US1714589A - Step and repeat machine - Google Patents

Description

y 2 o. CHOUINARD 1,714,589

' STEP AND REPEAT MACHINE Filed Oct. 15, 1926 4 Sheets-Sheet l May 28, 1929. o. CHOUINARD STEP AND REPEAT MACHINE Filed Oct. 15, 1926 4 Sheets-Sheet 2 awueuto'c y 1929. o. CHOUINARD ,589

STEP AND REPEAT MACHINE I Filed Oct. 15, 1926 4 SheetsSheet 3 v L l v -w May 28, 1929.. CHOUINARD 1,714,589

STEP AND REPEAT MACHINE File'd Oct. 15, 1926 4 Sheets-Sheet 4 Patented May 28, 1929.

UNITED STATES PATENT OFFICE.

osoan CHOUINABD, or new YORK, N. Y., ASSIGNOR T0 HUNTER WYKES, or NEW Yemen. 3.

. STEP AND REPEAT MACHINE.

Application filed October 15, 1926. Serial No. 141,890.

This invention relates to step and repeat machines, i. e. machines adapted to photograph an object on a photographically sensitized plate a plurality of times in proper registration position. In such machines a unit design is reproduced a plural ty of times upon a photographically sensitized member by successively projecting, by means of a lens, images of the design upon successive portions of the sensitized plate so as to produce a plate containing a plurality of reproductions of such design of a predetermined size and arranged in predetermined relative position. I

This invention is, in general, similar to the invention forming the subject matter of my Patent No. 1,688,786, dated October 23,

1928, and is, as to certain particulars, an improvement over my said prior invention.

An object of this invention is to prov de a machine in which the registration lock1 ng mechanism is adapted for use over a wide range of settings, and, although simple in construction and operation, is adapted for variable fine adjustments such for example as micrometer adjustments.

Further objects of the invention will more fully appear from the following descript on, taken in connection with the accompanying drawings, illustrating by way of example the preferred embodiment of the invention.

Referring to the drawings: Fig. 1 shows the apparatus in side elevation,

tion with certain parts broken away to more clearly show the mechanism to the rear,

Fig. 3 is an enlarged View showing the registration mechanism in elevation,

Fig. 4 is a View similar to Fig. 3, with parts broken away, Fig. 5 shows the micrometer means in per spective, I Fig. 6 is a section taken at 6-6 of F g. 3, Fig. 7 is a section taken at 7-7 of Fig. 3, Fig. 8 is a section taken at 8-8 of Fig 3, Fig. 9 is a section taken at 99 of Fig. 3, and j Fig. 10 is a section taken at 10-10 of Fig. 3.

In Figs. 1 and 2 a machine is shown which Fig. 2 shows the apparatus in front eleva-' ber, such parts will be designated is similar in general construction and operation to the machine fully described in the specification of my application above referred to. Therefore in the present application a detailed description will not be given of certain parts fully described in said prior specification; reference bein herein made to said specification for such details as are not more fully and specifically described herein.

A frame support 1 is provided with a fixed horizontal bed 2, and a vertically adjustable bed 3 provided with means 4 for effecting such adjustment. The bed 2 carries a focusing projecting camera designated in general as 5 mounted on the frame 6, which is adapted to be moved along the bed 2 by any suitable means such as a pinion gear and rack mechanism designated as 7.- A table 8 is slidably mounted on the bed 3 and is adapted to be moved in a direction transverse to the movement of the camera 5 by any suitable means, such for example as by pinion gear and rack mechanism designated as 9 (Fig. 2). The camera is adapted to carry a transparent design plate bearing an image to be projected onto a sensitized surface carried on the table 8. And the relative transverse movement of said camera and table will therefore move said projected image over said sensitized surface longitudinally and transversely thereof as is well understood by those skilled in the art.

In order that the relative transverse movements of said camera and table may be controlled to predetermined steps of successive movement, to thereby provide the accuracy required for registration in such work, I provide two registration locking mechanisms, referred to in general as A and B,

.- cooperatively associated respectively with the camera 5 and the table 8; and which will now be described in detail. Since the said mechanisms A and B- are identical, it is only necessary, for the complete understanding of the construction and operation thereof, that one of the same be described; and therefore the mechanism -A will be described fully. Where it is necessary to refer to parts of the mechanism -B by numby numerals corresponding to the parts of A-, but having the sufiix prime attached.

Referring to Figs. 1, 2 and 3: a longitudinal rod is rigidly attached to the relatively stationary bed 3 by suitable means such as the brackets 11 and 12. The rod 10 extends parallel to the direction of relative movement of the table 8 and bed 3, and in the present embodiment the rod 10 is cylindrical. A sleeve 13 slidably engages the rod 10 and is rigidly attached to the table 8 by suitable means, such for example as the brackets 14 and 15. Suitable clamping means designated as 16 see also Fig. 9) is provided for rigidly clamping the members 10 and 13 in fixed position; the locking means in the resent embodiment being carried by the racket 15. A registration lock, designated in general as 17, is slidably mounted on the sleeve 13 and is rovided with suitable clamping means designated as 18 adapted to clamp the lock' 17 to the sleeve 13. The lock 17 is preferably restricted against rotary movement about the sleeve 13. Theregistration lock 17 is provided at its lower portion with a stop pin 19 1 (see also Fig. 7) slidably mounted therein,

and adapted to move transversely to the rod 10. The pin 19 is provided with means for limiting its outward movement, such for example as the pin 20 extending through the body of the lock 17 and adapted to engage a shoulder on the pin 19 formed by means of a reduced neck. The pin 19 is also provided with a knurled head 21 which furnishes means for moving the pin inwardly and outwardly.

A measuring scale 22 is rigidly attached to the bed 3, and is provided with a plurality of holes 23 spaced at given intervals along said scale in a direction substantially parallel to the rod 10. In the present embodiment there are six of theseholes spaced at intervalsof 1; but it is to be understood that the number of holes and spacing may be varied. For this reason the scale 22 is made detachable. These holes 23 are preferably rounded at their outer faces such as at 24 and are slightly tapered inwardly, terminating in an inwardly extending threaded portion 25. A stop block 26 is rigidly attached to the scale 22 by means such as machine screws 27, which provide means for replacing this block when desired. The block 26 is provided with a hole 28 of a size suitable to snugly seat the end of the engaging pin 19. A channel piece 29 (Fig. 7) is securely attached to the scale 22 forming therewith a fixed upper groove; and a beveled slide strip 30 is adjustably attached to the scale 22 by means of knurled headed machine screws 31. Helical compression springs 32 are seated in cooperating bores provided in the members 22 and 30 and pins 33 are secured to the member 22 and slidably engage the strip 30. It will therefore be seen" that, by releasing the screws 31, the compression springs 32 are released,

thereby moving the strip 30 outwardly from 22; the parts being held in alignment by means of the pins 33. A block 34 (see also Fig. 5) is provided with an upper tongue 35 adapted to slidingly engage the groove formed between the members 29 and 22 and a lower beveled face 36 adapted for zooperative engagement with the beveled s rip 30. The block 34 is also provided with a, hole 37 in cooperative alignment with the holes 23 forming the measuring scale 22. A knurled headed pin 38. having an accurately machined shank 39 and; a threaded end 4O,v

adapted for cooperative'engagement with the threaded portion 25 of the holes 23, is provided for accurately and positively securing the block 34 in the desired position on the scale 22 (Fig. 9). A stop block 41 is provided with an upper tongue 42 similar to the tongue 35 (Fig. 5) and with a lower beveled face 43 similar to the face 36, and is adapted to engage the slidesformed in conjunction with the scale 22. The block 41 is also provided with a hole 44 of a size similar to hole 28 in block 26, and so positioned that when the block 41 is seated in its slides on the scale 22 the hole 44' will be in horizontal alignment with the hole 28, and likewise adapted to snugly seat the pin 19. The blocks 34 and 41 are adjustably attached together by suitable fine adjustment means, such as the micrometer adjustment means designated as 45. It will therefore be seen that blocks 34 and 41 may be accurately adjusted one with respect to the other; the present embodiment providing an adjustment limited to 1" by 1/1000". The tongues 35 and 42, and the faces 36 and 43 are formed and positioned in projected alignment, thereby adapting the assembled blocks to be positioned on the scale 22 in sliding engagement with the cooperating slides formed by the members 29, 30 and the scale 22.

In the present embodiment the distance between the hole 28 and the hole 44, when the block 34 is registered with the'extreme left hand hole 23 (Fig. 3) and the blocks 34 and 41 one half separated, is from center to center. So that in the present embodiment the smallest step movement which can be effected is 1 as will be more fully understood following.

The setting provided for the block 34 with respect to the scale 22 provides a coarse adjustment permitting in the present embodiment adjustments of 1" to 6"; and the micrometer adjustment 45, associated with the blocks 34 and 41, provides a fine adjustment, permitting in the present embodiment adjustments of 1/1000 to 1", and adapted in conjunction with the coarse adjustment to furnish the desired setting for the Stop block 41. The blocks 34 and 41 may be adjusted as a unit while entirely removed from the apparatus, and after such adjustment the assembled unit may be inserted on the scale; after which theblock 34 is fixed to the scale 22 in its desired setting by means of the pm 38. After this has been done, the screws 31 are turned inwardly to securel lock the block 41 against the scale 22, to t ereby prevent any strain from being imposed on the micrometer adjustment 45. .With the stop block 41 so positioned a predetermined setting has been made between the fixed stop block 26 and the stop block 41; all of which will be more fully understood from the following description of the operation.

Operation.

The plate bearing the desired image having been placed in the camera 5, and a ground glass plate having been placed on the table 8, the camera is focused in the usual manner, all of which is well understood by those skilled in the art. The camera 5 and the table 8 are now moved by means of the mechanisms 7 and 9 until the projected image falls on the extreme right hand rear corner (as viewed in Fig. 2) of the sensitized surface. We will assume that the image is to be projected successively along the sensitize-d surface in a direction extending to the left, to thereby form a rear row comprisin a series of images in accurately spaced position one with respect to the other. The camera 5 and table 8 are now ri idly clamped in their respective positions y means of the clamps 16 and 16. The ground glass plate is now removed and the sensitized surface, on which it is desired to project images from the plate carried in the camera 5, 1s placed on the table 8 and suitably clamped thereon.

We will assume that the center to center distance desired between the unitary designs on the sensitized surface is 1.785" in the rows extending in direction left and right as viewed in Fig. 2. Screws 31 are adjusted to release the strip 30, (Fig. 3) the pin 38 is removed and the assembled blocks 34 and 41 together with the attached adjustment 45 are removed from the scale 22 by sliding the assembled unit out toward the right. The micrometer adjustment 45 is then adjusted to read .785. The assembled unit is then replaced on the scale 22, by sliding the same therealong in the grooves provided, and the block 34 is so positioned that the hole 37 comes in register with the second hole 23 counting from the left. The pin 38 is then inserted through the hole 37 and into the hole 23, and is screwed into position, thereby firmly aflixing the block 34 to the scale 22. The screws 31 are then adjusted to clampthe bevel faced strip 30 firmly against the face 43 of the stop block 41, to thereby rigidly secure the same to the scale 22 in its adjusted position. In this position the center to center distance between the holes 28 and 44 will be 1.7 85"; this being the distance desired for successive steps of movement in re istering images on the sensitized late in t e series running right and left as a ove set forth.

he clam in means 18 is set in its released position an with the lock pin 19 withdrawn the registration lock 17 is moved along the sleeve 13 until the pin 19 is in registering position with the cooperating hole 44 in the stop block 41; and the pin 19 is then inserted in the hole 44 bringing the registration lock 17 into accurate regisration with the stop block 41 (Fig. 3). Clamp 18 is now tightened to rigidly clamp the registration lock 17 to the sleeve 13, which rigidly locks the registration lock together with its stop pin to the table 8. Clamp 16 is now released and the pin 19 is withdrawn from the hole 44, thereby permitting freedom of movement of the now rigidly attached parts comprising the registration lock, the sleeve 13 and table 8 bearing the sensitized surface. The table 8, together with the sensitized surface carried thereon, is now moved to the left, by means of the mechanism 9, until pin 19 is in registering position with the hole 28; at which time the pin 19 is inserted in the hole 28, thus bringing the registration lock 17 into accurate and positive registration with the rigid stop 26. The clamp 16 is now tightened, thereby securing the table 8, togetherwith the sensitized surface carried thereon, in accurate and positive registration position for the second exposure of the image on the sensitized surface. After this exposure has been made, released, the pin 19 withdrawn from the hole 28 and the registration lock 17 is moved to the right until the pin 19 falls in registering position with the hole 44 in the stop 41, where the pin is again pushed in, thereby locking the registration lock 17 accurately and positively for registration with the stop 41. The clamp 18 is again adjusted to lock the registration lock 17 to the sleeve 13, clamp 16 is released, the pin 19 withdrawn and the table is moved another step into its third position in a manner similar to that above described. Succesthe clamp 18 is sive steps and registrations are effected similar to the manner above described until the first row of images has been printed upon the sensitized surface.

When the last image at the left hand end of the rear row of images has been printed, the table is left in its locked position, and the camera 5 is moved forward one step by means of the registration locking means B, which is operated in a manner similar to that above described in tration locking mechanism A-. The second row of exposures is made, successively stepping the table 8 from left to right in a manner similar to that described above; but with the steps carried out in the reverse order. This procedure is continued until the desired number of exposures has been made. It will therefore be seen that a complete series of exconnection with the regis-' posures of the image, accurately positioned,

' the strips 46, are attached to the respective sides of the registration lock 17 and are adapted for abutting engagement with the respective blocks 41 and 26 at a time when reg stration lock 17 is just approach ng 1ts reglstration position with respect to the respective blocks 41 and 26. That is, just before the pin 19 is in registering position with the respective holes 44 and 28 one of the spring fingers 46 at one side of the lock 17 comes into contact with one of the stops and the operator, feeling the slight check to the movement of the table, thereby ascertains that the registration position has been almost reached; whereupon the movement of the table 8 or of the camera 5, as the case might be) 1s diminished and the pin 19 is pushed inwardly until it falls into its cooperating hole.

It is to be understood, with reference to the operation above described, that this is the usual mode of operation of the embodiment shown herein; but, after the invention is fully understood by those skilled in the art, it will be obvious that the invention is adapted to operations varying from that described.

For example, in reproducing images on a sensitized surface, where the design thereon formed is to be finally printed on paper or other yielding material, it has been found that the yieldable material is subject to variations, such as by stretching or shrinking, in width from one point in its longitudinal travel to another; or that for similar or other reasons it is desirable to vary the spacing of the images in the rows, or relative position of the images on the sensitized surface, by a predetermined slight variation. That is, it may be found desirable to have the spacing of the individual images of a series in a succeeding row vary, say a few thousandths, from the spacing of the images of a series in a preceding row. Or for other purposes it may be found desirable to slightly vary the fixed steps or registration settings of the registration means.

The present invention rovides for this in the following manner. or illustration We will assume the same spacing of 1.785 in the first row; and we will assume that the spacing in each successive row is to be made 1/1000 more. We Will assume that there are to be five unitary images in each series extending left and right. The center image of each series will fall on a median line and, considering any two series, the images on each side adja cent the median line will be 1/1000 further out in the succeeding series; while the images on the extreme ends of the succeeding series will fall 2/1000" be 0nd the corresponding images of the prece ing series. Then after the first series has been exposed, and the camera moved to bring the image in the line of the succeeding series and there clamped by means of clamp 16; the first step is made to the right in the usual manner, but no exposure is made. The clamp 18 is then loosened, the screws 31 loosened and the micrometer 45 set to .787 to thereby move stop 34 2/1000" to the right and the screws 31 tightened; the lock 17 is now moved into positive engagement with the block 41, the clamp 18 tightened, the clamp 16 loosened, and the table 8 moved to the left until the lock17 positively engages the stop 26, or 1.7 87 which moves the sensitized surface to a position where the image falls 2/1000 beyond the corresponding image of the series preceding. Before the next step is made the micrometer is adjustedstill while in the machine or removed if desiredto read .786 and the next steps made in the usual manner, thereby spacing the exposed images 1/1000 further apart than in the preceding series.

This variation of operating the apparatus isionly one of many which will occur to those skilled in the art. Likewise it is to be understood that the apparatus may be used for other purposes and in other ways than heretofore described, as will be clearly understood by those skilled in the art. For instance, it may be used for superposing one print on another, from the same or different negatives, such as in color work or composite work of any na ture. This work merely requires a device which is capable of projecting or printing the same or component images in the same relative position successively.

Having thus described my invention particularly with reference to its preferred form, it will be obvious to those skilled in the art, after understanding my invention, that various changes and modifications may be made therein without departing from the spirit and scope of my invention and I aim in the appended claims to cover such changes and modifications as are within the scope of the invention;

What I claim is: Y

1. In photographic apparatus of the character described, the combination of a relatlvely stationary part and a relatively movable part, means for effecting relative movement between said parts, positive registrat1on locking means for measuring successive predetermined steps of relative movements of said parts and for selectively positively locking said parts together at predetermined positions and comprising measuring means rigidly attached to one of said parts, a stop attached to said measuring means and ad justable thereon in a direction parallel to the relative movement of said parts, and a cooperating lock stop adjustably attached to the other of said parts and movable with res ect thereto, one of said stops being also mova le with said movable part. 7

2. In photographic apparatus of the character described, the combination of a relatively stationary part and a relatively movable part, and means comprisin measuring means rigidly attached to one 0 said parts, a stop attached to said measuring means and adjustable thereon in a direction parallel to the relative f movement of said parts, said stop being provided with secondary adjustable means operable in a direction parallel to said first adjustment and in addition thereto, and a cooperating stop adj ustably attached to the other of said parts and movable with respect thereto, one of said stops being also movable with said movable part and said stops being respectively formed for interfitting coopera-' tion to thereby efi'ect locking of said parts against relative movement in two directions.

3. In photographic apparatus of the character described, the combination of a relatively stationary part and a relatively movable part, and positive registration locking means comprising measuring means rigidly attached to one of said parts, a stop removably attached to said measuring means andadjustable thereon in a direction parallel to the relative movement of said parts, said stop being provided with micrometer adjustment means in addition to said adjustment on said measuring means, means for positively rigidly clamping said stop and micrometer means to said measuring means in locked adjustment, and a cooperating stop adjustably attached to the other of said parts and movable with respect thereto, one of said stops being also movable with said movable part.

4. In photographic apparatus of the character described, the combination of a relatively stationary part and a relatively movable part, a longitudinal bar. rigidly secured to one of said parts, a slidable member rigidly secured to the other of said parts adapted for sliding engagement with respect to said bar, means for locking said bar and slidable member together, a registration lock stop adapted selectively to be moved with respect to said slidable member and 'to be locked thereto and moved therewith, first cooperating lock stop means fixed with respect to said 5. In photographic apparatus of the char-- acter described, the combination of a relatively stationary part and a relatively movable part, a longitudinal bar rigidl secured to one of said parts, a slidable mem er rigidpositive registration locking th iy secured to the other of said parts adapted or Shdlllg engagement with respect to said bar, means for locking said bar and slidable member together, a registration lock stop adapted selectively to be'moved with res ect to said slidable member and to be lodlred ereto and moved therewith and provided with an engaging portion, first lock stop means fixed with respect to said bar and pro- V1d1l1g a first cooperatin engaging portion or sald registration loc stop, and second lock stop means providing a second cooperatmg engagmg portion for said registration lock stop ad ustably mounted with respect to said bar and mova le in a direction parallel to the relative movement of said parts and adapted to be selectively rigidly fixed a predetermined distance from said first lock stop means, whereby said predetermined setting of said lock stop means will provide a fixed distance of unita movement to be effected between said relatively movable parts.

6. In photographic apparatus of the character described, the combination of'a relatively stationary part and a relatively movable part, a guide bar rigidly secured to one of said parts, a slide member rigidly secured to the other of said parts, and in intimate sliding engagement with said bar, means for locking engagement between said bar and slide member at selective adjustments, a registration lock slidably engaging said slide member and provided with a stop engaging portion, means for locking engagement between said registration lock and said slide member at selective adjustments, a fixed stop and an adjustable stop carried by the sai part to which said bar is attached and each adapted for positive locking engagement with said registration lock, said fixed stop being rigidly attached, and said adjustable stop being selectively movable in a direction parallel to the relative movement of said parts, permitting thereby a predetermined setting of the distance between said stops.

7. In a photographic machine of the character described, the combination of a relatively stationary part and a relatively movable part, a guide bar. rigidly secured to one of said parts, a slide member rigidly secured to the other of said parts and in intimate sliding engagement with said bar, means for locking engagement between said bar and slide member at selective adjustments, a registration lock slidably engaging said slide member and provided with a stop engaging portion, means for locking engagement between said registration lock and said slide member at selective adjustments, two stops carried b the said part to which said bar is attache and each adapted for ing engagement with said registration lock, the distance between said stops being selectively variable in a direction parallel to the positive lock- 1 adapted to be ri relative movement of said parts, permitting thereby apredetermined setting of the distance between said stops.

8. In photographic apparatus of the character described, the combination of a relatively stationar part and a relatively movable part, a gui e bar rigidly attached to one of said parts parallel to the direction of relative movement of means rigidly secured to the said part to which said bar is attached, a measuring stop idly attached to said measuring means se ectively at a plurality of positions and providing a coarse ad ustment for registering said parts, a movable lock stop cooperatively associated with said measuring stop movable with respect theretoand connected therewith by micrometer ad ustment means providing a fine adjustment for registering said parts, said measuring stop lock and micrometer adjustment belng removable from said measuring means as an assembled unit, a fixed lock stop rigidly connected to said measuring means, a sleeve surroundin said guide bar slidable therealong and rigidly attached to said other art, means for locking said sleeve to said ar, and a registration lock in sliding engagement wlth said sleeve adapted to be moved longitudinally with respect thereto and also adapted to be attached thereto for movement therewith, said registration lock being adapted for positive alternative engagement with said fixed and said movable stops.

9. In photographic apparatus of the character described, the combination of a relatively stationary part and a relatively movable part, means for positively registering said parts at a plurality of predetermined positions comprising a fixed stop attached to one of said parts, a movable stop attached to the same said part, means for positively selectively setting said movable stop at a measured predetermined linear distance from said fixed stop, said positive setting means comprising a member having a plurality of holes at given intervals, a block slidably engaging said member, a pin for fixing said block to said member by engagement with one of said holes, means for adjustably connecting said movable stop to said block, and a registration lock movable with said other part and adapted for positive locking engagement alternately with said fixed stop and said movable stop in its adjusted position, whereby said step of relative predetermined movement of said part may be measured by the movement of said registration lock between its locked position with said fixed and movable stops, and said relatively movable parts may be positively locked at said respective positions.

10. In photographic apparatus of the char acter described, the combination of a relatively stationary part and a relatively movable said parts, a measuring part, means for positively registering said parts at a plurality of predetermined positions comprising a. fixed stop attached to one of said parts, a movable stop attached to the same said part, means for positively selectively setting said movable stop at a measured predetermined linear distance from said fixed stop, said positive settin means comprising a member having a plura ity of holes at given intervals, ablock slidably engaging said member, a pin for fixing said block to said member by engagement with one of said holes, micrometer means for adjustably connecting said movable stop to said block, means for clamping said movable stop in 1ts adjusted position to said member, sa1d block, said attached micrometer adjusting means and said movable stop being readily removable as an assembled unit from the apparatus for the purpose of the micrometer adjustment, and a registration lock movable with said other part and adapted for positive locking engagement alternately with said fixed stop and said movable stop in its adjusted position whereby said steps of relative predetermine movement of said parts may be measured by the movement of said registration lock between its locked position with said fixed and movable stops, and said relatively movable parts may be positively locked at said respective positions. a

11. In photographic apparatus of the character described, the combination of a first part and a second part relatively movable one with respect to the other, means for positively securing said parts against relative movement in each of two directions, means slidably engaging said first part movable with respect thereto in a direction parallel to the relative movement of said part and adapted to be selectively secured positively thereto for movement therewith, registration stop means carried by the said second part providing two stop portions linearly spaced in a direction parallel to said relative movement a predetermined distance one from the other and each adapted for respective cooperative selective interfitting engagement with said slidable means, and means for causing said relativetmovement between said first and second ar s.

12. In photographic apparatus of the character described, the combination of a first part and a second part relatively movable one with respect to the other, means slidably engaging said first part movable with respect thereto in a direction parallel to the relative movement of said part and adapted to be selectively secured positively thereto for movement therewith, registration stop means carried by the said second part providing twostop portions each adapted for respective cooperative selective interfitting engagement with said slidable means, one of said re istration stop means being linearly adjustably attached to a block by fine adjustment means and said stop means may be set a predetermined disblock being linearly adjustably attached to tance one from the other, and means for caussaid second part, both of said adjustments ing said relative movement between said first 10 being in a directionsubstantially parallel to and second parts. I 5 said relative movement of said parts, adapt- In testimony whereof I have signed my ed to be removed from the machine for purname to this specification. poses of setting, whereby said registration OSCAR CHOUINARD.

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