US296754A - Spindle-bearing - Google Patents

Description

(No Modal.)

J. EIL-BURN.

SPINDLE BEARING.

N.296,754. Patented Apr. 15, 1884.

lArnNr trice.,

JOHN KILBURN, OF LOVELL, MASSACHUSETTS.

"SPINDLE-BEARING.

SPECIFICATION forming part of Letters Patent No. 296,754, .lated April 15, 1884.

Application filed June 1S, 1883. (No model.)

ing thelateral bearing for itslower end, the saidv bolsterbeing contained in a bolster-case having a closed bottom and serving as an oil-well.,

Myinvention is an improvement on the class of spindle bearings represented in United States Patent No. 227,129, dated May Il, 1880;

and it consists in a bolster-case provided with an internal annular or circumferential groove and a bolster provided with notches, combined with a lockingring having projections to engage the notches ofthe bolster, and having ears to enter the said annular or circumferential groove of the bolster-case, whereby the said locking-ring serves to restrain the bolster from rotation with the spindle, and also from being lifted from the bolster-case by the lifting of the spindle. Y

Other features of invention will be hereinafter described, and pointed out in the claims at the end of this specification.

In this class of spindle-bearings referred to, the elastic or fibrous packing in practice tied to the foot-step and to the bolster is apt to be worn out by the rubbing of the bolster inside of it when the bolster moves with the spindle, and the said packing thus worn out is easily torn or twisted ofi", but by restraining the bol ster from rotation the diiiiculties are obviated. It is essential for the best results that the bol ster be so held that it will be free to yield in every direction as the foot of the spindle wan ders on its step to find its true center of rotation; -and to that end I have made the lockingring of such width with relation to the internal diameter of the bolster-case and the external diameter of the bolster as to provide for the necessary or desired movement of the top of the bolster.

Figure l represents in elevation a spindle and step and nut, and in section the sleevewhirl, step-rail, bolster, and parts in the bolstercase, the latter being partially in section; Fig. 2, a top view of only the` end oi the bolster-case; Fig. 3, a sectional detail of the interior of the bolstercase just below its upper end 5 Fig. 4, a top view of the bolster; Fig. 5, an enlarged cross-section of the bolster-case just above thelocking-ring, Fig. G, a detail of the cap removed; and Fig. 7 shows the lool;- ing-ring by itself.

The step-rail A, nut A', bolster-case B, spindle C, foot-step D, and elastic packing E are substantially as usual, and as in the said patent, except that I have provided the interior of the bolster-case, near its upper end,with, as herein shown, two short auxiliary or circumierentially-extended grooves, 2 8, which communicate with an'. intersecting groove, et, ei;-

ytended downward from the top of the bolster- The upper end of the bolster F is notched,-

as shown at 5, to be entered bythe projections 6 of the locking-ring G, the latter at its pe riphery having two lugs, 7. (See Fig. 7.) To

apply the ring G, so as to restrain the bolster F from rot-ation with the spindle, and also to keep the locking device down in engagement with the upper end of the bolster, l place two of the notches 5 of the bolster in line with the vertical or intersecting grooves 44, and placing the lugs 7 in the grooves 4, the ring is pushed down until its projections 6 enter the notches 5 in the bolster, and as the lugs 7 come opposite the grooves 3 the ring is partially rotated, causing the lugs 7 to enter the grooves V3, (see Fig. 5,) the projections 6 in engagement with the bolster partially rotating it, and the lugs 7 as they reach the ends ofthe short annularly or circumferentially extended grooves 3, are arrested, preventing any further rotation of the bolster in that direction, the direction being that ofthe rotation of the spindle. The

width of the ring is less than the distance be- 9 tween the inner wall of the bolsterLcase and the external diameter of the bolster, and this difference between the width of the ring and the space between the bolster and bolster oase affords room for such lateral movement of the ICO bolster as is desirable, and may be more or less. rlhis locking-ring is very simple, and may be made quickly and cheaply, and may be readily applied to old bolster-eases and bolsters now in use by simply providing the bolster with notches and the bolster-case with grooves 4 and 3, which may be done cheaply and quickly, using for the production of groove 3 a very simple milling-tool on a short shaft.

The cap f is liable to be thrown out of the bolstercase by the vibration of the spindle, and to overcome this objection I have provided the bolster-case with the two partial grooves 2 2, into which the lug 10 on the said cap is turned, after having` been moved down into the said groove 4.

The sleeve-whirl is marked H.

I do not broadly claim a pin or projection to restrain the rotation of the bolster, as I am aware that that is old.

I claimn 1. The bolster and the bolster-case, conibined with a ring located at the upper end of the bolster, the said parts being,` provided with notches an d projections, to enable the said ring to co-operate with the said bolster and case and restrain the rotation of the bolster in the said case, substantially as described.

2. The bolster-case provided with the groove 3, and the bolster notched at its upper end, combined with the locking-ring having lugs adapted to enter the grooves of the case, and proj ections to enter the notches of the bolster, to operate substantially as described.

3. The bolster case and bolster, combined with a narrow locking-ring adapted to hold the bolster and to be held by the bolster-case, the said ring being of less width than the space between the interior of the said case and the exterior of the bolster, substantially as described.

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

JOHN KILBURN. Vitnesses:

WM. F. DRAPER, GEO. W. GREGORY.

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