US3792725A - Hammer - Google Patents

Hammer Download PDF

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Publication number
US3792725A
US3792725A US00307443A US3792725DA US3792725A US 3792725 A US3792725 A US 3792725A US 00307443 A US00307443 A US 00307443A US 3792725D A US3792725D A US 3792725DA US 3792725 A US3792725 A US 3792725A
Authority
US
United States
Prior art keywords
handle
section
aperture
tool
head
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
US00307443A
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English (en)
Inventor
O Burgeson
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.)
Stanley Works
Original Assignee
Stanley Works
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 Stanley Works filed Critical Stanley Works
Application granted granted Critical
Publication of US3792725A publication Critical patent/US3792725A/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
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/34—Attaching handles to the implements by pressing the handle on the implements; using cement or molten metal, e.g. casting, moulding, by welding or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings

Definitions

  • a new and improved interconnection is provided between the striking element and handle of a percussive tool.
  • the striking element is provided with an eye having side walls converging from both ends thereof to provide a portion of reduced cross section located at the axis of percussion of the tool and the tool handle is of generally rectangular cross section with its corners tangentially and frictionally engaging the portion of reduced cross section to provide an interference fit therewith.
  • the interconnection permits adjustable p0- sitioning of the head relative to the handle for achieving a balanced angular relationship between the striking face of the head and the handle of the tool.
  • a suitable impact resistent resin fills the cavity between the handle and the side walls of the eye to form a sleeve extending continuously along the length of the aperture on each side of the handle, but gradually increasing in thickness toward both ends of the eye.
  • the present invention relates generally to hand tools designed for percussive use and more particularly is concerned with a new and improved connection between the handle and the striking element or head of the percussive tool.
  • the present invention has as an object the provisions for a new and improved hand tool of the percussive type that can be manufactured on a mass production basis, yet is designed so as to obviate the effect of manufacturing variations. Included in this object is the provision for assuring the balance and feel of high quality hand tools in mass produced units.
  • Another object of the present invention is to provide a new and improved hand tool wherein the connection between the striking element and the handle can be appropriately adjusted to assure a correct relationship between the handle and the striking face of the tool irrespective of manufacturing variations that might be present in the eye of the striking element. Included in this object is the provision for a secure yet adjustable interference connection between the eye of the striking element and the handle to assure concentric and balanced positioning of the handle.
  • Still another object of the present invention is to provide a new and improved hand tool of the type described which not only possesses the improved characteristics mentioned hereinbefore, but also achieves these characteristics while using a handle of uniform cross section, the entire design evidencing improved economies of manufacture and consistent reliable operation.
  • a percussive hand tool comprising a striking element having an eye with side walls converging from both ends thereof so as to provide a portion of reduced cross section located at the tools axis of percussion, said reduced portion being of generally elliptical configuration.
  • the tool handle is of generally rectangular cross section with its corners tangentially and frictionally engaging the portion of reduced cross section to provide an interference fit therewith.
  • This interconnection provides a fit which acts as a universal joint to permit adjustable positioning of the head relative to the handle for achieving a balanced angular relationship between the striking face of the head and the handle of the tool.
  • a suitable impact resistent resin fills the cavity between the handle and the side walls of the eye to form a continuous sleeve extending uninterruptedly along the length of the aperture on each side of the handle and gradually increasing in thickness toward each end of the eye to fully surround the handle.
  • FIG. 1 is a plan view, partially broken away and partially in section, of a ball peen hammer incorporating the features of the present invention
  • FIG. 2 is a sectional view taken along the line 22 of FIG. 1;
  • FIG. 3 is an enlarged sectional view taken along the line 33 of FIG. 1.
  • a ball peen hammer comprised of a striking element or, head 10 and an elongated handle 12 secured to the head.
  • the striking element 10 has the customary poll and bell 14 at one end terminating in a broad striking surface 16 and the smaller ball peen- 18 on the opposite end thereof.
  • the axis of percussion of the head extends centrally through the striking element from approximately the center of the striking surface to the apex of the ball peen. In the embodiment illustrated, the axis of percussion is essentially located along the section line 3-3 of FIG. 1.
  • a medial aperture or eye extends fully through the head in a direction transverse to the axis of percussion.
  • the eye has side walls 22 and front and rear walls, 24 and 26 respectively, which are substantially smooth and unbroken and taper inwardly in a converging fashion from opposite ends of the eye to provide a central portion 28 of reduced cross section located approximately at the axis of percussion.
  • the portion 28 of reduced cross section is of generally elliptical configuration.
  • the entrance and exit ends of the eye may assume a more rectangular configuration or other suitable configuration.
  • the elliptical shape illustrated is generally preferred throughout the length of the eye.
  • the handle 12 secured to the striking element is an elongated glass fiber reinforced rod 32 of substantially uniform cross section along its entire length and is covered by a suitable resilient grip 34 on the free end thereof.
  • the handle preferably exhibits a generally rectangular cross section and does not vary in cross sectional demension at that portion thereof positioned within the eye of the hammer head. This is a particularly desirable feature not only from the standpoints of size control and the savings involved in using a straight rod as opposed to a tapered member, but also from the view point of the strength characteristics of the handle.
  • the glass fiber reinforced rod exhibits a slight transverse curvature in the side walls thereof, as best shown in FIG.
  • the exact configuration thereof may vary substantially depending upon the size of the rod and the specific configuration of the eye of the hammer head. It is essential however, that the corners 36 of that portion of the rod positioned within the eye provide an interference fit with the portion 28 of the eye exhibiting the smallest cross sectional opening and that these corners frictionally engage the walls of the eye in a tangential manner. This facilitates a degree of angular adjustment of the head relative to the longitudinal axis of the hammer handle, which adjustment will obviate and overcome manufacturing variations in either the striking element or the handle.
  • the intimate frictional contact with the side walls of the eye by means of only the corners of the handle provides slightly greater than point contact at four spaced locations around the side walls of the eye.
  • the sides of the handle remain spaced from the eye even at this narrowest portion of the eye and in fact throughout their entire length. Additionally, due to the elliptical configuration, the point contact, as shown, is predominantly with the front and rear walls, 24,26 of the eye on opposite sides of the axis of percussion. Thus, in the preferred embodiment illustrated, there is direct and intimate contact between the handle and the walls of the eye at four spaced points all lying within a transverse plane extending through the axis of percussion of the: hammer head. This provides a fulcrum having the versatility of v a universal joint and permitting multidirection adjustment of the striking surface relative to the hammer handle and grip. The properly balanced position of the handle in the head is thus achieved despite the presence of irregularities or variations in the eye or other portions of the striking element or handle.
  • this new and improved adjustableinterconnection between the handle and striking head of the hammer permits application of the resilient grip 34 to the grip portion of the handle prior to mounting the handle in the head. In this way, the exact position of the grip and therefore the position of the users hand is determined prior to connecting the handle to the hammer head.
  • correct positioning of the grip and handle relative to the striking surface or face of the striking element can be accomplished with full assurance that subsequent operations will not disturb the concentric and balanced relationship desired between the striking surface and the handle of the tool.
  • the handle 12 After the handle 12 is driven into the eye of the striking element a sufficient distance so that the forward end thereof has passed well beyond the axis of percussion of the striking element and is positioned adjacent, but preferably recessed from the exit end of the eye, the handle and the striking face can be rotated or otherwise angularly positioned to provide the desired relative positional relationship. Thereafter, in accordance with the preferred embodiment, the grip end of the eye is sealed by placing a bead 38 of sealing material, such as a silicone resin, or the like, in the entrance opening of the eye.
  • a sealing material such as a silicone resin, or the like
  • the handle is fixedly bonded and securely held within the tool head in its adjusted position by filling the entire cavity defined by the walls of the eye and the hammer handle with a suitable impact resistent resinous material, such as an epoxy resin or the like, which upon curing will provide a continuous sleeve 40 both along the entire length of the eye on each side of the handle and fully around the handle at each end of the eye.
  • a suitable impact resistent resinous material such as an epoxy resin or the like
  • the nature of the resin is such that it will readily flow and fill the cavity and provide a sleeve which conforms to the cavity and exhibits a gradually increasing thickness as it extends toward opposite ends of the aperture.
  • a hand tool for percussive use comprising a tool head having a striking surface, an axis of percussion extending through said head from said surface and an aperture spaced from said striking surface and extending entirely through said head in a direction normal to said axis of percussion; said aperture having side walls converging from both ends thereof to provide a portion of reduced cross section having a generally arcuate cross sectional configuration intermediate the ends of said aperture; a handle having a grip end and an opposite end positioned in said aperture a sufficient distance to traverse said portion of reduced cross section, said handle being of rectilinear cross section and having corners tangentially and frictionally engaging said portion of reduced cross section to facilitate balanced positioning of the handle relative to said striking surface; and a plastic sleeve extending continuously along the length of the aperture on each side of the handle and gradually increasing in thickness toward both ends of said aperture to fixedly stabilize said handle within said tool head.
  • the apertures portion of reduced cross section is generally elliptical, the handle being of generally rectangular cross section and the corners of the handle providing an interference fit with said portion of reduced cross section, the handle being free of direct contact with the tool head at both ends of said aperture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
US00307443A 1972-11-17 1972-11-17 Hammer Expired - Lifetime US3792725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30744372A 1972-11-17 1972-11-17

Publications (1)

Publication Number Publication Date
US3792725A true US3792725A (en) 1974-02-19

Family

ID=23189797

Family Applications (1)

Application Number Title Priority Date Filing Date
US00307443A Expired - Lifetime US3792725A (en) 1972-11-17 1972-11-17 Hammer

Country Status (6)

Country Link
US (1) US3792725A (uk)
JP (1) JPS5513869B2 (uk)
AU (1) AU469508B2 (uk)
FR (1) FR2207005B1 (uk)
GB (1) GB1395693A (uk)
ZA (1) ZA738790B (uk)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870091A (en) * 1974-04-23 1975-03-11 Stanley Works Hand tool connection and trim collar therefor
US3874433A (en) * 1973-09-12 1975-04-01 Stanley Works Hand tool connection and trim collar therefor
US4039012A (en) * 1976-01-12 1977-08-02 C. E. S., Inc. Non-rebound hammer
US4227391A (en) * 1979-01-29 1980-10-14 Olin Corporation Process for making tube in sheet heat exchangers
US4352381A (en) * 1980-08-25 1982-10-05 Dasco Products, Inc. Tool head and handle interconnection
US4516615A (en) * 1982-03-01 1985-05-14 Taco Products, Incorporated Tool handle attachment
US5271300A (en) * 1992-07-14 1993-12-21 Snap-On Tools Corporation Composite hand tool
US5314180A (en) * 1989-08-28 1994-05-24 Toray Industries, Inc. Sports instrument and impact-absorbing element to be attached to sports equipment
DE4430372A1 (de) * 1993-12-02 1996-02-29 Lee Chang Chuan Hammer
DE19536388A1 (de) * 1995-09-29 1997-04-03 Bodo Hoppe Hammer
US5713251A (en) * 1995-11-15 1998-02-03 Snap-On Technologies, Inc. Composite box wrench with ratchet module insert
US6202511B1 (en) 1998-08-14 2001-03-20 The Stanley Works Vibration damped hammer
US6363817B1 (en) * 1999-05-05 2002-04-02 General Housewares Corporation Shock absorption system for a striking tool
US6647829B1 (en) 2002-08-07 2003-11-18 Estwing Manufacturing Company Striking tool with weight forward head
US20060021474A1 (en) * 2004-07-28 2006-02-02 Michael Burgess Double headed striking tool
US20090056504A1 (en) * 2007-08-27 2009-03-05 Mitsubishi Materials Corporation Hammer for breaking polycrystalline silicon
US20100139458A1 (en) * 2008-12-09 2010-06-10 Ames True Temper, Inc. Coupling for handle and tool head
DE202011001497U1 (de) 2010-04-24 2011-03-24 Dako Werk Dowidat Kg Hammer, insbesondere Vorschlaghammer
US9168648B2 (en) 2012-12-14 2015-10-27 Stanley Black & Decker, Inc. Vibration dampened hammer
US20160067546A1 (en) * 2014-09-10 2016-03-10 Stanley Russell Hunter, JR. Push-Up Exercise Device
USD763649S1 (en) * 2015-04-22 2016-08-16 Madi, Llc Hammer head
US9731413B1 (en) * 2016-02-04 2017-08-15 M.J. Huner LLC Overstrike protector
USD806494S1 (en) * 2013-03-10 2018-01-02 Hsiu-Hua Chang Hammer head
US20200316763A1 (en) * 2015-08-24 2020-10-08 Stanley Black & Decker, Inc. Hammer tacker
USD996179S1 (en) * 2021-08-20 2023-08-22 Lan Chen Straight pein finishing hammer
USD1005817S1 (en) * 2021-08-20 2023-11-28 Lan Chen Straight pein finishing hammer
USD1011167S1 (en) * 2021-08-20 2024-01-16 Jui Yuan SHIH Hammer
USD1011858S1 (en) * 2021-08-20 2024-01-23 Jui Yuan SHIH Hammer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144069A (en) * 1983-06-10 1985-02-27 Supersafe Fibreglass Tool Hand Hand tool
JPS606485U (ja) * 1983-06-25 1985-01-17 細江　勝 オルゴ−ル付キ−ホルダ−
FR2702175B1 (fr) * 1993-03-05 1995-10-27 Loire Milourd Ets Moulin Blanc Protecteur de manche d'outils de frappe et son procede de montage.

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US222825A (en) * 1879-12-23 Improvement in tool-handles
US1435851A (en) * 1920-04-14 1922-11-14 Isham Harry Stevens Rubberset cushioned implement handle and insert thimble
US2067751A (en) * 1935-03-02 1937-01-12 Raymond E Beegle Securing means for tool handles
US2656225A (en) * 1949-11-16 1953-10-20 Everett G Rodebaugh Hand tool
US2850331A (en) * 1954-09-13 1958-09-02 Fayette R Plumb Inc Handle connection for percussive tool
US2917349A (en) * 1953-12-14 1959-12-15 Saylor Charles Proffer Tool-handle connection with damped resilient bond
US3128131A (en) * 1961-11-02 1964-04-07 Andrew F Bianchini Hammer handle anchoring means
US3172708A (en) * 1963-10-21 1965-03-09 Estwing Mfg Company Inc Hammer with handle fastening means
US3175232A (en) * 1962-05-16 1965-03-30 Stanley Works Percussive tool having improved handle fastening means
US3578825A (en) * 1968-06-26 1971-05-18 Stanley Works Hand tool

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191220226A (en) * 1912-09-05 1913-04-24 James Johnson Miner's Pick Head.
FR569807A (fr) * 1923-08-17 1924-04-18 Dispositif de fixation élastique pour manches d'outils

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US222825A (en) * 1879-12-23 Improvement in tool-handles
US1435851A (en) * 1920-04-14 1922-11-14 Isham Harry Stevens Rubberset cushioned implement handle and insert thimble
US2067751A (en) * 1935-03-02 1937-01-12 Raymond E Beegle Securing means for tool handles
US2656225A (en) * 1949-11-16 1953-10-20 Everett G Rodebaugh Hand tool
US2917349A (en) * 1953-12-14 1959-12-15 Saylor Charles Proffer Tool-handle connection with damped resilient bond
US2850331A (en) * 1954-09-13 1958-09-02 Fayette R Plumb Inc Handle connection for percussive tool
US3128131A (en) * 1961-11-02 1964-04-07 Andrew F Bianchini Hammer handle anchoring means
US3175232A (en) * 1962-05-16 1965-03-30 Stanley Works Percussive tool having improved handle fastening means
US3172708A (en) * 1963-10-21 1965-03-09 Estwing Mfg Company Inc Hammer with handle fastening means
US3578825A (en) * 1968-06-26 1971-05-18 Stanley Works Hand tool

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874433A (en) * 1973-09-12 1975-04-01 Stanley Works Hand tool connection and trim collar therefor
US3870091A (en) * 1974-04-23 1975-03-11 Stanley Works Hand tool connection and trim collar therefor
US4039012A (en) * 1976-01-12 1977-08-02 C. E. S., Inc. Non-rebound hammer
US4227391A (en) * 1979-01-29 1980-10-14 Olin Corporation Process for making tube in sheet heat exchangers
US4352381A (en) * 1980-08-25 1982-10-05 Dasco Products, Inc. Tool head and handle interconnection
US4516615A (en) * 1982-03-01 1985-05-14 Taco Products, Incorporated Tool handle attachment
US5421574A (en) * 1989-08-28 1995-06-06 Toray Industries, Inc. Sports instrument and impact-absorbing element to be attached to sports instrument
US5314180A (en) * 1989-08-28 1994-05-24 Toray Industries, Inc. Sports instrument and impact-absorbing element to be attached to sports equipment
US5271300A (en) * 1992-07-14 1993-12-21 Snap-On Tools Corporation Composite hand tool
DE4430372A1 (de) * 1993-12-02 1996-02-29 Lee Chang Chuan Hammer
DE19536388A1 (de) * 1995-09-29 1997-04-03 Bodo Hoppe Hammer
US5713251A (en) * 1995-11-15 1998-02-03 Snap-On Technologies, Inc. Composite box wrench with ratchet module insert
US6202511B1 (en) 1998-08-14 2001-03-20 The Stanley Works Vibration damped hammer
EP1105255B1 (en) * 1998-08-14 2003-11-19 The Stanley Works Vibration damped hammer
US6363817B1 (en) * 1999-05-05 2002-04-02 General Housewares Corporation Shock absorption system for a striking tool
US7404346B2 (en) 2002-08-07 2008-07-29 Estwing Manufacturing Company Striking tool with weight forward head
US6647829B1 (en) 2002-08-07 2003-11-18 Estwing Manufacturing Company Striking tool with weight forward head
US6976406B2 (en) 2002-08-07 2005-12-20 Estwing Manufacturing Company Striking tool with weight forward head
US20050279189A1 (en) * 2002-08-07 2005-12-22 Estwing Manufacturing Company Striking tool with weight forward head
US20060021474A1 (en) * 2004-07-28 2006-02-02 Michael Burgess Double headed striking tool
US20090056504A1 (en) * 2007-08-27 2009-03-05 Mitsubishi Materials Corporation Hammer for breaking polycrystalline silicon
US7950308B2 (en) * 2007-08-27 2011-05-31 Mitsubishi Materials Corporation Hammer for breaking polycrystalline silicon
CN101376242B (zh) * 2007-08-27 2012-11-14 三菱麻铁里亚尔株式会社 多晶硅破碎用锤
US20100139458A1 (en) * 2008-12-09 2010-06-10 Ames True Temper, Inc. Coupling for handle and tool head
DE202011001497U1 (de) 2010-04-24 2011-03-24 Dako Werk Dowidat Kg Hammer, insbesondere Vorschlaghammer
EP2380706A1 (de) * 2010-04-24 2011-10-26 Dako Werk Dowidat KG Hammer, insbesondere Vorschlaghammer, und Verfahren zur Herstellung eines sochen Hammers
EP2743037A3 (en) * 2012-12-14 2018-02-28 Stanley Black & Decker, Inc. Vibration dampened hammer
US9168648B2 (en) 2012-12-14 2015-10-27 Stanley Black & Decker, Inc. Vibration dampened hammer
USD806494S1 (en) * 2013-03-10 2018-01-02 Hsiu-Hua Chang Hammer head
US20160067546A1 (en) * 2014-09-10 2016-03-10 Stanley Russell Hunter, JR. Push-Up Exercise Device
US9750975B2 (en) * 2014-09-10 2017-09-05 Stanley Russell Hunter, JR. Push-up exercise device
USD763649S1 (en) * 2015-04-22 2016-08-16 Madi, Llc Hammer head
US20200316763A1 (en) * 2015-08-24 2020-10-08 Stanley Black & Decker, Inc. Hammer tacker
US11766772B2 (en) * 2015-08-24 2023-09-26 Stanley Black & Decker, Inc. Hammer tacker
US9731413B1 (en) * 2016-02-04 2017-08-15 M.J. Huner LLC Overstrike protector
USD996179S1 (en) * 2021-08-20 2023-08-22 Lan Chen Straight pein finishing hammer
USD1005817S1 (en) * 2021-08-20 2023-11-28 Lan Chen Straight pein finishing hammer
USD1011167S1 (en) * 2021-08-20 2024-01-16 Jui Yuan SHIH Hammer
USD1011858S1 (en) * 2021-08-20 2024-01-23 Jui Yuan SHIH Hammer

Also Published As

Publication number Publication date
JPS49135277A (uk) 1974-12-26
FR2207005A1 (uk) 1974-06-14
AU469508B2 (en) 1976-02-12
AU6261973A (en) 1975-05-22
JPS5513869B2 (uk) 1980-04-11
FR2207005B1 (uk) 1977-06-03
GB1395693A (en) 1975-05-29
ZA738790B (en) 1974-10-30

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