US763840A - Printing-press. - Google Patents

Description

PATENTED JUNE 28, 1904.

H. P. BEGHMAN. PRINTING PRESS.

APPLICATION FILED MAR. s. 1901.

N0 MODEL.

PATBNTED JUNE 28, 1904.

' H. P; BEGHMAN.

PRINTING PRESS.

APPLICATION IILED MAR. 6} 1901.

NO MODEL.

3 snnms-simnr 2.

Hi/TNESSES Unwrap "res Patented June 28, 1904.

Parana Orrica,

HENRY F. BECHMAN, OF BATTLECREEK, MIOHTGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO DETRO'LT TRUST COMPANY, TRUSTEE, OF [)iC'lltOll, MICHIGAN, A CORPORATION'OF MICHIGAN.

PRiNTiNG PRESS- SPECIFICATION forming part of Letters Patent No. 763,840, dated June 28, 1904.

Application filed March 6, 1901.

To all whom, it may con-earn:

Be it known that I, HENRY F., BEOHMAN, of Battlecreek, in the county of Calhoun and State of Michigan, have invented certain new and 5 'usefullmprovementsin Printing-Presses; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

1 o This invention is an improvement in flat-bod movable-cylinder printing-presses, particularly upon presses of the well-known Cox duplex. type, wherein the cylinders are mounted on reciprocating cross-heads which :5 have projecting tongues sliding in corresponding grooves in the side frames of the press. These tongues support the weight of the crosshoads and cylinders and inking mechanisms carried thereby and rests upon'the lower sides 20 of the grooves when the cylinders are not in impression; but during the taking of an impression the tongues hold the cylinders down harden the forms by their pressing against the upper sides of the grooves. Owing to the 25 weight of the parts in-the first instance and the impression-pressure in the second instance,

, there is a great deal of friction between the tongue and'grooves, which of course requires expenditure of power to overcome. My oh- 3 ject is to reduce this frictional resistance, and thereby facilitate the reciprocation of the cross-heads and lessen the power required to operate the press, and I accomplish this object by providing roller hearings or contacts be- 3 5 tween the tongue and slide, and the accompanying drawings illustrate a practical embodiment of the invention as applied to a Cox duplex press.

In said drawings, Figure 1 a side eieva- 4- tion of such a press, showing the general arrangement of parts. Fig. 2 is an enlarged sectional elevation showing the manner of arranging the roiler-bearings above and below the tongues within the grooves. Fig. 3 is an 45 enlarged detail transverse section; Fig. 4:, a

detail section, and Fig. 5 is a detaii plan of one set of rollers. Fig. Sis a detail transverse section through a Cox duplex press, illustrating the invention applied thereto.

Serial No. 50,100. (No model.)

having the upper and lower impression-cylinders C c journaled in them and also carrying the inking systems D (Z on opposite sides of the cylinders, as indicated'iin the drawings. The cross-heads are reciprocated back and forth along grooves a, so asto reciprocate the cylinders over the type-beds T t, by pi f man 1:, connected to crank-wheels E. All those parts being well known are merely convcn"- tionally shown, and the parts A B E 0 are du- L plicated on the opposite side of the press.

Ordinarily the tongues are of such crosssection as to fit snugly in the grooves (i to properly guide the cross-heads and cylinders and maintain them in proper positions during their reciprocations; but in tliepresent instance the groove is made wider than the tongue to permit the introduction of systems of antifriction rollers F and f below and above the tongue 7/, as shown. The rollers F are journaled on pins (3-, connected to opposite bars H and I, which are connected at their ends and altogether formaroller system that lies within groove m below tongue 6. The rollers f are likewise journaled on pins g, connected to-opposite bars 11, 2 which are also connected at their ends, and altogetherjorm a roller systemf', that lies within groove a, but above tongue I). As shown, there are more rollers F than f, because the rollers F come into active operation during almost the entire stroke of the cross-heads, while rollers f come intoactive operation only during the periods of impression.

To keep all the rollers in proper relative position, the upper and lower bars H T and it a may all be connected at their adjoining ends to end blocks L L, so that both roller systems may be handled as a unit, and all the rollers must keep proper track and time in the operation of the device. The roller sys terns, however, are shorter than groove a to permit them to move longitudinally therein,

and thus practically eliminate appreciahie the rollers within the groove at bottom and top thereof and shims or shoes N-n below and above the tongue, so that the proper close fit between" the peripheries of the rollers and upper and lower sides of maintained.

It will be obvious that when the cylinders are not in impression the weight of the crossheads and connected parts will be carried-on F, interposed between the under side of tongue band the lower side of groove a, and when the cylinders are on impression the strain will be transmittedto the frame through rollers f, which will then be pressed between the upper sides of the groove and top side of tongue. The rollers are, in brief, so arranged as to carry both the weight of' the cross-heads and parts mounted thereon while the cylinders are off impression and to also take the uplifting strain or pressure on the cross-headswhen the cylinders are operating over the type, thus eliminating'sliding friction between the tongue 'and groove at all times. i

I consider the introduction of rollers on the upper side of the cross-head tongues the most lieves thefriction caused by the impression. The weight of the cylinders and cross-heads is largely borne by the cylinder and bed bearers when ofi' impression; but it is most important to relieve the friction resulting from the impression squeeze, and the introduction of the upper rollers for the purpose specified is therefore particularly novel and useful.

Having thus described my invention, what I therefore claim as new; and desire to secure by Letters Patent thereon, is 1. In a printing-press, the combination of ,friction between the cross head and k 'whenth'e cylinder is out of impression-,L'and groove and tongue may be important feature of the invention, as it reimpression-cylinder: ithfrictionirollerssubstantially as described interposed between the cross-head and ;.f ra.me in position to prevent frame friction-rollers interposed between the crosshead and frame in position to ,preventfriction between the cross-head and frame whenthe cylinder is on the type, substantially as described.

- "2. In a printing-press, the combination of a main frame, the upper and lower type-beds,

upper andlower cylinders and cross-heads j carrying the cylinders having 'tonguesjto be reciprocated in grooves in the main frame; with antifriction-rollers interposed between the top sides of of grooves and between the under sides of the tongues and lower sides .of the grooves; substantlally as described, f I I 3. In a printing-press, the combination of the main frame, the type-beds, the cross-heads having tongues engaging grooves in the frame intermediate the beds, impression-cylinders carried by said cross-heads and means for reciprocating said cross-heads; with a system of antifriction-rollers interposed between the top sides of the tongues and. the upper sides of the grooves, a system of antifriction-rollers interposed between the under sides of the tongues and the lower sides of grooves, and connections between the upper and lower systems of rollers for the purpose and substantially as described. 7

In testimony thatI claim the foregoing as my own Iafiix my signature in presence of two witnesses.

OHARLns H. WHEELOCK, FRANK W. DUNNING.

the tongues and upper sides

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