US300462A

US300462A - Spindle bolstee

Info

Publication number: US300462A
Authority: US
Publication date: 1884-06-17
Anticipated expiration: 1901-06-17

Description

(No Model.)

J. R. GRAY.

SPINDLE BOLSTER.

No. 300,462. Patented June 17, 1884.

UNITED. STATES PATENT @rrrcs.

JAMES It. GRAY, OF AYER, ASSIGNOR TO GEO. DBAPER 8t SONS, OF HOPE- DALE, MASSACHUSETTS.

SPlN DLE-BOLSTER.

SPECIFICATION forming part of Letters Patent No. 300,462, dated June 17, 1884.

(No model.)

2" 0 aZZ whom, it may concern.-

Be it known that I, JAMES 12-. GRAY, of Ayer, county of Middlesex, State of Massachusetts, have invented an Improvement in SpindleBolsters, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts.

This invention relates more especially to the construction of the bolster placed in the bolster-case, the said bolster being composed of two or more sleeves tapered or made conical in the direction of their length, the taper being preferably from end to end, and produced. preferably, by the reduction of the external surface of each of the said sleeves, thus leaving between the outside of theinnermost sleeve of the series and the one next outside of it, and between the outside sleeve and the inte rior of the bolster-case, wedgeshaped tapering spaces, the wider portions of the said spaces being alternately at difierent heights, or first opposite the lower and then opposite the upper ends of the said sleeves, whereby the said sleeves are free to yield or move to a limited extent in any direction radially when acted upon by the spindle as the latter moves to seek its true center of rotation, the said loosely-held sleeves constituting a compound bushing, taking up and receiving the blows of the spiudle-blows caused by unequal loading and high speed of rotation.

I do not broadly claim a compound bolster, or one made of several concentric sleeves placed in an oil-chamber of a bolster-case closed at its bottom.

The drawing represents in elevation a spindle having on it a sleevewhirl, the said whirlbolstei', bolster-case, and stop and nut being in section.

The spindle A, its sleeve-whirl B, the bolster-case G, rail D, and nut E are and may be all as usual, the bolster being closed at its bottom and chambered to receive the oil, which will be applied or supplied thereto in any usual manner, but preferably automatically,

as in the so-callet Rabbeth spindle. The bottom of the band-groove in the whirl will preferably be at about the center of the bushing, or midway between its ends.

The bolster is composed of two tapering sleeves, a b, one surrounding the other. The. sleeve (4 is bored to fit the spindle; but from its upper enddownward, as shown, it is tapered. The bore of the sleeve bis equal in diameter to the external diameter of the inner sleeve at its largest part, and externally it is tapered from one to its other end, as described, of the sleeve a; but the sleeve 1) has its reduced or thin end uppermost, while sleeve a has its reduced or thin end down. Arranging the sleeves a b in this way leaves spaces 0 d between the parts, as shown in white, so that the sleeves constituting the bolster are free to yield to the pressure of the lower end of the spindle as the same wanders on its end support to seek its true center of rotation. The bolster-case closed at its bottom serves as an oil well, and the oil between the independent sleeves constituting the bolster acts to form a yielding packing. The tapering sleeves are provided with elongated holes to receive a pin or projection, f, fastened to the bolster-case and extended into the said holes, the said projeetion acting to restrain the said sleeves from 7 5 rotation with the spindle, but permitting the said sleeves to slide as the foot of the spindle wanders on its step.

I claiin The spindle bolster-casapin or projection, combined with the compound bolster, composed of two or more tapering sleeves adapted to receive oil in the tapering oil-receiving space between them, substantiallyas set forth.

In testimonywhereof I have signed myname 8 5 to this specification in the presence of two subscribing witnesses.

JAMES R. GRAY.

\Vitnesses:

Geo. W. GREGORY, W. H. SIGsToN.