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Патент USA US2411702

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Nov. 26, 1946.
Filed Dec. 2'7, 1944
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NOV. 26, 1946.
Filed Dec. 27, 1944
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Patented Nov. 26, 1946
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Harry E. Wilbert, Sn, Harrisburg, Pa.
Application December 27, 1944, Serial No. 569,935.
2Clalms. (01. 200-59)
The present invention relates to new and use
. ful improvements in signaling devices for auto
mobiles and other motor driven vehicles em
bodying means operated by the driver of the
vehicle to indicate an intention to turn in either
Referring now to the drawings in detail where
in for the purpose of illustration I have disclosed
a preferred embodiment of the invention, the
numeral 5 designates a switch housing having a
recess 8 at one end for receiving a steering post
1 for‘ attaching the housing to the post by means
of a clamping plate 8, the switch housing being
An important object of the present invention
held stationary by the housing for the steering
is to provide signaling lamps carried by the ve-'
post. The housing 5 is closed by a cover plate 9.
hicle and adapted to be energized by a push hut
ton switch means carried by the steering post of 10 A pair of U-shaped plungers iii are slidably
mounted in the front end. of the housing 5 and
the vehicle to energize and maintain the lamps
are slidably supported within the housing by
in signaling position for a predetermined inter
means of a partition ii, the 'inner ends of the
val prior to the turning of the vehicle and also
plungers being threaded and provided with inner
including means carried by the steering wheel
for deenergizing the lamps upon the turning of 15' and outer adjusting nuts l2 and i3.
the vehicle in either direction.
A still further object is to provide an appa
ratus of this character of simple and'practical
The inner ends of the plungers are freely in
serted through vertically extending slots i4
formed in plates l5 on the lower end of plungers
i 6 projecting upwardly through an opening ii
operation, relatively inexpensive to manufacture 20 in the cover plate 9. The nuts i2 and i3 are
construction, which is e?icient and reliable in
and install in operative position upon the ve
hicle without necessitating any material changes
positioned at opposite sides of the plates IS.
The plates i5 are also formed with ears I8
to which the inner end of a switch arm I9 is
or alterations therein and which otherwise is
pivotally attached by means of a pin 20.
well adapted for the purposes for which the
The switch arm i9 is positioned in spaced par
“same is intended.
allel relation between the legs of the plunger 10
and is pivotally mounted intermediate its ends
on rods 2| secured to the inside of the housing 5
fully hereinafter described and claimed, refer
by means of brackets 22. The inner end of the
ence being had to the accompanying drawings
forming part hereof, wherein like numerals refer 30 switch arm I9 is formed with an upstanding
knife blade 23 adapted for movement into and
to like parts throughout, and in which:
» out of engagement with a pair of spaced apart
Figure 1 is a top plan view showing the sig
contacts 24 for frictionally engaging the con
naling housing mounted in position on the steer
tacts in the manner of a knife'switch.
ing wheel of an automobile. 9'
The front end of the switch arm l9 extends
Figure 2 is a front elevational view thereof.
downwardly as indicated at 25 and is formed at
Figure 3 is a plan view of the signal housing
its low-er end with a switch blade 26 in frictional
with the cover plate removed therefrom.
engagement with a pair of spaced apart con
Figure 4 is a transverse sectional view taken
tacts 21 secured to the partition ll.
substantially on a line 4-4 of Figure 3.
A plunger 28 is pivotally attached to the verti
Figure 5 is a longitudinal sectionalview taken
cal extension 25 of the switch arm and projects
substantially on a line 5-5 of Figure 3. '
Figure 6 is a transverse sectional view taken
end of the through
housing an
5 and
in the28a
in of
substantially on a line 6-'-8 of Figure 3.
movement of the bight portion of the outer end
Figure 7 is a fragmentary sectional view taken
45 of the plunger It). It is to be noted that the
substantially on a line 1-1 of Figure 3.
opening 28a, Figure 5, is of a size slightly larger
Figure 8 is a fragmentary sectional view show
than the circumference of the plunger 28 and
ing the switch in closed position.
has a gradually increasing sloped side wall ex
Figure 9 is a fragmentary elevational view of
tending from the exterior face of the front end
the cam carried by the steering wheel for open
50 of the housing 5 t0 the interior face thereof.
ing the switch.
This opening 28a permits free pivotal movement
Figure 10 is a similar view showing another
of the plunger 28 when the plunger i0 is pushed
position of the cam.
- inwardly to an extent such that the inner surface
Figure 11 is a similar view showing the cam
of the bight portion of the latter is in contact
in position for opening the switch, and
Figure 12 is a diagram of the signaling ‘circuit. 55 with the projecting end of the plunger 28.
Other objects and advantages reside in the
details of construction and operation as'more
A garages
C‘oil springs‘ 2d are mounted on the legs of
the plunger l0 between the partition ii and the
front wall of the casing and engaging collars
3t secured to the legs of the plunger to yield“
ably urge the plunger outwardly of the casing
and with the bight portion of the plunger spaced
slightly outwardly from the plunger 28 of the
switch arm.
arm id is likewise pivotally moved about its pivot,
causing the end of the knife switch ‘rliland as to
engage its complemental contact 25 and N re=
- speetively to close the circuit and energize the
left hand signal 38. The movement of the
. switch
59 about its pivot 28 results in piv=
otal movement of the plunger it, such move
ment of the latter causing its advancement'to
vBy reason of this construction the initial in
va position such as to engage the beveled surface
ward movement of the plunger it will cause a 10 3hr of the cam 3i. Thus, the inward movement
pivotal movement of the plate It from the posi
~ of the plunger iii designated for a left hand turn,
tion shown in Figure 5 of the drawings to the
as shown in Figure 1, results in the plate 85 and
position shown in Figure 8 and the subsequent or
the associated plunger it to be shifted from the
continued movement of the plunger id willcause
position illustrated in Figure 5 to the position
the bight portion of the plunger it to engage the 15 illustrated in Figure 8. Such inward move
plunger 28 and pivot the switch arm it so as to '
ment of the plunger i0 likewise results in the
close the circuit between the switch blade 2'3 and
shifting of the plunger i5 from a position of
the contacts 'Zél as well as between the blade 26
contact with the ?at under surface of the cam
and the contacts 2?.
3iv as illustrated in Figures 5 and 6 to a posi
The initial inward movement of the plunger 20 tion of contact with the complemental beveled
it will move the plates i5 forwardly and move '
surfacedia of the cam as shown in Figures 8'
the plunger l5 rearwardly from its upright posi
tion under an arcuate cam 3i into its inclined
position and is held in such position by friction
against the sloping or beveled edge 3hr of the
The cam is secured to the underside of
and 9. The plunger it is then held in fric
tional engagement with the beveled or sloping
edge 39a of the cam which will maintain the
switch arm in circuit closing position and hold
the plunger ill inwardly against the tension of
the spokes 32 of a steering wheel 33, the cam
the springs 29.
36 being adapted to travel in a channeled guide
The turning‘ of the steering wheel 33 in the
36 secured to the top 9 of the housing.
proper direction to cause the automobile to
The contacts 24 and 2‘! are connected in the 30 execute the indicated left hand turn results in
electric circuit of the automobile with the battery
a corresponding arouate movement of the ‘cam
36 and with which the direction switch lamps
3i. - With the arcuate movement of the cam 39,
31 and 38 are connected, the signaling arms i9
the beveled surface am is progressively advanced
functioning as conductors for making and break
over the contacting top of the plunger l6, then _
ing the circuit for the lamps through the-con 35 the tapered surface 31b is so advanced over the
contacting top of the plunger i6, and ?nally at
The switch arms I9 and contacts 26 and 2?
are constructed of conductive material while the
housing 5 and remaining parts of the device are
constructed of insulation material.
- Separate plungers l0, switch arms 59 and their
associated parts are provided for the right and
left direction signals 3'! and 38 and the outer
ends of the plungers are marked with suitable
legends to correspond with said signals. The
plunger I6 is normally held upright, as shown in
Figure 5, by the plunger ill, the top of the plung
er it being positioned under the ?at bottom
portion of the arcuate cam ti .
the termination of such movement the under
surface of the cam 3i contiguous to the tapered
'surface 38b is in contacting engagement with
40' the top of the plunger it, as shown in Figure 10.
Upon completion of such movement of the cam
3! in which the top of the plunger is in contact
ing engagement with the under surface 'con
tiguous to the tapered surface 3H), the plunger
45 is released, thereby resulting in the’switch arm
i9, plunger 28, and plate E5, to return to their
normal position
springs 2Q.
The same operation occurs for indicating a
'In the operation of the device when the driver 50 right hand turn by depressing the plunger it
desires to make a left hand turn, Figure l, the
for the right hand signal.
properly designated plunger ill is pushed in
It is believed that the details of construction
wardly. The pushing of the plunger it inwardly
and manner of use of the device will be readily
?rst causes the inner surface of the bight por
understood from the foregoing without further
tion of‘ said plunger to be moved until it is in 55 detailed explanation.
bearing contact with the projecting end of the
plunger 28. This movement of the bight por
claimed is:
tion of the plunger ID from its normal position
l. A vehicle signal comprising a knife switch
to only the point of bearing contact with the
adapted for making and breaking the circuit
complemental end of the plunger 28 results in a
with a signal element, said switch being fric
slight compression of the springs 29 and shift
maintained in circuit closing position,
ing of the plate l5 forwardly to a slight extent,
a plunger for moving the switch into closed
the shifting of_ said plate likewise causing a
position, a second plunger adapted for manual
slight movement of the plunger l6 from its nor
operation, a switch releasing member pivoted
mal position of contact with the under ?at sur 65 to the switch and operatively connected to the
faceof the cam, Figure 5, toward the beveled
second plunger, a cam adapted for attaching to
edge Bio of said cam. With the continued push
a vehicle steering wheel and having a sloping
ing inwardly of the plunger ID, the springs 29 are
edge, said releasing member being disposed un
further compressed and the plunger 28 caused
der thgacam, said ?rst plunger being disposed
to exert a pushing force upon its pivotal con‘
in the path of movement of the second plunger
nection to the extension 25 of the switch arm '
to move the releasing member from under‘the
ill to thereby be pivotally moved about such
cam into frictional engagement with the sloping
connection. With this pivotal movement of the
edge thereof upon an initial movement of the
plunger 28 about its pivotal connection on the
second plunger, said cam being adapted to travel
extension 25 of the switch arm it, the switch is beyond the releasing member upon a predeter
‘ 2,411,702
mined turning movement of the steering wheel,’ ‘_ connected to the said outer plunger, a cam
and spring means carried by said second plunger
to move the releasing member into the path of
adapted for attaching to a vehicle steering wheel,
said releasing member being normally disposed
the cam upon a movement of the steering wheel
in an opposite direction to open the switch.
2. A vehicle signal comprising a pair of man
4 under the cam and said releasing memberbeing
movable from under the cam upon an initial in
ually operable plungers, including an inner plung
releasing member being held in such position
ward movement of said outer plunger, and said
er and an outer plunger, said inner plunger be
until the travel of the cam past said releasing
ing disposed in the path of the outer plunger for
member, and spring means carried by said outer
subsequent operation of the said inner plunger '1'0 plunger for retracting the latter and moving said
by the said outer plunger, a switch comprising a
releasing member into position for engagement
switch blade arranged for closing movement by
by the‘ cam upon its return. movement to open
the said inner plunger, a switch releasing mem
the switch.
ber pivoted to said switch blade and operatively _
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