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Патент USA US2403590

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' July 9, i946.
Filed June 25, 1945
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Patented July 9, 1946
Isadore Edelman, Detroit, Mich.
Application June 25, 1945, Serial No. 601,477
1 Claim. (Cl. 193-40)
This application relates to a ball holding and
release mechanism for games or the like. Such
a mechanism holds balls from rolling down a
track, and may be operated by the insertion of a
is formed as shown to provide a stop for the bar
I2 under the tension of the spring I5.
It will be observed that in a cabinet or other
construction having an opening adapted to be‘
coin into a coin receiver so that the mechanism
moves to release the balls which are thereupon
closed by the closure panel I, the electromag
net portion of the mechanism herein disclosed
free to roll down the track.
will be within the closed cabinet and the only ex
The unitary ball holding and release mech
posed portion will be the gate I3 and the holding
anism of my invention is illustrated in the ap
bar I2.
pended drawing. In the drawing,
It will also be observed that the unitary mech
Fig. 1 is a front view of the mechanism;
anism herein disclosed can be inserted into a cab
inet and mounted on a portion thereof as a unit
Fig. 2 is a top plan view; and
Fig. 3 is a left end view.
The drawing shows a cabinet wall A having a
tunnel or track B, whose wall C has an opening
D, normally closed by a closure panel I. Dia
grammatically shown at 2 is a ball, which may
roll in the track in the direction of the arrow
preassembled so that the mechanism as a unit
shown. Projecting rearwardly from the panel is
may be mounted in place, by unskilled workers
merely by using mounting screws 2I for mounting
the closure panel I in its place on the opening
of the cabinet adjacent to the track along which
roll the balls.
The unitary mechanism may be fabricated and
a bracket 3 upon which is mounted an electro
who need only to mount the closure panel by its
magnet 4 whose feed wires 5 are connected to a
mounting screws and to connect the feed wires on
coin controlled switch and an electric current
the magnet to the electrical circuit, which op
source, not shown, arranged so that upon the de
erates that magnet.
posit of a coin, the switch is closed momentarily
Similarly, replacement of a mechanism by an
so that the electromagnet 4 is energized momen 25 other, for repair purposes, is a very simple matter,
The magnet has a plunger I 0 connected by a
wire II to a holding bar I2 which normally forms
a stop for the ball holding gate I3, holding the
ball gate in the position shown, wherein it blocks
the movement of the balls in the direction of the
arrow. A stop screw I4 limits the movement of
the gate in the direction opposite the arrow
shown. A tension spring I5 having one end se
cured to the panel and the other end secured to a
rod I6 fastened to the holding bar I2 normally
pulls the rod I6 and the bar I2 forwardly on the
hinge I ‘I which mounts the holding bar I2 and
it is the tension of this spring that is overcome by
the electromagnet 4. When the magnet is ener
gized momentarily, it pulls the bar I2 rearwardly
on hinge I‘! and the bar releases the gate I3 which
thereupon moves rearwardly on its hinge I8 to
permit the balls to roll past the gate and the hold
ing bar in the direction of the arrows shown.
Since the closing of the switch for the magnet is
momentary, as soon as the balls have moved be
yond the gate and the holding bar, these are re
turned to the positions shown by the spring I5.
The panel is provided with several openings I 9
permitting the rod I6, the wire II, and the end
20 of the bar I2 to pass through the panel from
removal requiring only the disconnecting of the
wires 5 and'the removal of the mounting screws
for the panel I.
Now having described the unitary ball holding
and release mechanism herein disclosed, refer
ence should be had to the claim which follows.
I claim:
A unitary ball holding and release mechanism
comprising a panel adapted to be mounted adja
‘ cent a ban track, an electromagnet mounted on
one side of said panel, a ball holding gate hingedly
mounted on the other side of said panel, a gate
holding bar hingedly mounted on the gate side of
the panel and having a stop portion passing
through said panel to engage the magnet side of
the panel, a plunger passing through the panel to
connect the magnet to the gateholding bar, a rod
secured to the bar and passing through the panel
to a point near the magnet, and a spring secured
to the magnet side of the panel and to the rod at
a point near the magnet for normally biasing the
bar into gate holding position, said spring being
arranged to be overcome upon energization of the
magnet which moves the bar out of gate holding
position, and a stop for limiting movement of the
gate from the ball release position past the ball
holding position under bias of the spring, said
panel having clearance openings for the stop por
the front or track side thereof to the rear or mag
tion of the bar, for the plunger, and for the rod.
net side thereof. The end 20 of the holding bar 66
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