US1011136A - Compression axle-lubricator. - Google Patents

Description

H. D. STELLE & W. E. BAXTER. COMPRESSION AXLE LUBRIGATOR.

APPLICATION FILED NOV. 19, 1910 1,011,136, Patented Dec.5, 1911.

W I! v HERBERT D. S TELLE AND WILLIAM E. BAX'IER, OF LOS ANGELES, CALIFORNIA.

COMPRESSION AXLE-LUBRICATOR.

Specification of Letters Patent.

Application filed November 19, 1910. Serial No. 593,246.

I Compression Axle-Lubricator, of which the following is a specification.

An object of this invention 18 to provide a lubricating device by which the bearing between an axle and a wagon wheel or the like can be lubricated in 'a superior manner andwithout leakage of the lubricant or permeation of the wooden hub or axle by the lubricant. 4

A further object is to so construct the lubricator as to thereby fix the wooden hub to themetal box of the wheel and to hold the hub in fixed relation to the metal parts connected therewith without danger of the hub becoming loose.

The accompanying drawings illustrate the invention in the form at present deemed most desirable.

Figure 1- is a perspective view of the newly invented lubricator as applied in awagon wheel and-axle, a fragment only of the wheel being shown. Parts are broken to expose interior construction. Fig. 2 is ting the compression head. Fig. 5 is a dea plan section practically on line a2 w Fig. 1. Fig. 3 is a perspective view of the cup detached. Fig. 4 is an elevation omittail, of the hub, box, cup and compression head detached from each other; fragments only of the hub and box are shown. Fig. 6 is a section of another form in which the grease duct is bored through the nut.

The hollow wooden hub 1 is counterbored at its outer end and inside the counter-bore near the main bore a thin practically cylindrical cleft 2 is cut, thus forming around the outer end of the main bore of the 'hub a short thin wooden band 3 and at the outerend of the hub a thick practically cylindrical collar 4:.

The metal axle-box 5 is mounted in the usual way on an axle-spindle 6 which'is threaded at its outr end to receive the mm 6 which holds the axle-box on the spindle.

The combined oil-cup and hub-fastener comprises two coaxial cylinders 7, 8.- The smaller one of said cylinders forms a sleeve slightly thicker than and of'nearly the same radius as the cleft 2 and has a wedge-like intermediate web 10 to fit upon the outer end of the collar i internally screw-threaded as at 11 to receive a screw-threaded compres' sion head 12 which may be turned by a wrench, not shown, and screwed into the n ess from the shoulder to the .tip so that when driven into the recess in the hub it acts as a wedge to force the inner band 3 Patented Dec. 5, ram.

. tip 9. Said cylinders are connected by an 1 against the box and the outer collar 4:

against the collar band '14, which encircles the end of the hub.

In practice, the wood of the hub being perfectly seasoned and dry, the cup is driven into place by a hydraulic press or other means exerting a pressure of three thousand pounds, more or less; and when thus driven home it is not only efiectually fixed in place by frictional contact with the walls of the cleft, but it also fixes the wooden part of the hub positively to the box and also to the collar band, thus to prevent possibility of becoming loose and preventing seepageof oil around the box into the hub.

\Vhen the nut 6 is screwedhome on the end of the axle to contact with the axle-box a solid partition or closure between the chamber of the cup and the interior .of the box is thus formed and this is pierced by a thin' duct to form a lubricant way 15 between the grease chamber in the cup and the interior of the box 5. y

In some instances, the lubricant way extends directly through the spindle from the outer end thereof to a point inward beyond the screw-threaded portion as indicated at 15 in Fig. 2. In other instances, a hole 15- may be bored through the solid part of the nut from the outer to the inner face of the nut to a point adjacent the shoulder 16 ofthe spindle, and the spindle at this point 'may be slightly chamfcred so as to allow a is unimpaired and a very fine hole, the bore of which may be as small as can loe conven iently bored will be sufficient to admit the lubricant to the box, thus to lubricate the axle.

By boring the hole through the solid part of the nut it is possible to locate the hole at such part of the nut that when the nut is screwed home the'hole will be at the bottom of the axle, thus insuring the application of the lubricant to the axle with a minimum amount of lubricant to the'cup.

In any instance the arrangement of the lubricant Way through the solid part of the partition formed by the axle and the nut between the cup and the box enables the lubricant to be applied to the spindle below the top thereof.

In practice when the wheel is in place and the'nut screwed home, ,a charge of semifiuid' lubricant, such as hard grease or equivalent thereof, is put inside the lubricant cup and the compression head is then screwed in place to apply sufficient pressure to the lubricantto force a portion thereof into the box to efiect the required lubrication. Said head may be screwed in slightly from time to time as may be required to force the lubricant into the space inside the box.

W'e claim The combination with a metal axle-box, a spindle in the box and a nut on the end of the spindle to retain the box on the spin- .dle; of a hub mounted on the box and provided at one end with a thin hollow practica-lly cylindrical band around the box and a thick hollow cylindrical collar outside said band, therebeing a narrow annular cleft becontact with the outer and inner walls of the cleft; and a screw-threaded compression head screwed into the threaded cylinder,- thus forming a closed chamber containing said nut; there being an oil way between the interior of the threaded cylinder and the interior of the box. v

In testimony whereof, We have hereunto set our hands at Los Angeles, California, this 11th day of November, 1910.

HERBERT D. STELLE. WILLIAM E. BAXTER.

Inpresence of JAMns R. T WNSEND, L. BELLE RICE.

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