. Proceedings of the annual convention . etie. This forces the lifting beam upward, raising the rails. Tie plates can then be removedor inserted as desired. With the pneumatic wheels lowered and the lift pipes extended,it is relatively easy for two men to remove the machine from the track. See Fig. 7. Rod Cutter A hydraulic cutter, which is said to cut reinforcing rods up to Yz-in. in diameterwith ease, has been offered to the railway market. This model weighs 12 lb and is 21 inlong. It is claimed that a pressure of 8500 psi is exerted in the hydraulic cylinder, whichis equivalent to a thrust
. Proceedings of the annual convention . etie. This forces the lifting beam upward, raising the rails. Tie plates can then be removedor inserted as desired. With the pneumatic wheels lowered and the lift pipes extended,it is relatively easy for two men to remove the machine from the track. See Fig. 7. Rod Cutter A hydraulic cutter, which is said to cut reinforcing rods up to Yz-in. in diameterwith ease, has been offered to the railway market. This model weighs 12 lb and is 21 inlong. It is claimed that a pressure of 8500 psi is exerted in the hydraulic cylinder, whichis equivalent to a thrust of 10 tons at the cutter. The tool has a newly designed dual-ratio pump, which combines rapid traverse with high power to minimize cutting time. Rotary Broom A rotary broom has been developed for application to one of the baby bull-dozers reported by this committee last year. As a result the tractor can now be usedfor such jobs as cleaning snow or debris from walks, driveways, platforms, etc. It can 658 Maintenance of Way Work Equipment. Fig. 7—Hydraulic rail lifter. also be used for cleaning the interior of cattle cars where larger tractors cannot bemaneuvered. The rotary broom is attached to the front end of the tractor by special shafts andis driven at speeds ranging from 120 rpm to 200 rpm by an auxiliary 2-hp engine. Thebroom is available with either India-Palm bristles or with wire bristles. Scraper During the year one manufacturer announced the production of two scrapers. (1) One unit has a flat-bottom bowl and stinger blade engineered for loading andfinishing characteristics. The reversible blade cuts a 7-ft 8-in swath; the bottom isdouble with steel-beam fillers. The capacity of the scraper is 9 cu yd heaped. Topextensions or side-boards are available to boost this capacity to cu yd struck, cu yd heaped. Maximum carrying capacity is tons. Also included are suchdesign details as an unobstructed bowl, tapered roller bearings at the axles, inductionhard
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