An Improved Controlled Disengaging Gear for Ships' Boats.
Year: 1894

page_text: Date of Application, 10 h Sept., 1894
Complete Specification Left, 26th Oct., 1894-Accepted, 1st Dec., 1894
PROVISIONAL SPECIFICATION.
An Improved Controlled Disengaging Gear for Ships' Boats.
JAMES MUIR 2 Dingle Lane Liverpool Marine Superintendent, do hereby
declare the nature of this invention to be as follows:-
11
This invention relates to an improved controlled disengaging gear for ships
boats.
-one at each end of the boat-each
The boat is suspended by two hinged hooks,-
hook is kept closed, when engaged, by means of a moveable slotted head with
a rigid tube, or rod connection between the two slotted heads & controlled by means
of a lever, held by a pin, & working in a quadrant at the stern of the boat: on
drawing the pin the lever is released, the weight of the boat causes both hooks to
open simultaneously & frees the boat from the davit falls. The rigid tube, or rod
connection is placed, preferably, in the bottom of the boat & bent up at each end to
join the slotted heads: but might if necessary be carried :-(1) on top of the
thwarts; (2) below the thwarts & on, or near, the centre line of the boat;
or (3) below the thwarts, &, as in the case of life-boats, alongside the air tank casing
on either side of the boat.
A fixed hook is provided on the forged head, on the side opposite to the hinged
hook, & which can be used independently of the hinged hook, for purposes of
lifting, or as a stand by against accident.
1904
COMPLETE SPECIFICATION.
An Improved Controlled Disengaging Gear for Ships' Boats.
JAMES MUIR 2 Dingle Lane Liverpool Marine Superintendent, 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:-
The object of this invention is to provide a reliable, simple, and durable
disengaging gear for ships' boats, which will be simultaneous & positive in action,
and under the complete control of the officer, or man in charge of the boat.
By reference to the annexed drawing and the following description my invention
will be found to be clearly described.
To carry out my invention I suspend the boat by two hinged hooks A. A.-one
near each end of the boat-the two heads B. B. in which the hooks A. A. are
hinged, may be part of the bolts C. C. which pass down through the keel and are
clinched in the usual way below, or may have a palm, or plate base which can be
attached to the boat where required.
The books A. A. are kept closed, when engaged, by means of two moveable
slotted heads D. D. with a rigid tube, or rod connection E. between them, so that
the slightest movement at either of the slotted heads [D. D.] is transmitted directly
to the other by means of the rigid connection E. and simultaneous action is ensured:
the movement of the slotted heads D. D. is controlled by means of a hand lever F.
which is connected to one of the slotted heads [D. D.] by means of a short link G.,
the hand lever F., works in a quadrant H. and is held in the closed position by
means of a locking pin J.

page_text: The fore-and-aft movement of the slotted heads D. D. is guided by means of
small bearings K., and the rigid connection E. moves in the guides L.
The controlling gear is placed, preferably, in the stern of the boat, but it can
also be placed in the bow, or in any position along the rigid connection E. where
found most convenient.
In place of the quadrant H. a socket may be supplied, in which the hand lever F.
will fit, and be held in place, when the gear is closed, by means of a similar locking
pin J.
To disengage the gear, the man in charge of the boat takes the weight off the
locking pin J. by slightly pushing the hand lever F. he then draws the pin J. and
lets go the hand lever F., the weight of the boat at once causes the hooks A. A. to
open simultaneously, and frees the boat from the davit falls.
The rigid connection E. is placed, preferably, in the bottom of the boat, and bent
up, or jointed, at each end to connect it with the slotted heads D. D., it might
however if necessary be carried (1) on top of the thwarts in a straight line,
(2) below the thwarts and on or near the centre line of the boat, or (3) below the
thwarts, and, as in the case of life-boats, alongside the air tank casing on either side
of the boat.
I do not confine myself to placing the gear above the line of the thwarts, as
shown in the annexed drawing, but in the case of boats for war vessels, or other
boats, where a clear space is required, for guns or other purposes, I would place the
whole of the gear below the line of the thwarts, and lead the hand lever F. into a
convenient position.
As there is no necessity for using the controlled gear for lifting boats out of the
water, I provide fixed hooks M. M. welded on to the back of the heads B. B., and
which can be used for purposes of lifting, or as a stand-by against accident.
In order to keep the gear compact and the several parts in their relative positions,
I make use of a thin plate N. of iron, brass, or other material, through the centre
of which the bolt C. passes, and on to which the bearings K. are fixed, also
the pin O. on which the hand lever F. works: if need be this plate [N.] can be
carried out so that the quadrant H. may also be fixed on to it.
At the other end of the boat a simple oblong plate P. is used, through which the
other bolt C. passes, and the bearings K. are fixed on to it in their relative
positions.
Holes are bored through the plates N. and P. so that they can be properly
secured to the boat.
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:-
In an improved controlled disengaging gear for ships' boat.
1. The hinged hooks, of the form, and arranged as herein described.
2. The moveable slotted heads with the rigid connection between them, as
set forth and applied in this Specification.
3. The fixed hooks as part of the gear, welded or otherwise fastened to the main
heads as already described.
4. The general arrangement of the parts as shown on the annexed drawing and
described in this Specification.
Dated this 25th don of
L
1004
JAS. MUIR.