GB645527A - Improvements in electric switches or contactors with delay action - Google Patents

Improvements in electric switches or contactors with delay action

Info

Publication number
GB645527A
GB645527A GB3094748A GB3094748A GB645527A GB 645527 A GB645527 A GB 645527A GB 3094748 A GB3094748 A GB 3094748A GB 3094748 A GB3094748 A GB 3094748A GB 645527 A GB645527 A GB 645527A
Authority
GB
United Kingdom
Prior art keywords
pinion
lever
rack
adjustable
break
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
GB3094748A
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.)
E N BRAY Ltd
EDWARD ERNEST HOPWOOD
Original Assignee
E N BRAY Ltd
EDWARD ERNEST HOPWOOD
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 E N BRAY Ltd, EDWARD ERNEST HOPWOOD filed Critical E N BRAY Ltd
Priority to GB3094748A priority Critical patent/GB645527A/en
Publication of GB645527A publication Critical patent/GB645527A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/86—Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
    • H01H50/88—Mechanical means, e.g. dash-pot

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

645,527. Electromagnetic switches. BRAY, Ltd., E. N., and HOPWOOD, E. E. Nov. 29, 1948, No. 30947. [Class 38(v)] A contactor is given a delayed make or break by means of a pinion k (or rack) carried by the armature and engaging a fixed rack k<SP>1</SP> (or pinion), the pinion k operating a coaxial lever n between the end of which and a part fixed relative to the rack is mounted an extendable and contractable mechanical escapement delay device s. This is of the kind in which an actuating bar t is retarded in one direction of movement but moves freely in the other. The contactor shown has a quick break and delayed make. On de-energization of the magnet j a spring h, assisted by gravity, rotates the armature a about its pivot b separating a contact e from the fixed contact e<SP>1</SP> and causing the rotation of the pinion k as it moves along the fixed rack k<SP>1</SP>. The lever n has a pin p engaging a slot q in the pinion to provide a lost-motion connection and is urged downwards by a coiled spring r so that as the pinion rotates, the lever n moves with it, the actuating bar t of the time-delay mechanism moving freely downwards till a pin y encounters an adjustable cam x. The bar t and lever n now remain stationary while the pinion rotates and takes up more or less of the lost motion between it and the lever. On energizing the magnet, the pinion rolls back along the rack, retaking up the lost motion, after which the lever n is carried along with it slowly under the retarding influence of the time delay mechanism. This continues till the contacts are nearly closed when the delay mechanism becomes disengaged and allows the contacts to close quickly. The time delay is adjustable by the cam x. In a modification, Figs. 6, 7 (not shown), affording a quick make and delayed break, the lever n is coupled to the pinion without any lost motion and the effective length of the actuating bar is adjustable by a cam device.
GB3094748A 1948-11-29 1948-11-29 Improvements in electric switches or contactors with delay action Expired GB645527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3094748A GB645527A (en) 1948-11-29 1948-11-29 Improvements in electric switches or contactors with delay action

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3094748A GB645527A (en) 1948-11-29 1948-11-29 Improvements in electric switches or contactors with delay action

Publications (1)

Publication Number Publication Date
GB645527A true GB645527A (en) 1950-11-01

Family

ID=10315592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3094748A Expired GB645527A (en) 1948-11-29 1948-11-29 Improvements in electric switches or contactors with delay action

Country Status (1)

Country Link
GB (1) GB645527A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163727A (en) * 1962-10-08 1964-12-29 Hamilton Watch Co Snap closure switch for one-way clutch drives

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163727A (en) * 1962-10-08 1964-12-29 Hamilton Watch Co Snap closure switch for one-way clutch drives

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