Improvements in Raising and Lowering Boats.
Year: 1896

page_text: Date of Application, 7th May, 1896
Complete Specification Left, Eth July, 1896-Accepted, 22nd Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Raising and Lowering Boats.
1, JAMES GRIFFIN of High Street, Uckfield, Sussex, Gentleman, do hereby
declare the nature of this invention to be as follows:-
My invention relates to improvements in raising and lowering boats, the object
being to provide apparatus of simple construction which, while occupying but little
space shall enable boats of various sizes to be quickly raised or lowered.
According to my invention I arrange a winch at each davit with double or single
purchase as required, the single purchase being employed for small and light boats,
the double purchase being more suitable for larger and heavier boats. The two
winches are connected by a horizontal shaft which is furnished with a handle or
handles at one or both ends, while a suitable length of hempen or wire rope is coiled
around each drum for raising and lowering purposes. Each winch is furnished with
suitable brake mechanism, so that the boat may be controlled and retained in any
position, and upon releasing the brake and raising the pawl the boat is lowered, the
rope running out freely and easily, while each davit is furnished with an arm or
lever of suitable length for swinging the boat in or out as required.
Dated this 7th day of May 1896
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W., Agent for the Applicant.
Improvements in Raising and Lowering Boats.
I, JAMES GRIFFIN of High Street, Uckfield, Sussex, Gentleman, 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 improvements in raising and lowering boats, the object
being to provide apparatus of simple construction which, while occupying but little
space,
shall enable boats of various sizes to be easily and quickly raised or lowered.
According to my invention, I arrange a winch at each davit, with double or
single purchase as required, the single purchase being employed for small and light
boats, the double purchase being more suitable for larger and heavier boats. The
two winches are connected by a horizontal shaft which is furnished with a handle at
one or both ends, while a suitable length of hempen or wire rope is coiled around
each drum for raising and lowering purposes.
Each winch is furnished with suitable brake mechanism so that the boat may be
readily controlled or retained in any desired position and upon releasing the brake
and raising a locking pawl, the boat is lowered, the rope running out freely and
easily, while each davit is furnished with an arin or lever of sufficient length for
swinging the boat in and out as required.
In order that my invention may be more fully understood, I will now proceed
to describe same with reference to the accompanying drawings in which
Fig. 1 is a front elevation showing the arrangement of winches and davits, the
outline of a boat being indicated by dotted lines.
Fig. 2 is a side elevation of one of the winches and davits.

page_text: Fig. 3 is a detailed view of the band brake mechanism and Figs. 4 and 5 show
the two positions of the locking pawl.
According to my invention I arrange at the foot of each davit d, d, a winch w, w,
comprising two uprights or standards a, a', between which is arranged the drum d¹, d',
mounted upon the horizontal connecting shaft s. Each end of the shaft s is
furnished or fitted with the gear wheels g engaging with the smaller or pinion
wheel mounted upon the spindle the end of which is squared to receive a
suitable crank handle for operating the winch.
One of the winches is further fitted with a band brake b (Fig. 1) and shown in
detail (Fig. 3) and with a locking pawl and ratchet wheel p, the two positions of
which are shown in detail at Figs. 4 and 5.
The band brake which is of the usual construction comprises a cylindrical body or
drum c around which is arranged a band c¹ the ends of which are connected to a
suitable arm or operating lever such as c³ (Fig. 3), and by this means the brake can
be applied as required by simply operating the aforesaid arm or lever c², for the
purpose of controlling the raising or lowering of the boat.
In order to retain the said boat in any required position the locking pawl
mechanism shown in Figs. 4 and 5 is employed, said mechanism comprising the
pawl and ratchet wheel together with the operating arm or piece 2. When
the aforesaid operating arm or piece occupies the position shown in Fig. 4 the
end 3 of the pawl h is free to engage with the ratchet wheel ', thereby preventing
the working parts of the winch from further revolving for the purpose of lowering
the boat and thus keeping or retaining it in any desired position, while upon
pulling over or reversing the operating arm or piece has shown at Fig. 5, the
end is raised clear of the teeth of the ratchet wheel thereby allowing same to
revolve and the boat to be lowered, the speed etc., of the said lowering being controlled
by the aforesaid band brake.
Each davit is of suitable construction such for instance as shown at d (Figs. 1 and 2)
and is fitted or furnished with either single or double purchase according to the size
and weight of the boat to be raised or lowered, the usual and necessary rollers etc.,
being provided over which the rope » passes.
Each davit d is further provided with an arm or lever f for the purpose of swinging
or turning same and which is retained or held in the raised position by the supporting
rod as shown on the left hand side of Fig. 1 while when not required for use
the parts are allowed to assume the position shown on the right hand side of Fig. 1.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I deciare that what I
claim is :
1. The new or improved arrangement or device for raising and lowering boats,
comprising two winches w, w, connected by a horizontal shaft such as s and furnished
with drums d, d, gear wheels g, g', a brake b, and locking pawl mechanism p, in
combination with suitable davits such as d, d, having operating arms or levers f,,,,
the whole combined, arranged and operating substantially as herein described and
shown and for the purposes specified.
2. The improvements in raising and lowering boats, substantially as herein
described and shown and for the purposes specified.
Dated this 2nd day of July 1896.
F. G. CASSELL
(Of Cassell & ('o.),
22, Glasshouse Street, Regent Street, London, W., Agent for the Applicant.