Wrist-developer and strength-tester.

Application filed May 13, 1308. Serial No. 432,753.

To all whom it may concern:

Be it known that I, Victor M; .del Valle y Zeno, a citizen of the United States, residing at San Juan, in the county of Bayamon, g Porto Rico, have invented certain new and useful Improvements in Wrist-Developers and Strength-Testers, of which the following is a specification.

This invention comprehends certain new 10 and useful improvements in. exercising appliances, and the invention has for its object a simple, durable and efficient construction of wrist developer and strength tester that may be cheaply manufactured and conven15 iently operated to develop the muscles of the forearm and wrist, as well as to indicate the strength of the person manipulating the device.

With these and other objects in view, as 20 will more fully appear as the description proceeds, the invention consists in certain constructions, arrangements and combination of the parts that I shall hereinafter fully describe and claim. .

For full understanding of the invention, reference is to be had to the following description and accompanying drawings in which:

Figure 1 is a_: perspective view of an exer30 cising appliance constructed in accordance with my invention; and Fig. 2 is a side elevation thereof.

Corresponding and like parts are referred to in the following description and indicated 35 in all the views of the drawings by the same reference characters.

Referring to the drawings, the numeral 1 designates the base of my improved exercising device, said base being formed of wood 40 or any other desired material or substance and being of any desired size, so long as it possesses the necessary stability when it is rested upon a table, desk, or other support.

designates a standard which is secured to 45 and which rises from the base 1. A wire 3 or the like is secured to the standard 2 at the upper end of the standard,' and extends downwardly at the rear, side of the standard and is secured at its lower end to the base j, 50 so as to brace the standard, as against forwardly acting strains.

An oscillating handle lever 4 is hinged at one end as at 5 to the standard 2 and is mounted to swing about a longitudinal axis 55 to the front of the standard. One or more contractile ^springs 6 are secured in a detach able manner as by hooks or staples 7 and 8 to the handle 4 and standard 2 respectively, two of these springs designated 6 and 6^a being shown in the present instance, but it is so understood that any desired number may be. employed, according to the relative strength of the person for whom the device is intended.

In order to indicate the development of 65 the muscles and to test the strength of the forearm and wrist of the operator a scale bar 9 is secured at one end to one side of the standard 2 and secured at its other end,.as by the-laterally projecting foot 10, to the base 70 1 in front of the standard. The scale bar 9 is graduated as shown, the graduations being scientifically tested, and the scale bar is formed with a curved slot 11 which receives an indicator or pointer 12 secured to one side 75 of the handle lever 4. In addition to its function as a scale, the bar serves as a brace : to co-act with the brace 3 in holding the standard 2, as against forwardly acting strains. 80

In order that the handle lever may lock after it has been tilted over away from the standard 2, so that the operator may read the indications, on the scale bar and test his strength without the necessity of holding. 85 the handle lev.er at the limit of its movement, I have provided a segmental toothed rack bar 13 which is pivotally connected at one end to the handle lever 4 and which is held for sliding movement by means of a 90 pin 14 projecting from one side of the standard 2. A spring pressed pawl is secured to the standard and is arranged for engagement with the teeth of the rack bar. In order to release the handle lever 4 it is only necessary 95 to disengage the pawl 15 from the rack bar 13.

In the practical operation of my improved muscle developer and strength tester, when it is used as an exercising device solely the 100 rack bar 13 is removed, and the hand lever is pressed up and down as many times as desired with either arm so as to develop the muscles of the forearm and wrist. In testing one’s strength, the rack bar 13 is secured in 105 place, so that it will catch the pawl 15 when the hand lever 4 has been tilted over as far as possible with the strength of the operator.