US1364284A - Grease-cup - Google Patents

Description

H. C. KESTEL.

GREASE CUP. APPLICATION FILED MAY 24, I919.

. 1,364,284. v Patented Jan. 4,1921.

A407 Q /W UNITED PATENT OFFICE.

HEN RY C. KESTEL, OF TOLEDO, OHIO, ASSIGNOR TO THE K. M. MANUFACTURING COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

GREASE-CUP.

To all whom it may concern: 1

Be it known that I, HENRY C. -Kns'rnL, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Grease-Cups; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention has for its object to provide in connection with a grease cup which can be readily filled and snapped into position in axial alinement with a plunger having a hollow stem through which the grease may pass to the parts to be lubricated, a floating ring located on the plunger that will readily conform to the shape of the cup and a means whereby escape of the grease by the plunger and stem is prevented. Further objects and advantages of the invention will appear from the description forming a part of this specification and upon the examination of the drawings.

The invention may be contained in grease cups of different forms. To illustrate a practical application of my invention I have selected a grease cup containing the invention as an example of the structure containing my invention and shall describe it here inafter. The structure selected as an example is illustrated in the accompanying drawings.

Figure 1 of the drawings, illustrates a sectional view of the grease cup showing the plunger down at its lowest point and the cap or cup proper in position for removal from the supporting part of the cup. Fig. 2 is a sectional view of the plunger within the cup proper and in position to lock the cup from displacement. Fig. 3 is a sectional view taken on the line 3-3 indicated in Fig. 2.

1, in the figures, is the stem that may be threaded into a part of the machine that is to be lubricated by the grease that is inserted in the cup. it is provided with the threads 2 whereby it may be screwed into a tapped portion of the machine. A pressed steel shell 3 is secured around the top of the stem 1 by means of the shoulder 4 and Specification of Letters Patent.

Patented Jan. 4, 1921.

Application filed May 24, 1919. Serial No. 299,557.

an inner shell 5 that is forced into the shell 3. The shell 3 is provided with a lip 6 that extends around a little more than the semicircumierence of the upper edge of the shell 3, while the cup 7 is provided with a flaring edge 8 that fits beneath the flange 6 and inasmuch as the flange 6 extends beyond the semi-circle of the upper edge of the shell 3 the cup 7 is snapped into position by forcing the flange 8 underneath the lip 6 and so that the cup 7 will be in axial alinement with the shell 3. i

The portions of the lips 6 that extend be yond the semi-circle of the upper edge of the shell 3 will thus hold the cup 7 in position. The cup 7 however, is locked in position by movement of the plunger or piston 9 into the interior of the cup 7.

The plunger 9 is preferably formed of I two sheet metal parts 10 having the webs 11 and the flaring edges 12. The sheet metal parts that form the plunger are laced back to back and thus leave a space etween the flaring portions 12 in which is placed a cork ring 13. The cork ring 13 is loosely placed in the plunger 9 and forms a floating rlng which permits the ring 13 to readily conform to the shape of the interior surface of the cup 7 notwithstanding the fact that it may be irregular as to its circularity and slightly out of axial alinement. By this arrangement the cork ring 13 by means of its elasticity or resiliency will be tightly pressed throughout its entire periphery against the inner cup 7 by the pressure that is exerted on the ring by either of the disks 10 that form the plunger 9. This will prevent the escapement of the grease by the plunger when the plunger is raised within the cup.

The stem 14 of the plunger is made hollow and is secured to the plunger 9 by the pressure of the flaring end 15 which is located in openings formed in the members 10. The stem 15 is threaded, the thread on one side 16 of the stem, however, being cutable area of contact around the stem if desired. Rotation of the shells 8 and will through the operation of theflattened parts of the shell 5 and the stem 14, cause rotation of the stem 14 and consequently the stem 14 and the plunger 9 will be raised or lowered within the cup 7. As soon as the upper edge of the plunger 9 rises above the lower edge of the cup 7 the cup 7 will be locked from displacement from its connection with the shell 3, by .reason of location of the plunger 9.

As the plunger 9 is raised the grease will be forced down through the hollow stem 14 of the plunger and forced down through the openings that communicate with the bearings that are to be lubricated. The end 17 of the stem 14 from which no portion of the threads are removed will prevent the escape of the grease by the stem back into the shell 5 or the space located. below the plunger 9 which might otherwise occur if the stem 14 had the thread removed throughout its entire length on one side.

By my invention is thus provided an exceedingly eflicient grease cup that may be readily secured as by merely springing-the cup into position. Care of placement so as to match threads is thus avoided and the inconvenience caused by the burringof thread ends is thus eliminated.

I claim: v

1. In a grease cup, a cup member, a plunger, the plunger having a free floating ring of resilient material to conform to the shape of the cup member and transversely shiftable relative to the plunger,.means for moving the plunger and cup member relative to each other.

2. In a grease cup, a sheet metal cup member, a plunger, the plunger having a free floating ring of cork'to conform tothe shape of the cup member and transversely shiftable relative to the plunger, means for moving the plunger relative to the cup member.

3. In a grease cup, a supporting stem, a steel pressed shell rotatably supported on the said stem and having an inwardly extending semi-circular lip, a steel pressed shell located within the first named shell for securing the first named shell in rotatable position upon the stem, the upper edge of the second named shell extending to a point slightly removed from the lip on one side of the first named shell and to the edge of the first named shell on the other side of the first'named shell, a cup member having a flaring flange located along its lower edge and secured by the said lip and between the said lip and the upper edge of the second named shell, a plunger movable in the cup and within the second named shell and hav-' ing a stem guided by the upwardly extending flange located in the second named shell.

4. In a grease cup, a supporting stem, a cup member rotatably connected to the grease cup, a plunger, a threaded stem connected to the plunger and threaded into the supporting stem, the plunger stem having the thread removed from a part of one side thereof, the thread being continuous at the lower end of the stem to prevent the escape of the grease between the "said stems.

5. In a grease cup, a supporting stem, a cup member rotatably connected to the grease cup, a plunger, a threadedstem connected to the plunger and threaded into the supporting stem, the plunger stem having the thread removed from a partof one side thereof, the thread being continuous at the lower end of the stem, a plunger having a 'floating ring of resilient material.

In testimony whereof I have hereunto signed my name to this specification.

HENRY C. KESTEL.

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