| All Patents of Type: tapping heads and chucks |
Patents 1 -
15
of 53
      |
| Number | Date | Patentee | Title | Type |
| 558,053 | Apr. 14, 1896 | F.A. Errington | Automatic Tapping Attachment | tapping heads and chucks |
| 558,055 | Apr. 14, 1896 | F.A. Errington | Tapping Attachment | tapping heads and chucks |
| 578,483 | Mar. 09, 1897 | F.A. Errington | Automatic Friction Tapping Attachment | tapping heads and chucks |
| GB-190,123,406 | Jul. 31, 1902 | n. listed | Improvements in Drilling and Tapping Attachments for Use in Connection With Drilling and Like Machines | tapping heads and chucks |
| 873,441 | Dec. 10, 1907 | W.A. Leonard | Reversing tap-holder | tapping heads and chucks |
| 909,749 | Jan. 12, 1909 | I.W. Sprink, F.L. Brown | Adjustable Collapsing Tap | tapping heads and chucks |
| 939,735 | Nov. 09, 1909 | W. Murchey | Thread-cutting tool | tapping heads and chucks |
| 943,009 | Dec. 14, 1909 | J.H. Dorman | Tapping and drilling tool | tapping heads and chucks |
| 943,414 | Dec. 14, 1909 | M.N. Jarvis | Reversing Chuck and Tool Holder | tapping heads and chucks |
| CA-124,683 | Mar. 29, 1910 | W.L. Procunier | Yielding bit and tap chuck | drill press chucks |
| 991,630 | May 09, 1911 | F.P. Miller | Yielding Tapping Attachment | tapping heads and chucks |
| 1,100,984 | Jun. 23, 1914 | W. Murchey | Screw-cutting tap | tapping heads and chucks |
| 1,114,629 | Oct. 20, 1914 | W. Murchey | Device for cutting screw-threads | tapping heads and chucks |
| 1,132,536 | Mar. 16, 1915 | A.J. Prance | Screw-cutting tap | tapping heads and chucks |
| 1,176,812 | Mar. 28, 1916 | J.W. Bradley | Expanding Boring Head and Screwing Head | boring heads |
