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Publication numberUS2583457 A
Publication typeGrant
Publication dateJan 22, 1952
Filing dateMar 29, 1949
Priority dateApr 13, 1948
Publication numberUS 2583457 A, US 2583457A, US-A-2583457, US2583457 A, US2583457A
InventorsHarcourt Woodall Raymond
Original AssigneeRotax Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2583457 A
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Description  (OCR text may contain errors)

Jan. 22, 1952 R. H. wooDALL LUBRICATOR 2 SHEETS-SHEET l Filed March 29, 1949 LUBRICATOR 2/ SHEETS-SHEET 2 Filed March 29, 1949 Fig Patented Jan. 22, 1952 LUBRICATOR Raymond Harcourt Woodall, Wembley,. England,

assignor to Rotax Limted, London, England' Application March 29, 1949, serial Na. 84,085

In Great Britain April .13, 1948 This invention has for its object to provide an improved lubricator for supplying lubricant to the rotary cam of a contact breaker in an electric-spark ignition apparatus, or to any other analogous rotary part of a mechanism.

The invention comprises the combination of a lubricant receptacle having an outlet at one end, a rigid porous body in the receptacle, a felt or like pad between the said end and the porous body, and a wick or the like extending through the said end.

In the accompanying drawings:

Figure l is a sectional side view, and Figure 2 an inverted sectional plan illustrating one embodiment of the invention, Figure 1 being taken on the line I-I of Figure 2, and Figure 2 being taken on the line 2-2 of Figure 1.

Figure 3 is a sectional side view illustrating another embodment.

Referring to Figures l and 2, the device there shown comprises a cylindrical lubricant receptacle a made from metal and having theren a window b formed by a glass or other transparent lining. Alternatively the body part may be made wholly or in part of transparent material. one end of the receptacle is provided an air vent, preferably consisting of a hollow stem c extending into the receptacle from a cover piece d, the length of the stem being such that in the event of inversion of the receptacle it can serve (with the adjacent part of the receptacle) to form a trap for retaining the lubricant. At the other end of the receptacle is formed an outlet, this consisting of an outwardly extending tube e of any convenient length. Adjacent to the outlet end of the receptacle is placed a thin pad of felt or other like absorbent material, and in contact with the inner side of this pad is placed a rigid porous body g of any convenient thickness. the said body consisting preferably of a block of sintered metal. 'I'he said block may at its periphery fit the receptacle closely (as shown), or it may be made of rather smaller diameter than the receptacle, in which case the annular space around it may be occupled by a thin layer of absorbent material.

Also the outlet tube e is occupied by a wiek h extending from the pad above mentioned, and projecting from the outlet tube, it being intended that the outer end of the wiek shall bear on the cam or other rotary body to be lubricated. The wick may be of brush-like form consisting of a bunch of bristles.

When in use the region of the receptacle lying between the upper side of the porous block and the inner end of the vent is occupied by a liquid lubricant i, and this is fed by absorption through the porous block to the absorbent pad which collects the lubricant from the adjacent vpart of the porous block and supplies it to the wiek. Maintenance of atmospheric air pressure in the receptacle is ensured by the vent, and in the event of inversion of the receptacle (such as may occur when the device is used on an -aircraft) escape of lubricant through the vent is prevented by the trap. H

To prevent dislodgement of the porous block from its proper position, a sheet metal retainer consisting of side pieces 7' extending from a plate lc, is placed between the block and the cover piece d.

In the modification illustrated by Figure 3, there is employed a hollow cylindrical sheet metal or other body part a of any convenient diameter and length. At one end the said part is provided with an Outlet e which may consist of a tube extending from that end. The other end is closed by a perforated plate or gauze m which is open to the atmosphere. In contact with the inner face of the outlet end of the body part is placed a felt or other pad of any convenient material, and the remainder of the enclosure is occupied by a block y of porous material, such as sintered metal, this being saturated with lubricant, and its volume being such as will store a quantity of lubricant adequate for the intended purpose.

In the porous block is formed a bore to receive a wiek h which fits the bore and extends through the pad and the outlet tube e, this arrangement being suitable when the length of the porous block is greater than its diameter. When it is more convenient to employ a shorter porous block having a correspondingly larger diameter, one or more holes are formed in different positions along the block in addition to a hole in alignment with the outlet tube. The additional hole or holes are each fitted with a wick as n terminatlng at one end at the pad its purpose being to supply lubricant from the porous body to the pad.

Either of the devices above described may be adapted to be mounted (as shown in Figure 3) on a stationary part o in proximity to the part to be lubricated, with the projecting end of the outlet wiek in contact with the said latter part.

When the device is made in accordance with Figures 1 and 2, the lubricant receptacle can be periodically replenished with lubricant. With the construction shown in Figure 3 the porous block is either discarded and replaced by another. or

one end, a rigid porous body arranged in the receptacle and spaced from the said end thereof, a wiek extending through the outlet, and an absorbent pad of fiexible material 'situated between the porous body and the said endv of the receptacle and in contact with both the porous body and the wick so that lubricant fed by absorption through the porous body is collected by the pad and supplied thereby to the wick.

2. A lubricating device as claimed in claim l, i;

in which the end of the receptaole remote from the outlet is provided with an inwardy extending air vent adapted to prevent escape of free lubricant on inversicn of the device.

3. A lubricating device comprising the combination of a hollow body part having an outletat one end, an absorbent pad in contact with the cutlet end of the body part, a rgid porous body in contact with the pad and extending to the other end of the body part, the said porous body 1' being provided with a pluraiity of holes, and

wicks occupying the said holes, one of the wcks extending through the pad and the outlet.

4. A lubricating device comprising in combination a lubricant receptacle having an outlet at one end, a rigid porous body arranged in the receptacle and spaced from the said end thereof, a wiek extending through the outlet, and an absorbent 'pad of fiexible material situated between and in contact with the porous body and the said end of the receptacle and also in contact with the wck so that lubricant fed by absorption through the porous body is collected by the pad and supplied thereby to the wiek, the latter being arranged to extend through the body and pad as well as through the outlet.


REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 179,558 High July 4, 1876 1,391,466 Fekete Sept. 20, 1921 `1,416,313l Astbury o May 16, 1922 1,462,174 Hale July 17, 1923 1,68'7,780 Neale Oct. 16, 1928 2,084156 Albrecht June 22, 1937 2526:3,047 Tognola Dec. 2, 1941 2.393,2'03 Tarbell Jan. 15, 1946

Patent Citations
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US179558 *Jun 12, 1876Jul 4, 1876 Improvement in osl-cups
US1391466 *Jan 20, 1920Sep 20, 1921 Oil-cup
US1416313 *Jun 3, 1921May 16, 1922John DexterCondenser-apron lubricator
US1462174 *Oct 31, 1921Jul 17, 1923Hale Lee MLubricating device
US1687780 *May 1, 1926Oct 16, 1928Gen Motors CorpPorous-metal plug for valve lubrication
US2084756 *Jul 9, 1936Jun 22, 1937George F AlbrechtSpinning ring
US2265047 *Oct 21, 1939Dec 2, 1941Bendix Aviat CorpLubricating means
US2393203 *Mar 27, 1943Jan 15, 1946John H ConantBearing
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3035337 *Mar 12, 1957May 22, 1962Robert Meierhofer FriedrichAutomatic machine for applying threaded closure caps to collapsible tubes and the like
US4062424 *Jul 11, 1975Dec 13, 1977Oil-Rite CorporationOiler assembly
US4077492 *Aug 24, 1976Mar 7, 1978Hiroyuki KanaiAutomatic lubricators for rings of a spinning machine
US4096924 *Apr 4, 1977Jun 27, 1978Oil-Rite CorporationOiler assembly
US4175642 *Jan 13, 1978Nov 27, 1979Trw Inc.Passive lubrication method and system
US4342375 *Dec 7, 1977Aug 3, 1982Oil-Rite CorporationPorous rod metering valve
US6105725 *May 28, 1998Aug 22, 2000General Motors CorporationLow displacement lubricator
US6474445 *Mar 22, 2002Nov 5, 2002Siemens Automotive CorporationPrecision non-contamination oiler
DE2637563A1 *Aug 20, 1976Feb 24, 1977Kanai HiroyukiVorrichtung zur automatischen ringschmierung von spinnmaschinen
DE2637563C2 *Aug 20, 1976Dec 16, 1982Kanai, Hiroyuki, Ashiya, Hyogo, JpTitle not available
U.S. Classification184/102, 118/267, 184/64
International ClassificationF16N7/00, F16N7/12
Cooperative ClassificationF16N7/12
European ClassificationF16N7/12