US909260A - Printing-press. - Google Patents

Description

B. P; UPHA M.

PRINTING PRESS.

APILIOATION PIFED AUG.2B,1908.

909,260. Patented Jan. 12,1909.

2 SHEETS-SHEET 1.

Invehlr, Bap 1 1 1 1 Uf'hdm;

B. F. UPHAM. I

PRINTING PRESS.

APPLICATION FILED AUG.28, 1908.

909,260. Patented Jan. 12,1909.

2 SHEETS-SHEET 2.

'IIIIIIIII/IYIIIIIIIIII/II/ll liwnffi v Barf]? Uf'ham;

altar-nay this specification, Figure 1 is aside e evation one of the bearing boxes of the printing cylrnent into a high-speed twe -cylinder press,

this fact by so arranging a? small printing cylind'er that the impression cylinder will re'cede engagement with the latter during the return BURT F. UPHAM, or Bosron, MAssAcnUsE'rrs;

rnmrrnar'asss.

Application filed F32,

Specification of Letters Patented Ian. 12} I909.

swan N0. 450,689.

To all whom it may concern."

Be it known that I, BURT UPHAM, a citi-. zen of the United- States, and a resident of the city of Boston, in the colmty of Sulfolk and Commonwealth of Massachusetts, have invented certain new and useful Irn rovements in Printin -P'ress'es, of when t e following is a full, c ear, and! exact descri tion.

This invention pertains to two-revo ti'on bCdffilIl'd-CYlllldGI' presses, and it has" for itsobjects the eflecting of means whereby such presses can at will be adapted for rinting in two colors, and also be converte 1 in a; Incwith the bed inoperative; In all two-revolution cylinderjpresses, the cylinder is automatieally raised d'nringthe retnrn stroke of the bed, and in adapting the f same for two-color work, I takeadvantage of therefrom by the same motion that causes the last-named cylinder to leave-the plane of thebed. I i s V To adapt the press for high speed two-cyl inder wo-r I provide means for disconriecting the bed from the operatingmechanism of the press such a manner that the bed will remain dead out of contact with thevim ression cylinder, While all the remainder 0' the machinery is running as usual.

Referring to the drawings form-in part of.

of the press in diagram, showing the parts in printing) engagement." Fig.2 is a similar elevation ut with the impression cylinder ele vated for the return stroke of the bed. Fig. 3 is a side elevation of the press, partly in sec tion, showing some of its operative .inechanism, and with the same adapted for-highspeed two cylinder work. Fig. 4 is a detail sectional view of the bed reciprocatingniechanism, showing in means for disconnecting the same from t e remainder of the Ina-f chinery. Fig 5 is a detail sectional view of inder, showing the adj usting device therefor.

I have illustrated my im rovements as applied to a press of a wellnown Cottrell type, but they are equally applicable to any form of two revolution lifting cylinder flat bed press; As shown in'Fig. 3, the impression cylinder 1 acts in conjunction with the reciprocating bed 2, and is elevated out of stroke thereof. The means for such elevasaid cy diameter than the impression cy of the tion' consist of the vertical'rods 3 attached'at their upper ends to the bearing boxes- 4 ct connecting rod 7 and cam shaft 9.

'. The cylindrical printin surface 10 is rota-i i tably supported a slight istance above sible contact with the bed 2, as shown in 1, but in printing enlagement with the inn pressio-n cylinder 1 W en the latter is in enga ement with the bed 2. The rintin cylinder 10 being made considerab y smal er in inder, preferably of one half the's'ize, the above-described location of the printin :cylinderwill bring its line of contact with t impression c linder substantially below the level of the atter's axis, and partially beneath the overhanging. portion of the im ress-ion cylinders per phery. Consequent y, when the impression cylinder rises to avoid contact with the bed during the latters return stroke, it will also nders shaft, the springs 5, toggle 6, S mounted on the draw away from. the printing cylinder, and v i hence cause the latter'to do no printing during substantially the same time that the bed is not printing. This part of the operation of the press is illustrated by Fig. 2. It is of course understood that the said cylinders must be given equal superficial velocities,

and that the paper to be printed comes between the su-rlaces said to be in contact.

- I prefer to mount each end of the shaft 11 printing cylinder ina box 12 horizontally s dable toward and from the impres v sion cylinder in ways 13, as shown in Fig. ,To accurately adjust these bearing boxes 12, vI ap a bolt 14 into each thereof, assing such bolt through an internally an externally threaded'sleeve 15 located in a suitably threaded openin 16 in said, ways. Each sleeve is provi ed with a suitably shaped end 17 for enabling it tobe turned by a wrench or other tool, and, inasmuch as its internal .and external screw threads are of difiieren't pitch, the turning of the sleeve upon its bolt will cause the latter and hence the bearing box to move toward or away from the impression cylinder, depending upon the direction of such turning. -I prefer this arrangement of adjusting screw, for the reason that it is uite inconvenient to locate a set screw at t e side of the ways 13 toward the impression cylinder, when it is attem ted to use set screws for the purpose.

In t e type of Cottrell press illustrated, it is customary to reciprocate the bed by means of a rack fixed thereto, and a toothed. wheel 21 having its shaft 22 connected by means of a universal cou ling to the shaft 23 on which is keyed, t e gear wheel 24. receiving power from the other actuating mechanism of the press, in which niecl'ianism the gear 25 is the immediate ele-- ment. In such a reciprocating means the toclhed wheel 21 traverses first the upper side and then the under side of the rack 20, as is well known.

In order to permit the impression cylinder and printing cylinder to operate without the conjunction of the bed, I wish to disconnect this bed-reciprocatin mechanism from the remainderof the mac inery, so that the latter and said cylinders can work. as usual,

while the bed remains motionless at one side, shown in Fig. 3. To do this, .I prefer to form the gear 24 in two concentric parts, 26, 27, each having a flange 28 overlapping the other, as shown in Fig. t. One -or more screws 29 are ta ped through these flanges,

, double cy so that, when he ted together,'-the power received from the ear 25 by thetooth'ed. section 27 is transmitted to the inner section 26 and hence to the shaft and bed; By wholly or partially withdrawing such screw or screws, the toothed section 27 rotatesfreely upon the inner section, and so fails to com-. municate motion to the bed, although all the other machinery is operating as usual. The bed being thus thrown out of commission, the machinery can be speeded up to any proper limit, and the impression cylinder and printing ?linder cooperate as a high speed inder press. In this manner, by attaching the small printing cylinder 10 to an ordinary type of two revolution bed-andcylinder press I am enabled to convert the vsame into a two color press, and hence capable of doing the work of two of the presses unequipped therewith, and at any moment can convert the press into a hi h-speed printing machine of the two-cylinder ty e.

What I claim as my invention and or which I desire Letters'Patent is as follows,

to wit 1. The combination with a rinting press having a reciprocating bed 3.11( a lifting two revolution impression cylinder coactin g therewith, of a printing cylinder given equal superficial velocity with the first-named cylinder and positioned to be in contact with the latter when the same is in engagement with perficial ve ocity with the first-named cylinder and positioned to be in contact with the latter when the same is in engagement withthe printing surface on the bed; said impression cylinder being disengaged from the printing cylinder when the former is elevated .out of contact with the printing surfaces on said bed, and said bed being capable of being readily disconnected from the actuating mechanism of the press for ermitting the two'cylinders to ,act indepen ently thereof.

3. The combination with a rinting press having a reciprocating bed an a lifting two revolution impression cylinder coacting therewith, of a rmting'cylinder given equal suerficial velbcity with the first-named cyliner and positioned to be in contact with the latter when the same is in en agement with the printin surface on the bed; said impression cylinc er being disenga ed from the printing cylinder when the ormer is elevated out of contact with the printing surface on said bed, and said bed being capable of being readily disconnected from the actuating mechanism of the press'for permitting said sections rigid with respect to each other.

In testimony that I claim the foregoing invention, if have hereunto set my hand this 27 day of August, 1908 I BURT F. UPI-1AM.

Witnesses i C. B. MARBLE, A. J. CRooKETr.

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