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Title: |
1902 Article-Cincinnati Milling Machine Co., Holz's Miller (1886) |
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Source: |
Cassier's Magazine Dec 1902 pg 171 |
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Insert Date: |
7/8/2012 9:10:47 PM |
Improvements were made on these early machines from time to time, and about 1886 a machine was brought out by the Cincinnati Milling Machine Company which embodied many important improvements invented by Mr. Frederick Holz, the present president of the company. This machine is shown in Fig. 17. In the design of this machine especial attention was given to provision for accurate adjustment and convenience of manipulation. The adjusting levers were all provided with micrometer dials, which were first used on a miller by Mr. Holz about 1881, and the shaft for elevating was placed at an angle so that the elevating crank and the cross screw handle could be used simultaneously.
These may seem like small and unimportant details, but it will be noticed that they have been almost universally adopted by the builders of this type of miller, and the perfecting of just such details has been the chief factor in the development of the miller and have gained for it the important place, which it occupies to day. Since that time rapid strides have been made in the advancement of milling processes, and radical changes in the design of the machines followed as a consequence. Just as the early machines were the direct outcome of the designers' needs for such a tool, so, we may safely say, the re designing that they have undergone from time to time has been the direct outcome of the needs of the builders and the needs of their customers.
A comparison of the early machines of this type alone with the machines into which they have developed gives one an adequate idea of the growth of milling as a method of metal working. The early Brown miller was smaller than the smallest " universal" miller made today: it did not have a support for the outer end of the cutter arbour, and was intended only for very light work. It has developed into a series of universal millers, the largest of which has a table travel of 33½ inches and weighs approximately 4700 pounds.
The Holz miller of sixteen years ago was about the same size as the smallest plain millers of to-day. It had only six changes in speed for the spindle and only six changes in the rate of feed The range of these speeds and the maximum rate of feed seem to have been considered of very little importance in those days, as they were not mentioned in the catalogues nor in the descriptions of the machines which appeared in the trade journals of the time. |
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Cincinnati Milling Machine Co., Holz's Miller (1886)
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