US377435A - Oil-cup - Google Patents

Description

OIL GUP.

Patented Peb. '7,1888f1 Fl GJ.

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' FIGB.

m@ my Atty.

I 1NITED STATES PATENT (DFFICE.

. JAMES McNAUGHToN AND ADAM BARDsLI-iv, or B RAINERD, MINNESOTA.

OIL-CUP.

SPECIFICATION forming part bf Letters Patent No. 377,435, daten Fbrqary 7, 1888.

Application filed September l, 1887. Serial No. 248,542. (No model.)

To @ZZ whom, may concern:

Be it known that we, JAMEs MGNA'UGHTON and ADAM BARDsLEY, both of Brainerd, in

the county of Grow Wing and State of Minnesota, have invented a certain new and usen om'ize the construction of the appliance, as

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well as to facilitate the adjustment of the feed and obviate derangement or accidental variation thereof in service.`

To these ends our invention, generally stated, consists in an oil-cup having an elastic bridge which exerts a constant pressure upon the feed-spindle and acts to maintain the same in any desired positionof adjustment.

VThe improvement claimed is hereinafter fully set forth. Y

In the accompanying drawings, Figure lis side view in elevation of an oil-cup embodying our invention; Fig. 2, a vertical central section through the same; Fig. 3, a plan or top view with the cap and feed-spindle rej moved; and Fig. 4, a vertical central section f showing another form of cap.

In. the practice of our invention we provide an oll-cup the body 1 of which is ordinarily cylindrical, but which may be of lany other preferred form, and .which is provided at the bottom with a central threaded stem or boss, 2, for attachment to the portion of the engine or other machine to which it is to be applied.-

A feed-passage, 3, for the delivery of the lubri cant extends through the stem 2 and through an internal socket, 4, on the base of the cup, being outwardly tapered toward the top of the socket 4 correspondingly with the lower end of a spindle orneedle-feeder, 5, by the adj ustnlentv of which relativelyv to the'feed` passage the supply of lubricant to the,y latter is regulated as desired.`

, The spindle 5 carries a head or hand piece, 6,(npon its upper' end, by which it may be rotated, and is lprovided with an external screw-thread, 7, below" the head, toy engage a corresponding internal thread on the oil-cup,

in order to effect its vertical'movement when rotated. As heretofore constructed it has been usual to provide the spindle withajamnut to insure its retention in adj ustedvposition, thus involving an element of'additional cost and additional 'manipulation in adjustment.I Under our invention the spindle engages and is held, when adj usted, by an internalY screwthread, 8, formed in an elastic bridge, 9, which extends across the upper portion of the cup,

and by the clamping pressure which yit exerts through the thread 8 upon the spindle, maintains the same in any position in which it may be set, and effectually prevents it from being j arred loose in service, thereby assuring the continuance and uniformity of the feed. The

bridge 9 is split or divided by a central trans- I verse slot, 10, cored in the casting, so that its central portion constitutes two Ahalf-bosses, which, When threaded, form half-nuts, vand the necessary degree ofelasticity-isimparted by slightly` springing it apart by a wedge inserted in the slot l0 and drilling and tapping out theV central hole while the Vhalf-bosses are thus forced apart. The spindle being then prop-- erly fitted,the wedge is Withdrawn andthe tendency of thehalf-nut to spring back,fby

theelasticity of the metal of the bridge, to

the position of the bosses as loriginally formed induces and maintains a compression upon the spindle, which obviates the necessity `of a sup,-

plemental fastening device and holds the spindle firmly in 'position when adjusted, without preventing its rotation by hand when required to vary the degreeof feed. The cup is, asin the ordinary construction, closed at top by a` cap, 11, screwed thereon; or, when applied to guides, a sliding cap, as shown in Fig. 4,7may,

yif preferred, 'be employed.

'-We are aware that oil-cups having a rod-A feeder held in position byfrictionalcontact within the contracted end of an inclosing-tube have been'heretofore known, as Well as oilcups in which they upper end of the spindle is heldv and steadied by bent arms or elastic wires bearing aty their ends against the body, and We therefore disclaim, broadly,the interposition of an elastic element between the feeder yand the body of the cup.

We claim as our'invention and desire to secureby Letters latent- 1. Inan oil-cup, the combination of abody` spindle or feeder externally threaded to eu- 1o.

gage the half'nuts of the bridge, substantially as set forth.4

JAMES MONAUGHTON. ADAM BARDSLEY.

lvitnesses: Y B. M. DE LAMBERT,

C. E. TAYLOR.

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