US75292A - Joel moulto n - Google Patents

Description

' No. 75,292. PATENTED MAR. 10, 1868,

J. MOULTON. MANUFACTURE OF ELASTIC ROLLS.

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Letters Patent No. 75,292, dated March 10, 1868.

IMPROVEMENT IN THE MAnUrAcruss 0P ELASTIC sorts,

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TO ALL TO WHOM THESE PRESENTS SHALL COME:

Be it known that I, JOEDMOULTON, Boston, county of $ufl'ollr, and State of Messacliusetts,lmve invented a new and useful Manufacture of Elastic Rolls for various purposes; and do hereby declare the following to be a full, clear, and exact description thereof, clue reference being bad to the accompanying drawings, making part of this specification, and in which- Figure 1 is a'perspectiveview of a partially-finished roll, showing different stages in its manufacture.

Figure 2 is a transverse section ofu finished roll as made in accordance with my invention.

Figure 3 is a transverse section of n roll inade as by my invention, and applied to its shaft manner, or as hereinafter referred to and explained.

The purpose of this invention is the production of an elastio' roll for adaptation to clot-lic's'wringers and various other purposes, whiohshall combine advantages not found in others now in use, its chief ch as ompared with others, being a body of firmer texture, and much more enduring qualities, and being manufactured at less cost.

in a. peculiar eructeristics, capability of The invention consists in the employmentcf a woven webbing covered with India rubber, or other analogous gum, and wound spirally about an axis, and subsequently vulcanized, by which the webbing is saturated or spply to such surface a cylinder or casin permeated with the gum, nnd the whole made into efirm, compact muss, substantially as hereinafter explained.

In curryingout my invention. 1 take a strip, a, of stout woven webbing, about three-quarters of an inch in width, with its woof runningtrcnsversely of its length, um! I apply to one or both sides of this webbing u' thin strip or sheet, 6, of India. rubber, of the same or about the same width as the webbing, and subsequently fold the two in the centre, as represented. I then wind this folded combined strip edgcwisc and spirally about an axis or red of about the size of the shaft upon which the roll is to be finally fixed, the layers thus formed lying closely upon each other. I continue this winding until I form a roll of a len I gth snliicient or more than-suflicient for the finished roll. As the-roll thus formed is rough or irregular upon its outer circumference or surface, I

g, c, of India. rubber, in a comparatively highly-finished state, and subject" the whole to the ordinaryivulcanizing process, which causes the rubber to penetrate and saturate the webbing, and convert the whole into'acompact and comparatively homogeneous mass, undone highly favorable for the purposes intended, as it combines much greater strength and tenacity than rolls heretofore made for the sume'purposes while itpossesses at the same time the requisite elasticity. Asthe fibres of the webbing run in a radial direction or therenbouts from the centre or inner circumference of the roll to or toward its outer surface, I obtain great tenacity and resistance to a radial as well as a circumferential strain without destroying or impairing its elastic properties, such properties being of the greatest importance in the use of such rolls as applied to clothes-wringers, printers rolls, dtc. The employment of the webbing with its filling in a radial direction from its centre outward, retains the roll in a; firm unyielding position upon its shaft, thus obviating a great and almost insurmountable objection to the ordinary construction of these rolls, in which the soft, yiclding nature of the rubber constantly causes it to slip and move about upon their shafts. 1!; will be apparent that the roll thus fo med need not necessarily have a hole through its centre,'a.s it may be solid' throughits entire diameter. I

Fig. 3 of the accompanying drawings shows a plan I hove contemplated of preventing possibility of slipping of the roll upon its shaft, which consists in constructing such shaft between its journals in three parts at d, or rods, end introducing the fibres between and about these rods, and subsequently applying about the whole a. mass of rubber, and-vulcanize it, thus rendering any slipping of such mass or roll about them impossible. In practice, however, this will probably not be found necessary or expedient.

I claim, as an improved manufacture, the elastic roll. or tubing, made substnntially as herein shown and described, that is, as composed of India. rubbcr,-or other analogous gum, and a suitable webbing, with the fibres of the latter radiating from the centre or about the centre of the roll outward, as explained.

JOEL MOULTON.

Witnesses v C. W; BALDWIN, Fnsn. Germs.

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