U.S. patent number 3,574,349 [Application Number 04/761,583] was granted by the patent office on 1971-04-13 for pendulum-type golf putter.
Invention is credited to Norbert Victor Kropp.
United States Patent |
3,574,349 |
Kropp |
April 13, 1971 |
PENDULUM-TYPE GOLF PUTTER
Abstract
A golf putter having a shaft the axis of which is
subperpendicular to the sole-edge of the putter-face, the lower end
of the shaft overlying the putter head, the shaft including a grip
of substantially greater diameter than the lower portion of the
shaft, said grip being of elongated, cross-sectionally segmental
configuration to present a flattened rear side portion designed to
lie against the player's forearm when supinate. The entire length
of the shaft is disposed between two spaced vertical planes
extending upwardly from the toe and heel of the head.
Inventors: |
Kropp; Norbert Victor (Port
Credit, Ontario, CA) |
Family
ID: |
25062652 |
Appl.
No.: |
04/761,583 |
Filed: |
September 23, 1968 |
Current U.S.
Class: |
473/293; 473/294;
473/340 |
Current CPC
Class: |
A63B
53/007 (20130101) |
Current International
Class: |
A63B
53/00 (20060101); A63b 053/14 () |
Field of
Search: |
;273/77,80,80.2,81,81.3,162,164,183,193,167,168 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Pinkham; Richard C.
Assistant Examiner: Apley; Richard J.
Claims
I claim:
1. A golf club having a head and a shaft, said head being
transversely horizontally elongated and including a substantially
vertical front face, a back side, a toe and a heel, said shaft
having a relatively short lower shaft portion which is connected to
the top of said head at the heel and extends obliquely upwardly
above the head substantially toward the toe, said shaft also having
a relatively long and straight upper shaft portion which
constitutes a continuation of and extends upwardly from the toe end
of said lower shaft portion and angularly toward the heel, said
upper and lower shaft portions being disposed in a common plane
which is parallel to and lies wholly between two spaced vertical
planes extending upwardly from the front face and the back side of
said head, and the entire length of said shaft being disposed
wholly between two spaced vertical planes extending upwardly from
the toe and heel of the head.
2. The device as defined in claim 1 wherein said head also includes
a lip projecting rearwardly from said back side of the head.
3. The device as defined in claim 1 wherein said upper shaft
portion is provided with a hand grip having a flat back surface,
substantially coplanar with said vertical plane of said back side.
Description
The present invention is specifically designed for a novel method
of putting, and one which is not contrary to the rules of golf. It
is also designed to fulfill and advance, by a novel construction
designed to implement a novel concept, the following three
important principles of putting, that is to say:
(1) Direction: i.e. the maintenance of the face or of the putter
head at right angles to the line between the ball and the cup at
the moment of impact with the ball.
(2) Stroke: i.e. quality of impact between the putter head and the
ball and which ideally involves making impact with the ball at the
conclusion of a low, shallow arc as close to the grass as possible
and as closely resembling the swing of a pendulum as possible.
(3) Stance: i.e. perfect and comfortable immobile equilibrium
combined with a perfect view of the cup location.
The invented putter facilitates implementation of the foregoing
three principles by making it easier for the player to maintain the
face of the putter head at right angles as aforesaid, facilitating
a natural pendulumlike action of the putter as an extension of the
putter-holding arm and by introducing a stance which is natural,
comfortable and with the whole body facing the ball, with the arm
swing involved being essentially that which is the arm swing
performed in the act of bowling.
Heretofore, putting has always been performed with the player
facing a direction at right angles to the intended direction of the
travel of the ball to the cup. With all variations of putting when
the body is at right angles as just stated, a putter comprised of
shaft and head, the face of which is at an obtuse angle to the axis
of the shaft has been essential and unavoidable--unless the putter
is of the illegitimate mallet-type i.e. is essentially a modified
form of croquet mallet.
Conventional methods of putting comprise (i) wrist putting, and
(ii)arm and shoulder putting. In wrist putting there is high
liability to angular variation of the putter shaft resulting in
uneven pendulum strokes, a smaller and higher arc, and
.div.rolling" of the wrists which results in the putter blade (or
head) being "fanned open" on the back swing.
Hazards of imperfect arm and shoulder putting reside in large and
higher arcs, and pivotting of the shoulder which, like wrist
putting, also opens the putter-head on the back swing with
resultant loss of control and a pendulum swing which is through a
conic path rather than through a plane sectorial path.
Incoordination results through the involvement of movement in too
many parts of the body.
By use of the present method and the novel putter invented for the
employment of such method, no distortion of the body is involved in
the sense of twisting, as in conventional putting. Instead, the
putting swing takes place through a stiff-arm hinging action from
the shoulder joint in which the entire arm together with the length
of the putter shaft right down to the head thereof may be regarded
as a single unit. By means of such a swing the weight of the head
alone if desired can be employed to produce the needed momentum.
The swing is straight toward the hole with no involvement of any
conically deviating component therefrom.
It will be clear from what has already been stated that if the
player is facing the cup with the whole body he has greater control
of the travel of the ball since eyes and the swinging arm are
acting in perfect coordination with each other. The only
contortions involved generally speaking in connection with the
present novel putting stance are (1) usually some bending of the
legs at the knees, and (2) a slight curvature at the waist in the
frontal plane so that the shoulder hinge, the adjacent eye, the
right (lower) hand, and the ball are all in approximately vertical
alignment.
The invented putter is so held that the palm-side of the hand of
the arm which swings the putter is, prior to closing around the
shaft, substantially at right angles to the sagittal body plane,
i.e. facing the cup, wherefore, in other words, the forearm has
been rotated as from the elbow. The shaft is so designed that the
grip thereof includes a flattened portion which may be steadied
against the rotated forearm by the flat palm of the upper (left)
hand which will be placed against the upper end of the grip above
the elbow. The flattened grip portion is accordingly parallel with
the face of the head but on the opposite (rear) side of the
club.
An important novel feature of the invented putter also resides in
providing a shaft the axis of which is subperpendicular to the sole
of the putter-head or blade, but with its lower end overlying the
head, such lower end including an acutely angled portion relative
to the head, the plane of this acutely angled portion being
parallel with the putter face so that the complete ball is clearly
visible below it whereby the sweet spot on the face of the club may
be more accurately located. By the expression "sweet spot" is meant
in this specification, the point-area of most perfect impact; a
point or point area which can be described with reference to mass,
torque, momentum and the like, but which is generally understood by
the above expression as being the point or area of the most
efficient impact, by more practiced players.
As a result of this disposition of the grip, with reference to the
lower portion of the shaft, it will be apparent that the player
with an arm hanging vertically beside him, which arm is rotated
from the elbow downward as aforesaid, has only to bend his body or
head slightly, for one eye to be directly over, and in the vertical
"cup plane" of the grip and the ball wherefore he is obviously in a
position of particular mechanical and ocular advantage as to line
of flight and sight between ball and cup. The coincident plane
referred to is achieved by obtusely angling the lower portion of
the shaft above said acutely angled portion, by approximately
10.degree. as will become clearly apparent hereinafter. A further
important novel feature of the presently invented putter resides in
recognition and utilization of the observed fact that when the
radius of the forearm is rotated about the ulna into supination, a
small angle exists between the axis of the upper arm and the axis
of the (supinate) forearm such that the latter diverges outwardly
and downwardly slightly from the elbow. Thus, when the present club
is held with the right arm in supination and the upper part (above
the elbow) of such arm tucked against the player's side, the putter
shaft will lie parallel with the forearm while the heel of the head
is fairly close to the outer edge of the adjacent foot (an inch or
somewhat more as a rule) in view of the obtuse angulation at the
lower end of the shaft toward the players adjacent foot.
With the foregoing considerations in view and such other objects,
purposes of advantages as may become apparent from consideration of
this disclosure and specification the present invention consists of
the inventive concept which is comprised, embodied, embraced or
include in the method, process, construction, composition,
arrangement of parts, or new use of any of the foregoing, herein
exemplified in one or more specific embodiments of such concept,
reference being had to the accompanying FIGS. in which:
FIG. 1 is an elevation of the invented putter as viewed from the
cup.
FIG. 2 is an elevation of the invented putter as viewed from the
left side of FIG. 1.
FIG. 3 is a pictorial representation of a player whose frontal
plane is intended to be parallel with the picture plane, employing
the novel putting method herein disclosed, and the novel putter for
carrying out such method.
FIG. 4 is a section on the line 4-4 of FIG. 1.
In the drawings like characters of reference designate similar
parts in the several FIGS.
The golf putter according to the present invention comprises, in
combination, a shaft generally designated 10, and a head generally
designated 11. The head includes a sole 12, a face 13, a heel 14,
toe 15, and a lower faced edge 16 at the junction of the sole and
face.
The shaft 10 is formed of a lower shank 17 and an upper grip 18,
the common axis of the shaft including shank and grip being
designated 19. At least the axis of the greater part of shank 17 is
in acute superior angular relationship to face edge 16 and occupies
a stratum of space 20 lying at least predominantly within that pair
of spaced paralleled planes 21 and 22 the former of which, when
edge 16 is horizontal, touches the toe 15 while plane 22 touches
heel 14, these planes being both horizontally and vertically at
right angles to edge 16. In stating they are horizontally at right
angles to edge 16 it is meant that if the planes 21 and 22 were
viewed in plan (as in the accompanying FIG. 4) they would also be
at right angles to edge 16 (and of course face 11).
The shank 17 includes a portion generally designated 23 which is
acutely angulated as at 24 relative to head 11 in the vicinity of
the lower end of the shank, the vertical axial plane 25 of said
acutely angled portion being parallel with face 11. The acutely
angled portion aforesaid diverges from the heel end of head 11, and
an obtuse interior angle 26 is formed between the divergent upper
end 27 of said acutely angled portion, and the adjacently superior
portion 28 of the shank 17. The obtuse angle 26 and the angle of
said acutely angled portion are on opposite sides of the shaft
10.
It will be observed by best reference to the accompanying FIG. 1
that a vertically disposed socket 29 is interposed between the heel
14 of head 11 and the diverging shank portion 23. This is to be
preferred for practical manufacturing and other purposes but the
acute angulation of the lower end of shank 17 if desired commence
right at the heel 14.
Grip 18 is of substantial length relative to the total length of
the shaft. At right angles to its longitudinal axis, the grip-area
is seen to be substantially greater than that of shank 17. The grip
18 includes a grip surface 31 which is predominantly rounded, and
preferably semicircular as viewed at right angles to its
longitudinal axis 19, but the surface of the grip 18 also includes
a portion 32 which is flat and intended to be held in interfacing
contact with the front surface of the player's forearm 33 when
supinate to facilitate the prevention of unwanted axial twisting of
shaft 10. The portion 32 is upon the opposite side thereof to that
of face 13, and is of substantial length relative to the shaft 10,
such flat portion 32 being the chord of a segment as clearly to be
discerned from an inspection of the accompanying FIG. 4
A vertical 33 perpendicular to edge 16 and passing through the
center of face 13 will be seen to intersect the shaft 10 at the
junction of the shank 17 and grip 18, in other words at locus 34.
This, as a rule, will be sweet spot of the head 11 and the locus of
most perfect impact for the ball 35. The slight angle previously
referred to which is made between the forearm 33 and upper arm 36
is designated by the axis 37 and 38 of the portions of the arm
respectively, and from an inspection of FIG. 3 it will be apparent
that the present putter functions as an extension of the supinate
forearm and the axes 37 and 19 will be substantially parallel when
the hand 39 (with palm in front) is wrapped around the lower
portion of grip 18.
From all the foregoing it will be clearly apparent that the right
eye of the player depicted in the accompanying FIG. 3 is
substantially on the line 33 of FIG. 1, in line with hand 39 and
the ball 35 which, when the putter is vertical as in the
accompanying FIG. 2 will be perceived by the said eye substantially
as shown in the accompanying FIG. 4. As a result, a very accurate
pendulum swing and lineup with cup 40 is achieved, it being
understood that the left hand 41 will overlie the upper end of grip
18 to hold the putter steady either at or just above the elbow. As
shown, the players right foot 42 is preferably a little behind the
left foot so that the inner edge of the right foot (in the vicinity
of the ball thereof) can be tucked more or less into the arch of
the left foot. Thus the heel 14 of the club can be very close to
the outer edge of the players right foot or shoe.
It should finally but importantly be added in connection with the
invention which has been described and is illustrated in the
accompanying drawings that the same may if desired be used in the
manner of a conventional putter. By this is meant that, if desired,
a player may, with the invented putter address the ball in the
conventional way, standing at right-angles so to say to the
position illustrated in the accompanying FIG. 3. Then he still has
the same advantage of "stiff-arm" pendulum action which has been
described in detail.
It is to be emphasized in this last connection that one cannot
obtain the highest efficiency with this club by the alternative
conventional approach method just referred to. However, the
advantage of being able to employ the putter this way is that it is
a highly convenient way of introducing the new method of holding
such a putter. In other words, new users of the same may wish to
learn first of all to hold it as has just been described, before
turning into the position of the accompanying FIG. 3.
Various modifications can be made within the scope of the inventive
concept disclosed. Accordingly, it is intended that what is set
forth herein should be regarded as illustrative of such concept and
not for the purpose of limiting protection to any particular
embodiment thereof, and that only such limitations should be placed
upon the scope of protection to which the inventor hereof is
entitled, as justice dictates.
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