GB408376A - Improvements in and relating to the manufacture of pressed steel universal boxes, looping in boxes, switch boxes, circular and oblong boxes, and other types of fittings used in connection with electrical wiring in conduit - Google Patents

Improvements in and relating to the manufacture of pressed steel universal boxes, looping in boxes, switch boxes, circular and oblong boxes, and other types of fittings used in connection with electrical wiring in conduit

Info

Publication number
GB408376A
GB408376A GB3259432A GB3259432A GB408376A GB 408376 A GB408376 A GB 408376A GB 3259432 A GB3259432 A GB 3259432A GB 3259432 A GB3259432 A GB 3259432A GB 408376 A GB408376 A GB 408376A
Authority
GB
United Kingdom
Prior art keywords
boxes
looping
circular
oblong
conduit
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
GB3259432A
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.)
EDWIN JOHN TRAWFORD
Original Assignee
EDWIN JOHN TRAWFORD
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 EDWIN JOHN TRAWFORD filed Critical EDWIN JOHN TRAWFORD
Priority to GB3259432A priority Critical patent/GB408376A/en
Publication of GB408376A publication Critical patent/GB408376A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

408,376. Making electric conduit junction boxes &c. TRAWFORD, E. J., 55, Stafford Road, Bloxwich, Walsall. Nov. 18, 1932, No. 32594. [Class 83 (ii).] Junction boxes, looping-in, switch, circular and oblong boxes and other fittings for electrical conduit wiring are formed e.g. from a blank, Fig. 3, pressed and pierced as in Fig. 4 with socket holes 7d, then bent to the shape of the box sides, Fig. 5, the seam being welded before or after a separate bottom 8 is inserted. The sides may be made of more than one shaped part.
GB3259432A 1932-11-18 1932-11-18 Improvements in and relating to the manufacture of pressed steel universal boxes, looping in boxes, switch boxes, circular and oblong boxes, and other types of fittings used in connection with electrical wiring in conduit Expired GB408376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3259432A GB408376A (en) 1932-11-18 1932-11-18 Improvements in and relating to the manufacture of pressed steel universal boxes, looping in boxes, switch boxes, circular and oblong boxes, and other types of fittings used in connection with electrical wiring in conduit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3259432A GB408376A (en) 1932-11-18 1932-11-18 Improvements in and relating to the manufacture of pressed steel universal boxes, looping in boxes, switch boxes, circular and oblong boxes, and other types of fittings used in connection with electrical wiring in conduit

Publications (1)

Publication Number Publication Date
GB408376A true GB408376A (en) 1934-04-12

Family

ID=10341058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3259432A Expired GB408376A (en) 1932-11-18 1932-11-18 Improvements in and relating to the manufacture of pressed steel universal boxes, looping in boxes, switch boxes, circular and oblong boxes, and other types of fittings used in connection with electrical wiring in conduit

Country Status (1)

Country Link
GB (1) GB408376A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718106A (en) * 1969-03-10 1973-02-27 Cts Corp Method of making an electric switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718106A (en) * 1969-03-10 1973-02-27 Cts Corp Method of making an electric switch

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