US846012A - Book-holder for adding-machines. - Google Patents

Description

PATENTED MAR. 5, 1907.

. 7 32: Q R a N U h l l l wfiwhw m .W m E IHIFVI. I 1! v I I m m m A .w T m. m

w Z I 0 Y B Z. GRAIN.

BOOK HOLDER FOR ADDING MACHINES. APPLIOATION FILED JUNE 23 1906.

PATENTED MAR. 5, 1907.

Z. GRAIN.

BOOK HOLDER FOR ADDING MACHINES. APPLIGATION FILED JUNE 23. 1906.

6 SHBETSSHEET 2.

Alfomey No. 846,012. PATENTED MAR. 5, 1907.

'Z. GRAIN. BOOK HOLDER FOR ADDING MACHINES.

APPLICATION FILED JUNE 23, 1906 6 SHEETS-SHEET S.

No. 846,012. PATENTED MAR. 55, 1907. Z. GRAIN.

BOOK HOLDER FOR ADDING MACHINES.

APPLICATION FILED JUNE 23, 1906.

6 SHEETSSHEET 4 INVENTOR Zamm mm.

No. 846,012. PATENTED MAR. 5, 1907. Z. GRAIN.

BOOK HOLDER FOB ADDING MACHINES.

APPLICATION FILED JUNE 2a, 1906.

6 SHEETS-SHEET 5.

[NVE/VTOR Zardm 5mm.

Alforuey No.86,012. 1 PATENTED MAR. 5, 1-907.

' z. GRAIN.

'BOOK HOLDER FOR ADDING MACHINES.

APPLIUATION FILED JUNE 23. 1906.

6 SHEETSSHBET 6.

.E/l l WITNESS s.- INVENTOR 5 Zardm mm.

I J l r f Alzomefi STATES PATENT OFFICE. I

ZABDIA GRAIN,

OF MURPHYSBORO, ILLINOIS, ASSIGNOR' or ONE-FOURTH TO DANIEL BOWER AND ONE-FOURTH TO A. J. WOODARD, OF MUR- PHYSBORO, ILLINOIS.

BOOK-HOLDER FOR ADDING-MACHINES.

Specification of Letters Patent.

Patented March 5, 1907.

Application filed June 23, 1906. Serial No. 323,092.

To all, whom, it mag concern:

Be it known that I, ZARDIA GRAIN, a citizen of the United States, residing at Murphysboro, in the county of Jackson, State of Illinois, have invented certain new and useful Improvements in Book-Holders for Adding-Machines, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a book-holder for computing-machines, and particularly to an attachment adapted for use with-machines of this character.

The invention has for an object to provide a book-holding carriage mounted for travel in both vertical and horizontal planes relative to the computing-machine towhich it is attached, together with means'for automatically controlling the movement of said carriage in the operation of the computing-machine. Another object of the invention is to provide an improved construction and arrangement of book-holder rovided with platens ada ted to be inserterf beneath the leaves of the k for retaining the book in proper position Within the carriage.

Other and further objects and advantages of the invention will be hereinafter set forth, and the novel features thereof defined by the appended claims.

In the drawings, Figure 1 is a perspective of the invention with the book-holder removed from the carriage. Fig. 2 is a rear elevation thereof with the book-holder in position. Fig. 3 is a vertical section on the line 3 3, Fig. 2. Fig. 4-is a similar view showing the book-holder removed from the carriage forproper adjustment of the book therein.

Fig. 5 is a detail section showing the mount ing of the back board upon which the book rests. scale, of the locking-latch for the holder when in horizontalv position. Fig. 7 is a detail perspective of the case of the book-holder. 8 is a similar viewof the platens. Fig. 9

is a detail perspective of the holder-frame. Fig. 10 is a cross-section on the line 10 10,-

' Fig. 8. Fig. 11 is a detail elevation'ofthe column-std mechanism for the carriage.

Fig. 12 is a etail perspective of theflogs carried bythis mechanism. Fig.13ie a similar view of the rear face 'of the colgmn sto'p and its supporting-rack. Fig. 14 is a view 'the line 15 15, Fig. 11.

'tion of this invention this. machine is s Fig. 6 is a similar view, on an enlarged.

of the operating-lever for the stop mechanism. Fig. 15 is an enlarged cross-section on Fig. 16is a detail rear elevation of the escapement mechanism controlling the vertical movement of the carriage. Fig. 17 is a front elevation of. the same. Fig. 18 is a section of the parts shown in Fig. 17 with the controlling-gear in mesh. Fig. 1 9 is a similar view with this gear thrown out of mesh to receive the frame; and Fig. 20 is a detail elevation of the rear of the carriage, showing the platens supported thereon. 7

Like numerals of reference indicate like parts throughout the several 7 views of the drawings.

The numeral 1 designates a computingmachine, which may be of any desired character-for instance, the type known as the Burroughs machine, which is provided with the operating-lever 2 at one side, by

which the printing operation is controlled after the keys 3 have been properly operated to set the numerals. In the present ap licaliown assupipprted upon a board or base 4, carried by a ed frame '5, having at its opposite ends standards 6 and 7, the latter being provided with a rack 8, as hereinafter described.

The machine may be connected to'this standaid in any desired manner-forinstance, by braces9 at opposite sides thereof-and upon the standards the vertical bars 10 of the carriage-frame 11 are slidingly mounted with the usual ball-bearings, if desired. The top and bottom rails of this frame are connected bythe vertical bars 12, within which frame the carriage 13 is adapted to travel, thetop and bottom rails 14 thereof being grooved to receive the ball-bearings 15, as shown in Figs.

ably mounted on the vertical bars 12 by means of set- screws 16 and 17, the latter extending through anelongated slot in the face I I 3 and 4. The rail 11 of the frame is adiustof the frame-Hand connected by a flexible strip. 19' with a depending hook 20-from the [0O issecured by aracket 19 to the under face I For the purpose of controlling the travel ofv the carriage within its frame a column-stop mechanism is provided and is adapted to be automatically controlled from the comput lug-machine by means of the crank-arm 21, carried upon an oscillating shaft 22, extended from the mechanism within the ma chine, and connected by a link 23 with the angle-arm 24, disposed upon a pivoted bar. 25, which extends for the length of the standard and has its bearings 26 at the opposite ends thereof. This bar s shown in detail in Fig. 11 and in the operation of the computing-machine is adapted to swing toward and from the standard upon which it is mounted. The free edge of this bar is disposed in the path of the rock-lever 27, which is pivotally mounted upon the bearing portion 28 intermediate of its ends by means of a bearing 29,

applied to the vertical bar of the carriageframe 10, and the upper end 30 of this lever connects with the colun'in-stop mechanism, as hereinafter described. The lower end of this bar is provided with a casing, as shown in Figs. 14 and 15, at 31, within which the pawl 32 is pivotally mounted at 33 and provided with an inclined face 34 and a stop-lug 35 to limit its outward movement. The pawl is normally held in its outward position, as shownin Fig. 15, by means of a spring 36, carried by the casing and bearing against the under face of the pawl. Beyond this casing a plate 37 is formed and provided with an elongated slot 38, through which the stop-pin 39 extends, said pin being mounted in the frame and provided with a head 40 to limit the outward swing of the rock-lever. It will thus be seen that in the oscillation of the bar 25 the rock-lever is swung on its pivot until the bar passes the pawl, and this movement of the rock-lever is communicated to the stop mechanism.

The column-stop mechanism hereinbefore referred to comprises the horizontally-disposed rod 41, adapted to oscillate in bearings 42 and also to have a limited reciprocatory movement therein. This rod is provided with a parallel connecting-pin 43, pivotally connectedwith the free end of the rock-lever 30, as shown at 44 in Figs. 1 and 11.. The rod 41 is provided with a cushioning-spring 45, bearing at one end against a bearing 42 and adapted to be adjusted in tension by the lock-nuts 46, threaded upon the rod. The rod also carries a dog-casing 47, within which the dog 48 is pivotally mounted at 49 and normally thrown outward from said casing by means of a tensionspring 50 bearing thereon. This dog 48 is disposed at the lower portion of the casing, while at one side of the casing a secondary dog 51 is provided, which in a swinging movement of the rod is adapted to be throwp into the plane previously occupied by dog 48, so as to engage one of the column-stops 52, any desired number of these-stops being the frame 11.

i tact with the pin 7.4, by which it is held. "It

used, depending upon the number of columns to be printed. These stops are retained in position upon a slideway 53, extending longitudinally of the top rail 14 of the carriage, and which way is provided with a flange 54, having an interiorly roughened or toothed face 55, adapted to co6perate with a similar face 56, carried by the flange 57 of the stop. These teeth or engaging faces are preferably disposed diagonally to a vertical line, as shown in Fig. 13, so as to retain the stops 52 at any position they may be disposedthera on. The casing 47 is normally thrown outward from the carriage-frame 11, upon which it is mounted, by means of a spring 58 at. the rear thereof, which spring in its action also restores the rock-lever 27 to its initial position. From the above mechanism it will be seen that an oscillation of the dogcasing 47 in one direction will carry the dog 48 out of engagement with the first stop 52 and permit a movement of the carriage until the second stop engages the secondary dog 51, by whicli the carriage is held until the casing is restored to its normal position, when this second stop will move into engagement with the dog 48 in position for a subsequent operation.

For the purpose of controlling the vertical movement of the carriage line by line the frame 11, carrying the same, is slidingly mounted upon the standards, as before described, the standard 7 being provided with the rack 8, as shown in detail in Figs. 16, 17, 18, and 19, with which a pinion 60 is adapted to mesh, said pinion being also in mesh with the gear 61, mounted upon the, fixed part or standard 10 by means of a bearing-bracket 62. The shaft of this gear is-provided with an escapement-wheel 63, adapted to co6perate with the dog mechanism 64 of ordinary construction, the shaft 65 of-which carries at its rear a trip-lever 66, having oppositelyinclined faces 67 and 68 and normally held at one extreme of its travel by means of a no tension-spring 69, extending therefrom to This trip-lever is adapted to be engaged by one or more stops 70, pivotally mounted upon the top rail 14 of the carriage at 71 and extending into the path 115 of the trip-lever, whilethelower end thereof abuts against/the stop-lug 72. A plurality of these stops are provided in order that theproper spacing between lines may be determined. For instance, as here shown, two stops may be used to effect a full space, while if a half-s acing is desired in order to interline one o the stops maybe thrown, out ofoperative position, and thus held by means'of apivoted arm 73, adapted to lie beneath the stop, as shown at the right of Fig. 16, and in contact with the'stop-lug 72, while if the'stop is to be used this arm is thrown away from the lug 72 and in conone tooth of the escapement-whecl.

, at the front of the machine.

' ried by the frame.

will thus be seen that each movement of the trip-lever will oscillate the dog 64 to produce a downward feed of the carriage for \Vhen it is desired to operate these dogs by hand, the same can be readily ell'ccted by means of the hand-lever 75, applied to the shaft 65 carriage and parts supported thereby are to be restored to their initial position, the pinion 60 may be disengaged from its rack 8 by means of the lever 76, upon which the same is mounted at the lower end, said lever having its pivot upon the shaft of the gear 61 and being held normally under tension by means of the spring 77, and it will be seen that a compression of this spring will throw the pinion 60 away from the rack. In order to maintain a proper relation of these parts, a bearing-wheel 78 is carried by the bracket. 79 upon the carriagefr'ame to. engage the rear face of the standard. It will be observed that the vertical feed of the book i brackets 83, carried by thelower rail of the carriage, said brackets being provided with an elongated bearing-recess 84, as shown in Fig. 3, whereby a pintle may be removed from the bearings by a longitudinal movement therein. This frame is adapted to receive the book and is provided at its pivot end with a cross rod or bar 85, mounted in the side walls of the-frame and in the bracket 86 ,carried thereby, upon which the platens 87 are pivoted at each side of the bar 88, car- The se platens are provided with pivotingbearings 89, as shown in Fig. 8, and are mounted upon the carria e, as shown in Fig. 4, so as to lie beneath t e sheet of the bookwhich is to receive the impression from the computingmachine. The platens are each tapered in cross-s'ectiontoward the central bar 88, as shown in Fig. 10, so as to place their smallest diameter next the bound edge of the sheet. In other I words, they taper inwardly toward the center'of, the frame. Upon the extended ends 90 of the rods the casing 91 is mounted by means'of the elongated slots 92 in the side walls thereof, said casing being provided with the central bar 93 in alinementwith the bar 88 and extending from a cyossbar94.

The casing fits snugly over the frame and.

is provided with a lug9-5 to 'limit its movement relative to the carriage, as shown in \Vhen the 5 Figs. 3 and 4. This casing holds the sheet to receive the printing firmly against the platens.

The book-holder and parts carried thereby are adapted to be raised into the printing po sition (shown in Fig. 3) in the carriage by means of the tension-arm 96, pivotally mounted at 97 upon the lug 98, carried by 3 the bar 14 of the carriage, said arm being provided with a stop-lug 99, adapted to en gage a cross-bar 100, carried by the frame below the track .or way thereof. The upper end of this arm is pivotally connected at 101 to a sleeve 102, 'slidingly mounted upon the rod 103, carried by bearings 104 upon the bar 88 of the frame 80. The coil-spring 105 extends from one of these bearings to the sleeve 102, so that when the book-holder is lowered into the position shown in Fig. 4 the spring is placed under tension. When in this position, the holder is adapted to be locked and held against the automatic raising by the spring by means of the pivoted catch 106,.mounted on the side of the bar 88 and adapted to engage the to0th'107, carried by the sleeve 102, and normally held in contact with said tooth. by the spring 108 hearing upon the latch. The crank-arm 109 from this latch is connected by rod 110 with the operating-lever 111, pivotally mounted at 112 upon the bar and adapted to cooperate with the fixed handle 113, carried by the holder-frame. When it is desired to raise the carriage into the position shown in Fig. 3, it is only necessary to release the latch 106, and the spring will throw the book-holder upward into engagement with the carriage, the position of the tension-arm being such as to prevent a return movement except when drawn backward by an exterior force.

The book, as shown at 114 in Figs. 3 and 4, is supported upon back boards 115, Figs. 2 and 3', these boards being provided at opposite ends with the crossed levers 116,..Fig. 5, pivotally mounted at 1 17 upon the board-and at 118 upon the frame 80, while the .opposite ends of these levers have a sliding and pivotal bearing at 119 on the .board' and 120 on the frame; These levers provide for the movement of the boards toward and from the casing of the book-holder in parallelism, the levers being pivoted togetherat their point of crossing 121. The boards are normally pressed inward toward the casing by means of the spring-levers 122, as shown in Fig. 2, having a bearing 123 at the center of the boards and'adjustably secured to the tension-heads 124, which are mounted upon the rods 12 5, carried by the brackets 126 of the frame 80, said headssbeing retained under tension by means of thecoil-spring 127, cons nected thereto at one endme'aring against the frame at its opposite end. If it is desired to use he attachment without the book-holder,

the samecan be" readily removed from the carriage and anordinary platen 129 of any desired construction mounted upon the brackets 130, carried by the rear of the carriage-frames 13, as shown in Figs. 1 and 20. In the operation of the machine when it is desired to apply a book thereto the holder is swung downward, as shown in Fig. 4, and the casing and platens thereof swung upward to permit the placing of the book upon the back boards. The platens are then swung into contact with'the book with the pages to be printed upon the top of the platens and the casing closed, so as to hold the book in smooth firm contact, owing to the tension of the back boards against the frame and casing. The latch is then released, permitting the bracket of the tension-arm to automatically throw the book-holder into vertical position within the carriage. The carriage frame is then raised, so as to bring the bottom line of the book in printing position, and the carriage moved to the extreme right of its travel. The keys of the computing ma chine are then operated to set up the proper numerals to be printed, and upon the operation of the lever of such machine the printing mechanism thereof is thrown into contact with the book in the usual manner. In the return movement of this lever the pivoted bar carried by the standards is oscillated, which in turn operates the columnstop dogs, permitting the carriage to move to the left into the next position for printing. This continues for the desired numbef of columns to be printed and effects an automatic feed of the carriage by the usual operation of the computing-machine. In the return movement of the carriage from left to right the stops carried thereby actuate the trip-lever, which operates the escapement mechanism controlling the rack and pinion to permit the proper downward movement of the carriage-frame and book carried thereby into the next lowest position for printing. It will thus be seen that the book while supported in a vertical position is adapted to receive the impression from the computingmachine and also the totals or results ordinarily obtained in the operation of such a machine. The construction and arrangement of parts is particularly adapted to render the feed of the carriage in both a horizontal and vertical plane automatically relative to the machine to which it is attached, while the book-holding means effectually presents the sheet thereof to be printed in proper position to receive the impressions from such a machine.

Having now described my invention and set forth its merits, what I claim, and desire" to secure by Letters Patent, is

1. In a device of the class described, a ver tically-dispos'ed carriage, means for effecting a travel thereof in a horizontal plane, and

means automatically operated in :the horizontal travel of the carriage for controlling the travel thereof in a vertical plane.

2. In a device of the class described, a vertically-disposed carriage, means for effecting a travel thereof in a horizontal plane, a plurality of devices upon the carnage for controlling a travel thereof in a vertical plane during i ts horizontal travel, and a book-holder mounted in said carriage.

3. In a device of the class described, fixed standards, .a carriage -frame mounted to travel vertically thereon, a carriage mounted to travel horizontally on said frame, means upon the frame to control said horizontal travel, and connections from an auxiliary machine disposed upon the standards in the path of travel of the controlling means upon said frame.

4. In a device of the class described, fixed standards, a carriage frame mounted to travel vertically thereon, a carriage mounted r .to travel horizontally on said frame, means upon the frame to control said horizontal travel, connections from an auxiliary machine disposed upon the standards in the path of travel of the controlling means upon said frame, means upon one standard to control the vertical travel of the frame thereon, and means upon the carriage for automatically operating saidvertical controlling means in the horizontal travel of the carriage.

5. In a device of the class described, a vertically-disposed carriage, means for effecting a travel thereof in a horizontal plane, means for effecting a travel of said carriagein avertical plane, and a book-holder frame pivotally mounted at the lower portion of said carriage to open in a horizontal plane, and means upon the carriage to retain the holderframe in vertical position.

6. In a device of the class described, a vertically-disposed carriage, means for effecting a travel thereof in a horizontal plane, means for effecting a travel thereof in a vertical plane, a book-holder frame pivotally mounted at the lower portion of said carriage to open into a horizontal plane, and a tensionarm upon the carriage provided with a spring for automatically retaining said holder in vertical osition. r

7. -1 a device of the class described, a vertically-disposed carriage, a book-holder pivotally mounted in said carriage, a tensor;- arm provided with a spring for automatically retaining said holder in a vertical position, and a locking-latch carried by said holder to engage said arm and retainthe holder in. a

horizontal position.

8. In a device of the class described, a vertically-disposed carriage, a book-holder pivotally mounted in Sflld carriage, ,a tensionarm provided witha spring for automatically retaining said holder in a vertical position, a locking-latch carried by said holder to engage said arm and retain the holder in a horitically-disposed carriage mounted for-"travel in both vertical and horizontal planes, means for controlling said travel 1n a horizontal plane, an escapement mechanism for contrelling said travel in a vertical plane, means upon the carriage for automatically actuating said escapement mechanism, a print ing mechanism, and means actuated therefrom for controlling the horizontal travel of said carriage.

10. In adevice of the class described, a vertically-disposed carriage, means for efiecting a travel thereof in a horizontal plane, means for controlling a travel thereof in a vertical plane, and means u on the carriage to automatically actuate t e vertical feed thereof. y

1 1. In a device of the class described, 'fixe standards, a carriage-frame mounted to travelvertically thereon, and a carriage mounted to travel horizontally in said frame.

12. In a device of the class described, fixed standards, a carriage-frame mounted to travel vertically thereon, a carriage mounted to travel horizontally in said frame, a rack upon one of said standards, a pinion upon said frame engaging the same, an escape- 'ment mechanism controlling said pinion, and

means disposed upon said carriage to operate said escapement.

- 13. In a device of the class described, standards, a carriage-frame mounted to travel vertically thereon, a can'i'age mounted to travel horizontally in said frame, a rack upon one of said standards, a pinion engaging the same, an escapement mechanism controlling said pinion, a trip-lever carried by said escapement, and a stop upon the carriage to engage said lever.

14. In a device of the class described,

standards, a carriage-frame mounted to navel vertically thereon, a carriage mounted to travel horizontally in said frame, a rack upon one of said standards, a pinion engaging the same, an escapement Inechanism controlling said pinion, a trip-lever carried by said escapement, and a pivotally-mounted stop upon said carriage adapted to be thrown into or out 'ofthe path of said trip-lever.

15. Ina device of the class described, standards, a carriage-frame mounted to travel vertically thereon, a carriage mounted to travel horizontally in said frame, a rack upon one of said standards, a pinion engaging the same, an escapement mechanism controlling said pinion, a trip-lever carried by said escapement, a pivotally-mounted stop upon to engage and retain said stop out of operative position.

. -16. In a device of the class described,

to travelhorizontally in said frame, a. rack upon one of said standards, a inion engaging the same, an escapement mec anism controlling said pinion, a trip-lever carried by 'said escapement, a pivotally-mounted stop upon said carriage adapted to be thrown into or out of the path of said trip-lever, means to engage and retain said stop out of operative position, a column-stop upon said carriage, and a cooperating dog mechanism carried by the frame to engage said stop.

17. In a device of the class described, a carriage-frame, a carriage mounted to travel therein, a plurality of column-stops adjustably supported upon said carriage, a dog mechanism mounted upon said frame and provided with a yieldingly-mounted dog and rigid dog in parallel planes to cooperate with said stops, and means to oscillate said mechanism.

18. In a device of the class described, a standard, a vertic ally-disposed carriageframe thereon, a carriage mounted to travel insaid frame, aplurality of column-stops adj ustably supported upon said carriage, a dog mechanmounted upon the frame to oscillate said dog mechanism, and means u said standard to engage the lower end 0 said lever at any point in the frame travel.

19. In a device of the class described, a verticallydisposed carriageframe, a carriage mounted to travel therein, a plurality of column-stops adjustably supported upon said carriage,- a dog mechanism mounted upon the frame and provided with a plurality of dogs in different planes to 006 crate with said stops, a rock-lever mounte upon the frame to oscillate said dog mechanism, af-pivotallymounted bar carried by aifix'ed member, and a pawl carried by the lower end of said lever to engage said bar.

20. In a device of the class described, a vertically-disposed carriage-frame, a carriage mounted to travel therein, a plurality of column-stops adjustably supported upon said lever to engage said bar, and means to limit the travel of the lower end of said lever.

21. .In a device of the class described, a vertically-disposed carriage-frame, acamage mounted to travel therein, a plurality of column-stops adjustably supported upon said carriage, a dog mechanism mounted upon the frame and provided with a plurality 0' dogs in different planes to cooperate with said stops, a rock-lever mounted upon the frame to oscillate said dog-mechanism, a pivfor, a standard provided with a rack, a pinion carried by the frame to engage said rack, a gear carried by said frame to engage said pinion, an escapement-wheel mounted upon the shaft of said gear, a dog mechanism to cooperate with said escapement, a trip-lever disposed upon one end of the shaft of said otally-mounted *bar'carried by' a fixed mem- 1 dog mechanism, and a hand-lever carried by ber, a pawl carried by the lower end of said lever, to en age said bar, a slotted plate cari the opposite end thereof.

28. In a device of the class described, a

ried by sai lever, and a headed stop-pin excarriage, a vertically-movable frame theretended through said plate to limit the travel! for, a standard provided with a rack, a pinthereof.

22. In a-device of the class described, a carriage-frame, a carriage mounted to travel therein, a plurality of column-stops carried by said carriage, a casing pivotally mounted upon the frame, a dog pivoted within said casing and projected therefrom under spring tension, a secondary dog disposed at one side of said casing and means for normally retaining said tension-dog in alinement with said stops.

23. In a device of the class described, a carriage-frame, a carriage mounted to travel therein, a plurality of column-stops carried by said carriage, a casing pivotally mounted ,upon the frame, a dog pivoted within said casing and projected therefrom under spring tension, a secondary dog disposed at one side of said casing, a spring disposed between said casing and the frame, a reciprocatory rod upon which said casing is mounted, and a cushioning-spring for said rod.

24. 'In a device of the class described, a carriage provided with a column-stop, an oscillating dog mechanism to 006 erate there-w with, an actuating-lever for sai .meohanism provided with a bearing portion intermediate of its ends, a casing provided at the lower end of said lever, a spring-pressed pawl pivotally mounted in said casing and provided with an inclined outer face, and means to engage said pawl to actuate said lever. I

25. In a device of the class described, a carriage provided with a column-stop, an oscillating dog mechanism to cooperate therewith, an actuating-lever for said mechanism provided with a bearing portion intermediate of its ends, a casing provided at the lower end of said lever, a spring-pressed'pawl pivotally mounted in said casing and provided with an inclined outer face, a longitudinally-extending bar pivoted at one side, and an operatingarm extending from said bar.

26. In a device of the class described, a carriage, a standard provided with a rack, a vertically-movable frame thereon, a pinion carried by said frame to engage said rack, a gear carried by said frame to engage said pinion, an escapement-wheel mounted upon the shaft of said gear, and a dog mechanism to cooperate with said escapement.

27. In a device of the class described, a carriage, a vertically-movable frame there- I ion carried by the frame to engage said rack, a gear carried by said frame to enga e said pinion, an escapement-wheel mounte upon the shaft of said gear, a dog mechanism to cooperate with said escapement, a, trip-lever d sposed upon one end of the shaft of said dog mechanism, a hand-lever carried by the opposite end thereof, a lever-carrying said engaging the upper end of said lever to retain said pinion in mesh with its rack.

29. In a device of the class described, a vertically-movable frame, a carriage supported thereby, means for controlling the movement of said frame, a trip-lever for operatingsaid means, a pivotally-mounted stop upon the carriage to engage said lever, and a lug ada ted to be thrown into or out of operative re ation with the lower end of said stop.

30.. In a device of the class described, a

' vertically-movable frame, a carriage sup ported thereby, means for controlling the movement of said frame, a trip-lever for operating said means, a pivotally-mounted stop upon the-carriage to engage said lever, a lug adapted to be thrown into vor out of operative relation with the lower end of said stop, and apivoted arm mounted at one side of said lug and adapted to be interposed between the same and said stop to retain the latter in horizontal position out of the path of the triplever.

31. In a-devicTe of the class described, a carriage-frame, a vertically-disposed carriage traveling therein and provided with a pivot- 'ed removable book-holder, and supportingbrackets'for the book-holder pivots carried at the lower ortion of said carriage.

32. In a evice of the class described, a vertically-dis osed carriage, a book-holder frame pivota ly mounted at the lower edge thereof to lie in a horizontal plane when opened, and independent platens pivotally mounted in said frame at the pivoted edge thereof so as to swing into a vertical plane when the holder is open.

33. In a device of the class described, a carriage, a book-holder mounted therein, platens pivoted upon said book-holder, back oards mounted on said holder for movement in arallelism thereto, and spring-arms carrie by the holder and bearing against said boards.

pinion at its lower end, and a tension-spring 34. In a device of the class described, a I

carriage, a book-holder pivotally mounted center of the frame said platens tapering in ward in their cross-section, and a casing therein, a tension-arm pivoted below the i mounted upon the pivots of the platens bepivot of the carriage, a rod carried by said i yond said frame.

holder, a sleeve slidingly mounted on said 42. In a device of the class described, a

rod and pivotally connected to said arm, a book-holder comprisingaframe, back boards tensionspring disposed upon the rod to contact with said sleeve and means on said holder to engage said sleeve.

35. In a device of the class described, a carriage, a book-holder pivotally mounted therein, a tension-arm pivoted below the pivot of the carriage, a rod carried by said holder, a sleeve pivotally connected to said arm, a tension-spring disposed upon the rod to contact with said sleeve, a locking-latch pivoted upon the holder, a tooth upon said sleeve to engage the latch, and means for operating said latch.

36. In a device of the class described, a carriage, a book-holder pivotally. mounted therein, a tension-arm pivoted below the pivot of the carriage, a rod carried by said holder, a sleeve pivotally connected to said arm, a tension-spring disposed upon the rod to contact with said sleeve, a locking-latch pivoted upon the holder, a tooth upon said sleeve to engage the latch, a pivoted operat ing-handle at the free edge of said holder, and a rod from said handle to said latch.

37. In a device of the class described, a carriage, a book-holder pivotally mounted therein, a tension-arm pivoted. below the pivot of the carriage, a rod carried by said holder, a sleeve pivotally connected to said arm, a tension-springdisposed upon the rod to contact with said sleeve, and a stop-face carried by said tension-arm and adapted to engage a fixed member of the machine when the book-holder is in lowered position.

38. In a device of the class described, acarriage, a holder-frame pivotally mounted thereon, parallel platens pivotally mounted in said holder upon arod extended parallel to the pivots of the holder, and a casing pivoted upon the holder-frame to embrace the same.

39. In a device of the class described, a vertically-disposed carriage, a book holder frame pivotally mounted at the lower edge thereof t/O lfi in a horizontal plane when opened, a pivoting-rod carried by said frame at the pivoted edge thereof, and separated independent platens mounted upon said rod at opposite sides of the center ofthe frame.

40. In a device of the class described, acarriage, a frame pivotally mounted therein on a pivoting-rod at one side of said frame, and independent platens pivoted upon said frame at opposite sides of the center of said frame said platens tapering inwardin their cross-section.

41. In a device of the class, described, a carriage, a frame at one side thereo independent platens pive oted upon said frame at opposite sides of the pivotally mounted therein disposed within said holder, crossed levers pivotally connected to said boards and holder at opposite. ends thereof, means for permitting the travel of the pivot at one end of said levers, oppositely-disposed spring-actrated arms carried by the holder and adapted to engage said boards and means for adjusting the tension of said arms.

43. In a device of the class described, a book-holder comprising a frame, back boards disposed within said holder, an arm carried by the frame to engage said boards, a rod upon which said arm is pivoted, and a tension-spring surrounding said arm and engaging the frame and arm.

44. In a device of the class described, a vertically disposed carriage frame, a carriage mounted to travel horizontally therein, a book-holder pivoted within said carriage to swing into a horizontal plane at the rear thereof, and means to control the travel of said carriage.

45. In a device of the class described, a verticallydisposed carriage frame, a carriage mounted to travel horizontally therein, a book-holder pivoted to'swing in said carriage toward the rear thereof, brackets for the book-holder pivots having elongated open-ended slots therein, means for controlling the travel of said carriage horizontally, standards upon which said frame is adapted to travel vertically, and means for'controlling the downward travel of the frame upon said standards. i i

46. In a device of the class described, a verticallydisposed carriage frame, a carriage mounteck'to travel horizontally therein, a book-holder pivoted to swing in said carriage toward the rear thereof, means for con trolling the travel of said carriage horizontally, standards upon which said frame is adapted to travel vertically, means for feeding said frame downward upon the standards, and means disposed upon the carriage for engaging and automatically actuating said downward feed.

47. In a device of the class described, a vertically-disposed carriage, means for effecting a horizontal travel thereof, and a booksupporting device mounted upon said carriage comprising opposite boards having spring tension-arms normally bearing thereon to present the book in rinting position.

In testimony whereof fafiix my signature in presence of two witnesses.

ZARDIA GRAIN.

Witnesses:

WILLARD F. ELLIS, W. F. HUGHES.

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