CERTAIN IMPROVEMENTS IN ANCHORS
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said George Tyzack at the Office
of the Commissioners of Patents on the 15th December 1883.
GEORGE TYZACK Anchor Manufacturer of South Shields in the County of
Durham, "CERTAIN IMPROVEMENTS IN ANCHORS"
My Improvements consist of the substitution in lieu of a crown pin, of a curved
toggle bolt, (which said toggle bolt may be made out of iron, steel, or other
suitable material) and which is attached to the arm of the anchor in such a way
and manner as to work with the arni so that the holding and gripping power and
steadiness of the Anchor is thereby greatly increased and the curved ends of the
toggle bolt before mentioned being always turned downwards (when holding and
gripping) and lying at the same angle as the arm, it renders the fouling of Anchors
so constructed, by the cable, impossible. This arrangement also permits of the
Anchor being used either with or without a stock, and in the latter case may be
drawn partially or entirely into the hawspipe in vessels bows direct by the cable,
with the aid of either the windlass, capstan, or other appliance without the usual
and customary intervention of fish tackle, crane, or davits on the forepart of
vessels.
Thus saving the time usually spent in fishing and catting Anchor and thereby
materially lessening the danger to limbs and lives of seamen which is always
incurred in the usual mode of "letting go, and getting Anchor on board," especially
in a rough sea. This improved arrangement possesses all the good points of my
existing Patent for the construction and manufacture of Anchors, dated 1876
N° 3940 viz great and unusual strength, biting and holding power, great
compactness and non-fouling qualities which are not found in the usual type of
Anchors with two arms or flukes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Tyzack in the Patent Office on the 13th June 1884.
GEORGE TYZACK Anchor Manufacturer, of South Shields in the County of
Durham "CERTAIN IMPROVEMENTS IN ANCHORS
"
My improvements consist of the substitution in lieu of a crown pin, of a curved
toggle bolt (which said toggle bolt may be made out of iron, steel, or other suitable
material) and which is attached to the arm of the anchor in such a way and
manner as to work with the arm so that the holding and gripping power and
steadiness of the Anchor is thereby greatly increased, and the curved ends of the
toggle bolt before mentioned being always turned downwards (when holding and
gripping) and lying at the same angle as the arm, it renders the fouling of Anchors
so constructed, by the cable impossible. This arrangement also permits of the
Anchor being used either with or without a stock, and in the latter case may be
drawn partially into the haws-pipe in vessels bows direct by the cable, with the
aid of either the windlass, capstan, or other appliance without the usual and
customary intervention of fish tackle, crane, or davits on the forepart of vessels.
Thus saving the time usually spent in fishing and catting Anchor and thereby
lessening the danger to limbs and lives of seamen which is always incurred in the
usual mode of "letting go and getting Anchor on board," especially in a rough sea.
This improved arrangement possesses all the good points of my existing Patent for
the construction and manufacture of Anchors, dated 1876, N° 3940, viz; great and
unusual strength, biting, and holding power, great compactness and non-fouling
qualities which are not found in the usual type of Anchors with two arms or
flukes.
I will now proceed to refer to the accompanying Drawings hereunto annexed,
from which the nature of my said Invention, will be more clearly understood,
reference being made to the figures and letters marked thereon of which the same
letters are used to indicate the same parts.
DESCRIPTION OF DRAWINGS
Fig, 1, is a plan, and Fig. 2. is a part sectional side view of my improved
Anchor, the one side being shewn broken off for convenience of drawing, at the
swelled or distended portion. The sides or shank marked A, being formed in one
piece without a weld, (or in two pieces) are secured together by the pin or bolt
marked B, shewn in plan at Fig. 1, and in section at Fig. 2. which has a projection
or key formed upon. it marked C, or this said projection or key can be made
seperate, and secured by screws or otherwise to the bolt B, which is passed through
a suitable aperture, or recess, formed in the side of the shank marked A.
When the said bolt is inserted in the way described it is turned half way round
as shewn, the projection or key marked C, being then in a line, opposite as it were,
and parallel with the recess formed in the one side of the shank, (shewn in dotted
lines at G in plan, and in side view at Fig, 2.) through which it has passed, and the
pin or bolt is made secure by the washers marked D and E, (in conjunction with
the pins and cotters in the ordinary way) the washer marked D having a small
projection formed on its underside marked F, this projection is inserted in the
corresponding shaped orifice before mentioned marked Ġ, in the side of the shank A
previously referred to; the object of this being to prevent the bolt B, from working
loose or turning round, as it is thus securely fixed and kept rigidly in position,
screwed nuts however, or other means may be used, instead of washers and pins,
for securing the ends of the bolt B. H is the arm or fluke of the Anchor. The
part marked I is a curved toggle bolt, in preference to being straight, and is
adopted in preference to that known as a crown pin, this said toggle bolt is also
provided with a projection or key, (shewn also in dotted lines at Fig. 1, and in

page_text: elevation at Fig, 2,) marked J, as in the case of the pin or bolt B, previously
described, and is also passed through the side of the shank A, with its key-way
marked N, (shewn in dotted lines at Figs, 1 and 2,) and also through the arm or
fluke H of the anchor; therefore by the projection or key of the toggle bolt being
in a corresponding recess formed in the said arm or fluke of the Anchor, it is
evident that the said toggle bolt must always work with the arm or fluke, and be
at all times parallel and lineable with it. In Fig, 2, it is clearly seen that the arm
or fluke, is detained and prevented from swinging too far by the bolt B. The butt
end of the arm or fluke being curved or recessed as shewn, so that it can abutt and
bear against the bolt B previously described. Thus it is evident that when the
arm or fluke falls down between the sides of the shank A, it will be securely held
and detained by the pin or bolt B, which is secured to the sides or shank in the
same axis line as the arm or fluke, so that when the said arm or fluke is brought
round on either side of the shank, until its curved or recessed portion comes in
contact with the bolt B, it will be kept securely in position, and thereby giving the
required angle to the arm or fluke, in relation to the position of the sides or
shank A, as shewn, the angle made being such a one that will ensure a good biting
and very firm detention in the ground, of the embedded fluke or arm.
Fig, 3, is merely a section taken through the dotted line l, m, of the arm or
fluke, as seen in plan at Fig, 1,. Figs 4, 5, 6, and 7 are merely sectional views of
the sides or shank, taken through the dotted lines opposite them as shewn. The
part marked K secured to the end of the shank, is the shackle to which the cable
is attached, shewn in plan at Fig. 1, and in side view at Fig. 2. Anchors so
constructed, have an increased power and strength imparted to their holding and
gripping qualities, and also great compactness. The curved ends of the toggle bolt
being always turned downwards, when the Anchor is holding, and lying at the
same angle as the arm or fluke, the fouling of Anchors by the cable is impossible.
They have also the advantage of being used with or without a stock, and in the
latter case, readily afford the means of being drawn partially into the ordinary
shaped hawspipe, if so required, by means of the cable direct; thus saving a great
amount of trouble and time, and preventing the vessels bows from being damaged,
which often occurs when letting go or heaving up Anchors at sea.
Having thus described the nature of my Invention, and the manner of giving
effect to the same, I wish it to be particularly understood, that I do not confine
myself to the exact details here given, or to the outline, or size, or strength, of the
various parts, shewn on the accompanying drawings, as the same may be diversified,
without departing from the object or spirit of my Invention.
But what I do claim as of my Invention in Anchors, is the substitution in lieu
of a crown pin, of a curved toggle bolt, connected and working with the arm or
fluke, for effecting the object and purpose of my said Invention as herein described
and illustrated.
In Witness whereof, I the said George Tyzack have hereunto set my hand and
seal this fifth day of June in the year of our Lord one thousand eight hundred
and eighty four 1884.
Witness,
ALFRED PERRY Assoc. M. Inst. C.E.
Patent Agent,
Handsworth
Birmingham.
GEORGE TYZACK (L.S.)