US Patent: 1,464,177
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| Die Head
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Patentee:
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| William H. Gates (exact or similar names) - New Haven, New Haven County, CT |
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Patent Dates:
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| Applied: |
Jun. 10, 1921 |
| Granted: |
Aug. 07, 1923 |
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Joel Havens
"Vintage Machinery" entry for Eastern Machine Screw Corp.
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Description: |
| Known as the H & G Die Head.
Claim:
My invention relates to that class of thread cutting tools of the character known in the trade as "die heads," it being an improvement on the patent granted to me November 9, 1920, No. 1,358,074. In my former patent, the die actuating cam, studs were anchored to a shell having a sliding movement over the die carrying head, and the means for holding the die head against rotation comprised a pin anchored in the shank of the die head with its projecting ends intended to have a free movement in elongated slots in the sides of the hollow shank of the overhanging bracket. This arrangement was located so close to the axis of the die head that the grip of the dies on the work would produce such a torsional strain on the pin that the dies would cramp and would not readily let go of the work when the end of the thread was reached. |
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