Improvements in the Method of Supporting and Revolving Ventilator Cowls on Board Ship.
Year: 1899

page_text: Date of Application, 18th Oct., 1899
Complete Specification Left, 18th July, 1900-Accepted, 18th Oct., 1900
PROVISIONAL SPECIFICATION.
Improvements in the Method of Supporting and Revolving Ventilator
Cowls on Board Ship.
JAMES MAXTON, Consulting Engineer, 4, Ulster Street, Belfast, Cy Antrim,
Ireland, do hereby declare the nature of this invention to be as follows:-
The patent applied for consists in fixing an inverted footstep bearing at or
near the top of the ventilating cowl, carried from the coaming by suitable
brackets. The lower end of the cowl or barrel fits over the coaming of ventilator
and is free.
The whole of the weight of cowl rests upon the aforementioned bearing thereby
reducing to a minimum the resistance to revolution.
When of not easy access the cowl is manipulated by a rope or chain passing
round the barrel of cowl or a barrel attached to the cowl, over leading pulleys
to the manipulator, or by
a rod.
Noted this 16th day of October 1899
Improvements in the Method of Supporting and Revolving Ventilator
Cowls on Board Ship.
JAMES MAXION, 4, Ulster Street, Belfast, County Antrim, Ireland, Consulting
Engineer, 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 is an improvement for supporting and revolving ventilator
cowls. A A A are stays whose lower ends are secured near the head of the venti-
lator trunk and whose upper ends hold and secure a pivot hearing B as in Fig. 2
which supports the cowl head; this bearing may be of any convenient design.
In Fig. 1 the cowl is revolved by turning the handle C on the end of the vertical
shaft ), and the cowl is held in any position by a suitable locking arrangement.
In Fig. 2 the revolving of the cowl is effected by an external appliance to
A A A are the supporting
permit the ventilator trunk being used as a hoist.
stays and B the bearing. The cowl is turned by means of a rope fixed at C and
carried round the body of the cowl trunk, it is then led over the pulley D down
to the stokehold platform where its ends are made fast to a suitable cleat E or
other contrivance.

page_text: The arrangement shewn by Fig. 3 is to permit of large cowls being worked
from inside the ventilator.
The turning is effected by a rope or chain being secured at I to the pulley G,
which is attached to the shaft H that supports and is secured to the cowl head.
The bearings may be of an suitable type, and the supporting stays similar to
those shewn in Fig. 1 & 2. Fig. 4 shews plan of lead pulleys for turning
pulley G.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:
First. An improved method of supporting ventilator cowls on board ship by
carrying their weight upon suitable pivot, or other bearing or bearings, at or near
the axis of cowl, thereby reducing resistance to revolving, and dispensing with
the usual contrivances for carrying cowls upon bearings, at or near their periphery.
Second. An improved method of controlling and revolving ventilating cowls,
either by means of a central rod, or by means of ropes or chains passing round
the barrel of cowl, or a pulley attached to the cowl and led to any convenient or
suitable position for manipulation.
1 11 11 1741 1 of TuJ,- 1000