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Патент USA US2114534

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APl'il 19, 1933-
Filed Dec. 6, 1935
I“ I I"
5 Sheets-Sheet 1
April 19, 1938. _
H, s, JOH'NS
_ 2,114,534
Filed Dec. 6, 1935
17.1”. ‘
s Shee‘ts-Sheet a
1 -13.
Patented Apr. 19, 1938
Herman S. Johns, Oklahoma City, Okla., assignor
to Dual Parking Meter Company, Oklahoma
City, Okla., a corporation of Delaware
Application December 6, 1935, Serial No. 53,204
9 Claims.
(01. 194-6) ‘
showing graduations in fractions of time instead
My invention relates to meters, and more par
ticularly to coin operated electrically controlled
meters for collecting for vehicle parking, and the , '
The prime object of the present invention is-the
in construction, may be cheaply manufactured,
keeps the coin visible from opposite sides-of the
device throughout the parking time, utilizes the
in coin for the purpose of indicating the elapsed vand
uneiapsed time, and which utilizes the coin for
making the electrical contact necessary for the
- '
Other objects of the invention are to provide
“ a‘d'evice of the class described which is new, novel,
Figure 6\is an elevational sectional view of the
housing installed upon the upper portion of the
base member, shown in Fig. 2;
provision of a device of this class which is simple
operation of the device. »
of in minutes;
Figure '7 is a transverse sectional'view' taken
substantially along the line 1-1 of Fig. 6;
Figure 8 is a bottom view of the head showing‘
in detail the operating mechanism, looking up
Figure 9 is a diagrammatic view showing the ,
electric system;
Figure 10 is an elevational view of a spiral shaft
which may be used in place of the one shown in
Fig. 6;
practical and of utility; which has fewermoving
parts than other devices heretofore designed for
Figure 11 is a perspective view of a removable
contact rod, which may be substituted for the
such purpose; which utilizes the coin as a means
rod shown in Fig. .6;
_for indicating whether the parking space being
used has been paid for; which may be easily and
Figures 12, 13, 14,- and 15 are side elevational
views of different toothed discs adapted for use in 20,
quickly adjusted to accommodate various periods‘ driving the spiral shafts at various speeds;
of parking time; which displays the last coin in
serted so as to prevent the improper use of a slug;
which utilizes the coin to make an electrical con
nection and contact for rendering the device op
erable; which prevents the coin from being in
the housing showing a coin in its passage there
jured by the electrical contact; which permits the
Figure 18 is a fragmentary front or back ele
vational view of a different embodiment of the
housing the view of which is the same from the
front and back, showing a coin in its passage
therethrough presented toview through an ar
coin to be seen from both sides of the device at
Figure 16 is a perspective view showing the re
lation of an installed device with a street curb;
Figure 17 is a front or back elevational view of
various points upon a stationary scale; which
provides means for conveying a coin through a,
coin-indicating container -' at 'a predetermined
speed; which utilizes the coin to divide the indi
cated time for parking and to permit the easy and
quick determination of what part of the time has
5 elapsed and what part is unelapsed; which is du
rable; and, which will be efficient in accomplishing
all the purposes for which the device is intended.
With these and other objects in view as will
more fully appear hereinbelow, my invention con
40 sists in the construction, 'novel features, and com
bination of parts hereinafter more fully described,
cuate window;
Figure 19 is a fragmentary frontor back ele
vational view of a diiferent embodiment of hous 35
ing with the coin passage disposed on a horizon
tal plane, the view of which is the same from the
front and back, and discloses a coin in its passage
therethrough ;- and,
Figure 20 is a fragmentary perspective view of
an insulating rod showing arcuate notches.
Like characters of reference designate like parts
pointed out in the claims hereto appended,~and
illustrated in the accompanying three-sheet draw
in all the figures.
ings, of which,
form, proportion, size, shape, weight and other
Figure 1 is a perspective view, partially in sec
tion, showing the housing of the device; .
Figure 2 is a perspective view of the base mem
ber adapted to receive the housing and the coin
‘Figure 3 is a perspective view of the coin recep
Figure 4 is an eievatlonal view of a housing hav
ing graduations in minutes and showing a coin
Figure 5 is an elevational view of a housing
It is understood that various changes in the
details of construction, within the scope of my
invention may be resorted to without departing
from the spirit or broad principle of my invention
and without sacri?cing any of the advantages
thereof; and it is also understood that the draw
ings are to be interpreted as being- illustrative
and not restrictive.
The inventive idea involved is capable of re
ceiving a variety of mechanical expressions one of
which, for the purpose of illustrating the inven
tion, is shown in the accompanying drawings
The reference numeral I indicates as a whole a
head or housing which is adapted to receive a
coin 2 through either one of a pair of coin slots 3.
The housing is provided with a pair of alined
vertical windows 4 of glass or other transparent
material. The head I at its lower end is pro
vided with- a hollow depending sleeve portion 5
10 which ?ts over a hollow post 6 and houses a
base member 1 which is adapted to lock in place
the head I upon post 6 by a suitable locking
means 8 (Fig. 7) which is preferably, weather
proofed by apivotally mounted lid 9. ‘The base
15 member 1 has a ?ange I0 around its upper por
the head I at a point indicated at 26. Inter
mediate the ends of the shaft its body is formed
of spiral threads 29 which are preferably formed
by twisting a rod which is square in cross-section.
The space between the two windows 4 is open to
the portion 29 'of'the shaft 21 so that a coin
between the windows may be engaged by the
shaft. The shaft 21 ‘is adapted to be rotated by
a toothed disc, or ratchet 55, fastened securely
to its lower end by a screw 56.
The means for 10
driving the disc 55 will be more fully described
. Opposite the location of the spiral shaft 21, the
head I is bored upwardly as shown at 3?-A to
receive a removable rod 30, made of non-con 15
tion and is provided with a stud I I for ?tting
complementally a suitably shaped recess I2 in
the head I to prevent the head and base from
at its lower end plurally, as indicated at 3| shown
turning separately circumferentially. The base
connection with an insulating washer 31 (Fig. 6),
20 is also provided with a threadedperforation I3
for receiving a similarly threaded screw I 4 (Fig.
1) the head of which is tapered to a size smaller
than the body, and is adapted to be screwed, out
wardly so that a portion of the head enters a
25 hole in post 6 but does not protrude from the
other side of the wall of the post. In this manner
‘the base 1 and post 6 are locked securely together.
ductive material; the rod is notched arcuately
in Figs. 8 and 20 so that a screw head 32, -in
may engage the shoulders of any of the desired 20
notches 3I to not only hold the rod against longi
tudinal movement but also to hold it against rota
The rod 30 has four grooves numbered 33, 34,
35, and 36 which are equally spaced radially and 25
which extend the full length of the rod, each _
groove communicating with one of the notches
An insulated electric wire enters said base at the . 3i. Each groove is lined with a metal strip, as
bottom and leaves the same at the top, connecting
30 with a terminal l5 in’ the top of said ?ange III
_ for contacting another terminal 85 (Fig. 6) there
over. A cylindrical coin receptacle l1 (Fig. 3)
is to be inserted in the top of the base member 1.
The receptacle has an upper ?ange I8 which has
35 a recess 58 in its edge for slidably ?tting over
the upstanding pin 59 on the upper portion of
the shoulder I0 of member 1 shown in Fig. 2, for
preventing independent rotation of the receptacle.
As may best be seen in Fig. 2 the upper end of
40 the base member shoulder or ?ange III is equipped
with upstanding pin 59, having an annular groove
60, near its upper end. The lock element 8 is
shown at 33—-A, 34-A, and 36—A, each strip
being of a different length. The metal strip in 30
.one of the grooves extends its entire length, and
in the others extends upwardly different distances
from the bottom of the rod. The lower ends of
all the strips are bent over the end of the rod, for
electrical contact with the wire 53. All are 35
perforated for receiving a screw. By loosening
the screw 32 the rod 30 may be rotated into posi
tions bringing various ones of the metal strips into communication with the coin passage 3.
These grooves are provided for the purpose of 40
permitting the coin 2- to gravitate downwardly
along the rod until the top of the metal strip is
‘equipped with a tongue 6| at its lower end. The 4 reached. When the top of one of the strips is
tongue and lock element are positively fastened reached by the coin, the coin is forced laterally
45 together by nut 62 screwed on the lower end of
into engagement with the spiral portion of the
the element. The tongue may be turned by a shaft 21. In other words; if the rod 30 is rotated 45
key, not shown, into and out of the groove 60, and positioned in such a manner as to bring the
thereby locking the head I in place upon the groove 34 next adjacent the coin passage between
base ‘I.
the windows, the coin will drop freely along the
The windows 4 in the head I are spaced apart groove as far as the upper end.of the metal strip ‘
su?iciently to barely permit the passage there
34—A,- at which point it will contact such metal
between of the coin 2 in the slot 3 downwardly.
The member 1 is provided with a bore I6 for re- ,
'ceiving the coin receptacle I1. The coin recep
55 tacle is provided, at its upper end with a slot
which has a ?ared upstanding lip I9 surround
ing it for receiving the coin after it passes down
wardly below the windows 4. The coin slot in the
receptacle is so designed that a coin may pass
60 downwardly into the receptacle but cannot be
removed from the receptacle through the slot.
The receptacle has an opening 20 for removing
coinstherefrom and this opening is adapted to be
covered by a suitable gummed seal 2|‘.
Surrounding the upper portion of the base 1,
the lower surface of the ?ange I0 is annularly
tapered as at 22 to form‘ a water-tight seal with
the upper end of the post 6, which is similarly
The lower end of the head I is closed by a bot
tom 23 which is bored to receive abearing 24
adapted to be held in place by screws 25, screwed
into the head._ The bearing acts as a journal for
the lower smooth portion 26 of the shaft 21, the
76 upper end of which is journaled in the body of
strip, and will be forced by gravitation down
wardly and laterally into contact with said spiral
29. Consider that the windows are made of a
length, and that the shaft 21 is driven at a proper ,
speed to convey the coin the entire length of the
windows in one hour; then if the coin drops one
fourth of that distance before it contacts the
' metal ‘strip and is engaged by the spirals on shaft
21, as shown at 34-A in groove 34, only three 60
quarters of the hour will be left in which the
coin would be visible through the window. There
fore the device would be set in this manner if
the device were to be placed in a forty-?ve minute
parking zone. If it were to be placed in athirty 65
minute zone the rod 30 would be rotated and po
sitioned in such a manner as to bring the groove ,
33 and metal stripp33-A next adjacent the coin
passage, thereby allowing the coin to drop half
the total distance before being. engaged by the
spirals. Similarly, if in a fifteen minute zone the
groove 36 and metal strip 36—A would be turned
toward the coin passage, allowing the coin to
drop three-fourths of the distance before being
engaged by the spirals. In places'where a full 75
hour parking limit is allowed groove 35 would be
turned toward the coin passage and therefore the
coin would be forced into engagement with the
spirals 29 on shaft 21 and in contact with the
metal strip 35 the instant it ‘struck the upper end
of the rod since its metal strip extends its entire
length. It would therefore be visible through the
window from both sides of the device for the full
period of one hour, and for the shorter periods in
10 the other instances. It will be apparent that the
two parallel oppositely disposed spaced transpar
ent plates, or windows, will permit visibility
through both such plates, but that during the
passage of the coin therebetween such visibility
15 will- be obstructed and divided by the coin and
the portion above the coin through which visibil
ity is permitted will indicate the elapsed portion
of the parking time, and the portion below the
coin through which visibility is permitted will in
20 dicate the unelapsed portion of the parking time.
In Fig. 10 is'illustrated a spiral shaft ii the
spiral portion 40 of which has considerably longer
travel than the spirals of the shaft 21 shown in
Fig. 6. The upper smooth portion of- the shaft is
numbered 39 and the lower smooth portion is
numbered 42. Otherwise the shaft 4! is identi—
cal with the shaft 21. The shaft 4i may be used
in lieu-of the shaft 21 or other shafts may be used
having any desired travel of spiral in order to
30 regulate the speed of travel of the coin 2 down
wardly through the slot 3 between the two win
dows 4.
To the bottom 23 of the head is attached a
for securely fastening thereon by a screw, one of
a series of toothed discs shown at Figs. 12, 13, 14,
and 15, the teeth 63 of Fig. 12 being adapted for
use in an hour parking zone; the teeth 44‘ of Fig.
13, being adapted for use in a forty-five minute
parking zone; the teeth 45 of Fig. 14, being
adapted for use in a thirty minute parking ‘zone,
and the teeth 46 of Fig. 15, being adapted for use
in a ?fteen minute parking zone, provided in each
instance that the impulses on the switch A are on 10
the basis of one impulse per minute. Each of
said discs is provided with a central perforation -
M, and have a tongue‘ portion 88 for fitting in
a notch 49 (Fig. 10) in the lower end of the
smooth portion 26 of the shaft. The application 15
and operation of said discs will be more fully
hereinafter described.
A battery or other electrical current power
supply shown in Fig. 9 has one of its terminals
grounded 51 and the other continues to switch A, 20
which is actuated by a clock mechanism at some
central location, from which a feeder line 8i con
tinues to the device or devices entering magnets 38
and 69. The lead-off line 83from magnets 68
and 69 connects with'metal stripson rod 30 by N in
means of a copper wire 53 held in contact by screw
head. By the aid of a coin the' circuit on the
metal strips in the rods is bridged to the spiral
conveyor, which is also grounded. The coin is
shown as switch 38, and completes the circuit 30
through magnets 68 and 6%, provided switch A
is closed.
means for controlling same, both of which will
now be described.
The electro-magnet or magnets 68 and 69, have
In assembling the device the base member ‘i
will be inserted within the post 6; the coin‘recep
tacle I‘! placed inside the base member, and the 35
screw it screwed out tight against the edge of
the hole (not shown) in post 6, thereby locking
preferably a housing 10 for enclosing them within
these two'members in place. The spiralconveyor
mechanical propelling element, and electrical
soft iron metal, such as “Armco” iron or the like,
40 for the greater ei?ciency of the electrical equip
ment. They are fastened to the wall of the hous
ing 10, and the housing is in turn fastened to the
bottom 23, by screws ‘II and 12. Said housing has
Z'l, bearing 24, ratchet wheel 55 and screw 56 are
inserted in the head as a unit, which unit is held 40
in place by screws 25, (Fig. 8). The rod 30 is then
inserted in the head and the magnets are con
nected electrically with the metal strips in rod
30 by means of wire 53, held in place by screw 32.
a laterally extending wall 13 with 'a spring en46 gagement ‘l4 fastened to its outer end, which The housing 10 containing the magnetsfspring 45
spring engages ratchet 55 and prevents backward 80, spring arms 14 and 19, and the pulsating arm
‘i6, is. fastened to the lower part of the head I by
movement of the ratchet. An arm 16 of like
soft iron material is pivotally engaged at 15 with means of screws ll and 72 (Fig. 8) through
the wall of the housing 10. Arm 16 has a tongue ?anges integral with the housing. The head and
50 11 which extends through a slot of like width in the mechanism are now one unit which is then 50
the opposite side of said housing 10, the slot so placed over and around the post 6, the base mem
spaced in the housing as to guide the movement of _ ber 1, and the coin receptacle H. The bottom 23
the tongue end of the arm 16, and to limit its of the head i is then securely fastened ‘to the base
movement toward the magnets, preventing actual member 1 and locked in place by the tongue 61,
(Fig. 8), which ?ts into the groove 60 (Fig. 2) ,1 .
55 contact with the magnets. The ‘outward travel
of the tongue end of arm 16 ‘is restricted by a when turned into proper position by a key in
set-screw ‘I8, projecting through the edge of the serted at 8 (Fig. 7). Electrical contact between
the magnets in the head and the wire in the base
housing. On said arm 16, intermediate its piv
otal end and the tongue 11, is provided a spring member is automatically ‘made by means of ter
arm 19 for engagingthe ratchet wheel 55 and minal 15 being contacted and slightly depressed 60
causing its partial rotation when magnets 68 and
69 release the pulsating arm ‘I6 for its return,
by the action of a'spring 80, from the position
shown in dotted lines to the position shown in
solid lines.
A portion‘of the wall of the housing 10 is
pressed out to form an anchor for one end of
the spring, 80. The other end of the spring is
anchored in a. similar manner to the arm 16 by a
70 pressed out portion of the arm near its pivotal
end. When the arm is in operating position in
the housing, 'the spring is slightly compressed.
The strength of the spring used isin direct rela
.by terminal 85 when the head is locked in posi
. In operation the coin is inserted by customer,
passes downward, contacts the top of the metal
strip in the groove on the rod 30, and then con
tacts the spiral conveyor, completing electrical
contact between rod and conveyor, closing the
switch as represented at 38 in Fig. 9, and render
ing the device operable by electrical impulses
'from the central control mechanism.
Electrical 70
impulses, the frequency of which is governed by
the central control mechanism, then pass through
the device to the magnets, drawing the tongue
tion'to the magnetism produced by the magnets. end of the arm toward the magnets, and at the
The lower end 26 of the shaft 21 is adapted same time further compressing the spring 80. 75
when the impulse has ended, the spring then
forces the tongue end of the arm 16 outward
until it contacts the set-screw 18. During its
passage outward, the outer end of the spring arm
19 contacts the ratchet, and partially rotates both
the ratchet 55 and spiral conveyor 21. This move
ment of the conveyor allows a slight movement
arcuate window 65; and in Fig. 19 is illustrated a
housing 66 having a horizontally disposed win
dow Bl. The enclosed mechanisms for propel
ling the coin across the windows of the last two
embodiments will of course be different from
that disclosed in Figs. 6, 7, and 8.
Obviously, the invention is susceptible of em
bodiment in forms other than that which is illus
trated in the accompanying drawings and de
scribed herein, and applicable for uses and pur 10
of the coin downward through the passage. Each
electrical impulse produces a like action in the
device and the coin eventuany passes downward
out of sight through the slot in the upper end of
poses other than as detailed, and I therefore ‘con
the coin receptacle, and into the receptacle. Pe
sider as my own all such
riodically a collector inserts key at 8, turns key
moving tongue 6| out of groove 60, removes the
adaptations and other uses of the form'of the
modi?cations and
device herein described as fairly fall within the
head and working mechanism as a unit, removes
coin receptacle, breaks seal, removes all coins,
scope of my invention.
replaces dated seal, replaces the receptacle and
the head and re-locks the device by turning key
claimed ‘and desired to be secured by Letters
Patent, is:
so that tongue 6| again contacts groove 60.
1. In a device of the class described, a coin
receiving passage, an electrically grounded con 20
20 may be well to state, however, that the distance
' Having thus described my invention, what is
between the adjacent faces of the spiral vshaft 21 veyor extending along and forming'one edge of
and the contacting surface of the metal strip on the passage, a rod disposed along and forming
the rod is barely sufficient to permit the passage of ' the opposite edge of said passage, said rod and
> a coin of certain size, and that a smaller coin will
25 drop through the head and into the coin recep
tacle without causing electrical contact-between
the spiral shaft and the rod.
When the coin passage is disposed vertically or
at an angle of sufficient pitch to cause the coin
30 to gravitate therein, only a slight portion of the
edge of the coin needbe engaged by the conveyor,
and the conveyor and metal contacting strips will
act as an agent to retard the downward move
said conveyor adapted to engage a coin in the
passage and permit its movement along the pas
sage as the conveyor rotates, means for rotating
- said conveyor, and a source of electrical energy,
the contact of said coin with the rod and con
veyor adapted to close a circuit to said source
of electrical energy to energize said power means.
2. In a device of the class described, a, coin
receiving passage having two oppositely disposed
visible transparent parallel side walls, an elec
ment of the coin. However, if the coin is to be
35 moved horizontally or arcuately by the conveyor,
trically grounded spiral conveyor extending along
a greater portion of its edge must be engaged by
the conveyor in order to prevent the coin from
rod forming the opposite edge of said passage,
said rod and said conveyor adapted to engage
binding in the passage.
At Fig. 11 is shown an alternate removable con
40 tact rod 50, made of non-conductive. material,
and forming one edge of the passage, a grooved -
a coin in the passage and to control its move
_ ment along the passage, said coin adapted to
visibly divide the passage during its travel there
and adapted to be used in said device in lieu of the
rod 30. This rod 50 is intended to be used when
it is desired to depend entirely on the regulation
in said passage at a desired speed, and a source
of the frequency of electrical impulses through the
of electrical energy, said coin adapted to close
45 magnets‘ to govern the passage of the coin
through the entire length of ‘the coin passage 3
within a desired length of time. Said removable
contact rod 50 has a groove 5| provided with a
metallic contacting strip 52 extending its full
50 length which contacts at its lower end an in
through, power means for rotating the conveyor
at a desired speed, and thereby lowering the coin
a circuit. to said source of electrical energy 45
through contact with the spiral conveyor and
rod, thus energizing said power means.
3. In a device of "the class described, a coin
receiving passage having two oppositely disposed
‘ visible transparent parallel side walls, an electri- .r.
sulated electric wire 53, the two being held to-\ cally grounded spiral conveyor extending along
gether by a screw 54.
the passage, an insulated rod having metallic
In Fig. 6 is illustrated the rod 30 for making it strips of different lengths disposed in longitudi
possible to utilize the coin as an indicator for nal slots therein and forming electrical contacts;
various periods of parking ‘time. InFlgs. 1 and 4 said conveyor and any selected one of said strips ,~ ;
graduations 63 have been shown to cover various
> periods of time ranging from five to sixty minutes.
In each of these ?gures as well as in Figs._17, 18,
and 19 the front and- back windows are opposite
and give easy and clear visibility, through said
windows, except where such visibility there
through is obstructed by the coin while passing
‘ therebetween.
It might be found desirable to
drive the spiral shaft at various speeds for various
parking zones, in which case the coin would be
engaged by the spiral shaft at the upper end of
- the window, and would travel the entire length of
the window, even though the parking time in that '
particular zone were only fifteen minutes, or less.
70. For such a condition the graduations shown in
Fig. 5 have been designed. In this embodiment
the graduations indicate a percentage of‘ the per
mitted time instead of representing periods of
In Fig. 18 is illustrated a housing 54 having an
adapted to engage a coin in ‘said passage and
regulate its downward travelin said passage, said
coin adapted to close a circuit between a selected
one of said strips‘and said conveyor, said‘ cir
cuit including a source of electrical energy, and
power means rendered'operable by the closing of
said circuit for rotating said conveyor at a de
sired speed, thereby lowering said coin in said
passage at a desired speed, the di?'erence in length
of said metallic strips adaptedto selectively regu
late the period during which said circuit is closed
by ‘said coin, as well as to selectively determine
the distance said coin must travel in said pas-r
sage under positive control of said conveyor.
4. A parking meter comprising a coin receiv 70
ing passage, an electrically grounded spiral con
veyor extending along the passage, a rod forming
an electrical contact member disposed along said‘
passage opposite said, conveyor, electrical con
tact between said rod and said conveyor adapted 75
to be ‘completed by a coin in the passage contact
ing each of them, said rod and said. conveyor
adapted to engage said coin and permit its move
ment along said passage, and electrical means
rendered operable by said electrical contact for
rotating the conveyor.
I 5. In a device of the class described, a hous
ing including a hollow head and a hollow base; a
vertically disposed coin receiving passage in the
headhaving a pair of spaced transparent paral
lel oppositely disposed walls; an electrically
grounded spiral conveyor journaled in the head
extending along and in communication with the
passage; a radially adjustable insulated rod par
allel to the conveyor, extending along and in
communication with the opposite side of the pas
sage, and having a plurality of radially spaced
longitudinally extending grooves therein; a like
plurality of metal strips secured respectively
along the bottoms of said grooves, each extending
upward along the grooves a different distance,
whereby a coin in said-passage may pass for a
distance along a selected groove without contact
ing the conveyor, and will be forced laterally into
contact with the conveyor when the coin reaches
the top of the metal strip in that groove; said
conveyor, said rod, and said metal strip coacting
to regulate the descent of said coin in the pas
sage; and means electrically operated for driv
30 ing said spiral conveyor at a desired speed, thus
allowing said coin to pass downward through said
passage at a desired speed.
6. In a device of the class described, a pairv
5 ,
sage opposite said conveyor, said rod having a
longitudinal groove extending from one end to
the other, a metal contact strip in said groove,
a tootheddisc for rotating said conveyor, said
conveyor and said rod adapted to contact and
control the movement of said coin through said
passage as the conveyor'rotates, a power unit,
operative'connections between said power unit
and said toothed disc for rotating said disc, and
a source of electrical energy, said coin adapted to‘
close a circuit including said source of electrical
energy, the conveyor, the rod, and the power unit,
thus energizing said power unit.
r 8. A meter comprising: an elongated head he -
ing a through slot in its central ‘portion; a pair‘ 15
of spaced parallel transparent plates disposed at
opposite sides oi‘. said slot; an electrically‘groundw
‘ed spiral conveyor journaled in the head and ex
tending along one edge of said plates; a grooved
rod‘ housed in the head andlextending along the 20
opposite edge of said plates, the slot being dis
posed to communicate withthe space between
said plates; the plates, conveyor, and rod together
forming a coin passage of a size to allow the pas
sage only of coins of certain maximum size; a pair 25
of coin slots in said head communicating with
said coin passage; a metal contact strip extend
ing from one end ofgsaid rod along the bottom
of its slot to a point short of its opposite end;
said conveyor and said metal strip‘ together
adapted to engage a coin passing downward in
said passage and to temporarily arrest its down
ward travel; said coin, in contacting said con
of spaced oppositely disposed parallel transpar
veyor and metal strip, adapted to close an electric
03 Cl ent plates having a coin receiving passage there
circuit including a source of electrical energy;
between, an electrically grounded spiral con-v a power unit housed in the head and disposed in
veyor extending along one edge of the passage, said circuit; operative connections between said
a coaoting rodextending along the opposite» edge, : power unit and said conveyor for step rotating the
both adapted to engage a coin therebetween and conveyor as impulses are received by the power
40 to control its movement along the passage, means unit; said conveyor and said metal strip, after 40
for rotating the conveyor at a predetermined the electric circuit has been closed, adapted to
speed, thus allowing the movement of said coin
through said passage at a desired speed, a source
of ‘electrical energy, an electrical circuit includ
ing said source of electrical energy, the conveyor,
the jrod, and said conveyor rotating means,.said
coin‘, by contact with the conveyor and rod,
adapted to close vthe circuit to said source of
electrical energy, thus energizing said rotating
regulate, the speed at which said coin passes
through said passage.
9. A device of the class described comprising:
a transparent coin receiving passage; an electri
cally grounded spiral conveyor adjacent one edge
of the passage; an electrical contact rod adja
means, and means carried by said rod for se
cent the opposite edge of said passage; said con
veyor and said rod adapted ,to act as a pair of '
electrical contacts to be closed by a‘ coin oi’ cer
lectively determining the distance said coin may
tain denomination deposited in the passage; a
travel in said passage before contacting said con-'
veyor and passing under-its control.
'7. In a device of the class described, a housing
power unit actuated by the closingv of said con
tacts; and means operated by said power unit to
step rotate said conveyor; said conveyor adapted
including a hollow head and a hollow base, a ver
to regulate the’ speed of travel of said coin through
tically disposed coin receiving passage in the head
said passage; the length of said rod ‘adapted to '
having spaced oppositely disposed transparent
govern the distance in said passage through‘
which the coin must travel under the regulation
parallel walls, an electrically grounded spiral con
veyor journaled in the head extending along the
passage, an insulated rod disposed in said pas
of said conveyor.
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