US1692068A - Multipole multibranch electric switch - Google Patents

Description

Nov. 20, '1 928., 1,692,068 1 A. R. WOLFE MULTIPOLE MULTIBRANCH ELECTRIC SWITCH Filed April 1925 2 Sheets-Sheet l flecw/fi 16. WOLFE INVENTOR ATTORNEY Nov. 20, 1928.

A. R. WOLFE MULTIPOLE MULTIBRANCH ELECTRIC SWITCH Filed April 5, 925 2 Sheets-Sheet 2 PM m m 0 ATTORNEY is of the former type;

Patented Nev. 20,1928.

p t WOLFE, OF SUMMIT, NEW JERSEY.

1 \KULTIPQLE uumnsmon ELECTRIC swnroH.

I a lication iued April 3. 1925. Serial No. 20,541. i

My invention relatesto improvements in multipole multibranch switches of the low loss blade and receptacle type, having either stationar inain distributing pole blades and movable ranch polereceptacles, or stationary. main distributing pole recepticles and movable branch pole blades. This switch described and illustratediin this'sp'ecification The objects of my improvementare, first, to provide a means, of directly and quickly connectingthe leads from one aerial or loop,

one ground connection, one source of plate current, one source of filament current'and one loud speaker as may be required to any one of three or more (the larger number de pending upon the desig'n'of the switch)"radio or radiophone receiving sets as desired for demonstation or other purposes, and at the same time have no dead end or noncurrent carrying conductors connected to the circuits, and have the leads connecting said sources of current to the receiving set of practically ,the same length reg'ardless as to which one ofthe three orimore receiving sets are so connected. (The latter is accomplished in connection withthe use'of themulti ole, multibranch switch by having the receiving sets located equidistant radially'from the said switch) second, to provide for individualoperation of any one of thebranch ways of the switch, by local control,or by extendedcontrol from a point withinfour feet ofthe switch and near on a'line with the top center of the pedestal shaft and said branch way; third, to proudce a type of multipole multibranch switch which can be readily designed for voltages in general use, and to most efficiently distribute from'a central supply of current or currents requiring any number of poles to any number of branches or points of the compass; fourth, to provide a multipole multibranch switch of such construction that it can readily be provided with ametal cover, rendering the] switch practically dust proof without interferringgwith its ,operation The apparatus and mechanism of'one form of the invention, a seventeen 'poleeight branch electric" switchis illustrated in the accompanying drawings,in which Fig. 1 is an ap proximate full size'vertical section of the switch on the broken line 11, Fig. 2, with the branch binding post bars 28, branch binding posts 29 and insulated flexible leads 3O omitted; Fig. 2 is a view looking down on the top of the entire switch withcover removed,- and with the base and lower portion propor tionately enlarged and brought into view; Fig. 3'is a view of a part of the switch showing one end of one of the adjustable supportingguides14; Fig. 4 is a cross section view I of the shaft bushing 7, and a view inperspective of one main distributing pole 8 in place on said bushing. Similar numerals refer to similar parts throughout'the several views.

The pedestal shaft 1 rigidly supports the metal top plate 4, between the nuts 5 and 6, andis rigidly secured to the supporting base 2, to which 3 the metal bottom plate, is secured by machine screws. 7 a cylindrical bushing of insulating material, fits snugly over shaft 1 covering nearly its ventire length, and is rigidly secured to it by counter sunk machine screws. The washer shaped blades 8 are the main distributing poles of the switch. Theyfit over the bushing 7, and are provided with a permanent key 9, which fits into keyway 10, on the bushing 7 preventing them from turning'when in place. i

11 are bushings of insulating material which fit over bushing 7, and serve to support and separate the main distributing poles 8, and by screwing up on nut '6 pressure is brought to bear on the entire column of bushings 11, and main distributing poles 8', thus holding the latter rigidly in place. The plates 3 and 4 have an equal number of equally spaced rectangular slots 12, in which travel the guiding shoulders 13, of the adjustable metal supporting guides 14., one of which support and guideeach end of each branch pole bar 15, which are made of insulating material andto which the spring copper or brass receptacle contacts 16, which are the branch polesof the switch, are secured. A second pair-of shoulders 17 on each adjustable supporting guide 14, forms their slidin g support which bears on a portion of the upper surface of bottom plate 3 or under' surface of top plate 4 as the case may be.

One adjustable supporting guide 14 is clamped over each end of each branch pole bar 15 by means of tightening the nuts of bolts 18, or by loosening the nuts, the vertical position of each branch pole bar 15, and its supporting guides 14, may be varied a dis tance limited by the length of the slots 19, in the latter.

T 0 each end ofthe metal control rods 20, which pass througlr bearing holes in the plates 3 and is secured a cam lever 21, having a rectangularslot WlllCll fits over the projecting stud 22, ing guides 14. r 7

It can readily be seen that as the two cam levers at ends of any onecontrol rod"-20*are placed over the stud 22 and secured to said control rod in a position parallelto each other, each branch polebar 15 will at all times be parallel "to the pedestal shaft 1, and a* partial revolution of said control rod in its'bearings will move the branclrpoles 16 intoicontact, oroutot contact, with their re spective main distributing poles 8 11s may be desired, and the springs 3l tend to maintain those positions.

Referring to Fig. 2'it will be'noticed that one ofthe branch pole are closed. In this position the-branch pole receptacles 16,'close over the main distributing poleblades 8,1nalring contact for a'distanceot one fourth of an inch;

The rotating movement of the control rod 20 is. effected either by direct control by nieans of the insulated handles 23, which are secured to the controlrods 20 by set screw and as shown in Fig. 2,"orby extended control, by means of extension rods connected to the stud bearing pins 24, onthe cams21.

- Each branch pole bar 15, together with its respective equipmentrequired for its proper operation and connection, constitutes a branch way ortthe switch.-

Each main distributing poleS has gan indix'idual insulated: wire 25, shown" by the broken parallel lines in Fig.2,soldererd to it and connecting. it with. a respective binding post 26, on the'mainbinding post barr27, whichiis made of insulated material and is secured to aprojection of the top pla ted, shown in Fig; 2, and to'the base 2 by machine screws. Onthis bar 27'are mounted seventeen binding posts orone i'or each pole of the switch, to which, leads fromvthe sourcesof current or currents to be distributed should ordinarily be connected. I desire tovstate herethat it is not absolutely necessary to so connect the supplyleads froni'the sources of current or currents toibedistrilnited inorderto operate the switclninstead, theymay be connected to the binding'posts29, of'any one branch way not in use, and the branch way-to which connected will then serve as the main feed switch. orcutout switch, as desired, for allot said supply leads.

The branch binding post bars 28, are made of insulatingmaterial and are secured by maof the adjustable support chine screws to projections of the top plate l and to the base 2 in a position parallel to the shaft 1, and to each other. On each of the branch binding post bars are mounted the, branch binding posts 29, there being one bind- I am. aware that multipoledouble throw or two branch switches,having'knifeblade main distributing poles whichi'canJbethrown into contact with respective branch" pole 1 recepjbeen'in general use prior'to myinve'ntion, and I do not claim such a switch; but

I claim:

1. In a". multipole multibi'anch electric switchoomprising a' central column of dis tributing poles insulated'fronreach other, dis trib uter terminals therefor, a pluralityiof col umns ofreceptor contacts insulated from each other, arranged radially about said"central column", receptor terminals" therefor; and means whereby anynumber of columns of receptor contacts inay bemoved radially with respect to said central column to complete the circuit between said receptor and Tdistributer terminals.

2; In a inultipole mult'ibran'ch electric switch, a central-"column ot'poles insulated from each other and spacedF-apart apredtermineddistance, a plurality; of columns of similarily arranged contacts di'sposed'around 'said centralcolumn and means whereby the radially disposed columns are movedto make contact with said central column of poles.

3. In a multipole multibranch electric switch, a central column ofpoles insulated from each other and spaced apart a predetermined distance, a plurality of columns of similarly arranged contacts di'sposedaround said central column and means whereby the radially disposed columns are movedradial- 1y to make contact'with said central column of poles. V.

4. In a multipole mult'ibra'nch electric switch, a central column of'poles insulated from each other and spaceda part a predetermined distance, a plurality; of columns of similarly arranged contacts disposed .around said central column at equal'angl'es and means whereby the radially disposedcolumnsrare moved radially to make contactwith'saidicentral column of poles.

5. In a multipole multibranehswitclncoin tacles of either one oftwobranchi ways, have" I 6 said support, a second" face plate,-a plurality column.

prisinga base, an end plate mounted 011 said ed between said face plates, terminals therebase, a central vertical support mounted on for, and means whereby any number of said said base, alternate washer shaped conducting columns of receptor contacts are moved ra- 1 blades and insulating bushings surrounding dially to make contact with Said distributing of columns of receptor contacts radially are r ranged about said center column and mount ARCHIE REXALD WOLFE.

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