US1550970A

US1550970A - Lubricator for multistage compressors

Info

Publication number: US1550970A
Application number: US10863A
Authority: US
Inventors: Quay Maylon La
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-02-21
Filing date: 1925-02-21
Publication date: 1925-08-25
Anticipated expiration: 1942-08-25

Description

Aug. 25, 1925.

M. LA QUAY LUBRIGATOR FOR .MULTISTAGE COMPRESSORS Filed Feb.'21, 1925 lea, nuaarcaru-- i 1 MAYLON LA QUAY, 0F BATTLE GREEK, MICHIGAN.

LUBRICATOR FOR MULTISTAGE GOMIPBESSORS.

Application filed February 21, 1925. Serial No. 10,863.

To all whom it may concern:

Be it known that I, MAYLON LA QUAY, a citizen of the United States, residing at Battle Creek, county of Calhoun, State of Michigan, have invented certain new and useful Improvements in Lubricators for Multistage Compressors, of which the following is a specification.

This invention relates to improvements in lubricators for multistage compressors.

This application is a continuation in part of my application for Letters Patent filed July 7, 1924, Serial No. 724,733.

My improved lubricator is especially designed by me for use with compressors of air brake apparatus and I have illustrated my improvements as embodied on such an apparatus. My improvements are, however, readily adapted for multistage compressors designed for other uses.

The main objects of my invention are:

First, to provide an improved lubricator for compressors by means of which the lubricant is uniformly fed to the cylinders in desired quantities.

Second, to provide an improved lubricator which is not likely to become inoperative or clogged in use.

Third, to provide an improved lubricator which does not flood when idle.

Objects relating to details and economies of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. I is a side elevation of a compressor embodying the features of my invention, the parts being shown mainly in conventional form.

Fig. II is a vertical section on a line corrg/s ponding to line 2-2 of Figs. I, III and I Fig. III is a plan view of the lubricant receptacle with the cap removed.

Fig. IV is a detail section on a line corresponding to line 4t4 of Fig. II.

In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, 1, 1 represent the steam cylinders, 2 the high pressure pump cylinder and 3 the low pressure pump cylinder. The details of the valves and connections for the cylinders are not illustrated as they form no part of my invention.

My improved lubricator is supported by a bracket l adapted to be attached by one or more of the head screws 5 of one of the steam cylinders. The lubricant receptacle 6 is secured to this bracket by the screws 7 The lubricant chamber 8 of the receptacle is provided with a closure plug 9 through which the receptacle is filled.

Formed in the walls of th receptacle are

passages

10 and 11, the passage 10 being connected to the low pressure cylinder by means of the pipe 12 which is, in effect, a part of the passage, and the passage 11 being connected to the high pressure cylinder by the pipe 13 which is in effect a part of the passage 11.

The passage 10 communicates with the chamber 8 through the restricted passage 14 and is provided with a check valve 15 seating towards the cylinder, that is, acting to prevent return to the cylinder through the passage 10. The passage 11 communicates with the top of the lubricant chamber through the restricted connection 16 in the top of the receptacle and the coacting passage 17 in the cap or closure. The passage 16 opens to a segmental groove 18 in the top of the receptacle thereby adapting the structure to such variations as occur in starting the threads or variations in cutting the threads.

The passage 11 is provided with an upwardly seating valve 19 in advance of the restrictions, this upwardly seating valve preventing the air from the high pressure cylinder entering the lubricant chamber on the work stroke.

In the embodiment illustrated the valve seat 19 is formed in a plug 20 threaded tacle.

cylinder 21 having an enlargement 2:2 in the low pressure end thereof.

The ends of the cylinder are open to the

passages

10 and 11. The cylinder is provided with an inlet connection to the lubricant chamber which is, in the embodiment illustrated, a pipe 23 which extends upwardly into the receptacle and into the closure 19 which is chambered to receive the same. The pipe 23 is provided with inlet port-s 24 adjacent the top of the receptacle.

The plunger 25 is provided with a head portion 26 coacting with the enlarges portion 22 of the cylinder. This head portion has a port 27 therein disposed so that it is closed when the head portion of the plunger is at the inner end of the enlar ement ot the cylinder as shown in Fig. 11.

The outstroke of the plunger is limited by the adjustable stop 28 and by adjusting this stop the feed may be regulated to a considerable degree. This stop has a restricted opening 29 therein so that there is a restriction between the feed cylinder and the low compression cylinder. 1

A restricting member 30 having a small opening 31 therein is disposed between the feed cylinder and the high pressure cylinder of the compressor.

With the parts thus arranged, on the upstroke of the low pressure cylinder piston the plunger 25 is seated closing the port 2? and the air is forced past the check valve 15 of the passage 10 into the lubricant rcep- On the upstroke of the high pressure cylinder piston the air is kept from passing to the lubricant receptacle by the check valve 19.

The lubricant is heated to a considerable temperature in practice and this, with the action of the air forced in as stated from the low pressure cylinder, atomizes the lubrie-ant and forces it through the ports 2-1: to the plunger cylinder 21 and also a portion of it is forced through the restricted passage 16 past the valve 19, which is then rising on the non-circular support as shovm in Fig. IV, and through the restriction 31 to the high pressure cylinder, a cer ain quantity of lubricant being also drawn on the down-stroke of the high pressure cylinder piston from the cylinder 21.

On the rip-stroke of the high pressure cylinder the plunger 25 is 'iiOFCGil toward the right and lubricant forced by the air from the high pressure cylinder into the low pressure cylinder.

My improved lubricator is found highly efiicient resulting in effective lubrication without an xcess of lubrication.

I have illustrated and described my inn pro-vements in a simple and practical embodiment and as especially designed for compressors used in brake systems. I have not attempted to illustrate or show certain embodiments or adaptations which l. contemplate as I believe this disclosure will enable the application of my improvements as may be desired.

Having thus described my invention what 1 claim as new and desire to secure by Letters Patent is:

l. The combination with a compressor comprising high and low pressure cylinders, of a lubricant receptacle with high and low pressure cylinder passages open i'ig to the top oi the receptacle, the low pressure cylinder passage being provided with a return check valve and the high pressure cylinder passage being provided with an out-stroke check *alve, there being restrictions in the passages between said valves and the lubricant receptacle, a feed cylinder communicating at its ends to said passages, said tt'ecd cylinder being enlarged at the low pressure end thereof, there being restrictions in said passages between said feed cylinder and said con'ipressncylinders, an inlet conduit for said feed cylinder opening to said lubricant receptacle at the top thereof, and a plunger in said feed cylinder having a head reacting with the enlarged portion of the cylinder, said head having a port therethrough disposed so that it is closed when the head oi the plunger is at the inner end of the enlarged portion of the cylinder.

2. T he combination with a compressor comprising high and low pressure cylinders, of a lubricant receptacle with high and low pressure cylinder passages, a feed cylinder communicating at its ends to said passage, said feet cylinder being enlarged at the low pressure end thereof, an inlet conduit for said teed cylincer opening to said lubricant receptacle at the top thereof, and a plunger in said teed cylinder having a head coactii with the enlarged portion of the cylinder, said head having a port therethrough disposed so that it is closed when the head of the plunger is at the inner end or" the enlarged portion of the cylinder.

3. The combination with a compressor comprising high and low pressure cylinders of a lubricant receptacle with high and low pressure cylinder passages opening to the top of the receptacle, the low pressure cylinder passage being provided with a return check valve, the l ressure cylinder passage being provided witl an out-stroke check valve, there being restrictions in the passages between said valves and the lubricant receptacle, afeed cylinder having an inlet connection to said receptacle and communicating at its ends to said passages, i. rid feed cylinder being enlar ed at the low pressure end thereof, there being restrictions in said passages between said feed cylinder and said compressor cylinders, and a plunger in said feed cylinder having a head coacting with the enlarged portion of the cylinder.

4. The combination with a compressor comprising high and low pressure cylinders, of a lubricant receptacle with high and low pressure cylinder passages connected to said high and low pressure cylinders and opening to the top of said lubricant chamber, a feed cylinder having an inlet connection to said receptacle and communicating at its ends to said passages, said feed cylinder being enlarged at the low pressure end thereof, and a plunger in said feed cylinder having a head coacting with the enlarged portion of the cylinder, said head having a port therethrough disposed so that it is closed when the head of the plunger is at the inner end of the enlarged portion of the cylinder.

5. The combination with a compressor comprising high and low pressure cylinders, of a lubricant receptacle with high and low pressure cylinder passages connected to said high and low pressure cylinders and opening to the top of the lubricant chamber and also through the top wall thereof, a closure cap for said lubricant chamber adapted also to cover the outer ends of said passages, a feed cylinder having an inlet connection to said receptacle and communicating at its ends to said passages, said feed cylinder being enlarged at the low pressure end thereof, and a plunger in said cylinder having a head coacting with the enlarged portion of the cylinder.

6. A lubricator for multistage compressors comprising a lubricant receptacle with high and low pressure cylinder passages communicating with the top of said receptacle, the low pressure passage having a return check valve therein, a feed cylinder having a feed connection to said receptacle and opening at its ends to said passages and having an enlargement at the low pressure end thereof, a plunger having a head portion coacting with the enlarged portion of said cylinder, and having a port therethrough disposed so that it is closed when the head is at the inner end of said enlarged portion of said cylinder, and an adjustable stop at the head end of said plunger.

7. A lubricator for multistage compressors comprising a lubricant receptacle with high and low pressure cylinder passages communicating with the top of said receptacle, a feed cylinder having a feed connec tion to said receptacle and opening at its .ends to said passages and having an enlargement at the low pressure end thereof, a plunger having a head portion coacting with the enlarged portion of said cylinder, and an adjustable stop for said plunger.

8. A lubricator for multistage compressors comprising a lubricant receptacle with high and low pressure cylinder passages communicating with the top of said receptacle, a feed cylinder having a feed connec tion to said receptacle and opening at its ends to said passages and having an enlargement at the low pressure end thereof, and a plunger having a head portion coacting with the enlarged portion of said cylinder, and having a port therethrough disposed so that it is closed when the head is at the inner end of said enlarged portion of said cylinder.

9. The combination with a compressor comprising high and low pressure cylinders, of a lubricant receptacle with high and low pressure cylinder passages connected to said high and low pressure cylinders and opening to the top of said lubricant receptacle, said low pressure passage having a return check valve, a feed cylinder having a feed connection to said receptacle and communicating at its ends to said passages, and a plunger in said cylinder.

10. A lubricator for multistage compressors comprising a lubricant receptacle with high and low pressure cylinder passages communicating with the top of said receptacle, the low pressure passage having a return check valve therein, a cylinder having an inlet opening to said receptacle and opening at its ends to said passages and having an enlargement at the low pressure passage end thereof, and a plunger having a head portion coacting with the enlarged portion of said cylinder and having a port therethrough disposed so that it is closed when the head is at the inner end of said enlarged portion of said cylinder.

11. A lubricator for multistage compressors comprising a lubricant receptacle with high and low pressure cylinder passages communicating with the top of said receptacle, a cylinder having an inlet opening to said receptacle and opening at its ends to said passages and having an enlargement at the low pressure passage end thereof, and a plunger having a head portion coacting with the enlarged portion of said cylinder and having a, port therethrough disposed so that it is closed when the head is at the inner end of said enlarged portion of said cylinder.

12. A lubricator for multistage compressors comprising a lubricant receptacle with high and low pressure cylinder passages communicating with the top of said receptacle, the low pressure passage having a return check valve therein, a cylinder having an inlet connection to said receptacle, said cylinder being open at its ends to said passages and having an enlargement at the low pressure passage end thereof, and a plunger having a head portion coacting with the enlarged portion of said cylinder.

In witness whereof I have hereunto set in hand.

y MAYLON LA QUAY.