US275050A - Louis keller - Google Patents

Description

(No Model.)

L. KELLER.

JOINTEI) GUN ROD.

No. 275,050. Patented Apr. 3,1883.

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UNITED STATES PATENT OFFICE.

- --LOUIS KELLER, OF NEW YORK, N. Y.

JOINTED GUN-ROD.

SPECIFICATION forming part of Letters Patent No. 275,050, dated April 3, 1883.

(No model.)

10 all whom it may concern:

Be it known that I, LOUIS KELLER, a citizen of the United States, and a resident ofNew York city, in the county of New York and State of New York, have invented certain new and useful Improvementsin Jointed Gun-Rods, of which the following is a specification.

Figure l is a sectional view of the castmetal tips as heretofore made. Fig. 2 is a sectional view of the cast-metal tips, showing the wooden sections in position and put together as heretofore. Fig. 3 is a sectional view of the improved sheet-metal tips separated and without the wooden rod-sections. Fig. 4 is a sectional view of the improved sheetmetal tips as applied to the ends of the wooden rod-sections.

The drawings are larger than the actual size of the gun-rods and tips, the better to illustrate the invention.

Prior to my invention the several sections ol'jointed gun-rods have been united by means of cast-metal tips fastened to the ends of the sections. These tips are objectionable for the following reasons: They are expensive because, first, they have to be cast; second, they require a considerable weight of'metal; third, after being cast they have to be turned up smooth internally andexternally before they can be applied to the rod-section. The most serious objection, however, is that the rods thus made are veryliable to break at the inner end of the tip at the places marked X X, 850., Fig. The cast- metal tips 1 and 2 are so thick that the rods 5 and 6 must be considerably reduced in diameter at the ends before they will enter the tips. Thus the shoulders formed at X X, &c., afford an objectionable fracture-point, this being the weakest point in the whole rod, and it is at this point that they usually break, as shown in zigzag lines. This liability to fracture is greatly increased by reason of the excessive strain brought to hear at this point because ofthe leverage consequent upon this construction of the tips, since the male thread 3 has 'to enter the female thread 4, as shown in Fig. 2,whereby the ends of the rods marked respectively X X are necessarily separated by the length of these threads, and also by the solid metal shown at 3.

My invention consists in making these tips ofsheet metal, as shown in Figs. 3 and 4, whereby I avoid the presence of the threaded projection marked 3.

a and b are the tips. I) is preferably about twice the length of a. The end of the rod.- section d enters the tip to until it rests against the bottom of it internally. The end of the rod-section (1 stops at about the center of the tip I). The male thread is cut in fine threads on the tip a, and the female in corresponding threads in the unoccupied part of the tip b. The tips may be fastened to the rods by pins 00 or in any other suitable manner. In the case of the tip a a pin may be passed through the end of the tip,if it has an end, being placed eccentrically, as at O. Ihave shown this tip as having an end or bottom in it. This is not necessary. .It may be a simple piece of tubing; but it should preferably be slightly tapered, since the threads on it will then more readily engage with the threads on b. 7

Among the benefits flowing from myinvention is incidentally the cheapening of thejoint, but more especially the fact that the ends of the rods are brought up into contact with each other, or substantially into such contact, and also that the sheet metal of which my tips are constructed is so thin that the wood of the rodsections is not cut away at all, for, if desired, these tips may be forced onto the end of the sections without reducing the wood at all. I prefer, however, to very slightly taper the end of the section (Z to correspond with the slight taper of the tip a, and the end of both sections may be turned off, if desired, sufficiently to make the metal flush, for such slight reduction will not materially affect the strength of the section. Thus by my improved tips the full strength of the wood of the rod-section is utilized and no fracture-point is afforded.

I do not claim such methods of uniting rods as are shown in the United States Letters Patent granted to Arthur V. Abbott, dated November 27, 1877, No. 197,509.

Having thus described my invention, I claim- As a new article of manufacture, a jointed gun-rod composed of wooden sections, on the ends of which are threaded sheet-metal tips so applied to the sections of the rod that when it is put together there will be but 1itt1e,if Signed at New York city, in the county of any, space between the ends of the sections, New York and State of New York, this 12th whereby substantially the full strength of the day of December,- A. D. 1882.

sections is retained and the leverage conse- LOUIS KELLER. 5 quent upon separation of the ends of the see- Witnesses:

tions avoided, substantially as and for the PHILLIPS ABBOTT,

purposes set forth. DAN B. BRUMMITT.

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