Year: 1889

page_text: I, Busso VON BUSSE of the City of Breslau, in the kingdom of Prussia, German
Empire, Builder, 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 present invention relates to an improved system of ventilating the hollow space
underneath the floors in housos etc., whereby dampness and also the formation of fungi
is prevented, especially as in winter it is possible to utilize the heated air of rooms
for the ventilation, thereby also preventing the coldness which proceeds from the
hollow space underneath the flooring.
I attain this object by means of an apparatus illustrated herewith and shewn in
detail in the drawings A, B, C, D & E.
The apparatus consists of the three parts shewn in Figs. A, B, & C., part A is
formed of a tube a. with which is connected a bent tube c, both being rectangular in
cross-section and are conveniently made so that the section is the size of an ordinary
brick. Across the cutting b., where the tubes c. and a. meet, are placed two cross
pieces d. d.
The open end of the tube c. is closed with a wire grating e, while at the corre-
sponding end of a a frame fis fixed, to which is attached a moveable grating or wire
covering.
Part B. of the apparatus consists of a tube of about the same cross section as a
and c, at one end is fixed a frame with grating or wire covering i..
Part C. is a slide and consists of a wooden block and two pieces of felt or other
suitable material, which are held closely against the wood block by means of
two metal plates m and a couple of bolts, and to the bolts at one end a handle is
attached.
The method of using the apparatus is shewn in Figs. D. and E. Part B is pushed
into the open end of part a [ilie end opposite to the moveable wire covering] and the
whole fitted into the wall of house or building in course of construction in such a
manner that the end of the apparatus which is provided with a moveable wire covering
opens into the appartment while the corresponding end of c, opens into the hollow

page_text: space under the floor of the appartment, while the ond of purt B faces the open air.
Each end being placed level with the surface of the inside and outside wall respectively,
part B being made of a suitable length for the various thicknesses of walls, is pushed
sufficiently far into the part A so that the two frames i. and f. fit closely against the
outer and inner walls respectively.
The slide is pushed into tube a through the moveable wire opening and by its
means the ventilation is regulated. When placed into the position shewn in Fig. D,
the air will pass from the outside straight underneath the floor, the slide preventing it
getting into the room. This system of ventilation is however only commendable
during the summer time, us in winter time the heated air of the appartinent can be
used for the ventilation of the space under the floor, and this is effected by means of
the slide C, being pushed forward in the position shown in dotted lines Fig. D. and
thus excluding the air from the outside. at the same opening communication between
the appartment and the space, under the floor, and thus admitting the heated air for
ventilation.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is :
1. An apparatus for ventilating the hollow space underneath floors in Buildings,
consisting essentially of a three armed tube opening severally into the space to be
ventilated, into the space above the floor-and into the open air, with means for shutting
off communication.
1. An apparatus for ventilating the hollow space underneath floors in buildings,
consisting essentially of a three-armed tube opening severally into the space to be
ventilated, into the space above the floor and into the open air with means for shutting
off communication.at will of the space to be ventilated, with, the open air or with, the
space above, the floor,, substantially in, the manner, described, and, as shewn in the.
drawings.
2: Providing such apparatus with an extra tube B inserted telescope, fashion for the.
purpose of making the combined apparatus fit varying thicknesses of wall, substantially
as described: