US2821752A - Neb - Google Patents

Description

Feb. 4, 1958 R. K. WHITEHEAD NEB Filed June 2, 1953 L 1 INVENTOR V kic'hzfidffimzz'ieiiead ATTORNEYS United States merit o z,szr;1sz

NEB niciiar'a rr'iwniignaaag ang na, ea; Application was 2, 1953,5551 No. 359,053 4'Claim's. or: 19 134 My invention relates' to textile machinery-and, specifically. to nebs for guiding the -journals of-- topl lrolls. Nebs heretofore employed have-been,., for themostpart, formed of cast iron but such-nebshave. not: been entirely satisfactory. They are oftennoisy, require more orless frequent lubrication, present iron to iron bearingsurfaces,

with" consequent undesirable wear, and have. other disadvantages.

'It'is an object'of my invention-to provide an improved folrriofneb.

It is another object to provide-a-neb -which' carries its supply of lubricant and which will not ooze or leak oil.

Another object is to provide a neb which may be very easily repaired or. replaced, and which is relatively inexpensive.

;'-It is :another object to provide-a neb havin'g asbody which inrgeneral is not subjected to 'wear,and renewable wear surface means which may; be ver-y readily replaced when necessary. t t

Oth'er objects and various features of novelty and invention will be hereinafter pointed out or will become apparent to those skilled in the art.

'In the drawings which" show, 'for" illustrative purposes only, a preferred form of the invention- Fig. 1 is a top plan view of a roll stand employing nebs illustrative of the invention;

Fig. 2 is a view in side elevation of parts shown in Fig. 1, the roll axes being shown in a horizontal plane rather than in the inclined plane as usually arranged.

Fig. 3 is an enlarged, isometric view of a double neb, shown in Figs. 1 and 2;

Fig. 4 is an exploded view of the neb shown in Fig. 3;

Fig. 5 is a sectional view, taken substantially in the plane of the line 55 of Fig. 1;

Fig. 6 is a fragmentary, isometric view illustrating a sheet metal housing forming part of the improved single neb of Fig. 1;

Fig. 7 is an isometric view of a neb core or wear member to fit the housing of Fig. 6.

In said drawings, the drafting rolls 55 are mounted for rotation and are driven in any usual or desired manner. The top rolls 6-6, as is usual, rest on the driven rolls 55, and the journals 7-7 of the top rolls are journaled in or have bearing against the bearing surfaces of the nebs to be described.

In the specific form illustrated, I employ a neb core 8, which in the form illustrated in Fig. 4 has double wear surfaces for guiding the journals of a double set of top rolls. The core 8 is formed of suitable material, and, in the preferred form, I employ wood, such as rock maple, with the grain running generally horizontally, as shown in Fig. 4, so that the notched-out sections 9 form opposed bearing surfaces 10, presenting end-grain wood serving as direct bearing surfaces for the top roll journals 7. It should be here stated that, when the cores 8 are formed of wood, such as rock maple, they are preferably impregnated with oil so that the oil tends to very slowly come out Of the end grain bearing surfaces and adequately lubricate t-the= iiournals -1, when they rotate between those 1 two-end grain bearing; surfaces 10-.-10l,. vIn th form shown the axial end of the journalfl engagesside. grain wood, butfithenlubrication is sufficient sinceathere is=practically nozend t-hrust.in,the,top,rolls.

Innorder to strengthen thecore.8 workmanlike and longdasting .neb,

sosasto reinforce. ethe, .sarne and gi ve adequate support forzthe intended purposes-In .order .to;provide a. flush, generally continuous, and. easily cleaned surface, I prefer to recess the core, .asindicated. at 13,-;so that the housing member is "let in the core, so that the general appearance is ,as shown in Fig. 3.. Thus, ,thehousing, parts 11 give adequate supportto the parts of the core having the end grain bearing surfaces, as heretofore described, and at the same time, .the housingbeinglet in or recessed .in the core, provides asmooth, .flush surface,fwhich' is so desirable in this, art. in thati;th'e collecting of .lintis lessened. r H

Nebs are-usual-lymounted upon cap bar fingers, and in the preferred ,form zI'zrnayi rely. partly uponthe cap-bar. finger to hold the nonameftallic core 8 in the. housing. In] the form illustrated,, the, core is-- provided withla through bore 14, and, each.,l 'eg,.11 of the-housing is provided with an aperture-15, which registers with the bore 14; Thus, the capebarfinger16may. passthrough. the apertures 15 and the bore 14, and ,when so housed in the bores or thethrough bore, the core' 8 is very securely held against accidental separation from the housing. In order to hold the assembled neb on the cap-bar finger 16, I provide a set-screw 17, which in the form shown, is threaded into a tapped hole in the housing. As illustrated. a hole is punched in the housing, and the burr 18 extends inwardly and is threaded. The core 8 is provided with a second bore or aperture 19, which is aligned with the burr 18 and is large enough to freely receive the burr 18 without undue contact therewith. Thus, the set-screw and its tapped bore and the bore 19 extend at right angles to the cap-bar finger 16 and intersect the main bore through the neb. When the set-screw 17 is turned up onto the finger 16, the entire neb is securely held in whatever adjusted position on the finger may be desired.

The form described and illustrated in Figs. 3, 4, and 5 is that double neb form shown at the top of Fig. 1. The single neb shown at the bottom of Fig. 1 and illustrated more particularly in Figs. 6 and 7 may be and preferably is substantially the same as that heretofore described, except that only one bearing notch, instead of two, is necessary, and corresponding reference characters each marked with a prime are applied to the form shown in Figs. 6 and 7.

In all of the forms, the neb may be provided with one or more upstanding fingers 20, which may be double fingers as illustrated in Figs. 1, 2 and 6, or there may be a single finger, as shown in Figs. 1 and 2. These double fingers are provided for receiving the journal of a roll clearer 21, which may rest on the front top roll, and which is designed to clear lint therefrom. The second and third top rolls, in the form illustrated, are preferably kept clean by a stationary clearer 22, which rests on the top rolls and is guided by the single finger 23. These fingers may be variously formed, but are preferably pro-l Hatented eh. 4,. 1958.

n provide ,a housing. which .is,preferably -'fo rmed of. relatively, heayy. gauge vided with a base 24, which may be projection welded to the top of the housing, as is shown quite clearly in Fig. 6. Any or all of the nebs, as indicated, may be provided with single or double fingers, and the nebs may be provided with feet or projections 25 (Figs. 2 and 6), which may rest on a part of the roll frame to support the cap bar in place.

It will be seen that I have provided an improved form of neb, wherein the parts are simple and inexpensive to manufacture. Furthermore, the nebs are very light in weight and are easily installed, adjusted, and supported. The wearing surfaces come not on the neb housing, but on the wood or other non-metallic cores, and, as indicated, very seldom or never is outside lubrication required. In case of excessive wear, or breakage, or damage to the core. a new one may be readily installed at small expense. The outer surface of the neb presents a flush, clean-cut appearance, and lint is not likely to collect on the neb, and, in general, my neb presents several improved and advantageous features.

While the invention has been described in considerable detail and a preferred form illustrated, it is to be understood that changes may be made within the scope of the invention as defined in the appended claims.

I claim:

1. A neb including a non-metallic core, a housing of generally open U-shaped cross section extending over the top and two sides of said core, said core having a bore therethrough, the legs of said generally open U- shaped housing having apertures registering with said bore, the top of said U-shaped housing having an aperture over and at substantially right angles to said bore, said core having a bore registering with said last mentioned aperture and intersecting said first mentioned bore, whereby a set screw in said last mentioned aperture may engage a cap-bar finger extending through said first bore in said core to hold the neb in place on said finger.

2. A neb including a non-metallic core having bearing surfaces for a top roll journal, a generally open U-shaped metal housing member extending over the top and two sides of said core, said housing having an opening and said core having a through bore registering with said opening, said opening and bore providing a through bore for receiving a cap-bar finger, said core and top of said housing having a second pair of registering openings intersecting said bore to receive a set screw, 9. set screw in said openings whereby said cap-bar finger and set screw will hold said core unitarily assembled with said housing.

3. A neb including a non-metallic core, a housing for said core, said core and housing having a bore for receiving a cap-bar finger, said housing and core having registering openings forming a set screw bore at an angle to and intersecting said first bore, said opening in said housing having an inturned internally threaded burr and said registering opening in said core being larger than said burr whereby the latter is freely received in the core opening.

4. A neb including a one-piece core, having notches in opposite sides thereof to provide radial and axial bearing surfaces for the journals of two top rolls, a generally open U-shaped housing strap extending over the top and two sides of said core intermediate said notches, said housing and core having a through bore intermediate said notches for receiving a cap-bar finger, and a second bore at an angle to and intersecting said first bore to receive a set screw to hold the neb in place on said finger.

References Cited in the file of this patent UNITED STATES PATENTS 408,275 Tweedale Aug. 6, 1889 879,641 Houghton Feb. 18, 1908 1,443,111 Albrecht Ian. 23, 1923 2,560,134 Schroeter July 10, 1951 2,601,371 Cotchett et a1 June 24, 1952 2,794,215 Dayvault June 4, 1957 FOREIGN PATENTS 764,209 France May 17, 1934

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