GB760821A - Improvements in safety devices for stopping the power drive to machinery when obstruction occurs - Google Patents

Improvements in safety devices for stopping the power drive to machinery when obstruction occurs

Info

Publication number
GB760821A
GB760821A GB3628253A GB3628253A GB760821A GB 760821 A GB760821 A GB 760821A GB 3628253 A GB3628253 A GB 3628253A GB 3628253 A GB3628253 A GB 3628253A GB 760821 A GB760821 A GB 760821A
Authority
GB
United Kingdom
Prior art keywords
machinery
stopping
power drive
safety devices
dec
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
GB3628253A
Inventor
Frederick William Kendall
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.)
BROWN AND WARD TOOLS Ltd
Original Assignee
BROWN AND WARD TOOLS 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 BROWN AND WARD TOOLS Ltd filed Critical BROWN AND WARD TOOLS Ltd
Priority to GB3628253A priority Critical patent/GB760821A/en
Publication of GB760821A publication Critical patent/GB760821A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G15/00—Mechanical devices for initiating a movement automatically due to a specific cause
    • G05G15/08—Mechanical devices for initiating a movement automatically due to a specific cause due to the load or torque on a member, e.g. if exceeding a predetermined value thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Transmission Devices (AREA)

Abstract

760,821. Control of motors. BROWN & WARD (TOOLS), Ltd. Dec. 22, 1954 [Dec. 31, 1953], No. 36282/53. Class 38(3) [Also in Group XXIV] In a safety device for stopping the power drive to machinery in the event of obstruction, a power-transmitting link or rack A is formed of two relatively slidable parts 4, 5 which are held together by a spring and normally act as a single unit, but if abnormal resistance is encountered the spring allows the parts 4, 5 to move apart and consequently a switch 7 carried by the part 5 is actuated by a plate 9 on the part 4 to stop the driving electric motor. As shown the rack A is actuated by a cam-driven sector 1 and drives a machine shaft 3.
GB3628253A 1953-12-31 1953-12-31 Improvements in safety devices for stopping the power drive to machinery when obstruction occurs Expired GB760821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3628253A GB760821A (en) 1953-12-31 1953-12-31 Improvements in safety devices for stopping the power drive to machinery when obstruction occurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3628253A GB760821A (en) 1953-12-31 1953-12-31 Improvements in safety devices for stopping the power drive to machinery when obstruction occurs

Publications (1)

Publication Number Publication Date
GB760821A true GB760821A (en) 1956-11-07

Family

ID=10386681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3628253A Expired GB760821A (en) 1953-12-31 1953-12-31 Improvements in safety devices for stopping the power drive to machinery when obstruction occurs

Country Status (1)

Country Link
GB (1) GB760821A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272484A (en) * 1992-10-16 1994-05-18 Dewhurst Plc Method and apparatus of operating powered devices, for example, automatic doors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272484A (en) * 1992-10-16 1994-05-18 Dewhurst Plc Method and apparatus of operating powered devices, for example, automatic doors

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