Improvements in ROWLOOKS TO DUAL.
Year: 1893

page_text: Date of Application, 21st Dec., 1893
omplete Specification Left, 9th Mar., 1894-Accepted, 12th May, 1894
Improvements in ROWLOOKS TO DUAL.
I EDWARD CHARLES MARTIN of No. 5 Pottery Street Ipswich in the County
of Suffolk, Manager of Works do hereby declare the nature of this invention to
be as follows :—
My invention relates to an improved construction of rowlocks for boats, and it
consists in adapting the rowlock, to be locked in position when in use, and locked
under the gunwale when not in use, the object being rigidity in use and
convenience in stowage. In carrying my invention into practice I use a rowlock
of the usual shape, enlarged at the neck. A pin, having a link or shackle at its
upper end, passes through a hole in the base of the crutch and large part of the
neck of the rowlock. A wire connects this pin, with a bolt working in a hole, at
the lower end of shank of crutch, at the base of the bolt a spring is inserted to
force the bolt out and thus lock the rowlock in either position for use or stowage.
Dated this the 21st day of December 1893.
COMPLETE SPECIFICATION.
Improvements in Rowlocks for Boats.
I EDWARD CHARLES MARTIN of 5, Pottery Street, Ipswich in the County of
Suffolk Manager of Works 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 an improved construction of rowlocks for boats. It
consists of a rowlock similar in shape and mounted in a similar manner to that in
general use, but adapted for locking in a position when in actual use and to be
locked under the gunwale when not in use: the objects being rigidity and
durability in use; convenience in stowage, and facilitating the operations of
unshipping and stowing.
In carrying my invention into practice I use a recessed plate fitted to the upper
part of the boat's gunwale, and a boss plate fitted under the gunwale; a hole is
bored to connect the two plates, which admit the shank of the rowlock and allows
it to swivel in the usual manner. The crutch of the rowlock has a large base and
the shank has an enlarged neck to fit the recessed plate; the remainder of the
shank is the same size throughout its length. At the base of the crutch a slotted
hole is formed which continues through the neck. Central with this hole a groove is
formed in the side of the shank, running nearly to the end. Opposite this groove,
but lower down on the shank a hole is bored on an angle to meet the groove;
a spring and a bolt is inserted in the hole and connected by a wire to the pin
which works in the hole at the base of the crutch; this pin has a link or shackle
at its upper end to which a lanyard may be secured, so that by pulling the lanyard
in a direction in a line with the crutch the bolt is drawn back against the spring
and the rowlock is detached from either position in the gunwale.

page_text: In order that my invention may be fully understood I will more particularly
describe it, making index reference to the accompanying drawing, in which
Figure 1. is a view of the inside elevation-looking from the interior of the
boat showing the rowlock in position, and
Figure 2. is a similar view showing the rowlock stowed within the boat.
Figure 3 is a view in transverse section through line a. x, Figure 1., and
Figure 4 is a similar view through line z. z. Figure 2.
Throughout these views the same parts are marked with similar letters of
reference.
The rowlock A is mounted in the plates B and C so as to be free to swivel
therein in the ordinary manner.
The crutch has a large base K having a slotted hole K', the shank has a large
neck through which the hole K¹ continues; central with this hole a groove K¹
is formed in the side of the shank running nearly to the end; on the opposite side
lower down on the shank a hole a is bored on an angle to meet the groove K³;
into this hole a spring M (which may be of any suitable shape but preferably a
flat coil as shown), and a bolt J is inserted; a wire passes through a hole in the
bolt J and is secured thereto by the set screw L, or other suitable means as
shown; the wire is led through the spring and up in the groove K³ and
connected to the pin e; this pin has a link or shackle d at its upper end for
securing a lanyard to. At the end of the shank a slot L' is cut through to the
hole a which allows the set screw L to work freely. The end of the bolt J is
bevelled so that when the rowlock is heing put in either of the positions shown the
bolt is forced back into the hole formed for the purpose and when the end of the
shank is through the gunwale from either direction the bolt is forced out
by the spring and locked in either position. To detach the rowlock from either of
the positions shown the link d is pulled in a direction in a line with the crutch;
the bolt J is thus drawn back within the shank allowing the rowlock to be
unshipped from either position.
I wish it to be particularly understood that I do not limit myself to the precise
details of construction hereinbefore described and shown, and that I hold myself at
liberty to make such changes and alterations as fairly fall within the spirit and
scope of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved method of mounting a boat rowlock substantially as and for
the purpose hereiubefore described and shown.
2. In a boat rowlock the hole K', the groove K³, the hole a, the slot L³, all made
and formed as and for the purpose set forth.
3. The combination of the rowlock A; the pin e having the link d at its upper
end; the spring M and the bolt J connected to the pine by the wire h all combined
arranged and operating as and for the purpose set forth.
Dated this 8th day of March 1894.