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Патент USA US2120172

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June 7, 1938.
2,120,172
c. E. BURNETT ET AL
SAFETY DEVICE FOR PUNCH BOARDS
Filed Aug. 5 ,
1936
6327 31
26,0
7
I 372
$49. 11.
‘
wumko'ns
CHARL ES E- B'UR/VE 7' 7"
1N0 .0 MA Y
GUM/MAM
Patented June 7, 1938
2,120,172
UNITED STATES
PATENT ' OFFICE
2,120,172
_
SAFETY DEVICE FOR PUNCH BOARDS
Charles E. Burnett and 0 May,,Punta Gerda, Fla.
Application August 5, 1936, Serial No. 94,464
'7 Claims. (Cl. 273-139)
The present invention relates to punch board -
games of the well-known type that are used for
amusement and in various ways to assist in the
sale of merchandise.
One drawback in the use of such boards has
been the custom of unscrupulous persons of sur
reptitiously punching the boards without inform
ing the attendant, or the other players, of such
acivity with a consequent loss of revenue to the
establishment, or an unfair advantage resulting
to the person.
Certain devices have been proposed, whereby
an indicating mechanism is associated with the
punch or with the board, whereby, when a punch
is made, a visible or audible signal is actuated.
These devices, however, apparently have not
proved commercially successful, and one reason
appears to be that while in order to actuate the
signal a particular punch must be used with the
20 board, they have not provided any means that
have necessitated the use of the particular punch
in order to successfully operate upon the board.
As a consequence nails, matches or other instru
ments can be used to punch the board without
' actuating the signal.
One object of the present invention is to pro
vide a novel system wherein the punch is asso
ciated with a signal or indicator, and including
novel means whereby the use of an instrument
other than the proper or authorized punch, is
prevented.
,Another object is to provide a board having
novel means whereby only a proper punch may
be used to operate successfully upon the board.
Still another object is to provide such a struc
ture which will not increase the di?iculty of or
complicate the punching operation.
In the accompanying drawing:
Figure 1 is a somewhat diagrammatic eleva
40 tion showing one embodiment of a system using
the device.
Figure 2 is a perspective view of a punch board.
Figure 3 is a detail elevation, partly in section.
Figure 4 is an enlarged detail plan view.
Figure 5 is an enlarged detail vertical section.
Figure 6 is a broken plan view.
Figure '7 is a perspective view of a form of
punch needle.
'
Figure 8 is a view similar to Figure 6 showingr
a modi?cation.
Figure 9 is a perspective view showing a modi
fled form of punch needle used in the modi?ca
tion shown in Figure 8.
Figures 10 and 11 are perspective views show
b1 (it ing still other modi?ed forms of punch needle.
Describing the drawing more particularly, a
punch board II has a usual body portion i2
formed of any suitable material, and having
therethrough vertically disposed bores iii, in
which are contained indicators II, which may ad
vantageously be folded strips of paper bearing
numbers or other indicia. The indicators l4.
contained in the bores, are intended to be removed
in the well-known manner by means of a punch
ing instrument inserted through the top of the
board. A special punching device is designated
generally I5, and comprises a casing l8, within
which may be mounted a counting or registering
mechanism H, which is operated to register each
stroke of a plunger IS in a well-known manner. 15
The plunger i8 extends from the casing l5, and
the end has a socket I9, which is provided with
holding means, advantageously as shown clearly
in Figure 5, as threads, 20.
The plunger I8 is also provided with a circuit 20
closing device, shown in Figure 1 as a spring con
tact 2| mounted upon the inner end of the
plunger.
Associated with the spring contact 2|
is a ?xed contact 22 assembled with the device
It so that upon the inward movement of the 25
plunger i8, contact will be made between the
members 2| and 22. The members 2i and 22
are arranged in a circuit, including wires 23,
a source of power, and a signal, as a bell, 24. Itv
will be appreciated that a visual signaling device ' 30
may be substituted for the audible device 24.
Mounted in the threaded bore 20 of the plunger
by means of a threaded head 25, is a punching in
strument or needle which comprises a shank 25
extending from the head 25.
35
The punch board II has associated with it and
overlying the body portion ii, a sheet of fabric
21 which is preferably relatively stiff, and to
some extent puncture-resisting, so that when the
needle 26 is pressed downwardly over one of the
bores Hi, the fabric 21 will offer sufficient re
sistance to the downward movement of the punch
to cause the plunger ill to move inwardly with
respect to the casing l6, thereby causing the op
eration of the register I‘! and closing the switch 45
2l-—22.
And overlying the fabric 21 may be a
guide sheet 21a having perforations that over
lie the bores lit to indicate their positions.
From the above description, it will be appre
ciated that when the device I5 is used to punch Cr
one of the indicators H from the board, that
the plunger [8 will be pressed inwardly by the
contact of the instrument 26 with the paper,
and a signal will be given, indicating that a punch
2
2,1ao,172 '
is being made and the punch will be registered
fully using unauthorized implements upon the
on the counter.
punch board.
_
This arrangement is very‘ satisfactory, but it
is desired to provide means whereby other ‘instru
ments, such as nails or matches will be excluded
from the punch board, since their use would
avoid the operation of the signal and counter.
In order to provide such a structure, the follow
ing arrangement is provided.
The punch member 20 is formed with a special
cross section, which may be of anysuitable de
sign.‘ As shown in Figure 7 it is crescent shape,
and comprises a wall 28 surrounding a bore 29,
and having a slot 30 along one side. Assembled
with the body portion I! of the board II is a
guard plate 3| which is preferably mounted be
tween the body portion i2 and the fabric sheet
21. The guard plate is made of any material
which will suitably resist distortion, and is pref
20 erably made of a metal of su?icient thickness to
provide the necessary resistance.
The guard plate 3| is provided with a plurality
of openings 32 that are so spaced that when in
assembled relation with the body portion ll! of
25 the bores, one special opening lies within the area
of each of the bores. The openings are shaped
to correspond with the cross section of the punch
ing instrument 26, so that the material surround
ing them will closely engage the instrument and
30 will permit its passage, but at the same time will
exclude the introduction into the bores I4 of
instruments which are not properly shaped to
pass through them.
The operation of this arrangement will be clear
35 from the foregoing description.
‘
The-advantages of-the described device will be
readily appreciated. Its use will prevent a
punching of a board unknown to the attendant or
owner by the use of improper implements, such as
matches or nails. The fact that the plate can be
made of such very thin material, renders its cost
very low. It will of course be appreciated that
the device may be used without an indicator oi.’ 10
any sort, merely by the use of a punch that is
arranged to pass through the openings of the
guard plate, the intention here being that it will
simply prevent unscrupulous persons from apply
ing other implements and the attendant may 15
keep the proper punch under his control, or it
may be used with a signal, but without a counter.
Counting devices, such as indicated at H are
generally provided with turn-back devices hav
ing operating knobs extending through their cas 20
ings. While such a device is advantageous in the
counter used in connection with this device, it
will be appreciated that it would be undesirable to
afford the opportunity of resetting the counter
to persons using the punch. To obviate this pos 25
sibility the turn-back operating device is entirely
enclosed in the case and the operating shank ll
terminates at or below the surface of the case, so
that it cannot be grasped, and the end of the
shank is provided with a keyhole 39, into which a 30
key may be inserted to reset the counter.
From the foregoing, it is thought that the
construction, operation and many advantages of
the herein described invention will be apparent to
those skilled in the art, without further descrip 35
In Figures 8 and 9 a modi?ed form of punching
tion, and it will be understood that various
instrument and a corresponding form of guard
changes in the size, shape, proportion and minor
plate are shown. In this modi?cation the open
details of construction may be resorted to with-_
out departing from the spirit or sacrificing any
40
of the advantages of the invention.
ings 33 of the guard plate are formed by a plural
40 ity of thin slots 34 that are joined together at
one
and the slots radiating from a center.
The needle 35 being used with this form of guard
plate, comprises a threaded head 36 for engage
What we claim is:
i. In a punch board including a body having
a plurality of bores therethrough for containing
gular adjustment to correspond with the arrange
ment of the slots 34. In this form of device,
indicators, a guard plate of deformation-resist
ing material assembled with the body and having 45
narrow slots therethrough, the said slots being
associated respectively with the different bores,
the said guard plate at the edges of the slots pre
very thin blades may be used due to their mutual
venting the removal of indicators from the bores
ment in the socket IQ of the plunger and com
45 prises a plurality of thin blades 31 equal in num
ber to the slots and arranged as to size and an
50 strengthening effect, and it has been found that
blades of steel of a thickness of three thousandths
of an inch are perfectly satisfactory, the slots
being made four thousandths of an inch in width
to' provide ample clearance for the blades 31 and
55 at the same time reduce the possibility of the
introduction of other instruments to a minimum.
The ends of the blades of such thickness, form a
thrusting surface that is ample to push the indi
cators I4 from the respective boards.
60
Figures 10 and 11 disclose additional forms in
which the punching instruments or needles may
be made if desired. From the illustrated forms
it will be clear that a great variety of shapes may
be used, and that any shape which proves satis
factory is included in the scope of the invention.
The material making up the needle may be very
thin, ordinarily from three to four-thousandths
of an inch being ample, because of the arrange—
ment of the needles to provide the necessary
stiffness to punch through the board and thrust
out the indicator. The advantage of such thin
material is, of course, that it allows the corre
sponding openings in the guard plates to be very
75 line and thus increase the diiiiculty of success
by an instrument other than one having the cor 50
rect cross sectional design to pass through the
slots permitting the insertion only of an instru
ment having a cross section ?tting‘the said slots.
2. In a punch board game in combination, a
board having bores therethrough for containing 55
indicators, a guard plate assembled with the
board and having openings associated with the
bores, the said openings each comprising a plu
rality of narrow slots joined together at one end
of each, and a punch comprising a plurality of 00
blades, each having an edge joined to the edge
of the other blade, and arranged to correspond
to the arrangement of the slots, the ends of the
blades forming a thrusting surface for engaging
the indicators in the bores.
,
65
3. In a punch board game including a board
to be operated upon by a punch, in combination,
a punch havingia thin blade for operating upon
the board, a device operated by said punch for
indicating each operation of the punch upon the 70
board, and a guard plate assembled with the
board and having a plurality of narrow slots to
permit the punch to be introduced through them
to operate upon the board, the portions of the
guard plate surrounding the slot preventing the 75
3
9,120,172
introduction of instruments other than thin
blades.
4. In a punch board including a body having
a plurality of bores therethrough for containing
indicators, a guard plate of deformation-resist
ing material assembled with the body and hav
ing openings therethrough that register with the
bores, the said guard plate having projections
that extend into the areas of the bores that re
10 strict the openings and permitting the insertion
only of an instrument having a cross section
shaped to pass the projections.
5; In a punch board including a body having
a plurality of bores therethrough for containing
indicators, a guard plate of deformation-resist
ing material assembled with the body and hav
ing therethrough a plurality of curved slots, the
said slots being associated respectively with the
bores 01 the body, the portions of the guard plate
surrounding the slots permitting the insertion
only of an instrument having a narrow blade or
proper dimensions and correctly curved to pass
through the slots.
6. In a punch board game, in combination a
body having a plurality of bores therethrough for
containing indicators, a guard plate of deforma
tion-resisting material assembled with the body
and having an opening associated with each of
the bores, projections carried by the guard plate
and extending respectively into the areas oi’ the
bores to restrict the size and shape 01' the open
ings, a punching instrument having a blade of
proper cross section to pass the projections oi’
the guard plate, and means associated with the
punching instrument to indicate each punching 10
operation performed by it.
'7. In a punch board game, the combination
with a body having a plurality of bores there
through for the reception of indicators to be re
moved by a punch, and a punch having a thin
blade curved transversely to impart rigidity
thereto and to a?ord a bearing surface at the
end, of a guard plate of deformation-resisting
material assembled with the body and having
slots therethrough registered with the bores, the
said slots being 01' substantially the same size
and shape as the cross section or the blade of
the punch.
CHARLES E. BURNE'I'I‘.
0 MAY.
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