US1401476A - Gymnastic apparatus - Google Patents

Description

V. JORDAN AND 1. T. HOLMES.

GYMNASTIC APPARATUS.

APPLICATION FILED MAR. 2. 1921.

1,401,476. Patented Deu.27,1921.

.Z'I'yZ.

UNITED STATES PATENT OFFICE.

GYMNASTIC APPARATUS.

Application filed March 2, 1921.

To ail 10720112. it wag/"r021 0cm Be it known that we, Vrnon. Jenna): and JoHN Tonn HOLMES, citizens of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Gymnastic Apparatus, of wl'iichthe following is a specification.

The invention relates to that type of gymnastic apparatus specifically known as horizontal bars. The object of the invention is to provide an apparatus of this class which combines strength and lightness with simplicity of manipulation, and which may easily be positioned between two stationary parallel structures, as for example a door or window frame or two parallel walls, without defacing the surfaces thereof and without re uiring a permanentmeans of attachment.

eferring to the drawings:

Figure 1 is a front elevation of the new gymnastic apparatus positioned between the parallel surfaces of a door or window frame.

Fig. 2 is a front elevation, partially in section, of the horizontal bar and supporting blocks.

Fig. 3 is a face view of one and Fig. 4 a face view of the other supporting block.

Fig. 5 is a partial section of a modification of the bar.

The bar 10, for example, of wood, is provided at one end with a metal rod 11, one end of which is rigidly inserted in any suitable manner in bar 10, the other end of said metal rod 11 being provided with a screw thread 11*. The other end of bar 10 is provided with a rod 12, rigidly inserted therein, the exterior end of said rod 12 terminating in a spherical head 13.

A supporting block 17 has rigidly attached thereto a. metal plate 18, which is provided with a central threaded perforation 18 for the reception of the threaded end 11 of rod 11. Look 17 is also provided with a perforation 19 registering with the perforation 18, through which the threaded end 11 of rod 11 can extend as far as required.

A block 20 is likewise provided with a rigidly attached plate 21, having a central recess 21 for the reception of the spherical head 13 of rod 12 inserted in bar 10.

Both blocks 17 and 20 are provided, on the surfaces opposite plates 18 and 21, with resilient pads 22 of rubber, felt or the like, the number of which is immaterial. When the Specification of Letters Patent.

Patented Dec. 27, 1921.

Serial No. 449,046.

bar 10 is in position pads 22 contact directly with the parallel stationary surfaces and prevent defacelnent thereof.

Integral with rod 12 is a plate 21 provided with a perforation through which a pin may be inserted into one of a number of re cesses provided concentrically about the central recess 21 in plate 21 of block 20.

The apparatus is positioned in the following manner: The threaded rod 11 of bar 10 is screwed into the threaded plate 18 and perforation 19 of block 17 as far as required, and the spherical head 13 of rod 12 attached to the opposite end of bar 10 inserted in the central recess 21 of block 20. The assembled bar and blocks are then placed at the desired height between the parallel surfaces of the permanent structure, for example, two parallel walls of a building or a door or window frame, as illustrated on Fig. 1, 27 and 28, and bar 10 is rotated in the reverse direction to force the supporting blocks 17 and 20 to expand against the stationary parallel surfaces or walls, whereby the bar assemblage is firmly supported in the desired position. The resilient pads 22 contact directly with the permanent parallel walls and prevent defacement thereof.

l Vhen the apparatus is positioned as desired. pin 25 is inserted through the perforation of plate 24 provided on rod 12 and into one of the depressions or recesses 26 of plate 21, for the purpose of preventing rotation of bar 10 during use.

The bar assemblage is easily detached from its operative position by removing pin 25 and screwing the threaded end of bar 10 in plate 18.

The constructional details of the new gymnastic apparatus is not limited to those above set forth. For example, instead of being of wood and having the metal rods 11 and 12 attached thereto, bar 10 may be of metal, as shown on Fig. 5, where 110 designates the bar and 111 the threaded end integral therewith. Likewise, instead of per forations 2st and 26 and pin 25, use may be made of any other suitable retentive mech anism for preventing rotation of bar 10 during use.

We claim:

1. In a gymnastic apparatus, a horizontal bar, one end of which terminates in a screw thread and the other in a substantially spherical head, an element readily removable from one end of; the bar and having a threaded perforation for the reception of said screw thread, and another element readily removable from the other end of the bar and having a substantially spherical socket for the reception of said head, the assemblage of said bar and said elements being;- adapted to be frictionally and detachably se cured between the walls of a substantially permanent structure.

2. In a gymnastic apparatus, a horizontal bar and means. for detachably and frictionally supporting said bar between the walls of a substantially permanent structure, said supporting means comprising a block having a threaded perforation for the reception of a threaded end of said bar and a block having a substantially spherical socket for thereception of a substantially spherical head on the opposite end of said bar, where by said bar is rotatably actuated in said blocks in one direction against said Walls, and means provided at one end of said bar to prevent its further rotation or rotation in the opposite direction when said bar is in the desired position.

In a gymnastic apparatus, an extensible horizontal bar adapted to be detachably positioned. between substantially parallel structures, one end of said bar being screw threaded and the other provided with a substantially spherical head, a block having a threaded perforation for the reception of the threaded end of the bar, another block having a substantially spherical socket for the reception of the substantially spherical head on said bar and a plurality of recesses concentric with said socket, a perforated plate attached to the spherical head of said bar, a pin adapted to be inserted through the perforation of said plate into a recess in said block when the bar is adjusted in position between the parallel structures, and resilient pads provided on said blocks.

In testimony whereof we afiix our signatures.

VIRGIL JORDAN. JOHN TODD HOLMES.

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