US161031A - Improvement in bit-stocks - Google Patents
Improvement in bit-stocks Download PDFInfo
- Publication number
- US161031A US161031A US161031DA US161031A US 161031 A US161031 A US 161031A US 161031D A US161031D A US 161031DA US 161031 A US161031 A US 161031A
- Authority
- US
- United States
- Prior art keywords
- sleeve
- cap
- bit
- screw
- head
- 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
- 230000000875 corresponding Effects 0.000 description 8
- 210000001699 lower leg Anatomy 0.000 description 6
- 230000000576 supplementary Effects 0.000 description 6
- WCGUUGGRBIKTOS-GPOJBZKASA-N (3β)-3-hydroxyurs-12-en-28-oic acid Chemical compound C1C[C@H](O)C(C)(C)[C@@H]2CC[C@@]3(C)[C@]4(C)CC[C@@]5(C(O)=O)CC[C@@H](C)[C@H](C)[C@H]5C4=CC[C@@H]3[C@]21C WCGUUGGRBIKTOS-GPOJBZKASA-N 0.000 description 2
- 241001481760 Erethizon dorsatum Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000036633 rest 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
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/113—Retention by bayonet connection
-
- 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
- Y10T279/17863—Shouldered-tang holding
- Y10T279/17871—Cap
- Y10T279/17881—Screw
Definitions
- the screw-head has a rectangular tapering bore in its end, and fitting upon this head is a screw-sleeve, the end of which sleeve is provided with a supplementary cap having a partial rotation thereon.
- the ends of the sleeve and cap are each provided with openings, which, when the cap is turned in a certain position, correspond, so that the shank of a bit may be inserted within the head, all as hereinafter described.
- Figures 1 and 2 are end views of a bit-stock head which embodies my invention
- Fig. 3 is a central and longitudinal section of the same on line .r x of Fig. 2.
- A designates the screw-head of a bitstock, provided with a rectangular tapering bore, a.
- a screw-sleeve, B the screw thereof corresponding with that of the screwhead A:
- the end of this sleeve B is provided with an opening, 0,'Fig.
- a supplementary cap, C Over the end of the sleeve B -is a supplementary cap, C, which cap has an opening, d,'in its end, said opening corresponding in shape and size to that of the opening c in the sleeve B.
- This cap is secured in place by means of pins c e, Fig. 3, the inner ends of which rest in grooves formed in the sleeve B, and of such length as to limit the rotation of the cap upon the sleeve.
- the operation is as follows: The screwsleeve B is loosened when the openings c d correspond, and the shank of a bit is passed through the openings, and its lower end is inserted in the rectangular tapering bore.
- the cap C is then turned into the position shown in Fig. 2, when it cannot rotate farther upon the sleeve B. In this position theexposed portion of the two openings c d form a complete circle, ⁇ within which the round portion of the bit-shank rests.
- the further movement of the cap C carries the sleeve B with it, screwing it down upon the screw-head until the bitshank is forced firmly into the bore, as shown in Fig. 3.
- the construction of the device is simple and cheap. It is convenient for use, and will hold the bit true and rigidly in place.
- the supplementary rotating cap C in combination with the screw-head A and sleeve B, the cap and sleeve being provided with corresponding openings, all substantially as and for the purpose described.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Revetment (AREA)
Description
UNITED STATES PATENT QEEIGE.
HUBERT C. HART, OF UNIONVILLE, CONNECTICUT.
IMPRovEMENT |N BIT-STocKs.
Specication forming part of Letters Patent No. 16 [,031, dated March 23, 1875; application iled December 23, 1874.
To all whom it may concern:
Be it known that I, HUBERT C. HAE/r, of Unionville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Bit-Stocks, of which the following is a specification:
In my improved bit-holder the screw-head has a rectangular tapering bore in its end, and fitting upon this head is a screw-sleeve, the end of which sleeve is provided with a supplementary cap having a partial rotation thereon. f The ends of the sleeve and cap are each provided with openings, which, when the cap is turned in a certain position, correspond, so that the shank of a bit may be inserted within the head, all as hereinafter described.
In the accompanying drawing, Figures 1 and 2 are end views of a bit-stock head which embodies my invention, and Fig. 3 is a central and longitudinal section of the same on line .r x of Fig. 2.
A designates the screw-head of a bitstock, provided with a rectangular tapering bore, a. Upon this head is a screw-sleeve, B, the screw thereof corresponding with that of the screwhead A: The end of this sleeve B is provided with an opening, 0,'Fig. 3, one side of which is semicircular in form, the circle which forms it being concentric with the sleeve B, and the other sideof-the opening c being rectangular, and of such size as to allow the shank of a bit to pass through it.` Over the end of the sleeve B -is a supplementary cap, C, which cap has an opening, d,'in its end, said opening corresponding in shape and size to that of the opening c in the sleeve B. This cap is secured in place by means of pins c e, Fig. 3, the inner ends of which rest in grooves formed in the sleeve B, and of such length as to limit the rotation of the cap upon the sleeve. These grooves are so arranged that when the cap C is rotated in such a direction as to loosen the screw-sleeve, it will be brought with the openin gs c d corresponding with each other, as shown in Fig. l, after which any further movement of the cap will carry the sleeve with it, and so that when the cap is turned in the. opposite direction the cap will rotate upon the sleeve until it is brought into the position shown in Fig. 2, (the opening c of the sleeve B being designated by broken lines,) after which the further movement of the cap forces the screw-sleeve down upon the screw-head.
The operation is as follows: The screwsleeve B is loosened when the openings c d correspond, and the shank of a bit is passed through the openings, and its lower end is inserted in the rectangular tapering bore. The cap C is then turned into the position shown in Fig. 2, when it cannot rotate farther upon the sleeve B. In this position theexposed portion of the two openings c d form a complete circle, `within which the round portion of the bit-shank rests. The further movement of the cap C carries the sleeve B with it, screwing it down upon the screw-head until the bitshank is forced firmly into the bore, as shown in Fig. 3.
The construction of the device is simple and cheap. It is convenient for use, and will hold the bit true and rigidly in place.
I am aware ofthe patents granted to A. C. Moore, No. 16,931, March 31, 1857, and S. B. Hill, No. 76,632, April 14, 1868, and fully disclaim what is therein shown.
I claim as my invention- The supplementary rotating cap C, in combination with the screw-head A and sleeve B, the cap and sleeve being provided with corresponding openings, all substantially as and for the purpose described.
. HUBERT C. HART. Witnesses:
A. S. UrsoN, W. W. PINNEY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US161031A true US161031A (en) | 1875-03-23 |
Family
ID=2230440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US161031D Expired - Lifetime US161031A (en) | Improvement in bit-stocks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US161031A (en) |
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0
- US US161031D patent/US161031A/en not_active Expired - Lifetime
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