US2192353A - Printing telegraph receiver - Google Patents

Description

March 5, 1940. E. E. KLElNscHMlD-r PRINTING TELEGRAPH RECEIVER Filed June 25,- 1937 2 Sheets-Sheet l INVENTOR- Zwam/ //ewwC/w/Qf March 5, 1940.

APRINTING TELEGR Filed June 25, 1937 E. E. KLEINSCHMIDT APH RECEIVER 2 Sheets-Sheet 2 D Sniff' t4 Rel ease Cam I3 Sal Calmv l2 @ser Cam J n eel. Came lo ideas: Cam

las Fh'nr com LV as ship' cam so :mpcom FT g. E.

INVENTOR.

mme Mu. s, 1940 UNITED STATE s PATEN oFFlcE IZMI uwlmmmmnm Application June 25; 1937, Serial No. 150,384:` 31 Chim!- (CL 17a-$4) 'lhis vinvention relates to telegraph receivers and in particular to the type operated by permutation code selecting mechanisms. The present disclosures are improvements applicable in par- "3 ticular to the inventions disclosed in my prior applications #18,888 and #95,883. 'I'hese im- .provements are however applicable to other types of apparatus and it is intended that use of" the inventions herein disclosed in other types of l0 'apparatus .shall come within the. scope of this application.

A principal object of my invention is to provide a novel telegraphreceiver of the type operated by permutation code selecting mechanisms lI-in which the typewheel carries a plurality of rows of type and wherein the selecting mechanism is operable to mov'e the typewheel bodily as well as to rotate it in the selection of a character to be printed.

Another object of my invention is to provide a telegraph receiver of the type described in the preceding paragraph vwherein the selecting mechanism is operable under' the control of one of a plurality of code Iunits to move the typewheel bodily a distance of one row of type and is further operable under the control oi' the remainingv c'ode units to rotate the typewheel to a desired rotary-position and/or to move the typewheel bodily a distance of two rows of 0 type.

A further object of my invention is to provide in atelegraph receiver of the present type, a novel motion producing assembly operatively associated with a bodily movable typewheel carry- Il ing a plurality of spaced rows oi' type 21d operable under the control of -a code se ting mechanism for moving the typewh into any one of a plurality of positions corresnding to the rows of type thereon.

A still further object of my invention is to provide in a telegraph receiver-'of the present type, a novel typewheel and ,controlling means therefor wherein said typewheel is provided with a plurality of axially s ed rows of type, more than one of which are 'letters and more than one of which are figures and wherein the controlling means is operable to both move the typewheel bodily as well as to rotate it to thereby select the proper character from any one of the rows of 50 type. 4

Another object of my invention is to provide a telegraph receiver of the present type, a novel selecting mechanism including a rotatable member arranged to drive a rotatable typewheel and 55 carrying axially spaced stop means and also in- I/all of the frame work being eliminated so 'as to cluding means cooperable with said stop means to locate the typewheel in a desired rotary posi- .tion and wherein said selecting mechanism completes a selecting cycle during one-half a turn of the rotatable member and the stop means. A further object of my invention is to provide in a telegraph receiver of the present type a novel selecting mechanism including stop devices senovel telegraph receiver of the type Operated by u permutation codeselecting mechanism wherein means are provided for registering the typewheel during printing and also for blocking printing during spacing and function operations.

More specically it is an object of this invention to provide inra telegraph receiver of the type described inl the preceding paragraph a novel combined registering and, blocking mechanism which is cooperable directly with a rotatable and axially movable typewheel which functions to positively register the typewheel in any n one of its selected axial or rotary positions during printing and which is further operable to block printing'v during a spacing or function operation.

Other objects will appear in the following den scrlptin and in the appended claims:

Referring tothe drawings.

1 shows the apparatus in perspective,

show the parts more clearly. s

Figure 2 is a plan view showing in particular the parts for shifting the typewheel.

Figure 3 is a side elevation 'showing the printing and blocking mechanism.

Fim-es 4 and s show the parts or the selector 0 mechanism for shifting the typewheel axially.

- Figures 6 and 'I show details of the combined. registering and blocking mechanism.

Figure 8 is a timing chart. Figure 9 is a detail of the normal stop lever.

Figure 10 is a detail of the figure shift cam.

Figure li is a detail of the first selection shi. cam.

Referring now to Figures l, 2 and 3, gear I, w loosely mounted on shaft 2, is rotated in a clockwise direction at a constant speed by a motor not shown, an idler gear 3 connects gear i with gear 4, also rotated in a clockwise direction and loosely mounted on shaft 5; gear l tends to rotate shaft 2 by a friction coupnng s, and gear 4 tends l 2 2,199,358 to rotate shaft 5 by a friction coupling 1. Shaft 2 has fixed on it a cam assembly 8 and an orientable stop member 9. Cam assembly .8 consists of a latch release cam I0, four stop lever cams II, a normal stop lever cam I2, typewheel shift lever cam I3, and release lever cam I4. Latch release lever I1 rotates on stud I5 and operates latch I6. Four stop levers I9 are mounted on stud I5 and each have an elongated bearing aperture which permits a slight lateral displacement as well as rotation on stud I5. Normal stop lever I8 rotates on stud I5. Typewheel shift lever 2l, also mounted on stud I5, has an elongated bearing aperture the same as stop levers I9 and, is connected by pin 22 to the bifurcated end of lever 23. Release lever 24`rotates on stud I5 and bears against latch 25. Latch I6 and latch 25 rotate on stud 26 and are held in their unoperated positions by springs 21 and 28. Springs 3l hold stop levers I8 against the lower part of stud I5 and stop 32. Spring 8 holds typewheel shift lever 2| against the lower part of stud I5 andy stop 32. The relative positions of the cams are shown in the timing chart, Figure 8.

A receiving magnet 34 isl connected by wires' 35'in the circuit of a transmitter not shown.

Armature lever 36 has a bearing on stud 31 and has attached to it latch plate 8l and-fulcrum plate 39. Armaturelever 36 when retractedby spring 4I rests against stop screw42. A'stop lever` 43 pivoted on stud 44 lies in the path of stop member 8 and holds shaft 2 against rotation when they are in engagement. Stop lever 43 has an extension 45 that rests on latch plate 38 when armature lever 38 is unattracted. as shown in Figure 1. When armaturelever 36 is attracted, spring 46 pullsl extension 45 of stop lever 43 off latch plate 38 and stop lever 43 is disengaged from stop member 8, leaving shaft 2 free to rotate with gear I until lug 48 on stop' member 8 engages with cam extension 48 of stop lever 43 to restore stop lever 43 to its normal position, as shown in Figure 1. Stop levers I8 and typewheel shift lever 2| are each provided With a bearing, ledge 5I. Stop levers I8 and normal stop lever I8 are each provided with stop extension 52 and latch extension 53, as shown in Figure 9. The upper end of latch I6 forms a bar which extends across and engages all of the latch extensions 58A of stop levers I8 and normal stop lever I8. The fingers of stopwheel 54 rotate in the path of stop extensions 52 of stop levers I8. Stopwheel 54 is ilxed to shaft' 5 and comprises four rows of stop fingers, each row of stops doubling in number over the previous row, the first row having two stops, the next 4,'

the next 8, and the ,last 16 stops. Two additional stops 55 are provided which engage with normal stop lever I8 in the normal stop position and hold shaft 5 against rotation, as shown in Figure l. When armature lever 36 is moved against stop screw 42 it rst releases stop lever 43 from engagement with orientable stop member 8, permitting shaft 2 and cam assembly 8 to rotate. Cam I3 thereupon operates typewheel shift lever 2| andthereafter the four cams II operate the four stop levers I9 in succession. If armature lever 36 remains against stop 42, levers 2| and VI8 will pivot on latches I6 and 25, the elongated bearing aperture in the levers permitting them to move without rotation on stud I5. When, however, armature lever 36 is moved to the attracted position away from stop 42, after it has released stop lever 43, fulcrum 39 will be under bearing ledge 5I and if this happens when one 59 also fixed td shaft 51 has a cam extension 6I finger assembly 54 and shaft 5 to rotate. Stop-- extension 52 of the operated stop lever I8 will then be in the path of its yrow of stop ngers forming part of stopwheel 54 and will again stop shaft 5. The operated stop lever I8 will then become latched on latch I6 and remain there until the next stop lever I9 is operated which, when operated to fulcrum on fulcrum plate 38, will place its stop extension in the path of the stopwheel and release the previously set stop lever. Latch extension 58 will then rest on latch I6 and remain there until the next stop lever is operated to fulcrum o n fulcrum plate38 or until latch I6 is operated by latch release cam I8, which occurs at the end of the cycle as shown in the timing chart, Figure 8. By varying the operation of the fo'ur stop levers through the action of armature lever 36,- stopwheel 54 and shaft 5 can be set in sixteen different positions inelud` are obtained and stopwheel 54 makes a maximum of one-half revolution during each selecting cycle. A more detailed explanation of the operation of stop levers I8 and stopwheel 54 is given in my applications #18,888 and #$5,883. To obtain 32 selected positions during each selecting cycle, the first selection which is operated prior to the operation of stop levers I9 controls a shifting mechanism to shift the printing to a second row of type. This operation is controlled by the typewheel shift lever 2l and release lever 24.

Asv in my previous applications'above referred to, it is intended to operate this telegraph receiver in circuit with a transmitter sending a nocurrent start impulse, ve selecting impulses which may be either current or no-current according to the character transmitted, and a cur- -rent stopucondition.,l It is to be understood that this arrangement may be varied as desired and that the number of selecting impulses may be increased or reduced in accordance with the code to be used.

Typewheel shift lever 2li connects with shaft 51 through lever 23 which is fixed thereto, a lever which is in engagement with shift bar 62 at one end thereof; the other endfof shift bar 62 is connected by pin 58 to a pair of levers 63 and 64; lever 63 isconnected to lever' 65 by pin 61 which is guided in a slot 66 of frame 1I. A further lever 66 is connected to lever 65 by a pin 12 and to frame 1I by pin 13. Each of the levers 63, 64,

and 66 is provided with projections 14which abut when the levers are in the position shown in Figures l and 2. Levers 63,64, 65 and 66 form the links of an aggregate motion assembly for shifting to different rows of printing. A iigurev shift bar 15, the operation of which will belater explained, is connected to levers 65 and 66 by pin 12. To lever 64 is attached shifting rod 16 which slides in frame 1I and has fixed to its outer end for 11 that engages with slotted hub 18 forming part of typewheel 8I which is rotatably and slidably mounted on stud 82. Also ,u

' outer end rests on the periphery of cam |88, also iixed to typewheel 8| is a pinion 83 which meshes in a two to one ratio with gear 8'4 xed to shaft so that typewheel 8| will make one revolution when shaft 5 revolves through an arc of 180 degrees. Shift cam 80 fixed to shaft 2, shown in detail in Figure 11, engages shift bar 62 when it is moved into its path by cam extension. 6|. 'Shift path of shift cam 80 which thereupon engages.

bar 82 when operated spreads lever 53 and 54 to move shift rod 16 and typewheel 8| the space of one row of characters.

The operation of the shift is as follows:

The first selective signal of the code is used to control the operation of the typewheel shift and when this first signal is of a type which moves armature lever 35 away from stop 42, fulcrum plate 39 will be under bearing ledge 5I when lever 2| is operated by cam |3 and it will pivot. on fulcrum plate 39, which is the selected operation of lever 2|. Lever 2| will, through pin 22 operate lever` 23 which rotates shaft 51, raising leverI 59 so that cam 8| will move shift bar 82 into the shift bar 62, and moves it to spread levers 89 and 84 to shift typewheel 8| along stud 82 a space equal to one row of type. Cam 80 will hold typewheel 8| in the shifted position until after the printing operation, as shown at A and B in the timing chart, Figure 8. After the complete selecting and printing cycle but before the next engagement ofcam I3 with lever 2|, cam |4 operates release lever 24 to operate latch 25 and release lever 2| from its operated position.' moving lever 23, lever 59 and cam extension 8| downward. If in the following code selection the first signal is of a type that will move armature lever 99 against stop 42, fulcrum plate 39 will be out of the path of bearing ledge 5| when lever 2| is operated and will not pivot thereon but pivot on the point of latch 25 which is the unselected operation of lever 2|. Lever 28 and lever 59 will therefore remain in the downward position, shift bar 82 will be drawn out of the path of cam 89 i by spring 19 and typewheel 8| will be moved back the space equal to one row of type by the actionl of spring 19.

Cams I9 and |4 are formed so that lever 24 is operated just before lever 2| is operated so that shift bar 82 is operated immediately after it is released when successive `code combinations include the selected operation of lever 2|.

Typewheel 8| has four 'rows of type, twofadjacent rows are letters and-two adjacent rows are figures. There are sixteen selective positions in the circumference, twenty-six letters are distributed over the two rows containing letters. The iigures and punctuations are distributed over the other two rows. The selecting of any of the rotary positions of typewheel 8| and the shifting to an adjacent row have already been explained. To shift the typewheel from letters to figures,

' or from iigures. to letters printing positions, iigure shift bar 15 and cam89 are provided. Shift bar 15 is shown in the `letters shifted position in Figures 1 and 2 and it is heldthere by spring which holds shift bar 15.k rearward and yside- Ways out of the path of cam 89 and holds levers 85 and 66in the position shown in Figures 1A and v2. Two function levers 9| and 92, both mounted on stud 86, control the setting of shift bar 15 with relation to cam 89. The outer end of function lever 9| rests on the periphery of camk |08 attached to shaft 2 and having a notch I5 therein into which end of lever 9| is pulled by spring ||2 when lever 9| is to be operated. Function lever 92 is provided with a similarspring ||8 and its fastened to shaft 2, and provided with notch I4 into which lever 92 is pulled when it is to be operated. Function lever 92 has a cam faced extension ||0 attached to itsside which engages with shift bar 15 to place it in the path of cam 89 when lever 82 is operated. Function lever 9| has an extension attached to its side which lies l under shift bar 15 and raises it to disengage ledge 88 from edge` 10 of the depressed portion of plate 50 when function lever 9| is operated. When shift bar 15 is moved by cam ||0 it drops into the recessed portion ofplate 60, sliding therein when operated by cam 89 until it becomes latched by the engagement of ledge 89 with the outer edge 10 of plate 50. Spring 90 holds shift bar 15 in this position until function lever 9| operates and its extension lifts shift bar 15 fromengagement with the edge 10 of plate 50 whereupon spring 90 returns shift bar 15 to the position as shown in Figures 1 and 2.

Two function selecting discs 81 and 88 are fixed to shaft 5. Function selecting disc 81 is provided with two slots 98 into either .of which extension 94 of function lever 9| is pulled when letters shift is to be operated. Function disc 88 is provided with two slots 95 into either of which extension 98 of function lever 92 is pulled when figures shift is to be operated.

To include the operation of the selection of a function such as figures shift, let ters shift, or a signal, rod 81 is provided which is connected to fork 11. Rod 91 has collars 88, 99 and |02 attached to it which will, in shifting oftypewheel 8| along stud 82, assume positions relative to extension |03 of lever 9| and extension |94 of lever' 92, and extension |05 forming part of signal lever |05 either to permit or block their operation. In the arrangement of the parts as shown, both the letters shift and the figures shift include the selected operation of lever 2| and shift bar 52 will be operated whenever a s'hift function is to be selected, -collar 99 will therefore be out of the path of extension |04 when the figure shiftA is selected.

When 'typewheel 8| is shifted to print from the first row of figures, collar 98 will block extension |095 but when it is set to print from the second row of figures, which includes the first selection and therefore the operation of lever 2|, collar 98 will pass beyond and out of the path of extension |88 permitting lever 9| to operate the letters shift when that is selected.

To operate the figures shift, a combination of impulses comprising a rio-current start impulse, two current impulses. a no-current impulse, two current impulses, and the normal current stop condition, is transmitted to magnet 34. The nocurrent start impulse will release armature lever 95and permit stop lever 43 to release cam assembly 9 and shaft 2 which will then rotate-with gear intimed relation with the impulses to follow. -Referring to Figure 1 and the timing chart, Figure l8, cam l2 first releases normal stop lever I8 which then comes to rest on latch I5. Thereafter cam I4 operates latch release` lever 24 and operates latch 25 to release lever 2|. The first current impulse will attract armature lever 35 and place fulcrum plate 89 under the ledge 5| of lever 2| whereupon cam |3 operates lever 2| which will fulcrum on fulcrum plate 39 to operate lever 23, turn shaft 51 and raise lever 59, pressing its cam extension 8| against the' side 90 until it is operated thereby. 'lhe operation of cam 90 on shift bar 92 carries onf'during the rest of the selecting` cycle butis completed before a function or printing operation is started.

The next impulse being also current, holds armature lever 99 attracted and the first cam will operate the first stop lever |9 which will fulcrum on fulcrum plate 99. Latch extension 59 lof the operated lever I9 will press latch |9 outward and permit normal stop lever |9 to drop by the action of its spring 9| thereby releasing stopwheel 54 which will then rotate through an arc of 99 de grecs when one of the stop fingers in the rst row of stopwheel 54 will engage with the operated stop lever I9. The next impulse received on magnet 94 being no-current will allow amature lever 96 to retract and when the next or second cam operates the second stop lever I9, fulcrum plate 39 will be out of the path of bearing ledge 5|, the operated stoplever |9 will fulcrum on latch I9 and no other operation takes place. The two following impulses being currentwill cause lthe remaining two stop levers I9 to fulcrum on fulcrum plate 99 in succession, each placing its stop extension in the path of the stop fingers of stopwheel 54, releasing the previously set stop leversl the first .permitting the stopwheel to turn through an arc of 22% degrees, and the last, through an arc of 11% Vdegrees. Stopwheel shaft 5 and its attached parts will now have turned 123% degrees and shiftbar 62 has moved rod 18, fork 11. typewheel 9|, rod 91 and collar 99. Typewheel 9| is now set in position for printing from the second row of letters. However since the selection just described is for operating the figures shift, printing is blocked in avmanner to be described later. One of the slots 95 of disc 99 will now be in alignment with extension 99 of function lever 92. After shaft 2 and its attached 4parts have revolved4 through an arc completing the operation of cams on levers |9, notch ||4 of cam |09 will be under function lever 92, and since extension 99 of lever 92 is now opposite slot 95, function lever 92 will be operated 4by its spring ||9 and cam faced extension will move shift bar 15 into the path of cam 99 which will move it to spread levers 96 and 55, the movement'of figure shift bar 15 being completed during the next selecting cycle, as shown in timing chart, Figure 8.

Referring to Figures l and 2, signal lever |99v tion levers 9| and 92. Signal lever |09 is prof vided with an extension 2| and a bell clapper extension |22 which strikes bell |29 `when it is operated by spring |24. Extension forming l part of signal lever |09 lies in the path of collar |02 which permits operation of signal lever |09 when' the selected function of stopwheel 54v places one 'of the slots ||9 opposite extension |2| only in the fully shifted position of typewheel 9|, that is, when both shift bars and 52 have been operated.

Referring to Figures 1, 2 and 3, printing of a selected character is accomplished by print hammer .|9| which is pivoted on shaft |92. A print control lever |34 also attached to shaft |92 rests on the periphery of cam |35 during the selecting operation and is pulled into notch |99 by spring |31. Notch |36 is so located on cam |35 that it operates print hammer |9I directly after the last cam has operated the last stop lever I0. ink typewheel 9| in the usual manner; 4,A paper tape |99 receives the impression from typewheel 9| lwhen print hammer |9| is operated to print a character. APaper feed wheel |42 pivoted on bearing screwv |49 and pressure roller` |44 are provided to feed the tape between printing oper ations. A ratchet wheel |45 is` attached to paper feed wheel |42.' A feed pawl |49 is attached to print hammer |9| and rotates the ratchet one tooth for each printing operation and for the space operation. Retaining pawl |41 holds the ratchet in place between the operations of feed pawl |49. To register the typewheel when printing and to prevent printing when a function isto be operated. typewheel 9| is provided` with holes |5| located alongside each row of characters, there'belng'no such holes in the position correspending to the positions of the typewheel that are selected when a function is to be operated except that when a spacing operation is selected a shallow hole is located in that selected posi tion. A registering and print blocking lever |99 is pivoted on stud |54 and normally cammed outward by finger .|51 forming a. part of print hammer |9| to the position shown in Figure 3,

against the tension of spring |55. A pin member |59 attached to lever |59 is pressed against the space between the rows of type of typewheel l Illand enters a hole |5| that registers with a selected character for each printing operation,v thereby correcting the position of typewheel 9|V with relation to print hammer |9I. When print hammer |9| is operated and pin member |59 enters one of the holes that are set opposite it,

to move out of thepath of projection |59 topermit the full movement of print hammer |9| as shown in Figure 6. When, however, a function operation is selected and print hammer |9| is operatempln member |56 will not enter a hole of the typewheel 9| but will strike the periphery thereof,` permitting only a slight. motion of lever |59, insuflcient to place it out of the path of projection |59 which will then strike the end of lever |59 blocking the print lever |9| sothat spacing and printing is prevented. When a spacing operation is selected, typewheel 9| willbe positioned so that the shallow hole |5| will be opposite pin member |59, and when print hammer |9| is operated, pin member 59 enters the shallow hole and lever |592. will move to a point where the projection |59 will strike the recessed portion |59 of lever |59, permitting print hammer |9| to move a sufficient distance to cause feed pawl |49 to feed the paper feed wheel |42 one tooth, thereby spacing the paper, but preventing its striking the paper for printing as shown in Figure '7. It is obvious that the registering and print blocking lever |59 may be operated directly from a separate cam such as cam |95 in which case a lever similar to print control lever |94 would be attached to lever |59 to `operate it; finger ||i`i on print hammer |9| would be removed.

It is to be understood that the foregoing de'- scribed mechanisms are capable of a wide variety of applications'other than those described herein by way of illustration and that the invention is not limited to the particular arrangements de- -An inking roller |99 isfy provided to dvi s c df come within the meaning and range o! equivalency of the claims are intended to be embraced therein.

What is'claimed and desired to be secured by United States Letters Patent isiA 1. A telegraph receiver comprising a type carrying member having a plurality of rows oi type thereon, a permutation code selector having a plurality of selective operationavmechanical means controlled solely by the iirst selective operation oi said code selector for shifting the printing position of said member to one of said rows of characters, and mechanical means controlled by all of the remaining selective operations of said code selector for positioning the printing position to one of the characters in a row.

2. A telegraph receiver comprising a rotatable type carrying member provided with a plurality of axially spaced rows of type, a permutation code selecting mechanism including mechanical means for setting said member in different rotary positions in accordance with the selective operation of all but one o! the units o! a code, and shifting means operated by mechanical means solely under the control of said one 'unit in the code for shifting said member to a selected row of type.

3. A telegraph receiver comprising a selecting mechanism, printing means including a typewheel provided with groups of type, a series of stops adapted to directly and progressively control said printing means, stop means controlled by said selecting mechanism for, cooperation with said series of stops, and means operable by the selecting mechanism to control selection from one of said groups during the operation of the series of stops on the printing means.

4. A permutation code selecting mechanism for use with a rotatable typecarrying member provided with axially spaced rows of type comprising means for directly and progressively controlling the rotary .pos,ition of said member in )accordance with the selective operation oi' all but one-i the units in a code,l and means operable by said one unit to shift said member to another row of type.

5. In a telegraph receiver comprising a rotary j typewheel 4having a plurality of rows of type and adri've-shaft for said typewheel provided with s ops in a series of rows which progressively double in number, a selecting mechanism operated by permutation 'cod'efsignals including means controlled by all but -one of the code units for controlling therotary position of the typewheel thru said stops and shift mechanism controlled by said lone unit of the cdtle for controlling the position'of the typewheel as to the rows of type thereon.

6. In a telegraph receiver of the type wherein selection of characters is controlled by a permutation code selector, a selecting mechanism, a bodily movable type wheel carrying a plurality of rows of type, and a-mechanical motion producing assembly including means selectively operable under the control of said selecting mechanism to move said type wheel so as to position any one of said rows of type in printing position, said motion producing assembly comprising means operable under the control of only one of the units of a code to move said type Wheel a distance equal to one row of type and means operable under the control of all of the remaining units of the code to move said type wheel a distance equal to two rows of type.

7. In a selector mechanism, a plurality of selector members each arranged to pivot about a plurality of points, fulcrum means selectively positioned and responsive to successive signals to select the points about which said selector members pivot to eiect selective positioning, means to operate said selector members in timed relation with said successive signals, means associated with the rst one oi said selector members for controlling the positioning of a typewheel to print from one of two rows of type thereon and means associated with the remainder of the selector members controlling the rotary positions of the typewheel.

8. A telegraph receiver comprising a typewheel, means to set the typewheel in different rotary positions, a print hammer cooperating with said typewheel, and registering means. cooperating with the typewheel to accurately position same with respect to the print hammer when a character .is to be printed, said registering means comprising a lever provided'with an extension vincluding a member that normally prevents the operation of the print hammer, but permits operation thereof when a character is to be printed.

9. A printing telegraph receiver comprising a typewheel having a plurality of rows oi' type thereon, permutation code selecting means to position the typewheel in accordance with receive signals, a print hammer to cooperate with said typewheel, and combined registering means for the typewheel and blocking means for the print hammer comprising a lever cooperating with indentations in the typewheel to register the typewheel with respect to the print hammer when a character is to be printed and having a portion for engaging said print hammer to prevent operation of the print hammer at other times.

10. A printing telegraph receiver comprising a typewheel having a plurality of rows of type thereon, and a permutation code selecting mechanism to position the typewheel in accordance with received signals to different printing positions or non-printing positions, said typewheel being provided with registering means in the printing positions, a print hammer cooperating with the typewheel to print characters on a record paper, combined registering means for the typewheel and blocking means for the print hammer, comprising a lever having means to engage with the registering means on the periphery of the typewheel in the printing position thereof and to engage with the non-registering periphery of the typewheel in the non-printing position thereof, said lever also having means for engaging said print hammer to prevent complete operation thereof when said rst named means is engaged with said non-registering periphery.

11. A telegraph receiver comprisingA a typewheel having a plurality of rows of type thereon, a permutation code selecting mechanism to set the typewheel in various rotary and axial printing and non-printing positions in accordance with the received signals, said typewheel provided with registering indentations for each printing position, a print hammer cooperating with said typewheel, register means for said typewheel comprising a member to engage with the indentations in the typewheel to register it both as to its rotary and axial position with relation to the print hammer, blocking means for the print hammer operated by the registering means to permit or prevent operation of the print hammer in accordance with the setting of the said typewheel.

6 sacaste anism to position said typewheel in different rotary and axial positions, means comprising an aggregate motion device for shifting the typewheel axially including a member thereof to shift the typewheel a distance equal to one row of type under the control of one unit of the permutation code selecting mechanism and another member under the selective control of all units of the code to shift the typewheel a distance equal to two rows of type.

13. A printing telegraph receiver comprising a typewheel having a plurality of rows of type thereon, and a. permutation code selecting mechanism to position said typewheel in different rotary and axial positions comprising an aggregate motion function control device for shifting the typewheel axially including a member thereof to shift the typewheel a distance equal to one row of type underthe control of one unit of theperrnutation code selectingmechanism and another member of said aggregate motion mechanism operative under the selective control of all units of the code, to shift the typewheel a distance equal to two rows of type, and means operated by the shifting mechanism to permit or prevent the operation of function control means.

14. A printing telegraph receiver comprising a typewheel having a plurality of rows' of type thereon, and a permutation code selecting mechanism including a cam unit rotating in timed relation with the received signals, to position said typewheel in different rotary and axial positions, an aggregate motion device for shifting the typewheel axially including one member thereof to shift the typewheel under the control of one unit of the permutation code selecting mechanism and another member of said aggregate mction mechanism operative under the selective control of all units of the code, to shift the typewheel a distance equal to two rows of type, and cam means for operating the aggregate motion mechanism connected to and rotating with the rst mentionedcam unit.

15. In a telegraph receiver of the type wherein the selection of characters is controlled by a permutation code selector, a selecting mechanism, a typewheel provided with a plurality of axially spaced rows of letter type and a plurality of rows of gure type, said selecting mechanism comprising stop means for determining the rotary position of said typewheel, and shift devices selectively operable to axially position said typewheel for printing from any one of said rows of type.

16. In a telegraph Vreceiver of the type described, a rotatable and axially movable typewheel provided with axially spaced rows of type, selecting mechanism including Va plurality of rows of rotatable stops, means for driving said typewheel under the direct control of said stops. said driving means being arranged to rotate said typewheel at twice the rotary speed of said stop, and selecting devices in said selecting mechanism cooperable with said stops to position said typewheel at any one of all of its rotary positions during a half revolution of said stops.

17. A telegraph receiver comprising an axially movableand rotatable typewheel provided with a plurality of rows of type, a permutation code selecting mechanism including means for axially moving said typewheel, means for rotating said typewheel to a selected rotary position in accordance with the received code units, printing mechanism associated with said typewheel,v and a registering means operable to hold said-typewheel in selected position during printing and to block printing during spacing and function operations of said selecting mechanism.

18. A printing telegraph receiver comprising a typewheel having a plurality of rows of type thereon and a permutation code selecting mechanism including a shaft that yis rotated in timed relation with the received signals, said shaft carrying cams that operate stop means to position said typewheel in different rotary4 positions, operating means on the said shaft to directly position said typewheel axially, said operating means on said shaft comprising a member `to shift the typewheel under the control of onevunit of the lpermutation code selecting mechanism, and anthat progressively double in number for selecting.

a character from one of the groups.

20. A telegraph receiver .in which the selection of characters is controlled by a permutation code selector comprising a magnet, a rotary stop member having rows of stops thereon that progressively double in number as to the rows, stop means operable under the control of said magnet for directly and progressively positioningv said rotary stop member in accordance with all but the rst unit of a code signal to select characters in groups of two, and means under the control of. said magnet and independent of the rotary stop member to select from one of two characters .of

the code signal.

21. In a printing telegraph receiver, a typewheel having a plurality of rows of type, a

to control the rotary position of said typewheel, means actuated by said selecting mechanism for axially positioning said typewheel to bring one of said rows of type into a printing position, a printing member, and means associated with Y said member for registering said typewheel, said last-named means being also operable to block printing when said selecting mechanism is set to actuate said first-named means for axially positioning said typewheel.

22. In a printing receiver, a typewheel having a plurality of rows of type thereon, a permutation code selecting mechanism operable to position said typewheel in different rotary positions, means comprising an aggregate motion device controlled by said selecting mechanism for shifting said typewheel axially, said aggregate motiol. device including a member operable to shift the typewheel a distance equal to one row of type under the control of one unit ofthe Aselecting mechanism and another member operable to shift the typewheel a distance equal to two rows of type under the control of all units of said se- Asaid group in accordance with'the rst unit of permutation code selecting mechanism operable lecting mechanism, a printing mechanism, and

anism for setting said typewheel in any one of a.

plurality of rotary positions, means for moving said typewheel axially to bring a selected row of y characters into printing position, a print hammer cooperating with said typewheel, a combined registeringand blocking means operable to register said typewheel in a selected rotary and axial position for printing or function operations of said selecting mechanism, said lastnamed means including a member for preventing operation of said print hammer when a function operation is selected by said selecting mechanism.

24. A printing telegraph receiver comprising a typewheel having a plurality of rows of type thereon, said typewheel also being provided with peripheral portions adjacent to said rows of type, a permutation code selecting mechanism for positioning said typewheel in accordance with received signals in different printing or non-printing positions, said selecting mechanism including means for selectively rotating said typewheel and means for selectively moving said typewheel axially, said typewheel peripheral portions being provided with registering means corresponding to printing positions, and non-registering parts, a print hammer cooperating with said typewheel to print characters on a record paper, combined registering means for the typewheel and Vblocking means for said print hammer, comprising a lever to engage with said registering means in printing position thereof to permit operation of said printhammer, said lever also being engageable with the non-registering parts of said peripheral portions of said typewheel in nonprinting positions thereof to prevent complete operation of said hammer. v

25. A printing telegraph receiver comprising a rotatable and axially movable typewheel having a plurality of axially spaced rows of type thereon, said typewheel being also provided with peripheral portions adjacent to said rows of type, registering and non-registering parts on said peripheral portions, a permutation code selecting mechanism, said selecting mechanism including a ser ries of stops for controlling the rotary position of said typewheel and means comprising an aggregate motion device for shifting said typewheel axially, said aggregate motion" device being operable under the control of .one unitpf the code selecting mechanism to move the typewheel a distance equal to one row of type and operable under the control of all units of the code selecting mechanism to shift the typewheel a distance'equal to a plurality of rows of type, a print hammer cooperable with the typewheel, combined registering means for said typewheel and blocking means for said hammer, comprising a lever to engage with a registering part on said peripheral portions of said typewheel to permit operation of said hammer when said typewheel is in a printing position, said lever also being engageable with the non-registering portions of said peripheral portions to prevent operation of said hammer when said typewheel is in a non-printing position for the performance of spacing or the shifting of said typewheel axially by said aggregate motion device.

26. A telegraph receiver comprising a type wheel having a plurality of rows of type thereon; means for axially shifting said typewheel to select a given row of characters; means for rotating said typewheel, always in the same direction, to select a character from said row; and a permutation code selector mechanism for controlling the operation of both of said means during a single selecting operation thereof.

27. A telegraph receiver comprising a type wheel having a plurality of rows of type thereon; a permutation code selector; means for rotating said typewheel, always in the same direction; stop means, controlled by said selector in accordance with all of the units of a code signal, for determining the rotary position of said type wheel; and shift means for axially positioning said member as to the rows of type thereon, said shift means being controlled by said selector in accordance with one of the units of said signal, whereby the rotary and axial position of said member is set by a single selecting operation.

28. In combination, case shift mechanism; a plurality of selector members each arranged to pivot about a plurality of points, combined fulcrum selecting means to determine the points about which said selector members pivot, and means under the control of one of said selector members to operate said case shift means.

29. In a printing telegraph receiver; a case shift mechanism; a selecting mechanism, comprising a plurality of selector members each arranged to pivot about a plurality of points; combined fulcrum and selecting means to determine the points about which said selector members pivot; and means under the control of one of said selector members for operating said case shift mechanism.

30. A telegraph receiver comp, recording means; a permutation code selecting mechanism responsive to a series oi successive selective impulses for controlling the stop positions of said recording means; said selecting mechanism including means under the control of the rst selective impulse for positioning said recording means independently of, and during the operating time of, the remaining selective impulses.

31. A telegraph receiver comprising recording means anda permutation code selecting mechanism responsive to a series of successive selective impulses; said selecting mechanism including means for controlling the stop positions of said recording means and means under the control of one of said selective impulses for positioning said recording means independently of, and during the operating time of, the remaining selective impulses.

@WARD E. KLEIN.

Images