US1423907A - Electric controlling apparatus - Google Patents

Description

F. H. BULLlNGER. ELECTRIC CONTROLLING APPARATUS. K

APPLlcArv'oN man Amma. 1911. 1,423,907, PatentdJuly 25, 1922.

2 sun-:nhen

F.YH. BULLINGER.

ELECTRIC CNTROLLING APPARATUS. APPLlATIoN FILED AuG.18. 1917.

1,423,907, Patented July 25, 1922.

2 SHEETS-SHEET 2.

7:51a 14,4 attotnels ELECTRIC COMPANY7` A, coEPoEAfrroN 0E NEW rome'.

ELEc'ruc coirTEoEE'rne AEPAEATES.

: y uw .i.i t:T ,Specification of Letters Patent. Igttnted J 1y 25, 1922,

To allfmliomnmy com/em. y I t r Beit .knownthatlv FEEDERIAC BELLIN- Gnme, citizen of the United Sttes, residing :it Yonkers, in the coglinty vof lest'chefster @ind Stteof 'New York,y have `invented certin nen?` Lind useful .,lrniroyenientsf in Elecn tric Controllingpparztts, of which the following' is alspecilication. f n n f The principtl object of wylinyention to` provide new Vsind improvedepperntns toi' controlling the electriccurreiit delivered by. t Avariable 's iueed generator. VOthenohjects oi' my invention. have .to with proridingA improyed Ineens for mounting the controller in sirena. ksystem `of electric` control; yalso 4for nioiinting resistance, unity vcontroller; also 'lor a`sseinl-lingifr the `con,.- ti'oller `and its cover end seciiiing7 thein in desired relation; my invention also inyolyes iniv improved circiiit controlling n armature c{onstincxtinnl irnprojfe'd means for ad'n jiistiiig the storing tension lon such liinerme; ture. All these objects zuid otlieiswill be miide tppai'ent in the i'ollowingf specilication nid cla-hns`l tnylien in connection with the ac"- Ceiniwntne @Hermes in, which 0.11 specifi@ embodiment of ,inydniention ,is illnstrated. The invention is deined in the appended claiinsm u e n, K

Refering" these'drziwings, Fig." 1 yis e side eleyation showing inyzimproyed controller inouiited on d d'ynarnoelectric gen; erator; Fig.A 2 a, cross section vof .the sinne met mi it@ `11119.12 eifrig'. i ieiefigin the direction of the iirow Fig. 3 is section ojf the controller bsetaken on theplinef of Fig. 4; looking in the dii'eetion of tlie'irrow;

i is` a toi) plan nien? ofthe controllerl withoiit the cover; Figg is` a Vertice iiiial section `of the controller ,Without itsb-se, teken on the line' 501i Fig. i lookingfin the directionotthe i1-row; Fig. 6 ,is a perspective View of a c'ontict, carrying. rinatiire: F ig, 7 is a perspectiyeyiew of the Inin inrgnetic riineof the controller; Fig. 8 is i 'friignients'iiy `cross section ony he line 8 in Fig.' looking* inthe direction orthe iirow; 9 perspective viewoi" im .adjustable stonkfr 1'regiilzitting theuspringtension on one of the contact carrying armatures;k Fig. inv is et @levende @jf the etnie .adjustable stop; llfise perspectivezyiew of one of the terninellslipports for the controller;

l2 is a siinpliiedl xyiringdiegrnin, Fig'. 13 is a detail sectiononthe line 18 of In the embodiment of invention :which is illustrated inthe drawing'gl have shown the casingl 2l for it dynamo electric gener vantonsuch es' may bemounted;onwanentoinobile and dritten by the automobile engine for charging ,ii storage batteryend fnrnjishling" electric current for varions pnrposes.

Upon this generaltoryczts'ingir 2l inthe seine horizontal pla-ne, Kbnl; notl in; the serpe straight line yarey three generator. yterminals 22, 23,'zind 24, of which the terminalv 22 is condnctiyelyconnected to the. generator `tii'ernel y21;y but A the other twog terminls y2,3 and.. :1re in snlarted therefrom as -shown in Fig.V v2.". "lhe terniinzil .is connectedto the generator; iieldnfinding and the terminal 24C `is connected vto \the"ermeture Winding, ill indicated diagrrnmatically in These .three'terininls 2i also servens supports for the regulnatoryvbese 25, which is in iice of suitableinsnlatinginaterial. .Tliis bese 251lms three terminals 26n 2'? sind 2f; secured iirinly inwijecesseson its underside and projecting.thereifroin as shown in 3 ande. The vterminal 26 as an eX- "an'iiple iS fshoivn in perspective Figli.

The terminal 281s: .fainilglr britl the terminal QT is specillyv constructed and isshovnnin longitudinal section in It is con,n `dfuctively connected by the screyv ,lOyt-o the regulator frame member44-` andjurther semiredr to` the b se 25 by the tnbnlztr rivet 31, w'x'fhicl'i `is'hendeddown in the recess yA'. cliznnber S3 is runde in the underside ofy the bese I25 zindthe extensionlof the terminal 127 lies Vicross this chamber On the extension 34k. is mounted .the tubular enitrneled resistiince unit `one terrrninalof VWhiclji 37, soldered the end oit the extensionrfl'et .The attachment 36 not only 4rnakesI a conductiverconnection but servesto Aretain the resistance nnit 35 on the extension afrrnli.l`4 n', u 'M rectangular box likewcover 38 is provided for uthe controller, `withuperfomtionsvin 41 on side. VA .bottorn' sheet metal, plate has tn/o opposite ears i2-.edatpted to enter the respective holes 4l. The ears 42 lie in notches 29 in the edges. ofthe insulating bSe 25. Above the bottoni plate 39 is a sheet of insulating material 40, with notches at 40'., to be engaged by the ears l2 so as to hold the parts in proper relation. Lead seals 43 through perforations in the ends of the ears 42 hold the parts in assembled relation as shown in Fig. 8.

The main magnetic frame lll is shown in perspective in F ig. 7. The magnetic circuit is further completed by the bridging piece 45. The magnetic core L.t6 has a head at one end and is secured by a cotter pin 50 at the other end. There are two windings on the core 4.6, an inner fine wire winding 65 and an outer coarse wire winding 66 retained at the ends by the brass plates 4:7 and 48.

At each end there is a contact carrying movable armature designated generally in Fig. l2 by the reference numerals 67 and 68. These are very nearly alike, so that a detailed d escription will be given only for the armature 68. It consists of a magnetically permeable main part 51, combined with a piece of spring sheet bronze, attached at 52 by the bent over lugs 52. This sheet oit bronze is extended at 54tand fastened under the clip 61 so that the intermediate part 53 serves as a flexible hinge support Yfor the armature 51. An extension serves as a spring tending to retract the armature 51 from the core 46. Another extension 56 has projections 56 and 56 adapted to act as stops relatively to the free end of the armature 51. This extension 56 carries a contact making button 57. The coacting stationary contact button 58 is mounted on Ythe bracket 59 secured .to the base 25 by the screw 60.

The clip 6l, is shown in perspective in Fig. 9 and in elevation in Fig. 10. lt has a projecting tongue 63, which is thinner than its base part 62, and with the intermediate part 64- bent in an elbow and pressing against the spring This clip 61vwith its tongue 63 is made of suitable metal for bending. so that by this means the tension of the spring' 55 can be adjusted, as will be more fully explained later.

The circuit connections are shown in F ig. 12 where the corresponding elements are in'- dieated by the same reference numerals as in the earlier Figures of the drawings. Referring to Fig. 12. when the generator 69 is at rest or running very slowly, the spring tension o n the armatures 67 and 66 will hold them in the positions shown in the diagram; but with increasing speed. the current through the shunt coil 65 will create a magnetic attraction that will' first draw the armature 68 against the contact 58. whereupon a circuit will be completed, from the generator 69 to the battery 70 and lamps 71 in parallel. and the current flowing through the series coil 66 will add to the attraction produced by the shunt coil 65 and hold the armature 68 securely against the contact 58. The increased magnetic attraction due to. the two coils 65 and 66 acting conjointly will draw the armature 67 away from its contact 67 thus throwing` the resistance 35 in series with the generator field winding 72 and weakenn ing the lield. This weakening of the field will cut down the current delivered by the generator 69 so that the combined attraction of the coil 65 and 66 will be insullicient to hold the armature 67 against the stop 725 and the armature 67 will fall back against the contact 67', cutting out the resistance and permittingr an increase of current through the field winding 72, whereupon thc same cycle of operation of the armature 67 will be repeated and so on in succession. All the time the armature 66 will he closed against the contact 58. Thus th c current delivered to the battery 70 from the generator 69 will be pulsatory. rising when the armature 67 is closed against the contact 67. and falling when open. lVhen the speed of' the generator 69 dies down. the current through the coils 65 and` 66 will decrease until the armature 68 will open against its stop 66 thus cutting otlvl the battery 70 from. the generator 69. lit the battery 76 should start to discharge back through. the generator. the reverse flow of current through the coil 66 would hasten this action by opposing and killing the effect of the current in the shunt coil 65. l

The terminals Q6. 27 and 28 are stamped of sheet metal and hence are inexpensive to manu facture. less expensive than turned and machined contact blocks would be. These terminals 26, 27 and 28 have a certain amount of flexibility. so that they prevent stressing the insulating base 25 in mounting it upon the generator iframe 21, They are resilient so that they arlord a yielding sul port for the regiilator on its base Q5, thus the regulator will he protected from the iars and vibrations that would otherwise be communicated to it from the lgenerator on which it supported'.

The single piece of spring sheet bronze has the following functions: (l) lt serves to give the `flexible hinge support at 53 for the armature 51, (2) the portion acts as a retraetile spring and cooperates with the tongue 6ft for adpistment. (il) the portion 56 carries the contact button 57 and the stops 56 and 56 permit a slight relative displacement of the button 57. but this displacement is definitely limited in extent; the effect is to break the contacts at 57. 56 with an abrupt hammer blow. AUso the relative movement of the button 57 causes .a slight rubbing of the contacts 57 and 5R so that they are kept bright and in good condition. The armature 67 is similar to 68, except that it closes on the back contact 67, and therefore no special detailed description need be given, except that the spring for the @rma-tere 6 7 Wider and` stiffer than for umane 'the armatutref and thatthey are adjusted somewhat diffeientlv. "as will be "described later. e

Thespring 55 for the vcutout y68 lisdesigned so `-that its tension is nearly constant and vhence 'the increased magnetic *pull duetot'he approach of the armature to the core serves to hold 'the cutout firmlyelosed after initial closure, in spite of any jarring to which the apparatus may be subjected. On 'th'e other hand, the spring for the vibrator 67 is made so that as 'the armature approache'sthe core, the tension `of this 'spring in opposition to the magnetic pull. increases nearly, but not quite much as the magnetic pull. Hence after closure the vibrator will open 'readily upon :t moderate drop in the 'arrilpere turns Yfrom the value that 'ii/'as sufficient to cause its closure. y

The baclestop 68 and the froiitistep 73 for the respective armatures 68 and 67 "are adjustable in position by bending `With pliers. Thus the range of movement f the armatures may be determined. This adj ust- 'ment is 1'i'iade'after assembling, and at the same time each ofthe metal tongues 624463 f is adjusted by bending Se as to determine the tension of the respective 'springs 55 for the 'armatiires 67 and 68. By bending vthe tongue 62-63 at its ro'o't, 'Where it j'oins on the main attaching part '61: the effect lon the spring is considerable, but a. finer adjustment is securedby bending the tip Because of the taper of the tongue 62;63, this bending of the tipe?) produces n50 'change in the part 62 and only a 'slight change at the knee 64.. Once adjusted-,the tongue 62;

is permanent, and will not get Vloose as might be the 'case ivith aset screw. The "construction is inexpensive, for the member 61 is easilystamped from sheet metals- Once adjusted at the factory, these regulators Will not ordinarily require' any readjustment, 'on nccdunt of the permanence ofthe initial adjustment by bending of the tnngues 62563.

The part 54C of the bronze piece 52755 is clamped to the frame member 44 between the two plates 6i and Slby vmeans'of the screws S2 passing through reg'st'erifi' heles. The holes v8G in the member 52-55 are elongated ivith their maj or axes parallel and transverse to the hinge airis at In assembling the device, the parts aire assembled with the screws 82 loosely inplace andthe piece is moved until the buttons 57 and 58 a re brought in registry: This move ment may be translatory or rotatory as facil mated by me @laughed nales se When the buttons 57 and 58 are in registry. the screws 82 are tightened permanently. Then a small punch is driven through they registering holes 85 and 83 in the plates 6l and 8l; this punches the bronze through to form a boss as shown at 84 in Figure 13, and thus a definite permanent registering adjustment of the 'buttens 5r and `58"is secured. This hdjustment for pos'itioir "of vthe bronze pieee 55 is inafde before the yadjustinent for spring tension "by bending tongue 62;(53, 'heretofore described.

The chamber 33 is continuous with 'the re- "ces's '33', 'thus for'n'iin'g a passage 'entending all the ivay through Afrom end to end of the `b'a'se Q5', 4'so that the heat generated by the resistance 'unit 35 and communicated t the surrounding air is rapidlyremoved by ventilation 'through the passage 33-33.

Having thuis described my invention, I declare that what I claim as new and desire to secure by Letters Patent, is

l. In a circuit controller armature, :a `1per 'ifnea'bl'e member, and a sheet metal member fastened theret'v at a middle portion of said sheet metal member and `having one portion disposed to serve as a hinge support, one 'end .portion to fcarry a contact button and the' 'other end portion to serve as a retractile spring. y i

2; lIn a circuit 'controlling armature, 'a permeable member, and a sheet metal memw ber fastened thereto and having Aone portion disposed to serve as 'a hinge support, and an end portion bent over outside said permeable member and having its end engage said permeable member to serve as a retractile spring. l i

Tn a circuit controlling armature, a permeable member. and a sheetV metal me1nbei' fastened thereto at a middleportion of `"said .sheet metalmemberand having` one end portion disposed tok carry "a contact button, and the other end portion to serve as a retractile spring., l

4. In a circuit contrlling armature, a permeable member with an extension at one side, a resilient sheet metal member fastened to the permeable member and havingan exten` sion adjahent to thc first mentioned extension and carrying` a 'contact button, these two Vextensions having interengaging stops whereby the button may be moved `over a 'deli-nite limited range relatively to the pen meable member, said sheet metal member' having another extension on its dpposit'e side adapted to be` fastened to a ixedsupport and thus affordv ahinge lconnection thereto` for the permeable member and being further extended and "bent around the permeable' member and engaging the same to act as a retractille spring therefor.

5;. In4 a circuit controlling armattire, a permeable member With an extension at ene sid-e; a resilientshcet metal member fastened to the permeable member and having an extension fastened to a fixed support thus affording a hinge connection thereto for the permeable member, and a further extension bent around the permeable member and engaging the same to act as a retractile spring therefor.

6. In a circuit controlling armature, a permeable member with an extension at one side, a resilient sheet metal member fastened to the permeable member and having an extension adjacent to the first mentioned extension and carrying a contact button, these two extensions having interengaging stops whereby the button may be moved over a definite limited range relatively to the permeable member, said sheet metal member having another extension on its opposite side adapted to be fastened to a fixed support and thus a'fii'ord a hinge connection thereto for the permeable member.

T. In combination, a contact carrying movable armature, a retractile leaf spring therefor, and a stationary elem-ent having a projection bearing against said spring, said projection being bendable to adjust the tension of said spring.

8. In. combination, a contact carrying armature, a support to which said armature has a hinge connection, a leaf spring fixed on said support and extending therefrom with its end engaging said armature, and a tongue iixed at its root on said support and engaging said spring, said tongue being adapted to be bent to adjust the tension of the spring.

9. In combination, a contact carrying armature, a support to which said armature has a hinge connection, a leaf spring fixed on said support and extending therefrom with its end engaging said. armature, and a tongue fixed at its root on said support and extending therefrom with an intermediate bend, said bend lying against said spring and said tongue being adapted to have said bend modified to adjust the'. tension of the spring.

1,0. In combination, a contact carrying armature, a support, a leaf spring fixed on said support at one part thereof and engaging said armature at another part, a metal tongue fixed at its root to the support and with its intermediate part bent and lying against an intermediate part of said spring, said. tongue being thinner at its tip and adapted to be bent at various points along its length so as to adjust the tension of the spring to any desirable degree.

ll. In combination, a Contact carrying armature, a fixed contact to cooperate therewith., a sheet metal member fastened to the armature and extending therefrom to serve as a hinge support therefor, and having a hole in the extended portion, a screw passing with considerable clearance through said hole to facilitate adjustment of the armature for registering of the contacts, a fixed member engaged by said screw and a hole in said member with a boss projected therein. from the sheet metal member after said adjustment so as to secure permanency thereof.

l2. In combination, a contact carrying armature, a fixed Contact to cooperate therewith, a sheet metal member fastened te the armature and extending therefrom to serve as a hinge support therefor, a fixed member, means to clamp said sheet metal member thereto after the contacts have been brought in registry, said fixed member having' a recess adjacent to said sheet metal member, and said sheet metal member having a portion thereof bent into said recess after adjustment and clamping whereby proper permanent registry of' the contacts is assured.

13. In combination, a contact carrying armature, a fixed contact to cooperate therewith, a sheet metal member fastened to the armature and extending therefrom te serve as a hinge support therefor, and having ltwo holes each elongated transversely to the line joining said holes, a fixed support, two plates on respective sides of the extended portion of the sheetmetal member, screws to clamp said plates and said member between them to said fixed support after adjustment for registry of the contacts, said plates having two sets of registering holes therethrougl'i.

and the metal of said member being punched through at said holes after the parts have been clamped by said screws.

1.4i. In combination, a contact carrying armature, a fixed contact to cooperate therewith, a sheet metal member fastened to the armature and extending therefrom to serve as a hinge support therefor, a fixed member,y and means to clamp said sheet metal member thereto after the contacts have been brought in registry, said fixed member and. said sheet metal member having .means to be established after clamping to insure permanent registry of said. contacts l5. The method of assembling the contact carrying armature having a thin sheet metal member to serve as a hinge support, which consists in loosely securing said member, then adjusting the parts for registry of the contacts, then deforming the metal to secure permanence of registry and clamping the loose parts tightly together.

FREDERIC I-I. BULLINGER.

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