US 3685824 A
A training hurdle comprising a pair of legs pivoted to form an "X", with feet at the lower ends of the legs and pins at the upper ends of the legs received in openings in a crossbar. The bar has a plurality of openings and the legs are adapted to be pivoted to different angular positions for adjustment of the height of the crossbar. The bar is adapted to fall off the pins when struck by a hurdler.
Description (OCR text may contain errors)
United States Patent Quinn [is] 3,685,824 14 1 Aug; 22, 1972 1 1 TRAINING HURDLE  Inventor: Governor V. Quinn, East St. Louis,
 Assignee: Three-Line Research and Development Company, Granite City, 111.
 Filed: March 10, 1971  Appl. No.: 122,832
 US. Cl ..272/59 C, 108/118, 119/29, 248/ 164  Int. Cl. ..A63k 3/04  Field of Search ..272/59 C; 119/29; 108/112, 108/115, 118, 134; 248/164, 188.2, 188.6,
 References Cited UNITED STATES PATENTS 201,328 3/1878 Chamberlin ..272/59 C 600,100 3/1898 Tong ..108/115 753,930 3/1904 Stafford ..182/140 1,044,128 11/1912 Brook ..272/59 C 1,378,613 5/1921 Putman ..248/432 1,724,215 8/1929 Moran..l ..248/164 Squire ..272/59 C 1,982,934 12/1934 2,827,116' 3/1958 Zalovcik .;272/ 9'C 3,024,022 3/1962 Goyette "272/59 C 3,107,091 10/1963 Jenkins...,.., ..272/59 C 3,384,367- 5/1968 Baum ..272/59 C FORElGN PATENTS OR APPL1CAT1ONS 59,391 12/1941 Denmark ..248/164 I 576,848 5/1924 France ..248/432 916,580
1/1963 GreatBritain .....-l08/l18 Primary Examiner-Richard C. Pinkham Assistant Examiner-Richard J. Apley Attorney-Koenig, Senniger, Powers & Leavitt  ABSTRACT A training hurdle comprising a pair of legs pivoted to form an X, with feet at the lower ends of the legsand pins at the upper ends of the legs receivedin openings in a crossbar. The bar has a plurality of openings and the legs are adapted to be pivoted to different angular positions for adjustment of the height of the crossbar. The bar is adapted to fa11 off the pins when struck by a hurdler.
6 Claim, 4 Drawing Figures TRAINING HURDLE BACKGROUND OF THE INVENTION This invention relates to the field of athletic equipment, and more particularly to a novel hurdle which is useful in the training of novice hurdlers.
To run the hurdle races successfully in competition, it is necessary for the hurdler to acquire a facility in striding over the hurdles. He must learn to step over the hurdles rather than interrupt the rhythm of his running stride by jumping over them. His legsmust be generally horizontal as he passes over the hurdles, and oriented along the line in which he is running. To avoid loss of energy, distance and time, he must clear the hurdles by as narrow a margin as possible.
The acquisition of skill at striding over hurdles is often a difficult and frustrating experience for the novice hurdler. It may also be a hazardous experience since the novice hurdler is prone to strike the hurdle crossbar with the foot of his leading leg or the foot, thigh, shin or knee of his trailing leg, thus knocking the hurdle over and often upsetting himself in the process. Many novice hurdlers are injured in this manner every year.
Hurdles of adjustable height are known in the art which allow the novice to acquire his basic form with the hurdle set at a low height and then progressively increase the height of the hurdle to competition level. Such a hurdle is shown, for example, in Brook US. Pat. No. 1,044,128. This type of hurdle affords some reduction in the probability of injury to the learner but does not insure against it. If he misjudges the increase in hurdle height which his extent of practice will allow him to safely negotiate, the novice hurdler may be tripped up by a conventional adjustable height hurdle with consequences similar to those suffered if he had tripped over a standard competition hurdle. There has, therefore, been an unfulfilled need in the art for a training hurdle of adjustable height which will not itselfbe upset or upset the hurdler when his leading foot or any part of his body strikes the crossbar during practice.
SUMMARY OF THE INVENTION It is an object of the present invention, therefore, to provide a training hurdle of adjustable height which is adapted for safe and effective use by novice hurdlers. It is also an object of the present invention to provide such a hurdle which will not be upset nor upset the hurdler when the hurdle crossbar is struck by the hurdlers foot or other portion of his body. It is a further object of the present invention to provide such a hurdle whose crosspiece is kicked off if struck by a portion of the hurdlers body while he is passing over the hurdle.
Briefly, a hurdle of the present invention comprises a pair of legs of generally equal length with means interconnecting the legs intermediate their ends for their disposition in the form of an X with the legs at various angles to one another for varying the height of the X. Each leg has a foot at its lower end for supporting the X" in an upright position on a track, and at its upper end each leg has a pin projecting generally at right angles to the plane of the leg and in forward direction with respect to the mode of setting up the hurdle on a track. The hurdle has a crossbar having at least one opening therein adjacent one of its ends extending transversely to the length of the crossbar for receiving the pin on one of the legs and a series of openings adjacent its other end spaced at intervals lengthwise of the crossbar, each extending transversely to the length of the crossbar for receiving the pin on the other leg, with the crossbar readily slidable off the pins in said forward direction when struck by a hurdler. Other objects and features will be in part apparent and in part pointed out hereinafter.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a trimetric view of the hurdle from its reardrawings.
DESCRIPTION OF THE PREFERRED EMBODIMENTS I In accordance with the present invention, a hurdle is provided which can be used to safely and effectively train novice hurdlers. Adjustable in height, it may be set at a relatively low height while the hurdler is learning basic form, and progressively increased in height as the hurdler gains experience. Should the hurdler understride as he attempts to pass over the hurdle and strike the crossbar with any portion of his body, that crossbar readily slides off pins at the top of supporting legs of the hurdle, and falls to the ground without tripping up the hurdler or otherwise obstructing his progress. Thus injury to the hurdler is avoided. This prevents fear from distracting the hurdlers training efforts and promotes more rapid development of hurdling skill. I e
As illustrated in FIG. 1, the hurdle comprises tubular metal legs 1 and 3 pinned together by an interconnecting pivot bolt 5 to form an X for support of a hurdle crossbar 7. Pins 9 and l 1 at the upper ends of legs 1 and 3, respectively, extend at substantially'right angles to the legs in a forward direction with respect to the mode of setting the hurdle up on a track. These pins are conveniently formed by bending the upper ends of each tubular metal leg over into a horizontal orientation displaced approximately from the longitudinal centerline of the leg (see FIG. 2). Feet 13 and 15, constituted by integral U bends in tubular legs 1 and 3, with one side of the U bend extending generally rearward and the other generally forward, stabilizethe support structure against tipping.
Crossbar 7 has a plurality of pairs of openings 17 extending transversely of its length in which the pins 9 and 11 are slidably engageable (see FIG. 2). One opening of each pair is spaced a predetermined distance to the left of a point on or near the center of length of crossbar 7 and the other opening of the pair is spaced an approximately equal distance to the right of that point. By engaging pins 9 and 11 in a pair of openings such as indicated at 17a in FIG. 1 close to the center of length of the crossbar as shown in FIG. 1, the hurdle may be adjusted to a relatively large height. Conversely, the hurdle may be adjusted to a relatively low height by engaging pins 9 and, 11 in a pair of openings 17b employed in one side of the crossbar to engage pin 9, for example, and a plurality of openings employed at the other end, for example, to engage pin 11.
.To lock legs 1. and 3 in a given relative angular disposition, with pins 9 and 11 spaced from each other a distance corresponding to the spacing of a given pair of openings l7,'a height adjustment lock is provided. This lock is shown in FIG; 3 and is constituted by the aforesaid pivot bolt and a nut 19 threaded on the free end thereof. By tightening nut 19 on pivot bolt 5, legs 1 and 3 are clamped together and locked in position. Nut 19 has a handle '21 attached thereto to facilitate tightening and loosening it.
FIG. 4 illustrates an alternative form 13a, a for feet 13 and 15. The foot construction shown in FIG. 4 consists of a short length of tubing welded to the lower end of the support leg in the form of a tee. Other variations in designof feet 13 and [Swillbe obviousto those skilled in the art. It will besimilarly apparent that legs 1 and 3 can be constructed of angle-shaped members,
channels,or other shapes rather than tubular. Tubular construction is preferred, however, since pins 9 and 11 and feet 13 and 15 may be easily integrally formed therefrom.
Crossbar 7 may be fabricated from a strip of wood, as
the drawings suggest. Alternatively, a length of tubular metal having a diameter somewhat larger than the cross sectional dimensions of pins 9 and 11 may be drilled to provide openings 17 and serve as the crossbar. Other constructions of the crossbar will occur to those skilled in the art.
In use, the hurdle is set up with pins 9 and 11 facing forwardly down the track. Crossbar 7 is guided onto pins 9 and 11 at the pair of openings 17 corresponding to the height at which the hurdler wishes to practice.
The height adjustment lock 19 is tightened and the hurdle. is ready for a practice session. As he gains experience, the hurdler can adjust the height of the hurdle progressively upward by mutually rotating legs 3 .and 5 to movepins 9 and l 1 to pairs of openings closer to the center of length of crossbar 7. If his foot or other 4 portion of the hurdler s body should strike the crossbar during a practice session, thebar does not trip him but simply slides ofi pins 9 and 11 and falls to the ground.
In view of the above, it will be seen that the several objects of theinvention are achieved and other advantageous results attained.
As'various changes could be made'in the above constructions without departing from the scope'of the invention, it is intended that all matter contained in the I above description or shown in the accompanying drawings shall be interpreted as illustrativeand not in a projecting generally at right angles to the plane 'of the legs and in forward direction inrespect to the mode of setting up the hurdle on a track, and a crossbar having at least one opening therein adjacent oneof its ends .ex-
tending transversely to the length of the crossbar for 7 receiving the pin on one of the legs and a series of openings adjacent its other end spaced at intervals lengthwise of the crossbar each extending transversely to the length of the crossbar for receiving the pin on the other leg with the crossbar readily slidable off the pins in said forward direction when struck by a hurdler.
2. A hurdle'as set forth in claim 1 wherein each leg is formed of a tubular metal rod bent at one end constitutin'g its upper end to fonn the respective pin.
3. A hurdle as set forth in claim 2 whereinthe interconnecting means comprises a pivot extending through the legs.
4. A hurdle as set forth in claim 3 wherein the pivot is a bolt having a nut threaded thereon for clamping the legs in various positions of adjustment.
5. A hurdle as set forth in claim .1 wherein the cross- 1 bar has a series of said openings adjacent'its said one end.
6. A hurdle as set forth in claim 2 wherein each rod is Y j bent at its other end constituting itslower end to form the foot with the foot extending both rearward and forward.
It i I! P04 050 UNITED STATES PATENT OFFICE 5 69 CERTIFICATE OF CORRECTION Patent NO- ?.685,8 2 Dated August 22 V1972 Inventor(s) Governor V- Q inn It is certified that error appears in the abOve-identified patent and that said Letters Patent are hereby eorrected -asshownbelow: v
The name of the asslgnee should read Three-hine Research and Development 00., Inc." not "Three-Line Research and DevelopmentComnany".
Signed and sealed this 9th day of January 1973;,
EDWARD M.PLETCHER,JR. ROBERT GOTTSCPLALK Attesting Officer Commissioner of Patents