Panama and the canal in picture and prose .. . DIAGRAM OF LOCK-GATE MACHINERY locks. The stone and sand for the concrete wereobtained, respectively, 20 and 40 miles down theCaribbean coast, and were brought in barges up theold French Canal as closely as possible to the lock. TOWING LOCOMOTIVE CLIMBING TO UPPER LOCK THE MOTIVE POWER OF THE LOCK GATES 185 site, and were unloaded by cableways into largestock piles near the bank. The material, however,was still 3,500 feet away and 60 feet below thecenter of lock construction. This situation causedthe adoption of a central mixing plant near thecent
Panama and the canal in picture and prose .. . DIAGRAM OF LOCK-GATE MACHINERY locks. The stone and sand for the concrete wereobtained, respectively, 20 and 40 miles down theCaribbean coast, and were brought in barges up theold French Canal as closely as possible to the lock. TOWING LOCOMOTIVE CLIMBING TO UPPER LOCK THE MOTIVE POWER OF THE LOCK GATES 185 site, and were unloaded by cableways into largestock piles near the bank. The material, however,was still 3,500 feet away and 60 feet below thecenter of lock construction. This situation causedthe adoption of a central mixing plant near thecentral portion of the locks, consisting of eight 2-yard mixers. An automatic, electric, loop-line rail-road, each car carrying the material for a batch ofconcrete, was installed, passing under the cementshed, under the sand and stone piles; and over themixers. The mixed concrete was delivered to thecableways requiring it by an electric line, the flatcars of which were handled by electric forms were used in constructing the walls ofthe locks. A vital featiure of the locks is, of course, gettingthe water into and out of them, and the method ofoperating the gigantic gates. The former is simpleenough of explanation, though the modus operandiwill be entirel
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Keywords: ., bookauthorabbotwil, bookcentury1900, bookdecade1910, bookyear1913
