US1575947A - Starting attachment for signal transmitters - Google Patents

Description

Mal ch 9 1926.

N. H. SUREN STARTING ATTACHMENT FOR -SIGNAL TRANSMITTERS Filed Jt lly 8, 1921 3 Sheets-Sheet 1 March 9 1926.

N. HQ SUREN STARTING ATTACHMENT FOR SIGNAL TRANSMITTERS Filed July 8, 1921 5 Sheets-Sheet 2 p w w Nev/77a M Jan?!) FIG. 6

ATTORNEY March 9 1926.

1,575,947 N. H. SUREN STARTING ATTACHMENT FOR SIGNAL TRANSMITTERS Filed July s 1921 3 Sheets-Sheet :3

IIIIIIIIIH INVENTOR Nathan )1. Suren BY6M.

ATTORNEY Patented Mar. 9, 1926.

UNITED STATESPATENT oFFicE.

NATHAN H. SURE-N, 0F NEEDI-IAM, MASSACHUSETTS, ASSIGNOLR, BY MESNIX AS- SIGNMENTS, TO THE GAME'WELL COMPANY, OF NEWTON, MASSACHUSETTS, A COR- PORATION OF MASSACHUSETTS;

STARTING ATTACHMENT FOR SIGNAL TRANSMITTERS.

Application filed July 8, 1921. Serial No. 483,222.

ranged to act to trip its associated trans-.

mitter in responseto actuation of a distant initiating station, and to be thereupon ren- I dered unresponsive to further actuation of any such distant station until such attachment has been manually reset or restored This invention is in the nature of an improvement: upon the transmitter starting attachment disclosed by my co-pendmg apphe cation filed April 4th, 1919, Serial No. 287,- 502, Patent No. 1,503,439, issued July 29th, 1924.

An object locking means for an indicator associated. with such anattachment whereby such indi: oator will be looked against accidental. displacement such as would cause a false set or restored indication, and whereby such indicator will be automatically restored to normal position when the restoring member has been fully actuated and the starting attachment is ready foraction.

Another object is to provide locking means whereby such an attachment may be partially. restored for the purpose of disclosingthe condition of the controlling circuitthereof, without causing the formulation of any signal in the associated main line circuit in the event that such controlling circuit is abnormally conditioned.

Another object is to provide associated means whereby such a starting attachment will not act. in response to its controlling circuit (other than for the purpose of indicating the condition of said circuit) unless the motive power of said attachment is adjusted to cause a complete operative cycle thereof.

A further object is to provide means of'this invention is to provide whereby continued abnormal conditioning of the auxiliary loop will result in the formulation by such an attachment of a signal in the main line circuit, which signal will be of such a character as to cause response of main line signalmanifesting devices distinctive both from that whichre sults from a broken mam hne circuit and that which results from actuation of a main line transmitter- Still other objects, together with their in-' herent advantages, will be in part obvious and in part specifically set forth in the fol lowingspecification and more fully pointed out, in the claims.

For the purpose of illustrating the various features of this invention, one specific embodiment thereof is shown by the annexed drawings and hereinafter more fully. de-

scribed, but. it will be understood that this invention is adapted for other embodiments 7 within the scope of the appended claims.

S milar reference characters denote like parts throughoutthe accompanying drawings, in which Figure l is a diagrammatic representa-,

tion .of a signaling circuit including fire alarm boxes of a conventional type, and

showing, in detail, the actuating mechanism of a distant auxiliary, initiating station and the electrical connections between" a group ofsuch stations and circuitcon.

trolling and responsive parts of anauxiliarized fire alarm master boX controlled thereby and constructed in accordance. with this invention;

Fig. 2 isa fragmentaryview of the mag-.

net and certain of the contacts of the starting attachment of Fig. 1, together with certain ofthe parts associated therewith;

Fig. 3 is a fragmentary view of the re; 7

maining starting attachment contacts of Fig. 1, together with associated operating mechanism therefor; Fig. 4 is a. right side elevation of the magnet and mechanism provided for. the actuation of the starting attachment contacts shown in 'Fig. 1, portions of certain z parts being brokenaway and shown in sech tion for the purpose of more clearly disclosing the construction said'attachment;

and arrangement of,

Fig. 5 is a rear view of certain of the parts of Fig. 4, showing the normal positions thereof and their relation to the parts shown in Fig. 3;

Figs. 6, 7 and 8 are views of certain of theparts shownin Fig. 5 taken at various operative stages thereof. t

Fig. 9 is a sectional view of certain of the parts of Fig. 8, taken on a line disposed at right angles to the" pin 160 of Fig. 8; and

Fig. 10 is a view showing certain of the parts of Figs. 3 and 8, and also illustrating an alternative terred to.

Referring to Fig. 1; the battery A, bell B, register 0, and typical fire alarm boxes I), E and F are serially connected in the main line circuit comprising the conductors 21, 22, 23, 24, and 26; thus representing a typical municipal fire alarm circuit.

The box or transmitting station F is provided with terminals 27, 28 and 29; the conductor 23 being connected to the terminal 29, and the conductor 24 being connected to the terminal 27. n

An auxiliary station loop comprising the conductors 30, 31, 32, 33and 34 is connected to the terminals 28 and 29 and serially connects the auxiliarysignal initiating stations G l-I, I and J, the mechanism of which stations are identical; hence the disclosureof the mechanism of the station H is believed to suliicetor all of such stations. The mechanism, of each of said auxiliary stations comprises an arm 35, pivoted at 36, and the outer end of which is arranged to cooperate with the contact buttons37, 38 and 39.; the f 7 spring 40 being so applied to saidarm 35 as to tend to swing the free end thereof inis so: positioned that when the arm 35 is brought into engagement therewith saidv said arm from movement in response to the.

spring 40.. A push rod 45 connects with the latcli42, and an end" of said rod projects through a wall of the case 46 for the purpose ofiacilitating manual actuation of said latch for the disengagement thereof from the pin 44.

V A dashpot 47 is mounted below the arm 35, one member of said dashpot being secured to said arm and the other member of said dashpot beingsecured to the case46 or other stationary part of the station H.

A corresponding auxiliary loop comprising the conductors 30', 32, 33 and 34 and including the stations G', I and J is.

shown similarly connected tothe transmitting box D. 1

n The main line code signal transmitter of arrangement to be re-.

to engagement with the stop 41, which stop station F comprises a code Wheel 50, a sig-v naling lever 51 engaging said code wheel, signaling contacts 52 controlled by said lever, a non-interference magnet 53, and a controlling lever 54 one end of which carries the armature 55 which cooperates with I said non-interference magnet 53 andthe other end of which cooperates withthe signaling lever 51 so as to afford awell known type of non-interference. Suitable propelling mechanism (not shown) is provided for theactuation of the code wheel 50, which propelling mechanism may be of any well known type of normally wound fire. alarm box clockwork, andincludes means for controlling the running of such clockwork, such of swinging the detent 57 out of engage ment with the track 56.. as hereinafter more fully explained.

The main line code signal transmitter ust described is mounted in an inner round case 61, which is contained in the outer case 61 of the .transmittingbox F. Said outer case also contains a starting. attachment comprising the parts indicated by Figs. 2, 3, 4 and 5; however, inthe interests of "clearness, Fig. 1 merely illustrates diagram maticallythe tripping magnet 62, the starting attachment contact-s 63.164, 65'and 66 and the indicator"plate 67, all of which parts are shown ina larger scale and in connection with other parts of. said attach ment, in other figures of the drawings.

The conductor 68 extends from'the ter ing of said magnet 53*to one member of thesignaling contacts 52; the conductor 70 1'05 minal 27 to one end of the winding of the extends from the other member ofthe sig naling contacts 52 to the starting attachment contact 63; the conductor connects the contacts 64 and 66tothe terminal 28; the

conductor 72 connects the contact65 to the terminal 29; the conductor 7 3"connects one end of the winding of the electromagnet 62 to theconductor: 71; and the conductor'74 connects theotherend of said winding to the conductor 72. Referring now more par-1' ticularly to Fig. 2: the lever 80 is loosely journaled on the shaft 81. The insulating pin 82 is mounted in the free end of said lever 80, so that, when the said lever is normally positioned (as indicated by solid lines in Fig. 2)"said pin 82 will engage can:

tact 65 and lift said contact away from the contact 66 for a purpose which will be'hereinafter more fully explained.

One end-of the spring'83 i'ssecuredto the' pin .841 carried by the lever 80, and the other end of said spring is secured to the abutment plate. 85 at 86, so that said spring will con stantly urge said lever toward the abnormal position thereof, as'indicated by dotted lines in Fig. 2. The upper edge of the abutmentplate 85 serves as a stop for themovement of the lever 80 in response to the spring 83.

Referring now more particularly to Fig. 3: the lever 90 is fixed upon the shaft 91, and said lever carries near the free end thereof an insulating pin 92 which is so positioned with relation to the projection 93 depending from the contact 63 that, when the shaft 91 is suitably rotated, the pin 92 will be moved past said projection 93 and will thereby momentarily move the contact 63 away from the contact 641 for a purpose which will be hereinafter more fully explained.

Referring now more particularly to Fig. t: the main shaft 100 is provided with a squared end 101 adapted for engagement by a winding key or other suitable setting member, said shaft being journaled in the frame plates 102 and 103. A boss 1041- is fixed. upon the shaft 100, and the inner end of a main spring 105 is secured to said boss. The notcheddisk 106 (see also Figs. 2 and 3) is fixed upon the shaft 100 in. suitable relation to a dog 107, so that the free end of said dog may engage a wall ofa notch provided in said'disk for the purpose of serving as a holder for retaining energy stored in the spring 105 by the rotation of the shaft 100.

' The dog 107 is loosely'journaled upon the shaft 91, andsaid dog carries'an arm 108 which projects into the path of the pin 8 1,

so that when the shaft 100 is rotated so as 'to force the free end of the dog 107 out of the notch in the disk 106, said end 108- will be brought into engagement with said pin 84 and thereby swing the arm 80 toward its normal position. A cam faced arm 109 is also loosely jonrnaled upon the shaft 91; the outer end of said arm is normally supported by the pin110 carried by the arm 80, and a slot is provided near the free end of said arm for receiving said pin 110 when the lever 80 is in its normal position.

The disk 106 is so formed that, when moved from its normal position, the rise thereof which engages the free end of the dog 107 will quickly move said dog away from the shaft 100 far enough to cause the arm 108 to act through the pin 84 to swing the lever 80 into engagement with the contact 65, and thereby move said contact away from the contact 66; but insufficiently to bring the pin 110 into register with the slotprovided therefor in' the arm' 109. 'The periphery of the disk 106, from the outer end;

)f the rise jnstdescribed to a point adjacent to the holding face of the notch' in said face, is substantially concentric with the shaft "100; and a further rise is provided in the plai ned.

dog 107 during clockwise rotation of the shaft 100.

A spring 111" is provided for holding the free end of the arm 109 in engagement with the pin 110 and for holding the free end of the dog 107 in engagement with the disk 106; one end of said spring 111 is secured to the pin 112 which iscarried by the arm 109, and the other end of said spring is secured to the pin 113 which is carried by the arm 108 which moves with the. dog 107.

A. shield .114 is carried by the lever 80 and is of such form that, when said lever is normally positioned, said. shield will cover a part of the legend of the indicator plate 67 and "so that when said arm is abnormally positioned said shield will. not cover any part of said legend.

A flexible latch 115 is'secured to the dog 107; the outer end. of said latch is so formed that when said dog is normally positioned said end will be disposed in the path of the pin 116 carried by the arm 80, so as to pre- I vent movement of said arm from the abnormal to normal position thereof, and so that,

when the dog 107has been forced out of the notch in'the disk 106, such end'of the latch 115 will be swung. downwardly and will thereby permit the lever 80to be moved from its abnormal to its normal position.-

The upper edge of the portion of the latchv 115 with which the pin 116 is normally engaged is flared inwardly (as best shown in Fig. 4-) so that said latch will be sprung rearwardly by the pin 116 when the free end of the dog 107 moves into the notch in the disk 106 while the lever 80 is in its normal position.

The drum 117 is loosely journaled upon the shaft and encloses the boss 10 1 and the main spring 105, the outer end of the main spring being attached to said drum at 118. A portion of the periphery of the drum 117 has the gear teeth 119 formed there. in; the cam 120 is carried by the front face of said drum, and the track 121 and wedge shaped block 122 are carried by the rear side of saiddrnm. The cam 120 is of such width that it projects into the path of the lever 90 (as best shown by Fig. 4) 'so that said cam may act, at certain times,tomove said lever toward the normal. position thereof, as will be The lever 123 (see Fig. 3) is loosely jonr naled on the shaft 81, and the free end of hereinafter more fully exsaid lever projects into the path of the cam 120 for actuation thereby. One end of the spring 125 is secured to the lever-I123 at 125, and the other end of said spring is secured to the abutment 85 at 87, so that said spring constantly urges the free end of the lever 123 towardthe cam 120.

The pin 130 (see Fig. 3) is carried by the lever 123 and is so positioned thereon with relation to the shouldered ternnnal 131 carried by the link 60 that, if said terminal in the path of SillClyilIl when the rise of the cam 120 swings the lever 123 against the tension of the spring 125,said pin 130. will thrust the link 59 to theleft and thereby swing the detent 57 out of engagement with the'track 56. A spring 132 is so applied to the link 60 as to tend to hold the terminal 131 in engagement with the pin 130 and thereby maintainthe driving shoulder of said terminalin the path of said pin.

The pin 130 projects into the path of the hook arm 109 (see Fig. 2) so that, whenever. the cam 1.20 swings the lever 123 against the tension of the spring 125, the pin 130 will actagainstthe slanting face of the arm 109 to swing said arm upwardly so as torelease the pin- 110 therefrom and thus permit the lever 80 to be swungto its abnormal positionby the spring 83. 7

Referring now more particularly to Fig. 5; the pinion 133 is mounted upon a shaft 134 for engagement by the gear teeth 119 of T the drum 117. The escapement wheel 135 is also Fig. 4).

is adapted, when 111 one posltion, to engage also mounted upon the shaft 134 and moves with said pinion-133. m

The escapement pallet 136 and the pendulum137 are fixed upon the shaft 138 for regulating the speed of rotation of the wheel spring 142 is so applied to thepiece 139 as.

to tend to swing the end 140 into the path of the pin 141.

A lever 143 is fixed upon the shaft 91 (see The arm 145 of said lever 143 the pin 146 carried by the piece 139 so as to prevent movement of the end 140 of said pieceout of the path of the pin 141, and when in another position to withdraw said arm 145 from the path of said pin 146 .so

as to permit the end 140 to move out of the the path of the pin 141. i

A spring 147 is-so applied to the lever 143 as to tend to swing the arm 145 into the path of the pin 146. The arm 1430f the lever 143 carries a lug149; whichlug is disposed in the plane of the track 121 and the block 122 for cooperationtherewith ina manner which will be hereinafter more fully ex plained. The arm 150 is also fixed upon the shaft 91, and the free end of said arm extends into the path of the rocker bar 151..

The electromagnet 62 comprises cores having the extended pole pieces 152, 152. armature 153is fixed upon one end of the rocker shaft 154 and the rocker bar 151 is fixed upon theother end of said shaft. The

respective ends of the armature 153 are pre sented to opposite sides of the pole pieces 152, 152, so that the pull imparted to said armature incident to the energization of the magnet 62 will act through the shaft 154 to swing an end of the rocker bar 151 toward the arm 150. A spring 155 is so applied to the rocker bar 151 as to tendto sw ng the coengaglng end of said bar away from the arm 150. i

The face ofthe arm 150 which nearest The to the track 121 is extended above the shaft 91, so as to forn'r an ear 156; said ear extends adjacent to the path of the pin 157' winch is carried by the drum 117, so that said car may be engaged by said pin for a purpose which will be hereinafter more ful ly explained.

The pin 157 is so positionedwith relation to the notch 158 which is formed in the track 121 that when, during the rotation of'thew drum 117, said notch is first presented to the lug 149, said pini157will engage the ear 156 and swing the arm 150 and parts moving therewith so as to carry the arm 145 into the path of the pin 146; thereby swinging the lug 149 outwardly through the notch 158 and causing the free end of the arm 150 to i 3 154 to swing the ends of the armature153 act through the rocker arm151 and shaft away from the pole pieces 152, 152.

The formation and arrangement of the car 156, the pm 157, the end 140 and the pm 141 wlth relation to theoperating ratio between the drum 117 and thepinion 133.

is such that said pin 141 will not be in position to engage the end 140 while the pin 157 1s in position toengage the ear 156; and such'that, immediately after said pin 157 has moved out of the path of the ear 156,

the pin 141 will reach the position where" 1t may be engaged by the end 140.

The dog 159 isloosely journaledupon the l shaft 100, "and the free end of said dog extends into the path of the block 122 carried by the drum 117 A pin 160 is fixed in the shaft 100, and extends through slots inthe boss-of the dog 159 s0 as to permit said dogto rotate aroundsaid shaft an angular distance somewhat greater than the angle subtended by the outer face; of the block 122 plusthat subtended by the portion of the d0g159 disposed in the path of saidpblock, .to the end. that slightlymore than one complete revolutionmay be imparted to the shaft 100 without rotating the drum 117.

The segmental piece 161 is loosely journaled upon the boss of the dog 159, being held in place thereon by the pin 160. Apin 162 is carried by the piece 161, and said pin projects into thepath of the dog 159 for the purpose of suitably limiting the rotative movement of said piece with relation to said dog. A spring 163 (see Fig. 6) is connected between the dog 159 and the piece 161 so as to tend to turn said piece counterclockwise in relation to said dog and thereby maintain said pin 162 in engagement with a side of said dog.

A projection 164 carried by the arm 148 is so situatedwith relation to the circumferential face of the piece 161 that, when the lug 149 is inside of the track 121 and the arm'145 is out of the path of the pin 146, said projection will be disposed in the path of said piece 161; and so that when the circumferential face of said piece is in terposed between said projection 164 and the shaft 100 the lever 143 will be held against such movement as would Withdraw the arm 145 from the path of the pin 146.

The ear 94 moves with the lever 90, (see Fig. 3) and is sopositioned with relation to the link 60 that, when said lever is nor mally positioned, the shoulder of the terminal 131 may be so positioned as to be disposed in the pathof movement of the pin 13( and so that, when said lever is so abnormally positioned as to bring the pin' into engagement with the projection 93,

said ear 94 will swing the link 60 downwardly against the tension of the spring 132 so as to carry the shoulder of the terminal 131 out of the path of the pin 130. From the foregoing it will be apparent that the lever 143 and the parts moving therewith constitute a controlling member which, in cooperation with a retarded operated member comprising the drum 117 and parts carried thereby, provide a determinining device; that such controlling member is governed by the tripping magnet 62 for the purpose of initiating the operating cycle of this attachment; that said retarded operated member is arranged to engage said controlling member to cause actuation of the code signal formulating means only when said controlling member is abnormally positioned at the termination of a predetermined period starting with the initiation of such an operating cycle and measured by the running of the drum 117 and the parts moving therewith, the duration of which period substantially exceeds that of a shunt loop break incident to the actuation of any auxiliary station, such as the stations G, H, I and J; and that starting of the transmitter will be caused by the disengagement of the then through the normal path as follows I from one terminal of battery A, through conductor 21-, bell B, conductor 22, register C, and conductor 23 to the terminal 29 of transmitting station F. From terminal 29 to conductor 71 of said transmitting station, two parallel pathsare provided asfollows:(1 through conductor 30,"pivot 36,

arm 35, and button 37 to'conductor 31 at auxiliary station H, thence through conductors 31, 32 and 33 and similarly through corresponding parts of auxiliary stations J I and G, through conductor-'34, and terminal 28 to conductor 71' of transmitting stationF; (2) through a portion of conductor 7 2, through conductor 74, the wind ing'of' the tripping magnet 62 and conductor 73 to said conductor 71-. From the junction of conductors 71 and 73 the current path from the battery A continues through the remainder of conductor 71, to and through contacts 64 and 63, through conductor 70, contacts 52, conductor 69, winding of electromagnet-53, and conductor 68, to terminal 27 of transmitting station F; thence through conductors 24 and'25 and correspondingly through transmitting stations E and D, and'through conductor 26 to the other terminal ofthe battery A. It will be'noted that the current path between terininal 29 and conductor 71 of station F which includes the winding of the electromagnet 62 has a resistance many times that the current path which includes the auxiliary stations H, J, I and G; itis therei for evident that nearly all of the current flow from the battery A will pass through I said auxiliary stations, and that the current,

flow through the winding ofthe magnet 62 will be of negligible volume, and said magnet will therefore not be efi'ectively energized. a

The operation of the embodiment of this invention which is shown by the accompanying drawings is as follows :when it is desired to cause the transmitting station F to act to formulate the code signal of itswheel 50, the push rod 45 of any one'of the auxiliary stations G, H, I or J should be actuated.- Assuming, for the sake of illustration, that the push rod 45 of station H isrso actuated as to disengage the latch 42 from the pin 44; it is evident that the switch arm 35 will be moved by the spring40 out of engagement with the button 37, over the buttons38 and 39, and into engagement with the arm will beappreciably retarded by the dashpot 47. i v When said armhas moved out of engagement with the button 37 and has not yet moved into enga 'ement with the button, j

, bring the pm 130 into engagement with the 39, it is evident that t e current path through the auxiliary stations G, H, I and J will be interrupted; thus restricting the entire current flow of the battery A through the wind- 7 of the tripping magnetv62 and thereby 1n V effgctively energizing said magnet.

Upon such effective energization of the Vmagnet' 62, the armature 153 will be attracted thereby so as to act through the shaft 154 tocarry an end of the bar 151 (seevFigs. 4 and5), into engagement with the arm 150, and thereby swing the arm 145' out of the path of the pin-146; whereupon the pressure of, the pin 141 against the end 140 will swingsaid end out of the path of saidupin and thus permit the escapement wheel 135 and the parts moving therewith to "start. It will be notedthat the pin 146 is normally pressing against the end of the arm 145 so that when said arm is moved out of l the path of said pin, as just described, said pin will immediately move into the path of said arm and thereby prevent said pinfrom beingso reengaged by said arm as to move in the path of the pin 141. V i a Although the interruption of thelshunt current path around the winding of the ,electromagnet 62 incidentalto the move- -men t of the switch arm 35 is of very short duration, it isoffsufficient duratlon to insure effective energization of said magnet 62, so that the mm 145 will be momentarily withdrawn from the path of thepin 146, and at .least one revolution ofthe escapement wheel 3 135 will thus be assured. During such revo- ,lution of the escapement wheel 135, abeveled end ofthe track 121 will pass outside of the ,lug 149, so as'to act through said lug to i hold the arm 145 in such position that the 7 free end of saidarm will be out of the path of the pin 146, and will thus prevent said arm from engaging said pin to arrest the running of the starting attachment until the notch 158 is again presented to the lug 149.

Inasmuch as the magnet 62 will be de energized, because of the reestablishment of the shunt circuit through the auxiliary stations immediately after the release of the starting attachment, as just described, it is evident that the armature 153 will not oppose the pull of the spring 155, and the bar 151 will therefore swing-out of engagement with the free end of the arm 150, thus per- ,mitting the spring 147 to swing the arm 148 so as to'brin'g the lug 149 into engagement with'the 1 inner face of the track 121; to the end that, during ensuing rotation of the shoulder of the terminal 131, and thereby so thrust the link asto swing the detent 57 out of engagement with the track 56 .so as to release the main line code signal transmitter.

The movement imparted to the lever 123v (see Fig. 3), as just described, will also cause the pin 130 to engage the slanting face of the hookarm 109 (see Fig. 2) so as .to disengage said arm from the pin 110;,whereupon the lever 80 will out of the path of theycontact 65 and carry the shield 114 away fromthe indicator; plate 67 so as tofully expose the legend Not set When the pin82'is moved out of the patli of the contact 65, as just described, said oontact will move into engagement with contact 66 and thus establish a short circuit around the winding of theelectromagnet 62 as follows,,from conductor 7 4 which connects v with one end of the winding of said magnet, through partof conductor 72 to contact 65, thence through said contact and, through contact 66 to contact 64, through a partlof conductor 71 and through conductor. 73

which connectsthe other-end of the winding of said magnet. Theresistance of said ,magnetwill therefore be excluded from the ,initter,las just described, the continued rotation of the, drum 1117 will withdraw the rise of .saidcam from the'path of the lever 123 and willthus permit said lever to return to its normal position in response to the pull of the spring125, and the detent 57 will be moved-into engagement with the track 56bythevtension of the spring 75 so as to be in positionto arrest therunning. of the transmitter as soon as said mechanism has acted to formulate the intended code signal impulses in the mainline circuit.

Referring now to Fig. 5:;it will be seen that, when the parts therein shown are-non mally positioned, the block 122 is situated in advance of (above) the dog 159., After the drum 117 has turned around the shaft 100 for nearly one revolution, it, is evident that the block 122 will approach the rear side of the dog 159 and swing saiddog counterclockwise, thus stretchingthespring 163 0 as to urge the piece 161 into engagement swing in response to v the spring 83 and thereby carry the pin 82 with the projection 164 as shown by Fig. 7; it is therefore evident that when the projection 164 is withdrawn from the path'of said piece 161, the circumferential face of said piece will pass between said projection and the shaft 100 so as to maintain said projection in normal position, as shown in Fig. 8.

As the trailing end of the track 121 is withdrawn from the path of the lug 149, the pin 1.57 will engage the ear 156 and thus cooperate with the spring 147 in swinging the arm 148 so as to carry the projection 164 out of the path of the segmental piece 161 and so as to move the arm 145 into the path of the pin 146. The engagement of the pin 157 with the ear 156 will occur just after the escapement wheel 135 has'carried the pin 141 to the right of the end 140, and said pm 157 will move out of the path of the ear 156 just before said escapement wheel has'carried saidpin 141 intoposition to again engage the end 140. p

From the foregoing it will be seen that, regardless of the effectiveness of theshort circuit through contacts and 66 or of the shunt circuit through the stations G, H, I and J, the rotation of the drum 117 will be positively arrested at the end of one revoluti'on thereof, and that said drum will there after remain locked until the shaft has been rotated for the purpose of rewinding the main spring 105. w

During the running of the main line transmitter, each revolution of the code wheel 50 will cause intended response of the bell Band register C; and, after the intended number ofrotationsof said code wheel, the detent 57 will reengage thetrack 56 and thus bring said transmitter to rest.

lVhen it is desired. to restore the various parts to their normal position after operating as justdescribed,the switch arm 35- of the actuated auxiliary station should be raised to its normal position, so that the pin '44will be reengaged by the latch '42; and a winding key or other suitable restoring device should be applied to the squared end 101, and the shaft 100 rotated until its move nent is arrested as hereinafter more fully explained. I

llpon rotating the shaft 100', as just'de' scribed, the boss 104 will turntherewith to store energy in the main spring 105 for future operation of the starting attachment; and the disk 106 (see Fig. 2) will rotate with said shaft 100 and thereby force the dog 107 away from said shaft. Such movement of said dog will swingthe end of the flexible latch out of the path of the pin 116 and will swing the arm 108 downwardly so that the free end. of said arm will act through the pin 84 to swing the lever 80 to its normal position andthereby carry'the pin 82 into engagement with the contact65 and more said contact away from contact carry the shield 114 across the upper portion of the indicator plate 6-7 so as to cover the word Not while leaving theword Set exposed.

During the rotation of the shaft 100, as just described, the pin 160 moving with said shaft will engage walls ofthe slots-in the boss of the dog 159 so as to turn said dog with said shaft from the'position shown in Fig. 8 to that shown inFig. 5; whereupon the rotation of said shaft 100 will be arrested when'said dog is brought into engagement with the rear side oft-he block 122. Just before the rotation of the shaft 100 is thus arrested,'the notch in the'disk 106 will be presented to the free end of the dog 107, and said dog will be moved into engagement therewith by the tension of the spring 111. The various parts will thereupon be restored to their normal positions.

Should the current path through the auxiliary station shunt loop be interrupted for a comparatively extended period of time, as,

for example, by the rupture of one of the conductors forming part of'saicl"loop,the'

magnet 62 will be energized and will thereby cause the arm 145 to be withdrawn from the path of the pin 146, as hereinbefore more fully explained, whereupon the drum 117 and parts moving therewith will move through the cycle of action hereinbefore more fully described. tinued energization of the magnet 62, the armature .153 will be maintained in fully attracted position until the lever 80 has moved to its abnormal position at the conclusion of the first half of a revolution of said drum; andthelug 149 will therefore be held in the path of the block 122, as best shown by Fig. 6. .When the advancing end of the block 122 engages the lug 149, the slanting face of such end-will swing said lug toward the shaft100, thereby rotating the shaft 91 so as to carry the pin 92 (see Fig. 3) past the projection 93-and to bring the ear 94 into engagement with the link 60 and swing the shoulder'of the terminal 13l out of the path of the pin 130. While the Darts are thus positioned, the rise of the cam' 120 will swing the lever 123 so as to carry the pin 130 past the shoulder of the terminal 131 along the upper flat face 'of' said terminal. The subsequent rotation ofthe drum 117 (see Fig. 6') will with-draw the block 122 from engagement with the lug 149 and will cause the rise of the cam 120 to swing the lever 123 so as to move the pin 130 (see Fig. 2) along the inclined face of the hookarm 109 and thereby permit the lever 80. to i'nove to its abnormal position, with the results hereinbefore: more fully described H i After thelug 149' has been disengaged respective Because of the. conby the bloclr122, as just rdescribed, the spring l di will swing the lever 143 toward its normal position, thereby swinging the lever 90 toward the left (as seen in Fig. 3)

until thepin 92 engages the projection 93; but the tension of thespring 1 17 will be insuiiicient to thereby move the contact 63 away from the contact 6%. During subsequent rotation thereof,the rise of the cam 120 will engage the lever 90 and thereby move said lever toward the normal position thereof, thus carrying the pin 92past the end of the projection. 93fto the position shown in Fig. 10; during which movement the engagement of saidpin with said projection will cause thecontact 03 to be temporarily moved awayfrom the contact 64:. When the lever90 has been moved by the cam 120, as just described, the magnet 62 will have been deenergized incident to the novement .of the lever80 upon disengagement thereof by the arm 109, and the spring 147 will therefore swing the lever 1 13 and parts moving therewith toward the normal position thereof until the lug 1 1 9 is brought against the inner face of the track 121.

Throughout succeeding rotation of the drum 11'Z, the lug1l9 will ride along the inner face of thetrack 121 until. the notch 158 in said track is presented to said lug-whereupon said drum and the parts moving therewith will be brought to rest as hereinbefore niore-fully explained.

Upon each of the occasions when the pin 92 is moved past the projection 93, as just described, the contact 63 is moved away from the contact 6 1, and the current path of the battery A is therebyinterruptedf It will therefore be evident that" the bell B and the register 0 will act twice (thereby manifesting the code signal 1 1). during the operation of the starting attachment in response to a continuing interruption of the auxiliary station shunt loop, and that said current path willthereafter be closed, thus leaving the circuit conditioned forresponse to transmitting stations D and E, as well as to'th'e operation of the transmitting mechanism of station F, should same be manually set in motion.

Inasmuch as the actuation of the contact (33 by the pin 92, as just described, causes the manifesting devices B and C to repeatedly act and establishes a measured pause between such actions in accordance with a previously determined code, as just described, for the purpose of manifesting a distinctive signaldesignating a fault in an auxiliary station loop, said parts will be hereinafter referred to as code signal fori 1 is closed through a poor connection so that m'ulating means. i

Should it be desired that such code signal formulating means shall cause the manifestation of other than the signall l, one or more additional projections, such as the projection 93, may be arranged, for example, as shown in Fig. 10, so, thatthe signal formulated incident tothe movement of said lever in response to a continued interruption ofthe auxiliary loop Wlll cause a code signal such as '22, 8 3, or the like. If need be, the form of the lug 149 andthat of the block 122 may be suitably altered so thata greater angular movement will be imparted to the lever 90,and so that such movement will be distributed over a greater portion of the rotation of the drum 117, to

the end that the movement of said lever will of this invention other than insofar as such arrangements comprise the provision of code signaling jmeansf operable incidentv to the running of the starting attachment subject to, the conditioning: of the tripping magnet. The term code signahas herein used in relation thereto, being intended to signify one or more groups of signaling impulses each of which impulses is of a character sulted for causing individual response thereto by.

themanifesting devices connected inthe main line circuit ;.-has distinguished from s gnaling means such as that shown in my prior application "hereinbefore cited, in which the signal formulated under like cir cumstances would cause but a single response of the manifesting devices of ia main line circult, and would therefore not dlstinguis h from the response of such instruments to rupture of themain line circuit or failure of the current source therefor. i i

After the current paththrough the aux} iliary station shunt loop hasubeen inter rupted for an extended period,land it is believed that repairs have been made serving to restore said loop to its normal closed con- ClltlOl'l,-Sll011ld itbe desired to ascertain the condition of said, 100 without causing the formulation of any signal in the main line circuit in the event that such shunt loop is not normally conditioned,the shaft 100 should be rotated sufficiently to force the dog 107 far enough away therefrom to cause the arm 108 to move thelever 80 into engagement with the contact] 65, (say about one-half of a revolution) but not far enough to cause said arm to carry the pm 110 into register with the notch provided therefor in the arm 109. l If the shunt loop is then in normal condition, the armature 153 will not move in response to such partial rotation of the shaft 100; but if said loop is. open or thatthe direction of rotation of the shaft 100 should be reversed, thus allowing said shaft to turn in response to; tension of the spring 105 until the rotation thereof is arrested by the engagement of the dog 107' with the notch of the disk 1%.

In the event of the energizationqof the magnet 62 in response to a partial rotation of-the shaft 100, asjust. described, the lever 143 will, not be so moved as to disengage the arm 145. fromthe pm 146,- because the segmental piece 161 will remain in the path of the projection 164i carried by the arm 1 18 and will thereby prevent releaseot the starting attachment in response to such energizertion of said magnet.

From the foregoing it will be seen that the operation of this: improved starting a-t-- tachment in response to intended actuation of a suitable auxiliary station. will result in tripping-the associated main line transmit-v ter;v and, that the operation of said attach.- mentin response to a continued interruption of said auxiliary loop will not cause theoperation of said main line transmitter but will directly formulate a code signal in the main linecircuit such as will cause response of= the bell. B and-register'G differing from that incident to the operation ofthe main. line transmitting machanism of any station (such. as the stations D, E and F), and so differing from the single stroke sounded by saidbell and the one mark upon the tape of said register in response to a continuing break of the main line circuit such as would result, for example, from accidental rupture of one of the conductors of said circuit, as to be readily. distinguishable therefrom.

The illustrative embodiment or this invention shown by the accompanying drawings andhereinbefore described in detail is given for the purpose of enabling; this invention to be more readilyunderstood; but thisiinvention isrnot limited to the particular: arrangement there shown and hereinbefore described in deail',asmany changes may be made, in construction and arrangement, and parts may be added, or omitted" without departing from the spirit of-this-in vention, the. scope of which is indicatedby the following claims:-

1. An; attachment comprising means for functional operation in response to an auxiliary circuit tocause starting of a main line transmitter only when said means is preconditioned for such operation, an indicator' movable from set to unset position upon functional operation of said means, and latch means for said indicator so-gover-ned by said'first named means as to preventiresettingof said indicator other than when such: preconditioning of said first named means has been restored.

2: In a starting attachment for a signal transmitter,-a windable part, aholder arranged for retaining said part in fully wound condition and for abnormal position position, means operable by the 'running of said attachment for disengaging said latch from said mechanism, and a detent so associated with said indicating mechanism as" to normallyprevent actuation thereof" in opposition to said bias tothe position where'- it may be held by said latch and so associated with said holder as tobe conditioned to permit suchactuation of said mechanism: only; during abnormal positioning of said holder.

3. In a starting attachment for a mainline-signal transmitter,-a motor spring for actuating said attachment, a winding memher for said spring, an actuator operable i'n-- cident to the unwinding of said springfor starting said transmitter, an indicator biased for movement to abnormal position a latch for retaining said indicator in normal position, a detent for preventing-movement of said indicator from abnormal to normal", means move'dby the running of said attachment for disengaging said indicator from said latch, and means moved by the actua tion of-said winding member for Withdraw-- ing said detent, from the path'of said indicator and for moving said indicator from abnormal to. normal. i

4:. In astarting attachment for a main line signal transmitter provided with a trip-- ping magnet arranged to be shunted by an auxiliary station loop, code signal for-mulating means subject to actuation by said attachm-ent; electrical conductors serially connecting-said transmitter, said tripping magnet and said formulating means; transmit ter starting means operable by the running of said attachment; normally Wound driving means: for said attachment arestoringmember operablefor rewinding-sai'd driving means; a holder for said member: indicator mechanism'biased' to act to manifest need of winding of said; part-,7 means operable by movement of said holder incident to winding-of said part for actuating said indicatingmechanism in opposition tosaid' bias aretainer for holding said indicating mechanism in actuated position; meanswoperable by the running of said attachment for causing the release ofsaid' indicator mechanism from said retainer; ala'mh operable by said holder for preventingmovement of said in dicator'mechanism to said actuated position other than during actuation of said restoring member, and: means for causing functional actuation of said signal formulating means in the event of operation of said attachment such as to require rewindingofsaid driving means without thereby causing operation of the' transmitter starting means.

5. Ina starting attachment for-a slgnal transmitter comprising a tripping magnet for connection Inan auxlliary loop,a normally wound train involving a tripper actuating part, a detent responsively associated with said magnet and-arranged for arresting movement of said part after a predetermined cycle of the operation thereof, a member op said part after a predetermined cycle of; the

operationthereof, a memberoperable independently of said part to store energy for driving; said part, means for assuring a full cycle of the operation of said part whenever said detent is conditioned to permit actuation thereof, means movedby the running of said train for effectivelyconditioning said detent at the conclusion of each such cycle, and a holder so jointly controlled by said part and said member as to mechani cally act after each operative cycle of said part to conditionsaid detent to prevent further movement of said part until said member hasthereafter been so operatedas to storeflsufiicient energy for another operative cycleof said part. H y

7 In a normally wound starting attachment for a main line signal transmitterprovided witha trippingmagnet arranged to be shunted by anauxilia ry station loop, a normally wound train involving a tripper'actuating part and a member operable independently thereof to; store energy-for driving said part, a detent for said train controlled by "said magnet, means moved; bythe runnings of said train for temporarily preventingjreengagement of said detent after dis.-

engagement thereof, a restoring member moved by the running of said train after a predetermined cyclethereof for moving said detent to :efli'ective position, a holder for retaining said detent in effective position, means moved by said train in running formoving said holder into the path of said, detent whenever said detent is movedto its effective position at the conclusion of a cycle of the operation of said train, and meansmovedby said windable member for withdrawing said holder from the path of saiddetent a 8. In anormally wound starting attachafter the completion of such predetermined nient for a main line signal transmitter provided with a prewinding member operable to store energyfordriving said; attachment and a tripping magnet arranged to be shunted by an auxilia station lo0p,'-a tripping member for said attachment controlled by said magnet, means for preventing said tripping member from acting to stop the running of said attachment afterstart ing thereof untillsaid attachment has run for a predetermined cycle, means operableby said attachment inrunning for moving saidtrippingmember for the purposelof arrestingthe running of said attachment cycle, and aholder for 'sai'dtripping memher so jointly controlledby said attachment and "said prewinding member as to permit movement of said tripping member to tri said attachment after the completion of suc a cycle of the running thereof only after said prewinding member hasibeen so operated as to store sufficient energy for another op erative cycle of said attachment. a "i 19. In a starting attachment for a main line transmitter,lt-a winding shaft, ratchet means for retaining winding movement imparted tosaid shaft, a motor spring one end of which is secured: to said shaft, a drum revoluble independently of said shaft and to which the otherend" of said'spring isat tached, a dog loosely :journaled' upon saidshaft and so connected therewith as to Peimit limited relative movement therebetween, a lug carriedby said drum and moving in the path ofsaid dogwhereby relative move ment betweensaidshaft and said drum is suitably limited, a detent lever for preventing; rotation of said: drum, means operable by the rotation 0f said drum for preventing movement of said detent to its effective poisiti'on prior to'the completion of an intended operative cycle of saiddrum, means moved by the rotation ofsaid drum for moving" V sald detent to its effective position at the con clusionof suchan operating cycle, a holder for retaining said detentiin itsrefi'ective po-f sition, 'mean's actuatedfibynthe rotation of said drum forurg'ing said holderinto engagement with said -detent,fand means op erable by saidwindable partforfldisengaging said holder from said detent. V

U10. In a startingattachment for a main line signal transmitter zfia windings shaft; ratchet means forretaining winding move ment imparted to said shaft; a motor spring one;end oft-which issecuredto said. shaft ;-a drum revoluble independently of said shaft and to which the other endv of said spring is attached; a dog loosely journaledmpon said shaft and so connected theretoasto per-s mit limited relative it 'movement therebe-r tween; a lug carried by said drum and .mov-

7 ing inftheipath-ofrsaid dog Whereby relative movement between said shaft andsaid drum 0 is suitably limited; a detent lever for preventing rotation of said drum; means for continuing the ineffectiveness of said detent lever after movement thereof from normal to abnormal position until the conclusion of the full intended rotation of said drum; a segmental plate revolnble around said shaft independently of said shaft, said drum and said dog; a spring connecting said plate and said dog; and such relative arrangement and formation of said lug, said dog, said detent lever and said plate that when said main spring is normally wound said plate will permit movement of said detent lever from normal to abnormal position, so thatlease thereofsaid lug Will move said dog so as to apply tension of said second named spring tending to swing said plate into the path of said detent lever, and so that movement of said lever from normal to abnormal position will be prevented when said plate 25 has been so swung.

In Witness whereof, I hereunto subscribe my name, this 24th day of June, 1921.

NATHAN I-I. .SUREN.

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