and Improvements in the Connected with Ships' Davits or Employment of Certain Parts of same for other Useful Purposes.
Year: 1888

page_text: Date of Application, 12th Jan., 1888
Complete Specification Left, 12th Oct., 1888
Complete Specification Accepted, 30th Nov., 1888
PROVISIONAL SPECIFICATION.
and
Improvements in
the
Connected with Ships' Davits
or
Employment of Certain Parts of same for other Useful
Purposes.
I, ALBERT GRAY, of Greville Lodge, Amyand Park Road, Twickenham, in the
County of Middlesex, Engineer do hereby declare the nature of this invention, which
has been communicated to me from abroad by Henry Wicks, of Strand Road,
Howrah Calcutta, India, Engineer, to be as follows:-
This invention relates to improvements in or connected with ships Davits' and the
employment of certain parts of same for other useful purposes.
According to the first part of this invention I fit the top of a ships davit with a
cross head so that a boat can be supported either directly therefrom or from
elongating ends or folding ends whereby boats of different lengths may be suspended
from it, the davit. being capable of swinging round to bring the boat inboard as is now
done where two davits are employed.
According to the second part of this invention, I step or support the davit's stem in
a socket or pillar fastened to the deck at a distance from the ship's side. Said socket
or pillar may have friction rollers in pockets for steadying said davit.
I provide the davit's stem with a worm wheel in gear with a worm or endless screw
to enable it to be turned round by means of a winch handle or its equivalent. Just
above the table or top of the socket or pillar I make or provide the davit with a
couple of arms for supporting an axle and rope drums, the outer end or ends of said
axle carrying a winch handle, so that the tackle or ropes by which the boat is
suspended can be wound on said drums. The axle also carries a friction wheel for
regulating the descent of the boat when necessary to launch her the rotation of the
drums being utilized for lifting the boat when desired.
This raising and lowering gear with or without the turning gear can be adopted for
single or usual davits used on ships but I prefer that they be in connection with the
cross headed davit.

page_text: If required, multiplying gear can be arranged in connection with the drums and
the tackle may be of the ordinary kind or any tackle for the instantaneous release of
the boat when she touches the water after lowering.
Instead of the winch handles being affixed to the axle, the said axles may be
operated by steam mechanism especially when these davits are employed in connection
with the raising or lowering of steam pinnaces or launch boats.
The drums on the davits may be used for warping, hauling, loading, unloading, or
other purposes when the boat is detached and secured in board.
H. GARDNER,
166, Fleet Street, London,
Agent for the said Albert Gray.

page_text: COMPLETE SPECIFICATION.
Improvements in or
with
Connected
Ships' Davits and the
Employment of Certain Parts of same for other Usefui
Purposes.
1, ALBERT GRAY, of Greville Lodge, Amyand Park Road, Twickenham, in the
County of Middlesex, Engineer, do hereby declare the nature of this invention,
which has been communicated to me from abroad by Henry Wicks, of Calcutta,
India, Engineer, 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 improvements in or connected with ships davits' and the
employment of certain parts of same for other useful purposes.
According to the first part of this invention, the top A of a ship's davit is provided
with a cross head B as at Figure 1 of the annexed drawings, so that a boat can be
supported or suspended either directly therefrom or from elongating ends C, C, as at
Figure 2, or folding ends C, C, as at Figure 3, whereby boats of different lengths
may be suspended from it, either from the eyes D, D of the cross head B, or
eyes E, E, of the fold over or the elongating bar C, the davit being capable of
swinging round to bring the boat inboard, as is now done where two davits are
employed.
The cross head B either of a plain kind, or with fold over or elongating ends may
be swivelled from the curved or projecting end F of the davit A, as at Figure 4, to
enable a boat suspended therefrom to be slewed for end motion while being hauled
inboard or for pushing the boat out whereby much less space would be required for
shifting the boat while on the davit from one position to another.
According to the second part of this invention, which is shown at Figure 5, the
stem G of the davit A is stepped or supported in a socket or pillar H fastened to the
deck I. Said socket or pillar may have friction rollers J in pockets for steadying said
davit A.
The davit's stem G is provided with a worm wheel K in gear with a worm or
endless screw L to enable it to be turned round by means of a winch handle M or its
equivalent. Just above the table or top N of the socket or pillar H, the davit A is
provided with a couple of arms P, P, for supporting an axle Q and rope drums R,
the outer end or ends of said axle Q carrying a winch handle S, so that the tackle or
ropes by which the boat is suspended from the cross head B of the davit A can be
wound on said drums R, R. The axle Q also carries a friction brake wheel T for
regulating the descent of the boat when necessary to launch her; the rotation of the
drums R, R, being utilized for lifting the boat when desired.
This raising and lowering gear with or without the turning gear can be adapted for
single or usual davits used on ships but it is preferred that they be in connection with
the cross headed davit as described with reference to Figures 1, 2, 3 and 4 annexed
hereto.

page_text: If required multiplying gear can be arranged in connection with the drums R, R,
and the tackle may be of the ordinary kind or any tackle for the instantaneous release
of the boat when she touches the water after lowering, can be applied.
Instead of the winch handles S, S, being affixed to the axle Q, the said axle may be
operated by steam mechanism especially when these davits are employed in connection
with the raising or lowering of steam pinnaces or launch boats.
The drums R, R, on the davits may be used for warping, hauling, loading,
unloading, or other purposes when the boat is attached and secured inboard.
If the boat be lashed to the cross head, the drums R, R, would be applicable for
warping, hauling, loading, or unloading, or other purposes, and if the boat be
detached from the cross head, the eyes D or E could be utilized for holding a sheave
block to enable ordinary tackle to be used for any purposes required.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed 1 declare that what 1
claim is:
1. Constructing ships davits with cross heads, or fitting cross heads to ships davits,
whether said cross heads be plain, as at Figure 1, have elongating ends, as at
Figure 2, or fold over ends, as at Figure 3 of the annexed drawings and whether
said cross heads be fixed to the davits or secured to then substantially as described
and as shown on the annexed drawings for the purpose or purposes set forth especially
when a single davit is used for that purpose.
2. The particular arrangement or combination of parts in connection with a ship's
davit, as shown at Figure 5 on the annexed drawings, by which an all round motion
of the davit can be obtained through the gearing K, L, and the hoisting and lowering
gear R, Q, when used in connection with a davit having a cross head of a plain or
extensible character, as described with reference to Figures 1, 2, 3 and 4 of the
drawings annexed hereto.
3. The employment of the boat's hoisting gear R, Q, when fitted as part of a ship's
davit for warping, hauling, loading, unloading, or other equivalent purpose when said
gear is not used for boat suspension from the dayit's cross head B as described.
The 12th day of October 1888.
H. GARDNER,
166, Fleet Street, London,
Agent for the said Albert Gray.