US1130336A - Metal bush. - Google Patents

Description

E. J. RENKENBERGER.

METAL BUSH. I APPLIOA'TIOH FILED MAY a, 1913.

1,130,336. Patented M3112, 1915.

WTTE. s ra rns rarnr prion.

EDWARD J. RENKENBERGER, OF BUFFALO, NEW YORK, ASSIGI\TOR TO AMERICAN TOOL HANDLE COMPAN Y, OF BUFFALO, NEW YORK, A. CORPORATION OF NEW YORK.

METAL BUSH.

Specification of Letters Patent.

Patented Mar. 2, 1915.

Application filed. May 3, 1913. Serial No. 765,330.

To all whom it may concern:

Be it known that I, EDWARD JoI-IN REN- KENBERGER, a citizen of the United States,

residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Metal Bushes; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in metal bushes and it proposes a device which is especially applicable for use with wooden handles, such as the handles of clothes wringing machines, ice cream freezers, churns, and the like, but which of course has'a wide range of general utility.

The object of the invention is to provide a metal bush of simple and inexpensive character, which may be securely associated with the wooden handle or other part to be protected, which shall always have a tight fit within the opening of said handle or equivalent part regardless of any ordinary expansion thereof, and which may be fitted to the handle in a facile manner.

Having the above objects in view, the improved bush comprises a resilient sheet metal generally rectangular blank which is bent into the form of a ring and which has at one end thereof a wedge like projection and at its other end a recess to receive said projection to a greater or less extent when the blank is formed as a ring.

Embodiments of the invention are illustrated in the accompanying drawings where- 1n:

Figure 1 is a sectional view showing a wooden handle with bushes in accordance with the invention fitted thereto; Fig. 2 is a developed plan view of the bush blank; Fig. 3 is a sectional view thereof on the line 3-3 of Fig. 2. Fig. 4; is a sectional View showing one side of the bush as somewhat canted; Fig. 5 is an elevation of a bush of slightly modified construction, and Fig. 6 is a sectional view thereof, applied to a handle.

Similar characters of reference designate corresponding parts throughout the several views.

The improved bush is made from a geninserting it into the handle.

erally rectangular sheet metal blank 1, as shown in Figs. 2 and 3, and which is bent 1nto the form of a ring as shown in Fig. 1. That side of the blank which forms the outer surface of the ring is preferably provided with transverse flutings 2 or is otherwise roughened to insure that the bush shall securely grip the part within which it is fitted.

The blank 1 has at one end thereof awedge shaped projection 3, centrally disposed, and at its other end a recess 4 conforming to the projection 3 and preferably forming the terminal of a slot 5. When the blank 1 is formed into a ring the projection 3 engages in the recess 4 as shown in Fig. l. The projection 3 and the recess 4 are preferably located in line with the longitudinal center of the blank in order that the ring may be slightly canted should occasion require while The ring formed in the manner described, is driven into the bore of the handle or equivalent part under considerable pressure. The projection 3, engaging in the recess 4 causes the parts 6 and 7 at the sides of the slot 5 tospring outward to a slight extent. The outward springing of the parts 6 and 7 is, however, limited by the abutting engagement of the adjacent ends of the ring and in this way it is assured that the bush cannot be contracted beyond a certain minimum diameter. When the bush is driven into place, there will be a certain local compression of the wood in which the bush fits but in the event that the bore in which the bush is arranged expands so that the external pressure on the bush is relieved, the resilient parts 6 and 7 acted on by the projection 3 will cause the bush to expand proportionately and to remain in secure frictional engagement with the handle. The fact that the bush has a certain capacity for expansion so that it always remains in secure frictional engagement with the handle is important in view of the axio matic principle of practical mechanics that While a tight joint remains tight a loose joint rapidly becomes looser.

The frictional engagement between the bush and the handle prevents relative rotation of these elements under any ordinary circumstances. It may happen however that the presence of accumulated dirt or grit may cause the handle A to bind on the pin B and in such a case the corrugations 2 will prevent the handle from rotating on the bush.

The modified construction shown in Figs. 5 and 6 is the same in its general principles as the construction already described. In this modified construction the blank 1 has a rib or flange 8 at one side thereof, Which, when the blank is formed into a ring, serves as an end or thrust bearing for the handle, working in relation to the head 7) of the pin I3, and preferably has its inner face beveled or inclined as shown. In the embodi ment first described the projection 3 and the recess 4: are symmetrical. In the modified form the sides 3 and P of the projection 3 and recess 4 adjacent to the rib 8 are parallel to said rib in order that when said projection engages in said recess, the tendency will be to spread the blank on the wedge-shaped side of the projection, and the portion of the blank carrying the rib 8 and adjacent to the slot 5 may not be displaced and consequently that the rib may not be bent out of a straight line or out of a true plane. In other respects the construction shown in Figs. 5 and 6 is the same as the construction shown in the remaining figures. It will be apparent that the bushes, fitted at each end of the handle, protect the latter against wear, spacing the handle from the pin and rotating with the handle on said pin.

Having fully described my invention I claim 1. A bush comprising a blank to be formed into a split ring and having at one end thereof a projection and at its other end a recess to receive said projection, the latter having a wedge fit in the recess and the projection at one point having a width greater than the greatest width of the recess.

2. A bush comprising a blank to be formed into a split ring and having at one end thereof a projection and having at its other end a relatively narrow longitudinal slot terminating in an enlarged recess to receive said projection, the latter at its base having a greater width than the width of the recess and having a wedge fit in the recess.

3. A bush comprising a blank to be formed into a split ring and having at one end thereof a wedge like projection and having at its other end a recess to receive the projection and formed with a. narrow longitudinal slot extending rearwardly from said recess.

a. A bush comprising a blank to be formed into a split ring and having at one end thereof a projection and at its other end a recess to receive said projection, the base of the projection being of greater width than the mouth of the recess.

5. A bush comprising a blank to be formed into a split ring having one face thereof corrugated, the blank having at one end thereof a projection and at its other end a recess to receive said projection, the base of the projection being of greater width than the mouth of the recess.

6. A bush comprising a blank to be formed into a split ring, the blank having at one side a flange and at one end a projection and at its other end a slot terminating in a recess, one side of the recess and one side of the projection being beveled and the other sides substantially straight and parallel with the side flange, the base of the projection being of greater width than the mouth of the recess.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD J- RENKENBERGER.

Witnesses:

CHARLES L. BALLYWORK, GEORGE C. RENKENBERGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. C.

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