An Improved Anchor.
Year: 1890

page_text: Date of Application, 4th Dec., 190
Complete Specification Left, 8th Sept., 1891-Accepted, 17th Oct., 1891
PROVISIONAL SPECIFICATION.
An Improved Anchor.
We JAMES THOMAS STABBACK of 159 Spring Street, Melbourne in the
Colony of Victoria, Dentist, and FRANCIS CORNELIUS MITCHELL of No. 6
Garraway's Queen's Walk Melbourne aforesaid Accountant and Draughtsman
do hereby declare the nature of this invention to be as follows:-
This improved anchor consists of a bifurcated or double shank preferably made
of iron of oval section, and provided with a ring in front to which the cable may
be attached, whilst its rear ends are formed with holes in which projecting pins or
trunnions on the arm of the anchor fit easily. This said bifurcated shank is pre-
ferably made about one-third or three-fifths as wide at its rear ends as it is long,
whilst the arm which is pivotted between its rear ends with the point towards the
front is free to swing to an angle of about forty five degrees on either side of said
shank when it is restrained from any further movement by two stops on said arm
coming into contact with said shank. In a similar manner another pair of stops
on the opposite side of said arm come into operation to prevent its being swung
past the same limit in the opposite direction. The pivotted arm of the anchor
which is in the shape (somewhat) of the letter T and from the extreme sides of
which the trunnions project is also formed with two wide projections one above and
the other below in order to press or cant the point or end of said arm down into the
sand or mud at the bottom of the river or sea. Said arm is moreover provided
with a ring or eyebolt at its hindmost or pivotted end in order that a rope or
chain may be attached thereto so as to enable the anchor to be "tripped" when
required.
Dated this Twenty-fourth day of October One thousand eight hundred and
JAMES T. STABBACK.
F. C. MITCHELL.
An Improved Anchor.
We, JAMES THOMAS STABBACK of No. 159 Spring Street Melbourne in the
Colony of Victoria, Dentist, and FRANCIS CORNELIUS MITCHELL, of No. 6
Garraway's, Queen's Walk, Melbourne aforesaid, Accountant and Draughtsman,
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 :-
This improved anchor consists of a bifurcated or double shank having a ring at
its upper or forward end to which the cable may be made fast and having holes at
its lower and rearward ends to receive projecting pins or trunnions on the arm of
the anchor. This said bifurcated shank is preferably made about one-third to
three-fifths as wide at its rear or lower end as it is long, whilst the arm which is
pivotted in the holes in its rear or lower ends with its point towards the upper or
forward end of the shank is free to swing through an angle of about 45° on either
side of said shank. It is provided with stops which are arranged to come in
contact with said shank when the arm has reached the limit of its movement on
either side. Said arm is also provided with two wide projections, one on either
side, near the lower or rearward end thereof, so that said arm will be pressed or