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Патент USA US2128878

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Aug. 30, 1938.
Filed Marfch 22, 1955
Fig). 1 .
24 49 12'
‘- Patented Aug-3o,
wmpsmnnn CLEANER coNraoL MECH
Erwin O. Horton, Hamburg, N. Y., assignor to
Trico Products Corporation, Bu?alo, N. Y.
Application March 22, 1935, Serial No. 12,522_
This invention relates to an automatic wind;
shield cleaner and primarily to an improved con
trol for the motor of the same.
The present day motor vehicle is equipped with
(.01; 121-142)
passage I2 being connected to the source of suc
tion, such as the intake manifold of the motor
vehicle engine, by suitable tubing. The chamber
Ibis provided with a movable wall M which is
5 a windshield cleaner which is mounted within the subjected at its inner' side to the low pressure in
fabricated structure of the body so that anyreg
?uence in thechamber and at its outer side to
ulation in the speed of operation of the cleaner , the outside atmospheric pressure, such communi
necessitates the removal of a body panel and
requires the services of a mechanic.
The object of the present invention is to pro
vide a windshield cleaner which is more satis
‘ facto'ry in operation. It comprehends bringing
cation with the'outside atmosphere being estab
lished through ports I 5 in a cover plate l6.- The
movable wall is thus acted upon by a pressure dif-' 10
ferential and, when the pressure in the chamber
-II is of a predetermined low value, responds
the regulation of the cleaner speed under the con . thereto by moving toward the valve seat ‘l3 to
trol of the motorist, so that he may adjust the throttle and restrict the )passageltherethrough.
15 speed of operation of the wiper back and forth
This results in the modi?cation ‘of the degree of 15’
across his line of vision to suit his particular de
low pressure available at the control valve 3 for
sire; and further, the invention comprehends the - the operation of the windshield cleaner motor.
embodiment'of such regulator in a common con
To insure a more accurate valve action by the
trol unit with the means for rendering operative _ movable wall, a valve plate I‘! is interposed be
20 and inoperative the cleaner.‘
tween the sameand the valve seat, such plate
In the drawing depicting. one embodiment of being adapted for movement with the movable
the invention, Fig. 1 is a fragmentary showing in wall toward the seat. The composite valve thus
' plan of a windshield cleaner embodying the pres
formed is urged away from the seat by a spring
l8 which is conveniently disposed in the outlet
ent invention; a
Fig“. 2 is a front elevation thereof, and
‘passage l2 and bears at its outer end on the 26
Fig. 3-is a detailed sectional view of the regu
‘valve plate l'l, while its opposite end is seated
lator or governor.
Referring more particularly to the drawing
wherein is illustrated'by preference a ?uid oper
30 ated windshield cleaner of a well-known con
struction, the numeral l designatesthe cleaner
motor embodying a piston (not shown) movable
back and forth in a chamber by a ?uid pressure
' differential which is alternately reversed through
upon a regulating screw l9.
This screw is
threaded into the housing III of the regulator for
adjustment and therefore, by turning the screw
l9 clockwise orv counter-clockwise, the tension of 30
the spring I 8 will be correspondingly increased
or decreased. The spring therefore will urge
more orless upon the valve plate IT to! resist
Con- »
36 ‘ valve mechanism contained in a housing 2, the - sequently the'pressure differential required to 35
mechanism being opened to a source of low pres
throttle the suction passage through the regu
sure through a shut-off valve generally indicated
at 3. Such’ a windshield cleaner motor con
struction is shown in Patent No. 1,840,233, grant
40 ed January 5th, 1932 to. Henry Hueber. Accord-_
ing to the present disclosure the stem 4 of the
shut-01f valve 3 is connected to one arm of a bell
movement of the latter toward the seat I 3.
lator may be varied and determined to regulate
the speed of the windshield cleaner for faster
wiping or slower, as the motorist may desire.
The adjustment of the regulator, as well as 40
the on-and-oif movement of the shut-off valve,
is. brought under a single control and vrendered
crank lever 5 by a pin and slot connection ‘SJ accessible to the motorist so that by a simple
The bell crank lever, being pivoted at 'l on the manipulation, the windshield cleaner may be
45 motor casing, has its opposite arm 8 extended to
started, stopped or regulated to the desired speed
be rocked by the control hereinafter referred-to. of operation vas the motorist may dictate. Ac
Fluid communication between the shut-oi! cording to the present disclosure this control is
valve and the source of suction or. low pressure illustrated as being of ‘the remote type, and
is established by passage 9 which leads through
embodies a push-‘pull wire 20 housed within a '
a speed-regulator or governor member generally
?exible armor 2| and provided at its outer end
indicated at M. This regulator may be of any _ with ya knob or button “by which the wire may
suitable construction and is herein illustrated as have longitudinal movement imparted thereto, as
, comprising a casing having a chamber ll into
‘ which passage 8. opens and from which leads'a
as second passage I! through a valve seat It, the
well as rotational movement.
Rotary movement of the wire is utilized to turn
the regulating screw II and thereby adjust the 55
~ 2
urge of the spring l8. 'To this end, the control
obvious that the regulation of the cleaner opera
tion will be more satisfactory to the particular
wire is provided with a tubular end coupling or
sleeve 23 which receives the outer end of the
regulating screw l9 and is keyed thereto by a
radial pin 24 on the screw ?tting into a longi
motorist and that the changes in the operation
readily may be accomplished.
tudinal slot 25 in the sleeve. This arrangement
connects the regulating screw to the wire for
imparted rotational movement but permits axial
or longitudinal movement of the wire independ
10 ently of such screw for rocking the bell crank
lever 5, ‘I.
For this purpose the coupling mem
actuating part and the companion means having
a rotatable actuating part, a. control common to 10
‘ both means whereby the cleaner may be regulated
ber 23 is provided with an annular groove 26 to
receive the outer end of the arm 8, which may be
forked if desired, so that .endwise movement to
15 the wire 20 will rock the bell crank lever and
in its speed of operation as well as started and
stopped therefrom, said common control embody
ing a rotatable member mounted for bodily
movement, means connecting the member to the 15
accordingly move the shut o?f valve 3 to a
closed or open position. The outer end of the
?exible armor 2| may be given substantial sup
port from the motor casing by a bracket 21 or
20 it may be otherwise supported in an accessible
second actuating part for imparting rotational
movement thereto, said connecting means per
mitting limited bodily movement of said member
independently of the second actuating part and
connected to the ?rst actuating part for moving 20
the latter during such bodily movement whereby
the operation of the motor may be concurrently
regulated and controlled,‘ and means supporting
the control from the motor for mounting and
position. The inner end of the ?exible armor is
secured to the motor casing by an anchor clip
28. ‘ This assemblage adapts the entire cleaner as
a unit for convenience in mounting and installa
25 tion in the motor vehicle body.
demounting as a unit therewith.
In operation, the normal or imposition of the
2. A windshield cleaner unit having a wiper
operating motor with a power shut-01f member
and a speed regulating member, both of said
members being mounted on said motor and one
of said members being rotatable and the other 30
reciprocable, a ?exible push-pull control mounted
also for rotatable movement, a pin and slot con
nection between said control and the rotatable
member connecting the two elements for rota
knob 22 preferably will be‘the shut-off position
for the windshield cleaner. Therefore to start
the cleaner in operation, it is simply necessary
30 to pull out on the control knob and thereby rock
the bell crank lever clockwise, in Fig. 1, to open
the shut-off valve 3. The cleaner operation may
be adjusted faster or slower by'simply turning
the knob 22 clockwise or counter-clockwise until
35 the desired speed is obtained without disturbing
the shut-o? valve.
What is claimed is:
1. A windshield cleaner unit having a motor
with power shut-off means and speed regulating
means, one of the means having a reciprocable
tional movement and permitting relative lineal
The pin and slot connection
movement, and an armor for the ?exible control
permits lineal movement of the push-pull control
for guiding the latter in its rotary and longitudi
‘nal movements, said armor being rigidly sup
for actuating the shut-off valve and also lineal
movement of the adjusting screw during rota ' ported at both ends from the motor, whereby the
unit may be mounted and demounted as an 40
40 tion of the latter. Thus placing the two regu
lating instrumentalities under a single control entirety.
which is readily accessible to the motorist, it is
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