US1883902A - Typewriting machine - Google Patents

Description

Oct. 25, 1932. F. A HART TYPEWRITING MACHINE Filed March 4 1927 4 Sheets-Sheet 1 INVENTOR 5 E N W W yLLlfl/L/ A TTORNEY Qat. 25, 1932. F. A. HART TYPEWRITING MACHINE Filed March 4. 1927 4 Sheets-Sheet 2 INVENTOR ATTORNEY \NFFNESEEEE I Get. 25', 1932.

F. A. HART TYPEWRITING momma 4 Sheets-Sheet 3 Filed March 4, 1927 WITNESSES I ATTORNEY Oct. 25, 1932. F. A. HART TYPEWRITING MACHINE Filed March 4. 1927 4 Sheets-Sheet 4 E m m m 0 v n m A WITN ES 5 E5 21% Patented Oct. 25, I932 UITED STATES.

PATENT Q FFI CE FB EDEBICK A. HART, OF NEW BRITAIN,

CONNECTICUT, ASSIGNOR T REMINGTON TTYPE- WRITER COMPANY, OF ILION, NEW YORK, A'CORPORATION OF NEW YORK 7 TYPEWRITING-MACHINE Application filed March 4,

My invention relates to typewriting machines, and more particularly to work sheet controlling means by which work sheets may be. quickly, and successively, introduced and '5 accurately positioned in the machine.

More specifically considered, my invention relates to paper guiding, end stop and holding devices by which work sheets successively introduced rearwardly from the front of and beneath the. platen may be quickly and accurately positioned, and whereby one ofsaid sheets may be held against accidental displacement while another sheet is being introduced in position.

The main objects of 'the invention, generallystated, are to provide improved and comparatively simple devices of the character specified, which are in thenature of attachments that may be readily incorporated in 0 existing machines without modifying, or materiallymodifying, the" existing structural features thereof, and which when-desired may be readily detached from the machine as a single unit. A further object of'my'invention is to provide devices of the character specified which are highly e-flicient in use and with the aid of which work sheets may be readily and accurately positioned undervary ing conditions of use and to provide against an accidental displacement of one sheet in the machine as another is being introduced into the machine relatively thereto.

To the above and other ends which will hereinafter appear my invention consists in the features of construction,- arrangements of parts and combination of devices to be set forth in the following description and particularly pointed out in the appended claims.

In the accompanying drawings wherein 0 like reference characters indicate corresponding parts in the different views:

Figure 1 is a fore and aft vertical sectional view of a typewriting machine equipped with the devices of my invention,

5 the section being taken on the line 11 of Fig. 6 and looking in the direction-of the arrows at said line.

Figure 2 is a detail fragmentary perspec tive view of thedouble paper apron or deflectors beneath the platen.

1927. Serial N0.'172,685.

Figure 3 is a view corresponding in part to Fig. 1 but showing a somewhat'diiferent arrangement or adjustment and use of certain of the devices of the present construction.

Figure 4 is a detail, fragmentary, perspective view of one of the holding and guide springs andsome of the associated parts.

Figure 5 is a, detail view showing the means for adjustably connecting one of the supporting brackets forthe paper table in place, the view being in the nature of afragmentarysection taken on the line-55 of Fig. 1 and looking in the direction of the arrows at said line.

Figure 6 is a front elevation with broken away of the carriage equipped'with the devices of my invention.

Figure 7 is an enlarged'detail fragmentary perspective view showing in part the adjusting means for the end stop bar and the means for locking the bar in its adjusted position. 7

Figure 8'is a fore and aft vertical sectional View corresponding in partto Fig. 1, but showing a different position of adjustment of the stop bar 61 and the parts carried thereby and illustrating certain additional devices not shown in the preceding views.

Figure 9 is a detail, fragmentary, front view,-partly in section, showingsome of the parts represented in F ig. 8.

Figure 10 is a detail, transverse, sectional view taken on the line 10-10 of lookingin the direction of the arrows at said line.

Figure 11 is an enlarged detail, fragmentary, transverse, sectional view taken on the line 11-11 of Fig. 9 and looking in the di-- rection of the arrows at said line.

The present invention has some of the same general objects in view as the construction disclosed V Burns filed July 13,1926, Ser. No. 122,239 (no y; Patent No. 1,647,854 granted Nov. 1, 192 on the construction disclosed insaid applica tion.

The devices of the present invention were devised more especially for use in the Rem- Fig. 9 and in the application of'Clovd E.

and is in the nature of improvements parts typewriting and like machines wherever found available.

In the accompanying drawings 1' have shown only so much of the said Remington machine as is necessary to arrive at an understanding of my inventlon in its embodiment therein.

- Generally stated, the Remingtonmachines above referred to are employed in various kinds of billing operations, where two or morework sheets are machine and printed at a single operation.

However, I do not deem it necessary to describe specifically the many different forms of billing operations in which the said machines maybe used. It is sufficient for an understanding of the present invention to describe in general terms one mode of billing that may be successfully carried out with the aid of said machines and perhaps briefly refer to some of the various other methods in connection with which the machines may be employed together with the paper end sto and other devices of. my invention. I

- ;;(5ne method of using the said machine which will be specifically referred to, is its employment, forexample, by a public service corporation such, as, an electric or gas "light company, for simultaneously, or at one writing, making out a bill, making corresponding entries on the ledger sheet carrying the account, andon a record or register sheet which receives the entries written on all of the individual bill and ledger sheets.

. In the example referred to the register sheet and its accompanying carbon sheet remain in the machine. The ledger sheet which usually requires but a single cross line entry at a time, say, for the month for which the entry isrmade, maybe in the nature of a blank with different vertically ruled columns to I be filled in under appropriate printed headings;'each cross line of the sheet being ruled off horizontally and given over to a different month, and the entire sheet covering a period of anywhere from, say, eighteen to thirty-six months. Means are provided to enable each ledger sheet to be quickly introduced backwardly from in front of the platen 1 and properly positioned to receivethe requisite entries in the line allotted for the month in question without disturbing the previous ly' introduced provided for then quickly enteringfa "bill sheet and accompanymgcarbon sheet reare wardly into the machine from in front of useful in the machine reto be correlated in the.

register sheet. Means also arei the platen, and accurately positioning them in proper correlation with the previously introduced ledger sheet and the printing line. The entries may then be made on a bill sheet and these will be. transferred through interposed carbon sheets to the ledger and register sheets. made on the ledger sheet which are not to appear on the bill or register sheet. The bill and ledger sheets and accompanying carbon sheet are then rapidly withdrawn from the machine without disturbing the register sheet, and another ledger sheet and a bill sheet with accompanying carbon sheet may then bequickly introduced as before, and so In the example of the billing operations explained abovethe end stops and clamping If desired additional entries may be springs of my present invention are intended ,to coact with the ledger sheet, to

uickly and accurately efiect a positioning t ereof under varying conditions and hold it against accidental displacement from its adjusted position. It should be understood, however, that in other uses of the machine, the said stop devices. of my invention will coact with other sheets in'a variety of ways, some of which will be hereinafter explained.

, With the for-egoinggeneral explanation, I

will now proceed to briefly describeso much of the said machine as ,is necessary to arrive at an understanding of my invention in its embodiment therein.

" The frame of the machine is of the usual construction and includes a top plate 1 carrying fixed guide rails 52 (only one of which is shown), oppos'tely grooved to receive cross anti-friction bearing rollers 3. These rollers are also'received in oppositely grooved carriage rails 4 at the front and rear of the car riage, .(the rear carriage rail only being shown), said carriage rails being connected with the endbars 5 of the carriage. I

The carriage, which is power driven in the usual manner, is thus supported and mount ed to travel from side to side of the machine over the top plate under control of the usual escapement mechanism (notshown), and in some instances under control of the usual tab-, ulator mechanism.

The platen 7 is carried by the platen frame in the usual manner, said platen frame com v prising end plates 8 and .9 united by suitable cross bars.

to the carriage or truck by links 10in the usual manner, which links ordinarily guide the platenframe in its case shifting movements. The present. machine, however, is intended to write only with capital letters or uppercase characters and there is therefore, nocase shiftingmovements of the platen and platen frame; the platen frame being firmly heldin its upper case riage, where it will coact with the outermost types 11 on the type bars 12. These type bars The platen frame isconnected' position on the' carunderstood, however,

prior application, there are two these deflectors beneath the spacing members 17 and 18, both of which may constitute side edge guides On the other hand, the

' ineffective position,

7 againstthe front face of the platen.

The usual ribbon vibrator mechanism is employed so as to interpose the ribbon in the path of the types 11 at each actuation of a type bar. Only the upper end portion of the ribbon vibrator 13 is shown, it being that the vibrator is guided for up and down movement on the type guide 14 in the usual manner.

s in the construction disclosed in my said curved paper deflectors 15 and 16 employed beneath the platen, one arranged above the other and maintained spaced. apart by intermediate spacing members or blocks 17 and 18 located near the endsthereof. Generally speaking, the platen conform substantially to the curvature of the latter, or are substantially concentric therewith, and extend substantially throughout the length of the platen. As thus constructed there are two separate channels provided, one of H'l11Cl1 is the open channel 19'between the two deflectors, and which is bounded at its ends by either or or gages for cooperation with one or both side edges of a worksheet or sheets introduced into the channel 19. The other separated channel :20 is provided between the under surface of the platen and the upper deflector 15. It will be seen that the forwarc edge of the deflector 16terminates in advance of the forward edge of the deflector 15. The deflector 16 is continued up at the rear and terminates at 21 at a considerable height above the platen thus forming a paper table. deflector 15 terminates in the rear of the platen at a much lower point and below the top of the platen, where it is bent to form a loop 22 that surrounds a rod 23 fixedly connected at its ends to the end plates 8 and 9 of the platen frame. In this manner the rigidly united deflectors 15 and 16, together with all of the parts carried thereby, are mounted on the rod 23. The construction is such that the deflector 15, is lightlypressed against the platen, or against the interposed sheets R, R. In this manner the sheets R, R, are held snugly against the platen and other sheets including the sheet L, intended to be introduced rearwardly into the channel 19 are prevented from entering the channel 20.

In order to facilitate the backward introduction of work sheets into the channel 19 from in front of the platen there is provided in accordance with the invention disclosed in my prior application, a guide, shield, or paper deflector '24 that is movable ont-he from a substantially horizontally disposed shown in dotted lines in Fig.

carriage 1, to a downwardly and rearwardl-yinclined effective position, shown in full lines in said figure and vice versa.

The deflector 24 has depending arms 25 at the ends thereof, each of said arms being pivoted at 26 on an end plate 8 or 9 of the-platen frame. In this manner the deflector 24'is mounted for pivotal movement from the-ineffective dotted line position, shown in Fig. 1, where it is out of the paths of the types, to the full line position where it crosses the print-- ing line and extends in the paths of the types. In this last mentioned position the deflector overlaps the forward edge of the deflector '16 and forms virtually a continuation of the channel 19 to aid in quickly and effectively introducing work sheets backwardly beneath the platen into the channel 19. i

It is unnecessary, for the purpose-of the present invention, to disclose the means by which this deflector 24 is'actuated and by which the fine wire line indicator 27 is automatically shifted from the effective, to the ineffective position in Fig. 1, when the deflector 24: is shifted from the dotted to the full-line position and vice versa. It also is unnecessary to disclose herein the means by which these devices are automatically controlled by a shifting of certain of the feed rollers 28 and 29 from the ineffective position shown in Fig.

from ineffective to effective position, thus givlng ample clearance between said deflector and vibrator. All of such means are embodied in said hereinbefore mentioned Remv ington machines.

It will sufiice for the purpose of arriving at a better understanding of this invention, in its present embodiment, to bear in mind that the parts referred manner indicated above.

As disclosed in said previously filed appli cations a set of feed rollers 30 coact only with the work sheet R and its carbon sheet R. whereas one or rollers 28 and 29 are employed, depending on the use of the machine as a so-called twosheet biller, or for more than two work sheets. The specific manner of mounting these feed rollers for shifting movement into and out of cooperation with the work sheets with which they coact is disclosed in the here inbefore referred to Remington machine and need not be specifically described herein.

In accordance with the present invention through the channel 19, as well as certain holding devices, are supported on a detachablymounted auxiliary paper table. These to the full line position in Fig. 1 when the deflector 24 is moved to operate in the general I more additional sets of feed 7 i .at its threaded devices of the present invention and the manner of mounting and adjusting them will now be described.

The detachably mounted auxiliary paper table is designated as a whole by the reference numeral 31 and is provided wlth backwardly extending flanges 32 at The lower edge 33 the side edges thereof. 7 .of the paper table is adapted to fit in a depression 34 extending throughoutthe length of the upwardly directed .rearextension of the deflector 16 formed by off-setting rearwardly the upper portion of said extension. This enables the front face of the paper table to form a continuation of the contact face ofthe deflector 16.

The lower side edge portions of the paper table are adapted to be received'between the parallel walls of slots 35 (see Fig. 2) formed between theupper ends of the spacing blocks 17 and 18 and the rearwardly ofl-set extension of the deflector 16.

I Means are provided for adjustably and de tachably securing the carriage in the position indicated.

table, as will presently arm of each bracket 36 arcuate slot 39, the center tially coincident with. the bottom edge 33 o the paper table. This is in order to afford a slight.foreand aft adjustment of the paper table around said lower edge as a center and thereby enable positioned with reference to the other associated parts.

A clamping Washer 40 bears on the slotted arm of the associated bracket and is held clamped thereto by a headed clamping screw 41. The stem of each screw 41 passes through its slot 39 and is received at its threaded end in a tapped opening in the upright arm 42 of an angle bracket. Each angle bracket has afoot piece 43 slotted transversely of the machine, as indicated at 44 in Fig. 5. A clamping washer 45 bears against.

the upper fact of each foot piece 43 and is held in'clamping engagement therewith by a nut 46. These nuts are threaded on bolts 47 and by which nuts and bolts the tabulator stop rod 48 ordinarily issecured to the rear wardly extending bracket arms 49 on thecarriage} It will be seen that this manner of securing the brackets 42 13 in place enables each of them to be adjusted transversely o the machine to accord with the particular machine to which thepaper tableis to be One arm of each of said brackthe paper table to be properly of the paper table and be held applied, and yet provides for a ready removal of the paper table together with the parts carried thereby as a single unit, when desired.

The paper table carries paper and stops, guides and holding devices as will now be described.

Angie brackets 50 (preferably two in num- I her) are detachably secured byscrew bolts and nuts 51 and 52 respectively to the upper rear side of the paper table and project over the upper edge thereof where they provide 7 foot pieces 53 above and forward of the front' face of the paper table. To each of said foot pieces issecured by screws 54 a depending paper guiding member or bar 55 which extends parallel with the front face of thepaper table and terminates at its lower end before it reaches the looped part 22 ofthe paper deflector 15. There are preferably two of these guide bars and they may be arranged at suitable points along the paper table and I prefer to make them adjustable lengthwise of the table to different positions depending on the character of the work to be done on the machine. Any suitable means may be provided for this purpose. However, it has been found that the provision of two or more sets of openings 56 in the paper table (see Fig. 6) for the reception of the screw bolts 51will d ordinarily suiiiceto attain the desired results.

lhis enables each of the supporting brackets 50 and the guide bar carried thereby tobe adjusted to two or more positions along the 1 paper table and to be spaced apart at the requisite distances.

It will be seen that the space 57 between each guide bar 55 and the paper table constitutes a continuation of the channel 19 bef tween the two paper deflectors 15 and 16 so that paper introduced backwardly into said channel will pass up between said guide bars and the paper table.

In order to aid in thus guidingthe pa er, and at the same time cause it to hug'the ace on the table against accidental displacement, I provide each guide bar with spring means which coact with a work s ieet introduced as described through the channel 19. In the. present instance such means comprisesa bent leafspring 58'securedat one end, as at 59, tot-he top side of the associated guide bar. Each spring curves around the lower end of its'bar andextends within the outlet of the channel 19, as shown, to provide a curved contactor deflecting face 60. 'Each spring tinues upwardly and rearwardly in the space I 57 between the associated guide bar and paper table, the free end of the spring bearing against the bar to. It will be seen of each spring slopes towards and makes conf tact with the paper table so as to direct the rear end of-the paper beneath the spring and against the paper table and cause the paper then conor being arranged closethere that the contactface 60 it will not extend'past to be pressed with a light pressure against the face of the paper table. This pressure is insufficient to prevent the comparatively heavy ledger sheet from being introduced rearwardly past the springs but is sufiicient to hold the ledger sheet against accidental displacement from its adjusted positionwhen another lighter bill sheet is subsequently introduced in the channel 19. Usually this lighter weight bill sheet is of such depth that the springs 58 when positioned to receive the first line of writing. However, even when the narrower bill sheet is of a depth that carries it beyond the springs 58, if the guide bars 55 are beyond the side edges of the bill sheet, then the latter'may be introduced rearwardly in the channel'19 without being interfered with by the springs 58 which coact only with the wider ledger sheet.

In the present construction I have provided novel paper end-stop devices to coact with the ledger sheet which are carried by and are detachable with the paper table and which I will now describe.

A bar 61 of such a thickness that it does not quite fill the space between each guide bar 55 and the paper table passes through such spaces and extends longitudinally of the platen and from end toend of the paper table parallel with the printing line. This bar constitutes an end stop for the rear edge of the ledger sheet L and is mounted and adj usted towards and from the platen on the paper table in the following manner. Referring more particularly to'FigQ? it will be seen that an angular guide plate 62 is secured by screws 63 to the left-hand end of the stop bar 61 outside of a rack bar 64 riveted at 65, or otherwise secured to a side flange tends back of the associated rack bar 64, thus providing a sliding connection between the stop bar 61 and the paper table. The guide plate 62 is apertured to providea bearing for a. shaft '67. A pinion 68 is fixed on this shaft and meshes with the companion rack bar 64 on the paper table. One end of the shaft 67 is extended at 69 beyond its bearing inthe guide plate where it is threaded to coact with a thumb nut 70. The hub of this nut bears against a washer 71 interposed between the hub and the outside of the guide plate 62. The thumb nut when tightened acts as a binding nut to lock the shaft 67 against rotaion. On the other hand, when the thumb nut is loosened the shaft is free to be turner The opposite end of the shaft 67 is mounted in a like manner in shown in Fig. 6, and carries a second pinion 3 that meshes with a. second rack bar 74: secured to the paper table in the same manner as the rack bar 64. To this end of the shaft 67 is secured a knurled head or finger piece 7 5 by which the shaft maybe turned when the nut 70 is loose. From the foregoing it 32 on the paper table.v The rear angular end 66 of the bracket eX- a second guide plate 72-, as.

will be understood that the shaft 67 is mounted to travel with the stop bar 61 in the adjustment of the latter and that a turning movement of the finger piece will turn the shaft, if it is free, thereby causing the pinions 68 and 7 3 to roll along the rack bars 64: and 74"to raise or lower the stop bar, depending on the direction in which the finger piece 7 5 is turned. It will be understood, moreover, that by this construction the bar is always maintained in parallelism with the printing line,'and is always adjustable to a uniform extent at both ends of the bar and that the latter cannot become cramped or stick in its sliding movement of adjustment. When the desired position of adjustment is attained the thumb screw 70 may be tightened and the stop bar will be held firmly in its adjusted position. The upward adjustment of the bar is limited by the pinions 68 and 73 engaging enlarged terminal teeth '76 of the racks 64 and 74: preventing further rotation of'the shaft 67 in one direction. The stopbar 61 has a limited downward range of adjustment determined in alike manner by the pinions engagingthe full body portions 77 (see Fig. and preventing further rotation of the shaft 67 This point is reached before the stop bar reaches the springs 58. I

It is sometimes desirable, as whcn'filling in entries near the bottom ends of the ledger sheets, to provide end stops which will reach beyond the range of downward adjustment of the-stop bar 61. In order to provide for such a contingency I employ auxiliary end stops somewhat similar to some of those disclosed'in the hereinbefore mentioned Burns application, except that in the present construction I employ releasable means by which said sto s may be held firmly against accidental isplacement from the effective position and also from the inefiective position. Thus, flexible metal arms 78, preferably two innumber, are mounted for pivotal movement from an ineffective position on top of the stop bar 61, as shown in full lines in Fig. 6, to an effective position shown in dotted lines. Each of these flexible arms is mountedto turn around the stem of a headed'bindingscrew 79 threaded into the stop bar 61, with a-binding washer 80 interposed between the head of the screw and the associated flexible arm. 'VVhen the screws are loosened the arms may be turned from ineffective to effective positions or vice versa, and a tightening of the screws will firmly clamp the'arms against accidental displacement from the positions to which they may be turned. The free end of each flexible arm carries an enlargement 81 of a thickness corresponding substantially to the width of the space between the two walls of the channel 19 and which constitutes an end the bottom end of a work sheet introduced in the channel 19 may be adjusted, as indistop against which cated in Fig. 3.- It will be understood that when the arms 7 8 are turned to sition and the stop bar is adjusted down, say,

to the Fig. 3 positiorn the flexibility of the act with the bottomedge of a arms 78 will enablethem to bend around the platen and carry the stops 81in a curvilinear path along the channel 19. In, this manner the stops 81 may be brought into use to cowork sheet L when said edge is within the channel 19 and beyond the range of adjustment of the stop bar 61. I

The stems of the screws 38 hereinbefore referred to may extend through openings in.

the flanges 32 on the paper stable and take into tapped openings in the rack bars 64 and 74 riveted to said fianges,thus providing a firm connection for the supporting brackets i 36 with the paper table.

' In the present example, assume that the ledger sheetsL are in the nature of printed blanks with separate spaces for various entries thereon, some at least of which are writ- 3 ten thereon through an interposed carbon sheet R,-or in some instances each bill sheet .may have a carbonized back which would months of the year, or

will be as j' 61 will be accurately the line indicator 27 if justed as cesively introduced ledger sheets answer the same purpose. Also assume that each ledger sheet has printed thereon the the months of more If,for example, the entries top of each ledger than one year. are to be made near the sheet in an appropriate monthv of,-say, January, then the operation follows: The first ledger L is introduced rearwardly, as previously described, and accurately positioned with reference to a line finder or indicator 27.

. this position has been attained the sheet will be held against accidental displacement by and the end stop 61 is adjusted on for succeeding months.

' is withinthe channel 19 when properly po-. sitioned to receive'such entries,

adjustment oftheend stop As entries reach the lower end portion of each ledger sheet L, the lower end thereof and each of therefore out of the range of 61. At this time the arms 78 may be swung-down into position at rightanglesto the bar 61, thus brings ingfthe end stops'81 into efl eciive position in advance of the end stop 61. An adjustsuch sheets is ment of the bar 61 towards or away from the platen is effective at this time to adjust eifective pocross line for the l/Vhen entries are to be.

andthe stop 61 is adandaccurately introduced to propthe end stops 81 along the channel 19 and inacurved path around the platen, as shownin Fig. 3, until the stops coact with thebottomedge of the first ledger sheet L previously positioned with theaid of the line indicator27. a 7

In this manner entries may be made at as low a pointon each ledger sheet as is required, it being understood that a single adjustment of the stops 81 suilices for enter ng bills during a given month and that the stops 81 operatein the same general manner, and

for the same purpose as theend'stop 61, but

are brought into use when the stop 61 is no longer available to coact with ledger sheets. In Figs. 8 to 11 inclusive, I have illustrated certain additional features not disclosed in he remaining figures, but which additional features I prefer in practice to employ 1n conjunction with those represented inFigs. 1 to 7, as will now appear.

to leave some space between the 55 and the stop bar 61 in order bindagainst the or interfere with bar. This slight guide bar 55 and I prefer guide bars that the former will not latter and possibly retard the adjustment of the stop space or gap between each the stop bar 61, is In practice it sometimes occurs that the bottom edge of a work sheet introduced into the channel 19 will pass up between the stop bar 61 and the overlying guide bars 55 and not be arrested against the lower edge of the stop bar 61, as it should be. In order to overcome this difliculty I detachably connect to the top sidefof the stop bar, with the aid of screws 83, .twOspaceclosing blocks or hers 81 preferably of a thickness which will bring the top feces of the blocks 84 substantially in alignment with the top sides of the guide bars. One of these blocks 84 is located close to and outside of each of the guide bars 55, thus crossing the slight intervening spaces 82 and forming upstanding end-stops on the bar 61 which prevent the work entering said intervening spaces 82. The bottom'edge of the sheet will therefore be efiectively arrested against the bottom edge of the 'stop bar or the blocks 84 carried thereby.

I have provided two additional sets of tapped openings 85 in the stop bar, one set located near-each end thereof. This is in Order SP Q-ClOsing blocks 84; may be times such that the bottom edges of such sheet when properly positioned, will be below the range of adjustment of the stop bar 61, but

will rest on the paper table and. notbe within the channel 19. Such a condition is repreindicated at 82 in Fig. 10.

through the gaps 82 auxiliary end-stop memsheet from r full to ible arm 78 and hole sented in Fig. 8. From a consideration of this view it will be understood that each of the flexible arms "78 is supported in a fiat condition onthe paper table. The flexibility of the arms at this time may enable the end stops 81 carried thereby to be deflected away from the pa per table by a comparatively stitl work sheet, so that the steps will be ineiiective to properly arrest and gage the work sheet. In order to overcome this ditiiculty I employ two comparatively heavy reinforcing leaf-springs or retaining members 86, each mounted for pivotal movement from the the dotted line positions in Fig. 9 d binding screw 7 8 when Each reinforcing arounc the associate the latter is loosened. spring 86 n in the effective full. line position bears down a ainst the associated fie):- s it firmly against the paper table where the bottom edge of a work sheet will be arrested by the stop 81, and the latter will be firmly held against accidental displacement bv the worl best. It will 1 be understood that the retaiing members or 1 ng in the remainir Ithe retaining springs 86 bro ter of billing springs 86 are not, and cannot be, empl yed when the flexible arms 78 are in the channel 19 and assume a bent condition. hloreover, the springsSG are not employed when the stop bar 61 is used to coact directly with work sheets. At such times the spri 0s 86 may be turned to the inefiective position overlying and parallel with the stop bar 61, as indicated in dotted lines in F 9, whether the I flexible arms 78 be in the cfiective or ineffective positions. a I s 86 may be held in ineffective dotted l e position, or in the eficctive position shown in fuli lines, by

tightening the binding screws 79 which act j effectively on the retai sprin s 86 as well as on the flexible arms 7 It is believed that the representation of the and the retaining spri s t), 10 and 11 will. avoid spacing biocks 8% r 8d only in 8, ntusion i n the showures and contribute to a'clearer Ulhlfi?" nding of the construction, inasmuch as it is only when each of the end stops 81 is adjusted to some such positions that represented in Figs. 8 and 9 that ht into use. It should be understood, hows? or. that I prefer to employ these additional devices in connection with those shown in Figs. 1 to 7, as hereinbefore indicated.

hen the blocks 8% and springs 86 are ployed, the flexible arms will be turned inward and upward from effective to ineiieetive position, indicated in 9, instead of outward and upward to ineffective posij tion, as in 6.

I have hereinbefore indicated that the present machine is capable of a very wide range of use, and may be employed with or without slight change in almost any chars or like worl: wherein two or more sheets are employed, and where one or more work sheets are introduced into and removed from the machine, while an other or other sheets are retained in the ma chine and a certain correlation is required between the sheet or sheets retained in the machine and those introduced therein from time to time. Therefore the end stops may be employed in a variety of ways. 7

For example, let it be supposed that the machine is to be used as a check writing machine, in which a copy is to be made of all checks as they are written. In this event the checks only would be rearwardly introduced into the channel 19, the end stops 81 being advanced to some such position as that indicated in Fig. 3 and permitted to remain in such posit-ion indefinitely. The record of the checks written would be manifolded through the carbon sheet to the record sheet R, both of which latter sheets are fed through the separate channel 20. Inthis event the sheet B would constitute a payroll or register sheet, the use of the stops 81 in check-writing providing for the adjustment of such stops to accord with checks of differentdepths.

Generally speaking, the sheet .R, if used in bookkeepingwork with a ledge sheet, may constitute a so-called register or proof sheet. If used when copying invoices, it may constitute a sales sheet or a distributing sheet. If used in check-Writing it may constitute a pay-roll or register sheet. In each event, however, the sheets R and R remain in the machine while the remaining Work sheets'L andthe bill sheet and accompanying carbon (or'either of them as the case may be) are removed after each writing, and new sheets entered in place thereof with the aid of the stopandclamping devices of my invention.

In a companion application filed of even date herewith, Serial N o. 172,684.,1 have included claims which cover features ofthe present construction; the claims contained herein being restricted to features not disclosed in said companion application.

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

In a typewriting machine, the combination of a platen, a work sheet guide having top and bottom fixed guide walls in the rear of the platen and between which a rearwardly introduced work sheet is guided, and a fixed leaf spring adapted to bear lightly against awork sheet thus introduced and press it "against said bottom fixed guide wall without preventing the sheet from passing Said leaf spring as the sheet is being introduced as specified into position in the machine, said spring being curved to forma guide surface for d recting the sheet between said spring and the bottom fixed guide wall with which it coacts in pressing the sheet.

v 2. In a typewriting machine, the combination of a platen, means for directing a sheet rearwardly from in front of around and beneath the platen, fixed top and bottom'guide walls in .the rearof the platen between which a work sheet as it is introduced rearwardly into the machine is guided from said direct ing means, and a spring pressed element having a contact surface at all times mainsheet from passing saic cured at one end to and arranged parallel with said paper table, and spring means carried by and fixed to said bar and extending into the space between the bar and the paper table and coactingwith a work sheet introduoed in said space to press the sheet lightly against the paper table and hold said sheet face to guide the paper position in lel with said paper table,

tion of a carriage, a platen against accidental displacement without preventing the sheet from passing said spring means as the sheet is being introduced into the machine.

4. In a typewriting machine, the combination of ac platen, a paper tcble fixed in the rearof the platen, means for directing a work sheet rearwardly from in front of beneath and around the platen, a depending guide bar secured at its upper end and arranged paraland spring means carried by and fixed to said bar and extending at all times into the space between the bar and the paper table and coacting with a sheet introduced into said space to press the sheet. lightly against the paper table and holdsaid sheet against accidental displacement withoutpreventing the sheet from passing said spring means as the sheet is be-. ing introduced into position in the machine, said spring means having a curved contact beneath said spring means.

5. In a typewriting machine, the combinacarried thereby,

7 two curved paper deflectors arranged one above the other beneath the platen, means for maintaining said deflectors spaced apart so that they with the platen will form two separate channels through which the work sheets may'pass, the upper channel being between the platen and the upper deflector, the lower channel being between the two deflectors, a

paper table in' the rear of the platen, paper guiding means which with said paper table form a continuation of the lower channel, and spring lower channel for coacting with a work sheet means in said continuation of the therein to press the sheet against the paper table and prevent an accidental displacement of the sheet. I

6. In a typewriting machine, the cornbis nation of a carriage, a platen carried thereby, two curved paper deflectors arranged one above the other beneath the platen, means for maintaining said deflectors spaced apart s0 that they with the platen will form two sep: arate channels through which the work sheets may pass, the upper channel being between t the platen and the upper deflector, the lower between the two deflectors, a

channel being paper table in the rear of the platen, paper l guiding means which with said paper table form a continuation of the lower channel, and,

a curved leafspring received in said continuation of the lower channel and cooperative with the paper table to hold a work sheet against accidental displacement, a curved surface of said spring acting as a guide to dire'ct paper from the lower channel into said extension and beneath said spring.

7. In .a typewriting machine,the combination of a carriage, a platen carried thereby,

two curved paper deflectors arranged beneath the platen and maintained spaced apart to form a channel between'them, and spring means spaced apart to coact with the side edge portions of a comparatively widesheet introduced in said accidental displacement while a narrower sheet may be independently introduced in said channel.

8. In a typewriting machine, the combination of a carriage, a platen carried thereby, two curved paper deflectors arranged beneath the platen and maintained spaced apart to form a channel between them, and a pair of curved leaf springs spaced apart to coact channel and hold it against with the side edge portions of a comparative 1y wide sheet introduced in said channel and hold it against accidental displacement while a narrower sheet may be independently introduced in said channel, curved portions of said springs providing deflecting surfaces for guiding said comparatively wide sheet beneath the springs.

9. In a typewriting machine, the combination of a-paper table, a depending guide bar secured at one end and arranged parallel with said paper table, spring means carried by sald bar and extending into the space bar and the paper table and coacting with a sheet introduced in said space to press the sheet against the paper table and hold said sheet against accidental displacement, an

means by which said guide bar may be adiusted to different set positions longitudinally of said paper table.

10. In a typewriting or like machine, the

combination of a cylindrical platen, an end stop for the paper, a flexible arm which carries said stop, the flexibility of said armfenabling it to bend to a curved condition which between the conforms generally to the curvature of the platen, a pivot on which said arm is mounted for pivotal movement from an ineffective position substantially parallel with the axis of the platen to an effective position around the platen, means for holding the arm in place e around the platen in suchcurved condition, and means rendered effective at will for holding the flexible arm against flexing action.

11. In a typewriting or like machine, the combination of a cylindrical platen, an end stop for the paper, a flexible arm which carries said stop, the flexibility of said arm enabling it to bend to a curved condition which conforms generally to the curvature of the platen, a pivot on which said arm is mounted for pivotal movement from an ineflective position substantially parallelwith the axis of the platen to an effective position around the platen, means for holding the arm in place around the platen in such curved condition, and spring means which may be shifted into and out of cooperative relation with said flexible arm and which when in cooperative relation with said arm holds it against flexing action.

12. In a typewriting or like machine, the combination of a cylindrical platen, an end stop for the paper, a flexible arm which carries said stop, the flexibility of said arm enabling it to bend to a curved condition which conforms generally to the curvature of the platen, a pivot on which said arm is mounted for pivotal movement from an ineffective po sition substantially parallel with the axis of the platen to an eflectiveposition around the platen, means for holding the arm in place around the platen in such curved condition, and a relatively stiff leaf spring mounted on the same pivot as said flexible arm and shiftable on its pivot into and out of efl'ective position, the spring when in effective position overlying and bearing against the flexible arm and holding it against flexing movement and accidental displacement.

13. In a typewriting or like machine, the combination of a cylindrical platen, an end stop for the paper, a flexible arm which carries said stop, means for adjusting said arm in a curved path around the platen, the flexibility of the arm enabling it to conform generally to the curvature of the platen, and means rendered effective at will to reinforce and prevent a flexing of said arm.

14. In a typewriting machine, the combination of a work sheet guide having top and bottom fixed guide walls between which a work sheet as it is introduced into the machine is guided, and spring means permanently maintained effective against one of said fixed guide walls and adapted to bear against a sheet as it is being thus introduced and lightly press the sheet against one of said fixed Walls Without preventing the sheet from passing said spring means as the sheet is be- FREDERICK A. HART.

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