US3234342A

US3234342A - Multiple filament lamp socket with remotely controlled selective switch

Info

Publication number: US3234342A
Application number: US343984A
Authority: US
Inventors: George W Murray
Original assignee: Individual
Current assignee: Individual
Priority date: 1964-02-11
Filing date: 1964-02-11
Publication date: 1966-02-08
Anticipated expiration: 1983-02-08

Description

Feb. 8, 1966 G. w. MURRAY MULTIPLE FILAMENT LAMP SOCKET WITH REMOTELY CONTROLLED SELECTIVE SWITCH Filed Feb 11, 1964 9 4 A m 4 7 I 4% 2 3 6 4 3 6 4 n L 2 a 4 g FIG. 4

Gear 2 MMuI-r 1} BY INVENTOR.

FIG. 2

AT'I'ORNEY United States Patent MULTIPLE FILAMENT LAMP SOCKET WITH RE- MOTELY CONTROLLED SELECTIVE SWITCH George W. Murray, Lowellville, Ohio, assignor of onefourth to James J. Malsch, J12, Youngstown, Ghio, and

one-fifth to Paul Millan Filed Feb. 11, 1964, Ser. No. 343,984 1 Claim. (Cl. 200-51) This invention relates to electrical switches and more particularly to a magnetically operated electrical switch adapted for use in controlling incandescent lamps having two filaments.

The principal object of the invention is the provision of a magnetically operated electrical switch for controlling an incandescent lamp having two filaments by causing one of the filaments to be energized either by itself or in addition to the other filament so as to control the incandescent lamp to provide a dim light and a bright light.

A further object of the invention is the provision of an electrical switch for controlling an incandescent lamp having two filaments which may be installed in any outlet in which a standard incandescent lamp having one filament is received and energized.

A still further object of the invention is the provision of an electrical switch for controlling an incandescent lamp having two filaments which incorporates an electromagnetically operated indexing switching mechanism for selectively connecting the several filaments of the incandescent lamp with a power source.

Astill further object of the invention is the provision of an electrical switch for controlling an incandescent lamp having two filaments which is relatively simple in construction, small in size and capable of being installed in a remote location for actuation from a remote current controlling switch; for example, in a ceiling outlet under the usual control of a wall switch.

A still further object of the invention isthe provision of an electrical switch incorporating a rotatable switching element and an electromagnetic operated device for rotating the same upon making andbreaking of the circuit in connection with the electricalswitch.

The electrical switch disclosed herein comprises a simple and efficient device which may be installed, for example, in a ceiling outlet which normally receives a single filament incandescent light bulb and thereby adapt that outlet to receive a double filament electric light bulb and at the same time includes a selective switching mechanism actuated by an electromagnetic responsive device for selectively connecting the several filaments of the incandescent light bulb with the power source responsive to the making and breaking of the supplying circuit. The device is, therefor, arranged so that the two filament incandescent light bulb controlled thereby and energized therethrough may be so connected with the energizing circuit that either or both of the filaments thereof are energized.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being the intention to cover all changes and modifications of the example of the invention herein chosen for purposes of the disclosure, which do not constitute departures from the spirit and scope of the invention.

The invention is illustrated in the accompanying drawing, wherein:

FIGURE 1 is a perspective of a portion of a room showing a ceiling outlet, a wall switch controlling a circuit thereto and the device of the invention inserted therein and supporting a dual filament incandescent light bulb.

FIGURE 2 is an enlarged cross sectional elevation on line 22 of FIGURE 1.

FIGURE 3 is a horizontal cross section on line 33 of FIGURE 2; and

FIGURE 4 is a horizonal cross section on line 4-4 of FIGURE 2.

By referring to the drawings and FIGURE 1 in particular, it will be seen that a portion of an enclosure such as a room in a dwelling house has been illustrated and wherein the numeral 14 indicates the ceiling thereof and the numerals 11, 11 indicate the adjacent walls of the said room. The ceiling 10 supports a conventional ceiling outlet fixture 12 forming a screw thread socket for the reception and energization of a single filament incandescent light bulb, such as known in the art. The fixture 12 is connected to and controlled by a wall switch mounted on one of the walls 11 and having an operating arm 13 as will be understood by those skilled in the art. In FIGURE 1 of the drawings, an electricalswitch comprising a cylindrical body member generally indicated at 14 is shown threadably engaged in the socket of the fixture 12, heretofore referred to, and in turn providing a threaded aperture in its lowermost end in which a two filament incandescent light bulb 15 is shown installed.

By referring now to FIGURE 2 of the drawings, it will be seen that a portion of the fixture 12 is illustrated and that it includes a circular screw threaded receptacle 16 preferably metallic in character and connected by means of an extension 17 and fastener 18 with a conductor 19. Another conductor 20 is shown connected by a fastener 21 with a secondary conductor 22 which has a centrally located terminal relative to the circular screw threaded member 16, heretofore referred to. The construction just described will be recognized as comprising a typical conventional incandescent bulb receiving and energizing socket in a fixture.

In FIGURE 2 of the drawings cylindrical electrical switch 14 is shown having a vertical extension 23 thereon provided with a screw threaded metallic member 24 threadably engaged in the socket 12. A conductor 25 extends from the member 24 to a location within the electrical switch 14 as defined by a chamber 26. A coil 27 of an electromagnet is mounted in the chamber 26 and is connected with thefconductor 25. A central contact 28 on the upper central portion of the extension 23 of the electrical switch body 14 contacts the terminal on the conductor 22 heretofore referred to and in turn is connected with a conductor 29 which extends downwardly into the chamber 26 and has a connection 30 thereof connected with the coil 27 ofthe electrical magnet heretofore referred to. i

The core of the electromagnet is indicated by the numeral 31 and it is arranged to activate a hinged metallic arm 32 which is pivoted to a bracket on the side wall of the chamber 26 by a pivot 33. The opposite end of the arm 32 is apertured and a coil spring 34 is engaged in the aperture and has its opposite end engaged in an apertured bracket 35 positioned in the chamber 26 in spaced relation to the arm 32 so as to normally bias the arm 32 downwardly and away from the core 31 of the electromagnetic coil 27.

This construction is also illustrated in FIGURE 3 of the drawings wherein it will be noted the arm 32 is spaced approximately midway between the opposite sides of the chamber 26 in the electrical switch body 14 and above a transversely positioned rotatably mounted shaft 36. One wall of the electrical switch 14 defining the chamber 26 is substantially flat and is so illustrated in FIGURE 3 of the drawings and indicated by the numeral 37. A plurality of circumferentially spaced

contacts

38, 39 and 40 are positioned radially with respect to the rotatable shaft 36 and positioned on a side wall defining a portion Paten'ted' Feb: 8 1966-.

'of the chamber 26 as best seen in FIGURES 2, 3 and 4 of the drawings. The contact Stiis in connection with a conductor 41 which also extends to an oppositely disposed contact 40A positioned alongside the contact 49 and at the same time establishes communication with a terminal 42 in the lower end of the electrical switch body 14 positioned for engagement with an annular contact ring 43 found on the outermost end of the socket portion 44 of a dual filament incandescent bulb 45, which is shown with parts broken away. A conductor 46 extends from a central terminal 47 in-the end of the electrical switch body 14 to the contact 40 and the contact 39 hereinbefore described.

The rotatable shaft 36 has a switch element 47 positioned thereon adjacent the eyeleted end of the conductor 29, heretofore described, and together with the same is urged by a coil spring 48 toward the side wall of the chamber 26 on which the circumferentially spaced radially positioned

contacts

49 and 39, 4t} and 40A are located, as best seen in FIGURE 4 of the drawings. Thus, electrical energy in the conductor 29 is conveyed to the switch element 47 which is movable for engagement with the

contacts

49, 39, 4t) and 40A, as will be understood by those skilled in the art and in FIGURES 2 and 4 of the drawings, it is shown contacting the

contacts

40 and 40A so that the electrical energy will flow therefrom into the

conductors

41 and 46 from whence it will be directed to the terminals 42 and 47 respectively and thus enable both filaments of the dual filament incandescent bulb to be illuminated simultaneously.

It will be understood that when the switch element 47 is moved to as to engage the contact 39, only one of the conductors, that indicated by the numeral 46, is energized and this in turn energizes the terminal 47 so that only one of the filaments in the dual filament incandescent bulb is energized, thus providing a different degree of light. By the same token, when the contact 38 is engaged by the switch element 47 the conductor 41 is energized along with terminal 42 andonly the other one of the filaments of the dual filament incandescent bulb 45 is energized. Thus, three degrees of light are possible by alternately connecting one or the other or both of the dual filaments of the bulb as the switch element 47 revolves from one of the

contacts

49, 39, 4t) and 46A to the other.

In order that this action may be automatically accomplished by making and breaking the circuit, a lever 38 is pivoted freely by a pivot 50 to a metallic arm 32 and depends from the pivot and is provided with a-hook-like shoulder 51 positioned so that it will move vertically adjacent one side of the rotatable shaft 36 and so as to catch and move one of a plurality of circumferentially spaced radially extending

arms

52, 52 secured to the shaft 36 as best seen in FIGURES 2 and 4 of the drawings.

Operation In operating the device ofthe invention, it is'installed in the socket as disclosed and a dual filament incandescent bulb is installed in the device as disclosed. The electrical 4. circuit to the device which is controlled, for example, by the Wall switch as shown-in FIGURE 1 is established whereupon the electromagnet 27 causes its core 31 to attract and move the metallic arm 32 upwardly toward the same. This action causes the hook 511 on the lever 3% to engage one of the circumferentially positioned arms 52 and rotate the rotatable shaft 36 and hence cause the switch element 47 to move from one of the contacts 49,

- 39, 40 and 40A to the other, whereupon one or the other or both of the filaments in the incandescent light bulb 45 will be selectively energized. Thus, the desired degree of light can be controlled by merely moving the wall switch from off to on position which will cause the stepby-step action just described to take place in the electrical switch 14 in the sequence described.

It will thus be seen that a novel and extremely simple device for controlling the filaments in a dual filament incandescent bulb from a remote location has been disclosed and which device meets the several objects of the invention, and having thus described my invention, what I claim is:

An electrical unit comprising a casing enclosing an electrically energizable coil having a fixed core piece, a metallic arm pivoted adjacent said core piece and a spring normally urging said arm away from said core piece, a lever pivoted to said metallic arm having a hook formed on the free end thereof, a rotatable shaft positioned adjacent the end of said lever, arms on said shaft arranged in circumferentially spaced relation and positioned adjacent said hook on said lever for engagement therewith, a switch element on said shaft rotatable therewith, a plurality of contacts in, circumferentially spaced radially positioned arrangement about said shaft and adjacent said switch element, a lamp bulb receiving socket in one end of said casing terminals in said socket, conductors extending between said terminals in said socket and said coil and contacts, said conductors connected to said contacts so that rotation of said shaft and switch element electrically connects one or more of said contacts with said terminals at a given time, and secondary electrical conductors extending from said switch element and one of said terminals in said socket to secondary terminals, a lamp bulb socket engaging device on the other end of said casing, said secondary terminals being located on said lamp bulb socket engaging device.

References @ited by the Examiner UNITED STATES PATENTS 652,151 6/1900 Tirrill 200 780,678 1/1905 Meyers 315-64 X 2,174,086 9/ 1939 Hofimann 200-105 FOREIGN PATENTS 189,804 12/ 1922 Great Britain.

KATHLEEN H. CLAFFY, Primary Examiner.

BERNARD A. GILHEANY, Examiner.