US1076481A - Electromagnetic device. - Google Patents

Description

S. C. BRYANT. BLEGTROMAGNBTIG DEVICE. APPLIATIQN FILED MAY 29, 1912.

Patented l Oct. 21, 1913.

ururrno STATES PATENT orales.

STANLEY C. BRYANT, OF CHICAGO, ILLINOIS, ASSIGNOR TOBRYANT ZINC COMPNY,

` 0F CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

ELEGTRMAGNETIC DEVICE.

incensi.

Speoination of Letters Patent.

Patented Oct. 21, 1913.

To all whom t may concern:

Be it known that I, STANLEY C. BRYANT, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented a new end usetul Electromagnetic Device, of which the following is a specification.

`This invention relates to an electro-magnetic device, particularly to a device known as a bell of the locomotive type.

The primary object of this invention is to provide a means for minimizing the liability of the electro-magnetic device to become inoperative, by reason of an open circuit at the reciprocating circuit controller, usually employed with such a device when 4used in the operation of bells.

Other objects and advantages will appear asthe description of the invention progresses, and the novel fea-tures of the invention will be particularly pointed out in the appended claims.

In describing the invention in detail, reference is had to the accompanying drawings,.wherein I have illustrated a preferred physical embodiment of my invention, and whereinlike characters of reference designate corresponding parts throughout the several views, and in whichq Figure 1- .is a front elevation of the form of bell and associated mechanism selected 4by applicant to illustrate his invention; Fig. 2, is a side elevation of the mechanism and bell shown by Fig. 1, with some parts broken away, and an electro-magnet coil and its connections removed; Fig. 3, is a schematic view showing a circuit arrangement for controlling the mechanism shown by Figs. 1 and2. l i

. 1 designates a gong, of the locomotive bell type, vfastened by meansof the bolt 2 to the upper end of a curved standard- 3,

which is fastened at its two ends, by means of bolts 4, to a supporting base 5. The curved standard 3 supports, at its upper end, the pin 6, which isrigidly vattached to the standard at either end as best shown in Fig. 1, so that it cannot rotate.v Upon the pin 6 a two arm lever 7 is pivoted, having at one end the hammer 43, and being connectedy at the other end, by means of a pin 9, with a member 10. The two armflever 7 is prevented from moving longitudinally of `v The cores 27 pin 6, byy being placed between two collars 11, both of which are fastened rigidly by means of pins 12 to the pin 6. A rod 13 passes 4through a hole in the lower end of member 10 and bears a collar 14 at its upper end, so that the rod 13 cannot become detached from the member 10, thus forming a slidable. connection with the 'member'. 10. The rod 13 is attached by means of pin 15 to the cross bar 16, land is .long enough to be inserted in a hole 17 in the base 5, which will serve to guide the .rod 13. The rod bears the adjust-able collars 18, 19 and 20; the c'ollar 18 being adapt-- netic attraction of cores 30, also best shown in Fi 1. The cores l3() have brass pins 31 inserte therein to prevent cores 28 and 30 from actually coming into contact. one: with the` other and, consequently, being-held together by residual magnetism.l 4'jlEhe cores 127, ,2 8` and 30 are surrounded by coils of' insulatedl wire 32 and 33, which, when'a current ofy electricity flows therethrough, cause a magnetic iiuxto iiow in the cores and through the magnetic yoke 34 which is attached to .the bottom4 of the cores k30 by means of screws 35. When a magnetic' iux Hows in the path above described, the cores 27 and 28 are drawn downwardly.

Two standards, 36 and 37, are attached to the base 5 by means of screws 38 and 'are attached, one to the other, byv means of cross piece 39, which is attached to each at y the end of an outstanding arm 40, by means of rivet'41. An outstanding arm 42, on each of the standards, forms va support for pivot pin 23. Screws 43 pass `through the upper ends-of the standards 36 and 37 and into the ends vof a magnetic core having the pole pieces 44. The core, having the pole pieces 44, supports the coil vof insulated wlre 45. armature 46, which, when lin the position The two armed lever 22 supports an W11? end 59 n springarm 61, 'WhiChJiS-SuppOrted' by cross The spring armvv center throwing device,- that fis, .when -T` l crank has been moved `30 60 just 'passes the shown in Figs- 1 and2, rests 'upon t f a-rds 49:

tion therebetween. j

as shown in 2, is; out of range of the magnetic attraction ofv the pole pieces L14,.-

thereto, by means-of rivetfl?, the' contact 4.8,-wliich, when in the." position as Standards-49 and 4"in placel` The stan ards inthp'sitionof. springs 53 and 54. he rank '25.'has an upper arm 57, "the 'grooved upper surfacevv 58 which a roller 60, `borne byja piecef39fis adapted to bear." j 6 1,a c t `ing through the roller l 60,.causes the T crank25 to assume either one of two positiohs.; wi th the roller bearing on' the lowest part ofthe groovedsurface 58'or'the'roller '25- surface 59.

bearing on thelowe'st Dart-of the grooved The spring arm l61, acting through the roller- 60, also acts as an overfrom the ,position shown in Fig. 2,. tofa position'where roller ri e 62, th 61, acting through, the roller I novement,*ls/.0* that 'theroller "60 can bear upon the lewestportion of grooved surface 59.4 The vT-'crank25 bearsa metallic conduchi. .g1 member.-

positio l63, "which,

' and`54f-but Iwhen in the otherf position,

;thQ. .T

crank may assum, with the i grnemberffin the dotted line;l position as showninfFig. .'2, .does -notmake electrical connection between springs 53'and 541Cl :Binding post 64 is connected, by. means Q fwire l65,-"wi'tl1 one end of coil 33 the Vother-'-endi lof coil 33 beingv connected by means of wire 70.

nected to binding lmeans. of.. wire 66 with bindingpost 52.

Binding post' 51is connected,.bymeans of .Wire 67, with one end 'of-'coil 32; `the other end of' coil 32'being connected with binding post68, bysme'ans offwire 71. 4One-end of coil 45' isconnected lbymeahs of wire 69;

the other-end of coil 45Jis connected with binding post 68, by

the source. The current nowin'gin the above cause'hammer 8 to strike the go wo standl and 50andf make's'metallic connec?.

" 61,"actingthrough the .roller 60,

v caused rmember 63 with. springs 53 and 54 to thejdotted line75 position 'as vshown-in F ig. 2,.thus" breaking` .fwlshalso' .S-rre'toclam the upon: the base". 5.and areattachedthereto, by fmeanslof the-` bolts 51 and- 52, which serve asbindingposts crews 55 `-and 56 for adjustespring armv 60, 'causes theV T' crank to move quickly tothe limit lof itswith binding post 64,

parts as shown in Figs.-

path: binding4 'post 64, wire 65, coil 33wire 66,l bindingv connected 'to binding posts current may How las follsss-f-fbinding post 130 traced A'pathwouldcausev cores 27 and 28 to vdrawn downwardly, thereby, causing rody 13.'.to .bedrawn downwardly, hich would g 1, but just before the hammer 8 struck the collar'19, acting through the arm 24 of the Tera-nk 25, and assisted bv the spring arm would have to move from in .contact the circuit heretofore traced, and consequently, allowing the hammer 8 by reason of its weight to fall back into the p osition as shown in Fig, 2. Just before Y had reached its final position of rest, as shown' in Fig. 2, the sleeve 20, l acting through the arm 24 of thevT crank 25, and assisted by spring' arm 61, acting'through the roller-60, would have between springs 53 and "54, which, of course, would again cause the cores 27 'and 28 to be 'drawn downwardly,.so that just so long as -thebindin'g posts 64vand 68 were connected 9 0 with a source of electrical energy/ fthe gong 'l would be continually struck-by the ham- .mer.8.

' The type of tendieren illustrates is particularly adapted, for what is known as 95' highway-crossing signals, which are. used to `notify pedestrians and others ofthe appioachI of 'atrain .to a Ahighway crossing. .When used for such'purposes it may remain idle for a exposed to the weather as it must needs be,

yalthough protected as carefully as possible,

:a strong wind isliable to shake the standard upon-'which the bell. mechanism is placed, so' violently, thatthe hammer 8 is'caused to 105 oscillate and'thereby' cause the `rod 13 and the arm 24to bemoved and-it 'is very possible-that the member. 63 will'beleft in the dotted line position asshown'in Fi; 2. .In

casemember 63 were Ileft inthe dol-:ated liney 110 position as shown 'in Fig. 2, then a subsequent application of electricenergy to the z binding posts 6.4 and 68 wouldnot cause' currentyto ilow to c oils 32. and $3 inthe path` above traced, consequently, ing ofv gong '1. would take plac'exV` The device herein illustrated vsigned vfor use as a safety/'device ways must, in order to secure eingfv de,.- pon frailfavorable attention, befso designed that any oppor- 120 tunity for a failure to 'oper'atemust be en tilely removed.

vApplicanthas pro'i'del a means for pref 'iie'bell to operate yunder outlined'. Its mode 125 .'o f operation isl-.as follows: If member63 venting a failure of the conditions above.

remains in .the dotted line posit-ion 4as shown inf-Fig.vv 2,' then when electrical energy is..

6l.. and GS-the gong 1, the

the hammer causedlthe member 3 5 -63 to again form an 'electrical connectionl great length of'time and being 10o y,no sounda light and the ringing wie@ cadence, wire ce, tuning pest' b2, stendardf'),bridging member/i8; sfteird lard-50, binding post l, wire 67, coil32;'Wire ,H i. l, c

.i i, and binding post (.itothe otherterininal oit the source. lt will be .seenfthet the {p1-31thy nected :from binding posts 6&1 and 68.- lire path is' not 'Iclosed constantly, lmwever, form .upon the downward movementoi" rod 13, the sleeife 18 contacts with the. end 2l oit two armed lever 22 and raises bridging member i8 from in Contact with standards i9 and thus breaking the connection heretofore traced and by raising; hrm 46, brings it within the range of influence of coil 45; which thereupon holds the armature lo andthe bridging member i8 in the rest position until the source ot energy is disconnected Jfrom "l inding posts fri and 68 when the armature le end bridging" meinbcr i8, by reason of grzir'ity; fall to the position as shown in the figures. lt will thus be seen that if by any chance the member should be lett in the dotted line position7 es shown in llig. 2, with the hammer 8 in the position shown in Fig. 2; an application oi' energyto bind-- ing posts 84; und GS Ywould cause beininer 8 to be raised motive biglie ey crossing bell; il i'e member G3 gets out ol" step 'with the Iro( the bell becomes ii'iopieretive, but in. at sentis type of bell il the member 63 gets out est with the rod 13, it is possible, as hss hereto vfore been shown, to start the bell ringing. rlhis is an extremely Valuable Vfeature, t'or many lrighwey crossing bells are locatedin rural. districts; far removed from 'the head quarters cip-the maintainer who has charge of such bells, so that if a bell becomes inoperative, for any .reason7 it will gei'ierally'be severalv days before the maintainer can get to the bell and remedy the ditiiciil"cyu A bell of applicnnts type, however, is practically selit maintained.

.Although applicant has herein shown his invention as applied to a mechanism for causing a haininer to strike a gong., it is not to be understood that such is the only use which may be made of applicfints invention for by 'those skilled the art it will be readily seen that the principle underlyingapplicants invention is just as applicable to the mechanism for causing the :dashing ci a light as is now commonly done in highway crossing,l signals, or for both the flashing of of a bell. The einH ployinent of the apparatus for such double purpose merely requiring the addition of a contacting means to cooperate with member 63 us is Well understood.

Although applicant has shown his shuntl breaks i 'in electrical yart Vwell, understand; tiret, one,

' cuit controller governed by said n lin the ordinary tyco of loco-l 'circuit from Iniernber esxbeing .brolenfjatf two ple-cee; it is of .course Ato c beunderstoefl i that it c not .at alli-necessary te, malte twjo, the shunt circuit; ,es those; skilled;

breel' e suiicient orthepurposef. .Although appl has shown the circuit lier the electro-magnets 32 asbeing broken at, two springs 53 e ot; it Well "understood byth'ose .skilled n the art that it is not all necessary to'here two breaks in the cir-- cuit one will eccoinplishithe saine purpose. Although epplicmit has particularly described the construction of one physicalein bodilnent oli 'his invention, and 'explained the operation and principle thereof; neyerthe less, applicant desires to'heve' it understood that the 'form selected ismerelyillustrative, but does not exhziust the possible physical embodiments ol? the idea of rneans'underly'- ingI his inventionn f W hat l claim es new and desire to secure by Letters Patent of the United States, is

L ln an ele troniagnetic device a source of electricity, en electro-magnet in circuit, with said source, a men'iber eperuble by said electromiagnet in one direction and operable by gravity in the opposite direction; n cir- 'anibe'r in circuit with said electro-magi and' said source, s circuit shouting said circuit con troller, ineens controlled by member to open 'said shunt circuit; means to r vuin said shunt cirov it open. l v

2. 'in elcetro-umg etic device; u source.

electricitfn an electro-nimmst in circuit with said source, a member operable by said electro-magnet in one'direction and operable by gratuity in opposite direction, a circuit controller f .lcd by said member in circuit with seid tro-magnet and said so" a circuit slinnting seid circuit ccntr ,lli 3 another circuit controller in said last mentionedcircuit, said member adapted to open said last mentioned' circuit controller, and means energized from 'the sour/ce to retain said last mentioned circuit controller open. c t i 3. ln en electro-magnetic device: source of electricity; an Ielectro-1neignet in circuit with said source; e member operable by said electroniagnet in one direction end operable by gravity' in the opposite direction; a circuit controller governed by said member in circuit with said electro-magnet and said source; a circuit sbunting' said circuit controller; another circuit controller in. seid last ientioned circuit; pircted member bearing an yarmature by' which said other circuit controller controlled;` said first mentioned member adapted to Contact said pivoted member when operated by seid electro-meg netand break seid shunt circuit; second electro-magnet energized :trom said source

Images