Show THE GREEN HARD ROCK DRILL A hand drill the invention of W H green of colorado springs colorado is being exhibited at the quigley automobile es exchange place salt lake this is a hand rock drill that appears to be of perfect construction most effective and which certainly can be most easily and economically operated the machine weighs pounds and its good points are enumerated as follows automatic feed rotates drill while striking strikes blows per minute with a ten and one half pound hammer and drills four inches per minute in soft rock and one half inch per minute in bastard granite it has a water feed that flushes the drill hole when necessary through throng h the drill steel it is mounted upon an ordinary column and drives a hole by ordinary clamps of about twenty eight t inches although there are no limitations its usefulness being regulated by the length of the steel used it is as easily operated as a hand forge the handle is reversible for right or lefthand left hand band operation and it can be used in any position it is stated that over of these machines are in successful operation in co is so orado mining camps the machine avith w constructed that it can be connected a one fourth horsepower motor and opera ed electrically it is well adapted for use is no in small mines where electric power the e de obtainable and by prospectors in of their claims the machine is being introduced by and ar a R green a son of the inventor our 0 of range ments may be made with some conle gand 21 handling handlin local machinery houses for its sale |