US2208348A - Character transmitting device - Google Patents

Description

July 16, 1940. w THIELICKE v 2,208,348

CHARACTER TRANSMITTING DEVICE Filed Dec. 10, 1937 Patented July 16, 1940 UNITED PATENT OFFICE jazoasis l v, V j

cnAnAcTEn TRANSMITTING DEVICE dWflIitTliicIicRe, Berlin, Germany, assignor to C. I

I Lorenz Aktiengesellschaft, Berlin-Tempelhof,

Germany, a, company v y Application December 10, 1937, Serial No.' 1'79,126

I ,InGermany December 22, 1936 4 Claims. (01. 178-83) .The invention relatesto theelectric transmislever 39 in engagementwith the lever 39 and sion of characters composed of a number of imhereby to hold pawl 39' inengagement with the age points or currentqimpulsess More particuratchet tooth 42, thus locking the shaft 1 against larly the invention is concerned with transmisrotation. Shaft Il may be provided with a cam 5. sion devices of the kind having key levers each 44 adapted to restore thepawl 39' to normal of which when operated causes such number or when this is out of engagement with tooth'42. combination of individual signals-to be produced To all the keylevers 6, of which only one is" and transmitted, andit consists in certain feashown, also a bar45, Fig.2, is common which is tures of novelty. which will appear from the folcarried by a lever [B pivoted to a push arm 46 10 lowing description and bei particularlyapointed and an arm 41 formed integral therewith. The 10" out in the appended c1aims,-reference being had arms 46, 43 are under the actionof a spring 48.

o he a p y g drawinglin'which v I' a A two-armed lever 49 is to sustain 'a two-armed 1 S a 112 5 v diagrammatic aindiparlever 59 against the action of a spring 5| and 1 tially s ti n d elevation of p r of an d has a stud 52 for the arm 46 to strike against.

an assembly that constitutes another part there-- tion with a ratch t t th 53 of a shaft 20, A spring 54 tends to hold lever'49 in engagement Each signal or character to be transmitted is with the lever 50 and'hereby tohold pawl '50 in: represented by circumferentialcam portions 26 g t' tfl-t t t t ot 53, th g1 k ment of the invention, Fig. 2. is an elevation of Lever is f m with a pawl 59' f r t 1-5 of a 'disc 2, which are successively-to operate a ingth h ft-120 ag i fl t t t, 20 20* contact l6, thus causing impulses to be produced a cam 55 adapted to restore the pawl 50' to n and transmitted'in accordance with thelength maiwhe this is out of engagement with tooth of the cam portions. For simplicity only one of 53. Lever 5i) isiattached toan angular lever 22 such discs 2 isshown. Disc 2 is fixedly mounted by a spring 5.6QHLever 22 is jointedly connected 25 on a driving shaft l and. carries a ring-shaped with atwoarined lever24by a rod 23. Lever 24 slide 3 fitted with a cam l1 and two projections carries abar 57 that extends along the upper or H], 21. The slide a is of a somewhat oval form free ends of the'arms 1; Thearms Tare hooked and is arranged to encircle a hub 28 of the disc at these ends in order to be engaged by the bar 2. This hub serves to support and guide the slide 51. shaft 20 may be provided with a cam 58 30 3, the proje tions thereof being located in intended to cooperate with a cam 59 of lever 22. grooves formed in the hub. Projection It is in- When key lever 6 is depressed the lever too tended to enter a longitudinal groove ll provided is moved downward. As a result, that arm of in the shaft I. In a recess or cav y 9 O the the lever 39 which has the lug 33 is lowered by disc 2 a spring 4 is disposed that acts to press tappet 34 acting upon this lug, while the lever the slide 3 against a lever 5 and thereby to press arm fitted with lug 8 is raised to face a curvathis lever against a lug 8 of a two-armed lever ture 5' of lever 5. Consequently sprin 4 be- 39. The levers 5, 30 are interconnected by a comes efiective, shifting slide 3 and lever 5 tosprin 31. To each disc 2 a k y l ver 6 i alward the lug 8 until lever 5 comes against this lotted by t intermediary Of a arm 7 Carried lug. In this way the projection ll! of slide 3 is y level 5 and pivotally connected therewith A caused to enter the groove ll, whereby disc 2 40 p g 32 acts to hold arm 1 in engagement W th is clutched to the shaft l, projection l0 bearing a lug 33 of th lev r 30. rm 1 b g f m w h against hub 23. Immediately thereafter the a tappet 34 to engage this lug. pawl 39' is lifted out of engagement with tooth To t arrangement as thus far described a 42, thus allowing shaft 1 and disc 2 clutched 45 bar 34 is common that exte ds a on the ow o thereto to revolve in the direction of the arrow levers 6 and is car ed o a two-armed level and to operate contact IS in accordance with the pivoted to a p arm 35 and an arm 35 formed cam portions 26. To such end the lever 5 when in therewith The arms 35, 36 r n r moved toward the raised lug 8, as described, is

the action of a spring 31. A two-armed lever 38 acting n th leverage I2, 35, 36, 38, 39 by means 50 is to sustain a two-armed lever 39 agains e of bar 34. Lever I2 causes the arm 35 to come action of a spring 40 and has a stud 4| for the against stud 4|, whereby lever 38 is turned to rearm 35 to strike against. Lever 39 is formed lease lever 39. Arm 36 serves to support the rewith a pawl 39 for cooperation with a ratchet leased lever 39. Spring 40 now acts tolift the tooth 42 of shaft l. A spring 43 tends to hold pawl 39' out of engagement with tooth 42 When 55 shaft I is finishing one revolution, cam 44 will restore the pawl 39' into the locking position shown in Fig. 1. At the same time cam IIbearing against lever 5 acts to restore the system into the normal state represented in the drawing, spring 4 thus getting tensioned afresh, while projection Ill is moved out of engagement with groove I I. The levers 'I, 8 reassume theirposition of rest immediately after lever 5 is relieved of the pressure by which it has been depressed.

When depressing the lever 6 also the leverage I8, I6, 4?, 49, 50, Fig. 2, is operated by lever 6 depressing the bar 45. This operation is the same as that described with reference to the leverage I2, 35, 36, 38, 39, Fig. 1, and thus causes thepawl 50' to be lifted out of engagement with the ratchettooth 53. As a result, shaft 20 is allowed to rotate while at the same time the leverage 22, 23, 24 by means of the bar 5'! acts to engage the hooked endsof all the arms I exceptthe one that has been depressed. It will thus be' impossible after'actuating one of the key levers 6 immediately to actuate another. When shaft I is finishing one revolution, cam 55 acts to restore the pawl 50' into the position shown, thus locking this shaft against further rotation. Lever 50 hearing against the lever 22 causes the leverage 22, 23, 24, 51 to reassume the state represented in Fig. 2, the arms 'I thus becoming free of the bar 57 so that now any key lever B can be depressed. The arrangement is such that at this moment the rotating disc 2 shall have turned only through a small part of one revolution. A second lever 6 may then be actuated, since the appertaining slide 3, that is, the slide that belongs to such second key lever and the respective disc 2, cannot engage the groove I I until shaft I has made a completerevolution.

On depressing this second lever 6 all the other. levers 6 are locked in the manner just described.

The arrangement thus allows of emitting any desired number of characters or combination signals one after another and in immediate succession, each transmission entailing in a sense ani other kept ready by the manipulation of one'of the key levers. The whole of the discs 2 thus constitutes a sortof rotary storage device.

Means may be provided whereby after the emission of one character further emission is stopped for some time in order that in the case of a key being depressed too long yet the appertaining character shall be emitted only once.

The invention is adapted for use with any teleprinting methods carried out with the aid of a sending keyboard of the kind usual in type writers.

. What is claimed is: I

1. A character transmitting device comprising a driving shaft, a number of rotary storage members each representing a definite character, means for clutching each of these storage members to saidshaft, an assembly of key levers, each thereof beingallocated to one of the said storage members, means undercontrol of these key levers for rendering the said clutching means effective, means under control of a depressed key for rendering any one of such clutching means ineffective while rendering another clutching means efiective, and means for rendering anyof such ineffective clutching means effective immediately after" the termination 'of the preceding clutching action.

2. A device according to claim 1, having a locking device under control of any one of the key levers and adapted to lock these, except any one thereof that has been operated, during part of one revolution of the driving shaft.

3. A device according to claim 1, having a looking device under control of any one of the key levers and adapted-to lock these, except any one thereof that has been operated, such locking device comprising a bar adapted to engage the key levers, a leverage under control of any one of the key leversand joined to thisbar, and a cam shaft adapted to control said leverage during part of one revolution of the driving shaft.

4. A device according to claim 1, having a looking device adapted to act upon the driving shaft and means, under control of any one of the key levers, for controlling this locking device.

WILLI THIELICKE.

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