Improvements in Apparatus for Lowering, Raising, and Detaching Ships' Boats.
Year: 1889

page_text: Date of Application, 20th July, 1889
Complete Specification Left, 17th Apr., 1890-Accepted; 14th June, 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Lowering, Raising, and Detaching
Ships' Boats.
I, GEORGE MORGAN Ships Captain residing at Woodview Stonehaven, Kincardine-
shire do hereby declare the nature of this invention to be as follows:-
:-
This improvement consists in attaching to the socket in which the davit is placed
or any other suitable position a small winch actuated on one side by a worin and
worm wheel driven by hand or power having on the other side of the barrel a drag
strap working on a recessed sheave. The drag strap being tightened or released by a
screwed spindle operated by band. On to this barrel a rope preferably of wire is
wound. This rope passes over the end of the davit which is provided with a wheel or
through a block suspended from the same and is attached to the boat in the manner
to be afterwards described.
Each davit is provided with a winch and these are connected by an iron shaft so as
to make the action uniform.
Either winch can be operated on or both can be worked at the same time.
The before mentioned ropes which pass over the end of the davit are provided with
a short piece of chain having large oblong links, these links pass through the forward
and after thwarts and are placed between a block fastened to the keel, through this
block works a rod running the whole length of the boat having at a convenient place
a weighted lever which keeps the rod in its place or when it is necessary to unhook
the boat the lever is raised thus withdrawing the bolt or rod from both blocks
simultaneously. By reversing the lever the rod is withdrawn from the blocks when
the boat is water borne.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Lowering, Raising, and Detaching
Ships' Boats.
I, GEORGE MORGAN Ships Captain, residing at Woodview Stonehaven, Kincardine-
shire Scotland, 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 Improvement consists in attaching to the socket or standard in which the
boats davit is placed or in any other suitable position, a small winch actuated on one
side by a worm and worm wheel driven by hand or power, having on the other side
of the barrel a drag strap working on a recessed sheave. The drag strap being
tightened or released by a screwed spindle operated by hand. On this barrel a rope
preferably of wire is wound. This rope passes over the end of the davit which is
provided with a wheel or through a block suspended from the same. This rope is
attached to the boat in the manner to be afterwards described.
Each davit is provided with a winch and these are connected by an iron shaft so as
to make the lowering or raising action uniform. Either winch can be operated on
independently or both can be worked at the same time.
The before mentionened ropes which pass over the ends of the davits are provided
with large oblong links and with or without a short piece of chain. These links pass
through the forward and after thwarts and are placed in a block fastened to the keel
having two holes. Through these holes a rod the whole length of the boat passes, at
Data

page_text: a convenient point on this rod a weighted lover is attached which keeps the rod
engaged with the links.
When it is necessary to unhook the boat the lever is raised thus withdrawing the
bolt or rod from both blocks simultaneously so allowing the link to be withdrawn.
By reversing the lever the rod is automatically withdrawn from the blocks the
moment the boat is water borne.
This apparatus is operated in the manner following.
On turning the handle A which is attached to the spindle B carrying a screw
worm, the worm wheel attached to the barrel D is revolved and so winds on the
rope, thus raising the boat. The spindle B is prolonged both in front and behind the
worm and slides out and in to gear with the worm wheel C.
The bearings of the worm spindle being sufficiently distant from each other to
allow of this action. By this means the barrel D can be released by withdrawing
the worm and so allowing the boat to be lowered by the drag. The drag strap E
which works in a recessed sheave on the barrel D is operated by the band wheel F.
Both winches are keyed on the shaft J, so that the rope is coiled and uncoiled to the
same degree and the boat remains on an even keel.
If necessary the boat can be lowered by putting the worm wheel in gear and
reversing the handles A. A. when the rope uncoils.
The ropes are furnished with an oblong link or if necessary with a short piece of
chain and a link. This link passes through a hole in the thwart H of the boat and is
attached to the rod J which is supported on the keel K.
At one end of the boat this rod passes through the block L which is bolted to the
keel, at the other end the rod passes through the block M and is returned through
it, the returned part attaching to the link. The weighted bell crank lever N. Fig. I
working through the socket O keeps the rod J from slipping out of the block L
and M. When the boat is water borne the lever N. is raised by hand, the rod is
drawn back, the links are released and the boat is then clear.
When the weighted lever N. is reversed as in Fig. II the boat on being water
borne removes the weight from the links, the lever falls and forces the rod out of the
blocks L and M, thus automatically clearing the boat.
Having now particularly described and ascertained the nature of my Inven-
tion and in what manner the same is to be performed I declare that what [
claim is
The Improved method of lowering and raising ships boats and in detaching them
from the davits as has been herein described.
1st. The lowering and raising by an Improved winch.
2nd. The detaching of the boat by the arrangement of a weighted lever.