US2213625A

US2213625A - Switch

Info

Publication number: US2213625A
Application number: US207129A
Authority: US
Inventors: Cummings John Quentin
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-05-10
Filing date: 1938-05-10
Publication date: 1940-09-03
Anticipated expiration: 1957-09-03

Description

Sept. 3, 1940. J. Q. cuMMxNGs SWITCH Filed Hay l0, 1938 In ventor Patented Sept. 3, 1940 UNITED STATES PATENT OFFICE SWI'IVCH John Quentin Cummings, Albany, N. Y.

Application May 10, 1938, Serial No. 207,129

1 Claim.

This invention appertains to new and useful improvements in switch devices mainly intended for actuating signal means of vehicles, the general object of the invention being to provide a switch device actuated by the foot of the driver, with means for quickly closing an electric circuit when the device is pressed upon by the foot, with means for delaying opening of the circuit when the device is released from pressure by the foot.

Another important object of the invention is to provide an apparatus of the character stated which will' be of simple construction and not susceptible to the ready development of defects.

These and various other important objects and advantages of the invention will become apparent to the reader of the following specication.

In the drawing:

Figure 1 is a vertical sectional view through the switch.

Figure 2 is a sectional View on the line 2-2 of Figure l.

Figure 3 is `a cross sectional view on the line 3-3 of Figure 1.

Figure 4 is a side elevational view of one of the gears.

Figure 5 is a side elevational view of the insulating spacer disk.

Figure 6 is a sectional view on the line 6-6 of Figure 3.

Referring to the drawing wherein like numerals designate like parts, it can be seen in Figure' 1 the switch generally referred to by numeral I0 consists of a box structure 21 from one wall 28 of which extends the stub shaft 29 which has a reduced portion 30 defining the shoulder 3| against which abuts the gear 32. This gear has a section of teeth 33 adapted to mesh with the rack 34 at the lower end of the vertically movable shaft 35. The gear 32 is struck out to provide the laterally disposed tongues 36 which are disposed into the openings 31 of the disk 38 of insulation which is located on the reduced portion 30 of the shaft 29.

Numeral 38 represents the contactor which has .the cut out portions 40 to avoid the tongues 36 of the gear 32. The remaining portions of the contactor 39 are stamped to provide tongues 4| which are disposed into the openings 42 of the aforementioned disk 38. Thus the contacf tor is adequately insulated from the. gear 32.

The contactor 39 carries a pair of arms 43-44 for riding engagement with the arcuate-shaped contacts and'46, respectively, one of which is connected to a battery by the conductor 41 and the other to a signal by a conductor 48.

Rising from the top of the box 21 is the barrel 49 over the upper end of which is slidably (Cl. 20D-156) disposed the tubular cap 50 to the top of which the shaft 35 is secured as at 5|.

A partition 52 is provided in the upper portion of the barrel 49 and has a packing gland 53 therein through which the shaft 35 is slidable. A coiled compressible spring 54 is interposed between the partition 52 and the top of the cap 50 for normally holding the cap 50 in elevated position.

A plunger plate 55 is carried by the shaft 35 and has openings 56 and also ladditional openings 51 covered by swingable flaps 58. Obviously on the down stroke of the cap 50 fluid in the chamber 59 will pass upwardly through all of the openings 56 and 51. The -contactor 39 will be rotated so as to bridge the contacts 45-46 and result in the energization of the signal. However, when the operator lifts his foot from the cap 5B and the spring 54 begins to retrieve the shaft 35 for swinging the contactor to switch open position, the action will be slow in that fluid will only be able to pass through the two f openings 56 and not through the openings 51 covered by the flaps 58. Thus the signal will remain active for a substantial period of time, that is, suflicient time to execute the turn desired by the operator.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter. l

Having described the invention, what is claimed as new is:

A switch structure of the class described comprising a casing, a stationary shaft in the casing, a gear rotatably supported on the shaft and having teeth on a part of its circumference and tongues projecting from one face thereof, a disk of non-conducting material on the shaft having slots therein, some ofwhich receive the tongues of the gear, a contactor disk on the shaft having tongues extending from one face thereof and. fitting in the other slots of the disk of insulating material, said disk being located between the gear and the contactor disk, said contactor disk having notches therein arranged in alignment with the tongues of the gear for preventing said tongues from contacting the contactor disk, a pair of arcuate contact strips in the casing, arms extending from the contactor disk for engaging the strips and a manually operated plunger member having a rack portion for engaging the teeth of the gear for actuating the parts to move the arms of the contactor disk into and out of engagement with the strips.

JOHN QUENTIN CUMMJNGS.