific form of the'spark plug, and also the location of the gas intake forms no part of this invention. The opposite end of the cylinder is closed by a cylinder head 8, which like the cylinderhead 4,hasa water jacket 9 whereby the cylinder is kept cool. The cylinder head has a passage10 leading upwardly through the opening 11, and said opening communicates with a passage 16, which is in communication with a pipe 17 which leads to the tank into which the comthrough the openings 12, controlle pressed air is to be stored or to any other place desired. Within the passage 16 is a cage 12, which is of a cylindrical form and has its lower end surrounding the opening 11, and has its upper end provided with a screw threaded portion 13, screwed into the head 8. The said cage is provided witha series of openings communicating with the passage 16, whereby the air can pass from the cage. Within the cage is a cylindrical valve 14, resting upon the seat 15, carried by the cage 12. Within the cylindrical valve is a coiled spring 12' which has its upper end bearing against a plug 13, screwed upon the threaded portion 13 of the cage, The cylindrical head 8 isprovided with another set of valves 18 which communicates with the cylinder through the passage 19, and communicates with the space 20 which is in communication with the'outside atmosphere,

whereby the end of the cylinder is supplied with air, later to be described. The valves l8 areof a rotary form and-s0 arranged that they are closed when the piston is movingtoward the head 8, by which they are carried so that the air cannot pass out the end of the cylinder but must pass upwardly by the valve 11.

The cylinder head 8 is provided with a stufiing box -21 through which the piston rod 22 passes. This piston rod extends outwardly and is connected through a crosshead and connecting rod to a crank carried by a shaft and on which is arranged the usual fly wheel for balancing the engine. The piston rod 22 within the cylinder 1 is provided with the two pistons 23 and 24 arranged some distance apart and held on the piston rod in said spaced relation. These pistons may be of any desired structure and provided with the usual piston rings 25, all

of which is well understood and needs no description. Communicating with a cylinder between the pistons 23 and 2a are the 45 a through the exhaust exhaust ports 26 are uncovered just as the piston reaches its limit of outward stroke,

and remain uncovered while the crank to which the piston rod is connected is on dead center and allows for the proper exhausting of the burnt gases in the cylinder.

Instead of making the pistons 23 and 24 separate and connecting them to the piston rod 22, as shown in the drawings, the same can be made in one piece and formed of the two pistons 28 and 29 rigidlyconnected by the sleeve 30 and through which the reduced portion 31' of the fully shown in Fig. 2 of the drawings.

The operation of my device is as follows The sparking mechanism is so timed that when the piston 24 reaches its limit of movement to the left in the cylinder, an explosion takes place and forces the piston to the right working against the piston 24. The piston 23 during this movement is compressing the air within the space to the right thereof, and

compressed air is forced outwardly through thus when the air passage 27 is opened, a-

large amount of fresh air is drawn into the space between the pistons 23 and 24 and the pistons kept comparatively cool by said cool The vacuum is caused in the following manner. The piston 24 moves to the right under the force of the explosion and after it has opened the ports 26 by passing the same, the exhaust gases pass out therethrough into the exhaust pipe 32. After the gases have left the cylinder, but are still passing pipe 32, the port 27 is uncovered by reversemovement of the piston 24 to the right and thus both ports'26 the exhaust through the and 27 are ,open at thesame time for a short per od. The exhaust gases passing through pipe 32 create a suction all through the pipe which suction is felt in the space between the. pistons 23 and 24, the samebeing in communication therewith ports 26. The suction or vacuum in the space between'the pistons 23 and 24 draws a great volume of cool air therein through the with the atmosphere. When the pistons .have reached their movement to the right,

, they again travel backwardly to the left, the passa and ge and the explosive charge is compremed within the cylinder between the cylnderhead 4 and the piston 24. The charge is exploded and the piston travels again to piston rod 22 passes as port 27, which communicatesopposite si de .of the piston,

the right, and the same operation takes place. By this construction and arrangement of parts,'it will be seen that through the opening of the exhaust openings inadvance of the air inlet openings 27 a vacuum is caused between the pistons 23 and 24, and when the piston 23 has passed the air inlet port openings 27 the said vacuum draws in a great amount of fresh cool air, and both aid in cooling the pistons and cylinders.

Having thus described my invention what I claim and desire to secure by Letters Patent is:

1. An air compressor of the character described, comprising a cylinder, a piston reciprocatably mounted therein and having a circumferential chamber in its outer periphery, an exhaust port and an air inlet port, the said ports arranged whereby the move? ment of the piston throws them into communication intermitttently with the chamber of said piston.

An air compressor of the character described, comprisin g a cylinder, a piston having acircumferential chamber in its outer periphery reciprocatably mounted within the cylinder, means for exploding a charge of gas on one side of the piston, means for compressing air on the opposite side of the piston, exhaust ports adapted to communi cate intermittently with the chamber in the piston, and an air port adapted to communicate with the said space whereby the exhaust I causes a vacuum therein to draw fresh air into the chamber in the piston for cooling the same.

3. An air compressor, inder, a piston having chamber in its outer comprising a cyla circumferential periphery reciprocatably mounted in the cylinder, means for exploding a charge of gas on one side of the piston, means for compressing air on the other side ofthe piston, exhaust ports for the explosiv end of the cylinder and,

adapted to communicate intermittently with the chamber in the piston, and an air intake communicating with the chamber in the piston, whereby the exhaust causes a vacuum within the chamber in'the piston, and whereby when the said airintake is uncovered by the piston, cool air is drawn inwardly by the vacuum into the chamber in the piston for cooling the same.

' 4. An air compressor com ising a cylinder having both ends close a piston rod extending through one end of the cylinder,

.a piston carried by the piston rod and formedof two spaced members, means for exploding the charge of gas on one side of the piston, means for compressing air on the adapted to communicate with the space between the two members of the piston, and an air port adapted to communicate intermittently with the said space whereby the exexhaust ports haust causes a vacuum therein to draw fresh air between the members of the piston for cooling the same.

5. An air compressor comprising an elon-' gated cylinder having both ends closed, a piston rod extending the cylinder, a piston carried by the piston rod and formed of twospaced members engaging the inner periphery of the cylinder, means for exploding a charge of gas on one side of the piston, means for compressing air on the opposite side of the piston, exhaust ports for the explosive end of the cylinder and adapted to communicate intermittently with the space'between the two members of the piston, and an air intake communicating with the space between the two members of the piston, whereby the exhaust causes a vacuum within the space between the two members of the piston, whereby when the air intake is uncovered by one member of the piston, cool air is drawn inwardly by the through one end of 1 side of the piston,

vacuum for cooling the two members of the piston.

6. An air compressor of the character described, comprising a cylinder, a piston hav-' periphery and reciprocating in the cylinder, means for exploding a charge of gas on one means for compressing air on the opposite haust ports adapted at one time to com- "ing a circumferential chamber in its outer side of'the piston, ex-

municate with the chamber in the piston,

and an air port communicating with the chamber in the piston at the same time the exhaust port is communicating therewith whereby the exhaust causes a vacuum in the chamberto draw fresh air intothe same.

' In testimony whereof Ihereunto afiix my signature in the presence of two witnesses.

' I FRANK M. TITUS.

Witnesses:

HERMAN H. Non'rrr,

' CHAS. F. GENTHUER.

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