US819536A - Shifter-lock for pawl-and-ratchet tools. - Google Patents

Shifter-lock for pawl-and-ratchet tools. Download PDF

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Publication number
US819536A
US819536A US19137004A US1904191370A US819536A US 819536 A US819536 A US 819536A US 19137004 A US19137004 A US 19137004A US 1904191370 A US1904191370 A US 1904191370A US 819536 A US819536 A US 819536A
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United States
Prior art keywords
shifter
pawl
ratchet
lock
ratchet tools
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
Application number
US19137004A
Inventor
Zachry T Furbish
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NORTH BROTHERS Manufacturing Co
Original Assignee
NORTH BROTHERS Manufacturing Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NORTH BROTHERS Manufacturing Co filed Critical NORTH BROTHERS Manufacturing Co
Priority to US19137004A priority Critical patent/US819536A/en
Application granted granted Critical
Publication of US819536A publication Critical patent/US819536A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25B15/06—Screwdrivers operated by axial movement of the handle
    • 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
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1527—Screw and nut devices

Definitions

  • the object of my invention is to provide means for retaining the shifter of a pawl-and to ratchet screw-drivers but it will be underv DD.
  • A is the handle of a ratchet screw-driver.
  • the ratchet mec anism in the resent instance consists of two ratchet-whee s D D",
  • a spindle E Passing'through the wheels D D is a spindle E, having cut therein a double spiral groove. A spline on one wheel travels in one groove and a spline on the other wheel trav els in the other groove.
  • Carried by the spindle'E is a tool-chuck F, and ivoted to the bearing A are two pawls I I, aving projections which 0 is a shifter for throwing one or other, or both, of the pawls I I out of engagement with the wheels D D.
  • This shifter in the present instance has a body a, which conforms ing projection c, which extends through a slot 6 in the casing B. The upper surface of the projection is preferably roughened, so
  • T he is a spring-plate carried by the shifter.
  • the shifter can always be adjusted properl inrespect tothe paw It be understood that when my mven-' o tion is applied to a Single-pawl tool then only one or two notches need be made in the casing, and in some instances the notches may be made only on one side of the slot and a sinIgle lug used.
  • the ratchet-whee s, a spring-s er bearing upon the pawls and arranged to throw one pawl into on agement' and the other outof engages ment w on it is shifted longitudinally, a projection on the shifter extending through the slot, and a lug on the Shifter resting in one of the notches when the shifter is in 1ts normal position but when the shifter is depressed.

Description

' No. a1.9', 6'; PATENTED MAY 1;.190e.
z. T-. FURBISH.
5x11371133. LOOK FOR PAWL AND RATCHET TOOLS.
APPLICATION PILEDJAK. 30, 1904.
UNITED STATES PATENT o FIoE.
ZAOHRY T. FURBISH, F" PHILADELPHIA, PENNSYLVANIA, ASSTGNOR To NORTH BROTHERS MANUFACTURING-COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.
SHIFTER-LOC K FOR PAWL-AhlD-RATCHET TOOLS- Specification of Letters Patent.
Patented May 1, 1906.
Application filed January 30, 1904. Serial No. 191.370.
To all whom it may concern:
Be it known that I, .ZAoHRY T. FUEBISH, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in ShifterLocks for PaWl-and- Ratchet Tools, of which the following is a specification.
The object of my invention is to provide means for retaining the shifter of a pawl-and to ratchet screw-drivers but it will be underv DD.
stood that it may be ap lied to anyratchettool without de arting iibm my invention. A is the handle of a ratchet screw-driver.-
is a casing inclosin the ratchet mechanism. The ratchet mec anism in the resent instance consists of two ratchet-whee s D D",
mounted in a bearing A, carried by the handle A. Passing'through the wheels D D is a spindle E, having cut therein a double spiral groove. A spline on one wheel travels in one groove and a spline on the other wheel trav els in the other groove. Carried by the spindle'E is a tool-chuck F, and ivoted to the bearing A are two pawls I I, aving projections which 0 is a shifter for throwing one or other, or both, of the pawls I I out of engagement with the wheels D D. This shifter in the present instance has a body a, which conforms ing projection c, which extends through a slot 6 in the casing B. The upper surface of the projection is preferably roughened, so
that it can be engaged by the fingers of the operator.
T he; is a spring-plate carried by the shifter.
engage their respective wheels to the shape of the casing B, and an operatplate rests on the pawls and throws them into or out of engagement with the ratchet-Wheels.
Heretofore no means were provided for locking the shifter after adjustment and it would be accidentally shifted in many instances when in use. tion by forming notches in the walls of the slot 6, three in the present instance, as at b 1) b and on each side of the projection. c of I overcome this 'objecthe shifter (1,1 form In s c c, which enter the notches and hold the s ter against accidental movement, the spring of the shifter allowing the shifter to be depressed, so that the lugs 0 clear the casing'when it is desired to movethe shifter from one position to another. Furthermore, by the use of. my invention the shifter can always be adjusted properl inrespect tothe paw It be understood that when my mven-' o tion is applied to a Single-pawl tool then only one or two notches need be made in the casing, and in some instances the notches may be made only on one side of the slot and a sinIgle lug used. v
claim. as-my invention- The combination in a ratchet-tool, of acasing having a slot therein and a series of.
to the casin and arran ed to engage. the ratchet-whee s, a spring-s er bearing upon the pawls and arranged to throw one pawl into on agement' and the other outof engages ment w on it is shifted longitudinally, a projection on the shifter extending through the slot, and a lug on the Shifter resting in one of the notches when the shifter is in 1ts normal position but when the shifter is depressed.
said lug will be out of the plane of the slot, so
that the shifter can be moved longitudinally,
substantially as described.
In testimony whereof I have signed my name to this specification in the presence of two subscri oing witnesses.
Witnesses:
WILL. A. BARR, J 0s. H. KLEIN.
ZAOHRY T. FURVBISH.
notches in one of thewalls of the slot,ratchetwheels mounteo in the casing, pawls pivoted
US19137004A 1904-01-30 1904-01-30 Shifter-lock for pawl-and-ratchet tools. Expired - Lifetime US819536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US19137004A US819536A (en) 1904-01-30 1904-01-30 Shifter-lock for pawl-and-ratchet tools.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19137004A US819536A (en) 1904-01-30 1904-01-30 Shifter-lock for pawl-and-ratchet tools.

Publications (1)

Publication Number Publication Date
US819536A true US819536A (en) 1906-05-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485699A (en) * 1982-08-12 1984-12-04 Fuller Kevin S Rotatable hand tool with directional drive control
US20100298838A1 (en) * 2009-05-19 2010-11-25 Alphatec Spine, Inc. Surgical screwdriver
US20120095447A1 (en) * 2010-10-19 2012-04-19 Occam Scientific, Llc Apparatus for rotating medical devices, systems including the apparatus, and associated methods
US20120318104A1 (en) * 2011-06-15 2012-12-20 Zu-Shung Shu Ratchet Screwdriver
US9107691B2 (en) 2010-10-19 2015-08-18 Distal Access, Llc Apparatus for rotating medical devices, systems including the apparatus, and associated methods
US9199359B2 (en) 2012-11-13 2015-12-01 Worktools, Inc. Hand squeeze powered rotary tool
US11000307B2 (en) 2010-10-19 2021-05-11 Minerva Surgical Inc. Apparatus for rotating medical devices, systems including the apparatus, and associated methods
US11446050B2 (en) 2014-04-28 2022-09-20 Minerva Surgical, Inc. Tissue resectors with cutting wires, hand operated tissue resecting systems and associated methods

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485699A (en) * 1982-08-12 1984-12-04 Fuller Kevin S Rotatable hand tool with directional drive control
US20100298838A1 (en) * 2009-05-19 2010-11-25 Alphatec Spine, Inc. Surgical screwdriver
US20120095447A1 (en) * 2010-10-19 2012-04-19 Occam Scientific, Llc Apparatus for rotating medical devices, systems including the apparatus, and associated methods
US8845621B2 (en) * 2010-10-19 2014-09-30 Distal Access, Llc Apparatus for rotating medical devices, systems including the apparatus, and associated methods
US9107691B2 (en) 2010-10-19 2015-08-18 Distal Access, Llc Apparatus for rotating medical devices, systems including the apparatus, and associated methods
US11000307B2 (en) 2010-10-19 2021-05-11 Minerva Surgical Inc. Apparatus for rotating medical devices, systems including the apparatus, and associated methods
US20120318104A1 (en) * 2011-06-15 2012-12-20 Zu-Shung Shu Ratchet Screwdriver
US8720307B2 (en) * 2011-06-15 2014-05-13 Zu-Shung Shu Ratchet screwdriver
US9199359B2 (en) 2012-11-13 2015-12-01 Worktools, Inc. Hand squeeze powered rotary tool
US11446050B2 (en) 2014-04-28 2022-09-20 Minerva Surgical, Inc. Tissue resectors with cutting wires, hand operated tissue resecting systems and associated methods

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