US207964A - Improvement in ratchet bit-stocks - Google Patents
Improvement in ratchet bit-stocks Download PDFInfo
- Publication number
- US207964A US207964A US207964DA US207964A US 207964 A US207964 A US 207964A US 207964D A US207964D A US 207964DA US 207964 A US207964 A US 207964A
- Authority
- US
- United States
- Prior art keywords
- ratchet
- pawl
- bit
- 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
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002441 reversible Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/02—Screwdrivers operated by rotating the handle
- B25B15/04—Screwdrivers operated by rotating the handle with ratchet action
-
- 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
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2133—Pawls and ratchets
- Y10T74/2141—Sliding pawls
Definitions
- Ratchet-braces having a ratchet wheel or wheels secured to the bit-holder and springpawls engaging said ratchet wheel or wheels are old and in great variety.
- My invention consists of the brace-head and ratchet-wheel, in combination with a single reversible and spring-actuated pawl, adapted to reciprocate longitudinally, and also to rotate one-half of a revolution, and present its bevel and holding face to the ratchet-wheel, either as a right-hand or a left-hand pawl, as hereinafter described.
- Figurel is a side elevation of the head of a ratchetbraee which embodies my invention.
- Fig. 2 is a plan view of the same, and
- Fig. 3 is a partial plan view and section on line or w of Fig. 1.
- the bit-holder A may be of any ordinary construction. It is fitted so as to rotate in bearings within the head B of the brace C, and rigidly attached to its upper end is a ratchet-wheel, D, having straight-sided teeth, both sides of said teeth being the same.
- a chamber extending at right angles to the axis of the ratchet-wheel D, within which chamber is a reciprocating pawl, a, and its spring I).
- the outer end of this pawl is beveled, while so much of one side as isv directly opposite this bevel is straight, as shown in Fig. 3.
- journal c c which fit the journal-bearings formed by the walls of the chamber in the head, so that the pawl may reciprocate longitudinally, and also make one-half of a revolution.
- spring b acts to continually throw the pawl toward the ratchet-wheel D.
- a handle At one end of the pawl, and projecting at right angles thereto, is a handle, (I, the same being so located with reference to the bevel that when said handle is thrown to the right,
- the slide E which slides in a groove transversely to the axis of the bit-holder, may be -brought opposite the notch e in the head B,
- a small friction-spring may be placed under the slide E to prevent accidental displacement, or it may be fitted to slide snugly without a spring.
- ratchet-brace having both a right-handed and a left handed pawl fitted in circular bearings, and having both a longitudinal and partial rotary movement, the latter being for the purpose of throwing the pawls into a position for fasten ing .them away from the ratchet-wheel, and
Description
H. o. HART. Ratchet Bit-Stock. v No. 207,964. Patented Sept. 10.1878
UNITED STATES PATENT Orrron HIIBERT C. HART, OF UNIONVILLE, ASSIGNOR TO P. & F. CORBIN, OF NEW BRITAIN, CONNECTICUT.
IMPROVEMENT IN RATCHET BIT-STOCKS.
Specification forming part of Letters Patent No. 207,964, dated September 10, 1878; application filed July 26, 1878.
To all whom it may concern:
Be it known that I, HIIBERT C. HART, of Unionville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Ratchet- Braces, of which the following is a specification:
Ratchet-braces having a ratchet wheel or wheels secured to the bit-holder and springpawls engaging said ratchet wheel or wheels are old and in great variety.
My invention consists of the brace-head and ratchet-wheel, in combination with a single reversible and spring-actuated pawl, adapted to reciprocate longitudinally, and also to rotate one-half of a revolution, and present its bevel and holding face to the ratchet-wheel, either as a right-hand or a left-hand pawl, as hereinafter described.
In the accompanying drawing, Figurel is a side elevation of the head of a ratchetbraee which embodies my invention. Fig. 2 is a plan view of the same, and Fig. 3 is a partial plan view and section on line or w of Fig. 1. I A
The bit-holder A may be of any ordinary construction. It is fitted so as to rotate in bearings within the head B of the brace C, and rigidly attached to its upper end is a ratchet-wheel, D, having straight-sided teeth, both sides of said teeth being the same.
In the upper part of the head B is a chamber extending at right angles to the axis of the ratchet-wheel D, within which chamber is a reciprocating pawl, a, and its spring I). The outer end of this pawl is beveled, while so much of one side as isv directly opposite this bevel is straight, as shown in Fig. 3.
At or near each end of the pawl a are journals c c, which fit the journal-bearings formed by the walls of the chamber in the head, so that the pawl may reciprocate longitudinally, and also make one-half of a revolution. The
spring b acts to continually throw the pawl toward the ratchet-wheel D.
At one end of the pawl, and projecting at right angles thereto, is a handle, (I, the same being so located with reference to the bevel that when said handle is thrown to the right,
bevel and holding face of the pawl, so as to present its straight side to the other side of the teeth in the ratchet-wheel.
When it is desired to fasten the bit-holder within the head for use as an ordinary brace, the slide E, which slides in a groove transversely to the axis of the bit-holder, may be -brought opposite the notch e in the head B,
and slid into the same to securely lock the parts together.
A small friction-spring may be placed under the slide E to prevent accidental displacement, or it may be fitted to slide snugly without a spring.
When the ratchetfeature of the brace is to be used again, the slide must be withdrawn.
I am aware that a ratchet-brace has been made having both a right-handed and a left handed pawl fitted in circular bearings, and having both a longitudinal and partial rotary movement, the latter being for the purpose of throwing the pawls into a position for fasten ing .them away from the ratchet-wheel, and
fied.
HUBERT G. HART. Witnesses CHARLES PECK, E. L. PRIOR.
Publications (1)
Publication Number | Publication Date |
---|---|
US207964A true US207964A (en) | 1878-09-10 |
Family
ID=2277369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US207964D Expired - Lifetime US207964A (en) | Improvement in ratchet bit-stocks |
Country Status (1)
Country | Link |
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US (1) | US207964A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734413A (en) * | 1956-02-14 | Chuck and ratchet mechanism | ||
US20020055884A1 (en) * | 2000-11-06 | 2002-05-09 | Nec Infrontia Corporation | Personal information buying/selling method |
-
0
- US US207964D patent/US207964A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734413A (en) * | 1956-02-14 | Chuck and ratchet mechanism | ||
US20020055884A1 (en) * | 2000-11-06 | 2002-05-09 | Nec Infrontia Corporation | Personal information buying/selling method |
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