US1552442A - Javelin stick and method of making the same - Google Patents

Description

Sept. 8, 1925.

H. M. LUND GK AND METHOD OF MAKING THE AME Filed Jan INVENT /67Z7J/ W124 I ATTOR atented Sept. 8, 1925.

UNlTED STATES.

1,552,442 PATENT QFFIQE.

HENRY 1M. LUND, OF BROOKLYN, NEVT YORK.

A JAVELIN STICK AND METHOD OF MAKING THE SAME.

Application filed January 5, 1924. Serial No. 684,526.

To all whom it may concern:

Be it known that 1, HENRY M. LUND, a citizen of Norway, and residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Javelin Sticks and Methods of Making the Same, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to j avelin sticks and particularly to the method of manufacturing separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Fig. 1 is a side View of a javelin stick made according to my invention and with part of the construction broken away and in section.

Fig. 2 is a transverse sectional View, showing the first step in the making of my improved stick.

Fig. 3 is a cross sectional view of the stick formed from the structure shown in 2; and,

Figs. 4 and 5 are views similar to Fig. 3 but showing modified forms of construction.

In the manufacture of javelin sticks according to the present methods of procedure, a strip of hickory, ash, or other hard wood, is fashioned to form the shank of the javelin stick, and by reason of the fact that the shank of the stick is composed of a single piece of wood of the kind specified, it has been found in practice, that a javelin stick so made is readily subject to breakage. It is oftentimes experienced that a new javelin stick after it has been thrown one or two times by an athlete, will break, thus putting the athlete or athletic association to considerable expense in the replacement of broken javelin sticks.

The sole object of my invention is to so construct a javelin stick as to increase the strength and durability thereof, and in carrying my invention into effect, I provide as shown 1n Figs. 1 to 3 inclusive, two elongated and rectangular strips 10 and 11 of a suitable wood or combinations of suitable wood, such for example as hickory, ash, or i the like, and the strips 10 and 11 are placedv side by side and glued or otherwise joined together as shown at 12 to form an elongated bar 13 rectangular inform in cross section and composed of the separate'strips' of wood 10 and 11. a

The bar 13 when formed as above-described, is now fashioned by hand or'ina suitable machine to substantially circular formation in cross section as shown at 14: in

Fig. 3 of the drawing, and from the point 15 substantially centrally of the bar, said bar is tapered to a slight extent toward 'the end 16 thereof and 'to a greater extent toward the end 17 thereof as clearly shown in Fig. 1 of the drawing. The wood'portion or shank of the avelin stick is now made and is ready for-insertion int'o a metallio pointer or spear 18 having a tapered socket 19 into which the end portion 16ofthe' ja've 'lin stick is adapted to be placed and secured.

According to the present practice, the end portion of the javelin stick is secured to the pointer or spear by tacks, nails, rivets or the like, which renders the wood portion of the avelin stick weak, and subject to breakage in addition to the general weakness of the stick by reason of the method of its manufacture. In practice, I secure the tapered end 16 of my improved javelin stick to the pointer 18 by fashioning the pointed end 16 of the stick to provide a taper thereon which is larger in diameter than the diameter of the bore 19 in the pointer, when said pointer is under normal temperature.

In securing the parts together or the pointer 18 to the stick or shank thereof, the pointer 18 is heated in any desired manner to expand the metal thereof and when expanded the stick or end portion 16 is inserted intothe bore 19 and the pointer 18 is chilled in the usual manner, which automatically shrinks the metal of the pointer or returns it to normal position and the stick is thus rigidly retained in the her 19 of the pointer.

It will be understood that in the above operation, the pointer 18 is not heated to a degree sufficient to burn or char or effect in any way the wood of the stick or that portion thereof inserted into the bore 19 of the pointer. The shank of the javelin stick may be removed from the pointer by simply reversing the above operation; namely, first heating the pointer 18 until it has expanded sufliciently to permit of the extraction of the stick as will be apparent.

It must be borne in mind that the shank of the javelin stick or the wood portion of the stick is, at its largest diameter, approximately one inch, and by reason of the fact that the entire length of the! stick or the wood portion thereof is eight feet or over, it must be readily'understood that when the stick is composed of a single piece of wood, the same will readily break when subject to the strains which prevail in the sport, and by constructing the shank of the stick of two pieces of wood, and arranging the grains of the separate pieces to provide the greatest strength, it has beenv found in ac tual practice and experience that a much stronger javelin stick is produced and one which is very durable in use.

In Fig. 4: of the drawing, I have shown the shank of a javelin stick composed of three strips of wood 20, glued or otherwise secured together as shown at 21, while in Fig. 5 of the drawing, I have shown the shank of the stick composed of four inde pendent strips of wood 22 secured together as shown at 23. It will be apparent that the stick may be composed of two or more strips of wood of the sam grade of wood, or ofdifierent grades of wood, as the case may be, and while I have referred to spe- I limited to the specific shape of the avelin stick or the wood shank thereof herein shown and described, nor to the shape or construction of the metallic pointer herein shown and described, and various changes in and modifications of the constructionherein shown and described and the method set out may be made within the scope of the appended claims without departing from the spirit of my invention or sacrificing its advantages. I

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is V 1. The herein described method of manufacturing javelin sticks which consists in' fashioning the shank of the stick of two or mor independent strips of Wood, securing said strips together, fashioning said strips to produce a shank of the desired form, and securing a metallic pointer to one end of the shank formed from said strips by heating said pointer to expand the metal thereof to permit of the insertion of one end of the my invention I have signed my name this 2nd day of January 1924.

HENRY M. LUND.

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