GB751601A - Improvements in or relating to hydraulically operated apparatus - Google Patents

Improvements in or relating to hydraulically operated apparatus

Info

Publication number
GB751601A
GB751601A GB832351A GB832351A GB751601A GB 751601 A GB751601 A GB 751601A GB 832351 A GB832351 A GB 832351A GB 832351 A GB832351 A GB 832351A GB 751601 A GB751601 A GB 751601A
Authority
GB
United Kingdom
Prior art keywords
crosshead
ram
cylinder
cylinders
working
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
GB832351A
Inventor
Bertram Thomas Gowing
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.)
Fielding and Platt Ltd
Original Assignee
Fielding and Platt Ltd
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 Fielding and Platt Ltd filed Critical Fielding and Platt Ltd
Priority to GB832351A priority Critical patent/GB751601A/en
Publication of GB751601A publication Critical patent/GB751601A/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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive

Abstract

751,601. Drawing. FIELDING & PLATT, Ltd. June 3, 1952 [April 10, 1951], No. 8323/51. Class 83 (4). A hydraulically - operated apparatus, particularly a draw-bench or push-bench for the hot or cold working of metals, comprises a working cross head 10 operated by at least two hydraulic ram-containing cylinders 5, 9 disposed longitudinally behind each other and so connected together that the working stroke of the crosshead 10 is the sum of the respective strokes between the ram and the cylinder of each ram-containing cylinder. A hydraulically-operated tube drawbench has a fixed end member 3 and a fixed ring bed 4 connected by tie rods 1, 2. A hydraulic cylinder 5 mounted on the end 3 and a fixed support 6, has a hollow ram 17 connected to a movable crosshead 7 which carries on its opposite face a second coaxial cylinder 9 secured to another movable crosshead 8 and having a ram 18 connected to the working crosshead 10; the latter may carry a tool or means for gripping a workpiece. The two ram cylinders 5, 9 are in communication and pressure liquid supplied thereto through the end 3 causes the ram 17 to move the crosshead 7 and cylinder 9, and the ram 18 to move the crosshead 10 relative to its cylinder whereby the stroke of the crosshead 10 is twice that of the crosshead 7. These two crossheads are also connected by a rack and pinion mechanism 29-30, Figs. 2, 4 (not shown), which causes them to have a movement ratio of two to one. A pair of hydraulic cylinders 22 disposed one above and one below the cylinder 9 are connected to the crosshead 7 which also carries a further pair of cylinders 11 slidable on the tie rods 1, 2 which form stationary rams. These cylinders 11, 22 affect the retraction stroke of the crosshead 10. The draw-bench may have more than two main rams and pairs of rams may be arranged in parallel to give increased power.
GB832351A 1951-04-10 1951-04-10 Improvements in or relating to hydraulically operated apparatus Expired GB751601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB832351A GB751601A (en) 1951-04-10 1951-04-10 Improvements in or relating to hydraulically operated apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB832351A GB751601A (en) 1951-04-10 1951-04-10 Improvements in or relating to hydraulically operated apparatus

Publications (1)

Publication Number Publication Date
GB751601A true GB751601A (en) 1956-07-04

Family

ID=9850329

Family Applications (1)

Application Number Title Priority Date Filing Date
GB832351A Expired GB751601A (en) 1951-04-10 1951-04-10 Improvements in or relating to hydraulically operated apparatus

Country Status (1)

Country Link
GB (1) GB751601A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098476B (en) * 1959-01-14 1961-02-02 Demag Ag Shank rod carriers in butt, in particular pipe butt joints

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098476B (en) * 1959-01-14 1961-02-02 Demag Ag Shank rod carriers in butt, in particular pipe butt joints

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