Improvements in Rowlocks.
Year: 1888

page_text: Dite of Application, 30th May, 1888
Complete Specification Left, 26th Feb., 1889-Accepted, 29th June, 1889
PROVISIONAL SPECIFICATION.
Improvements in Rowlocks.
JOSEPH GRISENTHWAITE of Bowness on Windermere "Blacksmith" do hereby
declare the nature of this invention to be as follows:-
My invention consists of a means whereby the ordinary feather oars, and pin oars
can be used upon the same offset or fixed arm, at two given distances from the
seat of the boat. The offset is of the usual kind as far as its parts for fixing to the
boat aro concerned; but the parts upon which the oars work are made in this
manner :- -A horizontal bar or piece of iron or other metal, (usually made) about six
or seven inches long is mado to swivel or revolve upon the fixed offset on a centre
pivot. At each end of the horizontal bar there are vertical pins, one is made so that
the ordinary rowlock used for feather oars will swivel upon it and the other for pin
oars. By this means the pin for the rowlock can be nearest to or furthest away
from the seat as desired, and the same way with the pin for the pin oar.
horizontal bar is made so that it is prevented from revolving when not desired to do
so by means of what I call a double lock spring; one end of the spring is socured
to the fixed offset and at the other end there are two small pins or studs one going
into a hole in the fixed offset, and the other pin into a hole in the horizontal bar,
thus preventing it revolving. To change the position of the pins on which the oars
work, the spring will have to be pressed down so that the small pin or stud is clear
of the horizontal bar and thus allowing it to revolve.
.
Dated this 29th day of May 1888.
The
COMPLETE SPECIFICATION.
Improvements in Rowlocks.
JOSEPH GRISENTHWAITE Bowness Windermere "Blacksmith" 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 consists of a means whereby the ordinary feather oars and pin oars
can be used upon the same offset or fixed arm A at more than one distance from the
seat of the boat.
The offset or fixed arm A is of the usual kind as far as its parts for fixing to the
boat are concerned, but the parts upon which the oars work are constructed in the
following manner :-A horizontal bar or piece of iron B or other metal (usually
made) about six or seven inches long is made to swivel or revolve on the fixed
offset A upon a centre pivot C; at each end of the horizontal bar B there are vertical
pins E, one is made so that the ordinary rowlock D used for feather oars will
Swivel upon it, and the other for the pin oars to be used upon; by this means the
pin E for the rowlock can be nearest to or furthest from the seat as desired and the
same way with the pin E for the pin oar. The horizontal bar B is made so that it
prevented from revolving when not desired to do so by means of what I call a
"double lock spring" Fone end of the spring is securely fixed to the offset or fixed arm, A.
at the other end there are two small pins or studs G, one projecting downwards and
going into a hole in the fixed arm A, thus preventing the spring revolving, and the
other pin projecting upwards and going into a hole in the horizontal bar B, thus
preventing the horizontal bar B revolving. The "double lock spring" F is made
wide enough to admit of the centre pivot C (on which the horizontal bar B revolves)
passing through the centre of it. To change the position of the pins E and E on

page_text: which the oars work the spring F will have to be pressed down so that the small
pin or stud G is clear of the horizontal bar B and thus allowing it to revolve.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what I
claim is :-
1. The application of the pin E for pin oars and the pin E on which is fixed the
swivel rowlock D for feather oars upon the same offset or fixed arm A; either of
which can be used at more than one distance from the seat of the boat.
2. The "double lock spring G for preventing the horizontal bar B on which oar
pins E and E are fixed from revolving.
Dated this Twenty fifth day of February 1889.
JOSEPH GRISENTHWAITE.