US1152520A - Lubricator. - Google Patents

Description

A. L. KNUDSEN.

LUBRICATOR.

APPLICATION FILED APR. 19. 1915.

Patented Sept. 7, 1915.

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. l AUGUST L. KNUDSEN, 015 BOSTON, MASSACHUSETTS.

LUBRIoAroR.

Specification of Letters Patent.

Patented Sept. "1, 1915.

Application filed April 19, 1915. Serial No. 22,284.

Lubricators, of which the following is a full, clear, and exact specification.

The object of this invention is theconstruction of a lubricator for elevator guides and like purposes which shall be simple and comparatively inexpensive to manufacture, durable in use, and which will not clog up nor drip.

Referring to the drawings forming part of this specification, Figure 1 is 'a side sectional elevation of a lubricator embodying my improvements. Fig. 2 is a perspective view of the movable member thereof. Fig. 3 is a perspective view of the oil-applying device.

The numeral 1 designates the oil reser voir which is attached to the elevator by a suitable bracket 2, and is closed by a cover 3 which is locked in place by means of a threaded stem 4 turning in a fixed nut 5. The latter is held by being cast integral with the reservoir and the partition 6 which with the reservoir wall composes an oil well 7. Gil is slowly conveyed from the reservoir to the well 7 by means of a wick 9, and from the well near its bottom extends a tubular stem or vent 10 for the passage of the oil from the well to the delivery member or sleeve 11. The latter is formed with a chamber 12 closed at its, outer end by a screw cap 13 and having at its inner end an interior shoulder or flange 14: slidably and rotatively fitting the tubular stem 10. A thimble 15 loosely fitting the interior of the chamber 12 and screwed upon the end of the stem 10 serves to keep the delivery member 11 from being lost, especially since a helical spring 16 located within the chamber between the screw cap 13 and the thimble 15 presses the delivery member away from the reservoir.

The lower portion of the delivery member 11 is provided with a threaded tubular stud l7 communicating with the chamber 12 through a vertical duct 19 at the front end of the chamber, and an inclined duct 20 from the inner end thereof just in front of the shoulder 14. Upon the stud 17 is screwed the oil-applier 21 one end of which is extended in front of the chamber 12.

This oil-applier has a small countersunk hole 22 through which the oil from ducts in communication therewith passes to the exterior surface 23, which is designed to be kept in contact with the outer edge of the elevator guide rail. The upper and lower terminals of the surface 23 are given bevels 24 to insure against catching upon the railjoints, and the lower side-edges of said surface are formed with lugs 25, slightly curved as shown in Fig. 3, for engagement with the sides of the rail-edge inorder to keep the oil-hole 22 central with respect to the rail-edge. i

The purpose of the upward extension of the oil-applier is to make the pressure against the surface 23 by the guide-rail, central with respect to the chamber 12 and thereby to prevent the cramping of the same on the stem 10 which would occur were the pressure wholly in line with the stud 17; for it should be remembered that, there is considerable play allowed between the elevator and its guide rails, and consequently between thestem 10 and its rail, both toward and from and laterally. The former is taken care of by the spring 16, while the lateral displacement is permitted by the swing of the delivery member 11, the lugs 25 being made vertically short and slightly rounded to permit such swing.

Oil from the reservoir is slowly but steadily transferred from the same to the well 7 by capillary attraction, and from the well the oil passes through the tubular stem 10 to the chamber 12, whence it drips down theduct 19 through the channel 18, tubular stud 17 and oil hole 22 to the face of the oilapplier and the rail in contact therewith. Without the countersunk mouth with which the hole 22 is formed, it would be much less easy to convey the oil to the contacting surfaces.

Theoretically, the shoulder 14: should be sufficient to prevent the escape of oil from behind the thimble 15, but practically I find that suflicient oil will pass between the surfaces of said thimble and chamber 12 to overflow said shoulder and drip from the end of the chamber; but, by providing the conduit or duct 20 in addition to said shoulder, any such escape and drip is absolutely impossible.

What I claim is:

1. An oiler for guide rails comprising a reservoir, a tubular vent out of direct communication with said reservoir, means for supplying allmited amount of oil fromthe reservoir to Sflld' vent, a-sleeve shdable and said conduit.

2. An oiler for guiderails comprising a reservoir, a tubular vent out of direct communication withrthe reservoir, means for supply'nga limited amount ofoil from the reservoir to the vent, a sleeve inclosing said vent having a shoulder at its inner end-slidably fitting the vent, the sleeve having a downwardly outwardly extended conduit, and a. delivery nozzle attached to the outer end-ofsaidconduit. r

3. Anoiler for guide rails comprising a tubular ventdisp'osed for receiving a limited supply of oil, a sleeve inclosing the vent having a' shoulderat itsinner end slidalply fitting the vent, the sleeve having its outer end 1 closed and being formed with a downwardly and outwardly extended conduit, a thimble attached to the outer'end ofthe vent slidably fitting the sleeve, a helical spring pressing between the thimble and the outer closed T end ofthe"sleeve, :anda delivery nozzle attached to the outerend of said conduit.

4. oiler for guide rails comprising a tubular vent' disposed for receiving a-limited v supplyoztoil, sleeve inclosing the vent having a shoulder at its inner end slidably fitting the vent, the sleeve having its outer end closedand being formed-with a downwardly andtoutwardly extended conduit, a thimble attached to the outer end of said vent and slidably fitting the sleeve, an oil delivery, device attached to the outer end of said conduit, the latter. being connected both with the outer section of the sleeve-chamber and also with the inner end-thereof nearsaid shoulder.

5. An oiler for guiderails comprising a tubular vent disposed for receiving a limited supply of oil, a sleeve shdableon said vent having a downwardly and outwardly ex- 16th day ofApril, 1915.

' AUGUST L. KNUDSEN;

Copies of vthis patentimayi be obtained forfive cents each, by addressing the commissionenofllatents. 4 1 i r 1 Washington, D. G.

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