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Патент USA US3022399

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‘Feb. 20, 1962
v. F. WOLRAB
3,022,389
ROTARY CIRCUIT BREAKER
Filed Dec. 29, 1959
@z
INVENTOR.
2
nite
Patent 0
3,022,389
Patented Feb. 20, 1962
1
2
3,022,389
FIGURE 5 is an enlarged detailed fragmentary sec
tional view on the line 5-5 of FIGURE 1.
Referring now to the drawings wherein like reference
RGTARY CIRCUIT BREAKER
Vincent F. Wolrab, RR. 1, Mount Vernon, Iowa
Filed Dec. 29, 1959, Ser. No. 862,540
4 Claims. (Cl. 200-24)
characters denote corresponding parts of the improved
rotary distributor of this invention includes a disc 10 of
insulating material, such as formica, a cover or shell 11
of material, such as aluminum designed to be positioned
over the disc 10 and having slots 12 therein, the slots being
This invention relates to distributors of internal com
bustion engines, such as engines of motor vehicles, and
in particular a carbon brush mounted to contact segments
positioned in registering relation with segments 13 in
in the periphery of a conductor disc mounted on a dis
10 circumferentially spaced slots 14 of the disc 10, a brush
tributor shaft whereby with the brush connected to a lug
15, of carbon or the like, has a cable 16 extended there
nut of a distributor, current is carried through the brush,
from to a clip 17 by which the brush 15 is connected to
segment, and conductor disc to the shaft of the distributor.
a lug nut 36 of a distributor, not shown, a U-shaped
The purpose of this invention is to provide a rotary
brush holder 18, in which the brush 15 is positioned, has
circuit breaker or distributor to replace the conventional 15 apertured outwardly and oppositely extending mounting
or reciprocating make and break points of a distributor
?anges 19 and 20 on the lower ends thereof which are
of an internal combustion engine.
mounted on a base 21, and the base 21 is mounted on a
In order to furnish current for the spark plugs of a
base plate 22 by which the brush holder 18 is secured in
motor vehicle engine the primary circuit of the coil is
position on the distributor.
opened and closed by small cams on a distributor shaft. 20'
The brush holder 18 is secured to the base 21 by rivets
23 and the rivets are insulated from the brush holder 18
To obtain exact timing, forming of the cams requires
accurate machine work. Even with high precision ma
chine shop practice, it is difficult to obtain a continuous
'
by sleeves 24. The rivets also extend through openings
25 and 26 of the base 21 and also through openings 27
or even break so that with the most accurate machine
and 23 of the conventional base plate 22.
work at least small sparks occur. The sparks cause cor 25
The brush holder 18 is also provided with an outwardly
rosion that decrease the e?’iciency of the distributor.
With this thought in mind this-invention contemplates a
distributor in which the contacts, which are carried by
a disc, rotate about the distributor shaft and contact a
?xed brush which makes and breaks the circuit with the
highest possible eiiiciency.
The object or" this invention is to provide a distributor
for an internal combustion engine in which the cam shaft
and breaker points are eliminated and in which the circuit
is made and broken by a brush contacting segments in a
extending right angularly disposed arm 30 having a slot
'31 positioned between upwardly extended parallel spaced
?ngers 32 and 33 between which the inner end of a spring
34 is secured and the spring 34 is positioned so that the
outer end 35 thereof bears against the brush 15, urging
the brush 15 against the outer surface of the segments 13
of the disc 10.
The brush 15 is positioned, as illustrated in FIGURE 1,
and with the parts in the position as illustrated, the clip
17 that is connected to the cable 16 that is connected to
the brush 15 is secured to the lug nut 36 of the conven
tional distributor housing whereby a circuit may be com
pleted from the lug nut 36 through the cable 16 and the
the distributor may be positioned in place of the conven
brush 15 to the disc 11 and shaft 37 of the distributor.
tional distributor of the engine.
The base plate 22 is secured in position on the dis
40
Another important object of the invention is to provide
tributor by a breaker pivot post 29 and a screw 38 making
a rotary distributor for an internal combustion engine in
it possible to adjust the position of the brush holder in
which sparking is eliminated.
relation to the disc 10 and cover 11. The disc 10 is pro
A further object of the invention is to provide a rotary
vided with a center opening 39 having ?at sides to corre
distributor for an internal combustion engine in which 45 spond with the distributor shaft.
the distributor assembly is of a simple and economical
With the parts assembled as illustrated and described,
construction.
the disc 10 and cover 11 are positioned over the shaft of
With these and other features and advantages in view
the conventional distributor and the brush holders secured
the invention embodies a disc having spaced segments
by the rivets or bolts to the base or vacuum advance plate
therein designed to be mounted on the shaft of a dis
22 of the distributor. With the parts in position the
tributor, an insulating disc positioned over the former
brush 15 is connected to a hot or live point of the dis
disc, a carbon brush slidably mounted in a brush holder
tributor by the cable 16 and clip 17 whereby upon en
and positioned to engage the segments of the disc on the
gagement of the brush 15 with one of the segments of
distributor shaft, resilient means for urging the brush
toward the segments of the disc, a base plate upon which 55 the disc, a circuit is completed. The circuits therefore,
created by each of the segments 13 are grounded to the
the brush holder is mounted, means for adjusting the
distributor shaft.
base plate to adjust the position of the brush, and a con
The distance between the segments 13 and the edges of
nection from the brush to a lug nut of the distributor for
the segments are calculated to hold a circuit completed
supplying current through the brush, segment and disc
a sufficient length of time to insure a positive spark. The
to the distributor shaft.
60
width of the segments and space between the segments
Other features and advantages of the invention will
may be varied to compensate for distributors of different
appear from the following description taken in connection
with the drawings, wherein:
manufacturers or of different vehicles in which the dis
tributors are used.
FIGURE 1 is a plan view of the improved rotary cir
cuit breaker or distributor with parts of the distributor
The position of the brush 15 is also adjustable by the
distributor disc.
Another object of the invention is to provide a rotary
distributor for an internal combustion engine in which
housing broken away.
FIGURE 2 is a side elevational view of the distributor
manipulation of the breaker pivot post 29 and the screw
38 to compensate for distributors of different manu
assembly shown in FIGURE 1.
facturers.
FIGURE 3 is an exploded view showing the brush and
The conductor cover 11 is positioned twenty-two and
mounting elements thereof.
70 one-half degrees out of phase with the lands on the dis
FIGURE 4 is an exploded view showing a disc and a
tributor shaft. The disc 10 should be positioned so that
cover for the disc.
the middle of each thirty degree segment is directly in
3,022,389
4
line with the middle of the ?at land in the distributor drive
positioned in registering relation with the segments, a
shaft.
By this means a positive spark is assured continuously
as sparking and corrosion resulting therefrom are sub
brush holder, means for mounting the brush holder on a
base plate of a distributor, a brush positioned in the brush
holder, a cable connecting the brush to a live point of a
stantially eliminated.
It will be understood that modi?cations, within the scope
of the appended claims, may be made in the design and
arrangement of the parts without departing from the spirit
of the invention.
What is claimed is:
distributor housing, and means for resiiiently urging the
brush into engagement with the periphery of said discs.
4. In a rotary distributor, the combination which com
prises a formica disc having circumferentially spaced radi
ally disposed vertically positioned slots extended inwardly
from the peripheral surface, segments positioned in said
1. A rotary distributor comprising a disc of insulating 10 slots, and an aluminum disc positioned over the formica
material, circumferentially spaced radially disposed seg
ments positioned in said disc, a covering disc positioned
over the disc of insulating material and having openings
therein positioned in registering relation with the seg
disc, said aluminum disc having slots therein positioned
in registering relation with the segments, a brush holder,
means for mounting the brush holder on a base plate of a
distributor, a brush positioned in the brush holder, a cable
ments, a brush, a holder for mounting the brush with the 15 connecting the brush to a live point of a distributor
housing and a spring mounted on the brush holder and
extended end thereof in contact with the periphery of
positioned to contact the brush to urge the brush into
the disc for engaging the segments, and a clip for con
engagement with the segments upon rotation of the
necting the brush to terminals of a conventional distributor
discs, said mounting positioning the brush to complete a
on the shaft of which the discs are positioned.
2. A rotary circuit breaker comprising a disc of insulat 20 circuit from the live point of the distributor housing
ing material, said disc having circumferentially spaced
radially disposed slots extended inwardly from the periph
ery, segments positioned in said slots, a covering disc posi
tioned over the disc of insulating material and having slots
therein positioned in registering relation with the seg 25
ments of the disc of insulating material, a brush, means
for mounting the brush whereby the extended end thereof
is in contact with the periphery of the covering disc, and
means for connecting the brush to terminals of a con~
ventional distributor housing.
3. In a rotary distributor, the combination which com
prises a formica disc having circumferentially spaced
radially disposed vertically positioned slots extended in
wardly from the peripheral surface, segments positioned
through the cable, brush, segment, and covering disc to
the shaft of the distributor.
References Cited in the ?le of this patent
UNITED STATES PATEI‘JTS
517,812
2,510,067
2,649,559
2,672,564
2,730,582
2,830,140
2,839,622
1894
1950
1953
1954
1956
1958
1958
FOREIGN PATENTS
in said slots, and an aluminum disc positioned over the 35
formica disc, said aluminum disc having slots therein
Bradner ______________ __ Apr. 3,
Callander _____________ __ June 6,
Wargo ______________ __ Aug. 18,
Krasno _____________ __ Mar. 16,
Jernigan _____________ __ Jan. 10,
Robertson ____________ __ Apr. 8,
Billing ______________ __ June 17,
525,752
Germany ____________ __ May 28, 1931
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