US1692836A - Dabbing brush for wool-combing machines - Google Patents

Description

DABBING BRUSH FOR WOOL COMBING MACHINES Filed May 12, 1927 A TTOKNEDI v Patented Nov. 27, 1928.

UNI TE D S T A PATRICK HENRY, OF

PATENT 'OFFICE BRADFORD, ENGLAND.

DAZBBING BRUSH' FOR WOOL-COMBING MACHINES.

Application filed May 12, 1927, Serial No 190,729, and. infGreat Britain February 25,1927.

Thisjinvention relates to improvementsin dabbing brushes used in combing W001. it has previously been PIOPOSQClKbY. me to eliminate from a dabbing brush a portion of the bristling namely that which is over thetangentit'ormed by themeetingoi the large. and small circles oi a Noble comb, and to substitute such bristling by air pressure dab and thereby give increased length of life to the brush and efiect aneiiic-ient dab at orabout the said tangent point. Accordingto the present inventionI. combine with a dabbing brush having an air aperture dab, an arrangementot knite like devices arranged in the brush in such wise that the said knives pass into, spaces between the rowsoi pins in the large circle, and in that part ofthe brush which dabs on to neither circle I discard most of the bristling and substitute what I term knife guards. Furtherin order to prevent the splaying OlltsOI the usual bunches of bristles especially around the edges of the brush I provide rows of short bristle as hereinafter more particularly described. By this means I form an eiiicient brush for its purpose with a comparatively long life, which also eifects a saving of time, with an increased production of the machine, by reason of less stoppages to change worn brushes for new ones, and by the elimination of neps and foreign matter from the top. There is also a saving as to stock of brushes required.

To carry out my invention and referring to the drawings which form part of the specification:

Fig. 1 represents a plan of the underside of a dabbing brush, and indicating the position of the two comb circles.

Fig. 2 represents a plan of the back of the brush.

Fig. 3 represents a section through the brush.

Fig. 4 represents a detail showing knives and supporting means. Fig. 5 represents an end view of the brush and Fig. 6 represents details of a modified form of knife.

To apply air pressure dabbing means to a dabbing brush, that portion of a dabbing brush which is immediately over the tangent of the two circles C and C (Fig. 1) is not bristled, in a suitable form a hole H, Figs. 2 and 3 is cut through the brush stock B and back B, and such aperture may be square, circular, oval, or V shaped with by preferin a shaped somewhat elongated narrow. nozzle'P, which when the brush int-lie. down position will be clear of the top-of the pins of thecircles as in The-brushbeing supported and dabbed by a suitable motion connectingto a foot or like, such as B 1101- I lowed out or cut away to permit the pipe? to pass, iihlSlOOt may takeany suitablelorm,

and is merely. indicated in Figs. 2 and 3. @By,

employing an air dab. at the areaimentioned an even and efficient dab is given to thewool,

and the tearing away of the bristle is eliminated and consequentlyrepair is not needed so often.

It will be noted that the air dab acts within an area surrounded by bristle with the exception of the part designated by H Fig. 1, here is only a row of short, stilt, bristle A into which the point-s of the circle pins only just enter. In place of a single jet I may employ a plurality of air jets.

There is always a tendency for the outer bristles to be forced somewhat out-wards and to limit this and stay or reinforce the bristling I continue the short stiff bristling entirely filOXIlCl the brush. This row is designated It will be understood that there will be a tendency for some of the air delivered by the pipe P to creep into the brush, and I propose to utilize this pressure to assist in dabbing into the large circle C, by mounting in the brush stock in lieu of bristle one or more knives or the like K, which will just abut on a wall of the air dab aperture and will present guides or smooth faces along which the air may pass. These knives will be so mounted as to enter between rows of pins in the large circles, and by usinga plurality of knives I can make them short and comparatively straight, but I may use undivided knives formed to the curvature of the spaces between the pins.

It will be noted that the area of the brush marked D, Fig 1, if bristled will serve no useful purposes. Therefore to the curvature of the large and small circles I form by depending knives or metal combs K*, a V within which the bristling may be omitted and the row A of stout short bristle may be omitted across the opening of the V. Between the knives K and the edges of the comb circle there will however be rows of bristle. This arrangement ensures the parting of the sliver as the circles diverge and the V prevents undue accumulation of wool in the area D.

The knives K are preferably provided with shoulders K which seat in recesses cut for their reception in the stock B, which recesses terminate in slots for the blade portion K to pass. The knives may be plain as in Fig. 4 or comb-like as in Fig. 6 but there will always be presented to the air current a plain face such as at or about the part K.

The action of the brush and the air pressure will give to the fibres the necessary dab and the gathering action of bristle will be consid erably reduced.

What I claim is 1. The combination with a dabbing brush provided with an air pressure dab at the tangent part of the two circles, of knives mounted between bristling to dab into the large circle, said knives acting as guides for the surplus air to distribute same over a larger area of the dabbing brush.

2. The combination with a dabbing brush provided with an air pressure dab at the tangent part of the two circles of knives mounted between bristling to dab into the large circle and a V shaped knife like fitting 'on that part of the brush which lies over the diverging space between the two circles.

3. The combination with a dabbing brush provided with an air pressure dab at the tangent part of the two circles, of an aperture around the air pressure supplying pipe, said aperture being surrounded by bristle on three sides, and on the other side by a row or rows of short, stout bristle, to eliminate the excessive escape of air, and tend to force air into other parts of the brush. 4:. The combination with a dabbing brush provided with an air pressure dab at the tangent part of the two circles, of knives mounted between bristling, said knives being adapted to dab into the large circle, the bristling of the brush being reinforced around its edges with a. row or rows of short, stout bristle. 5. A dabbing brush having an air pressure dab operating in an unbristled portion of the brush over the tangent of the two circles, provided with guide and dabbing knives communicating at one end with the air pressure dab chamber. V In testimony whereof I have signed my name to this specification.

PATRICK HENRY.

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