US3273428A - Mechanical nut driving wrench - Google Patents

Mechanical nut driving wrench Download PDF

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Publication number
US3273428A
US3273428A US321275A US32127563A US3273428A US 3273428 A US3273428 A US 3273428A US 321275 A US321275 A US 321275A US 32127563 A US32127563 A US 32127563A US 3273428 A US3273428 A US 3273428A
Authority
US
United States
Prior art keywords
wrench body
anvil block
wrench
impact
shoulder
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
US321275A
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English (en)
Inventor
Rudeke Bengt Gunnar
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.)
Atlas Copco AB
Original Assignee
Atlas Copco AB
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 Atlas Copco AB filed Critical Atlas Copco AB
Application granted granted Critical
Publication of US3273428A publication Critical patent/US3273428A/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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston

Definitions

  • This invention relates to mechanical nut driving wrenches operated by the impacts delivered by power operated reciprocating hammer means and primarily in tended for tightening and loosening of very large sized nuts or bolts.
  • Such large sized nuts are for example the tightly set nuts used for connecting marine diesel engine cylinder covers and cylinders to the engine frame and these and similar applications often call for wrenches which can be used in the very restricted space between the cylinders and also can be conveniently used while the ship is at sea.
  • a further object of the invention is to provide a mechanical nut driving wrench of the above character having a sturdy, compact and effective construction.
  • FIG. 1 shows a nut driving wrench according to the invention in a perspective view.
  • FIG. 2 shows on a somewhat larger scale the head portion of the nut driving wrench in a plan view and
  • FIG. 3 is a partly sectional side view of FIG. 2.
  • FIG. 4 is a fragmentary view of a portion of the wrench head in FIG. 2. showing a modification in which a spring arrangement is added to the wrench.
  • the nut driving wrench includes a head portion including two separate plate shaped members 11 and 12 extending in parallel relation to one another and forming two coaxially spaced journals or guiding rings 13. Between the rings there is carried for partial free rotation therein an annular open ended socket wrench body 14 internally provided with the usual flat walled opening 15 adapted to fit over the hexagonal nut to be driven.
  • the end of the head portion 10 opposite the rings 13 is formed by massive portions of the two plate shaped members 11, 12 and these massive por- "ice tions are centered one on the other by means of centering pins 16 and are firmly connected by means of screws 17.
  • the two members 11, 12 may be taken apart permitting removal of the wrench body 14 and insertion of a wrench body of different internal size in between the rings 13.
  • the massive portions of the members 11, 12 are furthermore provided with an opening therethrough formed by two pairs of partly cylindrical coaxial bores 18 and 19, the larger pair 18 forming a socket for receiving and clamping by means of the screws 17 the forward end of an impact tool 20, which has a reciprocating hammer piston 21 therein adapted to deliver blows to an anvil block 22 protruding from the opening in said massive portions.
  • the anvil block 22 performs its stroke in the smaller sized bore 19 in the massive portions of the members 11, 12.
  • the wrench body 14 has an outer lug 23 centrally thereon having an impact face or shoulder 24 which preferably is suitably rounded and extends substantially radially in outward direction from the wrench body 14.
  • the shoulder 24 is intended for cooperation with. the impact of the anvil block 22 and adapted to receive impacts therefrom.
  • the impact tool 20 can be of any known type and may be driven pneumatically, hydraulically or electrically depending on the available power.
  • the socket or bores 18, 19 extend in such manner as to keep, as soon as the shoulder 24 abuts the anvil block 22;, the longitudinal central axis of the impact tool 20, i.e.
  • the curvature of the impact face 24 is preferably such as to keep the point of contact between said face 24 and the anvil block 22 substantially on the longitudinal central axis of the impact tool 20 during the entire stroke of the anvil block 22.
  • the nut In operation the nut is screwed on the bolt manually or if necessary by the aid of a suitable tool until the resistance will be large enough to arrest the nut.
  • the impact tool 20 is used as a handle means and manipulated to place the wrench body 14 on the nut andthe impact tool 20 is then turned until the anvil block 22 abuts the impact face 24 and then started.
  • the impact tool 20 is a conventional pneumatic hammer receiving compressed air from a suitable source, not shown, through a hose 25 and by means of the con ventional distributing valve mechanism include therein and likewise not shown, the hammer piston 21 will be reciprocated delivering impacts to the anvil block 22 and the impact face or shoulder 24.
  • the head portion 10 can likewise be formed at an obtuse angle with respect to the impact tool or handle means 20 so that the space necessary for operation of the tool will be kept at a minimum.
  • said nut driving wrench comprising a pair of spaced apart parallel annular journals forming a head portion, a pressure fluid operated hammer connected at the forward end thereof to said head portion, an impact transmitting anvil block at said forward end of said hammer, an open ended annular socket wrench body coplanar with, but offset from the longitudinal central axis of said anvil block and rotatably carried between said journals for bidirectional rotation therein, a radially directed shoulder on said wrench body abutting said anvil block with the point of abutting contact between said shoulder and said anvil block always defining an obtuse angle between the central axis of said anvil block and a plane through the axis of rotation of said wrench body and said point, with said wrench body rotatable between a position with said anvil block abutting said shoulder and a position with said anvil block remote from said shoulder for permitting
  • a mechanical nut driving wrench operated by impacts and including power operated reciprocating hammer means for delivering a series of rotational blows to a wrench body said nut driving wrench comprising a head portion, an elongated pressure fluid operated hammer connected at the forward end thereof to said head portion, an impact delivering surface disposed concentrically with respect to the longitudinal central axis of said hammer and at said forward end thereof, an open ended annular socket wrench body co-planar with but offset from said central axis, a lug integral with and on said wrench body, said lug having an impact face directed substantially radially outwardly from said wrench body, cooperating annular journals on said head portion and around said wrench body and coaxial with said wrench body for rotatably carrying said wrench body on said head portion, and said head portion mounted for bidirectional partial rotation on said journals relative to said wrench body between a position with said surface abutting said face and a position with said surface remote from said face for permitting a substantial angular displacement of said impact face portion relative to said head upon an impact delivered
  • a mechanical nut driving wrench as set forth in claim 2 in which said head is provided with opposed flat outer surfaces parallel with said central axis and perpendicular to the axis of rotation of said wrench body.
  • said nut driving wrench comprising a head portion, elongated impact delivering means forming a handle and connected at one end thereof to said head portion, an impact delivering surface disposed concentrically with respect to the longitudinal central axis of said impact delivering means and at said one end thereof, a wrench body, a lug fixedly connected to said wrench body, said lug having an impact face directed substantially radially outwardly from said wrench body, and said head portion mounted for bidirectional partial rotation on said wrench body for permitting a substantial angular displacement of said impact face relative to said head portion upon an impact delivered by said impact delivering surface and for enabling the abutting contact between said face and said surface to be maintained subsequently to said impact by movement of said impact delivering means relative to said lug.
  • a mechanical nut driving wrench as set forth in claim 4 in which resilient means are provided between said wrench body and said head for biasing said surface and said face into abutting relationship.
  • a mechanical nut driving wrench as set forth in claim 1 in which the point of abutting contact between said face and said surface always defines an obtuse angle between the central axis of said impact delivering means and a plane through the axis of rotation of said wrench body and said point.
  • said nut driving wrench comprising an open ended annular socket wrench body having bearing surfaces thereon and coaxial therewith, a radially directed outer shoulder centrally on said wrench body, handle means coplanar with said wrench body and having annular journals at one end thereof and around said bearing surfaces for providing partial bidirectional rotatability of said handle means relative to said wrench body, said handle means including a head portion and a shaft portion at an obtuse angle to one another and with the longitudinal axis of said shaft portion intersecting said shoulder, and said shaft portion consisting of a pressure fluid operated hammer in abutting contact with said shoulder and operable for imparting blows to said shoulder for turning said wrench body in one direction and for being manually turned in the same direction therewith for maintaining said abutting contact between said hammer and said shoulder.
  • a mechanical nut driving wrench as set forth in claim 7 in which resilient means are provided between said wrench body and said head portion for biasing said shoulder into abutting relationship with said hammer.
  • said nut driving wrench comprising an open ended annular socket wrench body, a radially directed outer shoulder centrally on and integral with said wrench body, pivot means on said wrench body, handle means coplanar with said wrench body and mounted for partial bidirectional rotation thereon on said pivot means, said handle means including a head portion and a shaft portion the latter substantially tangential to said wrench body and with the longitudinal axis of said shaft portion intersecting said shoulder, said shaft portion consisting of a pressure fluid operated hammer in abutting contact with said shoulder and operable for imparting blows to said shoulder for turning said wrench body in one direction, said shaft portion being rotatably disposed with respect to said wrench body resilent means disposed between said wrench body and said handle means for maintaining said abutting contact between said hammer and said shoulder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
US321275A 1962-11-07 1963-11-04 Mechanical nut driving wrench Expired - Lifetime US3273428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1194162 1962-11-07

Publications (1)

Publication Number Publication Date
US3273428A true US3273428A (en) 1966-09-20

Family

ID=20294877

Family Applications (1)

Application Number Title Priority Date Filing Date
US321275A Expired - Lifetime US3273428A (en) 1962-11-07 1963-11-04 Mechanical nut driving wrench

Country Status (5)

Country Link
US (1) US3273428A (da)
CH (1) CH420006A (da)
DE (1) DE1478785A1 (da)
DK (1) DK104225C (da)
GB (1) GB980165A (da)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675515A (en) * 1970-09-30 1972-07-11 Creative Tool High energy impact wrench assembly
US3912022A (en) * 1974-05-20 1975-10-14 Sun Oil Co Pennsylvania Portable power impact wrench
US4157120A (en) * 1977-07-05 1979-06-05 Marquette Metal Products Co. Rotary impact mechanism having a spring accelerated inertia member
USD375237S (en) 1996-03-08 1996-11-05 Unex Corporation Hydraulic wrench
US6502485B1 (en) * 2002-02-25 2003-01-07 Joe Martin Salazar Impact ratchet wrench
USD491435S1 (en) 2003-03-18 2004-06-15 John K. Junkers Fluid operated wrench
USD491436S1 (en) 2003-05-05 2004-06-15 John K. Junkers Fluid operated wrench
US20050279196A1 (en) * 2004-06-21 2005-12-22 Hollar Kenneth G Angular impact wrench
USD730135S1 (en) * 2012-12-07 2015-05-26 Norwolf Tool Works, Inc. Hydraulic wrench
USD732916S1 (en) * 2012-12-07 2015-06-30 Steve Spirer Hydraulic wrench
BE1023584B1 (nl) * 2016-03-02 2017-05-09 Fve Consulting Bvba Draaiend impactgereedschap en gebruiken daarvan
USD843801S1 (en) * 2017-09-14 2019-03-26 Atlas Copco Industrial Technique Ab Hydraulic wrench
USD1042067S1 (en) * 2023-02-28 2024-09-17 Primesource Consulting Llc Limited clearance tool
US12103143B1 (en) * 2014-02-19 2024-10-01 Torq/Lite, Llc Method for tightening or loosening with a squeezing clamp hammer union torque tool
US12168282B1 (en) 2018-10-15 2024-12-17 Keith Hirshburg Socket break tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8435272U1 (de) * 1984-12-01 1985-02-28 Wagner, Paul-Heinz, 5203 Much Hydraulischer kraftschrauber
US7497147B2 (en) * 2006-09-12 2009-03-03 Unex Corporation Torque tool for tightening or loosening connections, and method of tightening or loosening the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2086261A (en) * 1936-06-22 1937-07-06 Independent Pneumatic Tool Co Hammer wrench
US2119968A (en) * 1935-03-15 1938-06-07 William H Keller Inc Power wrench
US2342783A (en) * 1940-03-01 1944-02-29 Aron Julius Power wrench
US2362499A (en) * 1942-06-09 1944-11-14 Carl W Porter Impact wrench

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2119968A (en) * 1935-03-15 1938-06-07 William H Keller Inc Power wrench
US2086261A (en) * 1936-06-22 1937-07-06 Independent Pneumatic Tool Co Hammer wrench
US2342783A (en) * 1940-03-01 1944-02-29 Aron Julius Power wrench
US2362499A (en) * 1942-06-09 1944-11-14 Carl W Porter Impact wrench

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675515A (en) * 1970-09-30 1972-07-11 Creative Tool High energy impact wrench assembly
US3912022A (en) * 1974-05-20 1975-10-14 Sun Oil Co Pennsylvania Portable power impact wrench
US4157120A (en) * 1977-07-05 1979-06-05 Marquette Metal Products Co. Rotary impact mechanism having a spring accelerated inertia member
USD375237S (en) 1996-03-08 1996-11-05 Unex Corporation Hydraulic wrench
US6502485B1 (en) * 2002-02-25 2003-01-07 Joe Martin Salazar Impact ratchet wrench
USD491435S1 (en) 2003-03-18 2004-06-15 John K. Junkers Fluid operated wrench
USD491436S1 (en) 2003-05-05 2004-06-15 John K. Junkers Fluid operated wrench
US7194938B2 (en) 2004-06-21 2007-03-27 Kenneth Gene Hollar Angular impact wrench
US20050279196A1 (en) * 2004-06-21 2005-12-22 Hollar Kenneth G Angular impact wrench
USD730135S1 (en) * 2012-12-07 2015-05-26 Norwolf Tool Works, Inc. Hydraulic wrench
USD732916S1 (en) * 2012-12-07 2015-06-30 Steve Spirer Hydraulic wrench
US12103143B1 (en) * 2014-02-19 2024-10-01 Torq/Lite, Llc Method for tightening or loosening with a squeezing clamp hammer union torque tool
BE1023584B1 (nl) * 2016-03-02 2017-05-09 Fve Consulting Bvba Draaiend impactgereedschap en gebruiken daarvan
EP3213870A1 (en) * 2016-03-02 2017-09-06 FVE Consulting BVBA Rotary impact tool and uses of same
USD843801S1 (en) * 2017-09-14 2019-03-26 Atlas Copco Industrial Technique Ab Hydraulic wrench
US12168282B1 (en) 2018-10-15 2024-12-17 Keith Hirshburg Socket break tool
USD1042067S1 (en) * 2023-02-28 2024-09-17 Primesource Consulting Llc Limited clearance tool

Also Published As

Publication number Publication date
DE1478785A1 (de) 1969-01-30
DK104225C (da) 1966-04-18
GB980165A (en) 1965-01-13
CH420006A (de) 1966-08-31

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