US1032767A - Electric switch. - Google Patents

Description

J. G. PETERSON.

ELECTRIC SWITCH.

APPLICATION IILED 001210. 1911..

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' @QL r Patented July 16,1912.

JOHANN G. PETERSON, 0F HARTFORD, GONNEGTICUT.

ELECTRIC swircn.

To all whom it may concern:

Be it known that I, JOHANN G. PETERSON,

a citizen of the United States, residing atl r1`his invention relates to electric switches,

the object of the invention being to provide an article of this character which is simple in construction and effective and certain in action.

The device possesses other features of advantage and novelty which with the foregoing will be set forth in full wherein I will outline that form of embodiment of the invention which I have selected for illustra-l tion in the drawings accompanying 'and forming part of the present specification, this disclosure being primarily provided to enable those skilled in the art to practice the invention. From the observation just made it will be clear that I do not restrict myself to said showing; I may depart therefrom in several respects within the scope of the in.

vcntion included in Vthe claims `following said description.

Referring to said drawings: Figure 1 is a sectional view of a switch including my invention. Fig. 2 is a cross sectional view on the line 2- -2 of Fig. 1. Fig. 43 is a sec-` tional diagrammaticl view of the carrier, rocker, locking plate and certain afl'gunctive parts showing by dotted lines certain actions which occur in the operation of the switch as will hereinafter appear. Figs. 4- and 5 are detail views partly in section and partly in elevation of the carrier, rocker and ,locking plate in different positions. Fig. 6 is 'a sectional view of the rocker, and, Fig. 7

is a face view of the same.

Like characters refer to like ,parts throughout the several views.

The' different parts of a switch involving my invention, except as to the push' buttons, are inclosed in a boxing or casing such as that denoted in a general way by 1() to the top of which there may be connected as shown a bracket 11 which directly sustains the several moving parts of the switch and which as is customary may be in the forni f a yoke, the side branches of which carry a spindle 12.

Loosely supported by the spindle 12 is an approximately yoke or U-shaped member 13,

Serial No. 655,449.

, the arms of said member 13 being sleeved upon said spindle in the construction shown, at points outside the bracket 11 and being engaged by washers11 held by pins each denoted by 14', which pins prevent accidental longitudinal movement of said spindle and therefore displacement thereof. One of the upright branches of said element 18 is provided with blades or arms 15' and 1G cooperative with contacts v17 and4 18 fastened within the body of the case 1 0 which is usually made ofsome insulating material such as any of the compositions now familiar in the art. Lead wires (not shown) are connected with these contacts 17 and 1S. and it will be understood that when the blades 15 and 16 bridge the two contacts the circuit controlled by the switch will be closed, said circuit being illustrated asopen in Fig. 1. The part to which blades such as 15 and16 are connected is usually known as a carrier, and the member 13 will, therefore, be hereinafter termed such or as the switch proper or circuit closing instrumentality of the switch.

It might be desirable at this point to indicate that although the invention is shown incorporated in a push switch it maybe ein ployed with equal utility in other kinds of switches. It is customary in a push switchto provide what is known as a rocker and the rocker 19 satisfactorily meets the c`onditions, the body of said rocker, which is practically in the form of a disk having oppo sitely disposed arms 20 and 21 to which the levers 22 and 23 are pivoted, said levers being equipped with buttons each denoted by 24 by, which said levers and hence the rocker can be operated. The rocker 19 has la central opening to rigidly receive the reduced end of the sleeve 25 mounted freely upon the spindle 12, it being understood that the rocker 19 is situated between the branches of the bracket 11. The rocker 19 in addition to the oppositely disposed arms 20 and 21 has a third arm 26 provided with a lug 27 which swings through an arc concentric with the arc through which the transverse portion of the carrier 13 moves. The body Specification of Letters Patent. Patented July 16, 1912, i

Application led. October 19, 1911.

of a coiled spring 2S surrounds the sleeve In Fig'. 1 the parts are represented as oc- I cupying a normal position, the carrier 13 at this time being positively locked against movement; itwill be assumed that it is desired to close the circuit. In this event the button 24 of the lever 22 is manually thrust inward. .As s aid button is thus actuated the arm 2O isfswung down, thereby moving the lug 27 to the right in Fig. 1 and hence carrying the projection 29 therewith vso as to tension the spring 28. When the lever 22has completed its Amaximum inward movement as will hereinafter appear, the carrier 1'3 is released so that thevprojection v30 of the spring, which at this time. -is under maximuniv tension, can act against the transverse portion of the carrier 13 and thereby shift said carrier to causeV the blades 15 and 16 to engage thecoperating contacts 17 and 18 -has oppositely disposed arms each denoted by 32 provided with'outwardly bent lugs 33 and 34 which travel in slots formed in the outer branch of the leg of t-he yoke-like bracket 1l and thereby guide said locking pla e! and alsoprevent the same from moving aterally. The body of the locking plate 3d 3 1 is contiguous to the inner surface of the outer branch of said bracket 11, and its inner surface is engaged or approximately engageable by the stop lug 34 to which reference has already been made. In Fig. 1 the lug 34 is shown engaging the extension or catch portion 36 sc as to thereby hold the carrier 13 inv circuit opening position. As-

the lever 22 is thrustinward in the lmanner already described, the lug 34 as will hereinafter appear will be given a rcciprocation i being first moved -inward a comparatively short distance and then outward and when the maximumoutward movement of said lug 34 has taken place under the primaryaction of the operator, the carrier 13 will bereleased, the spring 28 having in the meantime been tensioned, so that said carrier can be swung over .as already described -by the power of said spring. As intimated it re- -quires a full inward movement of either the lever 22 (or the lever 23) by the appropriate push button to effect the release of the carw29" ofthe spring becomes eifective leasing position by hand aided by' cam mechanism as will now appear, and isrestored or moved to locking positionby the power of the spring so that owing t-o this factV I need employ but,a single spring to operate the blade carrier and locking plate. The rocker 19 is provided with projections 3.7, 38 and 39 which are of substantially circular form and which may as a matter of simplicity and' incXpensivenes s, be' punched from the body of therocker, said projections orlugs being located within the cam slot 35 and acting against cam faces upon the wall of said slot. 1 might remark that these are the cam surfaces and projections that I desire to lubricate. The cam slot 35 has at oneend thereof the inclined surfaces 40 and 41 whichmerge to produce a wedge-like cam. At the opposite end of said slot are inclined surfaces 42 and 43 connected by a fiat face.v

:44 the surfaces 42, 43 and 44 presenting in effect a truncated wedge cam, the two wedge cams being-united by the concave surfaces 45 and 46, the ends ofV which merge into the I respective wedge cams;

In Fi 1 the parts are in one of their normal positions the button. of the lever `22 being out,- while-that of the lever 23 is in. As the lever22 is moved inward to close the cir-V cuit, the lrockerlf) is oscillated thereby causing the projection 38 to ride'along theinclined surface 40 and thus move the locking plate 31 inward, the movement being completed when the projection 38 reaches the apex ofthe Wed epresented bythe surface 44 and 41.as indicated in Fig. 4. ShortlyA after this time the projection 39 will ride against the cam surface 42 as shown in Fig. 5 and as said projection 39 continues to ride along such surface-.42 the locking plate 31 will be moved outward thereby carrying the locking stop or lu'g 34 free of the catch portion 36 as indicated in Fig.' 5. 'In the action described the locking lug 34 is given `a full stroke or a complete reciprocation and during this particular motion the lug 27 will be swung on the inward movement lof the lever 22 alternately beyond the points which it normally occupies. The instant that the lug 34 disengages the catch portion 36, the carrier 13 will be shifted inlthe manner already described and just following this the projection or swinging said lug 27 back :into line with the transthe cani sufface e() `acting on vtwo levers.

verse portion of the carrier 13 so that the rocker 19 is thereby operated and seid rocker 'the looking 'plate 35i will move seid locking plate to Curry the looking lug inwaid and therefore into the ero o1" path of move ment of the eetoh poet-ion 36. in. the slight interval between the points at which the pre jeetion 38 end the projections :mel :irre operating the looking plete the spring is be ing tensioneoL whereby i een subsequently move ,seid locking plate to locking position. On the onposite motion thexeveise action Lilies piece, 1t lieimgg evident that at all times ie locking 'plete is ellectuelly held against ,oeiri entei movement.

in Fig, 3 I have shown diagi'emmatoeilj the fiction.. I have repi'esented in seifl. figure by dotted linee m tlie'uppei part there-o the maximum moverments of the buttons of the Euch button ae will be eienr has two stages' olf movements, the sum of which is suiieient to cause the release of the Camiel? l2. 'u this Fig. 3 said two stages are denoted by the characters .A and B. To release the carrier each button has to meten distance et least coresponding to the, dis tance between the lines C and D to ei'eet the tripping action and in this tripping' action the rocker "19 and hence the projection poi tion 30 of tile spying Aaie slii'tefl tothe ted line posltions in six-loi Fig. 3, the looking plete in the meantime having been releaseii. When the pressure of the ingenis teken 'lfom the button on the right in seid Fig. 3 the spring not on the lng 27 to swing the rockeii i9# to .nomini position and as seid Fsocker thus nieves the projection 3S by eating against :it the bese thereof can move the looking plete 3l downwemi emi henee cause the lug 34. to assume its loe-king Dosition.

Q8 through the projection 30 Wiil 4 five cents each,

'Magee 63,-

iVh'zit I claim is:

eeriei, e looking member .tor suini blade can Iier, having e slot, the Wall of the slot liev- 'ing two Wedge oem pox-tions, und a rocker having; tln'ee projections tions being :adaptent to the sides of one of seid UBS oir' the projecelternately engage wedge eem portions,

end the two other projeetione being adapted to alternetely eng-ege opposite sides of the other 'wedge eem portion the rocker 1s member will be given cations.

y 2. ine switch,

'given a .toll oseilietion whereby the locking two distinct reciprot'oe combination of a blade oai-rief, e looking member for seid blade earner having; two sepaiete oem portions, a

maken provided with eem petione to me; member irst 1n one mea-ns for engaging thereby lnovel the lockdueeion and then in9 the opposite xfiireetion te thereby eiect apply g seid binde eender,

a spring for I eieet to sind looming member,

and meens foi* {,uttingg seid spring under tension in the, inteival between the points at which seid cem poi-tions efe operated.

3., in e. switch, port, 1 bied@ carrier on 1n member the combination o a supsand supggol't, e lool;- foi: the biare carrier: having;

oem slet, the looking' meiniiieif upon one side 'being eont-iguous rocker fitting against l L lowing neme-ai', ine oeleey lievi the eemv portienot seid slot-.to "en in testimony wlieifeo'l'i lWe witneer-ies.y

to seid supoit, ami

eil-lier side injecting ineens ent-:ging esiti sietoi' e 1' el' fzetents,

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