US1013990A - Electric switch. - Google Patents

Description

NITED STATES PATENT DFFICE. y

JAMES ERL DU v A'L, 0E EoWIE, frEXAs, `Assrcnvon or ONE-HALF To EznA. A. LEE, 0E

EOWIE, TEXAS.

ELECTRIC SWITCH.

To all urhom` it may concern.'

De it known that I, JAMES E. DU'VAL, a citizen of the United States, residing at- `Bowie, in the county of Montague and State ot' Texas,- have invented certain new and useful Improvements in Electric Switches; and i do hereby `declare the following to be affidi, clear, and exact description of the invention, suchas will enable others skilled in the art towhich it appertains to make and use the same.

This invention relates to switches or connections for coupling the sections of a line wire used in connection with telephones or telegraphs; and it consists in the novel construction and combination of the parts herel inafter fully described and claimed.

In the drawings, Figure l is a longitudinal section through a switch ory coupling constructed according to this invention. Fig. 2 is a cross-section through the switch, taken on the line -w in Fig. l. Fig. 3 is a longitudinal section through the switch taken on the line in I S`ig. 2.

A and B are two sections of an electric line wire, such as a telephone Wire, and the switch is provided so that these sections can be disconnected at will, for instance when a thunderstorm is impending.

C is a metallic case which is preferably cylindrical, and c is insulating material in- 'elosing the said case. One wire section A is eoiinected to one end of this case which is closed, and D D are two fiat contact springs secured upon opposite sides ot' the other and open end oit' the case and extending With-- in it. Q

l) isy` a pin securedrcrosswise inl the case and arranged in the space between v,the free :ends ot theii'springs andthe closed end ot the case. v f

if is a lat ineta'ilic bar having a hoolef at l one end, and,having the other wire section B "secured toits other end.

(l (l are two narrow curved springs secured to the opposite edges of the bar F, at the, niiddie` part ot its length, l,with theirI tref( ends projecting toward` theifook. 'llhe end pin-tion ot` the barliiadjacentto the lwire is inelose'il in insulating material (j.

'lhe end portion ot thebar beyond Lhe'hook Specification of Letters Patent.

Application filed May 12, 1911.

PatentedJan. 9, 1912.

serial No. 626,804.

is tapered and rounded over, so that when the bar is thrust between the contact springs D into the case, the hook slips into engage- Vment with the pin E. The insulating nia-- terial prevents the current from flowing from the wire sections through the hands in operating the switch. The hook is disengaged by pushing it farther Within the case and then tilting the bar F against the pressure of one of the springsGr suiiiciently to enable the hook to be withdrawn past the pin. The springs Gr normally bear against the case and prevent the bar F from tilting accidentally, and the contact springs D bear against the tlatsides of the bar and guide it into engagement with the pin and also insure a satisfactory contact for the passage of the electric current from one Wire section to the other. The springs G Work in the spaces in the case' between the contact springs D.

1. The combination, With two line Wire sections, of a case secured to one section and provided with a pair ot contact 'springs and a pin arranged crosswise of the case, a bar secured to the other wire section and provided with a hook for engaging with the said pin when thrust into the case between the contact springs, and springs secured to the edges of the said bar and bearing against the case. l

2. The v:oinbinat-ion, with two line Wire sections, of a case having one end secured to one section and having a pair of flat contact springs projecting within it from its other end, said casing having also a pin arranged crosswise of it, a flat bar secured to the other wire section and provided with a hook for engaging with the said pin when thrust into the case between the contact springs, and springs secured to the edges of the said bar and bearing against the case and working in the spaces between the said contact springs.

In testimony whereof I have affixed my signature in the presence ot two witnesses.

. v J A M ICS ERL DU VAL.

Witnesses O. (l. Rosa, JoiiN licnn.

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