Patent GB-693393-A (GB)
Title: Fibre blending apparatus
IPC: D01G13/00
Filed: 1951-02-28
Abstract: 693,393. Preparing fibres for spinning; blending fibres. PROCTOR & SCHWARTZ, Inc. Feb. 28, 1951 [May 26, 1950], No- 4827/51. Classes 120(i) and 120(iii) A fibre blending apparatus comprises a plurality of automatic weighing devices. operable to receive fibres and discharge them in lots of predetermined uniform weight, a single conveyer extending in common to the weighing devices, and an intermediate conveyer interposed between each weighing device and the single conveyer and having a blade co-operable there-- with to form into a continuous mat the fibres discharged from the weighing device on to the intermediate conveyer, the intermediate conveyers operating to deposit the continuous mats in respectively superimposed relation upon the single conveyer to provide a multi-layer mat of the fibres. In the apparatus shown, Figs. 2-5 and 8, for blending three different types of fibre, fibre opened by a breaker feed 11 is delivered by a condenser 14 on to conveyer belts 15 the middle two of which are reversible so that the fibre can be delivered selectively to any of three distributing bins 17, each bin holding a different type of fibre. Each bin comprises a conveyer 18 and breaking-down rolls 19 and delivers fibre to a weighing feeder 21, which deposits the fibre in weighed amounts on to a conveyer belt 24 on which the fibre is spread evenly by a lay blade 25, pivoted at its forward end, to form a mat 27 containing a single type of fibre. Belts 24 deliver the three mats 27 in superimposed relation on to a single conveyer 26 to form a composite multi-layer mat 27a containing the three types of fibre. Mat 27a passes to a picker 29, whence the picked fibres are delivered by a condenser selectively to any of three weighing feeds each feeding a carding machine 37 ; the three carded webs from cards 37 are lapped on to a conveyer 43 by intermediate feeds 42, the multi-layer web 44 thus formed being fed to a final carding machine 45, the delivery web from which is further processed as desired. In a modification, the initial breaker feed delivers selectively to three storage rooms for the three different types of fibre. Fibre from each storage room is fed manually to one of three weighing feeds arranged like feeds 21 to form a composite multi-layer mat which is then fed to a picker. In another modification, the three weighing feeds forming the composite mat are each fed from a separate breaker feed and distributer bin; the composite mat is then fed to a picker. In a further modification, Fig. 15, the mixed fibre from picker 29 or from the pickers of the previous modifications is delivered by a condenser 75 to a weighing feed 77 and carding machine 79. The web from card 79 is discharged in four strips by a former 80 having triangular portions 81, the four fibre strips being superposed in twos to form two composite strips which are lapped by intermediate feeds 84, 85 on to conveyers 86, 87 leading to final carding machines 88 delivering eight slivers into a multiple-can coiler 90. Such a multiple-can coiler may be used on one or all of the initial carding machines 37, carding machine 45 then not being used, or on the final carding machine 45.