US2343404A - Translating device - Google Patents

Description

March 7, 1944.. Q R DQTY TRANSLATING DEVICE Filed March 31, 1943 2 Sheets-Sheet 1 ATTORNEY March 7,1s44. c, R, Don 2,343,404

TRANSLAI'ING DEVICE Filed March 31 1945 2 Sheets-Sheet 2 MY v' ATTORNEY Patented Mar. 7, 1944 TRAN SLA'HNG DEVICE Charles R. Doty, Yonkers, N. Y., assignor to International Business Machines Corporation, New York, N. Y., a corporation or New York Application March 31, 1943, Serial No. 481,259

1Claim.

This invention relates to a translating mechanism for translating into code the characters printed by a typewriter.

' lustrated in the accompanying drawings, which disclose, by way of example, the principle of the invention and the best mode, which hasbeen contemplated, of applying that principle.

In the drawings:

Fig. 1 is a vertical section through a power driven typewriting machine, in which a translating mechanism in accordance with my invention has been incorporated.

Fig. 2 is a horizontal section on theline 2-2 of Fi 1.

Fig. 3 is a vertical section on the line 33 of Fig.

A translating mechanism according to the present invention, which was disclosed in my Patent 2,278,978 granted April "I, 1942, may be embodied in a standard International electric writing machine, such as the one disclosed in Patent No. 1,936,466. Such a typewriter comprises a set of type bars, one of which is shown at I6, pivotally mounted at I8a so as to print upon a sheet of paper held by the platen P. For each type bar there is a cam lever I2 or I2a, provided with a rotatably mounted cam II or Ila, adapted to coact with a power roller Ill constantly driven in the direction of the arrow by a motor (not shown). The cam levers l2 and I20. are pivotally mounted on stationary rods I3 and I30, and their upper arms are connected by links I to individ ual bell crank levers I4 pivotally mounted on a rod I40 supported by a cross bar I4I of the frame. The upper end of each bell crank lever I4 is connected by a link I42 to an individual bell crank lever I43 pivoted at I44 to the related type bar I6. The opposite end of the bell crank lever I43 is articulated at I45 to an individual arm I46 pivotally mounted on a, fixed part I41, forming a I40, with their forward ends guided in slots I50 01! a comb I5I and normally held up by individual coil springs I52. Each cam lever I2 or I2a has pivoted to it an impeller arm I8 or Illa, which is urged by a coil spring I9 in clockwise direction. The lower end of the impeller arm bears upon the lower one of two pins 29 projecting rigidly from the cam and tends to rock the cam clockwise. The cam is normally latched by a latching lever 23 or 23a having a pair of lugs 22 and 28, or 22a and 28a, cooperating with lugs 2| and 21 on the cam, to control the movement of the latter in a well known manner. When a key is depressed the lower arm of the related cam lever I2 or I2a executes a movement outward from the roller III, then returns to the normal position shown.

Thetranslating mechanism accordingto my invention is, in the present embodiment, mounted beneath and behind the power cam lever mechanism just described. It comprises a set of actuators 50 slidably guided at their right orforward ends'in individual slots of a comb 5i and at their rear ends in complemental grooves in upper and lower bars 52 and 53 of a bearing bracket. The alternate actuators have upstanding fingers 54 and 55 to cooperate with rollers 58 on downwardly extending arms of the cam levers I2 and I2a, which occur alternately along the power roller. A spring 51, stretched between two lugs 58 and 59 on each neighboring pair of actuators draws the two actuators forming a pair in opposite directions, until they are stopped, in normal position, by the engagement of their respective fingers 60 and GI against the lower bar 53. In this positoggle type bar actuator. A spring I48 stretched between the bell crank lever I4 and a stationary rod I49 normally holds the type bar operating mechanism in the position shown. When the bell crank lever I4 is rocked clockwise by its related cam lever I2 or He, the type bar is thrown against the paper on the platen.

For each cam lever I2 or I2a there is a key lever n, the key levers all being pivoted on the rod tion of the actuators the fingers 54 and are close to the rollers 56.

The left ends of the actuators 50 have large square openings 62 forming a box within which are positioned six slides 65 individually identified by subscripts 1, 2, 3, 4, 5 and 6. The slides 65 are guided for limited movement parallel to the axis of the power roller III, in slotted bearing plates 66 and 61 (see Fig. 3) on the side walls 68 and 69, the side walls being apertured to allow the slides to extend through them. The slides 65 are pulled to the left by individual springs 10 an-,

chored to a side frame member indicated by dot and dash lines at H. Within the zone of operatiOn of each actuator 50 one or more of the slides 65 have inclined cam edges I2, these cam edges being arranged on the slides in accordance with a combinational code, so that when a particular actuator is moved by the related cam lever l2 or I241, a particular combinationof the'slides .l-l will be cammed to the right. The combination is ditlerent for each actuator. The cam edges in the successive zones of action of the diflerent actuators are located alternately on the front and rear sides oi the slides, conforming to the operative movement of the respective actuators, which is either rearward or forward, a.c cording to whether the actuator is operated by a cam lever I! or a cam lever i211.

; The combinational movement or the slides iii-a is utilized to operate a set of code elements. In the present case these code elements are pairs of contacts ll individually identified by subscripts 1, 2, 3, 4, 5 and 6. The contacts are mounted upon insulating supports II and 82 on the side plate '9. One member of each pair of contacts has a piece of insulation 83 at its end bearing against the end of the related slide 651,: etc. There is also a pair 01' common contacts 84 mounted on an insulating post 85 on the side wall I and one element of this pair oi, contacts carries a strip of insulation 80 positioned so as to be moved by any one or more 01' the slides 85. Thus, the combinational movement oi. the slides "1-; results in the closure of a certain combination or the pairs of contacts Iii-a and also of the common contacts It, the timing being such that the contacts 84 close after all of the contacts ll.

While there have been shown and described and pointed out the fundamental novel features of the invention as applied to a single modification, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit oi. the invention. It is the intention therefore to be limited only as indicated by the scope of the following claim.

What is claimed is: In a transmitter, in combination with a keyboard mechanism, a driving mechanism comprising a power driven roller, cam levers having individual rotary cams to rock the respective levers by rotating against said roller, the levers being arranged aliernately on'opposite sides 01' the axis of the roller and those on one side of the roller being rocked oppositely to those on the other side, and key operated means for selectively releasing the cams for engagement with the roller; a set of code elements, a set or code element operating slides, one for each code element, said slides being mounted in a single group for individual longitudinal movement parallel to the axis of said power drivenroller, to operate their respective code elements; a set of actuators, one for each of said cam levers, means to guide said actuators for reciprocating movement normal to the axis of said roller, said cam levers having means coacting with their respective actuators to cause the latter to execute operative movements guided by said .guide means, the operative movements of the actuators operated by the cam levers on one side of the roller being opposite to that of the actuators operated by the cam levers on the other side of the roller; said slides having inclined cam edges thereon for coaction with said actuators to impart said longitudinal movements to said slides; there being a cam edge or group of cam edges for each actuator, arranged on the slides in accordance with a combinational code, the cam edges co-, acting with actuators which execute an operative movement in one direction being on the opposite side of the slides from the cam edges coacting with actuators which execute an operative movement in the opposite direction.

CHARLES R. DOTY.

Images