US1139687A - Separable circuit device. - Google Patents

Description

C J KLEIN 1 SEPARABLE CIRCUILDEVICB APPLICATION mm 1111.11. 1912.

1111151114311 May18. 1915.

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' To all whom it may concern:

* ED sTATEs, PATENT OFFICE.

CHARLES KLEIN, or MILWAUKEE, WISCONSIN, AssIeiroa 'ro THE curtnnarmmnnn Mrs; 00., or MILWAUKEE,

Be it known that I, CHARLES J. KLEIN, a I

' citizen of the United States, residing at Milwaukee, inthecounty of Milwaukee and State of, W1sconsin, have invented new and useful Improvements inseparable Circuit Devices, OfWlllCll the following is a full,

clear, concise, and exact description, reference being hadto the accompanying drawing, forminga' partof this specification.

My lnventlon relates to improvements in -se arable circuit devices.

t .is particularly applicable to separable plugs and receptacles but is not limited to this particular class of circuit devices.

It is one of the objects of my invention to provide combined circuit making and holding clips which will firmly hold together the parts ofa circuit device but which'will at the same time permit the parts to be readily separated. Y

' Various other objects and advantages of my'invention will be hereinafter set forth.

For the purpose of clearly and fully dis-' closing the nature and advantages of my invention I shall describe the embodiment thereof illustrated in the accompanying drawing. My invention, however, is not limited to the specific embodiment thereof chosen for the purpose of illustration.

In the accompanying drawing, Figure 1 is a sectional view through a separable plug and receptacle with .the parts separated.

" Fig. 2 is a perspective View of one set'of circuit making and holding clips, and Fig. 3 is an elevation ofthe pair of clips shown in Fig. 2.

The device illustrated includes a member 1 adapted to be inserted in a lamp socket or the like and a member 2 adapted to be plugged into the member 1.-

The member 1 comprises an insulating body provided withv contact receiving recesses 3' and 4. Within the recess 4: which is preferably rectangular in cross section, is a j contact 5 retained in place by means of a screw G'passing through the body of the member .1/ and threading into a nut 7 within the contact 5. The screw 6 may be conven- .iently employed as a retaining means for the usual screw shell 8, surrounding a cylindrical portion 9 of the member 1. The screw 6 y .when so used also serves to electrically connect the screwshell 8 to the contact 5.

The recess 3 is adapted to receive a similar Specification of Letters latentr Patented Mayls, 1915, application filed Janaury 11, 1912. serial No. 670,512;

--contact 10 having a lateral extension 11 which may be formed integrally therewith or separate therefrom and secured thereto in any preferred manner. The contact 10 is re.-

tained in place by means of a screw 12 'pass-' mg longitudinally through the center of the member 1 and threading into the extension 11. The screw 12 also retains in place the" usual center terminal 14 for the member 1 end; electncally connects the same to the-conac Y 'In addition to the retainin' screw-t the screw shell 8 is provided wit a retaining screw 15 threaded into a nutlfiset into a recessin the member 1 preferably in alinement with the contact 10; .An insulating packing 17 is interposed between the contact 10 and the nut 16 to insulate the samefrom one another. v

The plug member 2 comprises the'ordicontacts 18 and 19 adapted to plug onto'the contacts 10 and 5 respectively of the member 1. The contacts 18 and 19 are of similar construction and each is'provided with anextension 20 and bindin screw 21 for connecting the same in circult. The contacts 18' nary form of insulating body and carries and 19 are held in place in the usual manner by screws 22.

In practice I prefer to construct the contacts as illustrated in Figs 2 and '3. As

illustrated in these figures, the contacts of the member 1 comprise a resilient strip 23 of conducting'material bent to bring its extremities 24 and25 into parallelrelation, the .90

as not to interfere and prevent compression of the fingers as hereinafter described.

The contacts of the plug member are Identical in all respects. rigid parallel fingers 29 and 30 spaced Just a slightly greater distance apart than the fingers 24 and 25 of the-contacts of the member 1. In practice I prefer to form one of these fingers integrally with the extension 20 I and rivet the other finger to said extension. The fingers 29 and 30 are preferably made in the shape illustrated, being provided with Each comprises two cooperating contacts contained in the memrounded portions and having their outer edges curved inwardly as shown at 31. Further, the'tipof one ofthe fingers is provided with a conical projection 32 adapted to enter the aperture 26 in its cooperatingcontact finger. In practice I prefer to provide the opening and conical'projection on relatively,

opposite fingers of the two sets of contacts.

With the arrangement described when the member 2 is plugged into the member 1 the rigid contact fingers of the former engage and compress the resilient fingers of their fingers firmly holds the removal plug member 2 in place. In addition to the function described-the conically shaped projections on the rigid fingers perform another function. When the. two sets of contacts are being fitted together-the points of the projections naturally seek the center of the openings' in the cooperating contacts.

these conical projections tend to aline the Hence two sets ofcontacts. It is accordingly unnecessary to restrict .the openings in the member 1 to insure proper alinement of the contacts when the plug is inserted. In practice, for a purpose which will be shortly de scribed, I prefer to have the openings inthe member 1 considerably larger than is necessary to admit the contacts'of the member 2.

Due to the peculiar construction of the contacts and the freedom of movement of the contacts of'the member 2 in the openings of the inemberl, the member 2 may be readily detached from the member .1 either by a straight pull or by leverage. .The'curva tures 31 in the outer edges of the fingers of theplug member and the lateral play of said fingers in'the openings of the member 1 permit the plug member to be readily pried'ofi' by a sidewise movement, whilethe resiliency of the fingers of the member 1 allows the plug member to be pried ofiby a movement at right angles to the movement just men-'- tioned. As a 'matterof fact the connection between the two members is so resilient and pliable that the member 2 may be readily pried oil: of the memberl at practically any point/about the axis-of the two members.

What I claim as new and desire to secure" byLetters Patent is 1. In combination, a multipart circuit de 'vice, one part having a rigid contact and the other hav ng a resilient contact to cooperate therewith, one of said contacts having a substantially conical projection and the other Y having a recess to receive said projection for alining said contacts when brought together and for releasably locking said parts against separation.

2. A multipart circuit device, one part having ,a longitudinally disposed recess therein," a pair of resilient contact fingers mounted in said recess, one of said fingers having an opening and the other part having a pair of longitudinally projecting rigid contact fingers, one of said rigid fingers hav ing a conical pro ection thereon, said rigid contactfingers fitting over saidresilient contact fingers and compressing'the same and said conical projection entering said opening in one of said resilient fingers to hold the parts together, said recess being larger than said contact fingers whereby separation of the parts is permitted either by an axial pull or by leverage.

3. A multi-part circuit device, one: part having parallel spring fingers adapted to.

yield laterally and the other having rigid parallel fingers adapted to slide. over said spring fingers, cooperating fingers being provided with a yielding lock comprising a projection on one adapted to enter a recess in the other, said projection tending by its engagement with the recessed portion of its cooperating finger to aline all of said fingers. 4. A two part circuit device, one part be ing provided with a pair of parallel yield ing contacts having inturned portions at2'.;- their extremities offset with respect to each j other and the other part being provided'1 with a pair of parallel rigid contacts adapted to be plugged onto said yielding contacts and compress the same. 7

. In witness whereof, I have hereunto subscribed my name in the presence of two Witnesses.

CHARLES J. KLEIN.

Witnesses:

,JnANn'rrn S. Bnoon, ANN SCHWARTZ.

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