An Improved Device for Working Ships' Dead Lights.
Year: 1891

page_text: Date of Application, 19th Feb., 1891
Complete Specification Left, 7th Apr., 1891-Accepted, 9th May, 1891
PROVISIONAL SPECIFICATION.
An Improved Device for Working Ships' Dead Lights.
I, RICHARD DONALDSON of 17 South View, Heaton in the City and County of
Newcastle on Tyne, Caulker do hereby declare the nature of this invention to be as
follows:-
--
My invention relates to an improved device for working ships dead lights.
Hitherto it has been customary to hold these appliances open by means of a link
or hanger and eye-bolt and in consequence it has been usual to limit the angle of
opening to some particular position but by my invention I provide more compact
means to hold them open and at any angle.
To accomplish my object I form on the lug cast on the side light frame and on
which the dead light is hinged a rack into the teeth of which a paul mounted on
the dead light hinge bracket gears. By opening the dead light the paul slides over
the rack teeth but when the dead light has been opened to the desired extent it
falls into gear with the rack and thus holds the light..
To shut the light the paul is held out of gear by means of a knob or projection
suitably formed on or in connection with the paul and lowered in the ordinary way.
The invention above described may be readily applied to existing appliances of
a kindred nature.
Dated this 18th day of February 1891
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle on Tyne,
Patent Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Device for Working Ships' Dead Lights.
1, RICHARD DONALDSON of 17 South View, Heaton in the City and County of
Newcastle on Tyne, Caulker 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 :-
My invention relates to an improved device for working ships' dead lights.
Hitherto it has been customary to hold these appliances open by means of a link
or hanger and eye-bolt and in consequence it has been usual to limit the angle of
opening to some particular position but by my invention I provide more compact
means to hold them open and at any angle.
To accomplish my object I form on the lug cast on the side light frame and on
which the dead light is hinged a rack into the teeth of which a paul mounted on
the dead light hinge bracket gears. By opening the dead light the paul slides over
the rack teeth but when the dead light has been opened to the desired extent it
falls into gear with the rack and thus holds the light.
To shut the light the paul is held out of gear by means of a knob or projection
suitably formed on or in connection with the paul and lowered in the ordinary way.
The invention above described may be readily applied to existing appliances of
a kindred nature.
I will now fully describe my invention with reference to the accompanying
drawings in which
Figure 1 shows a front view of a side light frame with dead light in its shut
position.

page_text: Figure 2 shows a vertical section of a side light frame and side light with dead
light shown in an open position.
Figure 3 shows a plan view of the paul hereinafter again alluded to.
Like letters indicate like parts throughout the following description.
Referring to the drawings a is the side light frame and a the side light itself.
is the dead light hinged at a³ to a lug a' on the side light frame. On the lug
I form a rack a³ into the teeth of which the paul a mounted between the lugs a
of the dead light hinge bracket is arranged to gear as herein described.
When the dead light is shut as in Fig. 1 the paul lies in an inverted position
with its back against the chamfered edge e of the dead light and when the dead
light is required to be open the paul will hold it open in any position coinciding
with the relative positions of the rack teeth (see Fig. 2).
To shut the dead light the triggers may be held back thus keeping the paul
clear of the rack when the dead light will be free to shut.
Fig. 3 shows a convenient way of mounting the paul. In this arrangement to
take the paul out the dead light must be first unshipped by withdrawing pin p.
The paul can then be revolved in its bearing till the wing w thereon coincides with
a groove or slot formed in the side of the contiguous bearing a when by sliding w
into the groove the opposite journal of the paul will be withdrawn from its bearing
and thus enable the paul to be taken out.
Owing to the position of the paul with respect to the edge e of the dead light
and the underside of the lug at it is thus necessary to unship the dead light before
the paul arranged as just described and as shown in Fig. 3 can be taken out but I
lay no claim to any particular method of fixing the paul.
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
1. The combination with the lug on which the dead light is hinged of a rack
into the teeth of which a paul mounted on the dead light hinge bracket gears these
parts being arranged and adapted to operate substantially as and for the purpose
herein set forth.
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1
1 1001
A. CRAWHALL CHAPMAN,
3. St. Nicholas Buildings, Newcastle on
Tyne,
Patent Agent for Applicant.