US1118674A - Axle spindle lubricator. - Google Patents

Description

J. OLSEN.

AXLB SPINDLE LUBRICATOR.

APPLICATION HLED Amma, 1914. f

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AXLE-SPINDLE LpBRIcAroR.

Specification of Letters Patent. Pam-)1113911 Nor, 1914,

Application filed April 23, 1914. Serial No. 833,929.

T0 aZZ 'whom it may concern.'

Be it known that I, JOHN OLSEN, a citizen of the United States of America, residing at Ames, in the county of Story and State of Iowa, have invented certain new and useful Improvements in Axle-Spindle Lubricators, of which the following is a specification.

My invention relates to improvements in force-feed lubricators for dead axle spindles on which the bearing boxes of vehicle wheels are mounted, and the objects of my improvement are, lirst, to provide means to normally exclude dirt, dust or sand from every part of the grease container; second, to provide a telltale whereby the quantity of vavailable lubricant in the cup may be estimated at sight or accurately measured without opening up the container; and third, to mount the grease cup in the wheel-retaining nut or axle-nut by an oil-tight connection. These, and other minor objects, hereinafter incidentally stated, are attained by the mechanical structure illustrated in the accompanying drawings, in which- Figure l is a vertical longitudinal section of the whole device including the box and hub mounted on the spindle of the dead axle and the operating wrench inserted; F ig. 2, a top view with the hub and bearing box removed from the spindle.

In all of which views similar reference numerals refer to like parts.

The ordinary axle-nut as here used is shaped with a longitudinally thickened base l supplemented by an inwardly disposed` bearing boss 2 to supply the requisite length of internally-threaded base to securely seat the nut on the outer shouldered threaded end 3 of the spindle. A polygonal outwardly disposed extension 4, to take the usual setting wrench, is supplemented by the further cylindrical extension 6 to give the required length; the whole extension is shaped to form an outwardly opening, concentric, internally-threaded chamber, to receive and seat the open end of the externally-threaded grease-cup.

The grease cup is of cylindrical form, except the outer exterior polygonal portion 17 for engagement by a wrench. It is triply sealed in its seat connection to the axlenutz-its inwardly disposed mouth end 18 fitted against the base of the nut, its threading in the seat chamber of the nut, and its -intermedial collar 19 fitted against the outwardly disposed mouth end of the seat chamber. 'Ihis prevents any possible exudation of the compressed lubricant through the joint connecting the grease cup with the nut. 1

The outwardly disposed bottom or head of the cup has the inwardly standing tube 20, disposed axially in the cup and its bore continued outwardly through the center of 'the head. And the curved wall of the cup is internally threaded from the mouth toward the head.

An externally threaded piston 21 is fitted to the internal thread of the cup, to be revolved therein and travel forth and back endwise by turning in the cup. A piston stem 22 extends outwardly from the center of the cupped face of the piston to closely it revolve and travel endwise in the smooth bore of the inwardly standing tube on the the operating wrench, by which the piston is turned to force the lubricant through the ducts tothe bearing surfaces or to retire the piston toward the khead of the cup for a new charge of lubricant.

The Vpiston stemand the inwardly standing tube are of such lengths as to interlap at all positions of the piston in the cup, and thereby retain the grease cup always closed against vsand or dirt. To give a length of piston stem facilitating the required interlap in the tube, the piston-head is cupped reversely to the grease-cup,-as shown in Fig. 1. The retracting of the outer end of the piston stem from the outer end ofthe bore of the tube indicates the depletion of and the available quantity of lubricant in the cup. This is accurately gaged by the index mark 25 disposed on the shank of the wrench, to coincide with the outer face of the head of the cup when the piston is turned inwardly to its limit.

I claim:

1. A force feed grease-cup, comprising an internally-threaded cup, "an inwardlyestanding axial tube on the bottom or head ,of thek cup and having its bore contiiiiied' `oti"4 Wardly throughy Seidl bottom or head,\a.,pe ripherally-threaded piston to engage the'in- .Copies of this patent may be obtained'for ve cents eavcih, by addressing thje-. Commissioner of Patents,

-ternal thead of thecup, and@ pistol; .s teni i6 dispesedoutwardly infsaid tube-andi having an engiilr recess in its oterend.

In testimony whereof Ihaveaixed my signatre "i' presence of two Witnesses.

l -JoHN OLSEN'.1

QWmssese WILLIAM L. ALLAN, J. A. CAMPBELL.

` Washington, D. C.

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