Improvements in the Construction of the Metallic Blades of Oars, Sculls, or Sweeps.
Year: 1887

page_text: Date of Application, 11th Jan., 1887.
Complete Left, 30th Aug., 1887.
Complete Accepted, 30th Sept., 1887.
DI POLTTOAIION.
Improvements in the Construction of the Metallic Blades of Oars,
Sculls, or Sweeps.
I GEORGE WILLIAM GREEN of 26 Hunters Lane Handsworth in the county of
Stafford, Mechanic do hereby declare the nature of this invention to be as follows:
This invention relates to improvements in the construction of the metallic blades of
oars, sculls, or sweeps, and has for its object, the better forming and application of
their parts, more particularly the ribs, or ribbed surfaces in order to give increased
strength and rigidity.
I make the blades of such articles as are known as oars, sculls, or sweeps, and which
hereinafter I shall call oars, preferrably of steel, but they may be made of any other
suitable metal.
These blades are prepared to receive the handle or loom, which is made of wood.
These blades are formed having dual concave surfaces in front, a convex surface upon
their back, and also having formed lengthwise down their centre, and between these
two surfaces a socket or groove into which the handle is passed.
In forming these blades I may proceed as follows:-I cut out a sheet metal blank,
suitable in shape and size to form the back of the blade, which is pressed, hammered,
stamped, or otherwise brought into its required curved form. In addition to its general
form I make down its centre a groove which is formed by throwing up the metal on
the concave side, into a hollow rib. This rib (or groove) would then form about
three fourths of the section of the socket to receive the handle, when its (socket)
completion would be formed by soldering a cover plate thereto, along its length, which
harmonizes with, and makes up the convex surface of the back of the oar. The front
of the blade would be formed by cutting out a suitable blank, and bringing it into the
required shape by pressing, stamping or otherwise.
The front of the oar is made a little smaller than the back, so that along the edges
of the latter a narrow strip is turned up, when the front is made to lie therein, the
said edges being then turned over on to the front and soldered.
The rib (or now formed socket) would bed up against the inside of the front.

page_text: In some cases I should prefer to make the socket thus:-I form the front as before
stated I form further the back similarly as before except that it is in one piece, with
an unbroken surface.
I then form the socket of a separate piece formed into a hollow rib shape, the sectional
form of which together with the portion of the back, to which it is soldered, forms the
socket to receive the handle. The said socket rib is first soldered to the back, then
the front placed on the rib and inside the turned up edges of the back, when the said
edges are turned down and soldered as before described.
I further strengthen the ends of the blade, and particularly at the corners by
inserting within and between such plates forming the blade, extra plates, which may
be ribbed or corrugated as desired, so that such parts are thereby greatly increased in
strength.
Where necessary and practicable I may corrugate or rib any of the plates used in
the construction of these my metallic oar blades in order to make them more strong
and rigid.
Instead of the edges of the back being turned over on to the front, I may make
them with flush soldered or rivetted joints."
D
11->
T
1000

page_text: Improvements in the Construction of the Metallic Blades of Oars,
Sculls, or Sweeps.
I GEORGE WILLIAM GREEN, of 26 Hunters Lane, Handsworth, in the county of
Stafford Mechanic, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
This invention relates to improvements in the construction of the metallic blades of
oars, sculls, and sweeps, and has for its object the better forming and application of
their parts, particularly the central rib which partly forms the socket to receive the
handle, and also in some cases the ribbing of any or each of the surfaces of such parts,
in order to give increased strength & rigidity.
I make the blades of such articles that are known as oars, sculls or sweeps, and
which hereinafter I shall call oars, preferably of steel, but they may be made of any
other suitable metal.
These blades are prepared to receive the handle or loom which is made of wood;
they are further formed having dual concave surfaces in front, a convex surface upon
their back, and also having formed lengthwise down their centre and between these
two surfaces a socket or groove into which the handle is passed.
In order to more clearly describe how these my improvements may be carried out
I have appended hereunto an illustrative sheet of drawings upon which are letters of
reference and figures, and upon which like letters refer throughout the several views
to the same thing or part.
Fig. 1 is a side illustration of a metallic blade constructed according to these my
improvements.
Fig. 2 is a front elevation of Fig. 1.
Fig. 3 is a sectional elevation of Fig. 2 upon line A-B.
Fig. 4 is a sectional view of the component parts before such parts are secured to
each other.
Fig. 5, is a sectional view of the blade (upon line C-D. of Fig. 2) after it has been
completed.
In forming these blades I may proceed as follows:-I cut out a sheet metal blank
suitable in shape and size to form the back a of the blade, which is pressed, hammered,
stamped or otherwise brought into its required curved form. In addition to its
general form I make down its centre a groove or rib b, which is formed by throwing
up the metal on the concave side as shown. This rib or groove b would thus form
about threefourths of the section of the socket to receive the handle c, see particularly
Fig. 3.
In order to complete the section of the socket I provide the strip d, which is made
having a corresponding curved form to that of the back a, and of a suitable width to
lie in the top of the groove b. In Fig. 4 I have shewn this piece d ready to be placed
in position and then soldered.

page_text: -
In Fig. 5 the socket is shewn completed by reason of the said piece d being soldered
in its place, the soldered joint at e, being smoothed, so that the surfaces of the piece d,
and the back a, together with the joints shall form one continuous regular line.
In constructing these my oar blades I find it an advantage previous to soldering
their parts together to insert within and between the plates a &f, which form
respectively the back and front of the blade, extra plates, for the purpose of adding
strength thereto, about the corners g, at the end of the blade. These extra plates may
be ribbed or corrugated as desired, before being soldered in their places, so that such
plates would thereby be made much stronger.
Again, In some cases I may rib or corrugate the front plate with small ribs or
grooves, either lengthwise of such plate or crosswise or diagonally, as such ribbing of.
the plate would not only strengthen it, but would also lessen the liability of such plate
to crinkleor "pucker," when being stamped.
Around and along the edges of the plate a, the metal may be turned up as seen in
Fig. 4, so that the front plate flies therein; then the said edges are turned down on
to the plate, and soldered all round, thus uniting the plates a & f together and
completing the blade as seen in Fig. 5.
The handle c, would be made to pass as far into the hollow rib or socket bas
practicable, the farther the better, and for ordinary use this would be sufficient uniting
or gripping power to hold the blade on, but I may also if desired further secure the
blade to the handle by screws or cement &c.
Suitable handles would be attached to these blades of any desired shape or
material.
Having now particularly described and ascertained the nature of this my said
invention and in what manner the same is to be performed I declare that what I
claim is
1st. The improvements in the construction of oars, sculls or sweeps as herein
described and illustrated upon the drawings, that is to say,-The forming of the
channel or rib, which shall serve as a part of the socket to receive the handle, in, and
of, the same piece of metal which forms the back of the blade.
2nd. The forming of corrugations or ribs upon any or each of the metallic parts of
which the blade is constructed, for the purpose of giving strength to such part or
parts, substantially as set forth.
Dated this 26th day of August 1887.
GEORGE WILLIAM GREEN.