Year: 1899

page_text: I, IRA CROCKER, of 266, Spring Street, in the City of Portland, State of Maine,
United States of America, Mechanical Engineer, a Citizen of the United States,
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 and accompanying drawing, that is to say: —
My invention relates to anchors having a removable stock, such stocks having
hitherto been held in place within the opening in the shank by means of a
shoulder located upon one side if the shank and a key set in a slot in the stock
upon the other side of the shank. Thus constructed the anchor is found incon-
venient in use by reason of the frequent loss of the key, of its rusting into the
slot or becoming broken, and because of the weakening of the stock by the
insertion of the slot.
My improvement is a novel method of locking the stock by which these dis-
advantages are obviated.
In the drawings, Figure 1 is a perspective view. Fig. 2 is a front elevation of
the upper part of the shank and part of the stock. Fig. 3 is a detail shewing
in side elevation the upper part of the shank and strap with the shackle in
place; Fig. 4 a detail shewing in side elevation the top of the shank with the
strap unlocked: Fig. 5 is a detail shewing in side elevation the upper part of
the stock. Fig. 6 is a side elevation of the strap; and Fig. 7 is a section of
the shank, strap, and stock.
The shank a has the ordinary arms 6 and flukes c. The upper part of the
shank is provided with a keyhole-slot d of the shape shewn in Fig. 5, the lower
walls of the lower part widening as they approach the bottom.
The strap e is of the shape shewn in Figs. 1, 2, and 6, the lower ends being
provided with a keyhole-slot f, the circular part of which is described upon the
same radius as the circular portion of the slot d, while the walls of the lower
part are parallel with the central line or axis of the shank. (See Fig. 6).
The stock is of the ordinary construction, except that it is provided upon the
under side with a rib h and tongue i. The distance between the shoulder (which
is of the ordinary construction) and the edge of the rib h is equal to the extreme
width of the strap, while the tongue i is centrally located between these two

page_text: The
points and is equal in width to the distance between the inner sides of the strap e.
The strap e may be provided with a shackle m, (see Figs. 1 and 3,) to which is
attached the cable n, or the cable may be bent directly upon the strap.
strap a is placed outside the shank a, and the shackle m being removed or the
cable being unbent the loop of the strap is brought down against the shank a in
the position shewn in Fig. 4, the circular portions of the apertures d and f
registering. The stock is now passed through the circular openings until the
shoulder comes in contact with the sides of the strap, the registering of the
lower portions of the holes d and ƒ permitting the passage of the rib h and
tongue. The strap is now turned upward, the shackle connected in the usual
manner, and the anchor is now ready for use. To remove the stock or change its
position to that shewn in Fig. 2, it is necessary to remove the shackle or cable
in order to permit the strap to assume the position shewn in Fig. 4, when and only
when the stock can be withdrawn or changed in position. The shackle m or cable
when connected with the loop of the strap, as shewn in Fig. 3, has the effect of
locking the device and prevents the strap e from lying sufficiently close to the
shank to permit the lower parts of the apertures d and f to register, which is
only possible when the upper portion or loop of the strap lies in contact with
the side of the shank, as shewn in Fig. 4.
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
તુ
1. In an anchor, the combination of a shank and a strap, both being provided
with a circular opening with elongated slots, said slots being capable of regis-
tering only when the loop of the strap is in contact with the shank, with a stock
provided with a shoulder and with a rib adapted to pass through the elongation
of the slots when registering, substantially as described.
2. In an anchor, the combination of a shank and a strap, each being provided
with a circular opening with elongated slots, said slots being capable of regis-
tering only when the loop of the strap is in contact with the shank, with a stock
provided with a shoulder and with a rib adapted to pass through the elongation
of the slots when registering, and a cable or shackle attached to the strap, sub-
stantially as described.
3. In an anchor, the combination of a shank with a strap with circular openings
and elongated slots, adapted to register in one position only, and a stock having a
rib suited to pass through the said elongations of the slots when registering,
together with a cable or shackle attached to the strap, substantially as described.
4. In an anchor, the combination of a shank and a strap, each having circular
openings with elongated slots adapted to register when the strap is in one posi-
tion only, a stock having a rib and tongue adapted to pass through the elonga-
itions of the slots when registering, together with a cable or shackle attached to
the strap, substantially as described.
Dated this 20th Jos
1000
EDWARDS AND CO.,
65 & 66, Chancery Lane, London, Agents for the Applicant.