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Publication numberUS1567248 A
Publication typeGrant
Publication dateDec 29, 1925
Filing dateApr 7, 1925
Priority dateApr 7, 1925
Publication numberUS 1567248 A, US 1567248A, US-A-1567248, US1567248 A, US1567248A
InventorsDahlman Joseph A
Original AssigneeDahlman Joseph A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Golf club
US 1567248 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Dec. 29 1925.

' J. A. DAHLMAN 1567248 GOLF CLUB Filed April 7, 1925 Patented Dec. Z9, 19.25.

LEiLMti JOSEPH A. DAHLMAN, OF DULUTH, MINNESOTA.

GOLF CLUB.

Application filed April 7, 1925. Serial No. 21,335.

receptacles for fillers for increasing their gravity, or for shifting their' centers of gravity to change the balance of the club head. -It has fora further object the establishing of the weights in the club head in such manner as to assure rigidity and permanence of their position therein against accidental displacement, but subject to convenient removal if desired. With these and other objects in view it consists of the following constructions, combinations and arrangement-s of parts. I In Athe drawings, Fig. 1 is a central vertical transverse section through a club head embodying my invention. -F ig. 2 is a central horizontal section of the same partly in elevation. Fig. 3 is a side elevation of the front or striking face of said club head. Fig. 4: is a modified form of the hereinafter described Abolt head or striking head embodied in said invention. Fig. 5 is a rear, or yfollowing side elevation of said club head. Fig.A 6 is a modied form of the hereinafter described rear weight or insert. Fig. 7 is a top plan view partly in section of a modilied form of the hereinafter described bolt. In the drawings, 1 is the body portion of a golfclub of any suitable form or ma',

ject the provision of weights provided with of said members, and an externally threaded traction screw 5 extending through the other of said members into threaded e1igagenient with said internally threaded 6 screw, by means of which traction members the striking' head and the rear weight may be drawn toward each other and tightly into recesses provided for them in said body portion and be there retained. Said strikv ing head is preferably provided with a plurality of shoulders as 2, 21 and 2, of any desired member, whereby greater depth of solid metal may be secured at the striking center of the head than at the periphery, thus providing density where it is most required without making the entire head too heavy. Either or both of said shoulders 2b 2 may, if desired, be omitted within the spirit and scope of certain of my claims. A short space is preferably left opposite the free end of said internally threaded traction member to permit of taking up any play of said strikinghead or rear weight which might result from shrinking of the wood.

Further, the striking head and the following weight may have recesses formed in any suitable positions therein, as at 2d, 3a in the modified forms thereof (Figs. t and 6, respectively), to receive fillers of metal for correcting the balance. That is, when the recesses are empty, the weights may be balanced around their central axes, and if it is desired to have more weight on one side of the central axis, the recess on that side lmay be filled. If desired, said recesses may be filled with lead or other comparatively heavy material at opposite sides of the axis, merely to increase the weight without chang ing the balance. The internally threaded traction member mayl also be partly filled with. a greater or less volume of inserted weighting material beyond the inward end of the externally threaded traction member, as with solid lead or lead discs, 6, or shot held in position by a wad interposed, 7, between the said discs and the inward end of said externally threaded screw (Fig. T). Or if desired, the inward end of the bore of t-he internally threaded traction member may be plugged with cork or other light substance, followed by lead discs or other suitable weighting substance between said cork and the inward end of said externally Ul threaded screw, thus throwing the additional weight forward or backward in Said traethreaded tion member asdesired, it rbeing understood that variations in growing conditions,A age, and seasoning of the Wood bodies and slight variations in contours or dimensions of club heads made of the same variety ofWood and approximately of the same dimensions tends to produce variations in balance Which make compensating adjustments of the' Weights highly desirable. It appears further that by the long and very rapid swingof the club through the air any, slight defect in balance is accentuated in efect'b-y Vthe long and Yrapid svvingof the club through ythe air, in a inanner more orless similar to the effect on a vessel caused by faulty trim or1 a biased helm. [It is desirable that'the finervadjustments offsaid vveights 'sfhallbe' made, the

luser of the club, or by professional .club

makers afterfthe indiyidualclub V.has been tried outby its. owner. l'Lhe 'importance of the ,L adaptability of rny 'invention fon suoli Vadjustnrients' Vwill therefore be' obvious. VThe striking head and rear Weight may be of anysuitable or desired contonrs shapes respectively. 4It'vvill be further obvious that Said invention may bev 1ni''idified in various particulars Within the'spiritfand scope of, Certain ofiny claims.

Yl. In a golf club, the combination ofI a lclub headbody portion, a striking head member inserted in :,tlie' front face thereof, 'a

rearjveight inserted theI rearlfaee thereof, an internally threaded traction member atmember inserted tightly into' a coneentric '.Waflly dfeeted nee l trie" ,ledueed portier 'formedlthereo-nfa rear Weight tightlyunserted .in a cdncentric reee'ssgfo-rinedfinthe :iearxfface of body portion, internally threaded l traction member 4fatta che'd "to` one of said members and exvteiidiiigftovvai'd the other of said members, land t"an 'externally d traction' "member extending through `said other` of saidmeinbeisan in tjo engagement .ivit'h fsaid fhiteriially lthieaded member.

'8f In a golf club, the combination of a club head 'body y portion, `ai 'i striking Weight member inserted in the front vface `-tlie'ieot face of saidbody portion, an Tinternally threaded traction member attached at one end toI` one of said members and extending through said body portion toward said rear Weightmember, an externally threaded tracrear Weight inserted in the rear face of said body portion, and tractionineans for drawing saidweights toward each other, said recess beingjadapted to receive a load 1nsert Whereby'one side of said striking Weight may be made heavier than the other.

V5. 4Ina golf club, the Vc'zombination Witlra =club headbody portion, of a striking Weight, a',V load insertextending into the side of said weight, and means for` securing 'said ,strikingvveig'ht in said body portion. i

f6. In agolf club, the combination `with a club 'head body Y portion, o-f a weight rin- `sert ed` in the rear face[thereof, said Weight havinga ,recess formedin one of its Sides adapted to receivea load insert, and means for holdiii g said rearvvveight insaid body portion.

7. In a golf club, the combination of a elub' kheadjbody portion, a striking v Weight member, inserted in the 'front face thereof, a rear Weight inserted in the .rearface of said body portion,y traction means compris- Ving 'an internally threaded 'and A'an externally threaded `member'for drawing` said Weightii'iserted in said internally threaded member in advance of said externally threaded niemben 8.!'In a golf c lub, t l i e combination with a elub head body portion, of a striking iveightmernber inserted in the front .face

fthereofeafrear `v'veight member inserted in thefre'ar `face thereof, a tvvoparttraction "inenlib er extending through 'Bone of vsaid Weights and attached to the other of'said Weights,y and separateloading element inserted in one'of'said members."

9. In a golf club,'fthe combination with a club; head body portion, of ya striking Weight Ymember inserted in the front :face

thereof, a rear Weight inenjibei',inserted in theiear f ace ofsaid body portion, a tivopart ytraction 'inember lextending through 'o1i c. of said -AWeights ,and lattached 'to 'the 'other of `said Weights, and separ'ate loading elements' Iinserted in 4al 4plurality fof said members.

Weights towardl each other, and a separate

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3659855 *Nov 13, 1969May 2, 1972Shakespeare CoGolf club head and novel method of producing same
US4173343 *Jun 7, 1976Nov 6, 1979Zephyr Industries, Inc.Mallet putter
US4195842 *Jan 9, 1978Apr 1, 1980Coleman Marvin WGolf club and process for making same
US4213613 *Dec 29, 1977Jul 22, 1980Nygren Gordon WGolf club head with center of gravity near its striking face
US4252262 *Sep 5, 1978Feb 24, 1981Igarashi Lawrence YMethod for manufacturing a golf club
US4708347 *Apr 22, 1986Nov 24, 1987Maruman Co., Ltd.Club-head
US5320353 *Jul 29, 1993Jun 14, 1994Moore James TGolf club
US5405136 *Sep 20, 1993Apr 11, 1995Wilson Sporting Goods Co.Golf club with face insert of variable hardness
US5464211 *Sep 19, 1994Nov 7, 1995Atkins, Sr.; ClydeGolf club head
US5522593 *May 19, 1994Jun 4, 1996Kabushiki Kaisha Endo SeisakushoGolf club head
US5749794 *Aug 31, 1995May 12, 1998Kabushiki Kaisha Endo SeisakushoGolf club head
US6332848Jan 28, 2000Dec 25, 2001Cobra Golf IncorporatedMetal wood golf club head
US6478693 *Feb 5, 2001Nov 12, 2002Bridgestone Sports Co., Ltd.Golf club head
US6729971 *Aug 15, 2002May 4, 2004Ceramixgolf.ComGolf club head with filled cavity
US7022029 *Mar 15, 2005Apr 4, 2006Ceramixgolf.Com, Inc.Golf club head with filled cavity
US7115041Aug 6, 2004Oct 3, 2006Callaway Golf CompanyPutter-type golf club head with an insert
US7785212Feb 14, 2008Aug 31, 2010Nike, Inc.Extreme weighted hybrid and other wood-type golf clubs and golf club heads
US8062151 *Aug 15, 2008Nov 22, 2011Nike, Inc.Golf club head and system
US8133128Aug 15, 2008Mar 13, 2012Nike, Inc.Golf club head and system
US8162776Mar 17, 2010Apr 24, 2012Nike, Inc.Golf club head and system
US8167739Jul 22, 2010May 1, 2012Nike, Inc.Extreme weighted hybrid and other wood-type golf clubs and golf club heads
US8337326Apr 9, 2012Dec 25, 2012Nike, Inc.Extreme weighted hybrid and other wood-type golf clubs and golf club heads
US8545343 *Oct 7, 2011Oct 1, 2013Nike, Inc.Golf club head or other ball striking device with slotted face mask
US8585514Oct 13, 2011Nov 19, 2013Nike, Inc.Golf club head and system
US8747252Dec 20, 2012Jun 10, 2014Nike, Inc.Extreme weighted hybrid and other wood-type golf clubs and golf club heads
US8876623Feb 3, 2012Nov 4, 2014Nike, Inc.Golf club head and system
US9072949 *May 31, 2012Jul 7, 2015Nike, Inc.Golf clubs and golf club heads having interchangeable rear body members
US20050119069 *Aug 6, 2004Jun 2, 2005Guard John G.Putter-type golf club head with an insert
US20050159246 *Mar 15, 2005Jul 21, 2005Caldwell Bruce G.Golf club head with filled cavity
US20080242441 *Mar 27, 2007Oct 2, 2008Well Jet International Co., Ltd.Golf club head and method for making it
US20090209364 *Feb 14, 2008Aug 20, 2009Nike, Inc.Extreme Weighted Hybrid and Other Wood-Type Golf Clubs and Golf Club Heads
US20100041490 *Aug 15, 2008Feb 18, 2010Nike, Inc.Golf club head and system
US20100041494 *Aug 15, 2008Feb 18, 2010Nike, Inc.Golf club head and system
US20100173723 *Mar 17, 2010Jul 8, 2010Nike, Inc.Golf club head and system
US20100285900 *Jul 22, 2010Nov 11, 2010Nike, Inc.Extreme Weighted Hybrid and Other Wood-Type Golf Clubs and Golf Club Heads
US20130040755 *May 31, 2012Feb 14, 2013Nike, Inc.Golf Clubs and Golf Club Heads Having Interchangeable Rear Body Members
US20140228151 *Apr 16, 2014Aug 14, 2014Acushnet CompanyGolf club head with replaceable face
US20150182821 *Mar 10, 2015Jul 2, 2015Nike, Inc.Golf Clubs and Golf Club Heads Having Interchangeable Rear Body Members
USD425158Jan 28, 1999May 16, 2000Cobra Golf IncorporatedGolf club head
Classifications
U.S. Classification473/342, 473/343
International ClassificationA63B53/04, A63B53/08, A63B53/00
Cooperative ClassificationA63B2053/0416, A63B2053/0491, A63B53/08
European ClassificationA63B53/08