US2311227A - Typewriting machine - Google Patents

Description

Feb. 16,1943. i G. F. HANDLEY ETAL TYPEWRITING MACHINE Filed Aug. 20, 1941 2 Sheets-Sheet l IN VEN TORS www HMYM Fa/,MT A MJ Patented Feb. 16, 1943 TYPEWRITING MACHINE George F. Handley, Gl

endale, and William O.

Michelsen, Woodhaven, N.,Y., assignors to Royal Typewriter Company, Inc., New York, N. Y., a

corporation of New York Application August 20, `1941, Serial No. 407,658 6 Claims. (Cl. 1971-114) This invention relates to typewrlting machines, and more particularly to mechanism for feeding and positioning continuous Webs comprising a plurality of connected form sheets.

In typing a plurality of similar invoices, checks, or similar forms, it is common practice to supply a continuous web or sheet comprising a plurality of serially connected individual forms which are fed successively to and then beyond the printing line as following forms move into printing position. The individual forms comprising the continuous web may all be the same, so that the beginning or rst typed lines on all the forms will be equally spaced below the tops of the respective forms. The distance between the last line of typing on each form and the first line of typing on the next succeeding form may vary, depending upon the typing of different numbers of lines on different forms, but in any event it usually is the equivalent of a rather large number of the spaces between individual lines, i. e., line spaces. In the interest of ease and rapidity of operation in the typing of such forms, it is desirable to provide mechanism including a member a single actuation of which, following the completion of typing on one of a series of connected forms and regardless of the number of lines typed on that form, will advance theA web to position the next succeeding form for receiving its first line of typing in the same relative position, on the newly positioned form, as the rst line of typing on the completed form. Such mechanism, broadly considered, has been proposed heretofore, and one of the objects of the present invention is to provide improved and efcient mechanism for feeding a web in the manner explained above.

In the copending application of one of the present applicants, namely, George F. Handley, Serial Number 377,570, filed February 5, 1941, which matured as Patent No. 2,285,087, June 2, 1942, there is disclosed and claimed a complemental feeding mechanism of the general character referred to above and which includes means for easily varying or selectively determining the feeding capacity or limit so as to make it readily adjustable to two conditions. The first such condition may be, for example, for feeding the web just the correct Aamount to position the leading form to receive the first line of typing, and the second condition may be for thereafter feeding the web a dierent amount following the completion of typing on each of the forms to position the next succeeding form to receive its rst line of typing. In the copending application, the setting of the feeding capacity or limit is determined by adjustment of a selective stop device carried by the handle which is operated to drive the feeding mechanism.

Another object of the present invention is to provide another improved construction including a feeding capacity determining device in which a selectively operable stop is carried lby the frame but which Vnevertheless is adapted to be placed in selected position by means carried by the operating handle.

A further object is to provide a simplified complemental web feeding mechanism.

Other objects will become apparent from a reading of the following detailed description, the appended claims, and the accompanying drawings, in which:

Figure 1 is a fragmentary plan View showing only some of the conventional parts of a typewriter carriage with mechanism embodying the invention'applied thereto, the parts being shown in their normal or inactive positions;

Figure 2 is a fragmentary section taken on the line 2-2 of Figure l, with parts shown in elevation;

Figure 3 is a fragmentary horizontal section taken onthe line 3-3 of Figure 2;

Figure 4 is a diagrammatic development showing a work sheet or web including a series of check forms and indicating the relative lengths of spacing corresponding to initial sheet feeding after insertion of a web in the machine, linespacing on individual forms, and feeding of the web to position successive forms to receive their first typed lines;

Figure 5 is a perspective view of a ratchet wheel shield unit; f

Figure 6 is a detailed view, partly'in elevation and partly in section, showing a known linespacing detent mechanism;

Figure 7 is a view similar to Figure 2 but showing the parts in the positions occupied at the end of an operation for positioning a first or leading form of a web to receive its rst line of typing following the insertion of the leading edge of the web in the machine;

Figure 8 is a detailed view, partly in section and partly in elevation, with parts broken away to show the rcooperation of a pawl with a ratchet wheel shield for returning the-latter to its normal or starting position;

Figure 9 is a detailed view, on an enlarged scale,

showing the pawl and a part of a ratchet wheel shield Figure 10 is a section on the line lil- I9 of Figure 9;

Figure 11 is a fragmentary, transverse, sectional view of a web-feeding cylinder or platen, pressure rolls, and paper pan;

Figure 12 is a view, partly in section and partly in end elevation, showing another construction embodying complemental sheet feeding mechanism;

Figure 13 is a section on the line IS-IS of Figure 12; and

Figure 14 is a fragmentary perspective view showing registering markers on a gear housing and gear, and drawn on an enlarged scale.

The drawings show only such parts of conventional typewriter construction as are necessary for an understanding of the manner in which paper-feeding mechanism embodying the invention may be applied to typewriters.

A part of a typewriter frame is indicated at A, and is provided with the usual frame rail I which supports the rail 2 of a carriage B by means of ball bearings 3. The carriage includes the usual end plates 4 4 (for the left-hand end plate, see Figure 6). A bushing 5 carried by the right-hand end plate 4 journals the right-hand end of a shaft 6 to which a sheet-feeding platen or cylinder 'I is fixed. YFront and rear extension posts 3 and 9 projecting outwardly from the right-hand end plate 4 serve to mount a supplemental end plate I which, as explained hereinafter, supports the feeding mechanism embodying the invention. The shaft 6 is extended through and beyond the supplemental end plate Il) and its projecting end is provided with the usual platen-rotating iinger knob I I. As shown in Figure 6, the cylinder shaft 6 is equipped with a line-spacing ratchet wheel I2 adapted to be yieldably held at line-spacing intervals by means of a pawl I3 pivoted as at I4 on the left-hand carriage end plate 4. A spring I5 connected to the pawl I3 and anchored on the carriage end plate 4 at a point not shown urges the pawl yieldably in a clockwise direction to effect yielding contact of the pawl roller I6 with the teeth of the ratchet wheel I2. This line-spacing ratchet and detent mechanism is of known form, being standard equipment in the Royal typewriter. As is well known, it serves to yieldably determine the successive definite positions in which the platen or cylinder 7 is yieldably held for determining predetermined line spaces. The typewriter may also be equipped with a known or suitable form of combined carriage return and linespacing lever (not shown) adapted to drive a pawl engageable with the teeth of the ratchet wheel I2 for effecting line-spacing as an alternative to turning the platen or cylinder by means ofthe finger knob I I.

As shown in Figure 1l, a paper pan I 'I projecting downwardly from the rear of the platen and then under the platen toward the front of the latter is formed with openings I8 and I9 for accommodating rear and front pressure rolls 20 and ZI, respectively, adapted to cooperate with the platen 1 for feeding the work sheet C from the rear of the platen, under it, and then up in front of the platen so as to be disposed at the printing line to be impacted by the type bars.

With the exception of the supplemental end plate I I] and its mounting on theY carriage, the parts thus far described are of known form and relative arrangement, and do not constitute the present invention. The invention comprises other parts to be described and combinations of such other parts with each other and with the parts referred to above.

Before describing in detail the illustrative embodiment of the invention, and in order to facilitate an understanding of the detailed description which is to follow, reference first is made to the diagrammatic showing in Figure 4, which indicates the desired steps of feeding which the mechanism is intended to accomplish. The work sheet or web C comprises a plurality of serially arranged check forms c1, c2, c3, c4, and c5. connected by lines of perforations at regular intervals. It is desired to type the first line L1, L2, L3. L4, and L5 of each form at the same distance below the top edge ofthe form and to type an additional line `or lines under the rst line on each form, the

number of additional lines on the several forms being different in some cases. Thus, the form c1 may have four typed lines altogether; the form c2 three typed lines; the form c3 three typed lines; the form c4 ve typed lines; and the form c5 three typed lines. It is desired to advance the web with certainty and rapidity to exactly the right position for receiving the rst line L1 of the form c1, and then with equal ease and rapidity to position the successive forms for receiving their initial typed lines regardless of how many lines have been typed on the preceding form.

The distance S which the web must travel from the time its leading edge first engages the platen and rear pressure roller 24) as shown in Figure 11 until it is in position for receiving first line L1 on the leading form cl will be a fixed amount, and, for the purposes of illustration, will be assumed to correspond to twenty-four line-spacing increments. Similarly, the distance s between the first typed line of each form and the first typed line of each succeeding form will be fixed and will be assumed to be equivalent to twenty-one line-space increments. The rotation of the platen 'i for line-spacing the web for the second and other additional lines on each sheet is effected by means ofthe usual line-spacing mechanism, such asthe finger knob II or a combined carriage return ,and line-spacing mechanism (not shown). The feeding of the web for moving it from the position shown in Figure 11 to the position for receiving the typed line L1 on the form c1 is accomplished by a single actuation of an operating member 22 having a handle 23. Advancing of the web from the position occupied during the typing of the last line on any form to the position for receiving the rst line on the next form also is accomplished by a single actuation of the member 22, and, inasmuch as this continuous feedingv movement will differ from the movement which rslt positioned the form c1 for the reception of the line'Ll, a selectordevice 24 having a nger piece 25 is provided for selectively determining the limit of movement of the manually operable member 22. As hereinafter is explained in more detail, the finger piece 25 of the selector device 24 is depressed, and the member -22 rocked forwardly to the limit of its travel to position the form c1 for the reception of the line L1, whereas, for advancing the web from the position occupied when typing of the last line on the form c1 has been completed to a new position for reception of the line L2 `on the form c2, the finger piece-25 of the selector devicel 24 is released, and the member 22 then rocked to a different limit of its forward movement.

, In the illustrative embodiment shown in Figures l to ,11, inclusive, the manually operable member 22 comprises a rock lever having a hub 26 adapted to turn or rock freely on a shaft 21 journaledon the supplemental end plate lll and a bracket 28 secured to the end plate I0 by screws 29. A notched or toothed ratchet Wheel 3B mounted on the shaft 21 is secured to a flange 3| on the shaft by screws 32. Also mounted on the shaft 21 and disposed inside of the end plate I8 is a`gear`33 constrained to rotate with the shaft by a set screw 34. The gear 33 meshes with another gear 35 held fast to the platen shaft B by a screw 36. Pivotally mounted at 31 on the lever 22 is a pawl 38 urged `into engagement with the ratchet wheel by a spring 39 connected between the pawl and a post 40 on the lever 22. In-operation, when the lever 22 is rocked forwardly toward -the operator, or counterclockwise as viewed in Figure 2, the pawl 38 will engage the teeth of the ratchet wheel 30 so as to drive the latter counterclockwise and, through the gears 33 and 35, drive the platen 1 clockwise; that is, in the web-feeding direction.

Means are provided for limiting the throw of the lever 22 in bothy directions and for automatically-controlling the vportion of the operating stroke during which the pawl 38 has operative connection with the ratchet wheel 33. A spacing variation adjuster or plate 4| has a hub 42 mounted on the shaft 21 between an enlargement 43 on the shaft flange 3| and the end plate |0. The hub 42 and plate 4| secured thereto are adjustable about the axis of the shaft 21. The plate 4| is formed with an arcuate slot 44 through which extend two adjustment locking screws 45 having threaded engagement with the supplemental end plate ID. The plate 4|V is formed also with a pointer 46 cooperative with a set of scale markings 41 for indicating the position of adjustment o-f the plate 4|. A stop pin 48 carried by the plate 4| limits the return movement of the lever 22 under the urge of a coiled spring 4!)A wrapped around the hub of the lever and having its ends anchored on the bracket 28 and the lever 22, respectively.v

Normally, the limit of the forward or working stroke of the lever 22 is determined by engagement of the pawl 38 with `a stop 50 positioned as shownin Figure 2, the p awl serving as a movable stop member. As will be described later, the stop 50 can be shifted Linder the control of the selector 24 for increasing the total amount of feed so as to position the rst or leading of a series of forms in a web for receiving its first line of typing. For thev present, the stop may be considered as being held in the position shownin Figure Y2, which is'the position itoccupies at all times except when'the rst form in a web is being moved up to the position for receiving its first line of typing. By loosening the locking screws 45, the plate 4| and the stop pin 48 may be so adjusted as to determine the total amount of sheet feeding which can be accomplished by a single operating stroke of the lever 22. The parts will be so adjusted that, when the lever 22 is moved a complete strokewith the pawl 38 in driving engagement with' the ratchet wheel 33, the web will be fed a distance corresponding to the distance between the first line of typing on one form c1 and athe first line to be typed on the next succeeding formez. Y

Whenmore than one line has been typed on a given form, it still will be desired to feed the web with a single stroke of the operating member 22 so as to position the next form for receivingrits feeding, a .shield 5| is mounted so as partially to surround the periphery of the ratchet wheel 30 and to prevent an operative engagement of the f from the ratchet wheel 3, and the pawl lug 59 is Y pawl 38 with the ratchet wheel during a portion of the stroke of the lever 22 corresponding to the amount by which the platen 1 has been rotated by the usual line-spacing means such as the cylinder knob The shield 5| is carried by an arm 52 extending from a disc 53 rotatable on the ange 3| of the shaft 21. A spring friction washer 54 interposed between the disc 53 and the enlargement 43 of the ange '3| yieldably urges the shield 5| to rock with the ratchet wheel 30. An arm 55 extending from the disc 53 is adapted to engage a stop pin 56 on the plate 4| forlimiting movement of the shield 5| during an operating stroke of the lever 22. An eccentric stop 51 held in adjusted position on the spacing variation plate 4| by means of a screw 58 is engageable by the arm 55 for limiting the movement of the shield 5| in the return direction.

Normally, after the iirst line is typed on a formy say, for example, the leading form c1, the parts will bein the positions shown in full lines in Figure 2. If only one line is to 'be typed before advancing the form c2 for receiving its first line of typing L2, the pawl 38 would corne into engagement with the ratchet wheel 38 immediately after the lever 22 has started its forward movement. Consequently, substantially the full stroke of the lever 22 will be utilized for rotating the platen. In Figure 2 the lever 22 and pawl 38 are shown in dotted lines in the positions occupied just prior to the end of the web-feeding stroke. When the leading edge of the pawl advances a little further, it will engage the stop 58, at which time the form c2 will be positioned to` receive its initial line of typing L2.

If, however, the three additional lines are typed on the form c1, making four typed lines as indicated in Figure 4, the shield 5| will have been carried around with the ratchet wheel 30 during the feeding of the web for line-spacing on the form c1. Consequently, during the rst part of the following working stroke of the lever 22, the pawl 38 will ride idly on the shield 5| for a distance corresponding to three line spaces, and will then drop into engagement with the ratchet wheel so as to drive the latter and the platen during the remainder of the working stroke of the lever 22. Thus, the feeding of the web b-y operation of the lever 22.is complemental to the line-spacing preceding operation of the lever, the total line-spacing being always a definite amount, so that operation of the lever 22 always will position the next form for the reception of its first line of typing.

When the lever 22 and pawl 38 are returned to the positions shown in Figure 2, the shield also mustlbe returned. For accomplishing this, the pawl sy provided with a lug 59 adapted to engage a lug B0 on the shield 5|, as 'shown in Figure 9. When the pawl moves in the direction of the arrow a, the lug 59 will drive the lug 68 and shield 5| so as to return the shield to the position sho-wn in Figure 2. Just before the completion of the return stroke, atail 6| on the pawl engages the stop pin-56, whereupon the pawl is cammed away lifted clear ofthe shield lug 60. The eccentric stop 51 is so adjusted that it will be engaged by the arm 55 just as the lug 59 becomes disengaged first line ofl typing.v To eect this complemental from the lug 88. The nice adjustment required for providing this timingl can be made easily by turning the 'eccentric stop 51 slightly. Moving of the pawl out of engagement with the .ratchet wheel S6 and freeing of the lug 60 make it possible for the shield 5I to be driven frictionally with the ratchet wheel 36 when the web is line-spaced before the next operating stroke of the lever 22.

Means operable under the control of the selector 24 are provided for increasing at will the total amount of web feeding which can be accomplished by a single operating stroke of the lever 22. The stop 56 previously referred to is carried by a stop mount 62 rockable on the platen shaft 6 and yieldably held in adjusted position by a friction washer 63 interposed between the hub ed of the stop mount 62 and the hub of the cylinder knob I I. Lugs 6 5 and 66 on the stop mount 52 are cooperable with a pin 61 on the end plate ill for limiting the shifting of the mount 62. An arm 6B extending from the stop mount 62 carries a pin 66 which is adapted to be operated by the selector 2d in a manner later to be described for shifting the stop mount from the position shown in Figure 2 to the position shown in Figures 7 and 8. Normally, the stop mount is positioned as shown in Figure 2, so that the stop 56 carried thereby is placed in the path of the nose end of the pawl 3S, the arrangement being such that, as soon as the nose end engages the stop 56, forward rocking of the lever 22 is terminated. When it is desired to increase the stroke of the lever 22 so as to provide an increased total feeding of the web, the stop mount 62 is shifted to the position shown in Figures 7 and 8, wherein the stop 5l) is placed further away from the axis of rotation of the ratchet wheel and pawl and in position to be engaged, not by the leading end of the pawl nose, but by a portion of the pawl intermediate the nose and pivot 37, as shown in Figure 7. Thus the lever 22 and ratchet wheel 36 can move further before being arrested by engagement of the pawl 38 with the stop 59, and this additional movement provides for the increased feed necessary to position `the first or leading form c1 of the web for receiving its first line of typing L1.

For moving the stop 'mount 62 to the position shown in Figures 7 and 8, the selector 24 is provided with slots 'I0 cooperable with screws II and l2 for mounting the selector to slide inwardly and outwardly on the lever 22. A spring 13 interposed between a pin I4 on the selector and the screw 'I2 xeol to the lever 22 urges the selector outwardly. At its inner end, the selector is formed with a stop-shifting arm I5 which is adapted, during an operating stroke of the lever and when the selector is pushed inwardly, to engage the pin 69 on the stop mount 62 to rock the stop mount from the position shown in Figure 2 to the position shown in Figures 7 and 8. The spring'washer 63 interposed between the stop mount 62 and platen knob II frictionally and impositively couples the hub of the platen knob i! to the mount 62 for shifting the latter to its Figure 2 position and holding it there in response to web feeding movement of the platen. 'I'he selector 24 is pushed inwardly for shifting the stop mount 62 only when the increased total web feeding is desired. When the selector is left in.

its normal position outwardly with respect to the lever 22, the arm 75 will not engage the pin 69 of the stop mount 62, and the mount will be maintained in its Figure 2 position.

By adjusting the position of the spacing variation plate 4I and determining its setting by reference to the position of the pointer 46 on the scale d?, the total amount of web feeding which can be effected by operation of the lever 22 can be varied according to the kind of forms to be typed upon. The setting of the plate 4I shown in the drawings could correspond, for example, to a total feed of'twenty-one line spaces when the selector 24 is not pressed inwardly, and a line spacing of twenty-four when the selector has been pressed inwardly to shift the stop mount 62.

In operation, the parts will be in the positions shown in Figures 1 and 2 when the web C rst is placed in the position shown in Figure 11 with its leading edge just contacting the rear pressure rolls 20 and platen 'I. To position the leading form c1 to receive its first line of typing L1, the platen must be rotated an amount corresponding to twenty-four line spaces, corresponding tothe developed distance S in Figure 4. The operator holds the selector 24 pressed inwardly by the same hand which grasps the lever 22, and then pulls the lever forwardly until it is arrested by engagement of the pawl 38 with the stop 58, as shown in Figure 7. During the latter part of this movement of the lever, the arm 'I5 on the selector will have engaged the pin 69 on the stop mount 62 so as to shift the latter and the stop 50 to the positions shown in Figures 7 and 8, thereby permitting the platen to be rotated an amount corresponding to twenty-four line spaces.

The four lines are then typed on the form c1, the line-spacing for the three lines succeeding the line Ll being eected by turning the knob I I or operating the conventional line-spacing lever (not shown). The rotation of the .platen during the line-spacing for the last three lines on the form c1 will cause the shield 5I to move around with the ratchet wheel 30 an amount corresponding to three line-spacing increments. Therefore, when the lever 22 is moved forwardly on its next web feeding stroke to advance the form c2 into position for receiving its first line of typing L2, the pawl 38 will ride idly on the shield 5I for a distance corresponding to three line-spacing movements of the platen, and will then drop down into engagement with the ratchet wheel, so that, during the succeeding part of the working stroke of the lever 22, the platen will be rotated an amount corresponding to eighteen line spaces. This feeding, taken in connection with the feeding accomplished by the three preceding line-spacing increments effected by rotation of the knob II or actuation of the conventional line-spacing lever, will amount to a total advance corresponding to twenty-one line-spacing increments, the equivalent of which is indicated at s in Figure 4, this being the distance between the first lines of typing L1 and L2 on the adjacent forms c1 and c2. During this stroke of the lever 22, the selector 24 is not pressed downwardly, and accordingly the selector 'I5 does not engage the pin 69 on the stop mount 62. Consequently, the stop mount has been left in the position shown in Figure 2 so as to engage the leading end of the pawl nose. When the cylinder or platen is turning to feed the web following the typing of the line L1 on the form c1, the spring washer 66 will cause the stop mount 62 and stop 50 to be returned to their respective positions as shown in Figure 2. Consequently, when the lever 22 is operated again (without the selectors being pressed inwardly), the stop 5I) will be positioned to limit the total feeding to an amount corresponding to twenty-one line-spacing increments. Ordinarily the selector is moved inwardly to shift the stop 50 to its Figures 7 and 8 position only when the and a post |35 on the lever |25. A stop pin vthe pawl for holding vspaced individually without pushing the selector in at all. However, it is'evident-that they selector Vdevice also could be used in the case lof forms which, within the continuous web or ysheet itself, vary as to the distance between initial lines of typing on adjacent forms.

Figures 12 and 13 show a construction embodying a simple andv ,improvedv complemental sheet or web feeding mechanism. The conventional typewriter parts VVdisclosed are similar to those embodied in the construction shown in Figures 1 to 11. A part of the typewriter frame Ais indicated at A and isprovided with a frame rail I which supports the` rail 2 of the carriage B by means of ball bearingsj.- The carriage comprises a frameincludinggend plates, one

only'of which is shown. A bushing 5 carried by the right-hand end plate 4 vjournals the right-hand end of a shaft 6 to which a sheet feeding platen or cylinder l is fixed. Front and rear extension posts IBB and |69 projecting outwardly from the plate 4 serve to mount a supplemental end plate H secured to the posts by screws III. 'I'he platen 'I may be rotated to perform individual line-spacing increments by meanssuch as the knob shown in Figure l, and which may be applied to the shaft 6 in Figure 12, or by the usual combined line-spacing and carriage return lever (not shown). Furthermore, the platenY or cylinder may be equipped with detent mechanism rsuch as that shown in Figure 6. I f

A bushing H2iixed in the plateHIl journals a shaft H3 formed with a flange H4 to which is secured a rotatable disc member H5. Speedmultiplying gearing interposed between the disc and the platen shaft includes a large gear H6 secured by a set screw to the shaft H3, and a small gear H8 meshing with the gear H6 and being secured in any suitable manner to the platen shaft 6. l

The disc I I is formed with a plurality of circumferentially spaced notches H9, |20, |2|, |22, |23, and |24, and with intervening smooth portions H9a, |202, IZI, |225., |23a, and |243. The disc notches are adaptedto be'contacted by an oscillatable pawl for eifecting complemental feeding rotation of the platen or cylinder 1. In the form shown, a lever |25 has a hub |26 mounting the lever for rocking or oscillation on the shaft H3, a screw |21 and the shaft fiange H4 maintaining the lever against endwise movement on the shaft. A spring |28 coiled about the bushing H2 and having its ends anchored, respectively, by a screw |29 on the plate H0 and a post |36 on the lever |25-urges the lever in a clockwise directionV as viewed in Figure 12. A pawl |3| pivoted on the lever as at |32 is urged toward engagement with the disc I I5 by a spring |33 connected between anv arm |34 on the pawl |36 carried by the supplemental end plate H0 is adapted to be received in a recess |31 formed in thepawl free from contact with the disc H5, and at the same time yieldably holding the lever |25 against rocking.

To limit counterclockwise movementfof the lever |25, i.e., to limit its sheet feeding or working stroke, a pin |38 is mounted in adjusted position on the platek I II'I andv is placed to be engaged by a curved portion |39 on the pawl, the arrangement being such that, when the lever. |25

is rocked counterclockwise from the position shown in FigureV 12, the pawl portion |39 will eventually engage the pin |38 so as to prevent further movement of the pawl and lever. In order that theV stop pin |38 may be positioned ad- ,justably,- it is supported on an adjustable mounting plate |49 lformed with arcuate slots |4| through which extend locking screws |42, the slots |4| being concentric with the axis of the shaft H3. Y

In operation, when the lever |25 is rocked counterclockwise, it will carry the pawl |3I bodily from the position shown yin Figure 12 until the pawl Amoves clear of the pin |36, permitting the pawl nose to drop down into driving contact with the disc notch H9. Continued movement of the lever |25 will rotate the disc H5, gear H6, gear H3, and cylinder 'I to feed the work sheet a distance corresponding to a plurality of `individual vline-spacing increments, the number of such increments being dependent firstly upon the extent of the smooth, circumferential disc portion |242abetween the notches |24 and H9,l and dependent secondly upon the number of individual line-spacing movements effected by rotating the shaft 6 and cylinder following the preceding positioning of the disc I5 in the position shown in Figure 12. VIn accordance with the invention, the spacingof the disc notches and, consequently, the circumferential extents of the several intervening smooth portions differ from each other in dependence upon a desired sequence of work sheet feeding operations. The circumferential extent of the smooth interveningY disc portion |24a is such that, starting with the disc positioned as shown in Figure 12, a stroke of the lever |25, causing the pawl to drive the disc through contact with the notch H9, will rotate the cylinder to position the work sheet for receiving a line of typing just twenty-four line spaces below the leading end of a web freshly yinserted in the machine before the operation of the lever |25. Thus, it may be said that the smooth portion |24EL is dimensioned for a total web feed corresponding to twenty-four line spaces. The circumferential extents of the Asmoothportions H9?, |2Da, |2|a, and |22a are shorter than the extent of the portion |2411. Theseshorter smooth portions are so dimensioned that, when the disc is rotated with the pawl in contact with any of the notches |20, |2|, |22, or |23, the web will be fed an amount corresponding to twenty-one line spaces. The extent of the invening portion |23a is such that, vwhen the disc is advanced by the pawls driving through the notch |24, the web will be fed an amount corresponding to twenty-four line-spacing increments.

It will be understood that, regardless of which of the disc notches is positioned to be engaged AIcy the pawl when the lever` |25 is rocked, the notch so positioned will be moved away from the pawl when the cylinder is line-spaced in individual increments 4by operation of the cylvindeAr-rotating kno-b or combined line-spacingVV with the extent of the smooth, peripheral portion in advance of the notch through which the disc is being driven.

Inasmuch as the total web feed accomplished following each stroke of the lever |25 varies, it is desirable that the parts be placed in predetermined starting positions, so that the sequence of feeding operations of the different extents will conform to the desired spacing of lines typed on the web. For assisting the operator in locating the parts in proper starting positions (the positions shown in Figure 12), registering marks on the frame and gear I6 are provided. In the form shown, the gear H6 is substantially enclosed by a housing |43 secured to the end plate lll? by screws IM. The front of the housing, i. e., the housing wall facing the operator, is formed with a sight opening M through which the gear l I6 may be seen by the operator. The housing is provided with a marker |46 immediately adjacent the sight opening |45, and the gear HG is Iprovided with a marker |41 which is in registry with the housing marker |46 when the parts are in starting positions. lIhe gear marker Hi? may be made by forming a slit or groove along the top of one of the teeth so as to distinguish it from the other teeth of the gear.

The mechanisms disclosed herein embody the invention in the forms now preferred, but it will be understood that various changes may be made in the construction and relative arrangement of the parts without departing from the invention as dened in the claims.

We claim:

l. In a typewriter or the like machine, a frame; a sheet-feeding cylinder mounted for rotation thereon; line-spacing means for effecting individual line-spacing movements of the cylinder; and complemental spacing means operable following one or more individual line spacing operations for positioning a work sheet in a predetermined position irrespective of the number of the preceding individual line-spacing movements, said complemental spacing means comprising a disc in driving connection with the cylinder, a pawl, and means for oscillating the pawl bodily, the disc being provided with a plurality of circumferentially spaced driving contact portions adapted to be engaged and driven by said pawl, there being extended smooth circumferential portions intervening between adjacent radial portions and over which the pawl may slide idly, the lengths of extended smooth circumferential disc portions differing according to a desired sequence of complemental work sheet feeding operations.

2. In a typewriter or the like machine, a frame; a sheet-feeding cylinder mounted for rotation thereon; line-spacing means for eiecting individual line-spacing movements of the cylinder; and complemental spacing means operable following cne or more individual line-spacing operations for positioning a work sheet in apredetermined position irrespective of the number of the preceding individual line-spacing movements said complemental spacing means comprising a disc in driving connection with the cylinder, a pawl, means for oscillating the pawl bodily, the disc being provided with a plurality of circumferentially spaced driving contact portions adapted to be engaged andV driven by said pawl, there being extended smoothk circumferential portions intervening between adjacent radial portions and over which the pawl may slide idly, a guide marker on said frame, and a Vguide marker movable in predetermined relation to movement of said disc rand being adapted to register with said rst named guide marker for indicating placementof the disc in a predetermined starting position.

V3. In a typewriter or the like machine, a frame; a sheet-feeding cylinder mounted for rotation thereon; line-spacing means for effecting individual line-spacing movements of the cylinder; and complemental spacing means operable following one or more individual line-spacing operations for positioning a work sheet in a predetermined position irrespective of the number of the preceding individual line-spacing movements, said complemental spacing means comprising a disc in driving connection with the cylinder, a pawl, means for oscillating the pawl bodily, the disc being provided with a plurality of circumferentially spaced driving contact portions adapted to be engaged and driven by said pawl, there being extended smooth circumferential portions intervening between adjacent radial portions and over which the pawl may slide idly, the lengths of the extended smooth circumferf ential disc portions diiering according to a desired sequence of complemental work sheet feeding operations, .a guide marker on said frame, and a guide marker movable in predetermined relation to movement of said disc and being adapted to register with said rst named guide marker for indicating placement of the disc in a predetermined starting position.

4. In a typewriter or the like machine, a frame; a sheet-feeding cylinder mounted for rotation thereon; line-spacing means for effecting individual line-spacing movements of the cylinder; and complemental spacing means operable following one or more individual line-spacing operations for positioning a work sheet in a predetermined position irrespective of the number of the preceding individual line-spacing movements, said complemental spacing means comprising a disc, a rst gear rotatable by said disc, a second gear meshing with said first gear and being in driving connection with the cylinder, a pawl, means for oscillating the pawl bodily, the disc being provided with a plurality of circumferentially spaced driving contact portions adapted to be engaged and driven by said pawl, there being extended smooth circumferential portions intervening between adjacent contact portions and over which the pawl may slide idly, a guide marker on said frame, and a guide marker on said first gear adapted to register with said rst-named guide marker for indicating placement of said disc in a predetermined starting position.

5. In a typewriter or the like machine, a frame; a sheet-feeding cylinder mounted for rotation thereon; line-spacing means for effecting individual line-spacing movements of the cylinder; and complemental spacing means operable following one or more individual line-spacing operations for positioning a work sheet in a predetermined position irrespective of. the number of the preceding individual line-spacing movements, said complemental spacing means comprising a rotatable member in driving connection with said cylinder, a paw1,. means for oscillating said pawl bodily, the rotatable member having a plurality of circumferentially spaced driving contact portions adapted to be engaged by said pawl, there being extended circumferential -portions intervening between adjacent driving contact portions yand' over which the pawl may slide idly in both directions, the lengths of the extended circumferential portions dii-lering according to a desired sequence of complemental work sheet feeding operations, a housing carried by said frame, a sight opening in said housing, and a mark rotatable in predetermined relation to said rotatable element and within said housing but being visible through said sight opening only when said cylinder and said rotatable element are in predetermined positions for the starting of the desired sequence of complemental work sheet feeding operations.

6. In a typewriter or the like machine, a frame; a sheet-feeding cylinder mounted for rotation thereon; line-spacing means for e'iecting individual line-spacing movements of the cylinder; and complemental spacing means operable following one or more individual line-spacing operations for positioning a work sheet in a predetermined position irrespective of the number of the preceding individual line-spacing movements, said complemental spacing means comprising a disc, a. rst gear xed to said disc to rotate therewith, a second gear meshingV with said vfirst gear and being drivingly connected to said cylinder, a lever oscillatable about the axis of rotation of said disc, a paw'l carried by said lever, said disc having a plurality of circumferentially spaced notches cooperable with said pawl and extended smooth circumferential portions intervening between adjacent notches and over which the pawl may slide idly, the lengths of extended smooth circumferential portions being in accordance with a desired sequence of complemental work sheet feeding operations, a housing on said frame substantially covering said iirst gear, a sight opening in said housing, a mark on the housing adjacent the sight opening, and a mark on said first gear adapted to be seen through said sight opening in registration with said housing marker when said disc is in position for cooperation of a predetermined one of said notches with said pawl.

GEORGE F. HANDLEY. WILLIAM O. MICHELSEN.

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