US752164A - Dust-guard - Google Patents

Description

"1%. 752,164. PATENTE!) PEB. 16, 1904.

P. B. HARRISON.

D UST GUARD. APPLIOATIOK FILED .T UNB 25. 1903. no nonni..

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llllll 'IIL UNITED STATES Patented February 16, 1904.

ATENT Ormes.

A DUST-GUARD.

. SPECIFICATION forming part of Letters Patent No. 752,164, dated February 16, 1904. Application filed June 25, 1903. Serial No. 163,032. (No model.)

To @ZZ whom it may concern:

Be it known that I, FRANK BnNJAi/in HAR- RisoN, a citizen ofthe United States, residing at Toledo, in the county .of Lucas and State of Ohio, have invente'd'new and useful Improve-- ments lin Dust-Guards for Car Journal-Boxes, ci' which the following is a specicatin.

The object oi' my invention is the production of a dust-guard for journal-boxes which Shall eectively exclude dust, sand, andother foreign matter from the interior .of the box and likewise prevent the escape of oil therefrom, whichshall be comparatively simple in construction, cheap in first cost and durable, which will retain its proper position .within the chamber of the box when the brass wears away, which will not become deranged by any cause whatever in practical service, and which withal shall possess such desirable features and characteristics as will constituteit a superior means for performing the desired functions.

With the above ends in view my invention consists in certain novelties of construction and combinations and arrangements of parts, as hereinafter set forth and claimed.

The accompanying drawings illustrate an example and a modification of the physical embodiment of fmy invention constructed according to the best mode I have so far deviselad for the practical application of the princip e.

Figure 1 shows in dotted lines a journal-box and a journal and in full lines my dust-guard in operative position, the box and guardl being in section, so as to clearly disclose the relative positions of the several parts. Fig.

2 is a side view of the guard removed from the dust-guard chamber and enlarged. Fig. 3 is a view similar to Fig. 2, the halves of the frame being separated to show the tongue upon the upper half of the frame and the pins which retain the two halves in their proper positions. Fig.l 4 is a section of a pin and the ring, taken on line w of Fig. 3. Fig. 5 shows f the modification.

Referring to the several gures, the numeral 1 designates a journal-box, such as is in common use in connection with car-trucks; 2, the dust-guard chamber, open at the top, as usual;

3, an axle-journal, and 4 the dust-guard bearing of the axle.

The dust-guard is inserted at the top opening oi the chamber and is located when in use as shown in Fig. 1.

The numeral 5 designates the upper half of the frame of the guard; 6, a semicircular tongue; 7 7 holes in the guard at the terminations of the tongue on each side of the'upper part of the frame; 8, the lower half of the frame; 9, the semicircular tongue upon the lower half of the frame; 10, the pins rigidly secured to the lower half oi' the frame and the free ends located within the holes 7 7 oi' the upper half; 11, the metallic ring, U- shaped in cross-section, acting as a spring; 12 13, the lapped free ends of the ring, and 14 is a wedge inserted in the opening of the dust-guard chamber to exclude dust and other Jforeign matter.

It will be observed that the tongue upon the parts oi? the frame is of the greatest possible thickness and slightly less than the thickness oi the wood or other material constituting the frame, so as to be of great strength and to afford ample wearing material." The spring-ring is designed to frictionally engage the dust-guard bearing of the journal and to revolve with it, and to allow the ring to expand slightly the diameter of the same is less than the diametrical distance between the edges oi the tongue. When the ring is in position, the outer parallel surfaces of the ring are in the same planes as the surfaces of the two parts of the `frame, so that its outer surfaces will not wear excessively by contact with the in- 'ner surfaces of the dust-guard chamber.

The lapped free ends should in practice be so shaped that there will not be any open space between the ring and the journal for the passage oi dust. In some cases I may make the ring integral and the flanges lappingover the edges of the frame.

In Fig. 5 is illustrated a modification. Upon the tongues 9 and 6 of the two sections of the frame is placed a U-shaped metallic ring 15, which irictionally engages the tongue and which is not designed to revolve.v The ring 11 loosely its the ring 15 and turns upon it. This arrangement provides a metallic bearing-surface for ring 11, which will be more durable than the tongue which directly receives the ring 11 in the main example.

From the foregoing description, taken in connection with the drawings, it becomes obvious that Ihave produced a dust-guard which fulfils all the conditions set forth as the purpose of my invention.

' While I have specifically illustrated only one example and a modification of the physical embodiment of my invention, I do not thereby intend to limit -the scope thereof to such example and modification, inasmuch as in practice colorable changes and modications may be introducedl without constituting substantial departures.

What I claim as new, by Letters Patent, is-

1. The combination with a journal and a journal-box having a dust-guard chamber, of a frame with a circular opening therein, and a ring U-shaped in cross-section with its edges loosely lapping over the circular edge of the frame and frictionally engaging the dustguard bearing-of the axle so as to revolve with the journal.

2. The combination with a journal, and a journal-box having a dust-guard chamber, of a frame with acircular opening therein, and a spring-ring U-shaped in cross-section with its ends breaking joints when in position within the circular opening'oi the frame and its edges lapping over the circular edge of the frame and loosely engaging the same.

3. rI`he combination with a journal and journal-box having a dust-guard chamber, of a frame made in sections with a circular opening, and a ring U-shaped in cross-section with its edges lapping over the edges of the sections oi the frame and loosely engaging the same so that the ring may journa L The combination with a journal and a journal-box having a dust-guard chamber, of a frame provided with a circular opening with a tongue, and a ring U-shaped in cross-section and loosely engaging the tongue and frictionally engaging the dust-guard bearing of the axle so as to revolve with the journal.

5. rlhe combination with a journal and a journal-box having a dust-guard chamber, of a frame having a circular opening with a tongue and a spring-ring U-Shaped in crosssection with free ends which overlap, said ring revolve with the and desire to secure or' the axle and loosely engaging the tongue of the frame.

6. A sectional dust-guard frame having a substantially circular opening and a ring U- shaped in cross-section loosely overlapping the edges of the opening and xed upon the dustguard bearing of the axle so as to revolve with the journal.

7. A dust-guard frame having a substantially circular opening, a ring U-shaped in cross-section surrounding the opening, and a second ring U-shaped in cross-section overlapping the first-mentioned ring U-shaped in cross-section and adapted to revolve in frictional Contact therewith.

two witnesses.

FRANK BENJAMIN HARRISON.

presence of Witnesses:

LnoLA G. VVENDELL, W. S. S'rnrnnnson.

frictionally engaging the dust-guard bearing- Intestimony whereof I aiix my signature in-

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