US712634A - Exercising apparatus. - Google Patents

Description

No. 7|2-.634. Patented Ndv. 4, I902.-

R. ARUNSTEIN. EXERCISING APPARATUS. (Application med June 18, 1902'.

(No Model.)

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NITE STATES PAT T OFFrcE.

EXERCISING APPARATUS.

SPECIFICATION forming part of Letters latent No. 712,634, dated November 4, 1902. Application filed June s, 1902. Serial No. 1 2,149. on model.)

rado, have invented certain new and useful Improvements in Exercising Machines, of which the following is a specification.

The object of the invention is to provide a simple, light, and compact apparatus for drillzo striking practice.

The invention is illustrated in the drawings on the accompanying sheet, in .which Figures 1 and 2 show the apparatus in its simplest form, Fig. 1 giving a longitudinal I5 cross-sectional View, Fig. 2 'a top view of the same, Fig. 3 giving a cross'sectional View of a bell attachment; Fig. 4, a diagram of an electrical appliance in connection with the apparatus; Fig. 5, a striking-hammer with} an-especial attachment for this purpose; Fig. 6, an enlarged cross-sectional view of the ham mer-handle.

In Fig. 1, A is the drill-holding block, being a casting of malleable iron or steel in the form of a hub with awide base-flange strengthened by a number of ribs running from the hub down to the base. 13 is the drill-steel, having a nut O on its lower end and a collarD in the middle. The impact of the hammer-blow which strikes the head of the drill-steel compresses the rubber washer E, which lies between the collar D and the block A. Thus the jar of the blow and its recoil is reduced.

The nut C keeps the drill-steel from jumping out of the block. The blockAhas a number of holes in its base-flange for the purpose of bolting it down to a foot-block F.

Fig. 3 shows a cross-section through the lower portion of a drill-striking apparatus The drill-steel B has a hole bored in itsend, into which hole a pin G is screwed. A small hole H is bored through the pin G. This hole can be reached with a nail or any other pointed implement through any of the openings 1, which are bored through A. By holding the pin G now with a nail inserted in the hole H and turning the drillsteel B itself G is screwed farther up or down, thus shortening or lengthening the reach of G. In the illustration the pin G is shown in contact with the bell K, which is held by the spring-steel L, which latter is fastened to the base of the block A. The rubber bumperE, Fig. 1, when not compressed keeps the steel 13 up high, so that the pin G is out of contact with the bell K, and it requires a blow heavy enoughto sufiiciently compress the bumper E before G is brought in contact with K to ring the bell. By regulating the length of the pin Gin the manner described we fix the force of the blow necessary to ring the bell.

Fig. 4 gives a diagram of the circuit formed by attaching an electrical appliance to the apparatus. M is the generator of the electric current, being either a galvanic battery or a frictional electric machine operated by the blow of the hammer itself in the manner of a blasting-battery or simply a switch connec tion with an incandescent-light current reduced in voltage by passing through a resist ance-coil. The positive pole (-1-) of the generator is connected,through the insulated wire N, to the drill-steel, the rubber sheet 0, on which the apparatus sits, keeping the current from grounding here. The negative pole is led down to the ground-plate P.

The striking-hammer Q (shown in Figs. 5 and 6) has a copper stripR running from the eye of the hammer down to the end of the hammer-handle, lying in a groove of the handle and fastened to it by small wood-screws. When now the hammer hits the head of the drillstecl, a connection is formed along the line N B Q R with the body of the striker, which, through its contact with the ground, forms a ground-wire for the return-circuit to the ground-plate P of the negative pole, as shown by the dotted lines in Fig. 4. The recoil of the blow bounces the hammer back instantly, thus breaking the circuit.

This exercising apparatus, being of simple construction, can be put on the market at a sufficiently low figure 'to be introduced for .home use as well as for public use in schools,

gym nasiu ms, or saloons. Being light and compact in form, it can be put down for use or moved out of the Way in an instant. Thus we open for the daily practice of the amateur anexercise which combines with the benefit of an attractive gymnastic exertion the trainsting through the use of the rubber bumper is still strong enough to leave the sensation of a back blow. As the drill-holding block is constructed of non-breakable material we need not be afraid of harming it if we should miss the drill-steel and hit the block instead, and so we may start right in hitting our heartiest blows. As we get better trained with continued practice and become surer of our blow we may assume a looser freer swing of the whole body, stand farther away from the drill-steel, and learn the slip of the hand in striking, by which slip we will ease off the jar of the recoil of the blow. \Ve must also learn to strike over either shoulder with equal skill, strike one, two, or three together on the drill, keeping perfect time with each other, and thus with continued practice become skilled sure-hitting hammersmen without having bruised anybodys hands during our apprenticeship, while without the use of this apparatus the driller who has to acquire his skill by striking on a steel held by his partners hand in a drill-hole has to answer for many a bruised hand during the learning, or, if he is afraid on this account to risk the free swing necessary, both for the cutting force of the blow and his own bodily ease, will never get beyond a stiff-handed poorly-cutting blow.

The apparatus can be bolted in any position whatever to a frame suitably constructed, so we may practice the various inclined blows, the miner has to learn to strike, as the lifter, the cut, the breast, and the back-hole, and the upper. The bell attachment adds a new charm to the exercise. The ringing of the bell Will record the straight-hitting heavy blows and these only, so we may contest for the best record during a striking pass. By

screwing back the bell-striking pin in the manner described we can always call for a heavier blow still, thus increasing the zest of the contest. By the connection of an electrical appliance to the apparatus we combine, with the benefit of a Wholesome muscle-developing chest-expanding exercise, the tonic effects of an electric treatment.

I now claim as new and desire to secure by Letters Patent- 1. In an exercising apparatus for drill-striking practice, the combination of a drill-holder A, being a non-breakable block of malleable iron or steel in the form of a hub with a wide base-flange and a number of strengtheningribs, the bore of the hub being small at the top and wider at the base, a drill-steel B with a nut Oand a collar D, and a rubber bumper E, substantially as described.

2. In an exercising apparatus for drill-striking practice the combination of a bell K fas-v tened by a spring L to the block A, an adjustable pin Gr screwed into the lower end of the drill-steel B, substantially as described.

3. In an exercising apparatus for drill-striking practice the combination of an electric generator M, being either attached to the apparatus or independent of the same, an insulated wire-circuit connection from the positive pole of the generator to the lower end of the drill-steel, the insulation of the drillholder by a rubber sheet 0, a circuit connection from the negative pole of the generator to the ground-plate Pand the copper strip R fastened to the handle of the drill-striking hammer substantially as described.

RICHARD ARONSTEIN. Witnesses:

CHRISTIAN O. SOHWERDT, BRANDER EVANS.

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