US1318284A - Adjustable spider chase and lockup for platen printing presses - Google Patents

Description

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E. KARL.

ADJUSTABLE SPIDER CHASE AND LOCKUP FOR PLATEN PRINTING PRES$ES.

APPLICATION men on. 25. ms.

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ADJUSTABLE SPIDER CHASE AND LOCKUP FOR PLATEN PRINTING PRESSES.

APPLICATION FILED OCT. 26. I9I8- Patented Oct. 7, 1919.

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ERNEST KARL, OF LITCHFIELD, CONNECTICUT.

ADJUSTABLE SPIDER-CHASE AND LOCKU]? FOR PLATEN PRINTING-PRESSES.

Specification of Letters Patent.

Patented Oct. 7, 1919.

Application filed October 26, 1918. Serial No."2'59, 8 58.

To all whom it may concern:

Be it known that I, ERNEST KARL, a citizen of the United States, and a resident of Litchfield, in the county of Litchfield and State of Connecticut, have invented certain new and useful Improvements in Adjustable Spider-Chases and Lockups for Platen Printing-Presses, of which the following is a specification.

My invention relates to attachments for printing presses, and more particularly to adjustable spider chases and lock-ups for platen presses.

The object of this invention is to eliminate furniture, quoins and waste of time in locking up forms for printing.

WVith this and other objects in View, my invention consists in certain novel features of construction, arrangement and combination of parts, as will be hereinafter fully described and pointed out in the claims, reference being had to the accompanying drawings forming a part hereof, and in which: I

Figure 1 is a vertical section of a form of my device applied to a platen printing press;

Fig. 2 is a front elevation of the same;

Fig. 3 is an enlarged fragmentary detail perspective of the upper guide and one of the chase bars; I

Fig. 4 is a perspective view of one of the stays used in the device;

Fig. 5 is a fragmentary enlarged perspective view of the lower guide and one of the chase hooks;

Fig. '6 is a perspective view of one of the horizontal chase bars;

Fig. 7 is a plan view, partly in section, of the movable top guide and its operating mechanism;

Fig. 8 is a front elevation of another form of my device;

Fig. 9 is a vertical section of the same, taken on the line 9-9 of Fig. 8.

Referring to the drawings, and more particularly to Figs. 1 and 2, 20 represents the press bed and 21 the side bars or bearers between which the upper and lower flanged guides and 23 are positioned, the lower guide 23 being stationary and the upper guide 22 movable. The upper guide, it will I be noticed (see Fig. 3.) is inverted L-shaped, having notches 24 in the outside flange 25 to receive lugs 26 at the top of chase bars 27, and is hinged to extension clamp rod 28, which is clamped to inside of uprights 29 on the press and which support the ink plate 30. The said eXtension rod 28 is held in place by sockets 31 and 32; socket 31 is tapped to receive threaded end of rod 28 and socket 32 is drilled to receive opposite end of said rod. By this means accurate adjustment of guide 22 is assured.

The lower guide 23 is made to form a sort of track upon which the chase may slide to either end of the press bed; the guide 23 has a projecting flange 33 on its outer edge which fits into grooves34c at the lower ends of chase bars. The guide is cut out at its lower corners at either end 36 to drop on chase hooks 37 (on press) and is bolted to plate 38 in back of bed under bed frame, bolts 39 having thumb nuts 40 fastening them, plate 38 being slightly shorter in length than lower guide 23, as indicated in dotted lines in Fig.

When placing the chase in the press in this form of device, guide -22 is raised by a. small lever 41 being drawn forward, operating eccentric lifts 42' resting against the top of the bed frame and supported by angle irons 43 bolted to guide 22 just under the hinges l4. The lifts 42' are integral with or riveted to rods 45. Guide '22 rests firmly against the top of the sidecha'se bars, the flange 25 overlapping flanges .26 at the top and back of rabbeted spacing blocks 26, one of which has a peg or lug 26 in center flush at top with flange 26, such a peg or lug being required only at the top of the left hand bar. Notches '24 in the flange 25 extend only as far to rightof bed as to receive peg 26 of block 26 when shortest upper and lowercase bars are used.

7 The spring 46'bet'ween guide'22 and lever 41 keeps the. latter in place.

The side chase bars are made of two flat pieces 27 of suitable thickness, with notches.

47 milled in its outer edges, the pieces being separated about one-eighth of an inch by a rabbeted spacing block 26 fastened at the top and one-eighth inch flat piece or washer 26 at the bottom to form grooves 34 for flange 33 on guide 23 also forming groovesor channels 48 in which corner stays 49 may be freely moved to either end of chase bar and the stay pegs 50 be adjusted in notches 4:7 in the side edges of said side chase bars 27. j 7

It will be noticed that the pegs 50' are placed adjacent each end of the stay 49,

the bars being punched for the pegs 5O forced into a center, the pegs projecting laterally from both faces of the stay. The stays 49 are placed between the spaced members of the 1 side chase bars 27 and passed through mortises 5 1 cut diagonally through the ends of upper and lower form bars 52 and 53, the lower bar having notches 5 a in which the pegs are seated, as seen' in Fig. 2 and support the said bar 53. e

To lock the parts of the chase I have de signed the following device. Bars 54:, which.

are alike, have their outerends notched or mortised forming a bifurcation 54t through which pass thestays 49 and the upper faces of the bifurcations are provided with notches 55 into which drop the pegs 50. The inner'ends of the'lock bars 5e; are tapped to threaded ends 56 'of a turnbuckle screw 57 having a'knurled head 58, the latter being drilled to receive'a key to turn the screw.

From this it will beunderstood that by turning the right and left screw the members of the lock will be drawn toward each, other, drawing the pegs 50 tightly lnt'o'the respective notches and clamping chas'ebars V and stay rods rigidly in place.

The notches in the side edges of the side bars are arranged in horizontal pairs in exact alinement and are numbered so that there can be no error in setting the'stay bars.

The notches 245 in the flange 25. of. upper guide 22 are also numbered, so that the lateral, adjustment must be accurate.

In the form of device shown-in Figs. 8. and 9 the ordinary integral chase frame 60 may be used, the side bars which are composed 'of'spaced apart strips 61 having spacer blocks '62 and 63- at their upper and lower ends respectively, and having outer vertical edges provided with the notches 64cfwith which are engaged the pegs 65 of the, stays66; thelower end of bars 61 will rest on the lower cross bar of the chase.

frame while the upperends of same are tapped in center to receive the knurled head screw67, which, by beingturnedwith a key or pin, bear tightly againstfltheupper bar of the chase and hold sidebars in place;

the upper; and lower bars 62. and 63 are similar to the corresponding parts in the first mentioned form and the locking'device for putting stress on the stay bars. and

pegs is also identical with the first form; These bars which are solidexcept as to the" mortised ends of upper bar, mortised ends and notched edges of lower bar,'are graduated in proper lengths (printers measure ment).;- c f Operation: In lockingyup the form the bar of requisite length (grooved edgesout) with locking device is placed against side of form opposite operator, the bar 63 being receive the right j and left' locking is then effected by using a key or 7 pin inserted in the knurled head of the turnbuckle screw.

. In applying the Figs. '1 to 7 the chase is placed Ontrack form ofde'vice shownin or lower guide 23 and heldwith the left hand, the right hand raising the guide 22 by means of lever 1-1, allowing the chase to be moved to desired position, the peg at top a,

of the side bar 27 engaging 111C116 of notches 24 n flange 25, whereupon operatmg lever 1s released.

"n the form shown 1n Figs' Sand 9 the" essentialparts are simply placed'in' an ordinary chase at desired position and fastened and held thereinby turning screws at top against top bar of the said chase. From the simple, cheap and efficient device of the character described'which may be applied to practically any platen press, whereby small or large jobs may be turned out from above ,it will be perceived that]: provide the same press, and one which will eliminate furniture, quoins and waste of time. v

In locking up form the upright'chase bar I with'lug 26 should be placed at left.

I claim: 7

1. A chase. attachment for a printing press having a press bed and lower chase.

hooks, said attachment including a lower 1 track guide supported by said hooks, spaced vertical bars slidably engaging said track guide, a hingedupper guide,means atfthe upper end of said side bar's adjustably engaging said hinged guide, upperandlower.

form bars mounted between said side bars,

means engaging the'side ba'rs and supporting the lower form bar, andmeansmounted Y on the upper form bar and engaging theside V .115 between the side bars and the upper and bars to cause a: binding and lockingaction lower form bars.

2'. vadjustable chase for printing presses, including slde barscomprising pairs of spaced members, upper and lower form bar's mountedbetween said side bars, stay bars slidably mounted between the members of the spaced bars and adjustably engaging the outer edges of same, and adjustable I locking 'meanscarried by the upper form stay bars. Y

3. An adjustable presses comprising sidebars composed of spaced apart front and rear members hav ng 7 bar, and engaging the opposite ends ofsaid 7 chase for printing graduated notches in their outer edges, up per and lower form bars fitted between the side bars, said form bars having mortises in their opposite ends, the lower bar having notches in its lower face at-the mortised ends, stay bars slidably mounted between the front and rear members of the side bars, laterally projecting pegs adjacent the ends of said stay bars, and engaging the notches in the side edges of the side bars and the lower form bar, contractile locking means mounted on the upper form bar and engaged by certain ones of said stay bars, and means for removably securing the upper and lower ends of the side bars to a press bed.

t. The combination with a printing press including a bed, a stationary lower guide member mounted on the bed, an upper guide member movably mounted at the upper end of the bed, said upper guide including an inverted Lbar provided with a flange having a plurality of longitudinally spaced notches in its lower edge, side chase bars consisting of spaced front and rear plates and spacer blocks connecting same at their upper and lower ends, the upper spacer blocks having flanges adapted to engage the notches in the flange of the upper guide, the lower spaced ends of the side bars adapted to slide on the lower guide member, upper and lower :t'orm bars mounted between the side bars, and means engaging said upper and lower form bars .for adjustably locking the same to the side bars.

5. An adjustable and expansible chase for printing presses, comprising side bars consisting of spaced front and rear members, upper and lower form bars mounted between said side bars and having diagonal mortises in their opposite ends, diagonally disposed stay bars having laterally projecting pegs adjacent their ends, the outer edges of the front and rear members of the side bars having graduated and alined notches adapted to be engaged by certain of the laterally projecting pegs of the stay bars, the lower form bar lso having notches at its mortised end adapted to be engaged by certain of said pegs, and turn buckle means carried by the upper form bar adapted to be engaged by others of the lateral pegs at the upper ends of stay bars, whereby diagonal stress may be put on stay bars to cause the side bars to move toward each other and clamp the upper and lower form bars tightly in place.

ERNEST KARL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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