This illustration dates to the 1870s and shows Whitworth's drilling machine. Sir Joseph Whitworth (1803-1887) was an English engineer, entrepreneur, inventor and philanthropist.[2] In 1841, he devised the British Standard Whitworth system. Although he did not take on large developments such as railways and steamships, he produced the machine tools, which made these developments possible. Shown here is one of the drilling machines he devised for drilling holes in metal. A is the strong framing, which is cast in a single piece, in order to render it as rigid as possible. The power is applied by
This illustration dates to the 1870s and shows Whitworth's drilling machine. Sir Joseph Whitworth (1803-1887) was an English engineer, entrepreneur, inventor and philanthropist.[2] In 1841, he devised the British Standard Whitworth system. Although he did not take on large developments such as railways and steamships, he produced the machine tools, which made these developments possible. Shown here is one of the drilling machines he devised for drilling holes in metal. A is the strong framing, which is cast in a single piece, in order to render it as rigid as possible. The power is applied by means of a strap round the speed pulley, B, by which a regulated speed is communicated to the bevel wheel, C, which drives D, and thus causes the rotation of the hollow shaft, E. In the lower part of the latter is the spindle which carries the drilling tool, F, and upon this spindle is a longitudinal groove, into which fits a projection on the inside of E. The spindle is thus forced to rotate, and is at the same time capable of moving up and down. The top of the spindle is attached to the lower end of the rack, G, by a joint which allows the spindle to rotate freely without being followed in its rotation by the rack, although the latter communicates all its vertical movements to the spindle, as if the two formed one piece. The teeth of the rack are engaged by a pinion, which carries on its axis the wheel H, turned by an endless screw on the shaft, I, which derives its motion by means of another wheel and endless screw from the shaft, K. The latter is driven by a strap passing over the speed pulleys, L and M, and thus the speed of the shaft K can be modified as required by passing the strap from one pair of pulleys to 91another. The result is that the rack is depressed by a slow movement, which advances the drill in the work, or, as it is technically termed, gives the feed to the drill. By a simple piece of mechanism at N the connection of the shafts K and I can be broken, and
Size: 4010px × 4470px
Photo credit: © Ivy Close Images / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: 1800s, 1870s, 19th, british, century, drill, drilling, holes, industrial, joseph, machine, metal, revolution, sir, standard, system, tools, whitworth
