US1008401A - Lubricating system. - Google Patents

Description

E. WOERNBR.

LUBRICATING SYSTEM.

APPLICATION FILED MAY 24, 1910.

1,008,401. 0 Patented Nov. 14, 1911.

Mn] E55 E5 UNITED STATES PATENTOFFICE.

El 'GEN W OERNER, 0F CANNSTATT, GERMANY, ASSIGNOR TO THE FIR-M OF ROBERT IBQSCH, OF STUTTGART, GERMANY.

LUBRICATING srsrEM.

Specification of Letters Patent.

Patented Nov. 14:, 1911.

Application filed May 24, 1910. Serial No. 563,061.

To all whom it may concern:

Be it known that I, Et'rGEN WOERNER, a subject of the Emperor ofGermany, residing at Cannstatt, Germany, have invented certain new and useful Improvements in Lubricating Systems, 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 whidh it appertains to make and use the same.

The present invention relates to means for making visible the quantities of oil fed from a lubricator, so that the action of the lubricator may be supervised during the operation. To this end, it has been heretofore proposed to feed, alternately, measured quantities of oil and of compressed air into the lubricator conduit, so as to divide up the thread of oil flowing toward the place of lubrication into short sections, whose travel in the lubricator conduit can be observed by means of a sight tube interposed in the conduit for that purpose. This expedient has the disadvantage that only every second stroke of the oil pump'can be made available for the feed, and that the air, arriving under pressure at the place to be lubricated, clears it of oil; so that this method is doubly expensive. Moreover, the scope of use for this method is very restricted, for the reason that on the occurrence of high pressures in the lubricator conduit, the air pumped in is compressed to such an extent that it fails to form sharp dividing partitions between the successive-oil'subdivisions, so that viewed through the sight tube they seem to constitute an uninterrupted oil thread.

The present invention consists in using,

instead of air bubbles, lubricating oil or some other suitable fluid, which is so chosen, however,'that the quantities of oil fed by successive piston' strokes of the pump manifest themselves differently, in an optical sense. In this manner, we produce, as with an ordinary oil pump, a continuous oil thread, but one whose progress through the v lubricator pipe is nevertheless perceptible to the eye.

' The device hereinafter described for carrying the invention into effect includes an oil pumping device whereina series of pressure pumps are arranged concentrically about an operating shaft preferably in the Interior of a cylindrical oil receptacle. In add1t1on to the oil receptacle containing the pumps, another oil receptacle is provided, containing for instance, oil of a different or contrasting color. A lubricating pipe or conduit is connected to each pump and the actuating mechanism is so chosen that the pump takes oil alternately from the two oil receptacles and feeds successively to the Inbricating pipe, the quantities of contrasting color thus taken. Accordingly each pump is provided with a distributing slide valve positively driven from the pump-actuating shaft, and the number of strokes of -the distributing slide valves is made half as great as that of the pump pistons. For successive strokes of the pump pistons the distributing slide valves find themselves in different positions, and this makes it feasible, by suitably disposed ports and passages, to establish the desired connections between the two oil receptacles of the pumps and the lubricator pipes; 2'. 0. during each two successive suction strokes the pumps are to connect alternately with the one and with the other of the two oil receptacles, and during the two pressure strokes the pumps are to connect with the lubricating pipes.

In the drawings, Figure '1 represents a top plan View of the apparatus; Fig. 2 represents a vertical section and partial elevation on a plane indicated by. the line 22 of Fig. 1. Fig. 3 is a perspective View of cam S. Fig. 4 is a perspective view of cam s.

Similar letters of reference indicate similar parts in the several views.

Upon the driving shaft A is splined a cam disk'S whose rim is so formed that, measured in the direction of the axis, it passes through two highest and two lowest points, of which the former lie at the terminals of one diameter and thelatter at the terminals of a second diameter at right angles to the first. The pump pistons 6, constituting plunger pistons, play within bored out recesses in the bottom of the oil receptacle. Their upper ends are provided with stirrups d, which overlie the rim of the cam S. In the projecting screw threaded overhangs of the stirrups are set screws e, whose heads enter stirrups f, so that the feed action of the working pistons b can be adjusted. and by turning the thumb knobs which project outside the oil cylinder thereby turning the stirrups f, to accord with the particular requirements of use, even during the working of the oil pump.

Below the disk S, a second disk sis splined upon-the driving shaft A, whose rim constitutes an oblique section of a cylinder, and is overhung similarly to S by the upper ends of distributing slide valves 0. Therefore, with each revolution of the driving shaft, each of the pump pistons makes two strokes and each of the distributing"- slide valves 0 one stroke. The oil receptacle 0 is surrounded by a second annular oil receptacle 0,. The oil receptacle O'is connected with the pump by means of the passages g, and the oil receptacle 0,, by means of the passages h, when the distributing slide valves 0 are in the corresponding position, through the ports of the said slide valves. Passages 5 lead to the lubricating pipes 79, which are provided with glass sight tubes Z. a

In the position illustrated, the plane of the paper passes through the two lowermost points of the rim of the disk S, so that the pump pistons are at the beginning of the suction stroke. that the diametrical plane intersecting the lowermost and the highest point of its rim is inclined 45 to the plane of the paper. The lowermost point of the rim of .9 appears, therefore, in the drawings, ats, and the highest point falls in front of the plane of the paper, and is, therefore, not shown.

In the position shown, the lower edge 0 of the recess in the slide valve appearing at the left in Fig. 1 is in line with the upper edge 2', of the passage 2' leading to the lubricator pipe. Furthermore, the lower edge 0 of a port in the slide valve is in line with the lower edge m, of a passage m connecting the valve casing with the pump cylinder; and, finally, the upper edge 0 of the port of the slide valve is in line with the lower edge 9 of the passage g. In this position, however, the slide valve cuts the pump off from both oil receptacles O and 0 as well as from the outlet passage 2'. Where the passage 9 intersects the pump cylinder, the piston 12 .is turned down to a lesser diameter. This manner of completing the passage ,9 is shown in the drawing merely for the sake of clearness of illustration. The passage 9 could be carried around the pump, with the same effect.

If the driving shaft is rotated inv the. direction of the hands of a watch, the two pistons 6 shown begin their suction stroke. Simultaneously, the slide valve 0, shown at the left, continues its upward movement already begun and connects the passages g and m, by means of the port in the slide valve. The oil can, therefore, following the suction of the piston, enter below the piston, from the receptacle 0. After the driving shaft has rotated 45, the upper The disk 8 is so adjusted,

edge a, of the slide valve port and the upper edge 9, of the passage 9 register'and at that time the slide valve itself has reached its highest position. If the rotation of the driving shaft is continued, the slide valve begins to descend, whereas the piston still moves upwardly, until the shaft has rotated 90 The piston then attains its highest position and all the ports are momentarily closed. At the beginning of the now following pressure stroke, -'the slide valve continues its downward movement, and, as soon as the lower edge 0, has passed the upper edge i the space below the piston is in communication with the outlet passagez' and the suckedin oilis delivered thereinto. While the shaft is rotating 90 farther, and while accordingly the piston is completing its first pressure stroke, the slide valve moves continuously downward without altering the connections then established. At the instant in which the piston completes its first pressure stroke, the left hand slide valve attains the position of the slide valve shown at the right hand side of Fig. 1. For an instant, all ports are then again closed. Now follows the second suction stroke of the piston. During the first 45 of the rotation of the shaft, the slide valve continues its downward movement and begins its upward movement, so that, after completion of the second suction stroke it again takes the position in which the right hand slide valve is illustrated. During this time period, the space beneath the piston is connected with the port it and the piston sucks oil from the receptacle 0,. During the following second pressure stroke, the slide valve again moves continuously upward, and the edges 0 and c successively pass the edges 6, and i, of the passage 71, so that the oil sucked in is delivered into the said oil outlet passage 71. All of the parts have now returned to their original position and the same operation begins an'ew.

As coloring media, all substances are suitable which permit the oil taken from the one receptacle to appear difierently to the eye than that taken from the other receptacle, and which do not prejudice the lubricating function of the oil, nor exert an injurious eifectupon the machine parts with which the oil comes in contact. For instance, in one of the receptacles we could mix a little ground or crushed graphite with the oil. It sufiices, however, to supply one of the receptacles with oil which is by nature or origin of somewhat darker color than that of the other receptacle. Even water may be used in one of the receptacles, under certain circumstances.

What I. claim is:

1. An arrangement for making visible the quantities of oil fed in a lubricating system, comprising a plurality of reservoirs of optically contrasted oil, in combination with a sight-tube through which quantities of oil are fed from one reservoir in successive alternation with quantities of oil from another reservoir, whereby the oil passes through the sight-tube in the form of successive optically contrasted liquid sections.

2. In a lubricating system, a feed pump, a plurality of reservoirs for the lubricant, a feed pipe connected to the delivery orifice of the pump and containing a sight tube, conduits connecting the suction side of the pump to the different reservoirs, and a valve controlling the conduits to put the pump into communication with the difl'erent reservoirs in succession, whereby when the'reservoirs are supplied with optically contrasted liquids there will be fed through the sight tube a lubricant made up of individual optically contrasted sections.

3. In a lubricating system, a plurality of feed pumps, a corresponding number of feed pipes containing sight tubes and connected to the delivery orifices of the several pumps, a plurality of reservoirs for the lubricant,

.- conduits connecting at least two of the reservoirs to the suction side of each pump, and

valves controlling the conduits to put the pumps into communication with their associated reservoirs in succession, whereby a when the reservoirs connected to each pump are supplied with optically contrasted liquids there will be fed through the sight tube a lubricant made up of individual optically contrasted sections.

4:. In a lubricating system, a feed pump, two reservoirs for the lubricant, a feed pipe connected to the delivery orifice of the pump and containing a sight tube, conduits connecting the suction side of the 'pump to the two reservoirs, a slide valve controlling the conduits to put them alternately into communication with the pump, and mechanism 'for so driving the pump and slide valve that for every stroke of the slide valve there are two strokes of the pump, whereby, when the reservoirs are supplied with optically contrasted liquids there will be fed through the sight tube a lubricant made up of optically contrasted sections.

In testimony whereof I affix my signature, in presence of two witnesses.

EUGEN WGERNER.

Witnesses Max ANSGHUTZ, REIN'HQLD ELwnnT.

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