US1842451A - Switch - Google Patents

Description

E. JACOB! Jan. 26, 1932.

SWITCH Filed April 22 1929 Patented Jan. 26, 1932 UNITED STATES r vrsu'r OFFICE EDWARD N. JACOBI, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO BRIGGS & STRATTON CORPORATION, OF MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE SWITCH,

Application 11161 April 22, 1929. Serial No. 357,118..

This invention relates to improvements in switches and refers more particularly to key' 10 head forms a housing in which the switch elements are confined.

Another object of this invention resides in the provision of a switch of the character described in which the movable contactoris actuated directly from the inner end of the lock cylinder.

And a further object of this invention is the provision of aswitch of the character described which when assembled with its lock structure is a simple unitary device entirely contained within itself.

With the above and other objects in view which will appear as the description proceeds, my invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claims.

In the accompanying drawings, I have illustrated one complete example of the physicalembodiment of my invention con structed according to the best mode I have so far'devised for the practical application of the principles thereof, and in which:

Figure 1 is a transverse, sectional view with parts in elevation taken through a switch embodying my invention;

Figure 2 is a cross sectional view taken glirgugh Figure 1 on the plane of the line Figure 3 is a fragmentary, perspective view ofthe inner end of the lock structure with the switch elements removed therefrom;

Figure 4 is a perspective view of the movable contactor, itsdrive member, the spring, and the insulated spring seat shown disassembled, and

Figure 5 is a perspective view of the terminal head.

.Referring now more particularly to the accompanying drawings in, which like nu merals designate like parts throughout the several views, the numeral 5 represents the mounting. head or body of a conventional lock structure,which forms the mounting means for the switch elements, as will be later described, and in whose bore 6 a lock cylinder 7 is rotatably mounted. The lock cylinder 7 is held against longitudinal movement at its inner end by a shoulder 8 formed at the juncture between the bore 6- and a second smaller bore 9, and at its outer end by a cap member 10 formed of bendable metal shaped to the contour of the outer end of the mounting head and spun over an annular projection- 11 extended therefrom, as is customary.

The lock cylinder 7 is provided with the usual tumblers 12 which cooperate with longi- 1 tudinal grooves 13 in the mounting head to a secure the cylinder against rotation except when a proper key 14 is inserted in the cylinder, whereupon the tumblers are retracted within the cylinder, which is then free to be turned. v

The switch per seincludes a terminal head 15 carrying terminals 16 and.17 with which able metal, as best illustrated in, Figure 4, is

adapted to be engaged with the stationary contacts to electrically bridge thesame when the lock cylinder is turned to its unlocked position. Themovablecontactor is of substantially elongated, diamond shape and has flanges 21 extended laterally from its sides which are received in a similarly shaped apertime 22 in a drive member 23.

The drive member 23 comprises a disc of insulating material. such as fiber or the like, and is received within a counterbore 24 extended into the inner end of the lock structure mounting head outwardly of the bore 9, being rotatable therein with the cylinder.

Rotation of the cylinder 7 is imparted to the cally opposed notches 27 formed in the drive member outer periphery, the drive member resting on the outer faces'of the lugs 26.

Dis lacement of the drive member is prevente by the terminal head which is secured on the inner end of the, mounting head 5 by spaced projections 28 extended therefrom and s un over the outer face of the terminal head, t e periphery of the terminal head being reduced in diameter, as at 29, to receive the projections 28.

As best illustrated in Figure, the ends 30 of the movable contactor are'in a plane spaced outward of the medial portion so that when moved to off position, as illustrated in dotted lines in Figure '2, the medial portion thereof will be clear ofjthestationary contacts. Pro er contact between the ends 30 of the mova le contactor andthe stationary contacts is obtained from thej action of an expansive spring 31, received-between the flanges 21 of the movable contactor and 'confined between the movable contactor and a spring seat 32 formed of insulating material and received within a recess 33 formed in the adjacent inner end ofthe lockcy'linder 7 From the foregoing description, taken in :onnection with the accompanying drawing, 1t will be readily apparent to those skilled in the art to which an invention of the character described appertains, that I have provided a convenient and extremely compact "switch whichmay be securely locked against actuation, and which may be utilized for numerous purposes and b reason of its extreme compactness and re atively small size lends itself readily for use wherever compactness is a prerequisite. To facilitate its securement to a support, a portion of the mounting head 5 1s exteriorally threaded to receive a nut 34, the support, which usually consists of a panel or the like, thus may be impinged between the annular projection 11 and the nut3l.

What I claim as my invention is: J 1. A lock switch of the character described,

including a mounting head provided with a first bore adapted to receive-a lock cylinder, a second bore adapted to receive a switch mechanism, a third bore ofsmaller diameter than said first named bore and connecting said first and second named bore, a lock cylinder mounted within said first named bore abut-' ting the shoulder formed between said first and said third named bores, a switch head on plurality of contacts on said switch head, a contactor actuating member mounted forrotation within said second named bore, a pair of arms formed on said lock cylinder and en- 5 gaging .said contactor actuating member to the outer end of said second named bore, a

said actuating member and adapted to selectively engage or disengage said points upon rotation of said actuating member.

2. In a lock switch-of the character described, a mounting head provided with a first boreadapted to accommodate-a mount-, ing cylinder, a second bore adapted to accommodate a switch mechanism and a third bore joinin said other two bores and of smaller iameter than said first named bore, a lock cylinder mounted in said first named bore for rotation therein and abutt' the shoulder formed between said first allid third named bores, a switch head mounted at the outer end of said second named bore, a plurality of switch points mounted on said switch head, a contactor actuatin' member mounted for rotation within sald second named bore, a pair of. arms formed on said lock cylinder and en ageable with said last namedmember to ef ect rotation thereof, a contactor mounted within said contactor actuating member and adapted to selectively engage or disengage saidpoints upon rotation of said actuating member. and means constantly urgin said contactor into engagement with said switch head I 3. In a lock switch of the character described, a mountin head provided with a first named bore a apted to'accommodate a mounting cylinder, a second named bore adapted to accommodate a switch mechanism and a third named bore 'oining said other two bores and of spa Her ameter than said first named bore, a l ck cylinder mounted in said first named bore for rotation therein and abutting the shoulder formed between said first and said third named bores, a switch head mounted at the outer end of said second named bore, a: plurality of switch points mounted on said switch head, a contactor actuating member mounted for rotation within said second named bore, a plurality of arms formed on said lock cylinder and engageable with said contactor actuating member to effect rotation thereof and resilient means constantly'urgin said contactor into engagement with sai switch head.

4. A lock switch of the character described, a mounting head rovided with a first named bore and adapte to accommodate a mounting cylinder, a second named bore adapted to accommodate a switch mechanism and a third named bore joining said other two bores and of smaller diameter than said first named bore a lock cylinder mounted in said first named bore for rotation therein and abutting the shoulder formed between said first and said third named bores, a switch head mounted on the outer end of said second named bore, 'a plurality of switch points mounted on said switch head, a contactor actuatin 'membermounted for rotation within sai second named bore, a plurality of arms formed integrally on said lock cylinder and engageable with said contactor actuating member to effect rotation thereof, a contactor mounted in said contactor actuating member and adapted to selectively engage or disengage said points upon rotation of said actuating member, resilient means constantly urging said conhave hereunto sf.

1 tactor into engagement with said switch head and means insulating said last named means from said lock cylinder.

5. In a lock switch of the character described, a mounting head having a first named bore to accommodate a lock cylinder, a second named bore to accommodate a switch mechanism and a third named bore joining said other two bores and of smaller diameter than said first named bore, a lock cylinder mounted within said first named bore and abutting the shoulder formed between said first and said third named bores, a switch head mounted on the outer end of said second named bore, a plurality of switch points 7 mounted on said switch head, a contactor actuating member having an aperture therethrough and mounted for rotation wlthln said second named bore, a pair of arms formed on said lock cylinder and engageable with said contactor actuating member to'efiect rotation thereof, a contactor mounted in said aperture and adapted tov selectively engage or disengage said points upon rotation of said actuating member, an insulating member mounted in a recess in said lock cylinder, a spring abutting said insulating member and said contactor to constantly urge said contactor onto said switch head.

6. In a lock switch of the character described, a/ mounting member having a plurality of axial bores, a lockcylinde'r mounted in one of said bores .for rotary movement between a locked and an unlocked. position, a switch head substantially. closing another of said bores, a contact on said switch head,

a contactor actuating member mounted for rotation within one of said bores, a pair of spaced arms extended from said lock cylinder and engaging said contactor actuating member to effect rotation thereof, and a con-' tactor carried by said actuatingmember and adapted for engagement with said contact upon rotation of said lock cylinder.

7. In a lock switch of the character detor carried by said actuating member and adaptedfor engagement with said contact w n -m/

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