US1666502A

US1666502A - Pumping lubricating cup

Info

Publication number: US1666502A
Application number: US47658A
Authority: US
Inventors: George L Moore
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-08-03
Filing date: 1925-08-03
Publication date: 1928-04-17
Anticipated expiration: 1945-04-17

Description

April 17, 1928.

. G. L. MOORE PUMPING LUBRICATING CUP Filed Aug. 5. 1925 u u m 5 www g a y i i .6 if

Patented Apr. 17, 1928.

UNITED STATES ,7 1,666,502 PATENT 0FFlCE.

GEORGE L. MOORE, OF CHICAGO, ILLINOIS.

PUMPING LUBRIOATING CUP.

Application filed August a, 1925. Serial No. 47,658.

tages, reference may be had to the following detailed description taken in connection with the accompanying drawing, wherein:

Figure 1 is a vertical section through a device embodying the present invention, the pump plunger being shown in its lowermost position; and Fig. 2 is a view similar to Fig. 1 showing the plunger raised.

Referring to the drawing, 1 represents a cup of any desired construction having at the bottom a tubular stem 2 that is adapted to be screwed into a part A containing a bearing and thus support the cup from the latter. YVithin the cup is a small cupshaped member 3 having a tubular projection 4 fitting into the upper end of the tubular stem. Extending at'its lower end into the member 3, and having a sliding fit in the latter, is a heavy plunger 5 having a reduced lower end 6 that has a sliding fit in the tubular member 4. The upper end of the plunger is surrounded by an annular rib 7 on the under side of the top or cover 8 of the cup. Surrounding the plunger, above the member 3, is a weight 9 that may be locked thereon by a set screw 10. Surrounding the member 3 and resting upon the bottom of the cup is a spring 11 whose upper end engages with the under face of the weight 9. The parts are so proportioned that the upward pressure of the spring is slightly greater than the downward pull of gravity on the plunger and its weight,

so that the plunger is normally held raised as shown in Fig. 2; Consequently a slight jar whichtends to move the plunger down- 'war ds relatively to the surrounding cup, will cause the plunger to descend to the lower limit of its movement as shown in Fig. 1. When the plunger is up, the reduced lower end thereof stands clear of the bottom of the cup-shaped member 3 so as to permit the contents of the latter, if there be any, to dram down through the tubular part '4. The sides of the member 3 are perforated just above the bottom thereof,'as indicated at 2, so that the lubricant contained in the main cup will flow into the auxiliary cup and'out through the bottom of the latter when the plunger is up. lVhen the plunger is arred down, the reduced lower end thereof closesthc hole in thebottom of the auxiliary cup.

Within the tubular stem of the main cup is a check valve 13 that seats upwardly and prevents the lubricant from-flowing down into the bearing when the check valve is closed. In the arrangement shown the check valve is in the form of a ball that rests on a spring 14 which in turn rests on a ring 15 screwed into the lower end of the stem 2. The auxiliary cup is preferably of case hardened iron, and therefore placed in the tubular stem 2, just below the part 4 is a ring 16 of suitable material to contain the seat for the check valve.

' Normally, when there is no vibration, the plunger ocoupys its upper position asindi cated in Fig. 2. Assuming the device to be on a traveling vehicle, it will be understood that there will be many jars that will cause the cup to rise suddenly. Whenever this occurs the inertia of the weighted plunger causes it to remain relatively stationary, so that the reduced lower end is driven into the outlet for the lubricant and forces the column of lubricant in the passage above the check valve sharply ahead of it and push the check valve open sufficiently far 'to permit the passage of an amount of lubricant equal to that displaced. in the upper end of the passage by the reduced end of the plunger. The mass of the plunger and its attached weight is considerable, and therefore the lubricant will be forced into the hearing at a comparatively high pressure. The move; ments of the plunger have been exaggerated in the drawing for the sake of clearness, but the movements of the plunger and particularly the distance to which it enters the out let passage, may be made quite small, so that only a minute quantity of the lubricant will be forced out at each downward stroke.

The main cup may be filled through a proved device feeds the lubricant positively and with considerable force, it serves not only as an efiicient lubricating means, but permits comparatively inaccessible hearingsto be lubricated efiectively without requir-- I ing the user to go near the device, as he may supply the lubricant from a remote point without danger of flooding the bearings. It should also be noted that though the plunger normally occupies its upper position. the check valve at such times prevents lubricant from flowing into the hearing. In other words, when an automobile is standing still and no additional lubricant is needed in those bearings between the parts of which there is no motion, none will fiow. into such bearings. 1

While I have illustrated and described with particularity only a single preferred form of my invention, I do not desire to be limited to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements vwhich come within the definitions of my invention constituting the appended claims.

'Iclaim:

1. In combination, a lubricant receptacle having a small discharge'outlet in the bottom, a heavy vertically movable member having a reduced end adapted to fit said out let with a sufficient degree of tightness to act as a plunger positively to expel lubricating material that has entered the outlet, means for counterbalancing the weight of above the'upper end of said the plunger, and means for restricting the movements of the plunger between a lower limit in which the reduced end extends a short distance intosaid outlet and an upper limit in which said end stands above said outlet.

2. In combination, a lubricant receptacle having an outlet passage of small cross-section leading out of the bottom, a heavy vertical plunger having its lower end shaped to fit slidably into said passage, guiding and stop means to permit the plunger to rise and fall between a lower limit in which it extends a short distanceinto said passage and an upper limit in which its lower end stands passage, and a check valve in said passage.

3. In combination, a lubricant receptacle having an outlet passage of small cross section leading out ofthe bottom, a heavy vertical plunger having its lower end shaped to fit slidably into said passage, guiding and stop means to permit the plunger to rise and fall between a lower limit in which it extends a short distance into said passage and an upper limit in which its lower end stands above the upper end of said passage, an upwardly seating check valve in said passage, and a spring normally supporting the plunger in its upper position.

Intestimony whereof, I sign this specification.

' GEORGE Moons.