US2674943A - Proof press - Google Patents

Description

F. BARNEY PROOF PRESS April 13, 1954 Filed July 26. 1948 3 Sheets-Sheet 1 NWN-rou. 721mm BARN mkv AT-ronuevs F. BARNEY PROOF PRESS April 13, 1954 3 Sheets-'Sheet 2 Fld July 26. 1948 FREEMAN BARNBY B Q'e/ MM A1' omNeYs April 13, 1954 F, BARNEY 2,674,943

PROOF PRESS 3 Sheets-Sheet 5 Filed July 26. 1948 Yserl.

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. ATTMEYS Patented Apr. 13, 1.954

UNITED STATES ATENT OFFICE PROOF PRESS Application July Z6, 1948, Serial No. 40,651

(Cl. lOl-269) 3 Claims. l This invention is directed to a novel and better proof press, which is used in the art of printing for printing proof sheets which, after a sheet has been printed, may be examined and any neces- `sary corrections made in the type form before the form is transferred to the regular printing press for reproduction in largenumbers. Such proof presses are used to print on a sheet of paper, and are manually operated to move a cylinder around which the paper is carried relative to the type form and imprint upon the paper the type and other characters which are fixed in a form on the bed of the press.

The present invention has among its objects and purposes the provision of novel structure for attaining the best operating condition of the mechanism to grip the paper at one end edge and secure it at such end edge to the rotatable cylinder while the cylinder is stationary, and furthermore automatically gripping said .end edge of the paper by rotation of the handle by which the cylinder is manually turned in one direction, such grip of the paper being released at any position of the cylinder with reference to the other parts of the machine by a reverse turning movement of the handle. It is a further object and purpose to provide a machine of the type described wherein the cylinder is never disturbed with reference to any impression position which it may occupy. The gears on the cylinder f and racks with which said gears engage are always in full mesh and there is no relative upward or downward movement of said cylinder gears with respect to the racks with which they engage, but instead the carriage carrying the cylinder and the racks with which the cylinder engages may be moved upwardly a short distance with reference to the printing form below the cylinder or lowered to printing position, thereby obtaining a greater accuracy in printing and insuring that the cylinder will not be disturbed `or changed from impression position when it is again lowered after being raised. Novel structure for attaining these objects and purposes, and

many others which will appear, may be understood from the vfollowing description, taken in connection with the accompanying drawings, in which,

Fig. l is a side elevation of a proof press con- V structed in accordance with my invention,

Fig. 2 is a vertical section transverselyA of the cylinder and the grip mechanism associated therewith, substantially on the plane of line 2-2 of Fig. 1,

Fig. 3 is a fragmentary, somewhat enlarged 2 vertical section, substantially on the plane of line 3-3 of Fig. 2, illustrating a detail oi the mechanism,

Figs. 4 and 5 are fragmentary enlarged elevations, illustrating the mechanism used for elevating and lowering the cylinder and its carriage and the tracks on which the carriage moves, Fig. 4 showing the position when lifted and Fig. 5 when lowered to printing position,

Fig. 6 is a vertical section transversely oi the printing cylinder, substantially on the plane of line 6 6 of Fig. 2,

Fig. '7 is a fragmentary end elevation showing the vertical retaining and guiding means at the ends of the carriage tracks,

Figs. 8 and 9 are enlarged transverse sections, substantially on the planes of lines 8-3 and 9--9 of Fig. l0, and

Fig. 10 is a side elevation of one of the cylinder carriage tracks of the machine.

Like reference characters refer to like parts in the diierent gures of the drawings, and the sectional views are taken looking in the directions indicated by the arrows.

In the construction of the proof press as disH closed, a frame is provided, having four vertical corner posts l at the corners of the frame. vit the sides of the frame midway between the corner posts are intermediate vertical posts 2. Horizontal longitudinal bars 3 spaced from each other connect the posts, and the posts at opposite sides of the frame may also be connectedY by cross members if desired. At the upper ends of the posts are beams 4 extending horizontally from one side to the other of the machine and between the beams a horizontal type bed 5 extends lengthwise of the machine, strengthened and reinforced at its sides by side rails E (Fig. 2) The bed, beams and frame are xed against movement. On the upper side of the bed 5 the form, including the type and other imprinting characters, is located, as indicated at "i, in Fig. 2.

At opposite sides of theside rails E of the bed 5 two elongated horizontal track members t are located. They are connected with the side rails vi5 of the bed (Figs. 8, 9 and 10) so as to be held from longitudinal movement with respect thereto, but with connections which permita limited vertical movement of the tracks 8. At the outer sides of the side rails 6 rectangular,

vsomewhat elongated recesses 9 (Fig. 8) are proconnected to the rails 8 by screws I I. Also screws I2 pass through the tracks 8 and thread into the rails E of the bed, the heads of the screws being in recesses i3 out in the outer sides of said track members 8, and the passages through the tracks 8 for the shanks of the screws I2 are short Verticalslots I4. Therefore, the rails Smay have a limited vertical movement from aY lower to an upper position, and vice versa. At each end of the bed and at each side thereof a vertical plate I5 is secured which overlaps the adjacent end of the track Il. This provides vertical guides for the ends of the tracks 8 in any upward or downward.

movement thereof and holds them against longitudinal movement with respect to the typecar-rying bed.

At the outer side of each of the corner posts I and at their upper ends and extending. thereabove, a cylinder I6 with a closed bottom is secured, which houses a strong coiled compression spring i1. The upperends of the springs Il bear against the under edges of the tracks 3' and serve to lift the weight thereof and of the cylinder and its carriage which are mounted to traverse the tracks. One of these springs Il is locatedv near each end of each of the track bars 8; A bracket Il)V is securedL to and extends downwardly from each track 8 adjacent each of the spring'carrying cylinders I6. Shafts I9, one at each end ofl the machine, lextend between the end brackets It carried by the track bars 8 and are mounted for rocking movement therein. On each of the shafts near each end thereof an eccentric is secured or formed integral with the shaft which is located directly underneath a horizontal hearing surface 2 I made at the upper side of a recess in the lower portion of the associated beam 4. A rocking of the shaft IQ to the position shown in Fig. 4 from that shownA in Fig. 5, changes the position of the tracks 8 which are vertically moved limited distances upward or downward by rocking the shafts I9, dependent upon the direction of rocking movement given to the shafts. When the cams are in the position of Fig. 4 with their full portions against the surfaces 2i the tracks 8 are pulled downward against the action of the springs I'l and the carriage and cylinder are pulled downward so that by action of the rollers 32 the paper is pressed'rmly against the type on the bed. When the cams are movedto the position of Fig. 5 they release the tracks so that they, together with the carriage and cylinder, are lifted by the springs Il raising the cylinder to release the paper for removal'.

From the shafts I9 arms 22" extend radially, to the outer end of each of which a vertical' has: 23 is pivotally connected at its upper end and extends downwardly nearly to the floor (Fig. l) Saidbars 23, one adjacent each end of the machine, are pivotally connected at their lower ends to levers or arms 24 mounted on transverse shafts 25 carried in journals at the inner sides of and near the lowerv ends of the posts I. Generally horizontal links 26 are pivotally connected at one-endto the other arms on shafts 25 and extends towardv eachl other to substantially the middle of the machine, wheretheyl are connected at their inner ends tothe opposite ends of a bar 27 which is secured to a horizontal rock shaft 28, extending between posts 2, to which the bar 21 is securedmidway between its ends. rEhe shaft 28vat an outer end thereof is provided with a foot lever 29, said lever. having connection at its middle to the shaft 28 and extending inv opposite directionsv therefrom. Engaging the. ele'- vated end of the foot lever with the foot rocks the shafts I9 simultaneously in one direction, and then by depressing the other end of the lever 28 which has been elevated, the rocking of the shafts I9 simultaneously in opposite directions occurs, so that the longitudinal tracks 8 are simultaneously and equallyv raised orlow-ered.

At theouter upper corners'ofthe track members 8, lengthwise thereof, a groove is cut in which a rack 30 is located and secured, leaving inner upwardly projecting track sections or ribs tai which extend the length of the track members. A carriage is mounted to move back and forthonzthe. track members 8 having two spaced vertical sides3l, one at the outer side of each of the tracks 8', and with under rollers 32 spaced fromeach other on shafts 33 extending between the carriage sides 3l, the rollers 32 bearing against the under longitudinal edges of the tracks S. Upper rollers 34 ride upon the projecting ribsvit of the tracks 8 and: shafts, upon which the rollers; 34 are mounted, may extend between the'sidesf'l of the carriage; Thus the carriage andy they cylinder hereafter to' be described; mounted thereon, may be moved back and forth over the-tracks, as is evident.v

A hollow" cylinder 35T havingy vertical ends- 3S and: with a segment, ofl the. cylinder wallremoved at one side, slightly less than irr extent;` as indicated atY 3l', has a geari 3% secured: at the outer side offeachrof` the ends 36;. The t'wor gears 38' mesh with' the racks* 3B'. sleeve' 39 extends axially of the cylinder and to which the: cylinder ends are' attached. and is mounted'. irr bearings at' its ends intheverticalfsides 31 of'. the carriage. A rod 40extends through-the'length` of thesleeve and beyondl one end: ofi it, beyond one-sideroi'". the carriage. A* crank handle 4Iz is secured to the projecting end; of' the rod: At the endl of.' the sleeve adjacent the crank (Figa 3) recesses 42, diametrically opposedY to eachr other; are: cut or otherwise produced;V A- pin 43- extends through the rod lllliandl beyond: itat opposed sides, the endsy ofthe pins being located in the recesses 42. Thus on2 turning the'l rod 40 by means of the crank' 4I in a counter-clockwise direction (Fig. 3) beforethesleeve? 3%` and the cylindersecured thereto start to turn, the projecting endportions of the pins 3l must traversethe slots 42% On reversal of turning movement of. the rod 4I!` the end portions of. the? pin` 43 again traverse the slots 42 in the reverse direction before the cylinder will turn to accompany the turning of' said rod'.

A tympan 44-isr-secured-at one end to aY bar 45 extending` lengthwise of the cylinder 35 adjacent one side of the opening 3lv and covers the outer surface of the cylinder tothe opposite side of the opening. A bar 46 is.- locatedA lengthwise of the cylinder atsaid opposite endof the opening, theother end.- of the tympan being` gripped between. said bar andv thel adjacent edgev of. the cylinder wall at said opening 31.. Radial. arms 4'1 integrally connected. withthebar 46. extend to the sleeve39 and. are-provided. with` bearings 48 at their. inner ends whichv surroundthe sleeve. Thumb screws 4S passing. through. the arms 4.1 thread into an inward projection 35a on the cylinder for. pressing bar. 4.6y against the endof the tympanV andpressing the tympan against the adjacent.r edgeof. the cylinder. at the opening 31 thereof.

A second bar para-Heling the bar 455 andlocated adjacent the elongated sleeve 39, is integral-withthearms 4.1.. In aplurality-ot aligned radially disposed openings through the parallel bars 46 and 56, pins 5i are passed, each at its outer end having a at head 52, the diameterof which is equal to or slightly greater than the width of the bar 4G. Each'of the pins has a coiled compression spring 53 around it, one end Abearing against the inner side of bar 416 and the other against a washer 54 located between the bars 46 and Eil, one around each of the pins 5l which are held in position thereonV by suitable means as bycotter pins. Such springs under compression tend `to Aforce the pins inwardly and bring the inner sides of the heads 52 of the pins 5l against the outer side of bar @5, or against an edge of a proof sheet of paper inserted between them.

'Ihe sleeve 3Q at the inner end of each'of-the pins 5| is recessed for substantially half of its circumference and in each recess a cam 55 is located and permanently secured to the rod 40. Thus when the rod is turned and before pin 43 engages with the sleeve 39 to turn it and the cylinder connected therewith, the cam members 5B move with the rod. In one direction of turning rod 39 the inner ends of the pins 5 i, riding upon the cam surfaces, force said pins outwardly to the position shown in Fig. 6. But on reverse turning movement of the rod di, the cam members 56, moving clockwise With the rod, Will move away from the inner ends of the pins 5 l, which pins follow the retreating cam surfaces under pressure of the springs 53, and move the heads 52 inwardly to clamping or gripping position.

The proof sheet which is to be printed is laid upon the inclined table 5l at the upper outer portion of the carriage and its inner edge brought between the bar 46 and the gripping heads 52, with said heads in outer position as in Fig. 6. The cylinder remains stationary and does not move during the rst movement of the crank 4 I. Such first movement of the crank 4|, turning the rod 4i) until the ends of pins 43 have traversed the slots 42, at the same time releases the pins 5l so that the gripping heads 52 engage against and grip the end edge of the paper against bar 4B before the cylinder starts to turn. With the carriage and tracks in lower position, the rotation of the cylinder and the accompanying turning of the gears 38 causes the carriage to move along the tracks with a simultaneous turning of the cylinder and a succeeding pressing of the paper proof sheet against the outer side of the printing form l which remains stationary on the bed 5. The gripping heads 52, in the rotation of the cylinder in a clockwise direction (Fig. 6), miss the end of the form l which contacts the paper a short distance back of the gripping heads.

Foot operation of the lever 23 moves the cams so that the springs il may lift the cylinder above the form 'l at any time that it may be wanted. There is no disengagement or partial disengagement of the gears 38 and the racks 3B at any time during operation of the press. The inking and inking roller equipment 5B is likewise lifted above the upper surface of the type form. On the return of the carriage to its initial position, the rst movement in initiation of such return is to turn the rod 4G in a reverse direction, thereby releasing the gripping heads 52 before the carriage starts to move back or the cylinder starts its rotation in the opposite direction. When the carriage has been moved back and is stopped at its initial position, the cylinder occupies the identical position which it had at the beginning of the proof sheet printing operation, and is ready to grip the end edge of a succeeding paper sheet to be printed and perform the same cycle of operationswith respect thereto. Y

With the structure described, the gripping an the release of the paper is done while the cylinder is stationary. This isa very desirable result of my invention. :Suchv release of the gripping of the paper is accomplished at any position of the carriage by merely reversing the turning of the crank handle 4l.` The cylinder does not change posi-'- tion in the slightest from any impression position in which it may be located in the operation of the mechanism, as the gears 3S and the racks 30 are always in full mesh. The elevation of the cylinder after 'a proof sheet has been printed is done before the return of the carriage to initial position. The printed proof sheet is released from the gripping 'heads 52, so that on return of the carriage and cylinder to the initial position, the printed sheet is left over the form and beyond the carriage and may be readily removed.

The proof press described has been produced and is in use and is exceptionally satisfactory in operation.

The invention is dened in the appended claims and is to be considered comprehensive of all forms of structure coming Within their scope.

I cla-im:

l. In a structure as described, an elongated horizontal type bed, longitudinal track bars one at each side thereof, a carriage including two spaced apart sides, one adjacent each of said track bars, means for mounting the carriage on the bars for movement of the carriage back and forth thereon, a horizontal cylinder extending between the sides of the carriage, bearing connections between said cylinder and track bars for moving the carriage and the cylinder therewith in one direction on said track bars when said cylinder is turned in one direction and in the opposite direction when the cylinder is reversed in turning movement, said cylinder being hollow and at one side having an opening extending the length thereof, an elongated sleeve extending axially of the cylinder to which the cylinder is connected, said sleeve being rotatably mounted on the carriage sides, a rod extendingv through the sleeve, a crank secured to one end of the rod, said sleeve at an end thereof having diametrically opposed recesses therein, a pin extending through the rod the end portions thereof being received in said recesses, said recesses in length being .greater than the diameter of said pin, sheet gripper means mounted on said cylinder, means for moving said gripper means outwardly on turning the rod in one direction and for releasing said gripping means to move inwardly on turning said rod in the opposite direction, and spring means moving said gripping means inwardly when released.

2. In a proof press, a carriage adapted to be mounted for moving back and forth over a type bed, said carriage having spaced apart sides, a hollow cylinder having a segment longitudinally thereof open, an elongated sleeve extending through the cylinder and on which the cylinder is xed, said sleeve at its ends being rotatably mounted on said sides of the carriage, a bar secured to the cylinder at one side of the open segment thereof, said bar extending lengthwise of said cylinder, a second bar connected therewith located parallel thereto and to said sleeve, a rod extending through the sleeve, a crank handle secured to one end of the rod, pins passing through said bars having gripping heads at their outer ends', said pins at their inner ends being: directed towardsaida sleeve and rod, springJ means one on each pin, tending to move the pins radially in- Ward, said sleeve at the-inner end of. each pin having a. recessed portion therein extending. to said rod:y a cam connected tosa'drod and located in each recess, the inner ends of said pinsbearing against said` cams, and inter-engaging means be- .tween the rodand sleevevfor connecting thev rod with the sleeve` to: turn said sleeve upon turning theA roda limited amount, said rod when turned in either direction first turning said limited amount before connecting with said sleeve to turn it and its attached cylinder, whereby on turning the rodin one direction. said pins are released for automatic inward movement to-bring the gripping vheads thereof against the face of the outer bar before rotation of the cylinder begins, and on reversal' of movement of the rod, said pins are forced outwardly away from operative gripping su position before reversey turning movement ofthe cylinder begins.

3. A structure as dened in claim 2, said interengaging means between the rod and cylinder comprising, a.- pin extending transversely through thev rod and having end portions extending beyond the sides of the rod, said sleeve having recesses into which said end portions of the pins extend, the length of said recesses being greater than thevdiameter of the pin.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,168,887 Huson Jan. 18, 1916 1,297,997 Brower et al Mar. 25,1919 2,162,186 Lee et al June 20,'1939 2,375,793 Kidrick et al May 15, 1945

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