US2028813A - Sheet feeding and delivering mechanism - Google Patents

Description

im. 28, 1936 R. STUART SHEET FEEDING AND DELIVERING MECHANISM Original Filed Mayl 2'?, 1933 6 Sheets-Sheet l Sum.

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SHEET FEEDING AND DELIVERING MECHANISM Original Filed May 27, 1933 6 Sheets-Sheet 2 ATTORNEYS Jam.. 28, 19362. R. STUART SHEET FEEDING AND DELIVERING MECHANISM Original Filed May 27, 1933 6 Sheets-Sheet 3 ATTORNEYS Jam., 28, 11936.

R. STUART 2,028,833

SHEET FEEDING AND DELIVERING MECHANISM Original Filed May 27, 1933 6( Sheets-Shedl 4 j INVENTCR ATTO RNEYS Jam. 28? i936. R, STUART SHEET FEEDING AND DELIVERING MECHANISM Original Filed May 27, 1933 6 Sheets-Sheet 5 R o m T N E vw m Z0 5 O 3 F, H a U|, a@ .Almk a n 9 @25 E 6 a0 9 a 22mm m GVOv www 1a 4 75 o ZZ Vl 1 l] m Uil/W @u ZM ATTO RN EYS Jaim. 28, 1936. R. STUART 2,028,83

SHEET FEEDING AND DELIVERING MECHANISM Original Filed May 27, 193 6 Sheets-Sheet 6 INVENTOR @www ATTORNEYS Patented Jan. 28, 1936 UNITED STATES PATENT GFFICE SHEET FEEDING AND DELIVERING MECHANISM Robert Stuart, Forest Hills, N. Y.

l 10 Claims.

This invention relates to sheet feeding and delivering mechanism for typewriters, and is herein shown embodied in, although not restricted for use with, the machine shown, described and claimed in my pending application Serial No.

673,203, led May 27, 1933, of which the present application is a division. The machine to which said application Serial No. 673,203 is directed includes a projecting apparatus by which minute records, such as informative data respecting each f a multitude of addresses, may be enlarged and projected on a screen so as to enable the typist to utilize the projected subject matter as a guide or copy, the projecting apparatus being separately claimed in my pending application Serial No. 738,610 of even date, also a division of said application Serial No. 673,203.

An object of the invention is to provide an irnproved sheet feeding and delivering mechanism by which sheets of paper may be automatically delivered to and placed one after another in proper writing position on the platen roll of a typewriter, and by which such sheets may be automatically ejected or discharged from the platen roll and successively stored, thus relieving the typist of all labor in such positioning, ej ecting and storing. Other objects and advantages of the invention will become apparent from the following description, taken in connection with the accompanying drawings, in which- Fig. 1 is a prole View of the complete apparatus, some of the parts being omitted and others shown in section for purpose of clarity; Fig. 2 is a profile View of a portion of the apparatus, particularly illustrating the shape of one of the side frame plates and the belt drive connections to the conveyer rollers; Fig. 3 is a front View of the apparatus, some of the parts being omitted for purpose of Clarity; Fig. 4 is an enlarged plan View, partly in section, of the typewriter platen roll and parts associated therewith; Fig. 5 is a cross-sectional view of parts, taken on the plane indicated by the arrows '5X-5X in Fig. 4; Fig. 6 is a detail View taken on the plane indicated by the arrows (5X- SX in Fig. 5 particularly illustrating the construction of the cooperating cams determining the extent of rotation of the platen roll; Fig. 7 is a cross sectional view of parts, taken on the plane indicated by the arrows iX-iX in Fig. 4; Fig. 8 is a detail View taken on the plane indicated by the arrows 8 8 in Fig. 4, particularly illustrating the tripping mechanism for starting the apparatus; Fig. 9 is a viewoi' parts, takenon the plane indicated by the arrows 9 9 in Fig. 4; Fig. 10 is a view taken on the plane indicated by the arrows I0 I 0X in Fig. 4, particularly illustrating parts immediately in the rear of the platen roll and movable therewith; Fig. 10A is a detail view taken on the plane indicated by the arrows lAX-I OAX in Fig. l2, particularly illustrating one of the rear fingers movable with the platen roll; Fig. l1 is a detail view taken on the plane indicated by the arrows l lX-l IX in Fig. 4, particularly illustrating the cooperating carn- 10 grooved wheel and roller-carrying slotted lever, which serve to actuate the suction sheet feeding devices; 12 is a View taken on the plane indicated by the arrows IZX-IZX in Fig. 10, particularly illustrating the rear roller and fingers movable with the platen roll; Fig. 13 is an enlarged prole cross-sectional view of the upper iront portion of the projector, particularly illustrating shuttter mechanism parts; Fig. 14 is a rear View taken on the plane indicated by the arrows HLX- 44X in Fig. 13, particularly illustrating other parts of the shutter mechanism; Fig. 15 is a detail view taken on the plane indicated by the arrows IEX- 15X in Fig. 1, particularly illustrating rocking parts for actuating the shutter mechanism; Fig. 16 is an enlarged View of a portion of the apparatus, taken on the plane indicated by the arrows NSX- I6X in Fig. 1; Fig. 17 is an enlarged profile view of the llm reeling mechanism and other parts associated therewith; Fig. 18 is a plan View of partswtaken on the plane indicated by the arrows l 8 8X in Fig. 17; Fig. 19 is a cross-sectional detail View taken on the plane indicated by the arrows |9 -|9X in Fig. 17, particularly illustrating one of the reels and supporting mechanism therefor; Fig. 20 is a crosssectional View of details, taken on the plane indicated by the arrows 20 20 in Fig. 17; Fig. 21 is a detail view of the lm actuating mechanism clutch control,V taken on the plane indicated by the arrows 2I 2| in Fig. 18; Fig. 22 is a detail View taken on the plane indicated by the arrows 22X-22X in Fig. 4, particularly illustrating the cooperating cam-grooved wheel and roller-carrying slotted lever, which serve to actuate the mechanism for moving the sheet supply and storage magazines; Fig. 23 ris a detail view taken on the plane indicated by the arrows 23 23X in Fig. 1, particularly illustrating parts of the mechanism for moving said magazines; and Fig. 24 is an enlarged view of parts of said mechanism.

Referring to Figs. 1, 2 and 3, a typewriter I is shown positioned on a xed base or desk top 2 to permit manipulation of its keyboard and is vpreferably fixedly secured in this position to stops (not shown).V

said base 2. This typewriter, insofar as its manual operation is concerned, is of standard Y construction, no detailed description of its usual parts being required, but, to adapt it to have sheets automatically fed to its platen roll 4 and placed in writingpositionV thereon, its usual sheet supporting or guiding plate 5 is formed with a longitudinalslot 6", as best illustrated in Figs. l and 12, and carries at its rear further parts forrmo'vement therewith. These additional parts and the particular purpose of the slot 6 willbe Of course, the plate 5,.

described hereinafter.V as in the usual construction, is in fixed relation the typewriter carriage and therefore ,moves laterally in either direction with the platen roll 4.

Qverhanging the typewriter i are a sheet feeding conveyer 6 and a sheet discharging conveyor l, each comprising spaced guide Y,plates suitably Supported by side plates 8 and 8a iixedly extending from the base 2, one of the plates, 8a, beingV shaped as shown in Fig. 2 to allow proper lateralV movement, Vin either direction, or the typewriter carriage anda sheet therein. As shown by an inspection of Fig. 3, these conveyors are disposed at one side to cooperate with the typewriter carriage when the latter is in its extreme left position, determined by one oi' theusual adjustable v The lower portion of the feed conveyer 6 slopes to the same extent as the typewriter guide plate 5, and, for said position of the typewriter carriage, the lower edge or discharge end of said conveyer G is slightly spaced from the upper edge of said plate and the latter Y is in direct alinement with the lower guide plate of als said conveyor E so as to form a virtual continua.-

tion thereof. The discharge conveyer 'l is posiy.tioned above the `feed conveyer, a laterally extending hinge 9 being provided to permit its lower portion 'la to be swung from its position shown in Fig. l to its position shown in Fig; 2, Vso as not to hinder the operatorsmovements when it isV desired to remove sheets from the Vtypewriter by hand or both insert and remove sheets into and from the typewriter by hand.

The pivotal portion la may be detachably held in its upper position by any'suitable means.

When in its lower position, the lower edge or in-V Y take end of theconveyer 'l is so positioned relatively to the typewriter thatthe sheets, as they are ejected, when typed upon, by successive rota- ;tions or line-spacing actuations of -the platen li,'which is provided with an open side contiguous tothe intake end of'said conveyer 6. The

. typewritten sheetsV are discharged Yfrom-the con-Y "ve'yer 'l into another verticallyrrmovable container or magazine l2, which is provided with an open sidecontiguous to'thedischarge endof saidY conveyor V'l and which stacks the sheets Vit receives. 'As will be hereinafter more clearly understood, the-apparatus operates to removeVV the sheetsrfrom the magazine li, only one at time and only-.one during each' Voperation of the apparatus (for conveyance to and properY I positioning on the platen roll d), and to'advance f or'store the sheets into the magazine l 2, only one atiatirne, andonly one during each'operation 7 of the apparatus (after its ejection and conveyance Afronifthe.platenY roll d). Ar'rhus, order 'l into the storage magazine I 2. v

l thatthe upper exposed sheetof the stack in the magazine Il be maintained at the proper level relatively to the intake end of the conveyor 6, the sheet supply magazine Il is displaced upwardly a given distance, whenever'the stack lll has been depleted to an extent making this operation necessary. Simultaneously therewith, the sheet storage magazine I2 is displaced downwardly the same distance. rThe mechanism causing these simultaneous displacements of the two magazines will be described hereinafter. Each of the magazineseis equipped with the usual adinstable means (not shown) forV properly positioning and stacking the sheets in accordance with their size. f i

Each of the conveyers 6 and l' also comprises a plurality ofV belt-driven rollers and a corresponding number of spring-pressed idlersl l5 cooperating therewith.. of these rollers are rotatably mounted on the frame or side plates 8 and 8a, operate rthrough laterallypextending slots formed in the guide plates of said conveyers, and are adapted to be rotated*V continuously as will be seen, the cooperating roller pairs of each conveyer acting in turn-'to engage opposite surfaces of a guided'sheet to advance or convey it in the proper direction, Yas determined by their rotation. Y y

These rollers are of such length and the cooperating pairs of Yeach conveyer are disposedv at suoli intervals that sheets of varyingV size may be properly conveyed in the manner described. Thus, the sheet-supply stack I0 may vary in regard toi the size of the sheets it contains, a pair of section sheet feeding devices I5 (only one being shown) to be hereinafter more particuiarly describedacting to transfer said* sheets from the magazine i i seriatim to the first cooperating roller pair Il of the conveyerV 6 at its intake end, being thereafter discharged the last cooperating roller pair illinto Vthe lower sloping portion-of said conveyer l, throughV whichV they travel by reason of weight and velocity and from which they are wholly or partly discharged on the guide plate 5 of the typewriter carriage (in its extreme left position). WithY the first cooperating roller pair 2D of the conve-yer l properly disposed relatively to the platen roll (in its extreme left position) Veach of the sheets (assumed to have been properly positioned on the-platenrroll 4 for Vthe present) as it travels between the guide plates of said conveyerV l (by automatic Yrotation ofY the platen rolls, as will be understood), may be gripped by said pair 2d to4 be discharged bythe last cooperating roller pair 2| of said conveyer The power for actuating the apparatus-is furnished by a motor 22 suitably secured to the base '2. As shown -in Fig. 16, the motor shaft/drives a pair of cooperating bevel gears 2d and 25, one of these, 25, being secured to the lower end of averin a bearing El forming part of a'support-ZB lined to the base 2 and above the base 2 in a bearing 301 secured to the side plate 8. Y Said shaft V2li is preventedY from moving axiallyland may'Y be mechanically connected at its upper end by a clutching ydevice 3d to" a bevel' gear 35 rotatablyY mounted in a horizontal-iframe piece 36 secured the plate 36 and in theside frame plate'aand carries at itsinner end-a bevel4 gear 40 meshing the frame piece 36.

with the aforesaid gear 35'. At its outer end said shaft 3l carries a double pulley ill.

Referring to Fig. 2, said pulley il cooperates with a belt i2 which drives a double pulley t3 xed to the shaft of the roller ll of the cooperating pair 2li. The remaining rollers i4 of the conveyer 'l are each provided with a pulley ill driven by another belt 5 cooperating with said double pulley [53. An idler or tightening roller 'i6 is provided to keep the belt 85 in contact with all of its cooperating pulleys and is rotatably mounted in the side plates 8 and 8a. The roller M of the cooperating pair i9 is also provided with a double pulley 4l', which is rotated by the aforesaid double pulley ill through the intermediary of a full-twist or cross-belt producing a reverse motion of the driven roller. The roller ld of the other cooperating pair ll is driven by another belt 58 cooperating with said pulley 4l. With the motor 22 running and the shaft 26 and gear 35 connected by the clutching device S, the various rollers of the two conveyors E and 'l are thus caused to rotate continuously.

The clutching device 313 comprises a toothed tubular element 5l fixed to the gear 35 and a cooperating toothed tubular element 52 slidably keyed to the shaft 2S so as to rotate therewith. As shown in Fig. 9, the shaft 26 is rotatable within said gear 35 and element 5l, which are rotatable as a unit. A spring 54 disposed between the element 52 and a fixed collar 55, holds the toothed elements 5l and 52 in mesh. A bell-crank control 56 is pivotally carried by a bracket fixed to the frame piece 3G and has a pin which rides in a circular groove 58 on the slidable element 52 ,and a detent 59 to cooperate with an opening 53 in Said control, when operated to cause the detent to drop into the opening, disengages the clutch elements 5l and 52 against the spring 54. lIhis clutching Adevice 34 permits stopping the rotation of the conveyer rollers, when it is desired to insert and remove sheets on and from the platen roll i by hand. Its control 59 may be manipulated through an opening 8l in the side frame plate 8.

A Worm 62 is fixed to the actuating shaft 28 and, as shown Fig. e, meshes with a worniwheel 6d, which therefore rotates continuously. Referring to Fig. '7, said wheel Sli is loosely engaged by a shaft B so as to be rotatable thereon. Said shaft 5S is rotatably mounted in the side frame plate 8 and in a bearing 85 secured to the frame piece 35, a fixed collar 69 preventing outward movement thereof. The wheel 3d is provided with a hollow toothed hub or clutching member ll, within which a collar S3, xed to the shaft 6E, is disposed. rlhe collar 68 and the bearing 65 prevent axial displacement of the wheel 64, inward movement of the shaft 66 being also prevented. Slidably keyed to the same shaft is a gear l2, also comprising a toothed hub portion i4 extending toward said element l. Said gear 'l2 is rotatable on a ball-thrust bearing l5, the spring i8 of which provides pressure on the gear for moving it and the clutching member M inwardly and holding the latter locked to the clutching member 7l. These members 'il and l, however, are normally restrained from meshing by a bar or cam 'l on which normally rests a lug 'I9 fxedly extending from said gear l2. Said element 'VI will be hereinafter more particularly described.

In the embodiment of the invention illustrated, av foot-pedal 88 is provided to start the operation of the apparatus. Referring to Fig. 1, this pedal 68 is suitably pivoted below the table top 2 and its rearward extension 88a, is loosely pivotally connected to a short link 8l, itself suitably pivoted below the top 2 and pivotally connected at its rear to a rod 82, extending through the top 2 and, as shown in Fig. 7, slidably held at its upper end by the frame piece 36. Upon depressing the pedal 88, the rod 82 is caused to move downwardly. Upon releasing the pedal, a spring 83, acting on a fixed collar 18, raises both the rod and the pedal to their normally inoperative positions. Referring to Figs. 7 and 8, the rod 82 has pivotally connected thereto a finger or trip 84 which is provided at its free end with a laterally extending lug 85 normally held against an edge of the rod by a spring 83, fixed at its ends to the rod and to the trip. Said lug 85 is normally disposed above and is adapted to cooperate with a pin 86 xed to a latch 8'! held at its edges by guiding elements 8S secured to a vertical bracket 9D supported by the frame piece 35. Said latch 87 enters a notch formed on the aforesaid bar 'Il and is normally held therein by a spring 9i, xed at its ends to the bracket and to the latch. The bar 'il is slidable in the bracket 99 and is provided with a pin 92 extending through a slot 94 (Fig. 4) into a recess or chamber 95 in said bracket 90. A spring 9S is mounted in said chamber 95 and provides lateral pressure on the pin 92 for the purpose of restoring the bar 'l1 to its normal position of rest.

When depressing the pedal 8U, the lug 85 causes the pin 85 to move outwardly thereon, thus unlatching the bar ll which therefore permits the spring 'i8 to move the gear 'i2 and member 14 inwardly against the weaker spring 9E and thus lock the members 'il and lll together. Rotation is immediately applied to the gear l2 and shaft 66, the lug 79 riding off the bar 'Il which' is brought back to its normal position of rest by the spring 98. The lug 85, in its downward movement, completely clears the pin 8S, thereby permitting the spring 9| to move the latch 8'! back into locking engagement with the bar l'l. Upon releasing the pedal 85, the lug 85 in its upward movement is forced outwardly by the pin 8B which rides inwardly thereon, finally clearing the pin, whereupon it is again brought into engagement with the edge of the rod 82 by the spring 83. However, should tlie pedal 89 be released before the lug l has left the bar i. prior to the resetting movements of the bar Tl and latch 8l, the lug S5 travels in its upward movement in engagement with the rod 82 between the latter and the pin 85, nally clearing said pin which is then free to move under the action of the spring 9i to its normal position of rest. It is to be particularly noted that the gear T2 and shaft 66 are stopped rotating after having completed a full revolution, because of the declutching action, on the members 'll and l2, of the cooperative cam surfaces formed on the members 'l1 and 19. Thus, each time the operator depresses the pedal 88, the gear 'l2 and shaft 66 are caused to rotate one complete revolution.

In mesh with the gear i2 is another gear 91 bearing a one to one ratio therewith and xed to a shaft 99. The latter, as more clearly illustrated in Fig. 5, is rotatably carried at one end by a bearing or support I Eil secured to the frame piece 35 and at its other end by the side plate 8. Axial displacement of the shaft 99 is prevented by the gear 91 and by an outer crank member 55|, also fixed thereto. The function of the member 18| will be described hereinafter.

Yio Y 8|),V the pin ||0 is carried in the direction of the Y dition iixedly carries a clutching member |`3|,

movable member relatively to the iixed membe1` A toothed collar vor clutching member IE5 is slidably keyed to the shaft 99 and, under the influence of a spring |00, normally meshes with the toothed portion |01 of a gear |09. The latter is loosely mounted on the same shaft and lateral displacement thereof is prevented by an inner fixed collar |03. This collar |05 has a pin'II xed thereto and extends through a pair of apertured cam members I I I and I I2, which cooperate with said pin I I in a manner which will be hereinafter more clearly understood. One of these members, I I I, is iixed to the frame piece 36 and the other, H2, is loosely or rotatably held in the iixed member by an apertured bracket secured to said frame piece te. A handle IIe, ex-

tending from the movable member through a slot in the frame piece 3%, is provided with a springpressed pin I I0 slidably cooperating with a curved rack |II (as best illustrated in Fig. 9), this construction permitting adjusting the position of said Asshown in Fig. 3, the handle I I may be manipulated from the front of the apparatus. As best illustrated in Fig. 6, the xed member III is formed with a circular track I I9 having an arcuate tooth or raised cammed portion |20 and the position of the handle IIE.

It being observed 'that the collar |05 rotates one complete revolution only, each time the pedal 80 is depressed, the position of the pin I I0 is by necessity the same at the start andat the end of Vsuch rotation. This normally inoperative position of the pin IID is shown in the drawings,

namely on the low portions of both tracks I I9 and I2| and adjacent to the raised portion |20 of the iixed member I I I. Upon depressing the pedal arrow in Fig. 6, riding on both of said low track portionsuntil it reaches and is Vraised yby the cammed portion |22 of the adjustable member IIZ, this `causing the member |05 to become sep- Varated from the member |01 against the force of |07 in'mesh. i

rotation Vof the gear |09 may be controlled, i. e.,

the spring |06. The gear |09 stops rotating, but

rthe pin I I0 continues rotating with the collar |05,

rst riding on said raised portion I 22 alone, then on both raised portions Y|22 and |20, and then 'onlyV cn the raised portion |20 of the iixed member III. t finally slides off the latter cammed portion |20, its rotation being arrested at the instant it assumes its originalposition shown in the drawings, with the clutching members ICES and It now becomes apparent thatv the its extent of rotation varied,V byV adjusting the position of the handle |I5. Y

Referring particularly to Fig. 4, the gear |9` i collar IZ;1 Vprevent lateral displacements of the shaft |25.

' facing'the platenY roll 4, with a toothed hub por- Said gear |25 is provided, at its side tion or clutching member I29,.and the usual Vshaft iixed tothe platen roll d Vis provided at its left with the usual knurled'wheel |30, but inad- Which meshes Withlth'e member ,|29 When the typewriter carriage is in its' extreme left posi- Yto keep the roller in the groove.

at its other end (see Fig. l) is'pivotally connected scription, the typing of 'a sheet in the typewriter to have been completed, Ythe operator depresses the usual mechanism (not shown) for releasing the carriage so that it Will move to the left, the usual stop (not shown) being so adjusted that the carriage is caused to move the entire extent of its possible travel. (In the usual typewriter construction, the carriage releasing mechanism may comprise a latch or key on the carriage, but, with proper adjustments, 'a key on the keyboard or either one of a plurality of keys onthe keyboard may be caused to eifect motion of the carriage to its extreme left position.) With theV members |29 and |3| in mesh, the operator depresses the pedal 80, which causes the platen roll i to rotate to the extent determinedby the position of .the control ||5 and such sheet to be progressively ejected as a result of this rotation, being caught,

transferred by the'latter into the sheet storage magazine l2.

Slidably keyed to the inner end of the shaft 6B is a clutching member |32,.and in alinement with said shaft 0B is another shaft Gl rotatably carried by a bearing 63 secured to the frame piece 3S and by the opposite side frame plate 8a. A

Vwheel |36 and a clutching member |34 fixed to the shaft 6l on opposite sides of the bearing 93 pre-V vent axial displacement of said shaft'S.` Said wheel I 36'will be hereinafterrmore Vparticularly described. During the operation of the apparatus, when it is used to automatically feed sheets to and position them on the platen roll, said members |32 Vand |342 are kept in constant mesh by a control Il I, alsoV to be hereinafter more particularly described. Obviously,V with the members |32 and i3d in mesh, each time the pedal Yis depressed, theshaft 6'! is'caused to rotate, as

carries a roller IIII cooperatingV with said groove |38.

A collar'IiIZ is Viixedly secured to the shaft 61 adjacent the outer face of the lever head |40,

to a pivotal arm I IIB xedly extending from a The lever I 39Y shaft suitably mountedin the Vside plates 8V and 8a, said arm IM Vforming-a bell-crank consaid pair of suction sheet gripping and 'feeding devices I6 (only one ybeing shown), alsoiixedly The devices |61 extending'from V,said shaft |45.

Vstruction through the shaft IE5 with theV afore- Y are normally positioned with their sheet gripping shoes Id in engagement or substantialengagement with the top sheet of the stack, the

Y cooperating groove |33 and roller IdI obviously creating Vreciprocating motion of the-lever |39 and Ythusrockingmotion of said shoes. They are of standard Y construction,V the suction necessary for their' operation being created through a suitable conduit |136 and in the usual i manner being intermittently applied to their stack |0 at their edges to cause the top sheetto become separated, thus permitting the devices I5Y to grip andtransfer to the conveyer 6 made to operate; illustrated vby the air nozzle and conduit |47.'V

It being observed that, with the members 132 and 134 in mesh, the cam-grooved wheel 13'1 makes one complete revolution each time the pedal 89 is depressed, the position of the roller 141 relatively to the groove 138 must be the same at the start and at the end of such rotation. Now the groove 138 is so designed that, during such rotation, the lever 139 is carried onlyonce in one direction, causing the shoes 15a to be swung toward the first cooperating roller pair 11 of the conveyer 5, and immediately thereafter only once inthe opposite direction, causing the shoes 15a to be brought back to their inoperative positions on the remaining stack of sheets. Thus, each time the pedal 89 is depressed, a single sheet is transferred by the shoes 15a from the magazine 11 to the conveyer 6 to be conveyed thereby to the platen roll 4, which as previously stated must then be in its extreme left position. This single cycle of motion of the rod 139 occurs at a predetermined time during the operation of the apparatus, as will be hereinafter more particulary described.

Referring to Figs. 4 and 10, another camgro-oved wheel 149 is slidably keyed to the shaft 61 and its groove 159 cooperates with a roller 154 carried by a second slotted lever 151 mounted on the shaft l so as to be guided thereby. Both the wheel 149 and lever 151 are caused to move with the typewriter carriage by a pair of apertured brackets 155 slidably mounted on the shaft 67 and xedly secured to the rear surface of the typewriter guide plate'5. A washer or spacer 155, positioned between the lever 151 and one of the brackets 155, keeps the roller 154 in' the groove B. Referring to Figs. 10 and 12, the lever 151 at its other end is pivotally connected to a pivotal arm |57 flxedly extending from a shaft 159 pivotally mounted at its ends into brackets 159 fixed to the plate 5. Also xedly extending from the shaft 159 and forming a bell-crank construction with said arm 15'1 are a pair of arms 151 carrying a spring-pressed roller 152, which normally coopcrates with the platen roll 4 through the aforesaid slot 5'. Another arm 154 is pivotally attached to the lever 151 and is xed at its other end to another shaft 165 pivotally mounted into brackets 56 xed to the plate 5. Fixed to the shaft 155 are a pair of arms 157 each of which carries at its end a spring-pressed nger 159. The twongers 159 are also operative through the sl-ot E', but are normally spaced from the platen roll 4.

The function of the ngers 159, as Will be hereinafter more clearly understood, is to stop a sheet in its descent from the conveyer 5 down the guideplate 5. I deem this feature of my invention to be an important improvement in the art of automatically feeding sheets to a typewriter and placing them in writing position on its platen roll, inasmuch as it not only properly alines the edges of the sheets relatively to the axis of the platen roll, but also assures their location, at any instant during their subsequent travel in engagement with the automatically rotated platen roll, to be definitely correlated to the various elements necessary to position them automatically on the platen roll, so that each sheet in turn may be caused to occupy the same: position at the end of its automatically pro-duced motion on the platen roll. That in turn permits any size sheet to be advanced to writing position on the platen roll, by suitably adjusting the extent of rotation of the platen roll.

With the members 152 and 134 in mesh, the

wheel 149 makes one complete revolution each time the apparatus is operated by the pedal 89 so that the position of the roller 154 in the groove 159 is the same at the start and at the end of such rotation. Now the groove 1511 is so designed that, during such rotation, the lever 151 is carried only once in one direction, causing the fingers |69 to engage the platen roll 4 and the roller 162 to become separated from the platen roll 4, and thereafter only once in the opposite direction, causing the ngers 159 and the roller 162 to be restored to their normal positions shown. Each of these two movements of the lever 151 takes place at a predetermined time during the operation of the apparatus, as will be hereinafter more particularly described.

Referring to Figs. 4 and 22, still another camgrooved wheel 182 is provided on the shaft 61 to which it is secured. The roller 184 cooperating with its groove 183 is carried by a third slotted lever 185 mounted on the shaft 61 so as to be guided thereby. A fixed collar 186 keeps the roller 184 in the groove 183. As illustrated in Figs. 1 and 23, the lever 185 at its other end is connected to one arm of a bell-crank 18'1 pivotally carried by a vertical frame plate 188 extending from the base 2. The other end of the bell-crank 181 is connected to the lower end of a vertical rod 189. As illustrated in Figs. 23 and 24, the upper end of the rod 189 is provided with a slot 190 in which engages a pin carried by an outer arm 191 forming part of a rocking member 192 loosely mounted on Aa shaft 193, the latter, as shown in Fig. 1, being rotatably mounted in bearings at the upper edge of the frame plate 188. The rocking member 192 is provided with an inner arm 194 which is weighted and normally held in an uppermost position by a vertical latch 195 xed to a shaft 195 pivotally carried in stand- .ards 191 secured to the plate 188. The rocking member 192 comprises still another arm 198 which has pivotally mounted thereon a pawl 199 c0- operating with a ratchet wheel 200 xed to the shaft 193. As shown in full lines in Fig. 24, the normal position of the m'ember 192, i. e., its position when held against gravity by the latch |95, causes the pin carried by the outer arm 191 to be located at the bottom of the slot 190. As will be hereinafter more particularly described, upon a rocking movement of the inner arm 194 and an upward movement of the lever 189 to their respective positions indicated in dot and dash lines, the weight of the inner arm 194 causes said pin to ride with the lever 189 at the top of 55- the slot 199 and the pawl 199 to be set back a tooth on the ratchet 290.

Referring particularly to Fig. 1, another rocking shaft is mounted at one end in the standard 191 and at the other in a standard 2112. A block 203, adjustably secured to said shaft 201, iixedly carries a bent rod 2114 to the outer end of which a nger 2115 is adjustably secured. The finger 295 rests on the upper surface of the supply-sheet stack 1U and gradually drops, exerting a torque on the shaft 291, as the height of the stack is diminished by successive sheet deliveries to the conveyer 6. The block and finger adjustments permit the finger to be cooperatively positioned on the stack 19 in accordance with the size of the sheets it contains. The turning movement of the shaft 201 causes a corresponding rocking movement of an arm 206 xed thereto and slidingly cooperating with a pin carried by an arm 29'! fixed to the shaft 196. The upper- 208 fixed to thestandard |9'l.

A worm 209; iixedly mounted on the shaft |93, meshes with a worm-wheel 2li) secured on a shaft 2| rotatably mounted at its endsnin beargings carried by'the framewplate |88 and by aniY other frame plate (not shown), respectively- The shaft 2|| :also iixedly carries .a sprocket-YY Vwheel 212 cooperating with a sprocket-chain 999,' one enel` of which is connected to the magazine andithe other end to' a balancing Weight 40|;

' ll'rY r are prevented from rotation, as by keying thenf The magazines V|| and I2 are rigidly carried by Yvertical rod-supports 1392 and 493, respectively'.

These supports'are mounted in .and griided for verticai movement by bearing-memberslll, but

therein. The bearings |94 extend fromfeither of the parallel'frame plates, one of which only, namely,r|88, is'illustrated in Fig:= i. TheY rods and 493 operate through thefbase 2 and are looselyrconnected at their lower extremities to time the pedal 89 is depressed by the operator so that the position of the roller |84 in the groove |83 is the same at the start and at the end of each such rotation. Now the groove |83 is so designed Y that, during such rotation, the lever |85fis carried only once in one direction, causing the rod |89 to be displaced upwardly,

Vand immediately thereafter only once in the opposite direction, causing the rod |89 to be displacedfrdownwardly. This single cycle of motion of thellever |85 occurs at a predetermined time during-1V the operation of the apparatus, as will be hereinafter more particularly described. Whe-fn the weighted member |92 is in its position shown .in full lines in Fig..24, i. e., in locking engage'- ment with the latch |95, these displacements of the Arod |89 have no eiTect onY said member, because of the slot and pin connection of these parts, the pin merely riding first to the top, then to the bottom of the slot |90. tain number of actuations of the pedal 8|), causing removal of a correspondingV number of sheets from the supply stack l0, the lowering of the finger 295 will have caused the latch |95 to have swung out of locking engagement with the member |92 through the intermediary of the rocking elements 294, 20|., 29S, 291 and |95, permitting said memberto swing'under the influence of its weight until limited infY such movement by its pin striking the ripper end of the slot |99. rihus,

" the following'V operation of the pedal 80 causes v|99 on the ratchet 200. The shaft 2|| is corr-espondingly rotated through the intermediary Vof the worm 299 and worm-wheel 2|l). The corresponding rotation of the sprocket-wheel 2|2 raises the magazine 2| |y through the intermediary 'Y of the chain 490, bringing the upper jsurface of the stack I to its former level. The'iinger 295V is thus brought back Yto its former position, and in this return movement thefarnr 296V is caused to swing back to its lowermost position, permit- However, after a cer-V most position of the arm 291 is limited by a pink ting the arm 291 to follow suit by action oilV Ygravi-y and the latch to be correspondingly grestored beneath the weighted arm |94. Obviously, each time the supply magazine is raised in this manner, the storage magazine |12V is lowered correspondingly the same distance. YThe abovedescribed mechanism for moving the;V magazines Y and l2 permits the use of work sheets of varying thickness.'

A hand-wheel |53 (Fig. l) is provided at the rear end of the shaft |93 for aldjustingithe respec- Y tive positions'of the magazines l and "i 2. Before operating this wheel to lower the magazine and elevate the magazine l2, the pawl |99 must'be swung out of engagement its ratchet 209. Obviously, the starting positions of the magazines and |2 are adjusted in'a-ccordancewith the height of the stack o work sheets with which the magazine has been supplied.

Assuming the operator to have completed his or her work ofraddressi'jng a sheet on the platen roll li, upon actuating theinsual typewriter carriage releasing mechanism `(not shown), the wheel |49,

the lever |lf and the parts carried by said lever are moved the typewriter carriage to their extreme lettpositions on the shaft 61., because of their being guided e thereon by the brackets |55. Upon ldepressing the pedal 89, no movement is imparted to the levers |39 and I5! by their respective cooperating groovesV |38 nand |59i'for a certain period of time, during which the jroller |52 cooperates with the platen rolli4 in causing ejection of the addressed sheet andthe platen roll 4 is sufficiently rotated to permit'the' addressed sheet, regardless of its size, to travel y past the iingers |59.r At the end of that period, the iirst movement of the lever |39 occurs, which causes Ya new sheet I6 to be transferred to the conveyer l to bedischarged thereby on the guide plate 5; andthe rst movement of the lever |5| occurs,.thus spacing the roller |62 solas to permit partial passage of the new sheet past the roller |62 in its descent down the guide-plate 5, and advancing the fingers |69 on the platen roll 4 so as to block further ingress of the new sheet. The second movement of, the lever |39 occurs immediately after its first, as has been AVseen, which restores the shoes i'a to their nornial'positions over the stack I0. Thereafter, the movements of the lever |8215 take place in quick succession, which may or mayl not cause repositioning of the magazines and l2, Vas has been' explained. On the other hande; the groove |59 is so constructed that its cooperating lever I5! is maintained inactive upon completion of its rst movement for a slight period of time, during which the new sheet travelsV through the conveyer 6 andon the plate 5 to be stopped by the fingers |69. At the end of; this period of inactivity, the lever |5| undergoes its second movement, which quickly removes the iinlgers |69 out of engagement with the .platenrolL permitting further travel of the negw sheet, and simultaneously quickly moves the roller |62 to a position on the platen roll 4. with the inner edge portion of the new sheet therebetween. In other words, the fingers |69 are causednto clear the inner edge of the new sheet substantially at the instant the roller |62 comesinto contact with the paper. At the same instant, the platen roll 4, which has been continuoiisly rotated and has either partially orwholly eject/ed the addressed sheet, causes the new sheet, in conjunction with the roller |532., to travel inwardly on its surface. The new sheet iina'ily comes to rest, properly positioned on the platen roll ll, when the latter stops rotating, such interruption of rotation occurring, as has already been explained, when the clutching member |25 is forced to become separated from its cooperating member |01 by the action of the pin |19 on the adjustable cam |22. Obviously any one of various size sheets may be accurately positioned, in the manner described, on the platen roll by properly adjusting the position of the handle |i 5, which controls the extent of rotation of the platen roll The grooves |38, |53 and |83 are evidently so constructed that the levers |33, |5| and |35 are caused to remain inactive upon completion of their respective second movements, the wheels |31, |49 and |82 coming to rest with the rollers 141|, 15P, and |83 normally positioned relatively to their respective grooves, such interruption of rotation occurring when the members 1| and 11i are declutched by the action of the cam 11 on the cam 13.

It now becomes apparent from previous description that, with the typewriter carriage in its extreme left position, the same control, namely the pedal 83, operates to automatically transfer the tcp sheet of the stack i3 from the magazine l! into the typewriter i, without manual rotation of the platen roll i being required for locating it in its proper typing position thereon, and to simultaneously automatically remove the a1- ready positioned and addressed sheet and convey it for storage in the magazine l2 in its order of succession with relation to the sheets already stored therein. With the new sheet in place on the platen roll, the operator moves the carriage in the usual manner to the right to the position required to start typing on such sheet. During this typing period, the roller |62 cooperates with the platen roll (i and travels with the typewriter carriage, as in the usual typewriter construction. Should the member |31 on the platen shaft come in contact with the member |29 at the end of a line, the usual typewriter carriage line-spacing lever |10 (Fig. 1) may nevertheless be operated to return the carriage to begin a new line, i. e., to again move the carriage to the right and to rotate the platen to advance the sheet thereon to a position for receiving the next line of typing. In this manner, successive sheets of the stack it may be, seriatim, carried to writing position in the typewriter, typed upon, removed from the typewriter and stored. By controlling the extent of rotation of the platen roll with the handle H5, the apparatus will properly insert into the typewriter, remove therefrom and store successive sheets of any one of a plurality cf stacks l differing in the size of the sheets they contain.

inasmuch as the pedal S0 and some of the parts described, including the shaft 66, also control the operation of the projecting apparatus to be hereinafter described, it is therefore necessary, as when it is desired to operate said projecting apparatus, but to insert and remove sheets in and out of the typewriter in the usual way by hand, to disengage the clutching members 132 and |343 to render the shaft 51 and parts actuated thereby inoperative. This is accomplished by the control 11| which, as shown in Fig. 3, is operated from the front of the apparatus. As illustrated in Figs. l and 5, it is pivoted to a bracket i12 xedly extending from the support |22 and, as illustrated in Figs. 4 and '1, its inner end carries a pin |14 adapted to ride in a circular groove E15 in the member |32. Thel control |11 also carries a pivoted detent |16 adapted to cooperate with either one of two openings |11 and |18 formed in an extension |19 of the bracket |25. When moved to cause said detent to drop into opening |11, it locks the member |32 to the member |34, and when moved to cause said detent to drop into opening |18, it separates the member |32 from the member |34. When so rendered inoperative, the shaft 61 is provided with a means to prevent rotational displacement thereof, which would otherwise cause the carri-grooves |38, |53 and |83 to lose their proper positions relative to the actuating gear 12 and thus to produce improper movements of the levers |39, and |85 and parts controlled thereby, when again the apparatus is operated to automatically insert and remove sheets in and out of the typewriter This means comprises the aforesaid wheel |35, which is provided with a notch |83 normally engaged by a spring-catch |3| carried by a bracket xed to the support 63. Upon automatic rotation of the shaft 61, the spring |8| slides out of the notch |80 and drops in again at the end of such rotation.

If transfer of typewritten sheets to the storage magazine |2 is not desired, the pivotal portion 1a of the conveyer 1 may be raised, but the automatic rotation of the platen roll 4 may still be utilized for ejecting such sheets therefrom. Also, by operating the control |1| to declutch the members |32 and |34, blanks may be positioned by hand on the guide-plate 5 and the automatic rotation of the platen roll Il used for properly positioning them thereon. For such occasions, the control 56 (Fig. 16) may, if desired, be operated to stop the conveyer rollers rotating.

Referring to Fig. l, a magnifying lens or optical system of lenses 229 transmits a divergent beam of light from a light source or lamp 22|, which beam after reflection from a mirror 222 is projected on the rear surface of a translucent screen 224. The latter, as shown in Figs. 1 and 3, is so positioned as to be readily observable by the typist during his or her work at the typewriter l. The lamp 22| is housed beneath the base 2 within a box 225, which is provided with an apertured end 223 for the passage of rays. A dark-box 221 for housing said beam comprises an axially vertical rear section 2210, projecting upwardly through the base 2 and carrying at its lower end the optical projecting means 222 beneath said base and an axially horizontal upper section 2212) extending forwardly from said rear section 221a and carrying at its forward end portion the screen 22d between apertured plates or frames 229. This box 221 increases in cross-sectional size from the projecting means 229 to the screen 224 to permit unobstructed passage of the divergent beam, the mirror 222 being interiorly disposed at 45 degree angles with the respective axes of the two sections of said box 221.

As best illustrated in Figs. 17 and 13, a light transmitting band or lm 233, such as is used for motion picture projection and the picture areas or portions of which have the addresses or desired records photographed thereon, is mounted on the usual reels 253i and 231 for travel from one to the other between the optical device 223 and the apertured end 225 oi the light-box 225. As shown in Fig. 19, the reel 23| is removably keyed to a spool 232, rotatable on a fixed shaft 2345. The latter is carried by a vertical frame plate 235, iixedly mounted beneath the base 2. A nut 236 maintains the reel 23! on its spool 232, and a pair of pins 231 riding in a circular groove 239 maintain the spool 232 on its shaft 233. A rear spring 2113, acting thro-ugh the medium of a loose washer, has the effect of a brake,

causing resistance to rotation of the spool 232 and reel 23| carried thereby. Similarly, the reel 23| is removably keyed to a spool 232 and held thereon by a nut 236. The spool 232' is similarly rotationally mounted on a fixed shaft 234', also extending from the plate 235. In like manner, a spring 22B functions to restrain rotational movement of the spool 232 and reel 23 I thereon. The film 232, in its travel from one reel to the other, passes over a pair of sprocket wheels 24| and 213|', the cogs of which` cooperate with the Vusual openings 222 disposed along one of the marginal edges of said film. In a manner which will be more clearly understood hereinafter, pulleys 224 and 2M respectively cooperate with the wheels 22| and 22|', the pulley 2li!! being connected with the spool 222 by a slip or friction belt 255. and pulley 222 being connected with the spool 232' by a slip or friction belt 245.

Referring to Figs. 18 and 20, a shaft 2116 is rotatably mounted in rear bearings 241 fixed to the plate 235 and carries a ygear 228 rotatable therewith. As will be seen, this shaft 246 is successively actuated at the right moments, to produce successive displacements of the film 23|) in onedirection or the other behind the lens Vor lenses 22B, its extent of rotation being one complete revolution and its direction offrotation the same on each occasion. Also fixed to the plate v235 at the rear thereof, are a pair of bearings 249, in which a shaft 252 is both rotatably and slidably mounted. Y The shaft 2511 i'lxedly carries at its ends bevel gears 25| and 25|' and also xedly carries between said bearings 259 a centrai gearV 252 constantly meshing with the gear 248.. Said gear 252 is provided with a hub portion formed with a groove 254 in which rides a pin 255 fixed to the rearY portion of a control 25ii'extending through the plate 235. This control 255 is pivoted to a front bracket 251 extending from the plate 235 and Vis provided with a `spring-pressed pin 259 adapted to slidably enter any one of three recesses 252 formed in said bracket 251. When the pin 259 is caused by the handle 252 to engage the opening 260 at the right in 18, the gear 251 is caused to mesh with a cooperating bevel-gear 215|, and when the Y pin 259 is caused by the handle 256 to engage the opening 222 at the left in said figure, theV with theirrespective cooperating gears'Zi and 26|. AThe latter gears are respectively flxedly mounted at the rear ends of shafts 262 and 262', extending forwardly through the plate 235. The gears 26| and 26| and fixed collars 262 and 222 Y prevent the shafts 222 and 262 from becoming axially displaced. Shaft 252 carries the aforesaid wheelr2i| and pulley 2052 and shaft 222 carries the aforesaid wheel 221' and pulley 242. The wheels 24| and 261| are xedV to their respective shafts, but Vthe pulleys 2M and 244 are slidably mounted thereon to permit them to be moved into and out of mesh with their respective cooperating members 22| and'idl' under the influenceof controls 265 and 2555. .A s shown in Fig. 20, the control 255 is pivoted to a xed bracket 252 extending forwardly from the plate 225 and carries a pin riding in a circular groove 229 in the pulley member 22d. A rearward extension 210 is provided with va spring-pressed pin 21| adapted to slidably enter either one ofA two recesses 212 formed in the bracket 256. In con- CIL thrown to the extreme right in Fig. 18 and the and the slip belt 225 permitting the amount ofV film displaced to be Wound on the reel 23|. In the meanwhile, the sprocket wheel 221|' is rotated idly by the film 232 and the pulley 2M' is rotated Y idly by the beltr 225. By throwing the control Y251i tothe extreme leftiin Fig. 18 and reversing the positions of the handles 255 and 285', the same rotation of the actuating shaft 246 will now cause the sprocket wheel 22 the pulley 224' and the slip belt 245' to move the lfilm 232 the same amount in the opposite direction and wind this amount on the'reel 23|. The gears-2i8 and 252 are so designed that, for each rotation of the shaft 22S, thei'llm 23@ is caused toradvance, in one direction or the other depending on the positions of the controls 252, 265 and 255', the distance of one of its picture areas, so that, as will be hereinafter more clearly understood, the picture areas of the nlm may be successively brought into proper position before the projecting means 220. With the contro-l 255 in its neutral or center position, the projecting apparatus is no longer automatically operated, Vno displacement of the film taking place by actuation of the shaft 225. Moreover, the lm 222cm. then be displaced by a crank 21d positioned on either one or the other of the sprocket wheel ends 215 and 215', depending on the positions of the controls 265 and 255' or the direction of travel desired, so that, whenever desired, any p rticular picture portion may be brought into position before the lens or lenses. Idlers or friction wheels 216 and 216 bear do-wn on the sprocket wheels 221 and 211i' for maintaining the film thereon and may bev pivoted out` of the way by respective handles 211 and 211'.

Referring to Fig. 16, the support 29V is formed with another bearing portion 219 in which the motor shaft is rotatably carried. Said motor shaft also' extends through another support 280 and loosely carries between said supports a Worm 28| which meshes with a worm-wheel 282 loosely mounted on the aforesaid shaft 225. VThe worm 28|,is formed at one side with a toothed portion 23!! to cooperate with aV spring-pressed clutching member 282 slidably keyed to the motor shaft. Axial displacement of the worm 28| is prevented by an'inner collar 225 fixed to the motor shaft. A control 289 pivoted to a bracket 292 extending from the support 29 operates on the member 286 to either separate it from or mesh it with its cooperating member 222. The control 2,89 is provided with a spring-pressed detent 22! to engage an opening in the bracket 222 for maintaining the member 222 in its declutched position. The conf trol 239 is moved to its clutching position causing the members 282 and 255 to mesh, when it is v desired to displace the lm 2.363 by actuation of the shaft 256. Y

Referring to Fig. 1, the shaft 256 is rotatably carried by other supports 292 xed to the base 2. Axial displacement of this shaft is prevented by fixed collars 29d. The wheel 282 is provided at one side with a clutching portion 295 to cooperate with a clutching member 295 slidably keyed to the shaft 268. Axial displacement of this wheel is prevented by an inner xed collar 257. Movement of the member 296 to force it in meshing engagement with the member 295 is provided vby a spring 255, properly positioned on the shaft 256 by a xed collar 350, but the member 295 is normally restrained from such movement by a bar 35|, on the cam end of which normally bears a pin 382 outwardly extending from the member 29S. The bar 38| is slidably mounted in a support 301i xed to the base 2 and is provided with a notch normally engaged by a latch 395 slidably guided on the support SII. The latch 305 is actuated, as will be seen, at a predetermined moment to release the bar 35|, which then moves with the pin 392 and member 295 under the influence of the spring 299. Upon rotation of the shaft 246, the pin 352 rides off the bar Sill, which is then restored to its normal posi- 'tion by a spring 356 acting on a pin S'i fixed to the bar SBI. The spring 366 is attached at one end to the support 3DS and the pin 301 projects through a slot S09 formed in said support 304i.

Referring to Figs. 4 and '7, the shaft 55 carries at its outer end a gear SII removably secured to said shaft, as by a key SI2 and nut SIS. The gear S|| meshes with a gear SI5 removably mounted on a xed shaft SIS (Fig. 9), extending from the side plate 8. A bell-crank Sli is pivotally carried by the side plate 8 and has an arm SIa normally positioned in the path of movement of a pin SIS extending laterally from the gear SI5, which is rotatable in the direction of the arrow in Fig. 9. To the other arm 3WD of said bell-crank is pivotally attached the upper end of a vertical rod S25, which, as illustrated in Figs. l and 16, extends through the base 2 and is pivotally attached at its lower end to one end of a link 32| pivotally carried beneath the base 2. The link 32| at its other end is pivotally attached to another link 322, which is pivotally connected to and serves to actuate the latch 305. A spring S24, acting on a collar 325 fixed to the rod 325, maintains the latch 355 in its normal lowermost position engaging the aforesaid notch in the bar 35|, the rod S20 then being in its normal uppermost position.

Each time the arm Sila is actuated by the pin SIS, the downward movement of the rod 32B, against the force of the spring S24, causes the latch 35 to unlock the bar 36|, this, as has been seen, permitting the shaft 246 to rotate, the control 289 being assumed in clutching position. Upon the pin 302 riding off the bar 36| and the pin SIQ riding off the arm SI'Ia, the latch 385 is restored to its normal position in locking engagement with the bar 35|, by reason of the action of the springs S55 and 324. The shaft Zi rotates exactly one revolution, further rotation being prevented because of the cam action of the bar SBI on the pin 352, which causes the latter to declutch the member 296 from its cooperating member 295, as well as resume its normal position on the bar. This full revolution of the shaft 246, as has been seen, displaces the lm 23E and brings another of its picture areas into position before the projecting means 220.

Obviously, the gears SII and SI5 are caused to be rotated each time the pedal 80 is depressed by the operator. However, in View of the fact that the film 235 may bear a given number of addresses or records in each of its picture portions, it may not be desirable to have the pedal 80 cause actuation of the shaft 24B each time or on every occasion it is depressed, but only after al1 the projected records of one picture area have been copied on the typewriter. Now, observing that the gears SII and SI5 go through the same extent of rotation each time the pedal is depressed, it necessarily follows that they may be so chosen as to cause a denite relation between the number of times the pedal is depressed and the number of times the shaft 246 is actuated. Thus, the number of records in a picture area of the nlm dictates the ratio of pitch line diameters or of number of teeth the gears SII and SI5 should bear. In the embodiment of the invention illustarted, the gear SI5 carries six times as many teeth as the gear Si I. Observing that the gear SII rotates with the shaft 66 one complete revolution each time the pedal 80 is depressed, consequently the shaft 2136 is rotated and the film 23! displaced the distance of one of its picture areas once for every sixth time the pedal 8D is depressed. This arrangement of gears SII and SI5 evidently provides for six records in each picture portion of the film. Should the succeeding lm or a particular sequence of the same film differ in the'number of records per band portion, the gears 3| I and SI5 are replaced by a new set bearing the proper ratio to one another, the replacing gear SI5 being also provided with a pin SISB. For example, if it is desired to have the lm advanced to cause a different picture area to be positioned for projection each time the pedal is operated, the new gears S|| and SI5 should be identical to one another.

Preferably, the idle position or positions of the pin 3|9 are such that it bears against or is close to the crank arm 3|'Ia prior to the rotation of the gear SI5 causing displacement of the film, so that said pin may rock said arm at the start or soon after the start of such rotation. Obviously, the radial position of the pin 3| 9 and the construction of the arm Sl'la are such as to permit the use of dierent size gears SI5.

As best illustrated in Figs. 13 and 14, a shutter or band S26 of suitable sheet material, such as the trade product known as Celluloid, is mounted for travel behind the screen.224 between two rollers 321 and S29 rotatably mounted in the side walls of the casing portion 22727 and to which opposite end edges of said band are respectively secured. The lower part 325s of this band is opaque, except at a central portion S35, which is transparent and of such dimensions as to permit projection, on the screen 224, of only one of the addresses or records contained in a picture area of the lm 235 (see Fig. 3). The upper part 326D, shown wound on the upper roller S23 in Figs. 13 and 14, is transparent and, as will be seen, may be caused to be positioned behind the screen 224 to permit projection thereon of the entire extent of each picture area. The upper roller 329 is equipped with a spring 33 I which serves to wind the shutter on the surface of said upper roller, as well as to keep it taut between the two rollers. A pin 332 iixed to the lower roller 32'! cooperates with an adjustable stop or crank-arm 334 to arrest or limit the winding action of the spring 33|. This stop S34 is formed at the inner end of a rod 335 threaded through the front of the projector box and carrying a hand-wheel 336 at its outer end. A locknut 331 secures the rod in its adjusted position.

The lower roller 32? is provided at one side with a ratchetwheel 339 xed to its shaft. Normally engaging said ratchet 339 are a pair of dgs, 349 and 3M, the respective purposes of which are to intermittently displace the two rollers and shutter and to maintain those' parts in their displacedVY positions, against the force of the spring 33B. As will be moreclearly under- `stood, at a predetermined moment these dogs are causedto disengage the ratchet `m39, the rollers and shutter then returning under theninfluence of the spring 33E to their'original positions, as determined by the adjustable stop 334. Thus, the first or uppermost position of the transparent shutter portion 339 back of the screenr224 is adjustable by thefhandntheel 335.

Referring to Figs". 4 andf5, the aforesaid memberv I9! carries ai' crank-stud 345 on which is pivotally mountedE the lower end of a link 349. Referring particularly to Figs. 3 and 15, the link 345 at its upper Yendfis pivotally attached to a crank or rocking Y:arm 341V xed to a horizontal shaft 349'fcarried by the side plates 8 and 3a at their upper edges.V This shaft 349 has also xed thereto alsimilar arm 359 to which is pivotally attached the lowerY end of a link 35| (see Figs. 1 and 2). :as best illustrated in Figs. 13 and 14, this link 35! extends through an aperture in the projector box and is pivotally carried at its :upper end by a bolt 352 adjustably secured, as bya nut 353, in the slot 354 formed in a lever or crank 355 loosely carried by the shaft of the loweri'roller 32?. Access to the nut 353 for its'adjustrnent is had through a side door 357 (Fig. Yi2) of the projector box 221. The crank 355 carries at its end the dog 340, a spring 35E attached to that dog 349' and to the crank 355 causing the dog 349 to normally engage'the ratchet wheel 339.

As illustrated in Figs. 1 and 9, a'link 358 is pivotally attached at its lower end to the arm 3H?) of the bell-crank 3H. Referring to Figs. 1 and 15, this link 358 at its upper end is pivotally attached to a crank or rocking arm 359 xed to a second horizontalrshaft 35i) carried by the side plates 8 and 8a at their upper edges. A similar arm 36| is fixed te the shaft 35E) and to this arm 35i is pivotally attached the lower end of a rod 342. As shown in Figs. 13 and 14,'the rod 332 at" its upper eno portion extends through an aperture in the projector box through the outerv arm 362aof a Vpivroted link 362, the inner end of which is adapted'to slidably cooperate with the outer arm; 349e of the dog 349. The rod 3132 further extends through the outer arm 34m of the dog 35 I, which is pivotally carried by a fixed bracket 364. A spring 365, attached to the arm 34m and to a fixed bracket 366, causes the dog i 35i to normally engage the ratchet wheel 339. Fixed collars 361;'and 359 are carried igy the rod 342 and are so positioned that, upon their downward movement with the nrod, they actagainst the forcen of the springs 356 and 365 to rock the arms 352e; and 34m andfi thereby cause the dogs 349 andYY 31H to move out of engagement with the ratchet 339, respectively. YUpon release of the rod 342, the springs 355 and 365 restore the dogs to their normal positions on the ratches 339. t

The rod 353 is actuated only when theapparatus operates to'Y displace the film 230 as a result of the pin 349 striking the bell-crank arm tllla, Vand on each of these occasions is caused to quickly move .downwardly and acts, through the intermediary5 of the crank 359. shaft 359,

crank 33t and rod 342, to release the ratchet 339 from' the dogs 340 and 34i,jsaid rod 358 and parts movable therewith being obviously restored by spring action to their normal positions when the pin 3i9,leaves the surface of the arm Sila. .On the other handobserving that reciprocating motion is imparted to the rod member Sdby a rotation di the crank member IGI and that the latter rotates one complete revolution during each operation of the apparatus (the gears l2 and 9i' bearing a oneto one ratio to one another), said rod 343 acts,.through the intermediary of the crankl', shaft 349, crank 350 and rod 35i, to move the slotted lever 355 once in one direction and thereafter once in the opposite directionlto its starting position, each time the pedal 99 is'depressed by the operator. Now, duringfjeach operation of the apparatus which does effect release of the ratchet 339, the rst movement of the lever 355 causes the dog 355 to jrotate the ratchet 339 and roller 331 tc lower the position of the transparent shutter por-Y tion 335 back ofthe screen, and the second move'- ment of the lever 355 brings the dog ,340 back into initial position on the ratchet 339 held inY its displaced position by the dog 34H. *,The exe the shutter portion 330 each of its successively lowered positions. Thiis, in turn each of the records Yof the picture portion, positioned in cooperative relation with the projecting lens system 220, is projected and brought into Viewof the screen 224. When theishutter portion 339 has reached its lowermost lposition, i. e., when the last record of Ysaid picture portion has in this manner been exposed to view, the next operation of the apparati-is functions not only to properly displace the nim .239 to bring the succeeding pictureiiarea into position before said device 223, as has @een seen, but'alsoto release the ratchetV 339 by automatic actuation of the rod 342, where;Y by theshutter portion 339 is raised by spring action to its original position, as determined bz the stop 334, and exposes to view the rst record of saidY succeeding area. It is to be particularly noted that, therefore, the same control, namely the pedal 35, which operates to remove a type,- written'sheet from andto insert a newione into Vthe typewrite i, also operates move both lm to its uppermost position. Y

As best shown in Figl 13, the rod 342 is provided at its lc-jwer eno",V with an elongatedslot 379 through which extends the pin or element connecting therod to the crank Stil.v Such connection normaliy rests at the bottom ofY said slot 319, whereby manual movement of the rod to removen the dogs 34) and 34H from their ratchet 333 is permitted. When automatic actuation of the shntter is not desired, the rod 342 may be maintained in its ratchet releasing position a control, comprising a hand-wheel 31| rotatably carried by the bottom of the casing portion 221b and a projection 31m cooperating with a'pin 342m fixed to the rod 342. The lower roller 321 is provided at its other side with another ratchet-wheel 312 fixed thereto orto its shaft and with a hand-wheel 314 by means of which it may be rotated. A dog 315 may be pivoted into and out of engagement with the latter ratchet 312 by means of a hand-wheel 316. Thus, with the stop 334 pivoted out of the path of the pin 332, the shutter may be Wound on the roller 321, as when it is desired to position its transparent portion 32th back of the screen 224, for example when each of the picture areas of the film contains but a single record. When automatic operation of the shutter is again desired, the dog 315 is swung out of engagement with its ratchet 312, the control 31! is operated to restore the dogs 33D and 34| on their ratchet 339, and the wheels 33E and 314 rotated to return the stop 333 and the pin 332 to their operative positions. The wheel 314 may be used to lower the position of the transparent shutter portion 339, whenever desired. If required, said portion 33@ may be positioned whenever desired back of the screen and its automatic operation prevented. Manual operation of the rod 342 facilitates adjusting the relative positions of the rod 35| and slotted lever 355.

t now becomes apparent that I have provided an apparatus satisfying the various objects of the invention.

What is claimed is:

1. The combination with a typewriter having a platen roll and means for guiding a sheet to said platen roll, of an apparatus for automatically placing said sheet in writing position on said platen roll comprising control means, a roller to cooperate with said platen roll in starting displacement of said sheet on said platen roll, a sheet stop adjacent said platen roll and normally out of sheet-arresting position, means rendered operative by said control means for moving said roller relatively to said platen roll to permit said sheet in its travel on said guiding means to partially pass said roller and for moving said sheet stop into sheet-arresting position to block further ingress of said sheet, means rendered operative by said control means for moving said sheet stop out of sheet-arresting position and for moving said roller into cooperativerelation to said platen roll and into impinging relation to said sheet, means rendered operative by said control means for rotating said platen roll, and means for adjusting the extent of rotation of said platen roll.

2. The combination with a typewriter having a platen roll, of a sheet-supply station, a sheetstorage station, a control, means rendered operative by said control for rotating said platen roll, means operating in response to each actuation ofsaid control for transferring one sheet from said sheet-supply station to said platen roll, means for gripping a sheet positioned on said platen roll .as it is ejected by such rotation of said platen roll-and conveying it to said sheetstorage station, a roller to cooperate with said platen roll in starting displacement on said platen roll of a sheet transferred to said platen roll and normally cooperating with said platen roll, a sheet stop ahead of said roller and normally out of sheet-arresting position, means rendered operative by said control .and operating only after travel of an ejected sheet past said roller and said sheet stop for moving said roller relatively to said platen roll to permit a sheet transferred to said platen roll to partially travel past said roller and for moving said sheet stop into sheet-arresting position to block further ingress of a sheet transferred to said platen roll, means rendered operative by said control for restoring said roller and said sheet stop to their respective normal positions with said roller engaging a sheet transferred to said platen roll, and means for insuring the stacking of the sheets at said sheet-storage station in a superimposed relation according to their order of ejection from said platen roll.

3. The combination With a typewriter having a platen roll and means for guiding a sheet to said platen roll, of an apparatus for automatically placing said sheet in writing position on said platen roll and comprising control means, means rendered operative by said control means for rotating said platen roll, a sheet stop adjacent said platen roll and normally out of sheet-arresting position, means rendered operative by said control means for cooperating for moving said sheet stop into sheet-arresting position to arrest said sheet in its travel on said guiding means and for thereafter moving said sheet stop out of sheetarresting position, and means to cooperate with said platen roll in displacing said sheet thereon from its arrested position.

4. The combination with a typewriter having a f relatively to said platen roll to permit said sheet 4' in its travel on said guiding means to partially pass said roller and for moving said sheet stop into sheet-arresting position to arrest said sheet against further ingress, means rendered operative by said control means for moving said sheet 5 stop out of sheet-arresting position and for moving said roller into cooperative relation to said platen roll and into impinging relation to said sheet, and means rendered operative by said control means for rotating said platen roll.

5. The combination with a typewriter having a platen roll, of a sheet-supply station, a control, means rendered operative by said control for transferring one sheet from said station to said platen roll each time said control is actuated, means rendered operative by said control for rotating said platen roll, a sheet stop adjacent said platen roll and normally out of sheet-arresting position, means rendered operative by said control for moving said sheet stop into sheet-arresting position to arrest the transferred sheet and for thereafter moving said sheet stop out of sheet-arresting position, and means rendered operative by said control for cooperating with said platen roll in displacing the transferred sheet thereon from its arrested position.

6. The combination with a typewriter having a platen roll, of a sheet-supply station, a control, means operating in response to each actuation of said control for transferring one sheet from said station to said platen roll, a roller `adapted to cooperate with said platen roll in starting displacement of each transferred sheet on said platen roll and normally cooperating with said platen roll, a sheet stop ahead of said roller in the direction of travel of the transferred sheet:

and normally out of sheet-arresting position, means rendered, operative by said control for moving said roller relatively to said platen roll to permit the transferred sheet to partially pass said roller and for moving said sheet stop into sheet arresting position to stop movement of the transferred sheet, and means rendered operative l by said control for restoring said roller and said stop to their respective normal positions with said roller engaging the transferred sheet on said platen roll.

7. The combination with a typewriter having a platen roll, of a sheet-supply station, a control, means operating in response to each actuation of said control for transferring one sheet from said station to saidplaten roll, a roller adapted to cooperatewith said platen roli in starting displacement of each transferred sheet on said platen roll and normally cooperating with said platen roll, a sheet stop ahead of said roller in the direction of travel of the transferred sheet and normally out of sheet-arresting position, means rendered` operative by said control for moving said roller relatively to said platen roll to permit the transferred sheet to partially pass lsaid rollerV and for moving said sheet stop into sheet-arresting position to stop movement of the transferred sheet, means rendered operative by by said control forrestoring said roller and said stop to their respective normal positions with said roller engaging the transferred sheet Aon said platen roll, and means rendered operative by said y control for rotating said platen roll.

8. The combination with a typewriter having a platen roll, of aV sheet-supply station, a control, means operating in response to each actuation of said control for transferring one sheet from said station to said platen roll, a roller adapted to cooperate with said platen roll in starting displacement of each transferred sheet on said platen roll and normally cooperating Wit-h said platen roll, a sheet stop ,ahead of said roller in the direction of travel of the transferred sheet and normally ontv of sheet-arresting position, means rendered operative by said control for moving said roller relatively to said platen roll to permit the transferred sheet to partially pass said lroller and for moving said sheet stop into sheet-arresting position to stop movement ofthe transferred sheet, means rendered operative by said control for restoring said roller and said stop to their respective normal positions with said roller engaging the. transferred sheet on said platen roll, means rendered operative by said control for rotating said platen roll, and means for adjusting the extent of rotation ofsaid platen roll. Y

9. The combination with .a typewriter having a platen roll, of a sheet-supply station, a control, means rendered operative by said control for transferring one sheet from said station to said platen roll-each time said control is actuated, a feed 'stop adjacent said platen roll and normally out of sheet-arresting position, means rendered operative by said control for moving said sheet stop into 'sheet-arresting position to arrest the transferred sheet and for thereafter moving said sheet stop out of sheet-arresting"position, and means rendered operative by said control for cooperating with said platen roll in displacing the transferred sheet thereon from its arrested position.

l0. In combination with a typewriter having aV platen roll, of a sheet-supply station, a sheetstorage station, a control, means rendered operative by said control for rotating said platen roll, means operating in response to each actuation of said control for transferring one sheet from said sheet-supply station to, said platen roll, meansV for gripping a sheet positioned on said platen roll as it is ejected by such rotation of said platen roll and conveying it to said sheet-storage station, a roller to cooperate With said platen rollk Vand for moving said sheetV stop into sheet-arresting position to block further ingress of a sheet transferred to said platen roll, and meansrendered operative by said control for restoring said roller and said sheet stop to their respective normal positions with said roller engaging a sheet transferred to said platen roll. l

ROBERT STUART.

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