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 numberUS2550846 A
Publication typeGrant
Publication dateMay 1, 1951
Filing dateJul 14, 1948
Priority dateJul 5, 1948
Publication numberUS 2550846 A, US 2550846A, US-A-2550846, US2550846 A, US2550846A
InventorsStanley Milligan Charles
Original AssigneeStanley Milligan Charles
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Golf club
US 2550846 A
Images(3)
Previous page
Next page
Description  (OCR text may contain errors)

v May 1, 1951 v c. s, MLLGAN 2,550,846

GOLF CLUB Filed Juy 14, 1948 a sheetssneet s Patented May 1, '1951 2,550,846 GOLF .CLUB

Charles Stanley Milligan, Hamilton, Ontario,

' Canada Application July 14, 1948, Serial No. 38,667 In Great Britain July, 1948 (c. zra-77) 6 Claims.

The present invention relates to golf clubs, and more particularly to golf clubs which impart a spin to the golf ball at impact by utilizing air currents developed by the particular shapings of the golf clubs.

`consideration has been given to aerodynamic laws in the past as it has been proposed to streamline the shaft and/or the head of the club to reduce the air` resistance to movement of theclub but, so far as I am aware, the prior designers of golf clubs have not appreciated or at least have not taken advantage of the fact that aerodynamic forces of substantial magnitude are developed by a golf club as it moves into contact with the ball. At impact, the club h ead may be travelling at up to about 126 miles per hour, i. e. 184.8 feet per second, and it has long been recognized that the club meets with considerable air resistance at speeds of this order. Objects of this invention are to provide golf clubs with heads of such shape as to utilize the air currents developed by the rapidly moving club head to impart a spin to the ball. Objects are to provide golf clubs having heads of novel shape which reduce the air resistance to high speed travel of the club head and which develop air currents which rush past 'the ball to impart a spin to the same as it leaves the face of the club head. More specifically, objects are to pro- 'vide club heads which are relieved by streamlined recesses atthe top or at the bottom surfaces of the head to develop air currents over or beneath a ball to impart a back spin or a top spin respectively.

These and other objects and the advantages of the invention will be apparent from the following specification when taken with the accompanying drawings in which:

Fig. 1 is a fragmentary front elevation of a driver embodying the invention;

Figs. 2 and 3 are, respectively, a perspective view of the bottom of the driver; and a vertical section through the same on line 3-3 of Fig. l; Fig. 4 is a front elevation of the head of a brassie embodying the invention;

Fig. 5 is a plan view of the same; V

Fig. 6 is a vertical section through the brassie on line '-t of Fig. 4;

Fig. '7 is av fragmentary front elevation of a driver having a sole plate which is shaped to impart the desired spin to the golf ball;

Fig. 8 is a section on line 8--3 of Fig. 7

Fig. 9 is a fragmentary front elevation of a brassie having a top plate in which the shallow groove is formed;

Fig. 10 is a section on line Illlil of Fig. 9;

Fig. 11 is a front elevation of an iron club provided with a top recess for imparting back spin to the ball; and

Fig. 12 is a section on line i2--l2 of Fig. 11.

In Figs. 1 and 2 of the drawing, the reference numeral i identifies the head of a driver having a shaft 2 which may be of conventional circular` cross-section cr may be streamlined to reduce air resistance. The lower surface of the club head i is provided with a relatively wide and shallow groove 3 which is streamlined to avoid turbulence in the air current through the same when the club head is moving at high speed, i. e. the groove ilares smoothly inwardly from its inlet to a region of minimum width at about the center of the lower surface of the head l and then fiares smoothly to an exit at the rear of the club head which is preferably somewhat wider than the entrance to relieve compression and insure the quicker dispersion of the air under compression. The axis or center line of the groove 3 is, of course, in line with the intended path of travel of the golf ball. The club head may be, and preferably is, provided with conventional metal .sole plates ll, ll' at opposite sides of .the groove 3. As Vshown in Fig. 3, a driver having a head E provided with a groove 3 may have its striking face at a slightly steeper angle than normal to increase the air compression above the ball.

The method of operation of the novel driver will be apparent from a consideration of Fig. 3. A lower portion of the ball is in line with the groove 3 at the instant of impact and top spin is imparted to the ball by the air current, indicated by arrows a, which flows through the groove 3 and constitutes -a drag or frictional resistance to forward movement of the bottom of the ball.

The drag action is developed even though the ball may be topped by the player, and 'it is supplemented by the air compressed against the upper portion of the striking surface 5.

For a brassie or spoon, having a head on a shaft 8, back spin may be imparted to the ball by aerodynamic action by providing a streanlined groove or recess 9 in the upper surface of the club head 'l. As shown in Fig. 6, a back spin will be imparted to the ball by the air current, indicated by arrows b, which results from the high speed travel of the club head 'l and flows over the top portion of the ball.

It is convenient and economical to provide the spin-imparting grooves in shaped plates of metal,

plastic materials or wood which are secured to the main body of a club. Such shaped plates may be employed in the manufacture of new clubs, or may be used to convert existing clubs into embodiments of this invention.

In the case of a driver, as shown in Figs. 7 and 8, the body portion of -a club head lt on a shaft l I has a flat lower sur-face to which the fiat upper surface of a sole plate l2 is secured by screws l3, the lower surface of the sole plate being provided with a shallow streamlined groove M. In like manner, as shown in Figs. 9 and 10, a plateV i,= with a shallow streamlined groove iii may be cured by screws I 'I to the headA .18 ofv a brassie.

As shown in Figs. 11 and 12, the invention may be applied to an iron club head iQ bycutting or otherwise shaping the top surface to. provideV a4 shallow groove 29. The forward edge ZJ, of the top surface of the club head is preferably parallel' to the lower edge 22 ofthe striking face, i. e. the depth of the strikingface at the hosel is made equal to thedepthat the toeof the club. This relationship affordsthe desired aerodynamic fiow over the top surface of the ball andhas the further advantage that the parallel arrangement of the topl and bottom ed-ges 2d and 22 facilitates the proper alignment of the club head with respect to the ball.

It is tobe understood that the invention is not limited to the particular` constructions herein shown and described, and that modifications which may occur toV those. familiar with the design and construction. of golf clubs fall within the spirit and scope of the invention as defined in the following claims.

I claim:

1. A golf club comprising a shaft anda striking head, said striking head having upper and lower surfaces, and one of said surfaces being provided with a recess in line with the desired path of travel of a ball for establishing an air current to impart a spin to the bail; said recess being streamlined with a minimum width. and depth at an. intermediate section, and the exit of the recess at the rear of the. club headbeing wider than the entrance of the recess.

2. A golf club as recited in claim 1, wherein said striking head comprisesa body portion having a flat surface, and -a shaped plate havingV a. flat surface secured to the flat surface of said body portion, the opposite surface of said shaped plate being provided with said streamlined recess.

3. Agolf club head as recited in claim 2, wherein said plate is secured to said body portion to form the lower surface of the club.

4. A golf club head as recited in claim 2, wherein said plate is secured to said body portion to form the upper surface of the club.

5. A golf club comprising a shaft and a striking head, said striking head having a body portion with upper and lower surfaces, one of said surfaces being fiat, and a shaped plate having a fiat surface secured to the fiat surface of said body portion, the opposite surface of the shaped plate being provided; with a recess extending in line with thedesired path of travel of a ball for establishing an air current to impart a spin to the ball, said recess being streamlined with a minimum width and depth at an intermediate section, and the exit of the recess at the rear of the club head being wider than the entrance of the recess.

6. A golf club comprising a shaft and a striking head with an upper and a lower surface, the upper surface being provided with a streamlined recess extending in line with the desired path of travel of a ball for establishing an air current to impart a back spin to the ball, said recess having a minimum width and depth at' an intermediate section, and the exit ofthe recess at the rear of the club head being wider than the entrance of the recess.

CHARLESl S. MILLIGAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 780,776 Brown Jan. 24, 1905 1,537,711 Spaiford May 12, 1925 1,913,821 Stumpf June 13, 1933 2,041,676 Gallagher May 19, 1936 FOREIGN PATENTS Number Country Datel 15,597 Great Britain 1904 340,579 Great Britain. Jan. 5, 1931

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US780776 *Apr 12, 1904Jan 24, 1905James Ross BrownGolfing-club.
US1537711 *Oct 2, 1924May 12, 1925Spafford Lewis BGame club
US1913821 *Jun 30, 1932Jun 13, 1933Stumpf Arthur JGolf club
US2041676 *May 9, 1934May 19, 1936James P GallagherGolf club
GB340579A * Title not available
GB190415597A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2859972 *Jun 26, 1957Nov 11, 1958Reach Milton BGolf club
US2880002 *Jul 19, 1955Mar 31, 1959Wetty & Sons SaGolf club head
US2934347 *Aug 5, 1955Apr 26, 1960Patrick SiniscalchiGolf stick indicia
US3468544 *Oct 22, 1965Sep 23, 1969Antonious A JGolf club of the wood type with improved aerodynamic characteristics
US3625517 *Nov 10, 1969Dec 7, 1971John E DurnackGolf putter with center of mass aligned with shaft axis
US3997170 *Aug 20, 1975Dec 14, 1976Goldberg Marvin BGolf wood, or iron, club
US4065133 *Mar 26, 1976Dec 27, 1977Gordos Ambrose LGolf club head structure
US4332388 *Feb 21, 1980Jun 1, 1982Cobra Golf, Inc. IiGolf club head
US4431192 *Feb 6, 1981Feb 14, 1984Stuff Jr Alfred OGolf club head
US4828265 *Apr 23, 1984May 9, 1989Antonious A JGolf club head
US4850593 *Sep 26, 1988Jul 25, 1989Nelson Alan FReduced drag club head for a wood type golf club
US4900029 *Mar 16, 1989Feb 13, 1990Sinclair Hugh JGolf club head with aerodynamic upper surface
US4930783 *Sep 18, 1984Jun 5, 1990Antonious A JGolf club
US5004241 *Mar 5, 1990Apr 2, 1991Antonious A JMetal wood type golf club head with integral upper internal weighted mass
US5203565 *Jan 22, 1992Apr 20, 1993Murray Tom RGolf club head
US5213328 *Jan 23, 1992May 25, 1993Macgregor Golf CompanyReinforced metal golf club head
US5251901 *Mar 1, 1993Oct 12, 1993Karsten Manufacturing CorporationWood type golf clubs
US5292129 *Mar 8, 1993Mar 8, 1994Macgregor Golf CompanyReinforced metal golf club head
US5380009 *Mar 30, 1994Jan 10, 1995Henry-Griffitts, Inc.Notched golf club face
US5456469 *Jan 17, 1995Oct 10, 1995Macdougall; Alexander S.Dynamically stabilized golf club
US5486000 *Dec 27, 1993Jan 23, 1996Chorne; RobertWeighted golf iron club head
US5544884 *Mar 27, 1995Aug 13, 1996Wilson Sporting Goods Co.Golf club with skewed sole
US5632695 *Mar 1, 1995May 27, 1997Wilson Sporting Goods Co.Golf clubhead
US5735754 *Dec 4, 1996Apr 7, 1998Antonious; Anthony J.Aerodynamic metal wood golf club head
US5851159 *Jan 7, 1997Dec 22, 1998Burrows; Bruce D.Metal wood type golf club head
US5944620 *Oct 27, 1997Aug 31, 1999Elmer; John ClementMetal wood head of lightweight titanium
US6120389 *Mar 30, 1999Sep 19, 2000Millennium Golf AsGolf club head
US6165080 *Oct 15, 1998Dec 26, 2000Salisbury; Richard M.Golf club air assist driver
US6422951Nov 9, 1998Jul 23, 2002Bruce D. BurrowsMetal wood type golf club head
US6454663 *Apr 14, 2000Sep 24, 2002Mgolf International AsGolf club head
US6769997 *Jan 16, 2002Aug 3, 2004Hiram RuizGolf putter head
US6887165 *May 2, 2003May 3, 2005K.K. Endo SeisakushoGolf club
US7651414Oct 12, 2005Jan 26, 2010Roger Cleveland Golf Company, Inc.Golf club head having a displaced crown portion
US7789774Dec 2, 2009Sep 7, 2010Roger Cleveland Golf Company, Inc.Golf club head having a displaced crown portion
US7959523Jul 26, 2010Jun 14, 2011Sri Sports LimitedGolf club head having a displaced crown portion
US7963858 *Jun 29, 2009Jun 21, 2011Don SandersonGolf putter
US8235841Jul 23, 2010Aug 7, 2012Nike, Inc.Golf club head or other ball striking device having impact-influencing body features
US8641555Aug 6, 2012Feb 4, 2014Nike, Inc.Golf club head or other ball striking device having impact-influencing body features
US20110124434 *Aug 12, 2008May 26, 2011Robin DalyGolf Putter Head Design
EP0470488A1 *Jul 30, 1991Feb 12, 1992Anthony J. AntoniousMetal wood golf club head with improved weighting system
EP0734746A1 *Nov 18, 1995Oct 2, 1996Wilson Sporting Goods CompanyGolf club with skewed sole
EP1635916A2 *Jun 4, 2004Mar 22, 2006Tae Joon KimGolf club head
WO1982002669A1 *Feb 5, 1982Aug 19, 1982Alfred O Stuff JrGolf club head
WO2000044447A1 *Jan 27, 2000Aug 3, 2000Kruse SteinarGolf club head
Classifications
U.S. Classification473/327
International ClassificationA63B53/04
Cooperative ClassificationA63B2059/0011, A63B2225/01, A63B2053/0433, A63B53/04
European ClassificationA63B53/04