Show THE BULLOCK DIAMOND DRILLS the them M C bullock manufacturing company of ti chicago cago have recently published a catalogue descriptive of the diamond drill which is of unusual interest and value to any one interested in prospecting it opens with an exact likeness of the late AT C bullock founder of the company and a sketch of his life he was the Fat father fier of the diamond FIGURE 1 drill drair as used for prospecting purposes he drilled the first deep hole with the diamond drill he drilled the deepest hole ever drilled in america with the diamond drill he removed the largest core ever removed with the diamond drill he designed upwards of fifteen different styles and sizes of diamond drills owing to the general interest in prospecting now prevalent our readers will be interested in the following description of some of these drills FIGURE 2 lit FIGURE 3 figure no 1 illustrates the bravo drill the smallest drill manufactured by this company it is designed designed to be operated by either hand power or horse power it is light of structure and can be separated into packages none of which weigh more than forty pounds so as to be easy of transportation to almost inaccessible places this drill can be oper RI FIGURE 4 abed by two men and in ordinary formations of the grade of hardness of limestone will bore twenty feet a day it is an inexpensive machine and is manufactured and sold in great numbers it is not necessary to be an expert to operate this drill but anyone with fairly good mechanical insight can operate it successfully by following the instructions furnished with the drill 05 5 FIGURE 5 ft 0 the badger and beacon drills which come next in capacity are arranged for either underground or surface work when surface mounting is used the general appearance is that of the bravo the drills being mounted on foundation timbers with back braces but these drills are larger and stronger than the bravo figure 2 shows the general appearance of these drills when used for underground round work FIGURE 6 FIGURE 7 the beauty drill the next larger size can also be used the same way figure 3 shows the beauty drill with surface mounting this drill has two cylinders of the trunk type set at right angles to each other and the parts are so evenly balanced that the drill can be run at a very high speed without vibration this thia drill is very compact and durable As proof of this there are beauty drills running now which have been in use for more than sixteen years figure 4 illustrates the next larger size of drill the champion which is the pioneer drill of the lake superior iron and copper country this drill has a capacity of 1500 feet and for general work up to this jill J FIGURE 11 P FIGURE 9 depth is the stand ard drill it was also the pioneer drill of south af africa ri being the ithe first diamond drill imported by the south african republic or transvaal figure 5 illustrates the detector drill this has a capacity of 2500 feet the engines are I 1 it I 1 FIGURES NO 10 double cylinder crosshead and connecting rod pattern the system of gearing is such that the drill rods can be handled in a deep hole without the use of a counter bal ance many of these drills have gone crones to south africa and many are to be found in ii the united states canada and mexico the favorite giant and jumbo drills are ar the larger sizes varying in capacity from feet to feet there is not budh muc demand for drills of this capacity in america but south africa has furnished the principe principal field for this depth of work these drills are made with two types of feed the screw feed and the hy hydraulic feed with the former type of feed is used a patent thrust indicator which shows the instant the drill passes from one stratum to another anoff ier thus the drill furnishes an absolutely correct record of all the strata pene deven where it is impossible to get a core it also locates exactly all gauges s soft 0 f t formations and crevices an item ve very ry important in prospecting 56 44 for the precious metals and soft iron brae ore the hydraulic feed is of mw the double cylinder 0 type as they 7 no longer make the old single cylinder type of feed this improved type of hydraulic 1 fee feed allows dallows for a long run to the spind spindle ld so that i it ft is not necessary to feed back backa so of the double cylinder feature tends to keep the drill rods in more perfect balance than is possible with the old single fingl cylinder type on all of these drills the hinged F swivel head is used wh which ich permits of placing the drill rigidly upon its foundations when FIGURE 12 starting the hole and not moving it until the tl hole is ig completed the swivel head being i in locked and swung back out of the way of the tl hole when hoisting or howerin lowering g the rods thus th an exact alignment of the drill with the hole ho is preserved preserve d the catalogue contains an interesting chapter on boring tools figure 6 represents a bit set with diamonds figure 7 7 represents a core lifter ring figure 8 represents ants a fishing tap for removing broken drill rods from the hole figure 9 represents a harpoon casing puller a very ingenious and useful tool while figure 10 represents tb the e different styles of bits used for going through clay gravel boulders etc figure 11 represents a spirally grooved core barrel this is ten feet long and has a spiral groove running its entire length the purpose of this groove is to allow for the return flow of the water this permits of making the core barrel the exact diameter ef the hole thus keeping the he hole straight and true and preventing vibration of the core barrel thus avoiding breaking up the core a fault common with wilh core barrels made without this spiral groove there is also a useful chapter on operating diamond drills this will be of value to any diamond drill operator the general arrangement ran gement of the drill boiler anu and pump are given with directions for setting up and drilling also of the arrangement of drive pipe and casing figure 12 gives a clear sectional view of a diamond drill hole the stand pipe to bed rock the casing properly inserted and the regular boring tools being used to continue the hole through the hard measures the catalogue gives full instructions for setting the diamonds in the bit these are sufficient to enable adv any good mechanic to do this work successfully with a little practice the catalogue contains a chapter regarding the cost of diamond drilling opp operations rations which will enable one to form a fairly accurate idea of the expense of prospect prospecting ilig |