US1077746A - Snap-switch. - Google Patents

Description

J`. G. PETERSON.

'y SNAP SWITGH. APPLICATION FILED SEPT. 22, 1911.

Patented Nov. 4, 1913.

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PATENT OFFICE.

I JOHANN :BETEBSON, OF HART-FORD, GONNECTIGUT.

at Hartford, .in the county of Hartfordv and State of Connecticut, have invented certain' new and useful Improvements iii Snap- Switches, of which the following 'is a speci cation.

This invention relates to snap switches, the object of the invention being to `provide a simple and eii'ectve device of this character which can be inexpensively made, .and the .parts of which can be readilyand easily assembled.

A' adapted to be rotated. l, side of the body 2 has In the drawings accompanying and forming part of the present specification I have shown in detail one convenient forni of embodiment of the invention which to enable those skilled in the art to practise the saine will be set forth fully in the following description, while the novelty of the invention will be included in the claims succeeding said description. From such statement it will be clear that I do not restrict myself to such showing. I may depart therefrom in several respects wit-hin the -scope' of my inventioiidetined by the claims following said description. Y .ff

Referring to said drawings: Figure l is a plan View of a base .portionl and parts attached thereto of a snap switch constructed in accordance with my invention. Fig. 2 is a transverse section-.il `view on line 2-2 of Fig. 1 showing iii addition a dial plate and handle or button. Fig. 3 is a detail sectional View on line 3-'3 of Fig. 1. Fig. al is a detail sectional view ofthe dial plate and means for securing the same to the spindle. Figs. 5 and 6 are plan and elevation views respectively of a member hereinafter more fully described.

Lilie characters refer t0 like parts throughout the several figures of the drawings. I,- 'lhe switch ,includes in 'its make Aup la supporting iod'y as 2 which may be made of any suitable material such as wood, porcelain or eonipositioi'i, yand which is perforated for the passage of flic spindle 8 which may be connected!with said supporting body in any suitablev nianner and which as is usual is y 'llic upper or inner a counierboi'e Ll, and in this eounterborc are disposed the ratchetplato/5 and the ratelictl, both of which operato after the usual fashion. l connect Specicatimi of Lettersla'tent.

,ppnjeation-iiieaseymiie'r aaien. seriai'naesogvie.'

SNAP-SWITCH.

,'PatentedNov. 4, 19,13.

in? a novel and advanta eous rnanner las `will :hereinafter appear. d i

'at suitable points uponniits periphery or rim is provided-with downwardlyftiirned prongs or barbs 7 which fare tte'd 'in holes somewhat expensive procedure and itis not altogether always satisfactory. To elimi- 'I punch from the ratchet 6 several preferably circular lugs 8, four of which are shown, although this number is` not essential. .These lugs or ears f8, asiwill be clear, are integral with the ratchet, and they are in sizea little more than half a circle, being punched or otherwise projected into perforations or openings in the ratchet plate 5 so as to rigidly and firmly connect said ratchet plate and ratchet. `The spindle 3 is furnished with the customary cam 9 and coperating locking-plate 10, the 4latter of which co-acts with the ratchet 6 in the well-known manner, in view of which it is unnecessary for me to describe this action.

.The body 2 carries two sets or pairs of binding posts, each of those of one set being denoted in a general way by 11 and each of those of the other set being denoted by 12.v The only practical difference between the two sets or pairs ot' binding posts is in their size. I'miglit also state that the two binding posts 1l are disposed approximately dianiotrically opposite each other and that the two binding posts l2 are situated in similar relation, all of them being sustained by the body 2. fl will describe in detail one of thc binding posts 11 which is a duplicate, as will be gathered, of the other. The binding post l1 involves in its organization the plate 13 having oppositely vdisposed reduced portions 14 and 15, the reduced portion 14 extending downward from the body of said plate, while the reduced port-ion 15 eXtendsupn-'ard from said plate. The downwardly extending reduced portion 14 projects through a slot in the body or web portion of an angular plate 16 wv ch body fits flatwise against the upper or inner sui-face. of the supplgrting body v`2 and is equipped with the divnturned lug 17 ada t. cd to extend into said body 2. To rivi ly connect. the plate 113 with the body o? the angular plate lo said reduced portion lll plate and ratchet "by riveting. :This 1 a theratchet@ plate and .ratchet "6,l however,

. he ratchet plate in the bottom ofsaid 'eounterbore 4. 'lIt has been customary to connect 'the ratchetnate the. disadvantages of a riveted union' lll) after it has been passed through the slot in lugs 18 engaging said plate 16 for such' purpose. It will be understood that the supportin body 2 has a cavity or hole toire i ceive' t is reduced portion or neck 14. Ex-

tending through the supporting` body 2 is a screw 19 which is in threaded connection with the body of the angular plate 16. Fitted around the upwardly extending reduced 4portion 15 are the shanks or butts of the spring contacts 20 which are separated from each other by a spacing member 21, the upper portion of said reduced extension 15 being headed over the spacing' member 21" on the upper or 'outer spring contact 20, as at 22. These spring contacts at their inner oractive ends are of familiar construction, so that it isnot necessary for me to describe the same in detail. I

Tapped through the vfiangeor upstanding portion of the angular plate 16 is a binding screw 23 about which wire-is wrapped so as to' electrically connect said wire with the binding post 11. The said flange is shown provided at opposite sides of the head of said screw with lugs 24C, and I might say at this point that it is not uncommon to arrange lugs at opposite Sides of a screw head,- the function of saidilugs being to hold said wire in electrical connection with the screwfincase said vwire is not coiled properly aboutthe shank of the screw. It has-been usual, however, to make theselugs straight and 'when a wire has been inserted between one lug and the adjacent. screw, the

tendency has been to jam the screw against the opposite lug, and itfollows that there will be but a single point of contact between -saidihead and said opposite lug, so that the result is to bend the screw or even dislodge of circular `or arcuate form, and this I can it. The inner surfaces of the lugs 211 are secure by curving said lugs, and said surfaces. are preferably upon the same or approximate y screw head, so that when saidhead is forced against a 1u it will find a firm and substantial bearing thereagainst, the lue partially embracing the screw head and t ereby eliectuallyresisting motion thereof.

Referring now-to the binding posts 12.' A detail description of one of these osts, will, of course, apply to the other as they are of simil-ar construction. "The binding post- 12 comprises a plate 25 of substantially vT form, the shank of which is passed through a plate 26, the connection between the shank of said plate 25 and 26 being identically like that described in connection with the plates 13 and 16 for which it is unnecessary for me' to repeat such description. The plate 26 the same radius as the adjacent l upper spacing member 27 surmounted by' the shank ofthe spring contact 28 whic l also lits around the body of said T-'like plate 25, the contacts 28 being exactly like the contacts 20, although'nearer to the uppe'r surface of the supporting body 2. I might" indicate at this time that the contact springsr 2O coperate with one set of blades,

whirl; the contact springs 28 coperate with a other set of blades rotative withI the spindle 3, as will hereinafterappear. The upper contact 28 also bears against thef head of the Tshaped plate'25. v y

Resting on the cam 9 is a carrier plate 30 constituting part ofa commutator which which will now be described. It is not necev c essary for me to describe in detail ythiscarrier plate as the same is of common conf struction in snap switches. Supported.byv the carrier plate is an'msulating odysuc vas a washer 31 whichmay be of any s u t, ,able material such as ber, and superim# posed uponthis fibrous insulation is a plate or disk 32 provided-withv outwardly extendspring vcontacts 28'already described. In?l closed by the plate 32 is insulation 34 which may be of fibrous material. Supported by the insulating washer 34 and the plate vl2 is an insulating washer 35 upon which is 'ing-blades 33 which coperate with the mounted the plate 36 inclosingthe linsulating washer 37, said'plate 36 andcwasher 37` being sui-mounted by a washer 38, the commutator composed of the two plates and sev eral washers having yopenings' or perforations throu h which the rotary spindle 3 extends.` Tlie upper plate 36 has oppositely disposed Y approximately right angular' blades 39, the outwardly extending branches lvofwhich coperate with the spring contacts 20. It will beunderstood that when the blades 39 bridge the two sets of spring contacts 2'0 that said contacts are electrically connected, the blades 33 at this time bridging the contacts 28 situated in a different plane.

The commutator already described in detail is surmounted by a top plate 40 which ing through the several plates and'washer of the commutator and also throughjhe carrier plate 30, said lugs being upset or headed at 42 at their inner ends so as to rigidly connect the several partsv of the commutator.

`of said. commutator and through these bosses, the lugs 4.1 extend, and by reason 'of rsa has 'downwardly extending'lugs 41 projectv sion of the spring can be regulated. The

upper end of the spring 44 bears against a lug 45 on the dial carrier 46 which supports the dial 47, the *vo parts being perforated to 'receive the spindle 3, and said dial and dial carrier being connected together by lugs 48 punched from the dial -and extending through slots in the dial carrier. The outer or upper end of the spindle 3 is threaded to receive the button or handle 49 by manipui lating which the said spindle may be turned,

so that through the intermediate parts, the spring 44 will be tensioned and subsequently released after the usual fashion to move the several contact blades into and out of electrical connection with the cooperating spring contacts. Said handle 49 by reason of its threaded connect-ion with the vspindle 3 firmly" presses together the dial-carrierv 46 and dial 47.

What I claiinis:

1.1 A switch comprising a supporting body, a plate litted against said body and provided 'with a down-turned lug the supporting body having an opening to receive,

said lug a screw extending through said body an engaging said platc,a second plate, the first plate having a slot and the second late extending through said slot and havmg projections engaging the under surface of the irst plate, and contact members car-- ried by the second plate. s

2. An electric switch provided with a commutator comprising superimposed plates and insulating washers, a carrier for said commutator, and a crown plate snrmounting the commutator, provided with approximately diametric'ally opposite lugs extending through tlie plates and Washers of the commntator, and also. through the carrier for holding'. said commutator parts and carrier in assembled relation.

3. A switch comprising av spindle, a commutator connected with said spindle, a

5o crown p late surrounding said s indle, a dial and a dial carrier also surroun ing the splndle, a spring coiled about the spindle, one end of sald spring bearing against said dial carrier, said crown plate having several lugs adatped to interchangeably receive the other end of said spring 4. An yelectric switch comprising a slipporting body, a plate fitted against said v body, means for connecting said plate withthe supporting body at two different points to prevent rotation thereof, a second plate,

the first plate having aslot and the second plate extending through said slot and having projections staked4 from its side edges, engaging the under surface of the first plate, and contact members carried by the second plate.

5. A body, a plate fitted against 'said body'and provided with a down-.turned lug, the supporting body having an .opening to recei"e said lug, a fastening member` for connectii g the plate with said supporting body, a second approximately flat plate, the first plate having a slot and the second plate extending vthrough said slot, and having projections switch comprising a supporting staked therefrom engaging the under sur- V tace of the irst plate,the supporting body havinof an opening to receive the staked ortion ori the tirst plate, and contact members carried by tlie'second plate.-

6. A?l switch comprising a `supporting body, a plate secured to said body a second plate, theA first plate being slotted andthe second plate having a downwardly extending portion snugly iitted in and extending through the slot of the first plate, the second platehaving integral projecting means engaging the under surface of the first plate, and contact members carried by the second plate. f

In testimony whereof-I affix my signature in presence of two witnesses.

v JOHANN G. PETERSON. Witnesses:

HEATH SUTHERLAND,

F. E. ANDERSON.

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