Lubricating device

April 9, 1935.

A. C. TAYLOR ET AL

LUBRICATING DEVICE

1,997,129

<img file="US1997129A_D0001.tif" />

April 9, 1935

A. C. TAYLOR ET AL

LUBRICATING DEVICE

1,997,129

<img file="US1997129A_D0002.tif" />

April 9, 1935

1,997,129

A. C. TAYLOR ET AL

LUBRICATING DEVICE

<img file="US1997129A_D0003.tif" />

Patented Apr. 9, 1935

1,997,129

UNITED STATES PATENT OFFICE

1,997,129

LUBRICATING DEVICE

Alfred C. Taylor and Edward S. Du Bose, Jacksonville, Fla.

Original application October 27, 1933, Serial No. 695,521. Divided and this application March 26, 1934, Serial No. 717,539 (Cl. 221—47)

Claim.

This invention relates to lubricating devices and represents a divisional application of our pending application, Ser. No. 695,521, filed October 27, 1933.

An important object of the invention relates in the provision of a device of the above-mentioned character wherein a pre-determined amount of a lubricant may be ejected in suitable quantities and in accordance with the needs of the service.

Another object is to provide means whereby a quantity of the lubricant may be stored in a suitable receptacle or cylinder and then ejected in definite quantities under the manual control of the operator.

Still another object of the invention is to provide a device which may be operated with one hand to apply a lubricant to inaccessible points.

A final but nevertheless important object of the invention is to construct the device on sturdy lines and of few and simple parts, whereby it may operate efficiently for long periods and sell at a reasonable figure.

With the above objects in view and any others which may suggest themselves from the specification and claims to follow, a better understanding of the invention may. be gained by reference to the accompanying drawings.

In said drawings:

Figure 1 is a side elevation of the device embodying our invention.

Fig. 2 is an elevational sectional view taken on the line 2—2 of Fig. 1.

Fig. 3 is an enlarged sectional detail of the piston construction.

Fig. 4 is a sectional view, slightly enlarged, illustrative of the check valve arranged in the oiler tip.

Fig. 5 is a side elevation of our improved lubricating device depicting a modified form of means for forcing the piston in the cylinder.

Fig. 6 is a sectional view, slightly enlarged, taken on the line 6—6 of Fig. 5.

Fig. 7 is an enlarged sectional view of the oiler tip showing the oil check valve therein.

Fig. 8 is a fragmentary sectional view depicting the construction of the piston.

Fig. 9 is an elevational view of the oiler with a slightly modified form of manually-operated oilejecting means.

Fig. 10 is a sectional view taken on the line 10—10 of Fig. 9.

Fig. 11 is a sectional view, slightly enlarged, taken on the line 11—II of Fig. 9.

Fig. 12 is a sectional view taken through the oiler tip to show the construction of a check valve therein.

Fig. 13 is a sectional view showing the construction of a portion of the piston.

Referring nowmore in detail to the accompany- g ing drawings, wherein like characters of reference denote similar parts through the several views, let 42 indicate the cylinder carrying a fitting 43 having an apertured boss 44 for the reception of the filler plug 45, the spout 46 being affixed io to said fitting 43 and having its outer end reduced, as shown at 47, (see Fig. 4), for the reception of the oilertip 48. Thepassageway through the spout and oiler tip is controlled by a check valve which includes the ball 49, normally held against the jg seat 50 of a sleeve 51 positioned in said passageway, by means of spring 52 having one end anchored to cross-pin 53. The cap 54, positioned at the other end of said cylinder 42 is provided with a bore 55 for the reception of the rack stem 56 20 carrying the piston 57, said stem being provided with a knob 58 and a plurality of saw-teeth 59, as shown. It will be noted that bracket 60 depends from the cylinder 42 and that its lower end is provided with an opening 61 having arcuate walls 25 as indicated by the dotted lines Fig. 1. The lever 62 has its lateral portion 63 extending into said opening 61, spring 64 embracing said lateral portion 63 in the manner indicated. The upper portion of said lever 62 is bent laterally, as indicated 30 at 65, and then upwardly as shown at 66 to present a lip 67 engageable with the teeth 59 of said rack 56.

Upon inspection of Figs. 1 and 2, it will be observed that the inner end of the lateral portion 3g 65, of lever 62, is passed between the ears of the bifurcated extension 68 of said cap 54 and that the frontal portion of pin 69 is contacted by the upper inner end portion of said lever 62, whilst said inner end of lateral portion 65 is positioned above 40 the upper surface of said pin 69, and this position of said parts obtains when said spring 64 exerts pressure against said, lever 62. When the lever 62 and the bracket 60 are grasped by the hand of the operator and pressure is applied to said lever 45 62, the latter moves inwardly and carries the rack stem 56 and piston.57 in the same direction, thus expelling the desired amount of a lubricant through the oiler tip 48. When the lever 62 has reached the limit of its inward travel it may be 50 rocked within the opening 61 and at the point of its contact with pin 69 so that the lip 67 is freed from the teeth 59 and it now slides rearwardly and finally engages another tooth on the previously advanced rack 56. The travel of said lever and 55

1,007,129 the connected rack 56 is varied by the provision of the stud 10 which is threadedly engaged in bore 71 of said bracket 60. It is apparent that said stud may be adjusted to vary the travel of the lever ·' β 62, and also the piston 57, and that said lever contacts the head 72 of said stud 70. In this way the amount of the lubricant to be expelled may be regulated in accordance with the needs of the service. In the present instance, the piston 57, 10 borne by the rack stem 56, includes a follower plate 73, a washer 74 and an expansile ring 75 that holds the latter in position, said ring being engaged by a retainer 7, as shown in Fig. 6.

Upon inspection of Fig. 5 it will be noted that ig the cylinder 77 is closed at one end by a cap 78 having an opening 79 to receive the rack stem 80 carrying the piston 81 at one end and a knob 82 at its other end. The usual fitting 83 is arranged at the other end of the cylinder 77, said fitting 20 including an internally threaded apertured boss 84 to receive the filler plug 85. The spout 86 leads from said fitting 83, its outer end being reduced in diameter, as shown at 87, to receive the oiler tip 88.

The form of check valve illustrated in Fig. 7 comprises the ball 89 which is pressed against its seat 90, of sleeve 91, by means of spring 92 having its outer end abutting cross-pin 93.

It is obvious that as the piston is advanced in 30 the cylinder, the latter having been previously filled with a lubricant, the latter is discharged through the passageway in the spout 86 where it proceeds through the oiler tip after moving said ball 89 from its seat 90. Normally the ball 89 is 35 in the position indicated in Fig. 7 to prevent the leakage of the lubricant.

The cap 78 is provided with an extension 94 which serves as a bracket to support one end of the U-shaped handle or lever 95, the latter being made 4Q of springy strap material to permit the flexing of the leg portion 95α towards its companion. The upper end of said leg portion 95α is notched at 96 to partially embrace said rack stem 80 and it also slidably supports a plate 97, notched at 98, (see 4₅ Fig. 6), the bottom of the notch being shaped to engage in a selected tooth of the saw teeth arrangement 99 of said stem 80. The plate is held in the position shown in Figs. 5 and 6 by means of a spring 100 which rests in socket 10 ί carried 50 by said leg portion 95α.

Upon inspection of Fig. 6 it will be noted that said plate 97 is slotted at f 02 and 103, the headed stud 104 having one end in slot 102 whilst the stud bolt 105 passing through slot 103 maintains said 65 plate 97 and said leg portion 95α in the positions indicated, the arrangement being such that said plate 97 may slide up and down the upper portion of said leg portion. Said stud 104 is passed through the handle 95 and bracket 94 where a βο nut 106 is applied which serves to bind the parts together. When the parts are in the positions shown in Fig. 5, the spring 100 urges the upper edge of said plate 97 into engagement with one of the teeth 99 and when the handle is grasped 65 in the hand and pressure applied to the leg portion 95α, the latter is flexed inwardly thus advancing the rack stem and piston into the cylinder to expel the lubricant.

When the pressure is released on the leg por70 tion 95α the plate 97 may be moved downwardly, in view of slots 102 and 103, and when the leg portion springs back to its normal position, said plate 97 is released, whereupon it moves upwardly to engage with one of the teeth 99. The move75 ment of the piston 81 may be varied by manipu lating the adjusting nut 107 along the stud 104, thus limiting the inward movement of said leg portion 95α and the amount of lubricant to be expelled.

The piston arrangement, shown in Fig. 8, com- ₅prises a follower plate 108, a washer 109 held in position by means of ring ί 10 and a retainer Hi.

From the foregoing it will be seen that the nut 107 may be positioned along the stud 10G and when it is contacted by the leg portion 95α, the travel of the latter is restricted. As said stud may be quickly moved along said stud 184, the amount of lubricant to be expelled may be conveniently varied to meet different conditions.

In Fig. 9 the cylinder 112 is provided with a χβ fitting ί 18 having an apertured threaded boss 1! 4 to receive the plug 115, said plug being removable to permit the entrance of a lubricant into said cylinder. A spout 116 may be attached to said fitting 113, as indicated at 117, whilst the outer ₂o end of said spout is reduced in diameter, as shown at 118, for the reception of the oilerttip 119, (see Fig. 12).

A check valve is mounted within the passageway of the spout 116, said valve including a ball 25 120 normally pressed onto the seat 121 of sleeve 122 by spring 123 which abuts the cross-pin 124. The other end of said cylinder 112 is provided with a cap 125 having an opening 126 to receive the rack stem 127, the latter carrying 30 the piston 128 at one end and a knob 129 at its other extremity. Said cap 125 is extended downwardly to present a bracket arrangement 130 that terminates with an apertured bearing 131 mounting a rod 132 affixed to the lower end of lever 133, 35 as indicated at 134, said lever 133 being provided with an offset 135 from which extends an upstanding portion 136, to which is affixed one end of the threaded stud 137, as shown at 138. As shown in Fig. 9, the upper portion of said bracket 130 is 40 cored out to present a cavity 139 having its end walls provided with openings 140 and 141, respectively, which serve as bearings for the slidable stud 137, and it will be noted that a spring 142 embraces that portion of the stud 137 between the 45 aforesaid bearings and also that a nut 143 is attached to the end portion of said stud. Said upstanding portion 136 is provided with a vertical bore 144 which houses a spring 145, which normally urges the ratchet 146 into engagement with 50 a selected tooth of the saw-teeth 147 of said rack stem 127.

Upon inspection of Fig. 11, it will be observed that said ratchet 146 has its shank portion 148 positioned within said bore 144 and that its upper 55 end is bifurcated to embrace the sides of said rack stem 127 and to engage in a selected tooth. The parts being in the positions shown, the bracket 130 is grasped in the hand of the operator and the lever 133 is pressed inwardly and in view of the 60 engagement of the ratchet 146 with one of the teeth of said rack stem 127, the piston moves inwardly to expel a quantity of a lubricant. Obviously, the bearings provided by the openings 140 and 141, and the bearing 131 mounting the rod 65 132, assures free and easy movement of the parts. During the aforesaid operation, the spring 142 is compressed and when the pressure applied to said lever 133 is released, the lever moves rearwardly and the ratchet 146 is depressed until it finally 70 engages another selected tooth. In order to limit the travel of the lever 133 and piston 120, we provide a nut 149 that threadedly engages the stud 137 and which may be shifted to vary its distance from that point of the bracket 130 ad- 75

1,997,120 jacent opening 140 thereby limiting the travel of the threaded stud 137. In view of this arrangement the distance of the nut 149 from that portion of the bracket contacted thereby regulates ₅ the travel of the piston and the amount of the lubricant to be expelled from the cylinder. Suitable portions of both the bracket 130 and lever 133 may be knurled, as indicated.

The preferred form of the piston assembly 128 ]q is shown in Fig. 13, wherein it will be noted that we provide a follower plate 150 and a washer 15 i; also an expansile ring 152 and a retainer 153.