. Cross tie forms and rail fastenings with special reference to treated timbers . 6 shows a dowel with the screw-spike in setting large numbers of dowels electrical machines are a machine is shown in figs. 47 and 50. These machines havefor several years been in use at the treating plant of the FrenchMidi Railway. Fig. 50 shows the work of setting dowels in actualoperation. It is an ex-tremely simple process, andis performed before the tiesare shipped out on theroad. The machine figuredconsists of a small 5-horse-power motor with a flexibleshaft, mounted on fourwheels, th
. Cross tie forms and rail fastenings with special reference to treated timbers . 6 shows a dowel with the screw-spike in setting large numbers of dowels electrical machines are a machine is shown in figs. 47 and 50. These machines havefor several years been in use at the treating plant of the FrenchMidi Railway. Fig. 50 shows the work of setting dowels in actualoperation. It is an ex-tremely simple process, andis performed before the tiesare shipped out on theroad. The machine figuredconsists of a small 5-horse-power motor with a flexibleshaft, mounted on fourwheels, the gauge of whichcan be varied at will. In actual practice a 5-horsepower and a 3-horsepower machine are 5-horsepower machine bores the holes and shapes the screw-thread, and the 3-horsepower machine screws in the dowels and cutsoff the heads. One man can easily manipulate one of these manner of working the machine is evident from fig. 50. Near29221—So. 50—04 5 Fig. 60.—Shaperused to cut thescrew threadin the wood forthe insertion. of the Fig. 61. -Section of tie, showing screw thread ready forthe dowel. 66 CROSS-TIE FORMS AND KAIL FASTENINGS. Bordeaux, in southern France, an average of 2,400 ties per day are pro-vided with six dowels each. With hand tools the German company estimates that one man after briefpractice can provide 15 ties with sixdowels per tie in one day. Since fourmen can work with one set of tools,one man boring the hole, one cutting1the screw thread, one screwing in t hedowels, and one cutting off the top, itis possible to provide 80 to 90 tieswith six dowels each in a day with twosets of hand instruments. From thegreater rapidity with which Ameri-cans work, it will probably he possi-ble t increase this number here.()ne of the greatest advantages ofhe applied to ti( me bv increasing
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectwoodpre, bookyear1904
