n this improved pump the piston John Heaison, of New York City, who ha last two years, without interruption, having sides at opposite points. The aperture, d, al- is made to work ina recess or slot let into taken measures to secure a patent for his im- found that they could receive three messages… … screws. and thus make a very narrow space between graph.” | ooo Packing Goods in Boxes, the valve and recess, a similar space is obtain- Fig. 1 isa view of the gauge, and fig. 2 is The great difficulty hitherto attendant on ed above the valve, so that the gradually con- Wire Suspension Bridge. a…
Internet Archive · Public domain. Free to use for anything.
