US2208948A - Electrically operated remote control device - Google Patents

Description

y 1940- F. w. RAHRER El AL 2,208,948

ELECTRICALLY OPERATED REMOTE CONTROL DEVICE Filed Aug. 9, 1938 2 Sheets-Sheet 1 76 77 gay/ INVENTOR S $14M W 1 BY 9 S W M AT TORNEY July 23, 1940. HR ET AL 2,208,948

ELECTRICALLY OPERATED REMOTE CONTROL DEVICE FiledAug. 9, 1938 2 Sheets-Sheet 2 a ma vvvvvvv NVENTOR! $1 M M BY 6% M AT I'ORNEY Patented July 23, 1940 ELECTRIOALLY OPERATED REMOTE CONTROL DEVICE Francis W. Rahrer and Sam- Edelman, Anniston, Ala.

Application August 9, 1938, Serial No. 223,805

2 Claims.

Our invention relates to an electrically operated remote control device and it is the object of the invention to provide a remote control device particularly adapted for use in controlling the 5 speed of an internal combustion engine.

Another object of the invention is to provide a remote control device so constructed and arranged that vibration and jarring will not cause its position to be altered.

' Other objects and features of the invention will be apparent from the accompanying drawings of an illustrative embodiment of the invention and the following specification.

In the accompanying drawings, Fig. 1 is a front side elevation of an embodiment of the invention:

Fig. 2 is a top plan view of the device shown in Fig. 1;

Fig. 3 is a bottom plan view of the device shown in Fig. 1;

Fig. 4 is a rear side elevation of the device shown in Fig. 1;

Fig. 5 is an end view of the device shown in Fig. 1;

Fig. 6 is a diagrammatic showing of a circuit arrangement.

In the form of the invention shown in the accompanying drawings, there is a framework III on which other parts of the device are carried. The framework ID has mounting brackets II by which it may be secured to an engine base or panelboard. The framework II) also has clamps I2 which are adapted to hold solenoids I3 and I4 in spaced relation to each other. The solenoids I3 and I4 have a common core l5 which extends beyond the solenoid l4 and has at its outer end a ball portion I6 of a ball and socket arrangement to which a throttle control rod I! or other control member may be secured.

Encasing the core I5 in the space between 40 the solenoids there is a tube I8 which has a continuous longitudinal slit through which an .operating arm I9 carried by said core projects.

The operating arm I9 engages with a tie bar 20 carried by toggle arms 2| and 22 pivotally secured on the framework I0. Thus movement of the core I5 will cause a corresponding movement of the tie bar 2|] and its supporting toggle arms 2| and 22.

A switch arm 23 extending in an opposite direction to the toggle arms 2| and 22 is also pivotally secured to the framework l and a spring 24 is secured between a projection 25 on the lower portion of said switch arm and the tie bar 20. The spring 24 normally urges the switch arm and toggle arms together. The switch arm 23 car- (c1. rzs-sas ries a contact 26 adapted to connect said switch arm with either of two terminals 21 or 28 carried on the framework In. The switch arm 23 is also adapted to rest against one of two electro- magnets 29 or 36 when the contact 26 forms a connection to one of the terminals 21 or 28, respectively. The switch arm 23 being of a material subject to being attracted by an electro-magnet, when the tie bar 20 and the toggle arms 2! and 22 are moved by the operation of one of the solenoids [3 or l4, the spring 24 will be charged so as to exert a force so directed as to tend to move the switch arm 23 and the contact 26 away from the terminal and magnet to which it is connected and into contact with the other of said terminals and magnets. However, the attraction of the electro-magnet against which the switch arm is then resting is sufiicient to resist the pull of the spring when said electro-magnet is energized.

The operation of the device and its wiring connections are as follows:

One side of each of the solenoids I3 and I4 is connected to one side of a battery 3| through wires 32 and 33, respectively. The other side of the solenoid I3 is connected in series with the electro-magnet 29 to the terminal 28 through wires 34 and 35. The other side of the solenoid IQ is connected in series with the electro-magnet 39 to the terminal 21 by the wires 36 and 31. The switch arm 23 and the contact 26 being adapted to connect with either of the terminals 21 and 28 form a common element in each circuit and the switch arm 23 is connected by a wire 38 through a switch 39 to the opposite side of the battery 31 thus completing the circuit.

When the switch 39 is closed, to operate the control device from a position such as shown in the full lines in Fig. 6, the solenoid I3 will be energized causing the core l5 to move so that the throttle is brought to its new position. This movement of the core I5 also moves the tie bar 29 and the toggle arms 2| and 22 so that the spring 24 exerts a force tending to carry the switch arm 23 to a position where the contacts 26 will connect with the terminals 21 as has been 5 previously described. However, when the circuit to the solenoid is completed by closing the switch 39, the electro-magnet 29 is also energized and is of sufficient strength to hold the switch arm 23 against the pull of the charged spring so long as the switch 39 is closed. Upon opening the switch 39, the circuit through the electromagnet 29 is interrupted and the spring 24 is allowed to carry the switch arm 23 to the position where the contact 26 connects to the terminal 21. Thus, when the switch 39 is again closed, the solenoid M will be energized as it has now been placed in the circuit to the battery and this will cause a reverse movement of the core l5, the tie .bar 20 and the toggle arms 2| and 22. In this instance, while the switch 39 is closed, the electro-magnet 30 holds the switch arm 23 against movement until the switch 39 is opened. Thus the switch arm 23 is adapted to be placed in circuit with either of the two solenoids 13 or I4 and when the switch 39 is opened, the force of the spring 24 will carry the switch arm 23 to its appropriate position and the spring will also hold the toggle arms 2! and 22 and the switch arm and thus the core l5 as well in their rela. tive positions which they have now assumed.

While a preferred embodiment of the invention has been illustrated and described, it will be understood that many details thereof may be variedwithin wide limits and it is not desired tolimit the invention to the precise form shown andL described.

weclaimz. 1 .31 In an electrically operated control device comprising a pair of solenoids having a common core connectedtoa control member and reciprocable by alternately energizing said solenoids, and two circuitscontrolled by a common switch and eachincluding one of saidsolenoids and a holding magnet; a pivoted toggle arm connected to said core, a switch arm pivoted on the same pivot as the toggle arm and arranged to swing between said holding magnets so thatit may be held by either one of them in position to close the circuit through that magnet, a spring connecting said arms and extending past said pivot on one side thereof to hold said arm against one of said magnets and arranged to move over said pivot when said switch arm swings to the other magnet, whereby, when said switch is closed to energize the magnet then contacting the switch arm and the solenoid in the same circuit, the spring will be charged and when the-switch is opened the spring will swing the switch arm against the other magnet and in position to close the circuit therethrough, and whereby in either position of the switch arm the spring will yieldingly resist movement of said core and control member. 2. In an electrically operated control device comprising a pair of solenoids having a common core connected to a control member and reciprocable by alternately energizing said solenoids, andv two circuits controlled by a common switch and each including one of said solenoids and a holding magnet; a switch arm arranged to move between two positions, in either one of which it may be held by one of said magnets and close the circuit therethrough, and a spring operatively connecting said core and switch arm and yieldingly resisting movement of both the core and the switch arm and charged by movement of the core, so that, upon release of the switch arm by one of the holding magnets, it will be moved by the spring into the other of said positions.

' FRANCIS W. RAHRER. Y

SAM EDELMAN.

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