US687249A

US687249A - Process of forming hollow seamless rubber articles.

Info

Publication number: US687249A
Application number: US7155201A
Authority: US
Inventors: Thomas W Miller
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-08-10
Filing date: 1901-08-10
Publication date: 1901-11-26
Anticipated expiration: 1918-11-26

Description

No. 687,249. -Patnted Nov. 26, I90l. T. w. MILLER. v

PROCESS OF FORMING HOLLOW SEAMLESS RUBBER ARTICLES.

(Application filed Aug. 10, 1901,)

(No Model.)

UNITED STATES PATENT "OFFI E.

THOMAS W. MILLER, or AKRON, OHIO.

PROCESS OF FORMING HOLLOW SEAMLESS RUBBER ARTICLES.

SPECIFIGATION forming part of Letters Patent No. 687,249, dated November 26, 1901-.

Application filed August 1901. serial N0. 71,552. (No specimens.)

To all whom it may concern.-

Be it known that I, THOMAS IV. MILLER, a citizen of the United States,residing at Akron, in the county of Summit, State of Ohio, have 5 invented new and useful Improvements in Processes of Forming Hollow Seamless Rubber Articles, of which the following is a specification.

My invention relates to processes for mak- IO ing hollow 'fiexiblerubber articles-such as balls, punching-bags, Water-bags, &c.'and has for its object to provide an improved process whereby a seamless article will be produced, the article being, moreover, cured on the inside and being provided with an improved means for closing the necessary aperture therein. This object I accomplish in the manner and by the means hereinafter described and claimed, reference being had to the accompanying drawings, in which-- Figure 1 is an elevation of a suitable form on which the article is giventhe desired configuration, the article being shown thereon in section. Fig. 2 is a sectional view of the article after its removal from the form. Fig. 3 is a similar view of a completed article, in this instance a ball. Fig. 4 is a similar view of a completed water-bag.

Similar numerals of reference denote cor- 0 responding parts in the several views.

In carrying out my improved process to form a rubber ball, for instance, I first provide a bath of rubber cement of the proper consistency, into which is dipped the solid 5 form 1, said dipping being repeated until there is formed thereon a ball 2 of the desired thickness. The form 1 is provided with an extension 3 not only for convenience in handling, but primarily for the purpose of forming a neck or stem 4 on the ball 1 during the dipping, it being observed that said extension 3 is flared outward at 5 for a short distance from its point of juncture with the form to give the neck or stem 4 a similarly-flared con- 5 figuration, as shown in Fig. 2. After the dipping has given the desired thickness to the ball, which may be thus made light or heavy, according to the use to which it is to be put, the rubber constituting the ball is then cured While on the form and is then removed therefrom,whieh may be more readilyaccomplished by first heating the same by dipping it in hot water and then distending the neck or stem 4 suffieiently to permit the passage therethrough of the form 1. The ball 2 (shown removed from the form in Fig. 2) is then turned inside out to bring the cured surface thereof on the inside, and the neck or stem 4 is reversed, so as to project into the ball, after which a plug 6, of rubber or other suitable 6o material, isinserted thereinto and firmly cemented to said'neck or stem 4, as shown in Fig. 3, it being observed that said plug is of the exact configuration of said neck or stem, the inward-flaringshape of the two materially aiding to prevent said plug being forced out, particularly if the ball is inflated. By forming this neck or stem 4 on the ball a firm opening is provided for the ball which neither bulges nor sinks when the ball is turned inside out, while the walls thereof afford a large area for cementing thereto the plug 6.

I have shown in Fig. 4 an article 7 of a shape suitable for a Water-bag, the same being made by the process hereinbefore described, the

plug 8 inserted thereinto being provided with a threaded aperture for the reception of a.

suitable stopper 9, usually employed in articles of this character, said plug 8 also having the usual flaring mouth 10 to provide for pouring the water thereinto.

While I have shown only a solid plug and a threaded plug, it will be understood that any other form of plug-a valved plug for inflation, for instance-may be employed, the form of plug depending entirely on the nature and use of the article.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The process of manufacturing seamless hollow rubber articles, which consists in first forming a body portion and a neck or stem by dipping a suitable form in a'bath of rubber, then stripping said article so formed from 5 said form, then turning said neck or stem Within the interior of the body portion, and finally inserting a suitable closing-plug in said neck or stem, substantially as set forth.

2. The process of manufacturing seamless 10o hollow rubber articles, which consists in first forming a body portion and a neck or stem by dipping a suitable form in a bath of rubber, then curing said article so formed while on the form, then stripping said article from In testimony whereof I have hereunto set the form, then turning said article inside Out my hand in the presence of two subscribing to bring the cured surface on the inside, then witnesses.

turning said neck or stem within the interior THOMAS XV. MILLER. 5 0f the body portion, and finally inserting and \Vitnesses:

fastening a suitable closing-plug in said neck J. A. H. MYERS,

or stem, substantially as set forth. DAYTON A. DOYLE.