US1309423A - Planqqraph co - Google Patents

Description

G. A. SEIB.

TYPE WRITING MACHINE.

awucmon msu ocLs. 191s. 4

Patented July 8, 1919.

2 SHEETS-SHEET l- 'run commun PL/mnumwv U1, fummorom D. c.

G. A. SEIB.

TYPE WRITING MACHINE. APPLICATION men ucm, 191s.

Patented July A8, 1919.

2 SHEETS-SHEET 2.

INVENTDR vHIS ATTURNEY UNITED STATES PATENT OFFICE.

GEORGE A. SEIB, OF ILION, NEW YORK, ASSIGNOB. To REMINGTON TYPEWRITER COMPANY, oF ILION, NEW Yoan, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINES Application tiled October 5, 1918.

To all ali/om it may (fonce/m.'

lie it known that I, (nonon A. SEIB, citizen of the `United States, and resident of llion, in the county of Herkimer and State of vNew York, have invented certain new and useful Improvements in Type-lVriting Machines. of which the following is a speciication.

My present invention relates to ribbon mechanism for typewriting machines, and a principal object` is to provide devices for automatically` controlling the ribbon reversing device or weight when the associate ribbon spool is removed from and replaced on its shaft or support. My invention is an improvement ou the construction disclosed in the application of T. I. Fort, Serial No. 256,387 filed October 1. 1918.

To the above and other ends which Will hereinafter appear, my present invention consists in the features of construction, combinations of devices and arrangements of parts to be hereinafter described and particularly pointed out in the claims.

In the accompanying drawings,

Figure 1 is a fragmentary plan view, partly in section. illustrating the ribbon feeding and reversing mechanism of a Remington No. 10 typewriting machine to which l have shown the preferred form of my invention as applied.

Fig. 2 is a sectional view taken axially through one of the ribbon spools and the shaft on which it is supported, illustrating my invention associated therewith.

Fig. 3 is a fragmentary plan View, partly in section, of said ribbon spool, its shaft and associate parts.

Fig. 4 is a perspective view of my novel latehing device.

Fig. 5 is a sectional view taken axially through the ribbon spool and its supporting shaft, and showing the relationship Of the parts when the ribbon is entirely unwound from said spool.

Fig. 6 is a side view of the ribbon spool shaft and associate parts, the parts being shown as they are related when the ribbon spool has been removed.

Fig. 7 is a view corresponding to Fig. 6 but showing the parts as they appear during the operation Of replacing the ribbon spool on its shaft.

Fig. 8 is an end view, on an enlarged scale, of the parts shown in Fig. 6.

Specification of Letters Patent.

Patented July 8, 1919.

Serial No. 258,955;

l `igs. il and 1U are opposite face views of the ribbon spool.

Referring first to Fig. l, the carriage (not shown) is conl'iected to its spring drum 1 by a strap 2. During leftward movements of the carriage the spring drum turns a` bevel gear wheel 3 which intermcs'hes with a corresponding bevel gear wheel 4 that is mounted on a ribbon driving shaft .3 in such a way that the shaft is always caused to turn by the gear wheel 4 but may slide cndn'ise bach and forth indcpelnlently of said gear wheel. Fixed to said shaft near op positc ends arel beveled pinions (i and outside of said pinions the shaft is provided with worms Y. The pinions (i are adapted to mesh alternately with beveled gear Wheels 8 that are fixed to the rear ends of horizontal spool shafts 9. Said shafts 9 bear in stationary lugs 10 and extend toward the front of the machine, carrying at their forward ends ribbon spools 11, each ribbon spool comprising front and rear { ianges 12 and 13 and a hollow core 14 having an opening or slot indicated at 15. the rear flange 13 being cut out as indicated at 1G in registcr with said opening (Figs. 5 and 9). A ribbon 17 is Wound on the spools. the free portion of said ribbon being threaded through a ribbon carrier or vibrator. not shown, which is adapted to be vibrated at the type strokes in the Way common to the No. 10 Remington typewritiug machine` or in any other suitable manner.

Ribbon reversing mechanism is provided by which the shaft 5 may be moved longitudinally back and forth so as to cause the driving pinions 6 to mesh in alternation with their associate gear wheels 8 and thus automatically feed the ribbon back and forth between the spools. Said reversing vmechanism comprises for each ribbon spool a rod 18 which is slidably mounted inside the associate ribbon spool shaft, said rod being passed through a slot 19 in said shaft, the slot stopping short of the rear end of the shaft, leaving the rear portion 19a, which is perforated as indicated at.19h, so that near said rear end the rod 18 has a complete bearing Opening, 19", in the shaft. The front end of the reversing rod 18 is provided with an outwardly extending angular finger 2O that engages in an opening 21 in a Weight device 22 that comprises a Weight proper `23 and an angular shank or stein 24 to which Stl they weight is fixed. The Weight, which is beveled at its end is normally housed within the lrohow core r4 of tito associate' ribbon spool and is adapted to play in' the opening l5 and the cut-out lf3. The rear end portion otl the stem 24 is angularly disposed and is bifurcated providing curved branches 25 to embrace l'oosely the shaft t). The branched portions 25 are curled, as indicated at 2G, to bear on pins 2T that project outward from opposite sides of a collar 28 that is secured by a screw 29 to the shaft. The weight 23 is normally retained within the core 14 by the coils of the ribbon 17 but when the ribbon is completely unwound from the spool the weight will be free to swing out under the influence of gravity to the position shown in Fig. 5. This nioveinent of the Weight operates through tite finger ZO to slide the rod 18 rearward; causing its rear reduced end to project outward from its bearing and into engagement with the associate worin T. After such engagen'ient a slight further turning of the shaft 5 will cause it to he wornied or nioved longitudinally so as to disengage the engaged driving pinion (i from its gear 8. Devices not shown assist the completion of the longitudinal movement of the shaft to canse the other driving pinion 6 to engage With' its gear wheel 8. The result is that one of the ribbon spools is disconnected from the ribbon driving shaft or source of power and the other ribbon spool is connected therewith so that the direction of longitudinal feed of the ribbon will be reversed.

It will be understood of course that in on der to effect a reversal of the ribbon feed and wind the ribbon on and ofi` the spools, each spool is provided with a train of autoY matic reversing devices such as has been described in order to project and withdraw the rods 18 into and from cooperation with their associate worms 7 .so-as to the driving shaft 5' longitudinally back and forth. The manner in whichy the rodlS is projected when its associate Weight Z3 is released by the unwindingof the ribbonpfrorn the spool has-been described, and it will be understood the projeotiedfrod Willbe drawn b'aokwithin its bearing as the ribbon starts to rewind on the bared spoelt Its rst fold or ply jassing over the dropped weight 2B with cree said weight back within tite core of the spoolf,\tiiis backittardswinging of the weight acting. tixrcm'gh` the finger 20 to withdraw or return the rod 18. The weight, in' other words acts through gravity and is prevented tiem dropping out et ai@ Spoor by the ribbon,` saidt weight" normally resting* on the pliesof the' ri'bbonwhich bridgetihe gap 15* in the' cores.

The ribbon spools are detaclirtbiyl su'ppotedyon their shafts 9, the' left-band' spool eilig! heid in platee in #he present instance by a screw El and the right-hand spool by latching devices as is usual in the Remington inaci'i'ine. The spools when in place are forced to turn with theirshafts by locking or engaging devices which will be briefly dev scribed. As clearly appears Yfrom Figs. St and 10, the flanges l2 and 121 of the ribbon spools are centrally perforated, as indicated respectively at 3() and 3i, in order prolierly to fit over the shafts t). The perforation 3l in the rear [fange 13 is a round hole but the opening 3() in the forward flange 12 is provided with diametrically disposed inwardly projecting locking lugs 32. One of these lugs is adapted to fit between the walls at the forward end of the slot-way 19 while the opposite ing is adapted to engage with a notch 33 cut in the forward end of the, shaft it (Figs. 2 and 5), the construction being `such that when thel ribbon `spool is in place it will he foret-.d to turn with itsl shaft. liatehing devices4 may he employed for each `spool to insure the retention of the spool on it` shaft` but in the present instance are used only in connection with tin` right hand spool. Said devices comprise, as best shown in Figs. 2, 3 and 5, a latch proper 34 which is arranged within the slot 19 at the forward end of the shaft 9 and is pivoted on a pin 35 which bridges said slot. (lne arin of the latch 34 is provided with a finger piece 3G which projects .forward beyond the end of the shaft and the face of the ribbon spool, while its rear arni is provided with a locking nose 37 which cooperates with the inner wall oi' the flange 13. This locking nose is nornially controlled by a coiled. spring 3S which is arranged within the slot 19 and confined between the latch 31 and the bottoni wall of said slot.. This spring tends eonstantly to press the nose 3T of the latch outward into locking engagement, as shown in Fig. 5, wherein the latbh is in effective or locking position. In order to unlatch the spool preliminary to withdrm'val it is necessary' to press on' the finger piece 36 so as to overcome the spring and force the nose back into the slotway 19.

ln order to control the weight 23 and prevent it from dropping away from the spool shaft when the spool is removed, as may be necessary from time to tinte, I pro* vide novel latchling devices whiy h tonie into use automatically at such times. in the' Remington machine it is customary when it is desired to renew a ribbon to wind the ribbon on the right-hand spool, leaving the lefthand` spool bare, so that it is only necessary to remove the right-hand spool and replace' it withi a fresh4 ribbon spool. If the spool to be' removed is full, as is u'siflai', or partly fail, my invention provides for retaining the weight 23 after the spool has been*movedfinsubstantialiy the same posi-` tion as tlie weight oce'pies when the spool Htl tltt

is in place and the weight is sustained by the ribbon. If, however, it is necessary or desirable to remove an empty spool, or one on which there are only one or two plies of ribbon, conditions which result in the weight 23 occupying a position different from the normal position as the result of having swung down or away from the shaft either to the full extent of movemeul or part way. then when the spool is removed my invenlion provides for picking up or acting ou the weight or reversing device automatirally and restoring it to its normal position close, to the spool shaft. These funi-tionsl will he more clearly understood from the detailed description of my automatic latching de vices which follows. Said devices are cheap and simple in construction comprising only two parts. one a coiled spring' and the other a sheet metal piece, which parts may be readily applied to existing emistructions without changing or altering the latter. The latch proper, indicated as a whole b v the, immoral 3f). is shown detarhed in Fig. 4. Preferably it may be made of .sheet mel-.d and cut out and bent to the shape shown. lt comprises a triangular body portion 4()r` and a portion 41 bent at right angles thereto. The portion 41 is provided at its sides with forwardly bent ears, lugs or eontaet derives 42 and is formed with a round hole 4? to fit loosely over the shaft 9. The bod).v portion 40 is formed with a triangular hole or opening indicated at 44 which at the rear terminates in a narrow slotway, indicated at 45, and at the front extends down into a notch or cut-out. indicated at 46, formed in the portion 41, the hole 44 being continuous and including slot 45 and notch 4G. This angular member or latch is arranged looselyY on the forward end portion of the associate shaft 9 between and externally of the collar 28 and the nose 37 of the latch 34, the narrow slotted rear end being disposed between the bifurcations or branches 25, there being of course one latch 39 for each shaft 9. T he slot 45 is engaged loosely by the finger 20, while the weight 23 or the portion of the stem to which it is immediately attached, is adapted to be housed or seated loosely within the notch 46 and the wider part of the slot 44.y thus affording a comparatively close approach of the weight 23 to the shaft 9. Surrounding the shaft 9 and confined between the collar 28 and the part 41 is a coiled spring 47 which is the second part or piece of my novel weight controlling mechanism. This spring tends constantly to press the latch 39 forward along the shaft, and when the spool is in place thereon maintains the contact lugs 4Q in contart with the flange 13 of the ribbon spool, as shown in Figs. 1 to 5. lVhen the ribbon spool is removed the spring 47 forces the loosely hung latch still farther forward until it is arrested by the cngagement of the, part 4l with the nose CET. This represents the eXtreme limi( of forA ward movement o'll the latch and al ibis time the, rear end of the slot l5 in lhe slolted shank portion of the latch is engaged wilh the, laterally exlending linge.1".l),:ind through lhe force ol' the. lspring li is holding seifl vlinger pressed forward, causing it. through its action on the weight 23. to hold .said weight elose to the shaft 9, as shown in `said Fig, 6. In other words, at this stage. or when the ribbon spool is olf. the latch il is elie tive to hold the weight il?) subslantinlly in its normal posilion close to the ribbon `spool shaft. Suppose now the operator starls to put the ribbon spool on the shaft. as illustrated in Fig. i. the weighl. being held up autoniatieally by the spring lnteh ll. e'ill pass readily iu'lo the opening ll) alnne lhe ribbon plies. As lhereaftei' the spool is pushed farlher bark the flange li. roulart ing with the lugs 42. will i'oree the heb Id) rearward on lhe shaft El. overcoming' lhe spring 47 and freeing the linger .fll from l'he control of said latch. so that when the 1-pool has been pushed bin-li into place and hitched. the finger will be entirely free so thai the weight will be completely restored to ihe control of the ribbon alone, the latch bl being held in ineffective position.y as shown in Figs. 1 to 5, by the ribbon spool itself. ivhen, however, the ribbon spool is removed the spring 47 will again forro the latch 'l`or ward so that it will resume eontrol ol' the weight and hold it up through the action of the rear end of the slot 45 on the iinger '2.0. My invention is preferably applied to both ribbon spool shafts.

It will thus be ,seen that l have provided a simple, inexpensive and cifra-tire eoutrolling means for the ribbon reversing weight which relieves the operator of manipulating the weight b v hand when putting the ribbon spools on their shafts. The stamped sheet metal latch device comprising a perforated bearing plaie or pari and an olli-set slotted shank or member spaced away from the spool shaft on which the hearing plate is mounted and also being exterior or outside of the spring whiih presses it, is readily applied to the machine without necessitating ehangcs in the latter.

Various changes may be made without departing from my invention.

What I claim as new and desire to secure by Letters Patent, is:

1. In a typewriting machine, the combination of a ribbon carrier, a shaft on which said carrier is detachably mounted, reversing mechanism including a device controlled by said carrier, and means for preventing said reversing device from affecting said reversing mechanism when the ribbon carrier is detached, said means comprising a stamped sheet metal piece mounted on Sir] lll)

Itl

4` www said lshal't and .1 springr operative on .said piece.

2. In a typewriting machine, the combination ol' a ribbon carrier; a shaft on which said carrier is detacliabl)r mounted; reversing nleehauism including a weight and a collar tixed on said shalt aud to which said weight is pivotally comuarted; and means lor preventingl said weight from affecting said reversing mechanism when the ribbon carrier is detached, said means comprising an angular plate mounted externallyv of said collar and a spring cti'ect'ive on said plate.

2t. In a typewriting machine, the combination of a ribbon carrier; a shaft on which said carrier is detachablT mounted; reversing meclninism comprising a weight: connerteil to a bilurcated stem, and a collar lxed to said shaft and pai-tlv embraced by the bifurcations of .said stem, said stem bciupV pivoted to said collar, and means for preventing said weight trom ati'ecting said reversing mechanism when the ribbon carrier is detached. said mealn-y comprising a plate z-llidablj,4 mounted on said shaft aud having a slotted portion extending externally of said collar between said bifurcations.

-l. ln a typewriting machine, the combination of a ribbon carrier; a shaft on which said carrier is detachably mounted; reversing mechanism comprising a Weight con nected to a bifurcated stern, a collar fixed to said shaft and partly embraced by the bifurcations of said stem, said stem being pivoted to said collar, and a reversing rod having a loose connection with said stem; and means for preventing said weight from affecting said reversing mechanism when the ribbon carrier is detached, said means comprising a plate slidably mounted on said shaft and having a slotted portion extending externally of said collar between said bifurcations, said slotted ortion coperating with a part of said ro the slot in said plate having an extended portion adapted to accommodate said weight.

5. In a ribbon reversing mechanism, the combination of a spool shaft; a sprinactuated latch connected to the reversing evices and slidably supported on the shaft and comprising a bearing portion and an odset slotted shank; a spool on said shaft against which said latch presses; and a catch for holding the spool 1n normal position and also for limiting the outward movement of the latch when the spool is detached.

(S. In a ribbon reversing mechanism', the combination of a spool shattt; a spring actuated latch connected to the reversing devices from said shaft and that embraces said finger and having also a bearing portion .slidable ou said shaft, a pivoted Weight connected to said laterally extendingiinger, and a detachable spool mounted upon said shaft.

H. lu a ribbon reversing mechanism, the combination oll a spool shaft; a reversing roll therein haring a finger extending laterally outside llul shalt: a pivoted weight (-ounei-ted to said finger: n latch mounted ou .said shaft aud comprisillg au olf-set shank extending parallel with said shaft: a (letarhable spool, and a spring for pressing said latch against said spool.

i). In a ribbon reversing mechanism, the combination of a spool shaft; a reversing rod therein having a finger extending laterally outside the shaft; a pivoted Weight connected to said finger; a sheet metal latch mounted on said shaft and comprising a i'ierforated bearing plate and an ott-set slotted shank extending parallel with said shaft; a detachable spool', and a spring for pressing said latch against said spool.

t0. ln a ribbon reversing mechanism or the character described, a sheetmetal spring pressed Weight holding lateh consisting of a slotted shank, a bearing portion, and projections or ears extending forwardly from the latch.

11. In a ribbon reversing mechanism, the combination of a Spool shaft, a reversing Weight supported thereon, a sliding pin to which said Weight is connected, a coiled spring on said shaft, a latch slidably spported on said shaft and having a member external to said shaft and to said spring operatively connected to said sliding pin, and a detachable spool on said shaft.

Signed at Ilion, in the county of Herkimer, and State of New York this 30th day of September A. D. 1918.

GEORGE A. SEIB.

Witnesses:

Mrs. LENA SPAWN, LINNIE F. BUnNn'rr.

Copies df this patent may b'e obtained for Eve cents eatin, by addressing the Commissioner o! atents,

wssilin'gton, n. 0.

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