US149306A - Improvement in bit-stocks - Google Patents
Improvement in bit-stocks Download PDFInfo
- Publication number
- US149306A US149306A US149306DA US149306A US 149306 A US149306 A US 149306A US 149306D A US149306D A US 149306DA US 149306 A US149306 A US 149306A
- Authority
- US
- United States
- Prior art keywords
- bit
- jaws
- stocks
- improvement
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000001847 Jaw Anatomy 0.000 description 16
- 210000001699 lower leg Anatomy 0.000 description 4
- 210000000887 Face Anatomy 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/008—Chucks; Expansion mandrels; Adaptations thereof for remote control with arrangements for transmitting torque
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17231—Pivoted jaws
- Y10T279/17264—Fixed cam and moving jaws
- Y10T279/17273—Axial screw actuator
Definitions
- Figure 1 is a view of the whole bit-stock.
- Fig. 2 is a .view of the clamp or chuck in central vertical section.
- Fig. 3 is a view of the mouth of the chuck.
- the invention consists in a combination of parts whereby the bit is securely clamped in the stock and readily detached therefrom.
- the letter (0 indicates the main part or body of the bit-stock; a, the button on the upper end of the same.
- the chuck-shell b To the lower end of the part a is attached the chuck-shell b, into the upper end of which runs the thumb-screw c, the screw-thread on its lower end taking into the nut d, to which are pivoted the jaws e e, which are fitted on their opposing faces to grasp and hold the shank of an auger-bit.
- the spring f serves to press the nut and the jaws constantly downward and outward.
- the jaws are held from turning in the shell Z) by the pin 0 projecting from one of the jaws into the mortise b in the shell.
- the mouth of the shell at g is made with a flare, and the jaws have a corresponding swell, so that as the jaws are moved inward by means of the thumbscrew they will be pressed together, and when moved outward, the jaws are permitted to open, being pressed apart by the spring It.
- the shank of the bit is introduced between the jaws while they are opened, and then, by
Description
UNITED STATES PATENT 'CFFIGE HUBERT C. HART, OF UNIONVILLE, CONNECTICUT.
IMPROVEMENT IN BIT-STOCKS.
Specification forming part of Letters Patent No. 149,306, dated April '7, 1874; application filed Feburary 27, 1874.
To all whom it may concern:
Be it known that I, HUBERT C. HART, of Unionville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Bit-Stocks, of which the followingis a specification, reference being had to the accompanying drawings, where Figure 1 is a view of the whole bit-stock. Fig. 2 is a .view of the clamp or chuck in central vertical section. Fig. 3 is a view of the mouth of the chuck.
The invention consists in a combination of parts whereby the bit is securely clamped in the stock and readily detached therefrom.
The letter (0 indicates the main part or body of the bit-stock; a, the button on the upper end of the same. To the lower end of the part a is attached the chuck-shell b, into the upper end of which runs the thumb-screw c, the screw-thread on its lower end taking into the nut d, to which are pivoted the jaws e e, which are fitted on their opposing faces to grasp and hold the shank of an auger-bit. The spring f serves to press the nut and the jaws constantly downward and outward. The jaws are held from turning in the shell Z) by the pin 0 projecting from one of the jaws into the mortise b in the shell. The mouth of the shell at g is made with a flare, and the jaws have a corresponding swell, so that as the jaws are moved inward by means of the thumbscrew they will be pressed together, and when moved outward, the jaws are permitted to open, being pressed apart by the spring It. The shank of the bit is introduced between the jaws while they are opened, and then, by
means of the thumb-screw, the hold of thec. HART.
\Vitnesses:
WM. E. SIMoNDs, I S. J. SIMoNDs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US149306A true US149306A (en) | 1874-04-07 |
Family
ID=2218719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US149306D Expired - Lifetime US149306A (en) | Improvement in bit-stocks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US149306A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050010382A1 (en) * | 2000-10-11 | 2005-01-13 | Oliver Stuart R. | Methods for evaluating and improving drilling operations |
-
0
- US US149306D patent/US149306A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050010382A1 (en) * | 2000-10-11 | 2005-01-13 | Oliver Stuart R. | Methods for evaluating and improving drilling operations |
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