Bisbee daily review., 1905-04-19

! '~Ni a'~ ~Hf-
 There is now under construction iD
 the Calumet & Hecla blacksmith and
 machine shops. says the Calumet Ga tzette q driii sharpener whose func.
 ;ions and capacity are wonderful in heir completeness. The sharpener lis the invention of Blacksmith Superin- terdent NJ. NJ. Morrison The device lstjll lacks several stages of being com pleted and it will he some time before the experimental sharpener now un- r Ter construction will be ready for prac- ,tical service. But since the completed l'levice consists of four distinct ma chi~es. each one of which can be usei .irHiviaualiv. the sharpener is capable of haing tested in practical oneratior in it's various parts as construction proceeds.
 Ore rart of tho sharpener. known ] IS tha slu+or. or shaper. was described Tn The Mining Gazette about tw,, wears ago. It was in Service ct tho tine and has been rendering service Isi7c7. This machine takes the straight sfeei road and within few moments shanes from it fluted or cross-b;t drill. This drill. however, is in an in icomplete state when so fluted. and at present it is necessary to sharpen lit by hand When the mechanical shsrpener is assembled in it's entirety and performs all of the duties for which it is calculated. the steel will be placed in the machine at one end and the sharpened drill, ready for the miner will be turned out at the other
 Four men will be required to op- crate the drill sharpener. one being stationed at each of the four machines which make up the completed device
 The attendants will not be reor,rei
 .o handle the drill, however. their du.
 oes peing confined to regulating the
 machines and operating the trips and
 waves which cause the device to per
 form it's various duties.
 The drill sharpener under construc.
 ton at the Calumet & Hecla shons
 differs from the other drill sharpeners
 Tn general use throughout the minine
 sections of the United States in thai
 IL mas separate machines for sba-sng
 upsetting, gauging and sharpening
 Where as the various other drill sharn-
 eners have all of the devices for these
 various duties attached to one ma
 chine. The primary advantage that
 tnls gives to the new model is a much
 greater stability and resistance to
 wear and tear. as each of the machines
 connected with the new sharpening
 device is built fully as strong as the
 entire machine of the older tyne in
 which are performed all of the yarI- ious stages of drill shaping and sharp-
 ening. While the speed Of the new device cannot he fully tested until inc completed sharpener is assembled and put into service, it is possible that a speed of something like four drills a minute will be attained by it.
 A unique and very important feature in connection with Mir Morrison S drill sharpeper is the manner in which the actual sharpenng is done By an jingeniously contrived device the blow
 by which the sharpening is done is
 made toward the cutting edge of the . drill bit. whereas in all drill sharpen
 CTS heretofore constructed the blow
 has been away from the cutting edge land toward the wrist or shank of the drill
 Another unicue feature of the new
 drill sharpener is the transfer and
 carrier. The carrier consists of ar endless chain made up of peculiarly de- isig8eu Jrougn-snaped links which travel over driving sprockets. carry
 ing the drill from the initial to the final stage of it's manufacture and fin fishing At each of the four machines which constitute the drill sharpening device there is a transfer. This con lsists of tilting apron about two feet wide and eight feet. long. the length tof the drills which 'are snarpened in machines. This tilting apron is made Iof boiler plate of ordinary thickness. lThe edge of the apron opposite the loperator is provided with an upturned lnange. which forms a trough at that edge of the apron. By a series of jaws and tilting levers the drill is dis charged from the carrier to the trough along the edge of the apron opposite the operator.
 1 A quick light motion on the part of ithe operator opens a valve which ad- limits compressed air to cylinder and ,this actuates a piston rod which tits the apron and rolls the drill from it's position in the trough at one end lacross the apron and into the respec- tive machine of which the operator lis in charge The drill in leaving the lapron and coming into this machine fall into the actual position where the work there is to be performed and it lis only necessary for the operator to Iopen the valve which puts the machine Into operation. About 15 seconds is sufficient to complete the treatment that the drill receives at this machine and another quick shot movement on the part of the operator opens valve which actuates a piston that dis charges the drill back onto another Itilting apron and this in turn delivers lit once more to the carrier which shoots it on to the next machine in line series At the same moment that