Oil Press Mat. Page: 3 of 3
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301,747
to the required form by the die. A composite
mat made as described is also lighter than one
made wholly of vulcanized fiber or of paper
and a metal face, which is a desideratum. The
5 ends of the tar-board sheets or strips and the
vulcanized-fiber facing, after being shaped and
pressed by the die, as stated, are united se-
curely by rivets 4. The tar-board or paper
back renders the mat very durable, in that it
no prevents the solid - fiber facing - sheet from
stretching.
A mat thus made is light, elastic, tough, and
unchangeable in shape after being formed by
the die. It possesses the desirable qualities
15 of the vulcanized fiber without the great ex-
pense thereof incident to constructing it en-
tirely of such fiber, and it is superior to a pa-
per leaf faced with a metal plate, in that the
metal rapidly transmits heat to the paper and
20 causes the latter to peel, separate, or be de-
tached from the metal face-plate.
The mat may comprise any desired number
of leaves, and where two are used they are
connected by a simple leather-strap hinge-con-
25 nection, 5, which also constitutes a handle by
which to handle the mat; but where three
leaves are used, as in Fig. 3, it is desirable to
have a hinge that will permit the leaves to
approach each other in parallel lines. This
30 is effected in a very desirable manner by dn-plex hinges, each composed of four plates, the
plates 6 being jointed together at one edge, as
at 7, and connected at this point to a leather
loop, 8, and at the other edges jointed sepa-
rately to plates 9, which are secured, respect- 35
ively, to the three leaves.
Having fully described my invention, what I
claim is-
1. An oil-press mat the leaves of which are
each composed of a back of paper material 40
and a facing of vulcanized fiber pressed to-
gether and united in a compact body, substan-
tially as described.
2. An oil-press mat consisting of a back of
sheets or strips of tar-board and a facing of 45
vulcanized fiber pressed and united together,
substantially as described.
3. The combination of the three leaves, each
composed of a back of paper material and a
facing of vulcanized fiber pressed and united 50
together, and the duplex hinges, each com-
posed of the four jointed plates, substantially
as shown and described.
In testimony whereof I have affixed my sig-
nature in presence of two witnesses.
ADELBERT E. OSBORN.
Witnesses:
J. C. JENKINS,
E. A. McKENNEY.
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Osborn, Adelbert E. Oil Press Mat., patent, July 8, 1884; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth170785/m1/3/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.