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Патент USA US2118745

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May 24, 1938.
A. o. TADEWALD
2,118,745
AUTOMATIC FEED AND VACUUM CONTROLLING DEVICE
Filed Sept. 20, 1937
2 ‘Sheets-Sheet 1
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#LEERT O Ems/4444a
May 24, 1938.
A_ Q_ TADEWAL'D
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2,118,745
AUTOMATIC FEED AND VACUUM CONTROLLING DEVICE
Filed Sept. 20,.19s7
2 Sheets-Sheet 2
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Patented
ay 24, 1938
[TED STATES PA E
2,118,745
AUTOMATIC FEED AND VACUUM
LING pEvroE
Albert 0. Tadewald, La ‘1 i a
NTROL
a.
Application September 20, 1937, Serial No. 16%,828
/
4 Claims. _ (Cl. 123-9103)
This invention relates to a feed and vacuum
controlling device of that type having as an ele
ment thereof, a diaphragm, and aims to provide
in a manner as hereinafter set forth, a device
5 operated by and dependent upon the intake man
ifold vacuum, which .will produce any desired
stabilization of the vacuum in the intake manifold
construction and arrangement, strong, durable, -'
compact, thoroughly efficient in its use, readily
set up, conveniently installed with respect to an
internal combustion engine, and comparatively
inexpensive to manufacture.
I
-
With the foregoingand other objects in view,‘
the invention consists of the novel construction,
for the purpose of automatically controlling by
combination and arrangement of parts as will be
vacuum acceleration and deceleration the speed
10 of internal combustion engines used in connec
more speci?cally referred to and are as illustrated
an embodiment of the invention, but it is to be
the stalling of the windshield wiper due to drop
in vacuum of intake manifold; to prevent a too
rectly to original throttle of carbureter); varia
rapid advance or retard on vacuum controlled
15 distribution depending upon its design; and for
improving the operation of all vacuum controlled
understood that changes (such as attaching di
tions and modi?cations may be resorted to which
fall within the scope of ‘the invention as claimed. W
In the drawings:
'
manifold vacuum of an internal combustion en
Figure 1 is a top plan view of the device in
stalled. with respect to the intake manifold of
gine.
the engine, -
or operated accessories attached to the intake
20
in the accompanying drawings wherein is shown 10
tion with automotive vehicles; also to eliminate
The speed of the engine of an automotive ve
hicle is regulated by the butter?y valve in the
carbureter. When the engine of the vehicle is
running normally, there is a vacuum created in
the intake manifold which sucks air in the car
25 bureter and causes the gasoline to vaporize. If
one presses his foot on the accelerator, it moves
the butter?y valve in the carbureter so as to in
crease or decrease the speed of the engine. When
the engine is running‘ at a fairly normal speed,
30 the air adjustment of the carbureter works per
fectly. However, when the engine is operating
at a fairly slow speed and one presses down on
the foot throttle, it causes the butter?y valve to
open abruptly. By reason of the slow speed of
35 the engine,_the vacuum in the intake manifold is
so reduced» that the windshield wiper stalls, the
spark on vacuum controlled distributor advances
or retards beyond its proper angle and the gaso
line coming into the carbureter is improperly
40 mixed which results in the stalling and sputter
ing of the engine, which is very objectionable. It
'
Figure 2 is a fragmentary view, broken away,
and partly in vertical section of the device in
stalled with respect to-the intake manifold and
carbureter of the engine and with the butter?y
or controlling valve of the carbureter illustrated
in dotted lines in idle position,
25
Figure 3 is a fragmentary. view in vertical sec
tion of a. modi?ed form,
Figure 4 is a view similar to Figure 2 of still
another modi?ed form in idle position,
Figure 5 is a section on line 5-5, Figure 4,
Figure 6 is a section on line 6—6, Figure 5,
Figure '7 is a fragmentary view in top plan of
the modi?ed form shown in Figure 4,
Figure 8 is ‘a view similar to Figure 4 of still
another modi?ed form in idle position,
Figure 9 is a fragmentary view in side eleva
tion of the modi?ed form shown in Figure 8 and
Figure 10 is a fragmentary view in longitudinal
section illustrating details of the form shown in
Figure 1.
With reference to Figures 1 and 2 the intake
is the aim of this invention to provide, in a man
. manifold of_an internal combustion engine is
ner as hereinafter set forth, a device for instal
indicated at I and a carbureter of the down draft
type at 2. The device includes the diaphragm
lation in relation to the carbureter, intake mani
45 fold and gasoline pump of the engine of an auto
motive vehicle for overcoming the objection
aforesaid as well as providing a practical vacuum
35 to be hereinafter referred to. - The controlling Mill
valve for the carbureter 2 is indicated at 3 and
is of the butter?y type. The valve 3 when the
diaphragm 35 is in the dotted line position in
controlled manifold for acceleration and decel
. dicated at X is disposed nearly horizontally as
eration relative to the speed of the engine.
50
clearly shown in Figure 2. The upper end of the 50
A further object of the invention is the elimi
manifold' l aligns with the lower end of the car
nation of dangerous gases due to proper combus
tion.
bureter 2. The aligned ends" of the manifold l
ind carbureter 2 are ?anged at i, M respectively.
Further objects of the invention are to provide,
The ?ange it is formed with a pair of diametrical
, in a manner as hereinafter set forth, a device for
55 the purposes referred to which is simple in its ly disposed, laterally extended apertured ears 5, 55
2
2,118,745
6. The ?ange 4°- is formed with a pair of di
ametrically disposed laterally extending ears 1,
8. The ear ‘I is apertured. Interposed between
the aligned ends of the manifold l and the car
bureter 2 is a sealing gasket 9 which is also ar
ranged between the ears and ?anges aforesaid.
The ears 5, 1 are connected together by the hold
fast means III.
The ear 8 is formed with a ver
tically disposed opening ||. carbureter‘ 2 at its
10 lower end is formed with a radially disposed
channel |2 which extends from the interior there
of to the opening I |. Mounted on the ear 8 and
registering with the wall of opening II is a
sealing gasket l3. Positioned on the gasket | 3
15 is a vertically disposed sleeve |4 formed inter
mediate its ends with a laterally extended tubu
lar extension. l5 provided with internal and ex
ternal threads. Positioned on the top of the
sleeve l4 and registering with the inner face
20 of the latter is a sealing gasket H3. The inner
_ _'face of the gasket l3, sleeve l4 and gasket I6
form ?ush continuations of the wall of the open
ing ||. Ebrtending through gasket l6, sleeve |4,
gasket I3 and opening II and threadedly engag
25 ing in the ear 6 is a headed clamping bolt |1
functioning tolbind the gasket l6, sleeve I 4, gas
ket l3 and ears 8_, 6 together. The head of the
bolt |1 seats upon gasket I61. The diameter of
the bolt I1 is materially less than the inner
30 diameter of the sleeve M. The channel l2, open
ing~ ||, gasket I3 and sleeve |4 provide a suc~
tion conduit. Adjustably engaging with the in
ner face of extension I5, is a ?anged tubular nip—
ple l8 of greater length than extension |5. The
35 channel I2 constitutes an outlet for the suction
conduit. The nipple |8 constitutes an intake for
threaded extension 33 which encompasses and
threadedly engages with the extension |5 on
the sleeve M. The housing sections 3|, 32 are
?anged as at 34 and with such ?anges disposed .
in alignment. Arranged between the ?anges 34
of the housing sections 3|, 32 and within the
housing 30 is a diaphragm 35 which divides
housing 38 into a pair of compartments indi
cated at 36,363. The opening 3|a forms an out
let for compartment 36. The ?anges 34 and 10
the diaphragm 35 are connected together by the
holdfast means 31. The section 32 of housing
30 axially thereof is formed with an opening 38.
Positioned against the central portions of the
faces of the diaphragm 35 are oppositely dis 15
posed washers 39, 40 having their perimeters
curved. Arranged against washer 39 and of
less diameter than the diameter of the latter is
a cup-shaped member 4| .
Positioned against
the washer 40v and extending outwardly through 20
the opening 38 from compartment 36a is a cou
pling bar 42 rabbeted at its outer end as at 43.
The diaphragm 36, washers 39, 40, member 4|
and coupling bar 42 are clamped together by a
headed screw 44 which extends axially through
member 4|, washer 39, diaphragm 36, washer 40
and has threaded engagement with the inner
end of the bar 42. The head of the screw 44
is arranged within and seats against the member
4|. Bearing against the nipple I8, extending 30
into and bearing against member 4|, as well as
surrounding the head of the screw 44 is a cali
brated vacuum controlling spring 45 normally
acting to maintain the diaphragm 35 in the
position shown in dotted lines Figure 2 which 35
would be equal to 2 to 3 inches of vacuum.
The
the vacuum conduit and also functions as a
calibrating means for a vacuum controlling
adjustability of the nipple l8 provides for cali
brating the spring 45.
spring to be referred to.
Fixed to the section 32 of the housing 30 is
a horizontally disposed outwardly directed sup 40
port 46 to which is pivotally connected, as at
-
The valve 3 is ?xed to its shaft l9 and is dis
posed diametrically of the carbureter 2. One
side of the latter is formed with a bearing 20
through which extends shaft |9. The latter is
also journaled in the body of the carbureter 2.
45 Fixed to the shaft l9 and abutting the outer end
of the bearing 20 is the tubular body part or hub
2| of a bell crank lever 22. The latter includes
40
a horizontally disposed arm 23 and a vertically
disposed arm 24 arranged at right angles to the
50 inner end of the arm 23. The inner end of the
arm 23 and the upper end of the arm 24 do not
align, but are formed integral with-the hub 2|.
The arm 23 is disposed at right angles to arm
24. The arm 24 depends from the hub 2|. The
55 outer end of arm 23 is forked as at 25.
lower end of arm 24 is forked as at 26.
The
41 one end of a lever arm 48 which extends across
and is pivotal at 49 upon the rabbeted outer end
of bar 42. The other end of lever 48 is pivoted
as at 50 to a combined _pull and push rod 5| for 45
the shaft l9. The rod 5| has its other end piv
otally connected, as at 52 to the forked end 26
of the arm 24 of bell crank lever 22. The rod
5| has ?xed thereon, intermediate its ends, a stop
collar 53. Slidably keyed upon the rod 5| is a 50
shiftable sleeve 55. The movement of the sleeve
55 in one direction is limited by the collar 53
and the latter also provides an abutment en
gaged by the sleeve when the latter is shifted for
the purpose to impart a pulling action to. rod 5|. 55
Connected at one end, as at 56 to the sleeve 55
‘
Pivotally connected to the forked end 25 of is a foot controlled accelerating rod 51.
arm 23 is a vertically disposed actuator 21 of I
When the rod 51 has moved in the direction
rod-like form pivotally connected to and for ac- ' of the arrow 51‘1 to cause sleeve 55 to leave col
60 tuating a bell crank lever 28 employed for op
erating a fuel feed pump 29 of any suitable con
struction and which may be of the form as dis
closed in Letters Patent 1,166,230 to Lemp, De—
cember 28, 1915. The bell crank 28 includes a
85 horizontal arm 293 and a vertical arm 2917 which
normally depends from the pivot 29° ‘of the
bell crank 28. The actuator 21 is pivotally con
nected‘ to the outer end of arm 28. The lower
end of the arm 29b is connected with the pump
structure
29 as at 299.
70
The device includes a diaphragm housing indi
cated at 30 and which is formed of a pair of
lar 53, the rod 5| will be moved in a like direc
tion carrying lever arm 24 therewith and rock
ing shaft l9 to open valve 3. When pressure is
relieved upon rod 51 it will move in an opposite
direction to abut collar 53. As is well known,
foot operated accelerating rods are spring con
65
trolled and in view of which when such rod is
relieved or pressure it will automatically return to '
oppositely. disposed sections 3|, 32. The section
its normal position. When shaft I9 is rocked by
rod 5|, lever 22 will be moved in a direction to
provide for the lowering of the actuator 21 70
whereby bell crank 28 will provide for the opera
tion of the pump structure 29.
The suction in the intake manifold, when rod
3| axially thereof is formed with an opening 3 |8
15 and with a laterally disposed tubular internally
51 is moved in direction 51a will be such as to
pull the diaphragm in a direction to compress 75
l
2,1 18,745
spring 45 and to provide; a pushing actionl‘for rod
5| whichtends to onengthe valve 3 and this ac
tion is continued until'the vacuum drops below
calibrated spring“.
_
When the driver steps with great force on the
foot operated accelerator of which the rod 5'!
forms a part, sleeve 55 leaves collar 53 and gives
rod 5| free action to open valve 3 to an angle
that is determined by the vacuum in the intake
10 manifold. When the motor is at high speed the
vacuum is high and therefore opens valve 3 com
pietely providing rod 5'! has moved sleeve 55 back
far enough to allow collar 53, which is on rod
5|, to open valve 3. The only time sleeve 55'
15 abuts the collar 53 is when the motor is idling,
at slow speeds or when the vacuum in the intake
manifold is above 2 or 3 inches of vacuum.
X-indicates position of diaphragm in idle po
sition with valve 3.
Y-indicates valve position when diaphragm is
in position as indicated in Figure 2.
shaft 12 in a manner to be referred to. Fixed to
the shaft 69 is the controlling valve ‘|‘| for the
carbureter 64 the valve being of the butter?y
type and also acting to control the vacuum.
When in inactive position or idle‘, the valve TI
is vertically disposed and when in active position,
it is arranged at an angle to the perpendicular by
a means to be referred to.
The intake manifold of the engine is indicated
at 18 and has its upper end-aligned with the lower 10
end of the carbureter 64. The lowerend of the
latter is formed with a ?ange 19 provided with a
pair of lateral ears 80, 8|.
The car 89 is aper‘
_
tured. The upper end of the intake manifold 18
is ?anged as at 82 and with the latter formed 15
with a pair of laterally disposed ears 83, 89. The
ears 8!], 83 are secured together by a holdfast
means 85.
The ear 8| is formed with a vertical ,
opening 88.
The lower endof the carbureter 54 v
is provided with a channel 81 which extends from
the interior of the carbureter to the opening 89.
By this action one has a combined vacuum and - Interposed between the aligned ends of the car
spark timing control which at low speeds and
heavy loads on an engine would ~maintain' a'cer
tain minimum manifold vacuum of the order of
two or three inches of mercury and at the same
bureter 89 and intake manifold 18 is a sealing
gasket 88. Positioned on the top of ear 8| is a
sealing gasket 89. Arranged on the gasket 89
is a sleeve 9|) formed intermediate its ends with
time permit the vacuum spark control to be set
an interiorly threaded tubular, extension 9|. Po
ahead of what it would be at wide open throttle V , sitioned on the sleeve 90 is a sealing gasket 92.
and no manifold vacuum; also under these condi
Extending through the gasket 92, sleeve 9|l,_gasket
tions to use a leaner fuel air ratio and prevent the
89 and opening 86 is a bolt 93 formed at its lower
stalling and sputtering of the engine.
end with a threaded portion 94 which threaded
With reference to the modi?ed form shown in
Figure 3, a sleeve indicated at 58 is for the same
purpose as the sleeve 19. Sleeve 58 is not formed
with an integral lateral tubular extension in the
manner as sleeve id, but in lieu thereof sleeve
58 intermediate its ends is formed with a thread
ed opening 59 with which an extension 69 which
is to be an integral part of the section 3| of hous
40 ing 39.
The v‘extension 69 is to be substituted
for the extension 33 and is formed of two dif
ferent inner diameters, the junction of which
provides the shoulder 8|. The portion of» reduced
inner diameter of the extension 68 is threaded
45 and has engaging therewith a tubular nipple 52
which is for the same purpose as the nipple l8.
The ?anged end 83 of the nipple 82 is for abut
ting shoulder '8|. The construction shown in
Figure 3 illustrates parts which maybe substi
59 tuted for the sleeve i8, extension l5, extension 33
and nipple l8.
.
With reference to Figures 4, 5, 6 and 7, the car~
bureter with which a device in accordance with
this invention may be employed is indicated at
M and formed with a pair of diametrically dis
posed openings 85, 86 and laterally extending col
lars 81, 88 which have their inner faces register
with the inner faces of the walls of openings 85,
88. Journaled in openings 85, 89 and collars '61,
80 88 is a tubular shaft 99 which extends outwardly
from the collar 81. Fixed on that end of shaft
59 which projects from the collar 91 is a collar
‘ill having an outwardly directed arm’ ‘ll of ar
cuate cross section. Extending through and pro
85 jecting fromeach end of the shaft 99 is a shaft
92 carrying a retaining means 13 at one end which
abuts the collar 68. The shaft 12 has‘ ?xed there
:30
portion engages in a screw threaded socket ‘formed
in the ear 84.
The bolt
3 has a threaded upper
portion 95 which is enga ed by a clamping nut
98 of the cap type. The bolt 93 and nut 98 func 35
tion to clamp gasket 92 and sleeve 99, gasket 9|
and ears 8|, 84 together. The opening 88, chan
nel 81, gasket 89 and sleeve 99 form a suction
conduit communicating with an opening. 9'!
formed in the body of the sleeve 99. The ex
tension 9| forms a continuation of the open
e.
ing 87.,
The device includes a diaphragm housing 98
formed of. a pair of oppositely disposed laterally
?anged sections 99, I09. Anchored between the
?anges of the sections 99, I98 and extending
across the housing is a diaphragm Hill which di
vides the housing into a pair of compartments
I82, M3. The section 99 of housing 98 is pro‘
vided axially thereof with an opening m9 and
said section 9| on its inner face is provided with
a boss “)5 bordering the opening H94. Formed
integral with the outer face of section 99 and
registering with opening HM is a tubularexten
sion |98 having its inner face upon two different i,
diameters to provide an internal shoulder.’ The
portion of largest inner diameter is indicated at
|0'|, the portion of smallest inner diameter at I98
and the shoulder at M9. The outer end ofv the
extension H86 is reduced as at NO. Theportion
of smallest inner diameter I96 is threaded. The
reduced portion N9 of extension M18 is threaded.
The saidreduced portion i I0 threadedly engages
with the inner face of the extension 9| to provide
for connecting extension E08 with the sleeve‘ 99.
Threadedly engaging with the portion of smallest
inner diameter of the extension £96 is a (periph
erally threaded ?anged tubular nipple ill hav
rabbet 15 of arcuate contour. The outer diame¢ ; ing its ?ange normally abutting the shoulder |99._
The nipple ||| functions for the same purpose 70
70 ter of sleeve ‘l9 corresponds to the outer diame
as the nipples l8 and 93.
‘
ter of collar 18. The shaft 12 has secured there
Arranged against the opposite faces of the dia
with a retaining means ‘it which abuts the sleeve
‘Hi. Thelength of the rabbet i5 is greater than jphragm l?l at the central portion of such faces‘
the cross sectional length of ‘the arm ‘H where
"are oppositely disposed washers H2, H3 having
75 by shaft '89 can be shifted, independently of the their perimeters curved. The section m8 ‘of the
on a sleeve 19 formed at its inner end-with a
4
> 2,118,745
housing 98 has an axial opening H4 through
which extends a coupling bar H5 of the same
form as the bar 42 and functioning for the same
heavy loads on an engine will maintain a certain
minimum manifold vacuum of the order of two
or three inches 'of mercury and at the same
purpose as bar 42. ' Positioned against the washer
time, permit the vacuum spark control to be set
H2 is a washer H6 of materially reduced size
ahead of what it would be at wide open throttle
and no manifold vacuum. Also, under these con
with respect to that of washer H2. Extended
through the diaphragm I M axially thereof as
well as through the washers H2, H3, H6 and
anchored in the inner end to the coupling bar
ditions, to use a leaner fuel/ air ratio and prevent
the stalling and sputtering of the engine and re
ceive greater mileage on fuel.
'
10 -I I5 is a headed screw H1 for clamping the washer
With reference to Figures 8 andv 9, a 'down
H6, washer II 2, diaphragm I0l, washer H3 and
draft carburetor is indicated at I36, its butter?y
bar H5 together. Arranged in the extension I06
and abutting against the ?anged end of the nipple "
III and also abutting against washer H6 is a
15 calibrated spring I I8 for controlling the vacuum.
The idle position of the device is as shown in
Figure 4 with the spring I I8 expanded and shift
ing the diaphragm IOI in" one direction to provide
for washer H3 closing the inner end of- open
ing H4.
_
The sleeve 14 is provided withva crank arm H9
having a forked outer end I20. The arm H0
extends upwardly from the collar 10 and is nor
mally disposed at an outward inclination from
‘its lower to its upper end. Collar 10 has formed
therewith a depending crank arm I2I having its
lower end forked as at I22. The arm I2I inclines
in an opposite direction from its upper end than
the inclination of the arm H9 from the lower
. end of the latter.
The upper end'of the arm
H9 is pivotally connected as at I23 to‘the rod
I24-of an accelerator mechanism.
The sleeve 14
' has a lateral extending crank arm I25 which at‘
its outer end is pivotally connected as at I25 to an
actuator I21 for the fuel pump.
'
Extending rearwardly from the section I00 of
housing 98 is a support I28 to which is pivotally‘
connected as at I29 one end of ,a lever member
valve at I31 and the operating means for the
latter at I38. The intake manifold of the engine
is indicated at I39 and which endwise aligns with
carburetor I36.‘ The opposite ends of carburetor 15
I36 and manifold I39 are ?anged as at I40, _I4I
respectively, and interposed between'such ends
is a plate I42 formed with an opening I43 having
its wall aligning with the inner faceslof said
?anged ends. The edges of the ?anges I40, MI 20
and plate I42 are ?ush. The plate I42 is formed
with a’channel I44 which leads from the open
ing I43 and terminates in a threaded socket I45
opening at the edge thereof. The plate I42 is
formed with an opening I46 which intersects the 25
channel I44. The ?anges I40, MI and plate I42
are anchored together by the holdfast means
I41. One of the means I41 extends through the
opening I46. Arranged in the opening I43 of the
plate I42 is a butterfly valve I48 carried by a 30
shaft I49 journaled in and ‘extended from plate
I42. Connected to shaft I49 exteriorly of plate
I "is a crank arm I50. A diaphragm- structure
of the same form as that shown in Figure 4 is
indicated at I5I and which has its tubular ex 35
tension I52 extend into and is anchored to the
wall of the socket. Extending from, connected
to and shifted by the diaphragm of structure
I30. The latter is mounted intermediate its ends - I5I is a movable part I53 which corresponds to
upon the rabbeted outer end I3I of the coupling part H5 of Figure 4, but it is not rabbeted. The
bar H5. The pivot for the member I30 is indi - part I53 includes a horizontal leg I54 and a ver
cated at I32 and is ?xed to and extends above the tical leg I 55. The leg I54 slidably extends into
lower wall of the rabbet on the‘outer end of the the housing and is ?xed to'the diaphragm of.
bar H5. The other end of the lever member structure I5I. The leg I55 is pivotally connected
45 I30 is pivotally connected as at I33 to the rear
end of a rod or bar I34 for the shaft 69. The
other end of the rod or bar I34 is pivotally con
nected as at I35 to the lower end of the crank
arm I2I.
.
Operation of'the form shown by Figure 4:
The diaphragm is in its idle position (motor
not running). When the motor is started the
vacuum of the intake manifold is present on dia
I58.
.
-
.
the intake manifold pulls the diaphragm of the 50
diaphragm structure in a direction to closethe
inner end of the tubular extension. As the dia
phragm moves towards the tubular extension the
part I53 is carried therewith whereby the rod I51
moves in a direction towards the carburetor and 55
phragm II“, but produces no results because rod
I24 which is connected to foot feed and crank
which in turn will open the butter?y valve I48_
and permits the carburetor being free to operate
arm H9 holds back arm I2I by its rabbet and
as normal. When the driver steps on the foot
operated accelerating mechanism with a great
deal of force, the butter?y valve which is above 60
thereby prevents lever I30 and I34 from opening
throttle 11. When the foot feed pushes rod I24
in the direction of arrow I21!a the crank arm H9
follows in the same direction which has a tend
ency to leave the rabbet on arm I2I but the
vacuum action on diaphragm IOI pulls lever I30
which in turn pulls I34 in the direction of arrow
70
at
When the motor is started the vacuum from
The spring H8 functions for the same purpose
as the spring 45.
at its upper end, as at I56 to a rod I51 which is 45
common to crank arm I50 and leg I55. The rod
I51 is pivotally connected to crank arm I50 as
I348'and that operates arm I2I which is connect
ed to throttle 11. Now when the driver steps on
the accelerator with force, arm I24 and crank
arm H9 opens completely and arm I2I follows
until the vacuum or the diaphragm IOI reaches
3 inches of‘vacuum and that determines the an
gle of throttle 11 as the motor gains speed ‘the
throttle will open in proportion to its torque.
By this action one has a combined vacuum
75 and spark timing control which at low speeds and
the valve I48 opens completely and the intake -
manifold vacuum drops rapidly, but cannot go
below the vacuum at which the calibrated spring
within the diaphragm structure is set. It will
be assumed that the calibrated spring has been 65
set to close the valve I48 to six inches of vacuum.
Now when the driver steps on the foot acceler
ating mechanism with force, the rod I51 partly
closes the valve I48 and keeps the intake mani
fold at six inches of vacuum.
What I claim is:
p
70
.
1. In an automatic feed and vacuum control
ling device for internal combustion engines, a
structure providing a fuel conducting passage
leading from a carbureter to the intake manifold 75
2,118,745
of the engine, a rotatable unit iournaled in said ing in unison and one constituting a rotator for
structure and including a vacuum controlling the unit and the other an actuator for the actu
valve arranged in said passage, said structure ating means, said structure including means-pro
including a vacuum conduit opening at one end viding, a vacuum'conduit opening at its outlet end
into said passage between said valve and said into said passage between said valve and said
intake manifold, a housing including a tubular manifold, a housing including a tubular exten-'
extension connected to said structure and open I sion connected to saidstructure and opening into
ing into the other end of said conduit, a spring said conduit at the intake end thereof, a spring
controlled vacuum operated diaphragm arranged
10 in said housing, the controlling spring for said
diaphragm being arranged within, and project
ing from said extension into said housing against
the diaphragm, said structure including an ad
15
justabie intake, nipple for said conduit bearing
against and providing for calibrating said spring,
means including an adjustable intake nipple forv
said conduit bearingv against and providing for 15,
and an oppositely movable shiftable means for
calibratingsaid spring, and a shifting means for
rotating said unit in opposite directions operated
bodily rotating said 'unit and shifted in opposite
from and connected to said diaphragm, extended
outwardly from said housing and connected to
directions from and connected to said diaphragm,
extended’ outwardly from said housing and con
said unit.
nected to that arm constituting a rotor for said 20
'
2. In an automatic feed and vacuum control
ling device for internal combustion engines, a
structure providing a fuel conducting passage
leading from a carbureter to the intake manifold
of the engine, a rotatable unit journaled in said
structure and including a vacuum controlling
valve arranged in said passage, said structure inq
cluding,a vacuum conduit opening at one end
into said passage between said valve and said in
30 take manifold, a housing including a tubular ex
tension connected to said structure and opening
35
controlled vacuum, shifted diaphragm arranged
within 'the housing adjacent said extension, the 10
controlling spring for the diaphragm being ar
ranged within and projecting from said extension
into the housingagainst the. diaphragm, said
‘unit.
I
Y
4. In an automatic feed andvacuum control
ling device for internal combustion engines, a 4
structure providing a fuel conducting passage
leading from a carbureter to the intake manifold 25
of the engine, a rotatable feed and vacuum con
trol unit journaled in said structure including a
vacuum controlling valve arranged in said pas
sage. a fuel feed control exteriorly of said passage
for a fuel accelerating pump and a pair of spaced 30
crank arms exteriorly of said passage bodily mov
into the other end of said conduit, a spring con
ing in unison and. one constituting arotator for
trolled vacuum operated diaphragm arranged in
‘the unit and the other at actuatorifor the actu
said housing, the controlling spring for said dia- ’ ating means, said structure including means pro;
phragm being arranged within and projecting ~ vlding a vacuum conduit opening at its'outlet end 35
from said extension into said housing against the
diaphragm, said structure includingan adjust
able intake nipple for said conduit bearing against
into said passage between‘ said valve and said
manifold, a housing including a tubular exten
sion connected to said structure and opening into
said conduit at the intake end thereof, a spring
and providing for'calibratlng said spring, an op
positely movable shlftable means for rotating said ' controlled vacuum‘ shifted diaphragm arranged 40
unit in opposite directions operated from and within the housing adjacent said extension, [the
connected to said diaphragm, extended outward
controlling spring for the diaphragm being ar
ly from said housing and connected to said unit,
the said shiftable means being provided with an
ranged within and projecting from said extension
45 abutment, and means slidably mounted on said
shiftable vmeans and coacting with said abutment
for bodily moving said shiftable means in one
direction to rotate said unit independent of said
diaphragm.
50
-
a
r
3. In an automatic-feed and vacuum control»
into the housing’ against the diaphragm, said
means including an adjustable intake nipple for is .
said conduit bearing against and providing for
calibrating said spring, and a. shifting means for
bodily rotating said unit and shifted in opposite
directions from and connected to said diaphragm,
extended outwardly from said housing and con 50
nected to that arm constituting a rotor for said
unit, the said shiftable means being provided with
an abutmenaand means slidably mounted on said
shiftable means and coacting with said abutment
ling device for internal combustion engines, a
structure providing a fuel conducting passage
'leading from a carbureter to the intake manifold
of the engine, a rotatable feed and vacuum‘con
55 trol unit journaled'in said structure including a for bodlly'moving said shiftable means in one 55
vacuum controlling valve arranged in said pas direction to rotate said'unit independent of said
e
_
.
sage, a fuel feed control exteriorly of said name i diaphragm.’
for a fuel accelerating pump and a pair of
'
ALBERT 0. TADEWAID.
crank arms exteriorly of said
bodily mov
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