US1569766A - Golf practice apparatus and head-movement detector - Google Patents

Description

Jan. .12 1926. 1,569,766

J. MCARDLE GOLF PRACTICE APPARATUS AND HEAD MOVEMENT DETECTOR Filed August 18, 1924 INVENTOR.

,MJWMK A TTORNE Y.

Patented Jan. 12, 1926.

- citizen of the United States, residing at :Detroit, in the county of Wayne and State of Michigan, have invented a new and useful Golf Practice Apparatus and Head-Move- "ment Detector, of which the following is a f specification.

- It is agreed .by experts in the game of golf that non-movementof the head in any direction is essential to making the proper stroke in play or in practice, for in order to strike ,the'ball. with the club correctly it is necessary that the arms andshoulders and hence the head must be in the same position at the moment of impact as at the start of the back swing. Inorder to have the head in this position at the completion of the stroke it must not be moved during the stroke.

My"rinvention relates to a new and improved golf stroke practice apparatus and head movement detector which permits the player to play or practice a stroke allowing free movement to all parts of the body, at the same time giving audible signal of movement of the head in any direction.

My invention aims to provide an apparatus which is simple, light, compact, and which when folded may be carried in the golf-bag. The apparatus does not comewithin the line of sight of the player when making the stroke and does not bind his body in any way; consequently the player may make or practice a stroke under the same conditions as when the apparatus is not used, the only difference being that when the apparatus is used a signal is given when the head is moved at any part of the stroke.

I attain this result by the mechanism illustrated in the accompanying drawing, in which Figure 1 is a vertical section of the entire machine;

Figure 2 a sectional plan view through the signal mechanism on line 2-2 in Fig. 1;

Figure 3 a plan view on the line 33 in Fig. 1 showing top of support, legs being omitted for clearness; and

Figure 4 an elevation showing the method of using the apparatus. I

In brief, the machine comprises a revolving reel carrrying a line fastened to the head of the player, the reel actuated by a spring and housed in a sound box held by suitable support. Movement of the head causes the reel to revolve, in one direction or the other,

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o'pr PRACTICE APPAaATusAnD ;YHEAD4;MWEJMIENTIDETECEOR. L

'1 :v Application filed August 18;. 1924;; Serial N6. 732,785

which when turning produces-5*anrsaudibleaz signal, all as hereinafter.describediirldetail.

throughout the several views. ----;;;i Referring now to "the: drawing,- cylindrical sound ."box: hous1ng..-':-for;; 156615233.

Similar numerals refer to similar sparks which revolveson-the slottedscrewf'3,:which in turn screws intosupportswsupportg has a threaded neck projecting-through the bottom of the sound box housing 1 on which is screwed nut '5 which hOIds su portQ fora: reel inplace. Y The reel -2 gis niademfetw pieces, a lower -flangeimarked 2 and an upper flange Gjintheform of; a;-cup.: 5-;The 7 two flanges are fastened together atgthe'rhottom by soldering or other;. fasteninggthust-f; forming a grooved pulley on; gwhich -is ;wound line 7, one end ofthedine being fastenedto flange 6 and the otherprojecting-gthgough 7 hole 27 in housing and'carry-ing. ahook,8

or other means for fastening to head gear worn by the player.

Inside the cup of flange 6 is a spiral wound spring 9, one end of which passes through the slotted center of screw 3, the other end fastening to the cup of upper flange 6. Thus as the line 7 is pulled out, the reel 2 revolves about screw pin 3 which is kept from turning in support 4 by lock 35 screw 10, winding up spiral spring 9; and when line 7 is allowed to move back towards housing l, said spring tends to uncoil, causing reel to revolve and wind up line again.

The edge of top flange 6 is serrated with small round teeth which rub against spring wire 11 fastened to housing 1. Thus when reel turns in either direction, as line 7 is moved out or in, the serrations in flange 6 striking against wire 7 cause an audible signal to be made. Plate 12 which fits on top of the cup in top flange 6 holds flat spring 9 in place and is in turn held down by screw pin 3, making the spring readily accessible. Top housing cover 13 covers the signal mechanism and is held in place by screw 14 or other fastening.

Rod 15 screws into center of neck on support f and in turn is fastened by nut 16 to support plate 17. This support plate is the hinge base for the three adjustable legs which turn on hinge pins 18. These hinge pins are slotted at the ends slipping over top plate 17 vertical flanges and being fastened thereto by rivets 19. Pin 18 is a tight fit in the lug 20 which forms the hinge lug for legs so that some slight pressure must be usedvto nnove leg, thus eausi-ngsit to stay in posit-iondesired. lLug 2D- is soldered or otherwise fastened to top tube 21 which has its lower end bent in sli htly to, form a bearing for inner'tuhe' fltvhich carries spring 23 fastened 4:0 said; ,-inner.=-tuhe rivet 24. There is 5.510625 provided in tube 21 to receive spring send-:23 'When 111M722? is pulled out of nest with 21, so holding tube 10 iififlpiace when (extended; 'fDhe lower end of .ituheflZiis fitfid.WithIiEOOtJQGlifastenbd-lto ilhe rinxhe.

Ic1ain1- :1- .1 L111 agoiafisstrokeipnactieerapparatus and 15 iheadmovementidetector, the'c'ombination of snea'ns-fori-g. sound, zme'ans 'rfor isupsporttng sound mechanism, 'raIIdI'IHQ'aII'S for "dniti'ating isaidrsound bymmv'ement of the i r 2. 135mm gelf'istroke praeticeapparatus: and he'adzmovemen-t Heteetor, the combination "of mm iautomatin sound gproiiucing mechanism anfd ns=-for operating said mechanismby movement ozt the head' fin ng-elf stroke praticeapparatus, the --*eonlhinati'on of a- "revalving reel, means for "musing relf n) turn by movement of the -hezfd andnrhanismdor producing a'signal "when'reel is'ifevol vefi.

:In a head smovement'zdetector ior golf practice, the combination of an adjustable support, mechanism for producing sound,

-vtpgether Withnmans for causing sound to be initi'zfted'hy movement of the head.

,5. ln-agolf .st-rokepr-aetiee apparatus, the "combination of a flexible member, means for attaehing-said;member to head-gear or apparel worn by the player, mechanism a11oW- ing movement of -=said member; and means zfor producing ia -sound HIPOTI movement of J memberpwith isupporttfor same.

' :6. Inngolfstroke=pnaeticerapparatus,'ithe .rczmnbination of 2a surevolving member,' a spring'afonreturning ssa idcrnember to its origeinaliposition afteribeingimoved, means for producing sound upon movement of :said

"tinemberyandlmeans ifo'r'oausing'oscillating anemberto imove with imovem-ent of the I E. In a golf strokevpractiee apparatus, the mombination- 'of mechanism for producing a sound;mesns for operatingsound mechanism by j movement 0f =the" head,' and means for "supporting said 'm'ehanism in such a manthat'i't can not 'tip"0-v'er o1"m0ve when same is operzrted. I

UoHN MCARDLE.

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