A New or Improved Ventilator for Helmets and other Head Coverings.
Year: 1899

page_text: Date or Application, 14th Jan., 1899
Complete Specification Left, 29th Sept., 1899-Accepted, 4th Nov., 1899
PROVISIONAL SPECIFICATION.
A New or Improved Ventilator for Helmets and other Head
Coverings.
I, ISAAC GOLDMAN, of Hillary Street, Woodhouse Lane, Leeds, in the County
of York, Hat and Cap Maker, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to construct a ventilator for helmets and other
head coverings, hereinafter termed helmets, in such a manner that the air
within the helmet is continually being changed, thus keeping the head well
ventilated.
According to my invention I construct a circular framework which is fitted
in the material of the helmet, and the said framework carries in its centre a rotary
fan which is mounted on a spindle so as to rotate freely on its axis. The fan
itself is in the same plane as the external surface of the helmet, so that outside
currents of air rotate the fan and thus cause it to draw the heated air from the
interior of the helmet.
Suitable guards could be employed to protect the fan from injury both inside
and outside, and the said guards would be formed with apertures for the free
entry and exit of the air.
Dated this 14th dov f
1000
BREWER & SON,
London and Leeds, Agents for the Applicant.
A New or Improved Ventilator for Helmets and other Head
Coverings.
I, ISAAC GOLDMAN, of Hillary Street, Woodhouse Lane, Leeds, in the County
of York, Hat and Cap Maker, 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:-
The object of this invention is to construct a ventilator for helmets and other
head coverings, hereinafter termed helmets, in such a manner that the air
within the helmet is continually being changed, thus keeping the head well
ventilated.
In order that my invention may be clearly understood I will proceed to
describe the same with reference to the accompanying drawing, in which

page_text: Figure 1 is a transverse section of a helmet constructed according to my inven-
tion, and Figure 2 is a part plan of the same. Similar letters of reference refer
to like parts in both figures.
According to my invention, I construct a framework A composed of arms
carrying central bearings B and C and attached to the helmet by a circular
rim A. The bearings B and C carry a spindle D between them and the said
spindle D carries a rotary fan E which is free to rotate on its axis. The fan E
is situated in about the same plane as the top of the helmet, so that outside
currents of air cause the fan E to rotate and thus draw and expel the heated air
from the interior of the helmet.
The fan E is provided with a suitable guard G which is connected to the
exterior of the helmet by means of a screw H connected to the bearing B. The
base of the helmet is shewn with a ventilating band K whereby a continued
current of air may enter the helmet and be led off by way of the fan E after
passing over the head of the wearer.
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 fan E carried in a suitable framework mounted in the upper portion
of a hat, substantially as and for the purposes set forth.
2. The combination of the frame A, bearings B and C, spindle D, fan E and
rim A¹, substantially as and for the purposes set forth.
3. The general arrangement, construction and combination of the various parts
forming my ventilator for helmets and other head coverings, substantially as
and for the purposes set forth.
Dated this 29th day of September A.D. 1899
BREWER & SON,
London and Leeds, Agents for the Applicant.