Патент USA US2136923код для вставки
Nov. 15, 1938.. B, PROSS 2,136,923 METHOD OF AND DEVICE FOR PRODUCING SLUBBING 0N DRAWING FRAMES Filed June 29, 1937 2 Sheets~Sheet l Nov. 15, ' 1938. B. PROSS 2,136,923 METHOD OF AND DEVICE FOR PRODUCING SLUBBING' ON DRAWING FRAMES Filed June 29, 1937 159. a 2 Sheets-Sheet 2 H9. 7 722002 for: Patented Nov. 15, 1938 r 2,136,923 UNITED STATES PATENT oF-Fics' METHOD or AND DEVICE FOR PRODUCING SLUBBING 0N DRAWING FRAMES Bernhard Pross, Bocholt, Germany Application June 29, 1937, Serial No. 150,985 , In Germany September 23, 1936 5 Claims. (Cl. 19-457) This invention relates to a method of and de vice for producing slubbing on drawing frames with the object of obviating several hitherto re quired working operations on the ?ier. According to the invention the slivers, after C71 having passed through the ?rst drawing frame, are led either singly or in combination, through a non-rotary condensing funnel and then passed between pressing rolls which are under the in fluence of pressing elements. In this manner two or all the working operations on the ?iers will be obviated. The funnel or funnels is or are so arranged that the delivery‘ end will be in close'proximity to and almost in contact with the pressing rolls one of which is urged against the other by a force greater than its weight. The receiving containers are preferably sub divided by partitions. The invention also includes a particular con 20 struction of the funnel which has a three cm. long, cylindrical or tapering delivery passage at the‘ end of which a clamping spring or springs are provided. _ l I By the improved method the material will be subjected to a very tender treatment. A greater part of the count ?uctuations on the fliers will be obviated. The tensile strength of the yarn will be considerably increased. The amount of slubbing containable in each receiv 30 ing will be increased by about two thirds of the weight. Moreover, the improved method and device ensures a reduction of about 60% in the number of operatives required, and at the same time a saving of power is obtained in connec 9 tion with the ?iers. While the resulting slubbing can be received in the ordinary cans, it is preferable to employ receiving containers divided by partitions into rectangular compartments. 40 The method can be carried out by means of existing drawing frames, and no new, expensive, additional devices will be required. According to the invention the slivers~ob _ tained from the ?rst drawing frame are led singly or in combination through a condensing funnel, the delivery ori?ce of which is located just above the nip of the pressing and drawing rolls whereby the ?bres will be drawn out, paral 50 leled and condensed into a very ?rm slubbing. The slubbing will be ?rm enough to obviate, ac cording to the desired count of the yarn, two or three flier passages or even to be spun directly on the ring spinning machine. Fig. 1 of the accompanying drawings repre 55 sents a plan view of a device for carrying‘ out the improved method, ‘ Fig. 2- is a diagrammatic side view of the de- ' vice, ' Fig. 3 is a side view of one of the funnels,” ‘ ~I‘ Fig. 4 is a vertical section of the'funnel, Fig. 5 is an inverted plan view of the funnel‘, and 1 Figs. 6 and '7 are views at right angles to each other of a modi?ed‘form of the funnel; ' From the well known last but one drawing frame the slivers are deposited in'can‘s I. From the latter the slivers pass through small‘con densing funnels 3 ?tted with clamping‘ springs and then between well known drawing ‘rolls 4. 115 The drawn out slivers then pass over a guide plate 5 and through specially oonstructed‘ffu‘n nels 6 provided with clamping springs; The slub bing thus obtained is compressed between pressL ing rolls 1 and 8. The funnels 6 are arranged with their lower pointed ends in close proximity to and almost in contact with the rolls 1, 8 but slightly out of symmetry therewith, as shown in ‘Fig. 2. Instead of bearing against the roll 1 by gravity in the usual manner, the roll »8 bears .25 against the latter with a pressure greater than its weight. ' The funnels 3, 6 have each a cylindrical or tapering delivery passage 9 about 3 cm. in length. Applied to the outside of the funnel are blade 30 springs I0 the free lower ends of which are ‘channelled and adapted to mesh under spring action so as to condense the slubbing still fur ther as it passes between them. The springs are adapted to yield to projecting elements on‘ 35 the slubbing and let them pass without break age of the latter. One of the springs may be omitted, in which case the funnel is provided, as shown in Figs. 6 and 7, with a laterally deposited outlet ori?ce 40 l2 against which the channelled end of the re maining spring is adapted to bear for condensing the slubbing. The funnels may be made of metal, but they are preferably made of some acetyl-cellulose or hydrocarbon (mixed polymerizate) substance. The guide plate 5 is provided at its front end with semicircular incisions whereby it engages the funnels 6 for the better guidance of the sliver bands. ' 50 The slubbing delivered by the rolls 1, 8 is re ceived in a container l3. The latter is box shaped and divided by partitions l4 into rec tangular compartments for the reception of the slubbing. The container is reciprocated under 55 2 2,136,923 the pressing rolls for the uniform distribution of the slubbing within the compartments. The rectangular shape of the compartments has the advantage of accommodating the largest amount of slubbing. The walls and partitions of the con tainer may be provided with vertical slits through which a tool can be passed for compressing the slubbing within the container. The slits also allow the emptying progress of the container 10 to be conveniently inspected when the container is placed on the ring spinning machine. Rollers 29 are arranged above the container ii for the purpose of packing the slubbing into the container when the latter is full. The funnels 3 condense the slivers and keep 15 them at suitable distances apart between the drawing rolls. The funnels 6 further condense the slivers and turn them into a very ?rm slub bing. Additional funnels may be employed for 20 leading the slubbing into succeeding drawing frames if such are employed. The slubbing delivered by the device has a tearing length of 18 meters. This effect is ob tained by the springs I 0 and by the additional pressure of the roll 8. The compartments of the container l3 have each an area of 21/; x 12 inches. This corre sponds to the diameter of 9 inches of the usual round cans. The width of 21/2 inches corresponds 30 to the spacing of the spindles in the ring spin~ ning machine, and the container will therefore be conveniently accommodated on the machine. The weight of the slubbing containable in each compartment has been found to be 5,000 grams, 35 1. e., one month’s supply for one spindle. Usu ally a'spool of 250 grams is exchanged for each spindle every other day, so that the improved arrangement will effect a considerable saving of work. The new method according to which the slivers 40 are led through one or more funnels instead of through three fliers as usual, is the commence ment of a new development in spinning practice. The funnels are added to the ordinary drawing 45 frames. I claim: 1. A method for producing slubbing on draw ing frames, consisting in feeding the sliver in the state it leaves the drawing frame through a funnel at the last pass of the drawing frame, in resiliently gripping the sliver on all sides as it leaves the funnel to produce a retarding moment and bring all the ?bres even the smallest in par allel, and then feeding the sliver directly be tween taking up rolls. 10 2. An arrangement for producing slubbing on drawing frames, comprising in combination with a drawing frame, at least one funnel at the de livery end of said frame, said funnel having a substantially 3 cm. long delivery passage, and 15 blade springs surrounding the outlet of said passage. 3. Anarrangement for producing slubbing on drawing frames, comprising in combination with a drawing frame, at least one funnel at the de livery end of said frame, said funnel having 20 a delivery passage with a substantially straight inner wall, and blade springs surrounding the outlet of said passage. 4. An arrangement for producing slubbing on 25 drawing frames, comprising in combination with a vdrawing frame, at least one funnel at the de livery end of said frame, said funnel having a delivery passage with a substantially straight inner wall, blade springs surrounding the outlet 30 of said passage, and a pair of taking up cylin ders, the outlet of said passage delivering di rectly in the nip between said taking up cylinders. 5. An arrangement for producing slubbing on drawing frames, comprising in combination with 35 a drawing frame a plurality of funnels at the delivery end of said frame, blade springs sur rounding the outlet of each of said funnels, a pair of taking up rolls directly below the delivery end of said funnels, a slubbing container located between said rolls, and partitions dividing said container into compartments each compartment adapted to receive a slubbing from one of said funnels. ' BERNHARD PROSS.