Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 445
ing=Door Sheaves.In many places it is desir-able to have the door slideback into pockets in the partitions. There are on the marketmany devices for trucks, generally good and inexpensive; but theirinstallation and the framing incident thereto are matters ofdelicate workmanship, and if future… … Fig. 61. Transom Fixture for Vertical Pivoting.
Architecture · Building · Carpentry
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