US2659108A - Trumpet for use in textile industry - Google Patents

Description

NOV. 17, 1953 BRADLEY 2,659,108

TRUMPET FOR USE IN TEXTILE INDUSTRY Filed 001;. 24. 1949 INVENTOR. JOHN J. amqazar ML MvPPfiM Patented Nov. 17, 1953 TRUMPET FOR USE IN TEXTILE INDUSTRY John J. Bradley, Grosse Pointe, Mich, assignor to The Gear Grinding Machine Company, Detroit, Mich., a corporation of Michigan Application October 24, 1949, Serial No. 123,150

2 Claims.

The invention relates to the so-called trumpets used in the textile industry and functioning to condense a thin wide ribbon of fibers into a dense cohesive sliver of circular cross section.

It is the object of the invention to obtain a construction which is very exact as to size, has great durability and can be replaced when necessary without change in the associated parts of the structure.

It is a further object to obtain a construction the appearance of which is indicative of the size.

With these objects in view the invention con sists in the construction as hereinafter set forth.

In the drawings:

Figure 1 is a section of my improved trumpet in an axial plane thereof;

Figure 2 is an elevation of the mouth end thereof.

A trumpet for use in the textile industry is formed with a conical flaring mouth and with a cylindrical extension from the small end of the cone, which is of the exact internal diameter required for forming a particular sliver. In use trumpets become Worn so that the dimension of the cylindrical portion is enlarged and is no longer suitable for the particular work. It must therefore be replaced, and the discarded part is no longer useful for any purpose. My improved construction of trumpet is provided with a replaceable lining, which is formed of more durable material than that from which trumpets are usually constructed. Furthermore, the lining is die-fashioned so as to be of the exact dimension desired. However, if wear should occur, the lining is easily detached and replaced without change in the other portion of the structure. As illustrated, A is a member of generally trumpet form but of larger internal dimensions than suitable for a particular use as a trumpet. B is a liner preferably formed of a molded or die-fashioned plastic material such, for instance, as nylon. This liner is insertable within the member A and is frictionally secured thereto, preferably by forming both members with corresponding tapered engaging surfaces C and D. The liner has a conical mouth portion E and a cylindrical portion P which is of the exact internal diameter required for the forming of a particular sliver. The mouth portion E has a radially outwardly extending flange portion G, which coves the end of the member A to protect the same. The member A has an annular external groove H for fitting the supporting frame (not shown).

With the construction just described, the liner is more durable than most trumpet constructions, particularly if they are formed of metal. Also, as the liner is die-fashioned, it will always be of the exact size required. Liners having different dimensions in the portions F thereof may be used with a standard construction of the memher A and, whenever necessary, the liner can be easily removed and replaced by another.

As trumpets are made in various sizes, which can not be easily distinguished from each other except by calibration, it is advantageous to form my improved liner so as to be visually indicative of its exact size. This I preferably accomplish by coloring the liner, a particular color designating a particular size. Thus where replacements are necessary, the proper liner may be easily selected from the stock by its color. Should the liner become worn, it can be replaced by pressing against the small end of the taper which will disengage it from the member A. A replacement may then be inserted in said member.

Some of the advantages of my improved construction are:

1. Longer life (approximately 4-6 to 1).

2. It is considerably cheaper to produce and eliminates all sizing operations.

3. It is cheaper and easier to replace when the orifice wears beyond specified size.

4. It is cheaper and easier to stock standard sizes.

5. Identifies a specific size by appearance, such as a particular color.

6. The liner is frictionally interlocked with the supporting body so as to be easily detachable and replaceable.

I claim:

1. A textile trumpet comprising a stress carrying body portion of generally trumpet form for permanent installation in a textile machine and an exchangeable liner formed of die-fashioned plastic material, said liner being of exactly predetermined internal and external form and dimensions and fitting within said body portion to be frictionally held thereto also completely covering the inner face of said body portion and extending over the large end thereof.

2. The construction as in claim 1 in which said liner has a portion at its small end which is of but slight taper externally to fit a corresponding taper in the body portion and to be frictionally held thereby.

JOHN J. BRADLEY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,675,556 Howie July 3, 1928 1,917,699 Casablancas July 11, 1933 1,956,338 Bartling Apr. 24, 1934 2,060,964 Wider Nov. 17, 1936 2,076,751 Thierfelder Apr. 13, 1937 2,206,232 Martin July 2, 1940 2,320,591 Haley June 1, 1943 FOREIGN PATENTS Number Country Date 222,775 Switzerland Oct. 15, 1942

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