US81260A - davis - Google Patents
davis Download PDFInfo
- Publication number
- US81260A US81260A US81260DA US81260A US 81260 A US81260 A US 81260A US 81260D A US81260D A US 81260DA US 81260 A US81260 A US 81260A
- Authority
- US
- United States
- Prior art keywords
- bit
- pawl
- shank
- sleeve
- ofthe
- 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
- 210000001699 lower leg Anatomy 0.000 description 14
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G3/00—Attaching handles to the implements
- B25G3/02—Socket, tang, or like fixings
- B25G3/12—Locking and securing devices
- B25G3/18—Locking and securing devices comprising catches or pawls
-
- 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
- Y10T279/17761—Side detent
- Y10T279/17769—Pivoted or rotary
- Y10T279/17777—Sleeved
Definitions
- the object 'of thisinvention is to provide a simple and eicient bit-brace.
- G is the ordinary bit-stock or brace.
- My improvements relate to the manner of fastening the bit, for which purpose Iiemplhoy the case or'sleeve C, having a shoulder, c, which ts on the shank D, which is aixed to the partH ofthe brace, by means ofthe reduced end E of the' shank D, fitting in va hole in the part H,'and being keyed therein by a tapering pin or key,d.
- the front end of the shank is enlarged to t the bore of the sleeve, and is formed with a square cavity, to receive the square end A ofthe bit D.
- a pawl, a is pivoted in the lateral mortise-shaped cavity, and opens into the end cavity ofthe shank, being so arranged that the pawl will 'catch in the notch of the b it, as shown, and prevent it from being withdrawn.
- a stud or projection, b, from the pawl passes loosely through a hole in the sleeve C, beingso arranged that when the said sleeve is pushed forward, theedge ofthe hole will encounter the projection b, and caus'e the end ⁇ of the pawl to be raised from the notch in the bit, so that the latter may be withdrawn.
- the sleeve is held back against the part H by the tension ofthe coiled spring, and the opposite edge of the hole from that which acted to raise the pawl will act to depress the end ofthe pawl, and hold it in the notch.
- the coiled spring serves to bear the free end of the pawl in the notch when the brace is being used in boring.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
Description
Si'. W, DAVIS, OF WILMINGTON, DELAWARE.
Lettera Patent No. 81,260, dated August 1 8, 1868.
IMPROVEMENT IN BIT-STOGKS.
@the dgehule referat tu iu tlgeststters @that dat making gaat nf tkt sume.
TO ALL WHOM IT'MAY CONCERN: v
Be it known that I, S. W. DAVIS, of Wilmington, in the county of New Castle,and State of Delaware, have invented a new and improved Bit-Brace, and I do hereby declare that the' following isa full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had t'o the accompanying drawings, forming part of this specificatiomiin whichv The drawing represents a side view of my improved bit-brace, with the bit-holding devices shown in section.
The object 'of thisinvention is to provide a simple and eicient bit-brace.
It consists of the combination of devices herein shown and described.
In the drawings, G is the ordinary bit-stock or brace. t p
My improvements relate to the manner of fastening the bit, for which purpose Iiemplhoy the case or'sleeve C, having a shoulder, c, which ts on the shank D, which is aixed to the partH ofthe brace, by means ofthe reduced end E of the' shank D, fitting in va hole in the part H,'and being keyed therein by a tapering pin or key,d. Y
The sleeve C slides freely on the shank D, against the tensionv of the spring e, coiled around the said shank, as shown. l
The front end of the shank is enlarged to t the bore of the sleeve, and is formed with a square cavity, to receive the square end A ofthe bit D.
I A pawl, a, is pivoted in the lateral mortise-shaped cavity, and opens into the end cavity ofthe shank, being so arranged that the pawl will 'catch in the notch of the b it, as shown, and prevent it from being withdrawn.
A stud or projection, b, from the pawl, passes loosely through a hole in the sleeve C, beingso arranged that when the said sleeve is pushed forward, theedge ofthe hole will encounter the projection b, and caus'e the end `of the pawl to be raised from the notch in the bit, so that the latter may be withdrawn.
The sleeve is held back against the part H by the tension ofthe coiled spring, and the opposite edge of the hole from that which acted to raise the pawl will act to depress the end ofthe pawl, and hold it in the notch.
Thus the coiled spring serves to bear the free end of the pawl in the notch when the brace is being used in boring.
I claim as new, and desire to secure by Letters Patent- The-combinationrof the shank D, and spring e coiled thereon, the movable sleeve C,'pawl a, and projection b, in a bit-stock, H vG, all substantially as shown and described, and for the purpose set forth. The above specification oi' my invention signed by me', this 26th day of June, 1868.
. s. wf DAvIs. Witnesses:
TuoMAs YOUNG, H. Monnow.
Publications (1)
Publication Number | Publication Date |
---|---|
US81260A true US81260A (en) | 1868-08-18 |
Family
ID=2150754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US81260D Expired - Lifetime US81260A (en) | davis |
Country Status (1)
Country | Link |
---|---|
US (1) | US81260A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2639799A (en) * | 1953-05-26 | Pikal | ||
US4900202A (en) * | 1988-09-08 | 1990-02-13 | Wienhold James L | Chuck assembly for tool bits |
US5013194A (en) * | 1988-09-08 | 1991-05-07 | Wienhold James L | Chuck assembly for tool bits |
US5417527A (en) * | 1994-08-12 | 1995-05-23 | Wienhold; James L. | Quick change chuck assembly for tool bits |
US6260857B1 (en) | 1999-01-06 | 2001-07-17 | James L. Wienhold | Quick-change three-jaw drill chuck |
US6457916B2 (en) | 1999-11-15 | 2002-10-01 | Insty-Bit, Inc. | Locking quick-change chuck assembly |
US6561523B1 (en) | 1999-11-18 | 2003-05-13 | James L. Wienhold | Automatic tool-bit holder |
US6588994B2 (en) | 2000-05-17 | 2003-07-08 | James L. Wienhold | Drill bit tail |
-
0
- US US81260D patent/US81260A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2639799A (en) * | 1953-05-26 | Pikal | ||
US4900202A (en) * | 1988-09-08 | 1990-02-13 | Wienhold James L | Chuck assembly for tool bits |
US5013194A (en) * | 1988-09-08 | 1991-05-07 | Wienhold James L | Chuck assembly for tool bits |
US5417527A (en) * | 1994-08-12 | 1995-05-23 | Wienhold; James L. | Quick change chuck assembly for tool bits |
US6260857B1 (en) | 1999-01-06 | 2001-07-17 | James L. Wienhold | Quick-change three-jaw drill chuck |
US6457916B2 (en) | 1999-11-15 | 2002-10-01 | Insty-Bit, Inc. | Locking quick-change chuck assembly |
US6561523B1 (en) | 1999-11-18 | 2003-05-13 | James L. Wienhold | Automatic tool-bit holder |
US6588994B2 (en) | 2000-05-17 | 2003-07-08 | James L. Wienhold | Drill bit tail |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US81260A (en) | davis | |
US78652A (en) | Improvement in braces foe bits | |
US80583A (en) | Isaac allaed | |
US77219A (en) | Improvement in braces for bits | |
US82863A (en) | Necticut | |
US81664A (en) | Island | |
US82644A (en) | Leyerett a | |
US64444A (en) | parsons | |
US74966A (en) | David williamson | |
US100505A (en) | Improvement in sash-bolt | |
US54678A (en) | Improvement in keys | |
US79509A (en) | smith | |
US77522A (en) | Island | |
US81292A (en) | Improved coeksceew | |
US80770A (en) | kussell | |
US71727A (en) | Improvement in bit beaoes | |
US84352A (en) | Improvement in device for holding- doors open | |
US82044A (en) | Improvement in bit-stocks | |
US326297A (en) | Tebeitoey | |
US93807A (en) | Improvement in countersink and bit | |
US91650A (en) | Improvement in self-clearing watch-keys | |
USRE2576E (en) | spoffobd | |
US78020A (en) | Edward c | |
US109493A (en) | Improvement in wrenches | |
US64652A (en) | Gilbert j |