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Title: |
1892 Article-McNaull Machine & Foundry Co.-Radial Drill with Table |
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Source: |
American Machinist, V16, 06 Oct 1892, pg. 7 |
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Insert Date: |
9/20/2020 8:38:25 PM |
We will illustrate herewith a universal radial drill, which has been designed for general machine shop and similar by its builders, the McNaull Machine and Foundry Co., Ronceverte, W. V.
The bed plate of the machine is made deep enough to secure rigidity, provided with three T-slots, and to it is firmly secured the column, which is 10” in diameter, and carries the arm which supports the table in the usual manner.
The upper portion of this column is turned for 20", to form a bearing for the T which revolves upon it, may be clamped in any desired position, and carries at the top the traveling arm, which, as shown, is cylindrical, and can be clamped at both ends of the T. in which it does not revolve, but is traversal back and forth to suit the requirements of tint work by means of the rack and pinion movement shown. Fitted to a flange at the end of this column is a plate which swivels, is graduated, and can be clamped at any desired angle.
This carries the bearings for the spindle, which has the usual sleeve, with automatic and hand feeds and quick return motion.
A vertical shaft driven by bevel gears pauses up through the center of the column, and through a slot in the lower side of the arm, where by bevel gears it drives the horizontal shaft in the arm. The head may be revolved the entire circle. i. e., it can be placed to drill in any desired direction, from vertically upwards to vertically downwards, without stopping the machine and the arm never extends further than is required by the work in hand, and is never in the way of the workman when standing in front of the machine.
The total height of the machine Is 8 feet; it drills to the center of a circle 60'’ diameter and has 20" traverse of spindle. Greatest distance from bed-plate to end of spindle, 45" and from the floor, 50". Spindle is 1¾" diameter, with No. 4 Morse taper socket; cone is for a 2½" belt; floor space required for base 30"x60"; weight, about 3,000 lbs.
US Patent: 472,546
http://www.datamp.org/patents/displayPatent.php?number=472546&typeCode=0 |
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1892 McNaull Machine & Foundry Co.-Radial Drill with Table
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