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Патент USA US3095607

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July 2, 1963
C. F. WALDR ON
3,095,597
WINDSHIELD WIPER
Filed March 9. 1960
5 Sheets-Sheet 1
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INVENTOR.
CL AUDE FI WALDEON
July 2, 1963
c. F. wALDRoN
3,095,597
wINnsHIELD WIPER
Filed March 9, 1960
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INVENTOR.
CLAU DE F. WALDEON
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ATTOPNEY
United States Patent Oil ice
3,095,597
Patented July 2, 1963
1
2
3,095,597
Claude F. Waldron, Columbus, Miss., assignor to Ameri
spaced relation with a non-conducting area therebetween.
0n the side of gear 15 adjacent plate 21 is provided a
WlNDSl-IIELD WIPER
can Bosch Arma Corporation, a corporation of New
conducting member 30, suitably insulated, with said mem
ber 30 having the spring contact linger 31 adapted to ride
York
on contact 25 and spring contact finger 32 adapted to ride
Filed Mar. 9, 1960, Ser. No. 13,930
10 Claims. (Cl. 15-250.17)
This invention relates to windshield wiping apparatus
on arcuate contact 26.
As will be seen from FIGS. 3 and 6, leads 23 and 24
connect arcuate contact ring 25 to battery B through
switch S, and lead 33 connects arcuate conducting mem
and has particular reference to a new and improved 10 ber
26 to battery B through switch S.
means for controlling the position of parking of the wip
The wiper motor is a series-shunt type motor and the
ing members thereof.
shunt coil is used to help maintain a more constant rpm.
The object of the invention is to provide a new and im
proved arrangement for controlling the parking of the
under varying wiper load conditions. The shunt coil C
also provides an extra magnetic ñeld to slow down the
wiping members of electrically actuated windshield wip 15 speed
of the motor when the control switch is placed in
ing mechanism when said wiping members are not in use.
the low speed position L and also the park position P.
Another object is to provide a parking control mecha
As will be seen from FIG. 6, when the wiper switch is in
nism for electric windshield wiping apparatus which al
the high speed position H, a circuit is completed from the
lows the parking of the wiping members only at the de
battery through the switch, the lead 23, and arcuate ring
sired location.
20 25 is energized. As spring contact finger 31 engages said
Another object is to provide relatively simple, e?icient
ring `25, the circuit is completed from the battery through
and economical means 4for controlling the parking of the
the switch and on through the series coil and armature of
wiping members of an electrically actuated windshield
the motor to ground, and there is some current flowing
wiping apparatus.
Other objects and advantages of the invention will be 25 across the resistor 22 and through the shunt coil C, which
helps to maintain a more constant rpm. under varying
apparent from the following description taken in connec
loads of the wiper.
u'on with the accompanying drawings, in which the pre
The lead 34 is connected to lead 23 at eyelet 37 and
fer-red form has been given by way of illustration only.
connects lead 23 with the motor series coil and lead 35 is
Referring to the drawings:
connected to eyelet 35a and connects lead 24 to the motor
FIG. 1 is a longitudinal sectional view of a windshield 30 shunt
lield.
wiping apparatus embodying the invention;
FIG. 2 is a sectional view taken on line 2-2 of FIG.
1, looking in the direction of the arrows;
In FIG. 8, the switch is in fast, F, or high, H, speed posi
tion and, as will be seen from the arrows in the drawing,
the current flows from the battery through the control
FIG. 3 is a view showing the parking control mecha
switch and lead 23 to the eyelet 37, from which it íiows
nism with the cover plate removed;
35 into lead 34 on into the series coil of the motor.
FIG. 4 is a view showing the parking control mecha
In FIG. 9, the switch is in the slow, S, or low, L, speed
nism of FIG. 3 from the opposite side;
position, in which case current Hows through lead 23 and
FIG. 5 is a fragmentary sectional view taken on line
lead 24 to eyelets 37 and 35a respectively, from which it
5_5 of FIG. 2, looking in the direction of the arrows;
ñows
through leads 34 and 35 to the motor series coil and
FIG. 6 is a schematic view of the wiring diagram of 40
motor shunt coil respectively, as will be seen from the
the wiping apparatus;
arrows in the drawing.
FIG. 'I is a diagrammatic view illustrating the wiring
In this low speed operation, the series and shunt coils
diagram of the wiper circuit; and
are
both energized and the extra strength of the magnetic
FIGS. 8 through 11 are schematic views illustrating the
field produced by the shunt -coil C slows down the speed
wiring circuit during the various phases of operation of
45 of the motor.
the wiper.
-It will be seen that when the wiper control switch S is in
Referring more particularly to the drawings wherein
the
park position P that, since it is desirable to have the
similar reference characters designate corresponding parts
wiper park at slow speed, a circuit is completed back
throughout, the apparatus shown embodying the inven
tion comprises a motor having the housing 10, stator or 50 through the switch and out to the shunt coil C and, there
fore, the motor operates at the low speed until the park
pole shoes 11, rotor 12 and the drive shaft 1'3 having the
ing is effected.
worm gear »14 thereon meshing with gear .15 on drive shaft
In this case the current actually bypasses the control
16, on which is positioned the link driving lug 17 having
switch and flows out the lead 33 into the outside control
crank pin 17a for connection to the actuating linkage of
ring 26, and current ilows in through contact ring 26 to
the wiping mechanism and adapted to oscillate the wiping
members upon rotation of gear 15 and shaft .16.
55 spring contact finger 32 to contact linger 311 to inner con
tact ring 25. At this point, current can iiow directly
The driving gear 15 is positioned in housing .18 having
through lead 34 to the motor series ñeld. Since it is de
the shoulder 19, and said housing 18 is adapted to be
sired to have the wiper park at slow speed, the current
enclosed by the cover plate 20.
On the shoulder 19 is positioned the switch plate 21, 60 also Hows out through lead 23 and crosess over to lead
24 and goes Iback through the eyelet on to the shunt field
which plate is of insulation or non-conducting material
of the motor. Thus, with both motor series and shunt
and carries on its outer side the field resistor 22 connected
fields energized, the motor operates at the slow or low
at its opposite ends to leads 23 and 24, hereinafter de
speed and continues to turn until the contact iii-iger 32
scribed.
On the opposite side of plate 21 from resistor 22 are 65 on the outside contact ring 26 moves into the insulated
space between the ends of ring 26 when the wiper coasts
provided the ring contact 25 and the arcuate or ring con
tact 26.
The contacts 25 and 26 are secured on the sur
to a stop.
It is pointed »out that current from the ybattery can ñow
through
lead 24 and contacts 32 and 31 at any time and
ings in said plate 21 and deflected to retain the contacts in
is of no consequence, except when the control switch is
position on the plate.
in parked position and contacts 32 and 31 are still on their
The ring contact 2S is a continuous circular contact, 70 respective
rings.
whereas arculate contact 26 has its ends 28 and 29 in
The relation of the wiper blade actuator arm to the
face of plate 21 by having lugs 27 extending through open
3,095,597
3
4
motor, a source of power, a wiper member operatively
connected to said motor and adapted to be actuated there
actuating shaft is such that when the contact 32 is in posi
tion to discontinue operation of the motor, that the actua
tor arm, as shown in FIG. ll, will be in proper angular
by and means for parking said wiper motor in predeter
parked position.
mined position, said means comprising a contact ring, a
first contact member adapted to contact said ring, an
arcuate contact member and a second contact member
adapted to contact said arcuate contact member, said
first and second contact members being electrically con
From the foregoing it will be seen that I have provided
new and improved means for obtaining all of the objects
and advantages of the invention.
I claim:
nected, and means for energizing said arcuate contact ring
through said arcuate contact member, said arcuate cori
tact ring and arcuate Contact member being mounted on
a non-conducting plate, said motor having series field and
shunt field windings, and switch means for controlling the
energization of said motor, said switch means having high
relation to park the wiper blade in desired position out
of the line of vision through the windshield. This is
illustrated in FIG. l1 where the apparatus is shown in
The adjusting tab T is provided for allowing adjustment
of the parking angle of the wiper member.
l. In a device of the character described, an electric
motor, a source of power, a wiper memb-er operatively
speed, low speed and park settings, said switch means
being connected to said motor whereby when said switch
means is on its park setting that said shunt and field wind
ings will be energized and said contact finger will move
until it reaches the end of said arcuate contact.
connected to said motor and adapted to be actuated there
by and means for parking said wiper motor in predeter
mined position, said means comprising a contact ring, a
first contact member adapted to contact said ring, an arcu
5. In a device of the character described, an electric
motor, a source of power, a wiper member operatively
connected to said motor and adapted to be actuated there
ate contact member and a second contact member adapted -
to contact said arcuate contact member, said first and
second contact members being electrically connected, and
means for energizing said contact ring through energìza
tion of said arcuate contact member, said motor having
series field and shunt field windings, and switch means
for controlling the energization of said motor, said switch
means having high speed, low speed and park settings,
said switch means being connected to said motor whereby
when said switch means is »on its park setting that said
shunt and field windings will be energized and said con
by and means for parking said wiper motor in predeter
mined position, said means comprising a contact ring, a
first contact member adapted to contact said ring, an
arcuate contact member and a second contact member
adapted to contact said arcuate contact member, said
first and second contact members being electrically con
nected, and means for energizing said arcuate contact ring
through said arcuate contact member, said contact ring
30
and arcuate contact member being mounted on a non
conducting plate and having tab portions extending
through openings in said plate and deliected to maintain
said ring and member in operative position on said plate,
tact finger will move until it reaches the end of said arcu
ate contact.
2. In a device of the character described, an electric
motor, a source of power, a wiper member operatively
said motor having series field and shunt field windings, and
switch means for controlling the energization of said mo
connected to said motor and adapted to be actuated there
by and means `for parking said wiper motor in predeter
mined position, said means comprising a contact ring, a
first contact member adapted to contact said ring, an
arcuate contact member and a second contact member
adapted to contact said arcuate contact member, said
first and second contact members being electrically con
nected, and means for energizing said contact ring through
tor, said switch means having high speed, low speed and
`park settings, said switch means being connected to said
`motor whereby when said switch means is on its park
40 setting that said shunt and field windings will be ener
gized and said contact finger will move until it reaches
the end of said arcuate contact.
6. In a device of the character described, an electric
said arcuate contact member, said arcuate contact mem
motor, a source of power, a wiper member operatively
ber having a non-conducting portion between its adjacent
ends, said motor having series field and shunt field wind
ings, and switch means for controlling the energization of
said motor, said switch means having high speed, low
speed and park settings, said switch means being con
connected to said motor and adapted to be actuated there
nected to said motor whereby when said switch means
by and means for parking said wiper motor in predeter
mined position, said means comprising a contact ring, a
first contact member adapted to contact said ring, an arcu
ate contact member and a second contact member adapted
to contact said arcuate contact member, said first and sec
is on its park setting that said shunt and field windings
will be energized and said contact finger will move until
it reaches the end of said arcuate contact.
ond contact members being electrically connected, and
means for energizing said contact ring through said arcu
ate contact member, said contact ring and said arcuate
3. In a device of the character described, an electric
contact member being in concentric relation, said motor
motor, a source of power, a wiper member operatively
having series field and shunt field windings, and switch
connected to said motor and adapted to be actuated there
means for controlling the energization of said motor, said
by and means for parking said wiper motor in predeter
switch means having high speed, low speed and park
mined position, said means comprising a plate having a
settings, said switch means being connected to said motor
contact ring, a first contact member adapted to contact
whereby when said switch means is on its park setting
said ring, an arcuate contact member and a second oon 60 that said shunt and field windings will be energized and
tact member adapted to contact said arcuate contact mem
said contact finger will move until it reaches the end of
ber, said first and second contact members being electri
said arcuate contact.
cally connected, and means for energizing said contact
7. ln a device of the character described, an electric
ring through said arcuate contact member, said arcuate
motor, a source of power, a wiper member operatively
contact member having a non-conducting portion between
connected to said motor and adapted to be actuated there
the ends `of said arcuate contact member and means for
by and means for parking said wiper motor in predeter
pivoting said plate to thereby change the parking angle
mined position, said means comprising a contact ring, a
of said wiper member, said motor having series field and
first contact member adapted to contact said ring, an arcu
shunt field windings, and switch means for controlling
ate contact member and a second contact member adapted
the energization of said motor, said switch means having
to contact said arcuate contact member, said first and
high speed, low speed and park settings, said switch means
being connected to said motor whereby when said switch
means is on its park setting that said shunt and field wind
ings will be energized and said contact finger will move
until it reaches the end of said arcuate contact.
In a device of the character described, an electric
second contact members being electrically connected, and
means for energizing said contact ring through said first
and second contact members, said arcuate contact mem
ber having a non-conducting portion, said contact ring
and said arcuate Contact member being in concentric
5
3,095,597
relation, said motor having series iield and shunt ñeld
windings, and switch means for controlling the energiza
tion of said motor, said switch means having high speed,
low speed and park settings, said switch means being con~
nected to said motor whereby when said switch means is
on its park setting that said shunt and tield windings wiil
be energized and said contact linger will move until it
reaches the end of said arcuate contact.
8. In a device of the character described, an electric
motor, a source of power, a wiper member operatively
connected to said motor and adapted to be actuated there
by and means for parking said wiper motor in predeter
6
said contact ring and said arcuate contact member being
in concentric relation, said motor having series field and
shunt field windings, and switch means for controlling
the energization of said motor, said switch means having
high speed, low speed and park settings, said switch means
Ebeing connected to said motor whereby when said switch
means is on its park setting that said shunt and lield wind
ings will be energized and said contact finger will move
until it reaches the end of said arcuate contact.
10
10. In a device of the character described, an electric
mined position, said means comprising a contact ring, a
tirst contact member adapted to contact said ring, an arcu
ate contact member and a second contact member adapted
to contact said arcuate contact member, said first and
second contact members being electrically connected, and
means for selectively energizing said arcuate contact ring
through said arcuate contact member and said tirst and
second contact members, said arcuate contact member 20
having a non-conducting portion between the ends of
said arcuate contact member, said contact ring and said
arcuate contact `member being in concentric relation, said
motor having series field and shunt field -windings, and
switch means `for controlling the energization of said mo
tor, said switch means having high speed, low speed and
park settings, said switch means being connected to said
motor whereby when said switch means is on its park
motor, a source of power, a wiper member operatively
connected to said motor and adapted to be actuated there-
`by and means for parking said wiper motor in predeter~
mined position, said means comprising a contact ring,
a first contact member adapted to contact said ring, an
`arcuate contact member and a second contact member
adapted to contact said arcuate contact member, said
first and second contact members being electrically con
nected, and means for energizing said arcuate contact ring
through said arcuate contact member, said arcuate con
tact ring and arcuate contact member being mounted on
a non-conducting plate and having tab portions extend
ing through openings in said plate and deflected to main
tain said ring and member in operative position on said
plate, said contact ring and said arcuate contact member
being in concentric relation, said motor having series field
and shunt field windings, and switch means for controlling
the energization of said motor, said switch means having
high speed, low speed and park settings, said switch means
and said contact finger will move until it reaches the end 30 being connected to said motor whereby when said switch
of said arcuate contact.
setting that said shunt and field windings will be energized
9. In a device of the character described, an electric
motor, a source of power, a wiper member operatively
connected to said motor and adapted to be actuated there
by and lmeans for parking said wiper motor in predeter 35
means is on its park setting that said shunt and field wind
ings will be energized and said contact ñnger will move
until it reaches the end of said arcuate contact.
References Cited in the tile of this patent
UNITED STATES PATENTS
mined position, said means comprising a contact ring, a
ñrst contact member adapted to contact said ring, an arcu
ate contact member and a second contact member adapted
to contact said arcuate contact member, said iirst and
873,737
2,205,482
Eastwood ____________ -_ Dec. 17, `1907
Krieder ______________ __ June 25, 1940
second contact members being electrically connected, and 40
2,855,784
Dyer ________________ __. Oct. 14, 1958
210,317
828,994
Australia ____________ -_ Sept. 19, 1957
France ............... -_ Mar. 7, 1938
means .for energizing said arcuate contact ring through
said arcuate contact member and said first and second
contact members, said arcuate contact ring and arcuate
contact member being mounted on a non-conducting plate,
FOREIGN PATENTS
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