US825048A - Lubricator. - Google Patents

Description

UNITED STATES PATENT OFFICE.

LUBRICATOR.

Specification of Letters Patent.

Eatented July 3, 1906.

Applicationfiled January 19, 1906. Serial No. 2963M.

T0 aZZ whom it may concern.-

Be it known that I, LEWIS GLEASON, a citizen of the United States, residing at Franklin, in the county of Venango and State of Pennsylvania, have invented new and useful Improvements in Lubricators, of which the following is a specification.

My invention relates to lubricators; and its object is to provide a pressure-operated lubricator designed for any devices having a pulsative pressure-such as air-compressors, gas-engines, and steam-engine cylinders and particularly to provide means whereby a certain and positive closing of the lubricatorcap against the valve-operating pressure is insured.

To these ends my invention is embodied in preferable form in the device hereinafter de scribed and illustrated in the accompanying drawings.

Referring to the drawings, Figure 1 is a central vertical section of the lubricator, and

Fig. 2 a detail section on line at w of Fig. 1.

In the drawings, 1 is the oil-containing cup of the lubricator, which preferably has its wall made of glass to permit inspection of the contents of the cup. A cover 2 closes the upper end of this cup, and between this cover and the upper edge of the cup is placed a gasket 3, of rubber or cork, and a similar gasket 4 is placed between the bottom of the cup and the lubricator-base 5. The cover 2 has a central depending stem 6, provided with screwthreads 7, engaging a threaded stem 8, rising from the base, whereby the cover, cup, and base are clamped together. 9 is made integral with the cover to provide means for engagement of a wrench to effect the removal of the cover. A loose removable filling-plug 10 is placed in the cover. It has an air-vent 11 to permit the entrance of air to the cup and to prevent any possible accumulation of pressure therein.

Extending through the stem 6 and threaded into the same at the upper part thereof is a feed-regulating rod 12, having at its lower end a conical head 13, and a pin 14, which forms an oil-dropper. This head and the pin fit in a correspondingly-shaped passage-way for oil, 15, formed in the base 5, and oil-inlet passage-ways 16 lead from the oil-cup 1 to this central passageway 15. The rod 12 serves to check and control the oil to a dropby-drop feed from the cup and by its adjustment to regulate the quantity of each drop.

Leading into the chamber formed by the A hexagon nut base 5 is an air-inlet opening 16 for the purpose of preventing a vacuum in said chamber. Within the base portion 5 is avertical glass sight-feed tube, which is exposed to View by the circular sight-opening 17, cut out in the wall of the base 5.

Beneath the oil-dropper 14 is a main valve 19, mounted so as to freely move within the tube 17 and having the surface of its upper end countersunk to form an oil-catching basin 20, with which communicates a passageway or passage-ways 2]., leading through the valve to the outer edge thereof, so as to con vey the oil to a longitudinal channel or channels 22 on the exterior of the valve-stem. At its lower end the valve-stem carries a head 23, adapted to seat when the valve is carried upwardly against the conical upper face of chamber 24, formed in the lower part of the base portion 5, to the lower end of which chamber the valve is adapted to drop in its oil-cut-off movement.

The valve 19 is made hollow and receives within the stem a vertically-movable auxiliary valve 25, which is provided with a longitudinal slot 26, engaging a cross-pin 27 on the main valve, thus permittin free vertical movement of the auxiliary va ve within the main valve.

Between the upper end of the valve 25 and the inner portion of the main valve is confined a coiled spring 28, which tends to separate the valves and which aids in holding the main valve tightly in its seat when the valve is forced upward and acts to quickly open the auxiliary valve when the pressure is removed. At its lower end the valve 25 is provided with a valve-head 29, adapted to seat in and close and open the upper end of a chamber 30 in a standard or mounting base 31, which forms the means whereby the lubricator is secured to the cylinder or other pressure member to be lubricated. The base 5 is secured to this standard by a screw-threaded connection 32. The tubular guideway in which the stem of the valve 19 moves is channeled or widened sufficiently to permit of the passage of oil through the same.

The operation of the device is as follows: The feed-regulator 12 being set to the desired adjustment, oil will drop from the cup past the dropper and through the sight-feed tube on to the basin 20 of main valve 19, and the oil will pass throu h said valve 19 into the channels 22 into the chamber 24;. Upon a pressure impulse in the cylinder to which the lubricator is attached the auxiliary valve 25 of gravity, the atmospheric pressure obtained by the air-inlets preventing any vacuum above the valves that would tend to check their descent. In the descent of the main valve 19 sufiicient oil will escape from the passage-ways 22 past the head of the valve and into chamber 30 to provide the proper intermittent supply of lubrication, and then when the said valve 19 is seated in its lower seat this supply will be out off. It is important in valves of this type that absolute security against the entrance of the pressure mediumwhether gas, steam, or air-to the oil-cup, the neck-connecting base and cup, or to the sight-feed be provided, and this security is obtained by the two-valve arrangement of my invention. The connection between the valves not only permits an independent action of the auxiliary valve, but also by means of the interposed spring the opening and closing movements of the valves are greatly accelerated.

It is clear that various changes in the details of the device may be made without departing from the principle of my invention.

Having thus described my invention, what I claim is 1. A lubricator for an intermittent-pressure device, having a main cut-ofi valve, an auxiliary valve movable independently of the main valve, said main valve movable downward by gravity to cut off the oil-supply and said auxiliary valve movable upward by pressure, and means to close said main valve against said pressure by the said movement of the auxiliary valve ,substantially as described.

2. A lubricator for an intermittent-pres sure device having an oil-cup, and a communicating passage-way between said cup and device, a hollow main cut-ofi valve in said passage-way normally seated by gravity to cut off the supply of oil to the device, anauxiliary valve seated within said main valve, and operated by the pressure to cut off the communication with the device, said main valve being operated by said auxiliary valve to close the passage-way against said pressure, and an accelerating-spring confined between said valves, substantially as described.

3. A lubricator for an intermittent-pressure device, having an oil-cup, and a passageway between said cup and device, said passage-way having an oil-chamber, a main cutofi valve in said passage-way, an auxiliary valve below the main valve having a movement independent thereof, said main valve having a valve-head extending into said chamber, there being seats for said valve at the upper and lower ends of said chamber, said main valve-head being movable by gravity to its lower seat to cut oil the supply of oil, and movable by the pressure-operated auxiliary valve to its upper seat to cutoff the pressure, substantially as described.

4. A lubricator for an intermittent-pressure device having an oil-cup, a main cut-off valve movable by gravity to cut off the oilsupply and movable by the pressure to cut off the pressure, said main valve having a basin in its upper end to receive the oil from said oil-cup and having passage-ways leading from said basin, and an auxiliary valve loosely connected to said main valve, substantially as described.

In testimony whereof I affix my signatur in presence of two subscribing witnesses.

LEWIS GLEASON Witnesses:

GEO. MALONEY, ROBERT N. SrEER.

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