Blocking Presses

Fig. 213. Blocking press at E. I. du Pont de Nemours and Co. factory, according...

In making glass blocks, molien glass is extruded in gobs" that are poured into an open half-block mold. A plunger, which crcaies the pattern on the inner surface of the block, presses the glass into the mold to produce... 

The United States methods of solvent recovery and drying of single-base propellants are described in detail in Ref 2, pp 26-32. These operations are conducted with proplnts in the shape of final grains. Prior to this, the colloided mass of proplnt is subjected, in sequence, to action of a preliminary blocking press, a macaroni press, final blocking press, graining and cutting opns (Ref 2, pp 23"25)... 

H diameter fitted into a handle b and some pieces of Afong light paper 2H Kiuare a. Take a piece of paper in one hand and with the nipple in the other, press the paper around it so as to fopn a little cup which is now inserted in the Ko y in block pressing down until the... 

Fisher s engineering innovations include the following devices (1) a building-block press (2) an oil-seed press and (3) a micro-irrigation pump. Let us look briefly at each. 

Building-block press. KickStart s building-block press does not sound radically innovative, but in one sense it is. It uses only soil, a local natural resource to which rural farmers have access in abundance, and a bit of cement, something that costs only a little money to obtain. Using the manually operated Money Maker Block Press, four workers can produce 500 rock-hard blocks a day, compacting a soil/cement mixture under high mechaiucal pressure. The press can be adjusted to work with various types of soil and one bag of cement yields over 100 bricks. The maker can sell the blocks at a profit and buyers can build walls at half the cost of ones made with concrete blocks or stone." " ... 

Block press n. (1) A press used to agglomerate laminate squares under heat. The squares, which have been cut from laminated sheet, are crossed to combat the anisotropy that normally occurs during laminating. (2) A press used to mold very large blocks of polystyrene foam. 

Fq = face area of dummy-block pressing on billet, cp — = extrusion ratio,... 

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