US1047575A - Electric switch. - Google Patents

Description

P. SCHNEIDER.. ELECTRIC SWITCH.

l APPLICATION FILED JUNBB. 1911. 1,047,575.

Patented Deo. 17,1912.

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a citizen of the-'Unitedl States, and a resident of Cleve1and,co`unty of Cuyahoga, and State (if/Chio, haveainvented a new and useful Improvement in Electric Switches, of which the "following is a specilication, the printinguish it from other (inventions.`

ciple of the inventionbeing herein explained and the best mode in which I have contemplated 'applying that principle, so asto disfMy invention relates to switches for lthe `'ifcontrollof"electric circuits. -Its general ob- 'ject is the prrwisioxnofu compact' switch 'mechanism which may beconveniently operated t.o close the circuit to'be controlled,.

andwhich willz'keep the circuitvclosedV untill it is further operated, whereupon it will in-l;

stantly move to a position opening ,the `Circuit..l

i Other objects of they invention will appear from the detailed description.

To the accomplishment ofthis andrevlated ends.l said invention, then, consists of `the steps and means vhereinafter fully described and particularly ,pointed out in the. claims.

' The annexed drawing" and the fllowing description set forth in detail certain mechasof f disclosed" 'means constituting, however, but

nismvv for *carrying on the invention, such one of various mechanical forms in which the principle of the Yinvention 'may bel used.`

"In lsa-id annexed drawings Figure 1 is a section of `the switch, one partbroken away and showinga block ot' insulation in j white, for the sake'of clearness; F ig. 2 is .a section on the line B--B in Fig. l, the

` line A-A in Fig. 2indicating the planeof the section of Fig. 1; and Fig. 3 illust-rates ja modification in section corresponding to ,that of Fig. 1.

The switch may be conveniently used to.y

control the operation of such tools as elec trically operated drills, or similar tools,

` though, of course,this isnot its only use,

but -it =may be adapted to practically any desired use.

T he switch comprises a casing 1 in which are mounted twospaced bldcks 2 of insulating material, which will preferably be of disk shape. Mounted on each block-2, are two contact members 3, the Contact members on one block lying opposite the respective contact members on the other block., Coned naait, '1.912.

*i rarest nected with the contact members son yone block aretwo lead, wires Il, designed' to'be connected with the source of electricity, and connected with the contact'members `on 'the other block are two lead wires 5, designed lto be 'connected'with the tool tobe operr ated. A shaft 6 is secured in the casing, 'substantially ,at its center, anden this shaft are rotatably secured two disks?- of 'insulatmg material, whichare spaced apartgby-L two substantially diametrically. opposite blocks 8, ailso'of-insulatingmateriah T hrougheach oft-hess blocks 8 extendsapin 9 ofl conducting v.1`i iate1'ial, ',and these are designednin one rotative position'o/the ldisls,t o Contact with V he respective. pairsofrcontacts 3. Aniembervl'() is reciprocablyl held in the from which extends, vvinfthed irection`-n length, a slot, 12. i A link 13J ispivoted' to the member 10 on a pin 14, andA to thedisks 7,' eccentrically oftheir axis, on a pin 115. 'A bolt 16 is movable 'at 'right angles to the member 10', and bears a projection 17 extends through the slot 12. A 'spring 18 pushes the bolt 16 agam'stxthe membelA 10,1,

and when the recess 11 is brought into register with thebolt 16, the latter "is adapted, L.y

to enter the recess. l spring" 18 may be varied' bythe screw 19. .v "Reciprocabl'e in the casing, in axidirection parallel to the direction O iin'vement fof member 10, fis a second memberV 20.` L This member isprovided with Va cam, surface121, and the projection 17 -onlth'e :bolt 16f bears.' against the member 20. The spring" 22 tendej to 'hold the member 20 in outer position. e

springV 23Y is secured to a pin 24 att-achedtof the disks 7, and '-to a pin 25 attached to the casingand tends to rotate the disks to that positionf'where 'the contacts lcarried by the disks will be outof contact with the fixed contacts. l Y

In operation, the normal position will-be that ini whic'lrthe circuit is broken, and the mechanisniis held in that position by the spring 23. It the operator pushes the mem-I ber 10 inwardly, thev disks carrying the movfable contacts will obviously be moved, and when these movable contacts are in engagement with the pairs of vfixed contacts, the recess llregisters with the bolt 16, which is pressedinto the recess, and holds the parts in the position closing the circuit.

the member thrusts upwardly `circuit is broken.

lVhen it is desired to break the circuit, it is only necessary" to press inwardly member 2O andthe cam surface formed on on the projection 17 and thus pushes the bolt from the recess 11.. The member is now free vto move outwardly and hence the Ispring 23 moves the disks back to the position in which the The slot 12 allows the member 10 to reciprocate despite the projection 17. It will thus be understood that t.he switch mechanism is compactly arranged,

and is adapted to easily and quickly make ber 10 than that described above.

. member connected with the switch or break the'circuit in which it is connected. An improved resultl is obtained by placing the contacts on .opposite blocks7 and placing between them disks of insulation, for by this varrangement of parts all arcing between the contacts is prevented.

In Fig. 3, is illustrated av somewhat simpl-er arrangement for releasing the mem The modification consists inthe elimination of mem; bex-20 entirely, the bolt 16 being extended to receive va knob or push-button QG en its lower end whereby said bol-t maybe directly raised out of the recess 1l. A spring 27,

cooperative with s-uch knob is then'preferred to the spring 18 that pressed against the bolt in the previous construction,A iiigordr to no1- A mally seat such bolt in said recessvll.-

Other modes of applying vthe principle of my 'invention may be employed instead ofthe one explained' change being made as regards the mechanism herein disclosed, provided the means stated by any of the fcllowing claims or' the equivalent of such stated .means be employed.

I therefore particularly point out 4and ldis- .tinctly claim as my invention l bolt adapted to enga A. Atfested on position; a second longitudinally slid'- -able member disposed parallel with the first slidable member and-adapted, on movement in one direction, to d'isengage said retaining means from the rst slidable member; and a springtending `to move the second member in the lopposite direction.

2. In a device of the character described, the ctnnbination of a movable switch meinber; a spring tending to hold said member in oli position; -a longitudinally slidable 'member connected with 'said switch inember,' and provided with a recess .in its side; a

tending to move said sition; a second longitudinally slidable member disposed parallel with the first slidable member' and adapted, on `movement in one direction, to disengagesaid bolt from said recess and a spring tending to move 3. In a device of the character described, the combination of a movable switch meinber; a spring tending lto hold said member in off position; a -longitudinally slidable member connected with said switch-member, and provided with a recess in its side and with a slot extending longitudinally from* tl'ie recess; a second longitudinally slidable member disposedparallelwith the tirstslidf able member and provided with an inclined surface on 'the sideacen't tlie'rst slidable member a "bolt adapted to engage said recess when tlie switch-member is ni on poge said recess when the -switch member is in on osition' a s rino' p p D bolt to engaging pothe second member in the opposite direction.

sition, said bolt being provided with a projection lextending through said slot and adapted to be engaged, on movement of the second member in one direction, by said inclined surface 1nd a' spring tending to move said second slidl Signed by me this Qnd day of June, 1911.

FRAN (LIN SCHNEIDER.

BURTON' IV. Swnn'r,

JN0. F. OBERLIN.

able member 'in the opposite direction.V f

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