US75870A - daboll - Google Patents
daboll Download PDFInfo
- Publication number
- US75870A US75870A US75870DA US75870A US 75870 A US75870 A US 75870A US 75870D A US75870D A US 75870DA US 75870 A US75870 A US 75870A
- Authority
- US
- United States
- Prior art keywords
- nut
- clamps
- brace
- bit
- jaws
- 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 12
- 210000001699 lower leg Anatomy 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 241000283986 Lepus Species 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
- B23B31/02—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
- This 'invention relates to the manner in which the bit is fastened and held in the brace; and it consists in a tubular female screw or nut, et' novel formation, and in two, or more jaws or clamps, which are operated by tho nut, whereby thc bit is firmly' secured in the brace, and easily detached therefrom, as will hereinafter be described.
- Figure 1 represents tho end ofthe brace with the nut oi',l in order'to show to better advantage the form of the clamp.
- Figure 2. is a section of the fasteningend of the brace, wi-th the shank of an auger-bit-fastened according' to my invention.
- Figure 3 is a View of tho outer ends of the clamps.
- A represents apart-ion of the brace, it being the fastening-end; B is the tubular nut; C represents the clamps; D is the auger-bit.
- the end of the brace isi-formed with an'oriec sufficiently large-to admit thc end of any ordinary anger er other bit; .and the clamps C are so attached that they have suiiicient play or open suilieiently wide to efhcloseand hold the largest 4size of auger-bits, as well as' the smallest pod or gimlet-bit.
- fig. 1 a side view of one of the clamps is seen.
- the inncnend is in a T-form, and is'Sunken into thc brace, so that its'baclc or outer surface is flush with the brace, or so that it may heforeed inward from the surface ofthe brace (as would be necessary in holding a very small bit) as far as theende' ⁇ the brace or the line marked a.
- This T-end is simply dropped inte the recess prepared for it, when it .is held bythe nut B, as seen in fig. 2.
- the peculiar shape of the-outer portions of 'these clamps will also be noticed inthe same figure:
- the portion b of the T-end acts as a hinge upon which theclamp works.
- the nut B is flaring at its outer end, as seen in the drawing, so that when it is screwed or turned up towards the clamp, it strik-es the inclined surfaces of the clamps, and forces them together or towards eachother.
- the clamps are cut out on their inner sides, so that they admit the enlarged or angular portion offthe shank of Ath'e bit, but close up upon the bit, as seen, when forced in by the nut.
- the stock A when provided with the-T-slot, adapted to receive the T-,shank of the jaws C, in con'ibinntion with the nut B, whose screw-thread is nbojvc thejaws, as herein described, for the purpose specified.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
Description
aan;
CHARLES M. DABCLL, CF NEW LCNDCMCCNNECTICU", AssIeNCn TC 'IIIIiA WILSON IvIANUFACTURING COMPANY, CF SAME PLACE.
Letters .Patent No. 75,870, dated March 24, 1868.
IMPROVEMENT 'IN BRACES'PCR BITS.
@Ligt Stigthtlt tttttttt te in tgttttttttt tttnt mit nmltinwt` putt nf ttt sume.
TO .ALL WI-IOM IT MAY GONOERN:
Beit known that I, CnAItLEs M. DAIsoLL, of New London, in the countyof'New London, and State of Connecticut, have invented a new and useful Improvement in Braces for Bits; and I do hereby declare that thc following lis a full, clear, and exact description thereof, which will enable those skilled in the art to make and uso the same, reference boing had to the' accompanying drawings, forming part of this specification.
This 'invention relates to the manner in which the bit is fastened and held in the brace; and it consists in a tubular female screw or nut, et' novel formation, and in two, or more jaws or clamps, which are operated by tho nut, whereby thc bit is firmly' secured in the brace, and easily detached therefrom, as will hereinafter be described.
Figure 1 represents tho end ofthe brace with the nut oi',l in order'to show to better advantage the form of the clamp.
Figure 2.is a section of the fasteningend of the brace, wi-th the shank of an auger-bit-fastened according' to my invention.
Figure 3 is a View of tho outer ends of the clamps.
Similar letter-sof reference indicato corresponding parts.
A represents apart-ion of the brace, it being the fastening-end; B is the tubular nut; C represents the clamps; D is the auger-bit. The end of the brace isi-formed with an'oriec sufficiently large-to admit thc end of any ordinary anger er other bit; .and the clamps C are so attached that they have suiiicient play or open suilieiently wide to efhcloseand hold the largest 4size of auger-bits, as well as' the smallest pod or gimlet-bit. In fig. 1 a. side view of one of the clamps is seen. The inncnend is in a T-form, and is'Sunken into thc brace, so that its'baclc or outer surface is flush with the brace, or so that it may heforeed inward from the surface ofthe brace (as would be necessary in holding a very small bit) as far as theende'` the brace or the line marked a. This T-end is simply dropped inte the recess prepared for it, when it .is held bythe nut B, as seen in fig. 2. The peculiar shape of the-outer portions of 'these clamps will also be noticed inthe same figure: The portion b of the T-end acts as a hinge upon which theclamp works.` The nut B is flaring at its outer end, as seen in the drawing, so that when it is screwed or turned up towards the clamp, it strik-es the inclined surfaces of the clamps, and forces them together or towards eachother. The clamps are cut out on their inner sides, so that they admit the enlarged or angular portion offthe shank of Ath'e bit, but close up upon the bit, as seen, when forced in by the nut. When .there is noshankor hit between the clamps, vthe nut will force lthem in contact with Ieach other, when their .outer ends will present the appearance seen invfig. 3. By turning back the nut B, the clamps are expanded4 suihfeientlygto admitthe largestsize of augerbit without being displaced, but they are readilyY detached by turningthc nut 'l ia .ck` past' them. i' I Y It will bc seen, from this formation' and arrangement, that the scrdw-thread of the nut B is not brought in contact withthe clamps, and ofcourse it cannot be injured thereby.
I donot4 claim fastening the jaws to thcstock -by pivots or fixed pins, as lI am aware this has already been done; but` having thus deseribedlmy invention, v
I' claim as new, and desire to secure by Letters Patent- 1. The jaws C, constructed asdescribed, having a lsenriicirculur hase inelinng outward, and provid-ed with thc T-shaped shank, fitting without pivots in the T-slot'ot'. the stock A, as herein described, for the purpose specified.
2. The jaws G,`const ru'c tcdas described, in combination with thcserew-nut B, when the inner inclined surface of such-nut bears equally at all peints around the inclined circumference of the jaws C, provided with the T-shanks, as herein described, for the pnrposcspcciied.
3. The stock A, when provided with the-T-slot, adapted to receive the T-,shank of the jaws C, in con'ibinntion with the nut B, whose screw-thread is nbojvc thejaws, as herein described, for the purpose specified.
y CHARLES M. DABCLL.
Witnesses:A
NATHAN BLcIInn, E. '1'. BROWN.
Publications (1)
Publication Number | Publication Date |
---|---|
US75870A true US75870A (en) | 1868-03-24 |
Family
ID=2145374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US75870D Expired - Lifetime US75870A (en) | daboll |
Country Status (1)
Country | Link |
---|---|
US (1) | US75870A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2526955A (en) * | 1944-10-10 | 1950-10-24 | Cherry Rivet Company | Cutting tool for blind rivets |
US2868550A (en) * | 1956-10-03 | 1959-01-13 | Bardons & Oliver Inc | Collet |
-
0
- US US75870D patent/US75870A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2526955A (en) * | 1944-10-10 | 1950-10-24 | Cherry Rivet Company | Cutting tool for blind rivets |
US2868550A (en) * | 1956-10-03 | 1959-01-13 | Bardons & Oliver Inc | Collet |
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