US453372A - mccanna - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. J. I'. MGCANNA.

LUBRIGATOR.

No. 453,372. Patentedune 2,1891.

- f my (No Model.) 2 Shetfs-SheeJ 2.

J. F. MOOANNA.

LUBRIGATOR.

No. 453,372. Patented June 2,1891.

y rn

UNITED STATES PATENT OFFICE.

JOHFA1 F. MCCANNA, CHIC-AGO, ILLINOIS, ASSIGNOR OF' OYE-HALF TO I BENJAMIN T. MCOANNA, OF SAME PLACE.

LUB'RICATOR.

i' SPECIFICATION forming part of Letters Patent No. 453,372, dated. June 2, 1891.

Application filed October 24, 11890.

serial No. 369,173. cio' modern To all@ whom, it may concern: Be 1t known that L-JOHN F. MCCANNA, a

` citizen of the United States, residing at Chicago, in the county ot Cookand State of Illinols, have invented certain new and useful Improvements in Lubricators, which are fully set forth in the following specification, reference being hadto the accompanying drawings, 1 n which#- Figure 1 represents a vertical section-of a lubrieator embodying my invention; Fig. 2, a plan section of the same, taken on the line 2 2 of Fig. 1;.Fig. 3, a front elevation of the sa1ne,partly in section, on the broken line 3 3 of Fig. 1; Fig. 4, a detail plan section taken on theline 4 4 of Fig. 1, and Fig. 5 adetail section taken en the line 5 5 of Fig. 3.

My invention relates to alubricator for the purpose of feeding oil or other lubricatingliquid to' the cylinders of steam-engines or elsewhere, or different machines where it is y 'desired'to obtain a small but steady supply of the lubricating-liquid.

`The invention relates vto lubricators of the pump order-that is,.in which the feed ,isobtained bythe action of aplunger something llke a pum p-and my improvements relate particularly to the' devices for reciprocating the plunger and the valve mechanism, th rough which the oil is fed to the cylinder.

I will now proceed to describe in detail the construction and operation-of a lubricator embodying my invention in one practical form, and will then point out more definitely in 'claims theparticular improvements which I believe to be'new and wishY to secure by Letters Patent.

Infthe drawings,` A represents the cup for the lubricating material, which 'is preferably of glass and cylindrical in form. This cup is held between a bottom a and a top a in a well-known way, these parts being secured by means of a tube B, the lower yend 'of which is' threaded into a suitable seat inthe bottom,

'while the upper end passes up through the v top, and ablock C, seated on the latter, and is fastened in position by a nut b, screwed upon its upperend, which is also threaded,this nut being set down rmlyon the block, as seen in Fig. 1 of the ldrawings.

i From the central portion of the 'bottom a, depends acasing D, which is of suitable thickness to. contain the valve-seats and ducts ot' `t-he feed mechanism, and extends diametrically nearly across the cup-bottom, as seen in Figs. 2 and 3. This part may be called the valve-casing and is preferably cast in one piece with the bottom. At one side it is pro- `vided with awide horizontal flange or foot D', by means of which the lubricator is fastened YVto its support wherever located. In the bottom of this casing are two large circular open- These openings entend directly up-l short cylindrical plugs threaded externally and adapted to fit the threaded openings d.

The upper ends of these valve-seats are prof vided with exterior bevels e, which are adapted to iit the interior bevels d2, and thereby perfectly seat the valves when they are turned into place, as seen in Fig. 2. These valve-v seats are provided with central recesses e', boreddown into them from their upper ends,` the mouths of these recesses being somewhat aring, and each valve is provided with a side aperture e2, leading out from this central recess.

A duct a2 leads down from the oil-cup into the bottom and the valve-casing near one end of the latter, aud opens at its lower end into the opening d for the valve-seat E,being located so that when this valve is seated the duct will register with the side' aperture c2 therein ,thus makin g communication between the interior of the oil-cup and the central re` cess in the valve-seat E. The central cham ber d opens at its lower portion by an aperture d3 into the side of the opening d, in which `the valve-seat E is fitted, and when this plug is properly seated thisopening registers with the side aperture e2 therein, thus establishing' communication `between the central chamber 1 and the central recess in the valveseat E. This central chamber also connects with the tu-be B by means of a short duet as, extending down from the lower end of this tube v through the cup-bottom in'to the said central chamber.

As already stated, the upper end ofthe opening'in which is seated the valve-plug E opens into a side duct d4. ,"h'is communica` 1o tion is direct, and this duct is in the lend of the casing opposite to that of the duct a?, leading out from the oil-cu p, and extends outward from the said valve-seat'E to the end of the casing. The duct u? is the feed-duct from the oil-cup to the valve mechanism, and the duct d4 is the feed-d uct through which oil is delivered from the valve mechanism to the cylinder by a pipe or any other suitable device connected with this duct at its outer end. Valves F and F are seated, respectively, uporhe seats E andE. lThese valves are ordinary check-valves, and, as shown in the drawings, are simple gravity-valves. They consist of a convex head j f and stem f2 f3, z 5 the latter extending upward across the chamber d and duct d'1, respectively, and are received in suitable sockets or recesses f4 f5, bored upward through the casing into the cup-bottom and of suiicient depth to permit 3o vertical play ot the valve-stems therein. The convex heads of these valves find suitable seats in the flaring mouths of the recesses in their respective valve-seats, as seen in Fig. 2, and. are held to these seats by gravity and at 3 5 the same time are free to rise when this force is overcome by pressure underneath. The lower ends of the valve-seats E and E are provided with small square heads, so that they maybe readily turned out from the casing by 4o means of a wrench, or any other ordinary expedient may be adopted for readily removing` these plugs. i Each of them is covered by a cap E2, which is threaded internally, so as to be turned upon the projecting end ,of the plugs until firmly seated on the bottom of the easing, thus covering and protecting the end of these seat-plugs and securing them in position. lhe upper end of the tube li is covered and 5o protected by a cap B', which is provided with a threaded socket, whereby iiis adapted to be turned upon the upper threaded end of the tube. This tube-cap is perforated for the accommodation of the plunger G, which is fitted within the tube and extends down through the latter into the short duct c, leading tothe central chamberin the casing. This plunger is somewhat smaller than the tube, and is extended up through the tube-cap, and 6o at its upperend is connected to a crank-wheel ll by attachment to the crank-pin h thereof in the usual way. The 'tube-cap may, if desired, be provided with a stuffingbox b', through which the plunger passes. The journal h of the crank-wheel is mounted in a snitable bearing at the upper end 'of a supporting arm or post I, its upper end being enlarged somewhat to give abroad bearing, as

seen in Fig. 1Q p The block C is provided at the rear with a round stud c, which serves as a journal-pin for thelower end t" ofthe post I, this end being also enlarged somewhatand perforated so as to be fitted loosely upon the said stud-journal. The post when mounted on this stud is held in position by any suitable device. In the drawings a cap-washer c is shown,\which is secured 'to the end of the pin bya screw c2. The journal of the crank-wheel may also be secured by a similar device. There is shown in Fig. 1 a similar washer-cap h2, fastened to the louter end of the journal by a' screw h3. It will be noticed that the supporting-post I is free to swing upon its journal-pin, thereby providing' for a free vibration to accommodate the lateral movement of the crank-pin .as the crank-wheel is rotated, as will nowbe described. The periphery of the crank-wheel is serrated, the notches or serratious 71.4 extending entirely around the wheel.

The pawl-lever J is mounted at its inner end loosely upon'the journal of the crank.

wheel, as seen in Fig. l, being arranged, as here shown, between the wheel and its supporting-post. lThis lever extends outward to one side of the wheel in a horizontal direction, and is provided with a spring-pawl j, pivoted to the lever and arranged to engage with the notched periphery of the crankwheel, as seen in Fig. The upward vibration of this lever will obviously turn the crank-wheel a certain distance, while upon its lower stroke it will'be ineffective, the pawl slipping over the teeth on the wheel. In order to vibrate vthe pawl-lever, a pitman K is connected to it at any suitable point beyond the wheel, this pitman being at its lower end connected to any moving part of the engine or other machine which will give the proper reciprocation to thepit-man vfor vibrating the pawl-lever. l

The entire pitman and its actuating 'device are not here shown, as no specific device is intended, andthis mode of driving the crankwheel isalready known in this type of lubricator. The connection between the pitman and pawl-lever is made by a conneeting-p`iece k, which is forked to receive a collar 7c', which is slipped upon the lever and is movable back and forth thereon. 'lhe collar is mounted in the fork by means of pivot-pins 7c?, which may be conical, if desired, thus providing a kind.

of gimbal-joint, which evidently'will accommodate the movements of the two parts. The collar is fastened to the lever at any desired point by means of a set-screw /',thus provid-l ing for an adjustment of the connection upon the lever to regulate the throw. A stationary pawl L is mounted on the supporting-post,

l'OO

I'IS

rse

beinfr fixed onan arm ro'ectinnr therefrom' in such position as to engage with the teeth on the crank-wheel on the lower side of the latter opposite to the actuatingpawl y, as seen in Fig. 23. This pawl is simply for the piii'- pose of preventing' any back movement of the wheel. K

At the inlet end of the valve-casinga conical plug .M is fitted into a similarly shaped hole m, bored directly inward into and a little beyond the inlet-duct a2. This plug is provided with a longitudinal chamber or duct in and a cross-port m2, running through it near its inner end, and a second port m3, leading out from its chamber near the outer end thereof, and another port ym", leading into the inner end of the Vchamber on the side of the ,plug opposite tothe port m3. A duct d5 extends downward from this valve through this part of the casing, with which the outer port m3 may be caused to register by suitably turning the plug, which is provided with a handle m5 for this purpose. This plug therefore serves as avalve for drawing off the contents of the oil-cup and is held in position by a stuingcap M', threaded upon the end of a boss, through which the plug enters.

The cover of the oil-cup is provided with a lling-opening, which is closed by a plug N, suitably fitted to` this opening n in the cup. This plug is provided with a small duct n', which admits air to the' interior `of the Vcup above the oil, and there is connected to the plug on theinside of the cup a little ieceptacle n2, of wire-gauze or any other suitable material, for the purpose of catching andretaining any dirt which may be'contained in the lubricatorl Y.

The operation of this lubricator is as fo'llows: It being set upv in place upon an engine or elsewhere and its actuating devices properly connected, and the valve M being in position, as shown in Fig. 1, it is evident that the vibration of the pawl-lever will gradually turn the crank-wheel by an intermittent motion and thereby slowly raise the plunger by a similar movement. The-plunger being in xed vertical bearings must, of

course, move up and down in the samestraight line.- This movement is provided for by the freely-swinging post on which the crank-wheel is mounted, this post moving laterally to one side or the other` with each movement of the crank-wheel under the stress of the plunger held vertically. The upward movement of the plunger tends, of course, to produce a slight vacuum with every successive movement, and therefore a small quantity of oil will be admitted to the central chamber d with every upward movement of the plunger, the oil from the cup flowing down through the inlet-duct -into the central recess in the valve-seat E, and raising the valve F, finding its way into this chamber. As soon as the crank-pin of the crank-wheel reaches its highest point the further movevment of the wheel will, of course, begin to depress the pin, and so depress the plunger by a step-by-step movement. This downward movein'ntbf the plunger will obviously force a little oil with each step outward from the central eli-amber into the recess in the valvescat E', and force the valve F thence into the outlet-duct d4, and thence to lthe cylinder.

It will be seen that the entire valve mechanism is outside and below the oil-cup. It will also beiscen that under the construction described above the valve-seats and valves can readily be removed for repairs, cleaning, or any other purpose. This is accomplished by simply removing the caps of the valveseats and then unscrewing the latter, when, of course, the valves will also drop out. The contents of the oil-cup can be drawn off at any time by rsimply turning the valve M so that the port m4 will register with the duct leading into the oil-cup, when, obviously, the

port m3 will register with the duct d5, and

connection is atonce made between the interior of the cup and the outer air, and of course theliquid in the cup will flow outward.

The freely-swinging support for the crank- Wheel is a very important improvement, for it provides for the required lateral movement of the crank-wheel with very little friction, and at the same timeprovides a stable support for this wheel.

In some details of construction changes may be made, so that I do not wish to be understood as limiting my invention to the precise construction in all respects as herein shownand described..

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

l. In a pump-lubricator having an oil-tank, valves, and passages for the oil, the plunger, in combination with a crank-wheel tn wh'ich the plunger is connected, the freely-swinging pivoted support on which the crank-wheel is mounted, and mechanism for imparting an intermittent rotary movement to said wheel, substantially as and for the purposes Specined.

2'. In a puinp-lubricator having an oil-tank, valves, and passages for the oil, a supportingblock C, in combination with the swinging post I, journaled at its lower end to said post, the crank-wheel H, mounted on the upper end of said post, the plunger G, .connected at itsv upper end to the crank-pin of said wheel, and

the vibrating pawl-lever J, provided with a pawl adapted to engage with the rateheted periphery of -tlie crank-wheel, substantially as vandfor th'e purposes specified.

3. In a pump-lubricator having valves and oil-passages, the oil-cup, in combination with Y the tube B,-ixed in said cup, the tube-cap B',

the plunger G, passing down through said cap, the crank-wheel H, to which said plunger is connected, the swinging post I, on which said crank-wheel is mounted, and means for operating the crank-wheel, substantially as and for the purposes specified.

4. The oil-cup, in combination with the valve-casing D, depending from the bottom of said cup and provided with openings d in the bottom thereof, the valve-seats E E', adapted IOO IIO

to be fitted into said openings, said valve seat-s beinfr provided with connecting lateral and' vertical ports, and the valves F F, whereby said valve-seats and valves may be readily removed from the easing,substantially as sind for the purposes specified.

5. In a. pump-lubricator, the oil-cup, in combination with the valve-casing D, depending frolnthe bottom thereof and provided with inlet-duet a2, leading from the oil-cup, central duct or chamber d and outlet-duct d4, t-he plunger and plunger-tube', opening at its lower end into the' central chamber d', the valve-seats E E', provided with central recesses and side apertures eiconnecti'ng therewith, and the valves F F', substantially as and for the purposes specified.

6. The vdlvefasing D, depending from the 4bottom of the oIl-cnpaniprovided with thethreaded seatbpenings (l, in combination with 2 0 the valveseats E E', threaded to fit said openings and provided with central recesses e', and gravity-valves F F', seated on the inner ends of said valve-seats to close the mouths of said recesses, substantially as and for the purposes Specified.

7. The 0il-eup, in combination with the. valve-casing D, provided with the inlet-duct h2 and the duct d5, the hollow valve M, provided with 4crossfports m, side port m8, 1eading into the letter, and port m4 at the opposite end and side of the valve, substantially as andfor the purposes specified.

JOHN F. McoANNA.

Witnesses:

@AWE BENJ. T. MCCANNA.

Images