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Title: |
1891 Article-C. H. Bauch & Sons, 36 inch Radial Drill |
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Source: |
American Machinist, V14, 12 Mar 1891, pg. 7 |
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Insert Date: |
6/27/2016 7:32:37 PM |
The accompanying engraving shows an improved post radial drill built by C. H. Baush & Sons, Holyoke, Mass.
As will be seen, the machine consists essentially of a heavy bed plate to which an upright is attached, a saddle being fitted to the face of this upright upon flat bearing surfaces at right angles to each other, and fitted with gibs. In the middle of the face of the column is a rack, connected with which is the worm gearing by which the saddle is moved up or down upon the arm. To this saddle is pivoted the arm upon which the drill head moves in the ordinary manner. The method of driving will be understood from an inspection of the engraving, and it will be noticed that the back gearing is located at the spindle, so that there is the least possible trouble from severe torsional stress.
All movements of the spindle, head, and arm arc convenient to the operator ; the spindle is balanced as shown, so that the weight which balances it moves in line with the spindle and preserves a uniform balance; the arm and the head may be readily clamped in position when desired; there is a quick return to the spindle, and all feeds are positive, there being interlocking clutches, as shown, which are engaged by means of the star wheels, and when released are held apart by spiral springs.
The bed-plate of the machine is 7' 6” x 2' 7" and 5¼" deep: extreme height of machine, 10 feet; greatest distance from end of spindle to bed-plate, 5' 3" ; drills to the center of a circle 6' 4" diameter. The driving belt on the countershaft is 4" wide, and that on the machine itself, 3½"; the shipping weight, 5,000 pounds. |
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1891 C. H. Bauch & Sons, 36 inch Radial Drill
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