Standard and Nut manufactured by Ingersoll-Rand Co., listed as 157A (circa 1910).

Shell Cap Bolt Lock manufactured by Ingersoll-Rand Co., listed as 265 (circa 1910).

Standard Lock manufactured by Ingersoll-Rand Co., listed as 257 (circa 1910).

Standard and Nut manufactured by Ingersoll-Rand Co., listed as 157 (circa 1910).

Chuck Key manufactured by Ingersoll-Rand Co., listed as 209C (circa 1910).

U-Bolt Nut manufactured by Ingersoll-Rand Co., listed as 149B (circa 1910).

Chuck Key manufactured by Ingersoll-Rand Co., listed as 209B (circa 1910).

Chuck Key manufactured by Ingersoll-Rand Co., listed as 209 (circa 1910).

U-Bolt Nut manufactured by Ingersoll-Rand Co., listed as 149A (circa 1910).

Piston Ring manufactured by Ingersoll-Rand Co., listed as 144 (circa 1910).

Piston Bare (includes 140A) manufactured by Ingersoll-Rand Co., listed as 201 (circa 1910).

Brass Nut manufactured by Ingersoll-Rand Co., listed as 132 (circa 1910).

Extension Bracket manufactured by Ingersoll-Rand Co., listed as 241 (circa 1910).

Air Cylinder Back Head manufactured by Ingersoll-Rand Co., listed as 240 (circa 1910).

Air Cylinder Front Head manufactured by Ingersoll-Rand Co., listed as 239 (circa 1910).

Air Regulator Valve Set manufactured by Ingersoll-Rand Co., listed as 227 (circa 1910).

Air Regulator Valve manufactured by Ingersoll-Rand Co., listed as 226 (circa 1910).

Air Regulator Valve manufactured by Ingersoll-Rand Co., listed as 225 (circa 1910).

Air Regulator manufactured by Ingersoll-Rand Co., listed as 224 (circa 1910).

Air Regulator manufactured by Ingersoll-Rand Co., listed as 223 (circa 1910).