US1409561A

US1409561A - Automatic multiple-switch-controlling machine

Info

Publication number: US1409561A
Application number: US401153A
Authority: US
Inventors: Everett A Margeson; Herrold Charles David
Original assignee: GERTRUDE ANNIE MARGESON
Current assignee: GERTRUDE ANNIE MARGESON
Priority date: 1920-03-29
Filing date: 1920-08-04
Publication date: 1922-03-14
Anticipated expiration: 1939-03-14

Description

E. A. MARGESON AND C. D. HERROLD AUTOMATIC MULTIPLE SWITCH CONTROLLING MACHINE.

APPLICATION FILED AUG-4, I920.

Patented'Man 14,1922.

6 SHEETS-SHEET I.

milnm I' I II III ii uIIIIIIIIIIIlIIIITIIII' IN l/E N TOQS.

A MAQGESON- g. 0. HEQQOL o.

A T TOQNE E. A. MARGESON AND C. D. HERROLD. AUTOMATICMULTIPLE SWITCH CONTROLLING MACHINE- APPLlCATlON man we, I923 1 ,409,561 Patented Mar: 14, 1922.

6 SHEETS-SHEET 2.

INVE/VTGQS- E.A MAQGESON. C. D. HEEE ATTOQ E. A. MARGESON AND 0. n. HERROLD. AUTOMATIC MULTIPLE SWITCH CONTROLLING MACHINE. APPLICATION HLED AUGJ4. 1920.

1,409,561. Patented Mar. 14, 1922.

6 SHEETS-SHEET 3.

M/VENTODS. EA. MAEGESOIV- BY am A r roe/w: x

E. A. MARGESON AND C. D. HERROLD.

AUTOMATIC MULTIPLE SWITCH CONTROLLING MACHINE. APPLICATIQN FILED AUG. 4, I920- 1,409,56 1. Patented Mar. 14, 1922.

6 SHEETS-SHEET 4.

IN VE N 7026.

5. MAQGE-SON- 0.0. HEQQOLD.

A r-ropwn E. A. MARGESON AND C. D. HERROLD. AUTOMATIC MULTIPLE SWITCH CONTROLLING MACHINE. V APPLIQATTON FILEYD AUG.4, 1920- ,409 561. aw te 'M 1 1 2- 6 SHEETS-HEET 5.

EA. [meat-80M 0.0. HfQQOLD.

BY W

A 'TTO NEY.

E. A. MA RGESON AND C. D. HERROLD. AUTOMATIC MULTIFLE'SWITCH CONTROLLING MACHINE.

. APPLICATKON FILED AUG=4. I920.

1,409,561 Patented Mar. 14, 1922.

6 SHEETS-SHEET 5- E. MA QGESO/V. C.

' H QEOLD.

'BY I INVEN 0229.

. EVERETT. AnGEsoN AND CHARLES im :HQRRQLD, dis-Air Jose, cnmifionuin,

. ASSIGNORS T0 ennrncnn ANNIE MAneEsoN, OF SAN JOSE, CALIFORNIA.

1,539,561. 1 Original application filed March 29,

To all who m itmag concern:

1 Beit' known that we, EVERETT :A 'MARcnsoN and GrIARLns-DAvm Hnnnow, citizens of theUnited States, residing at San Jose, in the county of Santa Clara and State'of California, have invented a-new' and usefullmprovement in Automatic Multiple-Switch- Controliing Machines, of which the following is a specification This invention relates to multiple switch controlling machine and is zrdivi'sion of'our copending application entitled Automatic multiple switchcontrolling niachine, filed March 29, 1920, Serial K013629580, I I

One of the objects of the present inventionis to provide an automatic multiple switch controlling machine whereby several independent electric circuits may be automatically controlled, and especially to v provide a multiple switch controllingmachine whereby one or more motor driven street indicatin'gmachines maybe intermittently and independently operated.

Another object ofthe invention is to provide a multiple switch controlling machine, an indicating machine and an electric motor for driving the same and in conjunction therewith toprovide means on the multiple switch controlling machine for preparing a shunt" circuit around the motor which is adapte'dto be closed by an automatic switch 'on the indicating machine and opened after predetermined interval by another automatic switch on. the multiple switch controlling machine; 1

- Further objectswill hereinafter "appear.

i The invention consists of the part-sand the" construction, combination and arrangement of parts as hereinafter morefully described and claimed, having reference to the accompanying drawings, inwhich- V '-Fig. 1 is aside elevation of the automatic multiple switch controlling machine.

Fig. 2 is a front view :of the same, par

tially broken away'andpartially in section. I Fig.3 is a plan view of the indicating ma chine, V

Fig. 4 is a 81(16 elevation of the same v -L Fig..'5"1s a partial sldeelevation cf'a an automatic AUTOMATIC MU TIrLE-sw-r'rcri-cofiaRoLn nG MACHINE. 1

specification of peter te. I ,PateiltedfMar.

1920, Serial No. 369,780., Divided and his application filed August 1920. Serial No. 401,153.

street car, showing: the applicationbf the invention. .1 r 1 Fig. 6 is anenlarged detail sectional view of the reversing switch drum:

Flg'. 7 1s a,w1r1ng diagram showing the connectionsformed between the indicating machines and the automatic multiple switch controlling machine. K w T F'g.:8 is a section taken'on the line shown near'the right end of .Fig. 3. 4

' Referring to the drawings in detail, and particularly to Figs. 1 and 2, which are the drawings of the automatic multiple switch controlling machine, Alindicates ar-ma'in frame of suitableiconstruction, in which is "journalled a sh'aft2. Turnably mounted on the shaft is adrumBand keyed to the shaft or otherwise securedthereto-is a.- pair of rack gears 4t, one on: each side of the drum.

The rack gears are right and left"hand,-or in other words, reversedflwith relation to eachother, I and both gears 'are' engaged. by pawlsfi, which are'carried by ;the-.drum; Formed :on the outerfaceof the drum is a threaded or helix .6, and projecting {from the face of :the heliX-arevpinsor projections 7 which are adaptedto intermittently rotate a. pin gear =8 which is keyed but slidably V 'mounted'on shaftf9f- This shaft is supportedin journal. member 10 above the drum, and secured on one end of the. shaft is a wheel 11, on-which is formed six cam projections suchas'indicatedf at: 12. -;T here' are twelve pins v011% thepin. gear 8 and a twelfth. of 'aflrevolution is; therefore, transmitted'to-the pingearandtheshaft 9,to-

gether with the cam wheel 11 when the pin gear is: engaged by a projection? carried by the helix. TheshaftgQ, together with the gears at, and the drumfi, aremechanically driven. The drive provided consistsofa flexible shaft, :13, which 1 is positively "driven from the car 7 wheels bymeans V ofthe gears 14., (*See F 1g. 5;) Turningmovement im;

parted to thej fiexibleshaftis. transmitted through a jaw .or a pin clutch such. as shown at 15 to a shaft: 16 andjfrom tlal-isshaft to;

a vertically disposed. shaft. 17 ,1 whichfis jou'rnalled in the mainiframeA; through a bevel gear train such; asshown at 1 8., S e-;-

cured on the shaft 17 is a worm 19, and inter-meshing therewith and secured on one end ofthe shaft 2.is a worm gear 20. In other words a positive driving connection is formed between the car wheels and the shaft 2, the speed of the shaft 2 being however materially lesseneddu'e to thegear re duction provide'd'by the bevel gears 18 and the worm gears 19. and 20. The reduced speed transmitted to the shaft 2 is'again transmitted to the drum 3 through one or another 'of the rack gears 4 and the pawls Fig. 2, it will be seen that a crank arm 22 is pivotallv. secured to the main frame A as'at 23. he upper end of this crank arm is engaged by the pin gear 8 when it has travelled a predetermined distance along theshaft 9. A rocking'movement will thus be transmitted to the'crank arm 22, causing its upper end to swing upwardly and its lower end 24 inwardly. This will cause the lower end 24 to assume a position in alignment with the adjacent or cooperating pawl 5, and as this is provided with a raised cam projection 25 (see Fig. 1), it is obvious that-passage of the pawl under the arm' 24 will cause depression of the cam end of the pawl and raising'of its opposite engaging end, thus freeing the pawl with relation to"the.cooperating rack gear-and automatically breaking the driving connection.

This automatic break between the drum and one or the other of its driving connectlons is necessary. For instance, if a car is travelling on a certain run and steep hills or slippery weather is encountered it is possible that the car wheels will slip while the drum'continues rotating." This is objectionable as'it throws the drumor the pins car.- ried' on the helix out'of time with the car,

orin other words, causes streets to be an-- nounced or displayed before their proper sequence as will hereinafter be described. Slippage of the car wheels will under all conditions cause the drum to advance and it will therefore cause it to display the street names too early. in fact slippage might take place to such an extent as to display a street two or, three blocks ahead of time of reaching the same. It is therefore obvlous that-the drum'will turn its predetermined number of revolutions before the end'of the run is reached and that to correct the slippage, it is only necessary to automatically disconnect the driving connection between the'gears 4 and the drum. With the driving connection automatically broken by means of the crank arm 22,.it is possible for shaft 2 to turn without transmitting further movement to the drum. The drumtherefore' re mains stationary untiltl1e-carreaches the end of its run and any slippagethat may have taken place is thus corrected as the car willnow be reversed and will travel in the opposite'direction.

Manually actuated means hasalso been provided for correcting the position of the drum. This is accomplished by first throwing out the pin, clutch 15, for instance by means of arocker arm 15 and-a connecting lever 15*. A hand crank 26 is then grasped and rotated in the direction desired. This hand crank is secured on a. shaft 27 journalled in the base of the main frame and this shaft in turn carries a sprocket gear 28,

which transmits rotation to the shaft 17 through, means of a chain'29-and a sprocket.

gear 30 secured on the lowermost end of shaft 17. This permits the drum to be turned until. the correct street is indicated and is only used when the car is side-tracked for some reason or another or possibly after having traversed another route. It may-of course be rendered entirelyinoperableunder these conditions by disconnecting; the clutch 15.

. The construction of the'drum, the mounting and driving of the same, and themeans for adjusting or correcting its position has now been described, and it is therefore thought that the function of the cam wheel 11 should follow. This wheel, as previously 7 stated, is provided with siX cams 12 and is intermittently rotated onertwelfth of a revolution. Pivotally attached to the main frame, as at 3]., at a point above the shaft 9, is a pair of switch arms indicated by

numerals

32 and 33. The switch 32 makes and breaks circuits hereinafter to be described between the double contacts 34: and

35, while the-switch arm makes and breaks circuits between the double contacts 36 and '37. The I switches 32 and 33 will hereinafter be known as the master switches and the circuits established or broken thereby will further be'described. The

switch arms

32 and 83 are moved from one position to another by means of the cams 12 and as these only turnone-twelfth of a revolution when actuated, it'is obvious that the switch arm 32 will either engage the contacts'35,

for instance when resting in'arecess of'thev cam 12, and that it will contact with'the terminals 34 when engaged by a. cam. The

operation of th'e'switch arm 83 is si'1n'ilar,

and as the switch arms are opposite to each other they willsnnultaneously move in one direction or another, thus engaging the doumittently change the position of the master switches 32 and 33. The machine is however provided with a reversing switch which cooperates-with the

switches

32 and 33, and also with other switches to be hereinafter described. This switch is generally indicated at B. It consists of a drum 38, which isi supp'orted by a shaft '39.- This shaftis continuously rotated from shaft 17 bymeans of aworm gear drive 17 but rotary movement is only transmitted to thedrum whenever the street car starts back at the end of its run. This is accomplished asfollows:

Secured interiorv of the drum on the shaft 39 is a pin 40, and interposed between the gagement with a collar 42 secured on the shaft. A friction drive or connection is thus formed between the drum. and the shaft which becomes operable to turn the drum one-fourth of a revolution whenever the direction of rotation of shaft 17 is reversed. This will be more easily understood when it is stated that a segment-like lug 43 is securedon one end 'of the drum, which is adapted to engage the upper portion of the frame at the points indicated at 44 and 45. For instance if the shaft 17 is turning in' -'a direction which would cause the friction drive formed between shaft 39 and the collar 42 to turn in the direction of arrow a, (see Fig. 1) then drum 38 will rotate until the stop segment 43 engages the point.

or stop 44 formed by the frame; If the direction of shaft 17 is reversed, then it-is obvious that the rotation of shaft 39 will be reversed and that the friction drive will thus cause the drum to revolve in a direction op'p'osite'to arrow at and it will revolve in this direction untilthe segment 43cmgages the point of the main frame indicated at 45. An approximate one-fourth of a revolutioii thus automatically transmitted to the reversing switch drum whenever'the direction of rotation of shaft 17 is changed hides the direction of rotation of shaft 17 is only changed when the car is reversechit can readilybe seen thatthe reversing drum or switclronly changes its position at each end of a given route diate points."

or run, or at interme- The function of the reversing switch and its cooperation with the master switches 32 and 33 will hereinafter be described. may, however; be stated that the drum is constructed of insulating material such as shown in Fig. 6 and that it carries in all twenty-two segments which are insulated therefrom These segments are more clearly illustrated in Fig; 7 EtIlCl' \Vlll hereinafter be referred to by reference numerals; The segments are engaged by sixteen separate'.

springiactuated contacts, there being eight on each sideof the main frame as indicated at C and D.-

automatic multiple switch controlling machine, it is thought necessary t c-give a brief '4 and is constructed as follows: n

46 indicates a base platoon which is secured a-pa ir of frame sections 47 and 48. Suitably journalled'in said frame area pair of rollers 49 and 50 and apair of idlers 51 and 52. 53 indicates a belt constructed of any suitable material such as paper or fabric. This belt is carried'by the rollers 49 and 50 and is guided by theidlers 51 and 52. One end of this belt is secured to the roller 49'and the opposite end to the roller 50. The rollers willr; therefore alternately serve 'as drivers and receivers and as the belthasstreet or station names printed or-otherwise formed thereon, it is obvious that an intermittent movement must be transmitted to the rollers and the belt carried thereby to permit each name to be successively-'- displayed through an'opening54, which isformed inia casing-55 enclosing the entire mechanism:

The rollers 49 and'50 are in this instance driven by means of an electricmotor :56 and this drive can be traced as follows:

57 indicates a horizontally positioned shaft which is journalled asat 58 in abraoket member'59 secured upon the base. Secured on one end of the shaft is abevel gear .60 which intermeshes with a similargear .61 upon the motor shaft, and securedfto the opposite end of the shaft 57 is a worm gear 62-.which intermeshes wit-h a worm wheel 63. The gear 63 is secured on a shaft64 and this is in turn journalledin the main frame" as indicated at 65., Loosely mounted on the shaft 64 is a. pair of sprocketuwhee'ls 66 and 67 and connectingsaid sprockets'with a pair of sprock'ets 68' and 69 are

endless driving chains

71 and 70. Tlie'respective chains" andv sprocket-s .are provided for the,

purpose of drivlng: one or another of the belt plished as follows: we e Suitably securedon the inner faces of the sprockets 66 and 67 are pins'66 'and 67 diate the sprockets 66and-67,.y,is;a clutch su-pportingrolls 49 and 50'and this is aCCOIiIf Turnably mounted on the shaft 64,- intermemember 72 and. projecting from; either end 10." To fully understand the operation of the V clamp arms 76, the tension-of which may lac-regulated by a screw 77.

The motor 56 is of the series wound type and is reversible and is therefore capable of transmitting power to shaft 57 in either direction. A drive transmitted gears 60, 61, 62 and 63, in one direction will first cause the pin to travel from one end of slot '7 5, formed in the clutch sleeve, to-the other. This causes the sleeve to move lengthwise of the shaft64, pulling pin 74 into engagement with pin66' on sprocket 66. The longitudinal movement .of .the sleeve takes place while pin 75 travels from one end of the slot to the other, sleeve 72 being prevented from rotating at this moment for the simple reason that it is held against rotary movement by the spring actuated clamp arms. The frictional engagement of said arms is however not sufficient to hold the sleeve against rotation when pin 75? reaches the opposite end of the slot.

Power will therefore be transmitted through shaft 64, pins 75, sleeve 72, and pins 73 and 66, to sprocket 66, which in .turn transmits power through chain 70 to the sprocket 68 and the'roller 49. The belt 53 will thus unwind with relation to roller 50 and will pass over the idlers 51 and 52 to the roller 49 upon which it is wound, the

sprocket 67 being loosely mounted on the shaft 64 will in this instance act as anidler and will otherwise be inactive as far as transmitting power is concerned, this being" of course true only when power is being transmitted to the roller 49. It the direction of rotation of the motor is reversed it should be obvious that pin 7 5 will immediately travel to the opposite end of the slot and thereby force the sleeve 72 longitudinally into engagement with the sprocket 66. Power will then be transmitted through shaft 64, pins 74 and 67 to the sprocket 66 and through chain 71 power will be transmitted to sprocket 69 and the roller 50 driven thereby. The direction of. travel of the belt 53 will thus be reversed and will wind itself about the roller 50 and will simultaneously unwind with relation to the roller 49.

The reversible motortogetherwith the automatic clutch indicated at 72 makes it possible to drive the belt in either direction. This is of great importance when the indicator is employed in street car service as it is necessary' to drive thebelt in one direction:

when the car is travelling in one direction and it will consequently be necessary to reverse the travel of the beltwhenrthe car is returning. The reversing of the motor is automatically accomplished by the mutiple switch controlling machine previously described and means have also been provided for automatically opening and closing the circuits of the motor to produce or transmit an intermittent drive throughthe belt 53 through whether this be travelling in one'directionor another. This is'accomplished in the. following manner: 1

By referringto Figs. 3 and 4, it can be seen that the names of the streets are printed or otherwise applied to the surface of the belt. Each street name is brought into reg, ister with the display opening or window 54, formed in the frontof the casing 55, and means have been provided for auto-' matically stopping the belt and motor the moment a street name is brought into register with said window. and. 81 indirate in general a pair oil-"switches. They are operated bvthe belt 53' through the following means: Each switch consists of a. pair of

springcontact members

82 and 83, and pivotally mounted on the main frame asv at 84 and 85 is a pair of

rocker arms

86 and 87, one for each switch. Suitably secured to the outer end of each lever arm is a roller. 88, and secured on the opposite edges of the belt area plurality of raisedbuttons or

projections

89 and 90, the projections 89 being so positioned as to engage withthe roller on arm 86, while 'the'proiections 90 will engage with the roller on the arm 87. There is one projection for each street and name, and these are staggered with relation toeach other, that is projection 89 which registers with M Street (see Fig. 3) is offset with relation to projection 90 on the opposite side of the belt, which registers with N Street, similarly projections 89 which registers with I Street is offset with relation to projection 90 which registers with Street, etc. a y

- The inner end of. each rocker arm is turned outwardly as indicated at 91 to bring the end of the rocker arm directly above the flexible springcoutact: members off the respective switches 80 and 81,- with which they are connected. The operation of this part of the mechanism will be as follows:

Motor 56 having been started will. trans init movement-to drivethebelt 53. The belt moving in a certain direction will consequentlybring one of the buttons or projections into engagement with roller 88 on'arm. 86, andwill'rock this on the pivot 84, cansing the outer end to movedownward in the direction of arrow 7), and force the fleirible 7 p contacts 82:and 83 of switch SO'into engagement witheach other, the buttons 90 on the oppositeside of the belt being oil'- set with relation to buttons 89, which are now in register with roller 88, will consequently permit arm 87 to remain in raised position and the contacts 82- and 83 or switch 81 will thus remain in normal or open position.

The switches 80 and 81 are automatically 7 openedor closedt-hrough means of the buttons or projections 89 and .90 and the

arms

86 and 87. These switches are connected goazsci in such a manner that they will alternately close a by-pass or shunting circuit around the armature which is automatically opened by the multiple switch controlling machine as will hereinafter be described, having reference to the wiring diagram shown in Fig.

4. This diagram illustrates the connections formed between the indicating machine and the multiple switch controlling machine and in fact illustrates the wiring or connection between two indicating machines, for instance, one at each endv of the street car and the multiple switch controlling machine. The circuits between the multiplerswitch controlling machine and the driving motor of either indicating machine are identical and the description of one series of circuits is therefore thought sufficient. 'Thesecircuits can be traced follows:

The automatic multiple switch cont-rolling machine controls six circuits, each of which is reversible, there being three separate circuits for each indicating machine. WV-e will first consider a closed circuit through one of the indicating machine driving motors. The motors employed, as previously described, are series wound. Current coming from the trolley line passesthrough a resistance 92, next through the field of the motor 56 and then passes through a wire which is connected with a contact F The current then passes through a segment 93 on the reversing drum, a bridge wire 94, a segment'95, contact A and then reaches one terminalof the armature as at A The current then passes upwardly through the terminal. A and wire A which is attached to acontact A; The current then passes through segment 93, bridge wire 94:, segment 95, and finally enters the rail or ground circuit through contact Gr. This indicates the closed or operating circuit formed through the motor. This circuit of course causes rotation of the armature and power is thereby'transmitted to move the street displayingbelt. This movement of the belt is however limited as the projections 89 or "90 on the belt are provided for by-passing or shunting the circuit around the armature' This circuit can be treated as follows:

Current from the trolley passes through the resistance 92, the armature field 56, and then passesthrough a wire which is connected with

contact F segments

93 and 95, bridge wire 94, and contact A Current then is shunted through a wire 97 andthe switch 80 of one of the indicating machines. The contacting points of said switch are connected by awire 98 with a. contact J which engages segment 99. The current passes through the segmentand contact K which is connected withone of the terminals ofthe master switch 33, by means of a wire 100 Current then passes through the ter;

minals or the master switch and wire 101, which is connected withthe contact; A The current then passes through the se cuts 93', 95 bridge wire 94:, and-contact I whichris connected with the rail or the ground. From this it can be seen that. the current is grounded without passing through the armature. i

It is-well known thatshunting or shortcircuiting of the armature of a motor, the fieldcircuit remaining excited, provides an instantaneous brake for said rotating armature. This is due to the fact that the rotating armature of any direct current motor generates a powerful counter electro-motive force. Shorting the armature sets up a powerful momentary field about the armaa ture which acts as a brake. This condition takes place in the present instance the moment the contacts of the switch are closed as abypass. or shunting circuit is. formed for the current. In other Words the current flow throughthe field still continuesbut all flow through the armature is interrupted due to the circuit of less resistance established by the switch 80. Instantaneous stoppage of the armature is therefore produced and similarly the movement ofthe display belt.

lVhile the current is shunted around the arshorting circuit through the contacts 37 on the master switch 33, adapted to-be; closed by switch 81. The moment the .master switch is thrown the current flowthrough the armature is again established and it is therefore obviousthat movement willgagain be transmitted to the belt by which the street names'are successively displayed. ."Further that the belt will continue movinguntil the projections thereon actuated switch 81, and

thereby completes the shunting circuit prepared by the master switch 33 when it engaged the contacts 37. Movement of the displaying belt will bring projections 90,

formed thereon, into position Where one or another of 'thesame will actuate the con tacts of the switch. 81 and close the circuit through the same. This second shunting being completed, instantaneous stoppage and further revolution of the motor is .c'aused. The second shunting circuit can be tracedas follows: f

Commencing with the trolley the current again'passes through the resistance 92,.the

motor field 56 and the wire which connects the same with thecontact F Thecurrent then passes throughsegment 93, .945,

which connects with the master switch terminals 37. The current then passes through the said terminals and out through wire 101,

which is connected with the contact A segment 93, bridge 94, contact 95, and contact G, which is connected with the rails or the ground. Theseare thev three main circuits and they are automatically actuated by the multiple switch controlling machine and also by the movement of the display belt in the indicating machine;

The function of the switches and 81 carried by the indicating machine and actuated by the projections on the display belt is to close the shunting circuits established by the master switch 33, and therefore causes instantaneous stoppage of the driving motor 56. The function of the multiple switch controlling machine is in realitythat of actuating the master switch 33, which prepares the two shunting circuits described or opens said circuits.

lVe have other functions to consider, that is the operation of the'reversing switch'or drum. This drum, as previously stated is automatically turned approximately onefourth of a revolution when the car reverses at one end, of a predetermined course or run. The functions of the reversing switch or drum is that of automatically reversing the circuits through the motors whereby the indicating machines are driven, that is the street displaying belt travels in one direction when the car is travelling in one direction and it is therefore necessary to reverse its direction of travel when the car returns or reverses its direction of travel. The function of the reversing switch or drum is therefore, first that of automatically reversing the circuits through the motors, and secondly that of reversing the shunting circuits which circuits in'turn are controlled by the belt actuated switches 80 and 81, and thedoubl master switches It also serves another function hereinafter tobe described. iVhen the drum assumes a position opposite to that shown in Fig. 7, it'will be seen that when the motor again continues its rotation, the flow through the armature will be in the opposite direction and that the direction of rotation will therefore be reversed. This circuit can be traced as follows:

Current entering from the trolley passes through the resistance 92, the field coil on the motor 56, and the wire which connects the'same with the contact F The current then passes through a segm ent 110 and out through contact A and it then passes through wire A and enters the terminal A on 'the armature, passing out through the oppos'lte terminal A itenters contact A which engages "a segment "111. "It then passes armature of 'the' motor.

throughthis segment and out through contact G which is connected with the ground By tracing the shunting circuits as shown. through wire 97 it will be seen that the current flowing through these is also reversed. The cycle of operation in each instance will therefore be similar to those previously described the only difference being that the current flow is reversed. v

The main actuating drum carrying the helix is not provided with pins at terminal nor at intermediate return points and means .must therefore necessarily be provided for imparting movement to the street displaying belts'so that the proper street named may be displayed. The reversing switch is em ployed for this purpose and in such instances only serves one of the functions of the master switch, to-wit, that of opening the shunting circuits.

By referring to Fig. 7 it will be seen that the contacts K and'J engage the contact- 99 when the reversing switch assumes one posi- "flow through the contactsK and J? will therefore be momentarily interrupted while the switch is changing position. tacts K andJ control'the shunting circuit around the armature "and as this circuit is momentarilybroken during the movement of the switch, it is obvious that the current is temporarily permitted to flow through the This is therefore started and movement is simultaneously transmitted to the display belt in the indicating machine, themovement imparted being sufficient to'move the, projections formed thereon out of engagement with the switch 80. The shunting circuit which was'fir'st momentarily opened is thereby permanently opened and it will remain open until the belt has travelled to display the proper street, and it will here be stopped due to the fact that the opposite projection 89 on the belt will now engage the contacts on the switch 81 and thereby close the shunting circuit in a normal manner. The reversing switch'will in thismanner perform one-of the functions of the masterswitch or perform the same function as thatof the pins on the helix and as no pins are provided at terminal or'inter seen that the automatic multiple switch'con trolling machine controls six circuits, three for each indicating-machine and that the current flow through these circuits is re versed when the position of the reversing switch drum is changed further the switches The con- By referring to the same carried by the respective indicating machines. and actuated bytheprojeetions on the respective belts serve the'function of com pleting the shunting circuits established by the master switches anc 3.3, and that the function of the automatic multiple switch controlling machine-is in reallty that of po- 7 sitioning saidimaster' switches so. that they either prepare the shunting circuits or open the; same, said multiple switch controlling machine having still another function, towit, that of automatlcallyreversing all circuits whenthe end'of a run s reached, and

that of functioningas; a masterswit ch at termmal'or intermediate return points.

The -multiple' switch controlling machine really covers thc subject matter of the pres ent invention, but as its operationto a certain extent is-Idependent-upon the switches a multiple switch controlling machine, an

indicating machine, an electric motor for driving the same, means actuated by the multiple switch controlling machine for preparinga shunt circuit around the armature of the motor and for opening said circuit.

3. In a device of the character described a multiple switch controlling machine, an indicating machine, an electric motor for driving the same, means actuated by the multiple switch controlling machine for preparing a shunt circuit around the armature of the motor, and means on the indicating machine for closing said shunt circuit.

4. In a device of the character described a multiple switch controlling machine, an indicating machine, an electric'motor for driving the same, means actuated by the multiple'switch controlling machine for preparing a shunt circuit around the armature of the motor, means on the indicating machine for closing said shunt circuit, and means actuated by the multiple switch controlling machine for openingsaid circuit.

5. In a device of the character described a multiple switch controlling machine, an

indicating machine, an electric motor for driving the same, means actuated by the multiple switch controlling machine for preparing a shunt circuit around the armature of the motor, means on the indicating machine for-closing said shunt circuit, means actuated by the multiple switch controlling machine for opening said circuit, and other means actuated by the multiple switch controlling machine for; reversing said circuit;-

"6; In a device of the charactergdescribed multiple switch. controlling machine, I an indicating machine,fanelectric-motor for -cli'iv'ing'- thesame, means actuated by'the multiple switch controlling machine for preparing a shunt circuit around thearma-.

turezof the motor, means on the indicating machine for closing "said shunt circuit, means actuated the multiple switch controlling machiiiewfor opening said circuit, a reversing switch automatically operated by the multiple switch controlling machine, and means on said'switch for opening the shunt circuit. I v r 7 "Inadeviceo-f the character described a multiple switch-controlling 'machine', an.

indicating machine, an electric motor for driving theesame, a master switclrin the controlling machine, an automatically actuated -switch'in the indicating machine adapt edto icloseashunt circuit around-the armature of-the motor, and means actuated'by'the multiple switch controlling machine "for automatically changing the position of the n l-aster switch toopen said shunting circuit; Y 18 111, a device: of thecharact'er described a multiple -switch controlling machine,*- an indicating machine an electric motor for driving; thelsame," a master switch in the controlling machine, an automatically actuated switch in the indicating machine adapted to close a shunt circuit around the armature of the motor, and means actuated I by the multiple switch controlling machine for automatically changing the position of the master switch to open said shunting circuit and simultaneously prepare a second shunting circuit. 1

9. In a device of the character described a multiple switch controlling machine, an indicating machine, an electric motor for driving the same, a double throw'switch in the controlling machine adapted to open and also adapted toprepare a shunting circuit around the armature of the motor, and an automatically actuated switch on the indicating machine adapted to close the shunting circuit prepared by the double throw switch.

10. In a device of the character described a multiple switch controlling machine, an indicating machine, an electric motor for driving the same, av double throw switch in the controlling machine adapted to open and alsoadapted to prepare a shunting circuit around the armature'of the motor, an automatically actuated switch on the indicating its machine adapted-to reverse the current flow through the motor and also through the ing machine adapted to close'the shunting circuit preparedby-the double throw switch, and a reversing switch in the controlling machine adapted to reverse the current flow throught the motor and also through the shunting circuit, said reversing switch, when changing position, also adapted to open the shunting circuit.

'12. In a device of the character described a. multiple switch controlling machine, an indicating machine, an electric motor for driving the same, a shunt circuit formed around the armature ofthemotor, a double throw master switch in the controlling machine adapted to open the shunting. circuit and also adapted to prepare theshunting circuit around the armature power driven means adapted to intermittently change the position of the master switch, an automatically actuated switch inv the indicatingmachine adapted to close the shunting circuit prepared by theamasterswitch, a reversing switch in the controllingrmachine, and means actuated by power driven means for automatically changing the posi- 7 tion of the reversing switch and thereby reverse the current flow through the armature of the motor. r

l3. In a device of the character described amultiple switch. controlling machine, an indicating machine, an electric motor for driving thesame, a shunt circuit formed 5 prepared by the master switch, and asecond automaticallyactuated switch in the indicating machine adapted to close the next shunting circuit prepared by the 'master switch and said master switch automatically opening the shunting circuits closed by the indicating machine. switches.

In testimony whereof we have-hereunto set our hands in the ing witnesses.

' EVERETT AQMA'RGESON. CHARLES DAVID HERROLD.

. WVitnesses: r

E. LENNON, MILDRED AnJo.

presence of two subscrib-