US1758517A - Feeding apparatus with carding device for carding machines - Google Patents

Description

H. o. HESS 1,753,517 FEEDING APPARATUS WITH CARDING DEVICE FOR CARDING' MACHINES May 13, 1930.

Filed July 20, 1928 I722/672%7-.1 W @Q QQM Patented May 13, 1930 UNITED s'r HEINRICH OTTO HESS, OF WINTERTHUR,

SWITZERLAND, ASSIGNOR TO THE FIRM 3' OH. JACOB RIE'IER & 00., LIMITED, F WINTERTHUR, SWITZERLAND FEEDING APPARATUS WITH GARDING pnvron son oARDING MACHINES Application filed July 20, 1928, Serial No.

The feeding of carding machines in fine cotton and carded yarn spinning is effected in various ways, according to the system used. In spinning fine cotton yarns laps 5 produced on lappers or pickers are fed to the cards This system is also'often used in factories spinning cotton-waste in which the operation takes place on roller cards instead of on the flat cards usual in fine cotton spinning. In carded yarn spinning the material to be spun is first thoroughly mixed on carding willows and then laid on the feed table of the first carding machineeither by hand or automatically by the well known automatic feeding and weighing apparatus.

Said feeding operation, performed either with laps or by a feeding and weighing apparatus'is, however, b no means suflicient to enable an even con ensed sliver to be produced by a single carding. Even if the material taken in its total width, is fairly uniform in weight and although a certain equalizing of the irregularities will take place on the cardin machine itself, nevertheless thicker and thinner places situated side by side are formed which become visible or perceptible in the web removed by the comb. If now a web dividing device is added to the carding machine for dividing said web into a plurality of strips of an exactly equal width and said strips are condensed to a roving, it will be found that the single ends of roving show irregularities exceeding considerably the limits allowed in spinning.

Recognition of the above fact led to United States Patents No. 1,642,17 8 and No. 1,658,860. According to the first patent the bat is doubled on the lapper, and according to the second on the feeding tabel of the carding machine itself. By this doubling in the transverse direction the differences maybe partially equalized and a fairly even feed to the carding machine is obtained.

However, it has been found in practice that the laps produced by the lappers are not so even as is necessary for obtaining a uniform yarn number with only a single carding. Furthermore, it happens that two or more thick places or thin places may acci- 294,228, and in Germany August 17, 1927.

dentally rest. one above the other and thus make 1 a cumulative unevennesss.

Another method of feeding carding Inachines includes means for winding the fleece produced by a breaker card on to rolls which are placed upon a laying and folding apparatus ttedto the finisher card. On this feeding arrangement lap rolls which have already been'carded once are wound ofi alternatively. They consist of web sheets or web ribbons suitably condensed to a bat. The disadvantage of this method resides in that only fibres already carded and condensed to a bat can be distributed on the feed apron. It isnotsuitable for'single card sets and the irregularities in the bat are not compensated completely, owing to the thickness of the bat as it is laid down.

My invention relates to an apparatus consisting of a licker-in, a dofier and a comb, built into a carriage mounted on'rails at a rightangle to the direction of operation of the carding machine and adapted to be moved to and fro overthe full width of the feed apron" of the card. This apparatus draws the bat to a thin web and folds this web in a readily understood manner, full width upon the'feed apron.

Thus, instead of having a bat doubled 4 to 6 fold as heretofore, we have 60 to 100 layers of a thin Web placed one upon the Fig. 1 represents a section through the i apparatus transversely of the feed-apron,

and v v Fig. 2 represents a longitudinal section,

' parts being broken away.

The laying and folding arrangement consists of a winding-off roller 6 upon which may be placed a lap roll a, and of a feed table I) with feed roller m, which feeds the fibres to the high speed licker-in c, from which they are delivered to the doffer f.

From this dofii'er the fibres are stripped by thecomb g in-the form of a web which passes between guide rollers Z0, is and is folded. in full width upon the feed apron i. In order to obtain an exact folding, these parts are mounted in a: carriage having wheels Z, Z, movable on' rails 11., n to and fro at a right angle to the direction of operation of the carding machine and at a speed which can be regulated exactly according to requirements. For the removal of the combed out impurities, separating blades (Z may be provided or a grid or a mote knife may be arranged. A dirt container or dust box it can be built in for receiving these removed impurities. The licker-in and the doifer are clothed in ac cordance withthe character of the material to be spun, and their speeds can be regulated in such a manner that either a carding operation or a simple transference of the fibres takes place between these two rollers.

Thelaying and folding apparatus operates in the following manner:

The material to be spun can be fed either as a lap running oif a roll a as shown in Fig.

1, or inthe form of layers laid by an auto matic feeding and weighing apparatus, to the feed table '6 and the feed roll m. This 'feed table might be replaced, if desired, by a second feed roll. The highspeed licker-in 0 receives the fibres from the feed roll and delivers them to the dolfer f, while simultaneously combing them. From the doifer they are stripped by the r comb g in the form of a thin web which is deposited in substantially horizontal folds upon the feedapron i of the carding ma.-

chine. 7

According to the speed of the feed apron,

which can be regulated exactly by means of change wheels, the thin web folds are laid one upon the other, as much as to 100 fold or more, to form an absolutely even bat, which is essential for an even condensed sliver. V

This simplest arrangement may be elaborated upon by the addition of' rollers or a cylinder if required by the nature of the fibres, asmay readily be understood.

,The feeding apparatus here shown and described can be employed incombination with fiat carding machines, roller cards or union cards, according to the purpose in view.

A further possibility is presented of again forming into a lap .roll the .fleece produced on this apparatus by using a suitable lapping machine, whereby it is possible to make laps for use on other carding engines or for other purposes.

Having now particularly described and ascertained the nature of my invention and in what manner the same is to be performed, Ideclare thatwhat I claim is:

1. A feeding apparatus for carding machines comprising, a carriage adapted to travel to and fro across the width of a feed apron, means on the carriage for transforming a lap or layer of uncarded material into a thin web of material, and means for depositing said web upon the feed apron in a multiplicity of substantially horizontal superimposed layers. i 2. A feeding apparatus for carding machines comprising, a carriage adapted to travel to and fro across the width of a'feed apron, means on the carriage for preliminarily carding the fibres, means for. reducing the lap or layer of material to a thin web, and means for depositing said web upon the feed apron in a multiplicity of substantiallyhorizontal superimposed layers. 3. A feeding apparatus for carding machines comprising, a carriage adapted to travel to and fro across the width of a feed apron, means on the carriage for preliminarily carding the fibres and for reducing the lap or layer of material to a thin web, said means including a licker-in, a dofier and a comb, andmeans for depositing said web upon the feed apron in a multiplicity of substantially horizontal superimposed layers.

4. A feeding apparatus for carding machines comprising, a carriage adapted to travel to and fro across ,the width of a feed apron, means for supplying a lap or layer of material to be treated, means on the car- I

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