US1679706A

US1679706A - Fixture hanger

Info

Publication number: US1679706A
Application number: US666771A
Authority: US
Inventors: Thomas A Brown
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-10-05
Filing date: 1923-10-05
Publication date: 1928-08-07
Anticipated expiration: 1945-08-07

Description

Aug. 7, 1928. 1,679,706

T. A. BROWN 'FIXTURE HANGER Filed Oct. 5, 1925 /Z fi? I l -A l 2.9

el* 'Il' l 33 bbotmq erably formed PATENTv OFFICE.

THOMAS A. BROWN, F LAKE CHARLES, LOUISIANA.

' l FIXTURE HANGER.

Application led October 5, l1923. Serial No. 666,771.

This invention relates to insulated contact fixture hangers and it comprises a pair of suitably protected insulating blocks adapted to be secured together in end to end relation, one of said blocks being provided with projecting contacts, the other of said blocks being provided with socket contacts adapted to receive said projecting contacts.

An important object of the device is to provide a simplified construction wherein the parts are adapted for ready assembly and wherein etlicient electrical contact 1s maintained.

Other objects and advantages of the 1nvention will be apparent during the course of the following descri tion.

In the drawings I ave shown one embodiment of the invention. In this showing:

Figure 1 is a side elevation, U

Figure 2 is a central longitudinal sectional vew,

Figure 3 is a section taken on line 3-3 of Fi re 2, and, i

igure 4 is a detailed lperspective of one of the contacts and its associated contact socket.

Referring to the drawings the numeral 10 designates an insulating block formed of any suitable insulating material and rovided with an axial opening 11 exten ing therethrough. A protecting shell 12, prefthe insulatin block, as shown in Figure 2, and is provi ed with an upper end portion 13 contactin with the upper end of the block 10. T e shell 12 is provided with an auxiliar extending portion 14 internally threadedr as at l for connection with the end of the conduit or other element. The internally threaded opening of the portion 14 of the shell forms an extension of the o ening 11' in the block 10. The lower end4 i o the shell 12 is provided with an annular flange 16 for a purpose to be described.

y In its lower end the block is provided with an annularl recess 17 having an uppr y wallv18 to which is secured at prefera opposite points, a pair of contacts 19. The

contacts 19 are provided with horizontal.'

ends 20 secured in position .by screws or the like 21. Lead wires v22 extend through the opening 11 and the extension 14, and the lower 'ends of these wires are' secured against the horizontal. ortions 20 of the contacts -19 by means o the screws 21 as shown in of malleable iron, surrounds' Figure 2. The contacts 19 are provided with downwardly projecting ends 23 which Aare substantially parallel to the axis of the block 10 and pro'ect a substantial distance beyond the lower ace'thereof.

The numeral 24 designates a lower insulat ing block of substantially circular cross section and the upper end of this block is vnormally arranged against the lower face of the block 10 as shown in Figure 2. A protecting shell 25 surrounds the block 24 and this shell has its upper end offset outwardly as at 26 to.form in effect an annular extension. The block 24 is rovided at its upper end with an annular s ouldei' 27 sub stantially filling the annular extension 26 of the shell 25. The periphery of the ex-- tension 26 is threaded for reception within a clamping member 28 which is provided at its upper end with an inwardly extending annu ar shoulder 29 adapted to contact with the u per face of the annular flange 16. The c amping member 28 is provided with a hexagonal portion 30 by means of which the clamping member may be tightened to clamp the

shells

12 and 25 together as will be obvious.

The block 24 is provided with an axial opening 31 and the lower end of the block is provided with a depending tubular member 32 threaded at its lower end as at 33 for connection with a suitable fixture. Wires 34 extend through the opening 31 and the opening within the tubular member 32 as shown in Figure 2. A preferablyv machine turned fiber insulating sleeve 35 surroundsr the upper portion of the tubular member 32 and the Vlower end of the shell 25 is provided with an internal annular shoulder 35 having a central opening lsnugly receiving the sleeve 35.

As shown in AFigure 2, the lower insulat ing block 24 is provided with preferably op- 4positely arranged recesses` 36 adaptedto re- 'ceive contact sockets designated as a whole the reference numeral 37. Referrin .to

igure 4, it will be seen that the mem ers 37 comprise substantially horizontal upper ends 38 adapted to be secured against the face .39 of an annular recess 40 within the upper end of the block 24 by means of suity ltally Manel to the Gruen-42 and slightly spacedp therefrom. he upper ends of the wires 34 are adapted to be secured to the contact sockets 37 by means of the screws 41 as will be obvious.

In practice I prefer to form the contacts 19 and the shell 25 of brass and the contact sockets of copper but it will be obvious that I ma employ any suitable material in making t ese elements. 'While I have shown and Vdescribed a pair of projecting contacts and contact sockets, it willv be obvious that I may provide any number of these members according to the requirements of each installation.

'lhe operation of the device is vas follows: The upper portion of the shell 12 may be embedded in the ceiling of a room or mounted in any suitable manner as desired and the.

lead wires 22 are led into the upper insulating block and theirvends secured to the contacts 19 in the. manner described. The lower insulating block 24 is then moved ,upwardly until its upper face engages the lower face of the insulating block 10 with the projecting ends 23 of the contacts 19 as will be obvious.

`irm engagement is maintained whereby per- ;fect electrical contact is effected. The projection 14 and tubular member 32 are provided with internal and external threads respectively in order that the device may be turned end for end when installing, depending upon the form of outlet toy which it isv to l It is to be understood that the formo'f I Having described invent-ion, I claim':

A device of the character described comw 'prising upper and lower separable sections including shells and cylindrical insulating.

blocks larranged in end to endrelatiomsaid blocks being provided with relativelylarge axial openings extending throughout their,

length to receive lead-in wires, the" adjacent faces of'said blocks being providedl with annular concentric recesses communicating with said axial openings, a pair of contacts formed of flat `material having angular upper ends secured in the recess in.` said upper block, the lower ends of said contacts projecting a substantial distance down-J wardly beyond the lower face of said upper block, a pair of contact sockets formed of flat resilient material having angular upper ends secured in the bottom of the recess in said lower block, each of said sockets including av downwardl projecting portion bent back upon itsel tol rovide parallel arms adapted to frictionarlly receive the lower end of one of said contacts, said parallel arms beingf arranged diametrically opposite each other and parallel to the axis of said blocks and spaced from the axial opening in said lower block, said lower block being provided with recesses correspondin in position to and snugly receiving sai arms, the remote ends of said shells being provided with tubular axial extensions communicating with the axial openings in said block and constituting attaching members, and means for'securing said separable members together, lthe lead-in wires being adapted to be connected to said contacts and contact sockets within said annularrecesses.k

. In testimony whereof I aflix my signature. I y

THOMAS A'BRowN.