US1966417A - Stenciling attachment for platen presses - Google Patents

Description

July 10, 1934. H, w. PARMELE 1,966,417

STENCILING' ATTACHMENT FOR PLATEN PRESSES Filed May 51, 1932 a Sheets-Sheet 1 July 10, 1934. H. w. PARMELE 1,966,417

STENCILING ATTACHMENT FOR PLATEN PRESSES Filed May 31, 1932 3 Sheets-Sheet 2 I fiV/Z/W Ema rd fl f arzzzele 6,- My. Q2 4 July 10, 1934. H. w. PARMELE 1,956,417

STENCILING ATTACHMENT FOR PLATEN PRESSES Filed May 31, 1952. 3 Sheets-Sheet 3 jffwaard W Z GIWZ eZe Patented July 10, 1934 ;UN-I T-E. D STATES PATENT o-FFicETT STENCILING'ATTACHMENT FOR PLATEN H Y A v. DRESSES I: iloward'wr Parmel e, Chi cago, lll.', assignor to, V Na z-Dar 1 Company, Chicago; 111., a corporation oflllin'ois 1 7 A plication May'31, 1932;.lser-iaiNo..;614,487 10 mm; (ci io i i) This invention relates t'o theart of steneiling "Fig. 3 is'a;ti'ansverse vertical section through designs in one or more colors on sheet material, the bed of the press taken on line 33 of Flg ;2', suchas'cardboard, or thelike, and the objectis the view also showing the position assumed by to provide mechanism'which may bere'adily ap the 'platenwhen the press is in open position;

plied tothe ordinary platenpress to" render the Fig. 4 is a view' similar to'Fig."-3, showing the 6 latt adaptable rv pai t g Work; 3 position of the parts in' the closed position of In stenciling designs on sheet" material it is the-press; and I v the usual practice to wipeabatch of paint'over a Figs-5 is a section through the bed taken on: stencil or screen, portions of which have been line 5 5 Of F preliminarily treated to render them penetrable. The general construction of a platen press of The paint is moved over the stencil by means of a the Gordon type s W l d r d in e t, squeegee which is held in pressure-contact with nd'th r f re th press p p will only be 01 the stencil during the wiping stroke. Until comscribed insufficient detail'to enable an under paratively recently work of this class was done standing of the manner in which'the novel -sten- 'by' machines which depended largely upon hand eiling atta ppl d theretooperation. Recently there have been-developed Referring to 1, the p e frame is indimachines which do the work, for the most part, cated gene a ly y the numeral send the p automatically. However, the automatic machines Which iS Pivotaliy ppq e the upper-front are necessarily of :costly construction, because of p i O t frame is indicated t A d the. large amount of mechanism required for table 0 Supported en the frame 3 e e- 75 effecting vautomaticoperation of the printing 3 in hem of the p The -wh hi frame, thesqueegeaand the? sheet feed mecha (heated r yy the numeral 11, is pi y nism.. i i connected'at 12 to the base portion of the-frame I have. found that the-ordinary platen press, about which it E e d' from gp which is in common use in practically all jobtion' against the Platemv n inking roller frame printing establishments-may be readily adapted 13 is Pivotally Supported O the bed y a Shaft for use inepaint process work. "In the regular 14,-'said ameb s'p ov i c da c w th; operation-of a platen press, such as the Gordon the usual Const uetien Wi h -Supp t g press, -the printing is what may be termed a conerm'sil5 w in the'regliiar eperatien Of tact printing, that is, the press remains in closed p ess-p ry the inking ,rOllerS p y Over the position only for an instant, since all portions of bed of typ n Onto an linking table The the bed of type strike the sheet simultaneously bed swung t0 and from Closed DOSitiOHhY In'order to adapt sucha press to the stenciling r ds 1'7, which are d p d v0n e of designs-by the use of a squeegee and a'stenc'il ODDOS' t SideS'Of the D Reds are e 5 screen it is-necessary to provide means whereby trieaily et d t One end W t S a t the press may be maintained'in closed position through stub'shafts 18, which project from the a sufficient length of time to allow the squeegee opposite ends of said shaft 14, the other ends of tobe moved over the stencil. Also it is necessaid connecting rods 17 being connected to crank sary to change somewhat the motion of theinking discs 19 by means of pins 21, whichar'eeccentriroller frameof-the press .inorder to make it' cally mounted on discs-19. Pins 21 have yield 95 adaptable for operation of the squeegee; c ing connectionwith rods 17, the ends-of said rods The meansprovided inaccordance'with my in-' bein'g'provided with rectangular openings 22 in vention for modifying the-standard-formofplaten' which are slidably -mounted bearing blocks; 23; press inthe aforementioned.mannerwill befully the latter" being journaled on pins 21- and being understood from thefollowing detailed descrip-I engaged at their opposite ends by coil springs 24' 1 tion, which, taken in connection with the accomand-25, which are housed in cavities formed inf panying drawingadiscloses aspreferred embodirods 'I-7,'said springsbeing arranged to bear at ment thereof. Y 1 e their freeends "against the ends of blocks 23.

Referring to thedrawingsz-r The reason for providing a yielding connection 5 Fig. 1 is a side elevational View of a platen press between rods'l'l' and crank discs 19 will be here- 1 5 of the Gordon type, to which the novelstenciling' inafter explained. Crank discs 19 are mounted attachment hasbeen applied; a on .a shaft 26,-the latter being driven in the usual Fig. '2 is afront elevationalview of thestencil manner from a main drive shaft 27 which is pro: supporting frame and paint feed mechanism, the vide'd with a spur gear.23; having driving engage-' 'viewbeing taken on line 22 of Fi 1; ment with .a spurlwheel29 carried onshaft 26. 11'!) A fiy-wheel 31 is mounted on one end of the main drive shaft 27 to provide for smooth and uniform movement of the bed and platen.

The platen 9 is rocked about its supporting shaft 32 (Fig. 3) in timed relation with the movements of bed 11. However, the mechanism for rocking the platen is not shown, since it is well known in the art. The usual frisket frame 33 is pivotally connected at 34 to the platen. This frame is provided with a pair of gripper arms-35 for engaging the opposite edges of the sheet, and is also provided at its lower edge with a cam roller 37 which is journaled on a pin 36 carried by said frame 33. A cam piece 33, rigidly supported on the main press frame 8, engages roller 37 to control the movement of the frisket frame to and from closed position against the platen in timed relation with the opening and closing movements of the press.

The usual emergency adjustment is provided for preventing contact of the bed with the platen. This mechanism, which is shown in Figs. 1 and 2', comprises: a link 39 which is pivotally connected at 41 to an arm 42, the latter being rigid on stub shaft 18; a hand operated lever 43 fulcrumed at 44 to the frame; and a series of intermediate connecting links 45, 46, 47, 48 and 49 interposed between lever 43 and the lower end of link 39. It will be apparent from Fig. 1 that when lever 43 is moved to the right, link 39 will be raised, thereby turning shaft 14, together with the stub shaft 18, which is mounted eccentrically thereon, in a counterclocwise direction. The effect ofthis adjustment is to increase the efiective length of connecting rods 17, thereby preventing complete closing of the press. By moving lever 43 back to the position shown in Fig. 1, the parts are returned to their normal position for allowing contact of the bed with the platen.

In order to adapt a platen press of the type which has just been described to the stenciling of designs, it is necessary to substitute a stencil, or screen, for the customary bed of type. This change is accomplished in accordance with my invention, by substituting for the usual form of chase, which is used in platen processes, a special chase which is designed to serve as a support for a stencil-supporting frame. The construction of this special form of chase, and the asso-. ciated stencil-supporting frame, is shown in Figs. 3 and 5. In these figures the chase is indicated generally by the numeral 51 and consists of a box shaped frame, the bed of which is indicated at 52, the sides of said frame being indi cated at 53. The chase is adapted to be demountably secured to bed 11 in the usual manner by means of chase hooks 54 and 55.

A screen or stencil 56 is supported on chase 51 in a rectangular frame 57, the latter consisting of metal strips 58, which are suitably connected together to form a rigid frame unit. The edges of the stencil 55 are secured to strips of wood 59, the. latter being in turn secured to the metal frame pieces 58. The complete stencil frame unit, consisting of the metal rim pieces 58, the wooden rim portion 59, and the stencil 56, is hingedly secured to the chase frame by a pair of hinges 61, whichinterconnect the loweredge of the stencil frame to the adjacent rim portion 53 of the chase. The stencil frame is normally held in the position shown in Fig. 3, in which position the upper edge of the frame rests against a pair of stop bars 62, which are carried on the sides 53 of the chase. A pair of leaf springs 63, interposed between the chase and the upper edge of stencil frame 57, urges the latter outwardly against stop bars 62. When pressure is applied to frame 57 upon closing of the press, springs 63 yield sufiiciently to allow stencil frame 57 to pivot inwardly on the chase from the position shown in Fig. 3 to the position shown in Fig. 4..

Continuing the reference to Figs. 3 and 5, a wiping element, or squeegee, is mounted in chase 51 for reciprocation over stencil 56. In the embodiment shown, the squeegee consists of a rubber wiping element 64 which is movably secured by means of a clampbar 65 to a cross bar or carriage 66, the latter being provided at its opposite ends with vertically disposed arms 67, having rollers. 68 mounted thereon for engaging in guide channels or grooves 69, which are formed in the rim portions 53 of the chase frame. The squeegee carriage 66 is arranged to be reciprocated in the chase by the inking roller frame 13, which in the ordinary operation of the press is used to operate the inking rollers in well known manner. To this end, the arms 67 of the carriage 66 are provided with latterly projecting rods 71, which extend through slots 72 formed in the sides of the chase 51, the free ends of said rods 71 being arranged to connect with hooks 73 which are'carried by the ends of inking roller supporting arms 15. The upper pair of roller supporting arms 15 which are used in the operation of the press when work? ing with type, are not needed in the operation of the press for paint process work, and therefore simply may be left detached or if desired may be entirely removedfrom the inking roller frame.

In Fig. 3, the squeegee is shownpositioned at the lower edge of the stencil, which is the position it occupies when the. press is open. In Fig. 4, the parts are shown in the position occupied when the press is closed, and after the squeegee has traversed the stencil, it being noted that in this position the platen 9 has been moved against stencil frame. 57 to; force the latter inwardly to bring the stencil 56 into pressure contact with wiping element 64, this inward movement of the stencil frame being permitted by the yielding of springs 63. In the closed position of the press, a card or sheet. 74, supported on platen 9, is held in contact with the outer face of stencil 56.

It will be apparent that some interval of time will be required for the squeegee to traverse or advance over the stencil 56, and it is therefore necessary to arrange the press so that it will remain in closed position, with the stencil 56 in contact with the sheet 74, for a length of time suflicient to permit movement of the squeegee over the stencil. As previously pointed out, the ordinary platen press remains closed only for an instant, since the bed of type contacts with all parts of the sheet simultaneously. To momentarily arrest the movement of bed 11 away from the platen, I substitute for the'usual fixed connection between rods 17 and crank disks 19, the yielding connection between these parts hereinbefore described and shown in Fig. 1. Assuming the bed 11 to be in the open position shown in Fig. 1, it will be apparent that when crank disks 19 are turned from the position shown, through an arc of 186 degrees, bed 11 will be movedto the closed position shown in Fig. 4. However, as crank disks 19 continue to rotate from this intermediate closed position, they will not immediate- 1y cause movement of bed 11 away from the platen due to the fact that springs 25 will yield under the pressure from blocks 23 upon reversal in the direction of the latter. Therefore, the rods 17 will not be moved in direction to effect opening of the press untilblocks 23 have moved against the ends of the openings22. This yielding or lost motion connection between rods 1'7 and the crank disks 19 thus serves to maintain the press in closed position for an interval of time suflicient to permit the squeegee to advance over the stencil.

In order to operate the squeegee from the custom'ary form of inking roller frame provided for platen presses, it is necessary to slightly modify using the pressfor stenciling work inasmuch as it is necessary to hold the squeegee at the lower edge of the stencil until the bed'is moved to closed position, and thereafter to quickly advance it over the stencil during the briefinterval'during which the press remains closed. To this end,'I substitute for the usual rigid bar connection between rackets '75 and 76, a hinged bar connection consisting of an arm 7'7, connected at one end-to bracket '75, and a second arm 78,:c0nnected at one end to bracket 76, said arms '77 and '78 being pivotally interconnected with one another at 79'. Arm '78 is provided at its free end with a lateral projection 81, which carries an adjusting bolt 82 the lower end of which bears against arm '77; A stop or limiting connection is thus provided between arms '77 and 78. The squeegee carriagefifi is held at the lower edge of the stencil, as shown in Fig. 3, by a pair of latch arms 83, which are pivoted at 84 to the side members 53 of the chase frame, the lower ends of said-latcharms engaging over arms 6'7 to obstruct upward movement of carriage 66. Arms 83 are normally held in this latching position by springs 85, which are positioned in wells formed in side "portions 53 of the chase frame, said springs being arranged to bear against the lower portions of said arms to urge the latter in a clockwise direction, view in Fig. 3.

When the press is in the open position shown'in Fig. 1, the squeegee carriage 66 is in the lowered position. As the press closes, arms 7'7 and '78 collapse or fold together due to the fact that the' squeegee carriage is held against upward movement by arms 83. By the time thebed 11 has moved to closed position againstthe platen, arms '77 and '78 are in their extreme folded position with inking roller frame 13 still occupying the same position relative to thebedas that shown in Fig. 1. However, as soon as the bed 11 arrives at the completely closed position, latch arms 83 are released from'arms 67,:this being effected by engagement of gripper bars 35 "with lateral projections 86 formed on the upper ends of'arms s .83. Said projections 86 are soidesigned'that'when engaged by bars 35 they will release arms 83 at the exact instant that the sheet '74 onfthe platen comes fully into contact with stencil 56.] The squeegee carriage 66 being thus released, is very quickly moved upwardly across the' s'tencil'by the turning of inking roller name, 131 about shaft 14.

This upward movement of the. squeegee is a corn paratively high speed motion due to the fact that inking roller frame 13 is considerably oveibalanced on shaft 14 and, when released, will'pivot under its own weight in a counterclockwise direction, view in Fig. 1. If in a particular machine, the frame 13 is not sufficientlyoverbal anced, a spring or weights may be attached to the free end thereof to give the necessary quick upward movement of the squeegee. The squeegee is thus movedacross stencil 56 while the-latter is in contact with sheet 74 and forces paint through the penetrable areas of the stencil onto the sheet. During this upward stroke of the squeegee the stencil frame 5'7 is held in the position shown in Fig. 4 by reason of the pressure applied thereto by the platen 9 which collapses spring 63. The upward movement of the squeegee is arrestedfas the end of the active stroke is approached by the pair of leaf springs 88 (Fig.

3) which are positioned. in the sides 53 of the chase frame, and which engage against rollers 68 to check the upward movement of the latter. The squeegee is moved from the upper edge of the stencil downwardly to the lower edge thereof during the interval of opening of the press, this being accomplished by movement of inking rollerframe 13 from raised to lowered position,

which movement carries the squeegee carriage 66 downwardly to the lower edge of the chase frame. In this position latch arms 83 engage over arms 67 to hold the squeegee in the lowered position-shown in Fig. 3. The lower limiting position to which'the squeegeecarriage 66 is thus moved may be regulated by adjusting screw 82 which interconnects arms '77 and78. As soon as the bed 11 moves away from the platen 9, the stencil supporting frame 5'7 is pushed outwardly on the chase by springs 63.thereby avoiding contact of wiping element 64 with the stencil while the squeegee is being returned to the lower edge of the stencil. By hingedly mounting the stencil frame in this manner, so as to always make the squeegee active upon the upstroke and inactive upon the downstroke I am able to prevent troublesome accumulations of paint in the stencil frame.

I have found that paint can' be continuously supplied in drops or in a thin stream, from a container 89 which is supported on chase 51 by a bracket 91. An outlet opening in the lower edge of container 89 is positioned so that paint will drop therefrom directly onto wiping element 64,

from which point it flows against stencil 56. A

manually controlled valve 92 is provided for regulating the rate at which paint flows from the container onto the wiping element 64. The printedsheet is pulled from the stencil by means of stick to the stencil after it has been printed. It

is, therefore, usually necessary to use the rubber band 93, or some equivalent means, to effect separation of the printed sheet from the stencil.

' The" equipment which is required for thus adapting the ordinary platen press to paint process work'is relatively simple and inexpensive.

The special form of stencil-supporting chase frame is so' designed thatit may be substituted forthe" ordinary chase frame without difficulty. Furthermore the provision of a yielding connec'' tion between rods 17 and crank disks 19, and the use of a hinged connection between brackets "75 and 76 in lieu of the ordinary connection, are

changes which may be easily made. Theentire equipment which is required to adapt the press to paint process work may be supplied to; the trade'in the form'of an attachment which may be readily applied to and removed. from the press as desired. The invention thus in effect makes a single machine adaptable for ordinary printing work as well as for stenciling operations. I have found that the quality of designs obtainable with a press of, this type is vastly superior to the re sults obtainable by the older hand-methods of operation. Also there is a substantial saving in cost, inasmuch as a single operator may turn out a much larger volume of work than could be produced by several operators using a hand operated machine. I

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understand therefrom, but the appended claims shouldbe construed as broadly as permissible in view of the prior art. 7 I

What I regard as new and desire to secure by Letters Patent is: 1

1. In a press for printing sheet stock and the like, the combination with a frame, a platen pivotally supported thereon, a bed, an inking frame supported for turning movement on the bed, means providing pivotal support for said bed on the frame, and means for periodically moving said platen and the bed about their points of pivotal support to and from printing-position rel ative to one another, of a stencil, a stencil-supporting frame adapted to be mounted on the bed in position to register with the platen in the closedposition of the press, a squeegee mounted in said frame for reciprocation over the stencil, means operatively connecting said inking frame with the squeegee, means for supplying paint to the stencil, means for periodically arresting movement of the bed away from the platen, whereby to momentarily maintain thepress in closed position, and means for turning said inking frame to advance the squeegee over the face of the stencil while the latter remains in contact with the sheet to be printed.

2. In a press for printing sheet stock and the like, the combination with a frame, a platen pivotally supported thereon, a bed, an inking frame supported for turning movement on the bed, means providing pivotal support for said bed on the frame, and means forperiodically moving said platen and the bed about their points of pivotal support to and from printing position relative to one another, of a stencil, a stencilsupporting frame adapted to be mounted on the bed in position to register with the platen in the closed position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means operatively connecting said inking frame with the squeegee, means for supplying paint to the stencil, means for periodically arresting movement of the bed away from the platen, whereby to momentarily maintain the press in closed position, and means for turning said inkingframe to advance the squeegee over the face of the stencil while the latter remains in contact with the sheet to: be printed, said last mentioned means being operative to return the squeegee to the rear edge of the stencil after the, latter has been removed from-the printed sheet and before .it is returned to printing position relative tothe platen.

3. Ina press for printing sheet stock and the like, the combination with a frame, a platen piv.- otally supported thereon, a bed, an inking framev supported for turning movement on the bed, means providing pivotal support for said bed on the frame, and means for periodically moving said platen and the bed'about their. points of pivotal support toand from printing position relative to one another, of a stencil, astencilsupporting frame adapted to be mounted on the bed in position to register with the platen in the closed position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means operatively connecting said inking frame with the squeegee, means of supplying paint to the stencil, means for periodically arresting movement of the bed away from the platen, whereby to momentarily maintain the press in closed position, means for turning said inking frame to advance-the squeegee over the face of the stencil while the latter remains in contact with the sheet to be printed, said last mentioned means being operative to return the squeegee to the rear edge of the stencil after the latter has been removed from the printed sheet and before it is returned to printing position relative-to the platen, and means preventing contact of the stencil with the squeegee during return movement of the latter to the rear edge of the stencil.

(t. In a press for printing sheet stock and the like, the combination with a platen, a bed, and means for periodically moving the latter to and from printingposition relative to the platen, of achase supported on the bed, a stencil, a stencilsupporting frame movably supported on. the chase in position to register with the platen in the closed position of the press, a squeegee mounts ed'in the chase for reciprocation over the stencil, means for supplying paint to the stencil, means for periodically arresting movement of the. bed away from the platen whereby to momentarily maintain the press in closed position, means for advancing the squeegee over theface of the stencil while the latter remains in con tact with the sheet being printed, said last-mentioned means being operative to return the squeegee to the rear edge of the stencil after the 1atterhas been removedfrom the printed sheet and before it is returned to printing position relative to the platen, and means operative upon movement of the bed away from the platen to movethe stencil-supporting frame to pcsition preventing contact of the stencil with the squeegee during movement of the latter through the return stroke.

5. In a press for printing sheet stock and the 1 like, the combinationwith a platen, a bed, and means for periodically moving the latter to and from printing position relative to the platen, of a stencil, astencilesupporting frame adapted to be mounted on the bed in position to register with the platen in the closed position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means for supplying paint to'the stencil, means for periodically arresting movement of the bed away from the platen, whereby to momentarily maintain the press in closed position, means for advancing the squeegee over the face of the stencil while the latter remains in contact with the sheet to be printed, said last mentioned means being operative to return the squeegee to the rear edge of the stencil after the latter has been removed from the printed sheet and before it is returned to printing position relative to the platen, and means for engaging-andholding the squeegee at the rear edge of thestencil upon completion of the return stroke, said last-mentioned means being operative to release-the squeegee upon movement of the bed to printing position.

6. In a press for printing sheet stock and the like, the combination with a platen, a bed, and means for periodically moving the latter to and from printing position relative to the platen, of a stencil, a stencil-supporting frame adapted to be mounted on the bed in position to register with the platen in the closed position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means for supplying paint to the stencil, means for periodically arresting movement of the bed away from the platen, whereby to momentarily maintain the press in closed position, means for advancing the squeegee over the face of the stencil while the latter remains in contact with the sheet to be printed, said last-mentioned means being operative to return the squeegee to the rear edge of the stencil after the latter has been removed from the printed sheet and before it is returned to printing position relative to the platen, means for engaging and holding the squeegee at the rear edge of the stencil upon completion of the return stroke, said last-mentioned means being operative to release the squeegee upon movement of the bed to printing position, and means operative upon movement of the bed away from the platen to move the stencil and its supporting frame to a position preventing contact of the'stencil with the squeegee during movement of the latter through the return stroke.

7. In a press for printing sheet stock and the like, the combination with a bed, a platen, including a frisket frame pivotally supported thereon, and means for periodically moving the bed and platen to and from printing position relative to one another, of a stencil, a stencil-supporting frame adapted to be mounted on the bed in position to register with the platen in the closed. position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means for supplying paint to the stencil, means for periodically arresting movement of the bed away from the platen, whereby to momentarily maintain the press in closed position, means for advancing the squeegee over the face of the stencil while the latter remains in contact with the sheet to be printed, and means extending between the arms of the frisket frame for engaging the sheet to effect separation thereof from the stencil upon movement of the bed and platen to open position.

8. In a press for printing sheet stock and the like, the combination with a bed, a platen, including a frisket frame, and means for periodically moving the bed and platen to and from printing position relative to one another, of a stencil, a stencil-supporting frame adapted to be mounted on the bed in position to register with the platen in the closed position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means for supplying paint to the stencil, means for periodically arresting movement of the bed away from the platen, whereby to momentarily maintain the press in closed position, means for advancing the squeegee over the face of the stencil while the latter remains in contact with the sheet to be printed, said last-mentioned means being operative to return the squeegee to the rear edge of the stencil after the latter has been removed from the printed sheet and before it is returned to printing position relative to the platen, and latch mechanism for engaging and holding the squeegee at the rear edge of the stencil upon completion of the return stroke, said mechanism being arranged to be engaged by the frisket frame to effect release of the squeegee upon movement of the bed to printing position against the platen.

9. In a platen press for printing sheet stock and the like, the combination of a frame, a bed pivotally supported on the frame, drive means including a crank disk supported on the frame and a crank arm interposed between said disk and the bed for periodically moving the latter to and from closed position against the platen, a stencil, a stencil-supporting frame mounted on the bed in position to register with the platen in the closed position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means for supplying paint to the stencil, means comprising a yielding connection between said crank disk and arm for periodically arresting movement of the bed away from the platen whereby to momentarily maintain the press in closed position, and means for advancing the squeegee over the face of the stencil while the press remains in closed position.

10. In a platen press for printing sheet stock and the like, the combination of a frame, a bed pivotally supported on the frame, drive means including a crank disk supported on the frame and a crank arm interposed between said disk and the bed for periodically moving the latter to and from closed position against the platen, a stencil, a stencil-supporting frame mounted on the bed in position to register with the platen in the closed position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means for supplying paint to the stencil, means comprising a yielding connection between said crank disk and arm for periodically arresting movement of the bed away from the platen whereby to momentarily maintain the press in closed position, and means for advancing the squeegee over the face of the stencil while the press remains in closed position and for returning the squeegee to the rear edge of the stencil during the period in which the bed is away from printing position.

11. In a press for printing sheet stock and the like, the combination with a platen, a bed, and means for periodically moving the latter to and from printing position relative to the platen, of a stencil, stencil-supporting frame adapted to be mounted on the bed in position to register with the platen in the closed position of the press, a squeegee mounted in said frame for reciprocation over the stencil, means for supplying paint to the stencil, means for periodically arresting movement of the bed away from the platen, whereby to momentarily maintain the press in closed position, an inking frame supported for turning movement on the bed, means operatively connecting said frame with the squeegee, a connecting member interposed between the press frame and said inking frame for turning the latter to move the squeegee from the upper to the lower edge of the stencil upon movement of the bed away from the platen, latch mechanism for engaging and holding the squeegee at the lower edge of the stencil pending movement of the bed to closed position, said latching mechanism being arranged to release the squeegee upon movement of the bed to closed position and said inking frame being over-balanced upon its point of support whereby to effect rapid upward movement of the squeegee over the face of the stencil while the latter remains in contact with the sheet to be printed.

HOWARD W. PARMELE.

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