Original oil and gas trade magazine vintage ad for BEAUMONT IRON WORKS COMPANY of Beaumont, TX. BIW Blocks build greater drilling efficiency. New, two way bearings on the Type KN and PN Blocks handle both radial and thrust loads as pure right angle loads. This design increases bearing capacity, reduces weight and cuts space requirements, resulting in longer bearing life, reduce maintenance and lower replacement cost. This unique 1953 old oilfield petroleum drilling equipment magazine advertisement would display beautifully matted and framed.