US2069650A - Golf practice indicator - Google Patents

Description

Feb. 2, 1937. I c H 2,069,650

GOLF PRACTICE INDICATOR Filed Sept. 7, 1933 2 Sheets-Sheet 1 INVENTOR- Auausr C. ENGH GOLF PRACTICE INDICATOR Filed Sept. 7, 1933 2 Sheets-Sheet 2 Patented Feb. 2, 1937 UNETED STATES PATENT OFFICE 1 Claim.

My invention relates in general to a golf practice indicator and more specifically to an arrangement for use in golf practice or as an indoor game (providing a target to be struck by a golf club and means controlled thereby) for giving an indication of the distance which a ball would have travelled if struck and the direction in which the golf club head was moving at the moment of impact with the ball.

There have been target practice courts and various other complicated indicating devices designed for golf practice but I have provided a very simple, efficient, and easily calibrated device and one which is the first, as far as I am aware, to indicate distance and the direction of travel of the club head in a golf swing, where an actual golf ball is not used.

In the accompanying drawings I have shown one embodiment of the invention, it being understood that various changes in construction and materials may be made without departing from the principles shown. The device in general consists of a low flat framework to be placed on the floor or ground carrying an upstanding target or flap of resilient material at which the operator swings a golf club. This flap represents the golf ball and should be placed the same distance from the ground or floor as a golf ball stands when placed on a tee in the actual game. In many instances it will be found desirable to sink the framework in the ground or floor or to provide a mat for the feet of the operator bringing the feet on a level with the top of the frame in which the target is mounted.

The target of this device is one of the main features of this invention, and its construction makes possible the various indications given. This target consists of a resilient member supported on a rotating device so as to indicate direction. It has been found that the target operates satisfactorily and has great eiiiciency when constructed of about four-ply fabric molded in rubber in the form shown.

Referring now to the drawings, Fig. 1 is a top View of the device.

Fig. 2 is a side view taken from the lower side of Fig. 1.

Fig. 3 is a bottom view of the device shown in Fi 1.

Fig. 4 is a sectional view taken from the left of line A-A of Fig. 1..

Fig. 5 is a side view of the left-hand end of the device of Fig. 1 taken from the upper side of said figure.

Fig. 6 is a view of the device showing how it could be covered and would appear in actual use with only the target and indicators showing.

Fig. '7 is a schematic diagram of the device with mountings and mechanical details omitted to illustrate the principles of operation.

Referring now to the drawings, the device consists of a frame 2 of wood or metal as desired, having a pair of strips 3 and 4 secured thereto by bolts or screws. At the end of strips 3 and 4 and secured thereto is a metal mounting bracket 5 bent in the form shown in Figs. 1-3. On the top of frame 2 is secured a relatively soft pad 6 which may be of wood, fibre, rubber, or any other somewhat soft material. Secured to the under side of part 2 is a horseshoe-shaped bracket 1 and another similar bracket 8 is mounted on the upper side of part 2 under pad 6. A bolt or pivot 9 passes through the center of the circular ends of brackets l and 8 and arotatable bracket H! is pivoted on this bolt 9. Attached to the bracket i ll by means of plate I I is a molded rubber target l2 which has a small round knob on the front side thereof at 3, also of hard rubber or the like. If desired, a similar half sphere of rubber may be applied to or molded to the target opposite knob I3 to give a more accurate representation of a golf ball target. As indicated, the knob I3 of target l2 stands at the same height above pad 6 as a golf ball would stand above the ground on a tee. Immediately in front of target i2 is a rubber bushing I 4 set in frame 2 and having a bolt I5 inserted therein, the enlarged head of the bolt or pin resting flush against the bushing 14. Under frame 2 and passing through parts 3 and 4 is a pin 46 upon which a rocker arm i1 is mounted. One end of arm H is connected to the lower end of pin !5 and the upper end of the rocker arm is connected to arod 18. At the right-hand end of the device is an indicator drum IQ carrying designations '5)100--l59, etc., up to 550, indicating yardage. The indicator drum is mounted on a spool or drum 20 having ratchet teeth in one end thereof and this drum 20 is rigidly secured to a sleeve 2! rotatably mounted on a shaft 22 which has bearings in either side of bracket as shown. Also rigid on sleeve 2| is a lever 23 of angular shape, the lower end of which is connected to rod l8 and also to a spring 24 while the upper end lies against a pin 25 in one side of drum 20. A coil spring 26 has one end fastened to shaft 22 and the other end to drum 2|! and its tension is adjustable by rotating the shaft and locking it in place by a pin 21. The coil spring 26 normally tends to hold drums and I9 so that pin rests against the upper end of arm 23. Referring back to target I2, when this target is struck bya golf club,

it is driven forward in an are as indicated bythe arrows in'Figs. 2 and 7 so thatif squarely hitthe knob I3 strikes the head of pin I5 in itsresilient bushing I4. The force of the-blow is cornmunicated through the interlinked parts, arm II, rod- I8, and arm 23 to the pin 25 which is held against arm 23. Thus the force of'the blow tends to rotate the drum 29 and indicator I9- as clearly shown in Fig. 2 and especially in Fig. '7 against the tension of spring 26. A dog or spring 28 engages the ratchet teeth in'drum '20 to hold the indicator in the final position to which it is driven. The dog 28 is mounted on a release lever 29 which is pivoted to part 3 and rotatable on its pivot to remove dog 28 from the ratchet teeth' to permit restoration of drum 20 and'its indicator 1I9 after the distanceindication has been observed. The dog28'ha's a tension and rubs against the teeth on drum 20 to aid in calibration of the drum rotation with a given blow. The

tension of dog 28 against justed'bya set screw 30. V

Theabove-described interlinked mechanism is allthat is required to indicate distance: 'It is the drummay be adwell known that it isflvery important to a' golf 7 enthusiast to be'able to determine the direction of travel of his club head when striking the ball.

That is, if the'club head is drawn sidewise across the face of the 'ball at the moment of impact therewith, a whirling motion is given to the fall which eventually affects the direction of travel across the face or does not travel in a straight line, then the target will be' turned or twisted and knob I3 will strike on either side of pirr I5. Due to the manner in which thetarget is pivoted it will turn on its pivot. In order to cause this turning motion to give an indication to the player I I have provided a separate or associated interlinked mechanism and indicator as follows: At the lower outer ends of the plate II, to which target I2 is secured, I have linked a pair of rods 3| and 32. These rods 3| and 32 pass .to the ,7 far end of the device where they are again linked in the outer ends of a rotatable plate 33 pivoted as shown at 34. Above plate 33 is a drum 35 secured to plate 33 and rotatable therewith'and having a pointer 36 secured thereto. Now, as

. target I2 is rotated by any side pull of a club, it

communicates such turning or rotation to plate '33 and through drum 35 to pointer 36 ,so that the pointer will be moved to one side or the other across a scale 31. g If desired,'the scale may carry the designations hook and slice or other designations. In order to hold the pointer 36 and 2,069,650 I its drum 35 in the position to which it' has been rotated, I provide a brake 38 of semi-circular form having a small spring 39 holding it against drum 35 also preventing undue overthrow of the pointeri 36.

The brake 38 may also bev released" from drum 35 by release arm 29 which has a' link 49 for drawing the brake away against the tension of spring 39. 'In addition,- a spring l I is provided, one end secured to the rear or pointed end of bracket I0 torealign the pointer 39 and target I2 when the brake is released; This spring 4| is fastened at itsother end to the frame and its operation is clearly illustrated in Fig. 7. Fig.

4 shows the details of mounting of pointer 36 and drum 35.

It will therefore be seen that a simple and yet very effective form of practice device is shown which will give a large amount of interesting information to the practicing golfer.

form of the target lends itself to various other things which will be apparent in use. For instance, when a club swings too low on target I! The resilient the knob I3. willnot strikepin I5 squarely but; 4

due to the stretchjoftarget I2, will'overthrow its normal arc The only indication'will be loss of distance. In the same manner if the club swings too high, the same result will occur ex cept that knob I3 will underthrowjand strike justshort of pin I5;

Having fully described andf ascertained the I features and aspects of my invention, what I con-' sider to be new and desire'to have protected by United States Letters Patent in the appended claim." What is claimed is:

will be pointed out J as In a golf practice device, a target comprising a strip of rubberized fabric. said target projectin'g upwardly in. position to bestruckby a golf a club, a vertically movable non-elastiooperating,

element for controlling' a distance indicaton'an enlarged spherical segment shaped head on theupper end of said operating element, a yieldable" bushing throughxwhich said operatingfelement passes with its said head resting firmly against said bushing, a spherical segment shaped knob carried on the upper end of said target and posie tioned for striking the said head of said operat-.

ing element when the target is struck by a golf club, said target being mounted on a bracket which is pivoted for movement about a vertical axis so that when said target is struck squarely by a golf club the said knob on'the target will 7 strike the said head of the operating element center to center and move same downward and when said target is struck atan angle by a golf club said target will .move about the vertical pivot and consequently the said knob will strike the said head off center therebycausing a shorter downward movement of the said operating element.

AUGUST C. ENGH.

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