US2370180A

US2370180A - Yarn forwarding apparatus

Info

Publication number: US2370180A
Application number: US521587A
Authority: US
Inventors: Mccrosky Robert Duncan
Original assignee: EI Du Pont de Nemours and Co
Current assignee: EIDP Inc
Priority date: 1944-02-08
Filing date: 1944-02-08
Publication date: 1945-02-27
Anticipated expiration: 1962-02-27

Description

Feb. 27, 1945. R. D. MccRcsKY 2,370,180

YARN FORWARDING APPARATUS Filed Feb. 8, 1944 Robelj'llm-Crokkg 7 ATTORNEY not the yarn.

Patented Feb. 27, 1945 YARN FORWARDING APPARAT US Robert Duncan McOr-osky, Richmond, Va., as-

slgnor to E. L du Pont de Nemours & C

mpanr,

Wilmington, Del., a corporation of Delaware Application February 8, 1 944, Serial No. 521,587

3 Claims. (Cl. 28-715) This invention-relates to yarn forwarding apparatus, and more 'particularlyit relates to an improved construction of yarn forwarding apparatus comprising a feed wheel having peripheral yarn feeding surfaces of increasing ,diameterfrom front to rear.

Yarn forwarding apparatus comprising a socalled stepped" feed wheel, having peripheral yarn feeding surfaces of increasing diameter from front to rear, and a yam guide roller spaced therefrom. are c mmonly used in the transport of yarn from a spinning bath to a'collecting device, for example a spinning bucket. The use of such a stepped feed wheel and spaced guide roller involves an objectionable operational difficulty in positioningthe yarn thereon. After the yarn has been passed around the peripheral yarn feeding surface of smaller diameter and about the spaced yarn guide roller, the operators hand cannot pass to the yarn feeding surface of larger diameter without obstruction by the yarn passing to the, said surface of smaller diameter. This necessitates transferring the yarn from one hand to the other and around the yarnpassing to the surface of smaller diameter. As the spinning speeds are gradually increased, this ,becomes a feat which not all operators can perform.

It is therefore an object of this invention to provide a yarn forwarding apparatus comprising a stepped feed wheel and a spaced yarn guide roller which can be easily threaded with one hand.

It is another object of this invention tocon- 1 struct a yarn forwarding apparatus comprising a stepped feed wheel and a spaced yarn guide roller which can be easily threaded without passing the yarn about a previously threaded portion Other objects of the hereinafter.

The above objects can be accomplished by invention will appear Figure 3 is a top plan view of the apparatus shown in Figure 1. A

Referring to the drawing, reference numeral 8 designates a stepped feed wheel comprising a yarn feeding surface 8 of any given diameter, a

yam feeding surface in of a greater diameter than 8, and a beveled fiange I! which is adapted to remove liquid from yarn feeding surface it and throw the same, by centrifugal force, into flanged disk: H from which it may be drained in any desired manner. The feed wheel 8 is driven at any desired peripheral speedthrough shaft l'l. A yarn guide roller lt ispositioned a short distance from the feed wheel 6. The guide roller I6 is usually freely rotatable and yarn driven, and it functions to pass yarn 22 from yarn feeding surface 8 to yarn feeding surface In. Preferably,'roller I8 is so positioned relative to the feed wheel that. the yarn passing from surface 8 first contacts flange IQ of the roller (see Figure 2). By firstcoming in contact withfiange the provision of means .for passing yarn to the feeding surface of smallest diameter defined by the peripheral surthrough the space I faces of the feed wheel and the yarn guide roller and the common tangents to these surfaces.

paratus shown in Figure 1;

yarn forwarding apparatus about roller guide l8,

l8, the yarn rolls along this flange until it contacts the yarn guide surface of roller l8 and thereby impartsa false twist to' the yarn and maintains the yarn filaments in a compact bundle.

Two freely rotatable, grooved yarn guide rollers l8 and 20 are positioned to pass the yarn from its source, for example a spinning bath, to the smaller diameter yarn feeding'surface 8 through the space defined by the peripheral surfaces of feed wheel 8 and guide roller' l8 and the common tangents to these peripheral surfaces.

Guide roller I8 will therefore be positioned at some point rearward of yarn feeding surface It. and guide roller 20 will be positioned at some point within the above-defined space. By this construction of guide rollers l8, I8 and '28 and stepped feed wheel 8, the yarn can be threaded onto the yarn forwarding apparatus with one hand in a continuous motion in the following manner: The yam 22 .is passed from its'source about guide roller l8, thenabout guide roller 20, then about yarn guiding surface 8, then then about yarn guiding surface It, and then to its destination as shown by the arrows in Figure 2. I For purposes of clarity and simplicity, the illustrations and the accompanying description are directed to a feed wheel having only two steps, 1. e., two yarn contacting surfaces of different. diameteryand a cooperating yarn "guide roller having a single yarn contacting surface. It is believed to be quite apparent from thisdescription that the feed W11 1 may have any desired.

number'of' steps and the yarn guide roller it may also be provided with a similar series of steps, or a plurality of separate, cooperating yarn guide rollers may be provided to forward the yarn between each two steps of a multi-stepped feed wheel.

Furthermore, by the use of a feed wheel having slightly conical yarn forwarding surfaces and with the axes of the feed wheel and the cooperating yarn guide rollers slightly askew to each other, as shown in the drawing, several wraps of the yarn can be taken about each step of the feed wheel and yarn guide roller.

Since it is obvious that many changes and modifications can be made in the above-described details without departing from the nature and spirit of the invention, it is to be understood that the invention is not to be limited thereto except as set forth in the appended claims.

I claim:

1. Yarn forwarding apparatus comprising a feed wheel having peripheral yarn feeding surfaces of increasing diameter from front to rear, a yarn guide roller spaced from said feed wheel and adapted to guide the yarn from one-yarn feeding surface'to another yam feeding surface of greater diameter, and means for passing yarn to the yarn feeding surface of smallest diameter aerated through the space defined by the peripheral surfaces of the wheel and roller and the common tangents to these surfaces.

2. Yam forwarding apparatus comprising a feed wheel having peripheral yarn feeding surfaces of increasing diameter from front to rear, a yarn guide roller spaced from said feed wheel and adapted to guide the yarn from one yarn feeding surface to another yarn feeding surface of greater diameter, and yarn guide rollers positioned for passing yam to the yarn feeding mirface of smallest diameter through the space defined by the peripheral surfaces of the wheel and roller and the common tangents to these surfaces.

3. Yarn forwarding apparatus comprising a feed wheel having peripheral yarn feeding surfaces of increasing diameter from front to rear.

a yarn guide roller spaced from said feed wheel and adapted to guide the yarn from one yarn feeding surface to another yarn feedingv surface of greater diameter, and grooved yarn guide rollers positioned for passing yarn to the yarn feeding surface of smallest diameter through the space defined by the peripheral surfaces of the wheel and roller and the common tangents to these surfaces.

. ROBERT DUNCAN