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Патент USA US2128068

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2,128,068
Patented Aug. 23, ‘1938
UNITED STATES PATENT OFFlCE
. 2,128,068 .
WINDSHIELD. WIPER ARM
John W. Anderson, Gary, Ind.,_ assignor to Pro
ductive Inventions, 1110., Gary, Ind., a corpora
tion of Indiana
Application November 15,1935,’ Serial No.‘ 49,995
7 Claims.
(01. 287-5292) _
This invention relates to a windshield wiper,
described in the copendin'g application of myself
by which the arm and wiping element are sup
ported and operatively connected to an actuating
Serial No. 579,874)',-the outer section l2 of the
and particularly to the arm- mounting therefor, » and Theodore J. Smulski, filed December 9, 1931,
arm 8 being provided with a hook-like portion i3‘
adapted to engage a connector H, on which is Ca
mounted a clip 'or holder l5 adapted to receive
a windshieldwiper element or blade l6 positioned
6 member such as a shaft or'other suitable device.
One object of‘ the present invention is to pro
vide means whereby a wiper arm may be readily
connected to and disconnected from its actuat
ing member.
'
adjacent and adapted for engagement with the
surface of the windshield ‘I.
.
is retained against accidental displacement and
possible loss of the arm and its associated parts.
,
lo
.
For operatively connecting the arm 8 to the 10
Another object of the invention is to provide '
a structure wherein the means for attaching or actuating member, the shaft 5 is provided with
securing the wiper arm to the actuating member a roughened tapered portion or shoulder I1 _
lo
Another object of the invention is to provide
a structure whereby'the wiper arm may be posi
tively retained in various positions of annular
adjustment with respect to the actuating mem
a pluralityv of elongated annularly spaced teeth
i8 adapted to be engaged by a key member. l9
adjacent an aperture 2| formed therein, the aper
ture 2i being of a diameter slightly smaller than
A ‘further object of the invention is to provide
- means whereby positive, operation of the wiperv
arm by the actuating member is assured.
A still further object of the invention is to
the outside diameter of the shaft portion 5.
For urging and securing the key member l9
against the teeth It of the tapered shoulder 61,
the shaft 5 is provided with a reduced portion 22
having screw-threads formed thereon adapted to
receive a screw-threaded clamping member 23,
improve devices of "the character described in
shown, preferably, in the present instance, as of '
ber or shaft.
20
shownhin 'the present instance, as provided with
'
»
,
25 sundry details hereinafter referred to and par
ticularly pointed out in the appended claims.
One embodiment of‘the present invention is
shown for illustrative purposes in the accompany
ing drawing, in which:
>
'
30 i Fig. 1 is a side elevational view of my improved
wiper arm mounting illustrating itsapplication- to
a wiper arm and actuating member operatively
related to a windshield; I
‘
Fig. 2 is an enlarged fragmentary sectional
35 elevational view of the improved mounting and
a portion of the arm shown in Fig. 1;
‘
Fig. 3 is a transverse sectional elevational view
taken substantially as indicated by the line 3-4
, of F18. 2;
40
'
_
'
Fig‘. ‘,1 is a further enlarged fragmentary-sew
tional elevational view of a portion of the struc-.
.ture shown in Fig. 2,'and illustrating the rela
tionship of certain portions of the device with
respect to each other.
In the drawing, the present invention is shown
45
as applied to an actuating member shown, in
the present instance, as a' shaft ‘5 rotatably
mounted in a frame 6 of a windshield 1, and to
substantially cylindrical form, and provided with
a screw driver slot 24 or the equivalent by which
the member 23 may be rotated on the reduced
portion 22.
As clearly shown in Fig. 3, the inner section 9
of the arm 8 is provided with spaced bifurcations
25 adapted to be positioned on opposite sides of
the clamping member 23 and secured thereto at
opposite sides thereof by a screw-threaded bolt
26 extending through the bifurcated portions 25
of the inner arm sections in a manner to draw 13 L1
the bifurcations 25 toward each other, and pro-v
viding a suitable driving connection between the
key member l9 and the arm 8, the key member
is provided with a laterally extending ?nger 21
having a portion 28 adjacent its lower end posi
tioned between the bifurcations 25 in a vmanner
to exert a driving force against one or the other
of the bifurcations as the ‘shaft 5 is rotated in one
direction or another.
'
By such'an arrangement, it will be apparent
that an efficient driving connection is provided
between the actuating member or shaft 5 and the
wiper arm 8 by reason of the key member is being
a wiper arm, indicated as a whole by the numeral forced against the roughened tapered shoulder
50 8, carried by the shaft 5, the" arm 8 being shown, - H by means of the clamping member 23 in a
in the present instance, as comprising an inner manner to cause the teeth W to bite into the
section Sconnc'cted rigidly to the shaft 5, an in
material of the key member surrounding the
termediate section II pivotally ‘mounted on the ' aperture 2| and by reasonof the portion 28 of the
'—
inner section 9, and an outer section l2 slidably
55 mounted on'the intermediate section ll (as fully
?nger 21 being positioned between the bifurca
tions '25 and the bifurcations being rigidly secured
2
2,128,068
to the clamping member/23 by means of the bolt
shoulder thereon and having a screw-threaded
26, the clamping member 23- and arm 8 are se
curely held against accidental displacement with
portion adjacent said shoulder, a key member
mounted on said shaft and engaging said shoul
respect to the key member I 9 and shaft 5, and
der, a screw-threaded clamping member mounted,
by reason of such an arrangement, it will be ap
on .the threaded portion of said shaft ‘and en
parent that a positive and most efficient driving
connection is provided .between the actuating
gaging the key member for securing the key
member‘ or shaft 5 and the wiper arm 8.
Obviously, the present invention is not limited
member against said shoulder, a, bifurcated wiper
arm mounted on said clamping member, means I
carried by said arm for securing the bifurcations
to the precise construction and arrangement ' thereof against the side of said clamping member, 10
shown and described as the same may be various
ly modi?ed. Moreover, all the features of the
invention need not be used conjointly as the same
may be used to advantage in variously different
combinations and subcombinations.
What I claim as new and desire to secure by
Letters Patent is:
'
and a ?nger formed integrally with said key mem
ber and positioned between the bifurcations of
said arm for providing a driving-connection be
tween said key member and arm.
5. In a device of the class described and in com
shoulder thereon and having a screw-‘threaded '
20 shoulder thereon, a key member engaging said
portion adjacent said shoulder, a plurality of,
elongated annularly spaced teeth on said shoul
der, a key member mounted on said shaft and
shoulder, clamping means mounted on said ac
tuating member and engaging said key member
for urging the key member against said shoulder,
threaded clamping member ,mounted on the
threaded portion of said shaft and engaging the
a wiper arm secured to said clamping means, and
key member for forcing the key member against _
means carried by said‘ key member and engaging
the teeth of said shoulder, a bifurcated wiper
arm rigi'dly secured to said clamping member,
and a ?nger carried by said key member and posi
tioned between the bifurcations of said arm for
providing a driving connection between said key
1. In a device of the class described and in
combination, an actuating _ member having a
[3 Cl
a portion of said arm for providing a driving con
nection between said key member and arm.
2. In a device of the class described and in
30
combination, an actuating member having a ta
pered shoulder thereon and having a screw-‘
threaded portion adjacent said shoulder, a key
15
bination, an actuating shaft having a tapered
engaging the teeth on said shoulder, a screw
member and arm».
'
-
6. In a device of‘ the class described and in com
member engaging said shoulder, ascrew-threaded
bination, an actuating shaft, a key member
mounted thereon, a rotatable clamping member
mounted on said shaft and engaging said key
key member for securing the key member against member for securing the latter against relative
said shoulder, a wiper arm rigidly secured to said ' displacement with respect to the shaft, a wiper
clamping member, and a ?nger carried by said arm rigidly secured to said clamping member, and
key member and engaging a portion of said arm a‘ laterally extending portion carried by said key
for providing a driving connection between “said member and ‘engaging said arm for retaining said
arm and clamping member against relative dis
‘
~
40 ‘key member and arm.
placement with respect to each other and to said
3. In a device of the class described and in com
bination, an actuating shaft having a tapered key member and shaft. '
shoulder thereon and having a screw-threaded
7. In a device of the class described and in
portion adjacent said shoulder, a key member combination, an actuating shaft having an outerv
annular portion of irregular contour, a key mem
mounted on said shaft and engaging said shoul
der, a screw-threaded clamping member mounted ber having an opening formed therein, the an
on the threaded portion of said shaft and engag
nular wall of said opening being irregular and
ing the key member for securing the key member conforming substantially to the irregular contour
against said shoulder, a bifurcated wiper arm of said 'outer- portion of the shaft, a bifurcated
rigidly secured to said clamping member, and a wiper arm carried by and operatively related to
clamping member mounted on the threaded por
tion of said'actuating member and engaging the
finger carried by said key member and positioned
between the bifurcations of said arm for providing
a driving connection between said key member
and arm.
'
1
4. In a device of the class described and in com
bination, an actuating shaft having a tapered
said shaft in a manner to be driven thereby, and
a laterally extending ?nger on said key member
positioned between the bifurcations of said arm
for providing a driving connection between said
key member and arm.
-
1
'
JOHN W.- ANDERSON.
55
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