An Improvement in Boat Lowering Tackle.
Year: 1891

page_text: Date of Application, 16th Apr., 1891
Complete Specification Left, 18th July, 1891-Accepted, 22nd Aug., 1891
PROVISIONAL SPECIFICATION.
An Improvement in Boat Lowering Tackle.
I, EDWARD JACOB HILL of 11 Victoria Street, in the City of Westminster,
Engineer do hereby declare the nature of this invention to be as follows:-
My invention relates to an improvement in the boat-lowering tackle forming the
subject of previous Letters Patent dated November 29th 1889, No. 19226, whereby
the lowering of the boat is effected by means of special blocks and falls supple-
mentary to the ordinary multiple purchase tackles used for raising the boat, the
lowering of the boat on an even keel being ensured by a multiple purchase barrel
from which both the supplementary falls are unwound simultaneously under the
control of a handing rope which is wound on the barrel concurrently with the
winding off of the said falls.
My present improvement consists in substituting, for the barrel above referred to,
a tackle formed of blocks and falls in the ordinary way and having any required
amount of purchase, to which both of the supplementary falls are carried around
guide sheaves whose pins are mounted on vertical axes so as to be capable of
swinging in any direction required, the ends of the said falls being attached to the
running blocks of this handing tackle and the standing block being made fast to
any suitable fixed point on deck.
Dated this 16th day of Anil 1901
E. J. HILL.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
An Improvement in Boat Lowering Tackle.
I EDWARD JACOB HILL of 11, Victoria Street, in the City of Westminster,
Engineer, 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 :-
My invention relates to an improvement in the boat lowering tackle forming the
subject of previous Letters Patent dated November 29th 1889 No. 19226 whereby
the lowering of the boat is effected by means of special blocks and falls (supple-
mentary to the ordinary multiple purchase tackles used for raising the boat) the
lowering of the boat on an even keel being ensured by a multiple purchase barrel
from which both the said supplementary falls are unwound simultaneously under
the control of a handing rope which is wound on the barrel concurrently with the
winding off of the said falls.
My present improvement consists in substituting, for the barrel above referred to,
a multiple purchase tackle of the ordinary kind by which the said supplementary
falls are simultaneously controlled, the said tackle being made fast to any convenient
point whereby the falls are simultaneously controlled.
Figures 1 and 2 of the accompanying drawings illustrate my invention in
perspective and sectional views respectively.
A, B, B2, are the ordinary multiple purchase davit tackles to be used for hoisting
the boat. C C are the supplementary "falls" or ropes passing over special
sheaves in the "standing" blocks B' of the davit tackles and are made fast, each
by a shackle a, to an ear on the ring D by which the "running" block B is
connected to the hook E on the boat. These ropes C C₁ pass each over guide

page_text: sheaves cc on the davits, the one fall C passing round a sheave c¹ and thence to the
running block F of the handing tackle to which it is attached whilst the other
fall Cpasses round sheave and then round a sheave e³ and thence to the
block to which it also is attached. The blocks carrying the guide sheaves c¹² c³
are connected to ring bolts, or fixed to the davits, so us to be free to accommodate
themselves to the direction in which the falls C C lead as the handing tackle G
need not necessarily be situated in the position represcuted, its "standing" block H
being made fast to any convenient point.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is―
The herein described boat lowering tackle consisting in the combination, with the
ordinary davits and multiple purchase hoisting tackle, of supplementary falls C C
attached to the rings D passing over guide sheaves and combined with a multiple
purchase handing tackle, F, G, H, to the running blocks F of which the falls are
also attached so as to be simultaneously controlled thereby, as specified.
ALB
E. J. HILL.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.