Other

Texas Industries, Inc.

Virgil L Sewell

Philip H Harris

Martha A Sewell

James L Stevens

A device permitting yarn or the like to be pulled from a skein by the performance of a handcraft such as knitting. A spindle passes through the skein and a support structure holds the spindle in a vertical position. The support structure includes a base, an upright attached to the base, and a spindle support at the top of the upright. The base and spindle support have means rotatably attaching them to the upright to allow folding up the device for storage and portability. However, means are provided to fix the position of the upright with respect to the base, when the device is in use. The ends of the spindle fit into recesses in the base and spindle support. The means for attaching the spindle support to the upright allows the spindle support to rotate upward so that the spindle can be inserted in and removed from the recesses. The spindle has a spacer attached near its lower end to hold the yarn away from the base. In a preferred embodiment, the recesses into which the yarn spindle fits are provided with bearing surfaces to reduce rotational friction.

Handcraft yarn dispenser

Method and apparatus for manufacturing portland cement characterized by a plurality of steps. First, there is introduced into the feed end of a rotary kiln at a first rate a first mixture containing calcareous material for the cement; and at a second rate a second mixture including at least one of argillaceous material and siliceous material for the cement. Either or both mixtures may be coarsely ground. Next, there is introduced into the combustion zone of the kiln at a third rate a third mixture and a fuel, the third rate of the third mixture being complementary with the second rate of the second mixture and the first rate of the first mixture so as to form a balanced cement clinker for the cement, the cement clinker being discharged from the discharge end of the kiln for further processing into the desired final form of the cement. Also disclosed are more specific embodiments including respective sampling and analysis procedures at a plurality of points in the kiln system and the respective altering of proportions of the mixtures to maintain an exceptionally high degree of on-line control over the quality of the final cement clinker; the admixture of the first and second mixtures with slurry for a combination process that has the advantages of both the wet and dry processes; the manufacture of special purpose cement; and the specific apparatus and advantages.

Growing community of inventors

Dallas, TX, United States of America

Virgil L Sewell