US1728911A

US1728911A - Electrical connecter

Info

Publication number: US1728911A
Application number: US569055A
Authority: US
Inventors: Paul F Williams
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-06-17
Filing date: 1922-06-17
Publication date: 1929-09-17
Anticipated expiration: 1946-09-17

Description

Sept. 17, 1929. P. F. WILLIAMS ELECTRICAL CONNECTER Filed June 17. 1922 Patented Sept. 17, 1929 PATENT OFFICE PAUL WILLIAMS, OF CHICAGO, ILLINOIS EIIECTRIGAL Application filed June 17,

My invention relates to electrical connecters, particularly of the type commonly known as potheads.

One of the objects of the invention is to provide a simple,practical and advantageous construction of device of the class specified.

Another object of the invention is to simplify and improve the connecting devices for connecting the electrical conductors, particularly in a pothead 'device in which there are three tubular insulating members arranged in tandem fashion, the middle one of which is moved relatively to the other two in order to secure together and separate said connecting devices.

Other objects of the invention are to improve such type of pothead construction generally.

In the accompanying drawings Fig. 1 is a longitudinal section of a pothead device of the aforesaid variety embodying my present invention;

Figs. 2, 3 and 4 are cross sections taken respectively on lines 22, 33 and 4-4 in Fig. 1.

Referring to the drawings, I show a pothead device having a lower tubular member 1,

an intermediate cap-like tubular member 2 and an upper cap member 3, all of said members'being preferably made of insulating material such as porcelain.

The lower member 1 is to receive a cable to be connected. Neither the cable itself nor the lower part of the member 1 is shown, as

- the same are well known constructions. The conductor of the cable is shown however, being indicated at 4 and being extended up to nearly the upper end of the member 1 and inserted into the recess in a socket contact member 5 which is arranged at the upper end of member 1. The other member to be connected is indicated at 6 and extends to the cap member 3, where its conductor 7 is inserted in the socket or recess in a contact member 8 carried by said capmember 3. The intermediate member 2 contains a third contact member 9 which serves as a connection between

members

5 and 8, as will be more fully explained.

The member 5 is hel'din position in the arranged on extension 5, and serve as lock CONNECTER 1922. Serial No. 569,055.

nuts therefor. Rotary movement of member 5 relatively to collar 10 is limited by projections 10 on collar 10 and projections 5 on member 5 (Fig. 4).

Member 5' has a threaded socket into which the reduced threaded end 9 of member 9 may be screwed. This threaded end 9 may be adjusted in the threaded socket of extension 5 by turning it relatively to the latter, which turning movement may be accomplished by means of the intermediate member 2. To this end member 9 is provided with outwardly projecting ears or lugs 17 (Figs. 1 and 2) and member 2 with recesses 18, into which lugs or wings 17 may fit, so that member 2 will act on wings or projections 17 and rotate member 9. Rotation of member 9 by member 2 will screw extension 9 into threaded socket of extension 5, and downwardly to such an extent that bottom of extension 9 will strike against bottom on threaded socket of extension 5*, and thus form a good mechanical joint and good electrical contact, member 5 being held to permit such in-screwing of member 9 by projections 5 and 10.

Member 9 has its upper end provided with a threaded socket 20, into which fits a threaded plug member 21 secured to and preferably formed integrally with the contact member 8 carried by cap 3. Upper end of member 21 is preferably made square at 21 to prevent turning in cap 3. Threaded washers 22 and 23 are fitted over threaded member 21 and hold the same and terminal 8 firmly in position in cap member 3. The threads of

members

21 and 9 are of difierent kind, that is one, as 21, is left handed and the other, as 9", is right handed. Hence the rotation of the member 9 by member 2 in one direction will screw member 9 down in threaded 100 socket 5 and will also screw member 9 upwardly on member 21, thereby in effect screwin'g member 21 down in socket 20, as a result of which turning movement in this one direction will screw both

members

9 and 21 into their threaded sockets, and thereby make firm mechanical and good electrical contact. Conversely, rotation of member 2 in the opposite direction will in

eifect screw members

9 and 21 out of their threaded sockets.

Thus it will be seen that connection may be made by first cementing collar 10 in position in member 1 and then passing member 5 up through it, cable conductor 4 having previously been secured in socket member 5 as by soldering. Washers 15 and 16 are then fitted over 5 to hold same in position. Member 2 is then mounted on member 1 and threaded end 9" screwed into socket 5". Conductor 7 of wire 6 is secured to terminal 8, as by soldering, and then plug member 21 is screwed into socket 20. Intermediate insulatin member 2 is then rotated so as to turn member 9 and thereby in effect screw threadwhich the spark takes place in case there is a spark when the circuit is opened by the separation of

contact members

9 and 5. By making these spark contacts removable, they can be readily replaced when worn or torn by sparks and by making them separate from the

main contacts

9 and 5, they may be replaced at very little expense. The sparking will obviously take place between the lower end of member 25 and the upper end or head of member 26 when those members are about opposite and separating from one another, at which

timethe members

9 and 5*.are also separating from one another. To replace the

members

25 and 26 or either one of them when they become worn or used, either one or both are screwed out of their respective sockets and others substituted.

It will be understood that changes and modifications may be made without departing from the spirit of the invention.

What I claim is:

1. The combination of end and interme-.

diate members whereof the end members are provided with conductor terminals and the intermediate member with a connecting member for connecting said terminals, and means for taking up a spark at break, said means comprising members detachably mounted on said terminals.

2. The combination of end and intermediate members whereof the end members are provided with conductor terminals and the intermediate member with a connecting member for connecting said terminals, and means for taking up a spark at break, saidmeans comprising members detachably mounted on said terminals, one of said members having screw threaded connection with one of said terminals and the other having threaded connection with the other terminal.

3. The combination of end and intermediate members whereof the end members are provided with conductor terminals and the intermediate member with a connecting member for connecting said terminals, and means for taking up a spark at break, said means comprising members detachably mounted on said terminals, one of said members being tubular and the other being a pin adapted to fit into said tubular member.

4. The combination of end and intermediate members whereof the end members are provided with-conductor terminals and the intermediate member with a connecting memher for connecting said terminals, and means for taking up a spark at break, said means comprising members detachably mounted on said terminals, one of said members being tubular and the other being a pin adapted to fit into said tubular member, said tubular members having a threaded connection with one terminal and passing through the connecting member and the other of said members having a threaded connection with the other terminal and fitting into a recess in the first mentioned member.

5. A device of the class specified comprising end and intermediate outer members, contact terminals for the conductors arranged within and carried by the end members and a connecting device for connecting said terminals, said connecting device bein connected with the intermediate member For operation thereby, and said connecting device and terminals having means for making end contact with one another, said terminals and con necting device having screw threaded connection with one another and being provided with transverse abutments a ainst which the same may be secured to ma e said end contacts, one of the terminals having a threaded plug portion and the other having a threaded socket portion and the connecting device having a threaded socket to receive said threaded terminal portion and having a bottom against which the same may make contact, and said connecting device also having a threaded plug portion to fit into the threaded socket portion of said other terminal and also having abutments against which the end of said terminal may make contact when said connecting device and terminal are secured together.

\ llie oonnlo a conductor ten inein oei? 9 enter rounding said I ninel seio leer anal sei l teiininel been i cooperating projections in of rotary movement on the part oi mine o '31 The combination of en onite" e oonilneboi" terminal therein, and member Within the outer menil'ier e n so rounding seiol terminal, seicl enn oer enol seiol 'teiininel loeing provideo cooperating projections limiting the ezl of rotary movement on the pen-l", of minnl, the enol portion of seicl be ing threaded and threaded washers engaging seiol threacleol portion of line 'leri'ninel nn& also engaging seidl annular member hold seiol terminal firmly in position;

lln Witness whereof, ll hereunto snbseiilse my name this 12th day of May, A. D. 192.

PAUL F.