US1764074A

US1764074A - Process and apparatus for preparing staple or fibrous material for spinning

Info

Publication number: US1764074A
Application number: US314894A
Authority: US
Inventors: Gminder Emil
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-11-02
Filing date: 1928-10-25
Publication date: 1930-06-17
Anticipated expiration: 1947-06-17

Description

June 17, 1930. E. GMINDER 1,754,074

' PROCESS AND APPARATUS FOR PREPARING STAPLE OR FIBROUS MATERIAL FOR SPINNING Filed Oct. 25; 1928 INVENTOR Emil mz'nder I BY MWWW

ATTORNEY Patented June 17, 1939 UNE EMIL GMINDER, ()F REUTLINGEN, GERMANY PROCESS AND APPARATUS FOR PREPARING STAPLE R FIBROUS MATERIAL FOR SPINNING Application filed October 25, 1928, Serial No.

The fibres which protrude from loose fibre structures, such as lap, roving, fibre bands, etc. often interfere with the subse quent treatment. This does not present serious difliculty with soft, short fibres, such for instance as cotton, but with long, rough and harder fibres, such as raw untreated fibres, these protruding ends interfere with the proper spinning.

The object of my invention is to provide for the smoothing down of these protruding ends without effecting a twisting or rotation of the main fibre body of the structure.

Although the invention is applicable to various forms of fibre structures, particularly those which are to be spun, I will refer to such structures as lap and use the word lap in a broad sense to include rovings and other analogous fibre bands.

In carrying out my invention the fibres protruding from the edges of the lap are mechanically flattened down during the formation of the lap.

For carrying out the invention I provide a rotating tool which is preferably funnel shaped and through which the lap is passed.

This funnel is of such diameter at its smaller or delivery end that it will contact with and act on the protruding fibre ends at the edges of the lap, but will not offer such resistance as will cause the lap to be rotated about its axis as is the case with a spinning tube. It is important that the lap is not rotated during this smoothing down operation.

In the accompanying drawings I have itius rated one embodiment of my invention.

in these drawings: I l is a side elevation of the rotating 1 tool or funnel with conventional representation of delivery and receiving means; and Fig. 2 is a top plan view of the funnel alone.

In the construction illustrated the lap or 45 hand of fibres passes from feeding means it) to delivering means 11, these being conventionally illustrated as. rollers. Between the two there is provided an annular member 12 which is in the form of a comparatively short funnel. The upper or receiving 314,894, and in Germany November 2, 1927.

end is of a diameter equal to or slightly greater than the width of the lap which is passed therethrough, while the smaller or delivery end is of such diameter that it may effect a very slight contraction or reduction in the width of the lap.

This funnel is rotated at a speed which depends upon the rate of travel of the lap and sufficient to mechanically smooth down the fibre ends protruding from the edges and bring them closely adjacent to the main mass of fibres. To facilitate this the upper or larger end of the funnel may be provided with a plurality of ribs or projections 13. These do not extend to the lower end and they do not extend in radially to a distance equal to the taper of the funnel. In other words the circle of the inner ends of these projections is larger than the outlet end of the funnel as shown particularly in Fig. 2.

Thus they catch the loose fibre ends and turn them in a helical direction along the surface of the body of the fibres, but do not engage the body itself to such an extent as will cause rotation or twisting of the lap.

Any short fibres which project from the opposite surfaces of the lap will not be affected by the rotating action, but they will be smoothed down by the rollers 11, which latter also press down the fibre ends which had protruded from the edges of the lap and have been folded over by the rotating action.

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

1. The process of preparing lap for spinning which includes the step of rotating a member around the lap to smooth down the fibre ends protruding from the edges, but without effecting rotation of the body 0 the lap.

2. The process of preparing lap for spinning which includes the step of applying a circumferentially acting force to the edges of the lap during the endwise movement of the latter, said force being insufiicient to effect a rotation or twisting of the body of the lap.

3. The process of preparing lap for spinning which includes moving the lap endwise through a rotating funnel, the outlet of Which is of such size in respect to the size of the lap that it acts only on the protruding fibre ends and does not impart a twisting action to the lap. V c

4. An apparatus for preparing a lap for subsequent treatment Which includes a rotatable funnel havingitsinlet end approximating the size of the lap and its outlet end but slightly smaller.

5. An apparatus for preparing a lap for spinning which includes a rotatable funnel having inwardly extending ribs or projectionsat the larger or inlet end, the spacing of said ribs or projections from the axis being more than the radius of the smaller or outlet end. r

Signed at Stuttgart, Germany, this twelfth day of September, A. 11 1928.

EMILGMINDER.