US80702A - Impeovement in centeifugal machines foe - Google Patents

Description

R. J. BARR.

Centrifugal Sugar-Machine.

No. 80,702. Patented Aug. 4.1868.

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ROBERT, J. BARR,- OF PHILADE PHIA; PENNSYLVANIA.

Letters Patent No. 80,702, dated August 4,,1868.

IMPROVEMENT IN GENTRIFUGAL MACHINES FOR FILTERING, DRAWING, AND DRYING.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, Bonner BARR, of Philadelphia, Pennsylvania, have invented an Improvement in Centrifugal Drying-Machines; andlI do hereby declare the following to be a full, clear,'ond exact description of the same.

My invention consists of a forked bar, having a'yielding bearing, and so secured adjacent to and bearing against the suspended shaft of a centrifugal drying-machine, that the gyration of the said shaft is prevented, while the ready introduction or removal of, the material to be dried is notinterfered with. v

In order to enable others skilled in the art to make and use my invention, I willnow proceed to describe its construction and operation, reference being bad to the accompanying drawing, which forms a part of this specification, and in which,

Figure 1 is a vertical section of my improved centrifugal drying-machine,

Figure 2 a plan view, and i v Figure 3 a perspective view of'a portion of my invention, drawn to an enlarged scale.

A is astationary cylindrical case,.which is suspended from the-ceiling, or otherwise supported, and B is a cylindrical-vessel with perforated sides, which is suspended within the case A by a vertical shaft, 0, the only bearing of the shaft being that to which a collar, a, near the upper end of the shaft, is adapted.

To the casing A is hinged a frame, D, and through cross-pieces c e ofthe latter passes a bar, E, forked at its inner end, which embraces the shaft G, and around the bar, between a shoulder on the same and the crosspiece 0, is c'oilcd a spring, {,the force of whicln and thecon'sequent pressure'of the bar upon the shaft, is regulated by a nut, z". 1 l

The opening in the cross-piece e, through which tlic barE passes, is wider than the bar, so that the latter can vibrate laterally to a limited extent, for a purpose described hereafter.

In the inner edge of the forked end of thebar is a dove-tailed groove or channel, y, filled with lignum-v vitae or other hard wood, which projects slightly beyond the edge of the bar,oand serves as a bearing for the shaft, (see fig.

In the centrifugal machines first constructed, for drying sugar and other materials, the shafts rested in steps and bearings which maintained them permanently vertical, heavy-foundations and a large amount of room 7 being required, while the machines, as well as the'buildings in which they were used, were subject to constant and destructive vibrations.

Most of these objections arev overcome by removing the steps and suspending the shafts, as above 1 described. The tendency of the shaft, however, to vibrate or gyratc at its lower and during its revolution, and when the material is not evenly distributed in the vessel B, renders necessary the constant services of an attend ant, who bears with a forked bar against the side of the shaft whenever the latter begins to gyrate.

By my above-described improvements the labor and expense of an attendant are avoided, the forked barE boating constantly against the shaft, and speedily reducing any gyration resulting from the vessel B being unevenly loaded, but yielding suiliciently, before the gyration is reduced, tovprcvent the violent shocksand vibrations which occur when an unyielding bearing is employed.

It shou;ld be understood that the forked rod is prevented from falling to a point below that shown in fig. '1 by lugs at a; on the side of the case A, which serve to support the hinged frameDJ It is during the time of charging the machine that the shaft is most liable to gyrate, and the forked rod most needed, and the latter being of inconsiderable width, and occupying but asmall space at one side of the machine, does not interfere with the operation of charging, while, after stopping the machine preparatory to removing the contents of the vessel B, the hinged rodand its frame can be readily thrown back out of the way,

as indicated by the dotted lines in fig. l. a V

Without limiting myselt'to the precise construction and arrangement of parts herein described, I claim as my invention, and desire to secure by Letters Patent- 1. A. forked bar, E, having a yielding bearing, and arranged adjacent to and bearing with its forked end against the suspended shaft of a centrifugal drying-machine, substantially as and for the purpose described.

2. Thesaid bar, secured in a frame hinged to the outer casing or other permanent part of the machine, for the purpose set forth.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

R. J. BARR.

Witnesses:

J OHN WHITE, 0. B." PRICE.

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