IMPROVEMENTS IN WINDLASSES
Year: 1867

page_text: LETTERS PATENT to Edmund Walker, of London Street, in the City
of London, Manufacturer, for the Invention of "IMPROVEMENTS IN
WINDLASSES."
PROVISIONAL SPECIFICATION left by the said Edmund Walker at the
Office of the Commissioners of Patents, with his Petition, on the 14th
May 1867.
I, EDMUND WALKER, of London Street, in the City of London, Manufac-
turer, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN WINDLASSES," to be as follows:-
The first part of my Invention relates to the chain wheels or lifters of wind-
lasses, and my object is to adapt them to receive different sized chains or links.
For this purpose I construct the wheels or that portion which contains the
whelps or projections in two parts, one part constituting one side of the wheel
with its whelps or projections, and the other part the other side with its whelps
or projections. I secure these two parts together by bolts, and I regulate the
distance between them by washers, the number or thickness of which will be
determined by the size of chain or width of link for which the wheel is to be
employed; or instead of making the wheel in two parts I employ adjustable

page_text: inclined blocks or carriers to receive the sides of the horizontal or flat links of
the chain; these inclined blocks may be made altogether to take out, so
that blocks may be inserted to correspond with the links, or they may be
made to work in and out by screws, or otherwise, according to the size of
the links.
The next part of my Invention consists in an arrangement for working the
windlass from below instead of from above, as heretofore, in the employment
of a double clutch for putting either the quick purchase or the slow purchase
into action, and in an arrangement for connecting the windlass from below with
a capstan at a distance. A vertical shaft below the windlass and driven by
either of the arrangements hereafter described, or otherwise, carries two
bevil pinions, one of which gears with a small or quick purchase wheel on the
windlass shaft, and the other gears with a larger or slow purchase wheel on
the windlass shaft. Between the two pinions is a double clutch operated by
band, or otherwise, by means of which one or other of these pinions is put into
gear with the corresponding wheel on the windlass shaft, according as the
quick or the slow purchase is required.
When I drive the windlass by steam I carry a chain from the steam winch
or crane over a sheave on a vertical shaft, the lower end of which carries a
pinion in gear with a wheel on the vertical shaft of the windlass.
My arrangement before referred to for connecting the windlass with and
driving it from a capstan at a distance consists in connecting the vertical
shaft of the windlass by gearing to one end of a horizontal shaft, the opposite
end of which is connected by other gearing with the central shaft of the
capstan, whereby the motion of the capstan is transmitted to the windlass.
Additional shafts and gearing may be employed if the relative situations or
distance of the capstan and windlass require it.
The next part of my Invention consists in the combination of parts of
windlasses, as hereafter described, by which I can drive either or both of two
chain wheels, or lifters by means of one purchase. The windlass shaft carries
two chain wheels mounted loosely thereon; it has also fixed thereon a purchase
wheel in contact with one chain wheel and a circular plate or wheel in contact
with the other chain wheel. A pinion on a vertical shaft driven by capstan
bars, or otherwise, is in gear with the purchase wheel, and as the vertical
shaft rotates the windlass.shaft, therefore, also rotates together with the
purchase wheel and circular plate; then to drive either of the chain wheels
connect it to the purchase wheel.or circular plate, as the case may be, by the
means described in the Specification of Letters Patent granted to me on the
5th January 1866, No. 42, or connect it in any other convenient manner so

page_text: .
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edmund Walker in the Great Seal Patent Office on the
14th November 1867..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDMUND
WALKER, of London Street, in the City of London, Manufacturer, send
greeting.
WHEREAS: Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of May, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Edmund Walker, Her special licence that I, the said Edmund Walker,
my executors, administrators, and assigns, or such others as I, the said Edmund
Walker, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN WINDLASSES,"
upon the condition (amongst others) that I, the said Edmund Walker, my
executors or administrators, by an instrument in writing under my, or their
or one of their hands and seals, should particularly describe and ascertain
the nature of. the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Edmund Walker, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, reference being had to the Drawings hereunto annexed,
that is to say:-
The first part of my Invention relates to the chain wheels or lifters of
windlasses, and my object is to adapt them to receive different sized chains or
For this purpose I construct the wheels, or that portion which contains
the whelps or projections in two parts, one part constituting one side of the
wheel with its whelps or projections, and the other part the other side with its
links.

page_text: "
whelps or projections. I. secure these two parts together by bolts, and I
regulate the distance between them by washers, the number or thickness of
which will be determined by the size of the chain or width of link for which
the wheel is to be employed.
Figure 1 represents a section of a wheel or lifter constructed in this manner.
a, b, are the two halves of the wheel, and c, c, are washers interposed between
them to regulate their distance according to the width of link or size of chain;
d, d, are bolts to secure the whole together. Or instead of making the wheel
in two parts I employ adjustable inclined blocks or carriers to receive the
sides of the horizontal or flat links of the chain ;. these inclined blocks may. bé
made altogether to take out so that blocks may be inserted to correspond with
the links, or they may be made to work in and out by screws or otherwise
according to the size of the links.
Figures 2 and 3 represent a wheel with the inclined blocks or carriers
made altogether to take out, Figure 2 being a vertical section and Figure 3 a
view of the inner face of one half of the wheel. a, a, are the "snugs" which
receive the vertical links of the chain; b, b, are the inclined blocks or carriers
which are let into place and secured by bolts c, c. When another sized chain
is to be employed these blocks or carriers b, b, may be taken out and smaller
or larger blocks inserted according to whether the chain to be employed is
larger or smaller.
The next part of my Invention consists in an arrangement for working the
windlass from below instead of from above; as heretofore, in the employment
of a doublé clutch for putting either the quick purchase or the slow purchase
into action, and in an arrangement for connecting the windlass from below
with a capstan át a distance; this part of my Invention is represented in
Figures 4 and 5.
A vertical shaft A below the windlass, and driven by either
of the arrangements hereafter described or otherwise, carries two bevil pinions
C, D, one of which, C, gears with a small or quick purchase wheel E on the
windlass shaft, and the other, D, gears into a larger or slow purchase wheel F
on the windlass shaft. Between the two pinions is a double clutch G
operated by hand or otherwise, by means of which one or other of these
pinions is put into gear with the corresponding wheel on the windlass shaft
according as the quick or slow purchase is required.
When I drive the windlass by steam I carry a chàin from the steam winch
or crane over a sheave M on a vertical shaft K, the lower end of which carries
a pinion J in geaf with a wheel H on the vertical shaft A of the windlass.
My arrangement, before referred to, for conhecting the windlass with and
driving it from the capstan at a distance consists in connecting the vertical.

page_text: shaft A of the windlass by gearing N, O, to one end of a horizontal shaft P, the
opposite end of which is connected by: other gearing Q, R, with the central
shaft S of the capstan, whereby the motion of the capstan is transmitted to the
windlass. Additional shafts and gearing may be employed if the relative
situations or distance of the capstan and windlass require it. The capstan T
is made to run loose, but the head V is fixed and keyed firmly to the shaft S.
The windlass may either be worked by steam power, as before described, or
by hand bars applied to the capstan head V; the capstan itself may also be
worked either by steam power in the same manner or by hand bars.
The next part of my Invention consists in the combination of parts of
windlasses, as hereafter described, by which I can drive either or both of two
chain wheels or lifters by means of one purchase; this combination is repre-
sented in Figure 6. The windlass shaft A carries two chain wheels B, C,
mounted loosely thereon; it has also fixed thereon a purchase wheel D in
contact with one chain wheel, and a circular plate or wheel E in contact with
the other chain wheel. A pinion F on a vertical shaft G driven by capstan
bats or otherwise is in gear with the purchase wheel D; and as the vertical
shaft G rotates the windlass shaft A therefore also rotates, together with the
purchase wheel and circular plate E; then to drive either of the chain wheels,
connect it to the purchase wheel D or circular plate E, as the case (may be,
by the means testribed in the Specification of Letters Patent granted to me
on the 5th January, 1866, No. 42, that is to say, by the connecting plates
and pins H, or connect it in any other convenient manner, so that it may
rotate with the windlass shaft. I apply breaks I to the chain wheels, and
work them by levers K or otherwise.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim as my "Improve-
ments in Windlasses,"
First, constructing the chain wheels or lifters in two parts in order that
washers may be inserted between them to regulate the distance according to
the size of chain or width of link for which the wheel or lifter is to be
employed, substantially as herein-before described and represented in Figure 1
of the accompanying Drawings.
Second, constructing the chain wheels or lifters with inclined blocks or
carriers to receive the sides of the horizontal or flat links of the chain, which
inclined blocks or carriers are adjustable, being made either altogether to
take out or to work in and out, substantially as and for the purpose herein-
before described and represented in Figures 2 and 3. of the accompanying
Drawings..

page_text: Third, arranging windlasses, substantially as herein-before described and
represented in Figures 4 and 5, so that they may be worked from below
instead of from above.
Fourth, the employment of a double clutch, substantially as herein-before
described and represented in Figures 4 and 5 for putting either the quick or
the slow purchase into action.
Fifth, connecting. the windlass with a capstan at a distance, substantially as
herein-before described and représented in Figures 4 and 5.
Sixth, the combination of parts of windlasses, as herein-before described
and represented in Figures 4 and 5.
Seventh, the combination of parts" of windlasses, as herein-before described
and represented in Figure 6.
In witness whereof, I, the said Edmund Walker, have hereunto set my
hand and seal, this Fourteenth day of November, One thousand eight
hundred and sixty-seven.
EDMP. WALKER. (L.S.)