US1213035A - Instantaneous electric-socket attachment. - Google Patents

Description

P. STROUP.

IN$TANTANEOUS ELECTRIC SOCKET ATTACHMENT.

APPLTCATTON FILED NOV. 22, I915 1.2 1 8,035. latented Jan. 16, 191?.

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ammc ntw wumw I T m ge /m P. STROUP. v INSTANTANEOUS ELECTRIC SOCKET ATTACHMENT. 7 APPLIQA HDN FILED NOV- 2% l 9l5- 1,213,035. V Patented Jan. 16,1917.

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- l i n" PHILIP STROUP, OF CLEVELAND, OHIO.

INSTANTANEOUS ELECTRIC-SOCKET ATTACHMENT.

Specification of Letters Patent.

Patented Jan. 16, 1917.

Application filed November 22, 1915. Serial No. 62,871.

Y '0 all whom it may concern:

, Be it known that I, Piiimr S'rnour, a citizen ofthe United States of America, residing at Cleveland, in the county of Guyahoga and State of Ohio, have invented new and useful Improvements in Instantaneous Electric- Socket Attachments, of which the following is a specification.

This invention relates to electric plugs and has for its primary object to provide a device of this character havingthe inherent properties of being readily attached and detached from a socket in a very short in terval of time.

An object of the invention is to provide a simple constructionandat the same time insure a good electrical contact.

Another object of the invention is the simple manner of arranging theelements so as to prevent short circuits orflash overs between the parts connected at the opposite conductors of the circuit.

Other objects of the invention will appear hereinafter in the novel combination of elements as pointed out in the appended gclaim. y

In lthe drawings Figure 1 is a vertical section through an electric socket showing my invention applied thereto, the'invention being shown in side elevation. Fig. 2 is an enlarged vertical section through the plug.

Fig. 3is a side elevation looking at right angles to Fig.2. 'Fig. 4: isa perspective view 'of theblocks of which the plug is composed. Figs. 5,13 and 7 are cross sectiona-l views through the plug. Fig. 8 is a vertical section through a modified form of my invention Fig. 9 is a horizontal section therethroughf Referring to the drawings, the numerals .1 and 2 designate the side supportin blocks 'madelof insulating material, one 0 which being provided with the laterally extending portion 3 having passages 4 through which pass bolts 5 that have threaded engagement with the opposite side' blocks. The other side block in this particular instance, block 1, is provided with lugs 6 provided with {threaded-passages 7 for a purpose herein- 'after described. Rigidly formed with the side block member 1 is a bushing 8 and the latter if found advantageous can be detach-- ably held between the blocks 1 and 2 in any suitable manner such as by bolts. This 5, bushing 8 is provided with a bore 9 having its axis extending vertically In the preferred form of my invention, this bore 9 receives a bolt 10 having its end 11 resting upon the upper end of the bushin and a threaded end 12 receiving the usu'a nut 13 between which is frictionally held 'an'end ofthe current wire 14.. Passing through the lugs (3 thatis to say, through-the passages 7,

' are bolts 15 that d'etachably engage the adacent lower ends of a pair of opposite leaf springs 16 and 17, each having its upper end integrally formed with or detachably connected to a contact 18. These contacts 18 are of arcuate shape in cross section so asto conform to the curvature of the threaded bore of the socket 19 to increase the amount of contact between the contact members and threaded bore of the socket member. the contact members corrugated so that the ridge thereof will fit between the threads of the socket 1 9. For moving the contact toward the bushing for readily allowing the plug to'be attached to the socket, I rigidly secure to the leaf springs push buttons 20 of insulating material that slide in the spaces formed between the blocks -'1 and 2. From this arrangement it will be seen that when pressure is exerted upon the buttons, the leaf springs will be forced toward each other for carrying the contact members toward the bushing. After the device is forced a suitable distance within the socket, pressure is relieved from the button with the result that the resiliency of the leaf springs forces the contact members into tight engagement with the threaded bore of t e socket and at the same time prevents movement of the end portionof the bolt 10 away from the contact portion 21 of the socket. The remaining" current wire of the circuit is rigidly secured to'one of the leaf springs, but -I wish it to be understood that the same can be readily attached to both leaf springs and depends entirely upon'the amount of'current to be fed to the branch circuit.

In the modified form of my invention I I show i have shown a more simple construction which can be manufactured at much less expense. In this form of my invention I have provided an elongated insulated-bushing 22 having an enlarged lower end portion 23. The bushing 22 is provided witha longitudinally extending bore 24 through which passes one of the current wires 25 that has its extremity extended beyond the upper endof the bushing and flattened so as to rest thereupon. Thus it will be seen thatI have provided an'enlarged portion for engagingthe contact button of the socket Passing aroundlthe enlarged end portion 23 of the bushing is a middle portion of a substantially U-shaped spring 26 that terminates in laterally extendingend portions 27 that'form contacts that engage the threaded bore of the socket. This U-shaped spring is rigidly secured to the bushing by means of bolts, one of which is'firmly connected with the remaining current wire 26.

O bviously, various changes could be made in certain parts of the apparatus by one skilled in the art without departing from the spirit and scope of the invention and for this reason I desire not to be limited to the precise arrangement and construction of parts] as disclosed.

What I claim and'desire to haw tected by Letters Patent of the t I States is:---

In a device of the character describ I two part block bolted'together, one-tot parts being formed with a pair of spa 1 lugs for spacing the parts, leaf springs c having one end secured to ,a lug and its oi; end formed into a contact and a button.

cured to each spring and working betwez said parts.

In testimony whereof I affix my signatm in presence of two witnesses.

PHILIP STRUUR Witnesses:

DoN MILLS, ETH'EL ALDEN Smotm

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