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Патент USA US2129319

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Sept. 6, 1938.
Filed Feb. 18, 1938
Patented Sept. 6, 1938
Chester Arthur Gants and Daniel Arthur Gants,
Abilene, Kans.
Application February 18, 1938, Serial No. 191,322
3 Claims. (Cl. 123-173)
This invention relates to a cylinder head unit the passages are adapted to retain therein insulat
for internal combustion engines and more par
ing tubes or sleeves 9. The insulating material
ticularly to a cylinder head in which the usual forming the tubes or sleeves 9 may be of any de
sparking plugs are dispensed with.
sired material, such as heat resisting glass, quartz,
The principal object of the invention is to pro
porcelain or the like.
vide a cylinder head in which the spaced spark
Adjustable screw threaded electrodes it, having
ing electrodes for igniting the combustion mix
lock nuts II threaded thereon, are positioned in
ture in the cylinder are formed as an integral part each of the bosses 6 with their outer ends ter
of the cylinder head to thus eliminate inherent minating in approximately the center of the cir
disadvantages of the conventional sparking plug. cumference of the combustion chambers 4. The 10
A further object of the invention is'to incor~
electrodes I2 are retained in each of the insulat
porate the high tension spark gap interiorly of the ing tubes 9 with the ends of the electrodes ter
combustion chamber so that the electrodes may be minating a Slight distance from the electrodes It
of much sturdier construction than is customary to form a suitable spark gap therebetween. The
and to provide integral conduits in the cylinder electrodes 10 are screw threaded directly into the 115
head within which the electrical conductors to the bosses 6 and form a part of the cylinder head and
spark gaps are contained to obtain a clean en—
engine construction and are grounded thereto,
gine top without the usual array of ignition wires. While the=electrodes l2 are insulated from the
A still further object of the invention is to head or engine by means of the tube 9. The
so position the spark gaps that they are readily electrodes may be fabricated from any well known 20
accessible for replacement and adjustment.
heat resistant alloys which possess the necessary
In the drawing:
conductivity and stamina for such use.
Fig. 1 is a horizontal cross sectional view of a
A series ofinsulated high tension wires I3 are
cylinder head unit taken on line 2—2 of Fig. 2;
connected to the outer ends of each of the elec
Fig. 2 is a vertical cross section of the cylinder trodes l2, and, as seen in Fig. 1, this series of 25
head, showing the position of the electrodes and electrical conductors are carried through the lon
conductor conduit and the position of the cylinder gitudinal tube 1, which communicates with the
head on the engine block;
passageways 8. A suitable disc I4 is preferably
Fig. 3 is a partial top plan of the cylinder head ?tted into the outer end of the tube 1 so that
unit, showing the detachable combustion cham
the tube is completely sealed o? from dirt, water 30
ber closure plates.
and the like. The series of conductors I3 are run
More speci?cally in the drawing, numeral I de
from the disc into a unitary cable l5 and thence
notes a cylinder head unit, which, while illus
to the distributor or other electrical make- and
trated as a four cylinder engine head, may include brake device with which the engine is provided.
any number of cylinders desirable. The general
While the combustion chambers 4 may be 35
arrangement of the cylinder head is conventional,
in that it is of unit construction and contains the
customary cooling ?uid passages 3 along the sides
of the head and around the combustion chambers
40 4. The cylinder head unit is adapted to be bolted
directly to an engine cylinder block 5, and the
entire unit may be readily substituted for heads
now in use.
As seen from the drawing, integral internally
45 screw threaded bosses or projections 6 are cast
or otherwise formed in each chamber 4 when the
head is constructed and these bosses 6 extend
transversely from the wall of the combustion
chamber into the mid-section thereof. In the op
50 posite side of the head unit a longitudinal tube
1 runs the full length of the cylinder block and
connects with a plurality of transverse passages 8
communicating with the cylinder chambers 4.
The outlet passages 8 are positioned directly
56 opposite the bosses 6, and the outer openings of
formed with integral top portions, it has been
found desirable to close off the tops of each of
the individual combustion chambers 4 by means
of bolted and gasketed plate l6, having a screw
threaded plug l'l therein for testing the compres- 40
sion of the individual cylinder. When replace
ment or adjustment of the electrodes is neces
sary, it is a comparatively simple matter to re
move the bolts holding the plates Hi to give full
access to the interior of the cylinder.
It will be understood by those skilled in the
art that this invention provides a simple and
rugged sparking arrangement for internal com
bustion engines wherein the electrodes per se
may be of much heavier construction than is 50
possible with the customary sparking plugs and
furthermore, that by reason of their horizontal
position within the combustion chambers the
sparking takes place in approximately the cen
ter thereof which insures rapid propagation of 55
the combustion ?ame. This also lessens carbon
izing of the points and prevents oil condensation.
The invention also permits a much cleaner
external appearance of the engine and insures
that the high tension wires are completely in
closed to thus prevent deterioration, exposure to
accident, and complete absence of absorption of
Because of the considerably increased size of
bers formed in said head corresponding to and
directly above the bores of the cylinder of the
engine to which the head is applied, a pair of
oppositely extending electrodes secured to oppo
site sides of the chambers, a gap between the elec
trodes, one of said electrodes being threaded into
the wall of the chamber, while the opposite
spaced electrode is supported by but electrically
insulated from the chamber, a longitudinal pas
sage formed in said head and lying in spaced 10
e?'icient over long periods of operation, and when relation to the series of insulated electrodes and
adjustment or replacement is necessary, the elec ~ insulated electrical conduits leading from the
trodes are readily accessible.
While our invention has been shown in con
15 nection with a ?uid cooled engine, it is to be
understood that this is for ‘the purpose of illus
insulated electrodes through the longitudinal
passage to outside the head.
3. In an internal combustion engine, a cylin
der head therefor, said head comprising a unit
tration only and that the invention is equally having vertical passages extending therethrough,
applicable to engines that have solid heads and ' cooling medium conduits extending around the
those which are air-cooled.
What we claim is:
1. In an internal combustion engine, a remov
able cylinder head therefor, said head having
longitudinal water circulating passages therein,
transverse bosses integrally secured to the wall
one of said passages and extending into the
2,5 of
top of the cylinder chambers, electrodes secured
in said bosses, spaced electrodes secured to the
opposite circulating wall, said electrodes being
insulated therefrom, a conduit formed integrally
said wall lying at a right angle to said in
.39 with
sulated electrodes and electrical conductors se
cured to‘ each of said insulated electrodesv posi
, tioned in said conduit, and extending beyond to
the end of said head.
2. An internal combustion engine including a
removable cylinder head, a plurality of cham
passages and sides of the said head, a longitu
‘ dinal tube formed in one side of said head and 20
lying within one of said cooling medium con
duits, a plurality of spaced apart o?set passages
communicating with said tube and extending
into the vertical passages, electrodes mounted
in insulators secured in each of said offset pas 25
sages, electrical conductors connected to each
electrode, the conduits extending into and
through the offset passages and longitudinal
tube and complementary electrodes secured in
spaced relation to the insulated electrodes, said .
complementary electrodes being secured to and
electrically grounded to the opposite walls of
the» vertical chambers.
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