Keel. Page: 2 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE.
JOHN GROTHGAR AND JOHN 3M. GARFIELD, OF GALVESTON, TEXAS.
KEEL.
SPECIFICATION forming part of Letters Patent No. 468,339, dated February 9, 1892.
Application filed March4, 1891, Serial No, 383,666. (No model,).To all whkon it 7)nay cod cebn:
Be it known that we, JOHN GROTHGAR and
JOHN M. GARFIELD, citizens of the United
States, residing at Galveston, in the county of
5 Galveston and State of Texas, have invented
certain new and useful Improvements in
Keels; and we do declare the following to be
a full, clear, and exact description of the in-
vention, such as will enable others skilled in
io the art to which it appertains to make and use
the same.
Our invention has relation to improvements
in the construction of vessels; and it has for
its object, among other things, to provide a
15 construction of vessel embodying a peculiar
keel, through the medium of which the dis-
tance between the keel and covering-boards is
equalized throughout the length of the ves-
sel and a vessel of exceptional strength and
20 advantageous construction is afforded.
The improvements will be fully understood
from the following description and claims,
when taken in connection with the accompa-
nying drawings, in which-
25 Figure 1 is an inverted plan view of our im-
proved vessel; and Fig. 2 is a vertical cross-
section of the same, taken about amidship.
Referring by letter of designation to the
said drawings, A indicates the frame of our
30 improved vessel, and B indicates the plank-
ing, while C indicates the covering-boards, all
of which may be of any ordinary or approved
construction and material.
D indicates the longitudinal center strip of
35 our improved keel, which may be of any ap-
proved width and thickness and extends the
full length of the vessel, being connected to
the vessel-frame in any approved manner.
This center strip D is reduced in width for a
40 portion of its length at its middle, as indicated
by a, and the edges of this reduced portion
are curved slightly outward, as illustrated in
Fig. 1. At the respective ends b of the reduced
portion c and at the points indicated by c, d,
45 e, and f the center strip is stepped laterally or
outwardly, for a purpose presently to be ex-
plained, and the edges of the strip between
the several steps are curved slightly, as illus-
trated, and taper generally toward its respect-
50 ive ends, where tapered portions g are formed.
h, i, j, 7, 1, and m. indicate the respective
auxiliary curved strips, which serve, in con-junction with the longitudinal center strip D,
to form my improved keel. The curved aux-
iliary strips are set side by side on edge, as 55
better illustrated in Fig. 2 of the drawings,
and are attached to the edges of the longitudi-
nal center strip D and to each other by any
ordinary or approved means, their arrange-
ment being as follows: The short strips h oc- 60
cupy the space between the steps or shoulders
b, the strips i the space between the steps c,
the strips j the space between the steps d, the
strips k the space between the steps e, the
strips 1 the space between the steps f, and 65
the strips m, which form the outer edge of the
keel, are attached to the tapering edges of the
pointed portions g. By this arrangement and
attachment of the auxiliary strips to the lon-
gitudinal center strip and to each other it will 70
be seen that a sectional keel is provided in
which all the joints are broken, whereby ex-
ceptional strength and durability is afforded.
It will further be seen that by our improve-
ments a vessel is enabled to carry more cargo 75
to its tonnage than when an ordinary keel is
used, for it will be seen that our improved keel
decreases the draft of the vessel. Further-
more, by the employment of our improved keel
it will be seen that a saving of labor and ma- 8o
terial is effected by reason of the distance be-
tween the keel and covering-boards being
equalized throughout the length of the vessel,
for by this means it will be seen that straight
timber may be employed for planking the ves- 85
sel and it is simply necessary to set theplanks
parallel to each other.
Although we have minutely described our
improved keel, it is obvious that in practice
such changes in the construction and ar- 90
rangement of the parts may be made as fairly
fall within the scope of our invention.
Although we have illustrated our improve-
ments as forming a flat keel, yet it is obvious
that in practice the longitudinal center strip 95
and the auxiliary strips might be so formed
and connected as to constitute a keel having
more or less dead-rise, as the latter form of
keel is generally preferable.
Having described our invention, what we Ioo
claim, and desire to secure by Letters Pat-
ent, is-
1. An improved keel for vessels, compris-
ing a longitudinal center strip having its edges
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Grothgar, John & Garfield, John M. Keel., patent, February 2, 1892; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth172933/m1/2/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.