US973898A - Binding-post. - Google Patents

Description

A. F. WALLBILLICB,

BINDING POST. APPLICATION FILED 31117322, 1910.

Patented Oct. 25, 1910.

- UNITED STATES PATENT OFFICE.

ANTHONY F. WAIQLBILLICH, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THEPER- KINS ELECTRIC SWITCH MFG. COMPANY, OF BRIDGEPORT, CONNECTICUT, A COR- PORATION OF CONNECTICUT.

BINDING-POST.

PatentedOct. 25, 1910.

Application filed June 22, 1910. Serial No. 568,363.

. the following is a specification.

My invention relates to binding posts and particularly to a combined binding post and switch contact for rotary swltches, the object of my invention being to provide an improved device of this character which is not only cheap and easy to manufacture but also stronger and, more efficient than the type commonly employed.

In the accom anying drawings, Figure 1 is a plan view of a blank from which a binding post embodyin my invention may be formed; Figs. 2 andB are a plan view and front elevatlonthereof; Fig. .4 is a vertical section on the line 44, Fig. 3; Fig. 5 is a plan of the blank for a modified form in which the switch contact is located ata lower level; Fig. 6 is a perspective view thereof; Fig. 7 1s a vertical section thereof corresponding to and Figs.\8. and 9 are vertical sections of aswitch base showing both types of post mounted thereon.

In the form shown my improved binding post comprises anupright standard or frame portion A perforated at a and a boss pressed up from the metal to form a hub which is threaded to receive the binding screw B.

The base of the standard is extended to form the switch contact 0 which is angled up to substantially horizontal position as shown,

so as 'to lie in the plane of a rotary switch blade in customary'manner. On either side of the standard and joined thereto at their upper portions are le s D and E which are angled backward and form in connection with the standard or frame A, a cliannelin which the wire rising through the perforated switch base is guided to the binding screw. This guiding channel is coextensive with the standard A and in the form shown in Figs. 5 to 8 extends down to the base of the post. It will be noted that this channel is substantially-the width of the head of the binding screw so that the vend of'the wire, whether it be wound around the stem of l the screw B or not, is sure to be'clamped between the frame and the head of the and binding post comprisin of, integral lateral W1 increased if the lower portions be slightly offset inwardly sothat they more closely approach the wire hole in the base M.

The lower ends of the legs'are enlarged and angled outward to form feet G-H which are perforated to receive securing screws passlng through the 'base of the switch.

This binding post isnot only cheaply manufactured, since its blank may be readily struck from sheet metal and bent to shape, but it is also much stronger than the switch posts in common use which aresecured by lugs lymg in the plane of the switch con tact blade. The latter are frequently bent by the pressure exerted in clamping the bmdmg' screw on the wire, and this may throw the contact blade out of the plane of travel of the rotar switch blade. On the contrary the legs and E being angled backward from. the plane of the frame A and lyin substantiall parallel to each other an at right ang es to the frame A, the pressure upon the blnding screw is transmitted to the legs D and E and is there met. by the 'tensional strength of the width of said-legs. Furthermore the channel formed by the legs D and E in connection with the The details of construction shown ma be variously modified without departing the scope of my invention and I do not limit myself to the precise structure shown.

I claim as my invention:

1. An integral combined switch contact a vertical frame portion with contact bla e offset from the base thereof at right angles, said frame being pierced by aperforatlon threaded to receive a binding screw, supporting 1e s 0&- set at right angles from the sides 0 said frame and formin with the latter a wire channelin which t e head of said bindin screw lies, together with foot portions 0 set at ri ht an les from the base of said legs and per orate to receive securing screws.

--2. A blank for a combined switch contact and bindin post comprising a eran extension theres on each side-of said frame adapted to e angled over to contact blade forming form :1 channel el'nbrncing the binding screw In tesiilnony whereof I have signed my threaded into the perforatlon 1n the frame, name to this speclfication, 1n the presence said s1de portions being enlarged at then. of two subscribing witnesses.

free ends and perforated to receive secur- ANTHONY F. VVALLBILLIGH. 5 ing screws, said free ends being adapted to WVitnesses:

be angled over to form supportlng feet, sub- GEORGE B. THOMAS,

stantially as described. H. U. BADEAU.

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