US428188A - Rubber-striping device - Google Patents

Description

N. O. VIDB RUBBER STRIPING DEVICE. Patented May 20, 1890.

(No Model.

"PEEK. 74 2124? I \/E W 4 WITNEEEEE- UNITED STATES PATENT OFFICE.

NATHANIEL O. VIDETO, OF SOUTH FRAMINGHAM, MASSACHUSETTS.

RUBBER-STRIPING DEVICE.

SPECIFICATION forming part of Letters Patent No. 428,188, dated May 20, 1890.

Application filed February 13, 1889. Serial No. 299,777. (No model.)

a all whom it may concern.-

Be it known that I, NATHANIEL O. VIDETO, of South Framingham, in the county of \Vorcester and State of Massachusetts, have invented a new and useful Improvement in Rubber-Striping Devices, of which the follow ing, taken in connection with the accompanying drawings, is a specification.

This invention is in the nature of an improvement upon the apparatus for rubberstriping of water-proof fabrics set forth in the Letters Patent granted to Theodore H. Videto, October 4, 1887, No. 371,155, and December 20, 1887, No. 375,305. The first of th ese prior forms of apparatus had as its novel feature a straight bar or blade having across its lower edge a series of shallow notches, through which limited quantities of the striping compound, placed in mass upon the fabric in front of the blade, escaped in the form of stripes applied to the rubber-coated surface of the fabric as it was drawn beneath such blade. The second of these prior forms of apparatus had a flat-bottomed trough with a series of perforations in its bottom and with a shallow channel of the full width of each perforation leading therefrom to the front and rear edge of the trough in the direction of the movement of the fabric.

My improvement is embodied in an openbottomed trough, preferably semi-cylindrical in form and having along its semicircular lower portion a slot or longitudinal opening entirely through its bottom, so that the striping compound in such trough would come into contact with the fabric with a series of shallow channels leading transversely from this elongated opening. Through these numerous channels the striping compound escapes from such elongated opening in a great number of stripes applied to the fabric-surface, and an exceedingly thin film is deposited upon the face of the fabric in stripes of a breadth equal to the full length of each iongitudinal slot or opening, the color of such broad stripes being a compromise between the color of the groundworkof the fabric and that of the material forming the fine lines. This half-tint in broad stripes, alternating with the unchanged shade of the groundwork and traversed by the finer lines deposited through the series of grooves, is a new effect wholly due to my invention. By this construction I am enabled to produce an improved and most desirable fabric without such discoloration and change of shade of the entire surface as arises from the contact of a mass of the compound resting free upon the movable web, and also one having much finer lines or stripes than could be made by forming a distinct opening for each channel. The rear edge of the lengthwise slot acts as a scraper to prevent any of the compound moving forward with the fabric, except such portion as escapes through the series of channels, and also except the thin film, half-tint in color,

already referred to. The curved bottom of the trough is of great advantage, as the fabric hugs closely to it in front and rear of the slot, and is by atmospheric pressure curved upwardly somewhat into the slot in passing that point.

In the drawings, Figure l is a perspective View showing the open-bottomed trough with a succession of channels from the openings. Fig. 2 represents a piece of the fabric striped by such a trough. Fig. 3 illustrates the process of striping, and Fig. 1 is an end View of a tube to be split for the trough-bottom.

The trough Ais preferably made of a seamless drawn tube split in halves, each half forming the bearing portion or lower part,

against which the fabric is drawn while being striped, the sides being prolonged upwardly by additional strips of metal B, soldered or otherwise secured thereto. Instead of this the sides and bottom may be of a single piece bent to the desired form. Suitable end pieces 0 serve to retain the compound placed in the trough, and suitable fastenings hold the device in place, while the web of the fabric G to be striped is drawn in surfacecontact with the bottom A. The bottom is made open, preferably, by forming a length wise slot E the entire length of the bearingsurface, with unperforated sections a at suitable intervals, or a succession of such openings end to end, so that along the bottom of the trough the striping compound rests, to a width of one-fourth inch or more upon the moving fabric. From this slot, or from each of the subdivisions of it, a shallow stripingtact with the coated surface of the fabric throughout the length of the slot, and being almost wholly removed by the scraping-edge of such slot, while the fine lines, one or more, which traverse the half-tint stripes are due to the heavier deposit of the striping solution which escapes through the shallow transverse groove or grooves. This peculiarity of my fabric is illustrated in Fig. 2, in which the full-color lines deposited by the channels F of the trough are lettered F, while the broad half-tint stripes E represent the thin film caused by the temporary contact of the material in the trouglrslots E with the fabric- The unchanged parts G in this figsurface.

ure pass beneath the unperforated parts a of the trough.

I claim as my in vention-- 1. The improved device described for striping rubber-coated fabrics, the same eonsistin g of ahorizontal trough having through its bottom one or more longitudinal slots, and provided with one or more shallow channels, each of a breadth less than the length of such slot and leading rcarwardly therefrom, sub slantially as and for the purpose set forth.

2. The improved rubber-striping device herein set forth, consisting of the curved-bottomed trough formed with elongated openings, as described, and with a plurality of shallow channels extending from each opening in the direction of the movement of the fabric, for the purpose specified.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 28th day of January, A. l). 1880. Y

- NATHANIEL O. VlDElO.

Witnesses:

Fmco L. OAKs, Time. II. Vmn'ro.

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