must be of small importance that does not employ it. Mr. shaft there is a bevel pinion that gears with a wheel which medium of two straight pinions, p, which gear with the Couvreux, who has made use of it in all his undertakings is keyed upon a vertical shaft that actuates the bucket chain. loose… … cab. This chute is sufficiently wide to re- the type of excavator under consideration is Fig. 1.-ELEVATION-EXCAVATOR WORKING IN A TRENCH. ceive the earth when the apparatus, with its not adapted for working according to this hopper, is pivoting around its axis, provided, method, Mr. Couvreux has…
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