AN IMPROVED DOUBLE-ARM ANCHOR
Year: 1884

page_text: I, CHARLES BOYCE of No 3 Park Lane West in the parish of Tipton in the
County of Stafford Anchor-Smith do hereby declare the nature of my invention
for AN IMPROVED DOUBLE-ARM ANCHOR to be as follows:-
This Anchor has its two arms and two toggles made in one solid piece, the
toggles being at right-angles to the arms; the arms being fitted into the shank in
such a manner as to enable both arms to enter the ground at the same time. The
Toggles are formed one on each side of the arms, and have a direct bearing upon
the throat of the shank in one case, and upon a toggle stop block in the other case,
both toggles having a bearing at one and the same time. The back of each toggle
is formed flat so that the ship's bottom would not be injured in case of the vessel
lying upon its anchor The Shank is made in two equal parts, (being divided
longitudinaly,) and are bolted together in such a manner, as to be readily
separated if required, thus allowing the Anchor to be taken to pieces and stowed
away in a small compass. The two halves of the shank are each made in one solid
piece, without weld or joint, and are so formed at the head or jaws as to admit of
the arms passing through them, and to work either way as required. At the
bottom of the shank a toggle stop-block is fitted for the purpose of receiving the
strain from the back of one toggle, while the front of the other toggle has a bearing
upon a recess formed in the throat of the shank. A tail-piece is continued from
the toggle stop-block for the purpose of carrying a buoy shackle. An oblong
stock-plate is fitted on the shank, instead of the usual stock. The object of this
stock-plate being to add to the holding powers of the anchor; and also by taking
up less room when the anchor is not in use, adds to the facilities for stowing the
anchor. The bolt connecting the shackle to the Anchor passes through the two
halves of the shank, as does also the key for securing the stock-plate in its place.
Dated this Twenty-seventh day of October, in the year of our Lord One

page_text: COMPLETE SPECIFICATION.
İ, 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
IMPROVEMENTS IN SHIPS' 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 accompanying drawings forming part of this
Specification :-
"
My invention relates to improvements in Anchors, and has for its object to
provide an Anchor which is simple in construction; does not require an Anchor
Stock; has increased holding qualities; is provided with a stock plate instead of
the usual anchor stock; (which stock plate adds greatly to the holding qualities of
the Anchor) has two arms and two tripping toggles or supplementary arms made
in one solid piece, the arms being fitted into the Shank in such a manner as to
allow both palms or flukes, and one of the tripping toggles, or supplementary arms
to enter the ground at the same time, and irrespective of the direction in which
the Anchor falls. The said Toggles being formed in such a manner as to act as
supplementary arms, inasmuch as one or other of the said toggles or supplementary
arms will enter the ground at the same time as the two principal arms; thus
making the holding qualities of my anchor almost equal to three ordinary Anchors.
The said Anchor can be cast in steel or made of wrought iron, and can also be
readily taken to pieces and stowed away in a small space.
My invention is illustrated in the accompanying drawings, in which Figure 1 is
a side elevation of my improved Double Arm Anchor, shown in a position for
entering the ground. Figure 2 is a plan of the said Anchor. Figure 4 is a side
elevation of one of the halves of the Shank, and Figure 3 is a plan of the saine.
Figure 5 is a side elevation of the Principal Arms and Toggles or supplementary
Arms; and Figure 6 is a plan of the stock plate.
In carrying my invention into practice I form my Improved Double Arm Anchor,
either in steel or wrought iron, in 4 principal parts, namely the two halves of the
shank D (with jaws E) Figures 3 & 4, which are each made in one solid piece; the
two Principal Arms G, and two Tripping Toggles or Supplementary Arms F
(Figures 1. 2 & 5) all being made in one solid piece; and the Stock Plate C
Figure 6. The two Tripping Toggles or Supplementary Arms are formed at right
angles to the Principal Arns. The two halves of the Shank D-with jaws E-
(Figures 3 & 4) are made in made in two exactly similar parts, which are bolted
together by means of the bolt M, Shackle Bolt A¹, & Tail Piece Bolt N, in such a
manner as to allow the Anchor to be readily taken to pieces and stowed away in
a very small space. Each half of the Shank is provided with a circular hole Q
(Figure 3) through the jaws E, into which the Arms G fit in such a manner as to
enable the Arms to act on a revolving or oscillatory principle as shewn by the
dotted lines in Figure 1, and thus allow the two Principal Arms, and one of
the Tripping Toggles or Supplementary Arms to enter the ground at one & the
Fame time, and quite irrespective of the manner in which the Anchor falls,

page_text: The Tripping Toggles or Supplementary Arms F (Figures 1. 2 & 5) are formed
one on each side of the principal Arms, and work in a space provided between the
two jaws E of the Shank D (Figure 2) The said Tripping Toggles or Supplementary
Arms have each a direct bearing at one and the same time, for, while the front
portion of one Toggle is pressing against a recess F¹ (Figures 2. 3 & 4) formed in
the throat of the shank, the back portion of the other Toggle has a bearing upon a
Toggle Stop Block K (Figure 2) which is bolted between the jaws E of the
Shank D.
The back of each Tripping Toggle or Supplementary Arm is made with a flat
surface, so that in the event of a ship grounding upon her anchor, her bottom
would not be injured. A Tail Piece L (Figures 1 & 2) is continued from the Toggle
Stop Block K, for the purpose of carrying a buoy shackle I (Figures 1 & 2) to
facilitate the fishing of the Anchor.
A Stock Plate C (Figure 6) of an oblong or square shape (or any other shape
found to be necessary) is fitted on the square of the Shank as shewn in Figures 1 & 2,
instead of the usual Anchor Stock, and is secured in its place by means of a Stock
Plate Key B (Figures 1 & 2) which passes through the two halves of the Shank
immediately above the top surface of the stock plate, the bottom surface of the said
stock plate being supported by two shoulders P (Figures 1. 2. 3 & 4) formed on the
square of each half of the shank D. The object of the said stock plate being to add
to the holding powers of the Anchor when in use, and also by taking up less room
than the ordinary stock when the Anchor is aboard, very much facilitates the
stowing of the Anchor. If required the said Stock Plate can be removed from the
Anchor and a Collar substituted and so allow the Shank of the Anchor to pass
through the Hawse Pipe of the vessel; such alteration would not materially affect
the working of the Anchor.
The Shackle Bolt A' passes through the two halves of the Shank D and secures
the Shackle A (Figures 1 & 2) in its place at the end of the square of the shank,
and also assists in binding together the two halves of the Shank.
It will be seen by the above description that in whichever direction my Improved
Double Arm Anchor falls it is equally effective.
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
First The construction of an Improved Doublo Arm Anchor that can be cast in
steel or made in wrought iron without weld or joint, substantially as herinbefore
described and illustrated in the accompanying drawings.
Second The construction of an Improved Double Arım Anchor, the Shank of
which is made in two equal and exactly similar parts, and the whole being so fitted
together as to be readily taken to pieces and stowed away in a small space when
not in use, substantially as herinbefore described with reference to Figures 1. 2. 3.
4. 5 & 6 of the accompanying drawings.
Third The construction of an Improved Double Arm Anchor, the two Principal
Arms of which are allowed to act on a revolving or oscillatory principle, and are so
arranged that both arms may enter the ground at the same time. The said
Principal Arms carrying two Tripping Toggles, all made in one solid piece, such
Tripping Toggles acting as supplementary Arms when the Anchor is in use, thus
adding to the holding qualities of the Anchor, substantially as herinbefore
described with reference to Figures 1. 2 & 5 of the accompanying drawings.
Fourth The construction of a Stock Plate which fits ou the end of the square of
the Shauk, instead of the usual Anchor Stock, which plate adds greatly to the
holding qualities of the Anchor and takes up less room when the Anchor is aboard,
and also facilitates the stowing away of the Anchor, substantially as herinbefore
described with reference to Figures 1. 2 & 6 of the accompanying drawings.
Fifth The general construction of an Improved Double Arm Anchor with Shank
in two equal and exactly similar parts, and two principal arms with two Tripping

page_text: Toggles or Supplementary Arms all in one piece, and a Stock Plate (removeable if
required) instead of the usual Anchor Stock, substantially as hereinbefore described
& illustrated by the accompanying drawings.