Improvements in Steam Winches.
Year: 1895

page_text: Date of Application, 30th Mar., 1895
Complete Specification Left, 28th Dec., 1895-Accepted, 1st Feb., 1896'
PROVISIONAL SPECIFICATION.
Improvements in Steam Winches.
I, WILLIAM JAMES PIRRIE, J.P., of Queen's Island, Belfast, in the County
of Antrim, Ireland, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to provide an improved form of winch for working
cargo, warping, and other purposes on board ship, or in such situations as a winch
of this description may be required.
:
The improved steam winch has two cylinders driving the first motion shaft
The first
through piston and connecting rods and disc cranks in the usual manner.
motion shaft is provided with two or more pinions, each of which gears into a wheel
on the second motion shafts, there being generally two of these, but in some cases
there may be more.
These two or more second motion shafts are each fitted with
two drum ends, those on one shaft projecting beyond those on the other shafts.
Thus four or more whips or falls can be conveniently used off each winch, the
usual centre barrel for the chain not being required. In most cases, the winch is
made to run in one direction only, and I also preferably use double helical gearing
instead of straight gearing of the ordinary description.
001 of March 1895
Improvem
1, WILLIAM JAMES PIRRIE, J.P., of Queen's Island, Belfast, in the County
of Antrim, Ireland, 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 an improved form of winch for working
cargo, warping, and other purposes on board ship, or in such situations as a winch
of this description may be required.
The improved steam winch has two cylinders driving the first motion shaft
The first
through piston and connecting rods and disc cranks in the usual manner.
motion shaft is provided with two or more pinions, each of which gears into a wheel
on the second motion shafts, there being generally two of these, but in some cases
there may be more. These two or more second motion shafts are each fitted with
two drum ends, those on one shaft projecting beyond those on the other shafts.
Thus four or more whips or falls can be conveniently used off each winch, the
usual centre barrel for the chain not being required. In most cases, the winch is
made to run in one direction only, and I also preferably use double helical gearing
instead of straight gearing of the ordinary description.

page_text: a a are the cylinders, the piston rods, ce the connecting rods, d d the disc
cranks, e the first motion shaft and ff two pinions upon it. The pinions gear with
wheels h on the second motion shafts jk. are drums on the shaft j and
m m drums on the shaft k.
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 :-
1. A winch having two or more second motion shafts driven in the same direction
by a single first motion shaft and each fitted with two or more drums substantially
as described.
2. Winches substantially as described and shown in the drawings.
W. J. PIRRIE.