Improved Boat Lowering and Disengaging Gear.
Year: 1890

page_text: Date of Application, 22nd Mar., 1890
Complete Specification Left, 22nd Dec., 1890-Accepted. 21st Mar. 1891
PROVISIONAL SPECIFICATION
Improved Boat Lowering and Disengaging Gear.
FRED THOMAS, 12, Great Brunswick Street, Dublin, Ireland, Boot Merchant,
do hereby declare the nature of this invention to be as follows:-
An improved apparatus for lowering ships boats, in a simple and effective
manner.
The appliances consist of the ordinary tackles with a small extra block at each
davit head a single forward, and a double (block) aft. The releasing gear consists
of a revolving tumbler in the lower block (which has no hook) and a pair of
specially designed hooks, which are hooked on to the tumblers, a pin attached to
the hooks by a short chain is used for locking the apparatus when the boat is hooked
on, this pin is removed when the boat is hoisted, and replaced by the releasing pin,
to which is attached a line reeving through the small blocks at the davit heads, and
down to the hand of the officer in charge of the boat, by whom the boat can be
instantly released from the tackles any time she is waterborne by his hauling the
releasing line and drawing the pins.
Dated this 21st day of March 1890.
FRED THOMAS.
COMPLETE SPECIFICATION.
Improved Boat Lowering and Disengaging Gear.
FRED THOMAS, 12, Great Brunswick Street, Dublin, Boot Merchant, 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 consists of the ordinary tackles (1) with a small extra block at
each davit head marked 2. and 3. a single forward, and a double aft. The lower
blocks (4) in each tackle is fitted with a revolving tumbler (B. B.) and a swivel
shackle (A) in place of a hook. In the boat is placed a pair of specially designed
hooks (CC) both fore and aft, which act against each other, and are hooked on to
the tumbler (13 B) in the lower blocks. To the hooks (CC) is attached a pin and
chain, (F) which is used when the boat is hooked on, by passing through the
cars (D. D.) which overlap each other, and through a hole in the pin (G) completely
locks the apparatus, so no sea that might strike the boat, or any other interruption
could possibly disengage her from the tackles. She is now hoisted and secured, at
the davit heads, when the locking pin is taken out, and replaced by the releasing
pin, attached to the releasing line (H) rove through the two small blocks at the
davit leads, and passing down aft with a bridle (J) to the hand of the officer in
charge, by whom she can be released by drawing the pins the moment she takes
the water.
The releasing is a split pin attached to the line (H) and is inserted through the
locking ears (D. D.) which consist of two projections, one on each hook, one
overlapping the other, the holes in which correspond with the hole in the head of
the pin (G) which forms the joint connecting the gear with the standard (E) that
passes down through the keel of the boat.
The features of novelty I claim in my invention are:-

page_text: 2. The novelty of design in hooks (C C).
3. The design and novelty of the locking parts (DD) and split pin F, and
the hole in head of pin (G) which completes the locking, or hooking on,
part.
4. The novelty of the small blocks (2.) and (3) at each davit head, the
releasing pins and lines (H. H.) rove through them, and bridle (J) which can be
altered, and regulated with ease to correspond with any height a ships side may
be out of the water.
A
1
لمه
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FRED THOMAS.