US2757777A - Tabulating mechanism for typewriters or like machines - Google Patents

Tabulating mechanism for typewriters or like machines Download PDF

Info

Publication number
US2757777A
US2757777A US422015A US42201554A US2757777A US 2757777 A US2757777 A US 2757777A US 422015 A US422015 A US 422015A US 42201554 A US42201554 A US 42201554A US 2757777 A US2757777 A US 2757777A
Authority
US
United States
Prior art keywords
stop
blade
carriage
tabular
tabular stop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US422015A
Inventor
Utz George Mathews
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Royal Mcbee Corp
Original Assignee
Royal Mcbee Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Royal Mcbee Corp filed Critical Royal Mcbee Corp
Priority to US422015A priority Critical patent/US2757777A/en
Application granted granted Critical
Publication of US2757777A publication Critical patent/US2757777A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00Actions or mechanisms not otherwise provided for
    • B41J25/02Key actions for specified purposes
    • B41J25/18Tabulating

Description

Aug. `7, 1956 G. M. UTz 2,757,777
TABULATING MECHANISM FOR TYPEWRITERS OR LIKE MACHINESV Filed April 9; 1954 4 Sheets-Sheet l G. M. UTZ' Aug. 7, 1956 TABULATING MECHANISM FOR TYPEWRITERS OR LIKE MACHINES 4 sne'ets-snet 2 Filed April 9, 19521 NNN G. M. UTZ
TABULATING MECHANISM FOR .TYPEWRITERS OR LIKE MACHINES Filed April 9, 1954 Aug. 7, 1956 4 Sheets-Shea??l 3 v lNVENTOR eort'ge M. U52
BY @j YL ATTO R N EYS Aug. 7, 1956 G. M` UTz 2,757,777v
TABULATING MECHANISM FOR TYPEWRITERS 0R LIKE MACHINES Fi1ed April 9, 1954 l 4 sheets-sheet 4 lNvNToR ATTORN United States Patent O TABULATING ME'CHANSM FR TYPEWRITERS R LIKE MACIHNES George Mathews Utz, West Hartford, Conn., assignor to Royal Mclee Corporation, a corporation of New York Appncmimi April 9, 'ias/4, 'sain No. 422,015 y1i Claims. (C1. 197-1769 ing key to disable the carriage escapement mechanism an'd simultaneously to position a main frame mounted stop in the path of a tabular stop on the carriage. Usually it is necessary for the key to be held depressed until after the carriage has completed its run and has been stopped by engagement of the carriage mounted stop with the frame mounted stop. Previously it has been proposed to provide detents or Various other holding devices for maintaining the tabulating mechanisms in operative positions after having been set, so as to make it unnecessary to hold the key depressed throughout the entire tabulating operation. In accordance with the present invention, improved means is provided for holding the tabulating and associated parts in set or operative position after only a momentary operation of a key, and for eiiecting returning of the parts to their normal positions at the conclu-sion of a tabulating run of the carriage.
An object of the invention is to provide mechanism of the kind generally referred to above which is of simple and rugged construction and capable of providing long service under repeated shocks and strains imposed by stopping the carriage abruptly at the end of relatively long runs. v
Another object of the invention is to provide mechanism of the character stated including an improved means for latching a frame mounted tabular stop devicel in` its operative or projected position, in combination with novel means for disabling the latching mechanism to enable the parts to be returned to their normal positions at the end of a tabulating run of the carriage.
A iurther object of the invention is to provideA mechanism of the kind referred to in which a frame mounted tabular stop blade or other device normally is held in its retracted or inoperative position by a spring Whichfunctions also to maintain a center stop in its normal position for cooperation with a margin stop.
Other objects of the invention will become apparent from a reading of the following description, the appended claims, and the accompanying drawings, in which:v
Figure l is a vertical, fore and aft, cross-sectional view of a typewriter embodying the invention, on the line l-l of Figure 4, certain parts being shown in elevation and some conventional typewriter parts being omitted, the illustrated parts of a tabulating mechanismv being shown in full lines in their inactive positions and `in dotted lines in their operated or active positions;
Patented Aug. 7, i956 Figure 2 is a fragmentary horizontal section through the rear wall of the typewriter, a margin release lever mechanism being shown in top plan on an enlarged scale;
Figure 3 is a fragmentary perspective View of parts of an actuating lever and shaft, and the front end portion of a latch, drawn on an enlarged scale;
Figure 4 is a fragmentary horizontal sectional view on the line 4 4 of Figure l, some parts being shown in top plan;
Figure 5 is a fragmentary view, partly in horizontal section and partly in top plan, Vshowing a plurality of carriage mounted tabular stops, one of which is in operative position and the others of which are in inoperative positions, and a frame mounted stop blade and rebound check pawl, the frame mounted parts being shown in their inactive positions;
Figure 6 is a view similar to Figure 5, but showing the frame mounted parts in their operative positions prior to engagement of a carriage mounted tabular stop with a trarne mounted tabular stop blade;
Figure 7 is a view similar to Figure 6, but showing the parts in the positions they occupy when the carriage mounted tabular stop engages the frame mounted stop blade and the latter engages a fixed abutment,l the back -check pawl being shown in its active or operative position;
Figure 8 is a fragmentary view, partly in horizontal section and partly in top plan, showing tabulating actuating mechanism and latch mechanism therefor;
Figure 9 is an enlarged scale fragmentary Vertical section View fore and aft of the typewriter on the line 949 of Figure ll, certain parts being shown in elevation;
Figure l0 is a detailed fragmentary perspective view on a reduced scale as compared to Figure 9, showing part of a margin release and escapement disabling mechanism;
Figure l1 is a fragmentary rear elevational View of tabulating mechanism shown in Figure 9 as viewed when looking in the direction of the arrow 11 in Figure 9; and
Figure l2 is a perspective view of a final, carriage mounted stop.
The typwriting mechanism shown by Way of example as embodying the invention in a preferred form, is generally similar in many respects to the Royal standard oiiice typewriter. lt includes a main frame element A on which a carriage element B is mounted for letter or vtyping spacing movement and for return movements, the
frame A including a rear wall l and a left end wall 2. Supported by the frame is a rear carriage track rail 3 providing a support and runway for a plurality of rollers one, 4, of which is shown in Figure 9 as being journalled on the -lower end of a bracket 5 secured by a screw 6 to a tabular stop assembly 7 mounted on the carriage and described in more detail hereinafter.
The typewriter may be provided with conventional means for driving the carriage to the operators left or in the typing spacing direction. For example, the driving means may comprise a spring barrel (not shown) arranged constantly to exert a pull on a draw band 8 equipped with a clip 9 connected to a part 10 of the right hand carriage end plate 11. Escapement mechanism of a known kind may be provided for controlling the typing spacing movement of the carriage from right to left (from left to right as viewed in Figure ll) so as to enable incremental typing or letter spacing movements of the carriage to take place. In the construction shown, an escapement wheel 12 fast with an escapement pinion 13 is'journalled on a stud shaft 14 secured to a stationary frame mounted bracket l5. The escapement pinion 13 normally meshes with an escapement rack 16 Vsecured to a bar` 17 supported on the carriage by two' arms, one of V which'is shown at 18 as being pivoted at 19 on the carriage end plate. Springs, one of which is shown at 20, interposed between a margin stop bar 21 supported on the carriage frame and the rear ends of the arms 18 normally hold the escapement rack 16 in the position shown in Figure 9 in which it meshes with the escapement pinion 13. In operation, the draw band 8 acts under the urge of the spring barrel for moving the carriage to the operators left in incremental letter spacing movements as is permitted by step by step rotation of the escapement wheel 12 and pinion 13.
In order to enable the carriage to perform a tabulating run, that is to be moved to the operators left or to the right as viewed in Figure 11, through a plurality of letter spacing or typing spacing distances, it is necessary to disengage the rack 16 from the escapement pinion 13. For accomplishing this, a rack lifting lever 22 is pivoted at 23 on the main frame and is provided with an upper arm 24 which extends under the bar 17, and with a lower arm 25 which is adapted to be operated in a manner to be described later for rocking the lever 22 clockwise as viewed in Figure 9, thereby to cause the upper lever arm 24 to lift the bar 17 so as to rock the escapement rack assembly 16, 17, 18 about the pivots 19, and thus to disengage the rack 16 from the pinion 13 and permit the carriage to be moved to the operators left without restraint by the escapement mechanism.
The typewriter may be equipped with margin stop mechanism of a known kind for determining the marginal or end travel positions to which the carriage may move. As shown, a single margin stop member 26 which may be of known construction, is mounted on the margin stop bar 21, and is adapted to engage a center stop member 27 mounted on the frame for limiting movement of the carriage to the operators left, that is in the typing spacing direction. The center stop member 27 is pivoted at 28 on a pair of ears 29 on a bracket 30 supported on the rear wall 1 of the main frame A. Normally, the center stop member 27 is yieldably held in its margin stop engaging position as shown in Figure 9 in which it is in the path of the margin stop member 26 on the carriage B. For this purpose, a leaf spring 31 secured by screws 32 to the bracket has its upper end arranged to press against a lug 27I on the center stop 27, and to urge the center stop counterclockwise about the pivot 28. In order that the center stop 27 may be rocked clockwise about its pivot 28 so as to displace its upper end out of the path of the margin stop 26, that is to the position shown in dotted lines in Figure 9, so as to enable the margin stop to pass the center stop for extending the writing or typing slightly beyond the normal margin, the center stop is provided with a springy lower arm extension 33 adapted to be operated by margin releasing mechanism to be described hereinafter.
A line lock lever 34 is pivoted at 35 on the center stop 27. The arrangement is such that when the center stop is in its normal position as shown in Figure 9 in full lines, the line lock lever 34 will be engaged by the margin stop 26 when the carriage approaches its left margin position so as to rock the line lock lever about its pivot 35 and actuate mechanism (not shown) for preventing depression of typing keys. The mechanism for preventing depression of the typing keys when the line lock lever 34 has been operated forms no part of the present invention and is not illustrated. It may be of a well known construction.
Many of the parts described above are of known construction and relative arrangement, and do not in themselves constitute the present invention. The invention relates more particularly to other parts to be described, and to the cooperative relation of such other parts with each other and with parts which already have been described.
Referring now to the tabulating mechanism, the assembly 7 previously referred to includes a support generally designated 36 shown in Figures l, 9, and 11 as being 4 mounted on the carriage B and as comprising upper and lower rack bars 37 and 38 respectively formed with transverse grooves 39, 40, which register with each other and which are spaced longitudinally of the rack bars at letter space intervals.
Mounted on the stop frame or support 36 is a plurality of laterally settable stop devices, several of which are designated C and are shown in their normal or inoperative positions, and another of which C is shown in its rearwardly projected or operative position. The tabular stops C-C' are similar to individual stops disclosed in the patent to Myers et al. No. 1,892,071. Each includes a bridge or central portion 41, upper legs 42 and 43 which project alongside opposite sides of the upper rack bar 37, and lower legs 44 and 4S which project downwardly alongside opposite sides of the bottom rack bar 38. Each tabular stop C-C is provided with a spring 46 mounted on a pin 47 with one end hooked at 48 (see Figure 9) around the edge of the tabular stop just above the lug 44, the other end of the spring being curved as at 46* so as to press against the top rack bar 37. The arrangement is such that each tabular stop can be shifted transversely of the frame 36 to operative position at C' or to an inoperative position shown at C, the spring 46 frictionably and yieldably maintaining the stop in whichever position it has been set.
When a tabular stop is set in its operative position as shown at C' in Figure 9, its rear edge projects toward the back of the machine sutciently to be engaged by a frame mounted stop device adapted to be moved controllably into or out of the path of the operatively positioned stop C. In the illustrative embodiment of the invention, the frame mounted stop device is of such construction that when it has been moved to operative position it will be set or latched in such position automatically to remain there until a tabulating operation or run has been completed without its being necessary for a key or other mechanism which moved the device to operative position to be held depressed or otherwise actuated. Thus. the arrangement is such that a momentary operation of a tabular key or mechanism controlled thereby will set the frame mounted stop device in its operative position where it will remain until the tabulating operation has been completed, even though the tabular key or mechanism controlled thereby is returned to its inactive or normal position before the tabulating operation has been completed.
In the form shown, the frame mounted tabular stop device is constituted by a tabular stop blade D secured by a set screw S0 to blade mounting means comprising a shaft 49 mounted for both axial sliding and rocking movements in bearing lugs 51, 52 on. the bracket 30. Normally, the tabular stop blade D is positioned as shown in full lines in Figures l and 9 so that its upper end 53 is disposed out of the path of an operatively positioned tabular stop C and adjacent to or against an abutment 54 formed on the bracket 30. The tabular stop blade D is yieldably held in this normal position by spring means, and preferably by the same spring 31 as holds the center stop 27 in its normal or margin stop intercepting position. For this purpose, the lower arm part 33 of the center stop 27 is disposed in front of a pin 55 on an arm S6 secured to a. shaft 57 mounted to rock in ears 58` and S8b of a bracket 58 secured to the rear frame wall 1 by screws 58C. Another arm 59 secured to the shaft 57 is pivoted at 60 to the front end of a link 61 the rear end of which is pivoted at 62 to the lower end of the stop blade D. In the form shown, the link 61 is constructed so as to be adjustable in length, and for this purpose is provided at its rear end with a plate 63 which may be shifted longitudinally on the link 6l to adjusted position by loosening a clamping screw 64 and the pivot screw 62.
The spring 31 constantly urges the center stop 27 to rock counter-clockwise as viewed in Figure 9, thus causin g the lower end part 33 of the center stop 27 to bear against the pin 55 and urge the arm156 and :shaft 57 to rock clockwise. Consequently, the arm 59'on1theshaft 57 is urged forwardly of the machine to pull `the linkl 61 and urge the stop blade D clockwise tok its-normal or full line position shown in Figure 9 in whichthe rear edge of the blade D above the shaft 49 engagesa limit stop 65 formed on a mounting plate `66 secured to lthe top of the abutment 54 by vscrews 67. Thus the spring 31 acts through the center stop 27 to maintain the tabular stop blade D in its retracted position.
Actuating means for moving the tabular stop blade D transversely to the direction of carriage travel to its projected position as shown in dotted lines in Figures land 9 and for disabling the escapement mechanism includes a key lever 68 pivoted at 69 on a frame cross bar 70. vThe key lever 68 is urged clockwise to its normal position by aspring 71. A cushion stop 72 is engageable by the front end portion of the key .lever 68 for limiting its movement under the urge of thenormalizing spring 7l. The cushion stop 72 is carried by `a frame cross .bar 73 and extends across the front of the machine for cooperation with other key levers andxservice levers normally -provided in machines of this kind.
The upper arm 74 of the key lever 68 is equipped with a shouldered screw pin 75 which extends through a slot 76 in the front end of a link 77 provided at `its rearl end with a slot 78 which receives a shouldered screw pin 79 on an arm 88 having a hub 81 secured by screws 82 t0 the shaft 57. Preferably the link 77 is constructed so that it may be adjusted in length, and for this purpose it is shown as comprising two parts..77a and 77b `adjustabl'y vfixed together by screw and slot connections generally vdesignated 77C.
In operation, when the key 68 is depressed the lever 77 is pulled forwardly'so as to rock the arm 80 and shaft 57 counter-clockwise as viewed in Figure l, thereby causing the link 61 to be pushed rearwardly so` as tov rock the tabular stop blade D counter-clockwise from the position shown in full lines in Figure l to the position shown in dotted lines in this figure. The blade D will be arrested in its projected or operative position'by engagement of a limit stop linger 53a, formed on the blade upper end 53, with the rear face of the abutment 54. The upper end of the blade D will thenv be disposed in the path of the operatively positioned tabular stop C on the carriage. With the upper end 53 of the' blade D in its projected position, it will be adapted to engage theop'eratively positioned stop C on the carriage for arresting the carriage at the end of its tabulating movement or run. It may be observed that the positioning of the stop blade D for arresting the carriage in the manner described above is accomplished by coincidental rocking of the center stop 27 to its inoperative position against the urge of-its normalizing spring 31. As Will be explained hereinafter, the blade D is latched or heldin its projected'position automatically until its upper end S3 is engaged by the carriage mounted stop C', after which the blade D is released so as to enable it to be returned toits retracted position under the urge of the spring 31 acting through the center stop 27, the armv S6, the shaft 57, the arm 59, and the link 61. i
For disabling the escapement mechanism in order to enable the carriage to perform a tabulating run, the arm 56 on the shaft 57 is provided witha rounded upper end or nose 83 which is adapted to press against the lower arm of the rack lifting lever 22 when the shaft 57 is rocked by depression of the key lever 68 for moving the stop blade D to its projected position.
Mechanism responsive to movement of the tabular blade D for automatically holding the blade. D in` its projected positionduring a tabulating run until it is engaged by the operatively positioned tabular stop Cf includes a holding means or latch 84 pivoted at-SS on a bracket 86 secured to the rear frame wall 1 by screws 87. A spring 88 interposed between an ear-89 onthe rear end of the latch and an' ear 90 on the bracket 86 urgesl the latch 84 to rock clockwise as viewed in Figure 4. f. The front end of the latch 84 has a part or surface'84a which bears against or engagesv a lug 91 on the arm 80 for normally maintaining the latch 84 in the position shown in FiguresS and 4.
ln operation, when the key lever 68 is depressed sol as to rock the shaft 57 counter-clockwise as viewed in Figure l, the lug part 91 will pass forwardly beyond the surface part 84a on the latch 84 so as to enable the latch to be rocked clockwise as viewed in Figure 4 by the spring 88, causing the lug 91 to be received in the latch notch 84h', thereby causing the shaft 57 to be held iny its operated position. Consequently, the tabular stop bladeD will be held in its projected position as shown in dotted lines in Figures l and 9. When the latch 84 is released in a manner described hereinafter the blade D is returned to its` normal position shown in full lines in Figures l and 9.
When the blade D is in its normal or retracted position it is held adjacent to the abutment 54 by a blade locating post or device 92 which has a threaded shank extending with clearance through an aperture 93 in the mounting plate 66. The post 92 is held in adjusted position on the plate'66 by nuts 94. The post 92 has a head v 92a formed with a face 92h parallel to and spaced from the abutment 54 to provide a predetermined space be'- tween the post and ,abutment face 92h 'sufh'cicnt to receive the upper end 53 of the bladeD and to enable the blade to move freely into its projected position. When the blade moves to its projected position it also moves a short distance in the direction ofcarriagereturn movement to a predetermined location for a purpose and in a manner to he described later.- The movement of'the blade in the carriage return direction is limited by engagement of the upper end53 of the blade with an ineline-d free edge 92C on the head 92LL of the' post 92. By movingl the post in or out in the direction of its axial extent, that is parallel to the abutment and the post face 92b and at an angle to the inclined edge 92C, the latter may be so adjustably positioned as to limit the movement of the blade upper end 53 in the carriage return direction tothe extent required to position the blade upper end as is needed for proper operation. This adjustment may be made without varying the dimension of the predetermined space between the abutment andthe face 92h in the direction of carriage travel.
The mechanism for automatically releasing the latch 84 when the carriage mounted tabular stop C has engaged the upper end 53 of the tabularstop blade D to terminate a tabulating run of the carriage includes an offset plate 95 lix'ed tothe shaft 49 and connectedv et 96 to one end of a link 97 the other end of which is connected at 98 .to the latch 8d. The link 97 ,may be constructed so as to be of adjustable length and for this purpose may include a turnbuckle or adjusting screw device 99.
Assuming the blade D to have been moved to its projected position in the manner previously described, and to have been latched in such position by engagement of the latch notch 84h with the lug 91 on the arm 80, and the escapement mechanism to have been disabled, the carriage willl perform its tabulating nin'. When the blade lD was projected to place itsupperv endq53 in the path of the carriage mounted tabular stop C' the upper blade end 53 was moved outwardly alongside of the inclined edge on the head 92a of the post 92, thereby enabling the spring S3 to rock the latch 84 to pull on the link 97 and move the offset plate 95 and shaft' 49k toward the right or toward the left as viewed in Figure lll so as to place the upper blade endl 53 in the position shown in Figure 6 wherein the blade end enga-gesthe inclined free edge'o'f theposthead 92. The upper blade end 53 will then be positioneda short distance'from theV abutment S4. The lug 91 on-the lever S0 having moved .f into the latchrnotch 84th the blade-Dv willbe retained'in its projected position during the tabulating run of the carriage.
When the tabular stop C' on the carriage engages the upper blade end 53, the blade D and the shaft 49 will be moved bodily and in unison toward the operators left until the blade engages the abutment 54 as shown in Figure 7, thereby bringing the carriage to rest at the end of its tabulating run. The bodily movement of the blade D and shaft 49 thus elected will pull the link 97 so as to rock the latch 84 counter-clockwise as viewed in Figure 4, thereby releasing the latch nose 84h from the lug 91 on the lever 80. This will permit the center stop normalizing springr 31 to act through the center stop 27, the lever 56, the shaft 57, the arm 59, and the link 6l to return the tabular stop blade D to its retracted position.
Mechanism is provided for preventing rebounding of the carirage toward the right when the carriage mounted tabular stop C' strikes the upper end 53 of the blade D and the latter strikes the abutment 54. In the form shown, a back check or rebound preventing pawl 100 is pivoted at 101 on an ear 102 formed on a bracket 103 secured by screws 104 to the mounting plate 66 and the abutment 54. The pivot 101 includes an eccentric bushing 105 and screw 106 for enabling the adjustment of the pivotal axis of the pawl 100. The pawl has a nose dened by an inclined edge 107 and an oppositely inelined edge 108. A spring 109 interposed between an ear 110 on the pawl 100 and an ear 111 on the bracket 103 constantly urges the pawl 100 to rock counter-clockwise, as viewed in Figures 5, 6, and 7, so as to dispose the pawl nose in the path of an operatively positioned carriage mounted tabular stop C. Normally, the pawl 100 is held in its retracted or inoperative position as shown in Figure 5, by a pin 112 on the blade D engaging a depending lug 113 on the pawl 100. With the blade D in its retracted position, as shown in Figure 5, the pin 112 presses against the depending lug 113 on the pawl 100 so as to maintain the pawl in its inoperative position against the urge of the spring 109. When the blade D moves to its projected position, as shown in Figure 6, the pin 112 moves away from the lug 113 on the back check pawl so as to enable the pawl to be rocked to its operative position. Movement of the pawl under `the urge of the spring 109 in this manner is limited by er1- gagement of a stop finger 114 formed on the pawl with an end part 115 on the bracket 103.
In operation, the parts normally will be in the relative positions shown in Figure with the pawl 100 retracted so that its nose is out of the path of the carriage mounted stop C'. When a tabulating run is initiated by depression of the key lever 68 the stop blade D will be moved from its retracted position, shown in Figure 5, to its projected position, shown in Figure 6, thereby moving the pin 112 away from the lug 113 on the pawl 100 and enabling the spring 109 to move the pawl to its operative position as shown in Figure 6, in which its nose is in the path of the operatively positioned tabular stop C. As the stop C' approaches the upper end 53 of the blade D, it will engage the inclined edge 108 of the pawl nose so as to cam the pawl clockwise, as viewed in Figure 6, enabling the stop C' to pass beyond the inclined edge 108 and engage the blade top 53 and move the latter against the abutment 54, as shown in Figure 7. The stop C having passed beyond the inclined edge 108 on the pawl, the latter will be rocked counter-clockwise by thespring 109 to the position shown in Figure 7 so that the pawl nose edge 107 will be disposed behind the stop C' and the latter will thus be disposed between the stop blade upper end 53 and the pawl so as to prevent movement of the carriage in either direction. When the stop blade D is returned to its normal position the pin 112 on the blade again will press against the depending lug 113 on the back check pawl 100 so as to rock the pawl clockwise back to its normal or inactive position, as shown in Figure 5.
If a tabular stop C', set in operative position, should be tothe left of the tabular blade D (to the right of the blade D as viewed in Figures 5, 6 and 7) when the blade D is in its projected position, and if the carriage should then be returned toward the right, a tapered surface 116 on the stop C will engage a tapered surface 117 on the blade top 53 so as to cam the stop C' to its retracted or inactive position, that is the position represented by the stop C, thus permitting the carriage to return to its right end position without being stopped by the tabulating mechanism and without damaging any of the parts.
In the event that the tabular key 68 is depressed when no tabular stop on the carriage has been set in operative position, the carriage will be brought to rest and the tabulating mechanism returned to its normal condition by engagement with the blade D of a final stop 118 fixed to the carriage at the right hand end of the lower rack bar 38 of the assembly 7.
The typewriter shown includes the usual margin release control mechanism for moving the center stop 27 to the position shown in dotted lines in Figure 9 for enabling the carriage to be moved a few letter spaces beyond the position normally determined by engagement of the margin stop 26 with the center stop 27. A key (not shown) is adapted to operate a link 119 shown in Figure 2 as being pivoted at 120 to a lever 121 mounted to rock about a pivot 122 on a bracket 122* secured by a screw 122h to the rear frame wall l. The lever 121 is formed with an upstanding ear or pad 123 arranged to bear against the rounded lower end `124 of a lever 125 pivoted at 126 on a bracket 127 secured by screws 128 to the bracket. 30. The upper end of the lever is arranged to bear against the head 129 of a pin 130 mounted for sliding movements in a bushing 131 mounted in the bracket 30. The front end of the pin bears against the lower arm part 33 of the center stop 27.
In operation, when the margin release key (not shown) is operated to pull the link 119 the lever 121 is rocked clockwise, as viewed in Figure 2, so that the pad 123 will bear against the rounded lower end 124 of the lever 125 and rock the latter counter-clockwise, as viewed in Figure 9. This will cause the upper end of the lever 125 to push against the head 129 on the pin 130 and move the latter forwardly so that its front end will push against the lower arm 33 of the center stop 27 and rock the latter clockwise about its pivot 28, thereby displacing the upper end of the center stop lever 27 out of the path of the margin stop 26. `This movement of the center stop 27 can take place without any corresponding movement of the actuator arm 56 for the tabulating mechanism because the lower arm part 33 of the center stop 27 can move away from the pin 55 on the arm 56. In effect, the pin 55 and the lower arm part 33 of the center stop lever constitute a one-way motion transmitting connection enabling the margin release mechanism to be operated independently of operation of the tabulating mechanism.
Operation Although various phases of the operation of the mechanism disclosed herein have been described separately in connection with the description of the mechanism itself, a brief review of typical operating cycles may be helpful. When the parts are in their normal or inactive positions, the tabular stop blade D will be in its retracted position, as shown in full lines in Figures l, 9, `and 5, and one or more of the carriage mounted stops will be in their active positions, as indicated by the stop C'. When it is desired to effect a tabulating run of the carriage, the key lever 68 is depressed so as to pull forwardly on the link 77 and rock the arm 56 and shaft 57 included in the common actuating means for the blade D, the escapement release mechanism, and the center stop 27. This will rock the arm 59 counter-clockwise so as to' push rearwardly on the link 61 and rock the bladey D counter-clockwise, as viewed in Figures 1 and 9, so as to position its upper end outwardly with respect to the head' 92a of the locating device 92, the upper end 53 of the blade then being disposed as shown in Figure 6. The rocking of the shaft 57 in this manner will disposed the lug 91 on the arm 80 clear of the surface 84a on the latch 84, thus enabling the spring 88 to rock the latch 84 to its latching position wherein the lug 91 is received in the latch slot 84h, The rocking of the latch 84 acts through the link 97 andy offset plate 95 so as to move the shaft 49 and blade D- bodily and in unison in the direction of carriage travel toward the operators right until' the upper end of the blade engages the inclined surface of the head 92a on the post or locating device 92, as shown in- Figure 6, thus limiting the rightward movement ofthe shaft 49 and blade D. When the arm 80, shaft S7, and parts secured to the shaft have been latched in their operative positions, the lost motion providedby the slots 76 and 78 in the link 77 enables the key lever 68 to be returned to its normal position without returning the tabulating mechanism parts to their normal or inoperative positions.
With the blade Dy latched in its projected. position, and with the escapement mechanism having been disabled by rocking of the rack lifting lever 22 in the manner previously explained, the carriage will be driven uninterruptedly on a tabulating run by the draw band 8. When the operatively positioned stop C' on the carriage approaches thev upper end 53 of the tabular stop blade D the parts Will be in the positions shown in Figure 6 with the back check pawl 100 in its operative position. The stop C will engage the inclined edge 103 on the pawl 100 and cam the latter clockwise so as to enable the stop C to pass the edge 108 and move into contact with the upper end 53 of the stop blade D. The latter will then be moved against the abutment S4 `so as to terminate the tabulating movement of the carriage. At thistime the pawl 100 will. have been moved by the spring 109 tothe position shown in Figure 7 wherein the pawl inclined edge 107 is disposed in contact with thel tabular stop C so as to prevent rebounding of the carriage.
The movement of the stop blade D against the abutment 54. under the urge of the carriage mounted stop- C' causes-the blade D to be moved bodily in the direction of carriage typing spacing travel so as to pull the link 97 to the operators left, thereby rocking the latch 84 counter-clockwise as Viewed in Figure 4, and releasing its notch 84h from the lug 91 on the arm 80. This-will permit thearm 80, the shaft 57, and the other parts secured to the shaft to be returned to their normal positions by thespring 31 acting through the center stop 27. The return movement of the shaft 5'7 will be accompanied by returning kof the rack lifting lever 22 to its normal position under the urge of. the springs 20 for re-engaging the escapement rack 16 with the escapement pinion 13. The partsv will all then have been returned to their normal positions so that travel of thecarriage in the typing spacing direction again will be under the control of the escapement mechanism.
If no carriage mounted tabular stop has been set in Aoperative position prior to the depression of the tabulating key 68, the final stop 118 on the carriage will engage the tabular stop blade D when the carriage has moved substantially completely to its left end position so as to move the blade D and shaft 49 bodily together and unlatch the arm 80.
If a carriage mounted tabular stop C in operative position is located at the left `of the tabular stop blade DV when the latter is in its projected position, and if the carriage is returned toward the right, the inclined edge 116 on the tabular stop C will engage the inclined edge 117 on the stop blade D so kas tocam the operatively positioned stop C back to its inoperative-position in the assembly 7thereby enabling the carriage toY be returned completely to its righty end position without jamming ,or breaking of the parts.
If it is desired to operate lthe margin releasing mechanism in the ordinary manner without effecting operation of the tabulating mechanism, the margin release key (not shown) is operated to pull the link 119, rock the levers 121 and 125, and push forwardly on the' pin 130 to rock the center stop lever 27 clockwise to the position shown in dotted lines in Figure 9, thereby enabling the margin stop 26 on the carriage to pass the upper end of the center stop lever without engaging the latter. Such operation of the normal or usual margin releasing mechanism takes place without interference by the tabulating mechanism, due to the one-way motion transmitting characteristics of the connection provided by the pin 55 and arm part 33 of the center stop lever.
The construction disclosedy embodies the invention in a preferred form, but it is vintended that the disclosure be illustrativel rather than d'enitive of the invention. The invention is defined in the kappended clams.
I claim:
l. In a typewriter or like machine, a frame element; a carriage element mountedr on said frame element for travel in typing spacing and return directions; means for drivingl said carriage element in typing spacing direction; escapement mechanism for controlling said driving of said carriageelement; a tabular stop mounted on one of said elements; a shaft mounted on the other of said elements and extending parallel to` the direction of carriage element travel; a tabular stop blade mounted on said shaft for bodily shifting movement axially of said shaft and for rocking about the axis of said shaft from a retractedI position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; actuating means for disabling said escapement mechanism to enable saidy carriage element to be driven on a tabulating run in the typing spacing direction and for rocking said tabular stop 'blade from. its retracted position to its projected position; means responsive to rocking of saidl tabular stop blade to its projected position for moving said tabular stop blade bodily axially of said shaft in the carriage return direction toV a predeterminedlocation; and means for latching said tabular stop blade in said ypredetermined locationandbeing releasable in response toengagement of said tabular stop `blade with said tabular stop `and consequent bodily movement of said tabular stop blade in the typing spacing direction axially of said shaft for enabling said tabular stop blade to rock back to its retracted position.
2. In a typewriter or like machine, a frame elementi; a carriage elementA mounted on said frame element for travel in typing spacing and return directions; means for driving said carriage element in typing spacing ldirection; escapement mechanism for controlling said driving of said carriage element; a tabular stop mounted onone of said elements; a shaft mounted on the other of said elements and extending parallel to the direction of carriage element travel; a` tabular stop blade mounted on said shaft for -bodily shifting movement axially of said shaft and1for rocking about' the axis of said shaft from a retracted position iny which-*said tabular lstop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is' engageable with said tabular stop; first spring means urging said tabular stop blade to itsk retracted position; actuating means for disablingl said escapement mechanism to enable said carriage element tov be driven on a tabulating run inthe typing spacing direction and for rocking. said tabular stop blade fromv its retracted position to its projected position against the urge of said first spring means; other spring means responsive to movement of said tabular. stop blade to itsprojected position for moving said tabular4 stop blade bodily axially of said shaft in the carriage return direction to a predetermined location; and means for latching said tabular stop blade in said predetermined location and being releasable in response to engagement of said tabular stop blade with said tabular stop and consequent bodily movement of said tabular stop blade in the typing spacing direction axially of said shaft for enabling said tabular stop blade to be rocked back to its retracted position by said trst spring means.
3. In a typewriter or like machine, a frame element; a carriage element mounted on said frame element for travel in typing spacing and return directions; means for driving said carriage element in typing spacing direction; escapement mechanism for controlling said driving of said carriage element; a margin stop member mounted on one of said elements; a center stop member mounted on the other of said elements and normally being engageable with said margin stop member for determining the marginal position to which said carriage element may travel; margin release means for shifting one of said stop members to prevent its engaging the other of said stop members; a tabular stop mounted on said one of said elements; a tabular stop blade; blade mounting means mounting said tabular stop blade on said other of said elements for bodily movement in the direction of carriage element travel and also for movement transverse to the direction of carriage element travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; actuating means for disabling said escapement mechanism to enable said carriage element to be driven on a tabulating run in the typing spacing direction and for moving said tabular stop blade from its retracted position to its projected position; means responsive to movement of said tabular stop blade to its projected position for moving said tabular stop blade bodily in the carriage return direction to a predetermined location; means for latching said tabular stop blade in said predetermined location and being releasable in response to engagement of said tabular stop blade with said tabular stop and consequent bodily movement of said tabular stop blade in the typing spacing direction for enabling said tabular stop blade to return to its retracted position; and means operable by said actuating means for operating said margin release means.
4. In a typewriter or like machine, a frame element; a carriage element mounted on said frame element for travel lin typing spacing and return directions; means for driving said carriage element in typing spacing direction; escapement mechanism for controlling said driving of said carriageelement; a margin stop member mounted on one of said elements; a center stop member mounted on the other of said elements and normally being engageable with said margin stop member for determining the marginal position to which said carriage element may travel; margin release means for shifting one of said stop members to prevent its engaging the other of said stop members; a tabular stop mounted on said one of said elements; a tabular stop blade; blade mounting means mounting said tabular stop blade on said other of said elements for bodily movement in the direction of carriage element travel and also for movement transverse to the direction of carriage element travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; tirst spring means urging said tabular stop blade to its retracted position; actuating means for disabling said escapement mechanism to enable said carriage element to be driven on a tabulating run in the typing spacing direction and for moving said tabular stop blade from its retracted position to its projected position against the urge of said first spring means; other spring means responsive to movement of said tabular stop blade to its projected position for moving said tabular stop blade bodily in the carriage return direction to a predetermined location; means for latching said tabular stop blade in said predetermined location and being releasable in response to engagement of said tabular stop blade with said tabular stop and consequent bodily movement of said tabular stop blade in the typing spacing direction against the urge of said other spring means for enabling said tabular stop blade to be returned to its retracted position by said first spring means; and means operable by said actuating means for operating said margin release means.
5. In a typewriter or like machine, a frame element; a carriage element mounted on said frame element for travel in typing spacing and return directions; means for driving said carriage element in typing spacing directions; escapement mechanism for controlling said driving of said carriage element; a tabular stop mounted on one of said elements; a tabular stop blade; blade mounting means mounting said tabular stop blade on the other of said elements for movement in the direction of carriage element travel and also for movement transverse to the direction of carriage element travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; actuating means for disabling said escapement mechanism to enable said carriage element to be driven on a tabulating run in the typing spacing direction and for moving said tabular stop blade from its retracted position to its projected position; means responsive to movement of said tabular stop blade to its projected position for moving said tabular stop blade in the carriage return direction to a predetermined location; means for latching said tabular stop blade in said predetermined location and being releasable in response to engagement of said tabular stop blade with said tabular stop and consequent movement of said tabular stop blade in the typing spacing direction for enabling said tabular stop blade to return to its retracted position; a margin stop member mounted on said one of said elements; a center stop member mounted on said other of said elements and normally being engageable with said margin stop member; margin release means for shifting one of said stop members to prevent its engaging the other of said stop members; and means responsive to movement of said tabular stop blade from its retracted position to its projected position for operating said margin release means.
6. In a typewriter or like machine, a frame element; a carriage element mounted on said frame element for travel in typing spacing and return directions; means for driving said carriage element in typing spacing direction; escapement mechanism for controlling said driving of said carriage element; a tabular stop mounted on one of said elements; a tabular stop blade; blade mounting means mounting said tabular stop blade on the other of said elements for movement in the direction of carriage element travel and also for movement transverse to the direction of carriage element travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; actuating means for disabling said escapement mechanism to enable said carriage element to be driven on a tabulating run in the typing spacing direction and for moving said tabular stop blade from its retracted position to its projected position; means responsive to movement of said tabular stop blade to its projected position for moving said tabular stop blade in the carriage return direction to a predetermined location; means for latching said tabular stop blade in said predetermined location and being releasable in response to engagement of said tabular stop blade with said tabular stop and consequent movement of said tabular stop blade in the typing spacing direction for enabling said tabular stop blade to return to its retracted position; a margin stop member mounted on said one of said elements; a center stop member mounted on said other of siid elements and normally being engageable with said margin stop member; means including a one way drive conection for transmitting motion from said actuating means to one of said stop members for shifting the latter to an inoperative position for preventing its engaging the other of said stop members; and margin release control means for shifting said one of saidy stop members to its inoperative position independently of said actuating means, said one way drive connection enabling said one of said stop members to be shifted to its inoperative position by said margin release control means without interference by said actuating means when the latter is in non-actuated position.
7. In a typewriter or like machine, a stationary frame; a carriage mounted on said frame for travel iny typing spacing and return directions; means for driving said carriage in typing spacing direction; escapement mechanism for controlling said driving of said carriage; means for disabling said escapement mechansm for enabling said carriage to be driven on a tabulating run; a margin stop mounted on said carriage; a center stop mounted on said frame for movement from a normal position in which it is engageable with said margin stop for determining the marginal position to which said carriage may travel to an inoperative position in which said center stop is not engageable with said margin stop; a tabular stop mounted on said cariage; a tabular stop blade; blade mounting means mounting said tabular stop blade on said frame for movement in the direction of carriage travel and also for movement transverse to the direction of carriage travel from a retracted position in which said tabular stop blade is not yengageable With said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; common actuating means; connections between said common actuating means and said escapement disabling means for operating the latter in response to operation of said common actuating means; connections between said common actuating means and said center stop for moving the latter from its normal position to its inoperative position in response to operation of said common actuating means; connections between said common actuating means and said tabular stop blade for moving the latter to its projected position; means responsive to movement of said tabular stop blade to its projected position for moving it also in the carriage return direction to a predetermined location; and holding means for retaining said tabular stop blade in its projected position during a tabulating run of said carriage, for retaining said escapement disabling means in operated condition, and for retaining said center stop in its inoperative position, said holding means being releasable in response to engagement of said tabular stop with said tabular stop blade and consequent movement of said tabular stop blade in 'the typing spacing direction for enabling said tabular stop blade to return to its retracted position, for effecting reenabling of said escapement mechanism, and for effecting returning of said center stop to its normal position.
8. In a typewriter or like machine, a stationary frame; a carriage mounted on said frame for travel in typing spacing andrreturn directions; means for driving said carriage in typing spacing direction; escapement mechanism for controlling said driving of said carriage; means for disabling said escapement mechanism for enabling said carriage to be driven on a tabulating run; a margin stop mounted on said carriage; a center stop mounted on said frame for movement from a normal position in which it is engageable with said margin stop for determining the marginal position to which said carriage may travel to an inoperative position in which said center stop is not engageable with said margin stop; a tabular stop mounted on said carriage; a tabular stop blade; blade mounting means mounting said tabular. stop blade on said frame for movement inthe direction of carriage travel and also for' movement transverse tothe direction of carriage travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; common actuating means; connections between said common actuating means and said escapement disabling means for operating the latter in response to operation of said common actuating means; connections including a one way motion transmitting device between said common actuating means and said center stop for moving the latter from its normal position to its inoperative position in response to operation of said common actuating means; connections between said common actuating means and said tabular stop blade for moving the latter to its projected position; means responsive to movement of said tabular stop blade to its projected position for moving it also in the carriage return direction to a predetermined location; holding means for retaining said tabular stop blade in its projected position during a tabulating run of said carriage, for retaining said escapement disabling means in operated condition, and for retaining said center stop in its inoperative position, said holding means being releasable in response to engagement of said tabular stop with said tabular stop blade and consequent movement of said tabular stop blade in the typing spacing direction for enabling said tabular stop blade to return to its retracted position, for effecting re-enabling of said escapement mechanism, andfor e'iecting returning of said center stop to its normalposition; andmargin release means for moving said center stop from its normal position to its inoperative position, said one way motion transmitting device enabling said margin release means to move said center stop from its normal position to its inoperative position independently of operation of said common actuating means, said escapement disabling means, and said tabular stop blade.
9. ln a typewriter or like mechine, a stationary frame; a carriage mounted on said frame for travel in typing spacing and return directions; means for driving said carriage in typing spacing direction; escapement mechanism for controlling said driving of said carriage; means for disabling said escapement mechanism for enabling said carriage-to be driven on a tabulating run; a margin stop mounted on said carriage; a center stop mounted on said frame for movement from a normal position in which it is engageable with said margin stop for determining the marginal position to which said carriage may travel to an inoperative position in which said center stop is not engageable with said margin stop; a tabular stop mounted on said carriage; a tabular stop blade; blade mounting means mounting said tabular stop blade on said frame for movement in the direction of carriage travel and also for movement transverse to the direction of carriage travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; common actuating means; connections between said common actuating means and said escapement disaoling means for operating the latter in response to operation of said common actuating means; connections between said common actuating means and said center stopffor moving the latter from its normal position to its inoperative position in response to operation of said lcommon actuating means; connections between said common actuating means and said tabular stop blade for moving the latter to its projected position; a spring for urging said center stop to its normal position and thereby acting through said connections and said common. actuating means for urging said tabular stop blade to retractedposition and urging said escapement mechanism disabling means to non-activated position; means responsive to movement of said tabular stop blade to its projected position for moving it also in the carriage return direction to a predetermined location; and a latch for retaining said tabular stop blade in its projected position during a tabulating run of said car riage, for retaining said escapement disabling means in operated condition, and for retaining said center stop in its inoperative position, said latch being releasable in response to engagement of said tabular stop with said tabular stop blade and consequent movement of said tabular stop blade in the typing spacing direction for enabling said spring to return said tabular stop blade to its retracted position, return said center stop to its normal position, and return said escapement mechanism disabling means to non-activated position.
l0. In a typewriter or like machine, a frame element; a carriage element mounted on said frame element for travel in typing spacing and return directions; means for driving said carriage element in typing spacing direction; escapement mechanism for controlling said driving of said carriage element; a tabular stop mounted on one of said elements; a shaft mounted on the other of said elements for axial sliding movement parallel to the direc tion of carriage element travel and for rocking movement; a tabular stop blade fixed to said shaft so as to be movable axially therewith and to be rockable therewith from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop; actuating means for disabling said escapement mechanism to enable said carriage element to be driven on a tabulating run in the typing spacing direction and for rocking said tabular stop blade from its retracted position to its projected position; means responsive to rocking of said tabular stop blade to its projected position for moving said tabular stop blade and said shaft in unison in the carriage return direction to a predetermined location; and means for latching said tabular stop blade in said predetermined location and being releasable in response to engagement of said tabular stop blade with said tabular stop and consequent movement of said tabular stop blade and said shaft in unison in the typing spacing direction for enabling said tabular stop blade to rock back to its retracted position.
ll. In a typewriter or like machine having a stationary frame, a carriage mounted on said frame for travel in typing spacing and return directions, means for driving said carriage in the typing spacing direction, escapement mechanism for controlling said driving of said carriage, and means for disabling said escapement mechanism for enabling said carriage to be driven on a tabulating run; tabulating run controlling mechanism comprising a tabular stop on said carriage, a tabular stop blade, means mounting said tabular stop blade on said frame for movement in the direction of carriage travel and also for movement transverse to the direction of carriage travel from a retracted position in which said tubular stop blade is not engageable with said tabular stop to` a projected position in which said tabular stop blade is engageable with said tabular stop, a first spring urging said tabular stop blade to its retracted position, an abutment, means for positioning said tabular stop blade adjacent said abutment when said tubular stop blade is in its retracted position, actuating means for moving said tabular stop blade to its projected position, a latch, a second spring urging said latch into operative position for retaining said tabular stop blade in projected position, a part on said actuating means and a part on said latch being mutually engageable for holding said latch in inoperative position against the urge of said second spring when said actuating means is in non-actuated position and said tabnlar stop blade is in retracted position, said parts being mutually disengageable when said actuating means is actuated whereby to enable said second spring to move said latch to latching position, and a connection between said latch and said tabular stop blade for transmitting spring effected movement of said latch to said tabular stop blade for moving the latter in the carriage return direction and away from said abutment, said latch being releasable from said actuating means in response to engagement of said tabular stop with said tabular stop blade and consequent movement of the latter in the typing spacing direction against said abutment.
l2. In a typewriter or like machine having a stationary frame, a carriage mounted on said frame for travel in typing spacing and return directions, means for driving said carriage in the typing spacing direction, escapement mechanism for controlling said driving of said carriage, and means for disabling said escapement mechanism for enabling said carriage to be driven on a tabulating run; tabulating run controlling mechanism comprising a tabular stop on said carriage, a tabular stop blade, means mounting said tabular stop blade on said frame for movement in the direction of carriage travel and also for movement transverse to the direction of carriage travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade s engageable with said tabular stop, a first spring urging said tabular stop blade to its retracted position, an abutment on said frame, a blade locating device on said frame spaced from said abutment a distance sufiicient to provide a space between said abutment and said blade locating device capable of receiving said tabular stop blade when the latter is in retracted position, said blade locating device having an inclined free edge providing space between said edge and said abutment for enabling said tabular stop blade to be moved in the direction of carriage return movement when said tabular stop blade is moved to its projected position and said inclined free edge being cooperable with said tabular stop blade when the latter is moved to its retracted position `by said first spring for camming said tabular stop blade in the typing spacing direction thereby to direct said tabular stop blade into said space, actuating means for moving said tabular stop blade to its projected position, a latch, a second spring urging said latch into operative position for retaining said tabular stop blade in projected position, a part on said actuating means and a part on said latch being mutually engageable for holding said latch in inoperative position against the urge of said second spring when said actuating means is in non-actuated position and said tabular stop blade is in retracted position, said parts being mutually disengageable when said actuating means is actuated whereby to enable said second spring to move said latch to latching position, and a connection between said latch and said tabular stop blade for transmitting spring effected movement of said latch to said tabular stop blade for moving the latter in the carriage return direction and away from said abutment and into engagement with said inclined free edge of said blade locating device, said latch being releasable from said actuating means in response to engagement of said tabular stop with said tabular stop blade and consequent movement of the latter in the typing spacing direction against said abutment.
13. In a typewriter or like machine having a stationary frame, a carriage mounted on said frame for travel in typing spacing and return directions, means for driving said carriage in the typing spacing direction, escapement mechanism for controlling said driving of said carriage, and means for disabling said escapement mechanism for enabling said carriage to be driven on a tabulating run; tabulating run controlling mechanism comprising a tabular stop on said carriage, a tabular stop blade, means mounting said tabular stop blade on said frame for movement in the direction of carriage travel and also for movement transverse to the direction of carriage travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop, a rst spring urging said tabular stop blade to its retracted position, an abutment lon said frame, a blade locating device on said frame spaced from said abutment a distance suicient to provide a space between said abutment and said blade locating device capable of receiving said tabular stop blade when the latter is in retracted position, said blade locating device having an inclined free edge providing space between said edge and said abutment for enabling said tabular stop blade to be moved in the direction of carriage return movement when said tabular stop blade is moved to its projected position and said inclined free edge being cooperable with said tabular stop blade when the latter is moved to its retracted position by said iirst spring for camming said tabular stop blade in the typing spacing direction thereby to direct said tabular stop blade into said space, actuating means for moving said tabular stop blade to its projected position, a latch, a second spring urging said latch into operative position for retaining said tabular stop blade in projected position, a part on said actuating means and a part on said latch being mutually engageable for holding said latch in inoperative position against the urge of said second spring when said actuating means is in non-actuated position and said tabular stop blade is in retracted position, said parts being mutually disengageable when said actuating means is actuated whereby to enable said second spring to move said latch to latching position, a connection between said latch and said tabular stop blade for transmitting spring eected movement of said latch to said tabular stop blade for moving the latter in the carriage return direction and away from said abutment and into engagement with said inclined free edge of said blade locating device, said latch being releasable from said actuating means in response to engagement of said tabular sto-p with said tabular stop blade and consequent movement of the latter in the typing spacing direction against said abutment, and means mounting said blade locating device for adjustment whereby to place said inclined free edge in a selected position in which it is engageable with said tabular stop blade for determining the extent to which the latter is moved in the carriage return direction under the urge of said second spring.
14. In a typewriter or like machine having a stationary frame, a carriage mounted on said frame for travel in typing spacing and return directions, means for driving said carriage in the typing spacing direction, escapement mechanism for controlling said driving of said carriage, and means for disabling said escapement mechanism for enabling said carriage to be driven on a tabulating run;
tabulating run controlling mechanism comprising a tabular stop on said carriage, a tabular stop blade, means mounting said tabular stop blade on said frame for movement in the direction of carriage travel and also for movement transverse to the direction of carriage travel from a retracted position in which said tabular stop blade is not engageable with said tabular stop to a projected position in which said tabular stop blade is engageable with said tabular stop, a first spring urging said tabular stop blade to its retracted position, an abutment on said frame, a blade locating device on said frame having a face parallel to and spaced from said abutment a distance suiiicient to provide a predetermined space between said abutment and said face capable of receiving said tabular stop blade when the latter is in retracted position, said blade locating device having an inclined free edge providing space between said edge and said abutment for enabling said tabular stop blade to be moved in the direction of carriage return movement when said tabular stop blade is moved from within said predetermined space to its projected position and said inclined free edge being cooperable with said tabular stop blade when the latter is moved to its retracted position by said first spring for camming said tabular stop blade in the typing spacing direction thereby t0 direct said tabular stop blade into said predetermined space, actuating means for moving said tabular stop blade to its projected position, a second spring for moving said tabular stop blade in the carriage return direction and away from said abutment and into engagement with said inclined free edge of said blade loeating device when said tabular stop blade has been moved to projected position, and means' mounting said blade locating device for adjustment parallel to said abutment and said face and at an angle to said inclined free edge whereby to place said inclined free edge in a selected position in which it is engageable with said tabular stop blade for determining the extent to which the latter is moved in the carriage return direction by said second spring without varying the dimension of said predetermined space in the direction of carriage travel.
References Cited in the iile of this patent UNITED STATES PATENTS 1,772,768 Bache et al. f.-- Aug. 12, 1930 2,007,611 Myers July 9, 1935 2,303,878 Helmond a Dec. 1, 1942 2,353,095 Von Reppert July 4, 1944
US422015A 1954-04-09 1954-04-09 Tabulating mechanism for typewriters or like machines Expired - Lifetime US2757777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US422015A US2757777A (en) 1954-04-09 1954-04-09 Tabulating mechanism for typewriters or like machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US422015A US2757777A (en) 1954-04-09 1954-04-09 Tabulating mechanism for typewriters or like machines

Publications (1)

Publication Number Publication Date
US2757777A true US2757777A (en) 1956-08-07

Family

ID=23673037

Family Applications (1)

Application Number Title Priority Date Filing Date
US422015A Expired - Lifetime US2757777A (en) 1954-04-09 1954-04-09 Tabulating mechanism for typewriters or like machines

Country Status (1)

Country Link
US (1) US2757777A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153240A (en) * 1959-04-09 1964-10-13 Sperry Rand Corp Tape recording typewriters
US3876054A (en) * 1973-02-16 1975-04-08 Litton Business Systems Inc Typewriter carriage jam precluding and action jam release mechanisms

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1772768A (en) * 1927-06-21 1930-08-12 Salter & Co Ltd G Tabulating mechanism of typewriting machines
US2007611A (en) * 1934-03-01 1935-07-09 Royal Typewriter Co Inc Typewriting machine
US2303878A (en) * 1939-05-31 1942-12-01 Underwood Elliott Fisher Co Typewriting machine
US2353095A (en) * 1942-06-25 1944-07-04 Ibm Typewriting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1772768A (en) * 1927-06-21 1930-08-12 Salter & Co Ltd G Tabulating mechanism of typewriting machines
US2007611A (en) * 1934-03-01 1935-07-09 Royal Typewriter Co Inc Typewriting machine
US2303878A (en) * 1939-05-31 1942-12-01 Underwood Elliott Fisher Co Typewriting machine
US2353095A (en) * 1942-06-25 1944-07-04 Ibm Typewriting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153240A (en) * 1959-04-09 1964-10-13 Sperry Rand Corp Tape recording typewriters
US3876054A (en) * 1973-02-16 1975-04-08 Litton Business Systems Inc Typewriter carriage jam precluding and action jam release mechanisms

Similar Documents

Publication Publication Date Title
US2818958A (en) Escapement pawl control
US2757777A (en) Tabulating mechanism for typewriters or like machines
GB1016278A (en) Typing mechanism
US2303878A (en) Typewriting machine
US2209279A (en) Typewriting machine
US2984328A (en) Carriage positioning mechanism for typewriters or like machines
US2315992A (en) Typewriting machine
US2945578A (en) Variable spacing mechanism for typewriters
US2383260A (en) Typewriting machine
US2073902A (en) Noiseless typewriter
US3048252A (en) Carriage return control means
US2160251A (en) Typewriting machine
US2330960A (en) Typewriting machine
US2580318A (en) Power operated tabulating mechanism for typewriting machines
US2558413A (en) Carriage rebound checking device
US1333825A (en) Typewriting-machine
US2955695A (en) Proportional letter-feeding and adjunct features
US940395A (en) Tabulating device for type-writers.
US2527213A (en) Variable spacing mechanism for typewriting or like machines
US1067402A (en) Type-writing machine.
US1359231A (en) Combined typewriting and computing machine
US1417304A (en) Typewriting machine
US2411496A (en) Power operated typewriting machine
US1387939A (en) Segment-shift for typewriting-machines
US2644566A (en) Line locking and margin releasing mechanism for typewriting machines