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Front page of   Scientific American - New York, February 19, 1887

 

We illustrate a special drilling machine made by Francis Berry & Sons, of Sowerby Bridge, England, this machine having been specially arranged, says Engineering, for the use of manufacturers of vertical and horizontal boilers, steam cranes, portable engines, etc.

As will be seen from the engraving, the machine consists of three double-geared radial drilling machines, each with a radius of 4 feet, each radial arm having a steel spindle 2 inches in diameter and a self-acting and hand feed range for a depth of 12 inches. These drills are bolted to a cast iron wall plate 14 feet 6 inches long by 6 feet 3 inches wide, planed perfectly true, and with six T slots, equidistant, planed out, and running from end to end. This plate carries the three drills, and by means of the T slots these drills can be moved into various positions, either vertically or horizontally, within the limits of the plate, to suit the work to be operated upon.

The top driving apparatus is also bolted, to a wall plate with T slots from end to end, so that the driving apparatus can be moved along to suit the varying position of the drills.

 


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