US731497A - Printing-press. - Google Patents

Description

QW 0 9 l QW. 2 E N U Tu D E T N E .T A .y

.w Y wm 0D.. RG PN .-H .aI GR P 7. 9 A.: l 3 7 o. N

APPLIOATION FILED AUG. 25, 1902.

N0 MODEL.

1 w @WM C H.: .nll :W m i w, T1; w ,M m m .mv v b. Y r fr fl @glu' Z *nm ma NW wv sw@ y .H MMIII 1| ml|w 4|W| |I|||| mw! L@ E u N fg, W u m Q,N\ l QN. m .J. m. IMUIMIMIUMII Il@ .wg/V MMIII! Il l we bams versus ce, Pao'ramno, wAsmNcwN. D c.

PATENTED JUNE- 23, 1903.

G. W. PROUTY.

PRINTING PRESS.

APPLIUATION FILED AUG. 2s, 1902.

2 SHEETS-SHEET 2.

No MODEL.

dual Y Invention George Wlrouty,

@gw/M TH: wams PzTERs cov mmm mm. wAsHmo'mN. o. c

UNITED STATES 4@PATENT Patented June 23, 1903.

UEEICE.

GEORGE w. PROUTY, OE BOSTON, MASSACHUSETTS, ASSIGNOR, RY DIRECT AND MESNE ASSIGNMENTS, To IMPERIALPRESS COMPANY, OE EITTERY, MAINE, AND BOSTON, MASSACHUSETTS, A CORPORATION OE MAINE.

PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 731,497, dated June 2.3, 1903. Application led August 25, 1902. Serial No. 120,884. (No model.)

.To all whom it may concern:

Be it known that I, GEORGE W. PROUTY, of Boston,in the county of Suiolk and State of .Massachusetts,have invented certain new and useful Improvements in Printing-Presses, of which the followin'g,taken in connection with the accompanying drawings,is a specification. My invention relates to printing-presses, and particularly to that class of presses corn- Io monly termed job-presses; andit consists in certain novel features of construction, arrangement, and` combination of parts, which will be readily understood by reference to the description of the accompanying drawings, and to the claims hereto appended, and in which my invention is clearly pointed out.

Figure 1 of the drawings is a front elevation ofa press embodying my invention. Fig. 2 is a side elevation with the several parts in zo the positions which they assume when the impression is on. Fig. 3 is a rear elevation of the same. Fig. 4 is an elevation looking at the same side as Fig. v2, but with the parts in the positions they assume when the impression is off and the platen is at a standstill at the extreme of its backward movement. Fig. 5 is a section of the platen and yoke on line A A on Fig. 4, and Figs. 6 and 7 are respectively an inverted plan and a sec- 3o tional elevation of the forked lever 10.

In the drawings, 1 representsY the main frame of the machine, and 2 is the type-bed formed integral with said frame and to which the type-for1n is secured in a Well-known manner. In suitable bearings in the frame l is mounted the driving-shaft 3, to one end of which is Secured the driving-pulley 4 and a iiy-wheel, (not shown,) and intermediate of its ends Aand within said frame said shaft has 4o secured thereon two pinions 5 5, the teeth of which engage with and impart motion to the spur gear-wheels 6 6, the hubs of which are mounted in bearings in the frame 1, said gears being connected together by a crank-pin 7,

which has mounted thereon one end ofa pit- 'man 8, the opposite end of which is pivoted at 9 to the lever 10, fulcrumed upon and Inovable about the fixed rod 11, said lever having pivoted thereto at 12 one end of the link 13,

the opposite end of which is pivoted to one arm of the elbow-lever 14, mounted upon the `shaft 15, as shown.

The upper arm of the elbow-lever 14 terminates in a long tubular hub 16, which extends transversely of the machine and has mounted therein the shaft 17, on each end of which is mounted one end of a draw-bar 18, the opposite ends of which are mounted on the ends of the shaft 19, upon which the platen-yoke 2O is mounted, so as to be revoluble thereon. So far as hereinbefore described the construction shown is well known.Y

I will now proceed to describe the Subject- Inatter of my present invention.

The shaft 19 has mounted on each end 65 thereof,between the draw-bars 18 and the ends of the yoke 20, one end of a radius-rod 21, the other end of which is firmly Secured to the end of the shaft 22, which is mounted in suitable bearings in the frame 1. The yoke' 7o 20 also has pivoted to ears projecting from its front edge in line with the connection of the draw-bars and the radius-arms 21 the upper end of the shorter radius arm or link 23, the other end of which is pivotally connected by an eccentricepin 25 to the stand 24, secured upon the front wall of the frame 1, said eccentric havingmounted onone end.thereof the slotted arm 26, by means of vwhich and the clamping-screw 27 said eccentric may be moved about the axis of its bearings to adjust the platen as desired. y

The shafts 15 and 17 have mounted thereon just inside of the draw-bars 18 the iukingrollerframes 28, which carry the inking-rolls and their accessories of well-known construcf tion.

The type-bed 2 has mounted thereon the stand 29, which supports the distributingdisk 30, and thefountain 3l, ofwell-known construction. The lever 10 is fulcrumed upon the rod 1l by means of a hole 32, through which said rod passes, said hole being slotted or made longer in the direction of the length of said lever than the diameter of said rod, 95 so that said lever is capable of being moved endwise to a limited extent during a certain portion of its vibration.

, the upwardly-curved portion of the cam-slot' The rod 1l has firmly secured thereon in a fixed or non-revoluble position the cam-plate 33, which has formed therein the cam-slot 34, the lower portion of which is concentric with the axis of its supporting-rod and the upper portion is curved outward to a greater' distance from said axis than said concentric portion, as shown in Figs. 2 and 3.

The lever 10 is forked at both its upper and lower ends, the two side portions being connected together by the curved web 35 and the ribs 36, and has set therein in a fixed position the pin 37, which extends through the two arms of the lower or outer fork and through the cam-slot 34 in the plate 33, and has mounted thereon within said slot the truck 38, which when in the concentric portion of said slot 34 will maintain the lever 10 in the position with the inner end of the slotted hole 32 in its fulcrum and in contact with the rod 11, as shown in Fig. 2, which condition is maintained during the upward movement of said lever until the axis of the truck 38 reaches the point a, the axis of the pivotal connection of said lever with the upper end of the pitman 8 reaches the point b, and the axis of the pivotal connection of said lever with the link 13 reaches the point c, and the elbow-lever 14, the draw-bars, the inking-rollers, and the platen are all in the positions shown in Fig. 4, in which position they remain in a state of rest until the pitman Scompletes its upward movementand descends until the several axes just above referred to arrive at the points ot, b, and c, respectively, on their return movement, thereby giving a dwell to the platen equal to onequarter of aprevolution of the crank. This dwell of the platen is obtained by the movement of the lever 10 endwise in an upward direction caused bythe truck 38 movinginto 34 and the further fact that duringthe upward movement of the pitman 8, after said mentioned axes have reached the several points a, b, and c, the link 13 moves about its pivotal connection to the elbow-lever 14 without moving it from the position shown in Fig. 4. This is a very important feature of my invention, as thereby the dwell or standstill of the platen is very greatly increased, giving ample time for feeding the sheet. Another important feature of my invention is the means employed for supporting the platen and its yoke upon the two radius-arms 2l and 23 of different lengths and connecting the front ends of the draw-bars 18 and the upper ends of the radius-arms 21 to a common axis of motion, as the shaft 19, and also mounting the lower ends of the radius-arm 23 upon an eccentric 25, with means for adjusting said eccentric about its axis to rock the platen and yoke about the axis of the shaft 19 to adjust the impression relative to the upper and lower portions of the typeform.

In Fig. 5, which is a longitudinal section of means I employ to adjust the platen to regulate the impression relative to the right and left ends of the type-form, in which 2O is the yoke, 39 the platen. 40 is a right and left hand screw-shaft mounted at the middle of its length in bearings in the two ears 4l 41, formed on or secured to the yoke 2O and having secured thereon between said bearings a sleeve 42 to prevent endwise movement thereof.

The rear face of the yoke 2O has formed therein a rectangular groove 42, which extends from end to end thereof, and the adjacent side of the platen 39 has formed therein a similar groove 43, but of greater width, and having the two end portions of its bottom inclined toward each end, as shown in Fig. 5. Between the bottoms of the inclined portions of the groove 43 and the bottom of the groove 42a are fitted two wedge-shaped blocks 44 44, through each of which is bored a circular perforation 45, having a diameter in excess of the diameter of the screw-shaft 40, to each of which perforations is fitted a quill or sleeve 46, the inner perimeter of which is threaded to fit the threaded portion of said screw-shaft 40 and provided at its outer end with the ear or lug 47, through an opening in which the adjusting-screw 48 passes and der on each side of said ear 47, so that a rotary movement of said screw 48 will cause the wedge 44 to be moved outward or inward, according to the direction in which said screw is revolved. B y this arrangement of the wedgeblocks v44 the screw-shaft 40, the internallythreaded sleeves 46 and adjusting-'screws 48, and the radius- arms 21 and 23 for supporting the platen and its yoke, the draw-bars 18, mounted on the same axis as the upper ends of the radius-arms 21, the eccentric-pin 25, and the slotted arm 26, with means for clamping said arm in its desired adjusted position, a perfect adjustment of the platen is obtainable with very much less trouble than heretofore.

The platen 39 has formed upon or secured to its lower edge the arms 45? 45a in bearings, in which the gripper shaft or bar 46a is mountgripper-fingers 47a, said gripper-bar also having firmly secured to one end thereof the lever 48, to the movable end of which is pivoted one end of the rod 49, the other end of which is tted to and is movable endwise in the tubular inner end of the handle 50, the tubular end of which is slotted transversely, through which slot the pin 51 is inserted transversely through the rod 49, said slot and pin acting as a stop to limit the movement of the rod 49 in said tubular handle in either direction.

The handle 50 is provided with a notch 52, (shown in dotted lines in Fig. 2,) which engages a pin 53, set in the outer face of the is screwed into a threaded hole in the wedgei 44, said screw 48 being provided with a shouled, and has adjustably secured thereto the` the platen and platen-yoke, I illustrate the IOO left-hand radius-arm 2l, as shown in Fig. 1. The rod 49 is provided with a shoulder 54 near its pivotal connection to the lever 48a, between which and the end of the handle portion said rod is surrounded by the coiled spring 55, which serves to press the gripperfingers 47EL upon the tympan-sheet on the inner face of the platen.

The platen may be secured to the platenyoke by any well-known yielding connection.

The operation of my invention will be readily understood from the foregoing without further explanation here.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

l. In a printing-press,the combination with a fixed bed and a vibrating platen, an elbowlever and a pair of draw-bars connecting said platen and elbow-lever, of a crank; a pitman operated by said crank; a link connected to said elbow-lever; a lever connected at one end to said pitman and link and fulcrumed by a slotted bearing upon a fixed support at its other end; and a stationary cam constructed and arranged to act upon said lever to move it endwise during certain portions of its vibration as and for the purposes described.

2. In a printing-press, the combination with a fixed bed a vibrating and oscillating platen, and radius-arms of two dierent lengths for supporting said platen, of an elbow-lever; a pair of draw-bars connected at one end to said elbow-lever, and at their other ends to said platen and to the upper ends of the pair of longest radius-arms by common axes; a crank; a pitman operated by said crank; a link connected to said elbow-lever; a lever connected at one end to said pitman and link, and fulcrumed by a slotted bearing upon a fixed support at its other end; and a stationary cam constructed and arranged to act upon said lever to move it cndwise during certain portions of its vibration, as and for the purposes described.

3. In a printing-press, the combination of a platen-yoke provided with a pair of ears projecting from its inner face; a screw-shaft mounted in bearings in said ears so as to be revoluble, but non-movable endwise therein, and having formed thereon at one end a righthand-threaded portion, and on its other end a left-hand-threaded portion; a platen having a rectangular groove formed in the side thereof which is adjacent to said yoke, a section of said groove at each end having its bottom inclined or made deeper at its outer end than at its inner end; a pair of wedgeshaped blocks fitted between said inclined surfaces of the platen-groove and the inner surface of the yoke, and each provided with a cylindrical perforation extending longitudinally therethrough; a pair of internallythreaded sleeves mounted on the threaded portions of said screw-shaft and fitted to the perforations of said wedge-shaped blocks, and

each provided with a laterally-projecting ear; and an adjustingscrew mounted in'a bearing in said ear and screwed into said wedgeshaped block as and for the purpose set forth.

4. In a printing-press,the combination with a vibrating platen, a gripper-bar carried by said platen, adjustable gripper-fingers carried by said bar, and a lever secured to the end of said gripper-bar, of radius-arms for supporting said platen; the rod 49 pivoted to said bar-operating lever and provided with the shoulder 54; the tubular handle 50 iitted to and inclosing one end of said rod 49, and provided with the notch 52, and with a transverse slot in its tubular end; the pin 5l set in said'rod 49 and projecting into said transverse slot; the pin 50 set in one of said radiusarms and engaged by said notch 52; and the spring 55 surrounding said rod 49 between the shoulder 54 and the inner end of said handle 50.

5. In a printing-press, the combination of a platen-carrying yoke; a series of radiusarms pi voted at theirupper ends to said yoke, and at their lower ends to some fixed portion of the machine, one of said radius-arms being of less length than the other two; an eccentric pivot-pin forming a bearing for one end of said shorter radius-arm; means for adjusting said eccentric about its axis and clamping it in said adj usted position; a pair of ears projecting from the inner face of said yoke; a screw-shaft mounted in bearings in said ears so as to be non-movable endwise, but revoluble therein, and having formed thereon right and left hand screw-threads, at opposite ends thereof; a platen carried by said yoke and having a groove in the face thereof that is adjacent to said yoke, and extending from side to side thereof, a section of said groove at each end having its bottom inclined or made deeper at one end than at its other end; a pair of wedge-shaped blocks fitted between said inclined surfaces of the platen-groove and the inner surface of the yoke, and each provided with a cylindrical perforation extending longitudinally from end to end thereof; a pair of internallythreaded sleeves mounted on the threaded portions of said screw-shaft and iitted to the perforations of said wedge-shaped blocks,.

and each provided with a laterally-projecting ear; and an adjusting-screw mounted in a bearing in said ear and screwed into said wedge-shaped blocks, whereby a perfect adj ustment of the face of the platen relative to the face of the type-form is obtainable.

AIn testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, 011 this23d day of August, A. D. 1902.

GEORGE W. PROUTY.

Witnesses:

N. C. LOMBARD, J. H. STEvENsoN.

IOO

IIO

IZO

Images