. The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world. Fig. 5.— Hand-brick Repress. steel, conveniently arranged for refitting when-ever necessary. It weighs about 900 pounds; oc-cupies floor space 20 inches by 3 feet 6 inches,exclusive of the lever, and may be readily movedupon the rollers under the forward end, fromplace to place about the works. Power represses are made with one or twosets of plungers or pressure shafts, and are builtwith a capacity to exert pressures up to 45,000pounds. A ma
. The Americana; a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world. Fig. 5.— Hand-brick Repress. steel, conveniently arranged for refitting when-ever necessary. It weighs about 900 pounds; oc-cupies floor space 20 inches by 3 feet 6 inches,exclusive of the lever, and may be readily movedupon the rollers under the forward end, fromplace to place about the works. Power represses are made with one or twosets of plungers or pressure shafts, and are builtwith a capacity to exert pressures up to 45,000pounds. A machine with two sets of plungersworking against the mold-box, has a repressingcapacity of 15,000 fine front bricks, or 20,000street pavers per Fig. G.— Power Repress. Fig. 6 shows a repress in which a singleplunger acts against the molding die, the pres-sure of the brick being taken on a solid baseinstead of a moving cam or plunger. It is cap-able of being readily adjusted to any thicknessof brick, and the pressure can be regulated bythe hand-wheel on the top of the plunger or shaft. Various kinds of dies can be used, andthese changed with very little loss of time. Ro-man, Norman, or Pompeiian brick can be pressedupon it as well as the smaller sizes, also a greatvariety of ornamental brick, shape brick, andtiles. It has an estimated weight of about ; is equipped with a friction-clutch pulley36 inches diameter, 8-inch face, which in opera-tion runs at the rate of about 80 revolutions perminute, and is capable of turning out about28,000 standard size bricks per day. The dimensions adopted by the NationalBrick Manufacturers Association in the UnitedStates, for standard hard-burnt common build-ing brick, are 834 x
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectencyclo, bookyear1908
