US1638003A - Appliance for bodily exercise - Google Patents

Description

2 9 ,ms B. NEUMANN APPLIANCE FOR BODILY EXERQISE Filed m. 14. 1926 Fig.1

.9 e i Y 9 Fig.2

In yenior:

Patented Aug. 2, 1927.

UNITED STATES PATENT OFFICE.

ammo NEUMANN, or NUREMBERG, GERMANY.

APPLIANCE FOR BODILY EXERCISE.

Application filed August 14, 1926, Serial No.

- shaped handles.

So-called chest expanders are known, the extensible member of which is characterized by helical steel springs having stirrup-like handles at either end. These exercising appliances, however, have various disadvantages which consist in this, that not only are they very expensive to manufacture, which makes their purchase by the general public prohibitive, but that they are not at 0 all handy to use and that the helical springs are liable to injure the user. In addition to this the appliances are-very heavy and the manner in which the helical springs are attached to the handles is extremely inconvenient and complicated, so that they cannot be regarded as a good marketable article.

The chest expander accordingto the present invention is free from these disadvantages, as it does not have the heavy and expensive helical springs and as the extensible member is formed of a single strand rubber tube. The grip at either end, which in the old appliances had the form of a stirrup, is in the new appliance made in the form of a ball, which provide the practical advantagle from the'users point of view, of powerfu y and eificiently developing the hands gripping the balls. The danger of injury is also entirely eliminated owing to the use of the rubberrtube, so that such chest expanders may be safel used for developing the body even by c ildren, which has been impossible with the appliances 5 hitherto in use. vThe'chest expander made in accordance with the present invention is an eminently saleable article which is very cheap to manufacture and can be bought by the general public owin to its lowprice..

For fixing the rubber tu in the balls, the latter are provided with axial conical holes, the tube being clamped and held in the said 129,219, and in Germany September 2, 1925.

holes by conical plugs provided with grooves.

The accompanying drawing shows'a constructional example of the chest expander according to the present invention, in which Fig. 1 is a longitudinal section and Fig. 2 a plan view.

The chest expander consists of a single strand rubber tube a and of the two balls (1 and b which serve as grips at the two ends of the tube for the hands of the user. These balls are provided with bores which are in part cylindrical, as at d, and in part flared to the outside, as at c. In these bores are conical plugs f having grooves 9. For fixing the balls on the two ends of the tube, the

.plug 7 is first inserted in the tube, after use, the plugs become more and more firmly pressed into the bores and wedge the tube against the walls.

The wedge-shaped single groove, which will also ensure a rm connection between the tube and the balls. In place of the plug a ball may be used, which is slightly larger in diameter than the cylindrical portion of the bore, thus seculping the connection of the ball and the tu e.

What I claim is:

An appliance for bodily exercise, comprising in combination a rubber tube serving as an extensible member; two ball-she. ed grips at either end of the said'member; a hore provided in each of said grips and being artly cylindrical and part1 outwardly ared; conical plugs provide with grooves fitted inthe tube and adaptedto serve as wedge members 'for fixing the'extensible member 1n the said ball-shaped gri s.

In testimony whereo I ailix my signature.

, BRUNO NEUMANN.

plug may have onl a

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