GB Patent: GB-190,505,725
|
| An Improved Tapping and Drilling Chuck
|
|
Patentee:
|
|
| James H. Melloy (exact or similar names) - Manchester, Lancaster County, England |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Mar. 18, 1905 |
| Granted: |
Nov. 02, 1905 |
Espacenet patent
Report data errors or omissions to steward
Joel Havens
"Vintage Machinery" entry for William Muir & Co.
|
|
Description: |
| Note: Early English patents were not originally numbered but they were later assigned consecutive numbers that run from GB-#1 of 1617 to #14359 of September 1852. From Oct 1852 until 1916, patents were numbered by the year and started at patent #1 at the start of each year in January. The patent number used in DATAMP represents the year of issue and the patent number. This patent is #5,725 issued in the year 1905.
H. B. Barlow & Gillett, Chartered Patent Agents
Abstract:
A friction drive allows slip to occur and prevents damage to the tool. The shank a is centrally enlarged and has an inclined hole which receives a two-part spring wedge bolt b abutting against an eccentric ring h rotatably mounted on the shank. A socket e is retained on the shank by a plate f and is provided with a bush j for the tool, which may be secured by a catch k. A pointer i moves over a scale on the ring h graduated for different diameters of tools. Rotation of the ring h thrusts the wedge bolt between the ends of a spring ring, which provides a friction drive for the socket. When a tap reaches the bottom of a hole, the spring ring will slip.
|
|
