US1519758A

US1519758A - Leaf-spring lubricator

Info

Publication number: US1519758A
Application number: US510808A
Authority: US
Inventors: John P Cosgrove
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-10-27
Filing date: 1921-10-27
Publication date: 1924-12-16
Anticipated expiration: 1941-12-16

Description

Dec. 1924- 1,519,758

J. P. COSGROVE LEAF SPRING LUBRICATOR original; Filed Qct. 27, 1921 2 Sheets-Sheet 1 4 p-E55: iii-tiff??? 7 20 f/JQNVENTEJH ATTDENEYE Dec. 16, 1 924. 1,519,758

J. P. COSGROVE LEAF SPRING LUBRICATOR Original Filed 001;. 2'7, 1921 2 Sheets-Sheet 2 FIE-.15. FIElE.

AT T EIE'NEYB' Patented Dec. 16, 1924.

UNITED STATES JOHN P. COSGBOVE, OF BROCKTON, MASSACHUSETTS.

nmr-srnmc LUBRIGATOR.

Application filed October 27, 1921, Serial No. 510,808. Renewed April 25, 1924.

To all whom it may concern:

Be it known that I, JOHN P. Cosonovn, a citizen of the United States, residing at Brockton, in the county of Plymouth and State of Massachusetts, have invented new and useful Improvements in Leaf-Spring Lubricators, of which the following is a specification.

This invention relates to a lubricator adapted to conduct oil to the edge portions of the leaf spring of an automobile, or other vehicle, and deliver the oil to the crevices between the leaves of the spring in such manner that the oil will enter said crevices and lubricate the contacting surfaces of the leaves.

The invention is embodied in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings forming a art of this specification,

igure 1 is an edge view, showing a portion of a leaf spring and a lubricator embodying my invention, applied thereto.

Figure 2 is a top plan view.

Figure 3 is a bottom plan view.

Figure 4 is a perspective view, showing a portion of the spring without the lubricator.

Figure 5.is a view similar to a portion of Figure 4, showing the pad protector hereinafter described.

Figure 6 is a section on line 6-6 of Figure 5.

Figure 7 is a ure 1.

Figure 8 is a sectional view of the lubricator, on the plane indicated by line 7-7 of Figure 1, the lubricator being spread out.

Figures 8 to 15, inclusive, show certain modifications and separate views of the wrapper and of the pad portion thereof.

The same reference characters indicate the same parts in all of the figures.

My improved lubricator comprises an envelope or wrapper including a pad 12 of absorbent material such as felt, an envelope 14 for confining the pad in contact with the leaf spring 13, and means for conducting 011 section online 7-7 of Figto the pad. As shown by Figure 7, portions of the pad bear on opposite edges of the spring so that .oil seeping through the pad enters the crevices between the leaves of the spring and lubricates the opposed contacting surfaces of said leaves.

The envelope 14 is composed of a sheet of able material.

Oil is supplied to the pad by an oil cup 17, secured to one end portion of the envelope, and preferably to the corresponding portion of the pad, and a wick 20, which includes end portions arranged to receive oil from the cup. Portions of the Wick extend lengthwise of the pad, as indicated by dotted lines in Figures 1 and 2, and contact with the pad, as shown by Figure 7, the arrangement being such that oil conducted by the wick seeps through portions of the pad hearing on the edges of the spring, and is conducted to the crevices of the spring.

The pad is preferably formed from a single blank of sheet felting, having a longi: tudinal central portion of single thickness located over the upper side of the spring, the blank being longitudinally folded and stitched to form plaits 12 extending lengthwise of the pad, and secured by stitches 21. The longitudinal edges of the pad are preferably attached to the envelope by means of stitches 22. .The plaits 12 form thickened edge portions bearing against opposite edges of the spring, and longitudinalwick tubes, through which elongated portions of the wick 20 extend, said longitudinal portions being connected by a neck portion 20* of the wick at one end of the pad, as shown by Figures 1 and 2. As indicated by Figures 1 and 7, the wick tubes containing the longitudinally extending portions, of the wick are located in the edge portions of the pad which are adjacent to the upper side of the spring, so that the oil which enters the pad creeps downwardly across the edge portionsof the spring, and thus obtains access to all of the crevices.

The pad is preferably formed to embrace a relatively thin end portion of the spring, having a minimum number of leaves, and to extend therefrom and embrace a portion of the spring having the maximum number of leaves, and therefore of greater thickness. The envelope is correspondingly formed, the pad and envelope being wider at one end than at the other, to enable one end to embrace a thin portion, and the other end a thick portion of the spring.

The pad and envelope when used on a spring having the usual leaf clamp, composed of the strip 24 and bolt 25, are so fashioned that they bridge said clamp, and are locally bulged outward thereby. The ends of the clamp strip 24, and the head and nut of the bolt 25, present projections and angles which are liable to abrade and cut the pad, particularly when the latter is made of felt. To prevent injury to the pad by the clamp, I provide a pad protector 26, formed to cover the ends of the strip 24., the bolt and its head and nut, as indicated by Figures 5 and 6. Said protector may be pressed from sheet metal, or other suit-able material, and presents smooth.non-abrasive external surfaces which are free from liability to abrade and cut the portion of the pad which bridges the clam The protector is formed to be dropped oosely on the spring in position to cover the clamp, and requires no fastening, other than that provided by the Wrapper formed by the pad and envelope. The protector ensures reasonable longevity of the pad. When the pad is applied to a spring the only wearing surfaces or projections which it encounters are those presented by the clamp. When the protector is employed, these wearing surfaces or projections are rendered harmless.

The oil cup 17 is preferably provided with a nipple 28, projecting from its bottom, and provided with an oil duct 29, having branches 29 opening on the periphery of the nipple. The preferred connection between the cup and the envelope and pad, is embodied in clamping means associated with the nip le as follows: The nipple enters alined ori ces formed for its reception in the envelope and the pad. The inner end of the nipple is recessed to form an annular edge, adapted to be upset like the end of a tubular rivet, to form a setting flange 30. Said flange bears on a washer 31, surrounding the nipple 28, and bearing on the inner side of the pad. The bottom of the cup 17 bears on the outer side of the envelope 14. A washer 32 surroundin the nipple 28, bears on the inner side of the envelope. The portions of the pad and envelope surrounding the nipple, and the

washers

31 and 32, are clamped together by the nipple flange, so that the cup is securely attached to the envelope and pad. The washers may be formed to contact with each other, the washer 31 being here shown as provided with a hub 36, hearing on the washer 32, and having openings or grooves the envelope, and adapte 37 which loosely receive the end portions of the wick so that the capillarity of the wick is not affected by clamping pressure. The duct branches 29 are in alinement with the grooves 37 so that the wick-ends loosely inserted in said grooves are adapted to receive oil fiowing'from the cup. When the wrapper formed by the envelope and pad are applied to the spring, the nip le flange may bear on the spring, as shown y Figure 7.

Figures 9, 10, 11 and 12 show a' different form of spring, and a lubricator which includes an oil cup 17 having a cover 19, and

secured by rivets 18 to the envelope 14, the cup having orifices in its bottom through which the end portions of the wick extend.

The wrapper, including the pad and the envelope, is shown se arately by Figures 13 and 1 1, and the pad is shown separately by Figure 15.

The plaited edge portions of the pad are so thickened that they are adapted to hold in reserve an ample supply of oil, and deliver the same to the crevices between the spring leaves. The wick tubes formed by the plaits securely confine elongated portions of the wicking inthe desired position, and prevent accidental displacement of said elongated portions.

I claim:

l. A leaf-spring lubricator comprising, in

longitudinal absorbent wick tubes, at flexible envelope of greater area than the pad, said envelope being superimposed on the pad, and adapted to be wrapped around and secured to the spring, and confine the said thickened portions against the edges of the spring, an oil cup seated on .the outer side of the envelope, near one end and between the longitudinal edges thereof, and provided with a nipple extending throu h and secured to to discharge oil between the envelope and the central portion of the pad, and wicking arranged to receive oil from said nipple, and extending through said wick tubes to supply oil to said thickened portions, the wicking being confined in operative position by said tubes.

2. A leaf-spring lubricator comprising, in combination, an elongated ad of absorbent material, having a longitudinal central portion, formed to be located over the up er side of a spring, and two longitudinal e ge portions formed to bear on opposite edge portions of the spring, a flexible envelope of greater area than thegpad, said envelope being superimposed on the pad,and'adapted to be wrapped around and secured to the spring, and confine. the said edge portions renews against the edges of the spring, an oil cup seated on the outer side ofthe envelope near one end and between the longitudinal edges thereof, and provided with a nipple extending through the envelope and the central portion of the pad, said nipple having outlet means arranged to discharge oil between the envelope and the pad, clamping means associated with .the nipple, and engaged with portions of the envelope and pad, said clamping means being provided With Wickreceiving means, and Wicking loosely inserted in said. receiving means, and secured to the edge portions of the pad to conduct oil thereto.

3. A. leaf-spring lubricator comprising, in combination, an elongated pad of absorbent material, having a longitudinal central portion, formed to be located over the upper side of a spring, and two longitudinal edge portions formed to bear on opposite edge portions of the spring, a flexible envelope of greater area than the pad, said envelope being superimposed on the pad, and adapted to be wrapped around and secured to the spring, and confine the said edge portions against the edges of the spring, an oil cup seated on the outer side of the envelope near one end and between the longitudinal edges thereof, and provided with a nipple extending through the envelope and the central portion of the pad, said nipple having oppositely extending lateral outlets arranged to discharge oil between the envelope and the pad, clamping means associated with the nipple, and engaged with portions of the envelope and the pad, said clamping means being provided with wick-receiving openings communicating with said outlets, and wiclzing loosely inserted in said openings and secured to the edge portions of the pad to conduct oil thereto.

4;. In a leaf-spring lubricator, an elongated pad of absorbent material, having a longitudinal central portion, formed to be located over the upper side of a spring, and two longitudinal plaited thickened edge portions, formed to bear on op osite edges of the spring, and forming ongitudinal absorbent wick tubes, extending from end to end of said edge portions.

5. In combination, a leaf-spring h'aving a leaf-confining clamp, a lubricator comprising an elongated pad of absorbent material, having a central portion located over the upper side of the spring, 'and extending across a portion of said clamp, and two longitudinal edge portions bearing on opposite edge portions of the spring, and extending across other portions of the clamp, envelope or": greater area than the pad, said envelope confining the pad upon the spring, means for conducting oil to the pad, and a protector covering the clamp and having non-abrasive external surfaces contacting with the portions of the pad which extend across the clamp, said protector being confined in place by the p'ad and the envelope.

6. A leaf-spring wrapper comprising a pad or": absorbent material, formed to be applied to a spring, and provided with longitudinal plaits, wiclring contained in said plaits and projecting therefrom at one end of the pad, and an envelope covering one side of the pad and having means whereby it may be closed and confined on a spring.

In testimony whereof I have atfiaed my signature.

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