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Publication numberUS272144 A
Publication typeGrant
Publication dateFeb 13, 1883
Filing dateJan 2, 1883
Publication numberUS 272144 A, US 272144A, US-A-272144, US272144 A, US272144A
InventorsWilliam T. Moginnis
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
moginn is
US 272144 A
Abstract  available in
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Description  (OCR text may contain errors)

i ofthe city, county, and State of'New York,

UNITED STATES y WILLIAM T. MUGINNIS,

PATENT OEEICE. i

or NEET YORK, N. Y.

BELL.

SPECIFICATION forming` part of Letters Patent No. 272,144, dated February 13, 1883.

Application filed January 2, 1883. (No model.)

To cllwhom it may concern:

Be it known that I, WILLIAM T. MeGINNIs,

haveinvexed a new and useful Improvement in DunbBells5 and I do hereby declare'that the following is a full and exact description thereof, reference being had to theaccom panying drawing, and to the letters of reference. marked thereon, making a part vof this specification. My invention relates to dumb-bells for calisthenic purposes.4

It has for its object the production of an ex ercising-Weight-which shall he not only neat and attractive, but by reason ot' its peculiar characteristics will gently stimulate the nervous tissues and serve to induce a use ot' the device for hygienic purposes.

It consists ot' a steel bar enlarged at its ends in the form of a dumb-bell, and magnetized to saturation, so as to be, in fact, a powerful permanent magnet, and which may be combined with a longitudinal core of brass or copper.

My improved dumb-bell is produced from a metallic bar, preferably of hardened steel, which is forged in [he shape illustrated in the accompanying drawing, `and thereby adapted to be most easily grasped in the hand, andis made of a size which shall embody a comparatively light weight.

The dumb-bell, of steel or iron, is converted into a magnet by submitting it to the action of the current of a dynamomachine,'or by other of the Well-known processes for the magnetization of iron. Being thus magnetized, it

`of the magnet.

`I contemplate as a modification of my invention the insertion longitudinally within the magnetic dumb-bell of a central core of vbrass or copper, (see dotted lines in the drawing,) or of strips of copper or zinc, to increase the magnetic action ot' the device.

I claim as my invention- As a new article ot' manufacture, a magnetic dumbbell, substantiallyas herein described.

In testimony whereof I have .signed my name to this specification in the presence of two subscribing Witnesses. 1

WILLIAM T. MCGINNIS. i

Witnesses:

DAVID A. BURR, J oHN A. ELLIS.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5014981 *Oct 14, 1986May 14, 1991Prelich John GExercising devices using magnetic resistance
US5040787 *Jan 29, 1990Aug 20, 1991Brotman Eric MExercise apparatus
US5256121 *Aug 19, 1991Oct 26, 1993Brotman Eric MAuxiliary magnetic weights
US5348522 *Dec 4, 1992Sep 20, 1994Brotman Eric MAuxiliary magnetic weights and method of using same
Classifications
Cooperative ClassificationA61N2/02