US998717A - Pump system. - Google Patents

Description

W. K. READ.

PUMP SYSTEM. APPLICATION FILED AUGRI, 1910.

SHEET 1.

Patented July 25, 1911.

2. SHBETS W L KRBA :EUMP SYSTEM. "SIAIPPLIGATVION TILEDjAUG. 1., 1910.

' Patented July 25,1911

2 SHEETS-SHEET z.

lnvento'r eys 7 To all whom ii-ma'y concern:- i

WILLIA a; READ, or TEXAR'KANA'TEXAS.

' ,1 rUitrsYsrnM.

Specification ofietters Patent.

Patented July 25, 1,911..

' Applicstion'filedAugust 1, "1910. Serial Iho. 574,755.

Be it known that LlViLLmrr K. READ, a

- citizen of the United States, residing at Texarkana, in the county of-Bowie and State of Texas, have invented a new and useful Pump-System, of" which the follow ng is a specification. i

This invention has relation ,to'pump systems and consists in the-novel arrangement of its claimed. I v

The invention also has for its -object-,to

' provide a novel. and improved air compressor,:the same being driven by an internal combustion engine which is automatically stopped when the pressure in the storage reservo1r reaches a predetermined point, and

started when the pressure drops below this point, whereby the operation-of the compressor is controlled, and a predeterm'ined' pressure retained in the storage reservoir I the air compressor,

at all times,

Another object of the invention is to provide an arrangementwhereby the radiator of the engine is utilized to cool and townsh the air free of all grit. Other objects and advantages of the invention will be'made manifest'when the same is better understood, itconsisting in. a novel construction and arrangement-of parts to be hereinafter. claimed. V In the accompanying drawings forming a part. of this specification, Figure 1- is a plan view of .the' invention largely dill. grammatie and partly in section. .Fig. 2 is an end view of the radiator hereinafter referred to. Figs. 3 and 4 are sectional views of the pressure controlling devices. Fig. 5 is an enlarged detail sectional view of portions of the members of the pump system.

Referring specifically to the drawings,

10 denotes a four-cylinder internal combustron engine, and 11 the crank, shaft therelfii, The engine is mountedfon theirame of the car or vehlcle 111 a sultablemanner, preferably at the front. endyther'eof. The construction of theengine is imm'atejriallto the present invent on,.and a detailcddescriptionthereof 1sv therefore deemedunnecessary.

The engine 10 is employed-fordriving the latter comprising cylinders Band 13, respectively, the former beings high pressure cylinder, and the latter a low pressure cylinder, the volume. of?

parts hereinafter described anddescribedand p the latter being considerably greater than the former. The engine and pumpcylinders may be cast an bloc. The engine and pump cylinders are cooled by being provided with a- Xv'ater acket, and a-rudiator His pro-j vided-tthrou'gh which the jacket waiter eircii lutes. In the pump cylinder 12 operates piston -15 having a rod 10' which connectedto a'crank' 1-7 on the shaft l1. In'the' cylinder 13 operates a valved piston "18' \vh-ichis connected by :1 rod 19 to a crank 20' on the shaft 11.. The two pump pistons are I in the pumpcyliir therefore reciprocated ders When the shaft is in motion. cranks 1 7 and 20 are setv180 whenthe piston of one of the i p The apart; so "that pump cylinders is ulking a suction stroke, the piston of I the other cylinder is making a compression stroke. On tlreshaft l1 isa flyuvhcel2l;

At 22 is indicated a reservoir into "which the pump cylinderg13 discharges, through a pipe 23 having a checli valve 24. This reservoir is the lower pressure reservoir, sud nicloses a second reservoir 25 which. is the pump cylinder 12' discharges through "a pipe to high pressure reservoir and into \vhichthef '26 having a check valve '27. Bv-locatiug' the high ntessure'reservoir within the low pressure reservoir, danger of an explosion'is lessened. The'intake port of the pump cyl inder 12 is connected by a pipe 28 to the res ervoi'r 22; In the port a check valves?) which opens into the cylinder. The intake port ofthe pump cylinder 13 is connected.

by a pipe 30 with the radiator i l, aud'this port is also. provided with'a check valve 31.

A )i e 32 leads from the hi' h "Jr essure I reservoir 2510 the motor-33, which latter maybe an ordinary reciprocating engine,

and which connected in a suitable man- ;ner to the drive gear ofthe our. The ex haust. from the engine is led by a. pipe 34" .36 extendsand is conneeted'to the bottom into a miller-35, and from'the inuillcr a pipe"? to the top ofuthe radiator. The pipe 36' has "a portion. 37 which extends ilpivn'rdly' above the level ofthe water in; the reservoir,

to prevent the Water frour running back to the engine when the same is'not working;'i"-" 'he'n-the engine is'iu operation, the -e hausthii' passes through the niufiler, zind'is conducted by the pipe 36 into the radiator,

and passes through the water therein. The

air then leaves the radiator through the pipe and enters the pump cylinder'l3 when 1 the piston 18 thereof is making its suction stroke and is compressed and pumped intothe reservoir 22. B" thus drawing the air through the water in the radiator, it will 6 be washed free of all grit before going to diaphragm, by a pipe 40.. In the casing, on V the other side of the diaphragm, and engaging the latter, is a coiled'spring 41. To the diaphragm is connected a stein 42 which carries a switch 43, the latter operating be= tween two contacts 44 interposed in the ig-. nition circuit 45 of the engine 10, and on trolling said circuit. The spring 41 opposes the pressure in thereservoir 25 against the diaphragm, and flexes the latter ina direction to more the switch 43 so as "to close the ignition circuit when the reservoir pressure drops below the normal. pressure in the reservoir rises above the normal it becomes su'llicient ly great to overcome the tension of the spring, the diaphragm is-fiexcd, and it moves the stem 42 in a direction to break the ignition circuit. \Vhen the pressure in the reservoir drops below the normal, the spring flexes the diaphragm in the opposite direction, and the switch-engages the contacts 44 to again close 40 the ignition circuit. A starting device for the engine is also provided. This device operates automatically by the compressed air supply, through thc follo'u'ing means: A valve casing 46 is connected by a piped? to the low pressure reservoir 22, and has two oppositely extendhjig branches towhich are connected pipes 48 and 49 respi' ctively.

The pipe 48 is connected to the pump eylin-" dcr 12-, and the pipe 49 is connectet to the pump cylinder The outlet ends of the pipes 48 and 4-9 are provided with check valves, 50. -The valve 51 o wratingiin the casing 46 has a seat in said'casing, which seat is located so that'the valve controls the flow of air into the casing from-the reservoir 22 through the'pipe 4'7. when the valve 51 is open, airflows from the reservoir 4 22 through thepipe. 47 into the valve casing 46, and thence passes bythc way ofthe pipes 48' and 49 into the pump cylinders 12 and 13. The casing 46 is connected by a tube 52 to a casing-'33 containing a flexible diaphragm 54. The casing 53 is connected, by a pipe 55 to the reservoir 25 so that one 6 side of the diaphragm will be exposed to the When the the predetermined point, the ignition cir- 'cuit 45 is closed as already described, and

pressure in said reservoir. On the other side of the dlaphragm, the casing contains a coiled spring 56 which engages the diaphragm and opposes flexion of the diaphragnl by the reservoir pressure therc= against. .To that side of the diaphragm is permitted to expand, and thereby flex the diaphragm- 54 in a direction to open the valve 51 whereupon compressed air from the reservoir 22 flows through the pipe 47 and passes-through the pipes 48 and 49 into. the pump cylinders 12 and 13, and is exerted against ,thepistons therein to give the crank shaft a. turn, and thus 'start the engine 101 The'opration is as follows :\Vhen the pressure in thereservoir rises above the predetermined point the valve 51 closes, and

at. the, same time the ignition circuit is lu'oken by the device already described, thus causing the engine 10 to stop. The back pressure from'the reservoir 22 will then fill the pump cylinder 12 througlrthe pipe 28, and force the piston 15 back to the position it occu'piesat the end of the'suction stroke, unless 11: is already in this position. This movement of the piston moves the piston 18 in its cylinder 13 in the o posite direction by reason of the fact that tlie cranks 17 and 20 are set 180 apart, so that said piston 18 is now in the position it occupies at the end of its compression stroke. The mo-- nientum of the fly wheel 21 is added to the back pressure, and assists to move-the pis-- tons as stated. The parts are now in a position for automatically startin the engine 10, the operation being as fol owsz-When the-pressure in. the reservoir 25 drops below the valve 51 opens, and lets compressed air from'the reservoir 22 pass into the pump cylinders 12. and 13. By reason of the greater area of the piston 1.8. said piston is forced 'rearwardlyin its' cylinder, thereby rotating the shaft 11 to start the engine 10.. When the reservoir 25 has again been pumped to -the desired pressure, the engine automatically stops, and the pump pistons again come into starting position as already described.

In order that the'engine may be. started :manually ifnecessary, or desired, there is provided ;.an ordinary starting crank- 5 8 for this purpose. The reservoirs 22 and 25 are connected by a pipe 59 which opens into the reservoir 22,.and the inlet from the reservoir 25 into said pipe is controlled by a check valve 60.

The mechanism herein described, when applied to an automobile or other motor vehicle, makes a noiseless, and extremely economical and highly powered car, and the latter is easily controlled. The mechanism is also without complicated parts to get out of order, and is efficient and reliable in op eration.

The preferred embodiment ofthe inven tion has been shown, but it will be understood that various minor changes in the structural details may be resorted-to Without a departure from the invention. The application of the compressor mechanism'and its controlling devices is not limited to motor vehicles, but said parts may be employed in variousother capacities;

\Vhat is claimed is 1. The combination with an air compressor and its reservoir, of an internal combustion engine driving the compressor, and having an electric ignition system, a switch interposed in the circuit of the ignition system, and means for starting the engine,

said switch and starting means being controlled by the reservoir pressure.

2. The combination of an air compressor having high and low pressure cylinders, a storage reservoir for each cylinder, an internal combustion engine driving the compressor, inlets into the cylinders trom the reservoir of the low pressure cylinder, and a valve controlling said inlets, said valve being controlledby thepressure in the reservoir of the high pressure cylinder.

phragm valve controllin having high and low pressure cylinders, a

storage reservoir for each cylinder, an internal combustion engine drivin the compressor, inlets 1nto the cyl nders rom the reservoir of the low pressure cyllnder, and a diavalve being under the in uence of the pressure .in the reservoir of the high pressure cylinder.

4. The combination with an internal combustion engine of an air compressor having high and low pressure cylinders, a storage reservoir for each cylinder, the .hi 'h pressure cylinder obtaining its supply from the reservoir of the low pressure cylinder, inlets said inlets, said from the reservoir of the low pressure cylinder into the cylinders, and a valve controlling said inlets, said valve being controlled by the pressure in the reservoir of the high pressure cylinder. I

5. The combination with an internal combustion engine of an air compressor having high and low pressure cylinders, the low pressure cylinder having a greater volume than the high pressure cylinder, storage reservoirs for each cylinder, inlets from the reservoir of the low pressure cylinder into the cylinders, and a valve controlling saidinlets, said valve being controlled by the pressure in the reservoir of the high pressure cylinder.

In testimony that claim the foregoing as my own, I have hereto afi'ixed my signaf ture in the presence of two witnesses. -WILLIAM K. READ.-

Vitnesses EUGENE D.. ELLIS,. Homer W. VAUGHAN.

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