US748625A - lindsay - Google Patents

Description

N0 MODEL.

v PATENTED JAN. 5, 19014 T. J. LINDSAY.

SHAFT BEARIG. v i APPLIOATION FILED JUNE 26, 1901.

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F11/gig 60 6a Amm/VH PATENTBD JAN. 5, 1904.

T. J. LINDSAY.

SHAFT BEARING.

APPLIOATION FILED JUNE 26, 1901.-

2 SHEETS-SHEET 2.

-NO MODEL.

IN VENTUH UNITED STATES y atented January 5, Q.

PATENT OFFICE.

THOMAS J. LINDSAY, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF TO WILLARD I-IARMON, OF INDIANAPOLIS, INDIANA.

SHAFT-BEARING.

SPECIFICATION forming part of Letters Patent No. 748,625, dated January 5, 1904.

v Application iiled Tune 26, 1901. Serial No. 66,146. (No model.)

To all whom it may concern,.-

Be it known that I, THOMAS J. LINDSAY, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, haveV invented certain new and useful Improvements in Shaft-Bearings, of which the following is a specification.

The object of my said invention is to produce a box or bearing for shafts which shall io be provided with means for efficiently and evenly taking up the wear which may result from use, and thus provide a bearing especially adapted to heavy service and hard usage and to situations where even running t5 and therefore eXactness of fit are desirable.

A box or bearing embodying my said in ve`ntion will first be fully described, and the novel features thereof then pointed out in the claims.

Referring to the accompanying drawings, which are made a part hereof, and on which similar reference characters indicate similar parts, Figure lis a top or plan view of abox or bearing of the variety in question; Fig. 2, a central longitudinal vertical sectional view thereof as seen when looking in the direction indicated by the arrows from the dotted line 2 2 in Fig. 1; and Figs. 3, 4, and 5 transverse vertical sectional Views as seen when looking in the directions indicated by the arrows from the dotted lines 3 3, 4 4, and 5 5, respectively, in Figs. 2 and l. l

The main shell or body 51 of my improved bearing may be and preferably is formed as a single casting, as shown in most of the parts, as a box and a cap. I have shown this structure divided into two parts in Fig. 5; but in the other figures it is shown as a single structure, as Iprefer to make it. This structure is cored out in the casting and contains suitable chambers for the shaft, the box-linings, the lining-tighteners, and a supply of oil, all as shown in the drawings. It is mounted in any suitable manner, according to the use to which the shaft carried thereby is put.

drawings, although it may be made intwo' It is shown as adj ustably As is obvious, however, the method of mounting this box or bearing is to be varied in accordance with the requirements of the service which is to ber performed.

The construction shown is one which I have designed for use in large rotary pressureblowers and is according to my experience a superior form for the purpose.

The main shell or body 5l is first cast into approximately the form shown in the drawings and is then bored out first to a size adapted to receive the tapered sleeves and 61, constituting the lining-tighteners, and then at the central portion to a larger size -adapted to receive the sleeve-nut 62, which,

as best shown in Fig. 2, connects the tapered sleeves 60 and 61. The screw-threads by which these parts are connected are righthand screw-threads on one of the sleeves and the corresponding portion of the nut and lefthand screw-threads on the other sleeve and the corresponding portion of the nut, so that rotating the nut draws the sleeves together or forces them apart synchronously. The sleeves 60 and 61 are prevented from rotating by studs 63 and 64, carried by the body 5l, which enter grooves formed to receive them in said sleeve, as best shown in Figs. 2 and 5. Within the sleeves 60 and l6l is placed the box-lining 70. This box-lining may be of any suitable metal to form a bearing for a shaft, such metals as brass, bronze, and Babbitt metal being preferable. This lining is slitted nearly from end to end in several places in order that it may be compressed from time to time by the pressure applied by the tapered sleeves, and wear thus taken up and the bearing kept tight. The sections are, however, held togetherpand to position by small portions 71 at the ends, so that the ends of the linings are substantially in the form of continuous rings, the slits extending entirely through at not more than one place or point. Near the upper side, where the lining is cut away to receive the oil-elevating chains, fragments are left at the parts marked 72, (see especially Fig. 3,) so that the central parts above these points shall not be separated from the others. This box-lining is held from turning within the tapered sleeves by means of a stud 73, carried by one of said IOO sleeves and entering the groove in said lining, as is best shown in Figs. 2 and 5.

The lower portion of the body 5l, as shown, contains a large cavity for oil. Two oil-elevating chains 8O and 81 are carried by the shaft S, which runs in the bearing, and extend down into this oil-cavity, grooves being cnt through the lining part of the way around the shaft, as best shown in Fig. 4, to permit the chains to rest on the shaft and suitable vertical openings being likewise cut for the passage of said chains through the tapered sleeves containing the lining-tighteners.

The ends of the bore in the body 5l are closed by annular rings 90 and 91, as shown in Fig. 2, and any oil which works lengthwise along the shaft S is thus stopped before emerging from the bearing and caused to How back into the oil-cavity. While this particular lubricating means shown and described is considered particularly desirable for use with this invention, it does not form any part of each direction toward each end on the outside, correspondingly tapered sleeves surrounding the ends of said lining, a sleeve-nut connecting the adjacent ends of said sleeves and engaging therewith by right and left hand screw-threads, means for lubricating the bearing, and a suitable body in which said parts are mounted and carried,'substan tially as set forth.

2. The combination, in a shaft-bearing, of a body containing a bore for the lining and its compressing devices and a cavity for the oil, two tapered sleeve-like' lining-tighteners in said bore and provided respectively with right and left hand screw-threads upon their adjacent ends, a sleeve-nut correspondingly screwthreaded engaging with said liningtighteners, a compressible lining within said lining-tighteners, studs mounted in the body and engaging with said lining-tighteners to prevent them from turning, and a stud in a lining-tightener engaging with the lining and preventing it from turning, rotary movement of the lining and its tightener being thus prevented while longitudinal movement is permitted, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at' Indianapolis, Indiana, this 21st day of June, A. D. 1901.

THOMAS J. LINDSAY.

Vitnesses:

CHESTER BRADFORD, L. H. CoLvIN.

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