Gear's illustrated catalogue of wood and iron working machinery (1872)
A.S. Gear, Gear, A. S · Boston : Printed at A.S. Gear's printing office, 62 Sudbury Street · leaf 85
II 11* n ac^tf^l^ f ktei|t 0kA CJlkn^p. … This is one of the best and cheapest machines for the purpose in use, and by its use a great amount of labor issaved over other methods of clamping sash. It not only brings up every joint to its place, but makes the sashperfectly square, clamping the four sides all at one operation, the operator…
