US311960A - Expander for expanding and securing metal bung-bushings into casks - Google Patents

Description

{No.Mndel.)

H. OOTTRELL.

BXPANDER FOR EXPANDING AND SECURING METAL BUNG BUSHINGS INTO GASKS.

No. 311,960; Patented Feb. 10, 1885 r I; Ca, I, 3

HERBERT OOTTRELL, OF NEWARK, NEW JERSEY.

EXPANDER FOR EXPANDING AND SECURING METAL BUNG-BUSHINGS INTO CASKS.

SFECIFIQATIQN forming part of Letters Patent No. 311,960, dated February 10, 1885.

Application tiled April 17, 1884. (No model.)

To AZ/Z whom, it 77mg concern.-

Be it known that I, HERBERT OOTTRELL, of Newark, in the county of Essex and State of New Jersey, have invented a new and useful Improvement in Expanders for Expanding and Securing Metal Bung- Bushings into Gasks. and for other purposes, of which the following is a specification, reference being had to the accompanying drawings, forming part of this specification.

' The principal object of my invention is to provide an expander which can be conveniently used by brewers or others for the purpose of applying and securing metal bung- I 5 bushings in barrels after the latter are finished, and for tightening such bushings in barrels wherein they have been previously applied, but wherein they have from any cause become loose.

The invention consists, principally, in the combination, with an external] y-screwthreaded expanding sectional mandrel and a core, of two differential]y-screw-threaded nuts, as hereinafter described, whereby a Very powerful pressure may be so brought upon the inner edges of a flanged metal bushing after the insertion of the latter into a bung-hole that the said edges'may be thereby turned outward and the bushingthereby caused to clamp the stave tightly around the inner edge of the bung-hole.

It also consists in certain details of construction, hereinafter described.

Figure 1 of the drawings is a side View, partly in section, of an expander constructed according to my invention, showing it in the 1 act of insertion into abung-bushing in a cask.

Fig. 2 is a similar view of the expander, but showing it in the act of expanding the bushing. Fig. 3 is an inverted plan of the same.

Similar letters of reference indicate corresponding parts in the several figures.

A is the central core, and B B are the expanding sections forming the principal parts 5 of the expanding sectional mandrel. The

sections B B, of which there are four represented, but of which there may be any other convenient number, combine to form a longitudinally-divided expanding shell sur- 50 rounding the central core A, the said shell having on the upper portion of its exterior a screw-thread, a, and on the lower portion of its exterior a flange, 1), the. upper face of which is cavetto-shaped, the other portion of its exterior between the cavetto and the screw-thread being slightly taper.

O and D are diiferentially-threaded nuts working one within the other. The inner nut, O. fits the screw-thread a on the exterior of the mandrel-sections and holds them together around the core A, the lower portion,

a, of which is made larger than the portion above, and slightly tapered upward, and has the interiors of the. expanding sections B B fitted to it. The upper end of the core is furnished with a broad head, cl, between which and the top of the nut O a spiral spring, 6, is placed around the core for the purpose of drawing the latter upward within the sections with a tendency to'keep them expanded by the conical or taper portion c of the core.- On the lower part of the core is a projection, f, which enters between two of the expanding sections 13 B, for purpose of enabling the mandrel to be turned by the core whenever desirable, as will be hereinafter explained. The thread of the external nut, D, and the corresponding male screw-thread, 9, provided for it on the exterior of the not C, have the same direction as the thread a on the mandrel and the corresponding internal thread of the nut O-that is to say, both are right-handed or both left-handed-but the thread 9 and nut D are of coarser pitch, the pitch of the thread a and the interior of the nut 0 being, say, one-tenth of an inch, and the pitch of the said thread 9 and the interior of the nut D being, say, Oneeighth of an inch. The external nut, D, forms the base of the expander, and is furnished on its bottom with teeth h h, to enterthe wood of the stave of a cask and keep the said nut D from turning thereon. The nut O is furnished with 1ever-handles O, by which to turn it within the nut D and upon the screw-thread a at the same time, the threads at and g then acting as a diiferential screw.

The expander is made to operate in the following manner: To prepare it for operation the nut D is run back on the screw-thread g,

and the screw-thread a is run back into the nut D, as shown in Fig. 1, and to prepare the cask G and bushing E for its operation the bushing is inserted into the bung-hole t t, to whichit fits snugly and beyond which it projects slightly, as shown at n n in Fig. 1, with its flangej bearing on the exterior of the cask. The core (1 is then pressed down by the operator Within the expanding sections B B of the mandrel, which are then allowed to come together sufficiently to allow the flange b to pass into the bushing, as shown in Fig. 1. The implenient'being then held by its handle 0, the mandrel is pushed down so that its flange b passes through the bushing, and the base or nut D brought down upon and over the flange of the bushing, so that its teeth h indent themselves into the wood of the cask sufficiently to prevent D from turning. The flange I) being through the bushing and the core liberated, the spring 6 forces the core upward and expands the mandrel-sections B so that their flange '2) projects laterally beyond the inner edge, a, of the bushing, and that the said sections press against the bushing with sufficient force to prevent the mandrel from turning. All is now ready for the operation, which is effected by turning the nut O by its handles 0 ma direction to make it move up within the nut D and upon the thread a, neither of which rotates. In this way the expanding mandrel is drawn up very slowly by the differential action of the screws, but made to exert a very powerful outward pressure upon the edgesn n of the bushing, which are expanded outward by the taper lower portion of the sections 13, and also both turned upward and outward, as shown at a n, Fig. 2, by the cavettoshaped upper surface of the flange b, and so made to clamp the edges of the bung-hole very tightly.

If, on the insertion of the implement in the bushing, as hereinbefore described, the flange Zr will not pass through the bottom of the bushing when the base or nut D comes down to the cask, the mandrel may be screwed down within the nut G by turning the core by -the mandrel to turn with the core.

may be shortened.

means of its knob d, the projections f cafi sing on the other hand, before placing the implement in the bushing the mandrel should have been set so low down in the nut G that the flange 12 passes farther than is necessary through the bushing, the said flange may be brought up to the bushing in a position of readiness to commence the expanding operation by turning the mandrel by means of the knob of the core. In this way the tedious operation of bringing up the flange to the bushing by the slow differential action of the two nuts is avoided and the process of expanding the bushing It may be here stated that the spring e is not absolutely indispensable to the apparatus, as the core might be held up by the hand during the insertion of the implement into the bushing; but the spring affords much greater convenience for maniputhreaded and flanged sections B B, of the core A, having a taper, c, the spring a, and thedifferentially-threaded nuts 0 and D, substantially as herein described.

3. The combination, with the mandrel-sections B B and differentially-threaded nuts 0 and D, of the core A, having a projection, f, to engage between the mandrel-sections, substantiallyv as and for the purpose described.

HERBERT COTTRELL.

\Vitnesses: I

FREDK. HAYNES, lVIATTHEW PoLLooK.

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