US1095654A - Sight-feed lubricator. - Google Patents

Description

J. F. MoGANNA.

SIGHT FEED LUBRIGATOR. APPLICATION FILED APBHZO, 1912 Patented May 5; 1914.

UNITED STATES PATENT clarion.

some I. anemia, or CHICAGO, ILLlIN OIS, ASSIGNOB. To mrnnmn muss MANUFAo- 'ronnw couran sr, or OHIGAGO,'ILL1INO1 IS, A CORPORATION or ILLINOIS.

sIfl-nT-FEED LUBBICATOB To all whom it may 013mm.-

' Be it "known that I, JOHN FQMQCANNA,

' a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois; have invented vcertain new anduseful Improvements in Sight-FeedLuricators of which the following. is a full, clear, and exact specification.

M invention is concerned with sight-feedlubricators for oilin the bearings of engines, etc, andis deslgned to. producela s mple but eflicient construction in which a singlfe pump for each bearin to be lubricated will not only pump the" oil to thebearing, but Will also serve tooperate a constant sight feed showin the amount of oil that is being pumped to the hearing. In most devices of time character heretoforev used, two" pumps have been necessaryto efiect thisr'e suit; but with my invention a sing1s Pump,'

- in combination with a supply well and a by t same pump moves t e well to furnish the sight feed, as wellas to sight-feed pipe leading into the'.well from the reservoir and terminating adjacent a, transparent portion ofTthe well, serves to produce the same results as the'two; umps heretofore. used. I In my invention; t ereie 1 the additional certainty that the same amount of oil is being umped', to the hearing as is indicated ll e sight feed, as the oil into the supply force it from the well to lubricate the bear 1n i to a sheet of drawings m which the same reference characters are used to designate identical parts in all thefigures'of Which,-

pum barrel'and well; while Fig. 2 Ba simi ar section through the pump barrel at right angles to the section shown in Fig. 1,.

reservoir must have atmospheric pressure on its upper surface, and to msure this I pro- Speclication of Letters Patent. Applicatienflled April 20, 1912. Serial No. 692,093.

g v I To illustrate my inventipn, I annex here" Figure' 1 isa vertical section through thefor this purpose. The cover 6 is likewise preferably a casting, and has; the central cylmderor barrel 9 which is connected by the passage 10 with the valve cylinder 11, on one side, and is similarly connected by the passage 12 With the well cylinder '13. The

check valve 145 which preferably takes thev form of a heavy steel ball, is located at the end of the passage 12 so as to permit ofthe 011 being drawn from thewell 13 into the Patented May 5,1914,

barrel 9, but so as to prevent its being forced in the opposite, direction by the piston '15 re-.

ci'procat-ing in the barrel, a wire 16 extend- 111g across the barrel above the valve l4flpreventing possible displacement of the latter.

The valve cylinder 11 is preferably provided the twq h'eck valves 17 and 18 seated there on,- wh1ch are preferably ofdiflerent sizes of steel balls, and which serve to permit of of the oil from the barrel 9 through 1; e pipe the forcin I 19 to. the point of discharge but w ich prevent the possible backward movement of the oil when the piston 15 is raised.- This pipe 19 is connected withthe valve cylinder 11 by means of the plug 29 screwed into the top of the cylinder and. barging a passage therethrough, and provided at, its, llpper end "with the stufling-box 21, y: which a liquid-tight connection is made between the 1pc 19 and the plug 20. l The upper endof t e pump barrel 9 issimilarly pr ovided -,witl1 the customary stuflipg box 22throughwh1ch the piston. 15 recip rocates. A shaft 23 1s journaled in suitable bearings formed in the casing, and" is preferably 'eci rocated by any suitable, means driven-by t e engine or machinery to be lubricated. An arm- 24 secured on the shaft 23 inside .of the reservoir 5 carries a pawl 25 .With pair of valve seats to accommodate,

which cod crates with the teeth of a ratchet wheel 26 o'o'sely mounted on the, shaft 23 and rigidly secured to an eccentric 27 cooperatin with the yoke 28 secured on the lower e the cover 6 and connected by the cross head 3.0 with the piston 15. By means of the stationary abutment 31 secured on, the piston 15 and the adjustable abutment or nut 32 threaded thereon and having a codperating'lock nut 33, the amount of lost inotion between the rod 29 and the piston 15 can be determined to regulate therate of fecd of the oil.

' vide one or more apertures 8 in the coverv Coming now to the sight-feed mechanism,

ofthe verticall (reciprocating rod '29 extending up throng which constitutes the essentially novel portion of my invention, the well cylinder 13 is provided above the ,cover 6 with a transparent portion which is preferably formed by using the glass cylinder 34 resting on the packing ring 35 seated on an annular surface surrounding the top of the cylinder 13.

A similar packing ring 36 rests on the top of the glass cylinder 34:, and a cylindrical cap 37 having cut-away portions 38 has 1ts lower endthreaded into the shallow recess into which the bottom of the glass cylin-' 1 upper end of the tube 39 iscurved, as at 40,

so that the oil passing from the reservoir into the well through the tube 39 Wlll fall,

' drop by drop, in front ofjthe transparent portion of the well, so that an observer can note the rate at which the oil is falling.

vThe operation of my'improved apparatus will be readily apparent, as when the pumppist'on is reciprocated by the mechanism described, the oil will be drawn from the bottom of the well through the passage 12 into the barrel 9, whence it will be discharged through the passage 10 into the pipe 19 leading to the part to be lubricated. As the oil is drawn from the air-tight well, the pressure of the air in the well above the level of the oil is reduced, and, as a consequence, the atmospheric pressure on the oil in the reservoir serves tov force-the latter up through the tube 39 and to deliver the oil, drop by drop, into the well at exactly the same rate as it is pumped therefrom by the reciprocation of the piston 15, thus giving an absolute and constant indication of the rateat which the oil is, being pumped.

As the oil falls from the pipe 39 into the well, it seemingly carries with it a small portion of the air in the well, so that in the course. of a month or so the height of the oil in the well rises to a point so as to interfere with the operationof the sight feed. To remedy this, some means must be provided for admitting air into the well sufiicient to cause the level of the oil in the well to .fall, and for this purpose I provide the screw 41 threaded into the top of the cap 37, and provided with the packing ring 42, so that when itis screwed up tight the well will be airtight. When the oil in the well has risen to a point to interfere with the'operation of'the sight feed, the screw 41 is losened until the air can enter the top of the well, and they operation of the pump continues as usual, without the sight feed, however, until the contents of the well have been lowered to the desired point, after which the screw 41 is tightened up and the operation of the sight feed resume lVhile I have shown and described my invention as embodied in the form which I at present consider best adapted to carry out pump-barrel and a supplywell cylinder,

formed therein, a valved passage connectin the bottom of the barrel and the supplywell cylinder, a valved passage leading from the barrel to the point to be lubricated, a glass cylinder adapted to form a continuation of the Well above the top of the cover, a cap for the cylinder secured to the cover forming an air-tight connection between the two cylinders, a sight-feed pipe leading from the bottom of the reservoir into the well and terminating in the glass portion, a pump piston reciprocating in the barrel, and means for reciprocating the piston.

2. In a sight-feed lubricator, the combination with a reservoir open to atmospheric pressure, of a cover therefor having a pump barrel and a supply-well cylinder formed therein, a valved passage connecting the bottom of the barrel and the supply-well cylinder, a valved passage leading from the bar rel to the point to be lubricated, a glass cylinder adapted to form a continuation ofthe well above the top of the cover, a cap for the cylinder secured to the cover forming an airtight connection between the two cylinders, a sight-feed pipe leading from the bottom of the reservoir into the well and terminating in the glass portion, a pump piston reciprocating in the barrel, means for recip- 'roca'ting the piston, and a screw in the top of the cap, for the purpose described. 3. In a sight-feed lubricator, the combina: tion with a reservoir open to atmospheric pressure, a cover for saidreservoir, an airtight supply-well carried by the cover and having a transparent portion extending above the same, an unobstructed sight-feed pipe leading. from" the bottom of the reservoir into the well and terminating adjacent the transparent portion, and capable of delivering oil up to the full capacity of the pump, a pump carried by the cover drawing its supply from the well, a passage connecting the well with the pump unobstructed as to the flow therethrough of the ,oil from the well to the plimp and serving at all i In witness whereof, I have hereunto set times to deliver oil to the pump up to the my hand and aflixed my seal, this tenth day full capacity at which the piston is workof April, A. D. 1912.

ing, a check valve. in said last mentioned JOHN F. MOCANNA. [11. s.] passage, means for operating the pump, and Witnesses: means for regulating the rate at which the JOHN HOWARD MGELROY,

pump operates to discharge the oil. MILDRED ELsNER.

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