le than this is obtained the side motion of the car tensible heel- may produce lateral pressures of from 3,000 to 57,000 portion ar- pounds on the couplers. AN IMPROVED SAW-SHARFENER. ranged to ele- In order to determine the relative positions of two A novel device for sharpening the teeth of saws,… … AN IMPROVED SAW-SHARPENER. interest to prospective inventors of car-couplers we with the heel. The body give them for what they are worth. The essentials of the disk acts as a flex- changing the pitch of the saw-teeth, is the subject of are: First, that the coupler will couple on any prac- ible…
Patents · Automobile · Rubber · Signal · Scientific American · Gas · Signal stations · Forced draft · Horse power · Circuit court · Signal service · Candle power · Rubber tree · Beachy head · Coast signal
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