US1300099A

US1300099A - Grease-cup.

Info

Publication number: US1300099A
Application number: US21766018A
Authority: US
Inventors: Emil C Anderson
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-02-16
Filing date: 1918-02-16
Publication date: 1919-04-08
Anticipated expiration: 1936-04-08

Description

E. C. ANDERSON.

GREASE CUP.

Patented Apr. 8, 1919.

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GREASE CUP.

APPLICATION FILED [58.16. 1918.

1,300,099. Patented Apr. 8,1919.

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mmss CUP.

APPLICATION FILED FEB. Hi. I918.

Patented Apr. 8, 1919.

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warm,

EMIL C. ANDERSON, OF DENVER, COLORADO.

GBEASE- CUP.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed February 16 ,1918. Serial N 0. 217,660.

To all whom it may concern.

Be it known that I, EMIL O. ANDERSON, a citizen of the United States, residing in the city of Denver, county of Denver and ,State of Colorado, have invented certain new and useful Improvements in Grease- Cups, of which the following is a description.

My invention belongs to that general class of devices employed for lubricating movable parts, such as rotating shafts, wrist pins, guide ways, cross-heads and the like, and is particularly designed for use upon such parts where there is great vibration or movement of the parts frequently tending to accidentally disengage them.

To this end my invention consists in the novel construction, arrangement and combnation of parts herein shown and described and more particularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like or corresponding parts,

Figure 1 is a central sectional vlew of a grease cup of my improved design, in which the cooperating part or follower is partly shown in section and partly in full lines;

Fig. 2 is a similar view showing the sectional follower in its locked position;

Fig. 3 is a longitudinal sectional view through the follower and a portion of the grease. cup;

Fig. 4 1s a transverse section on line H of Fig. 3;

Fig. 5 is a modification of the construction shown in the preceding fi ures;

Fig. dis a top plan view of t e same;

Fig. 7 is an elevation of a ortion of the follower of the construction similar to that shown in Fig. 5;

Fig. 8 is an enlarged fragmentary view showing the operation when the parts are locked;

Figs. 9 and 10 illustrate a modlfied form;

Fig. 11 is a central section showing a construction somewhat similar to the forms shown in Figs. 1 to 4; and

Figs. 12, 13, 14 and 15 illustrate another modification.

In the drawings, 1 is a grease cup of well known form provided with a dependin stem 2 or equivalent part by means of whic it may be secured in position. The cup is provided with the channel 3 through which the grease may be conducted to the part to be lubricated. The grease cup, as shown, is internally threaded for the rece tion of a follower or cooperating part 0 peculiar construction. It has been found that when a follower consistsof a single part screwed into the cup, the vibration of the part carrying the cup frequently causes the follower to back off and finally become accidentally disengaged, not only allowing the escape of the grease or lubricant by reason of the movement of the part, but also, as in the case of the wrist pin of locomotives, permitting the entrance of gravel, sand and dust which obviously would be carried directly to the part being lubricated and cause serious damage and injury.

In my improved form the follower is composed of a plurality of registering members super-imposed one upon the other, externally threaded to engage the threads of the cup, and with the ap roximate faces of said members cam faced: so that as one, for illustration the outer one, is backed off to disengage the parts, the cam faces of the two parts will codperate serving to press the two parts so apart that the follower will firmly lock on the threads of the grease cup and effectually prevent an accidental disengagement therefrom.

As shown in Figs. 1 to 4 inclusive the follower is composed of super-imposed

members

4 and 5 cam faced as indicated at 6 and 7, with an abutting shoulder 8 on each. The upper part 5 is provided with an extension or sleeve 9 formed with a central longitudinal, aperture 10, (shown in dotted lines in Fig. 1,.and full lines in Fig. 3). A bar or.

rod 11 loosely and rotatably extends through said sleeve 9 and is securely fixed to the lower part 4. of the follower. The bar 11 is preferably provided with a suitable head 12 of a form to receive a wrench or other tool.

Thus it may be square or of any of the usual forms for that purpose. The sleeve 9 in the preferred construction is also formed to receive a wrench, preferably of a form that will not register with the top 12. As shown, the part 12 is squared, while the part 9 is hexagonal and of larger size. In the preferred form the parts are so assembled that'when the two

parts

4 and 5 are in a position that theshoulders 8 of the two parts are in contact as in Figs. 1 and 3 there will be a slight clearance between the head 12 and the sleeve 9 as at 13, permitting sufiicient movement to secure the locking effect. The construction of the follower as described is clearly shown in Fig. 3 and the operation clearly illustrated in Fig. 2. Thus after the grease cup is pro Jerly charged, the follower may be readi y threaded with the cup. The shoulders 8 being in contact the follower may be threaded down into the grease cup as far as may be desired, being capable of handling as an integral or unitary part. When the follower has been inserted to the desired point a wrench is then placed upon the head 12, and upon turning it to the right in the usual manner, the part 4 will be further screwed downward independently of the part 5 a distance that will cause the shoulder 8 on the part 4 to separate from the shoulder 8 on the part 5 as ind cated, thus separating the parts 4 and 5 a distance regulated by the cam faces, and firmly looking the follower on the grease cup. While in this position the vibration of the parts has a tendency to more firmly lock them together. The follower can not be backed off by placing a wrench upon the sleeve 9 as any effort to back the sleeve off will simply look the parts tighter in position. The only manner In which the parts can be backed off will be by placing a wrench either upon the part 12 or the sleeve 9 and rotating the respective part to bring thetwo shoulders 8 again in contact. When this occurs a wrench placed upon the sleeve 9 will serve to screw the follower down again as a unitary part, when it will again be locked in position as before. On the other hand, the entire follower may be backed off and disengaged by en aging the wrench with the part 12.

This form of construction is capable of a number of modifications. As shown in Fig. 5, the construction is substantially the same with the exception that the cup here is illustrated as bein provided with a follower particularly adapted for use upon a cup where the grease is warmed into a substantially fluid state by the friction, or a grease in a more fluid or semi-fluid state is used which may not necessitate the pressure of a follower to feed it to the lubricated part. As here shown, the grease cup 1 is provided with a follower comprising a plurality of parts 14:15 with the shoulders 8 as described. The sleeve here is shortened as at 16 and provided with a cap 17 adapted to be screwed down firmly and snugly upon the cup 1. The top 18 is rovided with a bar extending longitudinal y through the

parts

15, 16 and 17 with its lower end firmly secured to the part 14 as before described. In assembling, the parts are rotated until the shoulders 8 are in contact, when the follower may be screwed down into the grease cup until the ca 17 is firmly seated on the upper margin 0 the cup. A wrench is then placed upon the part 18 and it 13 rotated the distance allowed by the cam faces of the

parts

14 and 15, firmly locklng the follower in position within the cup as before described. As clearly shown in Fig. 7, where a slightly modified form is illustrated, a clearance is provided between the head 18 and the top of the part 16, as at 19, and as before stated, this clearance is sufiicient to permit the locking of the members of the follower with the cup as described.

Fig. 8 illustrates the locking effect caused by rotating the parts upon their cam faces. The parts are enlarged to clearly illustrate the locking effect in which the threads of the part 14 are forced downward firmly and in frictional contact with the upper edges of the thread on the cup, while at the same time the upper margins of the thread on the part 15 are forced upward firmly in frictional contact with the lower margins of the thread on that part of the cup.

Figs. 9 and 10 illustrate another form of follower in which the operation is substantially the same. As here shown, the

sections

20 and 21 are provided with cam faces as before described, a bar 22 firmly secured to the part 20 extends to the upper face of the part 21 and is there headed to overlie the same to prevent the accidental disengagement of the parts. The bar 22 loosely rotates in the part 21 and the upper face of the part 21 is'provided With a groove 23 for the reception of a spanner or tool of that character, while the upper end of the bar 22 is provided with a cooperating groove 24-, which as the bar is rotated may register with the groove 23 for the insertion of a tool. similar to the screw driver, when the follower may be inserted as a whole as before de cribed. When it has reached the desired point, the parts ma be locked in either one or two ways. For il ustration the screw driver may be inserted in the groove 24 of the bar 22 and upon turning the same to the right the part 20 will be rotated Within the cup separating the

parts

20 and 21 as before set forth, the cooperating cam faces forcing the threads in frictional engagement with the approximate parts as before described. (in the other hand, if preferred a spanner may be placed in the groove 23 of the upper part 2] and this part may be backed partly out, serving the same purpose and effectuzfilly locking the follower in position as beore.

In the form shown in Fig. 11 the construction is substantially the same as that shown in Figs. 5, 6 and 7 with the exception that the entire follower may be turned downward as in the construction shown in Figs. 1 to 4 and 9 and 10 until the grease is substantially exhausted from the cup. In other words, the

head 25 is connected by a rod with the lower section loosely passing through the art 27. There is no collar or cap correspon ing to the part 17 in Figs. 6 and 7, and the entire follower can be screwed down by placin a wrench upon the part 28 and can be lo cke in position in either of the ways described in connection with the form shown in Figs. 9 and 10, that is, either by turning the head :25 to the right and forcing the part 26 downward, or by placing a wrench upon the part 28 and partially backing the part 27 off.

In the form shown in Figs. 12, 13, 14 and 1.3, the lower part 29 of the follower has formed therein a square or equivalent shaped opening 30 for the reception of the end of the tool. This opening does not extend entirely through the part 29 but only a sufficient distance to form a proper engagement for the end of the cooperating tool. The part 31 has a similarly formed opening extending entirely through it and registering with the part 30. It will readily be seen that by passing the tool through the part 31 until it is in engagement with the part 30 as shown in full lines in Fig. 13, the two parts will register and may be screwed down into the cup together as before described, while upon retractin the tool 32 as shown in dotted lines in F 1g. 13 or full lines in Fig. 15, the upper section 31 of the follower may be partially backed off, serving to effectually lock the follower in the cup as before described. This will bring the open-- ing through the part 31 and the depression 30 out of alinement with each other. In order to remove the follower it will be necessary to place the tool again in the opening 111 the part 31 and turn the same until the openings in the two parts are again in registry with each other, and the tool may then he slipped down into the opening 30 and the entire follower backed off in the usual manner.

As shown in Fig. 14, the construction is substantially the same with the difference that there is a section of the threaded portion on the follower, partly on the upper section thereof as at 33 cut away. This part not being threaded, but the threads on the balance of the member being cut to cooper ate with the thread in the cup and to operate synchronously with the lower section of the follower. The operation is substantially the same. The advantages of this form consist in the fact that the lower section of the follower may be screwed down into the same a little distance below the uppe margin of the cup when the upper section may be loosely dropped thereon, and when the shoulders of the cam parts come in contact, the entire follower may be screwed down to position as a unit.

In practical operation and with severe use it has been found that my construction is thoroughly effective for the purposes described, and that it is an important element of safety in devices of this character.

Having thus described my invention, what I desire to secure by Letters Patent is 1. A device of the kind described comprising an internally screw threaded main carrying part, in combination with an externally threaded cooperating part compris ing a plurality of registering members super-imposed one on the other with cam faced approximate faces, and means for rotating one of said members independently of the other or in unison therewith substantially as described.

2. A device of the kind described, comprising an internally screw threaded main carrying part, in combination with an externally threaded cooperating part comprising a plurality of registering members super-imposed one on the other and provided with cam faced approximate faces, one of said parts being provided with a projecting stem rigidly fixed thereto rotatably extending through the other member and formed at its outer end to receive a tool for rotating the same.

3. A device of the kind described, comprising an internally screw threaded main carrying part, in combination with an externally threaded cooperating part comprising a plurality of registering members super-imposed one on the other and formed with cam faced approximate faces, one of said members being provided with a projecting stem rigidly secured thereto rotatably extending through the other member with its free end formed to receive a tool for rotating the same, the said stem being of a length to permit slight longitudinal play of the same within the outer member.

4. A device of the kind described, comprising an internally screw threaded main carrying part, in combination with an externally threaded cooperating part comprising a plurality of registering members super-imposed one on the other with cam faced approximate faces, the outer member being provided with an extending sleeve formed for the cooperation of a tool to rotate the same and being longitudinally cored, and the other member provided with an extending stem rigidly secured thereto rotatably mounted in the sleeve member with its free end formed for the reception of a tool to operate the same.

5. A device of the kind described, comprising an internally screw threaded main carrying part, in combination with an externally threaded cooperating part comprising a plurality of registering members superimposed one on the other with cam faced approximate faces, provided with shoulders to limit the rotation of one on the other in one direction only, the outer member formed with a. marginal extension near its upper part adapted to form a cap for the carrying part, and an extension for the reception of a tool to rotate the same, the same being centrally channeled for the reception of a rotating stem, an inner cooperating part provided with an extending stem rigidly secured thereto, rotatably positioned in the outer member with the free end formed for the reception of a tool, the said stem being allowed a slight longitudinal movement allowing a rotation of one part in relation to the other greater than the distance between the threads of the carrying part.

In testimony whereof, I have hereunto 15 signed my name in the presence of two subscribing witnesses.

EMIL C. ANDERSON.

Witnesses:

S. J. ODAY, CHAS. L. SMELT.

Copies of this patent may be obtained or five cents each, by addressing the Commissioner of ratents, Washington, D. 0."