Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS1568888 A
Publication typeGrant
Publication dateJan 5, 1926
Filing dateApr 4, 1925
Publication numberUS 1568888 A, US 1568888A, US-A-1568888, US1568888 A, US1568888A
InventorsWilliam Dunn
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
William dunn
US 1568888 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

. Jan. 5

W. DUNN I Filed April 4, 1925 5 Clara, and State of California, have in-' Patented Jan. 5, 1926.

WILLIAM DUNN, 0F PALO ALTO, CALIFORNIA.

GOLF CLUB.

Application filed April 4, 1925. Serial No. 20,670.

To all whom it may concern:

Be it known that L'VVILLIAM DUNN, a subject of the King of Great Britain, and a resident of Palo Alto, county of Santa vented a certain new and useful Golf Club, of which the following is a specification.

The invention relates to golf clubs and particularly to the heads of golf clubs.

An object of the invention is to provide a hollow, metallic golf clubv head which will have the same feel in the hand and the same balance as a club provided with the usual wooden head.

Another object of the invention is to provide a hollow metallic golf club head in which the mass of the metal is concentrated behind the center of the striking face of the club, so that tendency toward hooking or slicing is eliminated.

Another object'of the invention is to provide a hollow metallic golf club head which may be filled with liquid to increase the weight of the head.

A further object of the invention is so to position the mass of the back wall of the head that the tendency of the club to twist, when the ball is notstruck exactly at the center of the driving face, is greatly reduced or eliminated.

The invention possesses other advantageous features, some of which with the foregoing, will be set forth at length in the following description, where I shall out-line that form of the invention which I have selected for illustration in the drawings accompanying and forming part of the present specification. In said drawings I have shown two forms of hollow golf club heads embodying my invention, but it is to be understood that I do not limit myself to such forms, since the invention as set forth in the claim may be embodied in a plurality of forms.

Referring to said drawings: Figure 1 is a perspective view of a gol club head embodying my invention, the shaft being broken away.

Figure 2 is a vertical transverse section of the golf club head taken in the vertical plane containing the line 2-2 Figure 1.

Figure 3 is a horizontal section of the golf club head taken in the horizontal plane containing'the line 33 Figure 1. v

Figure 4 is a section, taken on the same planeas Figure 3, through a modified form of, golf club head.

Figure 5 is a section taken on the vertical plane containing the line 55 Figure 1.

My invention relates to a hollow metallic golf club head 6, which is formed with a. closed cavity therein. The head is provided with an integral hollow neck 7 into which.

the shaft 8 extends, the sole or bottom 10 of the club head being provided with an .aperture in alinement with the axis of the neck into which the end of the shaft extends and in which it is suitably secured.

The head is provided with a front wall 9, the outer surface of which constitutes the striking surface of the club. The wall 9 is integral with the remainder of the head and is preferably somewhat thicker than the sole 10 or the top wall 11. The front wall is also preferably thicker than the walls at the heel and toe of the club. The back wall 12 of the club head is formed to concentrate a mass of metal directly behind the center of the striking face of the club head, so that as the club is swung against the ball, contact with the ball at either side of the center of the strikng face, will not cause the club to twist in such manner as to hook or slice the ball. This is accomplished by thickening the back wall 12 of the head by the addition of a thickened portion or bulge 13. which increases in thickness from its ends to the plane of the center of the striking face 9, this plane being indicated by the line 14. The back wall 12 and the bulge 13 are symmetrical with respect to the vertical plane of the line 14: and the mass of the back wall is concentrated adjacent the plane of the line 14, so that the center of gravity of the club will lie directly behind the center of the striking face 9. The front wall 16 of the pad 13 is preferably parallel to the striking face 9, so that the center of mass, considered vertically, of the club head is substantially directly behind the spot on the striking face by which the ball is hit when struck properly. This places the center of gravity of the club directly behind the ball in the line of movement of the club head, so that there is no tendency of the club head to twist, either to smother or loft the ball when it is somewhat improperly struck.

The front face of the pad 13 may lie in a straight line, as shown in Figure 3, or may be a curved line as shown in Figure 4:, in which the pad 15, which comprises the integral thickening of the rear' wall, has a curved front face 18 which produces a greater concentration of the mass adjacent the vertical plane passing through the center of the striking taco. By concentrating the weight directly behind the center of the striking face, the tendency of the club head to turn as a ball is improperly struck, is greatly reduced. lVhether the ball is struck on the heel or the toe of the striking face, the position of the mass of the head is so placed that the club head tends to follow through in its proper line of movement and is not twisted by improper impact against the ball.

When desired, the weight of the head may be increased by filling the cavity therein with Water and, for this purpose, I have provided an aperture, preferably in the toe of the club, which is closed by a plug 17, preferably of the screw threaded variety. \Vhen it is desired to increase the weight of the head, the plug 17 may be removed and liquid poured into the head and the plug replaced.

I have found that With a hollow golf club head constructed as disclosed herein, a good golf player will lengthen his drive approximately yards. This is due, in my opinion, to the resiliency of the club head, its perfect balance and the distribution of the metal in the head.

I claim:

A, golf club head comprising a hollow metal body cast as a complete integral structure and having a front striking face, and arear wall being thickened to constitute a substantial portion of the total weight of said head, the mass of said rear wall being symmetrically disposed with relation to a vertical plane normal to and bisecting said striking face, the remainder of the walls of said head being relatively lighter in construction compared to said rear wall.

In testin'iony whereof, I have hereunto set my hand.

WILLIAM DU NN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2705147 *Jan 29, 1952Mar 29, 1955Winter Charles VAdjustable golf club
US4214754 *Jan 25, 1978Jul 29, 1980Pro-Patterns Inc.Metal golf driver and method of making same
US4432549 *Jan 26, 1979Feb 21, 1984Pro-Pattern, Inc.Metal golf driver
US4715606 *Nov 29, 1985Dec 29, 1987Alan VarleyGolf club with head weight control device
US5004241 *Mar 5, 1990Apr 2, 1991Antonious A JMetal wood type golf club head with integral upper internal weighted mass
US5172913 *Nov 12, 1991Dec 22, 1992Harry BouquetMetal wood golf clubhead assembly
US5178392 *Jan 31, 1991Jan 12, 1993Taylor Made Golf Company, Inc.Golf club head
US5184823 *Nov 23, 1990Feb 9, 1993Taylor Made Golf Company, Inc.Golf club and golf club head
US5213328 *Jan 23, 1992May 25, 1993Macgregor Golf CompanyReinforced metal golf club head
US5217227 *Dec 6, 1991Jun 8, 1993Shira Chester SMethod of making a golf club head using a ceramic mold and the article produced thereby
US5222734 *Nov 22, 1991Jun 29, 1993Callaway Golf CompanyIron golf club heads
US5240252 *Jan 15, 1992Aug 31, 1993Callaway Golf CompanyHollow, metallic golf club head with relieved sole and dendritic structure
US5280923 *Sep 11, 1992Jan 25, 1994Lu Clive SGolf club design
US5292129 *Mar 8, 1993Mar 8, 1994Macgregor Golf CompanyReinforced metal golf club head
US5301941 *May 13, 1992Apr 12, 1994Vardon Golf Company, Inc.Golf club head with increased radius of gyration and face reinforcement
US5301945 *Mar 11, 1993Apr 12, 1994Callaway Golf CompanyHollow, metallic golf club head with relieved sole and dendritic structure
US5320347 *Apr 5, 1993Jun 14, 1994Callaway Golf CompanyIron golf club heads
US5451056 *Aug 11, 1994Sep 19, 1995Hillerich And Bradsby Co., Inc.Metal wood type golf club
US5460376 *Jun 29, 1994Oct 24, 1995Callaway Golf CompanyHollow, large, metallic, golf club head
US5470068 *Jan 18, 1994Nov 28, 1995Callaway Golf CompanyGolf putter with dished bottom surfaces
US5470069 *Apr 12, 1994Nov 28, 1995Callaway Golf CompanyHollow, metallic golf club head with relieved sole and dendritic structure
US5480152 *Jan 6, 1994Jan 2, 1996Callaway Golf CompanyHollow, metallic golf club head with relieved sole and dendritic structure
US5489097 *Dec 5, 1994Feb 6, 1996Alien Sport, Inc.Golf club head with weights
US5582553 *Jul 5, 1994Dec 10, 1996Goldwin Golf U.S.A., Inc.Golf club head with interlocking sole plate
US5601500 *May 6, 1993Feb 11, 1997Shipley; Barry E.Golf putter head
US5611741 *Oct 19, 1995Mar 18, 1997Callaway Golf CompanyHollow, large, metallic, golf club head
US5632693 *Nov 7, 1995May 27, 1997Painter; Paul W.Golf club having selectively adjustable internal pressure
US5697853 *Nov 20, 1995Dec 16, 1997Callaway Golf CompanyHollow, metallic golf club head with relieved sole and dendritic structure
US5785605 *Jan 11, 1996Jul 28, 1998Callaway Golf CompanyHollow, metallic golf club head with configured medial ridge
US5788584 *Jul 5, 1994Aug 4, 1998Goldwin Golf U.S.A., Inc.Golf club head with perimeter weighting
US5839975 *Oct 15, 1997Nov 24, 1998Black Rock Golf CorporationArch reinforced golf club head
US5911638 *Jul 5, 1994Jun 15, 1999Goldwin Golf Usa, Inc.Golf club head with adjustable weighting
US6007433 *Apr 2, 1998Dec 28, 1999Callaway Golf CompanySole configuration for golf club head
US6027416 *Dec 9, 1997Feb 22, 2000Callaway Golf CompanyHollow, metallic golf club head with relieved sole and dendritic structure
US6162133 *Nov 3, 1997Dec 19, 2000Peterson; LaneGolf club head
US6165077 *Nov 11, 1999Dec 26, 2000Callaway Golf CompanySole configuration for golf club head
US6305063Jul 30, 1996Oct 23, 2001Danny AshcraftMethod of manufacturing a golf club head
US6339869 *Oct 9, 2000Jan 22, 2002Lane PetersonMethod of making a golf club head
US7166038 *Jul 26, 2005Jan 23, 2007Callaway Golf CompanyGolf club head
US7189169Dec 20, 2005Mar 13, 2007Dogleg Right CorporationCustomizable center-of-gravity golf club head
US7264558 *Apr 11, 2005Sep 4, 2007Karsten Manufacturing CorporationGolf club head with filler material
US7278927Jan 15, 2007Oct 9, 2007Callaway Golf CompanyGolf club head
US7291075Jan 19, 2007Nov 6, 2007Callaway Golf CompanyGolf club head
US7316624 *Jul 29, 2005Jan 8, 2008Karsten Manufacturing CorporationGolf club head for a hybrid golf club
US7344450Aug 24, 2006Mar 18, 2008Dogleg Right CorporationMethod for adjusting the center of gravity of a golf club head
US7407448Oct 5, 2007Aug 5, 2008Callaway Golf CompanyGolf club head
US7410425Dec 28, 2006Aug 12, 2008Taylor Made Golf Company, Inc.Golf club head having removable weight
US7410426Dec 29, 2006Aug 12, 2008Taylor Made Golf Company, Inc.Golf club head having removable weight
US7452285Dec 28, 2006Nov 18, 2008Taylor Made Golf Company, Inc.Weight kit for golf club head
US7455598Oct 8, 2007Nov 25, 2008Callaway Golf CompanyGolf club head
US7470200Nov 16, 2007Dec 30, 2008Karsten Manufacturing CorporationGolf club head for a hybrid gold club
US7476161Oct 8, 2007Jan 13, 2009Callaway Golf CompanyGolf club head
US7488261Oct 4, 2007Feb 10, 2009Callaway Golf CompanyGolf club with high moment of inertia
US7494424Oct 8, 2007Feb 24, 2009Callaway Golf CompanyGolf club head
US7549935Sep 29, 2008Jun 23, 2009Callaway Golf CompanyGolf club head
US7559851Jul 20, 2006Jul 14, 2009Callaway Golf CompanyGolf club with high moment of inertia
US7566276Aug 24, 2006Jul 28, 2009Dogleg Right CorporationMulti-piece putter head having an insert
US7568982Feb 9, 2009Aug 4, 2009Callaway Golf CompanyGolf club with high moment of inertia
US7578751Nov 24, 2008Aug 25, 2009Callaway Golf CompanyGolf club head
US7588501Feb 23, 2009Sep 15, 2009Callaway Golf CompanyGolf club head
US7591737Oct 8, 2007Sep 22, 2009Callaway Golf CompanyGolf club head
US7637822Jun 18, 2009Dec 29, 2009Callaway Golf CompanyGolf club head
US7674187Jul 13, 2009Mar 9, 2010Callaway Golf CompanyGolf club with high moment of inertia
US7708652Aug 4, 2009May 4, 2010Callaway Golf CompanyGolf club with high moment of inertia
US7749096Sep 22, 2009Jul 6, 2010Callaway Golf CompanyGolf club head
US7749097Dec 11, 2009Jul 6, 2010Callaway Golf CompanyGolf club head
US7775904 *Sep 29, 2008Aug 17, 2010Sri Sports LimitedWood-type golf club head
US7828672Aug 24, 2006Nov 9, 2010Dogleg Right CorporationBall flight adjustment apparatus for a golf club head
US7850542May 4, 2010Dec 14, 2010Callaway Golf CompanyGolf club with high moment of inertia
US8177662Aug 24, 2006May 15, 2012Dogleg Right CorporationGolf club head weight with seal and vibration dampener
US8382604Feb 26, 2013Dogleg Right CorporationModular hosel, weight-adjustable golf club head assembly
US8414422Nov 5, 2010Apr 9, 2013Callaway Golf CompanyExternal weight for golf club head
USRE36950 *Jun 23, 1997Nov 7, 2000Vardon Golf Company, Inc.Golf club head with increased radius of gyration and face reinforcement
WO1993022008A1 *May 6, 1993Nov 11, 1993Shipley B EGolf putter head
WO1995015198A1 *Nov 18, 1994Jun 8, 1995Goldwin Golf Usa IncGolf club and method of manufacture
WO1999022824A1 *Oct 16, 1998May 14, 1999Lane PetersonGolf club head
Classifications
U.S. Classification473/345, 473/326
International ClassificationA63B53/04, A63B53/02
Cooperative ClassificationA63B59/0088, A63B53/02, A63B53/04
European ClassificationA63B53/02, A63B53/04