Original oil and gas trade magazine vintage ad for CHAIN BELT COMPANY of Milwaukee, WI. Baldwin Rex Assembly Riveted Roller Chains. There's nothing to it. When it comes to coupling, uncoupling or repair either at the rig or in the supply store, it is your time-saving, money-saving answer. This unique 1953 old oilfield petroleum drilling and pumping equipment magazine advertisement would display beautifully matted and framed.