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Publication numberUS684688 A
Publication typeGrant
Publication dateOct 15, 1901
Filing dateMar 29, 1898
Priority dateMar 29, 1898
Publication numberUS 684688 A, US 684688A, US-A-684688, US684688 A, US684688A
InventorsMax Herz
Original AssigneeMax Herz
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Exercising-machine.
US 684688 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

No. 684,688. Patented Oct. l5, 190i.

M. HERZ. EXERCISING MACHINE.

(Application filed Mar. 29, 1898.)

(" 0 Model.)

UNITED STATES PATENT OFFICE.

MAX HERZ, OF VIENNA, AUSTRIA-HUNGARY.

EXERCISING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 684,688, dated October 15, 1901. Application filed March 29, 1898. Serial No. 676,585. (No model.)

To ctZZ whom it may concern.-

Be it known that I, MAX HERZ, a subject of theEmperor of Austria-Hungary, residing at Vienna, in the Province of LowerAustria, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in Exercising-lvlachines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked there on, which form a part of this specification.

Mechanico-therapeutical apparatus such that the patient has to perform a definite and measurable amount of work by overcoming resistances in certain movements are objectionable, because the intensity of this work does not vary during the prescribed movement in accordance with the variation of the capacity of the muscles for work, as the part of the body which exerts the power changes its position by the movement. Thus the forearm which in one part of its movement is extended in another part is bent inward on the elbowjoint and in other positions of the muscles and joint different exertions of power are required to effect like results. The laws according to which the'actions of the joints and muscles vary in exerting power have hitherto been based only hypothetically on theoretical considerations and experiments on animals, and mechanico-therapeutic apparatus have been constructed in accordance with these laws.

The improvements forming the subject of the present invention have for their object to avoid the objection above stated and to insure that in working with such apparatus during the whole movement the muscles shall be exerted in accordance with their momentary tension or pulling force.

I have determined empirically the actual variations of the pulling force in human beings, and the resistance in my apparatus can be altered exactly according to these variations. This may be effected in various ways. In all cases the load (the resistance) is caused to act upon an intermediate link or element the movement of which due to the motion of that part of the body which is exerting power prod uces a compensating alteration leverage. Such intermediate elements are ca ms or their equivalents, cams, cam-wheels, grooved cylinders, and the like.

In the accompanying drawings, Figures 1 and 2 are respectively a side and a front elevation of an apparatus according to my invention for mechanico-therapeutical treatmentv of the arm. Figs. 3, 4, 5, and 6 show modified arrangements of parts of the apparatus.

A is a standard or frame, on the upper portion of which a shaft a, with a crank-handle O, is mounted, the shaft carrying the compensating intermediate element, which is a cam a or unround disk capable of rotation. A lever 61, pivoted on the frame A andloaded by a weight e, is connected by a cord, chain, rope, or strap 1) to the periphery of the cam a. By shifting the weight e along the lever cl the work performed by turning the crankhandle 0 can be varied as desired. It, for instance, the work consists in turning the crank c in the direction of the arrow, Fig. 1, so raising the weight 6 by moving the forearm at the elbow-joint, the radii of cam a, corresponding to the various angular positions of the forearm, are determined empirically, so that the effort always remains the same. Instead of a weighted lever, Figs. 1 and 2, weights e, Fig. 3, such as metal disks, may be employed, these being suspended in number corresponding to the desired work on a cord, chain, or rope fastened to the periphery of the cam a.

Fig. 4 represents an arrangement in which the weights e are on a rack 12, which is pressed by a spring or weight against the periphery of a toothed cam a In the arrangement shown in Fig. 5 the weighte takes the form of a roller mounted on a leverf and pressing on the periphery of the cam 66'.

In the form of the apparatus partly shown in Fig. 6 the cam a is replaced by a cylindrical drum a in which is cut ahelical groove g of varying depth. The loaded lever 62 is connected by a cord 1), fastened in the groove.

In order that when the drum a rotates the cord 1), notwithstanding the helical form of the groove,- may always remain vertical, the v shaft a has a screw-thread a of the same pitch working in the bearing a, so that the shaft as it rotates moves also lengthwise.

I claim- 1. An exercising-machine, comprising a suitable frame, a lever pivoted thereto, a weight adjustable on said lever, and a crankoperated irregular-faced cam adapted to lift the Weight and whose radii vary in accordance with the capacity of the muscles for work, substantially as set forth.

2. An exercising-machine, comprising a suitable frame, a crank journaled therein, a

grooved cam on said crank whose radii vary in accordance With the capacity of the mus- 15 cles, an adjustable weight moved by said cam, and means for causing axial movement of the crank and grooved cam, substantially as set forth.

In testimony that I claim the foregoing as 20 my invention I have signed my name in presence of two subscribing Witnesses.

MAX HERZ.

\Vitnesses:

HENRY O. CARPENTER, CHAS. E. CARPENTER.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2783044 *Jul 28, 1953Feb 26, 1957Sbarra Dominic GregoryOrthopedic exercising machines
US3558130 *Jun 6, 1968Jan 26, 1971Franklin C AndersonExercising device using pendulum weight and pulley system
US3563542 *Jul 18, 1968Feb 16, 1971Wellman James MArm exerciser
US3573865 *Oct 2, 1968Apr 6, 1971Paramount Health Equip CorpWeight shifting mechanism for exercising
US3856297 *Mar 19, 1973Dec 24, 1974J SchnellFrictional type exercising device
US3905599 *Jun 29, 1973Sep 16, 1975Martin S MazmanVariable resistance exercising device
US3912261 *Jul 12, 1973Oct 14, 1975Sr Lloyd J LambertExercise machine
US3953026 *May 22, 1975Apr 27, 1976Stokely William RArm wrestling exercise machine
US3998454 *Sep 17, 1974Dec 21, 1976Jones Arthur AForce receiving exercising member
US4176836 *Jun 21, 1977Dec 4, 1979Randy CoyleVariable resistance exercising apparatus and method
US4200279 *Apr 5, 1978Apr 29, 1980Lambert Lloyd J JrLeg extension, leg curl, hip, thigh, back and buttocks machine
US4240626 *Nov 8, 1978Dec 23, 1980Lambert Lloyd J JrAbdominal waist machine
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US4722522 *Jan 15, 1987Feb 2, 1988John LundgrenExercise machine
US4799670 *Jun 12, 1987Jan 24, 1989Neil WilliamsonExercise apparatus
US4978119 *Oct 27, 1989Dec 18, 1990Hull Martin PExercising device for simulating athletic movements
US5135452 *Jun 22, 1990Aug 4, 1992Arthur JonesApparatus for testing and/or exercising muscles of the human body
US5230680 *Mar 17, 1992Jul 27, 1993Wu Hong ChiTorque variable exercising apparatus
US5286243 *Jun 11, 1991Feb 15, 1994Lapcevic Thomas GExercise device having a variable resistance curve
US5312309 *Mar 8, 1993May 17, 1994Fox Charles LWrist exerciser
US5575743 *Mar 3, 1995Nov 19, 1996Medx CorporationMethod and apparatus for exercising adductor muscles
US5575744 *May 12, 1995Nov 19, 1996Medx CorporationAbductor exercise machine
US5762585 *Dec 18, 1996Jun 9, 1998Medx 96, Inc.Machine and method for exercising and/or testing muscles
US5833585 *Jun 28, 1996Nov 10, 1998Medx 96, Inc.Method and apparatus for exercising muscles
US6036624 *Jan 23, 1998Mar 14, 2000Technogym S.R.L.Physical training apparatus, particularly for the training of the shoulder rotators
US6132343 *Jan 30, 1998Oct 17, 2000Eze; Obi WalterPhysical conditioning apparatus
US6283899Jul 24, 1997Sep 4, 2001Richard D. CharnitskiInertial resistance exercise apparatus and method
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US7922635Mar 8, 2001Apr 12, 2011Nautilus, Inc.Adjustable-load unitary multi-position bench exercise unit
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Classifications
Cooperative ClassificationA63B21/0615