Improvements in Shackles applicable for Anchors or Anchor Chains.
Year: 1898

page_text: Date of Application, 6th May, 1898-Accepted, 11th June, 1898
COMPLETE SPECIFICATION.
Improvements in Shackles applicable for Anchors or Anchor Chains.
I, CHARLES HAASE, of Monument Beach, in the County of Barnstable and State
of Massachusetts, United States of America, 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 purpose of the present invention is to improve the shackle or connecting
means between an anchor and its cable and between lengths of the cable so as to
admit of the slipping of the anchor at a moment's notice without necessitating the
loss of the cable. In the ordinary shackle the connecting pin frequently rusts
and becomes stuck and cannot be removed, and the slipping of the anchor is
frequently attended with loss of time and the entire cable.
One of the principal features of the present invention is to cause the shackle pin
to move with the link, thereby preventing the rusting of the pin so that it can be
unshipped when required at an instant's notice, thereby freeing the anchor and
resulting in saving that part of the cable not run out.
For a full understanding of the merits and advantages of the invention reference
is to be had to the accompanying drawings, and the following description.
The improvement is susceptible of various changes in the form, proportion, and
the minor details of construction without departing from the principle or sacrificing
any of the advantages thereof, and to a full disclosure of the invention an adaptation
thereof is shown in the accompanying drawings, in which-
Figure 1 is an elevation of a shackle constructed in accordance with this inven-
tion, parts being broken away.
Figure 2 is a perspective view of the shackle proper.
Figure 3 is a detail view of the link.
Figure 4 is a perspective view of the connecting pin.
Figure 5 is a longitudinal section of the shackle, the dotted lines showing the
position of the link when turned to bring the notch therein in register with the
notch in a shank of the shackle.
Corresponding and like parts are referred to in the following description and
indicated in the several views of the drawing by the same reference characters.
The shackle is of ordinary appearance, and its shanks have transversely-
aligning openings 2 to receive the coupling pin 3; by means of which the link 4
is attached thereto. A notch 5 extends from a side of one of the openings 2, and
increases in depth towards the outer side of the shackle, and receives a wooden pin
or key 6 of corresponding taper.
This
The coupling pin 3 is round and of a length so as to have its ends come about
flush with the outer sides of the shackle, and is provided midway of its ends with a
longitudinal projection 7 of a length corresponding to the distance between
the inner faces or sides of the shanks comprising the shackle.
projection 7 is of a size to pass readily through the notch 5, and upon
turning the pin 3 so as to bring the projection out of register with said
notch its end portions will engage with the inner faces or sides of the shanks of
the shackle and prevent longitudinal movement or displacement of the coupling pin.
The link 4 has openings 8 at its ends, and one of the openings has a notch 9 to
receive the projection 7 of the coupling pin, whereby the link and pin move together
[Price 8d.1

page_text: when the cable is vibrated or handled. This notch 9 is located near one side of
the opening 8 and inclines, thereby admitting of the link 4 being turned to bring
the notches 9 and 5 in register without requiring the outer or free end of the said
link 4 to enter the space formed between the shanks of the shackle, as indicated by
the dotted lines in Figure 5.
When placing the link 4 in position it is turned so as to bring its notch 9 in
coincident relation with the notch 5, after which the coupling pin 3 is passed
through the aligning openings 2 and 8, the projection 7 passing through the
notches 9 and 5, and the pin being limited in its inward movement by the pro-
jection 7 engaging with the inner face of the shank opposite that having the
notch 5. Upon turning the link so as to bring the notches 5 and 9 out of register,
the coupling pin is prevented from displacement. The key 6 is now forced home
in the notch 5, and being of wood will not become stuck by corrosive action. In
order to prevent the jamming of the coupling pin by the key, the notch 5 is made
of dovetail shape, and the key. 6 of corresponding or wedge form. When it is
required to slip the anchor, the link 4 is turned into the position shown by the
dotted lines in Figure 5, when the coupling pin can be unshipped by driving.
thereon, the projection 7 engaging with the key 6 loosening and removing the
latter.
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. In combination, a shackle having its shanks formed with transversely-
aligning openings, one of the openings having a notch extending therefrom, a
link having a notch corresponding with the notch of the shank, and a coupling pin
having a projection midway of its ends and of a length corresponding to the
distance between the shanks of the shackle, and adapted to pass through the notched
shank and engage with the notch of the link and interlock with the latter, whereby
the pin and link move together, substantially as set forth.
2. In combination, a shackle having its shanks formed with transversely-
aligning openings, and having a notch extending from one of the openings, a
link having an opening and a notch extending from the opening near one side and
inclining, and a coupling pin having a projection midway of its ends to pass
through the notch of the shank and enter and interlock with the notch of the
link, substantially as set forth.
3. In combination, a shackle having its shanks formed with transversely-
aligned openings, and having one of the openings provided with a notch extending
therefrom, a link having an opening correspondingly notched, a coupling pin
having a projection to pass through the notch of the shank and interlock with the
notch of the link, and a key of wood or like material fitted into the notch of the
shank, substantially as set forth.
4. In combination, a shackle. having its shanks formed with transversely-
aligning openings, one of the openings having a notch extending therefrom taper-
ing throughout its length and of dove-tail shape, a link having an opening
provided with a notch near one side of the opening, a coupling pin having a pro-
jection midway of its ends to pass through the notch of the shank and interlock
with the notch of the link, and a tapering key of wedge form secured in the notch
of the shank, substantially as and for the purpose set forth.
шау
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.