IMPROVEMENTS IN DETACHING GEAR FOR SHIPS BOATS
Year: 1884

page_text: JOHN SAYERS WILSON Boilermaker 47 Northbrook Road Southampton do
hereby declare the nature of my invention for IMPROVEMENTS IN DETACHING
GEAR FOR SHIPS BOATS to be as follows viz. :-
I claim in this invention Two special points which are marked 3. 3. & 4 on
drawing In 3. 3. I claim Two levers working on centre pins between sling bolts.
on the top end of these levers where the falls are hooked on lips are formed at the
extreme ends which prevents the levers from unlocking until the whole of the
weight of the boat.is taken by the water. These levers are connected together by
a rod at the bottom or top of boat. In 4 I claim a spring or dead weight for.
unlocking the levers immediately the whole of the weight of the boat is taken by
the water This spring or deadweight can be fixed to any part of lovers or their
connections.

page_text: COMPLETE SPECIFICATION.
JOHN SAYERS WILSON 47 Northbrook Road Southampton Foreman Boilermaker
Union Steam Ship Co. I John Sayers Wilson do hereby declare the nature of my
invention for GEAR FOR ATTATCHING & DETATCHING SHIPS BOATS and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
This invention has for its object the construction of an apparatus for detatching
& attatching ships boat to & from the davit falls, either to work automatically or
by hand & may be briefly described as follows per accompanying sketch (i.c.)
Figure 1. is a longitudinal section of boat showing the gear as applied thereto.
Figure 2. is a plan of boat showing the plate as fixed on thwart of boat, into
which the head of the gear works.
The working parts of this gear which I claim in this invention are marked on
sketches A. A. & B. C. C. D. D. E. E. & F. F. & may be thus explained :-
A. A are tumblers working on centre pins between-sling bolts, at the top. ends
of A. A. nipples are formed for hooking on the links of the blocks, on the under
side of these nipples recesses are formed for the links of the blocks to fit into, which
prevent the tumblers from unlocking until the boat is waterborne.
The bottom ends of A. A. are connected to a small rod running along the
bottom of boat which causes them to lock & unlock similtaneously.
B. is a spring encased in a pipe the end of which is secured to the sling bolt, a
slot is cut in the end of the pipe into which the tumbler A works, & the edge of
which always bearing on the spring B. causes the tumblers A. A. to unlock as soon
as the boat is waterborne.
The spring B. to prevent corrosion is electro-plated. A dead weight can be
applied to any convenient part of tumbler in place of spring B if prefered.
C. C. are flaps which open back for hooking on the links of the block & when
hooked on close down & keep the links in their places.
D. D. are double joints connecting the tumblers A. A. with the rod at bottom of
boat preventing said rod from being raised by the action of the tumblers A. A.
E. E. are plugs for locking the gear for hooking on & when the buat is raised up
to the davit heads the plugs E. E. are removed & others of the same kind substi-
tuted, these are made fast with a lanyard at davit heads & as soon as the boat is
commenced to be lowered these plugs are drawn out by the lanyards leaving the
boat free to detatch as soon as waterborne.
F. F. are handles for pulling the tumblers A. A. into gear for locking they work
in slots in the head of A. A. To lock the gear you pull them up & when
locked they drop down out of the way.
What I claim in this invention is "improvements in detatching gear for ship's
boats" as stated in foregoing completo specification.
Dated at Southampton this 23rd day of December 1884.