Spark Plug for Internal-Combustion Engines Page: 3 of 3
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observed that as the source of electrical en-
ergy becomes higher powered, as for in-
stance in the speeding up of a magneto due
to the operation of the motor already re-
5 ferred to, the induced sparks .will increase
in strength, and breadth until the members
13, 8, and 10 may be substantially enveloped
thereby.
I now desire it understood that I do not
10 confine myself to one pair of oppositely dis-
posed electrodes 9 and 11, as for instance, in
Figs. 6 and 7, I illustrate a plurality thereof
disposed concentrically about the insulated
electrode 8.
15 In Figs. .2, 3, 4, and 5, I show electrodes
of various shapes in cross section, any of
which may be employed without .change or
modification.
While herein I have disclosed the pre-
20 ferred mode of practising my invention, I
may make such changes and alterations
therein as may occur to one skilled in -the
art, or permitted under the doctrine of
equivalents.
25 Having thus fully described my invention
I claim as new and desire to secure to
myself by Letters Patent of the United
States:-
1. An article of the class described includ-
30 ing a body and a member insulated there-
from, passing through said body and there-
beyond, a member. non-insulated and de-
pending from said body, and divergingly
arranged with respect to said insulated
35 member, and another member non-insulated
and likewise depending from said body and
convergingly arranged with respect to said
insulated member.
2. An article of the class described includ-
40 ing a body and a member insulated there-
from, passing through said body and there-
beyond, a member non-insulated and de-
pending from said body, and divergingly ar-
ranged with respect to said insulated mem-
45 ber, and another member non-insulated
and likewise depending from said body
and convergingly arranged with respect to
said insulated member, said non-insulated
members being disposed in parallelism to
5V each other.
3. An article of the class described includ-
ing a body and a member insulated there-
from, passing through said body and there-
beyond, a member non-insulated and de-
55 pending from said body, and divergingly
arranged with respect to said insulated
member, and another member non-insulated
and likewise depending from said body and
convergingly arranged with respect to said
3o insulated member, said non-insulated mem-
bers being disposed in parallelism to each
other, and in adjacency to said insulated
member..4. An article of the class described includ-
ing a body and a member insulated there- 6s
from and passing through said body and
there-below, a pair of depending members
non-insulated from and depending from
said body, both adjacent said insulated mem-
ber; one convergingly thereto and one di- 7
vergingly therefrom.
5. A spark plug including a body, an elec-
trode extending axially through and beyond
said body, said electrode being insulated
from said body, an electrode depending from 7
said body, near the margin thereof, and non-
insulated therefrom, said last named elec-
trode extending radially toward said axial
electrode to close adjacency therewith and
terminating in a sharp corner,, and an ex- so
tension of said electrode extending diverg-
ingly from said axial electrode, thereby pro-
ducing a spark gap of gradually increasing
length between said electrodes.
6. A spark. plug including a body, an elec- 85
trode extending axially through and beyond
said body, said electrode being insulated
from said body, a second electrode depend-
ing from said body, near the margin there-
of, and non-insulated therefrom, said second o
electrode extending radially toward said
axial electrode to close adjacency therewith
and terminating in a sharp corner, and an.
integral extension of said second electrode
extending from said electrode at said corner o_
downwardly and divergingly from said axial
electrode, thereby producing a spark gap of
gradually increasing length between said
electrodes, all of said electrodes being lo-
cated in the same plane. CIO
7. A spark plug including a body, an elec-
trode extending axially through an exte-
riorly of said body, said electrode being in-
sulated from said body, a second electrode
depending from said body, near the margin :o s
thereof, and non-insulated therefrom, said
second electrode extending radially toward
said axial electrode, intermediate the length
of the exterior portion thereof, and to close
adjacency therewith, and terminating in a 11o
sharp corner, and an integral extension of'
said second electrode extending from said
electrode at said corner and extending down-
wardly and divergingly from said axial
electrode, thereby producing a spark gap :
of gradually increasing width between said
electrodes, all of said electrodes being 1L-
cated in the same plane.
In testimony whereof I have hereunto set
niy hand in the presence of two subscribing 2
witnesses.
ROBERT D. LOOSE.
In the presence of-
.JOHN FaEELAND,
5T. P. S OWIAn.
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Loose, Robert D. Spark Plug for Internal-Combustion Engines, patent, January 18, 1915; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858322/m1/3/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.