US1254812A - Electric-switch casing. - Google Patents

Description

c. 1. KLEIN. ELECTRIC SWITCH CASING. APPLICATION FILED DEC. 3, I913JRENEWED JUNE 25.1911- 1,254:,812. Patented Jan. 29, 1918.

CHARLES J. KLEIN, OF MILWAUKEE, WISCO MFG. (.70., OF MILWAUKEE, WISCONS NSIN, ASSIGNOR TO THE CUTLER-HAMMER IN, A CORPORATION OF WISCONSIN.

ELECTRIC-SWITCH casino.

Application filed December 8, 1913, Serial No. 805,291.

To all whom. it may concern Be it known that I, CHARLES J. KLEIN, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of \Visconsiu, have invented new and useful Improvements in Electric Switch (-asings, of which the following is a full,

clear, concise, and exact description, reference being bad to the accompanying draw ing, forming a part of this'specification.

This invention relates to casings for switches and the like, and more particularly to improved means'for securing covers to surface switch bases.

One of the objects of the invention is to provide improved means'for fastening a resilient cover upon a switch base. Further objects will be. pointed out hereinafter;

In order that the invention may be more clearly understood I have illustrated .two embodiments thereof in the accompanying drawing. It is to be understood, however, that various additional modifications are possible without departing'from the spirit of the invention or the scope of the appended claimsf In the. drawing, Figure 1 is a side. view of a switch base with a cover mountedthereon, the'parts bein )artiallv broken awav to show one set of the latching means.

Fig. 2 is a. side-perspective at an angle to Fig. 1.

Fig, 3 is a top view partially broken away to show the relative arrangement of the. latching means.

Figs; 4. 5 and 6 are similar views of a modified form of 'latching means.

A base 1, of porcelain or other suitable material, has a switch mechanism mounted thereon with a reciprocative push bar 2 extending across the same. A resilient cover incloses the switch 3 of conventional design upon an annular mechanism and rests shoulder 4 of the base.

The base is provided on opposite sides with bolts 5 having angular heads 6. The

- shanks of these bolts are threaded to receive egtgnding radiall t efl'at surface 0 the base and rest upon an nuts 7 countersunk in the under face of the base. The heads f the-bolts form lugs outwardly and parallel to annular wall 8 of the lat r. On op' osite sides .of the cover 3 are 'arginal sots 9 adapted ,to fit over the reciprocating push Specification of Letters Patent.

="pression of the sides of the Patented Jan. 29, 1918. llenewed June 25, 1917. Serial No. 178,925.

bar 2 of the switchfmechanisn'i.. Small cir cular openings 10 are also provided in the cover on opposite sides-spaced from its margin and from the slots 9 to register with the. bolts 5 in the base. Marginal notches 11 so are cut in opposite sides of the cover in vertical alinement with the openings 10 to facilitate the attachment of the cover to the base.

The cover is mounted upon the base by 5 direct attachment when the slots 9 register with the push bar 2 and the marginal notches 11 rest upon the Inga 5. Further straight pressure upon. the cover forces the side wallsof the latter to yield outwardly So that the metal above the marginalnotches 11 slips over the beveled ends of the bolt 1- heads 6 until the lower edges of the openings pass the. tips of the bolts and the cover shops to its normal circular shape with the lugs 5 fitting within the openings 10. The cover is thus locked against separation and relative rotation. Removal of the same is readily obtained. however. by radial comeover at right 8!] angles to the openings 10. Such compression causes the side walls of the cover toes sumo an elliptical shape whereby the walls about the openings 10 are expanded and released from engagement with the lugs 5. at The rim of the cover intermediatethe openings 10 is spaced from the annular wall 8 of the base so that the same is free to move inwardly under the radial compression described.

In the embodiment of the device shown in Figs. 4, 5 and 6 the base is p ovided on opposite sides with bolts 12 having circular beveled heads 18. The cover designed for use with this base has segmental openings 14 on opposite sides correspondingly located to the bolts 12. These openings are slightly spaced from the cover margin. and have their straight sides, parallel to and toward the edge. luide notches 15 are also cut into the edge of the cover directly below the openings 14.. The manner of attachment and release of the cover and base is similar to that already described. Tn the two forms of the'device i lustrated the unyielding lugs are fixed on the base and concealed by the resilient cover when the latter is in place.

What I claim as new and desire to second by Letters Patent is:

1. In a surface switch of the character de- .ter and means for detachably lockin said cover 'to v aid base independently 0 said switch operating lever. said means comprising oppositely disposed recessesin the walls of said cover and correspondingly located rigid lugs secured to said base and fitting into said recesses when said cover is positioned on said base, said cover intermcdi- 'ate said recesses having radial play with respect to said base \\'hercb the same is compressible at points removed from said re'- t'csscs to release it from said lugs. I

In a device of the character described, in combination. a surface having a switch thereon. a cover to be mounted on said surface and toinclose said switch, and latching means for said surtace and cover comprising a plurality of beveled lugs on one and a plurality of correspondingly located shoulders on the other, said cover intcrn'lediate said latching means having radial play with respect to said surface, whereby the same is compressible at; such points to release said latching means.

3. In a device of the character described, in C(Jlllllllltlllt), a circular switch base having oppositely disposed rigid lugs pr0truding therefrom and a resilient cover to be mounted on said base and encircle said lugs,

the extremities of said lugs being bent out wardly at substantially right angles to form hooks, said cover having oppositely disposed marginal slots adapted to reccive the reciprocating push bar of an inclosed switch mechanism and also having oppositely disposed openings spaeed from its margin and from said slots, the extremitiesof said In s being adapted to coact with the sides of said openings to lock said base and cover together, said cover intcrn'iediate said openings being free to move inwardly over said base whereby the sides of said openings may be withdrawn from engagement with said lugs to release. said cover.

-l. In a device of the character d'escr ibed, in combination, a circular base having an annular shoulder, a switch mechanism on said base, having a reciprocating operating member, a resilient cover to inc-lose said switch mechanism and abut said annular shoulder of said base, and latching means to releasably lock said cover to said base, said means comprising oppositely disposed beveled shoulders on said base and correspondingly located recesses in said cover, the sides of said cover intermediate said recesses ha ving radial play with respect to said base whereby said cover may be compressed at points removed from said recesses to releaso the sides of the latter from said shoulders.

5. in a device of the character described, in combination, a circular base having an annular shoulder, a switch mechanism on said base, having a reciprocating operating member, a resilient cover to inclose said switch mechanism and abut said annular shoulder on said base and latching meansto releasably lock said cover to said base, said means comprising a plurality of rigid bcveled shoulders on said base and correspondingly located recesses in said cover, the edge of said cover in line with said recesses being notched to facilitate attachment of said cover to said base.

In witness whereof, I have hereunto subscribed my name in the' presence of two witnesses. CHARLES J. KLEIN.

W itnesses:

L. A. WATSON, F. H. HUBBARD.

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