US1205683A

US1205683A - Attachment-plug and receptacle.

Info

Publication number: US1205683A
Application number: US5713315A
Authority: US
Inventors: George B Thomas
Original assignee: Bryant Electric Co
Current assignee: Bryant Electric Co
Priority date: 1915-10-21
Filing date: 1915-10-21
Publication date: 1916-11-21
Anticipated expiration: 1933-11-21

Description

Q mwa G. B. THOMAS ATTACHMENT PLUG AND RECEPTACLE.

APPLICATION FILED 0CT.21,1915.

' I I II I I 1 (III I Iggy/ 1 Patented Nov. 21, 1916.

m and particiilarly to certain detaile of conneo rene."

T all :wiwm it may concern: E

Be it known that}, Gaoaon B. Tiioraae, a citizen of the Unit/eel States of America,

and residing, in the city of Bridgeport, county of Fairfield, "and State of Cox, necticut, have invented a certain new and- Irnproveql Attachment-Plug and Eecepta?" cle,'of which the following is a specification.

My invention relates to attaclnnentplug struction which constitute improvements over that now commonly in use.

in the accompanying drawings, Figure lis a horizontal section through an attachment plug ankl receptacle in which my invention is. embodied. in one form; Fig. 2 is a plan of the receptacle alone; Fig. 3 is an inverted plan of the same partially broken away; Fig. 4;- is a cross section on the lines 4-4, Fig. 2; Fig. 5 is a perspective of one of the receptacle terminals; Fig. 6 is a cross section on the line (F -6, Fig. :2; Fig. 7 is an inverted. plan of the attachment plug alone; and Fig. 8 is a plan of the insulating disk for the plug.

- As here illustrated, my invention is can bodied in a plug and receptacle of the polarity type. The receptacle comprises a body 10 of insulating material having (lepressed ledges 11 on diagonally opposite corners, on which the wire terminal plates 12 are secured by the screws 13 piercing the. base from belowand taking into tapped holes in the terminal plates. Metallic yoke cars 14 at each end of the body afford means for mounting the receptacle in an outlet box (not shown) and also for securing in position theface plate 15. A flat annular boss 16 may be formed on the upper surface of the receptacle, which boss projects through or into a central aperture formed in the face plate to receive it. Within the area of this boss the body of the receptacle is pierced by two slots 17 and 18 lying at right angles to each other: Thetwo

receptacle terminals

19 and 20 pro ect upward into these slots from the straps 21 and Y22 to which they are secured by rivets 23 and to which current is conducted from the wire terminals 12 by the screws 13 which eye tend from the latter to straps Qland let into the lower face of the body 10 and un derlying the

straps

21 and 22. These latter straps are electrically connected. to the in the finished. device signed to cover.

have struck anchoring logs or projections hold the jack bases firm arrae eninnnmoe auzo nnciie'raome.

I Specification of Lethe-re. Patent. I Pghm' 'hefi Iilij li,

Application fillet. @ctooer 23, 191:5. Eerial lags. 57,1323.-

straps '25, and. also held in position in their channels in the lower lace of ihe hotly 143; by means of counter-sunk screws 24%, E27,

passing (loam-marl through the oily 10,

slots 28 the ends of straps fifi'aml taking" into tapped holes in the *l screws 2 2'2, are corona; wax anti. hire-wise the 21; lying}; the chaiinele in of the porcelain hocly lhere eonie danger however" ehe We. will shrink or otherwise become loose lrom hie J "v 10 as it harclens aiul thei it will iall out, time exposing the live concluctors which it, is de- To obviate iliis trouble l 29 from. the overlying straps 21 M622. When the w is .iiowecl'in molten conciltion into the strap clianeele works he neath the anchor lugs 29 and. the latter retain the wax aflJer iiihas harrienecl even should it iooaen from the walls of ihe channels, l i I loiiperating with this receptacle 1 proville an attachment plug which comprises .a holly 30 of insulating material pierced as 31 io aiiniit the leatlii 3in Wires {not shown Depressed cells form seats'shapetl to the bases of the plug jacks 3 35, in "the form of blades lying at right angles .to each other and spaced apart in proper reref lotion to the

holes

17 and 10 in the receptacle so that they freely enter the latter and engage the receptacle terminals 13, E28. Binfiing' screws 36 on the bases aiibrfi means for securing the liarcri oracle of ihe leading-in wires, Willie ring screws 3? In iihe fully inserted position or the plug, the shallow depressions 38 formed in. the faces of the jacks are engaged by the teats 39 on the contact faces of the receptacle terminals, and a spring engagement between the parts is thus established. which prevents the accidental Withdrawal of the plug. in order to form a closer} wiring chamber, 1 provide an infinilating disk 40 of stifi' paper or fiber which is provided with slots 4-1, 4-2 lying at right angles to each other and in in their wells.

register with the 21l15 3i and so that it may be passed down over the jacks and seat- (ill on the shallow ledge 4-3 formezl Within the narrow peripheral rim ll on the enten ing face of the plug. in order to he able Elli ' insulatingbody of the plug I this rim is notchedv out at a on opposite sides of the plug, so that the finger nails or the end of a screw driver may be passed beneath the inner face of the disk to lift the same away from the plug body. A metallic casing 46 is fitted on the and spun into the wire hole 31 at one end and over the edge to remove the disk,

- of the rim it at the other end, thus securing ported from sulation having a channel in a it )ermanently on the plug.

he construction shown is economical of the type dereon the opposite face of the block and underlying the wire terminals, screw means electrically and mechanically connecting said straps and wire terminals and securing the same upon said block, together with receptacle terminals carried by and wholly sup said straps and projecting into said slots, and supplemental means piercing the blocks for securing said straps thereto and holding the receptacle terminals in ])OS1- tion in their slots. substantially as described.

2. In an electrical device, a block of inface thereof, a conducting strap lying in said channel, an anchor lug struck from said strap and an insulating composition covering said strap in the channel and engaging said anchor lug on all sides whereby said composition is held in the channel by said anchor lug onthe strap.

3. An electrical device of the type described, comprising an attachment plughaving an insulating block recessed on one face to form a wiring chamber, plug jacks secured at one end within said chamber and projecting beyond the face of the block, and wire terminals electrically connected to said jacks within the wiring chamber, said face of the block having a marginal rim and a shallow ledge inwardly offset therefrom, in combination with an insulating disk slotted in register with said jacks and fitting'within said rim and against said'ledge with the jacks passing through said slots in the assembled position of the parts, substantially as' described.

fl. An electrical device of the type described comprising an attachment plug having an insulating face to form a wiring chamber, plug jacks secured at one. end withinsaid chamber and projecting and wire terminals electrically connected to said jacks within the wiring chamber, said face of the block having a marginal rim and a shallow ledge inwardly offset thereblock recessed on one beyond the face of the block,

from, in combination with an insulating.

disk slotted in register with said jacks and fitting within said run and against said ledge with the jacks passing through sald slots in the assembled position of the parts, said rim being notched out at predetermined points to afford access to the edge of the insulating disk for the removal of the latter. In. testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

GEORGE B. THOMAS. Witnesses:

G. #V. Goooninon,

H. M. WICHERT.