US1253141A - Pull-socket. - Google Patents

Description

s. BucHsBAuM,

PULL SOCKET.

\ APPLICATION FILED JULY 28.1916.

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Specification of Letters lretent.

Patented Jan. t1, tt'iJlFa.

Application filed July 23, 19%. Serial No. 1.11M

To all whom it may concern.

Be it known that l, SAMUEL llncrrsniuar, a citizen of the United States; residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Pull-Sockets, oi? which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a. P21? of this specification.

My invention relates to electric switching devices and has for its object the provision of an improved switch mechanism which is of use in a multitude of devices such for instance as pull sockets or key sockets.

ln accordance with my invention it have a rotatable element which when rotating in either direction of rotation is adapted to impart a quick make anda quick break of the circuit controlled by the switch which is under the control of said rotating clement.

ll will explain herein my invention as more specifically applied to a pull socket movement andalso a key socket. 'lhese particular forms are set forth more in detail in the accompanying drawing, in which- Figure 1 shows an elevation of a pull socket;

Fig. 2 shows a partial sectional view along line aa of Fig. 1;

Fig. 3 is a detail view of the ratchet mechanism employed;

Fig. i is a perspective view showing certain parts separated more clearly to reveal features of construction; 1

Fig. 5 is a view similar to Fi 2 of the device as applied to a key socket. and.

Fig. 6 is a fragmentary View illustrating a detail or construction.

In Fig. 1 I show the ordinary form of socket l as operated by the pull chain 2. lhe pull chain is preferably operated through a bell shaped opening 3 as more clearly shown in Fig. 2.

My improved switch mechanism includes a switch element 4 having the contact blades 5, 5 integrally associated with a link 6. The switch element 4 has its link projecting through an abutment 7 against which ahutment rests a spring 8 preferably encircling said link 6. The switch element at its free extremity near the blades 5 has a flat section 9 which is adapted to slide alone; the inner face of a rocker element 10. lhis rocker element is pivoted upon the studs 11 which l. The oppositely turned lugs or cars 16, 16 are designed to he engaged by the rotatable operating element which controls the device as will he presently explained. It will be readily apparent that it the rocker element is tilted from the position it occupies in Fig. so that it moves clock-.

wise until the link (3 is moved beyond the line joining the center line of tlie spindle 11 and the center line of the hole through which said. link projects in the abutment 7 that then the spring 8 will force this switch element into its opposite position througha contra-clockwise movement wherein element 4 then abuts against the ahutmcuts 14 instead of the abutmcnts 15 'as illustrated in Fig. 2. A reverse movement of the rocker 10 will of course restore the switch element 4 by snap action into the position of Fig. 2. In order to move the rocker from the posi tion shown in Fig. 2 by a clockwise rotation into a position at or near its limiting position. to thoother side, such for instance as shown in the position of Fig. 5, l utilize a rotating element consisting in this instance of a. shaft 17 having at its right hand extremity an augularly displaced. section 18. The element 17, 18 is made of a piece of material rounded in cross-section, thus to facilitate its manufacture, said element being merely bent into the form shown. The diagonal section 18 is partly rounded at its extremities to provide a more gradual movement as will presently appear. The'rotatalole element 1?, when occupying the position of Fig. 2, holds the rocker 10 in the position shown. It now, thisdiagonal section 18 is moved about into its alternative position as shown. in Fig". 5, then it of course carries the rocker I with it and as soon as the movement has been suliicient to permit the sprinp 8 to pass the dead center, this spring 'l'orces the parts into the position of Fig .3 by snap action. It oi course makes no difierence what might be the direction of rotation of the rotatable element 17 as the movement from one limiting position by either direction of rotation Will carry the diagonal strip 18 into its alternative position.

1n the construction of Fig. 5 this is taken advantage of by supplying the rotatable element 17 with akey 19, thus to form a key socket.

In Fig. 2 the same result is accomplished when the chain 2 is successively pulled, this chain acting upon a rotatable sleeve 20 loosely carried about the rotatable element 17. The rotatable element in this instance has a pin 21 passing therethrough. "lhe sleeve 20 is likewise provided with two spring catches 22 and 23 held down in position at their extremities, as at 25, to engage the stud 21. A spring 26 forces the sleeve 20 to the right (Fig. 2) and at the same time tends to rotate this sleeve in a clock- WlSG direction, referring to Fig. 3, or what might be a contra-clockwise directlon if the device of Fig. 2 were looked at in the direction of the arrow Z). A suitable stop 27 limits this reverse or retractile movement of the sleeve 20.

It will thus be seen that l have provided a switch structure by which a quick make and a quick'break may be obtained by controlling the switch element in a. suitable manner from a rotatable element. The arrangement is such moreover that the parts for the key socket and pull socket are prac tic-ally interchangeable by merely substituting the control mechanism of one for the control mechanism of the other, the actual switch structure and its parts remaining the same.

It is thought that the true nature of my invention will thus be readily apparent to those skilled in the art.

Having however thus described one form which my invention may take, what I claim as new and desire tosecure by Letters Patent is:

A 1. A switch movement of the character 'described comprising a switch element, and

means for moving said switch element by snap action from either limiting position to gral with said switch element inclosed by the convolutions of said spring.

2. A switch movement of the character described comprising a switch element, and means for moving said switch element by snap action from either limiting position to the other, said means including an oscillatingly mounted rocker, a rotatable control element cooperating with said rocker to move said rocker alternately from one limiting position toward its other limiting posi' tion, said switch element being .slidable along said rocker, a spring for engaging said switch element and adapted to force it into either limiting position at the opposite extremities of said rocker, a stem integral with said switch element inclosed by the eonvolutions of said spring, and an abutment for the free extremity of said spring slidably supporting said stem.

In witness whereof, I hereunto subscribe my name this 25thday of May, A. D. 1916.

SAMUEL BUOHSBAUM.

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