This reamer was in constant use for ten days and gave excellent service. The expanding reamer shown in Fig. 2 is notable for its simplicity of construction. Unlike the majority of expanding ...

EXPANDING REAMER.—The reamer is a tool for enlarging a hole already made in metal or other material, and is in general use among mechanics. J. Greenhalgh, Jr., of Burville, E. I., has invented ...

The drilling reamer's cutter blocks have a balanced ... Specific applications include expanding existing pilot holes, underreaming-while-drilling with rotary steerable assemblies and underreaming ...