US389995A - weight - Google Patents

Description

(No Model.) 3 Sheets-Sheet 2.

J. WRIGHT.

MACHINERY FOR PRINTING FLOOR GLOTHS, &c.

mwbzwsses I Interior.-

u'vvvwu JOIZ/TI/ WT I Nv PEIERS. Phnlo-iilfiognpii nnnnnnnnnnnnnn c.

(No Model.) I 3 Sheets-Sheet a.

J. WRIGHT.

I MACHINERY FOR PRINTING FLOOR GLOTHS, 8w.

M I WM N4 PETERS, Phnkrhlhogmphor, Wlshingmfl. D. C.

UNITED STATES PATENT OFFICE.

JOHN WRIGHT, OF KIRKCALDY,

COUNTY OF FIFE, SCOTLAND.

MACHINERY FCR PRINTING FLOOR-CLOTHS, 80C,

SPECIFICATION forming part of Letters Patent No. 389,995, dated September 25, 1888.

Application filed June 21, 1857. Serial No. 242,016. (No model.) Patented in England June 12', 1884, No. 8,881.

To aZZ whom it may concern.-

Be it known that 1, JOHN WRIGHT, a subject of the Queen of Great Britain and Ireland, and a resident of Kirkcaldy, county of 5 Fife, Scotland, have invented certain Improvements in Machinery for Printing Floor-Cloths and other Fabrics, (for which I have obtained a British patent dated June 12, 1884,, No. 8,881,) of which the following is a specification.

My said invention has for its objects to improve the arrangements and details of machinery for printing floor-cloths and other fabrics, whereby the machinery is made to operate more satisfactorily and advantageously.

Rollers with raised printing-surfaces are used in the machinery to which my invention relates, and an entire piece of the fabric to be printed is stretched on a large cylinder or drum, which is of a width corresponding to the width of the fabric. The printing-rollers are of a length corresponding to a fourth or other convenient aliquot part of the width of the fabric and drum, and they are carried on a frame which is moved across the width of the drum after printing each part of the width of the fabric.

The frame carrying the printing-rollers, with their accessories, is fitted to slide upon a horizontal bench, and one important part of the present invention consists in combining two or more large drums in one machine with a single printing-roller frame and a bench on which this frame can be moved from one drum to the other. With this arrangement, while the printing-rollers are operating on a piece of fabric on one drum, a printed piece can be removed from another drum and a fresh unprinted piece be placed thereon, thereby effecting a considerable saving of time.

The other improvements comprised in the present invention will be most readily understood with the aid of explanatory drawings, of which two sheets are hereunto appended.

Figure 1 on Sheet 1 of the drawings is a front elevation, and Fig. 2 on Sheet 2 is an end elevation. Figs. 3, 4, and 5 illustrate the stopping details on a larger scale.

The large drums, of which there are two, D D in the example delineated, are carried on shafts 3, which are-separate but in the same horizontal line, and the drums are driven by separate gearing, consisting in each case of a pinion, 4, gearing with an internally-toothed ring on one end of the drum. Each pinion at is fast on a shaft, 5, having on it fast and loose pulleys 6, for a driving-belt from a pulley on a first-motion shaft,7. Each drum D D is made with a recess, 8, at one part of its circumference, and this recess, instead of being quite narrow, as formerly, is made somewhat greater in extent than the space occupied by the printing-rollers P, in order to give more convenient access to these rollers and to allow of their being moved across without being drawn back.

At each end of the recess 8 there is a roller, 9, for holding and tightening the fabric, each roller 9 being armed with projecting points to take hold of the fabric, and, as it is of small diameter, being supported by intermediate bearings, 10, while at its ends it has ratchetwheels and pawls for holding it after turning it to stretch the fabric. The fabric when being put on the cylinders D D as usual, is drawn from a roll and passed round a roller (neither of which is shown, but which may be as described in my British patent, No. 2, 749 of 1870) which can be pressed by screws against the cylinder, so that the fabric maybe laid with a compressing rolling action upon the cylinder-surface.

The printing-rollers P, of which there are six in the example delineated, but which may be varied in number in different machines,are carried by a movable frame, F, consisting of side standards, 11, connected by tie-rods and bolted down upon 'a sole, 12, which is fitted like a lathe slide or saddle to slide upon a horizontal bench, 13, extending in frontof the two drums D D The frame F is moved by means of a rack, 14, fixed along the middle of the bench, there gearing with the rack apinion on a shaft, 15, carried by the frame F and driven by bevel-wheels 16 from a longitudinal shaft, 17, the bevel-wheel on which is fitted with a feather and groove to move along the shaft with the frame. The shaft 17 has at each end fast and loose pulleys 18 for a driving-belt from a pulley on the first-motion shaft 7, and hand-gearing 19 is fitted in connection with the shaft 15, carried by the frame F, for moving this frame by hand when required.

In my improved arrangements for driving the printing-rollers P a frame-piece, 20, fixed by means of studs to one of the side pieces, 11, of the frame F, is formed with bearings for short spindles opposite the ends of the rollers P, and on the outer ends of these spindles there are toothed or sprocket wheels 21,which are driven by means of apitch-chain, 22. (Indicated by a peculiarly-dotted line in Fig. 2.) This pitch chain 22 passes round various guide-pulleys, 23 24, and is driven by a toothed or sprocket wheel, 25, which is movable with the frame F along a shaft, 26, and is fitted to the shaft with a groove and feather. The shaft 26 has at each end of it a pinion, 27, gearing with a spur-wheel, 28, on a shaft, 29, which has also on it a pinion, 30, gearing with the toothed ring of the drum 1) D", and with these arrangements the shaft 26, and through it the printing-rollers P, are driven from whichever of the two drums the printing'rollers are operating on. Engaging and disengaging clutches (not shown in the drawings) are provided for putting the different parts of the gearing into or out of action, as required.

The toothed or sprocket wheels 21, driven by the pitch-chain 22, are not fast on their spindles, but are adjustable thereon by means of the usual wornrwheel and tangent-screw device for securing the proper registering of the patterns of the different rollers, and the spindles have fast on their inner ends disks or arms with pins 31 for acting on arms on the spindles of the printing-rollers P, this arrangement allowing of the adjustment of the printing-rollers more or less near the surface of the drum or fabric. The printing-rollers P are carried and adjusted in the ordinary way, and have in connection with them the usual acces sory parts for supplying color or paint, these accessories being partly shown in the drawings in connection with the top printing-roller, but supposed to be removed in the cases of the other printing-rollers.

When either of the drums D D" is in motion and the fabric on it is being printed, the motions are automatically stopped on a turn of the drum being completed, the drum being then brought into the position in which it is shown in Fig. 2. The stopping details at the inner end or face of the drum are shown in Figs. 3, 4, and 5, and indicated by dotted lines in Fig. 2, and comprise a pin, 32, fixed in the drum,which acts on a lever, 33, centered on a stationary horizontal axis. The lever 33 is in a vertical position when the pin 32 begins to act on it, and is turned over until (when the drum starts again) the pin can pass over the end of it. The lower arm of the lever 33 is connected by a link to a horizontal bell-crank, 34, centered on a vertical pin, the other arm of this bell-crank being connected to a-horizontal rod, 35, which can move in the direction of its length, (parallel to the axis of the drums.) At a part of the rod 35 there is a depression,36, Figs. 1, 3, and 5,which,when the rod is moved through the action of the drumpin 32 on the lever 33, comes under a weighted lever, 37, previously supported by the rod, and this weighted lever 37 thus becomes free to descend a slight distance. In thus descend ing the weighted lever 37, by an arm, 38, on the other side of its fulcrum, lifts up a frictional brake, 39, against the outer surface of the toothed ring of the drum and assists in bringing the drum to rest. At the same time the rod 35, by means of a fork, 40, shifts the driving-belt from the fast to the loose pulley 6 on the shaft 5, which drives the drum. For starting either drum again hand-levers are arranged in convenient positions and act upon the rod 35 through suitable connections,which are not shown.

Between each turn of the drum (excepting when it is considered necessary to make the printing-rollers act more than once on each part of the fabric) the frame F is moved along the bench 13, so that the printing-rollers may operate on a fresh part of the cloth. In Fig. lthe frame F is shown as about midway between its second and third positions and as moving toward the right hand. The move ment of the frame F is started by means of a hand-lever, but is stopped automatically on the frame reaching its next position. For this purpose the fork 41, which moves the drivingbelt from the fast to the loose pulley 18, is fixed on a rocking shaft, 42, which has also fixed on it a lever, 43, connected to a rod, 44-, which is placed in guides under the front edge of the sole 12 of the frame F. Arms 45 are fixed on the rod 44 at proper points and are in the way of a projection, 46, formed or fixed on the under side of the sole 12, so that as the frame F moves along the projection 46 encounters one of the arms 45, and through it moves the rod 44, so as to cause the shifting of the drivingbelt from the fast to the loose pulley 18. When the frame F reaches its proper position, a weightedcatch, 47, jointed to it engages in a hole provided for the purpose in the top of the bench'guide and prevents the frame from moving farther. On the frame F having to be moved again, the catch 47 has to be raised and the rod 44 has to be turned by means of a hand-lever, 48, to take the arm 45 out of the way of the projection 46.

\Vhat I claim as my invention is- 1. In machinery for printing floor-cloths and other fabrics, a set of printing-rollers carried by a frame consisting of standards on a sole movable on a guide-bench by means of a rack, pinion, and bevel-wheels, or by handgearing, into different positions, in combination with two or more large drums driven by pinions gearing with internally-toothed rings on the drums, each drum being made with a recess of somewhat greater extent than the space occupied by the set of printing-rollers, substantially as and for the purposes herein set forth.

2. The drivinggearing for the drums D I), consisting of a shaft, 5, with fast and loose pul- IIO leys 6 and pinions 4, gearing with internallytoothed rings on one end of each drum, in combination with the automatic stopping details, comprising a pin, 32, acting on a lever, 33, the lower arm of which is connected bya link to a bell-crank connected to a movable rod, 35, made with a depression, 36, into which a weighted lever, 37, can descend and by an arm, 38, lift a frictional brake, 39, against the drum, and a fork, 40, on the rod 35 to shift the driving-belt, substantially as herein set forth.

3. The combination of parts for moving the printing-roller frame, and consisting of a rack, 14, fixed to the bench l3 and gearing with a pinion on a shaft, 15, driven by bevel-wheels 16 from a shaft, 17, fitted with fast and loose pulleys l8, and hand-gearing 19, in combination with the automatic stopping details, comprising a rocking shaft, 42, having on it a fork, 41, and a lever, 43, connected to a rod, 44, made with arms 45, to act on a prothe endless pitch-chain 22, passing round the wheels 21 and guide-pulleys 23 24, and driven 0 by a movable wheel, 25, on ashaft, 26, having at each end a pinion, 27, gearing with a spurwheel, 28, on a shaft, 29, also having apinion. 30, gearing with the toothed ring of one of the drums, substantially as and for the purpose herein set forth.

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

JOHN WRIG HT.

Witnesses:

EDMUND HUNT, DAVID FERGUSON.

Images