US2994265A

US2994265A - Card printing machine

Info

Publication number: US2994265A
Application number: US801825A
Authority: US
Inventors: Douglas H Hurlbut; William F Goodrich
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-03-25
Filing date: 1959-03-25
Publication date: 1961-08-01
Anticipated expiration: 1978-08-01

Description

1951 D. H. HURLBUT ETAL 2,994,265

CARD PRINTING MACHINE Filed March 25, 1959 2 Sheets-Sheet 1 INYENTURQ l70zrsLAs H.HURLBUT.

WILLIAM 1 50017121011.

I l i 32 I 22 M 1951 D. H. HURLBUT ETAL ,994,265

CARD PRINTING MACHINE 2 Sheets-Sheet 2 Filed March 25, 1959 INVENTUR s JJUUELAS H.HURLBUT. WZ LLJAM Z? 50 017mm.

BY W

AT Y.

United States Patent 2,994,265 CARD PRINTING MACHINE Douglas H. Hurlbut and William F. Goodrich, both of Adrian, Mich. Filed Mar. 25, 1959, Ser. No. 801,825 8 Claims. (Cl. 101-269) This invention relates to card printing machines and more particularly to a machine of a character particularly adapted for use in printing show cards, signs, posters and the like.

This invention embraces the provision of a card printing machine embodying a manually movable carriage equipped with means for maintaining a selected pressure upon successive sheets of stock, cards or the like during printing operations in order to attain uniform type impression.

An object of the invention is the provision of means in corporated in a pressure carriage of a printing machine wherein the position of the pressure roll may be accurately regulated in accordance with the thickness of the stock to be printed in order to obtain uniform type impressions on successive sheets or stock.

Another object of the invention is the provision of a movable carriage arranged for traverse over a type-supporting platen or bed, the carriage incorporating an eccentrically mounted pressure roll in combination with manually operable means for locking the pressure roll in a selected position for exerting the proper roll pressure on the stock to be printed.

Another object of the invention resides in the provision of a pressure roll locking means which is manipulated by relative movement of a handle or grip member which is utilized for advancing the carriage supporting the roll over the stock to be printed.

Still another object of the invention is the provision of an indexible eccentric means providing an abutment for positioning a pressure roll, the indexing means being provided with suitable calibrations or graduations indicating various thicknesses of stock to be printed and the pressure roll positioned by the indexible means to provide the proper roll pressure in accordance with the thickness of the stock to be printed.

Further objects and advantages are within the scope of this invention such as relate to the arrangement, operation and function of the related elements of the structure, to various details of construction and to combinations of parts, elements per se, and to economies of manufacture and numerous other features as will be apparent from a consideration of the specification and drawing of a form of the invention, which may be preferred, in which:

FIGURE 1 is a perspective View of a card printing machine embodying the invention;

FIGURE 2 is an end view of the machine illustrated in FIGURE 1;

FIGURE 3 is a side elevational view of the carriage of the invention with a cover member enclosing a portion of the mechanism being shown in section;

FIGURE 4 is a top plan view of a portion of the carriage with certain parts illustrated in section;

FIGURE 5 is a sectional view taken substantially on the line 5-5 of FIGURE 4;

FIGURE 6 is a fragmentary detail view illustrating the position of certain components of the construction in effecting printing on comparatively thick multi-ply stock;

FIGURE 7 is a fragmentary detail sectional view taken substantially on the line 77 of FIGURE 2, and

FIGURE 8 is a detail sectional view of the card of stock retaining means.

Referring to the drawings in detail and initially to FIGURES 1 and 2, the printing apparatus or machine is inclusive of a type supporting bed or platen 10 of planar "ice character upon which types 12 may be positioned and held in printing position by any suitable means as by type retaining bars, pressure sensitive adhesive or magnetic means. It is to be understood that the types 12 may be arranged in any position on the bed 10. The type supporting portion of the bed 10 may be equipped with a removable resinous plastic sheet bearing type positioning lines as shown in FIGURE 1. A coating of bees wax may be applied to the type-engaging surface of the plastic sheet to minimize slippage of the type. The type supporting bed is mounted by channel-shaped side frame members 14 extending longitudinally of the bed 10 and secured thereto by suitable means.

As shown in FIGURE 1, the region between the longitudinally extending frame members 14 beneath the bed 10 may be utilized to accommodate type storage drawers 16. The side edge regions 18 of the bed 10 extend beyond the channel-shaped members 14 providing tracks or ways adapted to support a movable carriage 22. The carriage comprises a frame structure embodying plates or members 24 which are secured in spaced relation by a transverse extending bar 26 secured to the plates 24 by means of screws 27 or other suitable securing means.

Journaled upon stub shafts 28 carried by each of the plates 24 are flanged rollers 30, the rollers 30 being arranged in pairs, one pair being carried by each of the plates 24. The rollers 30 engage the edge regions of the bed 10 whereby the carriage is reciprocable lengthwise of the bed 10. Disposed beneath each of the rollers 30 is a roller 32 journally supported upon a shaft 34, the rollers 32 being disposed to engage lower surfaces of the pro jected edge regions 18 of the bed 10 in the manner shown in FIGURES 2 and 3 in order to prevent upward relative movement of the carriage 22. V

The shafts 34 upon which the rollers 32 are mounted have threaded portions accommodating securing nuts 35 whereby the rollers 32 are removably secured to the plates 24. It will be obvious that the groups of rollers 32 provide for unimpeded movement of the carriage 22 lengthwise of the type supporting bed 10 and prevent vertical displacement of the carriage relative to the bed.

Means is provided for removably retaining individual cards or sheets of stock in a position to be printed from types 12 disposed on the bed 10. Extending transversely of the bed 10 is a bar 38 secured in place by screws 39 at an end region of the apparatus as shown in FIGURES 2. and 8. The bar 38 is provided with ear portions 39 which accommodate journal pins or stub shafts 40. Disposed adjacent the bar 38 is a plate-like member 42 disposed coextensively with the bar 38 and having depending lugs 43 provided with openings to receive the pins 40 whereby the plate 42 is pivotally supported for movement relative to the bar 38.

Expansion coil springs 44 are arranged to exert a biasing force on the plate 42 for urging the plate in a clockwise direction about the axis of the pins 40. The upper surface 46 of bar 38 and a lower planar surface 48 of the pivoted plate 42 provide jaws or holding means for frictionally gripping a card or sheet of stock to be printed during a printing operation. The member 38 is formed 'with a raised portion 47 forming a stop means for positioning a card to be printed. A hand grip or handle member 49 extends from the plate 42 to facilitate manipulation of the plate. By pivotal movement of the plate 42 relative to the bar 38, successive sheets of stock or cards may be readily inserted for printing and quickly removed.

The carriage 22 is equipped with a pressure roll 55 journally supported by means adaptable for adjusting the position of the roll which engages the stock or card to be printed in order to provide a desired and uniform pressure eifective during printing operations so as to attain uniform type impressions on the cards or stock.

The pressure roll 55 preferably comprises a comparatively thick rubber sleeve or envelope 57 which is snugly fitted over a circular cylindrically-shaped bar or cylinder 58, the sleeve 57 being of a length to span the width of the type supporting area of the bed 10.

The pressure roll 55 is supported upon a relatively movable supplemental frame carried by the plates 24 of the carriage 22. Disposed adjacent each end of the pressure roll 55 is a plate or member 60. The plates 60 are fixedly joined together and held in spaced relation by means of a spacer member or bar 62 securely held to the plates 60 by means of screws 63. Each of the frame plates 24 is provided with a bore to accommodate a pintle or journal pin 64 carried by each of the plates 60 whereby the supplemental frame provided by the plates 60 and the bar 62 is mounted for pivotal movement about the axes of the journal pins 64.

As particularly shown in FIGURE 5, the axes of the journal pins 64 are spaced from the axis of the pressure roll 55 whereby movement of the plates 60 about the pins 64 effects vertical movement of the pressure roll 55 relative to the type supporting bed 10. The cylinder 58 supporting the rubber sleeve 57 is formed at its end regions with tenons 66 which are mounted in anti-friction ,or ball bearings 68 carried in suitable bores provided in the plates 60 whereby the pressure roll 55 is freely rotatable in the bearings 68.

The arrangement is inclusive of adjustable or indexible means for controlling or regulating the extent of pivotal movement of the plates 60 and hence the relative vertical position of the pressure roll 55 so as to accommodate cards or sheets of stock of ditferent thicknesses. Each of the frame plates 24 is provided with an opening to receive a shaft 70. Mounted upon the shaft 70 are abutment members 72 which, in the embodiment illustrated, are of cylindrical shape and are mounted eccentrically on the shaft 70 and secured thereto by set screws 74.

'One end of the shaft 70 extends exteriorly of one of the frame plates 24 and secured to the extending portion is a hub 76 of a crank arm 78 particularly shown in FIGURES 1, 3 and 7. The crank arm is secured to the shaft 70 by means of a set screw 77. A forwardly extending portion 80 of the crank arm is bored to accommodate an indexing member or pin 82, an abutment or collar 81 fixed on the pin and an expansive coil spring or resilient means 83.

The pin 82 is longitudinally slidable and for this purpose is provided with a finger grip or knob 84 having a bore which is threaded to be received upon a threaded portion 86 of the pin 82 extending beyond the portion 80 of the crank arm 78. Mounted upon the frontal face of the plate 24 adjacent the crank arm 78 is a circular disk-like member or plate 88 secured by any suitable means to the adjacent plate 24. I

The circular disk 88 is formed at its peripheral region with a plurality of recesses or openings 90, each opening being of a dimension to slidably accommodate the portion of the pin 82 which is normally biased to the position shown in FIGURE 7 under the influence of the spring 83.

The openings 90 in the member 88 are arranged in a circle, each opening being the same radial distance from the axis of the shaft 70 whereby each of the openings is adapted to selectively accommodate the pin 82 dependent upon the position of the crank arm 78. The pin 82 may be manipulated by means of the knob 84 to register the pin with any opening of the series. Each of the arms 60 is formed with an abutment surface 92 which is adapted to engage the peripheral surfaces of the eccentric members 72 mounted on the shaft 70.

Thus rotational adjustment of the crank arm 78 and shaft 70 changes the position of the eccentrics 72 on the shaft 70 so asto affect a change in the position of the arms 60 which are rotatable'about the axis of the stub shafts or pins 64. A relative change in the position of rotation of the arms 60 about the axis of the shaft 64 changes the vertical position of the pressure roll 55 with respect to the types 12 mountedupon the platen or bed plate 10.

Through this adjustment, the relative position of the pressure roll accommodates stock, designated S in FIG- URE 5, of various thicknesses so that a uniform pressure of the roll 55 may be maintained on each successive card or sheet of stock as it is being printed.

FIGURE 5 illustrates a position of the pressure roller 55 and the eccentrics 72 where a card or sheet of stock S of a double ply is to be printed. FIGURE 6 illus-' trates another adjustment or setting for the eccentrics 72 whereby a thicker card, for example, a four ply stock designated S may be printed.

As shown in FIGURE 3 the outer face of the frame plate 24 may be provided .with a chart 94 adjacent the disk-like member 88 provided with designations of different thicknesses of stock specified by the number of plies as, for example, a two ply or four ply card or sheet. Through the use of such chart, the operator is enabled to select the proper opening of the series of openings to receive the pin 82 which provides an adjusted position of the eccentric members 72 and pressure roll 55 for the stock of selected thickness.

The arrangement of the invention is provided with a manipulatable handle means movable to a position for locking the arms 60 in engagement with the eccentrics 72 in order to maintain the pressure roll 55 in the same relative position during each successive printing operation of a card or sheet. Each of the members 60 supports a friction locking or latching means engageable with a curved exterior surface 1000f each of the end plates 24, each of the curved surfaces being generated as a radius about the axes of the pins 64 upon which the arms 66 are .journaled for pivotal movement.

As the locking or latching means carried by each of the members 60 is of identical construction, a description of one will suffice for both. The distal end regions of each of the arms 60 is bored to accommodate the end regions of a shaft 104 which is journaled in the bores in the members 60 for rotational movement. As shown in FIGURE 4, the central region of the shaft 104 is formed with a portion .106 of enlarged diameter of a dimension to snugly receive a tubular member or sleeve 106 forming a manipulating handle for reciprocating the carriage construction and which, upon rotational movement effects a locking of the arms 60 in an adjusted position determined by the position of the eccentric members 72.

The sleeve or handle member 108 may be secured to the central enlarged region 106 of shaft .104.by suitable means (not shown) as for example a set screw. Surrounding each of the portions of the shaft104adjacent an end of the central enlarged section 106 is a .coilspring 110 having one end 111 anchored in :the adjacent .arm 60, and the other end anchored to a pin 112.carried by the shaft 104, one of the springs being shown in FIGURE 4.

Each of the arms 60 is provided with a pinor stub shaft '114 which may be pressed into a suitable bore formed in the member 60. Pivotally supported upon each of the pins 114 is a latching or locking shoeor member 116. Each of the members 116 isprovided with a slot 118 into which projects a portion 1200f a member 122. The portion .120 and the bifurcated lportions defining the slot 118 of member 116 are formed with registering openings to accommodate a pin 124 which is pressed into and snugly received by the openings in the member 116.

The tenon portion of member 122 is threaded and'is received 'in a threaded bore "formed in .arnembe'r or connector 126. 'Each member 126 is provided with a bore adapted to receive a pin128 projecting from each end of the shaft 104, one of such constructions being illus trated in detail in FIGURE 4. The pins 128 projecting from the shaft 104 are disposed laterally at a distance from the axis of shaft 104 so that upon rotation of the shaft 104 by manipulation of the handle or sleeve 108, the shaft is rotated and the eccentrically disposed pins 128 effect relative movement of the connectors 126 and members 122 causing oscillation or pivotal movement of the looking or latching members 116 journally supported upon the pins 114.

Each of the members 116 is provided with a locking or friction clutch surface 130 which, upon rotation of the hand grip or sleeve 108 and shaft 104, engages the surface 130 of each shoe 116 with the curved surface 100 formed on each of the frame plates 24. Through this means the arms 60 and the pressure roller 55 are held in relatively fixed positions during longitudinal movement of the carriage in effecting a printing operation.

The springs 110 exert a biasing force on the shaft 104 and the components connected therewith in a direction to normally hold or maintain the latching or clutch members 116 out of engagement with the curved surfaces 100 of the plates 24. Members 122 are threaded into the connectors 126 whereby through relative rotation of a member 126 with respect to its adjacent member 122, the positions of the locking or latching members 116 may be adjusted so that each member 116 effectively engages the curved surface 100 of the adjacent plate 24 during rotational movement of the handle 108 toward locking position.

The adjustment may be affected by removing the members 116 and the connectors 126 from the

pins

114 and 128 respectively. One of the arms 60 is provided with an abutment or stop pin '134 to limit the upward movement of one of the members 116 and, through the medium of the shaft 104 and the associated components, also limits the upward movement of the other latching member 116. The

members

116, 122 and 126 of each locking or latching assembly is enclosed in a sheet metal closure or cap 136 secured to each of the arms 60 by means of screws 138.

The central region 109 of the handle or sleeve 108 may be knurled as shown in FIGURE 2 to provide a roughened hand grip portion. It is to be understood that the handle member 108 may be of a diameter or size to provide a convenient hand grip portion for manipulating the carriage longitudinally of the printing bed and for actuating the latch or locking means 116.

The operation of the arrangement as illustrated in the drawings is as follows: With the movable carriage preferably disposed at the left-hand end of the printing bed 10 as shown in FIGURE 1, the operator withdraws the knob 84 outwardly of the crank arm 78 to withdraw the pin '82 from engagement with an opening in the group of openings 90. The operator then rotates the crank arm 78 and shaft 70' to a position with the pin 82 in registration with an opening 90 of the group of openings corresponding to the ply or thickness of the card or stock as indicated on the chart 94, on which printing operations are to be performed. 1 The operator then releases the knob 84 and the spring 83 moves the pin 82 into the selected opening to maintain the eccentric member 72 in the selected position. The handle member 108 is moved to the broken line position illustrated in FIGURE 1 which movement rotates the arms 60 about the axes of the pins 64 to elevate the pressure roll 55 to its uppermost position. With the pressure roll 55 thus elevated a substantial distance above the types 12, the end region of a card or sheet of the stock may be inserted beneath the roll 55 from the right end of the machine, and the end of the card to be printed is abutted against the stop member 47 and the card clipped between the

jaws

46 and 48 of the stock positioning means.

Downward pressure on the handle 49 rocks the member 42 about the axis of shaft 43 separatingthejaws 46 and 48 to receive the card or stock. The spring 44 biases the jaw or member 42 toward the jaw 46 to frictionally hold the stock in a position for printing. When no rotative force is exerted upon the handle or sleeve 108, the locking members or shoes 116, under the influence of the biasing springs 110, are held out of engagement with the curved surfaces of the plates 24.

After the card or sheet of stock is positioned by the retaining

jaws

46 and 48, the operator grasps the handle 108 and swings the handle and arms 60 in a clockwise direction as viewed in FIGURES 1 and 5, until the surfaces 92 of the arms 60 engage the periphery of each of the eccentric members 72, the eccentric members thereby positioning the roll 55 with respect to the card or stock. The pressure roll is then in a position to exert the required downward pressure upon the card to effect printing.

With the arms, 60 in such position, the operator rotates the hand grip or sleeve 108 relative to the arms 60, which, through the medium of the connectors 26 and the members 122, rotates each of the latching members or clutch shoes 116 about the pins or shafts 114 to bring the friction or clutch surface 130 of each shoe into engagement with the adjacent curved surface 100 of the plate 24. This action of bringing the members ,1116 into frictional latching or locking engagement with the plates 24 locks the arms 60 in a fixed position to maintain the pressure roll 55 in proper contact with the card or sheet of stock to be printed.

The operator then moves [the carriage through his grasp of the hand grip 108 in a right-hand direction as viewed in FIGURE 1 lengthwise of the printing bed 10. During movement of the carriage, the pressure roll 55 rotates over the reverse side of the stock S and exerts suflicient downward pressure upon the card or stock to cause impression of the types which have been properly inked on the obverse side of the. card. When the carriage has been moved the full length of the printing bed to effect a printing operation, the operator releases his grasp upon the handle or sleeve 108 and under the influence of the springs 110 the locking members "116 are automatically moved out of frictional or locking en gagement with the plates 24. The operator then swings the arms 60 in a counterclockwise direction as viewed in FIGURES 1 and 5 about the axes of the shafts 64, which movement elevates the pressure roll 55 to a position above and out of contact with the printed card and the carriage then moved in the reverse or retracted direction toward the left-hand end of the bed 10 as viewed in FIGURE 1.

The handle 49 of the stock gripping means may then be depressed and the printed card removed from the

jaws

46 and 48 of the stock retaining means. This operation is repeated for each sheet to be printed.

Through the arrangement of the invention, the effective pressure to be exerted by the pressure roll 55 may be adjusted for each thickness of card to be printed and, through the locking arrangement for the pressure roll 55, a uniform pressure is exerted upon each card of preselected thickness on which a printing operation is to be performed. It is also apparent that the apparatus may be readily adjusted for cards or stock of different thicknesses simply by manipulation of the knob 84 and the crank arm 78 to change the positions of the abutments or eccentric members 72 which, in turn, determines the relative position of the roll 55. The types 12 on the printing bed 10 are inked by means of a hand roller in the conventional manner between each printing operation.

It is apparent that, within the scope of the invention, modifications and different arrangements may be made other than as herein disclosed, and the present disclosure is illustrative merely, the invention comprehending all variations thereof.

We claim:

1. Apparatus of the character disclosed, in combination, a bed adapted to support printing type, a carriage movable longitudinally of the bed, means disposed at an end region of the bed to removably secure a sheet to be printed, a frame structure pivotally mounted on said carriage, a pressure roll rotatably journaled on said frame structure, a relatively movable abutment supported by said carriage adapted to limit the pivotal movement of said frame structure in one direction, means for adjusting the relative position of said abutment, a relatively movable hand grip member carried by said frame structure, friction shoes movably supported on said frame and operable by relative movement of the hand grip member into engagement with the carriage for locking said frame structure against movement relative to said carriage, and means normally biasing said friction shoes out of engagement with the carriage.

2. In a card printing machine, a printing bed, a carriage movable longitudinally of said bed, a card clamp mounted at one end of the printing bed, a pressure roll, a frame pivotally mounted on said carriage, said pressure roll being journaled on said frame, the pivotal axis of said frame being spaced from the axis of said pressure roll whereby pivotal movement of said frame changes the vertical position of the pressure roll with respect to the printing bed, a handle movably supported on said frame, cam means mounted on said carriage, means for adjusting said cam means to selected positions, said cam means being arranged to be engaged by the frame to determine the position of the pressure roll,

a locking shoe supported on each end of said frame and engageable with the carriage to prevent vertical displacement of the pressure roll during a printing operation, and means connecting said locking shoes with said handle whereby rotative movement of the handle actuates said locking shoes to frame locking position.

3. In a card printing machine, a printing bed, a carriage movable longitudinally of said bed, a card clamp mounted at one end of the printing bed, a pressure roll, a frame pivotally mounted on said carriage, said pressure roll being journaled on said frame, the pivotal axis of said frame being spaced from the axis of said pressure roll whereby pivotal movement of said frame changes the vertical position of the pressure roll with respect to the printing bed, a handle rotatably supported on said frame, a shaft journaled on said carriage, cam means mounted on said shaft, means for indexing said shaft to selected positions to vary the position of said cam means, said cam means adapted to be engaged by said frame for determining the position of the pressure roll, locking shoes associated with said frame and engageable with the carriage to prevent vertical displacement of the pressure roll during a printing operation, means connecting said locking shoes with said handle whereby rotative movement of the handle actuates said locking shoes to locking position, and resilient means arranged to normally bias said locking shoes out of engagement with the carriage.

4. In a card printing machine, a printing bed, a carriage movable longitudinally of said bed, a card clamp mounted at one end of the printing bed, a pressure roll, a frame pivotally mounted on said carriage, said pressure roll being journaled on said frame, the pivotal axis of said frame being spaced from the axis of said pressure roll whereby pivotal movement of said frame changes the vertical position of the pressure roll with re spect to the printing bed, a shaft journaled on said frame, a handle supported on said shaft for rotating the shaft, a second shaft journaled on said carriage, cam means mounted on said second shaft, means for indexing said second shaft to selected positions to vary the position of said cam means, said cam means adapted to be engaged by said frame for determining the position of the pressure roll, locking shoes associated with said frame and engageable with the carriage to prevent vertical displacement of the pressure roll during a printing operation, means connecting said locking shoes with said first mentioned shaft at regions spaced from the axis of rotation thereof whereby rotative movement of the handle controls the position of said locking shoes.

5. In a card printing machine, a printing bed, a carriage movable longitudinally of said bed, a card clamp mounted at one end of the printing bed, said carriage including spaced side plates, connecting means joined to the side plates, a frame comprising a pair of arms, a member securing said arms in spaced relation, said arms being pivotally mounted on said side plates, a pressure roll journaled on said frame on an axis spaced from the pivotal axis of said arms, a hand grip member rotatably supported by said arms, a shaft journaled by said side plates, eccentric members mounted on said shaft, means for rotating the said shaft to vary the position of the eccentric members, said eccentric members arranged to be engaged by said arms to determine the position of the pressure roll in accordance with the thickness of the card to be printed, and locking means on said frame engageable with the carriage and operable by said hand grip member for maintaining said arms in engagement with said eccentric members during printing operations.

6. In a card printing machine, a printing bed, a carriage movable longitudinally of said bed, a card clamp mounted at one end of the printing bed, said carriage including spaced side plates and a bar joined with said plates, a frame comprising a pair of arms, a member securing said arms in spaced relation, said arms being pivotally mounted on said side plates, a pressure roll journaled on said frame on an axis spaced from the pivotal axis of said arms, a first shaft journally supported on said arms, a hand grip element carried by said first shaft, a second shaft journaled by said side plates, eccentrics mounted on said second shaft, a crank on said second shaft movable to selected positions to change the positions of said eccentrics, an indexing pin carried by said crank cooperating with means for maintaining said crank in selected positions, said eccentrics arranged to be engaged by said arms to determine the position of the pressure roll in accordance with the thickness of the card to be printed, locking shoes arranged to engage the side plates for locking the arms of the frame in engagement with the eccentrics, means connecting the locking shoes with the first shaft whereby rotation of the first shaft aotuates the locking shoes.

7. In a card printing machine, a printing bed, a carriage movable longitudinally of said bed, a card clamp mounted at one end of the printing bed, said carriage including spaced side plates and a bar secured to said plates, a frame comprising a pair of arms, a member securing said arms in spaced relation, said arms being pivotally mounted on said side plates, a pressure roll journaled on said frame on an axis spaced from the pivotal axis of said arms, a hand grip element journally supported by said arms, a shaft journaled by said side plates, eccentrics mounted on said shaft, a crank on said shaft, means mounted on one of said side plates provided with a plurality of openings, an indexing pin carried by said crank for selective engagement in said openings for adjusting the position of said eccentrics, said eccentrics arranged to be engaged by said arms to determine the position of the pressure roll in accordance with the thickness of the card to be printed, locking shoes movably mounted on said arms and arranged to frictionally engage the side plates for locking said frame with the arms in engagement with the eccentrics, means connecting the locking shoes with the hand grip element whereby rotation of the element actuates the locking shoes, and spring means for normally biasing the hand grip element in one direction of rotation.

riage movable longitudinally of said bed, a card clamp mounted at one end of the printing bed, said carriage including spaced side plates and a bar joining said plates, a frame comprising a pair of arms, a member securing said arms in spaced relation, said arms being pivotally mounted on said side plates, a pressure roll journaled on said frame on an axis spaced from the pivotal axis of said arms, a first shaft journally supported on said arms, a hand grip sleeve carried by said first shaft, a second shaft journaled by said side plates, eccentric members mounted on said second shaft, a crank on said second shaft, means mounted on one of said side plates provided with a plurality of openings, an indexing pin carried by said crank for selective engagement in said openings for adjusting the position of said eccentrics, said eccentrics arranged to be engaged by said arms to determine the position of the pressure roll in accordance with the thickness of the card to be printed, locking shoes pivotally mounted on said arms and arranged to frictionally engage the side plates for locking said frame with the arms in engagement With the eccentrics, means connecting the locking shoes with the first shaft whereby rotation of the first shaft actuates the locking shoes, and spring means associated with said first shaft for normally biasing said shoes toward frame releasing position.

References Cited in the file of this patent UNITED STATES FATENTS 1,523,736 Wagner Jan. 20, 1925 2,818,072 Lamb et al. Oct. 22, 1935 2,034,584 Lamb Mar. 17, 1936 2,057,843 Oliver Oct, 26, 1936 2,068,707 R-eardon Jan. 26, 1937