US429340A - Oil-filtering apparatus - Google Patents

Description

(No Mode1.) y y J. DOONBR.

v OIL PILTERING APPARATUS. Y No. 429,340. Patented June 3, 1890:.

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UNITED STATES VATENT OFFICE.

JOHN DOONER, OF CHICAGO, ILLINOIS.

OIL-FI LTER! NG APPARATUS.

SPECIFICATION forming part of Letters APatent No. 429,340, dated J' une 3, 1890.

Application filed June 20, 1889. Serial No. 314,915. (No model.)

To all whom it may concern:

Be it known that I, JOHN DOONER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Oil-Filtering Apparatus, of

which I do declare the following to be a full,-

clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My present invention has for its object to.

provide improved mechanism whereby lowgrade or impure lubricating-oil may be filtered and purified before its use, and whereby also lubricating-oil that has been used and has thereby accumulated more or less impurities incident to use can be purified, so that it may be used over and over again for lubricating purposes. This object of invention I have accomplished by the novel features of construction hereinafter described,illustrated in the accompanying drawings, and particularly pointed out in the claims at the end of this specification.

Figure l is a perspective view of a purifying apparatus embodying my invention. Fig. 2 is an enlarged view partly in perspective and partly in central vertical section through my improved apparatus.

In the preferred embodiment of my invention there are four tanks, designated, re spectively, A, B, C, and D, the tanks A and B being sustained above the tank C by means of suitable uprights or standards 2 of convenient construction.- The tank A, which is shown as of cylindrical shape, is provided at its top with a removable cover a, that is preferably furnished with a supplemental lid or4 cover a', and in the bottom of this tank is located a heating-coil 3, that receives steam from a steam-pipe 4., a globe-valve 5 serving to control the admission of steam to the coil 3 and a similar valve 6 serving to control the escape of the steam into the waste-pipe 7, and consequently to regulate the pressure and temperature of the steam within the tank A.

\ From the main delivery* steam-pi pe et also ex- From this construction it will be seen that the temperature within each of the tanks A, B, and C can be regulated, for the purposes to be hereinafter stated. The tank Ais provided with suitable escape-cocks, (three of such cocks, designated as F, G, and H, being shown in the drawings,) and from beneath Aeach of these cocks leads a branch pipe 20, which serves to deliver the oil into a main pipe H', that dis- -charges into the top of the tank B. Within this tank B is placed a series of riftle plates or trays b, in any desired number, (tive being shown in the'drawings,) these trays being provided with transverse bars or riffies b', and being inclined in opposite direction, so that the oil delivered at one end of the top plate of thevseries shall flow over each of the succeeding plates before its final delivery into the lower portion of the tank B. The top of -the tank B is provided with a removable cover B', which may be lifted off when itis necessary to withdraw the rifiie-plates for the purpose of cleaning them,and by preference, also, this cover B is furnished witha supplemental lid or cover B2, which canbe lifted from time tovtime to permit the engineer to inspect the condition of the plates. In the lower portion of the tank B is placed a discharge-cock K, from which leads the pipe L, that serves to conduct the oil from the tank B to the top ofthe tank O. The top of the tank O is provided with a removable cover C', which can be withdrawn from time to time when it is necessary to remove the filter from the tank O for the purpose of cleaning or renewing it, and by preference, also, the cover C is furnished with one or more supplemental lids or covers O2, through which the engineer can inspect the condition of the filter within the tank C. The pipe Lleads into the cover C of the tank O, immediately above a funnel-shaped filter M, that is connected to v the upper end of the pipe m, that extends down to a point adjacent the bottom of the tank C, and uponA this pipe m is fixed the tilter O. This tilter O consists, preferably, of the upper and lower perforated plates or screens o and o and the intermediate pack ing of moss, palm-leaf, or the like, these perforated plates or screens o and o serving to retain the packing in proper position. In the upper portion of the tank C is placed an escape-cock P, which serves to deliver the oil through the top of the tank D. This tank D is by preference divided into the two compartments R and R', the compartment R being furnished with an inclined screen S, upon which the oil will be delivered as it passes through the escape-cock P. The partitionwall r, that divides the tank D into the compartments R and R', is cut away at its bottom and a screen S there placed serves to separate the lower portions of the two chambers of this tank. The upper portion of the tank D is provided with the hinged lids or covers D', which can be lifted from time to time to permit the cleaning of the tanks when necessary. Each of the tanks A, B, and C is furnished at its bottom with a waste-cock 30, that serves to conduct away the water that accumulates within the tank to the drainpipe W.

From the construction of parts as above deined, the operation of my improved apparatus will be seen to be as follows: The impul'e oil, either low-grade oil that has not been used or oil that has been collected after use upon the shafting, engine, or other machinery, is placed in the tank A, and steam is then admitted through the main steam-pipe 4 to the heating-coil 3 within the bottom of this tank, the admission and escape of the steam being controlled by the valves 5 and G. The oil will be allowed to slowly boil within the tank A for about two hours, more or less, according to its gravi ty and the amount of impurities contained therein, care being taken that it docs not boil over, and after the boil ing is completed it should beallowcd to stand for six hours, more or less, until the impurities settle. The cocks F, G, and H will then be successively opened and the oil will be allowed to pass .through the pipe Il onto the riliie-platcs b wit-hin the tank l. If, on open ing the cock II, it should be found that water escapes through such cock, then the escape cock 30 should be opened topermitthe water to escape until the body of oilfalls below the level of the cock II. By theboiling operation within the tank `A it will be found that the oil has been freed in great measure from much of its impurity, and as it passes slowly down the series of riiiieplates withinthetan k B the transverse bars or riliies b of these plates will serve to further arrest and collect the impurities from the oil before it finally passes into the lower portion of this tank B. It' desired, the tank B may beheated by turning the cocks 14C and l5 in such manner as to permit the passage of steam from the main steam-pipe Il through the coil or bend ll within the bottom of this tank. By opening the cock K in the lower portion of the tank B the oil will be next conducted into the pipe L through the cover C of the tank C and into the filtering-funnel M within this tank. This filtering-funnel M will aid in further removing the impurities from the oil, after which it will pass by the pipe m to the bottom of the tank C, when it will rise through the body of water in the bottom of the tank and up through the perforated plates o and o', and the intermediate packing of moss or palm leaf, until it reaches the upper portion of the tank. The water and oil within the tank C will be heated during this operation by the steam-coil 13. From the upper portion of the tank C the oil, now freed in great measure from its impurities, will be delivered through the escape-cock P into the top of the chamber R of the tank D, and will fall upon the screen S before passing to the bottom of this chamber. From the bottom of the chamber R the oil will pass through the screen S into the bottom of the chamber R', from which chamber it may be drawn oft' from time to time as needed for use through the cocks 26, 27, and 28. The tank D is furnished at its bottom with a waste-cock 40, which will serve to withdraw from the tank when necessary the water and impurities collected therein. y

The tanks A, B, C, and D may be constructed of any suitable material, although I prefer galvanized iron for the tanks A, B, and C and heavy block-tin for the tank D.

iVhen it is desired to clean the tanks, the pipe II, that connects the tank A with the tank B, will be disconnected,so that the cover of the tank D can be removed to permit the withdrawal of the riflie-plates therefrom, and in like manner the pipe L, that connects the tank B with the tank C, can be disconnected in order to permit the cover C of the tank C to be lifted olf, so that the iilter O can be withdrawn when the tank is to be cleaned or a new filter is to be substituted.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In an oil-liltering apparatus, the combination of a tank. A, provided with a steamheating pipe, whereby the boiling of the impure oil within the.tank may be effected, and provided with a discharge-cock for oil at a distance above its bottom and a wastecock for sediment and the like at its bottom, and a tank B, arranged beneath said tank A and having a pipe leading thereto from the discharge-cock of the tan kA at a distance above its bottom, whereby the partially-purified oil may be withdrawn from the tank A to be further purified within the tank I3, while the impurities resulting from the boiling' of the oil may be withdrawn from the bottom of the tank A and be prevented from passing into the tank B, substantially as described.

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1o A and B, whereby the oil, after having been boiled and allowed to settle Within the tank A, may be Withdrawn into tank B and passed over the ritiie-plates sufficiently reheated to secure tle desired fluidity, substantially as described.

JOHN DOONER.

Witnesses:

GEo. P. FISHER, J r., I. B. CARPENTER.

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