US1712193A - Typewriting machine - Google Patents

Description

"May 7,- 1929.

TYPEWRITI-NG MACHINE 7 Filed Jan. 27, 1927 \WITNESEES v QQ Z Y INVENTOR ATTORNEY E. E. BARNEY 1, 1 3

Patented May 7, 1929?.

UNITED stares v v 1,712,193 earsnr OFFICE.

EoWIN E. BARNEY, on NEW ROCHELLE, NEW YoaK, ASSIGNOR'TQ REMINGTON TYPE- WRITER COMPANY, or ILION, NEW YORK, A oonronarroNor' NEW YORK.

TyPEwnrrINe MACHINE.

Application filed Januaiy 27, 1927. seriaiNo. 163,988.

My invention relates to ribbon mechanism for typewriting machines and has for its main purpose the provision of means for controlling the ribbon spools in relation to their supports and for improvin'gcertain of the devices associated with said spools. V

T he invention was particularly designed as an improvement on the ribbon mechanism of the Remington Portable typewriting ma chine, but its principles may readily be adapted to other styles of writing machines. In

said Remington Portable machine the ribbon spools are horizontally disposed being mounted on vertical. pins or spindles, the ribbon be ing adapted to be fed from one spool to the other by mechanism for turning the spools. Associated with the ribbon feeding mechanism isribbon reversing mechanism whereby the direction of ribbon feed may be reversed, saidreversing mechanism comprising a pair of so-called pivoted trailers or followers,

each follower having a portion cooperative,

with the plies of ribbon wound on its spool in such a way that when the ribbon on one spool has been exhausted the associate follower is moved to a position where its actuating pin will become effective to move the ribbon drivshaft longitudinally to change gears and disconnect the associate spool, at the same time connecting the other spool with the driving shaft all in a manner well understood. Troublehas heretofore arisen from the enga ement oft-he follower with the ribbon plies during a removal and a, replacement of the spool from its support and my present invention has for one of its objects to avoid such trouble, this being done by providing the follower with a special finger-piece which in the present instance serves several purposes.v In

the first place the fingenpiece, being disposed I so as normally to directly overlie the associate spool, Wlll prevent an upward movement of displacement of the spoolunder normal I conditions, it being necessary to swing the handle and with it the followerto a position outside of the spool before the latter can be I removed. Likewise in replacing the spool it will be necessary to swing the finger-piece out of the way and with it, of course, the follower in order to clear the path for the spool. The finger-piece further serves as a pointer or visual indicator for the follower.

I To the above and other ends which will hereinafter appear, my invention consists in the features of construction, combinations of showing a ribbon spool, its mounting and associate parts. i Fig. 2 is a perspective view showing one of my improved ribboncontrolling member or follower devices. Fig. 3 is a fragmentary plan view the ribbon spools and the ribbon feeding and reversing mechanism. I

Fig. 4 is a perspective View of a detachable. support for the ribbon controlling member or follower. i Fig. 5 is a side view of a ribbonspool show. ing the ribbon attaching devices applied thereto; and v v Fig. 6 is a perspective view ofv a ribbon attaching device. I

The Remington Portable typewriting machine to which my invention is shown asapplied is provided with a key-controlledshiftable frame which comprises side plates or portions, the left-hand side plate only being shown herein (Fig. 1) and designated by the n'tuneral 1. Integral with the side plate 1 isan angularly bent-0E portion or car 2 which showing 1 provides a support for a cylindrical bearing,

member or block3 from-which rises a poster bloclr 3 and rotatable on the pin 4 is a circular plate 5 rigid w th which is a crown gear" wheel 6, the wheel being disposed below the plate 5 andi'ts teeth being adapted to mesh adapt'edto be rotated automatically when the printing keys are actuated, the means for turningv the shaft comprising a ratchet wheel 9 fixed thereto at about its middle as. shown .bearing5pin4. Supported on the cylindrical i forth endwise for this purpose. Theshaft 8 is g in Fig. 3. Cooperative withthe ratchet wheel is a driving pawl 10 actuated from the printing keys and a holding pawl 11. The shaft 8 may be moved endwise by hand and is also rotatable by hand, knurled finger buttons ,12 7

being secured at the opposite ends of said shaft for these purposes. Integralwith the finger buttons 12 are double cam members 13 which are comprised in the ribbon reversing mechanism. The pawls 10 and 11 are of sufficient width to cooperate with the ratchet wheel 9 in bothpositions to which it may be shifted when the shaft 8 is moved cndwise.

Each of the circular plates 5 provides a support for a detachable ribbon spool or rotary carrier, said spool as best shown in 1g. 5 comprising essentially a core or hub portion 14; and parallel circular heads or flanges 15 secured at opposite ends of the core or'hub. The core is formed with a circular bore to fit over the associate pin or bearing post 4. 7 Projecting downward from the lower flange are two diametrically opposite lugs or tits 16 .which are adapted to engage in a slot ordepression formed in the underlying plate 5, thereby connecting the spool with the plate so that'when the plate and its gear 6 are rotated the spool or ribbon carrier will'likewise be rotated, the pin 4 providing a support and bearing for the spool.

The ribbon .1? is attached at its opposite 7 ends to the ribbon spools 14, 15 and is adapted to be wound on said spools alternately. There is provided preferably an improved and simplified means of attaching the ribbon at its end portions to the spool cores. Said means comprises spring clips one of which is, shown detached in Fig. 6 and numbered18. The clip is made of a single piece of sheet metal bent or formed in the arc of the'circle and of such size as to fitover and embrace the core piece 14 between the spool flanges 15. The clip fits somewhat morethan halfway around the core-so that when it has f beensprunglnto place thereon it will 'engage or clip the core by reason oflits inherent friction and some force isnecessary to detach 1t, thereby guardingag'ainst accidental displacement. Preferably a point or arrow 191's struck out of the body of the clip and bentso as to stand slightly away there-- from. This point or arrow is thrust through the end portion of the ribbon, thereby attaching it to the clip so that when the clip is applied to the core the ribbon is thereby attachedto the ribbon spool and when the spool is turned the ribbon will be wound on the core piece between the spool flanges or heads.

' It will be understood that when the print- .ing keys are actuated their motion will be be engaged with its associate gear wheel 6, so that the turning movement of the shaft is transmitted to the engaged gear wheel and circular plate 5, and thence to the ribbon spool mounted on said plate, the spool being turned 7 stroke, but these mechanisms are of the usual construction found in the Remington Portable typewriter.

ri Y ihe ribbon reversing mechanism in addition to the double cam members 13 comprises dev ces cooperating with said members to shift the driving shaft 8 automatically back and forth as the ribbon spools'are alternately emptied and filled. The cooperating devices aforesaid are in the form of ribbon controlling members each designated as a whole by the reference numeral 20. As clear ly shown iii-Fig. 2', the member 20 1s prefer ably formed of a single piece of sheet metal bent to the required shape. Said member comprises three horizontally disposed portions 21, 22 and 23 connected by vertical portions 24 and 25. Bent off from thecross portion 22 is an angular part or arm 26 terminating in a vertical extension 27, tlie parts 26, 27 con stituting a socalled trailei"- or follower proper that is adapted to contact directlywith the plies of ribbon wound on the associate ribbon spool and bearing inwardly against the outermost ply. Suitably secured to the upright portion 25 is a horizontal pointed pin 28 which is adapted to cooperate directly with the associate double cam 13.

As thus far described the ribbon controllinginember or follower 20 generally resembles the one 'l'ieretofore employed. In order-to carry out the purposes of the inventionthorc has been added a special finger piece or handle 29 which projects horizontally from the up perinost horizontal portion 21 and is sub-' 7 stantially parallel with the arm 26.

. The three parallel horizontal portions 22 and 23 are formed with round bearing openings 30 in registerwith each other,

whereby the follower is adapted to lit on an upright post or pin 31 having a head and fitted into and secured at its foot in an angu lar bracket as most clearly shown inlFig.

4. The bracket 33 is provided with an angu- 1 K iar upright extension 54: which is formed with a hole 35 to receive the shaft 8. The fol lower 20 issccured in place on the bearing post or pin 31 before'said pin is assembled with the bracket 33, so that the bracket and follower are detachable from and replaceable on the machine together. The head 32 prevents upward displacement of thefollower while allowing it to turn freely on the pin. The base or foot portion of the bracket 33 is formed with elongated holes or slots indicated at 36, which slots receive headed screws 37 threaded into the associate ear or shelflike part 2, whereby the bracket is adjustably secured to said ear. A coiled draw spring 38 is connected at one end to the upright portion 25 of the follower, said spring at its opposite end being hooked through .a holein the upright portion 8 1; of the bracket. The spring tends constantly to hold the follower head or conta t 27 in contact with the ribbon plies wound on the associate spool. T he part 29'of the follower overlies the upper flange 15 of the associate spool, under all normal conditions, and is so disposed vertically that while out of immediate contact with said flange, it will nevertheless be engaged by the flange on a very slight upward movement of the spool along its support or spindle i. This will be clearly understood from a consideration of Figs. 1 and From these views it will be apparent that not only will the part 29 prevent upward displace ment of the spool but it also acts as a visual.

indicator of the posit-ion of the follower and especially of the relationship of the follower head with the spool axis and flanges. As is well understood, the spring pressed follower swings in on its axis or pivot :31 as the quantity or number of plies of ribbon wound on the s eel lessens, the result of this pivotal swinging icing that the pin or actuator 28 is brought nearer and nearer to'the path of nioven'ient of the associate cam member 13. The parts are so related that when the end portion of the ribbon is reached the actuating pin 28 will engage with the associate'cam an 'as a result will as therotary n'iovement of he shaft- 8 continues force said shaft to move also longitudinally. Completion of the cndwise movement is achieved as is well understood and effects an engagement of the underlying driving pinion 7 with the associate gear wheel 6, the result being that the pay-off or idle spool will be connected with the driving mechanism to be positively driven in reversed direction-when the printing keys are actuated so as to wind the ribbon thereon. Fig. 3 shows the position of the partsimmediatcly after the shaft 8 has been shifted cndwise from left to right, thus disconnecting from the left-hand spool and connecting with the right-hand spool.

it will be understood that the device or part 29 must be swung outward in order to of the spoolso that said spool is free to be lifted from the machine. Lik wise will be apparent that, with the spool off, it will be impossible to reapply it to its post or bearing, or to apply a new spool thereto, without first swinging the part 29 out of the way of the spool flange, this movement, of course, also swinging the follower 26, 27 itself out of the way. In other words, the part 29 will operatc to safeguard the follower so that it will be impossible, as sometimes has happened heretofore particularly when a one-flange spool was employed, to improperly engage with theribbon plies or to be distorted or bent out of place by the ribbon plies or by the spool itself should undue force be used by the operator. It will be appreciated that distortion of the follower results in improper timing of or disablement of the ribbon reversingmechanism, and that it is consequently of primary importance to prevent such distortion. Such prevention is a result which i the present invention achieves. It will be seen then that the invention provides means which is most conveniently located for serving as a handle to manipulate oradjust the follower 20 and which further serve'sas a safeguarding device to prevent improper handling of the'spool and fouling of the followcr, as well as serving to indicate to the eye the position of the follower device.

The downward extension 21. may also be used as a finger-piece for the follower, if desired. I

Various changes may be made without departing from my invention.

What I claim as new and desire to secure by Letters Patent, is v 1. 111 a typewriting machine,'the combination of a ribbon spool, a support which detachably receivessaidribbon spool, a ribbon I 'to render said means ineffective.

3. In a typewriting nachine, the combination of a ribbon spool, a support therefor, a ribbon controlling member directly engaging the ribbonon the spool, and a visual indica-, tor rigid with said member and overlying the spool, said indicator showing. when said 'member is in and out of working position.

4. In a typewriting machine, the combination of a ribbon spool, a support therefor, a, ribbon controlling member directly engaging the ribbon on the spool, and a visual indicator rigid with said. member and showing the position of said member, said indicator overlying said spool and also serving as a finger. piece for manipulating said member.

5. In a typewriting machine, the combina tion of a rotary ribbon carrier, a support on which the carrier is adapted to rotate, a ribbon controlling member cooperative directly with the ribbon on said carrier, and a visual indicator rigid with said member and overlying said carrier, said indicator indicating the relationship of said member ribbon. V 6.v In a typewriting machine, the combination of a horizontally disposed ribbon spool, a verticalspindle therefor, ribbon mechanism including a ribbon controlling member cooperative with the ribbon on said spool, and a visual indicator adapted to overlie said spool and indicate the relationship of said member with the ribbon on said spool, said indicator also serving to preventthe spool from being lifted from its support and from being replaced on its supportwhen said member is 'in working position, said indicator being movable at will without disturbing the ribbon mechanism as a whole to allow the spool to be removed.

7. In a typewriting machine, the combina tion of a horizontally disposed ribbon spool, a vertical support therefor, a pivoted ribboncontrolling member cooperative with the rib bon on said spool, and a finger piece on said member effective to swing it into and out of working position, said finger piece being adapted'to overlie said spool to prevent its being lifted on said support.

8.' In a typewriting machine, the combina tion of a ribbon spool comprising a core piece and parallel flanges, ribbon reversing devices comprising a pivotedmember providing apart disposed within said flanges and adapted constantly to contact directly with the ribbon Wound on said core piece, said pivwith the 1 oted member being also provided with a finger piece for moving it into and out of working position, said finger piece lying outside of and being adapted to contact with a flange thereof, said finger piece serving as a visual indicator to show the relationship of said part to the spool core and also serving as a preventive means for preventing displacement of the spool on its support. 7

9. In a typewriting machine, the combination of a pair of ribbon spools each comprising a core and parallel flanges, pins onwhich said spools are rotatable, ribbon feeding devices, ribbon reversing devices comprising a pair of pivoted followers adapted to co -oper ate with the plies of ribbon'wound on the spools between their flanges, and finger pieces formanipulating said followers, said finger pieces overlying said spools, preventing their being lifted on their pins and also preventing their being applied to saidpins' except when their associate followers are out of working positions.

10. 111 a typewriting machine, the combination of a. ribbon spool comprising a. core and parallel flanges, a support on which said spool is detachably mounted, ribbon reversing mechanism "comprising a device. having a follower arm disposed between the two flanges and coo 'ierative with the ribbon wound on said spool core, and a finger piece tion, said finger piece, being substantially 'iarallel. with said follower arm and indicating the position thereof.

Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York, this 26th day of January, A. D. 1927. i EDWIN E. BARNEY.

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