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Title: |
1892 Article - A New Radial Drill |
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Source: |
"Scientific Machinist," Vol. X, No. 9, May 1, 1892, Pg. 11. |
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Insert Date: |
6/14/2020 9:11:13 AM |
The cut on this page represents a new patent radial drill, provided with the very latest improvements, as well as containing all the commendable features that should be embodied in every first-class tool of this character. This machine is built in three sizes, No. 1 plain, No. 2 back gear, No. 3 back gear and power feed. The one shown is No. 1. The machine is driven from cone pulley as shown on the cut, by means of bevel gears, running one to two, the larger of which driving the vertical shaft through inside of column, connecting with the horizontal shaft by means of mitre gears, cut from solid steel. The horizontal shaft is connected by means of bevel gears, running one to two for driving the spindle. By this gearing the spindle is extremely powerful, the cone running four revolutions to one of the spindle. The feed is very simple, yet powerful, with quick return attachment. The column is made in two parts, the upper one being fitted in a stationary stump which supports the table-arms and table. The table revolves all around the column, and can thus be used in any position. The upper column supporting the gibbed arm with spindle head, has full circular movement, depending, however, upon the position of the driving belt. The cone pulley has four speeds, the largest being 12", the smallest 6", all for 3" belt. The machine is thoroughly balanced by weights on side of column, thus enabling the operator to change the position in a moment's time. All lug bolts have lever attached, doing away with all wrenches. The machine is furnished complete with countershaft. The dimensions given below will show at a glance the impossibility of springing the column, even by the heaviest drilling. Square tables with T slots are furnished instead of round tables, if desired.
Diameter of column, 10"; height of column, 6 feet 6"; drills to center of 52"; vertical adjustment of arm on column, 28" ; receives under spindle over base, 4 feet 4" ; receives under spindle over floor, 4 feet 9"; height of table from base, 20" ; size of table, 30"; adjustment of table arm on lower column, 8"; diameter of spindle, 1 9-16" ; spindle bored to fit Morse taper, No. 3 or 4; traverse of spindle, 9"; size of tight and loose pulleys, 12"; speed of countershaft, 360 revolutions; width of belt for cone pulley, 3"; floor space for base, 3x6 feet; weight of machine, about 3,100 pounds. This machine is made by Dietz, Gang & Co., manufacturers of machinists' tools, 56-58 Plum street, Cincinnati, O. |
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