Improvements in or relating to Boat-releasing Gear.
Year: 1890

page_text: Date of Application, 10th June, 1890
Complete Specification Left, 4th Nov., 1890-Accepted, 6th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvements in or relating to Boat-releasing Gear.
I, SEVERIANNO ANTONIO DE CASTILHO of 142 Rye Hill in the City and County
of Newcastle-on-Tyne, Brazilian Naval Officer do hereby declare the nature of this
invention to be as follows :-
This invention refers to improvements in or relating to boat releasing gear and
consists in the use of a pair of bent levers or hooks hinged or mounted on a suitable
On a
bracket or upright fixed by preference at or about the centre of the boat.
second bracket or on a projection or lug of the first I hinge in the ordinary way a
releasing lever formed with a pair of special longitudinal cheeks or flanges thereon
or the equivalent thereof to take by preference a stop friction piece or pulley between
or at either end of the same.
:
When the releasing lever is pulled up the friction pieces thercon or the equiva-
lent thereof as above described which hold the catch levers in position are disengaged
from the bent or catch levers aforesaid which are then free to fall back and thus
simultaneously release the cords or ropes by which the boat is suspended.
From the releasing gear aforesaid, the suspension medium passes to either end
of the boat if necessary and when required through a covered conduit whence it
is led or guided by means of curved eyelets or pulleys fitted on stanchions or
brackets for the purpose to the fall blocks arranged in the usual way.
The arrangement is thus in its action mechanically simultaneous and of very simple
construction.
Ordinarily the gear is locked in position by a locking pin which is released when
COMPLETE SPECIFICATION.
Improvements in or relating to Boat-releasing Gear.
I, SEVERIANNO ANTONIO DE CASTILHO of 142 Rye Hill in the City and County
of Newcastle-on-Tyne, Brazilian Naval Officer 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 refers to improvements in or relating to boat releasing gear and
consists in the use of a pair of bent levers or hooks hinged or mounted on a suitable
bracket or upright fixed by preference at or about the centre of the boat. On a
second bracket or on a projection or lug of the first I hinge in the ordinary way a
releasing lever formed with a pair of special longitudinal cheeks or flanges thereon or
the equivalent thereof to take by preference a stop friction piece or pulley between
or at either end of the same.
When the releasing lever is pulled up the friction pieces thereon or the equivalent
thereof as above described which hold the catch levers in position are disengaged
from the bent or catch levers aforesaid which are then free to fall back and thus
simultaneously release the cords or ropes by which the boat is suspended.
From the releasing gear aforesaid the suspension medium passes to either end
of the boat if necessary and when required through a covered conduit whence it
is led or guided by means of curved eyelets or pulleys fitted on stanchions or
brackets for the purpose to the fall blocks arranged in the usual way.

page_text: The arrangement is thus in its action mechanically simultaneous and of very
simple construction.
Ordinarily the gear is locked in position by a locking pin which is released when
required.
I will now
fully describe my, invention with reference to the accompanying drawings
in which Fig. 1 shows a side or fore and aft view. Fig. 2 an end view and Fig. 3 a
plan of my apparatus, and throughout this description like marks of reference in the
Specification and in the drawings indicate like parts.
Referring to the Figs. aa are the bont levers or hooks hinged or mounted on the
bracket a which may be fixed at or about the centre of the boat. On the lugs a
of the bracket I hinge the releasing lever a³ formed with a pair of special longi-
tudinal cheeks or flanges a thereon between the extremities of which the friction
stops or pulleys a³ are mounted. The action of the apparatus is as follows:-
The boat is slung by reeving the pendants s attached to the fall blocks firstly
through ordinary rings or eyebolts or under pulleys secured in any convenient
manner at either end of the boat and then hooking the eyes on the pendant ends
over the bent levers a. The releasing lever a³ is then pulled over from for example
the position shown in dotted lines in Fig. 2 to the position shown in full lines in the
Figs. when the friction stops as are caused to catch the upper ends of the levers a
and thus hold them in the position shown in the Figs. The lever a³ may be then
locked in position by 'for example the locking pin aⓇ.
To release the boat thus suspended after having withdrawn the locking pin, but
one action is necessary, viz., pull up the releasing lever by means of its handle when
the pull of the pendants s acting on the levers a instantly pulls them back over
and releases the pendants which are then free to slip through or past the rings
or pulleys situated at the stem and stern of the boat. Absolute simultaneity of
release is thus ensured. :
Instead of the roller stops as as above described fixed stops might be used and
instead of the double cheeks at a single cheek witli a stop at either end of same to
engage the levers a might be employed but I prefer the arrangement first above
described. The bracket a² and levers a may either be arranged in the bottom of
the boat or at or about seat level and in any case it is preferable to cover in the
pendants between the, releasing mechanism and the ends of the boat with a light box
frame or casing.
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. In boat releasing gear, the use of a lever fitted with stops, friction pieces or
rollers on the flanges or cheeks thereof, the said lever being centred so that the
lifting or depressing of the same may simultaneously, release or engage a pair of bent
levers or hooks suitably centred in brackets substantially as and for the purposes
hereinbefore described and illustrated in the accompanying drawings
1.3
717
2. The general arrangement or combination of parts constituting the 'improved
boat-releasing gear substantially as herein set forth."
Dated this 31st day of October 1890.
A. CRAWHALL CHAPMAN,.
3, St. Nicholas' Buildings, Newcastle-on-Tyne, Patent Agent for Applicant.