Year: 1887

page_text: Date of Application, 18th Nov., 1887
Specification Accepted, 6th Jan., 1888
I, WILLIAM RODGER HAYES of 8 Derby Terrace, Harrow Lane, Poplar, London, E.
Carpenter 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 construction of the metallic side port or
scuttle ventilators used for the purpose of ventilating cabins and other portions of
ships. The object of said Invention is to facilitate the stowage of the ventilators in a
small space when not in use, and also to allow of their being readily shipped or
unshipped, and of their being securely fixed in position when in use.
In order that the device according to my Invention may be the better understood,
I have appended the accompanying sheet of drawings, in which Figure 1 represents
a side elevation of a collapsible ventilator according to my Invention, shewing the
interior of the concave structure, and Figure 2 represents a similar side elevation
shewing the exterior of the same. Figure 3 is an end elevation of the ventilator
represented in the position it assumes when open and in use, and Figure 4 shews an
end elevation of same closed, and ready for being stowed away. Similar letters of
reference are used to denote corresponding parts throughout the several views.
In carrying out my Invention I construct a semicylindrical shell of sheet metal
formed in two equal portions A, A¹, hinged at B. A stout metal frame G encloses
the semicylindrical shell A, A¹, before mentioned, and serves to strengthen the
structure and also to support the opening and closing gear, which consists of two
levers C and D jointed to the frame G at a and b. The lever C is pivotted by means
of a rivet or equivalent to the lever D which is placed inside the lever C, the latter
being cranked at f for such arrangement. A loop E is formed upon the lever C in
such a manner as to support a thumb screw F having a portion of the screw thread
removed from the point to allow of same entering a corresponding hole g formed in
the lever D. The frame of the semi cylindrical shell is preferably formed of metal
rod or thick wire, and said frame is cranked at c so that the rim of the scuttle or port
may fit within the recess thus formed when the ventilator is placed in position; a stop
piece d correspondingly curved to the cranked portion c, being fixed behind the hinge
for the same purpose.

page_text: The operation of placing the ventilator in position according to my Invention is
carried out as follows, that is to say ;-
The ventilator being closed, as represented at Figure 4, it is pushed into position
through the open scuttle or port, and the two parts or leaves A A³ of the shell are
opened out upon the hinge B. This brings the levers C and D into the position shown
at Figure 1 when the point of the thumb screw F may be made to engage with the
hole g which locks the ventilator firmly inside the rim of the scuttle or port, said rim
fitting within the recess or depression formed by the cranked frame at c and the
curved stop piece d.
When the ventilator is closed as shewn in Figure 4 it is easily stowed away, and
occupies but little space: also, the operation of unshipping and stowing in cases of
emergency when the ports or scuttles have to be closed quickly is facilitated, which
constitutes a great advantage over other forms of ventilators according to the usual
methods of construction.
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 :-
First: The improved ventilator or air shoot for application to the ports or scuttles
of ships, substantially as herein described and set forth.
Second-In a ventilator or air shoot constructed as above described, a semi-
cylindrical shell divided into two parts or leaves A A', said parts or leaves being
connected by a hinge and maintained when required in an open position by means of
two pivotted levers and D, and a thumb screw F substantially as herein described
and set forth.
171 1
T
1005
JAMES
STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.