US1122615A - Sender. - Google Patents

Description

J. A. KROPP.

SENDER. APPLICATION FILED JULY 29,1913.

Patented Dec. 29, 1914 2 SEEETSSHEI1T 1.

J. A. KROPP SENDER.

APPLICATION FILED JULY 29. 1913.

1,122,615; Patented Dec. 29,

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JOHN A. KROPP, OF NEWARK, NEW" JERSEY, ASSIGNOB TO VJESIERN ELECTRIC COM- PMY, OF NEW YORK, N. Y., A CORPORATION OF ILLINOIS.

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Application filed July 29, 1913. Serial No 781,784.

To all whom it may concern Be it known that I, Jot-11v A. Knorr, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Senders, of which the following is a full, clear, concise, and exact description. I

This invention relates to calling devices or senders for use in automatic or semiautomatic exchange systems, and has for its object the provision of an improved and simplified" structure for transmitting signaling current to the exchange mechanisms,

which cannot be readily deranged and which it is practically impossible to operate in an incorrect manner.

Briefly stated, myinvention consists of a rotatable finger-piece and a plurality of stopping positions, and mechanism so arranged that if said finger-piece be moved to any desired position and then forcibly returned to normal, it will cause impulses to be transmitted corresponding to the position to which the finger-piece was moved.

Referring now to the drawings Figure 1 is a perspective view of the sending apparatus with parts broken away; Fig. 2 is in part a broken perspective view, with parts broken away; Fig. 3 is a view or the driving gear and the parts carried thereby; Fig. 4- is a transverse sectional view on the line of Fig. 1; Figs. 5, (Sand 7 are side elevations of the device with partsv broken away, showing the controlling device in different actuated positions.

Referring now to'the drawings, plates 1 and 2 are maintained in spaced relation by means of the spacing posts 3. Arranged to fit about the circumference of the member 1 in contact with the plate 52, is a cylinder 4 forming the inclosure for the sides of the apparatus. Fixed to the plate 2 is a dial member provided with a plurality of equi-distant depressions containing the numerals from 0 to 9. The numerals 0 and 9 are spaced apart. substantially the distance of two positions. Rotatably mounted in the plate 2 and the dial member 5. is a "hub 6 to which is fixed the actuating finger member 7. Fixed to the member 6 within the casing is an arm 8 and a. ratchet wheel 9. The member 6 has a depression in the inner end thereof which receives one end of the shaft 55. the other end of which is rotatably Specification of Letters Iatent.

Patented net. an, ion.

mounted in the plate 1. Loosely mounted on the shaft by means of the collar 10, a cylinder 11, provided with a pawl 12 held in engagement with theteeth of the ratchet wheel 9 by means of the spring 13. Secured to the inner surface of the drum 11 is one end of the coil spring 14, the'other end of which is secured to the sleeve 15 on the shaft 55. Fixed to the sleeve 15 is the driving gear 16 ,and the impulse wheel 17. Rotatably mounted between the end of the bracket member .18 and the plate 1 is a shaft 19, provided with a pinion 20 arranged to intermesh with the gear Wheel 16 and a worm wheel 21.

Rotatably supported in operative relation to the worm wheel 21 is a worm 22, provided at one end with a centrifugal governor which comprises the -cy1inder'23 within which are located the weighted ends of the spring arms 24 fixed. to the end of the worm (See Figs. 1 and 4). gecure the opposite end of the Worm shaft is a pair of oppositely projecting lugs 26. Uperatively associated with the impulse wheel 17 is a spring arm 29, insulatively secured to the contact spring by means of the spacing member 31. Mounted for engagement with the contact spring 30 when the end of the arm 29 is locatedin a depression between the teeth oftheimpulse wheel, is a second contact spring 232.- Springs 30 and are normally in engagemennbut upon the rotation of the impulse wheel 17, contact therebetween will be alternately made. and interrupted. It will now be seen that if the arm '7 be rotated in an anticlockwise direction to" any desired position, that the teeth of the ratchet wheel 9 will ride under the pawl 12 without rotating the spring drum 11. Upon clockwise return, however, of the arm 7 to its normal position, midway between positions 0 and 9, the spring drum will be rotated, thus. tensioning the spring 1 and tending to rotate the impulse wheel 17 to make and break the contact be tween springs 30 and 32. Means. however. are provided to assure that no rotation of the contact wheel will take. place until the arms 7 assure that the rotation of said impulse wheel will be positively stopped when the correct number of impulses have been transmitted.

Mounted for longitudinal movement is is locked in its home position, and to 'thegro d 34, one end of which is received inv fixed to the rod 34 by means of a notched arm 8.

portion of said rod being received in the bifurcated end of said bar 37 as shown in 1. This bar is centrally enlarged and perforated and passes loosely about the rotatable member 6. Punched from the bar 37 near one end is a cam-like catch 38 adapted when the rod 34 is in its upper most position, as shown in Figs. 6 and 7, to be in-a position to engage and retain the Mounted parallel to the rod 34 in the plate 1 and bracket member 35 is a longitudinally movable member 39 held in its normal or lowermost position as viewed in Fig. 5 by means of a spring 40, one end of which is secured to the plate 1, the other end being secured to said bar 39 in any desired manner. A spring 41 is secured at one end to the plate 1 and at the other end to the rod 34 as shown in Fig. 1, This spring is provided intermediate its end with a projecting portion 42, (Fig. 5), arranged for engagement with the hub of the impulse wheel 17, wherebythe gear wheel 16. is nor mally forced toward engagement with the spring drum 11.

Formed in the circumference of the spring drum 11 adjacent the gear 16 is a depression 43. Rotatably mounted in the wheel 1.6 and the plate 44 secured thereto, in a position to traverse the circumference of the drum 11, is a roller 45 which, when the parts are in normal position, is located in the depression 4-3 so that the drum 11- and gear 16 are in engagement as shown in Figs. 4 and 5, but

upon-rotation of the finger-piece 7 from normal position, this roller rides out of the depression 43, elevating the hub of the impulse wheel 17 on the shaft 55, and through 41 forcing the rod 34 upwardly as shown in Figs. 6 and 7. Near the opposite edgeof the gear 16, but not diametrically opposite the roller 45 just mentioned, is another roller 46, and formed in the circumference of the drum 11 is a notch 47 corresponding to the notch 43 just described. As these rollers and their corresponding notches are not diametrically opposite, both rollers will enter the notches only when the wheel 16 and the drum 11 are.

in a certain relative position, that is, each roller must be positioned in its respective notch in the drum in order that the gear 16 may approach the drum 11.

Formed in the gear 16 near the circumference thereof, is a fplurality of slots 56, one for each position 0' the finger-piece or actuating member 7. Projecting from the bracket 35 is a finger 57 so arranged that when the gear 16 approaches the drum 11 as the arts of the sender approach normal, the 'nger 57 will enter oneof the slots 56 and prevent further rotation of said gear wheel until after the drum has been again rotated by means of the lever 7. Secured to the springs 40 and 41 respectively, near the ends thereof, are a pair of fingers 48 and 49 adapted to coiiperate with the projecting arms 26 at one end of the worm 22. These springs 40 and 41 are secured at their ends to rods 39 and 34 as previously described, and when either of said rods is in its lower position as viewed in Figs. 5, 6 and 7, the corresponding one of said stop members 48 or 49 will be positioned in the path of rotamember 7 is rotated in one direction or the 7 other. The cam surface 51 ends in avertical surface or stop portion 52 (see Fig. 5) ,which acts as a stop for the arm 8 after the rod 39 has been raised a certain distance. The arm 8, however, can be rotated in the other direction or in an anti-clockwise direction as viewed in Fig. 1 Without limit as the ratchet wheel 9 will ride under the pawl 12 and the arm 8 will force the rod 39 downwardly out of the path of its movement by means of the cam surface 50.

.Projecting outwardly from the plate 44 is a lug 53, and projecting outwardly from the circumference of the drum 11 vis a lug 54adapted for engagement with the lug 53 when the drum and gear are in their normal relative positions, thus preventing reverse rotation of the drum when the parts are released after the series of impulses have been transmitted.

Having now described the parts of the device and their relation one to another, the operation is as follows: It should be understood that when the sender is in its normal position the stop lugs 48 and 49, fixed to the rods 34 and 89 by means of the springs 41 and 40, are normally retained in the path of rotation of the lugs 26 on the worm shaft 22. To set up. a call the operator, whether at the substation or at the central oilice, actuates the lever 7 by inserting her finger in the hole at the end thereof and rotating the lever in an anti-clockwise direction until it occupies a position to allow the operating finger to enter the depression indicated by the first digit of the call. This rotation must take place in an anti-clockwise direcwith the rollers so and a6 and the gear 16 and members fixed thereto will be; moved longitudinally on the shaft 55 away from thedrum l1,'thus displacing the spring ll and causing the rod 34.- to be moved upwardlyas viewed in Figs. 6 and 7. This movement of the rod 3i carries the stop finger 48 out of the path of the lugs 26. The stop member l9, however, remains in engagement with one of the arms 26 until upon the approach of lever 7 to its normal position the arm 8 engages the cam surface 51 and depresses the rod 39. As the arm 8 approaches the cam surface 51, it engages and asses under the cam projection 38 carried )y the spring arm 37 now in its raised position as shown in Fig. 7. As the arm 8 engages the stop member 52, it passes back of the catch 38 and is maintained stationary until the sending of the'series of impulses has been completed, when. as the rollers l5 again enter the cam notches 43, the rod 34 is. again shifted longitudinally to remove tie catch. 38 out of the path of the arm 8.

When the rod 39 is depressed by the arm 8 engaging the cam surrace 51, both stops 18 and 4-9 are out of engagement with the lugs 26 and the worm wheel is caused to rotate by the power transmitted from the spring 14, through gear 16, pinion and worm wheel 21 to the worm 22. The gover- "nor carried at theopposite end of the worm 22 serves to regulate the speed of rota tion thereof and consequently determines; the

rapidity with which the impulseh shall be transmitted. The .impulsewheel l7 fixed to the gear 16 rotates therewith, intermittently opening and closing the contact between the springs 30 and 32. As the last impulse of the series is being sent, the rollers 45 and 46 enter the cam notches 43 and d7, allowing the gear 16 to again approach the drum 11, releasing the spring ll which thereupon causes the rod Site be shifted downwardly, as viewed in Figs. 5 to 7 and j -placing the stop finger $8 in the path of the lugs 26 carried by the Worm 22, thus bringing the sending operation to a close. The longitudinal, displacement of the rod 34 has released the'arm 8 and the device is now in condition for another sending operation. This operation of rotating the operating lever 7 to a position over the desired digit and then returning the lever to its normal position is repeated once for each digit of the wanted subscribers number.

I claim:

l. In a sender, circuit interrupting mechanism, an operating member therefor, means whereby the initial movement ofsaid memher from its normal position will be ineffective, means whereby the return of said member to said position will ca se the actuation oi said circuit interrupter, and means whereby a partial return will be ineffective.

3. In a sender, circuit interrupting mech- :mlsm, motor mechanism therefor. an operating member i or teusioning' said motor means, means whereby the movement of said member in one direction will be ineffective, and means whereby the return of said member to a definite position will tension said motor means to cause the actuation of said circuit interrupter.

3. In a sender, circuit interrupting mechanism, motor means for operating said "mechanism, a member for tensioning said motor means, means whereby the movement of said member in one direction will be ineffective, means whereby the return move ment of said member will tension said motor means, and means for releasing said motor mechanism when said member has reached a definite position.

i. In a sender, circuit interrupting mechanism, motor means for operating said mechanism, a pivoted member for tensioning said motor means, means whereby the movement of said member in one direction will be ineffective, means for tcnsioning said motor ,means by the return of said member, means for releasing said motor on the return of said member tol-adefinite position whereby said circuit interrupting mechanism will be actuated, and means for retaining said memher in said position during the actuation of said circuit interrupter.

fnln a sender, circuit interrupting mech anism, an operating member therefor,

mounted for unlimited rotation in one direc-,'

tion, and means whereby the moving of. said' 'memfber in the reverse direction to a definite position will effect the actuation of said circuit interrupter. v 6. In a sender, circuit interrupting mechanism, a spring motor for operating said. mechanism, a pivoted lever for tensioning said motor, means whereby the unlimited movement of said member in one direction will be ineffectivegmeans whereby the reverse movement otf said member will tension said motor, and means actuated uponthe return of said member to a definite position for releasing said motor, 'whereby'said circuit interrupting mechanism will be actuated.

7. In a sender, circuit interrupting mechanism, motor means for actuating said mechanism, a member for tensioning said motor means, means whereby the selective movement of said member will be inefi'ective, means whereby the movement of said mem her in a reverse direction will tension said motor means, means for releasing said motor upon the return of said member to a definite position and means for governing said reverse movement, and means for rethe speed of said motor. v lensing said motor when said lever has been 8. In a sender, circuit interrupting mechreturned into :1 definite position. anism, motor means for actuating said mech- In witness whereof, I hereunto subscribe 5 nnisin, an operating lever, means whereby my name this 26th day of July A. 11,1913. 15

the seieetire novenrent of said lever in. one JOHN A. KROPR direction 111 be meheetne, means whereby v the movement of said lever in the reverse di- Witnesses:

rection will tension said motor means, means ALICE HAZLEY,

10 for retaining said motor inactive during LAURA Donnie.

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