Патент USA US2404095код для вставки
.Fu?y E69 1946. E. A. ROCKWELL ACCUMULATING APPARATUS Original‘ Filed Jan. 4. 1949 _ Tr 3% @N ,‘ 6%w 2,404,095 ' 2 sheets-sheet 2 Patented July 16,1946 = _ ' ' 2,404,095 UNITED STATES PATENT OFFICE 2,404,095 ACCUMULATING APPARATUS Edward A..,Rockwell, Cleveland, Ohio, assignor to The New Britain Machine Company, New .Britain, Conn, a'corporation of Connecticut Original application January 4, 1940, Serial No. 312,356. Divided ‘and this application October 2, 1943, Serial‘No. 504,807 9 Claims. (01. 138——,30) . 1 My invention relates particularly to accumulators for accumulating ?uid pressures, adapted to be used for applying pressures for any desired purpose, as for instance in connection with auto- 2 a cylinder I3 so as to force to the left in Figs. 2 and 3, a piston I4 which is mounted by. means of a screw I5 on a plunger 16 between which piston I4 and plunger I6 there is a chevron pack mobiles, airplanes, railway cars, mine locomo- 5 ing I1, of suitable material. A snap ring- stop I8 tives, etc. for the plunger i6 is located at the left of the The object of myinvention is to provide an cylinder I3, which latter is screwpthreaded, and accumulator applicable for any ‘desired purpose provided with a pair of- ears I9 and 20, on the split in which ?uid pressures may be accumulated in end 0f~said cylinder I3, secured together ‘witha an advantageous manner. A further objectis to 10 bolt 2 I, for screw-threaded attachment. to a pm Vide an accumulator adapted to Supply a hyspring casing 22, so as to hold the screw-threaded draulic ?uid under .a constant pressure. Anend ‘of the cylinder I3 ?xedly on the spring cas other object is to provide an accumulator which ing-.22. Also, above and opposite tothe ears I9 is charged up to a desired maximum previously by ‘and 20' there is a lug 22a:having a-bolt 22b-there an intermittently acting pump, and so construct- 15 in for supporting "an end of the accumulator from ed as to maintain the hydraulic fluid under high the automobile chassis in anydesired ‘way. ‘The pressures. Another object is to provide an acsaid plunger I5 rests against .the‘face of a spring cumulatcr of an improved form which is compact retainer. plate 23. The springicasing 22 also has and which is provided with a spring-pressed aca split ring stop 24 for the retainer plate 23, which cumulating means. Further objects of .myinven- 20 is also provided with‘ an internal sleeve 25‘ to act tic-n will appear from the detailed description of as -a guide for a plurality of Belleville spring the same hereinafter, . washers 26 which are merely dished rings of This application is adivision of my application Ser.,No. 312,356, ?led January 4,1940, nowPatent spring steel. As shown in the drawings,‘ the said rings .26 are located so that the adjacent rings No. 2,331,800, dated October 12, 194.3, upon Sys- 25 have their dished portions extendingin opposite tem for controlling the application of power. directions, said rings being thus carried in an an While my invention. is capable of embodiment nular‘chamber 21 between the.casing.22..and the in many different forms, for the purpose of illusguide .25 at intervals along the chamber 21.. Be tration I have shown only one form thereof in tween groups of the spring washers ~29 there the accompanying drawings, in which 30 are ring-shaped blocks .28 to aid in. maintaining Fig. 1 is a diagrammatic elevation of the accu~ the alignment of the spring. washersZE. The left mulator shown as being associated with a supply end of the chamber 21 is . closed by. a screw reservoir, as well as with an intermittently acting electrically driven pumpfor charging the ac- threaded cap 29, having adjacent to a split .end of the cap 29 a pair of ears 30 .and 3|, screw¢ cumulator; Figs. 2 and .3 together constitute a vertical sec- tion of the accumulator shown therein; 35 threaded to the spring casing ZZ-Yand clamped ‘to gether by a bolt‘32, so as to .hold the ‘cap 29 tightly on the cylinder .22. Alsoyabove and op Fig. 4 is an end elevation ofthe same, and posits to the ears .30 and M there is a lug 32a ‘Fig. 5 is a section taken on the line 4-—4 of having a bolt 32b therein for supporting the end Fig. 2. 40 of the accumulator from the automobile chassis In accordance with my invention I have proin any desired way. Bolted to the left race of videcl therein areservoir gravity-feed tank I havthe cap 29 there is .a cylindrical switch housing ing a ?ller opening 2, an inlet 3 for the returned 34, which extends inwardlywithin the washer26, discharge liquid, which may be a hydraulicbrake the same having a' removable screw-plug 35 to ?uid or any other suitable liquidand-a removable 45 permit access to the switch terminals for leads cylindrical screen ?lter 4 located over an out36 and 31 leading to‘ the switch, terminals. A let or‘supply opening 5 which leads by a pipe 6, cover plate .38 is boltedtothe switch ~housing34. having a branch inlet pipe 6a for returned disIn said cover plate 38 there is a sleeve .39 ‘having charged liquid, to arotary pump ‘I which may, a screw-threaded cap 49 to hold in place ‘a sleeve for example, be any desired type ofgear pump. to .4I vwhich has a screw 42 adapted to bereceived This is driven by an electric motor 8. in a slot 43 in the sleeve 39. Said screw 42 also Pressure liquid is thus suppliedfrom the pump fastens in position an adjustable switch support ‘I by a pipe 9 to. an inlet- II! on a pressure accu~ ing .rod 44 provided with ascreW-threaded hole mulator Ii. The pressure ?uid from the pump 45 toaid in the removal thereof. Slidably mount 8 is thence received directly in a chamber I2_in c5 ed ,on the rod 44 thereis a copper plate45 which 2,404,095 3 operates as a starting switch in the initial starting or setting of the switch apparatus, said plate 46 being normally held in its farthest position to the left by a light spring 4‘I. The other end of said spring 4‘! abuts against a nut 48 on a sleeve 49 carried on the rod 44, said nut 48 having a wash er 50 spacing it from an insulated ring 5| car ried on the sleeve 49 and which supports two rod shaped terminals 52 and 53 connected to said leads 31 and 35 respectively. The copper plate 46 4 threaded into the end- of the cylinder I3. The lower end of the cage 93 has a slotted opening 94 to permit removal thereof, the same being covered with a screw-threaded apertured dust cap 95. Above the cage 93 there is a screw sleeve 95a, the adjusted position of the sleeve being maintained by a screw 96 cooperating with a series of slots 91 in said sleeve. This adjustment of the sleeve 9511 also permits the tightening of an annular seal 98 located above a Washer 99, the seal 98 is designed to initially close the circuit manually being supported on the other face thereof by a between the said two rods 52 and 53. The right spacing member I00 which rests against an aper hand end of the rods 52 and 53 have screw tured sleeve I0l within which the valve member threaded thereto conducting plates 54 and 55 9| slides. A check valve I02 is carried within which are designed, in the automatic operation 15 the valve member 'BI and is held on its seat by a of the apparatus, to close the circuit with a cop spring I03. The pressure liquid which is thus per disk 56 carried on a circuit-breaker sleeve supplied by the force from the piston I4 is dis 51 slidable within the sleeve 49 and normally held. charged past the check valve I02 and thence to a towards the right in Figs. 2 and 3 by a spring discharge port I04 leading to a pipe I05, this dis 58 to close the said circuit. It will be noted that 20 charged pressure being a uniform pressure, pref the lead 35 is connected to one terminal 59 at one side of the motor 8 and the other lead 31 leads to any suitable source of electrical energy, as, for example, a battery, not shown, which latter is also connected by a lead 69 to a terminal 25 Iii on said motor. The right-hand end of the rod era-bly of about 500 lbs. per square inch. An other discharge pipe I06 conveys the pressure liq uid at this same pressure from the discharge port I04 to any desired part to be moved, of an automobile or any other apparatus. In the operation of the accumulator, it will be understood that the same is supplied from the of a shell 63 which is formed on the end of the supply reservoir I which conveys the liquid by circuit breaker sleeve 51. This shell 63 is adapt the pipe 6 to the rotary pump 1, driven by the ed to be moved for the automatic making and 30 electric motor 8. The liquid, placed under pres— breaking of the pumping circuit by a ring ‘64 sure by the pump ‘I, is delivered by the pipe 9 mounted on a cylindrical member 55 carrying to the inlet I0 of the accumulator II so that any within the same a snap action circuit breaking desired pressure is maintained thereby. Prefer member 65, the inner left portion of which rests ably, however, the accumulator is so constructed against a spring housing 61, having a spring 63 I as to maintain a pressure, for example, of approx Within the same carried on the outside of a sleeve imately 1000 lbs. per square inch. The liquid, 69 which overlies a rod ‘I0, having a headed screw under pressure, received in the inlet I0 from the ‘II and a washer 1Ia supporting near one end pump ‘I forces the piston I4 to the left, in Figs. thereof'a washer ‘I2 held in place by a snap ring 2 and 3, so as to place the spring Washers 26 12a to retain said spring 69 in place. , 40 under compression. This continues until the cir The said snap action circuit breaking member cuit breaking member 66 passes beneath the roll 66 cooperates with two bell-crank levers ‘I3 and ers ‘I5 and T6 so as to cause the cylindrical mem ‘I4 having rollers ‘I5 and ‘I6 thereon, which lat ber 65 to move suddenly towards the left, thus ter are forced against the face of the cylindrical causing the circuit breaker sleeve 5‘! to break the member 65 by springs ‘I‘I, resting against exten .L. LI contact between the copper disk 56 and the con sions ‘IS on arms of the bell-crank levers ‘I3 and ducting plates 54 and 55, so as to stop the motor ‘I4 which are carried by means of pivots 89. The 8 and the pump 1. This condition of the cir arms ‘I9 form a part'of the switch housing 34. cuit, including the wires 36, 31, 59, 69 and BI, will The rod ‘I9, after passing through the snap ac— continue until sufficient liquid has passed from tion member 66, at the right thereof, carries a the accumulator through the passageway 89, past spring sleeve 8| having therein a spring .82 sup the check valve I02 until the circuit breaking ported on a sleeve member 83 around the rod ‘I0, member 66 has been moved suddenly to the right 44 has a stop 62 cooperating with the interior which latter has a shoulder 94 supporting an end washer 85 to act as a retainer for said spring 82. The right-hand end of the rod ‘III has a screw thread 86 which is secured within the spring re tainer plate 23 by means of nuts 87. Notches 88 in the face of the cylindrical member 65 also cooperate with said rollers ‘I5 and ‘I5 so as to hand side of the rollers ‘I5 and ‘I6 so as to permit the spring 58 to again complete the motor cir cuit between the copper disk 56 and the con ducting, plates 54 and 55, whereupon the pump ‘I will again charge the accumulator. In this way a constant pressure is maintained in the ac cumulator II, irrespective of the extent of with retain the pump circuit broken when the ‘pres drawal of the liquid therefrom through the pas saxgeway 89. In the initial starting of the ac sure-liquid line is broken, that is to say when the piston I4 is at the extreme right-hand end of cumulator it will be understood that the copper plate 46 is arranged to be moved manually in op the cylinder I3. However, when the said liquid position to the spring 4'! in order to complete the line is complete and the pump motor has been started manually by moving the copper plate 46 to 65 circuit between the two rods 52 and 53. It will the right, the pump will be started to supply the be understood, also, that the liquid which has pressure liquid therefrom to the cylinder I2 and been supplied under pressure from the pipes I05 the piston I4 will move to the left, accordingly, and 106, after having been used or released from until the snap action circuit breaker 65 breaks being under pressure, may return by the inlet 3 the circuit when the desired pressure has been to the reservoir I or may be returned to the pump ‘I by means of the pipe to. accumulated, so that, thus, liquid is supplied from the cylinder I2 through a port 89 and thence While I have described my invention above in through radial ports 90 in a check valve sleeve 9| detail I wish it to be understood that many which is normally kept in elevated position by changes may be made therein without departing means of a spring 92 carried in a cage 93 screw 75 ‘from the spirit of the same. 2,404,095 5 I claim: 1. An accumulator for a pressure ?uid com prising, a movable wall adapted to be moved by the accumulation of a pressure ?uid against the same, a series of dished members adapted to be compressed by the movement of said wall and when released to move said wall in the opposite direction so as to discharge said ?uid under pres sure, a tubular member attached to the wall in opposite directions, adapted to be compressed by the movement of said wall and when released to move said wall in the opposite direction so as to discharge said ?uid under pressure, and a stationary immovable spring casing against which the outside portions of said rings are guided. 6. An accumulator for a pressure ?uid com prising, a slidable piston adapted to be moved by the accumulation of pressure ?uid against the around which the dished members are carried 10 same, a series of dished rings, normally dished in opposite directions, adapted to be compressed by and an outer stationary tublular member in which the movement of said slidable piston and when the dished members are externally guided. released to move said piston in the opposite direc 2. An accumulator for a pressure ?uid compris tion so as to discharge said ?uid under pressure, ing, a movable wall adapted to be moved by the accumulation of a pressure ?uid against the same, 15 a stationary immovable spring casing against which the outside portions of said rings are a series of dished members adapted to be com guided, and a carrier for the dished rings asso pressed by the movement of said wall and when ciated with the slidable piston. released to move said wall in the opposite direc 7. An accumulator for a pressure ?uid compris tion so as to discharge said ?uid under pres sure, a tubular member attached to the wall 20 ing, a piston adapted to be moved by the accu mulation of pressure ?uid against the same, a ' around which the dished members are carried, series of dished rings, normally dished in oppo an outer stationary tubular member in which site directions, adapted to be compressed by the the dished members are guided, and means for movement of said piston and when released to maintaining the axial positions of the rings com prising a spacing ring guided between the said 25 move said piston in the opposite direction so as tubular members and located so as to separate to discharge said ?uid under pressure, a station the successive dished members. ary immovable spring casing against which the outside portions of said rings are guided, and a plunger associated with said piston around which - 3. An accumulator for a pressure ?uid com prising, a movable wall adapted to be moved by the accumulation of a pressure ?uid against 30 said rings are carried. 8. Any accumulator for a pressure ?uid com the same, a series of dished members adapted prising, a piston adapted to be moved by the to be compressed by the movement of said wall accumulation of a pressure ?uid against the same, and when released to move said wall in the oppo a series of dished members, normally dished in site direction so as to discharge said ?uid under pressure, a tubular member attached to the wall 35 opposite directions, adapted to be compressed by the movement of said piston and when released around which the dished members are carried, to move said piston in the opposite direction so an outer stationary tubular member in which as to discharge said ?uid under pressure, a sta the dished members are guided, and a stationary tionary immovable spring casing against which extension tube for receiving the dished members, connected to the outer tube and slidable in the 40 the outside portions of said members are guided, a plunger associated with said piston around inner tube. which said members are carried, and spacing 4. An accumulator for a pressure ?uid com alignment members located between successive prising, a movable wall adapted to be moved by sets of members. the accumulation of a pressure ?uid against the 45 9. An accumulator for a pressure ?uid compris same, a series of dished members adapted to be ing, a piston adapted to be moved by the accu compressed by the movement of said wall and mulation of pressure ?uid against the same, a when released to move said wall in the opposite series of dished rings, normally dished in oppo direction so as to discharge said ?uid under pres sure, a tubular member attached to the wall 50 site directions, adapted to be compressed by the movement of said piston and when released to around which the dished members are carried, move said piston in the opposite direction so as an outer stationary tubular member in which the to discharge said ?uid under pressure, a sta dished members are guided, a spacing ring guided tionary immovable spring casing against which between the said tubular members and located the outside portions of said members are guided, so as to separate the successive dished members, and a stationary‘ extension tube for receiving the 55 a plunger associated with said piston around which said rings are supported, and means for dished members, connected to the outer tube and maintaining the axial positions of the rings com slidable in the inner tube. 5. An accumulator for a pressure ?uid com prising, a movable wall adapted to be moved by the accumulation of a pressure ?uid against the 60 same, a series of dished rings, normally dished prising spacing alignment members located be tween successive sets of rings. EDWARD A. ROCKWELL.