Improvements in and connected with "Chocks" or Supports for Ships' and other Boats..
Year: 1899

page_text: Date of Application, 23rd May, 1899
Complete Specification Left, 23rd Aug., 1899-Accepted, 30th Sept., 1899
PROVISIONAL SPECIFICATION:
b
Improvements in and connected with "Chocks" or Supports for Ships'
and other Boats..
I, ROBERT MELDRUM, of 298, Byars Road, Hillhead, Glasgow, Ships' Car-
penter, do hereby declare the 'nature of this invention to be as follows:
;
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chocks or
This invention relates to improvements in and connected with
supports for boats and it has for its object to provide a simple and efficient
arrangement. whereby tlie boat can be held firmly in position resting upon the
chocks" until such time as it is desired to lower the boat into the water when
the chocks can be moved down out of position: in such a manner as to. allow
the boat, suspended from the falls, to be freely swung out of place. When the
boat is resting in 'position upon the "chocks" its keel is supported by means of
a special device for the purpose.
In carrying out the invention I secure to the deck; or other place, two metal
frames one for each 'end of the boat and to each frame two:" chocks" are pivotted.
Each "chock" consists of a tee iron which is curved or bent and also swelled out
or thickened at its upper end. "Screwed to the tee iron is a wooden face piece
or block. Pivotally secured to the upper end of each "chock" by means of a
removable tapered pin is an inclined stay which at its lower end is pivotted in, a
bracket secured to 'the deck.. At the lower end of this stay, is an outwardly, bent
foot, whilst, at its upper end, there is a lug.or eye to which a slip link is secured.
-From the slip link a gripe is extended up to the catch on the gunwale of the
boat. 4449
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....
Working in each of the frames aforesaid,-which are. located immediately below
the keel of the boat, is a plunger or piston capable of being moved up and down
vertically: This plunger hastat its upper end a jaw which grips the keel and at
its lower end it can be supported in position by means of a tumbler or cam which
The tumbler can be raised and
is carried upon a pin' secured in the frame.
1.
lowered by means of a-lever, gearing, ropes,, or in other suitable manner:.
Each chock" is provided with a stop against which the supporting stay bears.
The plunger may be prevented from turning within the frame by means of a
feather and groove arrangement.
T.
With this device the boat can be firmly and securely held in position and,
when necessary, the "chocks" and plungers can be lowered down out of position
so as to leave the boat entirely free."
The invention' possesses the advantage that there is no complicated- mechanism
to get out of order.

page_text: Improvements in and connected with Chocks" or Supports for Ships'
and other Boats.
I, ROBERT MELDRUM, of 298, Byars Road, Hillhead, Glasgow, Ships' Car-
penter, 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:-
66
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$6
"
This invention relates to improvements in and connected with chocks or
supports for boats and it has for its object to provide a simple and efficient
arrangement whereby the boat can be held firmly in position resting upon the
chocks" until such time as it is desired to lower the boat into the water when
the chocks can be moved down out of position in such manner as to allow
the boat, suspended from the falls, to be freely swung out of place. When the
boat is resting in position upon the "chocks" its keel is supported by means of
a special device for the purpose.
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In order that my said invention may be properly understood I have hereunto
appended an explanatory sheet of drawings, whereon,
Fig. 1 is a view showing the boat a suspended from the falls d.
Fig. 2 is a view showing the boat a resting on the chocks.
Figs. 3 and 4 are detail views.
In carrying out the invention I secure to the deck or other place, two metal
frames or pedestals one for each end of the boat and to each frame two
"chocks" f, f, are pivotted. Each "chock" f consists of a tee iron (see
Fig. 3) which is curved or bent and also swelled out or thickened at its upper
end (Fig. 2.) Screwed to the tee iron is a wooden face piece or block m.
Pivotally secured to the upper end (Fig. 2) of each "chock" by means of a
removable tapered pin n is an inclined stay which, at its lower end, is pivotted
in a bracket & secured to the deck. At the lower end of this stay is an out-
wardly bent foot 1 whilst at its upper end there is a lug or eye with link
to which a slip link e is secured. From the slip link e a gripe 6 is extended up
to the catch on the gunwale of the boat.
Working in each of the frames g aforesaid, which are located immediately
below the keel of the boat, is a plunger or piston capable of being moved up
and down vertically. This plunger has, at its upper end, a jaw h¹ which grips
the keel, and, at its lower end, it can be supported in position by means of a
tumbler or cam o which is carried upon a pin o secured in the frame. The
tumbler can be raised and lowered by hand or by means of a lever or rope or
such like. When the tumbler is raised up (see Fig. 2) so as to support the
piston it can be locked in position by means of a fork q hinged to the frame g.
This fork can simply be moved into and out of the locking position by hand or
by the foot.
Each chock " is provided with a stop piece p against which the supporting
stay bears.
'
The plunger h may be prevented from turning within the frame by means
of a feather and groove arrangement.
With this device the boat can be firmly and securely held in position and,
when necessary, the "chocks" and plungers can be lowered down out of position
so as to leave the boat entirely free.
The invention possesses the advantage that there is no complicated mechanism
to get out of order.

page_text: Having now particularly described and ascertained the nature of my sau
invention and in what manner the same is to be performed I declare that what
I consider novel and desire to claim is:-
The construction or general arrangement and combination of parts of the
apparatus substantially as herein before described with reference to the drawings
annexed.
+000
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.