US1838661A

US1838661A - Dust guard

Info

Publication number: US1838661A
Application number: US422370A
Authority: US
Inventors: William F Cremean
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-01-21
Filing date: 1930-01-21
Publication date: 1931-12-29
Anticipated expiration: 1948-12-29

Description

v29, 1931- w. F.. CRI-:MEAN

DUST GUARD Filed Jan. 21 1930 1306732217.' Czemean,

,zzz BH Patented Dec.` 29, 1931 v nUsfr GUABQD Application :lled'J'anuary 21, 1930. Serial No.`\422;370. i

My invention relates to Vnew and luseful improvements in dust guardsl for the ournal boxes of railway cars andhasforan object to providel a dust guard thatwill .itvclosely around the dust guard bearing of the axle to exclude the dust and of oil4 and waste. p

The present application is a companion ease to the one filed by me on March 11, 1929 and bearing Serial Number 346,165. 'y'

One ofthe objects ofthe present inventionis to'provide a dust guardthat will Vbe extremely light in weight and eiiicient .in service. .4 Y',

VStill another object of the invention isto provide `a dust guard comprising av metal holder or frame, in which there is placed a ring, which, in turn, is formed 4with a pliable material, such Vas lamp wicking or cotton k webbing,securely held in a metal backing.

prevent the escape,VV

Still another object oftheinvention is'to v providea dust guard formed of relativelyV thin sheet metal, nrwhich there is a wie crimped in a metalbacking, whichfwick with'A "its metal backing Vmay easi-1y"be removed from the plate and a new one inserted when necessary. A 1 y Y Still anotherV object ofthe invention isto which there fits the removable metalLbacked wick, the said metal-backed wick being broken at its upper portion and theends abutting, which ends are locked in place by a metal block of special design and conigu f ration. Y. Y

In the companion case, thexmetal-backed wick had the ends iittingin the ends ofa block, which block, in turn, was iitted up withinthe metal holder, whereas in the presentinstance, 'the ends of the metal-'backed wick abut or nearlyV abut, and are tightly'` locked in yplace by a specialv formA of metal 4 block, hereinafter to be more fully described.V

provide a dust guard comprising a plate inl Referring now tol the drawings showing '.a preferred embodiment, 'y

Fig. 1 is a plan view of my'improved dust guard. showing `the wick ring inposition;

Fig. 2 I is a sectional view .taken on the line and looking in the direction ofthe arrows, but with the wick removed; .p A Fig. 3 is a sectional view taken on the line 8-7-3 of Fig. lon an enlarged scale;

` IFigflisla' sectional 4 4 of rig.. i;

Figf is a sectional view taken on the line YFig.; 6 is a sectional view i .taken on the -line plate 1 having the outstanding flanges?. alono' the sides. VThe bottom of the plate is roundedj as at 3, while the top l is flat acrossV its entire width. The top of the plate is provided with the offset flange `5, while its edge 6 isA slightly curled, .asymayf be seen in Figs. 1

and 2. f

Itwillalso be seen that there' is the'small flange at the bottom with the slightly curled edge 8,V thusthe edge .Sand the top 6 of the `flange 5 being in the same vertical plane, so that when the'` dust guard is placed` in the dust boxy (notY shown), it will bear against the opposite walls of the same from the main plate Yl.

,l ,As far `fasrthe "speciiication `has proceeded, it will be V,understood that it is: the same as'V the companion case', with the exception that the flange `7` in the present instance extends rearwardly substantially inf one plane and the flange 8 is slightlyA less rounded'.V The central portion of the plate 1 is out out, as at 9, the opening being slightly larger than the `circumference shown) of the carp: axle "(not view taken on the line l TES PATlezN'ri OFFICE arrangements and c'ornbinationof parts, as il `will be hereinafter moreafully described and pointed out1 inthe claims.

About the wall of the circular opening 9, there will be seen the depressed rib 10, which extends entirely around the same and this is depressed in the opposite direction from that shown in the companion case.

There is a slight circular space 13 which, in reality, forms a rim between the ribl() and the edge of the peripheral wall of the opening 9, which is partly cut out to form lips in staggered relation, as may be seen in Fig. l and the other several views.

Referring for the moment to Fig. 5 whichis a section on the line 5 5 of Fig. 1, it will be seen that the peripheral edge 14 at this point is n the normal plane of the plate. However, the metal is then split or cut, Vas at 15 and 16, to form'the lug or lip 17,`as may be seen in Fig. 6, thatis, this metal is lpressed inwardly, as viewed from Fig. 1 or, in other words, is offset from the part 14' to form .a retaining lip.

There are a number of these lips formed in the same way, such as 18, 19, 20 and 21, the metal left in the original plane also forming retaining lips, alternately thereof.

These lips are vsimilar to the ones shown in the companion case, but in the present instance they are pressed inwardly, as viewed from Fig. 1 rather than outwardly .as they are in the companion case.

Now at the top of the circular opening, the metal is cut and offset to form two lips 22and 23, while the central section 24 between these two lips is offset slightly in the oppositedi-V rection, as may be seen at 25, `(See Fig. 4) the purpose of these three lips being to re? ceive and hold a small locking andbearing block 26 which is to be made of a relatively soft metal, such as lead or babbitt: or any other similar metal, and is ofspecial design and configuration to tightly lock vwithin. the offset lips or lugs just mentioned'a split metal ring 28 in which there is crimped the wick 29, which wick is adapted to tightly lit or hug the car axle (not shown).

' Now rather than having the ends of the crimped metal rings set within the block, as shown in the companion case, in the present instance I have the two ends of the ring abut# ting or substantially abutting directly in the center of the plate and, therefore, beneath the pressed-back lug or lip 24. The remainder of the crimped metal ring, of course, fits under the previously mentioned

lips

17, 18,

19, etc. and between the normal portions of therim that are not pressed back, so that the.

ring will be tightlyy held in position after once being inserted.

Referring more particularly to the gist of the invention and to the manner of holding these abutting ends of the crimped metal ring in place, reference is' made to the bearing block 26. As maybe seen in Fig. 8, this block` 26 comprises the body portion 30 with the up.- standing lug 31 and the reduced end portions held in the plate and, in turn, will snugly hold the ends of the metal-backed wick in position.

It will also be seen that this block 26 has the downwardly projecting portion 3G, which is arcuate, so that this portion may bear directly on the axle (not shown) and hel 3 hold the plate in position.

n the rear face of the block, there is shown (Figs. 4 and 8) an overhanging lip 37, so that the ends of the metal wick when in position'will be held against any rspringing or upward movement, as this lip 37 overhangs the two edges, as just explained. The overhanging lip is also arcuate in plan.

In other words, the rear face of the block projects outwardly and the projection following an arc similar to the arc of the metalbacked ring.

Now to put in a new ring, it is a very simple matter to knock the block downwardly out of position, slip in a new ring and wedge a new blockup in place.

From the foregoing, it will be seen that I have produced a metal dust guard that is extremely cheap to manufacture wherein a new wick may be quickly locked in position.

The ends of the metal-backed ring will be brought right together at the top of the plate, after which the soft metal block will be jammedl up behind the two lips on the one side and in front of the lug on the rear side, while the little projecting ends will extend slightly beyond the two adjacent portions of the rim, as illustrated, to thus tightly lock the metal-backed wick in place.

Having thus described my invention, what I claim asnew and desire to secure by Letters Patent is Y 1. A dust guard comprising a metal plate having a large central opening, the walls about the opening cut to form staggered lips, a removable metal-'bound wick fitted within said staggered lips, additional lips at the top of the opening, the ends of the metal-bound wick directly opposite one of the additional lips, a'metal block .jammed over the said ends and between the said additional lips at the top ofthe opening to thereby lock the metalbound wick in position.

, 1 2. A dust guard comprising a metal sheet,

said metal sheet being` flat across the top and rounded at its bottom, said plate provided with a large-central opening, the walls about said opening being pressed to form retaining lips and adapted to hold a composite split ring axle bearing member, two additional lips at the top of the opening on the one side of the plate and spaced apart and a further lip on the other side of the plate opposite the space between the two aforementioned lips, the ends of the split ring lying in front of the last-mentioned'lip, a block with an upstanding lug and reduced end portions jammed up between the three said lips and interlocking between said lips to thereby jam the ends of the ring tightly between'the said lips and blocks.

3. A dust guard formed of a metal sheet together with a fixedly held split metal ring, said metal Vring having an axle-engaging means associated therewith, integral means about the opening for holding the ring in position, a metal plug' having an upstanding lug and end portions itting up within the means for holding the ring in position, said plug having an overlying ledge whereby the ends of said ring are tightly clamped in position and also prevented by said ledge from springing upwardly. v

4. A dust guard comprising a metal plate provided with a large central opening, staggered lips around the edge of the opening, a metal-bound wick in the form of a split rin@ held within said lips, additional lips at the top of the opening, one on one side of the plate and two on the opposite side of the plate to thereby receive the ends 'of the ring, a metal block with an upstanding lug and 'outwardly projecting reduced ends also projecting betweenfsaid last-mentioned lips to tightly hold the ends of the ring between said lips.

5. A dust guard comprising a metal plate with a large central opening, a wick in the form of asplit ring with a metal-bound back fitted about the walls ofthe opening, lips disposed on the opposite side of the plate at the top of the opening for contacting with the ends of the wick, a metal plug having an upwardly 'extending lug, out wardly extending end portions and an arcuate overlying ledge jammed between said lips and over the ends of the ring to tightly hold the same in position and to provide against any upward movement of its ends.

6. A dust guard comprising a metalplate with a central opening and the walls about theopenng cut to form lips, a metal-bound wick in the form of a split ring fitted within the lips and having Vtheir ends abutting, a lip behind the abuttingedges and lips just beyond the abutting edges formed in the plate, a metal block litted within said lips and overlapping the ends, and the said metal block. having an overlying arcuate ledge to thereby hold the'ends of the wick against movement.

7. A metal dust guard having a large cen-v tral opening and means about the opening for holding an axle-bearing member, said tion adaptedtorest on an axle and an overlying edge formed on `said wedge to thereby prevent the ends of the split ring from springing upwardly.V

8. A plug for holding the ends of a .split ring within a dust guard, said plug comprising a body portion and an upstanding lug, the opposite sides of the body portion having reduced ends, a depending portion adapted Vto rest on a car axle and one face of the plate being provided with an overhanging ledge and extending arcuately across the body portion.

9. A block for holding theends of a split ring tightly within a dust guard, said block Acomprising a body portion with an upwardly extending central lug, the sides of the body portion being slightly reduced, and an arcuate overhanging ledge formed on one face of the body portion.

In testimony whereof I aliix my signature.

WILLIAM F. CREMEAN.-