US1542044A

US1542044A - Oil cup

Info

Publication number: US1542044A
Application number: US653994A
Authority: US
Inventors: Dutro Leslie Carl
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-07-26
Filing date: 1923-07-26
Publication date: 1925-06-16
Anticipated expiration: 1942-06-16

Description

June 16, 1925. 1,542,044

L. C. DUTRO OIL CUP Filed July 26, 1923 16 iii o O 6 O 1/ WITNESSES v INVENT L e w 0. But I I v aka 5AM ,4 TTORNE Y8 Patented June 16, 1925.

UNITED STATES LESLIE CARL DUTRO, OF LONG BEJFUGH, CALIU'IFTBNIA. i

on. our.

Application filed July 26, 1923.

To all whom it my concern: I

Be it known that I, LESLIE CARL Do'rno, a citizen of the United States, and a resident of Long Beach, in the county of Los Angeles and State of California, have in' vented a new and Improved Oil Cup, of which the following is a full, clear and exact description.

This invention relates to oiling devices for engines either gas, air or steam and has for an object to provide an improved construction which will automatically feed a. given quantity of oil during the operation of the engine and will automatically stop the feeding of oil when the engine stops.

operating;

Another object of the invention is to provide an oil cup for engines wherein the quantity of oil fed into the engine is in proportion to the number of reciprocation in the piston of the engine. 3 A still further object of the invention is to provide an oil cup which may feed either warm or cold oil and which acts under the compression of the cylinder of the engine so that the feed is positive. y

In the accompanying drawing The figure is a longitudinal vertical section through part ofan engine cylinder and through an 'oil cup disclosing an embodiment of'the invention.

Referring to the accompanying drawing by numerals, 1 indicates the'cylinder of an engine of any desired type, .as for instance, an internal combustion engine, air or steam engine. Arranged in the engine is a piston 2 which mov es back and forth as the en gine operates. A tubular member 3 is threaded into the cylinder 1 near the compression end of the cylinder and preferably at the point where the head of thepiston stops before sai d piston changes its direction of travel whereby the end of the passage-way 4 is closed at the beginning of the power stroke but is shortly opened thereafter so that part of the power gaseous matter, as

for instance, air, steam or explosive mixture,

may enter the passage-way 4 and from thence pass the needle valve 5 so as to be discharged through the tube 6 into the cup 7. Preferabl the outer end of the tubular member 3 is out upwardly and is provided with a. threaded socket for receivin the threaded end 8 of the boss or hub 9 0 bottom 10, said bottom being connected in any desired manner with the side walls 111 of Serial No. 653,994.

the cup 7. Preferahly,'the side walls 11. are of glass so that the level of the oil may be readily observed while the bottom 10 is of metal and the hub 9 projects therefrom and presents a casing for theneedle valve 5 and a threaded socket for receiving the threaded lower end of the tube 6. The valve 5 is held in place in the usual manner of needle valves and may be adjusted to permit the discharge of any desired quantity of oil according to the pressure used in the cylinder 1. i

The pipe 6 is provided with, a number of apertures 12 for the free passageway of oil from the cup 7 into the pipe 8. A suitable cap or covering 15 is connected in any suitable manner to the upper ends of the walls 11, the entire cup 7 being soc-onnected together as to withstand an appreciable pressure.

In operation, when pressure is injected or generated in the pressure chamber 16, it will naturally move the piston 2 on its power stroke and some of the air, gas or explosive matter forming the impelling medium will enter the passage-way 4 and pass upwardly through the pipe 6 into the upper part of the cup 7 so as to provide pressure above the oil in the .cup. As soon as the power stroke to return, the pressure in the upper part of the cup 7 will then force a given quantit of oil into the cylinder. continues until the piston 2 closes the passageway 4 or until there is an equilibrium between the pressure in the cylinder .1 and in the cup 7. If the engine should stop with the piston 2 uncovering the passagewn y 4, oil will flow in until the rarefaction in the cup 7 is such that the pressure in the larger or smaller amount of oil may be caused to flow into the cylinder 1 by ad justing the needle valve 5 manually but when once adjusted only a certain amount will be fed in at each stroke of the piston.

has been completed and the. piston begins The flow of 011 The use of the needle valve 5 is to regulate the amount of gas, air or steam. passing through to the upper part of the cup. Naturally, the more that is allowed to pass through, the greater the pressure and the greater the amount of oil fed. It also acts as a friction device which will allow the passage of oil only when the pressure in the top of the cup accumulates and. is of sufiicient force to feed the oil before another impulse is received. The idea of forcing oil into the cylinder is important in that it helps the rings of the piston to maintain a tight joint. By actual test, it has been found that a cylinder not properly lubricated allows more of an impulse to pass the piston rings than when it is properly lubricated. This is due to the fact that the walls of the cylinder are completely covered with a thin film of oil when properly lubricated. When this film breaks up at any part, the piston rings are held away from the walls of the cylinder a very short distance and thereby this makes an opening through which the pressure from the explosion bide rushes. While probably very much of the explosion does not come through, yet there is quite an impulse or pressure formed between the first and second rings. This is varied according to the lubrication, suiticient lubrication allowing very little of the impulse to come through and, consequently, the arrangement of the needle valve 5 and the cup as described, permits a. substan tially accurate amount of oil to be fed according to the speed of the piston and also other conditions. It will be evident also that the cup will operate efiiciently on steam engines as well as air compressors.

In the case of steam engines, the cups are preferably placed just below the throttle and'the opening of the valve in the steam chest causes a slight fluctuation in the pressure which can be taken advantage of by regulating the needle valve 5.

What I claim is 1. An oil cup for lubricating engines, comprising a container formed with a bot tom having a boss or hub, said boss or hub having a threaded socket and a restricted passage-way extending from the socket, a needle valve arranged in said hub and adapted to restrict said passage-way according to the position of the valve, a tubular member screwed into said socket extending to near the top of said container, said tubular member having a plurality of apertures arranged therein at different levels. and a member having a restricted passageway conneeted with said hub and adapted to connect said cup with an engine cylinder at a point covered by the piston of the engine when starting its power stroke.

2. An oil cup for lubricating engines comprising a container having an apertured bottom, a tubular member connected with said bottom so as to discharge directly into the aperture in said bottom, said tubular member extending near the top of said container, said tubular member having apertures arranged at difierent levels, and a member having a restricted passageway connected with said bottom and adapted to connect said cup with an engine cylinder at a pointcovered by the piston of the engine when starting its power stroke.

LESLIE CARL DUTRO.