US1207838A - Non-interference signal-box. - Google Patents

Description

c. E. BEACH & L. J. VOORHEES.

6 l 9 l 2 l M D d m m NON-INTERFERENCE SIGNAL BOX. APPLICATION FILED FEB. 23, 1m

T E E H 4 s T E E H s 3 c. 1-:. BEACH 111 1.. 1111111111 15 NON-INTERFERENCE SIGNAL 59x1 3 SHEETS-SHEET 2.

" Patented 1100.12,]91'6.

UNITED srrrrns PATENT OFFICE.

CLARENCE E. BEACH AND LEE 3'. VOORHEES, OF IBINGHAMTON, NEW YORK, ASSIGNORS,

BY MESNE ASSIGNMENTS. TO THE GAM A. CURPOBATION OF NEW YORK.

EWELL FIRE ALARM TELEGRAPH COQMPLNY,

NON-INTERFERENCE SIGNAL-BOX.

Specification of Letters Patent.

Application filed February 23, 1915. Serial No. 9,990.

are arranged both to control the effectiveness of the signali-ng contacts and to control the running of the signaling train, although certain features of this invention are adapted for use either separately or in combination With each other with many types of noninterference boxes, and certain features of this invention may be employed without other features to produce a highly efficient noninterference box, While with the addition of other features a noninterference and succession box is provided, and certain other features are adapted for a Separate use in connection with various forms of succession boxes.

An object of this invention is to pro vide a noninterference box in which the force of the noninterference magnet is more elfectively app-lied, so as to require the expenditure of less electrical energy in attaining positive action in noninterfer nce mechanism.

Another object of this invention is to provide an absolute noninterfcrcnce mechanism, adapted for use with various types of signal boxes, which will not act to interrupt the transmission of a; signal because of weaknessof line current unless such current substantially decreased after the transmission of a. signal has been initiated.

Other objects of this invention are to produce an absolute noninterference signal box devoid of fineadjustments. economical to manufacture, and not requiring skilled maintenance or readjustment in service.

Still other objects are referred to in the following specification and more particuout in the claims.

In att-aining the feature of this invention whereby the magnet of a'signal box is more ctl'cctively at Binghamton. in the and useful 1m force of the .noninterference applied. an operating force is providedfor disabling mechanism adapted to'prevent or defeat the operation of the signaling contacts by the train, the structure moved by said force being adapted to move independently of the noninterference armature, and

.carrying a part moving through a comparatively larger-ange and adapted to be latched when the armature is in oneposition and unlatehed by a comparatively small movement of the armature toward its other position, so that the energy which must be applied to the armature by the noninterfer ence magnet need only be such as will overcome the friction due to such coengagement, and the armature is not required at any time to move against the pull of such force, or to store up energy therein. Said operating force is applied to such part at varying advantage so'that, when restrained by the armature controlled latch, said force will be acting at minimum advantage and therefore the frictional load to be overcome by the movementof the armature is decreased to a. minimum.

in attaining the \vherehv an absolute noninterference signal box will not act to interrupt the transmission of a signal because of such weakness of line current that the noninterference magnet will not be adequately energized during closures incident to the transmission of a signal to prevent the noninterference mechanism acting to disableor defeat the action of the circuit controllers, a part moved by the train is so connected with the noninterference armature that such part will act just prior to the comlueiiceinent of the test period preceding the transmission of any signal, to apply a retractilc force, to said armature suhstantiall greater than any retractile force applied thereto during the transmission of any signal.

in the drawings arr-ompanying and forming part of this application, asigna-l box is shown embod-yin; all of the features ofthis invention in a preferred form. but this invention is not limited to the structure shown. as many parts may he added or omitted, and the form and arrangement of parts may be altered in many respects, without departing from the spirit of this invention.

in the accompanying drawings, in which feature ,of this invention like reference characters denote the same parts throughout, Figure l is a front elevation of a noninterfering and succession signaling box embodying the features of this invention; Fig. 2 is a top view of the signal box shown in F ig; 1, with the noninterfermanually disengageable stopping mechanism of the signal box shown in Fig. 1, and parts cooperating therewith and Fig. 6 is another detail view illustrating particularly the restoring lever.

Referring to Figs. 1 and 3, the armature 11 is mounted on the carrier 13 in suitable relation to the noninterference magnet 12. The carrier 13 is pivoted on the shaft 14 and one end of the retractile spring 153s connected to said carrier. A determining lever 16 is loosely pivoted upon the shaft 14 and has an end 17 disposed in the path of the armature 11. A spring 18 forms a yielding connection between the determining lever 16 and the carrier 13 and tends constantly to hold the end 17 of the determining lever 16 in engagement with the armature 11. The projections 19 and 20 carried by the determining lever 16 are adapted to' form controlling means for parts engaging therewith, as hereinafter more fully point-ed out. An extension 22 from the carrier 13 "is provided with a stud and the dependmg hook wire (See Figs. 2 and A suitable signaling train is provided comprising the shaft 25, gear 26 and clockwork arranged to drive and govern the speed of said shaft and in any well known manner. The escape wheel 27 is suitably driven by the gear 26, and said escape wheel engages with the pallet 28, said escape wheel and pallet, with the fan 29 mounted on the pallet shaft, acting to govern the speed of rotation of thegear 26. A manually disengageable stopping mechanism provided. forthe gear 26 comprising the stop arm 30, the lug 31 carried by said arm being adapt ed to engage with the pin -32 carried by the gear 26 when said arm is in a certain position, and to be moved out of the path of said pin when said arm is in another position. A suitable manual operating lever 33 is provided for manually raising the stop arm 30, and a prop 34 having a shoulder 35 and inclined face 36 adjacent thereto is so mounted in the path oi. the pin or projection 37 carried by the stop arm 30 that when the stop arm is moved to a position which carries the lug 31 out of the path of the pin 32, the pin 87 will be engaged by tend to draw said arm toward the stop 40 Where the lug 31 will be brought into the path of the pin 32. Separately insulated contacts 41 and 42ar-e mounted in suitable relation to the arm 30, and a shuntingcon tact 43 is mounted upon the insulating material 44 which is secured to the free end of the stop arm 30 in such position that when said stop arm rests against the stop 40 said shunting contact 43 will connect the contacts 4-1 and 42, and when the pin '37 is supported by the shoulder 35, saidcontact 43 will be ineffective. A stop 45 is mounted in the'path of the stop arm 30 in such position as to arrest the movement of said arm when it has been raised high enough to allow the shoul- The thread 49 is so formed in said worm that a tracer engaging said worm will be moved away from the flange 47 and toward the abutment 48 when the. shaft 25 revolves in normal direction. The tracer 50 is connected to the prop 34 by means of the uni.- versal joint 51, the free end of said tracer being adapted to be brought into engagement with the thread 49. The pin 52 is carried by the prop 34. in such position with relation to the tracer 50 that when said prop has been moved, through the engagement of the pin 2-37 with the inclined face 36, the free end of said tracer will be raised out of the path of the pin 48 and out of the thread 49.

' The spring 53 is so connected between the tracer.,5() and the pin as to tend to bring the free end of the tracer into engagement with the thread 49 and away from the end ing' end of mus, and for economy will arrest the movement of said tracer in response to its spring before the engagsaid tracer is moved far enough the abutment 48 to be carried beyond the end of the thread 49 farthest therefrom. The abutment i8 is so positioned with relation to the flange :7 that when the tracer 50 is brought into engagement with the thread it) at the end thereof nearest to said flange. said tracer will be brought into the path of the abutment l8 when the shaft 25 has made such number of revolutions as will cause the desired operation of the signaling contacts, and the engagement of the abutment lid with the tracer 50 will swing the prop 3i far enough to withdraw .the shoulder from the path of the pin 37 so that the arm 30 will be pulled down by the spring 3)), thus carrying the pin 3T along the inclined face 36 and swinging the prop 3i far enough to cause the tracer 50 to be disengaged from the abutment i8 through the action of the pin 52, whereupon the spring will swing said tracer 50 against the flange l7, and such dropping of the arm 30 will carry the lug 31 in the path of the pin 32 and thus arrest the running of the train.

Signal formulating mechanism is provided comprising contact operating ,means moved by the signaling train, signaling levers adapted to be operated thereby, and circuit controlling or signaling cont-acts carried by said levers.

The contact operating means consists of a signal wheel having suitable teeth and notches formed therein for imparting the tended movement to the signaling conin manufacture, and convenient adaptability should comprise the sections 54 and which are fixed upon the shaft 25 (see Fig. 3). The front section 54: of the signal wheel has notches corres 'ionding with transmitted. while the rcar section 55 has away from notches corresp ind-'ngwith. the breaks of the signal to be. transmitted. v

Thesignaling lever 56 is loosely pivoted at 57 and is provided with a projection 58 adapted to drop into the notches in the front; section 5 of the signal wheel. and thesignaling lever 59 is also pivoted at 57 and has a projection 60 adapted to drop into the notches in the rear section of the signal wheel. mounted upon, but suitably insulated from, the signaling lever 56 near the free end thereof and comprises a jaw contact. The circuit opening blade contact 62 is similarly mounted near the free end of the signaling lever 59. The various pars of this signal formulating mechanism are of such relative construction and arrange nt that as the shaft is turned in its orinal direction such relative movement of the contacts 61 .lever 59 has the closures of the signal to be The circuit closing contact 61 is' and 62 will be obtained as will alternately bringsaid contacts into engagement. with each other and separate them.

The sections 54 and 55 are maintained in suitable position with relation to one another by means of the pin (3 -3 passing therethrough, and said sections are so arranged that their relative positions upon the shaft 25 may be reversed, so that the section 55 will be so placed as to coengage with the projection 58 and section 54 will engage with projection 60. When these sections are arranged as shown in Fig. 3 the operation of said sections will cause such relative movement of the signaling contacts 61 and 62 as will produce makes and breaks of the circuit such as are characteristic of a socalled open type signal wheel and when these sections are reversed, so that the section 55 is in front and the section Qiis mounted behind it, the signal transmitted will be that characteristic of a so-called closed type" signal wheel. In any event the section engaging with the projection 58 will raise the lever 56 to a point so high that the contact 61 carried thereby will be above the limit of the travel which may be imparted to the contact 62 by the section of the signal wheel engaging with the projection 60, and the notches are always so arranged in the two sections that when the been raised through the en gagement of the inclined face of any notch with the projection 60, and before said lever is raised to ti 2 highest point to which it is carried by the section coe'ngaging therewith,

the projection 58 will be permitted to drop into a notch in the front section so as to provide an instantaneous action in closing the circuit, and thereafter when an inclined face of any notch of the frontsection is in close proximity to the inclined face of the projection 58 but just before engaging therewith a notch in the rear section will be presented to the projection 60 and thus allow the arm 59 to drop just before the arm is 'so raised as to carry the contact 61 away from the contact 62, and thus provide instantaneous action in opening the circuit.

Inasmuch as the contact 61 always acts to instantaneously close the circuit, and the contact 62 always acts to instantaneously open the circuit, said contacts are herein referred to as circuit closing and circuit opening contacts respectively.

A stop (it is carried by the circuit opening contact 62 and is arranged to limit the distance which said contact blade 62 may enter the contact jaws 61, so that said contact jaws may be formed of pliable material-so as to permit the blade GZ'to readily penetrate .between them and thereby obtain a rubbing contact on both sides of said bladesimilar to that of an ordinary knife switch while maturely brought into engagement with the inclined face of any notch of the front section 54.

While it is preferable to use the contacts- 61 and 62 carried by the signaling levers 56 and 59, respectively, so as to obtain the instantaneous action both in making and breaking the circuit, it is evident that many features 'of-this invention may be advantageously utilized in connection with other well known forms of circuit controlling contacts, but in any event the contacts must be so controlled by the signaling lever 59 that the circuit will be closed when said lever is raised by the signal wheel and the circuit will be opened when said lever is allowed to fall.

The end of the signaling lever 59 is extended in the direction of the projection 20. and is so formed in relation thereto that when the projection 60 has dropped into any of the notches of the section of the signal wheel coiiperating therewith, said end will lie in the path of the projection 20 and thereby hold the determining lever 16 in )osition to retain the armature 11 in attracted position and when said signaling lever 55) occupies a position at or above that to which it may be raised by the engagement of the signal wheel therewith. the said end of said signaling lever will be. raised above the projection E20 and thus permit the retraction of the armature 11.

The catch arm (35 is pivoted on the signaling lever 59 at (ill and carries a projection (37 which. for convenience 1n manutacture,

extends in the path of the rear section 55 ot the signal whee] so that said catch arm may be raised and dropped substantially in step with the vibrations of said signaling lever 59, in any event this catch arm must be raised just prior to the initiation of the transmission of a signal. and should not be raised at any time when the signal wheel is not in position to support the signaling 'lev-er 5E.) through its engagement with the projection (ill thereof. for reasons which will we 1e e a' .1' no i L: a l l r111 tte 1 1 tall; l in l a a. f a i l catch (in is caiiud b tln catch arm 05 and is arranged to project rearwardly from said arm past the signaling levia- A holder to is pivoted at T0 and has the shoulder Tl adapted to be engaged by the catch 68 and has the holding notch 72. and,

wheel.

contact 61, and will raise said contact til high enough to carry the projection 58 out ofthe path of the section 51 of the signal wheel, and so that when said holder is in another position, the holding notch 72 will lie' in the pathof said projection 74: andthus prevent thesignaling lever 59 from rising high enough to maintain a connection between the contacts 61 and 62 when the sig naling 1ever 56 has been raised to the limit of the travel which may be imparted thereto by the signal wheel.

' The hook 73 is-so formed and bears such relation with the pivot that when the holder 69 is moved from the position where "the notch 72 is in the path of the projection the signaling lever 56 as to tend to hold the projection 58 in engagement with the signal The operating spring 76 is so applied to the catch arm 65 as to tend to main tain both the signaling lever59 and the pro jection 67 carried by the catch arm (35 in cu gagement with the signal wheel. .In other words, the operating spring is so applied to the catch arm that either the projection 67 or the catch 68 may act as a fulcrum around which said arm may be rocked by said spring and through its pivot connection 66 holds the signaling lever 59 in engagement with the signal wheel. The catch arm 65 therefore forms means operable by the train whereby the movement of. the disabling mechanism, comprising the holder 69. from its disabling position where it holds the signaling lever 59 in elevated position to the position where it will permit the projection 60 carried by said signaling lever to drop into the notches in the rear section of the signal wheel and thus produce breaks in the signaling circuit. will be permitted only when said rear section is in position to support said projection (50 in elevated positiom'which position occurs only during closures of the signaling contacts.

The arm 77 is fixed upon the shaft 7 8 which shaft also has the stop arm 30 fixed thereon in suitable relation to the arm 77 so that said arms 30 and 77 W11] move together.

The restoring lever 79 see Fig. (l is pivoted on the frameat 80 and one end of said restoring lever is adapted to be engaged by the free end. of the arm 77 so as to be moved thereby and the other end of 'said restoring lever carries the pivot 81, which has the extension 82 thereupon which lies in the path of the signaling lever 5.9. and is so positioned in relation thereto that when the restoring lever 79 occupies the position in which it will be held by the arm 'I'Twhen the stop arm 30 is in such' position that the lug 31 thereon lies in the path of pin said extension 82 will raise the signaling lever 59 to the position to which it may be raised by the engagement therewith of the hook T3 carried by the holder 69. Said pivot 81 and extension 8:2 thereforeconstitute a connection operated by the restoring lever 79 adapted to act to render the contacts (31 and 2 unresponsive to the running of the train whenever the stop arm 30 is in position to arrest the running of the train.

The latch arm 83 is mounted. upon the pivot 81 to turn freely thereon, and the hook S-l is formed in the free end of said latch arm in suitable relation to the projection 19 so that when the determining lever l in one position,- said projection 15) will lie in the path of said hook and so that said projection will be withdrawn fromthe path of said hook when said lever 16 is moved by a very slight retractive movement of the armature ll. lhe slanting face is formed in suitable relation to the hook til so that when said hook is below the projection 19 and. the latch arm 83 1s raised while. the armature ll is in attracted position, said 19 and thereby swing the lever 16 to carry said projection out at the path of said hook and permit the latch arm .53 to be raised to a position where said projection 19 may be carried in the .path of hook 8i and thereby latch said hook.

The projection 86 carried by the latch arm 83 is so formed with relation to the tongue 87 formed in the signal wheel hub 88 that the engagement of said tongue with said projection may impart such movement to the latch arm 83 as will raise the hook 841: to latching position where it may be engaged by the projection 19.. Said projection 86 and tongue 87 therefore form means operated by the train in running for adjusting the retractile spring 1.5 of the latch arm 83 to apply a maximum tension to the noninterte'rencc aruiature 11v at least once, during cach rotation of the signal wheel.

The cam face 85$) is carried by the latch arm 83 in such position with relation to the holder (31. that when-the restoring lever 79 is in the position which it occupies when the stop arm 3-30 is in position to arrest the run- .ningot' the train, the engagement of said cam tace with the face 90 of the holder (3i) will be such as to swing said holder to the position whereit will permit the signaling levcr 5!) to beraised out of cngagemcut with slanting face will engage with the projection the signal wheel, and where it will carry the shoulder 71 in position to be engaged by the catch (58. and so that when the restoring lever '79 is in the position which it occupies when. the stop arm 30 has been raised until'the pin 37 is supported by the shoulder 35, said cum face will permit the holder 9 to move to the position which will carry the hook 73 out of the path of the projection 74 and will bring the holding notch 72 said projection 74 when the latch arm 83 is in position where it holds the hook 874 in posi-' tionto be engaged by the projection 19, and on its pivot 81 so that the hook Si is a suitable distance below the projection 19, said cam face will move the holder 69 to the position where the hook 73 will engage the projection Tl.

From the foregoing it will be seen that the in the path of so that when the latch arm has turned latch arm 83 and the holder 39 and parts coconstantly tending to act to render the sig-' naling contacts unresponsive to the running oithe train.

it will further be seen that the cam face 8S) forms 'a slack connection between the latch arm 83 and the. holder ()9 whereby the downward movement of the latch arm after it has been disengaged from the projection 19 may move the holder to disable the signaling contacts'and may retain the holder in disabling position without .thereby obstructing the movcmentot the latch arm as the hook 8% is out of the path of the projection 19 when said latch arm is in disabling position. i

An end o1 the armature retractile spring 15 is so connected to" the latch arm as to constantly impart thereto a tendency to move coiinter-clockwise, and that I when the hook Hat is in engagement with the projection 19 the operative effect of said spring upon said latch arm will be applied thereto only at such advantage as to be capable of safely moving said friction of its pivot in counterclockwise direction, and so that the operative effect of said spring will be applied tosaid l'atch arm when the book 84 has moved out of engagement, with the projection 19 in countercloclo ,wise direction at such advantage as to be capable of safely in'ioving said latch arm to operate the holder) to raise the signaling lovers 59 and 5(3, and such amount of travel is permitted the latch arm 83 that when said latch arm has so moved, the tension of said spring will be mate ially decreased. and therefore the rctractile force applied by said to the armature 11-when the latch spring I arm H has acted to disable the signaling latch arm against the for the disabling mechanism, and controlled by the armature through the en: gagement of. the hook 84 with the projec-.

tion 19, and the spring 15 constantly im. parts a tendency to said latch arm to act to move the h0lder.69, forming part of the disabling mechanism, to the position where it will render the contactssfil and 62 unresponsive to the running of th train.

' The hub 88 should preferably be mounted upon the shaft 25. in such position with relation to the pin 32 that when said pin is holding the train at rest by engagement with the lug 31, the tongue 87 will support the-latch arm 83. in such position that it may be raised to the position where the hook 84 may be engaged by the projection 19 when the train 1s set in motion, and so that when, the

train is set in motion, said tongue will be quickly withdrawn frOm the path of the projection 86 so as to permit the latch arm 83 to drop if not supported by the projection 19 remaining in the path of said hook 84.

The detent 91 has the forked end 92 adapted to receive the stud 23 so as to be moved thereby, and said'detent is pivoted at 93 to the restoring lever 79 near the end of said leverwhich carries the pivot 81. The end 94 of the detent 91 is so formed that it is adapted to engage the fan 29 to stop the train, and said detent is so constructed and arranged that when the restoring lever 79'is in the position which it occupies when the lug 31. is in the path of the pin 32 said detent will be rendered ineffective to engage the fan 29, through the lifting of the pivot 93 carrying the end 94 out of the path of said fan, but when the lever T9 is in the position which it occupies when the pin 37 is supported by the shoulder 35, the pivot 93 will be dropped far enough so that when the stud 23 is in the position which it occupies when the armature 11 is in retracted position, the end 94 will lie in the, path of the fan 29 and thus arrest the running of the train, and when the armature 11 is in attracted position the stud 23 will swing the dejent 91 so as to carry the end 94 out of the path of said fan.

When this signal box is in normal condition (as shown in Figs. 1, 2 and 5),the

stop arm 30 is held by the spring 39 in enface 89 with the face maintains the holder 69 in looking position, thereliy permitting the catch 68 to lie in the path of the shoulder 71 of saidholder. The tongue 9 87 is in such engagement with the projection which will bring said hook in the path of and slightly below the upper edge of the a pro ection 19, and will bring the projection 86 in such relation to the tongue 87 that a comparatively slight movement'of the shaft 25 willcarry said tongue 87 opt of the path of said projection 86. The p'rop34 is maintained in its extreme left hand position by the engagement of the pin. 37 with the inclined face 36 thereof, and thereby holds the tracer-50 out of the path of the abutment 49 and thread 49 of the worm 46 by means of the pin 52 carried'by said prop 34.

Owing to the stop arm 30 being in its lower position, the noninterference, magnet and the signaling contacts will be shunted by.

the shunt connection established between the engagement therewith, and the armature 11 is in retracted position, holding the pro'-- jection'19 out of the path of the hook '84 and the projection 20 in the path of the free end of lever 59.

The operation of this signal box to condition it for the transmission of a signal is, for convenience, herein referred to as f pulling the box, and is accomplished byapressing downwardly upon the handle mounted upon the front end of theoperating lever 33 (see Figs. land 2). Such pulling of this box acts to condition it for operation as 'followsr-The movement of lever 33 lifts stop arm 30, thereby so moving the contact, 43 as to brealr the shunt around the signal-- ing contacts and the noninterference mag net, and carrying the pin 37 out of the path of the inclined face 36 and above theshoulder \Vhereupon theprop 34 will move to such position as to bring said shoulder 35 into the path of said pin 37, to retain the stop arm in elevated position, and ,to

gages the stopping mechanism from the train. The coincident movement of tho-11estoring lever 79 so lowers the pivot 93g1s to bring the-end 9% of the detent 91 into the path of the fan 29 if the armature 11 is in retracted position, and such movement of the restoring lever 79 also lowers the pivot 81 so as to carry the cam face 89 out of the path of the curved face 90 of the holder 69, and carries the extension '82 out of the'pathi;

of movement of the signaling lever 59. Said holder will be held againstsuch movement as will release the signaling lever 59 by the engagement of its shoulder 71 with the catch US.

The operation of this box after being pulled in a normal circuit at a time when no other signal is in course of transmission upon said circuit is as follows: When the contact i3 is withdrawn from engagement with the contacts 41 and all the line current will be forced to flow through the noninterference magnet 1.2, and said magnet will thereupon be energized and cause the armature 11 to anove against the tension of the springs 15 and 18, the tension of the spring 18 being applied because the determining lever 16 is held against movement with the armature 11 by the presence of the hook Si in the path of the projection 19, and such movement of the armature 11 will further act to withdraw the end 9i of the detent 91 from the path of the fan 29 and thereby permit the train to run, and will permit the tracer 50 to move into engagementwith the thread at?) of the worm in. lVhen the train commences to run in response to its being released from .the restraint of .the detent 91, the action of the tongue 87 upon the projection 96 will raisethe arm 83 somewhat higher, thereby imparting additional tension to the armature retractilespring 15 while continuing to apply the tension of the spring 18, both oi said springs thus tending to retract the armature 11, however. the armature 11. will remain in attracted position because the normal line current which is flowing through the magnet 12 sutliciently energizes magnet 12 to overcome both of said sprii'igs, and the continued movementof the tongue 87 will raise the latch arm 83 high enough to carry the hook Si above the projection 19, whereupon the spring will swing the lever 16 so as to carry the projection 19 into the path of the hook 8i, and at the same time swing the projection 20 but of the path .of the free end of the-signaling lever 55 and thereafter a slight additional movement of tlnr shaft 23 will carry the tongue 9? out of the path of the projection 5i ud thus per mit the hook Si to drop upox and be supported by the projection 15). The signal wheel sections being arranged as shown in Fig. 5 so that the makes and breaks of the signaling circuitwill be those characteristic of the operation of a nil-(illlhll open tvpe' signal wheeh the train will continue run-- ning for a time longer than the longest closure in any signah and throughout said time a notch in the se tion'SB ol' the sifiual wheel will be presented to the projections and (37, but at thrtermiuaiion of such time such not h will end, and ihe inclined face to theri ht of such notch will be bromrhl into engagement with the projection 67 and with the raised portion to the right of said' inclined face, and said raised portion of the signal wheel will prevent the signaling lever 59 from dropping far enough to open the circuit between the signaling contacts. \Vhen said lncllned face of the section of the signal wheel is thus brought in the path of the projection (30. a notch in the section 54 will be presented to the projection 58. After the shaft '25 has further rotated asuitable distance, the inclined faceto the; right of such notch in the section 54: will be brought adjacent to th v said projection and thereupon a notch in the section will be brought into the path of the projection no, whereupon-the signaling lever 59 will drop. and the downward movement of the signaling lever 56 will be so arrested as to permit the circuit opening contact 6:2 to be moved out of engagement with the circuit closing contact oi through the action of the operating spring Til. If however said contacts are welded or for an} other reason stick together, the engagement. of the inclined fare of the notch in the section 54 of the signal wheel will raise the signaling lever 56 still higher. and thus bring the projection 7 carrie by the signaling levep 59 into engagement with the holding notch 72 in the holder (39. thereby arresting the upward nu'n'emcnt of the signaling lever 59 and ap plying the force of the rum'iing train to assist the spring To in separating said contacts. Thus in any event the contacts will become separated. and the movement of con-' tact U2 away from the contact ()1 will be practicallv instantaneoim and thereby eifective-ly break the circuit between said contacts. and as the signaling lever so drops in carrying the contact (32 a way from the .coi'itaci (31. the free end'of said lever willpass to the right of the projection 20 and thus lock the determining lever i l and the armature ll against retrartive movement. Upon further rotation of the shaft the inclined wall to the right of the notch in section 55 into which projection 60 has dropped will raise the signaling lever :39 almost to the position where the contact 62 will touch ihcrontact (3] before a notch in section Si is presented to the projection 55. of the signaling lever 5(3. and thereupon such notch will be presented and allow the said signaling lever so to drop and thus instanthereto.

taneously close the current path between said contacts, and thereafter the further rotation of the shaft 25 will cause the signaling lever 59 to be raised slightly higher so as.

ing contacts as will produce the intended makes and breaks in the circuit connected As the shaft revolves the tracer 50 will be carried against the tension of spring 53 toward the path of the abutment 48 by its engagement with the thread wand, upon said shaft 25 con'ipleting the intended number of rotations, the abutment 48 will be brought into engagement with the free end of said tracer 50, and will act through said tracer to force the prop 34 to such position as will withdraw the shoulder 35 from the path of the pin 37, whereupon the spring 39 will more the stop arm 30 downwardly and thus carry the pin-3'?- in engagement with the inclined face 36 so as to swing the prop 34. to a position where the pin 52 carried by said prop will lift the-tracer 50 out of the thread 45) and out of the path of the abutment 48, so that said tracerwill swing toward the flange 47 in response to the tendency of the spring 53. Upon this downward movement of the stop arm 2-30 the shunt contact 43 will connect with contacts 41 and 42, the lug 31 will, be brought into the path of the pin 32, the end 94 of the detent 91 will be carried out of the path of the fan 29, the extension will raise the signaling lever 59 to its upper position, the cam face 8!) will swing the holder (3!) so as to permit the signaling lever 5!) to be so raised and to permit the catch (38 to move into the path of the shoulder 71 of said holder, and the arn'iature 11 will "be permitted to move to retracted position owing to the free end of the signaling lever 59 being thus raised and the magnet 12 being dei nergized due to the closing of the shunt contacts 41, 42 and 43, but the train will continue running until the pin 2-32 is brought into engagement with the lug 31, thus returning all parts to their normal condition.

The operation of this box if pulled when the line circuit isbrokcn does not extend be yond the operation of parts'described in coniiection with the pulling of the box as, since the armature 11 remains in retracted position, the end 94 of the. detent 91 is brought into the path of the fan 29 when the stop arm 30 is manually raised before the lug 31 is wholly withdrawn from the path of the pin 32, and no'movement of the train will therefore take place so long as the circuit stands open.

l The operation of this box when it has been pulled on open circuit and the circuit is subsequently closed, is as follows: When this box is pulled on-open circuit, the train is held against running by the engagement of the end 94 of detent 91 with the fan 29 j as just described, but when the circuit is closed while the box is so held against running, the energization of the magnet 12 incident to said closure will cause the arma ture 11 to move to attracted position and thus swing the detent 91 to such position that the end 94 will be withdrawn from the path of the fan 29, and if the signaling circuit remains closed thereafter at' points external to this box, the operation of the box will continue as hereinbefore described in connection with the pulling of the box under" normal circuit conditions.

The operation of this box when pulled after another box has commenced the transmisison of its signal, is as follows: If, at the instant that this box is pulled, the line circuit stands open incident to the transmission of the signal of the box already in control ofthe line, the end 94 ofthe' detent 91 will remain in engagement with the fan 29, and the train of this box will not commence to operate until the circuit is again closed. However upon the first closure of the circuit,

mcnce to run, and upon each break foll0wing such a closure, the armature 11 will retract and the odd 94 willagain engagethe fan 2!) and stop the train. After one or more of such closures, the'shaft 25 will have been permitted to rotate far enough to withdraw the tongue 87'from the .path of projection 86, whereupon the latch arm 83 will move downwardly ih response to the tension of the retractile spring 15. As the train runs for a time longer than the longest closure in any signal afterthe disengagement "of the tongue 87 from the projection R6 and before the signaling contacts are permitted to act to make the first break for the signal, it is evident that any closure which causes the detent 91 to be withdrawn from the path of the fan 29 at a timewhen such withdrawal will permit the tongue 87 to be carried out of the path of the projection 86 will end before such test period has been completed, and thereupon the armature 11 will retract, carrying the projection 19 out of the path of the hooktll, whereupon the arm 83 will move downwardly and thus swing the cam face 89 to a position which will cause the hook 73 to engage the projection 74 and lock the signaling lever 59 in elevated position. While the latch arm 831s in its lower I with the projections 5.8,and 60 of the signaling levers and therefore no relative move-' ment of the signaling contacts Will result.

from such rotation of the signal wheel, but, during all breaks in the signaling circuit the detent 91 will engage the fan 29 and prevent the signaling train from running, and during, closed circuit intervals the armaturell will move to attracted position and thus Withdraw the detent 91 from the path of the fan 29 and permit the signaling train to run. With the signal wheel sections arranged, as already stated, to cause the formulation of a signal characteristic of a so-called open type signal Wheel, the closures are of very short duration and merely last long enough before each-break to give ample time for the magnets in the circuit to properly respond to the current flow therethrough, and during all of the remaining interval between breaks the circuit is held open, therefore it will be found that the sha'ft 25 Will make less than one revolution as the result of the closures resulting from the transmission of the desired nhmber of rounds ,comprising'the signal of an- .other box, "and, When the signal of 'such' other box has been completed and the cir cuit is finally closed thereafter, the armature 11 of'this box Will move to and remain in attracted position and this box Will rununtil the tongue 87 engages theprojection 86 and thus raises the latch-arm S3 and carries the hook 84 past the projection 19, in doing Which the face 85 of said hook will force the projection 19 slightly to the right until said hook 84 is above said projection, whereupon the spring 18 will swing said projection into vthe path of said hook and immediately thereafter the tongue 87 will disengage the projection 86 and this box Will then proceed with the transmission of its signal in the manner. already described.

If. two of these boxes are pulled at 01" about the same time, so that the signal Wheels of such boxes reach the point Where they are adapted to act to cause the circuit to be broken at the signaling contacts one slightly ahead of the other, it is evident that upon the circuit being broken by the contacts of the box which first acts to break the circuit, the armature of the other ofsaid boxes Will retract and its. latch arm .83 will drop and thereby lock its signaling contacts. After the first box has completed the transmission ofits signal, the second box Will proceed in the manner hereinbe fore described, as when pulled after another box has. commenced the transmission of its signal. The operationof'two of these boxes if pulled so as to break the circuit at their respe tive ignaling contacts simultaneously is as follows: The determining levers 16 of both boxes Will be looked upon the first break in the, circuit as both signaling levers 59 will drop at the same time, and thereafter the signaling levers of said boxes may operate in unison for" several strokes if the trains 'of such boxes areso nicely adjusted that the notches in their respective signal Wheels will be presented to their corresponding co-engaging signaling levers at exactly the same time, but upon the 'first occasion \ivhen the signaling lever 59 .of one of said boxes drops, or is in its lower position, at a time when the signaling lever 59 of the other of said ,boxes is raised high enough to bring its free end above its co-engaging projection 20', the armature 11 -of'the box having its le er 59 in such elevated position will retract upon the with drawal of the-restraint of the deternlhning' the book 84 lies in the path of theprojection 19 so that it will not permitthe determining lever16 to move with the armature 11, and therefore the movement of the armature to its attracted position is resisted by the force of the, spring 18 in addition to, the force of the spring 15. Hence the armature 11 will remain -in retracted position unless the line current is strong enough to so energize the magnet 12 as to overcome both of these springs and thus Withdraw the detent 91 from the path of the fan 29. When the magnet is so energized, the train will commence running and thereupon the tongue 87 will raise the arm 83 somewhat higher, thus first imparting an additional retractile force to the armature 11 through the additional stretching of' thespring 15. If the train is not stopped on account of such additional retractile force; the hook 81 will be raised above the level of the projection 19, and the end 17 of the determining lever'lfi will move against the armature 11 thereby relieving said armature from the retractile force of the spring 18 and leaving it subject only to the retractile force of the spring 15.

From the foregoing it is apparent that any line current-strength which is suflicient to causethe armature 11 to move to release the train from the detent 91 against the retractile force of the spring 18 While the hook 84 is? in the path of the projection 19, will be suiiicient to retain the armature .11 in its attracted position during the closed arr circuit periods incident to the transmission of the signal of this box, and it will. thus be seen that any current strength Which will permit a signal to be initiated Wlll retain the armature mattracted position throughout the transmission of such signal. After this 'box hasbeen interfered with, and has come to rest due to a, circuit inter ruption incident to the transmission of the signal of some other box, the "current strength may thereafter be so substantially decreased (2191 136111 the serial inclusion in its circuit of the magnets of a plurality of other boxes which may be pulled at or about the same tirne) that, with the normal tension of the spring 15, the added air gap between the armature and magnet, and the, frictionincident to withdrawingthe detent 91 from'engagement With the fan 29, the armature would not be moved to attracted position even though the line current Was still. strong enough to assure the transmission of a signal if the train Was once started,

but, owing to the peculiar construction of this box, the tension 01 the retractile spring 15 is substantially decreased Whenever the latch arm 83 swings to lts lower PQSliilO'Il, so

- that the armature'll will be permitted to move to attracted position upona comparat vely slight energiz'ation off the magnet 12. However, even under these clrcumstances the transmission of a'signal Will not be initiated unless the .line current strength is sulhcient to insure the completlon of such signalffor the reason that the latch arm 83 must be raised by the tongue 87 before a signal can be initiated when the box has once been interfered with, and when so raised the spring 15 will be restored to substantially normal tension and the face 85 of the hook 84. carried. by said latch arm will act against the projection 19 to stretch the spring 18 so as to tend to move the armature 11 to retracted position, and the strength of said springs 15 and 18 is so proportioned t0 the power and permeability of the magnet 12 and armature 11 that unless the ciilrrent through magnet 12 is $111?- ticicnt to so energize said magnet as to prevent retraction ofthe armature 11 under.

the tension of the retractile spring 15 with in the time which elapses during eachclosure of the signaling contacts While the free end of the signaling 1ever59 i's-out of the path of the projection 20, said spring will cause the retraction of said armature and prevent the initiation of the signal.

l-laving now fully described our inven tion, what We claim and desire to secure by LettersPat-ent oi ,the United States is: 1nd signaling train, signaling contacts operable thereby, t noninterference mag-' net, an armature therefor, disabling means controlled by said armature constantly. tend to act to render said contacts-unrespon neonate sive to the running of the train, an actuating spring, one end of which is connected "to said meansyand the. other end to the armzv ture so that when thesignaling contacts are disabled by said means the force applied to said armature by said spring will be substantially less than when said signaling contacts are free'to act.

2. A signaling train; signaling contacts operable thereby; a noninterference -magnet; an armature therefor; disabling means controlled by said armature adapted to render said contacts unresponsive to the runningof the'train; an actuating spring, one

'end of which is connected to said means,

and the other end to the armature; and meansoperated. the train in running for moving the disabling means to adjust said spring to a maximum tension at predeter-- mined intervals during the runningofthe train. i

r 3. A signaling train; signaling contacts operable thereby; a noninterference magnet; an armature therefor; disabling means controlled by said armature adapted to reinder said contacts unresponsive to the running of the train; "an actuating spring, one end of which is connected to said means, and the other end to' the armature; means operated by the train in running for moving said disabling means to adjust said spring to a maximum tension at predetermined intervals during the running ofthe train; and means governed by the positionoi the armature for retainingsaid maximum ten-' sion While the armature remains in attracted pos tionm operable thereby; a noninterference mag} net; an armature therefor; d1sabl1ng means controlled by said armature adapted to render said contacts unresponsive to the run ning of the train; an actuating spi'ing, one end of which is connected to said. means, and the other end to the armature; means operated 'by'the train in running for moving the disabling means to adjust said spring to a maximum tension at predetermined 1ntervals during the running of the train;

and means governed by the position of the armature for retaining said maximum tension While the armature remains in attracted position, and for decreasing said tension upon retraction of the arnlature.

5. A slgnallng train; slgnalmg contacts operable thereby; a noninteri'erence mag not; an armature therefor; disabling means controlled by said armature adapted. to render said. contacts unresponsive to the run ning of the train, when in one position, and adapted to assume a. sccondposition render mg said contacts responsive to the running of the train; an actuating spring, one end.

(if-Which is connected to said means, and

the otherend to the armature, and means A signaling train; signaling contactsgoverned by. the position of the disabling retractile' spring whenever said disabling means for suitably varying the tension of means has acted in response to the retraction of said armature.

7. A signaling train; signaling-contacts operable thereby; a noninterference magnet; an armature therefor; sprin actuated disabling means constantly tending to act to render said contacts unresponsive to the running of the train; and a determinin lever.for said disabling means so connected with said armature that it maybe positively 'moved in one direction by the retructive movement of said armature to disengagi the may e moved by the train, andso arranged disabling means permittingit to opei to, and that it may be yieldingly moved in the opposite direction by the attractive movement of said armature to admit of-the engagement of the disabling means therewith.

8. A signaling train; signaling contacts operable thereby; a noninterferen'ce magnet; an armaturetherefor; disabling means constantly tending to act to render said'contacts unresponsive to the running of the train when'inone position, and adapted to be moved by the train to a second position rendering said contacts responsive to the running of the train; and .a determining lever so connected with said armature that it may be .positively moved in one direction upon the retractive movement of said armature, and that it may be yieldingly moved in the opposite direction upon the attractive movement of said armature; said determining lever being adapted to holdsaid disablin means in the position to which it that upon movement of said armature to retracted position, said disabling means will not be so held.

9. A.'signaling train; signaling contacts.

operable thereby; a n'oninterference magnet; an armature therefor; disabling means constantly tending to act to render sald contacts unresponsive to .the running of the train; and a determining lever operated by the retraction of thearmature adapted to hold said disabling means ineffective and adapted to be engaged-by a nart' 'moving with said signaling contacts to hold said armature in attracted position whenever the signaling contacts are in a predetermined position.

10. A signaling train; signaling contacts operable thereby; ea noninterference mag net; an armature therefor; spring actuated disabling means constantly tending to act to render said contacts unresponsive to the runningof the train; and a determining lever for said disabling means associated I with said armature and adapted to move independently thereof, a portion of said lever being disposed in the path of said armature to be positively moved by said armature upon retraction thereof and means controlled by the train in running to place the disabling means under the control of the determining lever, and also'to restore it from disabling position;

11. A signaling train; signaling contacts operablethereby; a noninterference magnet; an armature therefor; spring actuated disabling means constantly tending to act to render said contacts unresponsive to the running 0 'the train; and a determining lever for saiddisabling means associated with said armature and adapted to move independently thereof, a portion of said lever beingdisposed in the path'of' said armature to be positively moved by said armature upon retraction thereof; said determining lever being adapted to hold said disabling means ineffective and means controlled by the train in running to place the disabling means under the control of the determining lever, and also to' restore it from disabling position.

12., Ajsignaling train; signaling contacts operable thereby; a noninterference magnet;

an armature therefor; disabling means co-n stantly tending to act to render said contacts unresponsive to the running of the train; and a determining lever adapted .to

hold. said disabling means ineffective, said determining lever being adapted to be moved out of the path of the coengaging part of said disabling means upon a comparatively slight retractive movement of said armature, and to be moved by the disabling means out of the path thereof while the armature is in attracted position.

13. A signaling train; signaling contacts operable thereby; a noninterference magnet; an armature therefor; disabling means constantly tending to act to render said contacts unresponsive to the running of the train; and a determining lever adapted to hold said disabling means ineffective, and so.

governed by the armature that upon movement-of said armature to retracted position the disabling means will not be so held; the train operating to move the si nalin con.- tacts into position to be engage by the disabling means, to be thereby prevented from position; connection with the train to controlling the circuit, a releasing means for the train adapted foroperatlon upon a very slight movement of the armature, and

the frictional engagement of said releasing means with. the train being comparatively slight.

14:. 1A. signaling train; signaling contacts operable thereby; a noninterference magnet; an armature therefor; disabling mechanism adapted. to render said contacts unresponsive to the running of the train when I 1n one position, and adapted to assume a second position rendering said contacts re-- sponsive to the running-of the train; operating means constantly tending to act to move said disabling mechanism to its said first named position; a connectionwith the train to move said operating means to a position where it will permitsaid disabling mechanism to move to its said second named position; and a determininglever adapted to hold said operating means in the position to which it may be moved by the train, and so governed by the armature that upon movement of said armature to retracted position the operating means will not be so held; the train operating to move the signaling contacts into position to be engaged by the disabling means, to be thereby prevented from controlling the circuit, a releasing means for the train adapted for oporation upon a very slight movement of the armature, and thefrictional engagement of said releasing means with th comparatively slight.

15. 'A. signaling train; signaling contacts operable thereby; a noninterference magnet; an armature therefor; disabling mechanism adapted to render said contacts unresp0ne train being sive to the running of the train when in one position, and adapted to assume a second position rendering said contacts responsive to the running of the train; operating meaxns constantly tending to act to move said disabling mechanism to its said first named move "said operating means to a position Where it Will permit said disz'zbling mechanism to move to its said second named position; and a determining lever adapted to hold said operating means in the position to which it may be moved by the train, and so governed by the armature that upon movement of said armature to; retracted position the operating means will not be so held I 16. A signaling train; signaling contacts operable thereby; a nonil'iterference magnet; an armature therefor; disabling mechanism adapted to render said contacts unresponsive to thegrunning of the train when in one position, and adapted to assume second position, rendering said contacts responsiveto the running of the train; oper ating means constantly tending to act 'to memes disabling mechanism is in its said; first named pos1t1on; and av dettmnnnng lever adapted to hold said operating means 111 the position Where it is acting at greatest advantage; said determining lever being adapted to be moved out of the path of the coon gaging part ofsaid operating means upon a comparatively slight retractive movement of said armature.

17. A signaling train; signaling contacts operable thereby; a noninterference -magnet; an armature therefor; disabling mechanism adapted to render said .contacts unresponsive to the running of the train when in one position, and adapted to assume a second. position rendering said contacts responsive to the running of the train; operating means constantly tending to act to move said disabling mechanism to its said first named positiom and so applied thereto as to act at substantially greater advantage When said-disabling mechanism is in its said second named position than when said dis abling mechanism is in its said first named position; and a determining lever adapted to hold said operating means in the position Where it is acting at greatest advantage, said determining lever being" adapted to be moved out of, the path of the coengaging part of said operating means upon a com paratively' slight retractive movement of ;r.

said armature, and to be moved by the operating means out of the path thereof While the armature is in attracted position.

18. A signaling train; a signal wheel I therefor; a circuit controlling contact ar ranged to be raised by the signal Wheel when the circuit is to be closed, and to be allowed to fall to open the circuit; a noninterference magI1et;'an armature therefor; and disa-- bling means controlled by said armature for moving said circuit controlling contact to a position above that to which it may be moved by said signal Wheel.

19. A signaling train; a signal Wheel therefor; a circuit opening contact arranged to be a raised by the signal wheel when the circuit is to be closed, and to be allowed to fall to open the circuit; acircuit closing contact arranged to be raised by the signal Wheel when the circuit has been opened, and to be alloWed to fall to close the circuit; a noninterference magnet; an armature therefor; and disabling means controlled bysaid armature for holding said circuit opening contact in engagement with said circuit closing contact in spite of the action of the signal Wheel upon said circuit closing contact.

20. Air-signaling train; signaling contacts 1,207,:aes

operable thereby; a noninterference magnet; an armature therelflr; disabling mechanism adapted to render said contacts unresponsive to the running of the train; a latch arm adapted to be cont-rolled by said armature, and adapted to move said disabling mechanism to disabling position; and an operating spring fOl'fSzlld latch arm so applied thereto that when said latch arm is in control of said armature the operative effect of said spring uponsaid latch arm will be applied thereto at only such advantage as to be capable of safely moving said latch arm against the friction of its pivot, and so that the operative effect of said spring will be applied to said latch arm when said latch arm has moved out of control of said armature at suchadvantage as to be capable of safely moving said'latch arm to operate the disabling mechanism.

, '21. A signaling train; signaling contacts operable thereby; a noninterference magnet; an armature therefor; disabling mechanism adapted to render saidcontacts unresponsive to the running of the train; a determining lever connected with said armature; a latch arm adapted to be latched'by said determining lever, and adapted to move said disabling mechanism to disabling position; and an operating spring for said latch arm so applied thereto that when said latch arm is in engagement with said determining lever the operative effect of said spring upon said latch arm will be applied thereto at only such advantage as to be capable of safely moving said latch arm against the friction of its pivot, and so that the operative effect of said spring will be applied to said latch arm when said latch arm has moved out of engagement'with said determining lever at such advantage as to be capable of safely moving said latch arm to operate the disabling mechanism.

22 A signaling train; signaling contacts operable thereby; a noninterference magnet; an armature therefor; disabling mechanism adapted to render said contacts unresponslve to the running of the tram; a

, determining lever connected with said armature; a latch arm adapted to be latched by said determining lever, ,and adapted to move'said disabling m chanism to disabling position; a connection withjthe train to move said latch arm to latching position; and an operating spring for said latch arm so applied thereto that when said latch arm is in engagement wi h said determining lever the operative effect of said spring upon said latch arm will beapplied thereto at only such advantage as to be capable of safely moving said latch arm against the friction of its pivot, and so that the operative efi'ect 0F said spring will be applied to said latch arm when said latch arnrjhas an armature therefor; a determining leverconnected with said armature; disabling means adapted to render said contacts unresponsive to the running of the train when in one position, and adapted to assume a second position rendering said contacts responsive to the running of the train; said disabling means comprising a latch arm and an actuating spring constantly tending to move said arm'in one direction, said latch arm being adapted to such coengagement with the determining lever that said arm may be caught and held when it has moved to the limit of its-travel in Opposition to such tendency when the determining lever is in a certain position, and whereby said coengagement will not occur at any other time, manual starting means for the train adapted'to move said latch arm into position to hold the determining lever, and further Incvable by the train to a position for lockingengagement with said lever.

'24. A signaling train;- signaling contacts operable thereby; a noninterference n 5- net; :an armature therefor; a determining lever connected with said armature; disabling means constantly tending to act to render said contacts unresponsive tothe running of thetrain when in one position, i

prevent movement of the determining lever,

and further movable by the train to move it into position for locking engagement with said lever.

25. A signaling train; signaling contacts operable thereby anoninterference magnet; an armature therefor; a determining lever yieldingly connected with said armature; disabling means constantly tending to act to render said contacts unresponsive to the running of the train when in one position,

.and adapted to assume a second position rendering said contacts -responsive to the running of the train; said disabling means comprising a latch arm having a hook so positioned with relation to the determining level; that a projection from said determining lever willlie' in the path of said hook when said lever is in one position, and will be Withdrawn from'the path of said'hook Whensaid lever islin another position; said book being so formed that When the deter mining lever is in positioii to be engaged by said hook and-the" latch arm is moved 'tocarry said hook past the coengaging portiltn of the determining lever in one direction t engagement between said hook and the deiiemnining lever will cause the coengaging portion of said lever to be moved out of the path ofsaid hook and movement of the latch arrnto carry said, hook past the coengaging portion ofthe determining lever in the other direction will be prevented; V j A signalingtrain, sign-ahng-contacts operable thereby, a non-interference ma net, an armature therefor, 'a determining lever connected with said armature, a holder adapted to render said contacts unresponsive :to the running of the train, a latch arm adapted to. be controlled by said determin mg lever and to be operated by the train, a cam operated bysaid latch arm andzadapted to engage the holder whereby the movement of thelatch arm inone direction may move the'holder to disablethe signaling-contacts,

permitting said holder to be retainedin dis abling position Without thereby disturbing the inovementof the latch arm. V

27. A signahngtrain, signaling-contacts operable thereby, a non-interference mags net, an armature therefor, a, deteflnining lever connected with said armature, a holder adapted to render said contacts unresponslve to the running of the train, a latch arm adapted'to be controlled by said determining-leverto be operated by the train, a cam operated by the latch arm and adapted to engage the holder whereby the latch arm'will not act to cause movement of .the' holder when moved from the, position whereit may be engaged by the determining-lever until it is moved .apredetermined distance fromsaid engaging position. i

28. A signaling'train, signaling contacts operable thereby, a noninterference magnet, on armature therefor, a holder adaptedto render said contacts unresponsive to the running of the train, a latch arm adapted to be controlled by saidarnia'ture, and a'cam face moving with the latch arm for imparting movement to said holder in one direction when the latch arm is rnoving away from the position Where-it may be controlled by said armature, thereby to holdthe signaling contacts out of the control of the signal Wheel. v

2!). A signaling train; a signal 'Wheel therefor; a signaling lever operable byv said signal Wheel; a nrminterference magnet; an armature therefor; a holder controlledby said arrnattne adapted to rendersaid signeoms se naling lever unresponsive to g 4 I Wheel; said holder having a shoulder, and a catch arm pivoted on the signaling lever, the

free end of which is adapted to engage with the signal Wheel and the catch of Whichis adapted to engage the j shoulder on the said signal holder when said holder is in disabling posi-. tion, thereby to hold the signaling contacts I in unresponsive position.-

30. A signaling train; a signal Wheel therefor; a signaling lever operable by said, signal Wheel; a noninterference magnet; an

armature therefor; a holder controlled by.

"said arrnature adapted to render said signaling lever unresponsive to said signal Wheel;

i hold the signaling-contacts in unresponsive position and an operating spring so applied to'said catch arm as to tend toinaintain the signaling lever and the-free end of the catch arm in engagement with the signal Wheel,

31. A signaling train; a signal Wheel therefor; a signaling lever operable by said signal Wheel; a noninterference magnet; an armature therefor; a holder controlled by said armature adapted to render said signaling lever unresponsive to said signal Wheel; a, catch arm pivoted on the signaling lever, the free end of which isadapted to" engage With thesignal Wheel and thecatch of which is adapted to engage the'e'dge of the holder When said holder is in disabling position; thereby to, hold the, signaling contacts, in

spring connected to the catch arm at such a point thatthe pivot of said armis at one side thereof and the catch and the end for unresponsive position, and an operating ti l engaging the signal heel are at the other side thereof. 7 y

32. A signaling train; a signal Wheel therefor; a signaling lever bperable by said signalivheel; a noninterference magnet; an armature therefor; a holder controlled by said armature adapted to render said signaling lever unresponsive to said signal Wheel; a catch arm .pirioted on the signaling lever,

the free end of whichisadapted to engage with the signal Wheel, and the catch (if Which is adapted to engage the edge of the holder when said holder is in disabling position; thereby to hold the signalingcontacts in unresponsive position and an'rnoerating spring so applied to said catch arm that either the end of said arin resting upon said signal Wheel or the catch may act as a fill crnrn around which said-arm may be rocked by said spring to hold the signaling lever in engagelnentivith the signal Wheel.

33. A signaling train; a signal Wheel therefor; a circuit controlling contact ar llle tact.

ranged to be raised by the signal wheel when the circuit is to be closed, and to be allowed to fall to open the circuit; a noninterit'erence magnet; an armature therefor; disabling means controlled by said armature for raising said circuit controlling contact to a position above that to which it maybe raised by said signal wheel and adapted to assume a second position where it will release said circuit controlling contact; and means operable by thetrain whereby the movement. of the disabling means from its said first named position to its said second named position will be permitted only when. the signal wheel is in position to support the circuit controlling contact in elevated position. I

34. A signaling train; a signal wheel' therefor; a circuitopening contact arranged to be raised by the signal wheel when the circuit is to be closed, and to be allowed to fall to open the circuit; a circuit closing contact arranged to be raised by the signal wheel when the circuit has been opened, and to be allowed to fall to close the circuit; said contacts being so arranged that the circuit open iug contact will not be sufiiciently raised by the signal wheel to establish a connection with the circuit closing contact 'when said circuit closing contact has been raised to the limit of the travel which may be imparted thereto by said signal wheel; a noninterferencemagnet; an armature therefor; disabling means controlled by said armature for raising said circuit opening contact to a position above that to which it may be raised by said signal wheel and adapted to assume a second position Where it will release said circuit opening contact; and means operable by the train whereby the movementof the disabling means from its said first named position to its said second named position will be permitted only when the signal wheel is" in position to support the circuit opening contact and permits the'circuit closing cor.- tact to connect with said circuit opening con- A signaling train; therefor; a circuit opening contact arranged to be raised by the signal wheel when the circuit is to be closed, and to be allowed to fall to open the circuit; a circuit closing" contact arranged to be raised by the signal wheel when the circuit has been opened, and to be allowed to fall to close the circuit; said contacts being so arranged that the circuit opening contact will not be sufficiently raised by the signal wheel to establish a connection with the circuit closing contact when said circuit closing contact has been raised to the limit of the tra'i'el which may be imparted thereto by said signal wheel;

a noninterference magnet; an armature therefor; disabling means controlled by said armature for raising said circuit opening a signal wheel contact to a position where it will hold said circuit closing contact above the position to' by the movement of the disabling means from its said first named position to its said second named position will be permitted only when the signal wheel is in position to support the circuit opening contact and permits the circuit closing contact to connect with said circuit opening contact.

36. A signaling train; a signal Wheel therefor; a circuit opening contact arranged to be raised by the signal wheel when the circuit is to be closed, and to be allowed to fall to open the circuit; a. circuit closing contact arranged to be raised by the signal wheel when the circuit has been opened, and to be allowed to fall to closethe circuit; said contacts being so arranged that the circuit:

opening contactwill not be sufficiently raised by the signal wheel to establish a connection with the circuit closing contact when said circuit closing contact has been raised to the limit of the travel which may be impartedthereto by said signal wheel; a nonintert'erence magnet; an armature therefor; and disabling means controlled by said armature for raising said circuit opening contact to a position where it will hold said circuit closing contact above the position-to which it may be raised by said signal wheel while said disabling means is inone position, and for holding said circuit opening contact against such movement as will enable it to retain connection with the circuit closi g contact when said circuit closing contact has been raised to the limit of the travel which may be imparted thereto by said signal wheel while said disabling means is in another position.

37. A signaling train; a signal wheel therefor; a circuit opening contact arranged to be raised-by the signal wheel when the circuit is to be closed, and to be allowed to fall to open the circuit; a circuit closing to the limit of the travel which may be im-. parted thereto by said signal wheel; a non interference magnet; an armature therefor; disabling means controlled by said arniature for raising said circuit opening contact to a position where it will hold said circuit closing contactabove the position to which it may be raised by said signal Wheel While said disabling means is in rmeposition. and for holding said circuit opening contact against such movement as Will enable it to retain 'connection with the circuit closing contact when said circuit closing contact has been raised to the limit of the travel which may be imparted thereto by said signal wheel While said disabling means is in another position; and means operable by the train whereby the movement of the disabling means from its said first named positionto' its said second named position will be permitted only when the signal Wheel is in position to support the circuit opening contact and permits the circuit closing con,- tact to connect With said circuit opening contact. I y

38. A signaling train, a noninterference magnet, an armature therefor, manually disengageable stopping mechanism for the train,

restoring lever controlled-by the stopping mechanism, and a detent for the train connected to the a ii'mature and so pivoted to said restoring lever ,that when the stopping mechanism is in one position said detent will act upon each retraction of the armature to suspend the running of the train and when .the stopping mechanism is in another posi tion said detent will be rendered ineffective.

39. A signaling train; signaling contacts operable thereby, a noninterifercnce magnet, an armature therefor, disabling mechanism adapted to render said contacts unresponsive to the rimming of the train a latch arm controlled by said armature and adapted to more said disabling methanism to disabling position, manually disenga'geable stopping mechanism for the train, a restoring lever controlled by the stopping mechanism, and a pivot for the latch arm mounted upon said restoring lever in such position that when the stopping mechanism is in position to stop the train the disabling mechanism will he moved to disabling position regardless of the position. of the latch arm.

4.0. A. signalingtrain; signaling contacts operable thereby; a noninterference magnet; an armature therefor; disabling mechanism adapted to render said contacts unresponsive to the running of the train when in one position, and adapted to assume a second posi tion rendering said contacts responsive to the running of thh train; operating means controlled by said armature constantly tending to act to move said disabling mechanism to ltssaid first named position; manually disengageable stopping mechanism for the train: a restoring'lever controlled by the stopping mechanism; a connection operated then-Irv For moving the disabling mechanism to its said first named position independent oi the release of said operatingmeans; and an arm moving W1th the stopping mechaan armature tl'iereitor'j spring actuated dis abling means constantly tending. to act to rendersuid contacts unresponsive tothe running of" the train; the actuating spring for said means being connected at one end with said means, and at the other end with the armature to serve as a retractile means therefor, and being arranged 'to' be applied thereto with varying force so as to apply a substantially greater retractile force to said armature just prior to the initiation of a signal than the retractile force applied to said armature during the transmission of any signal. v

42., A signaling train; signaling contacts operable thereby; a noninterference magnet; an armature therefor; spring actuated disabling means constantly tending to act torender said contacts unresponsive to the running of the train; the actuating spring of said means being connected at one end with said means, and at the other end With the armature to also serve as retractile means therefor, and being so controlled by the dis abling means as to apply a substantially greater retractile force to said ari'na'ture ust prior to the initiation of a signal than the retractile force applied to said armatureduring the transmission of any signal.

43. A signaling train; signaling contacts operable thereby; a nonmtert'erence magnet; an armature therefor; disabling means adapted to render said contacts unresponsive to the running of the train when in one positionyand adapted to assumea second position rendering said contacts responsive to the running of the train; a connection with the train to move said disabling means to its said second named position; a determinmg lever adapted to hold said disabling 'meansin the position to which it may be moved by the train, and'so governed by the armature that upon movement of said armature to retracted position the disabling means will not be so held and means tending to keep said determining lever in thepa th o'f the part of the disabling means adapted to engage therewith while the arma- J20.v ture is in attracted position, whereby the tion rendering said contacts responsive to the running of the train; operating means constantly tending to move said disabling mechanism to its said first named position; a connection with the train to move said operating means to a position where it will. permit said disabling mechanism to move,

to its said second named position; a determining lever adapted to hold said operating means in the position to which it may be moved by the train, and ,so governed by the armature that upon movement of said armature to retracted position the operating means will not be so held; and means tending to keep said determining lever in the path of the part of the operating means adapted to engage therewith while the armature is in attracted position, whereby the retractile force applied to said armature will be materially increased when the operating means is being so moved by the train.

45. A signaling train; signaling contactsoperable thereby; a nonmterference magnet; an armature therefor; disabling mechanism adapted to render said contacts unresponsive to the running of the train when in one position, and adapted to assume a second position rendering said contacts responsive to the running of-the train;'operat1ng means governed by said armature and constantly tending to move said disabling mechanism to its said first named position; a connection with the train to move said operating means to a position where it will permit said disabling mechanism to move named position; and a retractile spring for said armature adapted to be so influenced by said operatin means that the retractile ttorce applied to sa d armature will be materially decreased when the operating means has been so moved by the train.

In witness whereof, we have hereunto subscribed our names this 18th day of February, A. D., 1915. i a

C. E. BEACH.

. L. J.- VOORHEES.

' Witnesses:

H. F. Homes, EQH. DUFFY- to its said segqnd

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