Improvements in Oars.
Year: 1895

page_text: Date of Application, 25th Nov., 1895
Complete Specification Left, 25th Aug., 1896-Accepted, 25th Sept., 1896
PROVISIONAL SPECIFICATION.
Improvements in Oars.
I, CHARLES EDWARD HOGG of No. 1 St. Helen's Place, Bishopsgate Street,
London, do hereby declare the nature of this invention to be as follows:-
My invention relates to the propulsion of boats by means of oars formed of two
jointed or hinged and connected parts and with a suitable attachment to the
gunwale of the boat.
According to my invention I construct an apparatus by which an oarsman facing
the bow or stem of a boat and using his arms as in an ordinary rowing boat,
causes the blade or blades of the oar or oars to act in such a manner as to propel
the boat in the direction in which he is facing, the handles of the oars moving in
a direction opposite to that of the blades. For this purpose I divide the oar as at
present constructed or of similar form into two parts and I connect the two parts
by two pivotted and articulated or toothed seginents carried by suitable sockets
or supporting plates, frames or sleeves. I provide a plate or bed which is
attached to the gunwale of the boat on either side by hinges or by hinged bolts
or by other suitable means and on this I secure the articulated parts or toothed
segments or containing or holding parts before-mentioned of the articulated oars.
In this way when the hands of the rower, who is facing the bow, are thrown
forward, the blades of the oars will go forward, and on the rower drawing back
the blades of the oars being in the water, the boat will be propelled forward.
Dated this 22nd day of November 1895.
CHARLES E. HOGG.
I CHARLES EDWARD HOGG of 34 Gresham Street in the City of London
Civil Engineer 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 :-
My invention relates to the propulsion of boats formed by means of oars formed
of two jointed or hinged and connected parts and with suitable attachment to the
gunwale of the boat. According to my invention I construct an apparatus by
which an oarsman facing the bow or stern of a boat, & using his arms as in an
ordinary rowing boat causes the blade or blades of the oar or oars to act in such
a manner as to propel the boat in the direction in which he is facing, the
handles of the oars moving in a direction opposite to that of the blades. For this
purpose I divide the oar as at present constructed or of similar form into two
parts & connect the two parts by two jointed & articulated or toothed segments
carried by suitable sockets or supporting plates or frames.
I provide a plate or bed or saddle, which is attached to the gunwale of the
boat on either side by hinges or by other suitable means & on this I secure the
before mentioned articulated parts or toothed segments or containing or holding
parts of the articulated oars.

page_text: YICW WICH a mouincation in the form of the gunwale pivot &
joint.
Fig. 4, is a plan of the under side of the articulation of the jointed oar.
In Fig. 1, A is the handle end of the oar fixed in the socket B of a piece upon
which is formed a toothed quadrant E. pivoted at C. on a pin held by the
pieces D. D¹ connected together by the pins C. K. & G. firmly fixed in the
piece D' & holding the piece D. by means of nuts as shown.
Working on the pivot G. is a quadrant F, geared to the quadrant E, & forming
part of the piece carrying the socket H, into which is fixed the blade end of the
oar, the stem of which is shown at J. The lower piece D' is pivoted at L, upon
a saddle piece M, fixed by suitable means such as bolts & nuts O, to the gunwale N,
of the boat.
In some cases instead of the single direction pivot shown at L. M, Fig. 2,
I employ the double jointed pivot shown in Fig. 3, in which a pivot P, permitting
of partial rotational movement of the oar as in feathering is employed. In some
cases the piece B. E, is curved as shown by dotted lines in Fig. 3. so that the axis
of the socket B. and handle A, and also of the socket H, and oar J, is approxi-
mately in a line coincident with that of the pivot P, so that the tendancy of the
oar to turn except at the will of the rower is lessened. Instead of the part L, of
the joint or pivot as shown in Fig. 1, being in the position shown it may be in
some cases placed further towards the socket A, as indicated by the dotted lines
at L. The under side of the articulated part of the jointed oar is shown at Fig. 4,
in which the ears of the pivot or joint L, are more clearly illustrated. The dotted
lines Q. Q indicate the relative positions of the two parts of the jointed oar and
of the toothed articulation when the oar is in use.
The pin of the joint L, or the pin P, or both of them may be made so as to be
readily taken out for the purpose of shipping the ours.
Having now described the nature of my said invention, & in what manner the
same is to be performed I declare that I do not confine myself to the precise
proportions of the parts shown in the drawings hereto attached, but what I do
claim as my invention is;
(1.) The jointed or articulated oar substantially as herein described and
shown.
(2.) The jointed or articulated oar double-pivoted upon the gunwell of a boat
substantially as described and shown with reference to Figs. 2, & 3, of the
drawings hereunto attached.
Dated this 25th day of August 1896.
CHARLES E. HOGG.