US177089A - Improvement in bit-stocks - Google Patents
Improvement in bit-stocks Download PDFInfo
- Publication number
- US177089A US177089A US177089DA US177089A US 177089 A US177089 A US 177089A US 177089D A US177089D A US 177089DA US 177089 A US177089 A US 177089A
- Authority
- US
- United States
- Prior art keywords
- bit
- jaws
- head
- stocks
- improvement
- 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 20
- 210000003414 Extremities Anatomy 0.000 description 2
- 210000002832 Shoulder Anatomy 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 210000001699 lower leg Anatomy 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
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
-
- 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
- Y10T279/17239—Moving-cam actuator
- Y10T279/17247—Threaded cam sleeve
Definitions
- Figure l is a side elevation'rof a bit-stock complete, made on my'plan.
- Figs. 2 and 3 are longitudinal sections of the head'and operating parts, the former showing the tool released and the latter showing it held in place.
- Fig. 4 is an endview.
- I then provide a tubular cap, B, which ig tted to ⁇ screw on the head A, as shown, it having at its outer end, on opposite sides, two lugs, y,onits interior, between which I pivot the clamping-jaws D on pins e, as shown in'Figs. 2 and 3. l'These jaws D are made ot' such a length that, when turned to the position shown in Fig.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Earth Drilling (AREA)
Description
' M. BoYNToN.
BIT-STOCK..
'Patented May 9, 1876.V
UNTTiirD STATES PATENT OFFICE- EBEN M. BOYNTON, OF NEW YORK, N. Y.
vnuPROvt-lwENT INVBlT-sTOcKs. I
Specification forming part of Letters Patent N o. 177,089, dated May 9, 1876; application led v Y February 14, 1876.
` made to clasp thebit or tool, all as hereinaftery more fully described.
Figure lis a side elevation'rof a bit-stock complete, made on my'plan. Figs. 2 and 3 are longitudinal sections of the head'and operating parts, the former showing the tool released and the latter showing it held in place. Fig. 4 is an endview. Y
In constructing a bit-stock 0n my plan I make the body in any ofthe usual styles, and to the end in which the tool is inserted secure a head or socket piece, A, which has a'rect angular taper socket, O, to receive the corre sponding shank or end of the bit I, as shown in Figs. 2 and 3. The end of this head A is extended out beyond. the socket O, and is made circular in cross-section, with its extremity made more or less belhmouthed, as shown in Figs. 2 and 3. I then provide a tubular cap, B, which ig tted to `screw on the head A, as shown, it having at its outer end, on opposite sides, two lugs, y,onits interior, between which I pivot the clamping-jaws D on pins e, as shown in'Figs. 2 and 3. l'These jaws D are made ot' such a length that, when turned to the position shown in Fig. 3, they will grasp between their ends the stem of a bitl I, which may be inserted in the head, their outer and upper portions being made cam-shaped also, so th'at, when turned to a certain extent, they will lock or bear against the outer walls of the cap B, thereby preventing them from turning far enough to permit their loose ends to pass beyond a horizontal line at right angles to the axis of the head. 'Ihe ends of these jaws vD are made concave, or with a notch in them, so that, when crowded against a bit v or tool, they will clasp it and hold it centrally` i between-them.
As shown in Fig. 2, it'will` be seen that the cap B is screwed o" far enough vto permit the- 4 4 jaws D to hang loose without contact. with' .the tubular end of the head-piece A, and when in that position the bit I can be insertedbetween the jaws, as represented in dotted lines,
and seated in the socket O. As the cap B is screwed on, the end of the` tubular vpart C of the head-piece A presses against the inclined outer sides of the jaws D, thereby forcing them inward, and causing their ends to close against and grasp the bit I between them, as represented-in Fig.,3..
To remove the bit it is only necessary .to screw the cap oft' far enough to releasethe jaws D.
It will be seen bits or tools of any'size, from the largest to the Asmallest usuallymade, and that is Very simple and'cheap to make. Y n
I am aware that pivoted jaws `have been arranged in the screw-cap ot' a bit-stock,` as in the patent of C. H. Stockbridge, February 19,
1867 5 nbut in that the jaws are .made long, so f as to hold simply by fitting over the shoulders of the bit, and not by grasping the stem between them, as in my case. I therefore dol not claim the pivoted jaws, broadly but What I do claim is- In combination with the head-piece A, having a socket, O, for receiving'the tool, the short pivoted jaws D, constructed and arranged to grasp the tool between their ends,
substantially as shown and described.
EBEN M. BOYNTON. Witnesses:
P. T. DODGE,
W. O. Donau.`
that by this constructionI produce a bit-stock that willfcenter and hold Y
Publications (1)
Publication Number | Publication Date |
---|---|
US177089A true US177089A (en) | 1876-05-09 |
Family
ID=2246496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US177089D Expired - Lifetime US177089A (en) | Improvement in bit-stocks |
Country Status (1)
Country | Link |
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US (1) | US177089A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040248308A1 (en) * | 1999-02-04 | 2004-12-09 | Toh Cheng Hock | Method and apparatus for predicting the presence of haemostatic dysfunction in a patient sample |
-
0
- US US177089D patent/US177089A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040248308A1 (en) * | 1999-02-04 | 2004-12-09 | Toh Cheng Hock | Method and apparatus for predicting the presence of haemostatic dysfunction in a patient sample |
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