US871444A - Bung-bushing. - Google Patents

Description

No. 871,444. PATENTED NOV. 19, 1907. G. H. RIOKE.

BUNG BUSHING.

APPLICATION FILED FEB. 20, 1906.

UNITED STATES PATENT OFFIGE.

GEORGE I-I. RIOKE, OF CINCINNATI, OHIO, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE MILLER BU-NG BUSH COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

Specification of Letters Patent.

Patented Nov.,19, 1907.

Ap lication filed February 20.1906. Serial a. 302.105.

T all whom it may concern:

Be it known that I, GEORGE H. RIOKE, a citizen of the United States, residing at the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Im rovernents in Bung-Bushings, of which the ollowing is a specification.

The object of my invention is to produce a cheap, simple and efficient bushing for bung or tap holes in beer kegs and barrels.

Beer kegs and barrels belon to that class of cooperage, known as tig t packages and are made up of thick, heavy staves and thick expensive heads, held together by heavy steel hoops. At its bilge the keg is rovided with a bung hole. This hole is tted with and rotected by an iron band or ferrule called a ush or bung bushin The stave into which this-bushing is placed. is

called the bung stave. It is usually a se lected stave, being the best in the ackage,

inasmuch as this stave is weakene by the Y bung hole. These bung staves often crack around the bushing allowing gases to escape from the'keg, entailing loss and inconvenience, as the mntents are spoiled and thekeg must be repaired. This cracking is more common in kegs on which the hoo s have I together; this strain is transmitted to the been re-pulled, as the hoops, being pu led farther down on the eri hery of the keg to take up shrinkage, pu ls tie staves more tightly wood around the bung bushing and as the Wood around the threads has no lace to go, it lifts on rises, thus weakening t 's oint 1n the stave; but in my bush the threa s being far apart and forming pockets, the Wood between the threads is wider and the threads are wider and the "threadsdo not ofier'the same amount of resistance as they do in the case of the ordinary bung bushing, thus the wood can force into the pockets and be accommodated, and thus will not lift or rise, keeping the stave in the normal position.

My invention consists essentially in providing several series of artial screw threads around the periphery o the bung bush, one series of partial screw threads overlapping or passing the ends of the other series, so that where they overlap, the thread is unbroken and close just as the thread in the ordinary screw bung bushing but at the points where they do not overlap, the space between the is formed between them.

one third of the periphery 'of the bush.

. ig. 3 is a sectional view of the bush taken at line 11 of Fig. 2, part of the stave being shown in section. the bush.

I provide series of partial screw threads around the periphery of the bush, each series being independent, the partial screw threads of one series overlapping the partial screw threads of the adjacent series at their ends, so that where they overlap the screw threads are close together just as in the ordinary screw bush, but throughout the rest of their length, the threads are far a art and a pocket n the resent instance, I show three series of s ort screw threads, thus there arethree sets of-overlappin parts and three sets of Wide parts or poc cets.

The bush is formed of ring ferrule or band a, carrying at its top a flange a. The bush Fig. 4 is a bottom View of is widest at the top and tapers towards the bottom.

One series of artial screw" threads is marked 1) and itsa j acent series b '6 These partial screw threads each run around about The oints where the partial screw threads overap each other are designated by the letter 0, and the points where the screwthreads are far apart and form pockets are marked'rl.

The threads have the ordinary shaped cutting edge and on each side of said cutting edge, some distance back from the cutting point are provided with continuous shoulders or auxiliary cutters d; these cuttersd assist.

drawing forming.

in forcing the wood up against the adjacent screw threads and into the pockets d. Thescrew threads are preferably on an incline as is ordinarily the casein screw threads on bun bushings.

T e space between the partial threads where they overlap is not deep, but is formed about like the screw threads now used, so

that the threads will sink into the Wood all the way and at these points make an absolutely tight joint, so that leakage of any kind is prevented; the wood is also ti ht up against the base of the threads around the pockets, the pockets being present for the purpose of receiving the wood which is forced asunder when the threads are digging their way into the wood.

The bush is screwed into the bung hole in the bung stave d the lowest threads of one series first cutting the way into the wood and moving downward, the next highest thread of the adjacent series follows in its path and thus one follows in the path of the one before it and below it, the bush always of course, going further down in the bung hole, until it has been screwed home and the flange o fits-tightly against the bung stave; in this operation the screw threads no not chew, break or sliver the wood, as the shoulders or auxiliary cutters force the wood into the pockets d in the wide part between the threads, where it is preserved in a natural and unbroken condition. The tight fit and cut of the threads at the joint where the threads overlap is also relieved by the wood being squeezed. back toward the pockets (l, and inasmuch this space is not long and continuous, but short, the wood is not broken and torn.

It will be readily apparent that my bush can be screivedinto the wood without serious damage and that the wood is left in such a condition that the heat from the pitching machine spray tube and the incanevince descent rod for removin the surplus pitch will not disturb it or wea zen it; and further that the repulling of the hoops will not.

affect it inasmuch as the wood can find a home and will not be ground and lifted, thus the bung stave will he saved and great expense in cooperage saved and the weakest part of the keg or barrel be made asinv'ulnerable, as the rest of the package.

Of course I may use as many sets or series of screw threads as I desire, two, three four or more. I may form the threads as far closely together, and the space between the.

threads where they do not overlap recessed to form pockets for the wood, as set forth. Signed at Cincinnati, Hamilton county,

.Ohio, this 12th day of February A. D. 1906.

1 GEORGE H. RICKE.

'Witnesses Y "Karin STREHLI,

Cnnrsrrnn SOHAUL.

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