GB1013689A - Improvements in or relating to impact air cylinders - Google Patents

Improvements in or relating to impact air cylinders

Info

Publication number
GB1013689A
GB1013689A GB959362A GB959362A GB1013689A GB 1013689 A GB1013689 A GB 1013689A GB 959362 A GB959362 A GB 959362A GB 959362 A GB959362 A GB 959362A GB 1013689 A GB1013689 A GB 1013689A
Authority
GB
United Kingdom
Prior art keywords
piston
air
duct
extension
central plate
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
GB959362A
Inventor
Tony Cyril Slocombe
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.)
Scovill Inc
Original Assignee
Scovill Inc
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 Scovill Inc filed Critical Scovill Inc
Priority to GB959362A priority Critical patent/GB1013689A/en
Publication of GB1013689A publication Critical patent/GB1013689A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/223—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which completely seals the main fluid outlet as the piston approaches its end position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/22—Drives for hammers; Transmission means therefor for power hammers
    • B21J7/24—Drives for hammers; Transmission means therefor for power hammers operated by steam, air, or other gaseous pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/221—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke for accelerating the stroke, e.g. by area increase

Abstract

1,013,689. Power hammers. SCOVILL MANUFACTURING CO. March 13, 1963 [March 13, 1962], No. 9593/62. Heading B3H. [Also in Division F1] An impact air cylinder having a piston 19 for operating a press punch 28 connected thereto, comprises an upper cylinder 12 separated from a lower cylinder 13 by a central plate 11 provided with first and second non-return valves 21, 23 and having an aperture 24 containing a sealing ring 26 which engages an extension 25 of the piston 19 when in its upper position in the lower cylinder. In operation pressure air is supplied through an inlet duct 16 to the upper chamber 12 to act on the extension 25 and when a sufficient pressure is built up in the chamber 12 the piston 19 moves downwardly and the extension 25 descends below the sealing ring 26 so that the whole surface of the piston 19 is suddenly exposed to the air pressure and the piston thereby continues downwardly at increased speed. The first non-return valve 21 allows atmospheric air to enter the space between the central plate 11 and the piston 19 in order to prevent a vacuum forming therein. The piston 19 is cushioned at the end of the downward stroke by a boss 31 thereon coacting with a chamber 30 through which air in the lower cylinder passes to an outlet duct 18. A multi-way control valve (not shown) is operated to return the piston, whereby air is supplied through the duct 18 and exhausted through the duct 16, the second non-return valve 23 preventing air from being trapped between the central plate 11 and the piston 19.
GB959362A 1962-03-13 1962-03-13 Improvements in or relating to impact air cylinders Expired GB1013689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB959362A GB1013689A (en) 1962-03-13 1962-03-13 Improvements in or relating to impact air cylinders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB959362A GB1013689A (en) 1962-03-13 1962-03-13 Improvements in or relating to impact air cylinders

Publications (1)

Publication Number Publication Date
GB1013689A true GB1013689A (en) 1965-12-15

Family

ID=9874983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB959362A Expired GB1013689A (en) 1962-03-13 1962-03-13 Improvements in or relating to impact air cylinders

Country Status (1)

Country Link
GB (1) GB1013689A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2025951A3 (en) * 2007-08-10 2011-06-01 Pacoma GmbH Piston/cylinder-unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2025951A3 (en) * 2007-08-10 2011-06-01 Pacoma GmbH Piston/cylinder-unit
US8122812B2 (en) 2007-08-10 2012-02-28 Pacoma Gmbh Piston and cylinder unit

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