US Patent: 432,529
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| Milling Machine
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Patentee:
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| James Hollingworth (exact or similar names) - Dobcross, York County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 08, 1890 |
| Granted: |
Jul. 22, 1890 |
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Joel Havens
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Description: |
| Herbert W. T. Jenner - patent attorney
Patented in England, 01 May, 1889, #7,236.
My invention has reference to milling-machines employed for cutting metals. In this class of machine the cutter-spindle is carried at one end by a bracket and at the other end by a fixed radial arm cast to the head-stock of the machine; but such fixed radial arm is an impediment when cutting certain forms and shapes of iron-work. To obviate this, and to make the machine adaptable to act upon different shapes and sizes of metal, I propose to make the radial arm so that it can revolve or oscillate in order to alter its position, and to carry out my invention the radial arm and head-stock are now cast separately and held together by bolts. To do this I form a flange either on the head stock or radial arm, such flange having an annular groove formed in it. I also make a corresponding flange on the end of the other part, and by means of T-headed bolts the radial arm and head-stock are fastened together, the annular groove and T headed bars permitting the radial arm to be moved and set, as if upon a pivot, to any required angle, according to the shape of metal being operated upon. |
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