公开(公告)号：GB763117A

公开(公告)日：1956-12-05

申请号：GB1837054

申请日：1954-06-23

Applicant: CRABTREE & CO LTD J A ,  THOMAS DANIEL GUY WINTLE ,  EDWARD MIDDLETON

IPC: H01H21/06

Abstract: 763,117. Snap action switches; switch covers. CRABTREE & CO., Ltd., J. A., WINTLE, T. D. G., and MIDDLETON, E. June 17, 1955 [June 23, 1954], No. 18370/54. Class 38(5) In an electric switch of the kind in which the cover 1 cannot be removed when in the "on" position a handle 7 is attached to a spindle which projects through a bush 4 in the cover and carries a pin 10 to which is attached a torsional snap action spring 11 the pin also engaging a sleeve 9, which is provided with slots 9a which receive a transverse pin 13 on a switch spindle 12; a bracket 2 secured to the cover and disposed over the sleeve 9 has an elongated slot 2b which will accept the transverse pin 13 of the switch spindle in the " off " position only, so that the cover and associated mechanism may be disengaged from the operating spindle only when the switch is "off." The snap action spring 11 has one end secured to the cover at 16 and the other end to a flat end 10a of the pin 10, the movement being limited by side projections 2d of the bracket 2. The handle 7 may be padlocked in either of the two operating positions to lugs on a front plate 15 (not shown). Specification 719,811 is referred to.

公开(公告)号：GB745744A

公开(公告)日：1956-02-29

申请号：GB536453

申请日：1953-02-26

Applicant: CRABTREE & CO LTD J A ,  THOMAS DANIEL GUY WINTLE

IPC: H01H73/30

Abstract: 745,744. Automatic circuit breakers. CRABTREE & CO., Ltd., J. A., and WINTLE, T. D. G. Feb. 1. 1954 [Feb. 26, 1953], No. 5364/53. Class 38(5) A push-button tripfree switch, particularly a motor starter provided with overload devices as in Specifications 686,688 and 686,740, comprises a toggle 22, 23 pivoted at one end on a swinging bracket. 32 consisting of a pair of side plates joined by a cross strip 32a and pivoted to a lever 8 by a pin 33, the centre joint of the toggle being connected by a link 20 to a lever 13 which is pivoted at 11a, 19 to "stop" and "start" buttons 11, 12 respectively and to the frame at 14. The other end of the toggle is pivoted to an insulating frame 25 carrying a contact 28 for each phase. the frame being spring-biased to the contact-open position. On overload, units each comprising a bimetal 1 and a heater 1a deflect downwardly into engagement with extension 2b of a trip arm 2 supported in notches 3 in the casing 3a and the turning of arm 2 against springs 3b causes an ambient bimetal 4 secured to arm 2 to engage a ramp 5 on an insulating plate 5a causing the latter to pivot at 5b thereby depressing a part 6a of a spring blade 6. end 6b of which is secured to a metal end plate 10 and the other end 7 of which releases arm 8. Arm 8 pivots at 9 under influence of spring 30 carrying pivot 33 with it. and owing to engagement of strip 32a with a screw 34, pivot 21 rises and spring 30 then urges parts into position shown in Fig 2, the contacts now being disengaged. In the event of failure of spring 30, frame 25 is moved into the "off" position by the movement of the centre point of the toggle to 21b, the toggle arm 23 and bracket 32 thus moving arm 8 to the re-set position. The pressure between end 7 and arm 8 and the position of pivot 31 may be adjusted by screw 34, while the amount of engagement of the two can be varied by moving a pillar 35 in a horse-shoe slot in the plate 10 which causes slot 6d in the blade 6 through which plate 5a passes to be moved vertically. The gap between ramp 5 and bimetal 4 may be varied by adjusting a scale lever 37 pivoted on plate 10 one end of the lever carrying pivot 5b for the plate 5a, the pivot moving in a slot 41 in the plate 10. A rubber cover (Fig.10, riot shown) may be provided for the pushbuttons. Specification 686,739 also is referred to.

公开(公告)号：GB731036A

公开(公告)日：1955-06-01

申请号：GB2125153

申请日：1953-07-31

Applicant: CRABTREE & CO LTD J A ,  THOMAS DANIEL GUY WINTLE

IPC: H01H3/00 ,  H01H13/10 ,  H01H13/36 ,  H01H13/50 ,  H01H21/28

Abstract: 731,036. Retractive switches. CRABTREE & CO., Ltd., J. A., and WINTLE, T. D. G. Oct. 2, 1953 [July 31, 1953], No. 21251/53. Drawings to Specification. Class 38 (5). A limit switch has a casing with a non-circular recess adapted to receive any one of a number of different operating heads, depending upon requirements. Examples of various operating heads are given. Specifications 730,986 and 730,991 are referred to.

公开(公告)号：GB642622A

公开(公告)日：1950-09-06

申请号：GB1133248

申请日：1948-04-24

Applicant: CRABTREE & CO LTD J A ,  ERNST BESAG ,  THOMAS DANIEL GUY WINTLE

IPC: H01H1/20 ,  H01H50/54

Abstract: 642,622. Switch contacts. CRABTREE & CO., Ltd., J. A., BESAG, E., and WINTLE, T. D. G. April 24, 1948, No. 11332. [Class 38(v)] Each contact b of a 3-phase motor starter is composed of sheet copper about 0.018 inch thick thereby providing light weight and avoiding bounce when the silver buttons c engage fixed contacts, Fig. 3 (not shown). Flanges e give the contact rigidity and guide it in a recess a 1 in the movable insulating carrier a. Each contact is resiliently mounted by stems f inserted horizontally through slots i in the carrier, a spring g being thereby compressed between the tail of each stem and the carrier The stems are then rotated through 90 degrees, permitted by holes concentric with the slots i, and inserted through slots k in the contact b. Holes in the contact, concentric with the slots k, permit turning of the stems back to the horizontal and the enlarged stem heads f thus secure the contacts and are prevented from subsequent rotation by horizontal bulges b' formed in the contact. In Fig. 6 (not shown), the ends of the contact are also bent over, the ends serving as abutments for a blade spring taking the place of springs g. Alternatively, the contact may be strengthened by a longitudinal dishing formed centrally thereon.

公开(公告)号：GB633395A

公开(公告)日：1949-12-12

申请号：GB2258447

申请日：1947-08-14

Applicant: CRABTREE & CO LTD J A ,  ERNST BESAG ,  WALTER EDWARD HILL ,  THOMAS DANIEL GUY WINTLE

IPC: H01H71/46

Abstract: 633,395. Electrically released switches. CRABTREE & CO., Ltd., J. A., BESAG, E., HILL, W. E., and WINTLE, T. D. G. Aug. 14, 1947, No. 22584. [Class 38 (v)] An electromagnetically-actuated 3-phase motor starter as disclosed in Specification 633,396, has in addition to the main contacts controlled by the armature, two sets of auxiliary contacts for controlling interlocking or signalling circuits and energizing the magnet coil, respectively, these contacts being actuated by a start button g and retained by the electromagnet. An insulating block a screwed to a box c containing an armature f, a magnet d and coil c 1 , slidably houses a plate h which carries at one end contact strips o, o 1 urged apart by a spring p, and is normally pushed forward by a spring n so that the strip o bridges contact pillars s in the interlocking circuit and the strip o 1 disengages contact pillars s 1 in the circuit of coil c 1 . When the button g is pressed, the stem g 1 engages a knob k on the plate h, moving it to break the contacts s and make'the contacts s 1 . This action energizes the coil c 1 so that a nose e 1 on the armature engages a lug h 1 on the plate h to keep the contacts actuated when the start button is released. The front of the block a is'stepped at t, whereby the terminals u, u 1 of the contacts s, s 1 are accessible at different levels.

公开(公告)号：GB609988A

公开(公告)日：1948-10-08

申请号：GB949046

申请日：1946-03-27

Applicant: CRABTREE & CO LTD J A ,  WALTER EDWARD HILL ,  THOMAS DANIEL GUY WINTLE

IPC: H01R9/22

Abstract: 609,988. Binding-posts. CRABTREE & CO., Ltd., J. A., HILL, W. E., and WINTLE, T. D. G. March 27, 1946, No. 9490. [Class 38 (i)] A mounting for a binding post, terminal or the like comprises a hollow metal insert f disposed in an insulating base a and formed with a constricted throat f , a reduced portion of the stem d of the binding post having peripheral knurls e which are forced into said throat, thereby securing the binding post in position. The base a has partitions which form cells for the terminals. The binding post may be of the type described in Specification 593,252, or a modifica. tion of the type described in Specification 592,135. The stem d has a transverse hole g to receive a cable ferrule h and is tapped at the top to receive a screw cap k within which is received a phmger l enclosing a spring m which presses the plunger into engagement with the ferrule. The cap k may have an inturned lip engaging an annular shoulder on the plunger or the latter may have an annular flange on which the spring is seated and a reduced portion extending freely into the cap and being turned over so that the cap plunger and spring may be withdrawn as a unit.

公开(公告)号：GB609143A

公开(公告)日：1948-09-27

申请号：GB704046

申请日：1946-03-06

Applicant: CRABTREE & CO LTD J A ,  ERNST BESAG ,  WALTER EDWARD HILL ,  THOMAS DANIEL GUY WINTLE

IPC: H01H71/10

Abstract: 609,143. Automatic circuit-breakers. CRABTREE & CO., Ltd., J. A., BESAG, E., HILL, W. E., and WINTLE, T. D. G. March 6, 1946, No. 7040. [Class 38 (v)] A circuit-breaker, which may be adjusted for hand or automatic reclosing, comprises two blades g, g carrying normally closed contacts h and having between them the upper ends of a stop arm f rotatably mounted and a trip arm c slidably and rotatably mounted on the extended spindle d of a spring-loaded push-button e. On overload, a thermal element (not shown) moves a bar a longitudinally so that a lug a engages the lower part c of the trip arm, rotating it about the spindle d. When set for hand-reclosing, as shown in Figs. 1, 3, as soon as the head c of the trip arm comes out of engagement with a slot g in the blade g , a spring k bearing on the press-button e moves the arms c, f so that the head c enters the constriction between g and g forcing the contacts open. For reclosing, the button e is depressed to carry back the arm f while the arm c is held in the tripped position until arm f enters between the blades g, g at w, after which the shoulder d on the spindle d engages the arm c carrying it back until it is forced into the slot g by blade-spring m . As the button is released the stronger spring k carries the arm f Back to the arm c allowing the contacts to close. For automatic reclosing the button e is pushed in and turned through 180 degrees so that the rib l engages the bearing i and renders the spring k inoperative. In this position the catch c is lifted just clear of the end of the slot g and trip bar a rotates the arm c to bear against the arm g to open the contacts directly, and allows them to reclose as soon as the overload is removed. To avoid retarded " automatic " tripping, the shaft on which the trip arms are mounted is eccentric at v so that compensation is obtained for the gap between the arm c and the blade g. The contacts can be opened manually at any time by depressing the button e so that the stop arm f is forced between the blades at w. Initial adjustment is made by a screw p extending through the cover i to bear on the trough of the blade g .

公开(公告)号：GB592135A

公开(公告)日：1947-09-09

申请号：GB1271345

申请日：1945-05-22

Applicant: CRABTREE & CO LTD J A ,  WALTER EDWARD HILL ,  THOMAS DANIEL GUY WINTLE

IPC: H01R4/48

Abstract: 592,135. Binding-posts. CRABTREE & CO., Ltd., J. A., HILL, W. E., and WINTLE, T. G. D. May 22, 1945, No. 12713. [Class 38 (i)] A compact terminal comprises a pillar a having an aperture b for a cable ferrule c and an intersecting opening tapped at g to receive a cap m which acts on a compression spring k for a plunger i that presses on the ferrule to lock it in position if the cap slackens. When the cap m is tightened it bears on the plunger flange h which rests on a shoulder e in the pillar opening. The pillar may be secured to a base and in a modification, Fig. 3 (not shown), a securing screw is introduced through the tapped opening.

公开(公告)号：GB573920A

公开(公告)日：1945-12-12

申请号：GB2129543

申请日：1943-12-20

Applicant: CRABTREE & CO LTD J A ,  WALTER EDWARD HILL ,  THOMAS DANIEL GUY WINTLE

IPC: H01R4/20

Abstract: 573,920. Sleeve couplings. CRABTREE & CO., Ltd., J. A., HILL, W. E., and WINTLE, T. D. G. Dec. 20, 1943, No. 21295. [Class 38 (i)] A connector for cables has at each end a longitudinal opening to receive the conductor and insulation of a cable the walls being adapted for indentation into retaining engagement with both. In the construction shown, a threaded or ribbed portion d receives the core e and an enlarged portion b receives the insulation c, the cable core and insulation being secured by indentations f and g. An insulating rubber sleeve h having an annular lip i at each end for sealing purposes, may be slipped over the joint. Specification 568,632 is referred to.

公开(公告)号：GB554578A

公开(公告)日：1943-07-09

申请号：GB426842

申请日：1942-03-31

Applicant: CRABTREE & CO LTD J A ,  HAROLD FLETCHER MCLOUGHLIN ,  WALTER EDWARD HILL ,  RICHARD WALTER MORGAN ,  THOMAS DANIEL GUY WINTLE

IPC: H01H85/20

Abstract: 554,578. Electric cut-outs. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., HILL, W. E., MORGAN, R. W., and WINTLE, T. D. G. March 31, 1942, No. 4268. [Class 38 (i)] A holder for an electric fuse of the cartridge or tubular type comprises an insulating member with an opening for receiving the fuse, and a resilient device which projects into the opening to hold the fuse in position while enabling it to be withdrawn from the opening by movement in an endwise direction. The holder is moulded from artificial resin and consists of a flat rectangular portion b with a central U-shaped portion a into which the fuse is inserted. A small rubber plug m is disposed in a rectangular opening k in the curved base of the part a for pressing the fuse caps into seatings e formed on the underside of the portion b. Ribs i are provided to restrict endwise movement of the fuse, and depending lateral flanges h to prevent flash-over between adjacent fuses. The part b is also formed with an opening j to enable the condition of the fuse to be observed, and with shallow recesses d for the reception of small plates c that bear identifying marks.