U.S. patent number 3,870,314 [Application Number 05/458,544] was granted by the patent office on 1975-03-11 for golf practice machine.
Invention is credited to Dominick Bertucci.
United States Patent |
3,870,314 |
Bertucci |
March 11, 1975 |
GOLF PRACTICE MACHINE
Abstract
An apparatus for use by a golf player in practicing golf club
strokes in a confined area, and which visually indicates the
driving force in terms of distances, so that the apparatus can be
used as a game; the device including a hollow platform having a
slot through which a vertical shaft protrudes upwardly and having a
golf-ball shaped knob on its upper exposed end for being struck by
a golf club which, when struck, causes the vertical shaft to pivot
forwardly about a horizontal, transverse shaft which at the same
time is forwardly slided in supporting slots against the action of
a return spring, the horizontal shaft having a plate attached
thereto with electric contacts thereupon which during travel
progressively engage with corresponding stationary sets of contacts
so to progressively close different circuits each having a
different indicator lamp designating a particular driving
distance.
Inventors: |
Bertucci; Dominick (Saint
James, NY) |
Family
ID: |
23821193 |
Appl.
No.: |
05/458,544 |
Filed: |
April 8, 1974 |
Current U.S.
Class: |
473/141 |
Current CPC
Class: |
A63B
69/0091 (20130101) |
Current International
Class: |
A63B
69/00 (20060101); A63b 069/36 () |
Field of
Search: |
;273/176,184,185,200,186,197 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Marlo; George J.
Attorney, Agent or Firm: Miller; Richard L.
Claims
Having thus described my invention what I claim as new and desire
to secure by Letters Patent is:
1. In a golf Practice Driving Range the combination of a base upon
which a golf player can stand, an operative unit in said base,
including a housing having a slot on its top side, an upstanding
shaft protruding upwardly through said slot, a ball secured on an
upper end of said shaft for being struck by a golf club held by
said player and means for indicating a quality of a driving force
by said player to said ball, said means comprising a scoring unit
separately located from said base, and an electric circuit
including switch means in said operative unit activated by movement
of said ball, and lamp indicating means in said scoring unit, said
ball shaft being pivotable about a cross shaft slidable in slots of
sidewalls of a housing of said operative units, said cross shaft
carrying electrical contacts engagable with sets of stationary
contacts of said housing, said contacts sets being in circuit with
different ones of a set of differently identified lamps of said
scoring units.
2. The combination as set forth in claim 1 wherein spring return
means are connected to said shaft and cross shaft.
3. The combination as set forth in claim 2 wherein switch means on
said side walls are in circuit with "left foul" and "right foul"
indicating means.
Description
This invention relates generally to golf playing apparatus which is
a new apparatus used for golf practicing for new players young or
old, to acquire the feel of a golf club so as to learn the proper
swing, to hit the golf ball the right way and to build up strength
for correct form in the swing.
A principle object of the present invention is to provide an
apparatus for allowing a golf player to practice his driving
strokes within a confined area such as indoors, and which visually
informs the player of the quality of his stroke.
Another object is to provide an apparatus which can be used either
as a practice device for individual players, or which can be used
as a game for a player alone or competitively between several
players.
Still another object is to provide an apparatus which is readily
portable, and which when not in use, requires a minimum storage
space.
Other objects are to provide a golf playing apparatus which is
simple in design, inexpensive to manufacture, rugged in
construction, easy to use and efficient in operation.
Further objects of the invention will appear as the description
proceeds.
To the accomplishment of the above and related objects, this
invention may be embodied in the form illustrated in the
accompanying drawings, attention being called to the fact, however,
that the drawings are illustrative only, and that changes may be
made in the specific construction illustrated and described within
the scope of the appended claims.
FIG. 1 is a perspective view of the invention shown in use.
FIG. 2 is a perspective view of the operative unit thereof.
FIG. 3 is a cross sectional view taken on line 3--3 of FIG. 2.
FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 3.
FIG. 5 is a perspective view of a spring shock absorbing
mechanism.
FIG. 6 is a cross sectional view on line 6--6 of FIG. 3.
FIG. 7 is a front view of a scoring unit of the invention.
FIG. 8 is an electric circuit of the invention.
FIG. 9 is a perspective view of a club head used with the present
invention.
FIG. 10 is a front elevation view thereof.
Referring now to the drawing in detail the reference numeral 10
represents a golf practice driving range according to the present
invention wherein there is a base 11 made of any suitable structure
such as wood, and which has a mat 12 secured upon its top wall 13,
the mat having green colored fibers 14 so to resemble grass, and
upon which a player 15 can stand while swinging golf club 16.
The base 11 includes an operative unit 17 contained in hollow
housing 18. A slot 19 on an upper side of housing 18, allows
horizontal travel of a shaft 20 protruding upwardly through the
slot, the upper end of the shaft having a golf-ball shaped ball
member 21 rigidly secured thereupon and which is intended to be
struck by the golf club 16.
The lower end of shaft 20 is formed into a loop 22 having central
opening 23 through which a cross shaft 24 extends; the shaft being
supported near each end in horizontal slots 25 of side walls 26 of
the housing 18.
The loop 22 is positioned along the cross shaft 24 so that the
shaft 20 is located midway between side walls 26. Opening 23 is
oversized respective to the diameter of cross shaft 24 so the ball
21 can be pivoted into any direction. In order to normally maintain
the shaft 20 vertically upright. One end of an elastic cord 27 is
connected around shaft 20, and the other end of cord 27 is passed
around rotatable pulley 28 supported on cross shaft 29, and the
terminal end of cord 27 is attached to hook 30 secured to eye screw
31 anchored in stationary block 32 inside the housing. To prevent
the shaft 20 to droop sidewardly, the loop 22 is positioned between
washers 33, that are normally urged toward the loop by compression
coil springs 34 fitted around cross shaft 24. The other ends of
springs 34 bear against metal washer 35 positioned adjacent rubber
washer 36 placed against inner side of the side wall 26. Thus the
ball 21 is in position for being struck by the head 37 of the golf
club 16, as shown in FIG. 3.
The golf club head 37 includes a forwardly projecting pad 38 for
engaging the ball 21.
When the club head 37 is moved in direction shown by arrow 39, in
FIG. 3, the struck ball causes the shaft 20 to pivot forwardly
about the cross-shaft but the force of the club blow also causes
the cross shaft to slide in a forwardly direction along slots 25,
against the force of return elastic cord 27. The amount of the
force by the club blow is visually indicated at a separate scoring
unit 40 for being seen by the player, as is accomplished by an
electro mechanical structure 41.
The structure 41 includes a plate 42 of insulation material
slidable in tracks 43 secured to one of the side walls 26. The
plate 42 is attached to the cross shaft by means of the cross shaft
passing through a transverse opening 44 in the plate. A pair of
electric contacts 45 and 46 are mounted on the plate 42, the
contacts being electrically engagable with rows of contacts 47 and
48 respectively that are stationarily mounted on the housing
sidewall.
Each pair of contacts 47 and 48 are in series circuit with one of
the lamps 49 located inside the scoring unit 40. A transluscent
window 50 is in front of each lamp 49, each window being of a
different color and each window having scoring numbers 51 imprinted
thereupon, as shown in FIG. 7.
Additionaly, the scoring device indicates a "left foul" and "right
foul" in case the ball 21 is struck toward either side instead of
being struck straight ahead. This is accomplished by the ball 21
striking either of the switch plates 52 located upon each side wall
26, thus momentarily closing a switch 53 placed under the plate 52,
and thus closing an electric circuit to a specific one of the lamps
on the scoring unit which indicates a "foul."
When the unit is placed in front of the player as shown in FIG. 1,
the player sees which color of light momentarily goes on so to know
his score. The scoring unit 40 is connected electrically to the
operating unit 17 by extension cord 54 and plug block 55 engaging
socket block 56. An extension cord 57 with plug 58 is attachable to
an electric supply.
After a play, the cord 27 returns the shaft 20 into upright
position. The cross shaft 24 and plates 42 are returned back to
starting position by a tension spring 59 on each side of the
housing 18, each spring at one end being attached to the cross
shaft and the spring other end being attached to eye screw 60
anchored in the housing.
A shock absorbing mechanism 61 is provided so to absorb the force
of the ball 21 as the ball pivots around the cross shaft 24 when
struck by the club. Mechanism 61 comprises a set of transverse
tension coils springs 62 wrapped inside a rubber sleeve 63; the
spring ends being secured to the side wall 26.
Another transverse tension coil spring 64, secured at its ends to
sidewalls 26, serves to stop the pivotal return travel of the shaft
20. A dimple 65 on the top wall is provided to receive the ball 21
when the return motion is stopped.
Thus a golf playing apparatus is provided.
While certain novel features of this invention have been shown and
described and are pointed out in the annexed claims, it will be
understood that various omissions, substitutions and changes in the
forms and details of the device illustrated and in its operation
can be made by those skilled in the art without departing from the
spirit of the invention.
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