close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2121433

код для вставки
June 2l, 1938.
2,121,433
E. F. KETTUNEN
PISTON ACTUATED SWITCH
Filed July 11, 1935
1
INVENTOR.
EÁ‘?ler Ke italica.
I
QÀQÉTTORNEQ.
Patented June 2'1, 1938
2,121,433
UNITED STATES PATENT oFFlcE
2,121,433
PISTON ACTUATED SWITCH
Elmer`F. Kettunen, Windsor, Ohio
Application July 11, 1935, Serial No. 30,867
4 Claims. - (Cl. 20o-82)
My invention relates, in general, to piston ac
tuated switches, and more particularly to piston
actuated switches that are adapted to control
flasher or warning signal lights.
An object 'of my invention is the provision oi’
a pressure actuated device, taken in combination
with a toggle actuated switch having a quick
acting arm, wherein there is means provided by
the movement of the quick acting arm to con
trol the pressure actuated device.
Another object of my invention is the pro
vision oi an alternately actuated switch ‘that
may be utilized to control a dual set oi iiasher or
warning lights upon a motor vehicle.
lil
A further object of my invention is to provide
for decreasing the frequency at which the dual
set of ñasher lights are operated as the speed
of the vehicle increases, and for increasing the
frequency at which the dual set of flasher lights
are operated as the speed of the vehicle decreases,
when the vehicle is running normally on a level
road.
Another object of my invention is the ,pro
vision of operating my piston actuating switch
by the vacuum developed in the intake manifold
oi an internal combustion engine.
Other objects and a fuller understanding of
my invention may be had by referring to the iol
lowing description and claims, taken in conjunc
30 tion with the accompanying drawing in which;
Figure l represents a cross-sectional and longi
tudinal view or" a piston actuated switch embody
ing the features of my invention;
of a Icentral clamp band i3.
The end oftthìs
central clamp band i3 is provided with ears
through which a screw il extends and engages
the body of the bracket l5 which is mounted
' on top of the cylinder.
Also there are screws it
which extend through the central clamp band
i3 and threadably yengage the two semi-cylinders
il and l2.
The piston comprises a right hand head 2B
and a left hand head 2l connected together by
a longitudinal member 22. The two piston heads
2@ «and 2l are of like construction and in their
description the corresponding parts are desig
nated by the same lreference characters.
In
order to provide a good air tight seal, there is
provided a leather gasket
that is positioned
between each of the piston heads and the cyl
inder. An end washer 2t is held against the
end face of the leather gasket 2t! by means of
a screw 25. Each of the piston heads is provided
with a circumferential groove in which is mounted N â
a spring 2li that resiliently presses the leather
gasket it against the inside surface wall of the
cylinder. rl‘his construction provides a good air
tight sealso as to` obtain eiñcient operation of
the cylinder and piston assemblies. As illustrated, 25.
there is provided in each of the piston heads a
concentric depression
which is ñlled with
grease 2l, so that as the piston is actuated and
the grease heated, the said grease tends to flow
between the inner lace of the leather gasket 23 u
and the end oí’ each ci the piston heads. In this
manner the leather gasket 23 is well lubricated
Figure 2 represents a cross-sectional and trans
so afs to preserve long life and wear. As illus
verse view of the piston actuated switch, taken, trated, the piston is ioreshortened and thus pro
along the line 2--2 of Figure l;
vides a left hand piston chamber 29 and a right
Figure 3 represents a fragmentary and cross- ' hand piston chamber îlll.
The reciprocatory
sectional view of the valve for controlling the movement ci' 'the piston is controlled by the tog
reciprocatory movements of the piston actuated gie switch and valve assembly indicated generally
40 device; and
_
Figure ¿i represents a perspective view ci the
toggle switch and valve assembly.
With reference to ‘the drawing, my invention
comprises two main parts; namely, the cylinder
and piston assembly which is designated gener
ally by the reference character it, and the toggle
switch and valve assembly designated generally
by the reierence'character il. The cylinder and
piston assembly will be described lirst. y
50
'
As illustrated, the cylinder is constructed ot
a left hand, semi-cylinder il and a right hand,
semi-cylinder l2 having their open ends circum
ferentially joined together, such as indicated by
the reference character I9. These two semi
55 cylinders l l and l 2 are secured together by means
by the reference character t which will now be ¿
described.
`
The cylinder and the bracket lll which is
mounted thereon are provided with an opening
it along its upper edge through which the lower
most part ci the toggle switch and the valve as
sembly il extends into the cylinder. integrally
connected to the body bracket lli is an upright
against which the cup-shaped valve
¿lll slides. .As illustrated best in Figure 4, the
toggle switch and valve assembly comprises in 60
general a saddle 5t, a swinging arm élâl, an oscil
latory oiïs‘et lever
and a spring 5€?. The saddle
lill may be constructed of a metal stamping and
comprises two oppositely disposed sides 5l and
t2 which extend into the cylinder.
The lower 55
2
2,121,433
edges of the two sides 5l and 52 is provided with
a small recess into which the shoulders 56 and
51 of the oscillatory offset lever 54 engage, there»
byestablishing a fulcrum for the oscillatory oiîset
Ui lever 54.
'I'he lower'end of the oscillatory oiîset
lever 54 is bent in the form of a loop 55 which
fits into the socket 3| ci the longitudinal member
22 that interconnects the two heads of the piston.
The swinging arm 49 is provided at its lower end
10 with two notches 66 and 61 which rest respec
tively upon two outwardly extended tabs 64 and
65 of the saddle 50. These tabs provide the fulu
crum for the swinging arm 49. Extending across
the sides of the swinging arm 49 is a pin 62 to
which the upper end of the spring 48 is attached.
The lower end of the spring 48 is hooked into
an opening 63 provided in the upper end of the
oscillatory offset lever 54. The entire unit as
shown in Figure liis resiliently held together by
20 the spring 58. Therefore, in mounting or dis«
mounting the toggle switch and valve assembly
9, it may be inserted or removed as a unit. The
swinging arm 49 may be constructed of a metal
stamping in which the two upper switch tabs 12 and
25 13 may be formed during the stamping operation.
Attached respectively to the two switch tabs 12
and 13 are switch contact points 15 and 14 which
alternately engage two similarly constructed
switch arms 16 that are mechanically connected
30 to, but insulated from, the saddle 50 and the
body bracket I5. The right hand contact arm
16 is provided with a lower horizontal, portion
that is held between the two blocks of insulation
18 and 19, by means of the screws 80, which
35 screws also hold the saddle 50 to the upper side
of the bracket I5. The lower end of the right
hand contact arm 16 extends to the right of the
insulating blocks r18 and 19 to form a terminal
connection 84 which may be connected in circuit
40 relation with a lamp of a dual flasher system.
45
50
55
60
The left hand contact arm 16 is provided with
a lower horizontal portion and is held between
the two insulating blocks 8| and 62 by means
of the screws 83 which screws also hold the
saddle 50 against the upper part of the bracket
I5. The lower left hand end of the contact arm
16 extends to the left of the two insulating blocks
8| and 83 and forms a terminal 85 which may be
connected in circuit relation with a lamp of a dual
flasher system. The common connection of the
dual ñasher system may be connected to the ter
minal 86 which is electrically connected to the
swinging arm 49 through means of a body bracket
I6 and the saddle 50.
As illustrated; the Yrearward side of the swing
ing arm 49 is provided with an opening 69 and
the iront side of the swinging arm is provided
with an opening 10. Extending through these
two openings is the valve stem 68 of the cup
shaped valve 41. The clearance between the
valve stem 68 and the opening 69 is quite close,
but the clearance between the reduced and free
end of the valve stem 68 and the opening 1U is
quite large so that the face of the cup-shaped
65 valve 41 may be free to adjust itself relative to
the flat sliding surface 46 of the upright body
bracket 36. A spring 1I is interposed between
the cup-shaped valve 41 and the rearward side
of the swinging arm 49. This spring 1I resiliently
70 presses the face of the cup-shaped valve 41
against the flat surface 48 of the upright brack
et 36.
As illustrated best in Figures 1 and 2, the up
right body bracket 36 is provided with a duct 31
15 that is adapted to be connected in communica
tion 'with a hose 4I which is, in turn, connected
to the intake manifold ci an internal 'combustion
engine. At the top of the duct 31, there is pro»
vided a fitting 39 having a restriction 38 into
which is threadably attached a nipple 40 over
which ‘the hose 4I is connected. The lower end
of the duct 31 terminates in an opening 44 in the
face 48 oi the upright bracket 36,
spaced to
the left of the opening 44 is an opening 45 which
rearwardly extends through the upright bracket
36 and which is connected in communication
with the left hand piston chamber 29 by means
of a tube 43 and a `litting 59 having a restriction.
See Figure 3. By means of similar construction,
there is spaced to the right oi the opening 44,
an opening 46 which is connected in communica»
tion with the right hand piston chamber 38 by
means of a tube 42.
A cover 81 may be employed to keep the work
ing parts of the toggle switch and valve assem~
`bly 9 free of dirt and other foreign particles.
The lower edge of the cover B1 may rest upon
a suitable flange provided in the edge of the
bracket I5. The upper flat central part oi the
cover 81 may be provided with an opening
through which the fitting 39 may extend and
allow the flange of the said fitting 39 to hold the
cover 81 against the upper end of the upright
bracket 36. The cover 61 may also be provided
with slits through which the tubes 42 and 43 may
pass when inserting or removing the cover. The
entire assembly may be mounted upon, but inl
sulated from, any suitable part of the motor ve
hicle. To accomplish this mounting, the bracket
mounting 88 which is adapted to be connected to 35~
the motor vehicle has its upper end connected
to a block of insulation 89 by means of screws 9i.
The insulated block 89 is in turn connected to
the upright body bracket 36 by means of the
screws 90. The entire assembly is‘insulated from
the motor vehicle for the reason that the com
mon terminal 86 is electrically connected to the
bracket I5.
In the operation of my device, let it be as
sumed that the‘hose 4I is connected to the in
take manifold of an internal combustion engine
and that the position of the swinging arm 49 is
the same as that shown in Figure 1.
In this
position, the opening 44 is connected in com
munication with the opening 45 through means
of the cup-shaped valve 41. This means that
the left hand piston chamber 29 is connected in
communication with the vacuum of the intake
manifold of the internal combustion engine and
that the right hand piston chamber 3D is con
nected to atmosphere through the opening 46.
Therefore, the piston is urged to the left as
shown in Figure 1. As the piston proceeds to the
left, the oscillatory oilîset lever 54 is rotated in
a clockwise direction about the fulcrums 56 and (50
51. This means that the upper end of the oscil
latory offset lever 54 swings to the right. As the
upper end of the oscillatory offset lever 54 swings
to the right beyond a certain point, the spring
58 snaps the swinging arm 49 to the right there~
by connecting the opening 46 in communication
with the opening 44. Under this condition the
right hand piston chamber 30 1s connected in
communication with the vacuum of the intake
manifold of the internal combustion engine and "
the opening 45 is connected in communication
with the atmosphere. Under this condition, the
piston is urged' to the right, and as it reaches
a certain point, the swinging arm 49 swings to
the left being in the position shown in Figtuie l. le)
nf
2,121,488
vThis oscillatory action continues so long as the
device is connected in communication with the
vacuum of the intake manifold of the internal
combustion engine. The rate of the oscillatory
motion may be adjusted by using a fitting 39
having the correct size of restriction 38. If the
restriction is small the action will beslow, and if
large the action will be fast. The action of the
swinging arm 49 is quite quick by reason of the
10 snap action of the toggle arrangement. There
fore, when my device is connected in circuit rela
tion with a dual flasher system, the arrangement
is such that in the left hand position of the
swinging arm 49 such asrshown in Figure 1, one
lli: set of the dual flasher lights is connected in cir
cuit relation with the terminal 85 and the com
mon terminal 86, and when the swinging arm 49
is in the right hand position, the other set of the
flasher lights is connected in circuit relation with
the terminal 8f3 and the common terminal 86.
3
means for-actuating the valve by the quick acting
arm.
2. In combination, a pressure actuated device
having a housing and a movable part mounted
therein and actuated by the pressure therein, a
toggle actuated switch assembly having a saddle,
a quick acting switch arm pivotally mounted on
the saddle, an oscillatory member for actuating
.the quick acting switch arm, means for mounting
the saddle upon the pressure actuated device and
having a portion extend inside the housing, said
oscillatory member pivotally engaging the saddle
inside of the housing, means for actuating the
oscillatory member by the said movable part,
thereby actuating the quick acting switch arm
in accordance with the movements of the mov
able part, a valve for controlling the pressure in
the pressure actuated device, and ~means for ac
tuating the valve by the -quick acting arm.
3. In combination, a pressure actuated device
having a housing and a movable part mounted
munication with the vacuum of the intake mani
in said housing and actuated by the pressure
fold of an internal combustion engine, the action therein, fulcrum means supported by the pres
oi my invention is such that, when the motor sure actuated device, a switch having a quick
vehicle is running normally and on a level road, acting switch arm mounted outside of the hous 25
the frequency at which the dual sets of flasher ing and pivotally engaging the fulcrum means,
lights are operated decreases as the speed of the a second fulcrum means supported by the pres
vehicle increases and, such that‘the frequency at sure actuated device, an oscillatory member piv
which the dual sets of ñ-asher lights are oper
otally engaging the second fulcrum means and
ated increases as the speed of the motor vehicle extending- into said housing, resilient means in 30
decreases. rl‘his means that when a car is slow
terconnecting the oscillatory member and the
ing down, the dual set of ñasher or warning quick acting switch arm, so that movement of
lights ñicker faster than they will when the car the oscillatory member causes the resilient means
is increasing in speed. This gives the maximum .to actuate the quick acting switch arm, means
degree of weaning when it is most needed.
for actuating the oscillatory member by the said
Although ï have described my invention with movable part, thereby actuating the quick acting
a certain degree of particularity, it is understood switch arm in accordance with the movements
that the present disclosure has been made only >of the said movable part, a valve for controlling
by way of example and that numerous changes the pressure in the pressure actuated device, and
in the details of construction and the combina
means for actuating the valve by the quick acting
tion and arrangement or" parts may be resorted to switch arm.
.
without departing from the spirit and the scope
4. In combination, a pressure actuated device
of the invention as hereinafter claimed.
having a housing and a movable part mounted
l claim as my invention:
`
in said housing and actuated by the pressure
l. ln combination, a cylinder having an open
therein, a fulcrum member mounted on the hous
ing, a ioreshortened piston having two heads ing, said fulcrum member having two fulcrum 45
mounted in the cylinder, thereby making a pis
means, a switch having a quick acting switch
ton pressure chamber on opposite ends of the arm pivotally engaging one of said fulcrum
piston, a longitudinal member for connecting the> means, an oscillatory member pivotally engaging
inasmuch as my device is connected in com
two piston heads together, a toggle actuated
switch assembly having a saddle, a quick acting
switch arm pivotally mounted on the saddle, and
an oscillatory member for actuating the quick
acting switch arm, means for mounting the saddle
upon the cylinder and having a portion extend
inside the cylinder~through the said opening,
means for actuating the oscillatory member by
the said longitudinal member, thereby actuating
the quick acting switch arm in accordance with
the movements of the piston, a valve for con
trolling the pressure in the piston chambers, and
the other oi said iulcrum means, means for ac
tuating the oscillatory member by the said mov 50
able part, resilient means interconnecting the
oscillatory member and the quick acting switch
arm, thereby causing the movements of the os
cillatory member and the resilient means to ac 55
tuate the quick acting switch arm in accordance
with the movements of the said movable part, a
valve for controlling the pressure in the pressure
actuated device, and means for actuating the
valve by the quick acting switch arm.
ELMER. F. KETI‘UNEN.
Документ
Категория
Без категории
Просмотров
0
Размер файла
624 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа