US2166601A - Time controlled radio switch - Google Patents

Description

y 1939. M. s. MARTIGNONI 2,156,601

TIME CONTROLLED RADIO SWITCH Filed Aug. 3, 1937 2 Sheets-Sheet 1 i Q q R3 U l I a h HIHHHHX lllll R M R a 1m g i Q o I 1 (q l h July 18,, 1939. M. s. MARTIGNONI TIIE CONTROLLED RADIO SWITCH Filed Aug. 3, 1937 2 Sheets-Sheet 2 Patented July 18, 1939 UNITED STATES PATENT OFFICE TIIHE CONTROLLED RADIO SWITCH Application August'3, 1937, Serial No. 157,202

2 Claims.

This invention relates to switches for turning on or turning off radios and particularly to time controlled means for this purpose.

In radios now on the market, if it is desired to hear one particular program and no other, it is necessary that the user remember the exact time at which such a program comes on the air and then start up the radio by the usual hand switch. It is very often the case that the start 0f the program is overlooked in other interests and by the time it is remembered, the particular program is over. Furthermore, if the radio switch is turned on in time, other matters may prevent the user from turning it off and other non-interesting or undesired programs will be heard, using up current unnecessarily.

The object of this invention is to provide a very simple time actuated switch which may be set to cut in the radio at any instant of time desired and to cut it oil at the end of a selected period.

Another object is to provide a novel form of means for this purpose which includes a switch for closing the input circuit of the radio, a second switch for opening the input circuit of the radio and clock-work having means for automatically shifting the first named switch into circuit closing position at a predetermined and selected time and shifting the second named switch out of its circuit closing position after a predetermined and selected time, and provide means whereby the time actuated switch operating mechanism may be readily set by the user.

My invention is illustrated in the accompanying drawings wherein:

Fig. 1 is a front elevation of my clock-actuated radio switch.

Fig. 2 is a side elevation of the interior mechanism, the casing being broken away.

Fig. 3 is a fragmentary section on the line 3-3 of Fig. 2.

Fig. 4 is a section on the line 44 of Fig.

Fig. 5 is a section on the line 5-5 of Fig.

Fig. 6 is a section on the line 6-6 of Fig.

Fig. 7 is a fragmentary perspective view of the contact carried by one of the levers.

Referring to these drawings, Ill designates the casing of the switch mounted on a base ll having a clock dial I2 on its face with the usual hour and minute hands i3. Disposed within the case is any ordinary clock-train such as is used in cheap clocks, the train being shown as driven by a spring l4 and having a key I5 for winding up the spring. It is not necessary to describe the clock-work or train in detail as many difierent forms of clock-train can be used and the clock-train is connected to the hands I3 in any usual or suitable manner.

The clock-train drives two gear wheels I 6 and H, each of which at its center has an outwardly projecting hub portion I8 formed at one point with an axially extending radial slot I9. The gear wheels are rotated by the clock-train and are loosely mounted respectively on the shafts or arbors 202l. Carried by each shaft 20 or 10 2| is a finger 22. Each shaft in the construction shown carries on it a gear wheel 23 engaged by a gear wheel 24, each gear wheel 24 being in turn engaged by a pinion 25 or 26. Each of these pinions 25 and 26 is mounted upon a setting shaft, the shafts being designated respectively 21 and 28. These shafts preferably extend throughto the front of the case and each shaft is operable by means of a knurled setting head or knob 29. A clock-hand setting head 30 may 20 also be provided connected to the clock-work mechanism in any suitable manner by which the hands l3 may be set in case the clock is fast or slow. The forward end of each shaft 20 or 2| carries a hand 3| operating over a small dial. 25 There are two of these dials 32 and 33, each having the usual twelve-hour numerals with intermediate iractional graduations. The dial 33 is to indicate when the radio is to go on" and the other dial when it is to go off". Each of the 30 disks or gear wheels l6 and I1 is movable longitudinally on the corresponding shaft 20 or 2| and is urged forward by a spring 34 against the radial finger or pin 22. As the pin or finger 22 may be set into any desired angular position 35 to correspond to any moment of the day, it is obvious that when that period arrives, the gear wheel l6 or IT will have rotated to a position where the notch or slot i9 will coincide with the position of the finger 22 and this will permit 40 the corresponding gear wheel to be urged forward by its spring. The gear wheel I! is for the purpose of shifting the on switch into circuit closing position while the gear wheel I6 is for shifting the off switch to a circuit breaking 45 position.

The switches are carried in the upper portion of the case i0 and include two levers 35 and 35a both pivoted on a common pivot pin 36 extending through the top of the case. The upper portion 50 of the case is formed to provideitwo chambers 31 within which the levers respectively operate, and the upper ends of the levers project out through slots 38 in the upper ends of these chammm. The lower end of each lever carries a u bridging contact 39 formed of a wire or a. strip of metal and shown as including a cross-bar spaced outward of the lever and connected to the lever by inwardly extending arms or braces 40. The contact 39 on one lever projects reversely to the contact on the other lever.

The lower end of each chamber has a downwardly opening passage 4| defined by the intermediate insulating block 42 and by the lateral insulating blocks 43. Upon the supporting shoulders of these blocks are mounted the metallic contacts 44, 45, 46 and 41, each contact having a resilient finger 43 extending into the corresponding passage 4|. The input wires 49 of the radio are connected by binding screws 50 to the outer contacts 44 and 41 and the contacts 45 and 46 are connected by a wire 49a. When the bridging contacts 39 of both levers are in electrical engagement with the contacts 44 to 41, the circuit through-the radio will be completed and when either one of the bridging contacts is out of such engagement; the circuit will be broken.

As before stated, the bridging contacts on the levers are reversely mounted relative to each other and thus when the lower end of lever 35 is forced outward by the outward movement of wheel IS, the circuit will be broken while upon the forward movement of the lower end of lever 35a, the circuit is completed. It follows, therefore, that when the lower end of lever 35a is forced backward by pulling the upper end of the lever forward, the circuit will be prepared and upon the forcing back of the upper end of lever 35, the circuit will be closed. Thus when the keys 5| on the levers 34 and 35 are pressed forward, the switch 35 will prepare the input circuit and when the selected moment of time arrives the lower end of lever 35a will be forced forward, the radio circuit will be completed and after the program desired to be heard has been completed at a selected time, the circuit will be automatically broken by the forward movement of the wheel l6 due to the slot in the hub [8 of the wheel coinciding with the corresponding finger 22.

It will thus be seen that in operating this device, both switch levers 35 and 350. are pulled forward. This shifts the contact 40 of lever 35 into a circuit preparing position, as shown in 4, and shifts the contact 40 out of its, circuit closing position to the position shown in Fig. 5 in full lines. When the instant has been reached when the finger 22 coincides with the hub I8 of wheel I'I, then the wheel l1 moves forward, as shown in dotted lines in Fig. 5, causing the contact 40 to close the circuit through the radio. The radio will then operate until the selected instant of time has been reached when it is to go off, and when this time is reached, the wheel it moves forward under the impulse of its spring 34 and breaks the circuit through the contact 40 and the contacts 44 and 45. The time at which the circuit will be completed and the time at which the circuit will be broken is controlled by turning the knobs on the setting shafts, the glands on the small dials showing'the selected I do not wish to be limited to any specific means for driving the two switch actuatinggear wheels IGand I! as the clock-work for driving these gear wheels might be of various forms. While I have illustrated my device as applied to a twelve-hour clock, it can, of course, be as well applied to a twentyfour-hour clock. It is also obvious that the clock mechanism and the switch mechanism might be enclosed within the radio casing or form an integral part of the radio casing instead of being in the form of a separate unit. The usual cut-off switch commonly found on radios may be used or this switch omitted and the cutting off or on of the radio be accomplished entirely by means of the switching mechanism which I have disclosed.

What is claimed is:

l. A time-controlled switch mechanism for turning on a radio and turning it oil at predetermined and selective periods of time, including two pairs of spaced contacts, one of the contacts of one pair being electrically connected to one of the contacts of the other pair, the remaining contacts having binding screws whereby they may be connected in a radio input circuit, two pivoted switch levers associated with the pairs of contacts respectively and each supporting contact adapted to bridge the pair of corresponding contacts, two rotatable motor driven elements one for each lever mounted for bodily axial movement, springs urging the said rotatable elements axially in one direction, said elements when shifted under the action of the springs each engaging and moving its associated switch lever to bring one of said contacts into circuit closing position and the other of said contacts out of said circuit closing position, and means individual to each rotatable element normally preventing the axial outward movement thereof, each of said means being manually adjustable to release the corresponding rotatable element at a predetermined instant of time.

2. A time controlled switch mechanism for turning on or turningofi a radio set at predetermined instants of time, including clockwork, two manually operable pivoted switch levers, one of said levers being constructed and arranged to prepare a radio circuit when the lever is shifted in one direction, the other lever being constructed and arranged to close said circuit when the lever is shifted in the opposite direction, two rotatable clockwork driven elements one for each lever and mounted for bodily axial movement, springs urging the rotatable elements axially in one direction, said elements, when shifted under the action of their springs, each operatively engaging with and shifting its associated switch lever to thereby shift one of said levers into a circuit closing position and the other of said levers successively into a circuit breaking position, and means individual to each rotative element normally preventing the axial outward movement thereof, each of said means being manually adjustable to release the corresponding rotatable element and permit its movement under the action of its spring at a predetermined instant of time,

MARINO S. MARTIGNONI.

lit at Water to into material containing as an essential ingredient a substantial amount of calcium, a carbohydrate binding agent, ammonium phosphate and a small amount of a decomposable fluorine compound, converting the mixture into granules, and heating the granules to carbonize the carbohydrate binding agent and decompose the fluorine compound and the ammonium phosphate.

6. A process of producing filtering material, oomprising mixing finely divided particles of phosphatic material containing as an essential ingredient a substantial amount of calcium, carbohydrate binding agent, an ammonium phosphate and a small amount of a decomposable fluorine compound, converting said- 1 ixture into anules, and gradually heating eai. 'annles temperature tweenfilifi r TANSBUR *ILZAM

Images