Improvements in Chimney or Ventilating Caps.
Year: 1889

page_text: Date of Application, 7th Aug., 1889
Complete Specification Left, 7th May, 1890-Accepted, 7th June, 1890
PROVISIONAL SPECIFICATION.
Improvements in Chimney or Ventilating Caps.
We JOSEPH MULLIGAN, Tin Plate Worker, of No. 143 Pond Street, Sheffield in
the County of York, and CHARLES SWINDELL, Bank Cashier, of No. 12 Kenwood
Road, Sheffield, likewise in the County of York do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in chimney or ventilating caps of the kind
described in our former specification of Letters Patent No. 8309 dated June 7 1888
and consists first in providing a fourth tubular shield in addition to the three shields
therein described, secondly in providing holes in the two tapering shields or deflectors
to facilitate the egress of soot or moisture collected in these tapering shields and
thirdly in providing a collar upon the fourth or tubular shield above referred to, to
be employed when the ventilating cap is to be used in a horizontal position such
for example as when fixed on the sides of buildings or vehicles.
According to our present invention we use at the outer end of a shaft socket or
opening in connection with the space or object to be ventilated, two shields or
deflectors of a conical spheroidal or any other tapering general shape, placed so
that their larger ends, bases or edges shall be near and towards each other, having
openings at or near their extremities on the underside to assist the egress of soot,
rain or moisture, with a space or outlet between the larger ends, bases or edges of
such tapering shields or deflectors proportioned to the amount of ventilation required
and so attached to the shaft socket or space to be ventilated, that the space
between the two tapering shields or deflectors may be in communication with
the same.
Around and outside the space or outlet previously described and at a suitable
distance from the same, we place a third shield in the form of a belt or girdle of
dimensions sufficient for the edges of the same to cover or form an overlap to the
edges of the two shields before described following generally the shape or outline
of such edges, and leaving a space between itself and the two tapering shields
or deflectors previously described proportioned to the amount of ventilation
required.
Inside the two tapering shields or deflectors we fix a fourth shield or deflector of
such a shape as to form a continuation of the socket or shaft upward or beyond
the point of attachment of the chimney or ventilating cap and form a continuous
channel between the same to take off any rain or moisture admitted and to deflect
away from such socket or shaft any .currents of air which may be admitted through
the openings made in the tapering shields or deflectors for the purpose hereinbefore
referred.to.
The fourth shield herein before referred to may be provided with a collar or flange
and so provide further obstacles to the ingress of rain or moisture within the shaft
especially when the chimney or ventilating cap herein before described is to be used
in a horizontal position, as on the sides of buildings or vehicles.
Dated this 6th day of August 1889.
AYRTON & THOMAS,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Chimney or Ventilating Caps.
We JOSEPH MULLIGAN, Tin Plate Worker of No. 143 Pond Street, Sheffield in
the County of York, and CHARLES SWINDELL, Bank Cashier of No. 12 Kenwood
Road Sheffield, likewise in the County of York 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 caps of the kind
described in our former specification of Letters Patent No. 8309 dated June 7 1888
and consists first in providing a fourth tubular shield in addition to the three shields
therein described, secondly in providing holes in the two tapering shields or deflectors
to facilitate the egress of soot or moisture collected in these tapering shields and
thirdly in providing a collar upon the fourth or tubular shield above referred to, to
be employed when the ventilating cap is to be used in a horizontal position such
for example as when fixed on the sides of buildings or vehicles.
According to our present invention we provide for the improvements herein before
mentioned in the manner shown by the accompanying drawings in which Figure 1
is a side elevation Figure 2 a sectional plan upon the line A B in Figure 1 and
Figure 3 is a front sectional elevation of the improved chimney or ventilating cap.
At the outer end of a shaft, socket or opening C in connection with the space or
object to be ventilated we attach two shields or deflectors a a of a conical spheroidal
or any other tapering general shape, placed so that their larger ends bases or edges
shall be near and towards each other, having openings hat or near their extremi-
ties on the underside to assist the egress of soot rain or moisture with a space or
outlet d between the larger ends, bases or edges of the tapering shields or
deflectors a a proportioned to the amount of ventilation required, and so attached to
the shaft, socket or opening C to be ventilated, that the space between the two
-tapering shields or deflectors a a may be in communication with the same.
Around and outside the space or outlet previously described and at a suitable
distance from the same we place a third shield in the form of a belt or girdle of
dimensions sufficient for the edges of the same to cover or form an overlap to the
edges of the two shields a a following generally the shape or outline of such edges
and leaving a space e between itself and the two tapering shields a a proportioned
to the amount of ventilation required.
Inside the two tapering shields or deflectors a a we fix a fourth shield or deflector f
of such a shape as to form a continuation of the socket or shaft Cupward or beyond
the point of attachment of the chimney or ventilating cap and form a continuous
channel between the same to take off any rain or moisture admitted and to deflect
away from such socket or shaft any currents of air which may be admitted through
the openings made in the tapering shields or deflectors a a for the purpose herein-
before referred to.
The belt or girdle forming the third shield b is attached to the two tapering shields
or deflectors a a by means of the web or pillar j.
The fourth shield or deflector may be fitted with a collar or flange g and so
provide further obstacles to the ingress of rain or moisture within the shaft C
especially when the chimney or ventilating cap herein before described is to be used in
a horizontal position as for instance on the sides of buildings or vehicles.
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 claim is:
-
1. In a chimney or ventilating cap the formation of the shields or deflectors a a
with openings hh at their under sides to facilitate the egress of soot when cleaning
the chimney to which the chimney cap is applied substantially as described and shown
in the accompanying drawings.

page_text: 2. In a chimney or ventilating cap the combination of the shields or deflectors a a,
having soot discharge holes h h and provided with a surrounding shield b, with a
fourth shield or deflector fas and for the purpose described, and substantially as
shown in the accompanying drawings.
3. In a chimney or ventilating cap the combination of the shields or deflectors a a
with or without soot discharge holes h, with a third shield 6 and a fourth shield or
deflector having a collar or flange g fitted therein as and for the purpose described
and substantially as shown in the accompanying drawings.
Dated this 7th day of May 1890.
AYRTON & THOMAS,
Agents for the Applicants.