the pump-headis shown as made close at the top by means of a smilingbox, 0, through which t U From the top of the pump-head extends downwardly and inwardly a tube, E, surrounding the piston-rod, and leaving an air-space, F, between the walls of the pump-head and the tube E.
This constructionis sho with windmills and by hand, as is the pump hereiuabove described. They are not claimedas the invention of said LEONARD H. WHEEL- ER; but
