BOILER FLUE CLEANER. CLAMP FOR ROOF SCAFFOLDS ETC. BARLOW'S CLAMP FOR ROOF SCAFFOLDS ETC. Crushing Limit of Columns. h = MATERIAL. Decay of Neglected Bridges. Brick Walls. 4 -40. PORTABLE SASH SECURER. BETTERMANN'S PORTABLE SASH SECURER. AN EASILY OPERATED WASHING MACHINE. ROGERS' IMPROVED WASHING MACHINE. FERGUSON'S BOILER FLUE CLEANER., scientific american, 1885-12-05

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BOILER FLUE CLEANER. CLAMP FOR ROOF SCAFFOLDS ETC. BARLOW'S CLAMP FOR ROOF SCAFFOLDS ETC. Crushing Limit of Columns. h = MATERIAL. Decay of Neglected Bridges. Brick Walls. 4 -40. PORTABLE SASH SECURER. BETTERMANN'S PORTABLE SASH SECURER. AN EASILY OPERATED WASHING MACHINE. ROGERS' IMPROVED WASHING MACHINE. FERGUSON'S BOILER FLUE CLEANER., scientific american, 1885-12-05

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