72,038.--HATCH-LINING DRAWINGS.--E.K. Haynes, Hanover, N.H.
I claim a straight-edge or scale having a mechanism for effecting an intermittent movement of the same, substantially as described.
Also in combination therewith the tongue, q, tor angular lining, substantially as described.
Also in combination with the feed mechanism, a mechanism for presenting the straight edge in positions radiating from a center, substantially as set forth.
72,037.--PLATFORM SCALE.--D. Hazzard, Milton, Del.
I claim the Hollow stand, A, the spindle, C, the springs, D, the elastic rod, G, and the graduated plate, H, in combination and arranged substantially as shown and described tor the purposes set forth.
72,038.--PIANO LOCK.--Adam Helmstaedter, Newark, N.J.
I claim the pin, a, secured in the oscillating hook, C, and catching in a slot in the hook, C', substantially as and tor the purpose described.
72,039.--TWEER.--John B. Himberg, Frederick City, Md.
I claim a tweer consisting of the box, A, annular cover, C, with a convex under side, and of the removable ring, E, from which the concave plate, F, is suspended, all made and operating substantially as herein shown and described.