US1071043A - Plate-printing press. - Google Patents

Description

PLATE PRINTING PRESS. 1021101111011 1111211901 28, 1911. RENEWED DB0. 26.1912. 1 1,071,043. Patented. Aug. 26, 1913.

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PLATE PRINTING PRESS. APPLIOATION 11.31) mum-1911. RENEWED DBO. 26, 1912.

Patented Aug. 26, 1913,

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G. H. GIHON.

PLATE PRINTING PRESS. APPLICATION FILED 00128, 1911. RENEWED DEC. 26, 1912.

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PLATE PRINTING PRESS.

APPLICATION FILED 001. 2a, 1911. RENEWED DBO. 26,1912.

.5 11,071,043. Patented Aug. 26,1913.

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G. H. GIHON.

PLATE PRINTING PRESS.

APPLICATION FILED 00128, 1911. EENEWEJ) DBO. 2a, 1912.

1,07 1 ,043 Patented Aug. 26, 1913.

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Wblmwow Z60 GEORGE H 6/H0/v COLUMBIA PLANOGRAPl-l C0,, WASHINGTON D c awe/whom UNITED STATES PATE T. OFFICE.

GEORGE H. GIHON, F BERKELEY, CALIFORNIA.

PLATE-PRINTING- PRESS.

Specification of Letters Patent. Patented Aug, 26 1913,

Application filed October 28, 1911, Serial No. 657,280. Renewed December 26, 1912. Serial No. 738,753.

. To all whom it may concern:

Be it known that I, GEORGE H. GIHON, a citizen of the United States, residing at Berkeley, in the county of Alameda and State of California, have invented certain new and useful Improvements in Plate Printing-Presses, of which the following is a specification.

This invention relates to improvements in the art of plate printing and has special reference to an improved form of rotary plate printing press such as is adapted for printing cards, and other like articles from an engraved plate.

This invention is an improvement on a patent granted to me, January 23rd, 1906, on printing apparatus, and bearing the No. 810,743.

. One object of the. present invention is to improve the manner of applying power to the press for its actuation.

A second object of the invention is to improve the means for removing surplus ink from the plate and polishing said plate.

A third object of the invention is to provide means for stopping the plate at each revolution in order that the polishing may be finished by hand. It is a well understood fact that presses have been designed for plate printing wherein entire dependence was'placed on mechanical cleaning and polishing, but no mechanical appliance accomplishes the polishing in the perfect manner that is accomplished by the use of the human hand, and I, therefore, arrange to stop the plate carrier at each revolution in a predetermined position convenientto the operator so that the final polishing may be done by the operators hand.

The inventioniconsists in general of cerff tain novel features of construction and combinations of parts, hereinafter fully described, illustrated in the accompanying drawings, and specifically set forth in the claims.

In theaccompanying drawings like characters of reference indicate like parts in the several views, and Figure 1 is a right hand side elevation. Fig. 2 is a left hand side elevation. F ig. 3 is a partial detail view taken from the right side of the machine with the right hand supporting frame removed. Fig. 4 is a $16.6 elevation of the rotary plate carrier frame. Fig. is a plan view of the mechanism shown 1n Fig. 4. Fig. 6 is a rear elevat on of the machine,

with certain of the parts broken away in the plate holder. 14 is a view in front elevation.

The device is mounted on a suitable base and'is supported between right and left side frames 1 and 2, respectively. Between these side frames is a rotary plate carrier which is designated in general by the numeral 3 and is mounted on a shaft 4 supported in suitable bearings in the frames 1 and 2'. This shaft is alsosupported in an outer bore bearing 5 formed at the upper end of one arm by a bracket 6 which is suitably secured to the frame 2. The plate carrier 3 is keyed or otherwisefixedly secured to the shaft 4 and on this plate carrier is a swinging plate holder 7 which is pivotally mounted on a bracket 8 formed on the carrier. The end of the carrier is concentric with the axes of the shaft 4 and the plate holder 7 is curved to conform .with this end so that when in position for printing it also will be concentric with the axes of the shaft. Upon the underside of the plate holder is a bifurcated lug 9 between the arms of which is pivoted one end of a. rod 10 which passes through a suitable slot in the end ofthe carrier 3 and terminates in a lug 11 substantially at ricrht angles to the body. This lug passes a so through a suitable slot in the side of the carrier frame and has attached thereto one end of a spring 12, the other end of said spring being attached to a fixed lug 12, which is fixed upon the side of the plate carrier, the arrangement being such that the rod 10 is constantly urged inwardly toward the shaft 4. In both sides of the carrier frame there is provided a slot 13 through which passes a pin 14 which extends through the lug 11 and is fixedly attached thereto. Upon the shaft 4 is a cam 16 wherewith the extended end of the pin 14 contacts as the gear frame rotates. It is to be observed that this cam 16 is mounted on the shaft 4 and is prevented from rotating with reference to the frame by being secured to the frame 2. From the foregoing it will be observed that through the rotation of the device a plate carrier will r of rest the p'late hojlderv will be presentedto; the operator :insuch ;position;as to be most;

be moved to open position at a predeterj mined point while at all other points it willv be closed tightly down "against the end of the carrier frame by the action of said spring 12. This closed position is the norinal pos ition .of the carrier and the parts are ar-. ranged in such a manner that the angle of" oscillation of the plate holder -7 is substanrier. By means oftheplateholder opening as tially 45.

hereinbefore described access is had to the accessible to his hand. The plate holder also holds the :plate in convenient position for removal and replacement.

22 is carried byapair of ar1ns21 whichare pivoted to certain arcuate bars 17 .slidably.

mounted insuitableslots 17 formed in the sides of the plateholder 7. 'Thekjaw 23 is fi-xedso, that by this means the. jaw .22 may be caused'to move to, or from the jaw 23,-

thus accommodating different sized "plates. In order to:h0ld 'Ethese parts in adjustment the bars 17 areprovided withangularly disposed ends 17 and onthezplate holder isa tightening the nut, the jaw 22 is held :in

lug 18 having anarcuate slot 18". The end 17 P carries a clamping nut and bolt '19 which passes through theslot 18. so .that :by

" adjusted relationwith reference to the jaw V 23. v A screw .20 is provided for the purpose with oneiedge engaged by thejaw23. The

of securingthe arms21inlocked position.

In placing a plate inthe device, the plate,

indicated'at 2 1, is laid'upon theplate holder screw 20'is loosened and the arms 21 swung outwardcarrying with them the jaw 22.

The plate then has its other-endengaged by the jaw 22, the'plate being b'ent down upon the plate holderfor'this purpose and thejaw swung inwardly against said edge. The

screw 20 is then tightened and the plate is held in position ready for use.

At 25 is indicated a card feeding device of a construction hereinafterto be described."

This card feeding device is actuated by a lever 26 which is carried by the carrier frame 3, and operates to feed a single card between theoscillating pressure segment 27 and the plate 24 as the latter pass'esbeneatln said segment. 'This oscillating segment 27 is carried upona shaft 28 which is mounted insuitable -bearings-28 which are slidable in slots 28 f'formed in the framemem'bers 1 and 2. Bearings 28 are held in elevated also-keyed a gear segment 29 and a'counterweight 30 which acts to restore the members position by means of suitable springs 28 which are placed beneath'them and'the shaft '28 is adjusted for height by 'meansof adjustingsorews 28. Upon the shaft 28 is This plate :holder includes jaws 22rand 23, and the jaw,

ithe frame '1.

to: bring 1 the segment 27 in contact with a stop 31.

thus:opera-tes the member 27. In the lever .26 is a slot26 and inthe bar 32 is a similar slot 32 side of the carrier frame 3 and fixed'to this shaft arecranks 37 'which areprovided with gpins 36 and36 which extend through the slots :26 and 32", respectively. The pin-36 iis arranged to engage over a'cam 40 which is jcarriedon an arm 41 pivoted to the frame 1. The outer-end of this arm is provided with a latch 4L1 which engages in oneof a series of notches cut in a segmented", secured to By means of this mechanism as. the pin 36? .passes over the-cam both the. bar 32 :and the arm 26' will be forced outwardly. For the purpose of retarding this bar andarm the shaft35 is provided with a :crank arm 35 which extends in a direction opposite to the other crank arms and to this icrank arm is connected a spring 35 the other end of saidspring being connected to a stationary lug 35 fixed =u'pon' the'carrier iframe. Furthermore, the spring tends to hold the pin '36 constantly in engagement wviththe-cam during its passage thereover. This cam is'arcuate in form but too great retraction of the bar and arm is prevented .by reason of the fact that a slot formed between the arms 32 -of the arm 32 is only i of such depth as to permit the proper re 3 traction.

Turning nowto the manner inwhich the plate is inked, onthe side opposite the card delivery mechanism is a shaft 63 which is journaledin suitable bearings in the frame and straddling 'this'shaft are the bifurcated ends of the arm 18 which is connected to a hollow shaft46 whereon is rotatably'mounted an ink-roller 45. Passing through a suitable slot'in the-frame 1 is a bar 53 which is provided with a slot 53 wherein engages one edge of the member d8. This member "53 is actuated to move throughthe slot in one direction by means of, a 'cam 55 which is mountedon ashaft 56; 'secured'in suitable bearings 56 and 56 ymounted on the frame ,1. ()n this shaft 56 isa beveled gear 57 whichmeshes with a similar beveled gear 5S keyed upon the shaft 4. In order to hold the member 53 constantly against the cam 5 there is provided a-spring 5.4 which isattached at one end to a lug 53 dependent from the member 53 and at its otherend passes through an-opening'inthe frame 1.

The shaft-35 extends from sideto Pivoted on" the shaft '63 are members or links 49 and 50'which carry a shaft 52 and this shaft passes through thehollow shaft 46. Now by means of this arrangement as the shaft 4 rotates, the shaft 56 will be rotated and this will move the member 53. As the member 53 moves in and out it carries with it theink roller 45 which is thus caused to oscillate across the, face of the roll 68. Integral with the link 49 is a lug 64 which serves as an abutment for an ad]usting screw 65 carried by one arm of a lever 66 which is pivoted on the shaft 63. The other arm of this lever 66 terminates in a cam surface 66 which is adapted to contact with a cam 70 slidably mounted on the member 32. By means of the proper adjustment of this cam 70 the time of contact between the inking roll and the plate 24 may be adjusted and by means of the screw 65 the degree of pressuremay be adjustedin like manner. Upon the shaft 63 is a rock arm 63 to the end of which is attached a spring 67, the other end of said spring being secured to a suitable lug on the frame 2. By means of this construction the roller 45 is normally kept in engagement with a roller 68 which is mounted on a shaft 72 whereto is keyed a crank handle 73. This shaft 72 is carried in suitable brackets 74 and 75 which are mounted on a cross bar 76 extending between the frame members. This cross bar 76 is pivoted at one end to the frame 1 by means of a bolt 77 while at its other end there is provided a slot 7 6 adapted to engage the shank of a thumb screw 80. By this means the cross bar with the collar 68 and attached parts may be swung out of engagement with the roller 45 when desired. Upon the shaft 72 is a beveled gear 60 which meshes with a beveled gear 59 fixed upon the shaft 56. Thus when the shaft 4 is rotated the shaft 72 will likewise be rotated through the medium of the beveled gears 59 and 60. Extending rearwardly and upwardly from the brackets 74 and 75 are slides 7 and 7 5.

At.71 is indicated a reservoir having a suitable opening in one side for the reception of the roller 68. On the ends of the ink reservoir 71 are lugs 71 which are threaded for the reception of screws 71, the ends of which bear against the shoulders formed between the bracket 74 and the extension 74. By this means the position of the ink reservoir may be adjusted with reference to the roller 68. Attached to a shaft 71 within the reservoir is a roller 81 which assists in feeding the ink forward toward the roller 68, the shaft 71 being journaled in the sides of the reservoir 71. On the shaft 72 is fixed a gear 72 and on the shaft 71 is a gear 71 meshing with the gear 7 2.

. Carried by the frame members 1 and 2 is a shaft 82* whereto are keyed or otherwise fixedly secured links 82*. Connecting the free ends'of these links is a shaft 82.which 82, the point of which bears against the lug 82 so that thevrelative positions of the lever and links 82 may be regulated. The other arm of said lever terminates in a cam 83 which lies in the path of the cam 32 previously described-so that as the carrier rotates the pad 82 is brought into contact with the recently inked surface of the plate 24, and forces the ink into the engraved lines of the plate, and wipes ed the greater part of the surplus ink. For the purpose of holding the pad 82in its normal position there is provided on the shaft 82 a rock arm 82 whereto is secured one end of a spring 82 the other end being secured to a suitable lug on the frame 2. Below the shaft 82 is a shaft 87 whereon is mounted a hanger 85 having a shaft 86 journaled in its free ends. On the shaft 86 is mounted an ink wiping roller 84. On the shaft 87 are mounted gears 88 and 89, the latter of which is driven by a gear 91 keyed upon the main shaft 4. The gear 88 meshes with the gear 90 on the shaft 86 which causes the roller 84 torotate in a direction opposite the movement of the plate and by reason of the relative proportions of the gears this roller 84 will travel at a greater peripheral speed than will the plate.

For the purpose of removing the ink from the roller 84 a scraper 96 is mounted on the frame 85 and is held in adjusted position by means of thumb screws 99*. Theroller 84 normally lies out of contact with the plate and out of the path of movement of said plate, but on the shaft 87 is pivotally mount ed a lever 92 having a cam end 92 which cam end is brought into contact with a cam 94 adjustably mounted on the carrier 3 by means of a set screw 94. The other arm of the lever 92 carries an adjusting screw 93 which bears against a lug 85 on the-memv ber 85 and this regulates the degree of pressure between the wiping roller 84 and the plate 24. This roller is continuously run while the plate is in motion whether in contact with the plate or not, and by reason of plate is left in of the links 97 is alug 97 and on the shaft v 97 is pivoted a lever 98 one arm of which is provided with a set screw 97, the point of which bears against the lug 97 so that the linksmay beswung in or outwith relation to-the lever 98. The end of-the lever 98 is provided :with a cam surface98 which normally bears against the ring 95 during the greater part of itsrevolution. However, as

the carrier-3 is revolved, "this lever 98 will contact withthe cam 94 and rise on-the-camthus forcing the roller97 into contact with which meshes with the gear 91. On the shaft 97 is also a gear 975 which meshes with a gear 97 onthe shaft 97. Thus the roller is caused to rotate rapidly in a direc tion opposite the movement of the plate for the purpose of giving said plate the final machine polishing. This roller 97 is preferably provided with whiting and water in order that the polishing-may be completed so far as possible'by mechanical'means. In order to supply the whiting and water there is provided a shaft 100 whereonis held-a roller100. Swinging from the shaft 100 is a tank 101, into whichlthe lower portion ofg'the-roller 100-dips; The segment 95 only ext-ends about two-thirds ofthe way around the polishing roller 97 a scraper 99 is see cured tothe pendent ends of .the frame 97 by means of set screws 99.

On the shaft l'is looselymounted a belt pulley 106 which is driven by a belt'105. This belt pulley 106 is provided with a hub thereon to which is secured a boss 106 having a recesslOGF, the peripheral wall of which is provided with ratchet teeth 107.

()nthe shaft 4 is also loosely mounted a member 108 whichis provided with a recess 108 wherein rests a pawl 109 which is normally held out of engagement with the ratchet teeth 107 by means of a stop 112, which is held beneath this pawl, as shown infull lines in Fig. 6, and is normally kept in this position by means'of a spring 112 oneend' of which bears beneath an arm, 110 which projects-from the stop 112 whilethe otherend rests upon a lug'112 which projects from'the bracket 6. 'Attached to the arm ll0 is'ja cord or wire 111 which may be connected to any desired foot lever or treadle or a hand grip may be used foroperating' the member 110. This mechanism is part of the mechanism used for'the purpose of stoppingithe'machine at a lore-determined point: for the hand polishing operation opposite tothemember 108 wherein is located the pawlf This member 108 is provided with a segmental slot orrecess 115. s The wheel 91is keyed securely to theshaft and on this wheel there is provided a projection 116.

This projection is of such dimension that a certain amount of play is allowed in the recess.

The release scribed. 4

The wheel 91 is provided with space guides 91 between whichthe block 117 havmechanism .will now be-deing a cam surface 119 is slidably mounted,

the block being held within the guides by flanges 117 formed thereon while a plate 117? is secured to the block by means of screws 117 and overlaps the guides 91, this construction being clearly shown in Fig. 10. Projecting from the-block 117 are pins 117 and springs 118 are provided,each having an end attached to one of these pins while the remaining ends of the springs are secured to pins 91 fixed to the wheel adjacent its rim. The block 117 is thus constantly urged outward. Straddling the rim of the wheel is a forked end 120 of a bolt 1.20 which is slidable in a carrier 120 secured to the frame of the machine. This carrier is provided with oppositely disposed slot-s 120 and through thebolt passes a pin 120 the ends of which lie in the slots 120 so that the pins act as a stop to limit the movement of the bolt. The carrier is furthermore provided with athreaded sleeve 120 wherein is engaged ascrew 122 by means of which the movement of the bolt may be regulated.

The bolt is constantly urged in the direction of-the center of the wheel by means'of a sequence will be permitted to pass the projection'120. Then the machine is to be rotated the member 108 is thrown into operative operation with the pulley 106 as explained thus rotating the segment and allowing the spring 121, which is stronger than the springs 118,to force the lug 113 into the segmental recess 115. As this takes place the end of the segmental recess115 engages the lug 116 on the wheel, thus rotating the same. a

At 132 there is provided a rotatable card receiver so positioned asto receive the cards after they pass between the printing plate and pressure roller 27. This card receiver is actuated-byme'ans ofa cam 136 carried upon the shaft 4, saidcam .engagingithe lever 135 which is connected to an arm 132 on the card receiver by means of a link 133. The

card receiver is restored to its normal position by meansof a spring 140 which is connected to an arm on the card receiver and has its lower end connected to a partof the mechanism.

The action of this device is as follows: The cards are placed on the feed table 25, lever 41 is thrown into the uppermost position causingthe pin 36 to engage the cam 40, thereby throwing up the lever 26 and causing it to engage the card feeding mechanism. The segment 32 is attached to the shaft 35 which'is operated from the pin 36 and the segment is thrown outward at the same time as the lever 26, causing it to engage the segment 29 gripping the card between the roller 27 and printing plate 24 as the motion is continued the impression is made on the .card which emerges from between the surfaces and is deposited in 132 as heretofore described. As the plate carrier swings around the cam 70 engages the arm 66 causing the ink roller to be brought into contact with the printing plate 24 there by depositing a supply of ink thereon. When the cam 70 passes the arm 66 the roller 45 drops into contact with the ink roller 68, whichis continuously revolved by the gearing 59, at the same time the roller 45 is given a longitudinal motion by means of the cam 55, thus evenly'distributing a fresh supply of ink over its surface. Next, the same cam 70 engages the arm 83 bringing the pad 82 into contact with the plate holding it against the same with considerable pressure. This pad is somewhat elastic and as the'plate slides under it the ink is to a considerable degree gathered up and forcibly rubbed into the lines. Next, the cam 94 strikes the arm 92, causing the roller 84 to engage the printing plate removing the major portion of the ink from the same. The roller 84 revolves at a speed double that of the printing plate and in the same direcstationary tion. A scraper 96 is arranged to make contact with the roller, 84 removing ink from the same. This arrangement has the merit of saving the ink by enabling it tobe returned to the ink fountain 71, thereby mate rially reducing the cost of operation. In my previous Patent No. 810,743 as well as other systems using the web wiping method" this major portion of the ink is wasted. This wiping process leaves the plate only partially cleaned, and a further operation is performed based on the well known practice of using whiting for the purpose of drying or hardening the ink for the polishing process. As is well known in the art the mechanical application of whiting for the polishing of the plate is diflicult, owing to the fact that it is hard to control the amount used. The smallest particle of the dry whiting in the lines of the engraved plate is suflicient to prevent it from printing, and my invention provides means by which this may be accomplished in a satisfactory manner. In practice I find that by adding water or other liquid medium to the whiting before applying it to the wiping roller better results are obtained inasmuch as all dry and gritty particles are more completely removed by the scrapers. The manner in which this polishing operation is effected is as follows: The cam 94 strikes the arm 98, throwing the roller 97 into contact with the printing plate. As this roller also revolves at twice the speed and in the same direction to the printing plate, the plate is subjected to a polishing action which removes any ink that may remain on the plate. This ink mixed with the whiting is in turn removed from the roller by means of the scraper 99. The diameter of the roller 97 is such that one revolution of the same takes place while the plate is passing over it. Whenthe cam 94 passes the arm 98 the roller 97 drops on the whiting roller 100, thereby picking up a fresh supply of whiting. These rollers are in cont-act during an interval suflicient to coat the entire circumference of the roller 97 when the arm 98 is picked up by the segment 95, thereby raising the roller 97 to a position midway between the roller 100 and the line of the printing plate. During the remainder of the revolution of the plate carrier 97 continues to revolve so that by the time it is again presented to the plate 24 the film of whiting has become dry. As there are many and varying conditions this process does not always leave the plate absolutely clean, therefore it becomes necessary for the plate to stop and to assume such a position as will enable the operator to have full control over the same, givin the final polishing byhand as in the regu ar manual presses. To effect this the carrier 3'continues to revolvefuntil the pin 14 engages the cam 16 pushing out the plateholder 7 to a position convenient for such operation. At this point the press stops, if the clutchhas been released at any point during the previous revolut on, otherwise the carrler contlnues to revolve the plate holder drops back and a new card isfe The card feed mechanism is the same as original case No. 810,743, no improvements or claims made, however the front elevation in Fig. 14 shows this more in detail. The cards are placed one at a time, in front of lug 200 which projects through a slot 201 in the plate 206. As the frame 3 revolves 26 strikes the pro ecting lug 202 which is attached to the sliding piece 205, which in turn carries lug 200. The latter is pushed forward feeding the card between the plate 24 and pressure roller 27. When 26 leaves contact with 202, the spring 203 restores the unit to its normal position.

Having thus described the invention, what is claimed as new, is

1. In a press of the character described, a frame, a shaft journaled in said frame, a

rotary plate carrier fixedvnpon said shaft, a pulley loosely mounted on said shaft,'clutch means for engaging said pulley and shaft, a stop for said plate carrier, means to adjust the 'position of said stop whereby said carrier is stopped in a predetermined position,

a release mechanism for saidstop connected to said clutch means, and a card delivery :mechanism adjacent the path of said plate carrier',.and a presser roller operable by the movement of said plate carrier to bear against said plate carrier.

2. In a press of the character described, a frame, a shaft jo-urnaled in said frame, a

- rotary plate carrier fixed upon said shaft,

and shaft, said gearing including a second shaft. i

3. In a press of the character described, aframe, a shaft vjournaled in said frame, a rotary plate carrier fiXed-uponsaid shaft, a pulley loosely mounted on said shaft, clutch means for engaging said pulley and shaft, a stop forsaid plate carrier, means to adjust a the position of'said stop whereby said carrier is stopped in a predetermined position, a release mechanism for said stop connected to said clutch means, a card" delivery mecha nism adjacent the path of said plate carrier,

7 a presser roller operable by themovement of said plate carrier to bearagainst said plate carrier, inking mechanism adj acent 't he'path of said plate carrier, gearing connecting sald *inkingmechanism and shaft, said gearing including a second shaft, and cam means on said plate carrier for throwing the inking V mechanism into operative relation with the plate carrier.

7 '4. In a press of the character described,

a frame, a shaft .journaled in said frame, a rotary plate carrier fixed upon said shaft, a pulley loosely mounted on said shaft,

clutch means for engaging said pulley and shaft, a stop for said plate carrier, means to adjust the position of said stop whereby said carrier is stopped in a predetermined position, a release mechanismffor said stop connected to said clutch means, a card delivery mechanismadjacent the path of said plate carrier, a presser roller operable by the movement of said plate carrier to bear H against said plate carrier, inking mechanism adjacent the path of said plate carrier, gearing connecting said inking mechanism and shaft, said gearing including asecond shaft, cam means on said shaft to oscillate 1 a portion of said inking mechanism, cam means on sald plate carrier for throwing the inkmgmechamsrn in operative relation wlth the plate carrier, a cleaning pad beneath said inking mechanism, a cleaning roller be neath said pa d, a polishing roller beneath said cleaning roller, gearing'operably connecting the cleaning and polishing rollers with said shaft,and cam means on said plate carrier for throwing the cleaning and polishing mechanisms into operative relation with saidplatecarrier.

. In'testimony whereof I aafix my signature in presence of two witnesses.

GEORGE ILGIHON. Witnesses: I

7 W. A. SrooK,

- 'F. P. SoHRoEDER.

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