US1865105A - Fluid driving device for actuating mechanisms having an initial idle stroke - Google Patents

Fluid driving device for actuating mechanisms having an initial idle stroke Download PDF

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Publication number
US1865105A
US1865105A US442438A US44243830A US1865105A US 1865105 A US1865105 A US 1865105A US 442438 A US442438 A US 442438A US 44243830 A US44243830 A US 44243830A US 1865105 A US1865105 A US 1865105A
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United States
Prior art keywords
cylinder
piston
small
fluid
rod
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Expired - Lifetime
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US442438A
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English (en)
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Houplain Georges
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FREINS HOUPLAIN SOC D
FREINS HOUPLAIN Ste
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FREINS HOUPLAIN SOC D
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/38—Other control devices or valves characterised by definite functions for quick take-up and heavy braking, e.g. with auxiliary reservoir for taking-up slack
    • B60T15/40—Other control devices or valves characterised by definite functions for quick take-up and heavy braking, e.g. with auxiliary reservoir for taking-up slack with separate take-up and applying cylinders

Definitions

  • said apparatus 1s caused to effectively work only after a more or less important idle course, and after the entire play has been taken up; said apparatus is so devised that the consumption of driving fluid is as much as possible independent of said idle course in order to reduce the consumption ofdriving energy, when the latter is supplied by a compressor and stored in the form of compressed air in a tank, or the amplitude of the movement required from the operator when he acts upon a hand or foot control.
  • the device comprises a fixed cylinder of large diameter. a piston sliding in this cylinder and intended .to be connected to the apparatus to be driven, a movable cylinder'of smalldiameter, rigid with the large piston and having one of its ends open, a small piston sliding in thismovable cylinder,'springs pushing the small and the large pistons respectively towards the open end of the small cylinder and-'towardsthe corresponding bottom of the large cylinder,
  • this bottom having an'opening for the admission and issue of .the driving fluid, the open end of the small cylinder being adapted to fit in a'fluid-tight manner on the bottom of the largecylinder about the saidopening, and ratchetmeans through which the large piston drives the small piston when it moves away from the said bottom of the large cylinder, but is not-driven in the said direction by the small piston.
  • the quantity of fluid for moving the small piston- is-always small whatever may be the length of the idle stroke due to the play of the apparatus to be driven
  • Fig. 3 is a section, on an enlargedscale, of
  • Fig. 4 is a view similar to Fig. 3 showing a modification.
  • Fig. 5 is a longitudinal section diagrammatically illustrating a control device for the brakes of motor cars.
  • the brake cylinder 1 communicates with the supply of compressed air through the orifice 2; to the main piston 3 is secured an auxiliary cylinder 1, of small diameter, provided with an orifice 5 arranged opposite the orifice 2; a spring 6 pushes back the piston 3 so as to press the end of the cylinder 4. upon a seat 7 surrounding the orifice 2 and to thus prevent compressed air from entering the space 8 of the brake cylinder 1.
  • a piston 9 can slide in the aux iliary cylinder 4 in 0 position to the action of a springlO.
  • On tlle piston rod 11 is secured a fiat member 12 provided with teeth 13 capable of gearing with the corresponding teeth 14 of'levers or pawls 15 which are pivoted at 16 on the cylinder 4 and constantlypulled towards each other by springs. 18.
  • the rod 11 terminates in a small cross head 17 serving to actuate the control lever ofv the brake rigging.
  • the levers 15 press, "through their end 20, upon inclines 21 integral with thecylinder 1 when the auxiliary cylinder 4 rigid with the piston 3 is in the position of rest, so that their teeth 14 are then released from theteeth 13 of the member 12 (Fig. 1).
  • the piston 3 moves forward, driving the auxiliary cylinder t and the levers 15, the latter will be released from the inclines 21 and will come in engagement with the teeth of the member 12 which they will then rigidly drive.
  • a channel 22 causes the inner space 23 of the auxiliary cylinder 4 and the inner space 8
  • the operation is as follows: The compressed air ente'rs through the orifices 2 and 5, acts-upon the piston 9 which, through its rod 11, member 12 and cross head 17, acruates the brake rigging and brings the brake shoes in contact with the wheels.
  • the compressed air is exhausted from the chamber 8 and the piston 3 comes back to its position of rest under the action of the spring 6 driving the auxiliary cylinder and the entire brake rigging; the ends 20 of the levers 15 come in engagement with the inclines 21, so that these levers are released from the teeth 13 of the member 12.
  • the spring 10 then brings back the piston 9 to its original position.
  • the communication between the chamber 23 of the auxiliary cylinder 4 and the chamber 8 of the brake cylinder 1 could also take place through opening of a small spring valve 25 mounted on the bottom of the cylinder 4 and opening only when the pressure in this cylinder would have sufficiently increased for moving the piston 9 and bringing the brake shoes in contact with the wheels.
  • a valve 24 placed on the orifice 5 will allow compressed air to enter the chamber 23 of the auxiliary cylinder and will prevent it from issuing therefrom.
  • the rod of this valve can be provided with an extension which will tit upon the seat 7 when the main piston 2 will have mturned backwards, which will cause the said valve to open and will then allow the return of the auxiliary piston.
  • the apparatus illustrated in Fig. 5 and adapted to actuate the brakes of a motor car comprises a fixed cylinder 1', of large diameter, in which slides a piston 3 rigid with a movable cylinder 4, of small diameter, the open end 5 of which presses under the action of a powerful spring 6', against a seat 7 provided on the bottom 1!! of the cylinder 1' about the inlet and outlet opening 2' for the fluid under pressure.
  • a flange 31 provided with recesses in which are arranged balls 32, adapted to cooperate with a conical surface 33 provided in the cylinder 4 for actuating the rod 11' through the cylinder 4' in the direction of the arrow 7'.
  • the flange 31 has a circular shoulder 34 adapted to cooperate with a cap 35 secured on the cylinder 4' for serving to actuate the flange through the cylindcr in a direction reverse. to that indicated by the arrow f.
  • springs 36 are secured on the flange 31 andarranged for abutting against a J.
  • the driving fluid is oil enclosed in the space comprised. on the one hand, between the bottom 1 1. of
  • the bottom 1a of the large cylinder is further provided. besides the seat 7, with an opening 41 which is normally closed by a valve 42- arranged for opening inwardly of the cylinder 1 in opposition to the action of a returning spring :43.
  • the conical surface 33 immediately comes in engagement with the balls 32, and the latter, wedged between this surface and the rod 11, drive the said rod, determining, consequently, the application of the brakes.
  • the braking power which can thus be obtained depends on the ratio of the diameters of the cylinder 1 and of the cylinder 39, ratio which can be chosen as large as desirable.
  • the initial displacement of the piston 38 serving to push back the piston 9' until the entire play is taken up, depends on the ratio of the diameters of the cylinder 39 and cylinder 4', and this ratio can be so chosen as to render this initial displacement as small as desirable.
  • the springs-6 and 10' act for returning the members to their initial position: the piston 3' is first returned by the action of the spring 6, with the cylinder 4'; the cap 35 draws the flange 31 along with it, and the piston 9 is returned through. the medium of the spring 10 with a certain lag by returning the brake rigging to the position of rest. 'When the cylinder 4' has come back to the position of rest, the springs 36 pressed against the abutment 37, retain the flange 31 in opposition to the frictional driving stress resulting from the continuation of the return movement of the rod 11, so that the balls 32 do not wedge against the surface 33 and do not prevent this return movement.
  • Such a device is capable of receiving multiple applications and, among others, it can be used as a brake control device; it can serve to constitute a jack, the platform of which will first rapidly come under the load to be lifted, the lifting strain taking place but subsequently; finally, it can be used every time the apparatus to be driven gives rise to an idle stroke or to a small resistance before opposing a great resistance.
  • the device in accordance with the invention is applicable quite as well, with modifications of detail, to vacuum brakes, and to all kinds of brakes actuated by a fluid. 7
  • Fluid driving device comprising a fixed cylinder of large diameter, a piston sliding in this cylinder, a movable cylinder of small diameter, rigid with the said piston and having one of its ends open, asmall piston sliding in this movable cylinder and adapted to be connected to the apparatus to be driven, springs pushing the small and the large pistons respectively towards the open end of the small cylinderjand towards the corresponding bottom of the large cylinder, this bottom having an opening for the admission and issue of the driving fluid, the open end-of the small cylinder being adapted to fit in a fluid-tight manner on the bottom of the large cylinder.
  • Fluid driving device comprising a fixed cylinder of large diameter, a piston sliding in this cylinder, a movable cylinder of small diameter, rigid with the said piston and having one of its ends open, a small piston sliding in this movable cylinder and adapted to of the small cylinder being adapted to fit in r a fluid-tight manner on the bottom of the large cylinder about the said opening, ratchet means through which the large piston drives the small piston when it moves away from the said bottom of the large cylinder, a fixed cylinder having an intermediate diameter between those of the two first cylinders and communicating with the said opening of the first-mentioned cylinder, a piston in this cylinder of intermediate diameter, and foot control means for moving the last-mentioned piston.
  • Fluid driving device comprising a fixed cylinder of large diameter, a piston sliding in this cylinder, a movable cylinder of small diameter, rigid with said piston, a small piston sliding in.
  • this movable cylinder and adapted to be connected to the apparatus to be driven the cylinder of small diameter and that of large diameter being each provided with an orifice for the admission of the driving fluid, a spring valve for closing the orifice of the large cylinder and ratchet means through which the large piston drives the small piston as soon as it moves away from the bottom of the large cylinder.
  • Fluid driving device comprising a fixed cylinder of large diameter, a piston sliding in this cylinder, a movable cylinder of small diameter, rigid with said piston, a small piston sliding in this movable cylinder and adapted to be connected to the apparatus to be driven, the cylinder of small diameter and that of large diameter being each provided with an orifice for the admission of the driving fluid, a spring valve for closing the orifice of the large cylinder, and.
  • ratchet means through which the large piston drives the small piston as soon as the same moves away from the bottom of the large cylinder, these ratchet means comprising a rod rigid with the small piston, a flange frictionally mounted on the said rod, abutments limiting the movements of the said flange relatively to the said small cylinder, balls maintained in the said flange against the rod rigid with the small piston, the small cylinder having a conical surface adapted to engage the said balls and to press them against the said rod as soon as the small cylinder moves away from the bottom of the large cylinder.
  • Fluid driving device comprising a fixed cylinder of large diameter, a piston sliding in this cylinder, a movable cylinder of small diameter rigid with said piston, a small piston sliding in this movable cylinder and adapted to be connected to the apparatus to be driven, the cylinder of small diameter and that of large diameter being each provided with an orifice for the admission of the driving fluid, a spring valve adapted to close the orifice of the large cylinder and ratchet means through which the large piston drives the small piston as soon as the same moves away from the bottom of the large cylinder, these ratchet means comprising a rod rigid with the small piston, a flange frictionally mounted on the said rod, abutments limiting the movements of the said flange relatively to the said small cylinder, balls maintained in the said flange against the rod rigid with the small piston, the small cylinder having a conical surface adapted to engage the said balls and to press them against the said rod as soon as the small cylinder moves away from the bottom of the large cylinder and means for diseng
US442438A 1929-11-02 1930-04-07 Fluid driving device for actuating mechanisms having an initial idle stroke Expired - Lifetime US1865105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR571042X 1929-11-02

Publications (1)

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US1865105A true US1865105A (en) 1932-06-28

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US (1) US1865105A (de)
DE (1) DE571042C (de)
FR (1) FR700795A (de)
GB (1) GB363632A (de)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453785A (en) * 1946-10-18 1948-11-16 Chrysler Corp Holding apparatus with piston through which pressure fluid is passed
US2476629A (en) * 1945-05-17 1949-07-19 Seal Craft Inc Power-operated hydraulic sealing and crimping machine
US2531907A (en) * 1946-02-01 1950-11-28 Lewis E Daubenmeyer Pressure fluid servomotor
US2568228A (en) * 1947-10-31 1951-09-18 Harry D Forse Two stage fluid pressure cylinder
US2597126A (en) * 1949-08-17 1952-05-20 Allis Chalmers Mfg Co Circuit breaker with blast valve motor assisting the contact motor
US2599377A (en) * 1948-03-24 1952-06-03 Ivan A Farnworth Automatic travel adjuster for air brake pistons
US2609953A (en) * 1951-05-07 1952-09-09 Arthur G Schramm Trailer loader
US2612871A (en) * 1945-04-11 1952-10-07 Nat Pneumatic Co Inc Fluid pressure-operated piston assembly
US2635618A (en) * 1948-11-16 1953-04-21 Moore Products Co Pneumatic control apparatus
US2638750A (en) * 1950-03-24 1953-05-19 Borg Warner Transmission brake servomotor
US2675678A (en) * 1954-04-20 english
US2740859A (en) * 1953-12-28 1956-04-03 Gen Electric Fluid actuated circuit breaker operating mechanism
US2769307A (en) * 1950-07-14 1956-11-06 Studebaker Packard Corp Hydraulically operated servo-motor
US2794111A (en) * 1952-05-05 1957-05-28 Taylor Winfield Corp Actuating mechanism, particularyl for strip weldiers
US2815642A (en) * 1955-10-21 1957-12-10 John F Sherwood Devices for utilizing the thermal expansion of wax
US2829498A (en) * 1956-06-18 1958-04-08 Roper Engineering Company Hydraulic pressure intensifying apparatus
US2863290A (en) * 1952-04-26 1958-12-09 Verderber Joseph Pneumatic clamping device with mechanical advantage
US2885049A (en) * 1957-11-26 1959-05-05 Int Harvester Co Hydraulic fluid pressure operated device for clutches
US2928246A (en) * 1957-11-19 1960-03-15 Peter E Sjodin Hydraulic system
US2938212A (en) * 1953-04-20 1960-05-31 Inv S Man Corp Pneumatic tacker
US2943327A (en) * 1957-03-08 1960-07-05 Senco Products Stapling plier
US2949080A (en) * 1958-01-20 1960-08-16 Gen Dynamics Corp Pressure generator
DE1256553B (de) * 1964-09-26 1967-12-14 Teves Kg Alfred Radzylinder, insbesondere fuer hydraulisch oder pneumatisch betaetigte Scheibenbremsanlagen
US3812935A (en) * 1973-01-15 1974-05-28 Steel Corp Disc brake wear take up device
FR2730024A1 (fr) * 1995-01-31 1996-08-02 Alliedsignal Europ Services Frein a disque a absorption reduite
WO2006047113A1 (en) * 2004-10-22 2006-05-04 Wabtec Holding Corporation Adaptation of tmx for axle motion iii truck application
US20060091070A1 (en) * 2004-10-28 2006-05-04 Aufderheide Ronald C Filters made from chemical binders and microspheres
US20210046915A1 (en) * 2018-03-15 2021-02-18 Haldex Brake Products Corporation Two stage brake actuation system and method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088371B (de) * 1954-09-30 1960-09-01 Maschf Augsburg Nuernberg Ag Handbremsanlage fuer Kraftfahrzeuge
US2939553A (en) * 1957-06-03 1960-06-07 Bendix Westinghouse Automotive Automatically adjusted actuator
FR2136847B1 (de) * 1971-05-07 1975-06-06 Westinghouse Freins & Signaux
US3837443A (en) * 1973-12-10 1974-09-24 Westinghouse Air Brake Co Slack adjuster for hydro-pneumatic brake unit having automatic air bleed

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675678A (en) * 1954-04-20 english
US2612871A (en) * 1945-04-11 1952-10-07 Nat Pneumatic Co Inc Fluid pressure-operated piston assembly
US2476629A (en) * 1945-05-17 1949-07-19 Seal Craft Inc Power-operated hydraulic sealing and crimping machine
US2531907A (en) * 1946-02-01 1950-11-28 Lewis E Daubenmeyer Pressure fluid servomotor
US2453785A (en) * 1946-10-18 1948-11-16 Chrysler Corp Holding apparatus with piston through which pressure fluid is passed
US2568228A (en) * 1947-10-31 1951-09-18 Harry D Forse Two stage fluid pressure cylinder
US2599377A (en) * 1948-03-24 1952-06-03 Ivan A Farnworth Automatic travel adjuster for air brake pistons
US2635618A (en) * 1948-11-16 1953-04-21 Moore Products Co Pneumatic control apparatus
US2597126A (en) * 1949-08-17 1952-05-20 Allis Chalmers Mfg Co Circuit breaker with blast valve motor assisting the contact motor
US2638750A (en) * 1950-03-24 1953-05-19 Borg Warner Transmission brake servomotor
US2769307A (en) * 1950-07-14 1956-11-06 Studebaker Packard Corp Hydraulically operated servo-motor
US2609953A (en) * 1951-05-07 1952-09-09 Arthur G Schramm Trailer loader
US2863290A (en) * 1952-04-26 1958-12-09 Verderber Joseph Pneumatic clamping device with mechanical advantage
US2794111A (en) * 1952-05-05 1957-05-28 Taylor Winfield Corp Actuating mechanism, particularyl for strip weldiers
US2938212A (en) * 1953-04-20 1960-05-31 Inv S Man Corp Pneumatic tacker
US2740859A (en) * 1953-12-28 1956-04-03 Gen Electric Fluid actuated circuit breaker operating mechanism
US2815642A (en) * 1955-10-21 1957-12-10 John F Sherwood Devices for utilizing the thermal expansion of wax
US2829498A (en) * 1956-06-18 1958-04-08 Roper Engineering Company Hydraulic pressure intensifying apparatus
US2943327A (en) * 1957-03-08 1960-07-05 Senco Products Stapling plier
US2928246A (en) * 1957-11-19 1960-03-15 Peter E Sjodin Hydraulic system
US2885049A (en) * 1957-11-26 1959-05-05 Int Harvester Co Hydraulic fluid pressure operated device for clutches
US2949080A (en) * 1958-01-20 1960-08-16 Gen Dynamics Corp Pressure generator
DE1256553B (de) * 1964-09-26 1967-12-14 Teves Kg Alfred Radzylinder, insbesondere fuer hydraulisch oder pneumatisch betaetigte Scheibenbremsanlagen
US3812935A (en) * 1973-01-15 1974-05-28 Steel Corp Disc brake wear take up device
FR2730024A1 (fr) * 1995-01-31 1996-08-02 Alliedsignal Europ Services Frein a disque a absorption reduite
EP0725226A1 (de) * 1995-01-31 1996-08-07 Alliedsignal Europe Services Techniques Scheibenbremse mit verringerter Absorption
WO2006047113A1 (en) * 2004-10-22 2006-05-04 Wabtec Holding Corporation Adaptation of tmx for axle motion iii truck application
GB2433562A (en) * 2004-10-22 2007-06-27 Wabtec Holding Corp Adaptation of tmx for axle motion iii truck application
GB2433562B (en) * 2004-10-22 2008-11-12 Wabtec Holding Corp Adaptation of tmx for axle motion iii truck application
AU2005299946B2 (en) * 2004-10-22 2009-02-05 Wabtec Holding Corporation Adaptation of TMX for axle motion III truck application
US20060091070A1 (en) * 2004-10-28 2006-05-04 Aufderheide Ronald C Filters made from chemical binders and microspheres
US20210046915A1 (en) * 2018-03-15 2021-02-18 Haldex Brake Products Corporation Two stage brake actuation system and method

Also Published As

Publication number Publication date
DE571042C (de) 1933-02-23
GB363632A (en) 1931-12-16
FR700795A (fr) 1931-03-06

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