. Railway track and track work . gh about 3 lbs. The Goldie tie-plate, Fig. 21, is6X7£ ins., f-in. thick, weighing about 5 lbs. It has a rib on top, and at eachcorner is a flat chisel-edged or pointed lug which is driven into the tie, cutting 58 TRACK. across the grain. There are other forms of tie-plates in use, all more or lessclosely resembling those above described. Fig. 22 shows the heavy plate adoptedby the Chicago, Rock Island & Pacific Ry., and already mentioned In Europe,tie-plates or base plates are heavier than those generally used in this country,owing partly to the fact that they
. Railway track and track work . gh about 3 lbs. The Goldie tie-plate, Fig. 21, is6X7£ ins., f-in. thick, weighing about 5 lbs. It has a rib on top, and at eachcorner is a flat chisel-edged or pointed lug which is driven into the tie, cutting 58 TRACK. across the grain. There are other forms of tie-plates in use, all more or lessclosely resembling those above described. Fig. 22 shows the heavy plate adoptedby the Chicago, Rock Island & Pacific Ry., and already mentioned In Europe,tie-plates or base plates are heavier than those generally used in this country,owing partly to the fact that they are not self-attaching but are held only by therail spikes, screws or bolts. In the Post tie-plate, Fig. 23, the bottom iseither flat (but with the makers mark in relief) or has small sharp teeth toprevent slipping. It is 8X8J ins., |-in. to f-in. thick under the rail. The outeredge of the rail base bears against a shoulder and is held by a screw spike;the inner edge is held by a clamp and screw spike. The Sandberg plate is. Fig. 24.—Sandbergs Tie-plates. shown in Fig. 24, with three styles of fastenings. It is about 12X18 ins.,J-in. thick, weighing 13 lbs. Wooden Tie-Plates.—These have been extensively and successfully used inFrance for several years. Those of the Eastern Ry. (France) are of hard wood,8 ins. long, 5 ins. wide (the width of rail base) and |-in. thiek. The ties haveseats trimmed to receive the plates, which are held by the pressure of the screwspikes, but this cutting of a recessed seat is not advisable or necessary. Theplates cost about $2 per 1,000 and last from 1 to 1^ years in main track. Whenworn outj the spikes are slackened, the old plate is pushed out, a new oneinserted and the spikes again screwed home. Experiments in this country arealso giving satisfactory results. The object is to prevent the disintegration andcutting of the tie by the rail, and while this has been effectively obtained by thesteel tie-plates, the wooden plates are of course much
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