US1528321A - Sectional shaft for golf clubs and the like and method of making same - Google Patents

Description

Mar. '3, 1925. I 52 321 H. K. B. DAVIS, JR 1 sz-jcnomu. SHAFT- FOR GOLF CLUBS AND THE LIKE AND METHOD OF MAKING sma Filed Ju 1y 12, 1923 Patented Mar. 3, 1925.

UNITED SATES PATENT orrics.

HARRY K. B. DAVIS, JR, OF HOLYOKE, MASSACHUSETTS, ASSIGNOR TO THE SWING- RITE CO. INC., OF PROVIDENCE, EHOIDE ISLAND, A CORPDRATION OF RHODE IS- LAND.

SEGTIONAL SHAFT FOR GOLF CLUBS AND THE LIKE ANDJVIETHOD OF MAKING SAME.

Application filed. July 12,

To all whom it may concern:

Be it known that I, HARRY K. B. DAVIS, 512, a citizen of the United States, and resident of llolyolre, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Sectional Shafts for Golf Clubs and the like and Methods of Making Same, of which the following is a specification.

My present invention relates to improvements in the construction of bamboo shafts designed more particularly for golf clubs and the like.

The invention aims to secure such a shaft made up of sections in such a manner that provision is made for any inequalities in the sections, and in which surplus glue when assembling the sections may be forced inwardly to the center of the shaft and, therefore, will be prevented from accumulating on, the exterior surface of the shaft.

The invention further aims to provide a construction where the sections of the shaft fall just short of extending to the center, whereby there will be a certain release of torsional stress in the action of play, and a leeway will be allowed for atmospheric changes, resulting in a shaft which will maintain its straight condition and have more permanency in its glued joints.

With these various objects in view, the invention includes the novel article and method of making the same as hereinafter described, and defined by the appended claims.

The invention is illustrated in the accompanying drawing, in which The figure is a perspective View of a suf ficient portion of a club shaft to illustrate the invention.

Referring by reference characters to this drawing, the c ub or othershaft, is shown as comprising a plurality of sections or strips 1 of wood preferably of split bamboo, which are of segmental shape in cross section and are laid side by side with the grain of the wood running lengthways of the shaft so that when a plurality of these sections are assembled they form a substantially circular rod or shaft having a central longitudinal opening or passage 1, which is provided by making the segments of a thickness less than the length of the trans verse radius of the completed shaft Prior 1923. Serial No. 651,134.

down by the wrapping in contact with its neighboring strip or strips to insure perfect contact of the contiguous glue-coated surfaces, and in position so that the outside of the handle will be truly cylindrical. The central opening permits a radial adjustment of the sections to insure perfect contact of the adjacent surfaces whether or not a soft core should be positioned in this center. This opening also allows for the reception of any surplus glue which may be forced into the channel to permit of perfect seating instead of trapping this surplus or any bunches which may be contained therein and so preventing a perfect seating. again, by receiving the surplus glue this openings also prevents this surplus from being squeezed out of the periphery and thereby causing the wrapping to adhere to the outer surface of the rod or shaft to interfere with its ready removal.

I have also found that by providing the shaft with a hollow center, there is a release of the torsional stress in the action of play, and also there is a leeway allowed the bamboo in atmospheric changes, that increases the permanency of the glued joints and holds the shaftstraight.

By the term hollow sectional bamboo shaft I mean a shaft in which the sections of bamboo are of a. thickeness slightly less than the transverse radius of the completed shaft even though the hollow portion may contain a filling of glue or a material softer than that of the bamboo sections.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that 1 reserve the privilege of resorting to all the mechanical changes to which the device is susceptible the invention being defined and Then 7 limited only by the terms of the appended claims.

Having thus described my invention, what I claim is A hollow shaft for golf clubs comprising a plurality of assembled sections of split bamboo glued together, each section having the grain of the wood running longitudinally thereof and being of segmental form in cross section, the thickness of said segments being slightly less than the length of the transverse radius of the completed shaft,

the said sections when assembled forming a central longitudinal bore providing space into which the inner edges of said sections may be forced during assembling, whereby the sides of each section are firmly seated in engagement with the sides of contiguous sections, said bore being provided with an unfilled space of sufficient volume to also receive excess glue.

In testimony whereof, I afiix my signature.

HARRY K. B.-DAVIS, JR.

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