US2273486A - Copyholder - Google Patents

Description

Feb. 17, 1942.

P. P. GLASSEY COPYHOLDER 3 Sheets-Sheet 1 Filed Au 14, 1940 it. In 444 k v /4 InvEnTuR PHILIP F BLASSEY ATTORNEY Feb. 17,1942. RGLASSEY -2,273,486

COPYHOLDER Filed Aug. 14, 1940 3 Sheets-Sheet 2 InvEm 11 PHILIP P BLASSEY ATTORNEY Feb. 1 1942. R'RGLASSEY -2,273,486

COPYHOLDER Filed Aug. 14, 1940 3 Sheets-Sheet 3 Inv EH T on PHILIP P Gumssr ATTORNEY Patented Feb. 17, 1942 {TED NT OFFICE 14 Claims. (c1. fee-a9 This invention is concerned with improvements in copy holding machines and specifically relates to certain improvements in copy holding machines similar to the machine described in my copending application for United States Letters Patent, Serial No. 270,894. r

One of the objects of my invention is to provide means for adjusting'the spacing of the mov able marker to coincide directly with the spacing of the copy mounted on the machine.

Another object of my invention is to provide means for locking the marker to the actuating mechanism while spacing adjustment is being made so as to facilitate the accurate adjustment of the marker spacingto coincide directly to the spacing of the copy and, further, to return the marker to its starting position after the adjustment has been made.

A further object of my invention is to provide a simple adjustment means for changing the marker spacing.

Another object of my invention is to provide a book support which is constructed and arranged to adjust itself to books of varying thicknesses and. to firmly clamp a book which is opened at such a point that one'portion of the opened book is thicker than the remaining per tion.

Still another object of my invention is to pro-. vide a booksupport that is likewise adapted to box with the front plate of the clutch box removed.

Figure 7 is a sectional view of the clutch box taken on the line 1-4 of Figure 6.

Figure 8 is an enlarged detail of the clutch box mechanism with the clutch levers in the locked position, the front plate of the clutch box being removed.

Figure 9 :is an enlarged side elevation of the clutch box with the mechanism being in a position similar to that shown in Figure 6;

Figure 10 is an enlarged side elevation of the clutch box with the mechanism being, in the position shown in Figure&

Figure 11 is an enlarged sectional View of the adjusting means for varying the marker spacing.

Figure 12 is an enlarged perspective view of the adjusting mechanism spring clamp.

Figure 13 is a view taken on the line l3l3 of Figure 2, parts being in section and parts broken away, showing details of the marker sup- 1 port.

retain the marker against outward displacement when ,the marker is at the lower extremity of its zone of travel.

Another object of my invention is to provide .a marker adjustable to various thicknesses of books or copy held on the machine. 7

Other objects and advantages will appear from the following specification and the accompanying'drawings, in which: v

Figure 1 is a perspective viewof the copyzholder of my invention.

Figure 2 is a side elevation of my copy holder in the operating position, parts being broken away.

,Figure 3 is a section through the easel taken onthe, line 3-3 of Figure 4, showing-details of the book supporting clamp.

Figure 4 is an elevation of the easel, parts being broken away, taken on the line :4-4 of Figure 2. j

Figure 5 is a .plan view, partly in section and Figure 14 is a detail taken on the line M-M of Figure 13.] v

. My improved copy holder, as illustrated in the attached drawings, comprises generally a base 20, an easel 2| pivotally mounted thereon and provided with suitable supports for notes, documents or books which are to be copied. A markeri 22 is provided for indicating the line of copy being transcribed. Actuating mechanism, generally indicated by the numeral 23, is provided for moving the marker in substantially equal steps longitudinally of the easel.

In the preferred form, the base 29 is an L- shaped vmember comprising two channel shaped sheetmetal stampings which are welded together.

a The rear arm :24 of the base is provided with apair .of easel supports 25--25 which, in this in- It is of course obvious that the base might be made of other material such as cast iron or might be .made as a single unitary stamping.

stance, are sheet metalstampings generally triangular in shape. The lower edge of each of the supports 25 is provided with aflange 26 which is spot welded to the-base 24.

parts being broken away, taken on thejline of Figure 2.

Figure 6 isan enlarged detailof the .clutch tially triangular flange 34. The bottom edge 35 of each of the flanges 34 acts as a limit stop to govern the backward movement of the easel when it is brought to the raised position. Lugs 35 are stamped out of the flanges 3d and bent forwardly of the legs 3!. The lugs 38 and the supports are provided with suitable apertures and pivotally joined together by means of the pins 3'|-31 and self-locking washers 3838. Each of the supports 25 is provided with an aperture 39 located toward the rear of the support and spaced upwardly from the base a suitable distance. The flanges 34 are each provided with an outwardly stamped substantially circular button 45 arranged to cooperate with the apertures 39 so that in the raised position of the easel, the buttons 45 enter the apertures 39 to yieldingly lock the easel in its raised or operating position. By pulling forward on the upper edge of the easel, the buttons 46 may be sprung out of the apertures 39 and the easel folded forward on the base 2!? so that the machine will occupy a minimum amount of space when not in use.

A clamp located adjacent the upper edge of the platen and more or less centrally thereof, is provided for holding flat sheets or documents which are tobe copied. In the preferred form, the clamp 55 is shaped substantially as shown in Figure 1 and is provided with two backwardly extending lugs 46 which are pierced to accommodate a pivot pin H. The platen 30 is provided with two outwardly extending lugs 48 which are likewise provided with apertures to support the pin 5?. A suitable coil spring (not shown) is provided to press the lower edge 58 of the clamp against the platen to frictionally engage a flat sheet or document. To release the clamp 65, it is only necessary to press on the upper portion when the lower edge 58 will swing outwardly about the pivot 47.

For supporting a stenographers notebook on the easel, a support 58 is provided which is .pivotally mounted at its left-hand end in the socket 5| which is suitably secured to the face of the platen 30. The support is loosely mounted in the socket 5! so that it may be removed, if desired, when copying work held in the clamp 45.

For the convenience of those who wish to copy from bound volumes, I have provided a novel book support 55 which, in the preferred form, is shaped from a piece of heavy steel spring wire substantially as shown in Figures 1, 2 and 3. The clamping portion 56 of the support 55which engages the pages of the book to be supported, is preferably curved outwardly in an arc, as clearly shown in Figure 3. At each end of the arc the support is bent downwardly a substantial distance, as illustrated in Figure 1 at 5']. The wire is then bent inwardly as at 58, Figure 3, and then backwardly as at 59 in Figure 2. The portions 58 and 59 form a support to prevent the book from sliding downwardly. At the rear ends of the portions 59, the wire is bent upwardly to form an are 60, as shown in Figure 2. The ends 5| of the wire are then bent so that they lie parallel to the back of the easel 2!. The ends 5| are secured in the sockets 52 which, in turn, are fastened to the back of the easel 2| by suitable means, such as spot welding. The bending and tensioning of the spring wire which forms the support 55 is such as normally to hold the support 55 in the position shown in the full lines in Figure 3. That is, the vertical portions 51 are spaced outwardly from the easel a substantial distance for a purpose presently to be described.

To support a book on the easel 2!, it is only necessary for the operator to grasp the portion 56 and pull it outwardly against the tension of the pring arcs 69. The book is then inserted behind the portions 56 and 57 so that the lower edge of the book rests on the portions 58 and 59. The operator then releases the portion 56 which springs back against the book to hold it firmly in place. If the book is opened at a point other than the center, it is obvious that one portion of the open book will be thicker than the other. For example, in copying from a law report which in many cases is two to three inches in thickness, it may be necessary to copy an excerpt from the latter part of the book. In that case, when the book is placed against the easel, it may well be that the portion to the left will be two inches thick while the portion to the right may be only one inch thick. In such case, my spring support 55 will adjust itself to the different thicknesses and the dashed lines in Figure 3 show the support with the left-hand side brought further away from the easel 2| than the right-hand side.

The mechanism for moving the marker 22 longitudinally of the easel 2| and the means for adjusting the amount of movement of the marker will now be described.

A pair of supporting brackets are afiixed to the face of the platen 35 adjacent the right-hand side thereof, one bracket being adjacent the top of the platen and the other adjacent the bottom of the platen. Each bracket 55 is provided with suitable apertures to support the fixed guide rod 65 and the movable actuator rod- 61 in spaced relation to the platen. The lower end of the movable actuator rod 61 is provided with an aperture 68 to pivotally receive the bent over end 69 of th connecting link 10. A self-locking spring washer II is provided to secure the portion 69 in the aperture 68. The opposite end of the connecting link 15 is likewise provided with a bent over portion which is pivotally secured to one end of the bell crank lever 12. The bell crank I2 is secured to the bracket I3 by means of a pivot Hi. The bracket 13 is suitably secured to the forwardly extending arm of the base member 28 adjacent the right-hand leg 31 of the easel 2|.

An operating key 15 which is roughly triangular in shape is pivotally mounted by means of the pin 16 to the bracket 11 which, in turn, is secured to the forwardly extending arm of the base 20 adjacent the forward end thereof. A portion of the key 15 extends to the rear of the pivot 16. This portion is provided with a substantially vertical arcuate slot 18. The radius of the are 18 is determined by the length of the connecting rod presently to be described. The portion 15' of the key below the slot 18 constitutes a stop in conjunction with the surface of the base 20 to limit the movement of the key about the pin 16 in a clockwise direction, as viewed in Figure 2.

The forwardly extending portion 79 of the key is provided with a finger piece 80 which is suitably secured thereto. A dependent portion 8| may be provided to act as a stop in conjunction with the base member 25 to limit the counterclockwise rotation of the key about the pin 16, as seen in Figure 2. The portions l5 and BI of the key 15 definitely limit the key motion to a constant movement. The spring 82 is provided to yieldingly urge the key 15 to its upward normal position.

Mounted in the slot 78 is an adjustable slide block 85 best seen in Figures 11 and 12. In the aeraese preferredrorm, this slide block assembly com-- prises aapivot member8fi which is .provided with an enlarged head B'I'Wa reduced collar portion-88, the diametero'f which islgreater than the width of the slot 1.8,.anda guide portion 89 which has a diameter substantially equal to the width-of the .slot'18 but is small enough to slide freely in bend-f the U, the width of the reduced portion 91 being, Slightly less than'thewidth of the slot I8. The reduced portion 9Iis joined to the end portions 96 by the square .shoulders 98. An aperture 9.9 is provided atthebottom of the U to accommodate the. portion 90 of the member 86-.

A connecting rod. I00. is provided for connecting the slide block 85 to the bell crank-I2. One end of the rod I90 is flattened and provided with an aperture to accommodate a pin IIJI to pivot ally join'the rear end of the rod I99 to the bell cranklever I2. Theforward end of the rod I09 is flattened and provided with an aperture I92 sufiiciently large to accommodate the collar portion 88 of the member 86.

In assembling, the locking member 95 is inserted in the slot 18 so that the reduced portions 91 of the piece 95 are free to slide in the slot'IS. The member 86 is inserted in the aperture I82 of the rod I00 so that the aperture I02 is seated on the collar portion 88. The conical collar 92 is then inserted in the bottom of the U-shaped piece 95 which projects from the left-hand side of the key I5. The member 86 is then inserted in'the slot '78 with the guide portion 89 extending through the slot and into the conical member 92, and with the portion 98 projecting through the aperture'99 .of the locking member 95. whole assembly may be secured by means of a self-locking spring washer I03 placed on the portion 99. The member 95 isbent and tensioned so that the shoulders 98 of the reduced portions '91 frictionally engage the sides of the key adjacent the slot I8, thus effectively looking the slide member 85 against displacement in the slot 'i8. The position of the member i85may be adjusted in the slot I8 by pressing the'portions 96 of the locking member 95 together. When the portions 96 are pressed together, the shoulders 98 will be disengaged from their contact with the side of the key I5 and thus permit The.

"traveler is. provided with a three-point supactuator clutch lever I29 and springIZI.

the free movement of the member 85 in the slot I8;

As has been noted above,the amplitude of motion of the key I5 is fixed by the stop portions I5 and 8|. The amount of motion transmitted by the connecting rod I00 to the actuator'rod B'I depends upon-the setting of the slide member 85 in the slot I8. When the member 85 is positioned adjacent the bottom of the slot I8, very little horizontal displacement of the'conne'oting rod I08 will take place when the key I5 is depressed. This is because the slot I8 is displaced to-one side of the pivot of the'key and themember85 moves on anarc of short'radius, with the greater component of motion being vertical. On the other hand, when the member 85 is moved to a position near the top of the slot I8, movement of the key I5 moves the member 85 on an arc v.of' comparatively great radius, and over a of motion is horizontal. It is thus seen that-any degree of motion between the maximum and minimum limits may :be transmitted to the .actuator rod 67. g. I

A traveler H0 is slidably mounted on, the rods 66 and 6 1. A traveler IIB oomprisesa substam tially U-shaped member having an upper flange III and a lower flange I*I2. The upper flange is provided with an aperture H3, to accommodate thefixedguiderod fifi and an aperture H4 to accommodate the actuator rod 61. The lower flange is provided with an aperture H5 to accommodatethe .fixed .guide rod 66 but is cut away adjacent the actuator rod 61. Thus, the

port. n

A marker supporting rod H6; is supported in suitable apertures provided in the upper and lowerfianges I I I -andI I2 and maybesecuredin place by means .of a self locking spring washer A pivot pin H8 is secured tothe traveler II-Il.

substantially centrally thereof and projects from the rear surface of the front plate. Mounted on the pivotpin H8 is a stop *clutch lever I:I9,.an The entire assembly may be held together'by means of a self-locking spring washer I122;

Referring to Figure 6, the stop clutchlever H9 is preferably formed having an elongated body member I23 which is provided with an elongated slot 124 for mounting-on the .pin H8. The left-hand end of the body portion I23 is provided with a flngernplate I25 which is bent at right angles to the body member I 23 and extends-outwardly beyond the side of the traveler H0. The finger :plate I25 is provided with an aperture I26 which is slightly larger than'the fixed rod 66 The opposite end of the lever H9 is provided with a locking finger I121. Theouter end of the locking finger I2]. is formed into a V-shape I-28best shown in Figure 9. :The right- I handsideof the traveler III] is provided with a back-turned flange I39. The rear surface I3I of this flange iscutat an angle to form a cam.

. A notch I32 is provided in this camsurface.

The actuator clutch lever I2!) is similar to the stop clutch lever H9 except that it hasno locking finger I21. It is provided with a body .portion I23 having an elongated slot I24 to accommodate the :pin H8 and afinger plate I25 having an aperture I26 to accommodate the actuator rod -61. The left-hand side of the traveler III! has a backwardly turned flange I33 terminating in a flat surface I34 which limits the upward movement of the finger piece I25 to a position Where the stop finger I 28 is "engaged in the notch I32. The lower end of the flange I99. is likewise provided with a flat surface I35 to limit the upward movement of the actuator clutch lever I20 to a position when such member is substantially horizontal. It is to be observed that when the clutch levers are raised, they do not swingon the pin H8 as a pivot, but slide on the rods 66 and 61 respectivel V cooked at an angle to the fixed guide rod 66 end portion of the are where the greater component the edges of the aperture I26 will thus grip the fixed guide rod and prevent the traveler from being moved upwardly. The actuator clutch lever I20 is likewise jammed on the actuator rod 61. However, if the actuator rod 61 is moved upwardly, the actuator clutch lever I20 will lift sufiiciently to free itself, permitting the actuator rod to slide through the aperture I26. If the actuator rod 61 is moved downwardly, the actuator clutch I20 will jam on the rod 61 and move the traveler downwardly with the actuator rod 61. In this case, the stop clutch lever will slide downwardly on the fixed guide rod 66.

The traveler may be moved to a desired position by inserting the fingers under the finger plates I25 and I25 and lifting upwardly. This releases the clutch levers from their engagement with the respective rods 66 and 61 so that the traveler may be slipped freely up or down. The lever I25 may be lifted upwardly until the end I28 catches in the notch I32 of the cam surface I3I. This is the position shown in Figure 8. In this position, the stop clutch lever is at right angles to the guide rod 66 and the aperture I26 will no longer grip the guide rod. At the same time, the locking finger I21 is sprung backwardly as it travels up the cam surface I3I and will jam the actuator clutch lever I20 backwards against the actuator rod 61, as shown in Figure 10. In this position of the stop clutch lever, it is thus seen that the traveler is free to slide either upward or downward on the guide rod 66, while it is firmly locked to the actuator rod 61.

The marker supporting rod H6 is somewhat the shape of an inverted J having a vertical portion I40 which is mounted in the traveler H0, as described above. A horizontal portion I4I slightly greater than the width of the traveler IIII terminates in a downwardly extending portion I42. A pivot member I43 is pivotally mounted on the portion I42 and may be secured in place by means of a self-locking spring washer. Extending outwardly in a horizontal direction from the pivot member I43 is a marker extension rod I44. Rotatably and slidably mounted on the marker extension rod I44 is the marker 22. It is thus seen that the marker 22 may lie substantially flat against the platen 30 or be swung outward about the portion I40 of the support as a pivot.

Since the support is also pivoted at I42, the portion I4I may be swung outward, as shown by the dotted lines in Figure 13, about its pivot I 40 while the marker extension rod and pivot block I43 permit swinging the marker 22 parallel to the face of the platen. Thus the double joint permits work of various thickness to' be supported on the platen while also permitting the marker to lie flat against the work. If work wider than the normal capacity of the machine is supported on the platen, the marker 22 may be slid outwardly on the rod I 44 as also illustrated by the dotted lines in Figure 13.

In the machine of my invention, the movement of the marker may be adjusted for any desired spacing between the maximum and minimum limits of movement. Further, the spacing of the marker may be adjusted directly to the line spacing of the copy supported on the machine. In order to do this, the work to be copied is first mounted on the platen. A flat sheet may be clamped by the clamp 45. A notebook may be suspended from the rod 50, or a bound book may the finger plates I25 and I25 and the traveler then may be moved at will so as to bring the marker 22 under a line of the copy. The stop clutch lever is then moved upwardly so that the finger end I28 engages in the notch I32. This locks the stop clutch lever H9 in the released position with reference to the guide rod 66 and locks the actuator clutch lever I20 to the actuator rod 61. The operating key I5 is depressed until the stop BI makes contact with the base 20 of the machine. Portions 66-96 of the member 95 are then pressed together permitting the adjustment of the slide member 85 in the slot I8. The slide member 85 is moved either upwardly or downwardly in the slot I8 to bring the marker 22 under the next line of copy on the work. After adjusting the marker to the desired spacing, the portions 96 of the locking member 05 are released, thus locking the slide member 85 in the adjusted position in the slot I8 of the key 75. Upon releasing the key I5, the spring 82 returns the key to its normal upward position which moves the actuator rod back to its initial position, returning the marker to its original position under the first line of copy. The stop clutch lever is then unlocked by pressing downwardly on the finger plate I25 to bring the end I28 of the finger I21 out of engagement with the notch I32.

For any and all adjustments of the slide member 85, the length of stroke of the key I5 remains constant while the amount of motion transmitted to the actuator rod 6'! depends on the setting of the slide member 85 in the key slot I8.

After the machine is adjusted to the spacing of the work to be copied, the marker may be progressed downwardly of the work in substantially equal steps by successive depressions of the key I5. When the key l5is depressed, connecting rod I00 is drawn forward rocking the bell crank lever I2 so as to draw the connecting link 10 downwardly and move with it the actuator rod 61. On the downward motion of the actuator rod 61 the clutch I20 grips the rod and moves the traveler with it. The clutch H9 releases its grip on the rod 66 during the downward movement of the traveler. When the key 75 is released, it moves upwardly rotating the bell crank lever I2 in the opposite direction, thus lifting the connecting link I0 and the actuator rod 61. As the actuator rod 61 starts to move upwardly, the clutch I20 moves about the pivot II 8, thus releasing its grip on the actuator rod permitting the actuator rod to slide freely upwards through the traveler. If there is any tendency of the traveler to move upwardly with the actuator rod, the stop clutch lever H9 will grip the guide rod 66 and prevent any such movement.

In order to prevent undue strain on the operating mechanism, I have provided an actuator clutch release cam I 45 which is located in the path of movement of the actuator clutch finger plate I25 adjacent the bottom limit of movement be supported by the book clamp 55. The clutches of the traveler H0. By continued manipulation of the key I5 the traveler may be brought to a point adjacent the bottom angle 65. The release cam I45 interposed in the path of movement of the actuator clutch I20 disengages it from the actuator rod so that continued manipulations of the key cannot damage th mechanism. At this bottom position of the traveler, the marker 22 will be carried down below the level of the bar 56 of the book rack 65, and will be behind the vertical portion 57 of the book rack. Thus, when the easel is folded downwardly on the base, the

rack 55 will prevent the marker from swinging outward away from the platen.

Although I have shown and described a'specific embodiment of my'invention, itis obvious that various changes can be made in the form and arrangement of the parts thereof without departing from the spirit of the invention. I, therefore, Wish to be limited only by the scope of the appended claims.

I claim:

1. In a copy holding machine having; an easel for supporting the copy and a, marker, wherein said easel and said marker are relatively movable for indicating lines, in combination, actuating means for producing said relative motion in sub stantially equal steps in one direction, adjustable means for obtaining infinite variation. of the amplitude of said steps between maximum and minimum'limits, and means connected with said actuating means for changing said relativ motion from a step by step motion in one direction to a back and forth movement Without substantial progress in either direction.

2. In a copy holding machine having aneasel forsupporting the copy and a movable marker, in combination, actuating means for moving said marker in substantially equal steps in one direction, adjustable means for obtaining infinite variation of the amplitude of said steps between maximum and minimum limits, and means connected with said actuating means for changing said relative motion from a step by step motion in one direction to a back and forth movement without substantial progress in either direction.

3. In a copy holding machine having an easel for supporting the copy and a marker, wherein said easel and said marker are relatively movable for indicating lines, in combination, means including a reciprocating actuator rod adapted normally for producing said relative motion step by step in one direction, means for reciprocating said rod, means for varying the length of stroke of said rod in any desired increment between maximum and minimum limits, means including a one-way clutch for utilizing the movement of said actuator rod to obtain relative motion between said easel and said marker, and means for locking said clutch to obtain relative movement in both forwardand reverse directions.

4. In a copy holding machine having an easel for supporting the copy and a movable marker for indicating lines, in combination, means including a reciprocating actuator rod adapted normally to move said marker step by step in one direction, means for reciprocating said rod, adjustable means for varying the length of stroke members for moving the marker in both directions with the rod.

6. In a copy holding machine having an easel for supporting the copy and a movable marker for indicating lines, in combination, afixed guide rod, a reciprocatable actuator rod positioned parallelto said guiderod, means for supporting said rods on said easel, means for reciprocating said actuator rod, a traveler mounted on said rods for supporting said-marker, a one-way clutch carried by said traveler and arranged to grip said actuator rod as it is moved in one direction, a second oneway clutch carried by said traveler and adapted to grip said guide rod to limit said traveler to movement in one direction, locking means associated with said clutches adapted to lock said first clutch to said actuator rod and to lock saidsecond clutch in an inoperative position soas to allow the traveler to move in either direction as said actuator rod is reciprocated, and means foradjusting the length of stroke of said actuator rod.

'7. In a copy holding machine having an easel for-supportingthe copy and a movable marker for'indicating lines, in combination, a fixed guide rod, areciprooatable actuator rod positioned parallel to said guide rod, means for supporting said rods on said easel, means for reciprocating said actuator rod, means for adjusting the length of stroke of said actuator rod, a traveler mounted on said rods, a central bearing pin extending rearwardly of said traveler, a one-way actuator clutch comprising a lever pivotally mounted on said pin, a transverse aperture in said level located; and proportioned to'loosely receive said actuator rod, said lever normally being cocked at an angle to said actuator rod, a one-Way stop clutch comprising a lever pivotally mounted on said pin adjacent said actuator clutch lever and having an aperture located and proportioned to loosely receive said guide rod, said lever being normally cocked at an angle to said guide rod, clutch locking means comprising a lock finger formed integrally with said stop clutch lever and extending adjacent said actuator clutch lever, a

cam afiixed to'said traveler and arranged in the of said actuator rod, and means for locking said marker to said actuator rod whereby said actuator rod causes said marker to move in both forward and reverse directions.

5. In a copy holding machine having an easel for supporting the copy and a marker movable with respect thereto for indicating lines, in combination, a reciprocating actuator rod, an actuating element, means operatively connecting the actuator rod to the actuating element for reciprocating said rod, said connecting means including members relatively adjustable for varying the length of stroke of said rod, means including a clutch operatively connecting the marker to said actuator rod for moving the marker step by step in one direction, and means for locking said clutch to the actuator rod during the adjustment of said adjustable connecting path of movement of said lock finger, said cam surface being provided with a notch for receiving the lock finger at a predetermined point of said finger travel to yieldingly maintain said finger in the locked position whereby a predetermined displacement of said stop clutch lever from its normal angular position causes said lock finger to travel over said cam surface and jam against said actuator clutch lever, thus locking said actuator clutch lever to said actuator rod.

8. In a copy holding machine having an easel for supporting the copy and a movable marker, in combination, means for progressing said marker in substantially equal steps including a clutch, and means for disconnecting said clutch when said marker has reached a predetermined limit of travel.

9. In a copy holding machine having an easel for supporting the copy and a movable marker, in combination, actuating means for progressing said marker in substantially equal steps, a clutch interposed between said actuating means and said marker, said clutch being movable with said marker and having a manually operable control member, and means carried by said easel located in the path of movement of said control member for automatically disconnecting said clutch when said marker has reached a predetermined limit of travel.

10. In a copy holding machine having an easel, in combination, a book support comprising a horizontal member extending substantially parallel to said easel, downwardly and rearwardly extending supporting members joined to each end of said horizontal member, and means attached to each of said supporting members for yieldingly urging said supporting member toward said easel.

11. In a copy holding machine having an easel and a marker movable with respect thereto through a predetermined zone for indicating lines and wherein said marker is pivoted to enable it to swing outward from said easel, in combination, a book support and a marker retaining means comprising a horizontal clamping member extending substantially parallel to said easel adjacent the lower end of said zone, said clamping member being normally maintained in spaced relation to said easel, supporting members connected to said clamping member disposed below said zone and extending behind said easel, and resilient means connected with said supporting members and said easel for yieldingly urging said clamping member toward said easel, whereby said book support is adapted to retain said marker adjacent said easel when said marker is at the lower limit of said zone.

12.- In a copy holding machine having an easel,

in combination, supporting means for holding on said easel a book to be copied, said supporting means comprising a horizontally extending clamping portion, supporting members attached to said clamping member adjacent either end thereof and extending rearwardly therefrom a substantial distance and projecting behind said easel, a spring member attached to each of said supporting members for yieldingly urging said clamping member toward said easel, said spring members being independent of each other so that said clamping member may conform itself to uneven thickness of copy being held.

13. Adjustable means for changing the spacing of a line indicator comprising, in combination, a lever having a constant amplitude of motion, a slot in said lever extending longitudinally thereof, a slide block movably mounted in said lever, linkage connecting said slide block to said line indicator, a U shaped spring member mounted in said slide block with the free ends of said U projecting through said slot, and a plurality of projections on said spring member, said projections normally being frictionally engaged with the face of said lever for restraining said block against displacement in said slot.

14. Adjustable means for changing the spacing ing of a line indicator comprising, in combination, a lever having a constant amplitude of motion, aslot in said lever extending longitudinally thereof, a slide block movably mounted in said lever, linkage connecting said slide block to said line indicator, a U shaped spring member mounted in said slide block with the free ends of said U projecting through said slot, and a pair of shoulders on each of said free ends of said U, said shoulders normally engaging the face of said lever for locking said slide block in a selected position in said slot and being disengageable therefrom for moving said slide block to any other selected position,

PHILIP P. GLASSEY.

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