US1093472A - Grease-cup. - Google Patents

Description

E. H. PRESBREY.

GREASE CUP.

APPLIOATION FILED smmz, 191a.

1,093,472. Patented Apr. 14, 1914..

b runt 1 601 M in Edwa/dfi Prasray. g: 2 5 W Rife megs COLUMBIA PLANOGRAPN COnWASHINGTON. D. c.

EDWARD H. PRESBBEY, OF NEW YORK, N. Y. i

' can ass-cur.

Specification of Letters Patent.

Patented Apr. 1a, 1914..

Application filed September 2, 1913. Serial No. 787,652.

of the city of New York, borough of Man hattan, in the county and State of New York, have invented a new and Improved Grease-Cup, of which the following is a full, clear, and exact description.

This invention relates to lubricators 'or grease cups of the force feed. type, and has particular reference to an improved manner of mounting and operating the follower which serves to force the grease from the 'lliore definitely stated, the invention provides a base adapted to be secured adj acent.

a bearing, said base having a delivery tube, and means for quickly attaching thereto a cup filled with grease, special means being provided to prevent loss of said cup from the base or any tendency for the parts to rattle when in use. 7 p

The foregoing and other objects of the invention will hereinafter be more fully described and claimed and illustrated in the drawings forming a part of this specification in which like characters of reference indicate corresponding parts in all the views, and in which- Figure 1 is a side elevation of a preferred form of the invention shown as applied to a bearing; Fig. 2 is a vertical section of the grease cup complete with the parts in the position which they will occupy when the cup is filled with grease; Fig. 3 is a transverse section on the line 3-3 of Fig. 2, but on a larger scale; and Fig. 4 is a side elevation, partly in section, indicating the follower in an elevated position.

At a I show a grease cup adapted to be connected to any suitable bearing for a movable part, as shown at b. The device in cludes a cup proper c of substantially hollow cylindrical form but having its outer end closed and provided with any suitable means to facilitate rotation thereof, such means being indicated by milling at a. Said cup 0 is internally threaded as shown The inner end of the cup 0 is open for the introduction of the grease and is slightly beveled on its outer surface to facilitate the assemblage of the device.

. The base 03 is provided with a nipple d for connection with the bearing and is provided with an outwardly projecting flange al to receive the inner end of the cup 0.

The cup and flange are smooth where they cooperate with each other and are adapted V to be locked by means of a split spring ring 6. Said ring is seated in a circumferential groove f formed in the interior of the flange cl, and when the cup 0 is forced down into said flange, the beveled edge thereof forces the spring 6 apart so as to permit such introduction. "When the cup is forced inwardly suiiiciently far against the tension of a fiat spring g, the spring 6 will snap into a groove f extending around the cup 0 and registering with the groove f. Said spring ring, therefore, prevents any possibility of the cup 0 losing out of place or being withdrawn by any unauthorizedperson except as intended by the regular operation of the device. The spring 9 maintains sufficient tension upon the inner end of the cup to pre vent rattling of the parts 0 and (Z.

As above premised, the base d is provided with a central delivery pipe h in the 7 form of a hollow stem extending outwardly toward the outer end of the cup 0. Said tube 72, is preferably provided with a rib or key'h" and a follower h guided along said tube and prevented from rotation thereon by means of said rib. The follower is externally. screw threaded for direct cooperation with the thread 0 of the cup. With the follower shown in the position of Fig.' 2, the end of the cup with grease may be introduced directly into the base 61 until it engages the thread of the follower upon which it may be turned as, for instance, in a right hand direction, causing the follower to approach the closed end of the cup. During this movement of the cup it may be forced sufficiently far into thebase to cause the spring e to interlock the parts together. The grease may be forced from the cup through the tubular stem h until'the follower reaches the closed end of the cup when the rotation will be stopped. In order to remove the cup for refilling or other purposes, it must be turned in a reverse direction, causing the follower to be moved inwardly against the spring 9 which, serving as an abutment, will cause the unscrewing action to force the cup outwardly past the spring 0. The follower will then remain in such position until the cup is returned, as above described.

Because of the screw threaded engagement between the cup and the follower, leakage or loss of grease through such .0 loadedjoint is unlikely to occur. I find, however, that it is desirable to provide a flexible packing washer or gasket ?1 at the center of the follower for direct cooperation with the tube 71-. Said gasket may be secured in place by means of a metal washer '5.

Having thus described my invent-ion, I claim as new and desire to secure by Letters Patent 1. In a grease cup, the combination of a base having an outwardly projecting hollow stem and a surrounding flange, a cup adapted to be applied on the outside of said stem and fitted at one end within said flange, means to lock the cup and base together for normal operation, a follower movable longitudinally but non-rotatably along said stem, said cup and follower being screw threaded whereby the rotation of the cup will cause the follower to approach one end of the cup to force the grease from the cup: through said hollow stem, and a spring be tween the follower and the base, substantially as set forth.

2. In a geas'e cup, the combination of a base having an outwardly projecting flange, a cup having one end closed and the other end open, the open end being seated within said flange, means to permit rotation of the cup but prevent longitudinal displacement thereof from the flange, delivery means for the grease through the base, a follower within the cup and having screw threaded engagement therewith, and means connected with the base to prevent rotation of the fol lower due to the rotation of the cup and serving to cause the means normally holding the cup and base together to release the cup.

8. In a grease cup, the combination of a base having an outwardly projecting discharge tube and a concentric flange having a smooth interior surface having a circumferential groove, a cup for grease adapted to be projected into said flange and having its end within the flange slightly tapered and provided with an exterior groove adapted to register with the aforesaid groove, a spring ring serving to lock the cup and flange together and yet permit rotation of the cup, a follower within the cup, and means to cause relative rotation between the cup and the follower for the purpose of forcing grease from the cup through said tube and also cause the cup to be forced outwardly from said spring ring, substantially as set forth.

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

EDWARD H. PRESBREY.

Witnesses:

GEO. L. BEELER, Gno. H. EMsLIE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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