US914612A - Type-writing machine. - Google Patents

Description

B. G. STIGKNEY.

TYPE WRITING MACHINE. APPLICATION IILED MAR. 27,1 1897.

Patented Mar. 9, 1909.

2 SHEETS-SHEET 1.

5141mm toz B. O. STIOKNEY.

TYPE WBITIN G MACHINE.

APPLICATION FILED MAR.'27, 1897.

Patented Mar. 9, 1909.

2 SHEETS-SHEET 2.

m H nH HH M wibnaooc a UNITED STA'llES llifi TENT OFFICE.

'BURNHAM O. STIOKNEY, OF ELIZABETH, NEW JERSEY, ASSIGN-OR, BY MESNE ASSIGNMENTS, TO UNION TYPEWRITER COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented March 9, 1909.

Application filed March 27, 1897. Serial No. 629,482.

To all whom it may concern:

Be it known that I, BUR'NHAM O. STICK- NEY, a citizen of the United States, and a guide; improved means for'effecting .a relative backward or forward line spacing movement between the rinting instrumentalities and platen, or for s ightly rotating the platen sothat figures and other characters may be written above or below the line of writing; and a practicable construction of muffled laten, whereby the noise arising from the lows ofthe types is materially diminished. To these and other ends which will hereinafter appear, my'inventmn consists in the various features of construction and combinations of devices hereinafter more fully ap ended claims.

v n the accompanying drawings, Figure 1 'is a plan of a paper-carriage, some parts be ing omitted and others broken away, to more clearly exhibit the improvements. In this view the platen is of the usual construction.

Fig. 2 shows a front elevationand a plan of the paper-shelf stand; Fig. 3 shows detached I views of the. platen shaft, the thumb -wheel,

and the screw by which'the wheel may be secured to the shaft; Fig. 4 .is a sectional view of one form of thumb-wheel; Fig. 5 is a sectional elevation taken airline Z, of Fig. 1 Fig. 6 is a like view, takenaat line-Y; Fig. 7 15 is-the front pa er-guide, viewed from the rear; .Fig. 8 is, t e paper-shelf, viewed from beneath; Fig. 9 is alike view to Fig. 1, omitting the paper-shelf and various other parts for the sake of clearness, and showing the I muffled lplaten, which in this view is provided with a t umb-wheelat each end; Fig. 10 exhibits the la t en after the tympan has been removed, s owing the'bed of sound-deadening material in'whieh the tympan rests, as

5 lwell'es a side view of one of the rubberrings;

described and particularly pointed out in the 52 that aresecured at each end of the platencover or tympan; Fig. 11 is a like View to Fig. 10, the rubber rings 52, however, having been. removed; at this figure is also shown an end view of the sound-deadening tube '50; Fig. 12 isa sectional plan, illustrating the manner of supporting the platen upon the shaft. This figure gives also a-modifiedconstruction of thumb-wheel, showing an end view of the latter; Fig. 13 is a like view to Fig. 5, but presenting a sectional view of the muflied platen; and Fig. 14 presents both edge and side views of one of the leather washers of which the tympan is preferably made up.

Throughout the several views similar parts are designated by similar numeralsof reference.

The platen frame, which may be of any usual or desired construction, is illustrated as consisting of a front bar 1, rear bar 2, and end bars 3, 4; from the rear bar 2 arms 5, 6 extend rearwardly, to pivotally engage the platen frame to the usual spacing rack 7 and to also support the platen frame upon the usual hinge and-guide rail 8.

Detachable platen-Referring to Figs. 1 and 3, the platen is shown as constructed in the usual manner with a wooden core, surrounded by a rubber tube of suitable hardness, which may be termed the tympan, as it forms a backing for the-paper when being impressed by the types. s usualthe platen is capped at each end by a plate or platen head 10, which may be secured to the platen shaft 11 in any suitable manner, so

that the platen will be rotated by the shaft. 'At its right-hand end the shaft is preferably provided with a nipple 12, that turns in a socket formed in the end-bar 4; In the lefthand end of the shaft is formed a socket 13, for receiving the inner end of a short tubular stem, hollow spindle or journal 14, which is .journaled in the platen frame and to the outer end of which is ri idly secured a thumb I wheel 15. Thethum -wheel. and tube are secured to the shaft by 'a long screw .16, which passes axially through the finger wheel and the tubeand enters a threaded depression 17 at the bottom of the socket 13.

his screw may be provided with a milled head, so that'it ma be removed and replaced without the ai of a tool, as illustrated at Fig. 4. To detach the platen, the screw 16 and thumb-wheel arefirstremoved; then the left hand end of the shaftis raised until sides, to enable them to yield when forced trated as it clears the end bar 3, and the platen is moved lengthwise to withdraw the nipple 12 from its seat.

As shown in the modification at Fig. 12, the tube 14 may be omitted, and a screw 16 preferably provided with a taperin nipple,

rigidly secured to the thumb-whee 15.

socket is formed in the endof shaft 11, the inner extremity whereof is tapered to match the nipple, and the outer end whereof is threaded. A longitudinal groove or slot 16 maybe cut in the screw, whereby it is en abled to yield as it is screwed into its seat, thus securing a better hold upon the shaft. This construction may be used at the lefthand end of the platen-shaft, if desired. For the right-hand end of the shaft I prefer the construction shown at Fig. 1, as the nipple 12 may be made of very small diameter, thereby minimizing the rotary friction of the platen arising from the pressure of the usual platen check spring 41, which is generally placed at this 'end of the platen.

To prevent endwise shake of the platen, the nipple 12 is arranged to bear against the bottom of its socket, while the other end of the shaft bears against the inner side of the bar 3. In the modifications shown at Figs. 9 and 12, the right-hand end of the shaft bears against the inner side of the bar 4.

' Adjustable paper-sh'eZf.-Usually the paper-shelfand its supporting stand are made integrally; but I prefer to make them separately, so that the paper-shelf may slide upon the stand; Referring to Fig. 2, the stand may be made of a strip of sheet metal, bent downwardly at its ends, the bent portions being formed into tubular legs 18, which fit in the holes 19 usually provided for this pur. pose in the rear bar 2 of the latch frame. The tubular portions may be 1e t open at the into the holes 19, thus securing a firm hold against accidental displacement whilepermitting easy withdrawal when desired.

- The horizontal portion of the standis illusrovided with two longitudinal slots 19. n the under side of the papershelf 20 are secured a pair of headed studs 21 (Fig. 8), the shanks of which pass through the slots 19, and the headed portions of which overlap the edgesof 'the slots. By this means the paper-shelf may be firmly secured to the stand, and permitted to move endwise thereon.- The studs should be constructed to fit ti htly in the slots, or the heads should bin slightly upon the stand, to cause frictional opposition to the movement of the pa er-shelf. If preferred, the studs may be al owed'to fit loosely, and the stand orv the paper-shelf -or both may be length lines are written.

employed for the purpose.

force to prevent the paper-shelf from creeping in consequence of the jarring .of the paper-carriag'e-in operation. Any usual friction device may be used for this purpose. If ,a stationary stand is used, it may be otherwise constructed and serve equally well...

If desired, a thumb-screw 22 may be provided, the threaded end of which enters a threaded hole 23 about midway of the table or horizontal portion of the stand. After the paper-shelf has been adjusted to the desired position, the thumb-screw -may be used to lock the shelf'to the stand; or it may be turned just sufficiently to bind the shelf slightly, to prevent creeping, but so that by the application of force the shelf may be readjusted without manipulating the screw. The shelf may be provided with a longitudinal slot 24, to permit the adjustment thereof independently of the screw-ste m.

As illustrated at Fig. 1, the upper lefthand corner of the shelf may be provided with a series-of graduations (corresponding preferably to those used in common linear measurement), and an index 25 may be secured upon the arm 5 of the platen frame, to cooperate with the series of graduations for the urpose of indicating the width of the left-hand margin upon the sheet when full If the scale and index be used, it is immaterial how they-are constructed; or which is secured to the shelf.

In operation, a sheet of pa er is insertedwidthwise in.

in the machine and adjuste the usual manner. Then the paper-shelf is moved longitudinally in either direction, until its left-hand edge (preferably) is brought to coincide with the left-hand edge of the paper. Thereafter the sheets are inserted with their left-hand edges likewise coinciding with the edge of the paper-shelf, whereby a uniform margin is secured upon the several sheets. It will be understood that this device will be especially useful when writing upon sheets provided with ruled marginal lines. 1

As illustrated atFigs. 1 and 8,the shelf may be provided at its left-hand end with an adjustable abutment, preferably in the form of a screw, adapted to cooperate with an abutment-26 formed atthe rear portion of the endbar 3 of the platen frame, to mechanically determine the position to which the paper-shelfshall be adjusted. This device would prove useful in cases wl'icre the operator has frequent occasion to adjust the shelf to a single predetermined position. The screw 27 may be provided with a milled head, for'ready manipulation, and passed through a threaded hole in a block 28 secured to the under side of the shelf. The screw should fit tightly in the hole, to prevent acridental rotation; 'or'any of the usualdcvices may be Other conetructzons of adjustable abutment may be where the erator has frequent occasion to hand edge of the sheet.

' made to serve the ur ose.

axis, or that it-should move in astraight line,

made to serve the purpose. If desired, a du licate adjustable abutment may be pro viriiad at the other end of the paper-shelf, as indicated by dotted lines 29 at Fig. 8, to co- 0 rate with the lug 30 (Fig. 13) on the p aten-frame, which would be useful in cases adjust the s elf from one to another of two predetermined ositions, as such ad'ustment may be 0 tained by simply pusliing the'shelf in either direction as far it will go. I When narrowsheets are used, they may if desired be inserted at the right-hand end of the laten, and the right-hand ed e of the shelf? be brought to coincide with t e right- To remove the pa er-shelf from the machine, it isesimply ifted to withdraw the legs 18 from the holes 19; but if the index 25 be employed, the shelf must be pushed to the right until it clears the index, before lifting.

Ot er constructions of paper-shelf may be It is not essential that the shelf s on d slide, if it be desired to use other than a sliding movement to carry out the purpose'of this portion of the invention; it is not essential that the shelf should move in a line parallel with the platen so long as it is adjustable relatively to the platen in a manner to enable the operator to secure a uniform or predetermined margin upon the written sheets. It is not essential that the shelf be provided with a stand, or that it be made adjustable with reference to the stand, so long as it is adjustable relatively to the platen. i

It will be perceived that the pa er-shelf constitutes a gage or register, an if desired it may be provided at either or both ends with an u turned lip or stop, as shown at 31, against w ich the edge of the paper may be laid. This lip may be omitted, as thepaper can readily be brought to coincidewith the edge of the shelf without its aid.

The provision of an adjustable abutment for a paper-gage, whereby the position of the gage may be mechanically determined, I believe to be broadly new, and this feature may be applied to constructions of gage not in- VOlVJIlg the adjustment of the paper-shelf.

I do not deem it essential that the papershelf or stand be made detachable from the platen frame, although I prefer to so construct them. Obviously the paper-shelf maybe otherwise (letachably secured to the platen frame; and it may be constructed of any preferred shape or material, and applied to any construction of platen frame or papercarriage.

. From paper guidc.-Heretofore this guide has been made in. theform of a metal plate, which inigpractice has been found to-unduly obscure 6 writing; and if made ac narrow.

the axis of the platen and the guide at itslowerpnd stands well away from the laten, in a suitable position to catch the cading edge of the paper; while at the upper end it is curved about concentrically with the platen, so as to turn the sheet back over the platen.

Writing above 01' below the Zine.The line space wheel 34 may be actuated by any suitable mechanism (not shown), to rotate the platen with a step-by-step-motion in the usual manner. To guard against accidental rotation of the platen, I provide preferably a spring-pressed check-bar 35, which is pivoted at its rear end to the platen-frame at 36, and rovided at its forward end with an antirictionroll 37, which engages the under side of the lines ace wheel. The checkig. 5, the guide extends below bar may be provi ed with an upwardly and forwardly extending arm 38, the free end thereof being provided with a tooth 39, and a finger-piece or key 40 (Figs. 1 and 6); In operation the finger-piece isdepressed, the

roll 37 swin ing out of engagement with the line-space wdieel, and the tooth 39 into engagement therewith, the relative position of the tooth 39 being such that the-wheel-isforced to rotate slightly in the direction of the arrow, until the tooth 39 becomes seated between two adjacent wheel-teeth, thereby automatically or mechanically determining the extent of rotation of the-platen, which preferably is less than half the usual linespace distance. The path pursued by the point of the tooth 39 is indicated by the curved dotted line A. As long as the key 40 is depressed, the types will strike slightly above the line of writing. When the key is released, the spring 41 will operate to lift the check-bar, the roll 37 reengaging the Wheeland forcing it to resume its original position. This device is useful when writing the numerators of fractions, and in other instances. Provision may also be made for rotating the platen slightly in the reverse direction, for writing the denominators of fractions, etc. For this purpose I preferably construct a lever, and pivot it 1n ears depending from the right-hand end'of the front bar 1 of the laten frame, in proximity tothe line-space w ieel. The forward end 42 of such lever is sha d as singer-piece, upon depression of whidh the rear arm 43 Tie ele- CJI vated, the point thereof swinging in the arc B and'causing the platen to rotate slightly in the reverse direction, until the point or tooth of arm-43 becomes seated between two adjacent wheel-teeth. By this operation the roll 37 is forced outwardly. As long as key 42 is depressed, the types will strike a trifle below the line of writing. Upon its release, thespring shown at Fig. 6 secured to the inner side of the platen frame will cause it to resume its normal position, the shoulder 44 other means.

device,'however constructed, be capable of "effecting a relative backward or'forward line feed movement between the printing i'nstrumentalities and the platen, or of rotating the platen to a mechanically determined extent, ess than a line-space distance. It

is not necessary to rovide for returning. the

platen mechanical y to original position, although I deem this a valuable feature.

Mufiled pZaten.Referring now to Figs. 12 and 13, it will be observed that I have replaced the usual wooden platen core with a tubular core 45, made of suitable metal, such as copper, to give the required stiffness without being sonorous. A core formed of wood or. other suitable material may be used if desired, as the gist of the invention does not reside in the employment of a metallic core. Into each end of the tube or core I preferably force a, bushing 46, made ofa sound-deadening substance, such as soft rubber. Each bushing may be perforated axially, and a metallic bushing 47 forced into the perforat ion, so that the shaft 1.1 may be more readily slipped out and replaced. One of the metal-'- lic bushings may be provided with a head or collar 48, so that it may be secured to the shaft by a in or screw (Fig 9). It will be understood t at the rubber bushing is of somewhat larger external diameter than the bore of the tube or core 45, and also that "the diameter of the metallic bushing is slightly in excess of that of the erforation, so that when the parts are assemliled the rubber bushing is in a state of compression, whereby a sufliciently rigid support for the tube or core is] afforded, while there is no metallic or other sound-propagating communication between the core and the shaft. The metallic bushings are not essential. If the central support for the platen be of other constructionthan :1

'tion.

It is only essential that the' shaft, the rubber bushings, or intermediaries may be otherwise constructed to efiect the purpose of the invention. It is obvious that the sound deadening bushings may be applied to platens otherwise constructed in the .70, usualmanner; It will also be-obvious that other features of the muffled platen herein described may be used Without the rubber bushings; but I refer to use the entire combination. It be perceived that the bush ings 46 may be made of any suitable length,

or may be made in one piece ,and it-is not of course essential that the rubber be compressed, so long as the core is suitably sustained upon the central support. The tube or core 45 may be provided with flanges 49, suitable for holding the end plates 10 in posi Surrounding the core 45 is a sounddeadening bed 50, preferably a soft rubber tube. It may be otherwise constructed, as for instance by winding 2. band of felt, asbesvtos, soft rubber or other suitable material a sufficient number of times about. the core. At Fig. 11 are shown both Ian and end views of the tube 50 which as ilustrated extends nearly the whole length of the core, as it is preferably equal in length to the tympan. The usual tubular rubber tympan or platen cover 51, may be'fitted over the sound deadening bed 50, as shown partly in section and partly in dotted linesat Fig' 11. At this 'gure it will be noticed thatat each end a space is left between the extrenfityof the tympan and the metallic platen head 10. In

this space I, insert a sound deadening ring, tube or washer 52, of the same-external diameter as the tym an',.or in other words,' flush with the perip cry of the tym an, thus presenting a continuous cylindrica surface from end to end of. the platen. At Fig. 10 is 165 given an endvi'ew' of, one ofthe rings 52, also a view of the laten with the'tympan removed. willbeyp'erceived that the tympan is embedded in sound deadeningmaterial at all points, except its peripheryia. Ob

viously the tube or bed 50 may be lengthened v .soas to ,fillu .allth'e space between the end plates 10, an the rings 52 may then be made of the same internal diameter or bore as the tympan, so as to fit over the bed 50. The core 45 and the rubber or other materialsun; rounding it taken together maybe termed. a; platen body/Z said platen body being ens-' tained upon the shaft 11 .by the sound-deadening or insulating cushions 46.

Besides serving to subdue the sound, the rings 52 may be utilized for another urpose,- which. is to" insure the true feed oft e paper in passing around the platen. To thls end the rings 52 may be made preferably of soft 125 rubber (too soft to serve as tympan), which is a well known sound-subd'uing material,

.while the paper clings to .it more readily than to the hard rubber usually employed for platen covers. The paper guides 53-wh1ch 1 30 soft rubber, and the tympan 51, of. a harder grade of rubber, may bevulcanized together.

If desired, the tubular tympan may be sawed or cut into a numberof layers, sections or rings, for instance as illustrated. at Fig. 9.

If rings are used, they may be made of such size as to fit snugly over the tube 50, and in assembling the rings they should be set lightly one against another. This materially diminishes the noise arising from the blows of the types, without detracting from the appearance of the work. It will be understood that if the rings should be crowded or jammed closely together, thetvmpan would be as noisy as the original single tube 51. By cutting the tympan into la ers, the tympan is rendered fiexi le, or at east the vibrations are not so readily communicated from one part of the tympan to another, so that its sounding qualities are minimized, while at the same timeit cpn-tinues to form a suitable backing for the paper while being impressed by-the metallic types. So long as this purpose is effected, variousways may be adopted for cutting or dividing the tympan into sections or layers, as it is not essential that the tympan be made up of a series of rings- For instance, the tympaninay be cut spirally, as indicated by dotted lines at Fig.

10. The tympan and its soft rubber bed 50 40 may be vulcanized together, and then di 'vided up into sections. The friction rings 52, the soft bed 50 and the tympanfil may be vulcanized together, and if desired .the

tympan and bed may be cut into rings or. othupon the core 45.

I prefer to construct the tympan of a series of leather rings or layers 54, principally for .the reason that the usual rubber platen covers become so hard within a short period of. their manufacture as to be unfit for use, while the leather remains unaffected by age. By compression, hammering or other suitable treatment the leathershould be rendered of sufficient density for the purpose. In constructing the platen, I prefer to make the washers 54 and rings 52 of an excessive diameter, and then reduce the platen'to the required size by turning or grinding off the excess of material, it being understood that thenrings and washers fi-t tightly over the bed ,50, -"so that they remain firm when being trimmed bythe turning tool.

I do not ciainibroadly herein a cylindrical tympan or platen cover for type-Writing maerwise, and thewhole properly assembled chines composed of a series of leather washers, as that 1s madethe subject-matter of my Letters Patent No. 635,609, Och-24, 1899.

It is not essential that all portions of my invention be usedin the same machine; for instance the friction rings 52 maybe used without the other novel'features. The details of construction and arrange- -ment may be widel varied without discarding the essence of t 1e various features of the invention or sacrificing the advantages sea cured-thereby.

I disclaima ty ewrite'r platen constructed .at or near its en s with means for producing an increased friction at the sides, edges, or margins of the paper; a type-writer platen constructed at or nearits ends with portions which are softer than the working field or portion of the platen; a typewriter platen composed of a hard and smooth working field and a softer and rougher band at each end thereof; and a type-writer platen composed of a comparatively hard rubber shield rovided with depressions and softer rubber bands seated in said depressions as I am not the first inventor thereof.

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

1 In a type-writing machine, the combination of a laten shaft rovided. atone end with a soc et; a platen rame provided-with a hole of less diameter than the platen shaft: and [a thumb-Wheel provided. with a stem adapted to pass through the fhfllfik'ill' the platen frame and to be detachably'secured in the socket; the said end of the shaft bei constructed to bear against the innerside o the platen frame, to prevent endwise move. ment of the shaft inone direction, and the other end of the shaft being detachabl'y mounted in the other end of the platenframe, and also being adapted to bear against the inner side thereof to prevent endwise movement of the shaft in the other direction.

2. In a type-writing machine, the combina- 1 1 tion with a laten shaft provided at one end with a ni p e of reduced diameter and at the vided with a-threadedand tapered socket; a

detachable journal of less diameterthan the shaft and adapted to screw into the socket I andalso to extend outside of the platen frame and a thumb-wheel secured to the outer end of the journal.

.. 4. Ina type-writing machine, the combination with a'platenframe of a platen shaft pro vided with a. threaded and tapered socket; a detachable journal of lessdiameter than the shaft and adapted to screwinto the socket and also, toextend outside'of the laten frame; the inner end of the journal being slotted longitudinally to permit it to yield as it is screwed into the socket; and a thumb-wheel secured to the outer end of the journal.

5. In a typewriting machine, the combination with a platen and platen frame, of an adjustable paper gage free to slide to different positions, and means for limiting the ex tent of such sliding movement, said limiting mealps being adjustable for different pieces of wor v 6. In a type-writing machine, thecombination with the platen and platen frame of an adjustable paper gage and an adjustable abutment fordetermining the extent of the adjustment of said paper-gage. ,7. In a type-writingmachine, the combination withthe platen and laten'frame of an adjustable aper-gage an adjustable abutments for etermining the extent of the adjustment of said paper-gage ineither direction.

8. In a typewriting machine,- the combination with a platen andplaten frame, of an adjustable paper-shelf and an adjustable endwise adjustable paper shelf, and means,

for limiting the extent of such adjustment, said limiting means being adjustable for diiferent pieces of work.

9. In atype-writing machine, the combination with the platen and platen frame of, an

abutment for variably limiting the extent of adjustment of said paper shelf.

10. In a type-writing machine, the combi- 'nation with the platen and laten frame ofan shelf being adjustable as a whole on saidstand, and anadjustable abutment for limiting the bodily movement of the paper adjustable paper-shelf an adjustable abut-- ments for variably limiting the extent of the adjustment of said paper shelf ineither direction.

7 11. In a typewriting machine, the combi-;

nation with a latch and platen frame, of a stand detachab y connected to and supported bytheplatenframe, andan endwise adjust able paper shelf which supports the a er and directs it to the platen, said paper s e being adjustable as a .whole on sai stand in the direction of the travel of the laten.

12. In a typewriting mac he, the combination with a laten and platen frame, of a stand detacha 1y connected to and" sup--.

ported by the platen frame, an endwise adjustable paper shelf which supports the paper anddirects it to the platen, said paper shelf.

13. In a type-writing 'machine, as a means for guiding the leading edge of the paper and turnin it back over the platen without undulyo scurin' the writing, the combinatlon with the-.p aten ofan open wheel and -space whe'elof a j with a check-r01 "vertically elongated wire fraine, substantially as described, suitably supported upon the platen frame, in front of the platen and 7 extending below and "above a horizontal furfier rotation.

1; In a type-writi'ngmachine, the combination with the cylindrical platen and linespace wheel'of means auxiliary to the regular hne spacing mechanism for rotating the wheel and platen less than a line-s ace distance, "means for automatically limiting the extent of such rotation, and means for autoposition. 1 i a I 17 In a ty e-writing machine, the combi-- nation with the cylindrical platen and line splace wheel of a suitable spring-pressed c matically restoring them to their original against acci ental rotation; means auxiliary coking diyice for holding the platen to the re u" i'. line spacing mechanism forrotating It ejwheel and platen less than a line-s acedistancemnd meansforautomatic- I ally imiting'; the extent of such rotation; the construction and arrangement being such that upon the release of the line-space wheel; from-the-controlof the rotating device the spring'i-pressed checking devlce will operate-to restore the wheel and platen to original position.

- 18. In a ty e-writing machine, the combination with t e cylindrical platen and 'linespace wheel .of means for rotating the wheel and platen less than a line-space'distance in either direction from their original positions,-

and means for mechanically determining the,-

extent of such rotationr 19. In at e-writin machine,thecoinbi-v nation with t e cyl in rical platen and line.-

slpring presfsed bar' provided withthe line-space wheel to hold.- it." against Engagement. 1

accidental rotation, and alsofprovided; with a toothed arm whereby;'thegtrollgmay be; moved out of engagement withf the',wheel and the wheel and platen ma also be rotated, and means forlimiting t e'rotationof the laten to a distance lessthan" a full or regu arlinespace.

I 20. In a t e-writing machine, the combi-' nation with -t h space wheel of'a spring-pressed bar provided e cylindrical platen and linenation of. a suitable central'platen-support,

moved out of engagement'withthe wheel and the wheeland platen-may also be rotated; the construction and arrangement being such that upon being released the springpressed-i bar and. roll will. reengage the linespace wheel and restore it and the platen to original position.

2l-.- In. a type-writing machine, the combisuch as a: shaft; a cylindrical platen!- ody including a rigid core; and a suitable sound.- deadening device, such as a bushing, arranged at each. end of the platen-body and serving to sustain the platen-body upon. the central support.

22.. In altype-writing machine, the combination of a. suitable central platen-support, such. as a shaft; a, cylindrical platen-body, including a rigid core; and soft rubber bushings arranged between the core and the central su port, and serving tosustain, the platen-ho. y upon the-central support.

23. In a. type-writing machine, thecombijnation of a. suitable central platen-support,

such; as a shaft; a. cylindrical platen-body, including a rigid. core; and compressed soft rubber bushings arranged between the core and the central support, and serving tosustain the platen-body upon. thecentral sup port. v

2.4, In a.- type-writing machine, the combination'ofiacy indrical platen-body, including a rigid core; sound-deadening bushingsarranged at each. end of the core; a suitable central support, such. as a shaft; andmetallic bushings 'arranged between the sound.- deadening bushings and the central support.

25. Ina type-writing machine, the combination of a cylindrical platen-body provided with a metallic core, a platen shaft, and sound-deadening material arranged between the core and. the shaft and adapted to sustain the platen upon the shaft.

26... I-n.a:.type-writing machine, the oombination of; a platen shaft; a. ri id core; sound-deadening material arrange between .the core andthe shaft and adapted to sustain the core upon the shaft; sounddeadening matefialsurrounding the core; and a tympansurrounding the last mentioned sounddeadening material. 27. In a type-writing machine, the combination of. a. cylindrical tympan; rings of sound-deadening material arranged at each end of the tym an and flush with the eriph'ery thereo and. interiorly provid ed soundsdeadening means for supporting the tympan and the rings.

28. Inatype-Writingnnachine, the combination of a. cylindrical tympan surrounding a bed of sound deadening' material;

- of the, tympan and flush wit thereof; and suitable supporting means.

-port.]

sound deadening-ringsarrwg h h t e perip ery 2.9. In a type-writing machine, the combination of a cylindricaltympan; sound-dead ening rings flush with the periphery of the tympanand'arranged at each end thereofabed of, sound-deadening material arranged within the tympan; ametallic tubular core arranged within the bed of sound-deadening material and provided with end plates. for confining the rings, tympan andbed; and suitable means for supporting the core.

30. In a type-writing machine, as a means for diminishing the noise arising from the blows of the types, the combination of a cylindrical tym an divided into a series of layers; a smoot and even cylindrical sounddeadening bedu on which closely fitted and -a suitable bed.

31-. In a type-writing-machin'e, the-combination of: a; tympan made up of a. series of rings; a cylindrical sound-deadening bed upon which said rings are sleeved and. closely fitted and a. suitab e support for the-bed.

. 32. In; a type-writing machine, the combisaid tym an is support or the d. at each end nationof a cylindrical tym an divided into a series of layers; a soun -deadening bed arranged Within the tympan; sound deadening rings arranged atthe ends of the tympan and flush with the periphery thereof; and a suitable support.

33. Ina type writing machine, the combir nation of a cylindrical tympan made up of layers; a sound;- deadening bed arranged withinvthe tympan and providedwith a'tubular core; a suitable central support,.such as a shaft; and sound deadening material arranged between the centralsupport andthe core and adapted to sustain the core upon the central support, 34'. In aitype-wn'ting machi'ne,.the;c.ombination of a tympan built up of a series of leather rings; a sound deadening. bed an= ranged within the. rings; and a sultable sup- 35. In a type-writing machine, t-hecombination of a tympan built u of a series of leather rings; a sound-dea ening bed arranged'withln the rings; a ring of soft rubber arranged at each end of the tympan and flush. with the periphery thereof; and a suitable su port. I

36. a typewriting machine, the combination of a1platen,.a paper shelf for directing the papertosaid platen, means forafiording a free movement of. the pa er shelf longi,-

.tudinally of the platen to: a just the paper shelf for. different 1pieces of work, and adjustable means for uniting the-eX-tentof ad:- ju'stment of: the paper-shelf. v

37. In a typewritlng machine, the combination ofaplaten .aaper-shelffordirecting the paperato said en, a: finger. on abuts ment carried by said paper shelf and with which a side edge of the paper'is adapted to contact as the paper is introduced into the machine, means for rendering the paper shelf free to be moved longitudinally of the platen to adjust the pa )er shelf to different pieces of Work, adj ustab e means for limiting.

adjustable paper gage free to slide to different positions, means for limiting the extent of such sliding movement's, said limiting means being adjustable for different pieces of work, .and scaleand pointer parts, one of 1 said scale and pointer parts being movable with the gage and the other being fixed to the platen frame.

, 39. In a typewriting machine, the combi-' nation with a' platen and platen frame, of an endwise adjustable paper shelf, means for limiting the extent of such adjustment, said limiting means being adjustable for different pieces of work, and scale and pointer parts,

one of said scale and pointer arts being on the paper shelf and the other thereto. v I

. 40. In a typewriting machine, the combination with a platen and platen frame, of an adjustable paper gage, adjustable abutments for determming'the extentof adjustment of said paper gage in either direction, and scale and pointer parts, one of said scale and ointer parts being movable with the adustable gage and the other being fixed. relatively thereto. a

41. In a typewriting machine, the combination with a platen and platen frame, of an adjustable aper shelf, adjustable abutments for variably determining the extent of adjustment of said papershelf in either direction, and scale and pointer parts, one of ed relatively said scale and pointer parts being carried by the aper shelf and the other being fixed relative y thereto. 4 V v 42. In a ty 'ewriting machine, thecombination of a p aten, and. means cooperative therewith to effect a movement of the platen in either direction at will, each actuation of said means beingeflective to move the platen a given extent. I j r 43. In a typewriting machine, the combinationof a platen, means cooperative therewith to effect a movement of the platen in either direction at will, each actuation of said means being effective to move the platen a given extent, and means for automatically turning the to that whic means. i

1platen in an op osite direction 1t was moved y sald moving 44. In a typewriting machine, the combination with a platen and line spacing means therefor, of means cooperative with the platen to effect a fractional spacing of the platen to permit writing to be effected above the printing line determined by the line spacing means, and-means for automatically returning the platen to the writing line position de termined by said line spacing means.

45. In a typewriting machine, the combination with a platen and line spacing means therefor, of means coeperative with the platen to effect a fractional spacing .of the platen by the line spacing means, and means for automatically returning the platen to the writing line position determined by said line spacing means.

46. In a typewriting machine, the combination with a platen, ofa line-spacewheel,

' above or below the'printing line determined means for rotating said wheel, a fractional device for independently effecting rotative adjustments of said wheel and for mechanically limiting each rotative adjustment ef' the platen whenieflected by said fractional g device. 4

47. In a typewriting machine, the combination with a platen, a'line space wheel, and

its ordinary o crating means, of a fractional line spacing evice having a limited throw and operated independently of said ordinary "operating means, for causing special rotative adjustments of the platen and the line-space wheel and for mechanically limiting the movement thereof. Y

' 48. In a typewriting machine, the combination with a platen and its usual or ordinary line spacing mechamsm, of-a fractional line s ace mechanism constructed to turn thep aten and paper fractional line spaces which differ in wldth from those afiorded .by the main line spacing mechanism, and for mechanically limiting the width of such fractional line spaces to distances intermediate successive tooth spaces of the main line'spacing mechanism.

49. In a typewriting machine, the combination of a revoluble laten, an ordinary line-feeding mechanism mcluding a platenpositioning ratchet Wheel, a 006 crating spring detent normally engaging sai ratchet wheel, an independent oscillatory device having a fixed throw for rotating the platen so as to produce specialline-feeding movements of the paper and for automatically releasing the detent when said oscillatory device is actuated.

.50. An auxiliary line spacing device for.

typewriting machines, comprising an actuating device normally out of operative engagement with the platen, means 00- operating with said actuating device for r0- tating the platen independently of the line spacing mechanism of the machine and for limiting in scope the movement of the platen under the influence of'said actuating device to a distance less thana normal line space,

'. engagement with the paper cylinder, adapted cylinder and for "rotatin to rotate the latter in the direction opposite to the normal rotation for spacing the hues,

and means operatively connected with the paper cylinder and with which said actuating device 005 Jeratesto rotate the cylinder a mechanically determined extent in the aforesaid direction independently of the line spacing mechanism of the machine.

52. An auxiliary line spacing device for typewriting machines comprising an actuat- -ing device normally out of operative engagement with the paper cylinder, adapted to rotate the latter in the direction opposite to the normal rotation for spacing the lines, means for affording an operative engagement of said actuating device with the aper the cylin'er in the aforesaid direction in ependently of the line spacing mechanism of the machine and for limiting in scope the movement of the cylinder to a distance less than a normalline space 53l In a ty ewriting machine, the combination of a p aten, a pawl and ratchet line spacing mechanism cooperating with the p aten for effecting line spacing movements of the laten through given distances correspom ing to the distances between two or more teeth of the ratchet, and auxiliary fractional line spacing mechanism cooperatin operatively with the platen and effective to move the platen a given distance at each operation.

54. In a ty ewriting machine, the combination of a p aten, a pawl and ratchet line s acing mechanism cooperating with the p aten for effecting line spacing movements of the platen through given distances corresponding to the distances between two or more. teeth of the ratchet, and fractional line s )acing devices that are adapted to move the p aten a fraction of the distance between two teeth of the ratchet at each operation.

55. In a ty ewriting machine, the com; bination of a p aten, a pawl and ratchet line spacing 'meclianis'm' cooperating with the p aten for effecting line spacing movements of the laten through given distances coirrespon ingto the distances between two or more teeth. of the ratchet, auxiliary or fractional line spacin mechanism cooperating operatively with t e platen and. effective to move the platen va given distance at each 1 operation, a detent cooperating with said I ratchet, and means for throwing said detent out of cooperation with the ratchet.

56. In a typewritingmachine, the com-; binatiomof a platen, means for moving the platen predetermined line space distances,

means for moving the platen a mechanically.

determined fraction of a line space distance as determined by said first mentioned means and means for automatically returning the platen to the'writing line position deter mined by said'first mentioned moving means. 57. In a typewriting machine, the combination of a platen, means for moving the platen a predetermined linespace distance at each operation, and means for moving the platen a mechanically determined fractional extent of the distance it is ca able of being moved at each operation T y said first mentioned means.

58. In a ty ewriting machine,the combi-:

nation of a p aten,. and means for effecting a' fractional predetermined backward movement of the platen for producing exponent work;

59. In a ty ewriting machine, the combination of av p aten, and means for eiiecting afractional predetermined backward moveoperable at each actuation of the key to effeet a predetermined fraction of a line space movement-of the platen.

61. In a typewriting machine, the combination of 'a rotative platen, line spacing mechanism therefor, and key actuated means operable at each actuation of the 'key to eflect a backward fractional spacing of the laten for a predetermined extent less than a in'espace distance.

62. In a typewritin machine, the combination of a cylindrica platen, normally dis engaged means for turning the same forward step by step, manual devices to turn the platen instantly backward a fixed distance, and a spring for instantly restoring the platen to its original position'when the man-f ual devices are released.

63. he typewriting machine, the combination of a platen, a finger wheel therefor, a platen frame, and a screw that takes into a part carried by the platen and extends axiallythereof through said finger wheel and which is rovided with a thumb head by which sai screw may be screwed into place and unscrewed, said screw constituting means for (preventing the platen from being dismounte from the platen frame.

64. In a ty' ewriting machine, the combiand a screw carried by sa1d finger wheel and mounted so that it is free to rotate therein, said screw extending axially of the laten and adapted to be'connected therewith to retain theplaten inthe platen frame.

65. In a typewriting machine, the combination of a p aten, a finger wheel'therefor,-

nation of a platen, a platen frame, "a finger wheel having a hollow spindle,' and a screw which passes through said hollow spindle andengages with-a part carried b the platen :to maintain the fingerwheel an its spindle connected withv the platen and to prevent 67. In at pewriting machine, the combination of a p aten, a platen frame, a threaded part connected with the platen, a sleeve hav- I ing a bearing in the laten frame, a finger wheel connected to said sleeve, and a screw rod that passes through the finger wheel and,

sleeve and engages said threaded part; p 68. In a ty ewriting machine, the combination of a p aten', a platen frame, a platen shaft having an 'internallylthreaded opening,

a sleevehaving" a bearing in the platen frame, a finger wheel connected to said sleeve, and a screw which-passes through the q finger wheel and sleeve and engages said in- -ternall threaded opening in the shaft.

69. n a typewriting machine, the combination of a-platen frame, a platen shaft journaled at one end in the platen frame and formed at the other end with a central opening, 'a'hollow spindleprojecting through a part of the platen frame into said opening,

a finger wheel connected with said spindle,

and a connecting device that passes through said finger wheel and spindle and connects the s indle to the platen shaft and enables the p aten to be removed from the platen frame when desired.

Signed at Elizabeth, in the county of Union, and State of NewJersey, this 25th day of March,- AMD. 1897.

. BURNI-IAM C. STICKNEY. Witnesses:

JosEPn F. JAQUITH, WM. E. ALLEN.

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