US1913104A - Combined dust guard and oil seal - Google Patents

Description

June 6, 1933.

J. M. BRYAN ET AL COMBINED DUST GUARD AND OIL SEAL Original Filed Aug. 5, 1931 INVENTORS c/asr/w% 52/4,

A T TORNE Y Patented June 6, 1933 UNITED STATES PATENT OFFICE JOSEPH M. BRYAN AND BRINAY SMAR'IT, OI INDIANAPOLIS, INDIANA; SAID SMART! r 1 ASSIGNOR TO SAID BRYAN i i COMBINED nns'r GUARD AND OIL SEAL.

Original application filed August 5, 1931, Serial No. 555,314. Divided. an this application, filed my 30,

1932. Serial no. 626,850.

The present invention relates to journalbearings in general and particularly to a combined dust guard and oil sealin connection therewith.

The subject matter of thisapplication 1s a division of our pending application for self lubricating bearings filedAugust5, 1931 and bearingSerial No. 555,314 now Patent No. 1,885,586, patented Nov. 1, 1932.

One of the principal objects of our present invention resides in an extremely s mple and highly efiective dust guard which is associated withoil'wiping means for not only preventing dust or gritty matter from entering the journal-box to'within the bearing portions but atthe same time deflect ng the surplus oilfrom the rotat ng bearing and diverting it backinto the Qll supply or reservoir.

A further object of our invention resides inthe provision of a dust guard wh chmay be readily applied to theexisting ournalbox of the class described.

It is to be understood that the invention, however, is not intended to be restrlcted to the particular construction, nor to the particular applications of such construct ons, herein shownand described, nor to the various details thereof, as the same may be modified in various particulars or be applied in many various relations without departing from the spirit and scope of the invention, the practical embodiment herein illustrated and described being merely an attempt to show one of the various possible forms in which the invention might be embodied. p 1 For the attainment of the above and other objects as may hereinafter appear or be pointed out, we have illustrated an embod ment of our invention in the drawing, wherein:

Figure 1 is a longitudinal sectionalview taken through a portion of a journal-bearing illustrating our attachment in its operative position; v. 1

Figure 2 is a view 111 elevation of the dust proof guard, partially broken away,

the axle and the casing of the journal-bearing being omitted for the sake of clearness;

Figure 3 IS a top plan view thereof;

Figure-4 is a fragmentary view, slightly f enlarged, of Figure 2, looking in the direction of the arrow indicated as 4; and

Figure 5 1s a view 111 perspective of one of the detalls associated with our invention. 1

;' Our invention, in the form or embodimentshown in the drawing and briefly described, comprises a casing or housing of a j ournal-bearing 10, and a dust-proof guard shown generally at 11, associated therewith.

Referring particularlyto Figures from l to 5, the dust-proof guard ll consistsof upper and lower- plate members 13 and 14, which are adapted to be yieldingly supported in their operative position with re- I spect to the casing ofthe journal-bearing 10, and held against accidental displacement therein. The means for preventing the dis placement of this guard 11 may be described as a pair of flanges 15 and 16, which are integrally formed with one endofthe casing of the journal bearing 10, providing there between a recess 17, within which the guard is supported.

A pair of pins 18 may be threaded into the channel or groove 17, and is adapted to align with a pair of vertically extending openings 19, formed through the lower edge of the bottom section 14 of the guard 11. A coil spring 20 is mounted upon each pin 18, and is adapted to extend within the opening 19, for-yieldingly supporting the guard 11. The upper end of the guard is likewise provided with a pair of openings 21, for the purpose of receiving the springs 22, which are in turn properly supported by means of the pins or rivets 23, which are supported by the cover plate 24.

Each of the side edges of both of thesections 13 and 141, is provided with a channel 25, extending its entire length, for the purpose of supporting the felt strip or packing 26, which is adapted to be engaged by the walls of the lateral portions of groove 17 thereby preventing entrance of dust or other foreign matter between these contacting surfaces. Each of the sections 13 and 14, in

their respective lower central portions, is

provided with a semicircular opening 27, slightly larger in diameter than the axle 0r shaft 28. An annular groove or recess 29 is formed adjacent each opening 27, for the purpose of receiving the felt or packing 30, which is, of course, adapted to contact with a rotating shaft or axle 28. It will now be appreciated that guard 11, although not coming in direct contact with the axle 28, is yieldingly supported with respect thereto, by means of the flanges 15 and 16, and the respective coil springs 20 and 22, there being suflicient clearance or play between the dust guard and the groove 17 to permit any sidewise movement, due to wear of the bearingblock 32, with respect to'this axle or shaft 28.

We will now describe the novel means associated with our invention for deflecting the course of oil, which has been carried around the axle 28, to a point away from the packing or felt ring 30, thereby preventing saturation and the collection vof dust thereon. The upper edge of the opening 27 in section 13 is cut away, shown at 33, for the -purpose of receiving the deflectors or blades 34, which are, in turn, supported from their vertically extending shafts 35, mounted for oscillation within the openings 36. Portions of the openings 36 are counter-bored, as shown at 37, for the purpose of receiving the expansion coil springs 38, which are adapted to be supported between the upper edge of the counter-bored openings and the upper face of each of the blades or deflectors 34, for the purpose which will be readily obvious.

The upper edge of the section 13 is provided with a pair of substantially similarly formed depressions 40, for the purpose of retaining the headed members 41 in various positions. These headed members 41 are each rigidly secured to the upper end of their respective shafts 35, so that they may be turned into or out of the operative position of the deflectors 34 with respect to the axle 28.

The lower edge of each of the deflectors 34 is formed arcuate and of the same contour as the axle 28 upon which the deflectors are adapted to rest when in their operative position.

The headed member 41 will, of course, rest upon the ledge or surface 45, formed between both of the depressions 40 and 42, when it is desired to hold the deflectors 30 and 34 in their elevated or out of their position of engagement with the axle 28. In Figure 2 of the accompanymg drawing, we clearly illustrate one of these deflectors as being raised out of position whereas the other is in its lowermost position.

It will now be readily understood that our novel oil deflecting means associated with the dust-guard will. effectually exclude all particles of dust and gritty matter which is so harmful to bearings, and at the same time prevent the accumulation of oil or grease at the upper end of the axle.

WVhat we claim is 1. In combination with a car journal box, a pair of adjacently abutting slates having semi-circular openings in the a utting edges for receiving a car axle, one of said plates having a recess adjacent the semi-circular opening therein, a plurality of recesses formed in the external edge of said plate in alignment with said first mentioned recess, a plurality of steps in said external recess, bores connecting the recesses adjacent the opening and the corresponding external recess, shafts reciprocable in said bores, oil deflecting blades connected to the ends of the shafts adjacent the opening, said blades inclined relatively to the axis of the car axle in opposite directions, and having a contour 2. In combination with a car journal box,

a pair of plates having adjacently abutting edges for receiving a car axle, one of said plates having a recess adjacent the semicircular opening therein, a plurality of recesses formed in theexternal edge of said plate in alignment with said first mentioned recess, a plurality of steps in said external recesses, bores connecting the recesses adjacent the opening and the corresponding external recesses, shafts pivotal and reciprocable in said bores, oil deflecting blades connected to the ends of the shafts adjacent the opening, said blades adapted to be selectively inclined relatively to the axis of the car axle in opposite directions, and having a contour conforming to the periphery of the axle, said bores being counterbored from the recesses ad acent the opening and springs seated in said counterbores forcing ii said blades against the axle, and headed members at the ends of the shafts opposite the blades designed to cooperate with the steps in the external recesses by which the blades may be selectively raised from 00- operation with the car axle, said members being supported by said steps,"

3. In combination with a car journal box, a dust guard for car journal bearings secured therein comprising a pair of plates having semi-circular openings formed in their abutting edges, said plates adapted to embrace a car axle within said openings, means formed in the edges of said openings for obstructing the passage of foreign matter to the journal bearing, a plurality of oppositely disposed oil deflecting blades supported by one of said plates and means for selectively bringing said blades into contact with the car axle to deflect the surplus oil from said dust guard and axle in accordance with the direction of rotation of the axle.

In witness whereof we have hereunto signed our names. I JOSEPH M. BRYAN. BRINAY SMARTT.

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