US2136820A - Typewriting machine - Google Patents

Description

Nov. 15, 1938. Q R, MABON 2,136,820

TYPEWRI TING MACHINE Filed Sept. 12, 1936 4 Sheets-Sheet l Nov. 15, 1938. c. R. MABON 2,136,820.

TYPEWRTTING MACHINE Filed Sept. 12, 1936 4 Sheets-SheetB wall/ A -N0v. 15,1938. c, R AS N 2,136,820

' TYPEWRITING MACHINE Filed Sept. 12, 1936 4 Sheets-Sheet 5 Nov. 15, 1938. c, MABQN 2,136,820

TYPEWRITING MACHINE Filed Sept. 12, 1936 4 Sheets-Sheet 4 Patented Nov. 15, 1938 UNITED STATES PATENT OFFICE TYPEWRITING MACHINE Carl R. Mabon, Niagara Falls, N. Y., assignor to Gilman Fanfold Corporation; Niagara Falls, N. Y., a corporation of Delaware Application September 12, 1936, Serial No. 100,521

20 Claims.

It is an object of the present invention to pro- I vide paper feeding means independent of contact with the platen and of the usual feed rollers contacting a cylindrical or rotatable platen, said paper'feeding means being located to one side of the platen and, as to one important feature, comprising an endless succession of pins,'a plurality of which have simultaneous engagement with a plurality of holes or feed apertures in the paper supply strips to advance or pull said paper strips over the platen.

Another object is to provide means for applying improved paper 'strip feeding mechanism to a typewriting machine wherein the paper carriage is shiftable endwise, or in letter spacing direction, the paper carriages of such machines being also customarily laterally shiftable transversely of their endwise shift for upper and lower case characters.

Another object is to provide an improved feeding means for machines of the class mentioned and constructed as a unitary device readily attachable to the paper carriage of the machine.

Another object is to provide a comparatively light weight improved feeding means which has minimum tendency to disturb the proper balance of the carriage during the shifting thereof, even though located at one end only of the'carriage,

and which will not add unduly to the weight of the carriage and so that movement of the latter endwise and sudden stopping thereof may be ac-- complished without injuring the machine.

Another object is the provision of a simple and efficient combined paper guiding and feed mechanism supporting frame which is shiftable with the paper carriage and effectively supports the feed mechanism and rear paper guides in operative relation and is adapted for feeding, handling and guiding of paper of different widths.

Other objects and advantages will appear hereinafter.

The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts which will be exempliiied in the construction hereinafter set forth, and the scope of the application of which will be indicated in theclaims.

In the accompanying drawings forming part of this specification and wherein similar reference characters refer to similar parts throughout the several views Fig. 1 is a perspective view, partially diagrammatic, of the invention as applied to a typewriting machine of the character referred to;

Fig. 2 is a side view of the same, with parts broken away;

Fig. 3 is a longitudinal section of the same, with parts broken away, and showing the paper in I dotted lines; 10

Fig. 4 is a detail section substantially on the line 4-4, Fig. 3, parts being shown as broken away, and the paper being shown in dotted lines;

Fig. 5 is a similar view, the section being taken on the line 55, Fig. 3, a paper guiding device being shown as raised to inoperative position;

Fig-6 is a detail perspective view of the frame support for the paper feeding means:

Fig. 7 is a detail section on the line l'|, Fig. 3;

Fig. 8 is a detail side view of one of the rear 20 paper guides, showing the support rods'therefor and the cam lever;

Fig. 9 is a similar view of the center, rear guide for the paper, showing the support rods therefor; r 25 Fig. 10 is a detail perspective view of the spring impelled paper guiding device, shown as raised to inoperative position;

Fig. 11 is a detail fragmentary perspective diagrammatic view of a type of stationery that 30 may be used; 7

Fig. 12 is a similar view showing other stationery that may be used; and

Fig. 13 isa detail section on the line lit-I3, Fig. 5. 85

In these drawings, the numeral l designates generally a typewriting machine which may be of usual known construction except for the embodiment of the present invention therein. It may involve power actuation and control as in 40 the electric typewriting machine, or other power actuated machines, or it may be the ordinary ,manually actuated and controlled typewriting machine. The paper carriage, as the platen carriage 2 is shiftable as usual and by the usual de- 45 vices, and carries the platen 3 rotatably mounted to shift with the carriage. The type bars are shown in part at 3a, the linespacing wheel 3b is controlled by a suitable line spacing pawl and a detent as customary (not shown); a finger 5 wheel for manual control of the platen is shown at 30, and the character keys are shown in part in dotted lines at 3d.

Located to one side of the platen and independent of contact therewith is the paper feeding alternate links 4 of which each has a pin 5, so as to provide an endless succession of pins 5, a plurality of which have simultaneous engagement with a plurality of feed apertures 6 of paper record strips 1 to pull said strips from around the platen. These pins may be of cylindrical form with rounded tips, as shown, although other forms maybe used. in some. cases,v and the strip engaging-and feeding sections of the pins are disposed in a plane located inside the pitch-line of said chain or line of centers of the pivots of said chain with the terminals or tips of the pins in the plane substantially of said pitch-line or line of centers, whereby the engagement'and disengagement of said pins with respect to said apertures will be accomplished without undue disturbance or mutilation of the paper margins construction of the chain and the pins and their relation to each other and to the sprocket wheels l2, hereinafter mentioned, is the sameas described in applicants prior applications, Serial No. 54,102, filed December 12, 1935 and Serial No.

cluded herein.

. spaced, rigid, metal frame blocks 96,516, filed August 17, 1936, to which reference may be made for more detailed description, only a brief description of the chain and pins is in- This construction of the chain and pins as fully described in the said prior copending applications is generically claimed there in, while the invention of the present application is wholly concerned with improvements over the prior applications, the claims of the present application being confined to the improvements.

This paper f ng means is embodied in a selfcontained mit readily attachable to the paper carriage of the machine, comprising parallel, or bearing blocks or brackets 8 and 8', a transverse rigid part 9 having at one end an extension I0 forming a longitudinal support or track for those links of said chain the pins of which are engaged with the feed apertures of the paper record strips to eifect feeding, the parallel stub shafts ll of the end sprockets l2 which engage the pivots 4b of said chain having ballbearings located within recesses ll at each end of each of said bearing blocks 8 and 8', each sprocket wheel I! being in duplicate and fast to a sleeve I2a, set screws l2b engaging aligned apertures of the hubs of said wheels and said sleeve serving to make the same fast to said stub shafts, so that these parts rotate in unison.

- The links I of the chain which carry the pins 5 have each a pin support or supporting part la,

laterally projecting fromthe links, and which also supports the margin of the paper to be fed.

and each pin supporting link may be bent from integral metal to p construction; an ou vide side members of similar r transverse member connecting said side members and said laterally pro-' jecting part or member, the transverse pivots 4b,

-connectingsaidlinks to the alternate links 4c,

having bearings at their ends in said side members of the links and engaging the teeth of the duplicate sprocket wheels l2.

The aforesaid unit also comprises means to guide the paper record strips and to maintain am or plate I'l pivoted at its outer end at I! to a support [9, and having an inner, slotted, strip guide and retainer part or foot 20, the slot 2| of which is long enough to receive the rounded tips of those pins of the chain which are in engagement with said feed apertures of the paper 5 and lie along the tangential or elongated path of the chain between the longitudinally spaced sprocket wheels i2. A spring 22 is secured to said plate by bolt of'clip 22, and is curved up-' wardly over and 'slidably engagesa roller 23 of said support, to thereby hold said spring tensioned to press the slotted foot 20 of said plate towards the paper record strips until engaged by integral stop Illa of said support, said plate being adapted to be raised to inoperative position as seen in Figures 5 and 10 against the tension of its spring. The support I9 is attached to the top of the transverse part 9 by suitable means, such as screws, "and the retainer is thus mounted on the bearing block 8'.

A single attachment or fastener bolt l5 for said unit engages center perforations it of said blocks 8 and 8', and is provided with the nut l5a to clamp the same securely in position relative to a standard or othersupport 33 to be described and the upper end of whichlies between said brackets, said bolt passingthrough an opening in said standard, a suitable spacing collar [512 being located between one of said brackets and said standard, as seen in Fig. 5.

The endless chain of the paper feeding means i is shown as driven by sprocket chain 24, engaging a sprocket wheel 25 on the platen shaft and a sprocket wheel 26 on the shaft of the rear sprocket wheels of the paper feeding means. Or a gear drive of any suitable type may be substituted for the chain and sprocket drive.

The paper feed rollers 21 found in usual typewriting machines, for gripping the paper tothe platen are shown as shifted to inoperative posi- 4( tion in Figure 3, as the feed mechanism disclosed herein may be used to good advantage without said feed rollers.

It is preferred to utilize the paper strip feed mechanism disclosed herein for the feeding of 4i continuous, paper record strips, as the record strips 1, coming from a supply at the rear of the machine. These strips also have a series of preformed feed apertures as 6, and whereas similar 1 pin feed mechanism for coaction with apertures 54 at both margins of the record strips (see Fig. 12) may be used it is preferred to arrange the pin feed mechanism for coaction with but one margin of the stationery or record strip as seen in Figure 11. By so doing, practically the full width of the 5 machine is available for consideration and manipulation of the record strips, and also record strips of different widths may be employed without altering the position of the pin feeding mechanism.

Referring to Figure 11, a portion of the lengths 6 of three relatively superposed, continuous, record strips I, are shown, such strip assemblage having two interleaved and also continuous transfer or carbon strips 28, the transfer strips being narrower than the record strips. In each of the 6 record strips is a row or series of feed holes or apertures 6, which are usually circular and equispaced along the strips, the record strips having each a series of similar printed forms underlying one another in registered or aligned relation, 7 when the feed apertures 6 of the forms are in superposed registry. There is but one series of feed apertures 6 in the record strips of Fig. 11, the carbon strips 28 being disposed laterally out of mtry with the feedapertures 6, and the rea tached together and capable of relative movement.

In Fig. 12 the printed forms and feed apertures have the same'relation to each other as explained in connection with Fig. -11, but in this instance the feed apertures occur at both margins of the strip. The carbon strips-of Figs. 11 and 12 may be of full width and provided with feed apertures if desired. As shown in Fig. 12, staples 29 serve to attach the'several superposed strips together, these attaching devices being distributed at intervals throughout the length of the assemblage of strips, and preferably being on the transverse weakening lines 30, which latter occur between each of the adjacent printed forms, so that when the tear off is made along'such a line the staple will drop out. As shown in Fig. 12 the carbon sheets may be provided with arcuate central slits 3| around one side of and spaced from said staples, said slits forming part of said weakening lines, and when a tear-"01f is made along a weakening line those parts of the carbon sheets included by said slits will remain as tabs 32, ex tending beyond the ends of'thepaper strips at the parted or torn off edge, the staples remaining in position connecting the carbon sheets so that the lattermay be withdrawn all together by grasping said tabs with the fingers.

For supporting and guiding the continuous paper strips coming from a suitable source of supply at the rear of the machine, and also for supporting and positioning the pin feeding mechanism in operative relation, a device is employed which is shiftable with the paper carriage or platen carriage 2 of the machine. In the embodiment illustrated, a standard 33, being a strong- -and rigid plate, is carried by the platen carriage 2, being dispersed in the rear .of the carriage, and may be detachably secured to the carriage 2 by screws as 34!. "To assist in bracing. the standard 33 in position onf' the platen carriage and in supporting the'paper strip t'o be fed, a second standard 35, is carried by the opposite end of carriage 2, or is spaced from standard 33, and is detachably affixed to the carriage by suitable fasteners, as the screw 6. A rearward extension of thestandard 33 is provided by the strong and rigid plate 35', which is detachably afilxed to the standa'rdplate 33 by the screws 36', the plate 35' having a depending portion 4], lying close alongside the standard plate 33, with its front edge abutting the rear of the carriage 2, as indicated at" 31, to assist in holding or bracing the plate 35' in position.

The bracket or bearing block 8' is disposed on the outer face of the standard 33 (see Figs. 2 and 5) and the, bolt [5 passes through a fitting opening in standard 33 and through the central opening I6 in block 8'. By screwing up nut l5a,

the block or bracket 8, which supports the chain of links 4,. may thus be clamped to standard 33, and a suitable sleeve i5b is located between this standard and block in accordance with the desired lateral position of the block 8. At each end of block 8' is a ball bearing for rotatably sup;- porting the respectivestub shafts ll. Should the pinfeeding mechanism be duplicated at the" opposite end of the platen. carriage, a similar mounting therefor may be employed at said opposite end. It will be seen that the plates 33and .35 provide, in effect, a standard at one end of the platen carriage, another standard 35 being provided at the opposite end, and that the feed a mechanism is so disposed that the pins travel in I 2,138,820 Y spective strips 1 and 28 0mg. 11 being not at a path between these two opposite standards, as alsov do the apertured paper strips.

For further bracing in accurate position the standard on which the series of feed pins is mounted, and in order to support certain rear paper guides and form an open or skeleton-like rear frameworkof relatively light weight persmitting convenient manipulation and inspection of the paper strips and to permit paper strips of different widths to be utilized as desired, without adjusting. the lateral 'position of the series of feed pins, a series of barsor rods as and 40 connect I the opposite standards just mentioned and, together with said standards, form a rigid, open orskeleton frame, said rods being firmly joined to the standards, and serving also to brace the standards in position. Thus there is provided an open passageway in the carriage in which the paper strips may feed past the rods 4|] and 40' and around the platen 3. The bars 40 and 4|! may be secured to the standards as by screws, so that they may be detached from the standards, when desired. By providing the plate 35, detachable from standard plate 33, it will be seen that the bars 40 and t0 and the rear strip-guides hereinafter described, may be detached from the machineas a unit without demounting the pinfeed mechanism, or its supporting standard 33,

. and it will further be seen that the pin feed mech- -record strips being delivered rearwardly out of the machine. e

The lateral guides 38 for'the paper may rest at their forward ends upon the rear ends of the usual paper table or guide 3| of the machine, to form rearward extensions of such" table. These lateral paper guides have each an outer, lateral,

upstanding flange 42, and as said guides are laterally adjustable, said flanges are adapted to lie close to or abut against the opposite edges of the paper record strips to assist in retaining the latter in proper position aligned or engaged with the pins of the paper feeding means during endwise shifting of the carriage, such shifting being subject to abrupthalts which might otherwise disturb the paper strips.

In order to hold the paper record strips down to said guides, each of-the lateral guides 38 may be provided with a strip smoothing and tensioning device comprising a spring clasp or a clip 44, engageable over a flange 42 of the lateral guide and having a lateral extension 43 overlying the guide 38 and adapted to. rest on the paper to slightly tension and smooth the advancing paper strips. As these attachments are adjustable longitudinally of the guides they may be disposed as desired and they are also readily removable, as will be obvious. The central portions of the paper guides 33, are shown asterminating at their lower ends adjacent the inner of the lower cross rods 40. The lateral guides 38 are held in position, as laterally adjusted, by suitable means,

In operation, feeding and line-spacing is ef-f fected by causing the pins to move in their endless path, this being effected by driving the endless flexible band or chain of links, this chain 10 serving also as a pin-guiding member for carrying the pins in the endless path. The movements of thechain are in response to operation of the ratchet wheel 3b, which operation is effected by the customary line-space actuating 15 mechanism found in typewriting machines. The paper strips shift with the platen carriage in both letter spacing and line spacing directions,

and are subject to sudden stops, especially inrapid typing and shift of the platen, carriage in 20 letter spacing direction, the return shift of the carriage usually being speedy and stopping with* considerable shock. By reason of these various member, carrying wheels and mounting means being located at one end only of said carriage.

3. In a typewriting machine having a paper 25 sudden shocks encountered in usual operation,- the paper strips tend to be displaced both later- 25 ally and in vertical direction with consequent tendency to move on the feed pins laterally-and up and down. It' makes for accurate feeding or line-spacing to have the apertures in the paper strips engage the pins toward their bases or roots and the construction described promotes such engagement notwithstanding the sudden halts and shocks. Furthermore the construction for supporting and guiding the paper through the platen carriage to .the feed pins, being disposed 35 laterally of the pin feed mechanism and its dr'iving devices, has a counterbalancing eflectrelative to the weight of the feed mechanism at one side only of the paper,and it lessens the tendency otherwise of the carriage to tilt, and thus assures easy shifting in letter spacing directions, and at the same-time provides for the eflicient support and feeding of the strips through the platen carriage. The diflerence in diameter between the apertures and the feed sections of the 45 pins is preferably very small, a tolerance of but one sixty-second of an inch being very practical.

Notwithstanding this small or no difference in relative'diameter, the pins register accurately with the apertures and there is practically no 50 injury to the strips or the margins of. the-apertures, eit he'r during the acts of engaging of-disengaging. The pins may be spaced apart on the pin-guiding. chain the same as are the apertures inwthe paper strip, as illustrated.

- 56 Having described myflnvention, what I claim as new and desire .to secure by Letters Patent is:

1'. In atypewriting machine having a longitudinally shiftable'paper carriage and a platen mounted on saidcarriage-to shift therewith for P letter spacing-paper feeding mechanism independen't'of contact with the platen and'located 1 to one fside thereof, comprising a series of feed I "pins'adapted to enter and feed the paper, means,

05 including a fieiible'member on whichsaid pins are mounted andsupports for said member cooperable to move said member and pins and to cause said pins to enter-and feed the paper, the strip-engaging-and-feeding sections of the re- 0 spective pins being disposed in a plane inside the pitch line of the flexible member, a plurality of said pins having simultaneous engagement with a plurality of feed apertures of said paper to pull the paper from around the platen, and

75 means for mounting said paper feeding mecha- I nism on said carriage for shifting movement therewith. 2. In a typewriting machine having a longitudinally shiftable paper carriage and a platen mounted on said carriage to shift therewith for 5 letter spacing; paper feeding mechanism independent of contact with the platen and located to one side thereof, comprising an endless series of feed pins adapted to enter and feed the paper,

means, including a. flexible member on which said pins are mounted and carrying wheels for said member cooperable to move said member and pins and to cause said pins to enter and feed the paper, the strip-engaging-and-feeding sections of the respective pins being disposed in a plane inside the pitch line of. said flexible member, a plurality of said pins having simultaneous engagement with a plurality of feed apertures of said paper to pullthe paper from-around the platen, and means for mounting said paper feeding mechanism on said carriage for shifting movement therewith, said feed pins, flexible carriage and a platen mounted on said carriage; paper feeding mechanism independent of con'-- I tact' with the platen .and located to one side thereof, comprising an endless series of feedpins,

adapted to enter and feed the paper, means, in-' apertures of said paper to'pull the paper from 40 around the platen, and means for mounting said paper feeding mechanismon said carriage, comprising an end standard and a supporthaving spaced brackets between which flts said standard and a transverse part connecting said brackets and having an extensionwhereon travels said flexible member, each of-said brackets having spaced bearings-for the respective shafts of said carrying wheels.

4. In a typewriting machinehaving a paper carriage and a platen mounted on said carriage; said carriage being mounted for. longitudinal shifting movement to effect letter spacing; paper feeding mechanism independent of contact with g the platen and located to one side thereof, comprising an endless series of pins adapted to enter and feed the paper, means, inclfiding an endless flexible member on which said pins are mounted and carrying wheels for said member cooperable to move said member and pins and to cause said so J pins to enter and feed the paper, the strip-engaging-and-feeding sections of the respective pins'being disposed in a plane inside the pitch line of said flexible member, a plurality] of said pins having simultaneous engagement with a' plurality of feed apertures of said paper to pull the paper from around the platen, and supporting devices for mounting said paper feeding mechanism on said carriage for shifting movement therewith and comprising a member whereon travels said flexible member and aslotted guide and retaining device overlying said member with the slot thereof engaged by certain of said pins, said device being. also -lo'eated in a plane inside said pitch line of said flexible member.

' 5. In a typewriting machine having a longitudinally shiftable carriage and aplaten mounted on said carriage to shift therewith; paper feeds ing mechanism comprising a series of feed pins adapted to enter and feed the paper, means, including a flexible member on which said pins are mounted and supports for said member cooperable to move said member and pins and to cause said pins to enter and feed the paper, and means for mounting said paper feeding mechanism on said carriage comprising an end standard and a device having spaced brackets between which fits said standard and a transverse part connecting said brackets and having an extension whereon travels said flexible member, each of said brackets having spaced bearings for said supports.

, 6. In a typewriting machine having a longitudinally shiftable carriage and a platen mounted on said carriage to shift therewith; paper feeding mechanism comprising a series of feed pins adapted to enter and feed the paper, means, in.- cluding a flexible member on which said pins are mounted and rotary supports for said flexible member cooperable to cause said pins to enter and feed the paper, and means for mounting said paper feeding mechanism on said shiftable carfeeding mechanism comprising a. series of feed pins adapted to enter and feed the paper, means, including a flexible member on which said pins are mounted and supports for said member cooperable to move said member and pins and to cause said pins to enter and feed the paper, and means for mounting said paper feeding mechanism on said carriage comprising an end standard and a device connected thereto and having spaced brackets between which fits said standard and a transverse part connecting said brackets and having an extension whereon travels said flexible member, each'of said brackets having spaced bearings for said supports, and a spring impelled slotted guide and retaining device'overlying said flexible member with the slot thereof engaged by certain of said pins, said device hav ing an integral stop to limit its movement to operative position and being adjustable to inoperative position against the tension of its spring.

8. In a typewriting machine having a longitudinally shiftable carriage and a platen mounted on said carriage to shift therewith; paper feeding mechanism comprising a series of feed pins adapted to enter and feed the paper, means, including a flexible member on which said pins are mounted and supports for said member coperable to move said member and pins and to.

whereon travels said fiexiblemember, each of said brackets having spaced bearings for said supports, paper guides spaced laterally from said paper feeding mechanism, and means for mounting said paper guides on said carriage comprising an end standard opposite said first named standard and cross rods connecting said standards and engaged by said paper guides.

9. In a typewriting machine having a longitudinally shiftable carriage and a platen mounted on said carriage to shift therewith; paper feeding mechanism comprising a series of feed pins adapted to enter and feed the paper, means, including a flexible member on which said pins are mounted and supports for said. member cooperable to move said member and pins and to cause said pins to enter and feed the paper, and means for mounting said paper feeding mechanism on said carriage comprising an end standard and a device on said standard having an extension whereon travels said flexible member, paper guides spaced laterally from said paper feeding mechanism and having lateral flanges engageable with the edge portions of the paper and means on said flanges to hold the paper down to said guides, and means for mounting said paper guides on said carriage comprising an end standard opposite said first named standard and cross rods connecting said standards, an engaged by said paper guides. I

10. In a typewriting machine having a longi-.

carriage comprising an end standard and a device on said standard having an extension whereon travels said flexible member, paper guides spaced below and laterally of said paper feeding mechanism, means for mounting said paper guides on said carriage comprising an end standard opposite said flrst named standard and lower cross rods connecting said standards and engaged by said paper guides, and an upper cross rod conmeeting said standards spaced re'arwardly of the paper feeding mechanism and adapted to support paper fed'out of the machine.

11. In a typewriting machine, the combination of a platen carriage movably mounted for letter spacing, a rigid skeleton frame, having standards attached to and supported by said carriage and movable therewith and spaced apart lengthwise of the platen and rods connecting said standards and bracing them in position and providing an open passageway in the carriage and past said rods for feed movement of the paper strips around the platen, strip feeding mechanism, comprising a series of strip feeding pins, mounted on one of said standards and movable in an elongated path between said standards for feeding the strips, and a strip supporting plate carried by said rods. r

In a typewriting machine, the combination of a platen carriage movably mounted for letter spacing, a rigid skeleton frame, having standards attached to and supported by. said carriage and movable therewith and positioned in rear of the platen and spaced apart lengthwise of the platen and rods connecting said standards in rear of the platen and bracing them inposition and proin an elongated path between said standards and in front of said rods for feeding the strips and a strip supporting plate carried by said'rods.

13. In a typewriting machine, the combination of a platen carriage movabiy mounted for letter 1 spacing; a rigid'skeleton frame, having standards attached to and supported by said carriage and movable therewith and positioned in the rear of the platen and spaced apart lengthwise of the platen and rods connecting said standards in rear of the platen and bracing them in position and providing an open passageway in the carriage and past said rods for feed movement of the paper strips around the platen, stripfeeding mechanism, comprising a series of strip feeding pins, mounted on one of said standards and movable in an elongated path between said standards and in front of said rods for feeding the strips and a plurality of curved, strip supporting plates car ried by and adjustable relatively to each other along saidrods, one or more of said strips supporting plates having a flange for cooperating with the edges of the strips to guide the strips.

14. In a typewriting machine, the combination 7 plate to said second standard, a series of strip feeding pins, and means independent of the detachable connection between said extending plate and said first mentioned standard, for mounting said series of pins on the latter standard for feeding the strip. a

' 15. In a typewriting machine, the combination of a platen carriage, a standard rigidly and detachably affixed to said carriage, a plate detachably fixed to said standard and extending from said standard, a second standard detachably and rigidly afiixed to said carriage at a point spaced from said flrst mentioned standard, standardbracing means including a brace rod connecting said extending plate to said second standard, a series of strip feeding pins, means, independent of the detachable connection between said extending plate and said first mentioned standard, for mounting said series of pins on the latter standard for feeding the strip, and strip supporting means, including a plurality of curved plates longitudinally adjustable to different positions on 'said standard bracing means.

16. In a typewriting machine, the combination of a platen carriage, a standard rigidly connected to said carriage, bearing blocks one at each of opposite sides of said standard, parallel shafts each bearing in both said blocks at points spaced apart in direction of feed of the strip, means, in-

cluding a fastener passing through said blocks and standard, cooperable to hold said blocks in stationary position on said standard, and means,

nected .to the machine and :mediate said bearings.

including sprocket wheels on said shafts and an endless pin-guiding chain surrounding one of said blocks and driven by, one of said sprocket wheels, cooperable to feed the strip.

1 In a typewriting machine, the combination of a platen carriage, a standard rigidly connectedto said carriage, bearing blocks one at each of opposite'sides of said standard, parallel shafts each bearing in both said blocks at points spaced apart in direction of feed -'of the strip, means, including a fastener passing through said blocks and standard,;cooperab1e to hold said blocks in stationary position on said standard, means, including sprocket wheels on said shafts and an endless pin-guiding chain surrounding one of said blocks and driven by one of said sprocket wheels, cooperable to feed the strip, a strip retainer device shiftable into and out of retaining position, and means shiftably connecting saidretainer device to the other bearing block.

mechanism, including a series of.feed-pins movable in an endless, elongated path mounted on and shiftable with said standard, and a strip guiding and supporting device, having a part disposedflaterally of said standard and feed mechanism toward the opposite side of said carriage and mounted on said platen carriage, adapted to counterbalance the weight of said standard and strip feed mechanism.

19. In a typewriting machine in combination,

. a longitudinally shiftable paper carriage and a platen mounted thereon for shifting movement therewith, strip feeding mechanism positioned only at one side of the machine and mounted on said carriage and spaced rearwardly of said platen, said feeding mechanism including an endless succession of pins positioned forv feeding engagement only along one longitudinal marginal portion of the strip while the opposite longitudinal margin is free from any feeding mechanism, a flexible supporting member for said pins and mounting the latter so that a plurality of the pins have simultaneous feeding engagement with the strip being fed, said flexible supporting member including pivotally connected rigid links on which said pins are respectively mounted in longitudinally spaced relation, and adjustable paper guiding plates mounted on said shiftable carriage.

20. In a typewriting machine in combination strip feeding mechanism including a traveling flexible feed element and strip engagingfeed pins mounted thereon for feeding the strip, rotary supporting and driving members for said flexible feed element,.short supporting shaftsforsaid supporting members positionedadjacent to one longitudinal edge of the strippath-and terminating at their inner ends short of the opposite longitudinal edge of the strip path, bearings for saidgshafts at spaced parts thereof, and a supporting bracket for said feeding mechanism conpositioned inter-

Images