Патент USA US2128726код для вставки
Aug. 30, 1938. V ' E. CLARK 2,128,726 VOLTAGE~SELECTOR AND WIRING TERMINAL, PARTICULARLY FOR USE THEREWITH .Filed Feb. 6, 1935 ' 2. ~ O O 5~© 4 O 2/‘0—- 0/ 6/ ' '5. ' ‘ _ — :4 250- ©— 13 250-‘ @/7 O - O O ” WIIIIIIIIHIIIII "'u'ri lijg'lgl m'u' 7 ?vsumr/a 4 6' v INVENTOR Ernest Clark "A. ORNEY 2,128,726 Patented Aug. 30, 1938 UNITED STATES 2,128,726 VOLTAGE SELECTOR AND WIRING TERRIE NAL, PARTICULARLY FOR USE» THERE WITH Ernest Clark, Beeston, England, assignor to United-Carr Fastener Corporation, Cambridge, Mass, a corporation of Massachusetts Application February 6, 1935, Serial No. 5,249 5 Claims. (Cl. 173—328) ‘The present invention relates to switches and more particularly to voltage selector switches, and aims generally to improve existing switches for that purpose. 5 One of the principal objects and advantages of "the invention is to improve and simplify the construction of voltage selector switches to the end that a simple and inexpensive switch may be made to permit one or more electrically con 10‘ trolled devices to be selectively connected in cir cuit with different lines of varying voltages. Other aims and advantages will be apparent from a consideration of the followingdetailed de 7 scription of one preferred embodiment of the in which is illustrated‘in the accompanying 115 Y vention drawing. In the drawing Fig. 1 is a front elevation of the improved switch; 20 . . Fig; 2 is a similar view with the cover panel removed; Fig. 3 is a rear elevation of the switch; Fig. 4 is an enlarged longitudinal sectional view taken on the line 4--4 of Fig. 1; and Fig. 5 is a detail perspective view of one of the 25 terminals according to one embodiment of the invention. The particular embodiment of the invention il lustrated in the drawing may advantageously 30 comprise a base i of suitable insulating material, such as a ?brous or phenolic condensation insu lating material to which is connected a plurality of lead-in terminals 2, each of which may carry a particular voltage different from the other. In 35 the illustrated embodiment, three lead-in termi nals 2 are shown, and by way of example they may carry voltages of 210, 230 and 250 respective ly. The base I may also be provided with a plu rality of take-off terminals 3, two of which are 40 shown in the illustrated embodiment although it is apparent that one or more of these terminals may be used, each of the terminals 3 to be con nected to an electrically operated device. The base i may advantageously be mounted 45 upon a panel 4 of suitable non-conducting mate rial, and is advantageously spaced therefrom by means of insulating spaces 5 (see Fig. 4). On the side of the panel 4, opposite the base I there is a conductor strip or bus bar 6 conveniently 50 formed of a thin ribbon of conducting material and electrically connected to the take-off termi nals 3 in any suitable manner, but advantageous ly by means of fastening members 1 acting to secure the panel 4, contact strip 6, base i and terminals 3 in assembled relation. Conveniently this fastening member may be in the form of a tubular fastening, such as a rivet, the ends of which are adapted to be upset over the contact strip 6 and terminal 3, and the spacers 5 may sur round the rivet. Thus the base i with its asso ciated parts and the panel 4 and the parts carried thereby are secured together in strong assembled relation. The strip or bus bar 6 is preferably formed with a plurality of switch plug receiving aper 10 tures 3, one in registry with each of the lead-in terminals 2. Each of the terminals 2 is provided with a plug receiving socket 9 adapted to receive and hold the end of a removable switch plug ill, which preferably is formed with a conducting stem l i and a non-conducting handle portion l2. In the form of invention illustrated in the drawing, the stem l l of the switch plug is thread ed to be screwed into a threaded opening in the plug receiving socket 9 so as to securely hold the plug in place. However, my invention is not to be restricted to this particular form of plug as other forms of a plug or jack engaging a resilient socket 9 may be used satisfactorily. As will be apparent when the plug H1 is insert 25 ed in any one of the openings 9, electrical connec tion is made between the registering lead-in ter minal 2 and the take-off terminal 3 through the conducting stem l I of the plug and the conductor strip 6. In this manner the take-oil terminals may be connected in circuit with the lead-in ter minal carrying the desired voltage. Advanta geously the panel member may be covered by a cover panel l3 provided with a plurality of open ings it in registry with the opening 9, and the 35 openings it may be sufficiently large to receive the shouldered stem ll of the‘ plug it so that good electrical contact may be made between the plug and conducting strip 6. Either or both of the terminals 2 or 3 may con 40 veniently be made in the form of wiring tabs as shown in Fig. 5, in which case they may be pref erably stamped from a single piece of metal to provide a body 15 centrally apertured as at it having laterally extending wings ll formed with 45 prongs l8 adapted to be bent into clenching en gagement with the base or other support. An extension l9 apertured as at 20 provides a suit able means to which the conductor may be se 50 cured as by soldering. It will be understood that the invention is not to be restricted to the form and construction shown and described above which is intended for illustrative purposes only, but that the invention ‘ may be embodied in other forms and arrange 2 2,128,726 ments within the scope of the appended claims. Also, the invention is usable for switches having one or more lead-in terminals and one or more take-off terminals. I claim: 1. A voltage selector switch comprising a rela tively thin base of non-conducting material, a thin insulating panel superposed upon said base, a plurality of lead-in terminals carried by said base having a portion disposed between said base and said panel, at least one take-01f terminal carried by said base, a conducting strip disposed on the other side of said panel from said base and fastening means for connecting said base, 15 strip and panel together, means connecting said strip and take-off terminal in electrical contact and a removable switch plug for establishing elec trical contact between said strip and one of said lead-in terminals. 20 2. A voltage selector switch comprising a nar row base of thin insulating material, a plurality of lead-in terminals and at least one take-off terminal, each of said terminals carried by said base, said lead-in terminals having plug-receiv 25, ing portions, a conducting strip, a wide panel of thin insulating material interposed between said strip and lead-in terminals, said wide panel overlying the lateral edges of said base and said terminals except at the plug-receiving portions 30 of said lead-in terminals, a fastening means for parallel relation to said base and adapted for connection to an electrical conductor, a take-off terminal carried by said base and having a wire receiving tab extending in substantially the di rection of the tabs of said lead-in terminals, a 5 conducting strip normally insulated from said lead-in terminals but in electrical contact with said take-off terminal, and means for optionally establishing an electrical conducting connection between said strip and one of said lead-in ter 1O minals. 4. A voltage selector switch comprising a thin base of non-conducting material, a plurality of lead-in terminals, a plurality of take-01f termi nals, each of said terminals carried by said base and having a wire-receiving tab extending lat erally beyond the edge of said base, a conducting strip, a thin insulating panel interposed between said strip and lead-in terminals, and means per manently connecting said strip and take-off ter 20 minals in electrical contact and providing the sole means for connecting said base, strip and panel together. 5. A voltage selector device of the class de scribed comprising a thin base plate of insulat 25 ing material, a number of independent contacts attached to said plate, each of said contacts hav ing a wiring terminal and a connector-receiving portion, said terminal and said connector-receiv movable switch plug for establishing electrical contact between said strip and lead-in terminals. 3, A voltage selector switch comprising a base of insulating material, a plurality of lead-in ter minals carried by said base, said lead-in terminals ing portion of each of said. contacts being in 30 tegral one with another, a second thin plate of insulating material covering said contacts ex cept at the connector-receiving portions, a con ductor strip superposed upon said second plate and having apertures in alignment with the con 35 nector-receiving‘ portions and a removable con nector for optionally establishing an electrical connection between said strip and one of said comprising a body portion and a tab projecting contact terminals. connecting said base, strip and panel together, a means permanently connecting said strip and take-off terminal in electrical contact and a re 401 laterally from said body portion in substantially ' ERNEST CLARK.