Патент USA US2404305код для вставки
away as, 19346. ' "A. T. LQGUS . ~ 2,404,305 RADIAL RECIPROCATING PISTON DEVICE Filed Aug. 25, 1943 I v2 Sheets-Sheet ‘1 56 4/6’ 449 ' £2 23 ‘36 " 1/ -39 w f9 ‘ ‘ 416’, 114/ . 47%? [134M ' v ' _ Gav/Z02] ?eé [0 ‘w 4/»? - oar/36 July 16, 1946. 2,404,305 A. T. LOGUS RADIAL RECIPROCATING PISTON DEVICE Filed Aug. 23, 1945 2 Sheets-Sheet 2 f2: V922 Z4021’ "zigzag ' 7%?0 Z M 0 if A w I Patented July 16, 1946 2,404,305’ ' UNITED‘ "STATES PATENT OFFICE ; 2,404,305 ' ‘ RADIAL REGIPROCATING PISTON DEVICE Anthony Theo Logus, Cedar Rapids, iowa Application August 23, 1943, Serial No. 499,593‘ ~ , ‘5Claims. (01. 103-174) 2 . , Persons skilled in the pump art have long recog the pistons H and eccentric surfaces I‘! of shafts nized advantages in radially arranged reciprocat l8.- Each of the shafts I8 is journalled in the ing piston pumps. Not only do they have the ad housing l9, preferably by means of rollervbear vantages of relatively simple production, ease of ings 2i. ~ In any event, all of the bearings for the selling, and the ability to make use of all the 5 shafts i8 are identical. Each of the shafts i8 is highly developed art relating to reciprocating driven by a gear 22 which may be integral ‘with pistons but also their radial arrangement permits the shafts as shown or may be separately formed the use of common valve means located atythe and mounted thereon. In any event, the-ring por axis about which vtheyare radially arranged. tions 23 thereof including the teeth will be iden Furthermore, the radial arrangement itself is ad-‘ 10 tical for all of the shafts.‘ These gear rings have vantageous from the standpoint of compactness been shown integral with the gears 22 and shafts and because of avoiding any long crank shaft l8 but they couldibe‘ made separately if .pre with multitudinous bearings. . ferred. According tothe present invention, a radial , - The gears 22 mesh with a gear 24 which is car,- ’ reciprocating piston device is provided in which 15 ried‘ by and keyed to a shaft 26“ which is suitably j-ournalled. in housing 19 as by roller bearings 21,. obtained together with further advantages of It will be observed from Fig.‘ 3 that the gears 22 greater economy and simplicity of manufacture overlap slightly and hence they. are staggered as and highly ef?cient operation. One key factor in seen in Fig. 1. I . making manufacture economical is that there are 20 The gear 24 ‘and. the gears ‘22 have the same relatively few parts of different shapes, vmost of ' number of teeth and hence the shaft‘ 26 will rotate the parts for each cylinder being the same for all > in fire-‘determinedrelationship with the recipro of the cylinders or for at least halfof them. Fur eating; of the pistons H. The shaft 26 is pro the recognized advantages of such devices are thermore, all of the bearings are of small. di-' vided with an intake conduit 28 and a discharge‘ ameter, thus reducing both manufacturing cost, 25 conduit 29. These conduits are provided with and frictional moment or torque. ports which are separated by shaft portions 33 Additional objects and ‘advantages of the in which; serve asirotating valves to control thein vention will be apparent from the following‘ de let tolor‘discharge from. the cylinders l2. Each scription and from the drawings in which - r of theeylinders communicates with'the ‘bore I3 n Fig. 1, isma'longitudinal sectional'view of the 30 through a port’ 34. It will be obvious that each form of the invention chosen for illustration, port’ 34 will, communicate with the ports 3| being taken approximately on the line l--l of through ‘approximately one-half of the cycle and with the‘ port 32 through approximately the other half of the‘ cycle, the valve portions 33'serv‘ing Fig. 2 is a fragmentaryL'sectional view taken approximately on the line 2—2 of Fig.3; A 93. Cal to open the ports 34 ?rst to one of the ports 3! and 32v and then to'the other, in timed relation to Fig. 3 is a transverse sectional view of the structures shown in Figs. 1 and 2, taken approxi the reciprocation of the‘ various pistons. as each piston is moving‘ outwardly, its- port 34 mately'on a radial plane normal to the axis. A preferred form of the invention has been ' will communicate with the supply conduit 28 and chosen for illustration and description, in com 40 as" each‘ piston is moving inwardly,‘ it will come‘ pliance with section 4888 of the Revised Statutes, »munica'tewith the discharge conduit 23. but persons skilled in the art will readily perceive vFor cooling; the Cylinders l2, the cylinder block other means embodying the invention for accom , I4 is» preferably hollowed out between, the cyl plishing the same results, and the claims are . inders, as showil at 36 in Fig. 2, to forTm'a passage therefore intended to cover the invention as_ for cooling liquid‘. Of course this also conserves broadly as possible’, consistent with the‘prior art. metal. The adjacent portion of housing It prefer~ As clearly seen in Fig. 1, a plurality of pistons ably forms a jacket so that cooling liquid is sup H are provided, each operating in a" cylinder‘ I2, plied‘ to‘ the hollowed-out spaces by cooperation Fig.3; a n ‘ I ._ the cylinders [2 being radially disposed about I a bore 13 in a cylinder block l4.- The pistons may, if desired, be provided with suitable piston rings as lndicated. The pistons, their cylinders and, of course, their piston rings are identical. _ > between the cylinder‘ block 14 and the‘nousing I9. , The housing I9 is made’ llpof two portions 3-‘! ‘ and 38; The cylinder block ,llwis" secured to the portion 38 as seen in Fig. 2.‘ The portion 38' is provided with aninta-ke opening 39 to which a All of the pistons are reciprocated by identical supply‘ pipemay be secured. This‘ commune pitmansi [6 which form connecting rods between 65 cates with one of the hollowed-out spaces" 36. 2,404,305“ I -' " * ff ~ ' 3 Iclaim: -1. A radial reciprocating piston device compris All of the hollowed-out spaces 35 are connected ' by means of a passage4| formed in the housing ing a stationary cylinder block having a bore therethrough and having a plurality of cylinders portion 38. Diametrically opposite to the inlet opening 39 is a passage 42 which communicates ' radially disposed about a bore‘and having ports with the passage 43 in a cap 44. This cap is provided with an annular groove 45 which com through which they communicate with the bore, a drive shaft extending through the bore and having supply and discharge conduits therein, a gear fast on‘ thejdrive shaft, a.,gear meshing municates with the passage 43 and with a port 41 in shaft 28 which in turn communicates with supply conduit 28.‘ From the foregoing, it ‘is seen that the liquid 10 for which the ' illustrated device is intended gear in driving relationship, the phase of each 'piston in its reciprocatory cycle at a given in would flow through inlet 39 and through the pas.‘- ,_ sages 4| into contact with the various cylinders for cooling them and then it would flow through the passages 42, 43, 46 and port 41 intothe supply therewith for each of» the pistons,’ eccentric ‘means connecting eachyof the pistons with its . stant corresponding to its angular position about 15 the shaft, and valve means formed by the shaft ' 'in said bore connecting each of said ports with conduit 28 in the shaft 26 and then into» the successive expanding cylinders as the; pistons ‘' rv said supply‘ and‘ discharge passages consecu- ~ move outwardly therein. In the case of liquids‘it - , tively in correct timing with the reciprocation of the pistons; all of the pistons and cylinders, the is’ believed.~ that this will have all of the cooling effect necessary, although some people might be 20 eccentric therefor, the gear rings associated with the eccentrics and .the’bearings associated with surprised. that ‘it has a' net cooling effect. ‘Ifde the gear rings being identical. sired, still further cooling could be accomplished 2. "A radial reciprocating piston device com by connecting a cooling coil between the passage prising a cylinder'block having a bore there stand the annular groove 45. In the illustrated form, the discharge conduit 25 through and having‘a' plurality of cylinders ra dially disposed about the bore and having ports ‘ 2gfcommunicates through a port 48 with an an‘ j nular groove 49 which in turn communicates with - through which they communicate with the'bore, delivery conduit 5| to which may be secured a pipefor conductingthe liquid to any desired on the driveshaft, agearmeshingtherewith for p'Oint. 1 The shaft 26 is provided with a spline groove each of the pistons,‘ eccentric. means connecting‘ each of'rthe pistons with its gear in driving re 56 for coupling it to any other apparatus indriv lationship, the phase of'each piston in its, re a drive shaft concentric with the bore, a gear fast I ciprocatory cycle at agiven instant’corresp’ond- . ' ing relationship. ing to its angular position about theshaft and "Although thiSl apparatus can, be used as, a v vfluid ‘driven motor, it will probably most often I 35 valve means in said bore rotating with the shaft and connecting each of- said ports with supply anddischarge passages consecutively in correct timingwith the reciprocation of the pistons; all of the pistons and cylinders, the'eccentrics there-v for’, the gear. rings associated with the eccentrics; andthe bearings associated with the gear rings be used as a pump. In either event,'suitab1e rotary sealing means, should beprovided around the'shaft on both sides of the intake port 41 and the discharge port 48. L-type sealing range 51 have‘ been illustrated in one'instance' and _V, type’ ‘packing rings 58 inthe other. The L ty'peisealing rings have been illustrated as vfac ing the port 41. This is because it- is contem plated'to use a centrifugal'pump for supply ing, liquidto the illustrated pump under. a‘ low b'eingidenticall sealing'rings ".51 will probably ,be faced the other .. V; ' ‘ ~ ' ' through which they communicate with the bore, a (drive shaft extending through the boreviand created ‘by; the outwardly moving pistons, the v‘ ' radially disposed’about the-bore‘and having ports pressure. If. such centrifugal pump is, not used ~ and the liquid is. drawn in by the partial vacuum way;:1" . 3.- A radialreciprocating piston. device com prising a stationary cylinder block- liaving a bore therethrough’ and having a pluralityof cylinders having supply and¥dischargeconduits therein, 50 agear ‘fa'st‘ori the’ drive shaftfa gear meshing _ ' If. the device is to be used as a fluid motor, the ' operation-will preferably befreversed, therdriving therewith for each of the pistons, eccentric ‘means connecting each of the ‘pistonswithits'gear in , ?uid'being introduced at Blunder highpressure driving relationship, the phase of each, piston in' " and pushing half of the pistons outwardly, these its reciprocatory cycle at agiven instant cor pistons causing rotation‘ of the ,shafts l8_ and 55 responding ‘to': its angular position about the ' ultimately, of. the shaft 26jto; drive a. suitable shaft,‘ and valve means formedrby the shaft in load; the?uid'being expelledat low pressure by said bore connecting each of said ports with the pistons through the port 41., Y H I saidsupply and discharge passages consecutively ' The chief use of the device at present con templated is as. an oil pump. The oil will lubri 60 cate the pistons, and to some extent, by leakage, other working parts. Wherever necessary spe cial lubricating means may be provided. Excess oil seepage may drain out through aperture 62'. in correct timing 'with the reciprocation of the , 4; A radial reciprocating'piston,device com.-' prising a cylinder blockhaving a bore there; through and having a plurality of cylinders ra-' Plug Bl may be provided to ‘provide additional 65 dially disposed about the bore and communicat¥ ing therewith through ports, a drive shaft con lubricant, or for flushing purposes. ’ From‘the foregoing, it is seen that a very e?i; ‘ ' cient pump has been devised in which manufac ' turing costs are kept at a minimum by usingja centric with the bore, agear 'fast on thegdrive shaft, a gear meshin‘g'therewith for each of the pistons,-yeccentric means connecting each of the small number of diiferent, parts or inrothler'words 70 pistons with its :gear in driving relationship, the. having as many of the parts'as possible, the same , for all of the cylinders.‘ Operating e?‘iciency, is high ‘due to the use of a single, valve for all of the ' cylinders ‘ and due- to avoiding» large _ diameter ' bearings 1 phaseof each piston in its vre'icip'rocatorycycle. at a given instant corresponding to “its angular, position about theshaft and valve means in said. bore rotating with theishaft and connecting each 75 ofv said portspwith, supply and ‘discharge passages, 2,404,305 5 consecutively in correct timing with the recipro cation of the pistons. 5. A radial reciprocating piston pump includ surrounding the cylinder block and with it form ing conduit means supplying working fluid ad~ jacent to one of the cylinders and forming pas ing a cylinder block having a bore therethrough and a plurality of cylinders radially arranged around the bore and communicating with the sage means between the hollowed-out spaces ad jacent to all of the cylinders, an annular cham ber surrounding the shaft, communicating with bore through ports, a shaft extending through said passage, and communicating through a port the bore having supply and discharge conduits in the shaft with one of said conduits, said cas therein, each having openings axially aligned ing and the associated parts being so arranged with the ports and separated by portions of the 10 as to cause the work ?uid which is supplied to shaft having a valving ?t with the cylinder block the cylinders to circulate through the hollowed which substantially seals the ports on one side out spaces and cool said cylinders, and to pass thereof from the others, said cylinder block being directly between said spaces and the cylinders( hollowed out between the cylinders, and a casing ANTHONY THEO LOG-US.