Improvements in Rudder Brakes.
Year: 1898

page_text: Date of Application, 12th May, 1898
Complete Specification Left, 8th Feb., 1899-Accepted, 11th Mar., 1899
Improvements in Rudder Brakes.
I, WILLIAM HASTIE, of John Hastie and Company, Limited, Engineers, of the
Kilblain Engine Works, Greenock, in the County of Renfrew, North Britain, do
hereby declare the nature of this invention to be as follows, that is to say:—
My said invention relates to brakes such as are applied to rudders to prevent
violent movements or to hold a rudder in a fixed position whilst the steering
gear is being changed from steam-driven mechanism to hand-steering mechanism
or vice-versa; and it comprises improvements in constructive details.
In carrying out my invention a caststeel or castiron quadrant or sector is fixed
on the rudder stock, and a brake block of wood is arranged so as when required
to be capable of being pressed against the rim of the quadrant or sector, by
means of a lever or screw or equivalent. The rim of the quadrant or sector is
grooved and counterpart grooves are formed in the bearing surface of the brake
block. To prevent the surfaces of the grooves from becoming smooth or polished
and the holding power thereby diminished, the ridges between the grooves of
the quadrant or sector are formed with indentations as though cut across at right
angles or angularly, such indentations being formed by a suitable formation of
the mould in which the piece is cast, or by cutting the cast piece.
EDMUND HUNT.
Applicant's Agent.
Improvements in Kudder Brakes.
I, WILLIAM HASTIE, of John Hastie and Company, Limited, Engineers, of the
Kilblain Engine Works, Greenock, in the County of Renfrew, North Britain, da
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, that is to say:-
-
My said invention relates to brakes such as are applied to rudders to prevent
violent movements or to hold a rudder in a fixed position whilst the steering
gear is being changed from steam-driven mechanism to hand-steering mechanism
or vice-versa: and it comprises improvements in constructive details.
And in order that my said invention and the manner of performing the same
may be properly understood. I hereunto append a sheet of explanatory drawings
to be hereinafter referred to in describing my improvements
Figures, 1, and 2, of the accompanying drawings, are respectively a plan,
and a side elevation, partly in section, of a rudder brake provided with my im-
provements. Figure, 3, is a back elevation of a detail in connection therewith.
CD9727

page_text: Figure, 4, is a similar view of another modification of the same detail. In these
drawings the same reference letters are used to mark the same or like parts
wherever they are repeated.
In carrying out my invention a caststeel or castiron quadrant or sector, A, is
fixed by screwed bolts, B, onto flanged parts, C, of the arms, D, fixed on the
rudder stock, E. A curved lever, F, fitted with a brake block of wood, G, is
centered at one end on a pin, H, in a bracket, J, fixed behind the quadrant, A.
The curved lever, F, is fitted at the other end with an internally screwed swivel-
ling piece, K, through which works a handled screwed spindle. L. mounted in
a bracket, M. The turning of the screwed spindle, L, in the nut, K, thus gives
movement to the lever, F, and thereby enables the brake block of wood, G. to
be pressed against, or released from the rim of the quadrant or sector, A, as
required. The rim of the quadrant, A, is formed with grooves, N, and counter-
part grooves, P. are formed in the bearing surface of the brake block, G. To
prevent the surfaces of the grooves from becoming smooth or polished and the
holding power thereby diminished the ridges between the grooves, N, of the
quadrant, A, are formed with indentations, Q, as though cut across at right
angles, as shown in Figure. 3, or angularly, as shown in Figure, 4, such indenta-
tions being formed by a suitable formation of the mould in which the quadrant
piece is cast, or simply by cutting the cast piece.
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-
-
Improvements in rudder brakes, in which a grooved brake block of wood is
arranged to act against a similarly grooved quadrant or sector fixed to the rudder
stock, the ridges between the grooves of the quadrant being formed with indenta-
tions substantially as and for the purposes herein before described with reference
to the accompanying drawings.
Dated this Seventh day of February 1899.
EDMUND HUNT.
Applicant's Agent.