US1218118A - Paper-feeding device. - Google Patents

Description

J. F REIRDON. PAPER FEEDING DEVICE. APPLICA TION FILED JULY IZ, I913- 1 ,21 8, 1 1 8. Patented Mar. 6, 1917.

3 SHEETS-SHEET I.

,1; F; REI RDON. PAPER FEEDING DEVICE. APPLICATION FILED JULY 12, 1913.

Patented Mar, 6,1917. 3 SHEETS-SHEET 2 QQ 3 4. 3.. ,WMNN M willy Mu WIT/1518858.: v v am WITNESSES J. r. HEIRDON. PAPER FEEDING DEVICE. APPLICA'ITION man JULY 12. 1913.

. Pafenfed Mar. 6, 1917.

' 3 SHEETS-SHEET 3- INVENTOI? Z wig/v5) ll STATES PATENT @FFlGE,

JOSEPH F. EEIRDGN, OF KINGSTGN. PENNSYLVANIA, ASSIGNOR TO THE ADDER MACHINE COEIPANY, 0F WILKES-BARBIE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

PAPER-FEEDING DEVICE.

smears.

Specification of Letters Patent.

Patented Mar. a, rare.

Application filed July 12, 1913. Serial No. 778,687.

traces.

In said application, a, two-armed pawl drives a ratchet, step by step in one direction or the other, to advance or reverse the direction of-feed of the paper. Asingle drive means operates the pawl, and a shiftable latch determines which arm of the pawl shall be effective and the other idle.

This device, however, provides for a feed er constant degree, there being no means for advancing or reversing thk paper through more than a single line space interval.

@ne ob ect of the present invention-1s to enable the paper to be fed through varying distances on either advance or reverse line spacing, at the will of the operator, and to utilize in combination therewith, the ratchet and drive of the line space mechanism, disclosed in the application above referred to.

In rendering the line space mechanism variable, I have changed the construction and operation ,of the line space mechanism from the form on which this invention is an improvement, the'object being to improve such mechanism and obtain reliability and accuracy in variable feeding in either direction.

As one means tending to these ends, I have arranged for a line spacing adjustment which leaves the positi ely operating line space drive mechanism unaffected, and

thereby dispenses with parts liable to break or get out of order.

{)ther objects and advantages will be more fully disclosed hereinafter and particularly.

pointed out in the claims.

I in the accompanying drawings, Figure 1 is an end view of the carriage of the well known lVales calculating machine, equipped with one embodiment of my invention, the

device being at rest with the advance f e pawl positioned for operation, and the line space adjusting mechanism set, to. permit the paper to advance a single line space;

Fig. 2 is a sectional view, showing the usual end plate removed, to disclose more plain y the parts lying behind said plate;

Fig. 3 is a view similar to Fig. l, but partly broken away and disclosing the positions of the parts at the end of the forward stroke of the drive means, the advance feed pawl in engagement with the ratchetto turn it forwardly, and the line space adjusting mechanism set to permit the ratchet to advance three line spaces;

Fig. l is a similar view, showing the mechanism at rest, the advance feed pawl being disabled or rendered ineffective, and the reverse feed pawl positioned for effective operation, the line space adjusting mechanism being set to enable a reverse feed of two line spaces;

Fig. 5 is a view similar to'Fig. 1, showing the reverse feed pawl disabled, the line space adjusting mechanism being set to disable the advance feed pawl, the parts being at rest;

Fig. 6 is a rear view of that end of the carriage towhich the invention is attached.

7 is a detail perspective of the switch mechanism which disables the respective pawls.

In the well-known Wales calculator, a carriage casting 1 (Figs. 1 and 6) having ways supports a carriage 3, including end pieces 4 suitably connected by brace rods 5. An axle 6 journaled in the-end pieces, supports a platen 7, and a finger knob or twirler 8 (Fig. 6) fast on the axle, enables the operator to manually turn the platen forwardly or backwardly to advance or reverse the paper to bring a desired line to the printing point, or to insert and discharge advanced step by stepv through the drive .member 9, which on its forward stroke,

swings the driven member 11 from the position shown inFig. 1, to that shown in Fig.

3, and' an angle lever or fol-lower 13, 1+,

loose on the rock shaft 12, rocks with the driven member, due to a'spring '15 which presses arm 13 of the angle lever toward the driven member or ball 11. The angle lever, in turn, retracts an advance teed pawl 16 pivoted to the other arm let of said angle 'insure its engagement therewith. The drive member 9, on its return stroke, restores the driven member 11 to its Fig. 1 position, which latter member positively forces the angle lever 13, 14 rearwardly and upwardly to' cause the pawl 16 to turn the ratchet and platen'in the'usual manner. A cam edge ,on

the pawl lficontacts a roll 16 as the'pawl' approaches the end of its effective stroke, to disengage the pawl from the ratchet," and permit the ,platen to be tu'rned in either direction when the machine isat rest.

.If'the follower 13,14: and its pawl 16 partake of the complete forward. stroke of the driven member, the latter on its return stroke, will operate through the pawl. to turn the' ratchet and platen through the maximum line space stroke, or say, three line space intervals. It is desirable that this feed be varied to enable the paper to be fed through one or two linespace intervals at will, or even to disable the paper feed.

In applying a variable adjustment to the line space mechanism, I desire to avoid interference with the drive and driven, members 9 and 11 whose travel is constant and positive. and,hence. arrange the flexible conneetion between the follower 1'3, 14 and theswing or oscillate a shittable member 21 pi\' oted at 22 to the end plate 4. A series of graduated shoulders orabutments 24. 25 and Q 3, preft-u'ablv termed on one wall of an opening 27 in the member 31-. are thus adjustable into and out of ,the path of a stop 28 on the follower ll, which projects through the opening 27. Said abutments arrest the stop at predetermined points in its forward stroke to effect variations in the advance feed of the paper, depending upon the particular abutment brought to effective position.

Any one of a series of notches 29 on the lock plate 19, and corresponding with the abutments 26, fits over a pin 30 on the end plate 1 to holdfth'e shiftable member where adj usted.

.Vith abut1nent2-1 in the path of the stop 28, (Fig. 1), the latter is arrested shortly after the follower 13, 11, starts "on its forward stroke, and thus restricts the retraction of the pawl 16, and hence its-active stroke, to the minimum effective degree, which permits a rotation of the platen through one line space interval only. The forward stroke of the driven m'ember 11 is not affected, butthe spring 15 is further tensioned after the arrest of the follower 13, 14'. The

driven member travels idly on its return stroke until it picks up the follower 13, 14, to restore the latter to its position of rest,

(Fig. 1), and-in so doin propels the pawl 1G to drive the ratchet and platen one 'step orlinevspace interval. lVhen the abutment :26, is adjusted into the path of the stop 28, (Fig. 3), the drive and driven'members being shown at the end of their forward strokes,- it permits the maximum ettective stroke of thepawl 1Q, thus feeding the paper througlnsay, three steps or line space intervals.

Fig. 5 shows the abutment 23 inthe path of thestop 28- to lock the follower against the action of its spring 15, and thus disable the advance paper feed.-

The same drive mechanism operates a back or reverse line spacing mechanism, shown most clearly in Figs. 2, 1,'and 5, which mechanicalljv' steps the paper or work sheet backwardlv instead of forwardly. An I i arm 31-fast on the rock shaft. 12 operates. a link 32 connected to one arm of a rocking. lever 33 pivoted on a pin 34, the opposite arm of which rocking lever supports a back spacing or reversing pawl 35, adapted to-engage the opposite Side of the ratchet from pawl 10. A spring 36 tends to draw the 're versing pawl toward the ratchet 1T.

The reverse. feed pawl 35 lies retracted, as shown .in full lines in Fig. 4, when the machine is'at rest. The drive member H on its forward stroke. swings the driven member 11 and, throughtbe linkage 211, E39 and 33 just described. drivesthe pawl 33 against the ratchet 17, as indicated in dotted. lines in Fig. l, to turn the latter. An inclined prong or finger 3? on the pawl 15 rides up onto a displacing stud or bariifi (see full lines Fig. 3) located in its path. as

the reversing pawl approachesthe end of its etlective stroke. to disengage the pawl 2-3.) from the ratchet'lT. to prevent avertbrow of the platen, such disengaging aetion always taking place at a fixed point in the throw of the pawl.

The reverse teed pawl passes through a guard 39 on the carriage, which guard is The controller 18 which regulates the line spacing throw of the advance feed pawl 16,

also governs the line space throw imparted by the reverse feed pawl to the platen.

Spring 36 presses the pawl 25 against aon the line space controlgage 40 mounted ling mechanism, as the lock plate 19, said pawl, when in operation, riding back and forth over the gage. Turning the controller 18 in one direction or gage, mounted concentrically. therewith, toward and from the pawl 35 to swing the latter toward or from the ratchet 17. Permitting the pawl to approach the ratchet, enables the pawl, on its efi'ective stroke, to more quickly engage the ratchet, to turn it and its associated platen through a greater are than when the pawl is adjusted in the opposite direction.

The series of notches 29 correspond with the various positions to which the reversing pawl 35 is adjustable, and the graduated abutments 232-6 may be employed as an indicator to determine the desired adjustment of the reversing pawl, since the adjustments of both the advance and reverse feed pawls correspond. The gage 40, when adjusted to the limit of its throw in one direction (see Fig. 5), prevents the engagement of the reversing pawl and-the ratchet, the pawl traveling idly on the gage as the drive member 9 reciprocates.

A switch mechanism e1 journaled on the.

pin 34, and comprising a plate having a air of studs 42, 4:3, operates to disable either me space pawl while the other is operative. By

' turning a spring-pressed switch-controlling button at, (Fig. 6) fast on the switch plate ll, in one direction, the stud $2 is interposed in the path of the advance teed pawl from pressing its 16 to prevent spring 16 the pawl'16 in tooth against the ratchet, such case riding idly back andforth along the stud. The same movement of the switch shifts the stud 43 away from the reversing pawl 35 to free the latter to the action of its spring 36, and enable it to operate eiiectively. Shifting the switch in the opposite direction interposes the stud 4.3 in the path of the reversing pawl 35 and releases the advancing pawl 16 for effective operation. One of the switch studs 42 is preferably elongated (Fig. 7) to seats 45 to hold the switch where adjusted.

The usual line space detent mechanism comprising a notched wheel 46 (Fig, 1) on the axle 6, and a spring-pressed detent 47 the other, shifts the fit into either of two eltective stroke.

engaging said wheel, tends to prevent accidental overthrow of the platen in either direction due to momentum.

Changes may be made in the form and arrangement of the several parts set forth, without departing from the spirit and scope on this invention.

What I claim as new, is

1. In a paper feeding device, the combination with a ratchet,'anda platen turning therewith; of means to turn the ratchet in either direction, including an operating drive,.having a stroke of constant length; a

pawl adapted to be advanced by the drive to turn the ratchet in one direction, said pawl normally lying in advanced position: and a second pawl adapted to be advanced by said drive to turn the ratchet in the opposite direction, and'normally lying in retracted position.

2. In a paper feeding device, the combination with a ratchet, and a platen'turning therewith; of means to turn the ratchet in either ,direction, including an operating drive, having a stroke of constant length; a

follower; yielding means connecting the fol'-' lower and drive; means to arrest the follower at different points in its stroke; a pawl connected with the follower and normally lving in advanced position; and a pawl-positively connected with-the drive and normally lying in retracted position.

In a paper feed, the combination with.

a platen; of forward and backward line space feeding pawls; a ratchet common to both pawls; drive means likewise common to both pawls, and traversing a constant path means to regulate the line space intervals when the platen is advanced; a separate means to regulate the line space intervals when the platen is reversed; and a controlley common to both line space regulating means.

i. In a paper feed. the combination with a platen. a ratchet, of line space mechanism,

including separatepawls, to advance or' to efiectiveisti'oke, to disengage the pawl from the ratchet. 5. In a paper feed with a platen and ratchet, andmeans to drive the ratchet and platen step by step in one direction of a reversing pawl to engage the ratchet'and reverse the platen step-by step: a linger on the reversing pawl; .and a displacing member in the path of the finger and engaged thereby, to withdraw the reversing pawl v ratchet, at a predetermined point in its 6. In a paper feed device, the combination with a platen; a ratchet and means to adt'rom engagement with the reverse the paperstep by step; and means contacted by the reversefeed pawl during its.

vance the ratchet and platen: of a reversing device, the combination nation with a platen of line space mechanisin to advance and to reverse the platen, including a rotatable ratchet, and forward and reverse line spacing pawls; and a switch having disabling studs. one or the other of- -\\'l1lCl1 is adapted to he inthe path of its corresponding tive.

81 In a paper feed mechanism, the combination with a platen of line/space.mechanis ln to advance and to reverse the platen, including a rotatable ratchet and forward and reverse line spacing pawls; and a switch having disabling st'uds, one or the other of which is adapted to lie in the path of its corresponding pawl to render the latter ineffective; one of said studs seating in either of two sockets to hold the switch where adpawl to render the. latter ineffeo justed.

9. In a paper feeding device, the combination with a ratchet; and a platen turning therewith; of line space mechanisi'n', including an operating member having a constant length of travel; a follower; means to yieldingly connect the follower and said member to press the follower toward the member;

and a ratchet-driving pawl connectedwith the follower, said follower normally having a length of travel coincident with the operating member.

l0. In va'pa per feeding device, the combination with a -platen,land aratchet; of means to turnrthe ratchet, including a driven member; a follower normally tending to lie in contact with the driven member as the. latter travels back and forth; a ratchet-driving pawl connected with the follower :to travel therewith; and means to arrest the follower at different points in its following stroke, to vary the lin spacing throw of the pawl. 1

11. Ina paper feeding device, the combination with a platen, and a ratchet; of meansto turn the ratchet, including'a driven member; a follower normally tendingto lie in contact with the driven member as the lat-. ter travels back and forth; a ratchet-driv ing pawl connected with the follower to travel therewith; a stop on the follower; and adjustable means to arrest the stop at different points in its travel, to varythe line space intervals.

12. Ina paper feeding device, the combination with a platen, and a ratchet; of means to turn the ratchet,;includ ing a driven member; a follower normally tending to lie in contact with the driven member as the lattertravels back and forth; a ratchetdriving pa wl connected with the follower to travel therewith; a stop on the follower; an

BESTAVAILABLE COP,

adjustable member having a series of gradu' ated abutmeutsshiftable into and out of the path of said stop to arrest the follower atvarious points in its travel, and control the line space intervals. 4

13. In a. paper feeding device, the combination with. .a platen, and 'a ratchet; of means to turn the ratchet, including a positively driven member; a follower normally tending to lie in contact with the driven member as the latter travels back and forth;

a ratchet-driving. pawl connected with the follower to travel therewith; a stop on the" follower; an adjustable member having a series of graduated abutnn-nts shiftablc luff)- aud-out of the path of said stop to arrest the.

follower at various pointsin its travel, and control the lme space intervals; and means to set the adjustable member and lock it where adjusted;

; 14:. In a paper feed mechanism, the combination with a platen,- and a ratchet; of

means to turnthe-ratchet' and platen in one direction or the other, including an operatingmember having a constant length of travel; a follower actuated thereby; means to'vary the length of travel of the follower; a pawl connected to the follower to engage bination with a platen, and a ratchet; of

means to turn the ratchet and platen in one direction, including a drive member; a driven-member positively rocked thereby in both directions;a follower coacting with the driven member; a spring to yieldingly press the follower toward the driven member; apawl on the follower to engage thc ratchet and turn the platen; and a second pawl operated from the driven member, to turn the platen in "the opposite direction.

16. In a paper feed mechanism, the co1nbination with a platen; and a ratchet; of a feed pawl to turn the ratchet; drive mechanism-v for the ratchet having a constant travel; andmeans to vary the line space intervals, including a follower normally in contact with the drive mechanism; andmeans to detain the follower at different points in its travel irrespective of the drive mechanism.

17. In a paper feed mechanism, the combination with a platen; a ratchet; and a feed pawl to turn-the ratchet; of a follower connected with the pawl; a drive mecha-- nism operable through a constant path to actuate the follower, and separable therefrom; and means to effect such separation.

18. In a paper feed, the combination with a platen;jand a ratchet; of drive mechanism operable through a path of constant length;

a follower dapted to contact the drive mechan sm, and separable therefrom; means to detain the follower at diii'erent points in its travel; and a feed pawl driven from the the drive mechanism.

20. In a paper feed, the combination with a platen ;-and a ratchet: of drive mechanism operable through a path of constant length; a feed pawl; a follower to operate the pawl, and normally in contact with the drive mechanism throughout travel; and a line space adjusting member having a series of shoulders shittable into the path of the follower to, arrest the latter at dilierent points and thereby effect a separation between the follower and its drive mechanism.

21. In a paper feeding-device, the comhination with a platen; of forward and reverse line space mechanisms, including pawls to turn the platen in one direction or the other; a driven member positively rocked in both directions and common to both pawls; a follower to operate with the driven member and connected to one of said pawls; a stop on the follower; a shiftabl'e member having a series of graduated abutments adjustable into and out of the path'ot the stop to vary the degree of rotation imparted by the last-named pawl to the ratchet; a controller having a slip connection'with the shiftablc member to ad j net the latter; means to lock the controller where adjusted; a linkage connecting the remaining pawl and driven member; means tending to shift both pawlsto efiective position; a switch mechanism to prevent the effective operation of either of said pawls and enable the other to operate; and a gage adjusted by said controller to vary the degree of rotation imparted to the platen by said remaining pawl.

92. In a paper feeding device, the combination with a platen; of forward and reverse line space mechanisms, including pawls to turn the platen in one direction or the other; a drive common to both pawls; ,a yielding connection between one of said pawls and the drive; adjustable meansto arrest the pawl at difierent points, to vary the line space interval through which the platen is turned by the pawl; a controller to govern said adjustable arresting means; and a gage also governed'lov said controller and operating the remaining pawl to vary the line space interval through which said remaining pawl drives the platen.

In a machine of the character set forth, the combination with a platen; of line space mechanism therefor, including a ratchet; advance and reverse feed pawlsto turn the ratchet in one directiou or the other; meansto drive the pawls. having a path of constant length; and line space regulating mechanism comprising a lll(.

of shoulders to arrest one of the pawls at 7 direction of rotation of said ratchet at will;

drive mechanism for said pawls. traversing a constant path; and means to vary the degree of rotation imparted by the pawls to the platen.

JOSEPH F. REIRDON.

In the presence of- E. M. Dnrnron, RALPH S. lVARFIi-JLD.

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