US3364671A

US3364671A - Traveler inserts including ceramic wear resistant element

Info

Publication number: US3364671A
Application number: US525044A
Authority: US
Inventors: Louis H Morin
Original assignee: Coats and Clark Inc
Current assignee: Coats and Clark Inc
Priority date: 1966-02-04
Filing date: 1966-02-04
Publication date: 1968-01-23
Anticipated expiration: 1985-01-23

Description

Jan. 23, 1968 H. MORIN 3,364,671

I "I'RAVE LJEIR INSERTS INCLUDING CERAMIC WEAR RESISTANT ELEMENT Filed Feb. 4, 1966 E; J. IIF4' 3.

mvnvro Lou/s H. Mom/v ATTORNEY Patented Jan. 23, 1968 3,364,671 TRAVELER INSERTS INCLUDING CERAMIC WEAR RESISTANT ELEMENT Louis H. Morin, Bronx, N.Y., assignor to Coats & Clark Inc., New York, N.Y., a corporation of Delaware Fiied Feb. 4, 1966, Ser. No. 525,044 4 Claims. (Cl. 57-125) ABSTRACT OF THE DISCLOSURE A textile traveler including a wear resistant element comprising a metal strengthening member coated or covered, or partly coated or covered, with ceramic material to resist wear of thread or yarn which is passing through the traveler.

This invention relates to travelers employing inserts arranged in a molded plastic traveler body, wherein the insert presents a ceramic wear surface, upon which the thread is adapted to bear in the use of the traveler. More particularly, the invention deals in an insert of the character defined, wherein the ceramic element constitutes a coating or layer, at least upon that part of the insert exposed through the traveler for engagement by the thread and, wherein, the body portion of the insert is composed of a metal, light in weight and with which the ceramic is compatible or, in other words, to which the ceramic will adhere.

Still more particularly, the invention deals with an insert of the character defined, wherein the ceramic comprises a molded body mounted on and preferably keyed to a metallic insert and, wherein, said metallic insert includes means for keying the same in and to the molded plastic body of the traveler.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

FIG. 1 is a diagrammatic view of a traveler on an enlarged scale, with part of the construction being shown in section and illustrating one form of insert which I employ.

FIG. 2 is an enlarged section on the line 22 of FIG. 1, omitting background showing.

FIG. 3 is a side view of the hook end portion of a traveler, diagrammatically illustrating a modified form of insert.

FIG. 4 is an enlarged section substantially on the line 4-4 of FIG. 3.

FIG. 5 is a view, similar to FIG. 4, showing a modification.

FIG. 6 is a section on the line 6-6 of FIG. 4 showing only the insert.

FIG. 7 is a diagrammatic perspective view of the metallic or core part of the insert shown in FIGS. 4, 5 and 6.

FIG. 8 is a diagrammatic perspective view of a modified form of insert which I employ.

FIG. 9 is a section substantially on the line 9-9 of FIG. 8; and

FIG. 10 is a section on the line 101tl of FIG. 9.

While efforts have been made to utilize ceramics in forming travelers or wear members on travelers, this has not proved satisfactory because of the fragile characteristics of ceramics and stresses or strains to which the travelers are subjected invariably would result in the cracking or destruction of wear ceramic employed.

To overcome these objections, I have found that, by incorporating ceramics as a part of a metallic insert, the ceramic is protected against breakage and, by utilizing inserts composed of aluminum, magnesium, zinc or the like, the desirable degree of lightness can be maintained in an otherwise lightweight molded plastic traveler. With certain inserts, I utilize a coating or layer of ceramic, at least on that part of the insert exposed through the surface of the traveler or in molding a body of ceramics upon a metallic insert in such manner as to expose the ceramics of the insert through the part of the traveler subjected to wear by the thread in the use of the traveler.

Considering FIGS. 1 and 2 of the drawing, at 15 is shown a molded plastic traveler, having a small hook end 16 and a large hook end 17, in which a wear resistant insert 18 is positioned in the process of molding the traveler 15, as well-known in the art. The insert 18 comprises a metallic body 19, generally of the cross-sectional character defined, the central portion being generally of hourglass contour, and on all exposed surfaces of the body 19 is a coating or layer 2(2 of suitable ceramic applied thereto in any desired manner and finally fired in producing the smooth and glazed surface which is desirable in producing on the traveler 15 a wear resistant surface at 21, leaving side surfaces 22 of the portion 23 of the hook 17 unexposed for engagement by the thread, as will clearly appear from a consideration of FIG. 2 of the drawing.

At this time, it is pointed out that, in FIGS. 1 and 2, as well as in FIGS. 4, 5 and 6 of the drawing, the sectioning of the ceramic coating has been stippled, rather than to use the conventional sectioning, as the stippling appears to produce a better illustration. The conventional sectioning of the ceramic is illustrated, however, in FIGS. 9 and 10 of the drawing.

The irregular contour of the end portions 24 of the insert 18 is simply to establish anchorage and these end portions can be varied. However, as shown, the metallic body 19 of the insert, which can be made of aluminum, magnesium or zinc, could be molded or could be turned from a rod workpiece.

In FIG. 3 of the drawing, I have shown at 25 a modified form of insert disposed in the hook end 17' of a traveler, generally similar to the traveler 15' shown in FIG. 1. In FIG. 3, the insert is only roughly outlined to simplify this illustration. However, the insert 25 is shown in detail in FIGS. 4 and 6. The insert comprises a preferably molded metallic body 26 of metal, such as named, the body having a half-round hourglass contour in the portion 27 thereof. Centrally of the back of 27 is a projecting flange or plate 28, note FIG. 7, preferably having a plurality of apertures 29 therein. As shown in FIGS. 4 and 6, the metallic part 26 of the insert is coated throughout all of the exposed surfaces with ceramics, as at 36, this being accomplished by dipping or other process and, after the coating has been applied, the assemblage is fired to harden the ceramic, preparatory to use of the insert 25 in a traveler, as illustrated in FIG. 3 of the drawing. When molded in the traveler, it will appear that the portion 31 of the traveler enveloping the flange or plate 28 has the ceramic also passed through the apertures 29, as clearly illustrated in FIGS. 4 and 6 of the drawing.

Considering FIG. 5, here is illustrated a slight modification of the structure shown in FIGS. 4 and 6, wherein the metallic part 26 is the same as that shown in FIGS. 4, 6 and 7. However, the ceramic coating 36' extends onto inner surfaces of 27, as seen at 39'', but does not extend onto the flange or plate 28. The structure of FIG. 5 will minimize the amount of ceramic employed and, in

a dipping application, it is all a question of controlling the degree of submersion of 26 for reception of the coating.

In FIGS. 8, 9 and 10, I have shown another form of construction, wherein the metallic part of the insert simply comprises a plate 32, having a rounded recess 33 on one edge portion thereof terminating in rounded corners 34, preferably having apertures 35 therein. The other side portion of the metallic plate has a plurality of anchorage apertures 36 for reception of the plastic material of the traveler, similar to the showing in FIG. 5 of the drawing.

With this construction, instead of coating the metallic part 32 of the insert, I mold on the edge portion of the plate 32 having the apertures 35 therein an hourglasstype contoured ceramic body 37, as diagrammatically illustrated in FIG. 8 of the drawing. Upper and lower ends of the body 37 are in alinement with edge portions of the plate 32, as will clearly appear from the showing in FIG. 9 of the drawing. In molding the body 37 onto the plate 32, the ceramic will extend into the apertures 35, as seen at 38 in FIGS. 9 and 10, indefinitely keying 37 to the plate 32. However, when aluminum, magnesium and zinc are used in forming the plate 32, the ceramic will adhere thereto by virtue of being compatible with such metal.

After the ceramic body 35 has been molded, the body will then be fired to harden the ceramic in forming the smooth glazed surface thereof to provide the ultimate Wear surface on the traveler, in conjunction with which the inserts, as shown in FIGS. 8, 9 and 10, are employed.

For purposes of description, the ceramic parts of the inserts employed can be referred to as the ceramic element of the insert and this element is in the form of a coating or layer on at least part of the metallic body of the insert or as a portion molded on the metallic body.

In the several forms of construction shown, it will appear that, at all times, the metallic body of the insert includes what may be termed a rounded recessed portion, upon which the ceramic element is applied in presenting on the traveler in which the insert is arranged a rounded wear resistant surface defined by what has been referred to as the hourglass-type portion of the insert.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In molded plastic travelers of the character defined, a Wear resistant insert fixed, and partially embedded in a traveler, said insert comprising a metallic body having a rounded recessed portion, a ceramic covering for the recessed portion of said body and providing a wear resistant rounded surface on said insert exposed through part of the traveler, and means for keying the insert in said traveler.

2. A wear resistant insert as defined in claim 1, wherein said last named means projects from the hourglass contour part of said body.

3. A wear resistant insert as defined in claim 1, wherein said ceramic covering constitutes a coating on the metallic body.

4. A wear resistant insert as defined in claim 1, Wherein the ceramic covering constitutes a molded ceramic enveloping at least part of said metallic body.

References Cited UNITED STATES PATENTS 2,942,407 6/1960 Morin 57l25 2,961,826 11/1960 Morin 57l25 3,257,791 6/1966 Morin 57-l25 JOHN PETRAKES, Primary Examiner.