Improvements in the Holding and Detaching Gear for Ships' Boats.
Year: 1894

page_text: Date of Application, 24th Apr., 1894
Complete Specification Left, 23rd Feb., 1895-Accepted, 20th Apr., 1895
PROVISIONAL SPECIFICATION.
.
Improvements in the Holding and Detaching Gear for Ships' Boats.
I, CUTHBERT GARDNER, of Roseberry House, Redcar, in the County of York,
retired Innkeeper, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the holding and detaching gear of ships' boats by
which they are secured to and released from the lowering tackle of the ships'
davits.
The object of this invention is to construct and arrange simple and reliable
mechanism to be employed for this purpose by which the boat can only be released
from the lowering tackle simultaneously at both ends and after the boat has
reached the water.
In carrying this invention into effect I provide towards each end of the boat a
bar or rod of iron secured to the boat's bottom and extending vertically therefrom
through the deck or thwart and terminating at the upper part in a double eye, the
gap of which receives the link or shackle of the lowering tackle so that by inserting
the draw bar through the double eye with the link or shackle in the gap the boat
is secured to the lowering tackle. The draw bars are connected to bell crank
levers coupled together by a coupling rod so that a hand lever provided on one
bell crank lever operates both and thus actuates the draw bars simultaneously and
in the manner required for the purposes of my invention.
Dated this 23rd day of April 1894
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees,
Agent for the Applicant.
improvements in the orig аци
I, CUTHBERT GARDNER, of Roseberry House, Redcar, in the County of York,
retired Innkeeper, 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 the holding and detaching gear of ships' boats by
which they are secured to and released from the lowering tackle of the ships'
davits.
The several conditions essential to a detaching gear for ships' boats which shall
be reliable and serviceable in all states of the weather and which cannot be injured
by violence or neglect or rendered useless under the circumstances in which ships'
boats are liable to be used, may be enumerated as follows; viz. :-
That both ends of the boat be released from the lowering tackle simultaneously.
That such release of the boat from the tackle can only be effected when the boat
is water-borne and intentionally by the man in charge of the releasing gear as
distinguished from being detached automatically whether due to the construction of
the detaching gear or to the swell of the sea tilting one end of the boat.

page_text: That the draw bars or operating mechanism are clear of the bottom of the boat
so as not to be rendered unworkable by the accumulation of rust, dirt or by being
enveloped in ice.
That the draw bars and their operating mechanism do not occupy the open
spaces between the thwarts of the boat where they would be exposed to injury by
men throwing oars or heavy articles into the boat or by jumping in themselves and
that the detaching gear mechanism does not take up the area of the seats and so
reduce the carrying capacity of the boat or prevent some of the occupants from
sitting down.
That the movement of the draw bars in shooting the links or shackles of the
lowering tackle be effected by a tensile strain, and not a compressive one, and
lastly the general arrangement and mode of operating the mechanism be of the
simplest possible description.
The object of my invention is to provide a detaching gear which will by means
of its construction and combination of parts fulfill these several conditions and the
annexed sheets of drawings are intended to represent such detaching gear placed in
position within a boat together with its several parts and the mode of operating
them.
Figure 1 is a sectional view of a boat taken longitudinally, and Figure 2 is a
corresponding view in plan the said boat being furnished with my improved
detaching gear, which is shown in the holding position in both figures.
Figure 3 illustrates to an enlarged scale the detaching gear complete in all its
parts and
Figures 4 and 5 are sectional views taken on lines x x and y y respectively of
Figure 3.
From these several figures it will be seen that in carrying this invention into
effect provide towards each end of the boat a bar or rod of iron a secured to the
boat's bottom or keel and extending vertically therefrom through or up to the
deck or thwart at b and terminating at its upper part in a double eye c the gap of
which receives the link or shackle of the lowering tackle so that by inserting the
draw bar d through the double eye with the link or shackle in the gap the boat is
secured to the lowering tackle. The draw bars d are placed lengthwise under the
thwarts, that is transversely to the length or centre line of the boat and are con-
nected each to its bell crank lever e which bell crank levers are coupled together
by a coupling rod / so that a hand lever or wheel ġ provided on one bell crank
lever operates both and thus actuates the draw bars à simultaneously and in the
manner required for the purposes of my invention. That is to say, that the said
draw bars do not act automatically when relieved of the weight of boat, but must
be intentionally withdrawn by the man operating the lever or wheel which
withdrawal is effected by applying a tensile strain in the direction of the arrows
both to the draw bars themselves and to their coupling rod fas distinguished from
a compressive strain or thrust for the safe transmission of which a special section
of bar should be provided to prevent the tendency of a bar of considerable length
relatively to its sectional area from bending and so failing to effect its purpose or
a number of eyes must be provided all in line for the bar in compression to pass
through.
9,
It will furthermore be observed that the several parts of the detaching gear
mechanism are placed at the level of the thwarts, that is clear of rust, dirt or ice
accumulating at the boats bottom, and are also out of the way so as not to extend
across the open spaces of the boat between the thwarts, or to take up the sitting
accomodation of the thwarts, and furthermore that inasmuch as the movement of
the draw bars is transversely to the length of the boat any tilting of the boat when
waterborne such as by the swell of the sea lifting one end would have no tendency
to automatically or accidentally release the boat against the intention of the mau
in charge of the controlling wheel or lever g. A stop pin h fixed to and extending
downwards from the thwart or fixed part of the boat's deck arrests the movements
of the levers or wheels in the manner required to prevent the draw bars from being

page_text: wholly withdrawn from the double eye whilst a stop piece ¹ and lock pin h³ are
similarly provided in the requisite position to prevent the lever or wheel g from
moving far enough in the other direction to insert the draw bars through the
double eyes an unnecessary distance, the insertion of the locking pin being
intended to effectually lock the wheel or lever and therefore the whole of the
detaching gear in the inserted position until intentionally withdrawn by the man in
charge.
Having thus fully described my said invention and the manner in which it is to
be carried into effect, I wish it to be understood that I am aware that the method
or principle of releasing ships' boats at both ends simultaneously by draw bars
operated by suitable leverage is not new as draw bars extending longitudinally
along the boat and so operated have been described in the Specifications of various
Letters Patent prior to the date of the application for Letters Patent for this my
said invention, I therefore make no claim to such method or principle, otherwise
than as embodied in and carried into practice for effecting the several purposes as
hereinbefore specified, but what I claim is :-
Firstly. In the use and construction of holding and detaching gear for ships'
boats, the arrangement and combination of parts consisting of draw bars extending
crosswise of the boat coupled together and operated simultaneously, substantially
as and for the purposes as hereinbefore described with reference to the
accompanying drawings.
Secondly. The general arrangement and combination of parts constituting the
holding and detaching gear for ships' boats, substantially as hereinbefore described
and illustrated.
1
f Feb1005
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees,
Agent for the Applicant.
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees,
Agent for the Applicant.