US432800A

US432800A - Cylinder printing press

Info

Publication number: US432800A
Authority: US
Publication date: 1890-07-22
Anticipated expiration: 1907-07-22

Description

' 2 Sheets-Sheet 1.

(No Model.)

B. HUBER. CYLINDER PRINTING PRESS.

No. 432,800. Patented July 22, 1890.

Invenivr ,EedhoZaZJMt? g M Wil I witnesses I (No Model.) 2 Sheets-Sheet 2.

B. HUBER. CYLINDER PRINTING PRESS.

Patented July 22, 1890.,

Zl/ztnesses iii &

UNITED STATES PATENT OFFICE.

BERTHOLD HUBER, OF TAUNTON, MASSACHUSETTS, ASSIGNOR TO THE HUBER PRINTING PRESS COMPANY, OF SAME PLACE.

CYLINDER PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 432,800, dated July 22, 1890.

Application filed December 6, 1889. Serial Nil-332 762. (N0 model.)

To all whom it may concern.-

Be it known that I, BERTHOLD HUBER, of Taunton, county of Bristol, State of Massachusetts, have invented an Improvement in Cylinder Printing-Presses, of which the following description,in connection with the accompanying drawings, is a specification, like letters on the drawings representinglike parts.

This invention has for its object to provide a printing-press with means whereby a reciprocating bed to carry the type or form and a co-operating cylinder having a tympan may be moved at the same surface speed for most of the length of the stroke of the bed, to thus obviate any blurring of print or injury to the paper.

My invention consists in the cylinder, its attached gear, an annular plate, and a radially-slotted uniformly-rotating gear supported upon said plate near its circumference, combined with a ring-gear mounted upon the circumference of said plate, and a crank-pin between it and the uniformly-rotating gear sliding in the slot in the latter to rotate the ring-gear at a variable speed, the latter engaging and actuating the gear attached to the cylinder, substantially as will be described.

Other features of my invention will be pointed out in the claims at the end of this specification.

Figure 1 is a partial side elevation and section in the line :0 Fig. 3, of a printing-press embodying my invention. Fig.2 is a section in the line 00 as, Fig. 1. Fig. 3 is a section in the irregular line m, Fig. 2. Fig. 4: is a section in the line 00 Fig. 1.

Referring to the drawings, A represents a frame-work of suitable shape to sustain the Various working parts. The frame-work A has suitable bearings for the reception of the main shaft 13, provided with a suitable belt or other pulley or wheel B, by which power is applied to rotate the said shaft. The shaft B has a beveled gear I) at its inner end,which engages a beveled ring-gear b, fitted toturn about an annular guide 11 suitably supported upon a brace or stand N. The beveled gear referred to has a crank pin or stud c, which enters a block 0, free to travel in a slot or Way formed in the under side of a girt or bar 0 (see Figs. 3 and 4,) forming part of an actuating-slide, having at its opposite sides two like rack-bars d, adapted to slide in guides at the inner sides of the frame-work, as best represented in Fig. 3. The rack-bars d of the actuatingslide engage like gears 61, (one shown fully in Fig. 2 by breaking away one of the said rack-bars) the said gears being fast on a shaft (Z each gear being located just inside the frame-work. The shaft d has upon it near its center a gear f, which engages a toothed rack f, attached to the bed f on which is placed the usual form f. The bed f reciprocated through the rack-bars d of the actuating-slide engaging the pinions d, is moved at a speed which varies as the bed arrives at the ends of its stroke and is about to be reversed, there being more or less of a dead-point due to the employment of the crank c in the groove of the girt or bar 0 The shaft B also has upon it a pinion c, which engages a toothed gear e, mounted on a stud e (shown best in Fig. 2 as supported upon and near the circumference of an annular plate c suitably secured to the outer side of the framework of the machine. The annular plate referred to (see Fig. 2) is reduced to receive upon it a ring-gear 6 provided with a stud e surrounded by a block e, which block enters a radial slot e in the toothed gear a the said gears e and e thus being mounted eccentric- -ally one with relation to the other, as described. The rotating cylinder 0, having the tympan h, is mounted upon a shaft 0, having attached to it near one end a toothed gear 0 the said gear being engaged by and deriving its movement from the ring-gear a, which is rotated at a variable speed through the sliding crank-pin 6 carried by the gear 6, the variation in speed of the ring-gear being so proportioned as to cause the surface speed of the bed and the form thereon and of the tympan h of the cylinder 0 to travel at substantially the same surface speed so long as the face of the tympan is opposed to the form f, the said form being opposite the tyinpan for most of the time that the bed is moving from one to the other end of the stroke. The reciprocating plain surface or bed and the cylindrical surface 0 are common to bed and cylinder printing-presses. The rotating cylinder 0 and the reciprocating bed f are both act- IOO uated by gearing on one and the same driving shaft, and in actuating both the cylinder and the bed there is interposed between the shaft and cylinder in one instance and the shaft and bed in the other instance, a crank, so that the surface speed of the cylinder varies durin g each rotation, and so, also, t-hcsurface speed of the bed varies during each complete stroke, yet these variations are so arranged as to time that While the tympan of the cylinder is 0pposite the form on the bed and printing is being done the surface of the cylinder and the surface of the bed move at substantially the same speed.

I have shown my invention as applied to a printing-press; but I desire to hold the same if applied to any other class of machine wherein like movements are desired.

I claim-- 1. The combination, in a printing-press, of the following instrumentalities, viz: a cylinder having a tympan, a bed to support the form, a main driving-shaft provided with pinions, and intermediate mechanism between the said shaft'and the said cylinder and the said shaft and the said bed, each of the said intermediate mechanisms containing as one member a crank, whereby on the rotation of the said main shaft the surface speed of the rotating cylinder and the surface speed of the reciprocating bed are made to correspond at all times while the tympan is opposite to the bed, as when printing is being done, the combination being and operating substantially as described.-

2. The cylinder, its attached gear 0 the annular plate 6 and the radially-slotted uniformly-rotating gear 6', supported upon said plate near its circumference, combined with the ring-gear e, mounted upon the circumference of said plate eccentric to the gear 6', and a crank between it and the latter gear sliding in the slot therein to rotate the gear 6 at a variable speed, the said gear engaging and actuating the gear 0 substantially as described.

3. The bed f and its attached rack, theshaft d having pinions d f, and the actuat-' ing-slide having a rack, combined with a retating gear I), and a crank-pin actuated by it to reciprocate the said actuating-slide, substantially as and for the purposes set forth.

4. Ina printing-press, the following instrumentalities, viz: a rotating cylinder having a tyinpan, a gear C the gear e engaging the gear 0 the gear e, mounted eccentri'cally with relation to the gear 6 a movable crank to connect it with the gear a, a reciprocating form-carrying bed having a rack, the shaft (1 having gears d and ft the actuating-slide having a rack and slotted, as described, the beveled gear Z), and crank-pin to connect it with the said actuating-slide, combined with the shaft 13, having the gears 19 and e, to operate substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' BERTHOLD HUBER. \Vitnesscs:

W. K. HODGMAN,

FRED M. ATWOOD.