Improvements in Hatchway Covers, and Means for Securing same.
Year: 1895

page_text: Date of Application, 14th Sept., 1895
Complete Specification Left, 12 h June, 1896-Accepted, 18th July,
1896
PROVISIONAL SPECIFICATION.
Communicated from abroad by F. KODOLITSCH, Engineer, of Frieste, in the
Empire of Austria.]
Improvements in Hatchway Covers, and Means for Securing same.
1, JAMES MARR of North Sands Shipbuilding Yard Sunderland in the County
of Durham, Shipbuilder do hereby declare the nature of this invention to be as
follows:-
This invention relates to hatchway covers and means for securing same when in
position and the object is to so construct these appliances and secure same that the
wooden covers and tarpaulins hitherto necessary for watertightness may be
abolished.
According to my improvements in hatchway covers I employ for same a series
of steel or metal plates one side or edge of each plate being flanged upwards to or
to about a right angle while the opposite edge is formed with a double flange in
the form of an inverted U more or less. On assembling the various plates the
plain upward flange of one plate is fitted under and covered by the n-shaped
Hange on the next adjoining plate the whole series of flange jointed plates thus
forming a surface with transverse raised overlapped joints which for all practical
purposes are watertight in themselves and do not necessitate the provision of a
tarpaulin or supplemental covering.
Instead of providing flanges of different section on each plate I may flange both
sides of one plate somewhat vertically and Hange the sides of the next plate to a
-shape the result being the same as before described.
The plates are and may be strengthened by angle bars fixed at intervals parallel
with the joints while the plate ends at the coamings are flanged over to correspond
with any section of coaming or part thereof.
Handles may be fitted for conveniently manipulating the cover.
For securing the plates forming the hatch cover when in position on the
hatchway pivot on the coaming plate a hand lever and to it at a short distance
below its pivotal point I pivot the open ends of a stirrup or tumbler the closed end
of which is arranged to engage a hook which may be formed on a strap fixed to
the cover.
To disengage the tumbler the hand lever is pulled outwards and due to the
connection aforesaid the stirrup is drawn forward and eventually its bar is raised
out of engagement with the fixed hook.
A staple may be suitably attached to the hatch plate for enabling the hand lever
to be locked as desired.
As many of these fastenings may be fitted to the hatch as are required and
I would have it understood that this mode of fastening may be applied to other
descriptions of hatch covers.
Dated this 13th day of September 1895.
A. CRAWHALL CHAPMAN,
Newcastle-on-Tyne, Patent Agent.

page_text: I, JAMES MARR of North Sands Shipbuilding Yard Sunderland in the County
of Durham, Shipbuilder, 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 invention relates to hatchway covers and means for securing same when in
position and the object is to so construct these appliances and secure them that
the worden covers and tarpaulins hitherto necessary for watertightness may be
abolished.
According to my improvements in hatchway covers 1 employ as such a series of
steel or metal plates one side or edge of each plate being flanged upwards to or to
about a right angle while the opposite edge is formed with a double flange in the
form of an inverted U more or less. On assembling the various plates the plain
upward flange of one plate is fitted under and covered by the n-shaped flange on
the next adjoining plate the whole series of flange jointed plates thus forming a
surface with transverse raised overlapped joints which for all practical purposes
are watertight in themselves and do not necessitate the provision of a tarpaulin or
supplemental covering.
Instead of providing flanges of different section on each plate I may flange both
sides of one plate somewhat vertically and flange the sides of the next plate to a
-shape the result being the same as before described.
The plates are or may be strengthened by angle bars fixed at intervals parallel
with the joints while the plate ends at the coamings are flanged over to correspond
with any section of coaming or part thereof.
Handles may be fitted for conveniently manipulating the cover.
For securing the plates forming the hatch cover when in position on the hatchway
1 pivot on the coaming plate a hand lever and to it at a short distance below its
pivotal point I pivot the open ends of a stirrup or tumbler the closed end of which
is arranged to engage a hook which may be formed on a strap fixed to the cover.
I will more fully describe my invention with reference to the accompanying
drawings in which Figures 1, 2 and 3 show respectively a plan view, a longitudinal
sectional view and an end view of a hatchway cover constructed and secured according
to my invention, Figures 4 and 5 showing enlarged end and front views of the
mole of securing and in the following description like marks of reference indicate
like parts.
Referring to the drawings, 6 are the hatch coamings and 7 are the improved
steel hatchway covers having their sides Hanged disposed and arranged to fit over
each other as aud for the purposes herein described. 8 are the strengthening angle
bars referred to and 9 the lifting handles.
For securing the improved hatch cover plates pivot at 10 on the coaming
plate a hand lever 11 and to it at 121 pivot the open ends of a stirrup 13, the
closed end of which is arranged to engage a hook 14 formed for example on a
strap 15 fixed to the cover.
To disengage the stirrup or tumbler the hand lever is pulled outwards and due
to the connection aforesaid the stirrup is drawn forward and eventually its bar is
raised out of engagement with the fixed hook.
A staple 16 is or may be secured to the hatch plate as shown to enable the
hand lever to be locked as "desired.
As many of these fastenings may be fitted to the hatch as are required and I would
have it understood that this mode of fastening inay be applied to other descriptions
of hatch covers.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved metallic hatchway covers formed and arranged for use
substantially as herein set forth.
2. The improved means for securing the hatchway covers in position substantially
as herein set forth.
3. The improvements in hatchway covers and means for securing same
substantially as specified and shown in the drawings.
Dated this 11th day of June 1896.
A. CRAWHALL CHAPMAN,
3 St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.