US532211A - Op same place - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

O. K. NICHOLS. TYPE WRITING MAGHINB.

No. 532,211. Patented Jan. 8, 1895.

(No Model.) 3 SheetS-Sheet 2.

' O. K. NICHOLS.

TYPE WRITING MACHINE.

No. 532,211. Patented Jan. 8, 1895.

' 'UNITED STATES PATENT OFFICE.

CHARLES K. NICHOLS, OF CHICAGO, ILLINOIS, AS SIGNOR TO JOHN SPENCER. i OF SAME PLACE.

TYPE-WRITING MACHINE.

SlPEGIFICATION formingpart of Letters Patent No. 532,211, dated J anuary 8, 189 5.

Application filed December 26,1893- Serial No. 49 ,704. (No model.)

i To all whom itmay concern:

Be it known that 1, CHARLES K. NICHOLS, a

citizen of the United States, residing atOhicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Type-\Vritiug Machines,

of which the following is a specification.

In a type-writing machine characterized by my invention, the ribbon-guide is normally depressed so as to expose the line, and is movable from such normal position so as tobring the ribbon in co-operative relationship with the impression'devices. The ribbon-guide is operated from the key-levers, and in .order to adapt it for machines in which variable actions are derived from the depressions of the keys so as to produce variable extents of rotation on the part of a type-wheel. or segment, the ribbon-guide is operated by a cam movement timed to maintain the same in a determinate position with relation to the impression devices, as long as may be necessary for making the impression, and regardless of the extent to which the cam-movement may be operated. In this way, regardless of the'variable actions resulting from the depressions of the keys, the ribbon will at each stroke on impulse, be brought into a determinate or uniform position relatively to the printing devices. As a means for raising the ribbonguide from its normally depressed position, it is raised by the action of a movable member of the machine against an incline comprised in said cam-movement, the arrangement being such that when the incline is raised, a rise on the part of the ribbon-guide will take place.

Various detailsconstituting ma .ters of further improvement are hereinafter oet forth.

In the accompanying drawings-Figure 1 is a top plan view of a portion of a type-writing machine embodying my invention. Fig. 2 is a section on line :r-a: in. Fig.1. Fig. 3 is a top plan of the ribbon-guide. Fig. 4 is a section' taken transversely through the ribbongu-ide and cam plate in rear of the papersliield. Fig; 5 shows the paper-shield detech-ed. Fig. 6 shows theupper end of one of the vibratory lovers with the adjustable plate thereon. Fig. 7 is a top plan view of the camplate. Fig. 8 is a view similar to Fig. 2 but islmv'ving the cam-incline directly on the ribbon-guide. Fig. 9 is a sectional detail generally similar to Fig. 8 but showing another arrangement of cam lifting action. P

In the construction of machine illustrated in said drawings, the paper-feeding rolls A and-B are understood to besuitably mounted uponthe carriage of atype-writing machine,

' and to be suitably operated when it becomes desirable to-feed upwardlythe paper 1. The ribbon-spools O are arranged to turn about vertical axes, and to such end are secured v.upon vertical spindles 2 which are understood to be operated by any-ordinary orsuitable step-by-step movement for the purpose of 6 5 feeding forward the ribbon D, as usual.

The rotary, reciprocating type-segments F,

can be operated as in the Hammond ma chine or any other suitable way, and hence are simply illustratedindotted lines, it being deemed a suflicient explanation of such de-- vices to state that when an impression is to be made, one or the other of these segments is swungin front'of the ribbonto an extent to bring the required character thereon in front of the ribbon and in (so-operative relationship with a vibratory platen or hammer G;

The strip H, illustrated, is a flexible pad strip which is carried by the carriage andarranged. to back the paper. The platen or 8 I hammer is arranged in rearof the pad-strip, so that when a blow is struck, the ribbon, paper and pad-strip will be compacted between the hammer'and type.

The ribbon-guide I, is adapted for both guiding and raising and loweging the portion of the ribbon,which extends between the spools. Thisribbomguide is normally lowered so as to normally expose and indicate the line, and is raised with the action of each 0 of the several key-levers K so as to bring the .ribbon in cooperative relationship with the type. The ribbon-guide normally rests upon the front feed-roll B, and to such end it is preferably formed with portions 3 which are '9 5 curved in conformity with the roll. This ar rangement also permits the ribbon-guide'to uniformly repose in a defined ortrue position,

so that when it is raised it will always rise from such position and thus facilitate true we or aceurate action. In order toinsure the drop or depression of the ribbon-guide, it is subject to spring action, and as a simple and efiicient-arrangement, it .isprovided with spring-arms 4: which are secured at their ends 5 upon the main-frame of the machine. With such arrangement the ribbon-guide, is attached to the main-frame of the machine by spring lever arms which oppose the rise of the guide with an elastic resistance. In or- I der to lengthen theleverage between the free end of the guide which engages the ribbon, and the points whereat it is held upon the main-frame, its arms should have the greatest resilience near the said points. This can be attained in any suitable way, for example,

bycontracting the arms in width as at points 6 (Fig. '3). While therefore the rise and fall of the ribbon-guide will, strictly considered, bea vibratorymovement, its free end portion will vibrate in the arc of a circle so large as to render themovement of such portion of the guide, proximately in a vertical plane. The ribbon-guide is also adjustably held upon the main-frame so that it can be set with all desired accuracy, and to such end 'its spring arms are secured by screws 7' which pass through holes 8 formed in the arms and made,

somewhat larger than the "screw-stems in which way,.while the heads of. the screws'can ciamp the ends of the arms upon' the mainframe or some suitable fixture thereon, an adjustment of the ribbon-guide can be made by loosening the screws. As a means for engaging and guiding the ribbon, the said rib-- hon-guide is provided at itsfree end with hook shaped lips 9 (Figs. 3 and 4) which embrace the upper edge portion of the ribbon. These guide-lips 9 are separated bya gap 10 (Fig. 3) in the plate of which the ribbonguide is formed, thereby insuring parallelism between a suitable'extent of ribbon and also leaving suitable space for the impression devices. a

The ribbon-guide can of course be made of as many piecesas 'may be desired, although as a simplified and economical construction, it can bemade from a single sheet-metal plate. The ribbon-guide is also provided with a paper-shield K having an opening K with of the paper-shield also provides a line indicator,and to such end the paper-shieldisadapted in heightwith reference to the line. The paper shield is also removably held-upon the ribbon guide, so that whenever necessary, it can be removed therefrom. As a means for thus detachably securing the shield upon the ribbon-guide,thelatter has its-free end formed or provided with upturned flanges 11, each having a vertical slot 12 (Fig, 3). The papershield, consisting of an oblong plate, has its ends adapted to form hooks for engaging in slots 12 of the flanges 11 on the ribbon-guide, and as a simple arrangement for locking the paper-shield in place, its end portions which are extended through and out from said slots are bent to form pintlesockets 13 (Fig. 4) for the pintle-portions of swinging latchesl l. With sucharrangement the pintle sockets can be of greater diameter than the width of the slotsso that the paper shield can only herei'noved by raising it from the ribbon-guide,

and by providing flanges 11 with catchlips 15under which the latches can becaug'hhthe paper shield can be locked down and held against removal until the latches are freed from their allotted catches. p

The ribbon-guide is raised from its normal position by a cam-movement which is timed for raising the ribbon-guide to a proper extent. The cam-movement embodied inFigs.

1 and2 comprises a vibratory arm or lever L arranged to act against a cam incline M which is combined orassociated with the ribbonguide, the plate or member which forms the incline being made'separate from but in hearing contact with the ribbon-guide in said two figures, while in Fig. 8theribbon-guide is directly formed or provided with said incline.-

VVithreference first. to Figs. 1, 2, and 6, a plate 16 is provided with the incline M and is hinged at l'Z upon asupporting bracket 18 which is'in turn secured upon the main-frame of the machine. 7 i t 1 H The upper free end of the lever L is normally in juxtaposition. to the upper portion of the cam-incline M, and .the ribbon-guide normally bears upon the forward free end portion 19 of the cam plate 16. When thereforethe leveris swung. forward it will act against theincline and lift the cam-plate, which latter in rising will lift the ribbon guide. The free end of the lever preferably acts against the cam-plate through the'medium of an anti-friction roll 20 which is carried by thelever and shown in'dottedlinesin Fig. 2. The lever L is employed in the constructionof machine shown, for actuating one of the typebearing segments, and hence said lever is understood to be duplicated, so that each typebearing segment can have its own actuating lever. Under such system, some of the letterkey levers K serve to operateone of the levers L while others serve to operate the remaining one of said levers L as illustrated in Fig. 1, wherein'a few only of the letter-key levers are shown, those at the rightserving to operate lever L at the right, and those at the left serving to operate lever L at the left.

As a means for thus actuating levers L from the letter-key levers, the leversL are secured upon separate rock-shafts, whereof one rockshaft 21 is shown in end view in Fig. 2, and upon said rock-shafts are arms N having latorally extending portions 21 which normally chines of such class, the throw or actionsof V are of a circle about an axis through the rockribbon-guide to the required height.- Further portion 22, the principle of construction begage the under side ofthe ribbon-guide. By

- such arrangement, should the action of either are variable, as is well understood, for the purpose of permitting different actions-to bring difierent type into position for printing, and hence, where levers L are employed,

;may be swung. Thus, the initial forward.

- as soon as the lever passes the lowest point of will rest upon the lever, while the latter inmoving in an arc correspondingwith thecurvature of the plate, will simply maintain the.

the leversso as to permit accurate adjust- Y ment, and "tosuch end each lever carriesa plate 23, (see. Fig. 6) which is adjustable on rolls.-. For exlmmpletheplate 23 may have slots 24'and 25 and be secured to its allotted from the ribbon-guide, itris preferably prorest upon the letter key levers K. In mathe levers L or other devices employed for operating a type-wheel or type-bearing segments the depressions of the type-keys will cause one or'the other of said levers to have difier; ent degrees of swinger throw. vAs a means therefore for compensating for such-varying degrees-of throw on the part of levers L, the cam comprising incline M, further comprises a horizontal or proximately horizontal portion 22 which is desirably curved or formed on the shafts or spindles whereon the levers L are arranged. By such arrangement, forward swing on the part of either lever L will raise the ribbon guide to a predetermined, uniform height, no matter to what extent the lever swing on the part of the lever causes'the latter to act against the cam incline and raise the forward swing on the part of the lever will not however further lift the ribbon-guide, since the incline, the portion 22 of the cam-plate plate andribbon-guide resting upon the plate, at the height attained by the action of the lever against the lowest portion of camincline My The cam-plate 16can be forked as shown, and in such case each prong or arm portion can have an inclineportion Mfand curved ing however the same as a single incline and curved portion for the two levers.

The anti-friction rolls are adj ns'table upon the lever and adapted to support one of the lever by set screws 26 arranged to pass through such. slots.

- Where the cam-plate 16 is made separate .vided with an upturned end-portion 27 which is founded as. in Fig. 4. and arranged to enlever L cause any sidetilt on the part of plate 16, such motion will not be communicated to the ribbon-guide, since the latter rests upon a rounded hearing which allows the plateto tilt or rock sidewise, independently of the ribhon-guide.

The cam-plate 16 normallyrests upon a bar 28 on the main-frame, and is lifted therefrom by one or the other of the two levers L as hereinbefore explained.

While I prefer forming the cam portions M and 22 on a plate which is separate from the ribbon-guide and also separately hinged, particularly for the purpose of preventing side tilt or wabble on the part of the ribbon-guide,

as aforesaid, it'is' understood that-I can form or'directly provide the ribbon-guide with such cam as in Fig. 7 wherein the ribbonguide is shown formed with such cam portions M, 22.

In Fig. 9 the arrangement shown is practi- 'cally an inversion of the cam arrangement hereinbefore described, but serves to attain the same end, and involves a principle common to both. In said Fig. 9, the anti-friction roll 20 on lever L acts against an incline M formedona vibratory arm 28. Said arm 28 is fixed on'a spindle 29 to which in turn'is fixed a cam diskBO, arranged to engage the underside of the ribbon guide. When the leverL is in its normal position, the ribbonguide restsupon the fiat'or straight portion 31 of the cam disk. vWhen the lever is swung forward it will act against inclineM and swing ter will while thus turning, lift the ribbon guide until its cylindric or circular portion bears against the same, and hence further rotation on the part of the disk will ceaseto lift the ribbon-guide, since the latter will then beresting upon the circular portion of the disk. p

The arrangement of Fig.-9,'like that in pre .ceding figures, involves the cam-incline M in arm 28 upwardly. This tip-swing on the part g of arm 28 will turn the cam disk, and the latconjunction with the ribbon-guide, and both of shchfarrahgements involve a cam-movement'timed for raising the ribbon-guide to somedeterminate or uniform height and positively maintaining it in such position during any such action or motion as may be in excess of that requisite to bring it to such height.

What I claim as my invention is 1; In a type-writin'gmachine, the combination of a movable ribbon-guide, a cam-device coacting directly with the ribbon-guide and comprising a cam incline M,and a cam portion22 extending from the lower portion of IIO ' an'incline and fa'vibr'atory lever arranged for action againstsaid incline for raising the rib hon-guide, substantially as and for the purpose described.

4.- n ype-wr t ng ine't e m in tion of a movableribbon-gnide and a vibratory plate arranged for raising the'ribbonguide and having a rounded bearing portion 27 which engages the side ribbon-guide,

whereby to cause the latter to move in a right line irrespective of the position assumed by the said plate substantially as and for the purpose described. I

posing the line comprising a movable ribbonguide, a cam incline M movable with the ribhon-guide and having at its lower end a forwardly extending portion 22, and a vibratory lever having an anti-friction roll arranged to traverse said incline andtorwardly extending portion 22, substantially as described. 6. In a type-writing machine comprising a rotary type-wheel or segment, the combination with a vibratory lever for operating the type-wheel or segment, of a movable ribbonguide and a cam incline normally in path of said lever and arranged substantially as set forth ,for raising the ribbon-guide. I

- 7. In a type-writing machine, the combination with a movable ribbon-guide, of a vibratory lever for raising the type-ribbon guide and carrying an anti-friction roll for the pur- 5. In a type-writing machine, means for expose set forth, and aholder for said roll adj ustablyheld upon the lever. i 8. In a type-writingmachine, a reciprocating ribbon guide provided with spring arms by which it is held upon the machine, said guide operating independently of the ribbonspools substantially as set forth.

9. In type-writing machine, areeiprocat- 9, separated from one another by a gap 19 and serving to engage the ribbon, and having resilient arms 4 adapted to be secured to a rigid portion of the machine substantially as set forth.

10. In a type-writing machine a movable ribbon-guide provided with a removable paper shield K, and means for temporarily described.

guide provided with ribbon engaging portions 9, and slotted flanges l1, and a papershield removably held upon the ribbon-giiide, substantially as described.

12. The combination with theribbon-guide having slotted flanges 11, of the removable catches 1.4, substantially as set sorth.

Witnesses:

BETA M. WAGNER,

CHAS. G'. PAGE.

locking said shield in place, substantially as 11. In a type-writing machine, the ribbon- I paper-shield K having pin'tle sockets 13 and CHARLES K. NICHOLS.

ing ribbon guide' provided with hook-portions

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