Kidder, Frank E. (Frank Eugene), 1859-1905, Nolan, Thomas, 1857-1926 · New York : W.T. Comstock · leaf 515
Fig. 503. is coiled on the shaft. The partition is hung upon powerful springrollers which exactly counter-balance the weight, so that the partitionmaybe coiled with comparative ease and will stay wherever put. … Fir. 504.—Casing for Wilsons Rolling Partitions. One side of the partition may be prepared with a flat smooth sur-face for blackboard use or decorative purposes if desired. COILING PARTITIONS. 509 For the Wilson partitions |-inch thick, the following spaces are re-quired inside of the coil box…
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