GB722927A - Improvements in or relating to door operating mechanisms - Google Patents

Improvements in or relating to door operating mechanisms

Info

Publication number
GB722927A
GB722927A GB1182252A GB1182252A GB722927A GB 722927 A GB722927 A GB 722927A GB 1182252 A GB1182252 A GB 1182252A GB 1182252 A GB1182252 A GB 1182252A GB 722927 A GB722927 A GB 722927A
Authority
GB
United Kingdom
Prior art keywords
door operating
relating
operating mechanisms
chain
door
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
GB1182252A
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.)
EXPRESS LIFT CO Ltd
Original Assignee
EXPRESS LIFT CO 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 EXPRESS LIFT CO Ltd filed Critical EXPRESS LIFT CO Ltd
Priority to GB1182252A priority Critical patent/GB722927A/en
Publication of GB722927A publication Critical patent/GB722927A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/06—Door or gate operation of sliding doors

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

722,927. Door operating mechanism. EXPRESS LIFT CO., Ltd., and DIXIE, W. A. May 1, 1953 [May 9, 1952], No. 11822/52. Drawings to Specification. Class 65 (1). A pair of doors moving vertically in opposite directions are interconnected by chains passing over pulleys as described in Specification 722,928. The chains relate to the chain 26 passing round a sprocket beneath the door opening to ensure that the upper door follows the lower in closing ; this chain may be duplicated at the other side of the doors.
GB1182252A 1952-05-09 1952-05-09 Improvements in or relating to door operating mechanisms Expired GB722927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1182252A GB722927A (en) 1952-05-09 1952-05-09 Improvements in or relating to door operating mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1182252A GB722927A (en) 1952-05-09 1952-05-09 Improvements in or relating to door operating mechanisms

Publications (1)

Publication Number Publication Date
GB722927A true GB722927A (en) 1955-02-02

Family

ID=9993329

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1182252A Expired GB722927A (en) 1952-05-09 1952-05-09 Improvements in or relating to door operating mechanisms

Country Status (1)

Country Link
GB (1) GB722927A (en)

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