GB944687A - Fluid pressure operation of devices such as printing hammers - Google Patents

Fluid pressure operation of devices such as printing hammers

Info

Publication number
GB944687A
GB944687A GB28535/62A GB2853562A GB944687A GB 944687 A GB944687 A GB 944687A GB 28535/62 A GB28535/62 A GB 28535/62A GB 2853562 A GB2853562 A GB 2853562A GB 944687 A GB944687 A GB 944687A
Authority
GB
United Kingdom
Prior art keywords
piston
hammer
pressure
chamber
printing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB28535/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sperry Corp
Original Assignee
Sperry Rand Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB944687A publication Critical patent/GB944687A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J23/00Power drives for actions or mechanisms
    • B41J23/20Fluid-pressure power drives
    • B41J23/24Fluid-pressure power drives for impression mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J9/00Hammer-impression mechanisms
    • B41J9/16Means for cocking or resetting hammers
    • B41J9/22Fluid-pressure means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J9/00Hammer-impression mechanisms
    • B41J9/26Means for operating hammers to effect impression
    • B41J9/34Fluid-pressure means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/30525Directional control valves, e.g. 4/3-directional control valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71Multiple output members, e.g. multiple hydraulic motors or cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/80Other types of control related to particular problems or conditions
    • F15B2211/885Control specific to the type of fluid, e.g. specific to magnetorheological fluid
    • F15B2211/8855Compressible fluids, e.g. specific to pneumatics

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Impact Printers (AREA)

Abstract

944,687. Selective printing. SPERRY RAND CORPORATION. July 25, 1962 [Aug. 16, 1961], No. 28535/62. Heading B6F. Apparatus for applying an impulse of short duration to a member, such as a printing hammer 16 1 , which is situated at the end of a chamber 38 1 and is movable only when the pressure in the chamber rises above a certain magnitude, comprises a sealed piston 28 1 to which momentum is imparted to decrease the volume of and increase the fluid pressure in the chamber 38 1 , the arrangement being such that the pressure in the chamber does not increase to a sufficient value to operate the hammer until the piston is nearing the end of its travel towards the hammer. The hammer is held in its retracted position by an external pressure or a spring. Momentum is imparted to the piston 28 1 by the admission through a port 32 1 of a fluid pressure impulse to the side 40 1 of the piston, this pressure being such that the pressure in the chamber 38 1 does not rise to the same value until the piston is nearing the end of its travel. The input pressure may be constant or may decrease as the piston moves towards the hammer, and is terminated either prior to or subsequent to the time when the hammer begins to move. Thereafter the high pressure in the chamber 38 1 which may be increased by hammer rebound causes the piston to be returned to its initial position. The end 29 1 of the piston may be tapered and the end 27 1 of the chamber 38 1 similarly shaped. As applied to printing mechanisms for pneumatic data-processing systems a number of hammers 16 1 ... 16 N selectively operated from a control source 36 co-operate with rings of type 24 1 ... 24 N on a rotating cylinder 20 or on rotating type wheels.
GB28535/62A 1961-08-16 1962-07-25 Fluid pressure operation of devices such as printing hammers Expired GB944687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US131911A US3159099A (en) 1961-08-16 1961-08-16 Fluid pulsing means for print hammers

Publications (1)

Publication Number Publication Date
GB944687A true GB944687A (en) 1963-12-18

Family

ID=22451563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28535/62A Expired GB944687A (en) 1961-08-16 1962-07-25 Fluid pressure operation of devices such as printing hammers

Country Status (5)

Country Link
US (1) US3159099A (en)
BE (1) BE620847A (en)
CH (1) CH400200A (en)
GB (1) GB944687A (en)
NL (1) NL282126A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263607A (en) * 1964-07-29 1966-08-02 Sperry Rand Corp Fluid hammer impression actuating means
US3282206A (en) * 1964-12-21 1966-11-01 Sperry Rand Corp Hydraulically actuated print hammer for high speed printers
US4027762A (en) * 1973-11-10 1977-06-07 Kokusai Gijutsu Kaihatsu Kabushiki Kaisha Dot printer
US4046073A (en) * 1976-01-28 1977-09-06 International Business Machines Corporation Ultrasonic transfer printing with multi-copy, color and low audible noise capability
US4290357A (en) * 1979-10-09 1981-09-22 Natmar, Inc. Independently operable multihead endless band printer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1055857A (en) * 1911-11-22 1913-03-11 Hans Charles Behr Process of operating percussive apparatus.
US1031526A (en) * 1912-03-05 1912-07-02 Newton Heston Cloud Jr Gun.
US1555655A (en) * 1923-11-01 1925-09-29 Bryant Service Inc Explosive marking device
US1691170A (en) * 1926-11-29 1928-11-13 All Metal Products Company Toy machine gun
US2546114A (en) * 1944-08-28 1951-03-20 Triplett & Barton Inc Pneumatic die stamping machine

Also Published As

Publication number Publication date
US3159099A (en) 1964-12-01
NL282126A (en)
BE620847A (en)
CH400200A (en) 1965-10-15

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