DECISION OF THE DEPUTY COMPTROLLER-GENERAL.
Year: 1884

page_text: I, SAMUEL JOHN CHINN of 16, Noel Road, Edgbaston, Birmingham in the
County of Warwick, Sanitary Engineer, seek leave to amend the specification
of Letters Patent, No. 13,497 of 1884, as shown in red ink in the copy of the
original specification hereunto annexed :-
By disclaiming the second claiming clause viz:-"The intermediate series or
baffle plates g. to be straight as presenting the least friction for the winds
deflection."
I find this part of my
My reasons for making this amendment are as follows
invention is not new, but anticipated 27507 129672 3900* &c.
DECISION OF THE DEPUTY COMPTROLLER-GENERAL.
I hereby grant leave to the said Samuel John Chinn to amend the said
20 Specification in the manner proposed.
J. CLARK HALL,
Deputy Comptroller-General.

page_text: I, SAMUEL JOHN CHINN, of 16 Noel Road, Edgbaston, Birmingham in the
County of Warwick, Sanitary Engineer, do hereby declare the nature of my
invention for IMPROVEMENTS IN EXHAUST VENTILATORS to be as follows:-
This invention consists of a number of vertical plates fastened between two
horizontal plates which may also be partially coned or rounded, the lower plate
having an opening forming the entrance to a vacuum chamber hereafter mentioned.
The vertical plates are placed in three different series, each series comprised of four
plates. The first or inner series, are bent at two angles and form a partially
closed chamber which I have before referred to as a vacuum chamber. This
chamber shows vertical openings or slots at four of its sides which are covered at
a suitable distance by the second series of plates, these presenting flat vertical
surfaces and showing increased slots or openings between them. The third or
outer series of plates have an angular edge and are placed at a suitable distance in
a position to overlap the vertical openings between the second series, and cover
approximately one half of the circumference of the ventilator, equal distances or
openings for the passage of the wind being left between them. The ventilator is
placed in position and connected by a pipe or other suitable means to the room or
house below it, communication being thus established between the vacuum chamber
and the atmosphere below. By the peculiar construction of the inner and outer
series of plates and the straight plates placed between them (the latter of which
may be called "baffle plates") the wind on coming in contact with the ventilator
passes between the first and second series and partially round the inner series of
plates, whence it escapes on the side opposite to its entrance and in its passage
creates a vacuum in the inner chamber, any foul air being drawn thereto and
carried away with the passing wind.

page_text: 214
I, SAMUEL JOHN CHINN of 16, Noel Road Edgbaston, Birmingham in the
County of Warwick Sanitary Engineer, do hereby declare the nature of my
invention for "IMPROVEMENTS IN EXHAUST VENTILATORS" and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
This Invention consist of a series of vertical plates confined between two
horizontal plates the latter of which may be also coned or rounded if desired.
These vertical plates are placed in the different series and their relative positions
and angles will be readily understood by reference to the accompanying drawings
in which Fig 1. is an elevation of an ordinary ventilator shewing a base p. p.
vertical plates q. q. q. q. and a cone-shaped cover r. Fig 2 is a plan of the
interior. In its construction the required size of the ventilator is compassed by
any circle on the top or bottom plate shewn for example by the dotted line d d d d
Fig 2. The circle is then divided into equal sections shown by the dotted straight
lines d d. d d. e e. e e. The first or outer series of plates are slightly bent at the
points d. d. d. d. forming angles approximately of 60 and 65 degrees to the
sectional lines d. f. The second series of plates g. g. g. g. which may be termed
"baffle plates" are straight and suitably placed at approximate angles of 85 and 95
degrees respectively with the cross sectional lines c c. c c. The inner series of
plates are bent at h, to form approximate angles of 70 and 75 degrees to the
intersecting lines h. f. while the lines forming the angles at i are drawn parallel to
them or an angle of 45 degrees.
The inner series of plates impinging on the circle k. k. k. forms what may be
termed the vacuum chamber, below which and attached to it is a pipe or passage
communicating with the smoke-room, soil pipe or chamber below. The relative
positions and angles of these plates are found by experiments to produce the most
perfect vacuum by means of the wind's natural force yet discovered. On the wind
blowing from the direction of the arrows a. a. a. it enters the ventilator between
the points b b and c c. Whilst its passage between c. c. is comparatively slight
and but immaterially deflected at the upper angle d, on its exit between d and e;
the main body of wind on its entrance between b. b. comes in contact with the
baffle plate g. and is deflected right and left as shewn by the arrows, the bulk of
it, (the wind blowing from this direction) to the left, where also on account of
the baffle plate g not quite overlapping the outer plate a narrow free passage is
allowed between m. d. The wind is thus divided at m, and follows the different
courses marked by the arrows till it reaches its outlet on the reverse side
between d. e. It will be obvious that by the passage of the wind past the inner
series of plates h. h. h. h. a vacuum is obtained to fill which the foul air from the
chamber below k. k. k. is drawn through the outlets formed by the angles i. i. i. i.
joins with and is carried away by the passing wind.
In the construction of this ventilator I do not confine myself to size, outward
shape or material,

page_text: i
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. A. triple series of vertical plates, placed between horizontal or coned plates,
the vertical plates being placed in the relative positions and at the angles substan-
tially as described and shewn in the drawings.
2. The intermediate series or baffle plates g. to be straight as presenting-the
least friction-for-the winds-deflection.

page_text: I, SAMUEL JOHN CHINN, of 16 Noel Road, Edgbaston, Birmingham in the
County of Warwick, Sanitary Engineer, do hereby declare the nature of my
invention for IMPROVEMENTS IN EXHAUST VENTILATORS to be as follows:-
"
This invention consists of a number of vertical plates fastened between two
horizontal plates which may also be partially coned or rounded, the lower plate
having an opening forming the entrance to a vacuum chamber hereafter mentioned.
The vertical plates are placed in three different series, each series comprised of four
plates. The first or inner series, are bent at two angles and form a partially
closed chamber which I have before referred to as a vacuum chamber. This
chamber shows vertical openings or slots at four of its sides which are covered at
a suitable distance by the second series of plates, these presenting flat vertical
surfaces and showing increased slots or openings between them. The third or
outer series of plates have an angular edge and are placed at a suitable distance in
a position to overlap the vertical openings between the second series, and cover
approximately one half of the circumference of the ventilator, equal distances or
openings for the passage of the wind being left between them. The ventilator is.
placed in position and connected by a pipe or other suitable means to the room or,
house below it, communication being thus established between the vacuum chamber
and the atmosphere below. By the peculiar construction of the inner and outer
series of plates and the straight plates placed between them (the latter of which
may be called "baffle plates") the wind on coming in contact with the ventilator
passes between the first and second series and partially round the inner series of
plates, whence it escapes on the side opposite to its entrance and in its passage
creates a vacuum in the inner chamber, any foul air being drawn thereto and
carried away with the passing wind,

page_text: I, SAMUEL JOHN CHINN of 16, Noel Road Edgbaston, Birmingham in the
County of Warwick Sanitary Engineer, do hereby declare the nature of my
invention for "IMPROVEMENTS IN EXHAUST VENTILATORS" and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
This Invention consists of a series of vertical plates confined between two
horizontal plates the latter of which may be also coned or rounded if desired.
These vertical plates are placed in the different series and their relative positions
and angles will be readily understood by reference to the accompanying drawings
in which Fig 1. is an elevation of an ordinary ventilator shewing a base p. P.
vertical plates q. q. q. q. and a cone-shaped cover r. Fig 2 is a plan of the
interior. In its construction the required size of the ventilator is compassed by
any circle on the top or bottom plate shewn for example by the dotted line d d d d
Fig 2. The circle is then divided into equal sections shown by the dotted straight
lines d d. d d. e e. e e. The first or outer series of plates are slightly bent at the
points d. d. d. d. forming angles approximately of 60 and 65 degrees to the
sectional lines d. f. The second series of plates g. g. g. g. which may be termed
"baffle plates" are straight and suitably placed at approximate angles of 85 and 95
degrees respectively with the cross sectional lines e e. e e. The inner series of
plates are bent at h, to form approximate angles of 70 and 75 degrees to the
intersecting lines h. f. while the lines forming the angles at i are drawn parallel to
them or an angle of 45 degrees.
The inner series of plates impinging on the circle k. k. k. forms what may be
termed the vacuum chamber, below which and attached to it is a pipe or passage
communicating with the smoke-room, soil pipe or chamber below. The relative
positions and angles of these plates are found by experiments to produce the most
perfect vacuum by means of the wind's natural force yet discovered. On the wind
blowing from the direction of the arrows a. a. a. it enters the ventilator between
the points b b and c c. Whilst its passage between c. c. is comparatively slight
and but immaterially deflected at the upper angle d, on its exit between d and e;
the main body of wind on its entrance between b. b. comes in contact with the
baffle plate g. and is deflected right and left as shewn by the arrows, the bulk of
it, (the wind blowing from this direction) to the left, where also on account of
the baffle plate g not quite overlapping the outer plate a narrow free passage is
allowed. between m. d. The wind is thus divided at m, and follows the different
courses marked by the arrows till it reaches its outlet on the reverse side
between d. c. It will be obvious that by the passage of the wind past the inner
series of plates h. h. h. h. a vacuum is obtained to fill which the foul air from the
chamber below k. k. k. is drawn through the outlets formed by the angles i. i. i. i.
joins with and is carried away by the passing wind.
In the construction of this ventilator I do not confine myself to size, outward
shape or material,

page_text: 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. A triple series of vertical plates, placed between horizontal or coned plates,
the vertical plates being placed in the relative positions and at the angles substan-
tially as described and shewn in the drawings.
2. The intermediate series or baffle plates g. to be straight as presenting the
least friction for the winds deflection.
Dated this 27th day of April 1885.
SAMUEL JOHN CHINN.
Per Edmund Wright,
Agent,
54, Hamstead Road, Handsworth, Staffs.