US1821165A - Selective signaling and apparatus - Google Patents

Selective signaling and apparatus Download PDF

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Publication number
US1821165A
US1821165A US270389A US27038928A US1821165A US 1821165 A US1821165 A US 1821165A US 270389 A US270389 A US 270389A US 27038928 A US27038928 A US 27038928A US 1821165 A US1821165 A US 1821165A
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United States
Prior art keywords
selectors
selector
printing
typewheel
stop
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US270389A
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English (en)
Inventor
Edward E Kleinschmidt
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AT&T Teletype Corp
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Teletype Corp
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Priority to DENDAT623799D priority Critical patent/DE623799C/de
Application filed by Teletype Corp filed Critical Teletype Corp
Priority to US270389A priority patent/US1821165A/en
Priority to GB21149/31A priority patent/GB382313A/en
Priority to FR721626D priority patent/FR721626A/fr
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Publication of US1821165A publication Critical patent/US1821165A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/16—Apparatus or circuits at the receiving end
    • H04L17/24—Apparatus or circuits at the receiving end using mechanical translation and type-head printing, e.g. type-wheel, type-cylinder

Definitions

  • My invention relates to selecting and printing mechanism, and more particularly, the invention relates to printing telegraph mechanism.
  • the rate at which signals can be transmitted has heretofore usually been greater than the speed at which the printer can be operated. This is due to the number of operations which must be performed by the printer following the receipt of a code combination of impulses.
  • the selecting apparatus must first function in response to these impulses to select a character for a printing operation. Thereafter the selected character is positioned for printing, the printing hammer is operated, and letter and line spacing are some among many other operations which must take place before the printer is in condition for a succeeding code. It is evident from this, that ordinarily an interval of time must elapse between the receipt of the last impulse of a code and the first impulse of the succeeding code to provide sufficient time to permit the above described printing operations to take place.
  • Latching selectors has been necessary inasmuch as they usually have a normal non-operating position in which they remain in response to a spacing impulse and an operated position to which they are moved in response to a marking impulse, each selector returning to its normal spacing position when released or unlatched' in response to spacing signal.
  • these selectors are arranged to remain in their operated positions after their setting has been transferred to the overla or second selectors, the succeeding code unctioning either to latch those selected bars entering the new combination which were not part of the preceding combination and releasing those latched selectors operated by the preceding combination, but which do not enter the new combination.
  • the latched selectors are restored to normal after each transfer operation. In both cases, however, it will be observed, the selectors are operated. only by marking impulses, the spacing impulses either having no effect or merely unlatching operated selectors to permit a return to normal. Latches, however, have been found to add complexity to the telegraph apparatus to increase the power required for operations and to slow the speed'of operation.
  • an object of my invention is to provide a printing telegraph apparatus with a complete overlap in which the selectors are not latched in operated position.
  • a further object of my invention is to provide an overlap selector arrangement in which the selectors responsive to the re ceived impulses have no normal position.
  • a further object of my invention is to provide printing telegraph apparatus in which selective operations are made with an overlap selector in which the shift selection occurs, simultaneously with the switch over operation.
  • the typewheel be released for rotation to a selected position as soon after the transfer to the second set of selectors occurs as possible.
  • this has been accomplished by a timing mechanism which releases the typewheel after an interval of time following the selecting operation transfer. Since, however, as soon as the selection is transferred to the second selectors, a new selected position is immediately made, it is clear that the typewheel may be released simultaneously with this movement of the selectors.
  • a still further object of m invention is, therefore, to provide a typew eel printer in which the movement of the overlap selectors to a. new selected position automatically releases the typewheel for movement to the new selected position.
  • the rotating typewheel when brought to a stop has been found to have a tendency to rebound and chatter at the stop position due to the jar or shock caused by bringing a typewheel rotating at high speed to a sudden stop. This causes blurring of the printed character as the printing hammer is brought into engagement with the chattering typewheel.
  • a latching spring is provided as part of the typewheel stop arm which latches in front of the stop pin when the sto arm comes to a stop.
  • a still further object of my invention is to provide a stop arrangement in connection with a typewheel for preventing chattering or rebound of the typewheel.
  • a still further object of my invention is, therefore, to provide a simple printin telegraph selector which controls the printing telegraph motor.
  • Figure 1 is a side elevational view partially in section of a of my invention.
  • Figure 2 is a longitudinal section taken on 2-2 of Figure 1.
  • Figure 3 is an elevational View partially broken away looking in the direction of arrow 3, Figure 1.
  • Figure 4 is an elevational view looking in the direction of arrow 4, Figure l, and partially broken away.
  • Figures 5 and 6 are elevational views of the wishbone and switch over selectors shown in positions assumed before and after operations.
  • Figure 7 is an elevational View partially in section of the printing hammer operation.
  • Figure 8 is an elevational view of the type, wheel and printing hammer.
  • Figure 9 is an elevational view of the orientation disk and'wishbone selectors.
  • Figure 10 is a perspective of a modified form of sixth impulse shift.
  • Figure 11 is a perspective of a preferred form of a sixth impulse shift.
  • Figure 12 is a vertical sectional view showing a preferred embodiment of the control of the printer motor.
  • Figure 13 is an elevational view at right angles to the view shown in Figure 12.
  • Figure 14 is an elevational view of the construction shown in Figure 11.
  • Figure 15 is a side elevational view of a preferred embodiment of the typewheel lock device.
  • Figure 16 is a fragmental edge view of Figure 15.
  • Figure 17 is a modified form of the typewheel lock device.
  • Figure 18 is a transverse sectional view of Figure 17, and
  • Figure 19 is a sectional view through the slip clutch in Figure 1.
  • FIGs 1 and 2 the mechanism controlled by a single selector magnet which may be of any well known construction especially designed for use in stock ticker operations' is mounted on a frame work 1 which carries the magnet 2. Supported on the preferred embodiment core 3 are the magnet windings 4 and pivotally supported from the permanent magnet is the oscillating armature 5, the motion of which is limited by means of the adjustable stop screws 6.
  • the twisted extension 7 of the armature extends between the two shoulders 8 and 9 on the selector cam shaft extension 10.
  • the cam shaft extension 10 is formed integrally with the shaft 11 and is 10 slidably journalled in a stationary bearing 12 which is supported from the frame work as shown.
  • Shaft 11 comprises a flat stamped metal member with six pairs of oppositely disposed fingers 13. The flat stamped metal member is twisted as indicated in Figures 1 and 2, disposing the fingers 13 in angular relation about the longitudinal axis of the shaft.
  • the shaft 11 extends through a rotatable hollow shaft member 14 suitably journalled in the framework and secured to the end of shaft 11 is the friction member 15 of the slip clutch described fully hereinafter.
  • a driving member 18 Pivotally secured to shaft 11 at 17 adjacent the end of shaft 14 is a driving member 18 whose opposite end operatively engages shaft 14 whereby rotation ofshaft 14 is transmitted to shaft 11.
  • a star wheel 19 the cam shaped periphery of which actuates a bell crank lever 21 (Figure 3) pivoted at 22 to the framework.
  • Bell crank 21 rocks a pivoted arm 23 ( Figure 2) about its pivot 24 moving the locking lug 25 carried thereon out of and into the path of the armature extension 7.
  • the lug on pivoted lever 23 is normally held by the spring '26 in the path of armature extension 7.
  • the cam projections on the star wheel 19 are so shaped that the lever 23 is rocked in a clockwise direction through bell crank 21 to remove the lug 25 from the path of armature extension 7 releasing it for operation in response to a received impulse during the mid portion of signaling period.
  • the bell crank 21 is rocked in the opposite direction by the cam projections on the star wheel 19 and rocks the lever 23 counter clockwise moving lug 25 into engagement with the armature in its operated position.
  • the armature is free to respond only to the peak portion of each impulse and is locked during the remaining portions thereof preventing chattering of the armature during the transient periods of such impulses.
  • Slip clutch 16 comprises in addition to the member 15, a surrounding open ended cylindrical member 27 in which the ends of friction contact springs 28 are secured, the intermediate portions of which .frictionally engage member 15 as indicated in Figure 19.
  • Secured in member 27 is one end of a shaft 65 29 supported from the frame work by antifriction bearings 31, the opposite end of which is supported in bearing 31 suitably supported from the frame.
  • Secured to and rotatable with shaft29 is a spiral gear 32. Shaft 29 is driven continuously while the printer is operated through spiral gear 32 meshing with worm 33 carried by and rotatable with main drive shaft 34. The power is transmitted through clutch members 16 and 15 to the extension 14 of shaft 29 which, however, is latched against rotation as will be described hereinafter.
  • Clutch member, 15 therefore slips on rotating springs 28 at this time. Provision is made in the bearings 31 and 31' to take up the thrust due to the fact that the shafts 29 and 34 operate at right angles to each other. It will be understood that this drive may be effected with bevel gears if so desired.
  • a stop member 35, Figures 1 and 9, carried by shaft 11 normally engages a lug 36 carried by an orienting plate 37 which is rotatably mounted on shaft extension 14 and rigidly held by securing means 38 in a manner to permit its adjustment about the shaft extension as a center.
  • An orienting portion 37 is provided for adjust-ing the relative position of the stop member 36 which is rigidly held in its set stop position. As shown in Figure 1 when the armature 5 of the magnet 2 is attracted, the shaft 11 is in zero or normal position.
  • each of the fingers are as described above, divided into pairs, each pair being arranged diagonally opposite each other on the shaft 11.
  • the cammed surface of one of the fingers 13 will engage the cam portion 42 of the arms 45 and will, as a result, rock its individual wishbone selector counter-clockwise.
  • the diagonally opposite finger 13 rides in front of the arm 46 of the wishbone selector which has nowbeen rocked to driven by rotating shaft 29 through clutch its operated position. It will be clear that as this finger moves in front of arm 46 the shaft 11 is locked from further operation during the remainder of the impulse period.
  • selectors 43 are not latched in position, in fact, have no normal position but remain set in either of its two operated positions to one of which they move in response to a marking impulse and to the other of which they move in response to a spacing impulse.
  • the stop condition is normally on the line holding the parts in the position shown in Figures 1 and 2.
  • the impulse immediately following the start impulse is a spacing signal
  • the selector magnet 2' will operate its armature 7 in the opposite direction and the finger 13 will ride over the cam surface 41 of the wishbone 43 rocking it a'clockwise direction about its pivot lectors are positioned by individual fingers in accordance with the-received code.
  • Each of the wishbone selectors 43 is provided with extensions or prongs 51 and 52. Disposed adjacent these prongs are the lug portions 53 and 54 of the transfer selectors 55.
  • a transfer selector 55 is provided for each of the wishbone selectors 43 and as shown, are pivotally mounted on the pin 56 carried by a transfer lever 57, Figure 4. As will be described in detail hereinafter, the pin 56 is moved toward the wishbone selectors carrying all the transfer selectors simultaneously into engagement with their associated wishbones for operation thereby in accordance with the setting of the selectors43.
  • Transfer lever 57 is carried between prongs 58, Figure 1, on shaft 59 mounted in. a bearing depending from the frame structure at 61.
  • a lever arm 62 is secured to the end of and rotates the shaft 59 and carries a follower 63 which rides in a cam 64, Figures 1 and 4.
  • Cam 64 is carried on and rotatable with outer shaft 65.
  • Shaft 65 carries agrab clutch 66 normally held out of engagement with clutch 67 by a lever arm 68 riding on the cammed surface 69 of cam' member 70 secured to and rotatable with the grab clutch 66.
  • Grab clutch 66 is operatively connected to outer shaft 65 by means of an integral lug 71 extending therefrom and movably engaged within a slot 72 in outer shaft 65.
  • a coil spring 73 is interposed between cam 64 and cam 70 for pushing the clutch member 66 into driving engagement with clutch member 67.
  • the lever 68 is secured to a connecting rod 74 by means of screw 75.
  • Connecting rod 74 carried by a bearing 76 is secured at its opposite end to a lever arm 77.
  • the lever arm 77 is provided with a follower 78 which rides over a cam 79 carried by and rotating with the shaft 14.
  • cam 64 rotates scription, after the cam shaft 11 has rotated through a sufficient angular movement to position all of the selectors 43 .in accordance with the received code, the operated ones of which are moved counter-clockwise.
  • the outer drive shaft is released for rotation under control of a cam 79 on shaft 14, and cam 64 on the outer-drive shaft 65 in turn rocks the lever 62.
  • the shaft 59 is rotated and lever 57 carried on the end of the shaft rocks the shaft 56 forward bringing either lug 53 or 54 of each of the selector levers 55 into engagement with their associated lugs 51 and 52 on the pivoted wishbone selectors 43 depending upon whether these selectors are in operated or non-operated position. For example, if the selector.
  • Disks 87 are rotatablysupported on a sleeve 88 Figure 1, which 1s supported in framework and are disposed between guiding comb plates 89 and 90.
  • a series of stop members 93 Arranged about the cir-' cumference of thedisks 87 and guided in slots formed in the guides 89 and 90 are a series of stop members 93 provided with cam rollers 94 which are positioned between guide combs 89 and 90.
  • the stop members 93 are spring pressed inward forcing the rollers '94 into the aligned slots of the disks.
  • spring pressure is furnished by the spring members 95 and. 96. It will be understood, however, that the members themselves may be eonstructed of spring wires, for this purpose.
  • Each transfer selector 55 as it rocks about pivot 56 will'turn its associated selector disk 87 to either of its two operated positions.
  • a typewheel shaft 97 Journalled in the sleeve 88 is a typewheel shaft 97 which has secured thereto a stop member 98, of such length as to normally miss the non-selected stop members 93 as member 98 rotates with the typewheel shaft.
  • a selected stop member 93 which has dropped into the aligned slots is, however, in the path of stop arm 98. As the latter rotates, it will engage this stop member.
  • the typewheel shaft 97 is thus brought to a stop at a predetermined position depending upon the particular stop member which has typewheel shaft 97 is supported from the framework in bearings 98 and 99 and slidably keyed thereto is a friction drive clutch member 101.
  • a helical spring 102 interposed between the shoulders on the collar 103 and the clutch 101, frictionally engages the.
  • the typewheel shaft 97 carrying on its other end a spiral gear '106-rotatable therewith and meshing with worm 107 on the main drive shaft 34, normally tends to rotate but is latched against rotation while the seeker stop arm 98 en ages one of the stop pins 93 on the circum f erential surface.
  • the typewheel 104 starts rotating and continues until the stop arm 98 again reaches a stop pin 93 which has dropped into the aligned notches due to the new setting of the selector disks 87 and the typewheel is again brought to a stop.
  • a latching spring 108 is provided, Figs. 15 and 16, secured to the stop arm 98.
  • Latching spring 108 which is normally substantially in alignment with stop arm 98 is cammed or pressed outwardly and rides over the front end of the selected stop pin 93 when the latter is reached, and latches in front of it by its own spring tension when the arm 98 comes to a stop.
  • the stop pin 93 engaging the stop arm 98 is forced out of the aligned slots and out of the path of the stop arm which thereuponrotates to the new selected position.
  • FIG. 17 A modified form of such a stop is shown in Figure 17 in which the well known form of bicycle coaster brake is employed.
  • the typewheel shaft and clutch "member 101 are similar to that described in connection with Figure 1, and are accordingly not described again. Similar characters are employed for like parts in this modification.
  • the rollers 111 are set in wedge shape openings 112 between wedge member 113 and the ring 114.
  • the typewheel 104 as 1 extension 105.
  • the speed of rotation of the typewheel is 'so timed that one complete revolution will take'place in the period covered from the stop signal at the end of the preceding code to approximately the fourth or fifth impulse in t e succeeding code series, employing as will now be clear, substantially the entire signaling period for the printing operation.
  • the settings of the wishbone selectors 43 are transferred to the selector disks 87 through transfer selectors 55.
  • Selector disks 87 are positioned in accordance with this code.
  • the stop pin 93 in an aligned slot is cammed out and the typewheel is released to rotate while the succeeding code is being received on the wishbone selectors 43.
  • FIGs 10, 11 and 14 Two modified forms for selecting the row of type on the typewheel to be operated are disclosed in Figures 10, 11 and 14.
  • a sixth wishbone selector 43 is mounted with the other selectors on pin 44 and rocked thereabout by an individual finger'on the shaft 11 in a manner described in detail with respect to the other selectors.
  • a horizontally extending member 122 carried by the selector at its extremity is pivoted on a pin 123 by means of sleeve 124 for rotation therewith.
  • the portion 125 of member'122 is positioned between the shoulders of the impact members 126 and 127 and which are moved thereby either to the right or left to engage either of the printer hammers in accordance with the position of the selecting lever 43, which in turn is positioned in accordance with the sixth impulse in the code.
  • one of the impact members rendered operative in this manner to engage its associated printing hammer is thus selected, a direct connection being provided between the sixth selecting lever 43, and the impact rollers.
  • a typewheel 104 Secured to the end of the typewheel shaft 103, and rotatable therewith is a typewheel 104 as shown in Figure 8, provided with ,two rows of type characters respectively one of numerals and the other of letters arranged about the periphery.
  • the typewheel is mounted on an extension sleeve 105 and arranged to rotate with the typewheel shaft 103 through clutch 101. As the typewheel rotates, the characters on the periphery are sequentially brought opposite the printing hammers 131 and 132 individual to each row of characters.
  • the printing carried in the slot of a pivoted arm 134 which have projections 135 on their lower side.
  • impact members 136 and 137 Positioned just below the projections 135 and in co-operative relation therewith are impact members 136 and 137 similar to impact members 126 and 127, Figure 10,.
  • a tape moves between the printing hammers 131 and 132 and the typewheel 104.
  • Carried by the pin 143 is a lever 151 carrying in its end a pawl 152 which engages the teeth of a ratchet wheel 153 mounted on the same pin as and rotatable with feed wheel 154.
  • the lever arm 151 is rocked about pin 143 the pawl 152 engages the successive teeth of the ratchet wheel 153 while a jockey roller 155 carried on the arm 156 pivoted at 157 and held in engagement with the ratchet wheel by a spring 158 prevents the ratchet wheel 153 from moving in a clockwise direction.
  • a pressure roller 159 carried in a lever 161 mounted in a pin 162 has secured thereto a helical spring 163 the other end of which is secured to the frame Work.
  • the pressure roller 159 forces the tape against the feed roller.
  • feeding of the paper starts immediatel after the selected character is printed.
  • n ink pad 164 suppo rted from the frame brackets 165 presses against the periphery of the typewheel, as shown.
  • lever controlled contacts which are included in the motor circuit.
  • a pair of spring pressed contacts and 171 are normally held in disengagement by a lever arm 172.
  • Lever arm 172 is pivoted at 173 and locked in the position shown under shoulder 174 of the lever' 175.
  • the lever 175 pivoted at 176 is held in operated position by the helical spring 177.
  • the armature 7 of the receiver magnet 3 is operated in response to the start impulse. As the armature 7 moves to the right it rocks lever 175 about its pivot 176 against spring 17 7 and removes the shoulder 174 from lever 172.
  • Lever 172 is unlatched permitting the contacts 170 and 171 to close. As will be understood, these contacts are in the motor circuit.
  • Stop pin 178 is operated in the manner described above for other selecting operations and when operated rocks the bell crank 179 about its pivot 180, to bring the lever 172 in the path of a printing hammer. This when operated, as described above, rocks the lever 172 so that it will be latched by the lever 17 5.
  • a motor In a printing telegraph receiver, a motor, a normally open circuit therefor, selector apparatus, an electromagnet responsive to received code combinations of impulse conditions for operating said selector apparatus, said magnet being responsive to the first received impulse for closing said 1110- tor circuit and said selector apparatus being operative in response to a predetermined code combination of conditions for opening said motor circuit and means operative following the opening of said motor circuit for locking said circuit open.
  • a motor In a printing telegraph receiver, a motor, a normally open circuit therefor, selector apparatus, an electromagnet responsive to received code combinations of impulses for operating said selector apparatus, said electromagnet being responsive to the first receivedjmpnlse of the code for closing said motor circuit, said selector apparatus being responsive to a predetermined code for opening said motor circuit and means for lock ing said circuit in open condition.
  • a printing telegraph receiver printing mechanism responsive to received code combinations of conditions, a motor, means including said receiver responsive to received code combinations of impulses for selectively controlling the energizing circuit of said motor and mechanical locking means for maintaining the motor circuit in the condition determined by said code.
  • a motor therefor selector apparatus responsive to received code combinations of impulses for selectively operating said printing telegraph receiver and means controlled by said selector apparatus for selectively controlling said motor circuit and means for locking said motor circuit in operated condition.
  • an electric motor responsive to received code combinations of impulses for selectively operating said receiver, means responsive to a predetermined operation of said selector for selectively operating said motor and means for locking said motor circuit.
  • a first selector responsive to received code combinations of impulses, said selector having no normal position, second selectors and means operative following the operation of said first selector for transferring the settings thereof to said second selectors 7.
  • a first selector responsive to received code combinations of impulses said selector comprising a plurality of members having no normal positions, a second set of selectors selectively operated by said first selectors, printing apparatus selectively operated by said second selectors, said first selectors being responsive to succeeding code combinations of impulses while said printing operation is taking place.
  • a first set of selectors each having a marking and spacing position, said selectors being operated to either position, responsive to a received code combination of impulses, a second set of selectors, transfer mechanism operative following the setting of said first selectors for transferring said setting to said second selectors, printing apparatus selectively controlled by said second selectors While said first selectors are responsive to a succeeding code combination of impulses, said first selectors being arranged to remain in position independently of any latch devices.
  • a first set of pivoted selectors comprising a pin rality of members each having a marking and spacing position but no normal position and arranged to be positioned and remain in the position set in response to a received code combination of impulses, a second set of selectors and means operative following the setting of said first selectors for transferring said setting to said second set of selectors, said first selectors remaining in operated position until operated to a different position by a succeeding code.
  • a first set of selectors comprising a plurality of pivoted selector bars having no normal positions, a selector disk individual to each of said selectors, transfer mechanism, means responsive to received code combinations of impulses for selectively operating said firstselector bars, said transfer mechanism being thereafter operativeto transfer said operations to said selector disks and printing apparatus operated by said selector disks While said selector bars,are operated in response to a succeeding code combination of impulses.
  • a typewheel In a printing telegraph receiver, a typewheel, a rotatable shaft carrying said typewheel, a stop arm carried by said shaft, selector mechanism co-operating with said stop arm to bring said typewheel to a stop at a selected position and means cooperating with said stop arm operative following the stopping of said typewheel for preventing said typewheel from chattering.
  • a rotatable typewheel responsive to received code combinations of impulses for selectively operating said typewheel to stop position and means operative following the positioning of said typewheel for preventing rebound of said tvuewheel.
  • a typewheel In a printing telegraph receiver, a typewheel, means for rotating said typewheel, a stop mechanism for selectively bringing sai'd typewheel to a stop for a printing operation and a spring operating said stop mechanism for preventing rebound of said typewheel.
  • a rotatable typewheel In a printing telegraph receiver, a rotatable typewheel, a plurality of circumferentially placed stop pins, a stop arm rotating with said typewheel, and arranged to engage a selected one of said stop pins and a spring member carried by said step arm for engaging said stop pin to prevent rebound of said stop arm.
  • a rotatable typewheel In a printing telegraph receiver, a rotatable typewheel, a plurality of circumferentially placed stop pins, a stop arm carried by said typewheel for engaging a select-' ed one of said stop pins, and means operative following the engagement of said stop arm with a stop pin for locking said stop arm against rebound.
  • a first set of selectors responsive to received code combinations of impulses
  • a second set of selectors transfer mechanism operative following the setting of said first selectors for transferring said setting to said second selectors
  • transfer mechanism operative following the setting of said first selectors for transferring said setting to said second selectors
  • a plurality of type hammers one of said first selectors being operated in response to an impulse of said code for selecting one of said hammers, said selector being operative simultaneously with the transfer of said selecting operations for conditioning one of said hammers for operation.
  • a first selector responsive to received code combinations of impulses, a second selector, a source of mechanical power for setting said first selectors in accordance with said code combinations of impulses, a drive shaft normally disconnected from said power source, a second set of transfer selectors and printing means controlled from said drive shaft and means operative following the setting of said first selectors for connecting said drive shaft to said source of power to operate said transfer and printing means.
  • first selectors In a printing telegraph receiver, first selectors, a shaft, a source of mechanical power supplied through said shaft for selectively operating said first selectors in accordance with a received code combination of impulses, a transfer mechanism, a printing mechanism, a second shaft for operating said transfer mechanism and printing mechanism said second shaft being normally disconnected from said source of power and means controlled from said first shaft for connecting said second shaft to said source of power to operate said mechanism.
  • a selector mechanism In a printing telegraph receiver, a selector mechanism, a receiver magnet hav-' ing an armature responsive to receiveghcode combinations of impulses for selectively operating said selector mechanism and means operative at predetermined intervals of each signaling period for locking the armature of said magnet against operation and in its operated position.
  • a selector mechanism In a printing. telegraph receiver, a selector mechanism, a receiver magnetineluding an armature responsive to received code combinations of impulses for actuating said selector mechanism, means operating at predetermined periods of each signaling period for locking the armature of the magnetin operated position and means including said selector mechanism o erative following each operation thereof for locking said selector against operation during the remainder of the impulse period.
  • a first set of selectors having no normal position and responsive to received code combinations of conditions, a second set of selectors, transfer mechanism operative following the setting of said first selectors for transferring the setting of said first selectors to said second selectors, a plurality of type hammers, operating mechanism therefor connected to one of said selectors for conditioning one of said printing hammers for operation in accordance with the code impulse condition which operated said selector, said operation occurring simultaneously withthe transfer of said selecting apparatus from said first set of selectors to said second selectors.
  • a first set of selectors having no normal position and responsive to received code combinations of impulse conditions, a second set of selectors, a source of mechanical power for setting said first selectors in accordance with received code combinations of impulse conditions, means for transferring the setting of said first selectors to said second selectors, a plurality of printing hammers, operating means for said printing hammers in operative relation with one of said first selectors and directly operated thereby in accordance with an impulse of said code for conditioning one of said printing hammers for operation and means controlled by said second selectors for selecting one of a series of printing characters for printing operation by said hammers.
  • a printing telegraph receiver In a printing telegraph receiver, a first set of selectors having no normal position and responsive to received code combinations of conditions, a second set of selectors, transfer mechanism operative following the setting of said first selectors for transferring said setting to said second selectors, printing apparatus variably conditioned for printing operations in accordance with the setting of said second selectors, a plurality of type hammers, control means for said type hammers, a selector operated in response to an added impulse in addition to said code impulses, said selector being directly connected to said control means for variably operating said control means to condition one or the other of said printing hammers for operation against said printing mechanism in accordance with the setting of said selector.
  • a plurality of u-shaped selectors each having projections on either leg thereof and means responsive to received code combinations of impulse conditions and cooperating with said projections for rockin said selectors.
  • a plurality of pivoted u-sh'aped selectors each having lug extensions on either leg thereof and means responsive to received code'combinations of impulse conditions and cooperating with said lug extensions for rocking said pivoted selectors.
  • a plurality of u-shaped pivoted selector levers having no normal position and means responsive to received code combinations of impulse conditions for rocking said selectors in accordancev with said received code to a marking or spacing position.
  • a motor means including said receiver responsive to a'received code combination of impulses for selectively controlling the enerizmg circuit of said motor, mechanical inking means for maintaining the motor circuit in the condition determined by said code, a set of selectors, transfer mechanism for operating said selectors in accordance with the operation of said first means and typewheel printing mechanism variably operated by said selectors.
  • a first set of selectors responsive to received code combinations of conditions, said selectors comprising a plurality of members having no normal positions, a motor and an energizing circuit therefor, said selectors operating in response to a predetermined impulse condition for closing said motor circuit, means for maintaining said motor circuit closed thereafter, a second set of selectors, means for. transferring the setting of said first selectors to said second selectors and a printing mechanism operated in accordance with the setting. of said second selectors.
  • a printing telegraph receiver a first set of selectors each having a marking and spacing position, said selectors being operated to either position in accordance with received code combinations of conditions, a motor for said receiver, said motor being started into operation in response to the first impulse received, a second set of selectors, transfer mechanism operative following the setting of said first selectors for transferring the setting-to said second selectors, printing apparatus selectively operated by sald second selectors while said first selectors are responsive to asucceedin'g code combination of impulses, said first selectors being arranged to remain in position independently of any latching devices.
  • selectors being operated to either position responsive to recelved combinations of conditions, a motor responsive to the operation of said selectors for controlling the operation of said receiver, a second set of selectors, transfer mechanism operative followin the setting of said first selectors for trans erring the setting to said second selectors and printing mechanism selectively controlled by said second selectors.
  • a motor-for driving said receiver said motor being normally in an open circuit
  • a first set of selectors each having a marking and spacing position but no normal position, arranged to be positioned and to thereafter independently remain in position in accordance with received combinations of conditions, means controlled by the first impulse set of selectors, means operative following the setting of said first selectors for transferrin said setting to said second selectors,
  • a motor for driving said receiver said motor being normally in an open circuit, a first set of u-shaped selectors each having a marking and spacing position but no normal position, arranged to be positioned in accordance with received combinations of conditions, means controlled by the first impulse of said code for closing said motor circuit to start said receiver into operation, a second set of selectors, means operative following the setting of said first selectors for transferring said setting to said second selectors, said first selectors remaining in operated position until operated to a difi'erentposition by a succeeding code, printing mechanism variably operated in accordance with the setting of said second selectors, and means controlled by said selectors for reopening said motor circuit.
  • a first set of pivoted u-shaped selectors each having a marking and spacing position but no normal position, and arranged in position and to remain in position in response to a received code combination of conditions, a second set of selectors and means operative following the setting of the first selectors for transferring said setting to said econd selectors.
  • a printing telegraph receiver a first set of pivoted u-shaped selectors havin no normal position, a selector disk individual to each of said selectors, transfer mechanism, means responsive to received codecombinations of impulse conditions for selectively operating said first selectors, said transfer mechanism being thereafter operative to transfer said operation to said selector disks and printing apparatus operated by said selector disks while said selectors are operated in response to succeeding code combinations of impulses.
  • a first set of selectors having'no normal position, a motor, means responsive to received code combinations of impulse conditions for variably operating said selectors, means controlled by said selectors for variably controlling the operation of said motor, a selector disk individual to each of said selectors, transfer mechanism, means responsive to received code combinations of impulses for selectively operating said first selectors, said transfer mechanism transferring the setting of said first selectors to said selector disks, said first selector operating in reponse to a succeeding code combination of conditions thereafter.
  • a first set of pivoted u-shaped selectors having no normal position, a motor, means re;
  • a first set of selectors comprising a plurality of pivoted selector bars having no normal. position, a selector disk individual to each of said selector bars, transfer mechanism, means responsive to received code combinations of impulses for selectively operating said selector bars, said transfer mechanism being thereafter operative to transfer said operation to said selector disks, a printing rotatable typewhecl, a plurality of circumferentially positioned stop pins selectively operated by said selector disks, a stop arm rotating with said typewheel and arranged to engage a selected one of said stop pins and a spring member carried by said stop arm for engaging said stop pins to prevent rebound of said stop arm.
  • a first set of selectors having no normal position, a second set of selectors individual to each of said first selectors, transfer mechanism, means responsive to received code combinations of impulse conditions-for selectively operating said first selectors, said transfer mechanism being thereafter operated to transfer said operation of said first selectors to said second selectors, a rotatable typewheel, a plurality of circumferentially placed stop pins selectively operated by said selectors, a stop arm rotating with said typewheel and arranged to engage said selected ones of said stop pins and a spring member carried by said stop arm for engaging said stop pin to prevent rebound of said stop arm.
  • a first set of selectors a second set of selectors, means for operating said first selectors in accordance with received code combinations of impulses, transfer mechanism for transferring the setting of said first selectors to said second selectors, a rotatable type wheel selectively operated to a stop position in accordance with the operation of said second selectors and means operative following the positioning of said typewheel for preventing rebound thereof.
  • a plurality of selectors having no normal position, meansresponsive to received code combinations of impulses for variably operating said selectors, a second set of selectors, transfer mechanism for setting said second selectors in accordance to the operation of said first selectors, a typewheel, means for rotating said typewheel, a stop arm carried with said type wheel, means controlled by said second selectors for engaging said stop arm for bringing said. stop arm to a stop in accordance with the operation of said second selectors and means operative followingthc stopping of said typewheel for preventing rebound thereof.
  • a plurality of selectors having no normal position, means responsive to received code combinations of impulses for variably operating said selectors, a second set of selectors, transfer mechanism for setting said second selectors in accordance with the operation of said first selectors, a typewheel, means for rotating said typewheel, a stop arm carried with said typewheel, circumferentially positioned stop pins controlled by said second selectors for engaging said stop arm for bringing said stop arm to a stop in accordance with the operation of said second selectors and a spring member carried by said stop pin for engaging said stop arm to prevent rebound of said stop arm.
  • a printing telegraph receiver a first set of selectors, a receiver magnet having an armature responsive to received code combinations of conditions for selectively operating said first set of selectors, means operative at a predetermined interval in each signal interval for lockin the armature of the magnet against operation in its operated position, a second set of selectors, transfer mechanism, means for transferring the setting of said first selectors to said second selectors and printing mechanism variably operated by said second selectors.
  • a first set of u-shaped pivoted selectors having no normal position, a receiver magnet having an; armature responsive to received code combinations of conditions for selectively operating said first set of selectors, means operative at a predetermined interval of each signaling interval for locking the armature of the magnet against operation in its operated position, a second set of selectors, transfer mechanism, means for transferring the setting of said first selectors to said second selectors and printing mechanism variably operated by said second selectors.
  • plurality of selectors having no normal position se uentially operated in accordance with received code combinations of signaling conditions, a plurality of typewheels, means controlled by said selectors for variably operating said typewheels, a printing hammer individual to each typewheel, and
  • a selector responsive to an additional impulse for selectively operating one of the printing hammers against the selected character on said typewheel.
  • a printing telegra h receiver a plurality of u-shaped pivote selectors havwheels, means controlled by said selectors for variably operating said typewheels to a stop position, a printing hammer individual to each of said typewheels, and a u-shaped selector having no normal position and operated in response to a predetermined impulse condition for selectively selecting one of said printing hammers foroperation against its associated typewheel.
  • a prlnting telegraph receiver a plurality of typewheels, a plurality of selectors having no normal position, means responsive to received code combinations of impulse conditions for variably operating said selectors sequentially, means controlled by said selectorsfor rotating said typewheels to a predetermined position and a further selector responsive to an additional impulse for determining which of said typewheels is operated to print each character.
  • a printing telegraph receiver a plurality of typewheels, a motor for driving said typewheels, selectors having no normal positions and responsive to received code combinations of conditions for variably conditioning said typewheels for o eration, a
  • a printing telegraph receiver In a printing telegraph receiver, a plurality of selectors having no normal 'osition sequentially operated in' accor ance with received code combinations of signaling conditions, a plurality of typewheels, a printing hammer for each typewheel, means controlled by said selectors for variably opdition for selectively conditioning "one of said typewhecls for operation.
  • a first set of u-shaped selectors responsive to received code combinationsof conditions, a
  • transfer mechanism operative followin the setting of said first selectors for trans erring the setting of said first selectors to said second selectors, means controlled by said second selectors for selecting a character to be printed and means controlled by one of said selectors for printing the selected character in ofi'set posltion.
  • a printin telegraph receiver a first set of u-shaped selectors responsive to received code combinations of impulse conditions, a second set of selectors, a source of mechanical power for setting said first selectors in accordance with received code combinations of impulse conditions, means for transferring the setting of said first selectors to said second selectors, means controlled by said second selectors for selecting a character for printing and means controlled by one of said first selectors for printing the selected character in ofi'set position.
  • a motor having an energizing circuit; means including said receiver responsive to received code combinations of signaling con-. ditions for selectively controlling said energizing circuit; means for variably opera tin j said printing telegraph receiver in accor ance with received code combinations of signaling conditions to print characters; and means wherebcertain of said characters are printed in 0 set relation with respect to others of said character s.
  • a motor having an energizing circuit; means including said receiver responsive to received code combinations of signaling conditions for selectively controlling said energizing circuit of said motor; means for variably operating said printing telegraph receiver in accordance with received code combinations of signaling conditions to print characters; and means whereby certain of said characters areprinted in ofi'set relation with respect to others of said characters in accordance with the character of an impulse condition accompanying each code combination.
  • a printing telegraph receiver a motor, a circuit therefor; selector mechanism responsive to received code combinations of signaling conditions for selectively operating said printing telegraph receiver to print characters; means controlled by said selector apparatus for selectively controlling said motor circuit; and means whereby said printer prints characters in offset relation with respect to others of said characters in accordance with an im ulse condition accompanying each code com ination of conditions.
  • a printing telegraph receiver a motor; a normally open clrcuit therefor; selector apparatus; an electromagnet responsive to received code combinations of signaling conditions for operating said selector apparatus; means whereby said selector apparatus variably operates said printing tele graph receiver to print characters in accordance with said received code combinations; means whereby said telegraph receiver prints certain of said characters in offset relation with respect to other characters in accordance with a control condition accompanying each code combination; means whereby said magnet operating in response to the first received condition of a code combination closes said motor circuit; and means controlled by said selector apparatus in accordance with a predetermined code combination of signaling conditions for opening said motor circuit,
  • a printing telegraph receiver having characters in letters and figures case position; a motor; means responsive to received code combinations of signaling conditions for selectively printing said characters; means controlled by a control condition accompanying each code combination for determining whether a character in the figures or letters case is to be printed; and means responsive to received code combinations of conditions for selectively controlling the energizing circuit of said motor.
  • a printing telegraph receiver a plurality of selectors having no normal positions; means responsive to received code combinations of impulse conditions for sequentially operating said selectors; a second set of selectors variably operated simultaneously in accordance with the operation of the first set of selectors; a plurality of characters in normal and shift position; means controlled by said second selectors for selecting a character in each position for operation; and means responsive to a control condition accompanying each code combination for selecting one of said selected characters for printing.
  • a series of notched selector disks operated in varying permutations, a plurality of circumferentially positioned selectable members, each of said members provided with a group of antifriction rollers, each roller in said group in- 1 dividual to a selector disk, one permutation of said disks adapted to align a series of notches to permit the rollers on one of said members to enter into the notched space, means to reoperate said disks in accordance with another permutation whereby said operated member is cammed out therefrom.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Common Mechanisms (AREA)
  • Transmission Devices (AREA)
US270389A 1928-04-16 1928-04-16 Selective signaling and apparatus Expired - Lifetime US1821165A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DENDAT623799D DE623799C (da) 1928-04-16
US270389A US1821165A (en) 1928-04-16 1928-04-16 Selective signaling and apparatus
GB21149/31A GB382313A (en) 1928-04-16 1931-07-24 Improvements in printing telegraph apparatus
FR721626D FR721626A (fr) 1928-04-16 1931-08-19 Perfectionnements aux appareils télégraphiques imprimeurs

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US270389A US1821165A (en) 1928-04-16 1928-04-16 Selective signaling and apparatus
GB21149/31A GB382313A (en) 1928-04-16 1931-07-24 Improvements in printing telegraph apparatus
FR721626T 1931-08-19

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US1821165A true US1821165A (en) 1931-09-01

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DE (1) DE623799C (da)
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GB (1) GB382313A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873308A (en) * 1954-05-03 1959-02-10 Ronald G Griffith Switching arrangement for an electric motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873308A (en) * 1954-05-03 1959-02-10 Ronald G Griffith Switching arrangement for an electric motor

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FR721626A (fr) 1932-03-10
GB382313A (en) 1932-10-24
DE623799C (da)

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