Improvements in Ventilators or Downdraught Preventers.
Year: 1893

page_text: Date of Application, 2nd Feb., 1893
Complete Specification Left, 2nd Nov., 1893-Accepted, 30th Dec., 1893
PROVISIONAL SPECIFICATION.
". h
Improvements in Ventilators or Downdraught Preventers.
ALBERT CHARles Harris, Photographer, Prince of Wales, Willesden Lane,
Kilburn N.W. ROBERT HARRIS, no calling, Prince of Wales, Willesden Lane,
Kilburn N.W. ALBERT THOMAS HARRIS, Merchant, 4 Totness Terrace,
Wembley Middlesex, BERNARD ELEAZAR CLARKE, Sheet Metal Worker,
19 Iverson Road, Brondesbury N.W. do hereby declare the nature of this inven-
tion to be as follows:-
It relates to chimney tops or ventilators for smoky chimneys, buildings or any
space requiring ventilation,
Wo use a shaft or tube having its outer end expanded until it assumes a shape
usually termed bell mouth, "see Figure 1 in accompanying sheet of drawings
over the top of this we fix a cap in shape similar to a bell "see Figure II" we
then fix a short length of tube "somewhat wider in diameter than the widest part
of the bell shaped cap" round the whole in a manner shewn in Figure III.
By this arrangement we not only prevent any downward draught but create
an upward draught and in the case of a chimney it is easily cleaned simultaneously
with it.
Dated this 1st day of February 1893.
ALBERT CHARLES HARRIS.
ROBERT HARRIS.
ALBERT THOMAS HARRIS.
BERNARD ELEAZAR CLARKE.
COMPLETE SPECIFICATION.
Improvements in Ventilators or Downdraught Preventers.
ALBERT CHARLES HARRIS, Photographer, Prince of Wales, Willesden Lane,
Kilburn N.W. ROBERT HARRIS no calling, Prince of Wales Willesden Lane
Kilburn N.W. ALBERT THOMAS HARRIS Merchant, 4 Totness Terrace
Wembley Middlesex, BERNARD ELEAZAR CLARKE Metal Plate Worker,
157 Loveridge Road Brondesbury N.W. 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 improvements in chimney or ventilating heads or caps.
According to our invention we provide for the improvements hereinbefore:
mentioned in a manner shown by the accompanying drawings in which
Fig. I is a shaft or socket expanded at its outer end to a bell shape.
Fig. II shows position of bell-shaped cap.
Fig. 111 is an elevation of the improved chimney or ventilating head or cap.
The outer end of a shaft or socket A we expand to a bell shape B Fig. I
over this we fix a bell shaped cap with its larger end facing the expanded end
of the shaft or socket in such a manner as to leave an opening between the socket-
and the cap as shown in Fig. II C and D.
We then fix a short piece of tube round the opening thus made somewhat wider
in diameter than the widest part of the bell-shaped oan Fie. III.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
olaim is :-
In a chimney or ventilating head or cap the formation of the deflectors C.
and D Fig. II substantially as described and shown in the accompanying
drawings.
Dated this First day of November 1909
ALBERT CHARLES HARRIS.
HARRIS.
ROBERT
ALBERT THOMAS HARRIS.
B. E. CLARKE: