US1069144A - Grease-cup. - Google Patents

Description

W. A. KEITH.

GREASE CUP. APPLICATION FILED Nov. 13, 1912.

1,969, 144. Patented Aug. 5, 1913.

'WALTER A. KEITH, 0F LOS ANGELES, CALIFORNIA.

eanasncur.

wearer.

Speeieation of Letters Patent.l

Patented Aug. 5,1913.

Application led November 13, 1912. Serial No. 731,210.

which is equally well adapted for use inail other places where grease ycups are ernployed.

The main object of the present invention is to provide a construction which will prevent the follower plug from becoming lost.

Referring to the drawings: Figure 1 is a side elevation of a rod equipped with one formv of the invention. Fig. 2 is an enlarged vertical section through the grease cup, showing one form. Fig. 3 is a section on line v8-m3, Fig. 2. Fig. 4 is a side elevation of another form.` Fig. 5 is a Vertical section through the second form. Fig. '6 is a side elevation of the upper portion of the cup in the first form.

The device comprises a cup 1 which is secured in any desired manner to the part to be lubricated, being herein shown as formed integral with the rod 2, and having orifices 3 through which the grease is fed to the bearing. The cup has internal threads 4 and screwed therein is a follower plug 5. This may be provided with any desired means for positively turning it and as hereinv shown, is provided with a square recess 6 to receive a wrench, not shown.

To prevent the plug from becoming lost, I provide a retaining cap 7 which projects over the upper end of the plug 5, but has an orifice 8 which permits of the insertion of the wrench. The orifice 8 is sufficiently large to permit rotation of the wrench without disturbing the cap 7. The cap 7 near its lower rim is provided with a bead 9 which is adapted to grip in any one of several shallow grooves 10 which are formed around the cup 1. In order to give springiness to the side walls of the cup, several slits 1l are formed therein. The bead 9 grips the grooves 10 with suiiicient strength to prevent the accidental removal of the cap 7 and the cap 7 prevents the plug 5 from accidentally unscrewing. V'Vhenever it is desired to remove the plug, a wrench is inserted in the square recess 6 and by unscrewing the plug 5, the upward movement of the plug will lift the cap 7, forcing its bead 9 out of the retaining groove and enable the cap to be completelyv withdrawn, thereby permitting the follower plug to be removed for the insertion ofl fresh grease, after which the plug 5 is screwed vdown until the proper compression is placed on the grease and then the cap 7 is placed in position by simply pressing down on its upper end until arrested hy theplug. Whenever theplug is turned up to feed more grease, 'a simple downward blow of the hand on top of the capv is all that is required to follow up the new position of the follower plug. The operation of the retainin cap is thus reduced to the minimum e ort. The ordinary method of retaining the follower plug con-f. sisting of a lock nut, entails the use of a wrench on the lock nut each time the follower plug is regulated; the present device requires but a tap of the hand to put it in place and its removal is automatically aocomplished whenever the follower plug 5 is unscrewed. I

In the form shown in Figs. 4 and- 5, the follower plug 5tL is made hollow and has a short stem 12 on which a handle 13 is se cured by a pin 14. Revolubly mounted on the pin 12 is the cap 7a which is held from longitudinal upward movement by the handle 13 and rests upon the top of the plug 5a. The cap 7- has a bead 9Et which is adapted to engage in any one of the grooves 1()a formed in the cup 1a. The cap 7a'is also provided with several longitudinal slits 11a to provide the necessary spring. In this form the cap does/not revolve when the plug 5a is revolved, but moves up and down therewith automatically.

What I claim is: i

1. A grease cup comprising a cup, a follower plug screwed therein, a retaining cap over said follower plug, andv telescoping with the cup, the walls of the cup having external circumferential grooves, and the side wall of the cap having a circumferential bead which engages-in a groove on the cup.

2.' A grease cup comprising a cup, a follower plug screwed therein, a retaining cap over said follower plug, and telescoping with the cup, the walls of the cup having external circumferential grooves, and the side wall of the cap having a circumferential head which engages in a groove on the cup, the wall ot the cap being slit longitudinally.

3. A grease cup comprising a cup, a r'oll lewe' plug screwed therein,

lower plug screwed therein, a retaining cap over said follower lug, and telescoping 'with the cup, the wa ls ot the cup having external circumferential grooves, the side wall of the cap having a circumferential head which engages in a groove on the cup, and means at the upper end of the follower plug lor enabling it to .be rotated.

el. A grease cup comprising acup, a follower plug screwed therein, a retaining cap over said follower plug, with the cup, the walls ot' the cup having external grooves, the side walls of the cap having a bead which engages in a grooveon the cup, and means at the upper enel of the and telescoping.

inesatta follower plug for enabling it to he rotated independently ot' the cap.

5 A grease cup comprising a cup, a fol a retaining cap over said follower plug, and telescoping with the cup, the walls of the cup having external grooves, the side Walls of the cap having a bead which engages in a groove on the cup, said follower plug being formed with means at its top to receive a wrench,

said cap having an orifice giving' access to said last means.

ln testimony whereof, I have hereunto set my hand at Los Ange-les, California this 29 day of October, 1912.

WALTER A. KEITH. ln presence oit- G. T. HACKLEY, MARTHA M. LANGE.

@epilee et' this patent may he Commissioner of Patents,

Washington, ll. G.

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