Laboratory apparatus for dyeing textile fabrics
AssigneeE. I. Du Pont de Nemours and Company
InventorsJulie L. Chang, Darwin E. Ferster, Robert E. Shamrock
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Abstract
Apparatus in accordance with the invention is of the type in which textile fabric samples are dyed in a generally cylindrical vessel containing a liquid dyeing bath while being moved in a cyclical fashion by a sample holder having a generally vertical rod connected to an overhead stirrer. The improved apparatus includes means connected to the generally vertical rod for holding the textile fabric sample in a generally cylindrical configuration, a pump for pumping a concentrated chemical solution at a controlled rate, and means for supplying the concentrated chemical solution from the pump under the surface of the dyeing bath in at least two vertically spaced-apart locations.
Claims20
In laboratory apparatus for dyeing textiles, said apparatus being of the type in which textile fabric samples are dyed in a generally cylindrical vessel containing a liquid dyeing bath while being moved in a cyclical fashion by a sample holder having a generally vertical rod connected to an overhead stirrer, the improvement which comprises:
- means connected to said generally vertical rod for holding the textile fabric sample in a generally cylindrical configuration;
- an independent pump for pumping a concentrated chemical solution at a controlled rate;
- and
- means for supplying said concentrated chemical solution from said pump under the surface of said dyeing bath in at least two vertically spaced-apart locations.
An improved sample holder for use with laboratory apparatus for dyeing textiles of the type in which textile fabric samples are dyed in a generally cylindrical vessel containing a liquid dyeing bath while being moved in a cyclical fashion, said sample holder comprising a generally vertical rod for connection to an overhead stirrer, the improvement comprising:
- two spaced-apart disks mounted on said rod in a generally parallel relationship, each of said disks having a disk edge contacting said fabric sample and holding said sample in a generally cylindrical configuration;
- and
- an annular groove in each of said disk edges;
- and
- a resilient ring dimensioned to fit snugly into each of said annular grooves.
Dependencies are inferred from the claim text.