the lifting and force pump is at once made cheap simple and remarkably strong and du rable; and being provided with two handles as well as being very strong admits the ap plication of great force thus rendering it a very powerful forcing pump. AIR-COOLING APPARATUS. Figure 3. Figure 4. Figure 2. INtVWV \VSMV OVUV a rSIF 1853 SCIENTIFIC AMERICIAN INC, scientific american, 1853-06-04

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the lifting and force pump is at once made cheap simple and remarkably strong and du rable; and being provided with two handles as well as being very strong admits the ap plication of great force thus rendering it a very powerful forcing pump. AIR-COOLING APPARATUS. Figure 3. Figure 4. Figure 2. INtVWV \VSMV OVUV a rSIF 1853 SCIENTIFIC AMERICIAN INC, scientific american, 1853-06-04

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