US1789376A - Air compressor - Google Patents

Description

Jan. 20, I931. wHlTE I 1,789,376

AIR COMPRES SOR Filed Aug. '7. 1929 2 Sheets-Sheet l Jan. 20, 1931. E, H, WHITE 1,789,376

AIR GOMPRESSOR Filed Aug. 7, 1929 2 She'eis-Sheut 2 INVENTOR.

H. \NHTE Q all v Earl Patented Jan. 20, 1931 man 11, was, as PERRY, rbwii AIR ooivrritiisso nff i V hj iilication'iileii hig er,

The present 1 invention relates to air eomstator-attachments oi a novel construction which-may be uickl and easily applied to ai'itoinobile-triick', tractor or the like "Inotor 'blocjksfor .ntiliziiigfthe blocks from new "or used ehgi'nes as the body portions of air-com press'ors. 1 M

[It isvvelhknovvn that in the e'il'uipm'entof construction companies, garages'fand varioils 7 industrial bonc'erns, air compressors play a very important part, and'also that in nearly all cases thereis included iii-this eqnipment eithe'rnewor ised engine blocks; f

us It is also well known that it is' easyte ob: tain motor blo'eks'and assemblies of the Ford: inodel T 'and'ho'rds'on typebecause oftheir Widespread "distribution, it is "therefore another object of this inveiitioh to provide at attachments which are particularly adaptable to this type of motorblock, f-

'Fnrther, an advantage 0f attaehi'nents of thisnature is in thefease of obtainingrepair partsfor this type of block andonaccount "of the special adaptation of machines and tools for making repairs-upon the blocks;

fur'ther object of the invention is to provide attachments which are relatively simple and economical in construction and few in 3Q 'Iiiimber, and which may be ea ily 'andqiiicklyappli'dto theblock. The s eciai iiipmeht er this invention which is nec ssary is a novel construction of cylinder hea'd', vvith novel arrang'eiiient of valves therein,]an'd a peci a] crank case vvhich' providesa support for the air compressor and a 'siiitable oil reservoir toinsurep'roper lubrication; p i

'A still further object of the invention is to provide an air compressor of this general type 'ivhieh has considerable capacity at relatively low costvvcoinparedwith compressors .oflike For. th purpose of priming the m-otr a pressing air. P p I Withthe foregoing and. other objects in view, the .inventionvvill be more fully de capacity Which-are bnilt espeeially for comscribed hereinafter and willbe more, partic-' e fularly pointed out in the claims appended hereto. In the :di'awing's; wherein like symbels re- Figure "5 is a bottom 1929.. Serialsagas;

v V --fer-to like 'o'i corresponding parts thliQIlglI f: pressors, andhas for-an object to provide a Figure 1 is a longitudinal 'vertical'section taken through an airjcornpre's'sor Constructed according to the present invention. 7 it H -';Fi'g'ure 2 is a'frag'rnent'ary top plan View of the same; the springs and cap screws being removedfromthe top of the cylinder.

Figure 3 is a transverse section" taken through one end of the compressor 'sub'stan- 6'0 tia-llyen the line 3'-'3 of Figure 2.

Figure is asiinil'ar View taken "on the lineiH-of Figure 2, and planvi'ew ofthe iinpr'ovedhea'd;

shown in the present instance as having-four bores or cylinders 11 therein, and also pro vided With-the usiialwater ja'cket12. [The 7'0 cylinder bloek-lO is also provided at one side with the usual intake openings l3, exhaust openings 14 andthe'correspon'ding valve seats '15. At'the same side of the blocklO, and in line Withthe' valve seats .15 are disposed the iisualguides 16 for-valve rods 17 and thei'r tappets 18. In thepresent instance the exhaust valves with their ipartsarebmitted, While, 'asshoWn inFigure 4, the intake valves 19 are retained so as to control the inflow ofso 1 air to the cylinders 11. Instead j of the relatively heavy valve spring, a light valve spring 20 'is mo'unted in the usiial niaiiner upon the valve stem 17 so as to lightly hold the valve 19 in closed posi- I tion and'admit "of the lifting of the valve by Y suction in the cylinder 11; -Theintake valves 19 open in to ports or passages 21 which led into the upper ends of the 'cylindersyll and serve, to admit air to the cylinders When the piston '22 moves-downwardly therein.

shaft 'QZ gmay be mounted lengthwise 7 along one side and at the bottom of the-block 10; the crank shaft'shoivn M123 and having cams thereon, one earn for each tappet 18. The cam shaft 23 is provided upon one end 'andiexterioilyoithe bl'obklO with a crank handle 25 by means ofwhich the shaft 23inay be turned to liftfthe intake valves 19 andaiipresent instance is shown as provided upon one end with a combined pulley and flywheel 28 which may receive a belt' ther eover and which also is adapted to carry the crankshaft 27 over the dead load period in the cycle of the operation ofthe compressor. The block is provided wat a novel construction of crank case29'which is secured to receivingthe desired quantity of oil andmai'ntain, the same in such position that the crank portions may dip into the body'of-oila-ndpro- .vide, a lubricating system of the splash type for supplying, the -cylinders,- pistons, and

other parts of the compressorwith the proper amount of lubricant. The crank case 29 is provided-with any suitable means'of support,

and in the present instance thecrank case 29 is provided-at one end'with a flanged leg 30 which may be bolted orv otherwise secured to the floor 31, and at its other end is provided with preferably a pair of diverging or downwardly arched legs 32 which may also be bolted or otherwise suitably secured to, the

floor 31.

It will be. noted that the pair 'of legs 32 is provided upon the end of the crank case 29 at which is located the fly wheel 28 so-as to resist the lateral vibration of the fly wheel. 7

V nelsand chambers required.

The'improved head of the air compressor comprises a casting or body portion 33 having a water jacket 34'and provided with a bottom wall 35 seated on topofthe block 10 and eX- tending over the block. The head is also provided with suitable apertures and cavitiesfor intercommunication with the corresponding apertures and cavities in the block '10 for the free circulation of water or other cooling medium, and also to provide the various chan- The block 33 is secured by bolts 36 or the like to the block 10, and the lowe'r wall 35 is provided at its under side with cavities which register with and form part of-the cylinders 11, and the wall 35 has cot-axially with each cylinder ,11 an exhaust opening the upper side of which is provided with a valve seat 37 opening into a longitudinally. extending chamber38 disposed between the lower wall 35 and a horizontal partition wall 39-,whichis spaced above the wall 35'. The head 33 is providedtherein Witlrvalve casings 40; one for each cylinder '11, and preferably disposed co-axially therewith. Each valve casing40 is provided with a plunger valve 41, the lower end of which tapers and is adapted to engage theseat37.v I

7 ends of-the head33 shown in Figure 1. the block 10 and is of suitable proportion for Each valve 41 is cup shaped and opens up- 1 wardly and seated at its lower end in the the air-tin the cylinders 11 are not under compression. V p

i The head33 is provided with a common outlet nipple 44 which communicates with the chamber 38 andis adapted to receive airtherefrom underpressure, and the nipple 44 ispreferably." located intermediate the From Figure 3 it. will be'noted that the lower wall. 35"of the-cylinder head 33 is uninterrupted so as to provide a flat closure 45 which not only seals the head 33 in position: on the block, but also seals the exhaust opening 14. ,i Inoperation, the crank shaft 27 is turned either byme'ansfof the pulley 28, or any other suitable; drive means. The cam shaft 1- 23 isturnedsofas to raise the intake valves 19 into open position untilthe crank shaft 27. reaches a 'desired speed of rotation when the camshaft; 23may. then' beturned to face thecams;24 downwardly away; from the. tappets 18. I 1: j

The relatively light spring 20 now maintains the intake valve 19 in closed position, and the suction-created inthe tops of-the cylinders 11 byv the pistons 22 ,is suflicient for unseating the valves 19 and admitting 'of the intake of air to the tops of the'cylinders'11.' The downward movement of the piston 22 draws inaquantity of air through the intake opening 13, past the intake-valve 19, and through the passage 21 into'the top ofthe cy1inder 22. ,When the pistons 22 move,-upwardly =the intake valves :19 are closed and held closed 1by the springs 20whi1e the airforced upwardly. pastthe valve seats 38, unseating the adjacentvalve41 and admitting the air, under'compression to the chamber 38...; From thechamber.-38 the.- air is driven outwardly through the exhaust or outlet 44. It'will benoted that the outlet bore or nipple 44 is threaded to receive a pipe or the like so that'ajir under hompression may be transmitted to a" storage tank, or other suitablepoint for storage o'rlu'sefl; It will also be noted that a conventional crank'sha'ft'27 is employed wherein thepistons 22*move up and downinpairs in the cylinders 11.. The crank portions of the crank shaft 27 may be disposed at degree angles, .o1 .otherwise-soasto effect'the desired operation inpairs or in sequence as may be found desirable.

The compressor thus constructed may util spirit thereof and being restricted only by the scope of the following claims What is claimed is I V 1. In an air compressor, the combination with'a cylinder block, of a crankshaft, pistons in the cylinder of the block connected to the crank shaft, a crank casing for enclosing the crank shaft and supporting the cylinder block, means for turning the crank shaft,

spring actuated intake valves mounted in the block, a head mounted on the block having an air receiving. chamber communicating individually with the cylinders of the block, 1 said head having means for closing the exhaust ports of the block, and individual valves mounted in the head for admitting air under compression from the cylinders into said chamber. V w

2. In an air compressor, the combination with a cylinder block having intake and ex- 7 haust ports therein, of pistons in the cylinders of the block and a crank shaft connected to the pistons, a crank case supporting the cylinder block and enclosing the crank shaft and provided with legs for supporting the compressor, means for turning the crank shaft, a head mounted on the block and having a bottom wall adapted to close the exhaust ports of the block, valves mounted in the block for controlling the intake ports,

said head having an air receiving chamber,

therein with separate openings leading to the individual cylinders of the block, and spring pressed valves normally closing said openings and arranged to be individually opened by compression of air in the cylinders for admitting the air to said chamber, said head having an outlet nipple leading from said air receiving chamber.

3. In an air compressor, the combination with a cylinder block having cylinder bores therein and intake and exhaustports leading to said bores, a crank shaft, and pistons mounted in the cylinderbores connected to said crank shaft, of a head mounted on said block and having a compressed air chamber therein'with an outlet opening leading from said chamber, said head also having individual openings leading from said chamber to ual spring pressed valves mounted I in the head for normally closing said openings and adapted 'to be individually opened by air under pressure in the cylinder boresefor ad-' 7 mitting said air'to'said chamber in the head, 4." In an air compressor, thecombination therein and provided with intakeand exwith a cylinder block having cylinder bores haust ports leading to the 'cylinder bores, of I pistons in the cylinder bores, a crank shaft connected to the pistons, a crank shaft support arranged beneaththe block andhaving an oil reservoir for supplying lubricant to the crank shaft, suction operated intake' 7 valves for said intake ports, a head mounted on the cylinder block and having a lower wall adapted to close said exhaust ports of the block, saidehead also havinga compressed air chamber-and an'outlet opening therefor and provided with individual openings leading to the cylinder-bores of the 7 block, said head also having a valve casing in line with each'cylinder bore, a spring pressed valve mounted in each valve casing and adapted'tonormally close the adjacent opening from the compressed air chamber to the adjacent cylinder bore, and means for man I ually opening the intakevalves of the block for priming the compressor. V

5. In an air compressor, the combination with a cylinder block'having cylinder bores therein and provided with intake and exhaust ports leading to the cylinder bores, of pistons in the cylinder bores, a crank shaft connectedto the pistons, suction operated "intake valves for said intake ports, a head mounted on the cylinder block and having a" lower wall adapted to close said exhaustports of the block, said head also having a compressed air chamberand an outlet opening therefor and provided with individual openings leading to the cylinder bores of the block, said head also having a valve casingin line with each cylinder bore, a spring pressed valve mounted in each valve casing and adapted to normally closethe adjacent opening from the compressed air chamber to the adjacent cylinder bore, and means for manually opening the intake valves of the block for priming the compressor.

- EARL H. WHITE.

the cylinder bores in the block, and individv

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