A and A, Maker of Wooden Clamps in Chicago, IL

This clamp seems to follow the design principles used by Hempe:

Handles made separately, and glued onto screws to form spindles
screws sawn square, without tips to fit into pit of stopped jaw
identical (universal) spindles used in each position
maker's mark applied by branding (pyrography)

Description of Clamps

Whole

Marks

A and A mark, in three lines The Mark is three lines: MADE BY/ A & A MFG CO/ CHICAGO. It is found on the top of the stopped jaw (it clearly wouldn't fit on the end).

Jaws

The through jaw of A and A The jaws are completely symmetric, with slightly rounded edges. The stopped jaw has a pit and a smooth bore hole whose diameters are equal. (This is in contrast to the usual practice of a smaller diameter for the pit.)

Spindles

the handles are identical on A and A clamps the ends are square cut on A and A clamps The spindles are identical, and universal. The handles are made separately, and glued to the threaded shafts. Each handle is cylindrical, with a rounded edge. The shafts are threaded, cut to length, and glued into the handles.

Related Devices

None known.

last revised and validated