U.S. patent number 3,759,275 [Application Number 05/223,126] was granted by the patent office on 1973-09-18 for car wash installation.
Invention is credited to John C. Walters.
United States Patent |
3,759,275 |
Walters |
September 18, 1973 |
CAR WASH INSTALLATION
Abstract
A car wash installation comprising a housing having a suspended
guide track for mounting an inverted U-shaped frame carrying a
spray conduit reciprocable relative to a stationary vehicle. Four
corner posts extend upwardly above the deck of the housing and are
provided with horizontally extending spray wands normally extending
parallel to the longitudinal axis of the vehicle in an inoperative
position and pivotable approximately 90.degree. to a position of
use in front of and behind the vehicle for vertically traversing
the front and rear ends of the vehicle. Two of the laterally spaced
posts are carried by a carriage mounted beneath the deck of the
housing. The carriage is movable lengthwise of the vehicle for
positioning such posts in close proximity to one end of the vehicle
for accommodating vehicles of various lengths.
Inventors: |
Walters; John C. (Ashville,
NY) |
Family
ID: |
22835152 |
Appl.
No.: |
05/223,126 |
Filed: |
February 3, 1972 |
Current U.S.
Class: |
134/45;
134/180 |
Current CPC
Class: |
B60S
3/04 (20130101) |
Current International
Class: |
B60S
3/04 (20060101); B60s 003/04 () |
Field of
Search: |
;134/45,123,172,180 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Bleutge; Robert L.
Claims
I claim:
1. In a car wash installation having a deck on which a vehicle to
be washed is positioned comprising: a pair of laterally spaced
posts fixedly mounted at one end of said deck and projecting
upwardly above said deck in proximity to one end of a vehicle, a
reciprocating carriage disposed below said deck, a second pair of
laterally spaced posts mounted on said carriage and projecting
upwardly above said deck, means moving said carriage toward and
away from the first pair of posts for positioning said second pair
of posts adjacent to the other end of the vehicle, said posts being
provided with movable spray members, means moving said spray
members into an extended operative position of use in front of and
behind said vehicle in close proximity thereto and into a retracted
inoperative position of nonuse out of the path of said vehicle.
2. A car wash installation according to claim 1 wherein each of
said posts comprises tubular means mounted below said deck and
projecting upwardly therefrom, an actuating cylinder in the lower
portion of said tubular means and having a piston rod extending
upwardly, a spray member carried by said piston rod and extending
radially outwardly from said tubular means.
3. A car wash installation according to claim 2 wherein said inner
tube is provided with an elongated slot having a curved lower
portion for swinging said spray member upon initial upward movement
of said piston rod thence guiding the same vertically upwardly.
4. A car wash installation according to claim 2 wherein said spray
member comprises an elongated conduit having a plurality of spray
openings spaced therealong.
5. A car wash installation according to claim 1 wherein said spray
members comprise elongated conduits having a plurality of spray
openings spaced therealong.
6. A car wash installation according to claim 1 including means for
sensing the length of a vehicle, means responsive to said sensing
means for operating said carriage moving means to position said
second pair of posts in close proximity to said other end of said
vehicle to adjust the same for vehicles of various lengths.
7. A car wash installation according to claim 6 wherein said
sensing means comprises photoelectric means.
8. A car wash installation according to claim 7 wherein said
photoelectric means includes a light source for emitting a light
beam in the path of the vehicle to be washed and a photocell for
sensing said light beam, whereby establishment of said light beam
on said photocell initiates actuation of said carriage moving means
and an interruption in said light beam terminates operation of said
carriage moving means.
9. A car wash installation according to claim 1 in combination with
a track rail supported above said deck, said track rail being of a
length greater than the length of the vehicle to be washed, and a
frame having spray means suspended from said track rail for
reciprocating movement lengthwise of said vehicle, and means for
reciprocating said frame.
10. A car wash installation according to claim 9 wherein said spray
means is of inverted U-shaped configuration including an upper
bight portion and a pair of downwardly extending legs adapted to
receive a vehicle therebetween.
11. A car wash installation according to claim 9 including means
connecting said spray means to a source of cleaning liquid, a
pulley, said connecting means including a flexible hose having a
portion looped about said pulley, trolley means suspended from said
track rail for reciprocating movement relative thereto, said
trolley means supporting said pulley for paying out and taking up
said flexible hose upon reciprocating movement of said conduit.
12. A car wash installation according to claim 11 including means
for resiliently urging said looped portion of said flexible hose
against said pulley.
Description
BACKGROUND OF THE INVENTION
This invention relates generally to apparatus for cleaning motor
vehicles and, more particularly, to an automatic car wash
installation of the type which may be coin operated.
Various types of automatic car washers have been designed in recent
years and have found increasing acceptance due to their convenience
and economy. In the most conventional technique, the car washing
apparatus is generally stationary, having a series of stations past
which the vehicles are advanced by means of a conveyor arrangement.
While this type of car washer represents an advance in the art, it
is not completely satisfactory because of the space and labor
requirements.
Other types of car washing apparatus employ rotary brushes which
advance and retract toward and away from a stationary vehicle body
for cleaning the same. In these types of car washers, the brushes
tend to collect grit and other hard particles causing the vehicle
surface to be scratched and scarred by contact of the rotary
brushes with the vehicle body.
Still other types of car washing apparatus employ various mobile
frames or carriages which move relative to a stationary vehicle and
which carry spray discharge units for directing a spray of water
and detergent against the vehicle surface. While these car washing
installations conserve space and labor and perform satisfactority
in general, they also have shortcomings. Such mobile carriages have
a fixed path of orbital travel about the vehicle body and are not
adjustable to efficiently accommodate vehicles of different sizes.
Such car wash installations become less efficient in washing the
smaller sized vehicles, such as the increasingly popular compacts,
owing to the rapid pressure drop of the liquid jets away from the
spray discharge nozzles.
SUMMARY OF THE INVENTION
The car washing installation of the present invention, as
hereinafter described, provides a new and improved car washing
apparatus having novel means for effectively cleaning the front and
rear ends of the vehicle, such means being adjustable to
accommodate various sizes of vehicles.
Generally speaking, the car wash installation of the present
invention comprises a housing having a guide track for mounting an
inverted U-shaped frame thereon for reciprocating movement relative
thereto. The U-shaped frame is provided with a conduit having spray
nozzles for directing a liquid spray against the top and sides of a
vehicle to be cleaned. Four corner posts are located in the housing
and are provided with horizontally extending spray wands pivotable
from an inoperative position of rest to an operative position of
use in front of and behind the vehicle. These wands are raised and
lowered to traverse the front and rear ends of the vehicle and
direct a cleaning liquid spray directly thereagainst. Two of the
laterally spaced posts are mounted on a carriage beneath the deck
of the housing for automatically adjusting the position of such
posts relative to the rear end of the vehicle in a longitudinal
direction for accommodating vehicles of varying sizes.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective somewhat schematic view of one form of a
car washing installation constructed in accordance with the present
invention, showing a vehicle indicated in phantom;
FIG. 2 is a top plan view of a spray unit incorporated in the car
washing installation of FIG. 1;
FIG. 3 is a fragmentary vertical sectional view taken on the line
3--3 of FIG. 2;
FIG. 4 is a longitudinal sectional view of an upright post
constructed in accordance with this invention and including an
actuator for swinging and raising a spray wand during the washing
operation;
FIG. 5 is a fragmentary, side elevational view of a portion of the
post of FIG. 4;
FIG. 6 is a cross-sectional view taken on the line 6--6 of FIG. 4
showing the swinging path of movement of the spray wand;
FIG. 7 is a fragmentary top plan view, on an enlarged scale,
showing the carriage for certain of the posts illustrated in FIG.
4;
FIG. 8 is a vertical sectional view taken on the line 8--8 of FIG.
7, showing the spray wands swung into a position of use;
FIG. 9 is a horizontal sectional view showing the major part of the
car wash installation in plan view;
FIG. 10 is a diagrammatic view illustrating a photoelectric control
circuit, used in conjunction with this invention; and
FIG. 11 is a diagrammatic view illustrating a drive arrangement for
the carriage used in conjunction with this invention.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Referring now in detail to the drawings, there is shown in FIG. 1 a
preferred form of car wash installation, generally designated 10,
constructed in accordance with this invention and disposed in an
enclosure or housing 11 having a pair of side walls 12, a roof 13,
a deck 14 and open at each end whereby a vehicle A to be washed can
be driven therethrough. The entrance and exit ends are identified
by reference numerals 16 and 17, respectively, and may be provided
with doors or closures (not shown) of the overhead type which are
raised and guided in tracks as is well known in the art.
Two parallel, laterally spaced track rails 18 are supported by
suitable support structure (not shown) from the ceiling of housing
11 above the vehicle A which is adapted to be driven therebeneath.
A plurality of cross bars 19 are rigidly secured at their opposite
ends to the track rails 18 and span the space therebetween for
rigidifying the latter. A support plate 20 is mounted on two
adjacent cross bars 19 and is secured at its opposite ends to rails
18 for supporting a drive mechanism as will presently become
apparent.
An inverted U-shaped frame, generally designated 22, is mounted for
longitudinal movement relative to the track rails 18 and comprises
an upper horizontal bight portion 23 and a pair of laterally spaced
legs 24 depending from the opposite ends of bight portion 23. The
frame 22 is carried by the track rails 18 and includes a pair of
spaced upstanding rods 25 extending vertically from the bight
portion 23 and having rollers 26 at the distal ends thereof
supported in the rails 18 for reciprocating rectilinear movement
therealong. An inverted U-shaped conduit 28 is supported from the
bight portion 23 of frame 22 by means of vertically extending
connections in the form of conduits 29. The legs of the U-shaped
conduit 28 may be clamped or attached to the legs 24 of frame 22 by
any suitable fastening means (not shown) for added support. The
conduit 28 is provided with a plurality of spray nozzles 30
oriented in such a manner as to direct a liquid spray inwardly and
downwardly toward the sides and top of the vehicle A.
Means are provided for moving the frame 22 back and forth along
track rails 18, such means including an electric drive motor 32
carried by the plate 20 and connected to a suitable power source
(not shown) for rotating a drive shaft 33 through a suitable gear
reduction mechanism 34 mounted on the plate 20. As best shown in
FIG. 3, a drive sprocket 35 is rigidly secured to drive shaft 33
for driving a drive chain 36, also trained about idler sprockets 37
carried by the plate 20, and sprockets 38 located at the opposite
ends of rails 18. The sprockets 38 are mounted on brackets 39
attached to and extending outwardly from the endmost cross bars 19.
The ends of the drive chain 36 are anchored to a bracket member 40
fixedly secured to the bight portion 23 of frame 22. Thus, motor 32
is effective to move frame 22 longitudinally back and forth along
the rails 18 by means of the sprocket and chain arrangement
described above.
In order to convey the cleaning or washing liquids to the conduit
23, a flexible hose 42 is provided and is mounted at one end to the
plate 20 and suitably connected to a supply line (not shown)
leading to a source of cleaning liquid, also not shown. The other
end of the hose 42 is mounted to the bight portion 23 of frame 22
and is connected by suitable coupling means (not shown) to the
short conduits 29 for introducing the cleaning liquid into conduit
28 which distributes the same through nozzles 30 as a spray against
the top and sides of the vehicle A.
Since the frame 22 moves toward and away from the stationary plate
20, it is necessary to provide some means for guiding and taking up
the slack in hose 42 to prevent entanglement thereof and
interference with other parts of the installation. To this end, a
tension mechanism is provided and comprises a trolley 43 mounted
for reciprocating movement on rails 18. Trolley 43 comprises a base
plate 44 disposed beneath the rails 18 and having upwardly
extending rods 45 adjacent the opposite ends thereof provided with
rollers 46 engaging the rails 18 for rolling movement therealong. A
vertically extending shaft 47 is suitably journalled in base plate
44 and carries a take-up pulley 48 about which flexible hose 42 is
guided. A sprocket 49 is journalled for rotation on the upper end
of trolley 43 and is engagable with the lower run of drive chain
36. Sprocket 49 also is engagable with a stationary chain 50
disposed below the lower run of drive chain 36 and suitably
connected at its opposite ends to bracket members 51 depending from
cross bars 19. As the lower run of drive chain 36 travels in a
rectilinear path for moving the frame 22, the engaged sprocket 49
is caused to rotate. Since the chain 50 is fixed, rotation of
sprocket 49 effects movement of the trolley 43 in the same
direction as frame 22 but at one-half the speed of the latter so as
to maintain the flexible hose 42 taut at all times during
reciprocating movement of the frame 22.
In order to maintain the flexible hose 42 tightly wrapped about the
pulley 48, a pair of swinging arms 52 are pivotally mounted on
trolley 43, as shown in FIG. 2, and are provided with pulleys 53 at
their distal ends for guiding flexible hose 42. A compression
spring 54 is mounted between the arms 52 for urging the same toward
each other to insure tight engagement of hose 42 about take-up
pulley 48.
An important feature of the present invention is the provision of
means for thoroughly spraying the front and rear ends of the
vehicle A, such means comprising four standards or upright posts 55
disposed in the four corners of housing 11. The first pair of posts
55 located at the exit end 17 of housing 11 are fixed while the
other pair of posts 55 at the entrance end 16 are mounted on a
carriage, generally designated 56 (FIGS. 7 and 8) for longitudinal
movement within housing 11 to accommodate the varying lengths of
different sized vehicles.
As shown in FIG. 4, each post 55 comprises an outer housing or
cylindrical shell 57 having an upper flange 58 and a lower flange
59 which, in the case of a stationary post, may be secured to a
base plate 60 mounted on a pit floor 61 or other suitable
substructure below the deck 14. The lower end of an inner shell or
tube 63 is mounted within shell 57 and has an annular flange 64
intermediate its opposite ends suitably secured to the upper flange
58 of shell 57. The flanges 58 and 64 are secured together by means
of a shear pin 66 extending through aligned openings in such
flanges for a reason that will hereinafter become apparent. Tube 63
extends through the deck 14 and terminates in an upper end disposed
above the deck 14. The upper end of tube 63 is closed by a cap
member 65. A pair of spacer rings 67 are provided between tube 63
and shell 57 at the upper and lower ends of the latter to maintain
them in a properly spaced, concentric relationship.
Mounted within the tube 63 is a pneumatic actuator comprising a
cylinder 68 having a piston 69 mounted therein for relative
reciprocating movement. Conduits 70 and 71 are tapped into the head
and rod end of cylinder 68, respectively, for alternately supplying
or evacuating air pressure to and from the head and rod end of the
cylinder 68 to raise or lower piston 69. A piston rod 73 is
connected to piston 69 and extends axially outwardly through the
cylinder 68.
An extension 74 is mounted on the distal end of piston rod 73 by
means of a suitable connection 75. The extension 74 comprises a
length of pipe or conduit journalled for rotation in spaced
bearings 77. The extension 74 is closed at both ends and is
provided with a horizontal pipe 78 projecting radially therefrom. A
rotatable sleeve coupling 79 is carried by the pipe 78 for securing
a spray wand 80 thereto and for connecting the latter to one end of
a flexible hose 81 connected at its other end to a suitable source
of cleaning liquid. The spray wand 80 is formed of a length of
hollow tubing capped at the free end thereof and provided with a
series of longitudinally spaced spray nozzles 82.
An elongated slot 83 extends longitudinally of tube 63 for
accommodating and guiding the sleeve coupling 79 as the extension
74 is raised and lowered by piston rod 73. The slot 83 extends from
the upper end of tube 63 downwardly in a rectilinear direction for
a major portion of its extent and then curves laterally causing the
spray wand 80 to swing approximately 90.degree. as it approaches
the end of its downward travel. The free rotary movement of the
piston 69 in cylinder 68 allows this swinging movement of the spray
wand 80 relative to tube 63. The spray wands 80 are oriented toward
the entrance and exit ends, respectively, and downwardly adjacent
the deck 14 in their non-operative positions of rest, as shown in
phantom in FIG. 1. When elevated, the spray wands 80 first swing
ninety degrees into position in front of and behind vehicle A and
then move vertically to traverse the front and rear ends of such
vehicle.
As earlier mentioned, the posts 55 located at the entrance end 16
of housing 11 are mounted on the carriage 56 for reciprocating
movement relative to the rear end of the vehicle to be washed. As
shown in FIGS. 7 and 8, the carriage 56 comprises a generally
triangularly shaped frame 84 having a pair of structural members 85
extending from the opposite ends of a cross plate 86 in a
converging relation and connected to a cross plate 87. Extending
laterally outwardly from the cross plate 86 are a pair of shafts 88
having rollers 89 suitably journalled thereon and guided for
movement on a track 90 defined by the lateral flanges of a
structural beam 91 mounted on suitable substructure beneath the
deck 14. In a similar construction, the cross plate 87 also is
provided with at least one laterally extending shaft 88 having a
roller 89 journalled thereon and guided on a track 90.
The means for reciprocating the carriage 56 along tracks 90 is
shown diagrammatically in FIG. 11 and includes an elongated
cylinder 93 mounted at its opposite ends to beams 91 and including
a piston 94 having a cable 95 anchored to the opposite sides of the
piston 94. The cable 95 extends through the opposite ends of the
cylinder 93 and is trained about horizontally disposed pulleys 97
and 98. The cable 95 has an upper run and a lower run in
substantial vertical alignment and is anchored to the opposite ends
of the carriage 56. The cable 95 extends from the piston 94,
through the right end of cylinder 93 as viewed in FIG. 10, and is
then trained about a horizontally disposed pulley 97, around and
over a vertically oriented pulley 98, about horizontally disposed
pulleys 99 and 100, around a vertically oriented pulley 101, and a
horizontally disposed pulley 102 and then through the left end of a
cylinder 93 to piston 94. The pulleys 98 and 101 are disposed in
spaced vertical planes and the pulleys 97 and 102 are disposed in a
common horizontal plane spaced vertically above the common
horizontal plane in which pulleys 99 and 100 are disposed. The
pulleys 97 and 99 are in vertical alignment, as are pulleys 100 and
102. The upper run of the cable 95 is anchored to a bracket 104 as
shown at 105 in FIGS. 7 and 8, the bracket 104 being connected to
and extending upwardly from one end of the carriage 56. The lower
run of the cable 95 is anchored to a bracket 106 as shown at 107 in
FIGS. 7 and 8, the bracket 106 connected to and extending upwardly
from the other end of carriage 56. Thus, fluid pressure applied to
the left end of cylinder 93 moves piston 94 to the right effecting
a movement of the cable 95 in the direction of the arrows shown in
FIG. 10 to move the carriage 56 forwardly or toward the exit end 17
of the housing 11. Of course, movement of piston 94 in the opposite
direction effects reverse movement of the carriage 56.
Prior to use, the various components of the car wash installation
of this invention are initially disposed in the position shown in
FIG. 1. The entire operation, including the wash cycle, preferably
is programmed to operate in a timed relationship by means of an
electrical control system (not shown). Actuation of the cylinders
68 in posts 55 and the cylinder 93 for driving carriage 56 is
suitably controlled by fluid control valves integrally tied in to
the overall control system. Proper sequencing of the operation of
the several control valves for effecting the foregoing operations
and for energizing the various pumps and drive motors is by
conventional limit switches incorporated in the control system,
such switches being activated when predetermined movements of the
parts or vehicle occur. Each of the switches triggers the
subsequent stage of operation. The number of switches, their
positioning etc., is conventional and it is believed no further
amplification is necessary except for the operation of the
photoelectric sensing means, described below.
As shown in FIG. 8, a photoelectric control 110 is mounted on the
forward side of one of the posts 55 mounted on carriage 56 for
emitting a light beam from a suitable light source in the control
110 to a reflective target 111 mounted on the forward side of the
other post 55 on carriage 56. The light beam is reflected from
target 111 on the same axis emitted and received onto a suitable
photocell in the control 110. The light beam is directed downwardly
at an angle from the photoelectric control 110 to insure that the
most rearwardly projecting component on the vehicle A will
interrupt the light beam. As shown in FIG. 10, the photoelectric
control 110 is connected by conductor lead 112 to a suitable
electrical circuit, diagrammatically indicated at 113 which, in
turn, is connected through conductors 114 to a suitable electrical
power source (not shown). The circuitry diagrammatically identified
as 113 includes the usual amplifier for the output of the photocell
and other conventional components to transmit the output of such
cell through conductors 115 to a signal responsive means,
diagrammatically indicated at 116, which controls the operation of
cylinder 93 for moving or stopping the carriage 56.
The operation of the apparatus is as follows: The driver of the
vehicle to be washed inserts a predetermined amount of money into a
coin box located exteriorly of the housing 11 to close the main
switch (not shown) connecting the control system circuit to a
suitable source of power. The driver of the vehicle then slowly
enters housing 11 through the entrance end 16 and steers the left
front and rear wheels on a track 118. As the left front wheel
engages a treadle switch 119, the control circuit is conditioned in
preparation for the beginning of the wash cycle. The vehicle A is
further driven forwardly until the left front wheel depresses a
treadle switch 120 for completing a circuit to initiate the wash
operation. The track 118 may be provided with a gently sloping
surface leading to the switch 120 and terminating in an abutment
rearwardly of the switch 120 to advise the vehicle operator that
the vehicle A is correctly positioned.
Upon actuation of switch 120, a circuit is energized to actuate the
control valve for cylinder 93, directing air pressure to the left
side thereof for moving piston 94 to the right, causing carriage 56
and the posts 55 mounted thereon to move from the solid line
position shown in FIG. 1 forwardly toward the rear end of the
vehicle A. Simultaneously, the photoelectric control 110 is
energized for emitting a beam of light from such control. This
light beam strikes target 111 and is reflected back to the
photocell in control 110. However, when the light beam is
interrupted by the rear end of the vehicle A, the signal responsive
means 116 is triggered to stop movement of the carriage 56, thus
positioning the posts 55 in close proximity to the rear end of the
vehicle.
When the carriage posts 55 are properly positioned, the control
valves for the cylinders 68 are actuated to direct air pressure to
the lower ends thereof, raising pistons 69 and effecting swinging
movement of the wands 80 through ninety degrees toward the front
and rear ends of the vehicle A. Simultaneously, the washing cycle
is initiated whereby water is conveyed through hoses 42 and 81 to
the U-shaped conduit 28 and to the wands 80, respectively. The
motor 32 is energized to reciprocate the U-shaped frame 22 and its
associated conduit 28 back and forth lengthwise of the vehicle to
thoroughly spray the top and sides thereof. The frame 22 may
undergo any number of reciprocating passes to first spray water on
the vehicle, then spray a detergent and water mixture, then a spray
rinse of water, and finally a spray of wax, as desired, in a timed
relationship. Similarly, the wands 80 may be raised and lowered a
number of times to thoroughly spray the front and rear ends of the
vehicle A. However, during this wand traversing cycle, the wands 80
are not lowered to the extent that they reach the curvature in slot
83 so that they remain in their swung positions during the washing
cycle. After the washing cycle is completed, the wands 80 are
completely lowered and as they approach their lowermost positions,
are swung to the positions shown in phantom in FIG. 1. The vehicle
A can now be driven past the stationary posts 55 and through the
exit end 17.
If any of the wands 80 should become locked in their extended
operative positions due to a malfunction in the wand actuating
mechanism or should the vehicle operator negligently drive
forwardly before the termination of the wash cycle, contact of the
moving vehicle A with the wand 80 will generate a force transmitted
through the wand 80 to the tube 63, urging the latter to rotate
within the shell 57 and shear the pin 66. This enables the wand 80
to be swung out of the way by vehicle A without any serious damage
to the latter.
The present invention thus provides an improved car wash
installation having novel means for thoroughly cleaning the front
and rear ends of a vehicle. Such means are in the form of standards
or posts having horizontally extending spray wands pivotable into
an operative position of use in front of and behind the vehicle and
which are reciprocated vertically for traversing the front and rear
ends of the vehicle. One pair of laterally spaced posts are mounted
on a carriage movable lengthwise of the vehicle for positioning
such posts in close proximity to one end of the vehicle, thereby
effectively accommodating vehicles of varied lengths.
A preferred embodiment of this invention has been described and
illustrated in detail but it is to be understood that numerous
modifications may be made without departing from the broad spirit
and scope of this invention.
* * * * *