US2015276A - Electric cord connecter - Google Patents

Description

Sept. 24, 1935., LUDWIG ELECTRIC CORD CONNECTER Filed March 27, 1954 INVENTOR. Lou/ s Ludw/y BY A ATTORNEY Patented Sept. 24, 1935 UNITED STATES FATENT' OFFICE ELECTRIC CORD CONNECTER Louis Ludwig, Brooklyn, N. Y.

Application March 27, 1934, Serial No. 717,589 2 Claims. (01.173-332) The invention relates to electric cord connecters and more particularly to the methods of manufacturing such devices. It has for its main object to provide a device of extremely simple,

but strong construction which can be made with very inexpensive parts and assembled with a minimum expenditure of labor. Another object is to so construct the device as to remove all danger of the Wires connected with the device coming in electric contact with each other or being pulled out by severe usage.

A further object is to so construct the device as to prevent the contact blades, as well as the contact prongs, from getting out of proper l5 alignment. A still further object is to provide a device to which. it is easy to attach the electric wires and Which is easy to assemble or disassemble.

These and various other objects and advantages will be readily understood from the following description and from the accompanying drawing of preferred embodiments of the invention in which, however, certain modifications may be made without departing from the scope of the appended claims. In the drawing Fig. 1 is a side elevation of a cord connecter made in accordance with the invention,

Fig. 2 a crosssectional side elevation of same taken on line 22 of Fig. 5,

Fig. 3 another cross-sectional side elevation taken on line 33 of Fig. 5,

Fig. 4 a bottom view of Fig. 1,

Fig. 5 a bottom view of the cap of the cord connecter,

Fig. 6 a top View of the housing of the cord connecter,

Fig. 7 a plan view of a certain member used in the device, and

Fig. 8 a side elevation of a slightly modified 4o connecter.

Referring now to the drawing, the connecter consists of a housing It] and a stationary cap ll. Two bosses I2 and it are molded in the inside of the cap and to these bosses a yoke Hi is se- 45 cured, preferably with so-called drive-screws IS.

A pair of contact blades l6 and H are also secured to the yoke by these screws. The yoke, as well as the cap and housing, is made of insulating material, and the yoke is preferably made in the shape shown in Fig. 'I.

The housing is made with an interior, concen tric boss I8 and tworecesses I9 and 283 in which the contact blades 16 and H are inserted. The cap and the housing are secured together by 55 means of a screw 2| which passes through a hole 22 molded in the boss l8 and which is threaded in a hole 23 in the yoke It. The bottom of the housing is provided with two rectangular holes 24 and 25, through which the prongs 25 and 2'! of an attachment plug 28 will pass to contact 5 with the blades 16 and H.

The cord 29 to which the connecter is attached passes through a hole 36 in the cap ii and the individual wires 3! and 32 of the cord are secured under the heads of the screws 33 and 34 10 in the regular manner. However, the individual wires are first drawn into the slots 35 and 36 which are formed in the yoke M, as shown in Fig. 5. Securing the wires in this manner removes all danger of them being shorted and 15 also prevents them from being pulled out.

The contact blades 16 and H, which are bent in the shape shown in Fig. 2, may be made of very light-gauge material due to the manner in which their free ends 37 and 33 abut against 20 shoulders 39 and it] which are formed in the recesses i9 and 2h. The attachment plug 28 is constructed in the, same manner as the cap H, except that the prongs 26 and 2? are substituted for the blades l6 and H.

In the modification shown in Fig. 8, handle grips ii and 42 have been added to the cap H and to the attachment plug 28 respectively, otherwise the construction is identical with the construction of the connecter just described. 30 The handle grips make the connecter Very convenient to operate.

It will be seen that the yoke l4 serves several purposes in the device. It serves, in combination with the screw 2|, as a means for clamping the 35 cap and the housing together; it spaces the wires 3! and 32 in such a manner as to remove all danger of shorts between them, at the same time relieving the strain on these wires; and, when the connecters are made of soft rubber, it keeps the blades l6 and Il, as well as the prongs 26 and 2'! in alignment, preventing them from being pressed into the soft rubber. While the connecter illustrated in the drawing is shown as it would appear when molded from Bakelite 45 or similar material, when made of soft rubber, it is merely a matter of increasing the thickness of the various walls.

Having described my invention and its objects, what I claim as new and wish to protect by Letters Patent, is:

1. A cord connecter comprising an insulating cap having an interior recess for electric wires and a central opening through which these wires pass, a yoke made of insulating material,

a pair of contact blades having wire connecting means, said contact blades and said yoke secured to the insulating cap by the same fastening means, an insulating housing having openings in one end for receiving a pair of contact prongs, recesses formed in said housing into which said contact blades fit, an opening formed axially in the housing, and a screw passed through said opening and threaded in a hole in the yoke for securing the housing to the cap.

2. A cord connecter comprising an insulating cap having an interior recess for electric wires and a central opening through which these wires pass, a yoke made of insulating material, a pair of contact blades having wire connecting means, said contact blades and said yoke secured to the insulating cap by the same fastening means, an insulating housing having openings in one end for receiving a pair of contact prongs, recesses formed in said housing into which said contact blades fit, an opening formed axially in the housing, a screw passed through said opening and threaded in a hole in the yoke for securing the housing to the cap, and two oppositely disposed slots formed in the yoke to separate the wires connected to the contact blades.

LOUIS LUDWIG.

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