Grease-cup.

Application filed March 28, 1911. Serial No. $18,1087.

To all whom it may concern:

Be it known that I, Malkin Mickelsen, a citizen of the United States, residing at Callaway, in the county of Becker and State 5 of Minnesota, have invented certain new ant useful Improvements in Grease-Cups; anc I do hereby declare the following to be a full, clear, and exact description of the invention, such as .will enable others skillet 10 in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved automatic and positive force feed grease lubricator cup, especially 15 adapted for use in supplying grease or hare oil to the bearing of an engine crank pin, and to this end, the invention consists of the novel devices and combinations of devices hereinafter described and defined in 20 the claims.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a 25 view in side elevation showing the improved device applied in working position to the connecting rod of an engine ip position to furnish lubrication to the crank pin on the crank disk, some parts of the engine being 30 broken away; Fig. 2 is a detail view on an enlarged scale showing a portion of the improved device in front elevation, some parts of the engine being shown in section, and other parts thereof being broken away; Fig. 85 3 is a plan view of the improved device, on an enlarged scale, with some parts broken away ; Fig. 4 is a view of the improved device in side elevation, on an enlarged scale, with some parts broken away ana the ex40 posed parts shown in section, Fig. 5 is a view principally in vertical section taken on the line a;⁶ ®⁵ of Fig. 3, the same being on the same scale as Fig. 4; and, Fig. 6 is a detail view in section taken on the line 45 ai* of Fig. 5.

For the purpose of illustrating the improved device in working position, a portion of an engine has been shown in the drawings, of which, the numeral 1 indicates a 60 portion of the cross head guide, 2 the cross head, 3 the connecting rod, 4 the crank disk, and 5 the crank pin.

Referring to my improvement, the numeral 6 indicates a grease cup which, as 66'shown, is provided at its bottom with a perforated discharge neck 7, and which neck 7 is detachably secured to the connecting rod 3 or any other suitable support, by screw-threaded engagement. The cup 6 is provided with a pair of laterally spaced and _eovertically extended bearing lugs 8, and a depending foot portion 9 which is secured to the connecting rod 3 and holds the cup 6 locked in its proper position. At its upper end, the o^ter vertical face of the 65 cup 6 is reduced to form a covei’ seat 10 on which is telescoped the dependihg retaining flange of a removable cover 11. This cover 11 is locked on its seat 10 by means of bayonet joints 12, as shown, three in 70 number, and the cover 11 is still further locked against rotation by means of a spring lock 13, one end of which is secured to the retaining flange of the cover 11 and the other, or free end of which is normally 7b seated in a notch 14 in one of the bearing lugs 8. To the intermediate portion of the spring lock 13 is secured, an outwardly and laterally projecting finger .piece 15 having an inwardly projecting guide stem 15^a 80 which works in a seat 16 formed in the .retaining flange of the cover 11 for guiding the spring lock 13. Rotatively mounted on the top of the cover 11 is a horizontally positioned worm gear 17 having a depending 85 hub which is provided with a centrally located, vertically extended and internally screw-threaded passage 18. The hub of the worm gear 17 is rotatively mounted in a seat 19 extended vertically through the cen- 90 tral portion of the cover 11. The lower end of this hub is upset, as shown in Fig. 5, to form a retaining flange which engages the under face of the cover 11 and locks the worm gear 17 against removal therefrom. 95

Fitted within the cup 6 is a ring-packed piston 20 having an upwardly projecting stem 21 which works through the passage 18 of the worm gear 17 and has screw-threaded engagement therewith. As is evident, the 100 internally screw-threaded hub of the worm gear 17 acts as a nut on the piston stem 21 and the cover 11 forms a base of resistance for the worm gear 17. To lock the piston stem 21 against rotation, but to permit Ion- 106 gitudinal movement thereof, its opposite faces are flattened or reduced at 22 find a guide bar 23 is secured to the underside of the cover 11. This guide bar 23 is provided with a central passage through which the 110 liston stem 21 works, longitudinally, and its walls closely engage the piston stem 21

1,011,986

S at its flattened sides 22 ana hold the same against rotation. .

Relatively mounted in the bearing lugs 8 is a horizontally extended shaft 24 pro5 vided, at its intermediate portion, with a worm 25 which eingages the worm gear 17. Rigidly secured to one end of the shaft 24 is a ratchet wheel 26 subject to a springpressed pawl 27 pivotally secured to a le10 ver 28, which, in turn, is pivotally mounted at its intermediate portion on the shaft 24. The construction of the pawl lever 28 is such as to embrace the ratchet wheel 26, as best shown in Fig. 3. .,. „ .,

Screw seated in a raised boss 6 on the side of the cup 6, and directly below the power end of the pawl lever 28, is a stud 23 on which is relatively mounted a star.wheel 30 having an eccentric pin 31. For the, pur20 pose of yieldingly and frictionally holding the star wheel properly positioned and also to hold the stud 29 against rotation a flat spring 32 is provided. This flat spring 32 is secured to one of the bearing lugs 8 and 25 its free end is bifurcated and the prongs thereof, embrace the stud 29 to lock the same against rotation and work against the inner face of the star wheel 30. A link 33 com nects the power end of the pawl lever 28 30 to the eccentric pin 31 on the star wheel 30.

This link 33 is adjustably secured to the pawl lever 28 by means of a pin 34 which is adapted to be inserted into any one of a series of perforations 35 in the pawl lever 35 28; and this adjustment permits the throw of the pawl lever 28 to be changed, at will, to vary the feed. The star wheel 30 receives a step by step movement from a laterally projecting striking pin 36 secured to the 40 crank disk 4 and arranged to engage one of the arms of the star wheel 30 at each rotation of the crank disk 4. ‘

To prevent backward movement ot tne ratchet wheel 26, a spring retaining pawl 37 45 is secured and arranged in the customary manner.