IMPROVEMENTS IN ANCHORS
Year: 1885

page_text: A.D. 1885, 15th SEPTEMBER, N° 10,923.
We GEORGE BENJAMIN HINGLEY of the Firm of N. Hingley and Sons of
Netherton Iron Works near Dudley in the County of Worcester Iron Masters and
JAMES ROBSON CURRY of Church Road Netherton aforesaid Forgeman do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN ANCHORS" to be
as follows:-
Our invention has reference to such anchors as have arms or flukes attached to
the ends of a spindle or axle passing through and working in a hole in the crown
head the angular motion of the said spindle or axle in the crown head being limited
so that the arms or flukes can move only through an angle of about forty-five
degrees on each side of the shank.
Our said invention consists mainly in constructing and arranging the parts
whereby the limiting of the motion of the spindle or axle in the crown head is
effected.
That portion of the spindle or axle which works in the crown head has at
opposite points ribs parallel to the axis of the spindle. The sides of these ribs are
radial and their faces are portions of a cylinder concentric with the said spindle
or axle.
The hole in the crown head is of such a diameter that the cylindrical faces of the
ribs on the spindle or axle take an accurate bearing therein. In order to limit the
motion of the spindle or axle in the hole in the crown head within the required
angle two ribs are formed at opposite points in the said hole in the crown head,
the said ribs being parallel with the axis of the spindle. The sides of the said ribs
are radial and the faces of the said ribs are concave their concavity having the
same radius as the spindle or axle. The concave faces of the said ribs take a
bearing and work upon the portions of the spindle or axle between the ribs on the
spindle or axle. The breadth of the ribs on the spindle or axle and those in the hole
in the crown head are such that when the spindle or axle is introduced into its place
in the crown head and the ribs in the crown head engaged between the ribs on the
spindle or axle the said spindle can only move through an angle of about ninety
degrees.

page_text: The proper position of the spindle or axle in the crown head is maintained by
two collars on the said spindle bearing against opposite sides of the crown head
one of the said collars being fixed and preferably made in one piece with the
spindle the other collar has a sliding motion on the spindle and when brought into
position is fixed by a cross pin or cotter.
We prefer to make the ribs on the spindle or axle and in the hole in the crown
head solid or in one piece with the spindle or axle and crown head respectively
but we do not limit ourselves to this method of manufacture as the said ribs may
be made separate from the spindle and crown head and fixed in position by taking
into undercut recesses in the spindle and crown head or may be otherwise fixed in
position.

page_text: Improvements in Anchors.
We GEORGE BENJAMIN HINGLEY of the Firm of N. Hingley and Sons of
Netherton Iron Works near Dudley in the County of Worcester Iron Masters and
JAMES ROBSON CURRY of Church Road Netherton aforesaid Forgeman 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:-
Our invention has reference to such anchors as have arms or flukes attached to
the ends of a spindle or axle passing through and working in a hole in the crown
head, the angular motion of the said spindle or axle in the crown head being
limited so that the arms or flukes can move only through an angle of about forty-
five degrees on each side of the shank.
Our said invention consists mainly in constructing and arranging the parts
whereby the limiting of the motion of the spindle or axle in the crown head is
effected.
That portion of the spindle or axle which works in the crown head has at
opposite points ribs parallel to the axis of the spindle. The sides of these ribs
are radial and their faces are portions of a cylinder concentric with the said spindle
or axle.
:
"
The hole in the crown head is of such a diameter that the cylindrical faces of
the ribs on the spindle or axle take an accurate bearing therein. In order to limit
the motion of the spindle or axle in the hole in the crown head within the required
angle, two ribs are formed at opposite points in the said hole in the crown head
the said ribs being parallel with the axis of the spindle. The sides of the said ribs
are radial and the faces of the said ribs are concave, their concavity having the
same radius as the spindle or axle. The concave faces of the said ribs take a
bearing and work upon the portions of the spindle or axle between the ribs on the
spindle or axle. The breadth of the ribs on the spindle or axle and those in the
hole in the crown head are such that when the spindle or axle is introduced into
its place in the crown head and the ribs in the crown head engaged between the
ribs on the spindle or axle, the said spindle can only move through an angle of
about ninety degrees.
The proper position of the spindle or axle in the crown head is maintained by
two collars on the said spindle bearing against opposite sides of the crown head one
of the said collars being fixed and preferably made in one piece with the spindle ;
the other collar has a sliding motion on the spindle and when brought into position
is fixed. by a cross pin or cotter.
Figure 1 of the accompanying Drawing represents in end elevation and Figures 2
and 3 partly in end elevation and partly in cross section and Figure 4 in front
elevation an anchor provided with our stop arrangement for limiting the motion of
the spindle or axle in the crown head. In Figure 1 the arms or flukes are repre-
sented in the middle position; in Figure 2 the arms or flukes are represented
moved through an angle of forty five degrees on one side of the shank and in
Figure 3 the said arms or flukes are represented moved through an angle of forty
five degrees on the opposite side of the shank,

page_text: Figure 5 represents in elevation and cross section the spindle or axle of the
anchor detached and Figure 6 represents the shank in end elevation and partly in
Bection detached from the spindle or axle.
The same letters of reference are used to indicate the same parts in the several
Figures of the Drawing.
с
a is the shank of the anchor and at the crown head of the same; c is the axle
or spindle carrying at its ends the arms or flukes d, d the said axle or spindle
working in the hole e in the crown head a². The spindle or axle o has on it at
opposite points ribs f. f parallel to the axis of the spindle (see Figure 5) where it
will be seen that the sides of the ribs are radial and their faces are portions of a
cylinder concentric with the spindle or axle c. It will be seen by an examination
of Figures 2 and 3 that the hole c in the crown head a² is of such a diameter that
the cylindrical faces of the ribs f. f on the spindle or axle c take an accurate
bearing therein... For the purpose of limiting the motion of the spindle or axle c in
the hole in the crown head within the required angle, that is, within an angle of
ninety degrees, two ribs g, g are made at opposite points in the hole in the crown
head a (see Figures 2. 3 and 6) and parallel with the axis of the spindle c. The
sides of the ribs g,g in the hole in the crown head a' are radial and the faces of the
said ribs are concave, their concavity having the same radius as the spindle or
axle c so that the concave faces of the said ribs g, g take a close bearing upon the
portions of the said spindle c between the ribs f, f on it. It will be seen by an
examination of the drawing that the breadth of the ribs f, f on the spindle c and
the ribs g, g in the hole in the crown head are such that the said spindle can only
move through an angle of about ninety degrees, that is, can only move between
the two positions represented in Figures 2 and 3.
The crown head a² works between the two collars h, i on the spindle c. The
collar his fixed and the other collar i is capable of a sliding motion on the
spindle (see Figure 5) and when brought into position is fixed by the cross pin or
cotter k.
We prefer to make the ribs f, ƒ on the spindle or axle c and the ribs g, g in the
hole in the crown head a solid or in one piece with the spindle or axle e and
crown head a³ respectively but we do not limit ourselves to this method of manu-
facture as the said ribs may be made separate from the spindle and crown head
and fixed in position by taking into undercut recesses in the spindle and crown
head or may be otherwise fixed in position.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that we
claim as our invention ;-
Limiting the motion of the axle or spindle of anchors of the kind described in
the crown head by means of rib stops ff on the said axle or spindle engaged
between rib stops g,g in the hole in the crown head, the said rib stops f, f and g, g
being constructed and arranged with respect to one another and operating substan-
tially as herein before described and illustrated in the accompanying Drawing.
Dated thia Turanks onmonth dow of M. 1000