US1213189A

US1213189A - Type-writing machine.

Info

Publication number: US1213189A
Application number: US1799815A
Authority: US
Inventors: Frederick A Hart
Original assignee: UNDERWOOD COMPUTING MACHINE CO
Current assignee: UNDERWOOD COMPUTING MACHINE CO
Priority date: 1915-03-30
Filing date: 1915-03-30
Publication date: 1917-01-23
Anticipated expiration: 1934-01-23

Description

Patented J an. 23, 1917.

' INVENTOR' :ATTORNJ.

1 UNITED STAT S PATENT "OFFICE.

rnrmamcx a 1mm, or mawanx, NEW mnsnr, ASSIGNOB, BY unsm: Assmmnrs, 'ro mnnwoon conru'rmc uacrmm 001mm, or new Yonx, 11.1., a conro RAT-ION 01' NEW YORK.

'rYrE-wm'rmo nacnnm.

Patented Jan. 23, 1917.

. application filed larch 80, 1915. Serial Io. 17,908.

X To all whom it may concern:

Be it known that I, Fnuonmcx A. HART,

a citizen of the United States, residing in chines, of which tion.

Newark, in the county of Essex and State of New Jersey,

have invented certain new and useful Improvements inTypeJVriting Mathe following is a specifica- This invention relates to means for squarin the leading edges of work-sheets w1th re ation to. theprlnting line on the platen of a typewriting machine, and to closed a gage for means for feeding the work-sheets.

"A feature of the invention is to provide improved means at the delivery side of the platen for s uaring the work-sheets thereon, together wit means for feedin the sheets accurately after they have passe beyond the control of the usual platen feed rolls, thereby enabling the printing to be extended to the bottom edge of the work-sheet.

A paper squaring table for the work-sheets may be located at the delivery side of the platen and extend upwardly and rearwardly from the platen to form a support for the work-sheets as they are adjusted to a squaring ga e at the upper ed of the table. A work-s eat-feeding coup e may comprise feed rolls above and beneath-the: squaring table, the lower feed rolls projecting through openin in the table to bring the bite of the rolls su stantially in the plane of the upper surface of the table for holding and feeding the work-sheets while the latter are supported on the table. The table, or a portion thereof, may extend the work-feeding couple in position to guide the leadin edge of the work to the bite of the rolls w en the work is advanced by the rotation "of the platen. The said feed rolls may be'separated to permit placing and adjustment of thework-sheets on the table or their removal from the machine, and the paper squarin gage at the upper end of the table enables t prlnting line on the platen.

In the McCormack Patent 929,158, is disthe leading edges of the being mounted above the platen at the to of an upstanding plate upon which the eading edges of the sheets are adjusted, and said gage is movable out of the path of the sheets. It is found in performing a certainclass of work that sufisheets, said gage,

appear to between the platen and e operator to square the leading edges of the sheets with respect to the cient accuracy of register is not maintained among the several sheets when they are drawnaround the platen, even though they i i whereby the outer sheet travels at a different speed from the inner sheet as the platen revolves; all the sheets being, in said McCormack. patent, pressed against the platen to revolve therewith. Where man copies have to be made simultaneously, an where each sheet is provided with horizontal "rulings with which it is intended that the type impressions shall register, it is found that perfeet register of the type impressions with".

the ruled lines is not secured, owing to the aforesaid difference in speed of travel of the outer sheets relatively to the inner sheets, whereby the ruled lines upon the outer sheets creep in respect to those upon the mner sheets. Thus when a number of sheets are fed together around the platen there is a tendency for the leadi end of the outer sheet or sheets to creep re atively to the leading ends of the inner sheets, owing to the v greater are through which they must travel, I on account of their greater distance from the axis of the platen. As a result, the leading edges of the sheets, if gaged before being advanced around the platen, are, when the sheets are brought to printing position, separated or stepped, with the innermost sheets a substantial distance out of register with the outer sheets. With the sheets thus out of register, the types will not print at the same relative position on the several sheets. If the sheets are ruled and the outer sheet 'is brought with a ruled line to the printing line of the platen so that the printing line extends along the ruled line, duplicated printing on the underlying sheets, will be out of register with the rulmgs aof said underlying sheets, In the present invention this dlfliculty is overcome, because when the several sheets are adjusted to the gage, the rulings thereof are. inaccurate register, and this is maintained. The cooperthe printing line at the same f vance feed rolls are geared be fed between them at the same surface speed as that of the platen; and when the advance feed rolls are used for the urpose of feeding a pack of horizontal y-ruled sheets which must be kept in accurate register, the usual bottom feed rolls may be cast off, so as not to force the sheets a ainst the platen, which would interfere wi uniform feeding of all the sheets which is effected by said advance rolls. When the machine is used for other purposes, the bottom feedrolls may press the sheet or-sheets against the platen, and the advance rolls may be either working. or released, as circum- 1 having eccentric bearings in the ends of the platen frame, said shaft rotatable by a hand crank to separate the rolls or return them to operative position.

The feed rolls may be positively driven from the platen by a gear train comprising a gear on the platen and intermeshing gears on the shafts of the feeding couple, whereby both members of the couple are ositively driven. The provision for positive y driving both members of the couple is of value-in securing a reliable and positive feeding of the work-pieces, and is-of special importance when the platen is of great length. The said feeding couple may coiiperate with the usual platen feed rolls running on the under surface ofthe platen, to feed the Work-sheets over the platen, and also positively operates to feed the work-sheets and hold them in alinement on the platen after the lower edges of the work-sheets have passed beyond the platen feed rolls. The work-sheets may thus be fed forward, and the printing con tinued to the bottom of the sheets, or as close to the bottom as desired. 1

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a perspective view of the invention applied to an Underwood typewriting machine. Fig. 2 is a sectional end elevation view. Fig. 3 is an end elevation with the paper gage in operative position, and the rolls of the feeding couple separated. Fig. 4

is a similar view with the gage thrown to its inoperative position, and the feed rolls in operative position.

The platen 5 is mounted on an axle 6 journaled in the ends of a platen frame 7,

p the lattermounted on a carriage 8'. Types 9 are '0 erated in the usual manner, to strike upwar ly and rearwardly against the front the face of the platen to print on work-sheets 10.

. The platen ma be rotated for'line-spacing laten ax e. The (platen may also be rotated y the usual han wheels 14 on the platen axle. Front and rear feed rolls 15 and 16 run on the under surface of the platen and cooperate with the latter to feed worksheets around theunder surface of the platen and upwardly past the printing line. These feed rolls may be thrown off the platen by. a key 17 connected through a link 18 to a rock shaft 19 formed with flats or cams 20 to rotate levers 21 carrying the feed rolls, so that when the key 17 is depressed, the rolls are thrown off the platen.

The parts thus far-described may be of the usual construction found in the commercial Underwood machine.

A paper adjusting and squaring table or plate 22, which may be mounted on the platen frame, extends upwardly and rearwardly from the front face of the platen. A paper squaring gage 23 carried on -brackets 24, may be swung forwardly (by means hereinafter described) from the Fig. 2 position to the Fig. 3 position, in which it projects forward past the surface of the table and parallel with the printing line to enable the operator, by bringing the leading edges of the work-sheets against the gage, to.

square the sheets with relation to the printing line on the platen. The gage 23 is operated in conjunction with a work-sheetfeeding couple, comprising rolls 25 over the table 22, and rolls 26 beneath the table, and projecting through openings in the table, the line of contact of the rolls 2:") and 26 being substantially in: the plane of the table sur face so that the rolls grip the work-sheet while the latter lies flat on the table.

The upper and

lower rolls

25 and 26 are respectively mounted on hollow-shafts 27 and 28, said hollow shafts being loosely mounted on shafts 29 and 30, the latter supported in brackets 31 and 32 on the platen frame The mounting for the shaft 29 comrises an'eccentric 33 fixed to said shaft and 3ournaled in the bracket 31, and a sleeve 34 fixed to the shaft eccentric thereto and journaled in the bracket32. A crank 35 .is fixed to the shaft 29 and provided with a handle 36 to rotate the shaft, and thereby move, the feed rolls 25 .into and out of engagement with the rolls 26. A spring 37 connected to the crank 35 holds the latter in either position, and a stop 37 on the sleeve 34 limits the throw of the crank-in the direction to separate the rolls. The crank 35 also serves to throw the gage 23 into and out of operative position, and for this purpose the brackets 24 which carry the gage are fixed to rock arms 39 on a rock shaft 40. A link movement of ,thefshaft e H and 26 are separated, ad swi g t 3 t W9 6 9g tlqn When the feed rolls25 a e eturned to operat ve position, the gage hmmwtha g-l n 80 a hwass ge worken b i o n heft a0, but the arrangement v ,ior purposes of cona ws emb g x ,25"and 2 6 are positively train comprising a gear pinion 43 secured to the shaft 44 securedto the

shaft ed oils

2 and 26 are thus positheplaten is rotated in of the gear 41 has prefd1 as the p1aten,,and mes itam circles r h n, Marehkewise preferablyequal i l the feed rolls' 26 and 25, feed rolls to be driven atthe rnighlmbe, efiected vby other argf 'gears The positive 25,;ghy, means,'of the gear train is a positive feed of the c ,arly where the platen is w rk ec l n fingers aroll 51 to bear lr-pieces on the, platen, may the carriage 8 to tally to inoperative 'tion.

,th vzork to be positioned on laten feedrolls 16 are Yfljl'fill by depressin the key 5his swung to t e left to ed lls'25, 26. The work Mpositioned, with the edges of the sheets are M 1 8 8 s' 3 e "sheets ,with,relation to the e v, a 1 many shae s mv e u y, 1f sud have 9 horizontal mlmgs o h to hexreason, it is unneces- B, al law,- omhe vance roll s employed iorwfeedmg the efloottom rolls 15, 16, are

ac, sheets .upwardly beyond Blit if Sheets in the pack d roll 15.

; and the advance rolls 25, 26, are

,itheIpIaten axle, an idler I sheetsbelng about tangentlal to the platen rolls, nor arethey curved around theintro as the platen,,although resting on the table 22 it Is advanced during the writing operation, it is, over the table 22 and gripped bythe feed rolls 25, 26. As the tare: a t

a thevrifihmffthe P M 'i9 8 6 m y a fiybi the $1111! m flsfif fr 1 $070 that they the sheets around the platen by holding the sheets thereone depended; upon for the pack of sheets the platen, thr dighout the writing-[of the age. These advance 170113 25, 2,6,]are'so p aoed with relation to the printing line that the sheets standinsubstantially straight positionfrom the printing line to andbeyond the rolls, thestraight and rolls, j that is, the sheets are not curved around the platen to any appreciable extent between the printing line and the ductory side of either roll, and hence it follows that after the'sheetsare onc'e gaged together against the leading ed e 23 and caught in the grip of said ro is 25, 26, they must advance each to the same extent throughout the writing of the page, and hence, at the printing line, each must re ister with all the others throughout sald writing ofthe page, even if, below, the print-., a ing line, they happen to beout of register where they curve around the undersi e of the platen. therefore 'Ster at i the printing linethroughout the ent re writing of the page, the result is secured that all, the carbon impressions, as wellas the ink ribbon impressions, fall accurately; upon the horizontal rulings upon all thesheets.

n 11o withdrawn outofthe path of said sheets.

The platen feed rolls 15, 16 are also restored byhfting the key [17. The work-sheet or sheets may now be ,fed backwardmto the printing line as near as desired to the leadingedge thereof. If the work is withdrawn from the ,feed rolls 2 5, 26 during this backward movement, the platen feed rolls, 15, 16 hold it against displacement, and as tom oithe sheet approaches the printing line,"it' may pass beyond the control of the platen feed roll 15,"but the

rollsv

25,26 are still operative to feed it and enable the writingto be continued tothe bottom of the page oras near the bottom edge/as desired. The rolls 51' in addition to servingthein usual function of card or work-piece holders, may also assist the

rolls

25, 26 in holding sheets closel against the platen after they have passe the'roll 15.

Variations maybe resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: Y

1. The combination with a rotary laten and means cooperating therewith to eed a work-sheet over the platen, of a work-sheetfeeding couple comprising feed rolls at the delivery side 'of the platen to engage the v work-sheet -at a point 'in advance of the 15 printing line, a squaring gage located in advance of said couple and against which the leading edge of the worksheet may be set to square the sheet with reference to the printing line on the platen, a papersupporting and squaring table on which the forward end of the sheet is supported 'while being adjusted to said gage, means to separate said feed rolls to permit said adjustment of the work-sheet, and means to automatically withdraw the squaring gage from the path of the work-sheet when said rolls are brought into gripping engagement with the work-sheet.

2. The combination with a rotary platen and worksheet-feeding means cooperating therewith to advance work-sheets over the platen past the printing line, the printing line being in advance of said feeding means,

of a pair of feed rolls at the delivery side of the'platen, means to separate said rolls to permit the adjustment of the work-sheets therebetween, a gage located beyond said rolls in position to be engaged by the leading edges of the work-sheets, and means to drive said rolls from the platen at the surface speed of the platen and thereby assist in advancing the work-sheets, said rolls op erable to positively feed a work-sheet and maintain it in alinement on the laten' when,

the bottom edge of the -wor -sheet has passed beyond the-said first-mentioned feedmg means, thereby enabling the printing.

to be continued and the alinement of the work-sheet on the platen maintained iintil the printing has reached the bottom of the work-sheet.

' and work-sheet feeding means cooperating 3. The combination with a rotary platen therewith to advance work-sheets over the platen past the printing line, the printing line being in advance of said feeding means, of a pair of feed rolls at the delivery side of the platen, means to drive said rolls from the platen at the surface speed of the platen and thereby assist in advancing the worksheets, saidrolls operable to positively feed a work-sheet and maintain it in alinement on the platen when the bottom edge of the work-sheet has passed beyond the said firstmentioned feeding means, thereby enabling theprinting to be continued and the alinement of the work-sheet on the platen mainbottom of the wor sheet, and a aper-table extending between said feed re s and the platen and on which the work-sheets are supported and guided.-

4. The combination with a-rotary platen and worksheet-feeding means cooperating therewith to advance work-sheets over the platen pastthe printing line the printing line being in advance of said eeding means, of a pair of feed rolls at the delivery side of the platen, means to drive said rolls from the platen at the surface speedhof the platen and thereby assist in advancing the worksheets, said rolls operable to positively feed a work-sheet and maintain it in alinement on the'platen when the bottom edge of the work-sheet has passed beyond the said firstmentioned feeding means, thereby enabling the printing to be continued and the alinement of the work-sheeton the platen main-.

tained until the printing has reached the bottom of the Work-sheet, a pa er-table extending between said feed r'o ls and .the

, tained until the rinting has reached theplaten and on. which the work-sheets are supported and uided, and a squarin age for the leadin ledge of the work-she t rojec'ting past t e surface of the table into the path of the sheet to enable the sheet to be squared with relation to the printing line while the sheet is supported on said table.

5. The combination with a rotary platen and work-sheet-feeding means cooperating therewith to advance work-sheets over the platen past the printing line the printing line'being in advance of said ceding means, ofa pair'of feed'rolls at the delivery side of the platen, means to drive said rolls from the platen at the surface speed of the platen and thereby assist in advancing the worksheets, said rolls operable to positively feed a work-sheet and maintain it in alinement on the platen when the bottom edge of the,

work-sheet has passed beyond the said firstmentioned feeding means, thereby enabling the printing to be continued and the alinement of the work-sheet on the platen maintained until the printing has reached the bottom of the worksheet, a. pa r-table extending between said feed ro ls and the platen and on which the work-sheets are supported and guided, a squaring gage for the leading edge of the work-sheet projecting'past the surface of the table into the path of the sheet to enable the sheet to be squared with relation to the printing line while the sheet is supported on said table,

said feed rolls being located between the squaring gage and the printing line on the platen, the line of contact between said rolls being substantially in the plane of the surface of said table, means for se Mating said rolls to permit adjustment of sheet, and

a connection; between said last-named means and the I lforautomatically throwing the o the; path of thework-sheet when 6 minim brought together to feed the T s work-duet.

6, In'a typewriting machine, the combi- V nation with a rotary platen, of a pair of feed at the delivery side of the platen and segsarated therefrom, and worksheet-feeding r running onthe laten at the opposite side of the me from said pair of feed rolls and coiiperating with the platen to vfeed the work-sheets past the prmting line, said pair of rolls 0 era-ble to hold the worksheets squared tot e platen and feed them over the platen at the surface speed of "the platen as the sheet is advanced beyond the feed rolls on the platen, and so mounted with relation to each other and to the platen thatthe sheets may extend in substantially straight condition from the print- 7. In a typewriting machine, the combination with. a rotary platen, of a pair of feed rolls at, the delivery side of the platen, work-sheet feeding means'at the opposite M side of the printing line from said feed rolls i l 80 and cooperating with the platen to feed work-sheets past the printing line, said feed rolls operable to hold a work-sheet in alinement onthe platen, and to feed the .worksheet over the platen after the bottom edge '85 of the sheet-has passed, beyond said feeding means, a s uarin ge for'the leading edge of the wo k shei l dcated beyond said pair of rolls, and means for. separating said rolls p to permit a sheet to be squared by said gage 40 while positioned between, said rolls.

8; The combination with a rotary platen,

of a feeding couple located at the delivery side of the platemmeans to direct the leading end ofa work-sheet to said couple as it 'is'advanced beyond the vprintingline, and agear train comprising a'gear on the couple and a gear connecte to rotate with the platen, thegear train forming a means for v positively driving said feeding couple at the surface of the platen when the platen is driven. A

a 9. In a'typewriting machine, the combination with a rotary platen, of means at the delivery side of theplaten and separate f therefromfor line-feeding a work-sheet, said means comprising a feed roll to run on the outer face ofthe ,work-sheet, means to direct the leading edge of the work-sheet tosaid i a .p a, feed roll as it'is advanced beyond the platen, 7 and means for positively driving said roll from theplaten at the surface speed of the v 10. The comhinati of a pair of feed rolls at the delivery side n with a rotary platen,

i 35 of the platen for line-feedinga work-sheet support the leading end of the work-sheet to support and guide the leadin the said platen feed rolls.

thereover, means for positively driving. said rollsfrom the platen at the surface speed of the platen, and a table extending between the platen and the feed rolls in position to a as it is advanced beyond the printing line and direct it to the b1te of said rolls.

11'. In a front-strike. writing machine, the combination with a rotatable platen having its printing line alo the front face thereof, of platenfeed ro ls running on the un-' der surface of the platen, a work-sheetsupporting table extending upwardly and rearwardlyfrom the platen 'in advance of the printing line, and a pair of feed rolls havingtheir line of contact subtsantially in alinement with the "surface of said table, a portion of said table extendingbetween the platen and said rolls and forming avmeans I end of a work-sheet from the platen tosai rolls, and said rolls' forming means for positively feeding the work-sheet and hold1n it in alinement on the platen after the ottom edge of the work-sheet has passed beyond 12. In afrontstrike writing machine, the combination with a rotatable platen having its printing'line along the front face thereof, of platen feed rolls running on the under surface of the platen, a work-sheetsupporting table extendingupwardly and .rearwardly from the platen in advance of the printing line, a pair of feed rolls having "their line of contact substantially in alinement with the surface of said :table, said table forming a means to so port and guide the leadin end of a work-s eet from the platen to said rolls, and said rolls forming means for positively feeding the worksheet and holding it in alinement on the platen after .thevbottom edge of the worksheet has passed beyond thesaid platen feed rolls, a squaring gage projecting forward beyond the surface of said table into the path of the work-sheet, means for separatingwsaid feed rolls to permit the work-sheet to be placed therebetween and squared by said gage, and means controlled by said feed roll-separating means for withdrawing the gage from the path of the work-sheet when the rolls arebrought together, and restoring the gage to operative position when the rolls are separated.

13. In a front-strike typewriting machine, the combination of a roller platen, a worksheet supporting table extending upwardly and rearwardly from the platen at the delivery side thereof, a worksheet feedin roll overlying said table and parallel wit the platen to engage the surface of the Work-Sheet v e ia the; .nPP-sr a lower edges of said table, shamans; operating with said roll for feeding a work-w 14. In a front-strike typewritingmachine, the combination of a roller platen, a worksheet supporting table extending upwardly for lifting said feeding roll from the table.

I to permit'the work-sheet to be adjusted and its ed e set to said gage.

15. n a front-strike typewriting machine, the combination with a rotatable platen, of a work-sheet supporting table extending upwardly and rearwardly from the platen at the delivery side thereof,a work-sheet feeding couple comprising one member overlying said table parallel with the platen in position to engage the upper surface of a work-sheet on said table along a line intermediate the upper and lower edges of said table, the table being provided with an opening or openings beneath said member, the other member of the couple being located beneath the table and projecting through said 0 ning or openings to cooperate with' the rst-.

ip the mentioned member of the couple to Work-sheet and feed it over the ta 1e, and means for driving said couple from. the platen at the surface speed of the platen.

16. In a front-strike typewriting machine, the combination with a rotatable laten, of a work-sheet supporting and guiding table extending upwardly and rearward] from the platen at the delivery side thereo a feed roll overlying the table and extending parallel with the platen in position to enga e the upper surface. of a work-sheet on said table, the table being provided with an opening beneath said roll, a second feed roll beneath the table and projecting through said opening to cooperate with the first-mentioned roll to grip the work-sheet, line-space mechanism to rotate the platen, and means operated b the line-space mechanism to rotate said eed rolls at the surface speed of the platen when the line-space mechanismis operated.

17. r In a front-strike typewriting machine, the combination with a rotary p aten, of a work-sheet supportin table extending .upwardly and rearward y from the platen at the delivery side thereof, a work-sheet feeding couple comprising rolls located above and beneath said table respectively, the table provided with openings along the line of contact between said rolls to permit the rolls to grip the work-sheet, a shaft on which the upper rolls are mounted, eccentric bearings is mounted, an

separated, from the platen for advancin for withdrawingsaid gage from the-path- 'of the work-sheet when the upper rolls are moved to operative position and for pro jecting said gage iinto operative position when the rolls are separated 18. The combination with a rotary platen and line-spacing means therefor, of means separated from. the platen for advancing sheets around the same during the rotation thereof, said feeding means comprising a pair of cooperating rolls extending along the platenfor gripping andadvancing the 1 sheet, said rolls capable of separation, to permit adjustment of a sheet or sheets therebetween, a gage positioned in advance of the printing line against which the sheets may be squared while between the separated rolls,

and gearing between said line-spacing means and said feedin rolls.

19. The comblnation with a rotary laten, of means separated from the platen fbr advancing sheets around the same during the rotation thereof, said feeding means comprising a pair of cooperating rolls extending along the platen and capable of separation, agage positioned to gage a sheet while the latter is between the separated rolls, a

n which one of said rolls gearing between said driving shaft and the platen, inclusive of a pinion on said shaft, and also inclusive of a gear on'the platen.

20. The combination with a rotary platen and line-spacing means therefor, of means a. sheet around the same during the rotation thereof, said sheet-advancing means comprising a pair of cooperating rolls extending alo the platen forgripping and advancing, 18 516813, toothed gearin between said linespacing means and said ceding rolls, means to effect separation of said feeding rolls, a

driving shaft u gage in position to square the sheets on the platen and bring their leading edges inreglater while the sheets are positioned between the separated feed rolls, and means to withdraw the ga brought toget er to grip the sheet.

21; In a typewritmg machine, the combination with a rotary p aten and line-spacing mechanism, of a pair of feed rolls at the delive side of the platen, saidfeed rolls operab e to hold a work-sheet in alinement on the platen, gearin between the line-spacing mechanism and ing the latter to line-feed the work-sheet over the laten, a squarin ga e for the leading edge of the work-s eet ocated beyond said pair of rolls, and means for sepa- 13o when said feed rolls are e feed rolls for operatlower edges of the table.

t ed es of the table" ro away from the plane of the table to permit adjustment of the work-sheet be rating said rolls to permit a sheet to be squared by said gage while positioned between said rolls. 4

22. In a typewriting machine, the combination with a rotary platen, of a pair of feed rolls at the delivery side of the platen, said rolls operable to hold the work-sheets in registerat the printing line on the platen and feed them past the printing line, the path of the sheets from the printing line to the rolls being about straight, a squaring gage for the leading edges'of the work- 'sheets located beyond said -rolls, said rolls separable to permit the work-sheets to be a. justed to the gage while positioned be- ,tween said rolls, and means to hold said rolls separated during said adjustment of the sheets.

23. In a front strike typewriting machine, the combination of a roller platen, a worksheet-supporting table extending upwardly" and rearwardly from the platen at the de-, livery side thereof, and a worksheet-feeding roll parallel with the platen and overlyin said table to engage the upper surface o the work-sheet intermediate the upper and 24. In a front-strike typewriting machine, the combination of a roller platen, a worksheet-supporting table extend ng upwardlv and rearwardly from the platen'at the delivery side thereof, a worksheet-folding roll a parallel with the platen and overlying said table to engage the upper surface of the work-sheet intermediate the upper and lower and means to shift said tweensaid roll and table.

25. .In a front-strike typewriting machine, the'combination of a rol er platen, a worki sheet-supporting table extending upwardly and rearwardly from the platen at the'd'eliver side thereof, a work-sheet-feeding roll para el with the laten and overlying said "table to engage t e upper surface of the work-sheet intermediate the upper and lower means to drive saidroll at the surface edges of the table, means to rotate the platen,

speed of the platen when said platen-rotating means is operated.

26. In a front-strike typewriting machine,

the combination with a rotary platen, of, a

Worksheet-feeding couple ,comprlsing rolls extending parallel with the platenand separated therefrom, a shaft on which one of the rolls is mounted, said shaft having eccentric hearings in the platen frame, means to r0-' tate said shaft to separate said rolls, a age in advance of said rolls to which the lea ing edge ofthe work-sheet may be adjusted to square the sheet on the platen, and means for withdrawing said gage from the path of the work-sheet when the rolls are brou ht to sheet-holding position and for projecting said gage into operative rolls are separated.

27. In a typewriting machine, the combination of a platen, a worksheet-feeding couple in advance of the printing line at the worksheets, also inadvance of the printing line, and means to operate said couple, to feed sheetspast the printing line, the path of the sheets between the printing line and said couple being about straight, whereby the sheets are retained in accurate register at the printing line.

28. In a typewriting machine, the combination of a platen, a work-sheet-feeding cou-' ple'in advance of the rinting line at the platen, a g'agefor the eading edges of the work-sheets, alsoin advance of the printin line, means to operate said cou le to 'fee sheets past the printing line, t e path of the sheets between the 'printing hue and said couplebeing about straight, whereby the sheets are retained in accurate register at the printingline, feed rolls running on the platen, means to cast said feed rolls off the position when the platen, a gage for the leading edges of the a platen, and means'to separate themembers of, said feeding couple independently of the means for casting ofi'the platen feed rolls.

FREDERICK A. HART;

Witnesses: l a W. 0. Wns'rrrmn,

J ULIUS' Docxs'nnn.