US1408630A - Flush switch - Google Patents

Description

Patented Malt?, 1922.

H. G. PAPE.A

FLUSH SWITCH. APPLICATION man JULY 3.1911.

`UNITED STATES HERMAN G. PAPE, OF NEW' YDRK, N. Y.,

OFFIC ASSIGNGR, BY ltESNE .SSGNMETS, 110

BEAVER MACHINE AND TOOL CO., INC., GF NIEVARK, NEJJ JERSEY, A CORPO- RATION OF NEW JERSEY.

FLUSH SWITCH.

Specification of Letters Patent.

Patented Mar. '7, 1922.

Application filed July 3, 1917. Serial No. 178,487.

To all whom t may concern.'

Be it known that 1, HERMAN G. PAPE of N ew York city, in the county and State of New York, have invented a new and useful Flush Switch, of which the tollowingis a specification.

One object of my invention is to provide a switch whose mechanism is compactly arranged and other objects are to provide improvements in the mounting and construction oit' the parts.

@ne feature ot my invention consists in mounting the oscillating' actuating member and the oscillating contact member on a common axis. v

Another feature consists in isolating electrically the bridge pieces. i

Another feature consists in the mounting of the bridge piece carrier on the attachment plate.

Another 'feature consists in providing a bow spring to Aconvey motion from the actuating member to the bridge piece carrier.

Uther features will be pointed out below.

In the drawing:

Figure 1 is an elevation part-ly in section oi a' Hush switch embodying my invention.

Figure 2 is a section on line 2-2 of Figure l;

Figure 3 is a plan view of the actuating' member khereinafter described Figure 4 shows a portion ot the attachment plate hereinafter described;

Figure 5 is a detail hereinafter described; and

Fig. 6 is a section on line 6-6 ot Fig. 1.

My improved switch comprises a hollow body 1 of insulating material itastened by screws 2, 2 to an attaching' plate 4 by means oi which the switch is applied to a junction box. The' attaching' plate @c is made with an integral arm or tang 3 on which the movable parts of the switch mechanism are mounted. A

The switch mechanism includes a yoke or bridge piece-carrier 5, Fig. 6, to the middle portion of which is fastened by rivets a bracket 7 formed with laterally projecting ear 8 having a centrally disposed hole t) to receive a stud screw 10 by means ot' which said bracket is pivotally fastened to the inner end ot the arm or tang Each arm 11 of yoke 5 has mounted upon its outer side a metal bridge piece 12 which is insulated from said yoke by washers 13 and 1/A oit libre or other suitable insulating material. TUpon the the outer side of each nbre washer 13 is a metallicavasher 15 and each bridge piece 12 is fastened to its arm 11 by eye lets 16 which extend through said bridge piece, its washers 18, 11i and 15, and the yoke arm 11. o Fastened in position within body 1, by means oi screws 21 are four metal brackets 1'? and 18 carrying stationary springcontacts 19 and 20, the contacts 19 co-operating with one of the bridge pieces 12 and the contacts 2O with the other bridge piece. In the operation of the switch the yoke and bridge pieces carried by it are oscillated on stud screw 10 to a limited extent and when the yoke is at one extreme ot its movement the contacts o1E each pair 19 and 20 are engaged and electrically connected by their bridge piece 12, and when at the opposite extreme of its movement the bridge pieces are out of engagement with their contacts 19 and 20. The brackets 17 carry binding screws 22 by means ot which the lead wires (not shown) brought into body 1 through ports 28, are fastened to the b ackets 17.

The actuating member of my switch is a sheet metal stamping 24, Fig. 8, formed with a triangular hole 25, a. round pivot hole 26 and two hooks 27, one at each side of pivot hole 26. The hooks 27 are in engagement with the inner ends ot the stems 28 ci push buttons 29 and 30 mounted in and guided by holes 31 and 32 formed through plate 4L. This actuating member is pivotally Ysupported in position against the inner side of ear 8 by the stud screw 10 and is connected with said ear by a bow springBS which serves as a means throughwhich the oscillating movements of member 24 act to oscillate the yoke and parts carried by it. One end, 3st, of this bow spring 83 extends into the outer branch of hole 25 while the other end extends through the inner wider portion of hole 25, through a round hole 36, Fig. 5, in ear 8, and then into an arcuate slot 37 formed in the arm or tang 3 of plate l whose ends serve as stops to limit the movement et end 35 in both directions lengthwise ot said slot.

lillhen one of the push buttons is operated to swing member 2-1 in either direction the end Si ot spring' 323 is swungv around stud screw 10 toward the end 35 which is held stationary by the end of slot 37, thereby increasing the stress of said spring and also turning it on an axis perpendicular to the planes ot member 2a and ear 8 and relatively to said two parts, until the direction of the application or' the pressure ot end 35 to ear 8 has been changed to such an angle with relation to screw l0 that said pressure starts to swing ear 8 and yoke 5 on stud screw l0 whereupon said ear and yoke are snapped by one quick movement to the opposite eX- treme of their movements, the end 35 of spring 33 passing from one side of hole 25 to the other and jumping from one end of slot 37 to the opposite end.

Thus there is no creeping movement of yoke 5 and its bridge pieces at the start ot its reversing movement but said movement is a quick and snappy one throughout. The reason for this is due mainly to the tact that the starty otl the movement ot end 35 supplements the movement oit member 24: and ot the end 34E of spring 33 in the etiect of such movement upon the direction of the application of the pressure of said end 35 upon ear 8 and yoke r5.

Of course when the parts are at rest the spring 33 which is normally under some stress holds actuating member 24 and yoke 5 each at the limit of its movement in one direction, the engagement of the end 35 oit spring 33 with the sides of hole 25 serving to limit the extent of relative movement between tlie yoke and actuating member.

In the drawings the bridge pieces 12 are shown in engagement with their contacts and the circuit or circuits closed. By pressing upon push button 30 the bridge pieces may be thrown out of engagement with said contacts as will be clear.

What I claim is:

l. An electric switch comprising a shaft; an oscillating actuating member mounted on said shaft; an oscillating contact member, said members oscillating on a common axis; a coiled spring having one end operatively connected to one of said members and the other end operatively connected to the other of said members, said spring being supported by said members independently oi' said shaft and the points of connection of said ends being normally at different distances from said common axis, the actuating member moving the first-mentioned end gradually nearer the other end until the iirstmentioned end passes the line extending through said common axis and through the point of connection of said other end with the Contact member; and means to prevent movement of the contact member in one direction during said movement ot the iirstmentioned end, said spring being put increasingly under stress by the actuating member until the first-mentioned end passes said line, the spring then expanding and operating the contact member in the opposite direction, the coil twisting bodily during said stressing and expanding and the ends oit the spring moving with relation to each other as the coil twists bodily.

2. iin electric switch comprising an actuating member; an oscillating member; a metallic yoke rigidly connected to said oscillating member; a spring at one side of the middle portion ot said yoke and operatively coiniecting said members; and two bridge pieces mounted on; but electrically insulated from; said yoke; and stationary contacts cooperating with said bridge pieces.

3. An electric switch comprising a supporting member; a headed stud carried by said supporting member; a yoke-shaped bridge piece carrier and an actuating member mounted to swing on said Stud and held in place between said supporting member and the head of the stud; and meansoperatively connecting said carrier and said actuating member.

4e. rin electric switch comprising a supporting member; a stud carried by said member; a yoke-shaped bridge piece carrier and an actuating member mounted to swing on said stud; and a spring operatively connecting said carrier and said actuating member and being supported independently of said stud.

5. An electric switch comprising a supporting member; a stud carried by said member; a movable yoke-shaped contact member and an actuating member mounted to swing on said stud; and a bodily movable spring operatively connecting said contact member and said actuating member and being mounted independently of said stud.

G. An electric switch comprising a hollow body of insulating material; an attachment plate secured to said body and having a portion iiXed thereto and extending into said body; a headed stud project-ing from said portion; a bridge piece carrier and an actuating meniber mounted to swing on said stud and held in place between said extending portion and the head of said stud; bridge pieces mounted on, but insulated from said carrier; stationary contacts cooperating with said bridge pieces; and a bodily movable bow spring; supported independently of said stud, and operatively connecting said carrier and said actuating member.

7. An electric switch comprising a shaft; an oscillating actuating member mounted on said shaft; an oscillating contact member, said members oscillating on a common axis; a coiled spring having one end pivotally connected to one of said members and the other end pivot-ally connected to the other of said members; said spring being supported by said members independently of said shaft, and said pivotal connections of its ends being normally at different distances from said common axis; the actuating member moving the lirst-mentioned end gradually nearer the other end until the first-mentioned end passes the line extending through said common axis and through the point of connection of said other end with the contact member; and means to prevent movement of the contact member in one direction during said movement of the first-mentioned end, said spring being put increasingly luider stress by the actuating member until the irst-men tioned end passes said line, the spring then expanding' and operating the contact member in the opposite direction, the coil twisting bodily during said stressing and expanding and the ends of the spring moving with relation to eaclr other as the coil twists bodily.

8. An electric switch comprising a shaft; an oscillating actuating member mounted on said shaft; an oscillating Contact member, said members oscillating on a common axis; a bow spring having one end pivotally connected to one of said members and the other end pivotally connected to the other of said members, said spring being supported by said members independently of said shaft, and said pivotal connections of its ends being normally at different distances from said common axis, ther actuating member moving the iirst-mentioned end gradually nearer the other end until the first-mentioned end passes the line extending through said common axis and through the point of connection of said other end with the contact member; and means to prevent movement of the contact member in one direction during Said movement of the rst-mentioned end, said spring being put increasingly under stress by the actuating member until the first mentioned end passes said line, the spring then expanding and operating the contact member in the opposite direction, the bow twisting bodily during said stressing and expanding and the ends of the spring moving with relation to each other as the bow twists bodily.

HERMAN G. PAPE.

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