US3845960A - Weight-balanced golfing iron - Google Patents

Weight-balanced golfing iron Download PDF

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Publication number
US3845960A
US3845960A US00368641A US36864173A US3845960A US 3845960 A US3845960 A US 3845960A US 00368641 A US00368641 A US 00368641A US 36864173 A US36864173 A US 36864173A US 3845960 A US3845960 A US 3845960A
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United States
Prior art keywords
head
elongated
plug
heel
toe
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Expired - Lifetime
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US00368641A
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English (en)
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S Thompson
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Individual
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Individual
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Priority to US00368641A priority Critical patent/US3845960A/en
Priority to JP49066425A priority patent/JPS5036232A/ja
Priority to US05/510,111 priority patent/US3961796A/en
Application granted granted Critical
Publication of US3845960A publication Critical patent/US3845960A/en
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Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/005—Club sets
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/047—Heads iron-type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0433—Heads with special sole configurations

Definitions

  • This invention relates generally to golfing irons, and more particularly concerns the construction and rapid production of such golf clubs in a manner to facilitate balancing of different irons in a set, thereby to form a matched set.
  • the head of the iron is provided with an elongated opening extending within a base portion between the toe and heel; an elongated balancing plug extending within that opening; a relatively short plug also extends within the opening and is spaced from the elongated plug, and a selected amount of weighting material is received or placed in that space during the final balancing step.
  • Such material may, for example, consist of a heavy metal powder such as tungsten, and the elongated balancing plug may consist of a metal substantially less dence than the head metal, as for example aluminum.
  • the retainer plug may retain the elongated plug in a counterbore and against a counterbore shoulder, and the short plug may be received in a bore near the heel of the head, so that the weighting material or powder is also located near the heel, as will be seen.
  • the method of producing the balanced iron typically involves the steps of forming a wax replica of the head and embedding a ceramic core in the base portion of the replica, that core having the configuration of the described bore and counterbore; forming a ceramic mold about the replica and curing same at elevated temperature to also melt out the wax; pouring molten head metal into the mold cavity and removing the mold after cooling of the metal head; removing the core from the head, as by acid etching; introducing an elongated lightweight metal balancing plug and a heavy metal powder into different interior portions of the opening and plugging the opening at its opposite ends. Different length balancing plugs may be used for different irons of a set to match or equalize their weights, and fine or accurate balance may be achieved by controlled introduction of the heavy metal powder, during the balancing procedure.
  • DRAWING DESCRIPTION F IG. 1 is a rear side elevation of the head of a golfing iron embodying the invention
  • FIG. 2 is a toe end elevation of the FIG. 1 head
  • FIG. 3 is a front side elevation of the FIG. 1 head, the lower portion of which is cut away to show interior structure;
  • FIG. 4' is a section taken on lines 4-4 of FIG. 1;
  • FIG. 5 is a section taken on lines 5-5 of FIG. 1;
  • FIG. 6 is a view like FIG. 3 but showing the head at a stage during its manufacture
  • FIG. 7 is a toe end elevation of the FIG. 6 head
  • FIG.,8 is a block diagram showing a sequence of steps in the club head fabrication process.
  • FIG. 9 is an elevation showing balancing of the club.
  • the metallic head 10 of an upright golf club iron 9 includes a hosel ll, toe l2 and heel 13, a front face 14 to strike a golf ball, a rear side 15 recessed at 16, and a base portion I7 the bottom 17a of which is flat in the lateral direction viewed in FIG. 4, and longitudinally convex, downwardly.
  • Front face 14 has an inclination a from a vertical plane which may vary as required for the intended use of the iron; thus, the illustrated iron is intended to represent any of the irons that a golfer might use, and including Nos. 1 to 9, wedge, putter, etc.
  • an elongated through opening extends generally longitudinally within the base portion 17 between the heel and toe, that opening defined by a relatively short bore 18 proximate the heel and a relatively long counterbore 19.
  • the latter may typically extend between the bore 18 and the toe 12, as best seen in FIG. 3.
  • An elongated plug 20 extends within the counterbore 19 to provide balancing, different length plugs being used for different irons in a set, to provide coarse" equalization of weight.
  • Plug 20 is held in place abutting the counterbore shoulder 21 by a short retainer plug 22 having threaded connection with a tapped section 19a of the counterbore, and a suitable hardenable fill material 23 fills the counterbore space between plug 22 and the curvature at which the toe l2 merges with the base lower face 17a.
  • Material 23 may consist of metal powder in a hardenable carrier resin such as an epoxide, or an equivalent substance.
  • Plug 20 may be of a material (as for example aluminum) substantially less dense than the steel metal of the club head.
  • a relatively short plug 24 is threaded into a tapped section 18a of the bore 18, and sealed in position by hardenable fill material 25 (of a composition similar to that of material 23, for example).
  • the space 26 formed in the bore 18 between plugs 20 and 24 is of a predetermined size, and is adapted to receive an amount of heavy metal powder 27 (as for example tungsten) for fine weight balancing purposes, as will appear.
  • a precise amount of such powder is inserted into space 26 prior to insertion of the plug 24 and fill material 23.
  • Space 26 is of a length substantially less than the length of plug 20, and has a volume such that it is normally only partly filled with sufficient weighting material 27 needed for balancing.
  • the coarse and fine balancing means 20 and 27 also serve to lighten the weight of the club head as well as to enable accurate and rapid balancing as required to match" a set of irons.
  • the recess 16 which contributes to the light weight characteristics of the head, is directly above the base portion I7 that contains the plug 20.
  • the inner wall 16a of the recess and the front face 14 define therebetween a relatively thin plate 28 which receives the direct impact developed when the head strikes the golf ball.
  • I-losel Ill includes an elongated stem 11a which contains an elongated bore 29, the latter also contributing to reduction of head weight.
  • the stem is attached to the club shaft 30 as by a telescopic interfit of the shaft end over the stem, at 30a in FIG. 1.
  • the head may be fabricated, with unusual advantage, in accordance with steps outlined in FIGS. 6-8, described as follows: initially, a wax impression 35 of the head is made as seen in FIG. 6, the bore and counterbore 36 and 37 (corresponding to bore 18 and counterbore 19) are formed in the wax, and a ceramic insert or core 38 is implaced to extend in the bore and counterbore 36 and 37.
  • One suitable ceramic consists of fused silica (94 percent by weight) and alumina (6 percent by weight), a product of American Lava, and of Fibeco. Inc. These steps are indicated at 39 in FIG. 8.
  • a ceramic mold is formed about the wax impression, as indicated at 40 in FIG. 8.
  • step 42 molten steel is poured into the mold cavity, as via the entrance formed by wax protrusion 43, the steel enveloping the plug 38. After cooling, the mold is broken off and the plug is removed as by an etch, a suitable etchant being sodium hydroxide applied at about l,I00F for about 1 hour. This final step is indicated at 44 in FIG. 8.
  • FIG. 9 illustrates balancing of the club as by supporting it at the handle, as by the bracket 46 and on a fulchrum 4'7, and at the head end at 48.
  • Metal powder is poured at'49 into the space 26 until a plunger on a preset scales 50 is deflected downwardly, indicating that balance in relation to other irons has been achieved.
  • a metallic club head having a toe and heel, a front face to strike a golf ball, a rear side, the head having an elongated base portion extending between the toe and heel,
  • a relatively short plug extending within the opening and spaced from the elongated plug for reception therebetween of a selected amount of weighting material in the form of metal particles having a density substantially greater than the density of the head metal, said elongated plug consisting of a metal substantially less dense than the head metal,
  • a metallic club head having a toe and heel, a front face to strike a golf ball, a rear side, the head having an elongated base portion extending between the toe and heel,
  • a relatively short plug extending within the opening and spaced from the elongated plug for reception therebetween of a selected amount of weighting material in the form of metal powder having a density substantially greater than the density of the head metal, said elongated plug consisting of a metal substantially less dense than the'density of the head metal,
  • said opening being defined by a bore receiving the short plug at the heel end of the head, and a counterbore receiving the elongated plug.
  • the golf iron of claim 2 including a retainer plug in the counterbore retaining the elongated plug in endto-end relation with a counterbore shoulder formed be tween the bore and counterbore.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
US00368641A 1973-06-11 1973-06-11 Weight-balanced golfing iron Expired - Lifetime US3845960A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US00368641A US3845960A (en) 1973-06-11 1973-06-11 Weight-balanced golfing iron
JP49066425A JPS5036232A (enrdf_load_stackoverflow) 1973-06-11 1974-06-11
US05/510,111 US3961796A (en) 1973-06-11 1974-09-27 Golfing iron head with downwardly tapered keel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00368641A US3845960A (en) 1973-06-11 1973-06-11 Weight-balanced golfing iron

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/510,111 Continuation-In-Part US3961796A (en) 1973-06-11 1974-09-27 Golfing iron head with downwardly tapered keel

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US3845960A true US3845960A (en) 1974-11-05

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JP (1) JPS5036232A (enrdf_load_stackoverflow)

Cited By (83)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897066A (en) * 1973-11-28 1975-07-29 Peter A Belmont Golf club heads and process
US3979122A (en) * 1975-06-13 1976-09-07 Belmont Peter A Adjustably-weighted golf irons and processes
US4058312A (en) * 1974-09-05 1977-11-15 The Square Two Golf Corporation Golf club
US4128242A (en) * 1975-11-11 1978-12-05 Pratt-Read Corporation Correlated set of golf clubs
US4145052A (en) * 1977-05-03 1979-03-20 Janssen Robert L Golfing iron with weight adjustment
JPS54121066U (enrdf_load_stackoverflow) * 1978-02-13 1979-08-24
USD276644S (en) 1982-09-29 1984-12-04 Karsten Solheim Golf club head
US4756534A (en) * 1985-01-14 1988-07-12 Thompson Stanley C Golf club
US4992236A (en) * 1990-01-16 1991-02-12 Shira Chester S Method of making a golf club head and the article produced thereby
US5011151A (en) * 1989-09-06 1991-04-30 Antonious A J Weight distribution for golf club head
US5026056A (en) * 1987-09-15 1991-06-25 Tommy Armour Golf Company Weight-balanced golf club set
USD318512S (en) 1988-10-13 1991-07-23 The Ben Hogan Company Golf club head
US5062638A (en) * 1990-01-16 1991-11-05 Shira Chester S Method of making a golf club head and the article produced thereby
US5120062A (en) * 1990-07-26 1992-06-09 Wilson Sporting Goods Co. Golf club head with high toe and low heel weighting
US5217227A (en) * 1990-10-26 1993-06-08 Shira Chester S Method of making a golf club head using a ceramic mold and the article produced thereby
USD336758S (en) 1991-05-30 1993-06-22 Ryobi-Toski Corporation Golf club head
US5224705A (en) * 1990-07-26 1993-07-06 Wilson Sporting Goods Co. Golf club head with high toe and low heel weighting
US5356138A (en) * 1993-09-27 1994-10-18 Pro Sports, U.S.A. Dual weight golf club set
US5409219A (en) * 1993-07-01 1995-04-25 Saksun, Sr.; John Weighted golf club head
US5433444A (en) * 1993-10-22 1995-07-18 Chiuminatta; Alan R. Targeting putter
USD364433S (en) 1993-10-26 1995-11-21 Edward Chiuminatta Golf putter head
USD366509S (en) 1994-03-03 1996-01-23 Edward Chiuminatta Golf putter head
USD370517S (en) 1995-03-15 1996-06-04 Butler Jr Joseph H Golf device
US5669825A (en) * 1995-02-01 1997-09-23 Carbite, Inc. Method of making a golf club head and the article produced thereby
US6012989A (en) * 1997-10-22 2000-01-11 Saksun, Sr.; John Golf club head
US6290607B1 (en) 1999-04-05 2001-09-18 Acushnet Company Set of golf clubs
US6306048B1 (en) 1999-01-22 2001-10-23 Acushnet Company Golf club head with weight adjustment
US6482104B1 (en) 1999-04-05 2002-11-19 Acushnet Company Set of golf clubs
US6702693B2 (en) 1994-03-15 2004-03-09 Pelican Golf, Inc. Perimeter weighted golf clubs
US20050009626A1 (en) * 2003-07-03 2005-01-13 Bridgestone Sports Co., Ltd. Iron golf club head
US20050054458A1 (en) * 2003-09-05 2005-03-10 Chen Ming T. Tri-weight correlated set of iron type golf clubs
US6923734B2 (en) 2003-04-25 2005-08-02 Jas. D. Easton, Inc. Golf club head with ports and weighted rods for adjusting weight and center of gravity
US20050261074A1 (en) * 2004-05-19 2005-11-24 Andersen Thomas A Golf swing trainer
US20060183567A1 (en) * 2005-02-14 2006-08-17 Acushnet Company Golf club head with integrally attached weight members
CN100339140C (zh) * 2005-01-25 2007-09-26 超威科技股份有限公司 具有可调整配重位置及重量的高尔夫球头
US20070270235A1 (en) * 2006-05-17 2007-11-22 Simon Chu Yuk Man Golf Club Head and Method for Making the Same
US7410424B2 (en) 2003-09-05 2008-08-12 Ming Chen Tri-weight correlated set of iron type golf clubs
US20090111606A1 (en) * 2006-01-12 2009-04-30 Ilir Bardha Golf club with plural alternative impact surfaces
US20090156324A1 (en) * 2007-12-12 2009-06-18 Cole Eric V Golf club with cavity, and method of manufacture
US7815524B2 (en) 2005-02-17 2010-10-19 Pelican Golf, Inc. Golf clubs
US20100304887A1 (en) * 2009-05-28 2010-12-02 Acushnet Company Golf club head having variable center of gravity location
US20100304890A1 (en) * 2009-05-29 2010-12-02 Aaron Dill Wedge type golf club head
US20100304883A1 (en) * 2009-05-29 2010-12-02 Gilbert Peter J Wedge type golf club head
US20120252597A1 (en) * 2011-04-01 2012-10-04 Thomas James S Golf club assembly and golf club with aerodynamic features
US8821311B2 (en) 2009-05-13 2014-09-02 Nike, Inc. Golf club assembly and golf club with aerodynamic features
US20150065265A1 (en) * 2013-08-29 2015-03-05 Dunlop Sports Co. Ltd. Golf club head
US20150119164A1 (en) * 2011-11-28 2015-04-30 Acushnet Company Co-forged golf club head and method of manufacture
US20150238824A1 (en) * 2014-02-27 2015-08-27 Karsten Manufacturing Corporation Systems to custom fit golf clubs and methods of providing the same
US9211450B2 (en) 2009-05-29 2015-12-15 Acushnet Company Wedge type golf club head
US9220959B2 (en) 2012-08-02 2015-12-29 Cobra Golf Incorporated Golf club with cellular mass distribution
US20160089581A1 (en) * 2011-11-28 2016-03-31 Acushnet Company Co-forged golf club head and method of manufacture
US9314677B2 (en) 2009-05-13 2016-04-19 Nike, Inc. Golf club assembly and golf club with aerodynamic features
US9370696B2 (en) 2009-05-13 2016-06-21 Nike, Inc Golf club assembly and golf club with aerodynamic features
US9375617B2 (en) 2009-05-13 2016-06-28 Nike, Inc Golf club assembly and golf club with aerodynamic features
USD762792S1 (en) 2015-02-12 2016-08-02 Acushnet Company Wedge golf club head
USD773574S1 (en) 2015-02-12 2016-12-06 Acushnet Company Wedge golf club set
US9526954B2 (en) 2012-05-31 2016-12-27 Nike, Inc. Golf club assembly and golf club with aerodynamic features
US20170182385A1 (en) * 2011-11-28 2017-06-29 Acushnet Company Co-forged golf club head and method of manufacture
US9713751B2 (en) 2009-05-29 2017-07-25 Acushnet Company Wedge type golf club head
US20170282026A1 (en) * 2014-08-25 2017-10-05 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US20170348570A1 (en) * 2014-05-13 2017-12-07 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US20170368429A1 (en) * 2014-02-20 2017-12-28 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
USD829837S1 (en) 2017-03-01 2018-10-02 Acushnet Company Wedge golf club
US10220275B2 (en) 2011-11-28 2019-03-05 Acushnet Company Co-forged golf club head and method of manufacture
US10391370B2 (en) 2011-11-28 2019-08-27 Acushnet Company Co-forged golf club head and method of manufacture
WO2020219987A1 (en) 2019-04-26 2020-10-29 Karsten Manufacturing Corporation Forged iron head
US11065513B2 (en) 2011-11-28 2021-07-20 Acushnet Company Set of golf club heads and method of manufacture
US11117030B2 (en) 2014-02-20 2021-09-14 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US11167187B2 (en) 2014-02-20 2021-11-09 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US11192003B2 (en) 2017-11-03 2021-12-07 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US11344775B2 (en) 2014-02-20 2022-05-31 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US11351427B1 (en) * 2021-03-12 2022-06-07 Acushnet Company Hollow co-molded iron with inner lightweight portion
US11426640B2 (en) 2017-11-03 2022-08-30 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US11458372B2 (en) 2014-02-20 2022-10-04 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
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US11794081B2 (en) 2014-02-20 2023-10-24 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US11918867B2 (en) 2011-11-28 2024-03-05 Acushnet Company Co-forged golf club head and method of manufacture
US12290724B2 (en) 2014-02-20 2025-05-06 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads
US12311239B2 (en) 2014-02-20 2025-05-27 Parsons Xtreme Golf, LLC Golf club heads and methods to manufacture golf club heads

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JPS5457457A (en) * 1977-10-18 1979-05-09 Fujikura Ltd Manufacture of aluminum-copper composite wire
JPS58152963U (ja) * 1982-04-06 1983-10-13 株式会社荘大商会 ゴルフ用アイアンクラブのヘツド
JP2018094125A (ja) * 2016-12-14 2018-06-21 基宏 蘇 一体型複合材からなる鍛造製のゴルフクラブヘッド

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GB189405368A (en) * 1894-03-14 1894-04-14 Malcolm Drummond Improvements in Golf Clubs.
US645942A (en) * 1899-11-29 1900-03-27 Spalding & Bros Ag Golf-club.
GB190920792A (en) * 1909-09-11 1910-09-08 Riddell Gordon Carringt Smythe Improvements in and connected with Golf Clubs.
US1453503A (en) * 1921-08-08 1923-05-01 Thomas J Holmes Golf club
GB194823A (en) * 1921-12-23 1923-03-22 James Hamilton Stirling Improvements in or relating to golf clubs and the like
GB252995A (en) * 1925-11-25 1926-06-10 Arnold William Miller Improvements in and relating to golf clubs
US1644177A (en) * 1927-08-05 1927-10-04 William R Collins Adjustable golf club
GB347502A (en) * 1930-05-19 1931-04-30 James Geoffrey Gill Improvements in or relating to golf clubs
US1983196A (en) * 1931-08-13 1934-12-04 William C Spiker Golf club
US2328583A (en) * 1941-05-17 1943-09-07 Milton B Reach Golf club
US2363991A (en) * 1942-02-13 1944-11-28 Milton B Reach Golf club
US2998254A (en) * 1959-11-19 1961-08-29 Rains David Golf putter
US3266805A (en) * 1962-01-25 1966-08-16 Stewart S Freedman Golf club head
US3606327A (en) * 1969-01-28 1971-09-20 Joseph M Gorman Golf club weight control capsule
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Cited By (129)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897066A (en) * 1973-11-28 1975-07-29 Peter A Belmont Golf club heads and process
US4058312A (en) * 1974-09-05 1977-11-15 The Square Two Golf Corporation Golf club
US3979122A (en) * 1975-06-13 1976-09-07 Belmont Peter A Adjustably-weighted golf irons and processes
US4128242A (en) * 1975-11-11 1978-12-05 Pratt-Read Corporation Correlated set of golf clubs
US4145052A (en) * 1977-05-03 1979-03-20 Janssen Robert L Golfing iron with weight adjustment
JPS54121066U (enrdf_load_stackoverflow) * 1978-02-13 1979-08-24
USD276644S (en) 1982-09-29 1984-12-04 Karsten Solheim Golf club head
US4756534A (en) * 1985-01-14 1988-07-12 Thompson Stanley C Golf club
US5026056A (en) * 1987-09-15 1991-06-25 Tommy Armour Golf Company Weight-balanced golf club set
USD318512S (en) 1988-10-13 1991-07-23 The Ben Hogan Company Golf club head
US5011151A (en) * 1989-09-06 1991-04-30 Antonious A J Weight distribution for golf club head
US4992236A (en) * 1990-01-16 1991-02-12 Shira Chester S Method of making a golf club head and the article produced thereby
US5062638A (en) * 1990-01-16 1991-11-05 Shira Chester S Method of making a golf club head and the article produced thereby
US5120062A (en) * 1990-07-26 1992-06-09 Wilson Sporting Goods Co. Golf club head with high toe and low heel weighting
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