GB571089A - Delayed action air pressure control device - Google Patents

Delayed action air pressure control device

Info

Publication number
GB571089A
GB571089A GB1859543A GB1859543A GB571089A GB 571089 A GB571089 A GB 571089A GB 1859543 A GB1859543 A GB 1859543A GB 1859543 A GB1859543 A GB 1859543A GB 571089 A GB571089 A GB 571089A
Authority
GB
United Kingdom
Prior art keywords
air pressure
operate
pistons
control device
pressure control
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
GB1859543A
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.)
Holden & Hunt Ltd
JOHN WRIGHT POOLE
Original Assignee
Holden & Hunt Ltd
JOHN WRIGHT POOLE
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 Holden & Hunt Ltd, JOHN WRIGHT POOLE filed Critical Holden & Hunt Ltd
Priority to GB1859543A priority Critical patent/GB571089A/en
Publication of GB571089A publication Critical patent/GB571089A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating

Abstract

571,089. Actuation of switches. HOLDEN & HUNT, Ltd., and POOLE, J. W. Nov. 9, 1943, No.18595. [Class 38 (v)] A fluid-pressure-operated switch for switching in a welding circuit when the air pressure to a welding electrode has been sufficiently built up, comprises two connected pistons 2, 3 moving in cylinders 5, 6 of different diameters, the smaller cylinder 6 being connected at 12 to a constant fluid pressure and the larger cylinder 5 being connected at 11 to an increasing fluid pressure so that eventually the pistons move to the right to the .position shown and operate the switch. The double piston 2, 3 may have a flange 8 which limits its movement and also operates two plungers 9 to operate two switches 10. One of these may close the welding circuit and the other may close a circuit to operate valve connected to the exhaust to enable the pistons to return to their original position.
GB1859543A 1943-11-09 1943-11-09 Delayed action air pressure control device Expired GB571089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1859543A GB571089A (en) 1943-11-09 1943-11-09 Delayed action air pressure control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1859543A GB571089A (en) 1943-11-09 1943-11-09 Delayed action air pressure control device

Publications (1)

Publication Number Publication Date
GB571089A true GB571089A (en) 1945-08-07

Family

ID=10115142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1859543A Expired GB571089A (en) 1943-11-09 1943-11-09 Delayed action air pressure control device

Country Status (1)

Country Link
GB (1) GB571089A (en)

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