US1037525A

US1037525A - Rotary contact for snap-switches.

Info

Publication number: US1037525A
Application number: US69299112A
Authority: US
Inventors: Clarence D Platt
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-04-24
Filing date: 1912-04-24
Publication date: 1912-09-03
Anticipated expiration: 1929-09-03

Description

C. D. PLATT.

ROTARY-GONTACT FOR SNAP SWITCHES. APPLICATION FILED APR. 24,1912.

1,037,525, Patented Sept. 3,1912.

A 770/?NEY UNITED STATES PATENT oEEreE.

CLARENCE D. PLATT, OF BRIDGEPORT, CONNECTICUT.

ROTARY CONTACT FOR SNAP-SWITCHES..

Specification o f Letters Patent.-

Appiication sled April 24,- '1912. serial No. 692,991.

To alt whom 'it may conce-m. y

Be it lrnown that I, CLARENCE D. vPLATT, a citizen of the United btates, residing at Bridgeport, county ot' Fairfield, State of Connecticut, have invented an Improvement in Rotary Contacts for Snap-Swltches,

f which the following is a specification.

I`his invention relates to electric snap switches and has for its object to provide a novel rotary contact member so con-1 structed as to give increased flexibility and resiliency to thel plates of the'lower contact arm, the eitect of which is to improve the operation of the switch in use and to greatly increase its durability.

With these and.' other objects in view I have devisedthe novel rotary contact member which I will now describe, referring to the accompanying drawing forming a part of this specification and using reference characters to indicate the several parts:

vFigure 1 is Aa sectional View on an enf lai-ged scale showing my novel rotary o'ntact applied to an ordinary type of snap switch; Fig. 2,.a plan view of the rotary contact member det-ached; Fig.` 3, a plan view of one' of the plates of the lower` arm detached; Fig. 4, a section on the line 4-4 in Fig. 2, looking in the direction of the arrows; and Fig.5 is an 'inverted plan view of the rotary member detached.

10 denotes the base, 11 the spindle, 12 `the operating handle, 13 the spring which 1s wound by rotation of the handle and 14 the locking and releasing mechanism. These cated by 30. yEach arm comprlsestwo corresponding plates, the plates ofthe u per arm being indicated by 18 andthe p ates Aot the lower arm Aby 19. The platesof the upperarm are made flexible and resilient by cutting out metal from the center, as

lclearly shown in Fi 2, eac-h branch 'ofl each arm being provi ed with' a hole lfor a rivet. The plates 19 of the lower arm are likewise made iexible and vresilient; by cutting out met-al from the center, the branches being specifically indicated by 2 4 and 25.

The novel feature is thateach branchis pr0- vided with an eye for a rivet at one side of the center, said leyes being indicated respectively by 2O and 21.V In use,'the contact quently, the portions of plates 19 indicated noted that the left engaging portions '23, as

Vseen in Figs. 2 and 3,`are uponthe branches Patented Sept. 3, 1912.

'member rotates :trom left to right, conse.

24 of the plates, which are connected to the plates of-.the other arm by 4means of eyes 2 1 on the opposite side ofthe mid-length of the plate, that'isecat the right of the center,

and that the engaging portions=23 at the right end of the' plate are upon branches -25 whichare connected tothe plates of the other'arm by means of eyes 2O lying at the left of themid-length of the arm.' The etfectof this arrangement ofthe eyes is to give an amount of resiliency to theplate's that has not been secured by -any other con-` struction known tov the trade. The parts comprisingv the rotary member as a whole are spaced. apart and secured together as clearly shown in Fig. 4. y.The eyes in both vplates are provided with insulating .bushings 26insulating .washers 27 are placed kabove andvbelo'w the plates of each arm and the arms-are spaced apart by` metal collars 28. Rivets 3l pass through the several parts and through eyes 29 upon engaging plate 30.

32 denotes a tube secured to the engaging plate in which the spindle rotates `freely.

' But two rivets are used and eachrivet passes through one ofthe holes at the midlengthof each plate ofthe` upper arm and through an eye of each plate of the lower arm. A high degree of flexibility and reper arm by passing the rivet through the mid-length ofthe plates. A similar com struction bein .impossible however for the `plates of the ower arm, I have succeeded in obtaining even greater flexibility and resiliency'4 in the plates of the lower arm by placing the attaching eyeof eachbranch on the opposite side of the mid-length from the corresponding engaging portion. p

Having thus described ymy inventlon, I claim:. l

1. A rotary..contact member for snap switches comprising upperand lower arms siliency is secured forthe plates of theup- 65 by 23 are the engaging portions. A'It will be crossing at right angles, each arm consist-H ing of corresponding plates cut away at the center .leaving branches, said plates being provided with contact portions and the y branches of the upper arm and through'ther eyes of the lower arm.

2.9i rotary contact member for snap' switches comprising upper and lower arms.-

crossing at right angles, each arm consist-4,

ing of corresponding plates cut away at the center leaving branches, said plates' being provided with contactportions and the CLARENCE D. PLATT.

yWitnesses:

' A. M. WoosTnR,

S. ATHERZTON.

Copies of this-patent may be obtained for ve cents eaeh, by addressing the Commissioner of Patents,

. Washington, D. C.