US2266759A

US2266759A - Sheet registering mechanism

Info

Publication number: US2266759A
Application number: US339440A
Authority: US
Inventors: William F Huck
Original assignee: R Hoe and Co Inc
Current assignee: R Hoe and Co Inc
Priority date: 1940-06-08
Filing date: 1940-06-08
Publication date: 1941-12-23
Anticipated expiration: 1958-12-23

Description

EX ross Reference miner 2 266 7 5 9 w. F. HUCK 2,266,759

SHEET REGISTERING MECHANISM Filed June 8, 1940 4 Sheets-Sheet 1 m u m a T N N Wm m W N n M -a A e |lll|||l||||||.l||Illllllllllllllllllll F||1|II| llllllll 3 $2 9 3 ,M 5 l 4 s 4 2 22 6 2 G: I 2 8 Q m e 8 e Dec. 23, 1941.

Cmss Reference W. F. HUCK SHEET REGISTERING MECHANISM Filed June 8, 1940 15G :58 me I I9 /4-8 4| I44 I 42,' 7

/ 22 I35 \Mdw 73 J4 e n L )Q Examiner 4 Sheets-Sheet 2 i8 4 Q so 94 is? INVENTOR W; lliamEHuc/r.

ATTNEY uross Reference Examine,

w. F. HUCK 2,266,759

Dec. 23, 1941.

SHEET REGISTERING MECHANISM Filed June 8,1940 4 Sheets-Sheet 3 INVENTOR Wuuam EHuc/r.

RNEY

25o 22l J has Patented Dec. 23, 1941 UNITED. STATES PATENT OFFICE SHEET REGISTERING MECHANISM William F. Huck, Richmond Hill, N. Y., assignor to B. Hoe & Cos Inc., New York, N. Y., a corporation of New York Application June 8, 1940, Serial No. 339,440

24 Claims.

This invention relates to sheet registering mechanism and more particularly to a mechanism for registering an impression printed on a sheet, with respect to components of a -machine adapted to trim the sheet, perforate it, or perform any operation that must register with the impression.

In sheet trimming machines of the type used for trimming printed sheets of bank notes, and in sheet perforating machines of the type used for perforating printed sheets of postage stamps, it is particularly desirable that the trimmed edges, and rows of perforations be in :register with the impressions printed on the sheets. To obtain this desideratum, it is contemplated as one object of this invention, to provide an improved sheet registering mechanism.

Another object of this invention is to provide in a machine having means to operate upon a printed sheet, means to move the sheet to meister the printed impressions with rmpect to the operating means, and then to hold the sheet in such position during the subsequent operation.

A further object :of this invention .is to provide in a machine having means for operating upon a printed sheet, means to move the printed sheet in any direction in the same plane to meister the printed impressions thereon with the means for operating on the sheet, such as the trimming or perforating means, and means to hold the sheet during the registering and machine operations.

A still further object of this vinveizrticm is to provide in a printed sheet registering mechanism photo-electric means adapted to be actuated by the printed impressions on the sheet to control the operations of the said registering mechanism.

it is also an object of this invention to ,provide a sheet registering mechanism of generally improved construction, whereby the device will be simple, durable and inexpensive in construction, as well as convenient, practical, serviceable and eflicientin its use.

With the foregoing and ether ntiiects in view,

Figure 1A is a schematic side view of the sheet trimming means shown in Figure 1;

Figure 2 illustrates a printed sheet, such as a sheet of bank notes, the edges of which the machine shown in Figure l is adapted to trim in accurate register with the printed impressions;

Figure 3 shows a top plan view of one form of mechanism for registering a printed sheet which includes a sheet holding plate, herein shown in dotted lines for the sake of clearness and means for moving it as required to effect registration;

Figure 4 is a cross sectional view of the sheet holding plate, and an end view of the sheet registering mechanism, shown in Figure 3, in operative association with the sheet holding plate;

Figure 5 is an enlarged cross sectional view taken on the line 5-5 of Figure 3 and showing an end view of a brake device adapted for use with this mechanism Figure 6 is a schematic layout of the cams used in the sheet trimming machine illustrated in Figure 1 for timing the various operations thereof;

Figure 7 is a schematic electrical diagram showing the photo-electric control mechanism of the invention as disclosed in Figures 3 and 4;

Figure 8 is a vertical cross sectional .view of another form of sheet registering mechanism;

Figure 8A is a schematic Side View of a somewhat modified form of sheet trimming means;

Figure 9 is a top plan view of the mechanism shown in Figure 8 looking in the direction of the arrows 9--9 in that figure and indicating the sheet holding plate in dotted lines;

Figure 10 is a sectional view of the mechanism shown in Figure .8 taken below the sheet holding plate supporting frame and showing the motor driven shafts and earns for effecting movements of thesheet holding plate;

Figure 11 is a schematic electrical diagram showing the photo-electrical control mechanism 20f the invention as disclosed in Figures B, 9 and 10;

Figure 12 illustrates a printed sheet, such as a sheet-of postage stamps which requires r istering of the printed impressions thereon with respect to the perforating mechanism before being perforated;

figure 13 is a schematic layout of a sheet perforating machine adapted to perforate the .P inted sheet shown in Figure 12 and to which :either of the sheet registering mechanisms of this invention may be applied; and

Figure 14 is a schematic layout of a somewhat modified arrangement for :moving a sheet holding plate, wherein individual electric motors are used instead of the clutches shown in Figure 3.

Referring now to the drawings and particularly to Figures 1-7 inclusive wherein one form of the invention is illustrated, the trimming machine illustrated schematically in Figure l includes means such as cooperating pairs of rollers H, I2 and I3, |4, rollers I2 and I4 being driven ones to feed printed sheets I5 from a pile I6 thereof toward a plate I1 disposed within a rectangular sheet trimming frame I8 supported on a base and having upwardly facing knife edges I9 around its upper peripheral edge. Four driven rollers 2| and 23 (shown on Figure 1), and 22 and 24 (shown on Figure 4), extend through slots 25 in the plate I1 to engage a sheet I5 thereon to feed it along over the plate against a movable stop member 26, whereby the sheet I5 is initially located with respect to the knife edges I9. running roller 21 and a driven roller 28 are adapted to engage the sheet I5, after it is trimmed and fed along by the rollers 2I--24 inclusive, to feed it to a carrier device 29 wherefrom the sheet is delivered to a pile 3|.

The knife edges I9 cooperate with corresponding knife edges 32 carried by a cam operated swinging frame 33 to trim the edges of the sheet I5 as it is held upon the plate I1. Four rollers 34 carried by a cam operated swinging open frame 35 cooperate with the driven rollers 2I-24 inclusive to feed the trimmed sheets I5 upon and from the plate I1.

Cams

36, 31 and 38 (shown schematically in Figure 6) are secured to a shaft 40 rotatably supported in the frame 20, and driven in timed relation with the sheet feeding rollers I2, I4, 2 I-24 inclusive and 28 from the machine drive. The shaft 40 is rotated once for each complete cycle of operation of the machine, the several cams operating in sequence. The cam 36 raises the stop member 26 into position to locate a sheet I5 being fed over the plate I1, the cam 31 then lowers the frame 35 to engage the rollers 34 with the rollers 2 |-24 inclusive, the cam 38 then lowers and raises the knife carrying frame 33 to trim the edges of a sheet by the cooperating action of the knives I9 and 32, the cam 36 then lowers the stop member 26, and the cam 31 raises the frame 35, while the frame 33 is raised. The

frames

33 and 35, as herein shown, are pivotally supported by a shaft 39, but may obviously be arranged in any other suitable manner.

The plate I1 (see Figure 4) is hollow and has a plurality of perforations 4| in its upper wall by means of which a suction pump (not shown), but which is connected to the plate I1 through a cam actuated valve 42 (Figure 6) and a tube 43, will act to hold a sheet I5 upon the upper surface of the plate I1. The valve 42 is arranged to be opened by a cam 44 as soon as a sheet I5 has been disposed on the plate I1 by the rollers 2I-24 inclusive and 34. The plate I1 is movably supported for movement in any direction in a horizontal plane, on balls 40 carried in boxes 56 mounted upon the frame I8 and positioned under each corner of the plate I1.

Posts

45, 46, 41 (Figure 3) having cylindrical ends 48 which extend upwardly into the plate I1, to permit pivotal movement between the respective posts and the plate I1, also extend downwardly from the plate I1 (as shown in Figure 4) to be engaged by screw threaded

rods

49, 5| and 52 respectively.

The threaded

rods

49, 5| and 52 are screw Beyond the stop member 26 a free threaded into and through the

posts

45, 46 and 41 respectively, and upon being rotated, will effect a swinging movement of the plate I1. The axes of the

rods

49 and 5| are subtsantially parallel while the axis of the rod 52 is perpendicular to the axes of the

rods

49 and 5|. By selection of the rod or

rods

49, 5| or 52 to be rotated, and of the direction of rotation thereof, the plate I1 may be moved in any direction in a horizontal plane to effect registration of a sheet I5 held by suction to the plate I1 with the trimming knives I9 and 32.

Instead of using the clutch operating

solenoids

83, 84, 89, 9I and H9, I2l, as shown in Figure 7 and described hereinafter, the

rods

49, 5| and 52 may be rotated in either direction by separate reversible motors, under control of a means to detect faulty register of the printed impressions, the detecting means being arranged to actuate suitable electrical devices for reversing the motors. Such an arrangement is diagrammatically shown in Figure 14 and will be hereinafter described.

The

rods

49, 5| and 52 are each herein shown connected by universal joints 53 to one end of

shafts

54, 55 and 56 respectively. The

shafts

54 and 55 are arranged to be rotated in supports fixed to the base 20 by means which includes a bevel gear 51 secured on the other ends of the

shafts

54 and 55. The bevel gear 51 is in mesh with

opposing bevel gears

58 and 59 mounted for free rotation on a shaft 6| driven by a motor 62 through a worm-wheel 63 secured on the shaft 6| and a worm 64 secured on the motor shaft 65.

Clutch

members

66 and 61 are formed integral with, or secured to, the

bevel gears

58 and 59 respectively and are disposed in opposed spaced apart relation on the shaft 6| to be selectively engaged by oppositely directed clutch portions 68 and 69 of a sleeve 1| axially slidable on the shaft 6| while being secured thereto by a key 12 on which they slide. A clutch sleeve shifting fork 13, car y g rollers 14 adapted to ride in an annular groove 15 formed in the sleeve 1|, is pivoted at 16 to a stationary post 11. The sleeve shifting fork 13 controlling the rotation of the shaft 54, has a portion 18 extending beyond its pivot 16 into connection at 19, with slidable plungers 8| and 82 of a pair of opposed

electrical solenoids

83 and 84 respectively. The fork 13 controlling the rotation of the shaft 55 has a portion 85 extending beyond its pivot 16 into connection at 86 with

slidable plungers

81 and 88 of solenoids 89 and 9|. A tongue 92, extended beyond the extending

portions

18 and 85, is engaged by the ends of

opposed rods

93 and 94 pressed thereagainst by

springs

95 and 96 respectively, to normally hold the clutch shifting forks 13 in a central position, whereby the clutch portions 68 and 69 of the sleeve 1| will be normally held in a neutral position and out of engagement with the

clutch members

66 and 61 respectively.

The shaft56 is adapted to be rotated in supports fixed to the base 26 and in either direction, by having spur gears 91 and 98 secured thereon which are in mesh respectively with a spur gear 99 and an idler gear IIJI, the idler gear |0| being in mesh with a spur gear I82. The spur gears 99 and I02 are mounted for free rotation upon the shaft 6| and have clutch members I03 and I84 respectively formed integral therewith, which are disposed in opposed spaced apart relatlon on the shaft 6| to be selectively engaged by oppositely directed clutch portions I05 and 'thereagainst by springs I25 and I26 respectively,

"to normally hold the clutch shifting forks I09 \JI Ubb HUIUIUHUU inneutral position and the clutch portions and '5 members normally disengaged.

From "the above, it will be understood that energiz'ation of either of the solenoids '83 or 84 will connect the threaded rod 49 to the driven shaft 6| thrQughthe clutch portions 68 or 69 and members "66 or 61. Rotation of the rod 49 -'will tend to shift one side of the plate I1 generally forward or backward with respect to the direction of the feed of the sheet I5 and about the pivot'48 at the post 46. Likewise, the energization of either of the solenoids 89 or 9| will cause rotation of the rod 5| and tend to shift the opposite side of the plate I1 generally about the pivot '48 at the post 45. Rotation of the rod "52 by energization of the solenoid H9 or I2I *3 will tend to shift the plate I1 generally transversely to the direction of the feed of the sheet I5. "It will also be seen that simultaneous rotation of 'the rods 49 and 5I in the same direction will 'move the plate I1 either forward or back- "w'a'rd in the line of its travel, and if they are simultaneously moved in opposite directions the plate will be swung about the pivot 48 at the -post 41. Thus, selective energization of the solenoids'83, 84. 89, 9|, H8, I2I, under the control of means affected by the position of a printed impression on a printed sheet, will cause the rotation of the

rods

49, 5| or 52 to shift the plate I1 in any direction in a horizontal plane to effect the proper register of the printed impressions on the sheet I5 with the knife edges I9 and 32 *to insure the proper operation thereof to trim the sheet in're'g'ister with the printing.

In order to insure that the registering move- -ments of the

rods

49, 5| and 52 will not overrun beyond the desired amount, brake mechanisms are provided to act upon each of the

shafts

54, 55 and 56 when the clutch sleeve shifting forks are in neutral position. This brake mechanism includes an arm I21 (Figures 4 and 5), 'one end of which is pivotally-connected to and extends from each of the forks to a stationary post I28 to which its other end is pivoted. A cam member I29 is carried by the end of the *arm l21 at the post I28 and is adapted toact uponthe lowerends of a pair of opposed swingable arms l3'I and I32 to spread them apart and thus release brake shoes I33 and I34 from en- "g'a'gem'ent with the respective shaft 54. 55 and '66 with which they are associated. The arms 1 31 and I32 are pivoted together at their uppe'r ends and to a stationary bracket I35. Oppositely 'actin'g springs I 36 and I31 acting on the arms I3I and I32, tend to normally maintain the brake shoes in braking engagement with the respective shaft 'with which they are associated.

The means disclosed herein for automatically and selectively energizing the

solenoids

83, 84, 89, 9|, I I9 and l2-I includes three pairs of photoelectric cells I38--'l3 9,

erasure 2 3 and a 'so'iirce of light for each pair as: cells such as lamps I45, I46 and I41 respectively. Each pair of cells with its associated light source is disposedto be effected in this instance by the printed impressions on the irinted sh'e et 15 The three pairs of photo-electfic *cell's B -V33, HI'I42, and [43-444 and the lamps I45 6, and 141 may be mounted in any convenient manner, such as on a stationary 's'upport 'egr tending from the rear frame of the machine, to a location within the open frame 35 which supports the rollers 34, clearance being provided to permit the small vertical motion of the frame that occurs during operation. As an illustration, the photo-cells are directed at the adjacent "edges of printed impressions, such as those on a sheetof'bank'notes, one pair I38, I39 being disposed adjacent the top of the sheet and affected by vertical edges, one pair I4I, I42 being disposed adjacent the bottom of the sheet and affected by vertical edges, and the other pair, I43, I44, being disposed adjacent the center of the sheet and affected by horizontal edges. Each of the photo-cells controls one of the solen'oids through polarized relays I48, I49, and I5I (Eigure 7), one relay for each pair of cells.

The arrangement is such that each pair of cells is connected into the circuit of the respectivepo'lariz'e'd relay by switches I52, I53 and I54. These ,sw'lt'clie's are simultaneously closed by a cam J55 rotatedin timed relation with the

cams

36, 31 and :38 (Figure 6), "so that the cells will be placed inoperative condition after a sheet "I5 has been Initially disposed on the plate I1 and held there-against by suction, and before the knife carrying frame is lowered to trim the sheet. Referring particularly to Figure '7, the electrical circuit arrangement schematically shown thereinjinclude's line wires LI and L2. The light sources I45, I46, and I41 are respectively connected between the line wire LI and L2 by conductors '156 and I61. One terminal of each cell of each'pair is connected by a conductor I58 to its associated relay I48, I49 or I5I, and the other terminal of'each cell of each pair is connected by In condiictor I59 to the associated switch 152, I53 or I54. Each of the switches I52, 153 or 154 is connected by a conductor ISI -to' the respective relay I48, I49 or I5I. The relay 1481s arranged to close normally open switches I62 and 163, one terminal of each of which is connected to the other and to the line wire Ll 'by aco'n'ductor I64. The other terminal of the switch I62 is connected by a conductor 165 to the solenoid 83, and the other terminal of the switch I63 is connected by a conductor [66 tothe solenoidi l. The

solenoids

83 and 84 are commonly connected to the line wir L2 by a conductor I61,

Thea-clay 1491's arranged to close normally switches 168 and I69, one terminal of each of which is connected to the other and to the line wire Ll byaconductor I1 I. The other terminal pr the switch I68 i's'conne cted by a conductor I12 to th'e solenoid 89 and the other terminal of the switch 189 is connected by a conductor I 13 to the solenoid 8I. Thesolenoids '89 and SI are commonly connected "to the line wire L2 by a conductor I14. The relay 'I5I is arranged to close normally open switches I15 and I16, one terminal 'of each of 'which'is connected to the other and to the line wire LI by a conductor I11. The other terminal'of the -switch I15 is connected by a conductor [18 to the'solenoid H9 and the other ter- 4| l2 n @414 initial or the switch I16 is connected by a con- Examiner ductor I19 to the solenoid I2I. The solenoids II9 and I2I are commonly connected to the line wire L2 by a conductor I8I.

Briefly the operation of the above described sheet trimming machine and the sheet registering mechanism is as follows: A sheet I5 fed from the pile I6 by rollers I2 and I4, and 23, 24 and 2|, 22 to a position upon the plate I1, is initially located thereon by the stop member 26. The cam 44 now actuates the valve 42 to apply a suction to the sheet I5 to firmly hold it against the plate I1, and the cam 31 actuates the frame 35 to raise the pressure rollers 34 from the sheet I5. The cam I55 now closes the switches I52, I53 and I54, placing the cells I38-I44 inclusive in operative condition in respect to the relays I48, I49 and I5I. Should the sheet I5 be out of register, the change in the ratio of the light reflected by the edge of the printed impression, to the light reflected from the unprinted margin space, will affect at least one of the photo-cells, which in turn will actuate its relay switch and energize one of the

solenoids

83, 84, 89, 9|, H9 or I2I to cause the rotation in the proper direction of the proper threaded

rod

49, 5| or 52 and shift the sheet I5 through shifting of the plate I1 and thus register the printed impression with the trimming means I9, 32. When the sheet is in register the light received by each photo-cell and its mate is in balance and the relays I48, I49 and I5I remain in normal position and the

rods

49, 5| and 52 are at rest. If the sheet is out of register both laterally and longitudinally, two of the photo-cells will be affected simultaneously and both of the corresponding correcting mechanisms will operate together.

After a suitable interval of time allowed for sheet registering action has elapsed, the cam I55 opens the switches I52, I53 and I54, and the cam 38 allows the frame 33 to be lowered to trim the sheet. After the sheet I5 is trimmed, the cam 38 raises the frame 33, the cam 44 closes the valve 42 to shut off the suction and free the sheet I5 from the plate I1, the cam 31 lowers the frame 35 to dispose the pressure rollers 34 into cooperating relation with the feed rollers 2|, 22, 23 and 24, and the cam 36 lowers the stop member 26 to permit the trimmed sheet I5 to be fed from the plate I1 to be picked up by the

rollers

21 and 28 and fed to the delivery 29. Before the next cycle of the above operations starts, the plate I1 is preferably brought back into substantially a central position before another sheet I5 is fed thereto, by closing the switches I52, I53 and I54 by proper timing of the cam I55 to connect the cells I38-I44 with the respective relays |48-I5I.

Marks, indicated by dotted lines I (Figure 3) on the plate I1 affect the cells to cause such adjustment of the plate I1.

As hereinbefore stated, separate reversible motors may be used in place of the clutch arrangement shown in Figure 3 to rotate the

rods

49, 5| and 52 through the

shafts

54, 55 and 56. Figure 14, in which similarity to the upper portion of Figure 3 will be noticed, illustrates the use of a separate reversible motor 62a for rotating the rod 49 through the shaft 54, and it will be understood that the rods SI and 52 of Figure 3 may be rotated in like manner through

shafts

55 and 56, each connected to another motor like 620.. In this arrangement, the solenoids 83 and B4, instead of actuating the clutch mechanism of Figure 3, actuate a motor reversing switch 58, and thus the

rods

49, 5| or 52 may be rotated in either direction under the control of the respective photo-electric cells I38I39, I4|-I42 and I43-I44 through the instrumentality of the respective sol- In Figure 14, the

solenoids

83 and 84 are arranged to be operated by the respective photoelectric cells |38I39 through conductors I65I66 in the same manner as shown in Figure 7. In this instance, slidable plungers 8| and 82 are operably connected to a bar 18 instead of the portion 18 of the sleeve shifting fork 13. The bar 18 is pivoted at 16' and connected at to the motor reversing switch 50, so swinging movement of the bar 18 will operate the reversing switch in the well known manner and cause the motor 62' to rotate the rod 49 through the shaft 54 in the direction required to properly move the plate I1 to register a sheet I5. An extension I21 may be provided on the bar 18 to actuate a brake, as in the previously described form.

The circuit to the field of the motor as shown in Figure 14, may be traced from LI through conductors I82 and I82a, through the motor field F and thence through conductor I83 to L2. Rotation of the shaft 49 in one direction will result when the solenoid 83 is energized, for the reversing switch 58 will be moved to bridge the contacts I84 and I85, thereby establishing a circuit from LI through conductor I82, contacts I84, conductor I86, armature of motor 62a, and thence through conductors I81 and I81a, contacts I85, conductors I83a and I83 to line L2. Rotation of the shaft 49 in the opposite direction results, when the solenoid 84 is energized, for the reversing switch will then be moved in the opposite direction to bridge contacts I88 and I89, thus establishing a circuit from LI through conductor I82, contacts I88, conductors H311; and I81 to the armature of motor 62a, then passing through the armature in the reverse direction from that we viously described, and through conductors I86 and I86a, contacts I89, and conductors |83a and I83 to line L2.

Referring now to the form of sheet registering mechanism shown in Figures 8-11 inclusive, the sheet I5 is fed as above described into position over a hollow plate I9I having perforations I92 through its upper wall I93, whereby suction may be used to hold the sheet I5 thereagainst. The plate I9I is supported by balls I in boxes 280 mounted upon the upper edge surfaces of a stationary frame I94 carrying in this instance, the lower sheet trimming knives I95. The upper knives I96 may be secured to a swinging cam operated frame 33' as in the previous form. The photo-cells I38-I44 inclusive (Figure 12), and the light sources I45, I46 and I41 are used with this form of mechanism, and the cells are connected to the polarized relays I48, I49 and I5I in the same manner (see Figure 11) In the form of the invention previously described, a separate cam operated sheet stop 26 was provided, but in this form, sheet stops 26 are secured to the left hand knife I96 (Figures 8 and 8A), to swing therewith. The arrangement is such that the cam 38 provided to lower and raise the knife frame 33 has a camming surface 38a which permits the frame 33' to be held at an intermediate elevation to present the stops 26' in front of the forward edge of the moving sheet while holding the knives separated sufficiently to allow a sheet to pass between them (see dotted lines in Figure 8A). The camming surface 38a is disposed ahead of the camming surface 38b which latter surface acts to permit the knives to lower to trim the sheet. In this form, the shaft 48' is III] driven in timed relation with the

cams

250, 253 and 265 by being drivingly connected to the'shaft 253 by bevel gears 40a and 40b (Figure While in the form shown in Figures 1' to 7, the plate 1'1 was adapted to be shifted in any direction in the same plane to register a sheet by mechanical means actuated by solenoids controlled by the photo-cells, in this form, the plate 191 is adapted to be shifted by a combination of magnetic and mechanical means. This combination includes a pair of catch lugs 191 and 198 formed integral with, or secured to, the underside of the plate 191 adjacent a side edge 199 and being spaced apart in the direction of the feed of the sheets 15. Another pair of catch lugs 201 and 202 identically formed and spaced apart, are disposed adjacent the other side edge 203 of the plate 191. Still another pair of catch lugs 204 and 205 are formed integral with or secured to the underside of the plate 191, and are spaced apart transversely to the direction of the feed of the sheets 15, and are disposed substantially on the medial line of the plate 191, between its

opposite edges

206 and 201. The catch lugs 191,201 and 198, 202 have their

catch shoulders

208 and 209 facing the opposite edges 205 and 20'! respectively of the plate, while the catch lugs 204 and 205 have their catch shoulders 2| 1 and 212 facing the side edges 203 and 199 respectively of the plate 191.

Stop lugs 213 and 214 also formed integral with or secured to the plate 191, depend from its underside and are spaced from the catch shoulders 20B and 209 of the catch lugs 191, 201 and I 98, 202 respectively toward the opposite plate edges 206 and 201. Other stop lugs 215 and 219, likewise formed integral with or secured to the plate 191, depend therefrom and are spaced from the catch shoulders 211 and 212 toward the opposite plate edges 203 and 199 respectively of the plate 191. Catch arms 2" and 218, pivotally fastened to opposed swingable

elongated arms

219 and 221 respectively, extend outwardly therefrom toward the opposite plate edges 206 and 20'! respectively and are adjacent the plate edge 199.

Catch members

222 and 223 on the free ends of the

arms

211 and 218, are adapted to normally lie in engagement with the catch shoulders 208 and 209 of the catch lugs 191 and 198 respectively by the upward urge of spring pressed pins 224. The catch arms 21'! and 218 extend over

electromagnets

225 and 229 respectively, which are respectively carried by and at the upper ends of the

arms

219 and 221, and when energized, act upon the catch arms 21'! and 218 to pull them downwardly and disengage the

catch members

222 and 223 from the respective catch shoulders 208 and 209. The

catch members

222 and 223 are disposed between the catch shoulders 208 and 209 and the stop lugs 213 and 214 and'their outer ends are adapted to engage these stop lugs when the

elongated arms

219 and 221 are swung outwardly by the cam 250, thereby moving the atfiacent end of the plate 191 to a central position between the knives 195 acting on'theforward and rear edges of the sheet;

Catch arms 22'! and 228, pivotally fastened to opposed swingable elongated arm's 229 and 231 respectively (Figure 10), extend outwardly therefrom toward the plate side edges 205 and*201 respectively and are adjacent the plate edge 203. Catch members 232 and 233 (Figure 9)"on'tlre free ends of the arms 22'1'and 228, are adapted to normally lie in engagement with the catch shoulder .208 and 299 of the catchilugs 201 and 2 02 respectively by the upward urge of spring presse'dpins'224; The catch arms 22! and 228 extend over

electromagnets

234 and 235 respectively, which are respectively carried by and at the upper ends of the

arms

229 and 231, and when energized, act upon the catch arms 22! and 228 to pull them downwardly and disengage the

catch members

232 and 233 from the respective catch shoulders 208 and 209. The

catch members

232 and 233 are'disposed'between the

catchshoulders

208 and 209, and the stop lugs 213 and 214 and their 'outerends are adapted to engage these stop lug's when the

elongated arms

229 and 231 are swung outwardly by the cam 252, and similarly center the adjacent end of the plate 191.

"'

Similar catch arms

236 and 231 pivotally fasten'ed to'opposed swingable elongated arms 238 arld239 respectively extend outwardly therefrom toward the plate side edges 203 and 199 respectively. Catch members 241 and 242 on the fr'eeends of the

arms

239 and 231 are adapted to 'ndr'inally lie in engagement with the catch shoulders '2'11'and 212 of the catch lugs 204 and 205'respectively, by the upward urge of spring pressed pins'243. The

catch arms

236 and 23! it nd over electromagnets 244 and 24s respectively, which are carried by and at the upper ends of'the arins 238 and'239, and when the magnets ai'eenergized, they act upon'th'e catch arms 236a11d 231 to pull themdownwardly and disenga'ge the catch members 241 and 242' from the re- 's'pective catch shoulders 211 and 212, in a manner' similar to the action of the magnets carried by the arms 2I9 22I, and 229-231. The catch members 241 and 242' are disposed between the catch shoulders 21 1 and 212 and the stop lugs 215 and 219, and their outer ends are adapted to engage these stop lugs when the

elongated arms

238 and 239 are swung outward by the cam 256 thereby moving the plate 191 to a central position between 'the knives that cut the side edges of the sheet.

.The

elongated arms

219 and 221 extend downwardlyand are pivoted to a stationary bracket 246; and the

elongated arms

229 and 231 are similarly arranged and extend downwardly and are 'pivotedto a' stationary bracket 241. The

elongated'arms

238 and 239 extend downwardly and are pivoted to

stationary brackets

248 and 249 respectively. A compression spring 251 (Figure 8)"is provided adjacent the upper end of each 'of the elongated arms 2'19, 221, 229 and 231, and are arranged to react between the respective arm and the stationary frame 194 to constantly urge the opposed arms 2I9,' 221', and 229, 231 toward each other.

Cams

250 and 252 are secured to a cro ss' shaft 253, and are'disposd respectively between" each pair' of

opposed arms

219, 221, and 229 231 'to' be engaged by a roller 254 mounted on each of the arms. A compression spring 255 (Figure 9) is provided adjacent the upper end of each of the

elongated arms

238 and 239 to constantly urge them toward each other. A cam 255 mane 10) secured preferably on the output shaft 258 of a combined electric motor and reducing gear 251 is disposed between the opposed elongated arms 2'38 and 239 to be engaged by a roller 259 mounted on each of the arms. The output shaft 258 has a bevel gear 261 secured thereto which is in mesh with-abevel gear 292 secured on the'cross shaft 253.

A cam 263 secured on the shaft 253 is formed to engage and actuate a valve 254 which controls the suction for the plate 191, whereby the 1 1 1 '5 1 9 Q P 1 3 15 p termined Examiner 2'52 and 256 under urge of the springs I and Rotation of the

cams

256, 252 and 256 will cause movement of the elongated arms 2I9-22I, 229-23I and 238-239 as the cams are rotated from a position where a

roller

254 or 259 is engaged by a high portion of the cam, to a position where a low portion of the cam is opposite the roller. After the energization (by action of the photo-cells), of either or both magnets of each of the three pairs of electromagnets carried by the elongated arms, and the consequent withdrawal of their catch members from engagement with the cooperating catch lug, movement of any elongated arm carrying a released catch member, as such arm is moved toward the center of the cam, will have no effect on the plate I9I, but if any catch member is in engagement with a catch lug on the plate, when the elongated arm carrying it is moved inward, the plate will be moved in the same direction, the motion being continued until it is stopped by energization of the electromagnet carried by that arm, which action occurs when proper registration of the sheet affects a pair of photo-cells, and through their relay, energizes the electromagnet.

The cells I38, I39, I4I, I43 and I44 (Figure 12) with their associated light sources I45, I46 and I41, and the polarized relays I48, I49 and I5I (Figure 11) are adapted for use, as in the previously described form of registering mechanism, for selecting the desired electromagnet of this mechanism to be energized, to obtain the proper movement of the plate I9I to register the sheet I5 with the printed impression thereon. The electric circuit for this form of registering mechanism wherein electromagnets are used, is also schematically shown and it will be observed that the circuit for the light sources I45, I46 and I41, and the circuits and connections between the cells I38-I44 inclusive, and the respective relays I48, I49 and I5I are very similar to those of the previously described form, but with the following difierences. The cam operated switches I52, I53 and I54 of the first form have been replaced by the cam operated

switches

266, 261 and 268, and that the cam I55 for actuating these switches has been replaced by the cam 265.

The electric circuits from the relays I48, I49 and I5I of the electromagnets are different from those used in the previous form to the clutch actuating solenoids, due to the addition in this latter form, of magnetic means to hold the plate I9I in its adjusted sheet registered position. This magnetic plate holding means includes electromagnets 21I, 212 and 213 respectively disposed along the transverse axis of the plate I9I, one adjacent the side edge I99, another adjacent the side edge 263, and the other at the center. The electromagnets 21I, 212 and 213 are supported directly beneath the plate I9I by

cross bars

214, 215 and 216 respectively. The arrangement is such that when the registering control electromagnets are not energized, the plate holding magnets are energized; this being efiected by the closing of a switch 269 by the cam 265, and the switches 294, 295 and 296 which are closed by the

coils

284, 285 and 286 respectively, which are in turn energized by circuits through the normally closed switches of relays I48, I49 and I5I.

The switch 269 controlled by the cam 265 is connected by a conductor 281 to the line wire LI and by a conductor 288 to a common conductor 289 to which normally open switches 294, 295 and 296 are connected by conductors 29I, 292 and 293 respectively, these switches being connected by

conductors

291, 298 and 299 to the plate holding magnets 21I, 212 and 213; each of which are connected to the line wire L2 by a conductor 36I. Normally closed switches 362, 363 and 364 are each connected to the line wire L2 by a conductor 365 and are respectively connected to one terminal of the

plate shifting magnets

225, 226, 234, 235 and 244, 245 by conductors 366, 361 and 368. The opposite terminals of the plate shifting magnets are respectively connected by conductors 369, 3, 3I2, 3I3, 3I4 and 3I5 to one terminal of each of the normally open switches 3I6,

' 3I1, 3I8, 3I9, 32I and 322 which in pairs are such as the trimming knives.

under the control of the relays I49, I46 and I5I respectively. The other terminal of the switches 3I6 and 3H at the relay I49, are connected together by a conductor 323, and to the common conductor 289 by a conductor 324. The other terminal of the switches 3I8 and 3I9 at the relay I48, are connected together by a conductor 325, and to the common conductor 269 by a conductor 326. The opposite terminals of the switches 32I and 322 at the relay I5I, are connected together by a conductor 321 and to the common conductor 289 by a conductor 328.

One terminal of each of the normally closed

switches

211 and 218 at the relay I48 is connected by a conductor 329 to the other. One terminal of each of the normally closed switches 219 and 28I at the relay I49 is similarly connected by a conductor 33I. One terminal of each of the normally closed

switches

282 and 283 at the relay I5I, is similarly connected by a conductor 332. The other terminals of the

switches

211, 219 and 282 are connected by a conductor 333 to the common conductor 289, and the other terminals of the

switches

218, 28I and 283 are connected by a conductor 334 to the

respective coil

284, 285 and 286, each of said coils being connected by a conductor 335 to the line wire L2. As in the previously described form, the plate I9I is centralized during the interval a trimmed sheet I5 is being removed and another fed to the plate I9I. This is accomplished by the action of the outer ends of the respective catch arms upon the stop lugs adjacent thereto. Thus, as soon as the switches 266-269 are opened by the cam 265, the catch arms snap away from the respective electromagnets. and due to the movement given them by the

respective cams

256, 252 and 256 through the respective elongated arms, engage the stop lugs to centralize the plate I9 I.

By means of the above described electrical control circuit, the form of sheet registering mechanism shown in Figs. 8-11 inclusive, will operate to efficiently register the printed impressions upon a sheet with the means to operate thereon,

As in the previously described form, the photo-cells when affected by improper register of impressions, will effect energization of one or more of the registering control magnets, but in the form presently under consideration, one or more of the catch arms 2I1 or 2I8, 221 or 228, and 236 or 231 will be energized, thereby allowing the other catch arm of the pair to move the plate to the extent necessary to effect registration, when the catch arms are moved by the movement of the elongated arms under influence of the springs 25I or 255. When the plate has been moved to the extent necessary to bring the sheet into the proper registration, the catch arm that has been engaged to move the plate will be attracted by its magnet, stopping movement of the plate at the proper position.

Due to the interlocking switches actuated by the

coils

284, 285 and 286 under the control of the switches 211-218, 219-28I, 282-283, only the plate holding magnet 21I, 212 or 213 associated with the particular registering control magnet energized will be deenergized to permit shifting of the plate I9I. Rollers 336, 331- and 338 (Figure 9) journaled in each of the plate holding magnets 21I, 212 and 213 respectively, lightly engage the plate I3I when these magnets are deenergized, whereby no drag upon the plate I9I will be experienced when shifting action is taking place at the released point, but when the holding magnets are energized these rollers grip the plate and in conjunction with other portions of the magnets, hold it securely.

Briefly the operation of the latter form of sheet registering mechanism is as follows, assuming that a sheet I5 has been initially disposed upon the plate HI and the cam 263 has opened the valve 264 to secure the sheet I5 to the plate I9I by suction. At this point in the operation of the mechanism, the cam 285 closes the switches 286-269 inclusive so that the

coils

284, 285 and 286 are energized to open the switches 302, 303 and 304, and to close the

switches

294, 295 and 295, whereby the plate holding magnets 21I, 212 and 213 are energized and are acting on the plate I9I to hold it in position and down upon the

respective rollers

336, 331 and 338.

The

switches

266, 261 and 268 being closed, the circuits of the cells I38-I44 inclusive are completed to the respective relays I48, I49 and I5I. Now should one or more of the cells be affected due to the sheet I5 being out of register with a printed impression thereon, for instance the cell I38, the relay I48 will be actuated to open the switch 211 and close the switch 3I8. Opening of the switch 211 will deenergize the coil 264 whereupon the switch 295 will open and the switch 303 will close. Opening of the switch 295 will deenergize the plate holding magnet 212 to release the plate at this point. Closing of the switches 3I8 and the switch 303 will energize the registering magnet 234 and pull the catch arm 221 downwardly to release it from the catch lug 20I. The high portions of the

cams

250, 252 and 256 now rotate beyond the

rollers

254 and 259 that are carried by the respective elongated arms 2 I 9-22 I, 22923I and 238239, and the arms are moved inward by the respective springs 25I and 255. The catch arm 228 being in engagement with the catch lug 202, the inward movement of the arm 228 will move the plate I9I toward the left as seen in Figures 8 and 9, the motion being continued until the point of proper registration is reached, at which time the action of the cells I38 and I39 will balance, deenergizing the relay I48 and thereby closing the switch 211 and opening the switch 3I8, which in turn will energize the coil 284 closing the switch 295 to energize the plate holding magnet 212. vA similar action will take place whenever any one of the cells I38-I44 inclusive are affected by the edge of the printing impression being out of register with the cutting knives or other means operating upon the sheet I5. Thus the mechanism is adapted to move the sheet I5 through the instrumentality of the plate I! in any direction in the plane of its surface.

In instances where a sheet 34I (Figure 12), having printed impressions 355 thereon is to be provided with perforations, marks, or indentations 356 which outline the impressions by being formed in the sheet 34I in vertically and horizontally disposed rows between the impressions thereon, as in the case of sheets of perforated postage stamps, it is desirable to include a sheet registering mechanism in the structure of a machine adapted to so perforate it. Such a combination is shown in Figure 13 wherein the sheets 34I are suitably fed from a pile 342 by driven rollers 343 and 344 and cooperating

pressure rollers

345 and 346 respectively, into an initial position over a plate I1 or I9I of the desired registering mechanism described above. The registering mechanism selected then operates to register the printed impressions on the sheet 34I with timed sheet feeding or transfer means, in a manner as described, and the sheet 34I is then released and picked from the plate I1 or I9I by grippers 341 carried on an accurately timed transfer chain 348 and by it transferred to cooperating sheet perforating cylinders 349 and 35I whereby the sheet 34I is perforated, or impressed transversely of the direction of its travel. From the cylinders 349 and 35I, the sheet 34I is transferred by further movement of the timed transfer chain 348 to which it is secured by grippers 341 to cooperating

sheet perforating cylinders

352 and 353 whereby the sheet is perforated, or the like, in the same direction as it is moving and perpendicular to the first perforations. From the

cylinders

352 and 353, the sheet is delivered to a pile 354.

It will be understood that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present embodiments be considered in all respects as illustrative and not restrictive, and it will be further understood that each and every novel feature and combination present in or posessed by the mechanism herein disclosed forms a part of the invention included in this application.

What I claim is:

1. In a machine having means for operating on printed sheets in register with the printed impressions thereon, a sheet support, a plurality of photo-electric cells positioned to detect improper register of the printed impressions on a sheet deposited on the support, with respect to the said means, and electrically actuated means controlled by the photo-electric cells for moving the sheet in the plane of its surface in any direction as required to bring the printed impressions into register with the operating means.

2. In a machine having means to operate on printed sheets, a sheet holder, means to move the sheet holder to shift the sheet in any direction in the plane of its surface when on the holder, and means to detect improper register of the printed impressions on the sheet in respect to the operating means and to control the actuation of the sheet holder moving means, to register the printed impressions on the sheet on the holder with the operating means.

3. In a machine having means to operate on printed sheets to provide a uniform border about printed impressions thereon, a sheet holder movable in any direction in the plane of the surface of the sheet held thereby, means to move the sheet holder, and means to detect improper register of the printed impressions on the sheet in respect to the operating means and to control the actuation of the sheet holder moving means to register the printed impressions with the operating means.

4. In a machine for trimming printed sheets, cutting mechanism adapted to trim a plurality of the edges of a sheet in register with printed impressions thereon, a sheet support, a plurality of photo-electric cells positioned to detect improper register of the said impressions on a sheet deposited on the support with respect to the cutting mechanism, and means controlled by the photo-electric cells for moving the holder to shift the sheet in the plane of its surface in any direction as required to bring the printed impressions into register with the cutting mechanism.

5. In a machine having means for operating on a printed sheet to provide a uniform border about printed impressions thereon, a sheet support movable in any direction in the plane of the sheet supported thereby, a plurality of detecting devices positioned to detect improper register of the printed impressions on the sheet with the operating means, and means controlled by said detecting devices for moving the sheet support to shift the sheet to register the printed impressions thereon, with the operating means.

6. In mechanism for registering impressions printed on a sheet with an operable device for operating upon the sheet to provide a uniform border about the printed impressions thereon, a sheet support movable in any direction to shift the sheet supported thereby in the plane of its surface, means to so move the sheet support, and a plurality of photo-electric devices positioned to detect improper register of the printed impressions, with the device for operating on the sheet, and to control the actuation of the sheet support moving means.

7. In mechanism for registering impressions printed on a sheet with an operable device for operating upon the sheet to provide a uniform border about the printed impressions thereon, a sheet support movable in any direction to shift the sheet supported thereby, in the plane of its surface, means to so move the sheet support, releasable means to hold the sheet support at the position into which it is moved, and a plurality of photo-electric cells positioned to detect improper register of the printed impressions, with the device for operating on the sheet, and to control the actuation of the sheet support moving means.

8. In mechanism for registering impressions printed on a sheet, with an operable device for operating upon the sheet to provide a uniform border about the printed impressions, a sheet support movable in any direction to shift the sheet supported thereby in the plane of its surface, means to so move the sheet support, releasable means to hold the sheet support at the position into which it is moved, a plurality of ph'otoelectric cells positioned to detect improper register of the printed impressions, with the device for operating on the sheets and to control the actuation of the sheet support moving means, and electrically operable means controlled by the photo-electric cells to release the sheet support holding means.

9. In combination with means to operate upon a sheet, mechanism for registering printed impressions on a sheet with the means to operate upon the sheet, a sheet supporting member movable in any direction in a single plane, means to so move the said member, and means affected by the position of the printed impressions on the sheet, in respect to the means to operate upon the sheets, in control of the member moving means.

10. In combination with means to operate upon a sheet, mechanism for registering impressions printed on a sheet, with the means to operate upon the sheet, a sheet supporting member movable in any direction in one plane, the said member moving means and the control means therefor being operable when a sheet is removed from the member, to effect movement of the member back into its initial position to receive another sheet, and means affected by the position of the printed impressions on the sheet, in respect to the means to operate upon the sheets, in control of the member moving means.

11. In combination with means to operate successively upon a plurality of sheets, mechanism for registering impressions printed on a sheet with the means to operate upon the sheets, a sheet supporting member movable in any direction in one plane, means to so move the said member, means operable when a sheet is moved away from the member to efiect movement of the member back into its initial position to receive another sheet, and means affected by the position of the printed impressions on each sheet, in

w respect to the means to operate upon the sheet,

in control of the member moving means.

12. In combination with means to operate successively upon a plurality of sheets, mechanism for registering impressions printed on a sheet with the means to operate upon the sheets, a freely supported sheet holding plate, means to move the plate in any direction in one plane only, means adjacent opposite edges of the plate adapted to be engaged by the plate moving means to move the plate generally in one direction, means ad- J'acent the center of the plate adapted to be engaged by the plate moving means to move the plate generally in a direction perpendicular to the first mentioned movement, and means affected 1 by the impressions printed on the sheet, to selectively actuate the plate moving means.

13. In combination with means to operate successively upon a plurality of sheets, mechanism for registering impressions printed on a sheet,

'' with the means to operate upon the sheets, a

freely supported sheet holding plate, means to move the plate in any direction in a single plane, means adjacent opposite edges of the plate adapted to be engaged by plate moving means to move the plate generally in one direction, means adjacent the center of the plate adapted to be engaged by plate moving means to move the plate generally in a direction perpendicular to the first mentioned movement, means operable when a sheet is removed from said plate to efiect movement thereof back into its initial position to receive another sheet, and means affected by the impressions printed on the sheet to selectively actuate the plate moving means.

14. In combination with means to operate upon a sheet, mechanism for registering impressions printed on a sheet, with the means to operate upon the sheet, a freely supported sheet holding plate, means to move the plate in any direction in a substantially horizontal plane, means adiacent opposite edges of the plate adapted to be engaged by plate moving means to move the plate generally in one direction, means adjacent the center of the plate adapted to be engaged by plate moving means to move the plate generally in a direction perpendicular to the first mentioned movement, means affected by the printed impressions on the sheet, to selectively actuate the plate moving means, and marks on the plate adapted to be affected by the actuating means to cause it to actuate the plate moving means to substantially centralize the plate when a sheet is removed therefrom.

15. In combination with means to operate upon a sheet, mechanism for registering impressions printed on a sheet, with the means to operate upon the sheet, a sheet supporting member movable in any direction in a substantially horizontal plane, means to so move the said member, and means afiected by the position of the printed impressions on the sheet, in respect to the means to operate upon the sheet, in control of the member moving means, and releasable means to hold the sheet supporting member in the position to which it is moved, while the operating means is being actuated.

19. In a trimming machine for sheets having impressions printed thereon, a plurality of cut ting knives, a sheet feeding mechanism having means to advance a sheet to a sheet support freely movable in all directions, a stop to limit the motion of the sheet, a plurality of means to move the sheet support and to hold it in position, means for holding the sheet on the support, a plurality of photo-electric cells affected by a plurality of impressions on the sheet and acting on the support moving means to position the support with each impresion in a desired position, means to actuate the cutting knives,means to remove the stop from the path of the sheet, and means to forward the sheetto a delivery, all of said means heing directly connected to and operated by the 16. In combination with means to operate upon a sheet, mechanism for registering impressions printed on a sheet, with the means to operate upon the sheet, a freely supported sheet holding plate, means to move the plate in any direction in a substantially horizontal plane, means adjacent. opposite edges of the plate, adapted to be engaged by the plate moving means to move the plate generally forwardly and backward, means adjacent the center of the plate adapted to be engaged by plate moving means to move the plate generally in a direction perpendicular to the first mentioned movement, mean affected by the printed impressions on the sheet to selectively actuate said plate moving means, and releasable means to hold the plate in the position into which it is moved while said operating means is being actuated.

1'7. In a mechanism for positioning a sheet having impressions thereon that is to be cut in a precise relation with the impressions, a support for the sheet freely movable in a substantially horizontal plane, means for moving opposite sides of the support forward and backward, means to move the support bodily in a line substantially perpendicular to the edges of the said sides of the support, and photo-electric means disposed to be afiected by a plurality of spaced apart impressions printed on the sheet, and adapted to control the operation of the said plate moving means to so position the plate, that the sheet thereon will be out in the desired precise relation with the impressions.

18. In a mechanism for positioning a sheet having impressions thereon that is to be cut in-a precise relation with the impressions, a sheet support freely movable in a substantially horizontal plane, means for moving opposite sides of the support forward and backward, means to move the plate bodily in a line substantially perpendicular to the edges of the said sides of the support, and photo-electric means disposed to be affected by a plurality of spaced apart impressions printed on the sheet, and adapted to control the operation of the said plate moving means to move the plate bodily in any horizontal direction and to swing it as may be necessary to so position the plate that the sheet thereon will be cut in the desired precise relation with the impressions.

machine.

20. In a machine having means for operating on sheets, a sheet support, a plurality of photoelectric cells positioned to detect improper register of printed impressions on a sheet held on the support with respect to the said means, and motor operated means controlled by the photo-electric cells for moving the support longitudinally and transversely in a horizontal plane as required to bring the printed impressions into register with the operating means.

21. In a machine having means for operating on sheets, a sheet support, a plurality of photoelectric ells positioned to detect improper register of printed impressions on a sheet held on the support with respect to the said means, electrically operated means controlled by the photoelectric cells and actuated when necessary to move the support longitudinally and transversely in a horizontal plane as required to bring the printed impressions into register with the operating means.

22. In a machine having means for operating on sheets, a sheet support, a plurality of photoelectri cells positioned to detect improper register of printed impressions on a sheet held on the support with respect to the said means, and cam operated means controlled by the photo-electric cells and actuated when necessary to move the support longitudinally and transversely in a horizontal plane as required to bring the printed impressions into register with the operating means.

23. In a machine having means for trimming printed sheets, a sheet support on which a printed sheet is held, a plurality of photo-electric cells positioned to detect improper register of impressions on the printed sheet, with respect to the trimming means, and a plurality of means operably controlled by the photo-electric cells for moving the support longitudinally and transversely in a horizontal plane as required to bring the printed impressions into register with the trimming means.

24. In a machine having means to successively cut a plurality of sheets each having a similar device whereby it may be registered, a sheet holder, means to move the sheet holder and a sheet thereon, to shift the sheet in any direction in the plane of its surface, and means to detect improper register of the device of each sheet, in respect to the cutting means, and when improper register exists, to control the actuation of the sheet holder moving means to move the device of the sheet into proper register,- whereby a plurality of sheets may be successively cut in the same relation to their registering devices.

WILLIAM F. HUCK.