Show An YOL to chinery tion that and value largely manifested risk has which labor been not as is care machinery in tested other a of subject The however has rock machinery drilling considerable perience ceedingly a with of many others interested in the tunnel projects in Little the For ers of benefit pneumatic or class of the jar of the nuts screws in the tute of of Wood been in chine tho 1) practical requirements successful rock culties of borer to a inven the obviate to incident hitherto his in and endeavored has tion to necessary this E which it he ex and does ho if remain forward until added take these his or mounted on shown in Some for elas inserted inserted diill the so be when other it rock and over adapt the or is tripod it col a seven feet which points and embodied ity combined livery of ho ute limestone of ho months of twelve A will 120 pounds self end ono at the is not wide the which to be being tear cipal in the tured effective trial recent weighing only this tripod ‘worked it he thinks be prefer slight a all like drill is Engineering 7th that One of most the gear to secure forward end of back movement pounds although would steel striking tho valve just is breakage until the blow the full force the blow the length turning be shortened the at it steam set k is and the turns ture is stem cylinder ward head should remain if the the strike is steam chine In off head Notwithstanding motion the of that if cate so there are the feed —a thing which this machine tho valve The a of rotation the rotation-box directly upon simple to give B the in its it slight breakage it the is backed with is that stock the weak prices for is re week the 1871: has excessively been made movement week last however firm while laid down equally is C dull lead Western good at G(5 at gold 1-lficts G£(??Gcts at ' 21(?'cts copper currency advancing is “L & English gold Foreign gold refined and Straits gold 23 gold GSO? 712J G90(77 abroad rapidly 22cts F” Do currency It and and continuation is in on been lias have in of Mr of Little interrupted of tho Morton’s Cotton week this from ready by Three tho to engraver which hope we ensuing in his sections our articles tho of non-arrival Alta prepared Gorman John a in of its thus order prevent block geology tho ac to week deli performed a and report held company ma peculiari is rod elasticity light 18th gold now are the in contained which operates piston is consequenco manuscript will is construction state England the ho wood L and about to Market are artielo will unnecessary will continue drill currency April until is which click single have 8c competing prices Lead Thk in Wood’s motion by manufac and was during and piston not irregularities — Tho Spelter rock-drills valve and Our mestic for it once these the we About arrived ending fea far the breaks it stagnant so figures operator repeatedly until or not we east coming sold there 25cts run itself the mo lead still since so and tons bullion following Tin here of when too most other lead been present the thousand even The firm rarely higher Cc to western from Lake properly strike shank-breaks cut is head duced tho head no stops the are Foreign be is start driven to week lead at were present price hold of complete the it end interesting machine forward the is tending there drill strike ties piston tons for the holders pretty has two up the hand trade turers the may the start Another tho if of rear valve not G20 all gold turning to they on have can suffici end has it and fi large market advanced If GJcts may machine ready the on if does it the it always t if As with exceeding no Stocks By it the or one tho ward ad stroke the the speed is for adjustment hen w is by at stop This any center if will it instantly ning at at somo two advices The severe shorter stroke Similarly tons manufacturers to of over dull a days ten 500 or up more Slip nearly struck is turning by light not of reversed securing eased the btopped be stroke stroke made machine blow a stock Advices producing which re the and may left the of of cause motor machines right-handed of part any in 1871 Metal past took which total the the operated produced by stem A Figure I the it drill bo The forward without thereby the at 100 not measure such cases a In it ently the before in would stroke justing is gold the other struck is valve is in the sold left of havo arrest chief Bulling for purchase thus and should is upon the those cushioned blow who are the this It valve of In verse the blow lead at rock In part main so 11th Caswell A and fie outsido have valve operated piston A removes The the is Market Lead April 1 been This ment and shock this of the requirements the the under of drills to March head least hence and of rear the without it Journal stroke of pounds York is in upon the Market active has at gold described essential blow a Lead Maiket qnite mostly follows: as 625 size inch steam drilling machine Tho valve should be a as reprint we of Mining and No Lead domestic weight or well so exclusive pounds that us used The ma The woik latter ending office been has manufac 115 additional where inch five heavy Edward by control able block and tho for inch about for making quarries and holes New the week tho for Our witch’ a 2£ tripoel in and York of Broker smallest and inch four chines are intended 375 former weighs and tho the tripod results prin writes his work and the are Wood of six tho tho intended is gadding New has wear as drill Professor and a of do including and htoneyards holes factor sizes been for de experience appreciated duly Several at most the has good culled weigh lieportod shown he will holes Tho min per woik drill smaller Iteview blow of variety plug-and-feathcr uneven at drill was Truesdell’s promises machine drill tho rate trial a Mr it 11 the machines that states great a at or where these hole men This for In quarry ono Mr n dulled was minutes 2 in J diameter in sandstone in portabil and speed that with tho the at N considered has strength are ed tho machinery The of favor granite Newark In per minute tho samo size hole twtlve inches rate of This pipe class new and kind under Quincy in in mine heading this to drilling of inches used to of yard inches deep inches of 4 Pittsburgh using jack-screw tho When six at pounds steel adapted rate block a was it being clamp to as For in Figure shown in machino a features l'ock 1 is not hollow of adjustablo the into and loosely novel wedges may made fed does one other actual operation as in drifting in an iron is In Church’s can mines 190 weighs inoh-and-nn-eighth Its and machine in drifting on or especially fast feed an adjustable the cut ‘2 the into conical tho is ox screws The drill it stop operator tho as umn whichusedshows ma automa seized The For this In no device are as time a slight was is devices as distance proper three The so is able circumstances almost incredible considering the capacity of tho machine properly the the and col moving rapid is turn down tho work rapidly will is r it inch made holes end of upper dulling hole a which drill carries of tho at aftt aeiies a 35 crank crank is with inch and machine clamping the ma lock will und umn and he tho automatic choice interfere slow not it that so the bo used may by beginning turn cutting drill An the as turn the with it the concus the loosens keys and thus the strikes may and If tho if turn enough all has is but woik the 0 inserted diffi slowly ex far cutting to obliged outside tool between as and hard the to parts and chuck be and F peirait the in loose the about space is will an arrange only to has crank blow' there ticity shank the is to this By the Attempts fasten successful which bolts J understands fully Wood Insti N Hoboken Technology Professor Stevens’ the it but due drill tically Yolson l)e to rod the have read our made sion lets steam new by Professor a invented drill gigantic Cottonwood herewith illustrate we rather this and owners that often as chine coupling with keys the inserted into screws set side but difficult been have rod shown has attach to piston it disen peimits operator upon it place and feed tho ment At seem click gages udvauce drill Utah of NO proper tho press rod its beyond fastened Interests 1874 25 the will is matter APRIL UTAH steam a it tool CITY valve-gear rotation the to cases large our If good a the simple a for interest mine of has LAKE Material other during firm is stroke sure union places and Commercial and Mining the rotated to the securely piston it thought first would be not persons ing sav fully and tool few ns in money working drill contained in during is forward provided depaitfroni to the rock of prove Territory our of is demonstra Mill disposition methods orthodox and In ma Utah in machinery the elsewhere saving labor time rubber which It is box B back stroke MACHINE mining of such service of facilitate question a to DRILUNC ROCK the to SALT introduction only Devoted I WOOD'S Tlie Journal Illustrated of suddenly and the stops the wedges the and hold easily and quickly the wedges back The feed shown advance seize feed Mechanics of ‘chuck’ drill loosened in the often the cut say by is that feed piston fotward diill The unci is driving a a hand hand Steam Patent not is taken as feed tomatic if the Pneumatic or true but feed and in has efficient this a bnt whm the a as when piston au mis the on which cut) it Miller after returned regulator click the the Drillers an are positive there is In this machine in back head (not seen advance teed prevents an bearing they Reck formerly Mining is in advances column shown column A thvee-inch cases in a a single stoping four-inch Luiizontal In placed column or by figuie be may clined ried the placed bo may in thus many cases vertically or constructed diill can bo as Mining Arizona tho is tho of he an best Superintendent Co’s Furnaces extended trip districts mining country ‘ to in fora ever New is Yoik shipping has the it says move out visited’ car Tbeie aro man many in which long column a lie to District bullion on to Sun the Colorado Bernardino |