US981734A - Snap-switch. - Google Patents

Description

' J. A. YORK.

SNAP SWITCH.

APPLICATION rum) Ammz, 1907.

9 3734! Patented Jan 17,1911;

52 INVENTORQ Z, LIZ/721 4. York,

BY 5 I I I v TORNEY. A

v sense.

lJNlTED STATES rn rnn'r oru on.

3;"@HN.A. YORK, 01 HARTFORD, COLlNECTICUT, ASSIGNOR TO. GENERAL ELECTRICv COMPANY, A CORPORATION OF NEW'YORK. 7

SNAP-SWITCH.

Application filed August 12, 1907. Serial No. 388,072.

fil'laullwftozwt it may concern known that I, JOHN A. Yoiuna citizenof the United stntes and a resident of llerti'ordpih the cotuity of Hartford and Shite of Connecticut, have invented a new and Improved Snap-Switch, of which the followiugis nspecification.

My inventioni'elutcs to the class of devices usedfoi1cont rolli11g the tlow of a current of electricity by completing and, breaking the circuit; and the object of my invention is to provide a device of this class that shall be extremely simple in construction tiiid operation, comparatively inexpensive to manufacture, and especially one in Whichthe action shall be sharp, decisive a'nd positivcl'y determined. A form of device in the. use of which these objects maybe attained is illustrated in the accompanying drawings in which Figure 1 IS a top or plan view of a snap switchcn'ihodyingmy invention. on plane denoted by dotted line 1-1 in Fig. 2. Fi

2 is a longitudinal section through the-device on plane denoted by dotted line 22- in Fig. 1. Fig. 13 is a bottom view of the parts,- with the base and stationary contactsrcmoved. Fig. 4.- is a lilreview but showing the trip in position just previous to disengagement from the catch plute. Fig. '5 is a view similar to lii 3 but showing the parts in an ztdvnnccd position "from that shown in Figs. 3 and a Fig. 6 is :1 sectional view on plane denoted hv line 6--6 of Fig. 2, looking tron: t-hebottom, and showing the tripplste and coupler in position corresponding to Fig. 3. Fig. 7 is 3 view similar to Fig. 6 hut with theparts in position corresponding to Fig. i. Fig. 8 is a View similar to Fig.6 but with the parts in the same position as shown in Fig. Fig. 9 is a top view showing a modified form of the invention.

In the accompanying drmvings the numeral- 10 denotes a base which may be made in uny suitable. torn and of any desired insulating 1 stcrisl This base has a central opening "it formed. more especially for convenience in ZISSGD'lldlIU" the parts. and has on its upper surface a recess 1.2 within which :1 portion oi the operative parts of the structure are located. ,itationary contacts 13 of any suitable form and construction are secured to tl' dotted line l lg. 2) may be employed for and a cover 14: (shown in I A catch plate 15 is located within the recess 12 and overlying the opening ll eu'rs 16. provided with screw holes extendingft'roin thecatch plate, serving as a means of securing the plate in position, as by nieztns of Specification of Letters Patent Patented Jail} 1'7, 1911... I

screws inserted through said holes. Catches the catch plate "in any suitable manner, as shown herein a Washer 19 underlying the enlarged end of the spindle serving this purpose,

catches 17 to limit the movement of the parts. This trip plate has guides 22, preflninating in the movable contacts 24 which are adapted to pass between spring fingers 25 constituting parts of thefixed contacts. This switch bar is of U-shape, asshownxin Fig. 9., and one end 27 of a spring 26 presses is located in a recess in the key A. coupler opening 30 is formed .in the trip plate 20. this QIM-llllllfj hating stop slmulders 31, .l.lu1 opening 30 lms its two. opposing edges formed on the urcsoi conthe coupler. being of 1lO11,(;l1.CL1ltl1 form in cross-section. As shown herein this section of the spindle is square.

It will be noted that the end 36 of the coupler is 0th width to occupy half of the smaller are 33, so that as turning movement is applied to the spindle in the direction of thecurved arrow a, force will be imparted through the coupler to the trip plate 20 to move the latter in the direction of the straight arrows shown in the figures. The true center of the coupler will move with the trip plate in a right line, and the slot or shoulders 17 are foruiedupon'the catch; pl-ateior a purpose to be hereinafter dc-c scribed. A spindle 18 is rotatably held in erably extending-along its edges and .betweenwhich is located a switch bar 23 terccntric circles. the larger t re-32 being joined us tothnt part at least projecting through in the coupler allows the latter to movelat- A trip plate 20 is mounted for rotation with the spindle and has on its under surf-ace a trip 21 cooperating with t-lieshoulders or againstcne of the branches of the switch; bar while the opposite end 28 of said spring orally oi the spindle to permit sliding1novement of the trip plate, which is guided in its.

movements by reason of the engagement of the lips 22 with the switch bar 23.

In the operation of the device, the parts being in theposition shown in F igs; 1, 2, f5,

and 6, and force being appliedto the key;

to turn the spindle in the direction shown by the curved arrows, tension is placed uponthe spring tending to rotate the switch bar. The latter is, however, held by the tripplate which in turn is held from turning movement by engagement of its trip 21 with the stop shoulders or catches 17 on the catch plate. The force, however, applied through the couplerto the trip plate moves. it in the direction of the straight arrow in-the fig ures fr0m-the position shown in Figs. 1, 2, a 3, and 6 to the position shown in Figs. at and 7, when the trip is just ready to disengage [from the stop shoulder. A slight further movernent'disengages the trip, when the trip plate and switch bar are quickly thrown by the spring 26 into position shown in Figs.

5' and 8,. the contacts 24on the switch bar' being quickly ,thrown from engagement with the fingers 25. Upon applying force 'to the key in the same direction the action will be repeated and the contacts upon the switch bar quickly thrown into engagement with the contact fingers forniingpart of the stationary contacts 13.

In the form. of the device shown in Fig. 9 the coupler 3" is pivot-ally attached to the catch plate 38, the force transmitted to the couplerthrough the spindle being imparted to the trip slide through the pivot 39, which moves in a right line, as denoted by the straight arrow 7), the operation of the parts being practically the same as above described and the .coupler being slotted to permit the action of the parts.

It will be noted that-the slot in the coupler affords a. means for loosely connecting it With the spindle, the latter and the kcybeing the prime operating nieans for the switch.

Iclaim- 1. A base having contacts and a catch secured thereto, a trip coiiperating with said catch, a switch 'bar connected to said trip, a:.sp1ndlc non-circular in cross section,

means for operating the spindle, a coupler slldably connected to said spindle and to said trip, and means for imparting rotary movement to the trip.

2. Aba'se haying contacts, a catch-securedto the base, a trip cooperating with SZUCl' catch, a switch bar connected *ith the trip and h'aving contacts, means for imparting rotary movement to the switch bar, a S-Pilb dle non-circular cross-section with means for operating it, and a coupler operatively connected with the trip and-having a; slotto slidably' receive said spindle.

Crl

til)

. A base having contacts, a catch secured.

to thebase, .a-tripplatehaving amp for said catch, a switch bar. having contacts and forini-ng a guide for'the trip plate, means for rotating the trip plate, a spindle of noncircular rennin cross-section, means for operating the-spindle. and a coupler ha\' "ing a slot to slidably receive said spindle and in engagement with the trip plate.

4. A. base having contacts, a catch secured to the base, a trip plate having a coupleropening and a trip to cooperate with said catch, 111eansfor rotatmg'the trip, a spindle of non-circular form 'in. cross-section, 'a

coupler fittingsaid coupler opening and having a slot to shdably receive sa d spindle, and a switch bar operatively connected with the trip and haring'contacts.

A base having contacts, a catch secured thereto, a trip plate having a tripcooperat ingwwith the catch and provided with a coupler opening having opposite edges formed-on arcs of concentric circles. means for rotating the trip, a switch bar forming i a guide for the trip plate and having ccn-

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