Improvements in and connected with Fresh Air Induction Pipes in connection with Warming Buildings.
Year: 1889

page_text: Date of Application, 24th Dec., 1889
Complete Specification Left, 22nd Aug., 1890-Accepted, 11th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in and connected with Fresh Air Induction Pipes in
connection with Warming Buildings.
I, ROBERT LITTLE of 48 Townsend Place, Kirkcaldy, in the County of Fife,
Architect, and Building Surveyor do hereby declare the nature of this inventtion to be
as follows:-
My invention relates to the construction of pipes or conduits to be used in connection
with hot-water, steam, or other heating pipes, for the purpose of conveying fresh air
into the buildings to be warmed.
For this purpose, I make the pipes or conduits perforated on the sides with
longitudinal openings formed on both sides of pipe, with alternate close part between
openings, close. parts, and openings, placed on each side alternately, throughout the
whole length of pipe or conduit. The said openings will be formed with their upper edges
on a level with axis of pipe and the lower sides of openings cut away perpendicularly
with cross axis of pipe to prevent the entrance of dust or other foreign matter. Short
connecting pieces made without the side openings will be placed at regular distances
having side branch pipes, to connect with ordinary pipes to convey fresh air from outside
of buildings to said induction pipes. These pipes may be made in any lengths joined
together by means of spigot and socket or other rebated joints, for jointing air tight
with cement.
The air thus warmed by immediate contact with heating pipes, is then passed direct
into buildings, through gratings fixed in floors or skirtings, securing a continuous
stream of warmed fresh air distributed equally over the building at the lowest point of
entrance during winter, when warm air is wanted, or fresh cool air in summer, when
cool air is wanted.
The said induction pipes and connecting pieces to which my invention specially
refers may be made either in cast iron or other metal, or earthenware.
Dated this 21st day of December 1889.
ROBT. LITTLE,
48, Townsend Place, Kirkcaldy.
COMPLETE SPECIFICATION.
Improvements in and connected with Fresh Air Induction Pipes in
connection with Warming Buildings.
1, ROBERT LITTLE, 48 Townsend Place Kirkcaldy in the County of Fife, Architect
and Building Surveyor, 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 :—
My invention relates to the construction and arrangement of induction pipes or
conduits to be used in connection with hot water, steam, or other heating pipes or
coils, and for the special purpose of conveying and distributing fresh air inside the
building to be warmed.
For this purpose I make the induction pipes or conduits perforated with longitudinal
openings formed on both sides of pipe, placed one opening on each side alternately
with close part between throughout the whole length of pipe for the purpose of
delivering the fresh air uniformly, between the heating pipes.
The aforesaid openings are formed with their upper edges cut level with the cross
axis of pipe, and the lower edges of openings are thinned away, with the sides cut
back perpendicularly with the cross axis of pipe: this is for the purpose of preventing
Price 81

page_text: the entrance of dust, or other foreign matter, when floors are being swept, or when no
air is passing into the building.
The air thus warmed, by immediate contact, with the heating pipes, is then passed
direct into building, through gratings fixed in floor or skirtings, securing a continuous
stream of warmned fresh air, distributed equally over the building at the lowest point of
entrance, during winter, when warm air is wanted, or fresh cool air in summer, when
_cool air is wanted.
For the purpose of supplying air, to the aforesaid induction pipes, I make short
supply, or connecting pieces, with side branch pipe, long enough to pass through walls
of building or main conduit, in which induction and heating pipes are laid: the said
branch pipe, is thus connected to earthenware supply pipe laid as required, to conduct
fresh air from outside of building.
In the accompanying drawings, which serve to illustrate my invention, Fig. 1 is a
side elevation of induction pipe, Fig. 2 vertical cross section, Fig. 3 horizontal
section, or plan, embodying my improvements, Fig. 4 enlarged cross section of
distributing openings, while Fig. 5 is cross section, and Fig. 6 sectional elevation of
main conduit, showing relative positions of said induction pipes, in connection with
heating pipes.
Fig. 1 shows induction pipes A A A, as laid with spigot and socket joints, and
openings a a a a, in sides, for the distribution of fresh air, B is short connecting piece,
placed at intervals of about every third pipe A, to admit the required amount of fresh
air, made with spigot and socket ends, to join in with induction pipes A, and branch b
on side, with socket to join earthenware supply pipes.
Fig. 2 shows vertical section of induction pipe A, and the position of openings a a,
with the lower side cut back, to prevent inlet of dust or other foreign matter,
B connecting piece with side branch b.
Fig. 3 shows horizontal section or plan of induction pipes A, A, A, A, with
openings a, a, a, a, as arranged on both sides of pipe A, for the distribution of fresh air,
B section of connecting piece with side branch b.
Fig. 4 shows half full size section of induction pipe A, and formation of opening a.
Fig. 5 shows cross section of relative positions of induction pipe A, and connecting
branch piece B, under hot water or other heating pipes CCCC, supported on iron
cross bars D, the whole enclosed in brick built or other conduit or chamber E E,
covered with iron or other gratings F, on floor of apartment to be warmed. The
fresh air is supplied through pipe b, discharging through side openings a, a, and
passing between and in contact with hot water or other heating pipes C°C CC, thus
thoroughly warming the fresh air before admission to the building.
Fig. 6 shows sectional elevation also, of relative positions of induction pipes A A A A,
with side fresh air openings a a a a, as laid under hot water or other heating
pipes CCC, resting on cross bars D D, in close built conduits or chambers E, covered
over with grating F.
I would remark in conclusion, that I do not confine myself to the exact shape,
and construction of the parts herein described, as the invention is susceptible of
considerable modification, to suit the different classes of buildings for which it is
specially suitable, and the various positions in which it may be placed, that is to say
for the warming of churches, halls, schools, conservatories, or such like buildings,
· I prefer laying the pipes under the floor, when the warm air can be admitted through
gratings in skirtings, or directly up through floors, all as shown on illustrations.
In cases where the heating pipes must be placed above the floor line, the fresh air
induction pipes, herein referred to, can be placed immediately under, and parallel
with, heating pipes with equal advantage.
I prefer the arrangement, as shown on illustrations.
The induction pipes, and short connecting branch pieces, to which my invention
specially refers, may be made in any lengths of cast iron, or other metal, or earthen-
ware, with spigot and socket or other rebated joints for cementing airtight.
I prefer earthenware, and all as shown on illustrations.

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 ;
1st. Improvements in the mode of supplying, and distributing fresh warm air to
buildings, by means of perforated pipes or conduits, herein called induction pipes, laid
under and parallel with, hot water, steam, or other heating pipes, in the manner
and all substantially as described.
2nd. The formation and distribution of the parallel openings, or fresh air outlets,
in sides of pipes, in the manner and all substantially as described.
3rd. The short connecting pièces, with side branch, in the manner and all substantially
as described.
D115 011
21000