US841993A - Telephone switch-hook. - Google Patents

Description

PATENTED JAN. 22, 1907.

v R. H. MANSON. TELEPHONE SWITCH HOOK.

APPLICATION FILED 1330.2. 1905.

' 0 awentoz witnesses 1 .I I a I.

Terra .a'r orrron.

RA n. MANSON, or ELYRIA, onio. ASSIGNOR- TOTHE DEAN ELECTRIC COMPANY, or ELYRIA. onio, A CORPORATION or OHIO.

TELEPHONE SWITCH-:HOOK.

To alt whom, concern/.- 7

Be it knownthat I, RAY H. MANSON, acitizen ofthe United States, residing at Elyria,

Y in the county of Lorain and State of Ohio,

have inventeda certain new and useful I1np'rovement- Telephone" Switch- Hooks, of

Which-the following is aspecification, refer ence being-had thereinito the accompanying drawings;

I My invention relates to electrical. switches of the typeused in telephones; andit'espepcially relates :to the switch-lever used in con' I nection therewith.

The'object of the invention is to providea I .ever 'which'will be neat-in appearance, of sufiicient structural. strength to stand the wear and tear. of ordinary use, and may be manufactured at a relativelylow cost;

A further ob'ect'of. the intention is to providea switch-lever by stamping it-from a single sheet ofmetal and thenfoldin'g it so that its body and legs are of double thickness and in the. desired shape. w 1

The particular type .of switch usedv in connection with r ny device forms no part of my invention; but I-have illustrated and.will describe a switch similar tothat shown inmy application, Serial-No.,. 200,899, filed Marc 31, 1904, and allowed September 30, 1905.

tion, in which.

Figure 1 is a'side view of the switch-support ing frame with .the lever mounted thereon. Fig. 2 is a bottom plan view of the lever. Fig. 3 is a side elevation thereof. Fig. 4 is a detail of one of the legs. Fig. 5 is a sectional view on line X X of Fig. 4; and Fig. 6. is a plan view, on areduced scale, of the blank as it is, stamped out preparatory to folding.

'Referring'to the drawings, 1 represents a metal frame or support which is attached to the wall-set casing of any suitable material Specification of Letters Patent. v Ap lication filed December 2,1905. sci-a1 No. 290,039.

.vention. horizontal flange or table. 2, upon which the of a notched ear..14, which is Patented a... 22, 1907.

and not This frame ,1 is provided with a switch-springs 3 are mounted, and at its outer end with a pivot-post 4', forminga pivotal .point for the. stub-lever 5 and for the main hook-lever 6. The stub-lever 5 is provided with two transversely-projecting tongues 7 and 8, the former of which is slotted to receive the insulated end of the operatingspring 3 of the set. The tongue 8 is made to engage a notch formed by ears 9, and 10, the

shown, as it forms no part of my in' latter of which is provided with a cam-face 11, which depresses the tongueS and theforward end' of the lever 5 when the main hookleveris pushedinplace. An actuating-spring 12 is secured to the top of the table 2 tends around underneath and engages 20, formed in the lower-side of thestub-lever and forward of the pivot-post 4', so as to normally force the tongue 8 into engagement with and to raise the main lever 6. All the above is describedandclaimed in my applithis invention.

cation mentionedbefore and forms no part of and ex anotch- In Fig. 6 I have shown the main switch- I lever 6 as it isstamped from the sheet metal preparatory to folding. It comprises a rela tively long shank 13, having at one end thereposed to the right ofthe median line y. At, the opposite end of thefshank the, body is bifurcated to form .separatelegslfil and 16, both of which, havetheir ends broadened out preferably disto substantiallyl clo'ver shapes, eachleaf; be-

ing punched outgto formfapertures 17 for the reception of suitable annularriv'ets 18. .On' the right side of themedian line 1 and near. the middle of the shank 13, are two ears or lugs 99 and 10, which form a notch 20, which is engaged whe'n 'inoperation b the tongue 8 of the stub-lever 5. One or oth, but usually only one, of the ears 9 a'ndlOis provided with a cam 1 1, previously described.

The blank is. now taken and by suitable pi'essure is folded along the lines '9' z, so asto don ble the -thickness substantially throughout the entire length of the shank and thele s and so that the apertures of each clovens -aped end coincide. in the aperture 17 oieach leg 1 59nd l6 and by any suitable means are upset to clamp the two folds of the legs together: The devieeis The rivets 18 are now inserted see 'now ready to be polished and plated, after which it has the appearance of a finished cast switch-hook.

It will be clearly understood that I could use rivets or other suitable connecting means for the folds of the legs; but desire to use the hollow rivets or thimbles 18, because it gives the lever a more finished appearance.

struction, which greatly strengthens the hook at the point Where the two legs part from the l'evrproper. This isthe weak part of a twopiece, punched hook, and in a one-piece foldedover hook the prongs are of single thick- ,ness of metal and are weak from the lever out to the ends of the prongs.

Manychanges might be resorted to without departing from my invention, and I consider all such changes well withinthe scope of the appended claims. 4

Having thus described my invention, wl. at

I claim, and desire to secure by Letters Patent,\is

1. A telephone switch-hook stamped from a 'sin gleintegral sheet of metal and having rongs and a shank, said prongs and shank being folded along their length to make the device of double thickness, and a pivotal connection at the end.

2. 'A telephone switch-hook constructed from a single integral sheet-metal blank bent and folded into shape to provide a shank or body and a hook or supporting: prong of double thickness, and a pivotal connection of single thickness at the end of the shank.

3. A telephone switch-hook constructed from a blank having a main body portion 0 adapted to be folded n itudinally and having end portions also to ded longitudinally, said end portions being spread apart to form the prongs of the completed switch-hook. together with a rear portion extending longitudinally from the main body portion and constitutin'g a pivotal connection.

4. As an article of manufacture, a sheetinetal blank adapted to be ,convertedinto a telephone switch-hook, said blank havin a body portion and le s adapted to be folded lon itudinally, said egs being spread apart an curved suitably to provide the completed switch-hook with prongs, together with a portion extending lonaitndinal'lv to the rear of said body, and notched to form a pivotal connection for the completed switch-hook.

5. A telephone switch-hook formed from i one sheet of metal having a body portion and separated legs constituting prongs, said body portion and said prongs being folded throughout their length to double thickness, a pivotal connection at one end of the shank, and a bracing portion at the junction of the prongs with the body.

6. A telephone switch-hook formed from one sheet of metal and comprising a body portion and separated legs constituting rongs, said body portion and said prongs being folded throughout their length to donble thickness, a notched pivotal portion extending to the rear of said body portion, and projecting ears on the shank forming an operating connection.

7. A telephone switch-hook formed from one sheet of metal and comprising a body portion and separated le s constituting prongs, said body portion an said prongs beingfolded throughout their length to double thickness, a notched pivotal portion extending to'the rear of said body portion, and projecting ears defining a notch which forms an operating connection, one of said ears having a cam-face.

8. A telephone switch-hook formed from one sheet ofdlnetal and comprising a bodyportion and separated legs constituting prongs, said body portion and said prongs being folded throughout their length to donble thickness, a notched pivotal portion extending to the rear of said body portion, projecting ears on the shank forming anop ratmg connection, and a brace formed in folding the hook at the junction of the prongs with the shank.

9. A telephone switch-hook stamped from an integral sheet of metal and comprising a shank and prongs, said shank and prongs being folded throughout their entire length to double thickness, hollow rivet-s holding the I ends of the prongs together, apivotal connection of single thickness at the end of tl: e shank, an operating connection comprising projecting ears intermediate the length of the shank,

and a brace formed by iolding the metal at the junction of the prongs with the sh ank.

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

RAY H. MANSON. Witnesses:

GEO. A. Scovru E, EDWIN KRAUSE.

Images