US2207066A

US2207066A - Periodic switch

Info

Publication number: US2207066A
Application number: US105185A
Authority: US
Inventors: Millsap Walter
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-10-12
Filing date: 1936-10-12
Publication date: 1940-07-09
Anticipated expiration: 1957-07-09

Description

PERIODIC SWITCH Filed Oct. 12, 1936 INVENTOR. WALTER MILLSAP. BY

ATT EY.

Patented July 9, 1940 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to periodic switches.

The general object of the invention is to provide an electrically operated periodic switch which is particularly adapted to operate a time keeping mechanism.

Other objects and advantages of my invention will be apparent from the following description taken in connection with the accompanying drawing, wherein:

Fig. 1 is a front view of a labor time register embodying the features of my invention;

Fig. 2 is a fragmentary side elevation showing the actuating member;

Fig. 3 is a fragmentary top plan view showing the actuating member;

Fig. 4 is a section taken on line 4-4 Fig. 2; and

Fig. 5 is a section taken on line 5-5 Fig. 2.

Referring to the drawing by reference character I have indicated one embodiment of my improved time device generally at [0. As shown the device I is mounted in a cabinet |2 having a front panel |3 on which I arrange a plurality of man hour labor totalizers l4, a plurality of job hour indicators IS, a man hour totalizer l6, and a plurality of job selector devices Also mounted on the front panel I provide an employees lock device l8 for controlling each of the man hour indicators and a master lock device I9 for controlling the entire unit. Furthermore the device l0 includes a suitable clock mechanism of any desired type as indicated at 20.

Mounted on the wall portion 2| of the clock 20 I provide a pair of spaced lugs 22 which have an arm member 23 pivotally secured thereto as at 24. The free end of the arm member 23 has an aperture 25 therein (see Fig. 4). One fast rotating shaft 26 of the clock mechanism 20 extends through the wall 2| and is secured to a member 21 as by a pin 28. This member 2'! is made of suitable electrical insulating material. Rotatably mounted in the upper portion of the member 21 I provide a shaft 3 which passes through the aperture 25 of the arm member 23. A suitable electrical insulating means 3| is provided between the ends of the

shafts

26 and 30.

Surrounding the shaft 30 and spaced from the wall 2| I provide a contact plate 32 which is made of a suitable electrical insulating material and is supported by legs 33. Mounted on the shaft 30 adjacent the member 21 I provide a disk 34 which is secured to the shaft as by a pin 35 and between the plate 32 and the disk 34 I provide a suitable electrical insulating sleeve 36 around the shaft 30. The plate 32 has a plurality of electrical contact members 31 thereon which are shown as four in number although the number may be varied to suit the requirements.

Suitably secured to the shaft 30 I provide a wiper arm or controller 38 which is adapted to Visit and engage the contacts 31. Spaced from the contact plate 32 I provide a boss 39 which is supported by legs 40 shown as integral with the contact plate 32. Positioned in a suitable recess in the boss 39 I provide a metal sleeve 4| which has a recess 42 therein in which a carbon member 43 is positioned.

Positioned between the inner end of the carbon member 43 and the bottom of the recess 42 I provide a coil spring 44 for resiliently urging the carbon member 43 into engagement with the end of the shaft 30. The sleeve 4| is provided with a contact screw 45 for securing thereto an electrical wire.

The member 2! has an arm 46 projecting therefrom and terminating beyond the periphery of the disk 34 where it has a dog member 41 pivotally secured thereto as at 48. A flat spring member 49 has one end secured to the arm 46 and the opposite end engages the dog 41 and resiliently urges it into engagement with the periphery of the disk 34 (see Fig. 4).

In its periphery the disk 34 is notched as at 50. Adjacent the shaft 30 the arm 23 has a depending outwardly directed lip thereon (see Fig. 5) the outer end 52 of which extends to the periphery of the disk 34. Intermediate the pivot 24 and the aperture 25 the arm member 23 has an aperture 53 therein through which a shaft 54 of the clock mechanism 2 projects. This shaft 54 is so geared to the clock mechanism it makes one complete revolution periodically for instance say every six minutes or in other words every tenth of an hour. Secured to the shaft above the arm member 23 I provide a cam disk 55 the under face of which has a notch 56 therein. Mounted on the arm 23 I pro Vide an upstanding finger portion 51 which is below the cam disk 55. Intermediate the shaft 30 and the shaft 54 and between the arm member 23 and the wall 2| I provide a coil spring member 58 which resiliently urges the arm member 23 upwardly and the finger portion 5'! into engagement with the cam disk 55.

When the clock 20 is operated and the finger portion 51 engages the under side of the cam disk 55 it retains the arm 23 in an inward position which in turn retains the lip 5| in a position adjacent the disk 34. When the notch 56 of the cam disk 55 is opposite to the finger portion 51 the latter is moved upwardly by the spring 58 into the notch 56, whereupon the lip 5| is raised above the dog member 4'! whereupon when the dog matches the notch 59 in the disk 34 it enters the notch 55 and rotates the disk M thereby rotating the shaft 30.

The notch 56 is so disposed that the arm is moved to a lowered position again before the shaft has made one complete revolution whereupon as the dog M approaches the end of one complete revolution the lip 58 moves it out engagement with the notch in the disk 34.

As the shaft 39 is rotated the Wiper arm 33 thereon makes one complete swing around the contact plate 32 engaging each of the contact members 3'! in order. From the foregoing it will be apparent that the wiper arm engages the contacts 41 once every six minutes, that is every tenth of an hour.

Having thus described my invention I claim:

In an actuating device for a labor time registering system, a clock movement including a fast moving shaft and a slow moving shaft, a fixed,

contact disk having a plurality of spaced contacts thereon, a shaft axially aligned with said fast moving shaft and supported by said disk, a single wiper arm adapted to engage said contacts in order, said wiper arm having exposed contact means, said exposed contact together with the wiper arm and disk contacts being arranged to form a portion of an electrical circuit, a second disk, means to secure said second disk on said wiper arm shaft, said second disk having a notch in its periphery, said fast moving shaft having a laterally projecting arm thereon, a dog pivotally supported on said arm, resilient means normally urging said dog into engagement with said notched periphery, means to insulate said Wiper arm shaft from said fast moving shaft, a clutch arm having one end pivotally supported and remote from said shafts and having its other end disposed adjacent to said second disk, said other end including a portion adapted to restrain said dog from engagement with said notch, means normally urging said clutch arm away from said second disk, a cam on said clutch arm, a cam disk on said slow moving shaft and adapted to engage said cam and maintain said clutch arm adjacent said second disk, said cam disk being notched in one portion to receive said cam whereby said clutch arm is allowed to momentarily move away from said second disk during each revolution of said slow moving shaft.

WALTER MILLSAP.