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Publication numberUS2777693 A
Publication typeGrant
Publication dateJan 15, 1957
Filing dateAug 8, 1955
Priority dateAug 8, 1955
Publication numberUS 2777693 A, US 2777693A, US-A-2777693, US2777693 A, US2777693A
InventorsMitchell Charles F
Original AssigneeMitchell Charles F
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bowling ball insert pad
US 2777693 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan 35, 1957 c. F; MITCHELL 2,777,693


United States Paten BQW GB LIA PAD- Charles F,"NIitchell,1Akmn,Ghio

Application August -8, 1955, Serial No; 526,855.

1,.Cliiil1l,Z I (CI. 2739-63) Therinvention; relatesto .bowling; and; especially gto; insertrpadsi providedz'for. use in .the-rthumb hole, of a.

bowling: ball.

Even 'thoughwthe; balls: are made .to specialg-order, still; the bowler may not have the desired tight grip and/or extremely-i-accurate control over theball when grasping and throwing ;the: bal1e,and :he, st i.ll may letithe ball drop or, slip. Thuamany bowlers heretofore have used some type ,ofpads positioned the thumb and/.or finger holes oft-the pbaihto facilitate obtaining. an, especially .Tsecure grip-on the-ball'so'as to have maximum control over the ball at the instant of release of the ball for passage down the alley for the bowling action but even then some slippage may occur. Some of such insert pads have been of the type shown and described in my own prior U. S. Letters Patent No. 2,708,578, and I now have found that for some uses and/ or people, the bowling ball insert pads may have a slightly difierent construction from that shown in my prior patent, and still give very desirable results.

One important object of the present invention is to provide a bowling ball insert pad characterized by the substantially smooth surface thereof broken only by one irregularity in the surface of the pad at the region thereof normally contacting the ball of the thumb engaging the pad.

Another object of the invention is to provide an insert for the thumb hole of a bowling ball to insure against the ball slipping from the grasp of a bowler in the act of rolling the ball.

Another object of the invention is to provide an insert pad for use in the thumb hole of a bowling ball for aiding in preventing any suction developing between a thumb and the pad.

Another object of the invention is to make a sturdy, durable pad of the class described of low cost to aid in accurately controlling a bowling ball when such insert pad is positioned in a thumb hole of the bowling ball.

The foregoing and other objects and advantages of the invention will be made more apparent as the specification proceeds.

Reference now should be had to the accompanying drawings, wherein:

Fig. 1 is an elevation, partially broken away and shown in section, of a bowling ball having an insert pad embodying the principles of the invention inserted therein, which ball is shown being grasped by a bowler;

Fig. 2 is an enlarged longitudinal sectional view through the insert pad of Fig. 1 and associated portions of the bowling ball;

2,777,693 Patented Jan. 15, 1957 2 Figs}; is ar-perspective view of the insert pad: of Figs. 1-: and 2janda:

Fig.4 is a:fragmentary.enlarged section ofthe thumb patch-wi-th: .a backingv strip. thereon.

Whenzrrefernng: to..corresp0ncling parts shown in the drawings aandrdescribed in the specification, correspondingnumerals. are-fused 'to: facilitate comparison between such patch and: being: adapted: to be. secured by the: other:

coatingatoi thetside ofazhole in '.-3. .'bOW1lDg-balll The: patchuis of ra size to extend substantially the fulllength of a holeiiriiwhich it ispositionedrand'has a body portion' of-juniformi'thickness except fon ahtransversely extending recessiextendingtcompletely: across. the patchradjacent the loweniend ofcthepatch. .when inserted :in a bowling ball hole.

Nowreferringrin detail toztthe structureshown in the: drawings, a bowling ball is illustrated as a whole by 'the numerahl'; Thissbowlingibalkhasva thumb hole2 provided:thereinz-andcaesirhilarfingerreceiving hole-3 pro-- vided inranoth'er portion :of the :periphery of 'the bowling ball. Fig. 1 best shows how the thumb and finger of a personisizhandzindicated at HY-is engagedgwith these holes providedriin the bowling ball to the specifications and/01 siz'ezrequirement'. of. the person-'usingsuch bowling ball 1. Thesetholestiiandzfiiaretusually cylindrical in shape and extend: approximately two inches-into: the bowling ball from the sufrace thereof and may have tapered lower ends for convenience in drilling such holes in the ball.

As many finger holes as desired may be provided in this bowling ball and one or more patches as shown and described in may previously mentioned patent may be provided in one or more of the finger holes 3. Such patches give particularly good results in the finger holes for engaging a bowlers finger.

The insert pad of the invention is indicated as a whole by the numeral 4 and it preferably is made from a uniform mixture of cork and rubber or rubber-like materials. Preferably the cork is present in about 60% proportion by weight and the rubber or rubber-like material is present in about 40% by weight. One rubber material which is particularly useful in making up the insert pads 4 is the synthetic rubber neoprene and the finished rubbercork composition has a Shore durometer hardness of between about 45 and 65. This insert pad 4 is of uniform thickness throughout and preferably is less than A of an inch thick and usually closer to about of an inch thick. Usually the outer end of the insert pad 4 is tapered to a feather edge as indicated at 5. The particular composition mentioned herein has very desirable properties in that it provides sufiicient cork for absorbing moisture of the players hand when in contact therewith but yet it provides sufiicient flexibility or resilience in the pad as to help the person to obtain a firm grasp on the bowling ball.

As an important feature of the insert pad 4, it is provided with a transversely extending recess 6 adjacent the lower, or inner end thereof. This recess 6 is provided in spaced relationship to the lower or bottom end of the insert pad 4 in the portion thereof adapted to be engaged with the ball of the thumb in such thumb hole 2. Gne important function of the recess 6 is to prevent the formation of any suction between the players thumb and the insert pad 4 so that no diificulty is encountered in releasing the ball at the exact instant and in the exact manner desired by the bowling player.

Ususally the insert pad 4 is of such size as to extend substantially one third around the circumference of the bowling ball hole in which it is positioned.

in order to secure the insert pad in position, it is provided with an adhesive member 7 that preferably has a coating of a pressure-sensitive adhesive 8 and 9 on each face thereof. The layer of adhesive 8 is used for securing the adhesive member 7 to the remainder of the insert pad 4, while the layer 9 is provided on the opposite face of such adhesive member for use in securing the insert pad 4 to the wall of the bowling ball thumb hole 2, as shown in the drawing. Normally this insert pad would be secured to the thumb hole on the side thereof toward the adjacent finger holes in the bowling ball. The pressure sensitive member may comprise a strip of paper or fabric which is coated on both sides with the adhesive material to provide the binder means as stated herein. A strip of cover paper 10 is provided over the layer 9 of adhesive material so that such protective cover can be removed when it is desired to secure the insert pad into a bowling ball hole and be retained permanently therein by pressing the insert pad into the desired position.

The cork used in the insert pad 4 is in the form of cork granules and is intimately mixed with the rubber material to provide a homogeneous mass from which the insert pads can be produced in continuous strip form and easily be cut to the desired individual insert pad size and bowlers. Hence it is considered that the objects. of the invention have been achieved.

While one complete embodiment of the invention has been disclosed herein, it will be appreciated that modification of this particular embodiment of the invention may be resorted to without departing from the scope of the invention as defined in the appended claimp What I claim is:

A grip means for use with a bowling ball having a thumb hole therein, which grip means comprises a patch of resilient material having about 60% cork and about 40% of a rubber-like material therein and with the cork being present in small particles distributed uniformly throughout the patch, and an adhesive member including a base with a pressure-sensitive adhesive coating on both sides thereof adhesively secured by one coating of the pressure-sensitive adhesive to the patch and being adapted to be secured by the other coating to a side of a hole in a ball, said patch being of a size to extend substantially the full length of and about one third of the circumference of the hole in which it is positioned, the patch being of uniform thickness throughout except for a portion tapering substantially to a feather edge at the top of the patch and a transversely extending recess extending completely across the patch adjacent but spaced from the lower end thereof to aid in preventing suctional engagement of a bowlers thumb and said patch because of the plurality of foraminous cork areas exposed for suction and gripping action on the surface of the patch.

References Cited in the file of this patent UNITED STATES PATENTS 2,469,268 Jerome May 3, 1949 2,518,335 Klinkosh Aug. 8, 1950 2,708,578 Mitchell May 17, 1955

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2469268 *Mar 25, 1948May 3, 1949Jerome Chester WBowling ball insert
US2518335 *Oct 18, 1947Aug 8, 1950Klinkosh Benjamin JVented finger socket for bowling balls
US2708578 *Nov 9, 1951May 17, 1955Charles F MitchellBowling ball finger patch
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2979334 *Apr 23, 1958Apr 11, 1961Mitchell Charles FSmooth surfaced bowling ball with apertures therein
US3055661 *Jun 4, 1959Sep 25, 1962Mitchell Charles FBowling ball hole pad
US3078097 *Dec 15, 1959Feb 19, 1963Mitchell Charles FPorous bowling ball patch
US3113775 *May 19, 1960Dec 10, 1963Taylor Don AFinger grip pad for bowling balls
US3266804 *Dec 30, 1963Aug 16, 1966Dale A CarterBowling ball including thumb hole lined with velvet pile
US3341004 *Dec 16, 1965Sep 12, 1967Kendall & CoInterlined tapes in roll form
US3342488 *Oct 13, 1964Sep 19, 1967Novatnak George FBowling ball and finger hole gripping insert
US3454440 *Oct 22, 1965Jul 8, 1969Starmaster Trophies IncMethod of and apparatus for forming thumb receptacles in bowling balls
US3784198 *Aug 21, 1972Jan 8, 1974Bach BFinger hole liner for bowling ball
US4358112 *Sep 4, 1981Nov 9, 1982Straborny Andrew JFinger hole insert for bowling balls
US6508718 *Mar 9, 2001Jan 21, 2003David M. AlbertInsert shim for a bowling ball
US7258620May 18, 2006Aug 21, 2007Todd A WillmanBowling ball insert
US20070028713 *Feb 14, 2006Feb 8, 2007Morgan Lee ARemovable, adhesive backed gripping device
U.S. Classification473/130
International ClassificationA63B37/00
Cooperative ClassificationA63B37/0002
European ClassificationA63B37/00B2