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 numberUS1672944 A
Publication typeGrant
Publication dateJun 12, 1928
Filing dateSep 1, 1927
Priority dateSep 1, 1927
Publication numberUS 1672944 A, US 1672944A, US-A-1672944, US1672944 A, US1672944A
InventorsJowett George F
Original AssigneeJowett Inst Of Physical Cultur
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dumb-bell
US 1672944 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

June l2, 1928.

G. F. JOWETT DUMB BELL Filed Sept. 1, 1927 w Y MMMBMMM da/f,

Patented June 12,1928.

UNITED STATES PATENT OFFICE.

` GEORGE F. J'OWETT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB T0 `J'OTTET'I IN- STITUTE F PHYSICAL CULTURE, INC.,` OF SCRANTON, PENNSYLVANIA, A COB- PORATION OF DELAWARE.

` DUMB-BELL.

Application led September 1, 1927. Serial No. 216,956.

My invention relates to dumbbells and has for one of its important objects a very sim-` ple means for varying theweight thereof lined by. or included within the terms 'i or language of the appended claim.

In the drawings:

Figure 1 is a side elevation of my improved dumbbell;

Figure 2 is a longitudinal sectionalview thereof illustrating the dumbbell `with a lesser number of laminated disks, and

Figure 3 is a view in perspective of the body portion of the dumbbell.

My invention in the form or embodiment shown in the drawing and briefly described comprises the body portion, indicated generally as at l0, the laminated disks or weights, 11, and the locking means there- 25 for, 12.

The body portion, 10, of the dumbbell preferably consists of a hand holding portion, 13, and a pair of spaced and integrally formed rims or flanges, 14. The outer surfaces or faces of the flanges, 14, are of course parallel so that the laminatedweights adjacent thereto may firmly seat against it, whereas the opposite faces, l5, of the flanges are suitably tapered or gradually thickened toward the center thereof so as to present a smooth surfacel to the hand of the user. By forming the center of the hand holding portion, 13, slightly larger in diameter than the ends a iirm grip may of course be obtained. 40 To effectually prevent the dumbbell` from moving in the hand while exercising, I preferably form one side thereof with a plurality of finger receiving depressions, 16. It is a well recognized fact that greater benefit is derived in exercisingfrom devices of this nature when they are iirmly gripped.

The laminated disks or weights, 11, are preferably die-cast so that they may be uniform in shape and weight, and are of slightly larger diameter than the outer diameter of the flanges or rims, 14, as is clearly shown in Figures 1 and 2. The centrall located openings, 11a, are of course forme slightly larger in diameter than the threaded portion of the screws, 12, to permit their easy removal or replacement with respect thereto. By forming the outer edges ofthe disks, 11, rounded, very smooth outersurfaces are presented. i

The screws, 12, for fastening the laminated weights, are each provided with the enlarged heads, 17, which are somewhat fiattened.` for the purpose of readily gripping, so that they may be easily operated when it is desired to increase or decrease the number of disks. With particular reference to Figure 2 of the accompanying drawing, it will be noted that the hand holding portion, 18, of the body portion, 10, of the dumbbell is threaded but a relatively short distance from each of the ends, the remaining or center portion being formed with a slightly enlarged counterbore to facilitate the threading operations.

It will be readily understood therefore that dumbbells formed in this novel manner may be readily manufactured upon a high production basis as for example by the die-casting method and requiring but three separate members, namely the body portion, the laminated disks, and the retaining screws, they may be readily interchangeable and sold at a comparatively low price.

I claim:

A dumbbell comprising a main element including a hand gripping portion and end disks on such hand gripping portion, the main element having an axial bore opening through ,the ends thereof, such bore having end ortions of relatively reduced diameter and interiorly threaded, the central portion of the bore being of relatively enlarged diameter and smooth, screw-rods threaded to cooperate with the threaded portions of the bores and having terminal operating heads of materially less diameter than that of the end disks, and series of independent weight disks of a diameter greater than that of the end disks and designed to `be held by the screw rods between such end disks and the terminal heads of the rods, said weight being formed with central openings to receive the screw rods, whereby whenithe dumbbell is resting on a surface the full contact is borne by the edges of the weight disks alone.

GEORGE F. JowETT.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2719038 *Feb 6, 1953Sep 27, 1955Massa SteveWeighted skip rope handle
US3226115 *May 28, 1962Dec 28, 1965Battle Creek Equipment CoCompact gymnasium
US3311374 *Aug 26, 1964Mar 28, 1967Edward H WittenbergVariable weight bar bell exercising device
US3488051 *Jan 9, 1967Jan 6, 1970Bertha Papistas SchererVariable weight exercising device
US3913908 *Jun 29, 1972Oct 21, 1975Sears Roebuck & CoBarbell having a detachably mounted weight supporting bar
US4351526 *Mar 5, 1980Sep 28, 1982Leonard SchwartzDumbells
US4627618 *Feb 28, 1983Dec 9, 1986Leonard SchwartzAerobic hand weights
US4743017 *Aug 20, 1985May 10, 1988Jaeger Marvin JDumbbell attachment
US4773640 *Mar 18, 1987Sep 27, 1988Koelbel Gert FDumbbell type exercising device
US5222930 *Apr 15, 1991Jun 29, 1993Bold Jr Thomas PInertial force exercise device having dense body extremities
US5286244 *Jan 6, 1992Feb 15, 1994Safety Sports, Ltd.Multi-functional hand weight
US5326340 *Jul 29, 1993Jul 5, 1994Michael J. CoffeyExercise device
US5346449 *Jun 3, 1993Sep 13, 1994Schlagel Bruce EBarbell system with improved locking feature
US5628716 *Dec 22, 1995May 13, 1997Brice; John P.Adjustable weight exercise device
US5637064 *Oct 13, 1995Jun 10, 1997Intellbell VenturesAdjustable dumbbell
US5769762 *Jul 3, 1996Jun 23, 1998Intellbell, Inc.Exercise weight system
US5779604 *Mar 4, 1996Jul 14, 1998Intellbell VenturesAdjustable dumbbell
US6039678 *Nov 2, 1998Mar 21, 2000Dawson; Fredric O.Dumbbell set with quick release plates
US6059700 *Feb 3, 1998May 9, 2000Ultima Fitness, Inc.Locking system for barbells
US6416446 *Feb 8, 1999Jul 9, 2002Mark A. KrullSelectorized dumbbell
US6837837 *Nov 19, 2001Jan 4, 2005Robert Lee NetheryExercise device
US6839029Oct 16, 2002Jan 4, 2005Etenna CorporationMethod of mechanically tuning antennas for low-cost volume production
US6875161 *Apr 19, 2002Apr 5, 2005 Weight lifting device
US7011610 *Mar 10, 2004Mar 14, 2006Greg WawrzyniakRoll-able dumbbells
US7025713Oct 13, 2003Apr 11, 2006Icon Ip, Inc.Weight lifting system with internal cam mechanism
US7077790Apr 13, 2004Jul 18, 2006Krull Mark AAdjustable weight exercise methods and apparatus
US7077791Apr 18, 2002Jul 18, 2006Mautilus, Inc.Weight selection methods and apparatus
US7137932 *Dec 12, 2005Nov 21, 2006Doudiet Adam TDumbbell adjusting system
US7223251 *Aug 4, 2003May 29, 2007Cassidy Phillips Peter LMassage device
US7261678Jun 5, 2003Aug 28, 2007Nautilus, Inc.Adjustable dumbbell system
US7335142 *Oct 5, 2005Feb 26, 2008Intellex, Inc.Selectorized dumbbell weight with weight plates formed by a pair of welded weight subplates and method of manufacture thereof
US7377885Oct 19, 2006May 27, 2008Atd Services, Inc.Dumbbell adjusting system method
US7534199Jun 19, 2006May 19, 2009Nautilus, Inc.Weight selection methods and apparatus
US7553265May 19, 2006Jun 30, 2009Nautilus, Inc.Adjustable dumbbell system
US7614982Aug 24, 2007Nov 10, 2009Nautilus, Inc.Adjustable dumbbell system
US8137248Mar 3, 2009Mar 20, 2012Krull Mark AExercise resistance apparatus
US8298125Jul 30, 2010Oct 30, 2012Icon Health & Fitness, Inc.Weightlifting device with mechanism for disengaging weight plates
US8485946 *Dec 14, 2010Jul 16, 2013Exemplar Design, LlcTurn weight plate
US8690741 *Apr 26, 2013Apr 8, 2014Exemplar Design, LlcTurn weight plate
US20030096680 *Nov 19, 2001May 22, 2003Nethery Robert LeeExercise device
US20030174096 *Oct 16, 2002Sep 18, 2003Mendolia Greg S.Method of mechanically tuning antennas for low-cost volume production
US20040005968 *Jun 5, 2003Jan 8, 2004Nautilus, Inc.Adjustable dumbbell system
US20040180763 *Mar 10, 2004Sep 16, 2004Greg WawrzyniakRoll-able dumbbells
US20050079961 *Oct 13, 2003Apr 14, 2005Dalebout William T.Weight lifting system with internal cam mechanism
US20050132803 *Mar 26, 2004Jun 23, 2005Baldwin David J.Low cost integrated MEMS hybrid
US20060135328 *Dec 12, 2005Jun 22, 2006Doudiet Adam TDumbbell adjusting system
US20060211550 *May 19, 2006Sep 21, 2006Nautilus, Inc.Adjustable dumbbell system
US20060223684 *Jun 19, 2006Oct 5, 2006Nautilus, Inc.Weight selection methods and apparatus
US20070037675 *Oct 19, 2006Feb 15, 2007Doudiet Adam TDumbbell adjusting system
US20070087918 *Oct 5, 2005Apr 19, 2007Intellbell Ventures, Inc.Selectorized dumbbell weight with weight plates formed by a pair of welded weight subplates and method of manufacture thereof
US20080039299 *Aug 24, 2007Feb 14, 2008Nautilus, Inc.Adjustable dumbbell system
US20110045956 *Jul 30, 2010Feb 24, 2011Matthew ColledgeWeightlifting device with mechanism for disengaging weight plates
Classifications
U.S. Classification482/108
International ClassificationA63B21/072, A63B21/06
Cooperative ClassificationA63B21/0728
European ClassificationA63B21/072F