Tire-Core. Page: 3 of 4
[2], 2 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE.
WALTER S. GILLETTE, OF BAY CITY, TEXAS.
TIRE-CORE.Specification of Letters Patent. Patented Dec. 21, 1920.
Application filed August 23, 1920. Serial No. 405,283.-To all whom it may concern:
Be it known that I, WALTER S. GILLETTE,
a citizen of the United States, residing at
Bay City, in the county of Matagorda and
5 State of Texas, have invented new and use-
ful Improvements in Tire-Cores, of which
the following is a specification.
My present invention has reference to a
core on which tires are built.
10 The primary object is the production of
a core for this purpose which is of a col-
lapsible or knock-down nature whereby the
same may be readily removed from the tire
after the latter has been molded thereon,
15 thus obviating the necessity of pulling the
same and damaging the molded tire in its
removal from the core.
A still further object is the production
of a sectional knock-down core for tire
20 building in which interengaging means is
provided between certain of the sections
thereof, and adjustable means between the
remaining sections, said adjustable means
not being designed to expand or contract
25 the core so that the same may be used on
different sized tires, but only to permit of
such contraction and expansion as to prop-
erly adjust the core to the size of the tire
for which the core is provided, and for per-
30 mitting the ready breaking down of the
core sections when the same are removed
from the molded tire.
It is a still further object to produce a
break-down tire building core in which the
35 joint between the end sections thereof is
covered by a smooth slidable shell after the
proper adjustment between said sections has
been made and which shell produces a
smooth covering between the said end sec-
40 tions.
The foregoing, and other objects which
will appear as the nature of the invention
is better understood, may be accomplished
by a construction, combination and opera-
45 tive arrangement of parts, such as is dis-
closed by the drawings.
In the drawings:-
Figure 1 is a view of a tire building core
constructed in accordance with this inven-
50 tion.
Fig. 2 is a similar view but showing the
parts separated as when the core is broken
down.
Fig. 3 is an end view of one of the core
55 sections.Fig. 4 is a similar view of the coacting
core section.
Fig. 5 is an end view of one of the end
core sections.
Fig. 6 is a similar view of the second end 60
core section.
Fig. 7 is a sectional view approximately
on the line 7-7 of Fig. 6.
Fig. 8 is a fragmentary sectional view be-
tween the end sections showing the arrange- 65
ment of the joint covering sleeve thereon,
after the sections have been adjusted.
Fig. 9 is an end view of a modified form
of the core sections.
My improved tire building core comprises 70
any desired number of segmental sections,
three being illustrated by the drawings.
For distinction, I will refer to one of the
sections as the inner section, and have des-
ignated the same by the numeral 1, and the 75
remaining sections as the end sections, which
are designated by the numerals 2 and 3 re-
spectively. The confronting ends of the in-
ner section 1 and the end sections 2 and 3
are provided with interengaging means. 80
The end of the section 2 is formed centrally
with an extending lug 4 and has its inner
edge centrally provided with a depression
or socket 5. The end of the inner section
1, which, confronting the end of the sec- 85
tion 2 has a central socket 6 to receive the
lug 4 and a rectangular projection in the
nature of a tongue 7 that is received in the
slot 5. The opposite end of the inner sec-
tion 1 has its inner edge provided with a 90
rectangular slot 8 and with a central pro-
jecting lug 9. The confronting edge of the
end section 3 has a socket 10 to receive the
lug 9 and a rectangular tongue 11 to be re-
ceived in the slot 8. 95
Threadedly received in an opening 12 in
the outer end of the section 3 is a bolt 13.
The bolt is non-headed, but is provided, ad-
jacent its outer end with radially disposed
apertures 14. 100
The end of the section 2 which confronts
the end of the section 3 is preferably, but
not necessarily,- beveled from its opposite
sides to its center. When the sections are
assembled, a suitable instrument is passed 105
through the apertures, 14, in the bolt 12, to
adjust the core with respect to the tire that
is to be molded thereon. Before such ad-
justment is made, however, a shell 15 con-
structed of thin material and corresponding 1101,363,109.
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Gillette, Walter S. Tire-Core., patent, December 21, 1920; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1257674/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.