US2226783A - Time controlled switch for radios - Google Patents

Description

1940- v w. P. SMITH 2,226,783

TIME CONTROLLED SWITCH FOR RADIOS Filed April 1, 1940 3 Sheets-Sheet l A iiomey Dec. 1940- V w. P. SMITH TIME CONTROLLED SWITCH FOR RADIOS 3 Sheets-Sheet Filed April 1, 1940 MALI/7M P 5M/7'H,

Aii'omey Dec. 31, 1940.

W. P. SMITH TIME CONTROLLED SWITCH FOR RADIOS Filed April 1, 1940 s Sheet-Sheet 3 Inventor WILL/AM Z. 5M/TH,

By 2mm A iiofney Patented Dec. 31, 1940 UNITED STATES PATENT OFFICE;

1 Claim.

This invention relates to new and useful improvements in the general art of time controlled switches and more particularly to a switch for controlling radio receivers, the principal object of 5 the invention being to provide means for automatically turning a radio receiver on at a predetermined time.

Another important object of the invention is to provide a time controlled switch of the character stated which will be positive acting and not susceptible to the ready development of defects.

Still another important object of the invention is to provide a time controlled switch of simple construction and low cost of manufacture.

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

In the drawings:

Figure 1 represents a front elevational View of the clock switch.

Figure 2 is a top plan view.

Figure 3 is a section on the line 3-3 of Figure 2.

Figure 4 is a fragmentary detailed sectional view on the line 4-4 of Figure 1.

Figure 5 is a sectional view on the line 5-5 of Figure 3.

Figure 6 is a plan View of the hour hand.

Figure 7 is a front elevational view of a modified form of clock switch.

Figure 8 is a fragmentary detailed sectional view on a line 8--8 of Figure 7.

Figure 9 is a fragmentary enlarged detailed sectional View on a line 9--9 of Figure '7.

I13 Referring to the drawings, wherein like numerals designate like parts, it can be seen in the drawings that numeral 5 represents the clock case in which is the dial 6 in front of which operates the hour hand I and the minute hand 8.

Around the shafts of these hands is the rotatable collar 9 from which extends the contact adjusting arm 10. This arm I at its outer end is provided with a laterally disposed lug l I having a threaded opening therein for receiving the threaded shank of a set screw 12.

The shell is circumferentially slotted just in front of the dial 6, edge portions of the case at this flange being formed with an inwardly offset shoulder l3 to act as a guide for a flexible band M. The set screw I2 is disposed through an opening in the band I4 and obviously into the lug l l to the end that by tightening the screw 12, the band can be bound against the shoulder l3 and 55 thus the arm I0 is held in adjusted position.

Bridge members 15 span the slot to hold the rim section l6 connected with the case 5 proper.

On opposite sides of the intermediate portion of the arm H) are plates l1 and I8 of insulation against which are disposed contacts l9'-I9 and 5 2020, respectively.

The contacts l9-I9 ride the annular and concentric conductor rings 2l22, which are suitably secured to the front side of the dial 6.

The spring contact fingers 20 project outwardly into the path of the contact strip 23 which is secured to the strip of insulation 24 located on the inner side of the hour hand 1.

The clock assembly can be provided with the base 25 on one side of which is the switch 26 whereby the radio can be started at a given hour, and a second switch 21 can be provided at the other side of the base for all time operation of the radio. The connections involving these switches can be of any conventional hook-up. Numeral 28 represents the conductors and connections to the annular conductor strips 2l 22.

It can now be seen that when the arm ID has been adjusted to the desired position on the dial, the hour hand when it moves to bridge the conductor member 24 with the contacts 20-20 will close the circuit involving the wires 28 and start the radio receiver, thus awaking a sleeping person by the sound of a radio instead of the more acute sound of an alarm clock.

A modification of the invention is shown in Figures 7, 8 and 9, and this consists of the clock case 30 having the forward rim section 3| containing the window 32. Numeral 33 represents a dial in front of which the hour and minute hands 34 and 35, respectively, operate.

In this form of the invention, the contacts are stationarily mounted at a particular hour on the dial. For instance, the spring conductor strips 36-31 are mounted in parallel relation, say for instance, just before the six oclock designation on the dial. The ends of these strips 36-31 are connected to the binding post 38 which extends through bushings 39 of insulation disposed in openings in the dial 33. 5

Each of these strips 36 and 31 has an intermediate outstanding hump 40 against which a bridge strip of conductive material 4| on the hour hand 34 can wipe. This bridge member 4| is insulated from the hour hand 34 by the strip 42 of insulation.

It can now be seen that the cord 43 from the radio has one wire connected to the strip 38 and the other to the strip 31 and when the hour hand 34 moves to a position where the strip 4| wipes the contact strips at the humps 40, the radio will be started.

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 I from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new 1S- In combination with a clock including an hour

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