US1305380A

US1305380A - Safety

Info

Publication number: US1305380A
Authority: US
Publication date: 1919-06-03
Anticipated expiration: 1936-06-03

Description

W. S. LEVN.

AUTGMAUC RAIN SIGNAL AND STO?,

APPUCAUON mw MR2-1, |9`15-` j@ mmf UNTTED STATES PATENT oEEIoE.

WALTER S. LEVIN, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO THE NATIONAL SAFETY APPLIANCE COMPANY, OF SAN TIO'N OF CALIFORNIA.

FRANCISCO, CALIFORNIA, A COBPORA- AUTOMATIC TRAIN SIGNAL AND STOP.

Specification of Lettet atent.

Patented June 2, 191%).

To 117/ trimm if may concern.'

Bc it known that l, Kuren S. LEviN. a citizen ol the lluited States` and a resident of San Francisco. county ot Sau Francisco. State ot' California, have invented certain new and useful Improvements in Automatio Train Signals and Stops', of which the tollowingr is a. specification.

The objects ot the invention will fully appear to one skilled in the artr from the hercinatter description taken in connection with the accompanying drawings in which the sa me reference character indicates the same part in the. several views.

Figure. l of the drawing is a diagrammatic view of certain features ot the invention used in signalinff.

Fig. 2 is a diagrammatic view of the invention as used in signaling and train Stopping, certain ot the parts being;` shown 'in ditl'erent positions than shown in Fig. l.

Fig. 5% is a side elevation.y certain parts heing broken away` of' a track. the eab and part. ot' a locomotive and tender Showing the invention applied thereto.

Fig. -l is an elevation ot a casing mounted in the cal) of the engine, containing certain parts ot the. signaling and train stopping mechanism.

Fig. :'i is a top plan view ot certain parts of the apparatun viewed on line of Fig. 8.

Fig. (t is a sidef elevation partly in section of the train magnet.

Fig. 7 ia a cross section ofthe. same on line 7 ot Fig. 6.

On the. drawing the part marked A represents a' railway track or roadbed, B part of a locomotive, B the cab thereof, C the tenderl and C' a truck under the, tender. Signals are. transmitted tothe ab by means ot' a series of powerful electro-magnets l0 located longitudinally of the, track in staggered relation to each other between the rails. The means for controlling the operation of the magnet are not shown in detail hut the windings of the magnet are illustrated as connected by conducting Wires 11 and l2 to a battery 13 by which the, magnet is energized. ln the construction of this magnet, shown, the. ends1 of the core l0 extend 1beyond the winding;r or spool and are provided with the pole pieces l0", the upper ends.; ol' each ot' these` pole. pieces being wid-- .cned or enlarged as more clearly shown in FigLf ol' the. drawing. The magnet ma \Y he inclosed in a caelng l-l provided with a cover l5, having downwardly turned ends li', to secure a tight 'oint. '.lo the casing is secured L-shapcd hraclcts 1T h v which the makina-t or its casing iS fastened to the. cross ties ot the roadbed. To prevent the magnet from heine; injured by any of the gear of the train a shoe 20, which may he made ot wood or other suitable material, beveled or inclined upwardly toward the magnet. placed al each end ot the magnet as' yshown. and the end of theV shoe` next to the magnet may he` reinA forced with a piece of angle iron 2l. Secured heueath the tender ot' tht` engine and preferably to the truck thereof is a. cross har 22. to which is bolted a set ot four induction magnets These magnets are located on this cross har in pairs toward the rails leav ing' a sullicient. space at the center to prevent interference by any of thc equipment ot' the. track or running gear ot the` train. The, magnets l0 are so lo ated ou the track that aA eorresponding magnct .25 will pass' directly over it when the train is moving' and the. cross har is so located that the magnets 5 will he a suitable distance above' the magnets lll, about three. inches as now eonslrueteel. Each of the magnets 25 is: ot' special conv struetion and consist of two coils 2li wound in the form of circular hohbins. an iron core 2T projecting through the bohhins and provided with extended pole pieces 3S and an iron har 30 secured to an cud ot' each core.. The coiln are connected by conductors 3l which may pass through a ieee ot pipe to protect the. same... the ends o .the pipe being secured to the hohhins. Leading` from the. coils or bohhins are the. comluctore 32 and 325 which connect the coils in series with a relay 3l and a battery the said eoils and the. coils ot the relay being ot relativel \v high resistance, and as the voltage of the hattery supplying the coils is 2.8. only a small amount. ot' current is necessary to hold the, armature St in its normally closed position. Although the amount of current consumed by the. relay is comparatively small` the magnot is snilnriently powerful to prevent the contacts from accidentally opening hy vibration or jar of tratlic conditions.

Located in the cab of the engine is a casing 40 in whifh are tour electro-magnetic controlled air oalves 45. three lor controlling ill thv lamp Signals T1 and Signal whistles 44, and thv fourth tor vontrolliug the vent` ot the automatic hrakv mechanism aa well as a gnal whistle. A set` of lamp signals is placed in the front` and rear ot' the eah so that the ifIn.1l.--` ma)v he observed hy the en- ;inv dri ver when the engine is moving either hacltward or forward. The valve and controlling apparatus are alilu` and a description ot' one will answer for all.

ll i a valve vasing which is connected to thv air upplv pipe 4Q. Il is another air pipe hauling from the easing and to whivh is attaehvtl the Aaignal whistle 44. 471 is a valve in the vanne' to control thv suppl)r of air thereto. lt'l is a lever vonnvvtvd to thv casing Jui contacts with the Stem of the valve to heilt the valve to its Seat. :'10 is a magnet to vontrol thv valve 45 and it in So constructed that it vannot atti-avt its armature 51 after thv circuit haaJ heen hroken but the armature must hv mauualliv restored. To acvomplish this the armature ia provided with a Stem 58 which projvets through an opening 54 in the vuil ot' the lever. Secured to the stem is a patv or liek a' and surrounding the stem livhiw the disk is a eoil spring 56. thv lower vnd of the spring hearing against another diak 5l' loos-1e ou the armature Stem, the spring forcing the latter disk into engagement with the lever 4G. The outer end of the armature stem is provided with a deprvasiug: knoll 5H. The magnet is connect/ed in series with a contact or armature 34 of the relay 214 and to the battery 35 through the wires titl` 212 and 61, the Same hattvry 1ovini? need for ysupplying current for thv revviving voil of the induction magnets. relays, valves and lamps. 'T0 is a` spring contact to one mvmhvr T of whivh is connvvtvd the vonductiug wirv fil, and in thiI wire is the yaiggnal lamp 7l. The other mvmher 70 of thv spring contact is connvetvd to a conduct.- ing: wire 63 which leads to the hatterv 35 through the wire 42. All of thv wires Jlrom the induction magnets may he plaeed in a cahle T whivh extends under thv tender and up through the eab to the hox 40. This vahlo ia provided at suitable places with eonuvvting plugfa TP and 77 so that the vahle van he readily luokvn or dvtaehed.

The operation of the derive is as follows: Vi'hvn thv lovomotive is traveling along the track and ouv of the traelc mag-nets 1t) is pro'lwrly energized. to cause a signal or to stop thv train. as the corresponding influetion magnet passes through thc'ivld of thv trach magia-t a current is generated by induction in the Said magnet .5 which is more powerful than and flownl in the opposite direction to thc battery current normail; flowing in the coils 26 of thv Said in duftion magnet. The action of the. induced vinrent in the coils 26 momentarily reverses the magnetism of the relay 34 and permits the arnmture 34 thereof to drop. thus: breaking the circuit of the cah a iparatus. (lul)v a momentary operation ot the relay is necessary to properly transmit, a signal or canoe the Iatoppiug mechanism to he opvratvd. The cah apparatus has to he. manually restored to normal position after the relay has opened its` vontactJ for an extremely brief interval. 'Ihe hatterv current ia used through the inl Y. duction coil to give protvvtu'ni against tnv.

loose-ning or breaking ot' an)Y wire or connection` and while not essential to the avtual operation ot' the apllaratua` it is ahsolutviy necvsaary to lguard against any accident to wires and so forth. This interruption of the circuit momentarily dvinerlg'izva` the magnet and releases the armature hl. whereupon the pressure ot' air in the supply pipe 42 unseata the valve l5, whereupon thv air raalte through the Yalve easing l1 into thv pipe It and hlows the whistle 44. 'hvn thv valve is unsvatvd thv lever t6 is raised and the .spring 5G. which is normally under a light pressure, is further compressed vauving the disk to press the contaet mvmher 7H againety the vontavt` ntemhvr Ttr. cloninpr the lamp vircuit. The construction ia auch that. the action of thv spring when the armature -is releaavd will not force the dial; :'15 to vloav the lmnp cireuit` unless the lever is lifted high enough h v the valve l to gire thv` spring additional pressure. 'l`hv ohject ot' this is to eeonomize hattvlwv currvnt h v preventing the lamp from burning when the. engine iS in the round house and all the valves are, released hy reason of the reversing Switch being in the. off position. To rv Store the armature. the knob F18 is depressed, This forces the armature 5l into contaet with the coil 50. which being energized. haw ing been only momentarily` dviinvrgized upon the release of the armature ill, hold` the armature down to its normal position. When the armature. is forced to its nortnai position the disk 55 moves1 out of eontact, with the Spring member which moves to normal position, opening? the lamp circuit. AS the knoh is pressed downward the lever 46 Seats the valve and vut?. oH" the supply of air to the signal whistle, the magnet through its armature holding the lever down so that the valve cannot he released. The. valve controlling the automatic stop mechanism operatea in the same manner as in the Signal apparatus, the only difference in construction hein that the pipe 43 lead` to an auto matic va ve which operates to reduce the preasure in the train pipe'til which eauses the brakes to he applied in the usual manner, and the whistle 44 is connected to hv operated hy the air flowing: through pipe 43. as more fully shown iu Fig. 2. The automatie valve 80 must he reset` hy the engineer leaviup; the eabhefore the brakes van be released.

Various changes may be made in certain til'l will 1.17 the train magnet, a va details of the apparatus without departing from the spirit ot' the, same and it may be here Stated that a polarized relay will respond correctly to the current lgenerated in the induction magnet, but` the simpler form lshown and described in detail is preferable, as it is cheaper to manufacture and it. is l'onnd to be perfectly reliable.

It also apparent that as the current', normally continuously flows through the various eireuits, any interruption of the eurreut from any eauae will ydenergii/.e the magn net and cause a visible and audible alarm to be given.

What I claim as new and desire toseeure by Lettera Patent, ist# l. ln a train Signaling and Stopping apparat-ue, a single magnet Secured to the road bed` a Single induction magnet carried by the train` a normally eloaed relay eonnected to the aaid induetion magnet. a `ig4 ualing and Stopping device, a magnet ronneeted to the relay to control the signaling and stopping deviem Said magnet being normally energized, said parte being operated when the road bed magnet is energized and while, the induction magnet ia passing;r through the field of the road bed magnet to produce a current of greater strength than the normal relay current.

2. In a train Signaling and stopping apparatus, a magnet Secured to the road beth an induction magnet carried by the train`y a normally closed relay connected to the iuduetou magnet, a separate oir ruit for Aaaid relay, a stopping device and an audible Signal. a magnet eonnef-ted to the rt ay vii-ruit and controlling the stopping devine and the audible Signal, yaid parte being operated when the road bed magnet ivi energized and while the induetion magnet in passing through the field of the road bed magnet to produce a. current otl greater strength than the normal current ol the separate relay circuit, a visual Signal, and means controlled by the stopping device magnet forloperating the visual signal.

1i. ln a eombined train Signaling and stopping apparatus, afsingle magnet Secured on the roadbed, a -single magnet carried by the train and` movable within the field of the track magnet whereby induced currents of greater Strength than normal are produced in tbe train magnet, a valve` a signaling and `atopping device Controlled by the Said valve, u ane for normallyY holding the Said valve elosed and means to release `Qaid induced current is produced in the train y magnet.

ennibiued train signaling and Stopping apparatu, a magnet secured tothe road bed, a yingle magnet carried b v the train and movable within the field of the track magnet whereby induced currents are produced in lve, a. signaling and the valve when stopping deviee eontrolled by the saidwalve, means `for normally holding the said valve closed and means to release the valve when Said induced current, is produeed in the single train magnet.

ln a train signaling and stopping paratus, a single magnet eeeured on the roadbed, a single magnet. carried by tbe train and movable Within the field ot the roadbed magnet whereby induced currents are produced in the train magnet` a normally closed relay eonuetted to the winding ol' the train magnet, a valve raming, au air supply pipe eonneeted to the casing`r an air outlet pipe leading from the easing, a signal vvhistle connected to the outlet pipe. a valve in the casing controlling tbe supply ol` air and means tor releasing the valve from its seat, ,aaid means inrluding a u'iagnet ronneeted to the relay eireuit.

ti. ln a train lsignaling and :dripping apn paratn`-a single magnet 4aeeured on` the road bed, a single magnet carried by tlv train and movable within the lield ola roadbed magnet whereby indut'ed rui'renls are produced in the train magneha normally closed relay connected to the winding ot' the t ain magY net, a valve eaaingr` an air y upply pipe eoi neeted to the easing and an air outlet pipe leading l'rom the using. a, signal whistle connected to the outlet pipe, a. valve in the easing controlling the anpply of air,y means Jr'or releasing the valve from its seat, Aand meansineliuling a normally energized magnet connected to the relay eireuit and means for manually reaeating the valve and means `for causing the last named magnet to hold the valve to its seat.

7, ln a train signalingA and `topping ap retratos, a single magnet secured on the roadbed, a aingle magnet earried by the train and movable within the lield of the trae-lt magnet whereby eui'renta` are indueed in thetrain magnet when the track magnet is energized, a normally energized relay eonnected to the windings` ot' the train magnet. a valve casing, an air supply pipeeonneetedto said casing, a Signal whistle connected to said easing, a valve in the ezsing .adapted to open and close the air aupply pipe. a lever for holding the valve to its seat, a magnet having an'armature with a. stem thereon, the said lever being connected to the al't'mature, a circuit, eonneet'ing the magnet' and the relay, a eontaet in the. eireuit adapted to be operated on the movement of the armature.

55. ln a train signaling and Stopping aparatus, a Single magnet leeeured on the. roadbed, a Single magnet carried by the train and movable within the field of the track 'magnet whereby currentA are ndneed in the train magnet when the trat-k magnet is energized, a normally energized relay connected to the windings of the train magllt) net, u vulve easing, en :nir supply pipe connected to said easing, u si rnul whistle connected to seid causing, u va ve in the easing ndupted to open und close the er supply pipe, e lever for holding the vulve to its sent, n normully energized magnet huving un armature with u stein thereon, said lever heilig connected lo the armature, e eireuit ronnertino the nmgnet und relay, u signal lump in the circuit und [L eonteet in the eireuit adapted to be operated on the movement ol the armature.

U. 1n e train signaling und stopping upperntus :i single magnet secured on the roudhed, n single magnet carried by the train und movable within the field of the truck magnet whereby currents ere induced in the trein magnet when the track magnet is energized, :L normally energized relay ronneeted to the windings of the trein magnet, n` vulve casing, un uir supply pipe connected to seid casing, n signal whistle con-- nested to said easing, a signal whistle end :i trein stop vulve operated by air passing through the casing, a vulve 1n the easing udnpl'ed to open und close the air supply pipe, :L lever for holding the vulve to its sent, u. normally energized muguet having :in armature with u stem thereon, seid lever being eonneeted to the armature, e circuit eonneetin f the magnet und relay, a signal lump in t ie circuit end u Contact in the cireuit' adapted to he operated on the movement of the Ilirnuiture.

10. 1n e trein signeling und stopping aippuretus, u muguet consisting of :L circuler bohhin, :i core pussing through the bobbin, lield pieces connected to un end of eeeh eore, seid field pieces being widened or enlarged :it their upper or free ends, u eusing to reeeive the muguet, seid eusing huving u cover provided with downwardly turned ends und brackets secured to the resin lo secure the magnet to the treek und del ecb ing protectors for said mugnet.

11. In e trein Signaling and stopping nppuretus, n umgnet secured to the roadbed, deflecting protertors also secured to the roadbed and situated adjacent to und independent of the magnet, and arranged longitudinally of the roedbed.

In witness whereof I. have hereunto set my hand at San Francisco, county of Sen Fruneisuo, Stute of Californian, this 19th dey of April, 1915.

WA L'llflR S. Ll VI N.

In presence of- S. A. Bos'rNICK, Geenen C. FAULKNER.