A SWIVEL SHACKLE FOR SHIP'S ANCHORS
Year: 1885

page_text: I, CHARLES BOYCE of 3 Park Lane West in the Parish of Tipton in the
County of Stafford, Anchorsmith do hereby declare the nature of my invention
for A SWIVEL SHACKLE FOR SHIP'S ANCHORS, to be as follows:-
My invention relates to an improvement in the Shackles for Ship's Anchors, and
has for its object to provide a Shackle with swivel attachment to prevent the
fouling, knotting or twisting of Ship's Cables.
In carrying my invention into practice I form my Swivel Shackle of three
main parts namely the End Shackle A for attachment to the end link of the
ship's cable, a Swivel Collar Eye C, and the principal, or anchor Shackle F.
The said principal, or anchor, shackle F having a bolt G passed through its
extreme ends, which bolt also passes through the square end of the shank of
the 'Anchor to secure the principal shackle F to the Anchor. The End
Shackle A and the Principal Shackle F are connected together by means of a
Swivel Collar Eye C; a bolt B passing through the extreme ends of the End
Shackle and likewise through the Swivel Collar Eye C, which is placed between
the two jaws of the End Shackle A. The Swivel Collar Eye C also passes through
the top or bell D of the Principal Shackle F in which it is allowed to revolve, and
is secured inside the Principal Shackle F by means of a head E worked on the end
of the Swivel Collar Eye C, It will thus be seen that in no matter what position
the Ship's Anchor is fixed, the Swivel Collar Eye C will revolve in either direction,
thus allowing the ship's cable-to which it is attached by means of the End
Shackle A-to twist or revolve to any extent without causing the cable to foul,
twist or knot; and so obviating the great wear or friction caused by the use of
fixed or immoveable anchor shackles.

page_text: A Swivel Shackle for Ships' Anchors.
I, CHARLES BOYCE, of 3 Park Lane West, in the Parish of Tipton, in the
County of Stafford, Anchorsmith, do hereby declare the nature of my invention
for A SWIVEL SHACKLE FOR SHIP'S ANCHORS and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement, reference being had to the drawings which accompanied my provisional
specification :-
My invention relates to an improvement in Shackles for Ship's Anchors, and has
for its object to provide a Shackle, with swivel attachment, to prevent the fouling,
knotting, or twisting of a ship's cable; especially in the case of mooring anchors.
My invention is illustrated in the drawings which accompanied my provisional
specification, in which Figures 1 and 2 represent two views of my Swivel Shackle.
In carrying my invention into practice I form my Swivel Shackle of three principal
parts, namely, the Principal or Anchor Shackle F, which is secured to the square
end of the shank of the Anchor; the end shackle A, which is provided for attach-
ment to the end link of the ship's cable; and the Swivel Collar Eye C, which is
used to connect the principal or anchor Shackle F, with the end or cable Shackle A.
The principal or Anchor Shackle F has a bolt G passed through its extreme ends,
which bolt when the shackle is affixed to the Anchor-passes through the square
end of the shank of the anchor, which is thus fitted between the two jaws or sides
of the principal or Anchor Shackle F in such a manner as to admit of an oscillatory
motion of the Shackle upon the end of the shank of the Anchor. The end
shackle A-which is attached to the end link of the ship's cable,-being.connected
with the principal or Anchor Shackle F by means of a Swivel Collar Eye C ;--a
bolt B passing through the extreme ends of the end shackle A and also through the
Swivel Collar Eye C, which is thus fitted between the two jaws or sides of the end
shackle A as to allow an oscillatory motion of the end Shackle A upon the Swivel
Collar Eye C. A portion of the said Swivel Collar Eye C also passes through the
top or bell D of the principal or Anchor Shackle F, in which bell the said Swivel
Collar Eye C is free to revolve to any extent, and in either direction, and is secured
inside the principal or Anchor Shackle F by means of a head E formed upon the
end of the said Swivel Collar Eye C, while the said Swivel Collar Eye C is
restrained from passing too far through the Bell D by a shoulder formed on the
said Swivel Collar Eye C, such shoulder working upon the top or outside of the
Bell D of the principal or Anchor Shackle F.
It will thus be seen by the above description that in whatever direction the
ship's anchor is fixed, the Swivel Collar Eye C will revolve in either direction,
thus allowing the ship's cable-to which the Swivel Collar Eye C is attached by
means of the end Shackle A,-to turn or revolve to any extent and in either
direction, without allowing the cable to foul, twist or knot, and so obviating the
enormous wear and friction caused to ship's cables by the use of fixed or immové-
able anchor shackles. Such advantages as hereinbefore described as pertaining to
my improved Swivel Shackle, being particularly applicable in the case of mooring
Anchors.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The general construction of an improved Swivel Shackle for Ship's Anchors,
that will allow the Ships Cable to turn or revolve to any extent and in either
direction, no matter in what position the Ship's Anchor may be fixed; without
allowing the cable to foul, twist or knot; and by these means obviating the wear
and friction caused by the use of fixed or immoveable anchor shackles; substan-
tally as hereinbefore described and illustrated in the drawings which accompanied
my provisional specification.