Year: 1887

page_text: Date of Application, 9th Sept., 1887.
Specification Accepted, 11th Oct., 1887.
We GEORGE HARTSHORNE and GEORGE FREDERICK SIMMS of the firm of George
Hartshorne & Co. of Netherton in the County of Worcester, Anchor and Chain Cable
Manufacturers do hereby declare the nature of our said invention and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statement :-
Our invention has for its object improvements in anchors which by their particular
form combine great strength with lightness and simplicity of construction and also
great certainty of action when in use.
In order that our invention may be thoroughly understood we have appended
hereunto a double sheet of drawings upon which we have illustrated our anchor and
by which the invention may be far more easily understood than by explanation only
as small differences in form produce large differences in the results obtained in practice
at any rate in the case of anchors.
Figure 1 is a side elevation of the anchor showing in elevation the shank A and
arm B and head E.
Figure 2 is a front elevation showing the shank A and both the arms B and B'
united to each other by the specially formed head or bridge E.
Figure 3 is a broken off section on the line C. D which shows the particular
formation of the shoulders a¹ a¹ on the shank A and the corresponding portion e¹ e¹ of
the head E which are very important.
Figures 4, 5 and 6 show various modifications in the formation of the head and
bridge piece.
Figure 7 illustrates the probable position of the anchor when it arrives upon the
bottom and just as it commences to enter the bottom.
Figure 8 illustrates the anchor when it has taken firm hold and shows the particular
formation of the shoulders a¹ and e¹ as they are when in action.
In the section Figure 3 the particular formation of the thick part of the shank A
and head E are seen and it will be noticed that while a sufficient shoulder is formed
apon the shank on both sides at a' and upon the head at e¹ to correspond therewith

page_text: that there is no inducement for the lodgement of stones or other matter which would.
prevent the arms B and B' coming into proper action as shewn by Figure 8 but on
the contrary the formation of both shoulders are such as to tend to expel any obstacle
or matter from that part. This has been a serious fault in many previous attempts in
the construction of anchors.
It will also be noticed in each of the sectional Figures 3. 4. 5 and 6 that when the
ends of the head trip the anchor into action that they are so formed with the
internal hollow e as to immediately take hold of the bottom to force the points of
the arms down which is important and yet the formation of the outer portion of the
head is such as to ensure sufficient strength without needless metal and the best form
for inducing immediate action without loss of time. The section of metal at e* shows
less in Figure 3 than through the shoulders e¹ and this is quite correct because at e
the sections of the arms themselves come in to increase the strength of the head. The
the
points e¹ may be made sharper as shown in Figures 4, 5 and 6 and the metal upon
head may be economised as shown by the flats at Figure 5 or even by the hollows
as shown at e Figure 6 without sacrificing useful strength.
It will thus be seen that
formidable tripping ends are obtained by these particular shapes with a minimum
weight of metal beyond the centre or pivot pin N which is important because the
points 663 of the arms work better when their weight preponderates considerably over
the head. Besides this the arms B and B are perfectly united by the bridge or head
in a most economical and effective manner and so that the whole may be cast in steel
or other metal or forged without great expense. The gradual swells a³ upon the
shank sustain the compression upon the shoulders a¹ without detracting from the
strength of the shank which is the case in many previous attempts where sudden
shoulders are needful. These anchors may be used with or without a stock but we
prefer to make the shackle K flat as shown. In the case of a stock being used a
suitable enlargement is formed upon the shank to receive the hole for that purpose.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we declare that what we claim is :-
The improvements in anchors having a tripping head E and rounded shoulders e¹
and a substantially as herein set forth and shown upon the drawings.
Dated this 8th day of September 1887
GEORGE BARKER,
77, Colmore Row, Birmingham,
Agent for Applicants.