Year: 1899

page_text: Date of Application, 17th Jan., 1899-Accepted, 4th Mar., 1899
I, LOUIS HEINRICH HONIGBAUM, Mechanical Engineer, of Knob, in the County of
Shasta and State of California, one of the United States of America, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained by the following statement:-
This invention relates to improvements in ventilators, and has more particular
relation to ventilators for attachment to the tops of chimney or ventilating shafts
to prevent the draught from blowing down the shaft or chimney.
The invention consists of certain novel constructions, combinations and arrange-
ments of parts, all of which will be hereinafter more particularly set forth
and claimed.
In the accompanying drawings forming part of this specification,
Figure 1 represents a side elevation of a device embodying my invention.
Figure 2 represents a top plan view of the same.
Figure 3 represents an enlarged detail central vertical section through a portion
of the casing containing one of the rubber buffers.
Figure 4 represents a top plan view of one of the apertured lugs for containing
the anti-friction balls, and
Figure 5 represents a central vertical section through the same.
A in the drawing represents the attaching pipe, B the casing surrounding the
upper end of the same, and C the protecting hood or guard. The attaching pipe A
may be of any desired construction adapted to be secured to the upper end of a
chimney or ventilating flue. The casing B which is of greater diameter than the
pipe A, is preferably hexagonal in cross-section, and is mounted about the upper
end of the pipe A by suitable radial arms b so that there may be a clear draught up
about the pipe A between said arms. Said casing B is provided upon each of its
sides with a draught opening 6' covered by hinged doors 62. Each of these doors
is provided with a hinged rod 63, the upper and lower ends of which protrude
beyond the upper and lower edges of the docr, so that they can be mounted in
lugs and be respectively, secured near the upper and lower edges of the casing.
The lug b comprises an apertured attaching plate 66 and an enlargement 67
having a passage 68 therethrough. The lug 65 comprises an apertured attaching
plate having an enlargement 610 formed with a socket 61, in which is mounted an
anti-friction ball 612 preferably of glass.
It will be observed from the foregoing description, that the entire weight of
the dror falls upon the glass ball and thus the door may open or close with a
minimum amount of friction. Also the said ball will not cause corrosion in the
socket and thus will prevent all noise from the operation of the supporting rod
in said socket. In order to prevent the doors 62 slamming shut against the
casing B with such force as to cause an abnormal amount of noise, I provide
the wall of said casing with a plurality of buffers D. Each of these buffers com-
prises a headed block of rubber adapted to be slipped through a suitable aperture

page_text: formed in the casing, so as to protrude in front of said casing and receive the
concussion of the door. Each of these blocks is held firmly in position by an
attaching plate that is passed about the rear head of said block and secured
to the casing by suitable screws or rivets d' The doors upon diametrically
opposite sides of the casing B are connected by pivoted rods 613 so that, as the door
upon one side is blown closed, the companion door upon the opposite side is
opened. This peculiar construction is to prevent the wind blowing the smoke and
other products of combustion down the chimney, as only the doors away from the
wind are open, and thus a complete suction at the top of the chimney is established.
The guard C has an upper and lower conical surface and is of slightly greater
diameter than the pipe A. and is mounted in the upper end of the casing B by
suitable radial arms c. The office of the upper conical portion of the said guard
is to provide a perfect water and snow shed, while the under conical portion is
intended to divert the smoke and other products of combustion from the centre of
the shed toward the periphery, so that they may readily discharge out of the top
of the casing B.
It will also be observed that this ventilator will be automatically operated by
the direction of the wind, and only the doors or shutters upon the lee side of the
casing B opened. At the same time, this operation of said doors will be
accomplished without any noise or concussion, because of the antifriction bearings
and the rubber buffers.
A material advantage results from making the casing hexagonal in cross
section for the reason that the wind can act upon only three sides thereof and the
other three sides will be protected so that the doors which cover the openings
in the lee-sides may remain open and not be affected by the wind, which would
cause the doors to continually blow to. In devices of a similar nature heretofore
employed in which the casings are square, the wind can obtain access to as many
as three of the doors at one time and as a result at least two of the doors will be
alternately opened and closed continuously by the action of the wind, thus
making a disagreeable slamming noise and causing unnecessary wear
parts.
on the
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be operated, I declare that what
I claim is:
In a ventilator, a casing hexagonal in cross section, and provided in each side
with a draft opening, in combination with a corresponding series of
doors hinged on vertical axes at the sides of said openings and
designed to close the same, તી series of rods connecting the doors in
opposite pairs, and a protecting cone arranged at the upper end of the casing,
said cone being of less diameter than the casing so as to leave a surrounding space
and being of greater diameter than the flue pipe, substantially as and for the
purpose described.
Dated this 17th dor of Ton 1000