Ventilator Page: 2 of 3
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UNITED STATES PATENT OFFICE.
ROBERT S. 'HEDGES,-OF SAN ANTONIO, TEXAS, ASSIGNOR' OF -ONE-HALF:.TO JOSEPH P.
-.ANDREWS, OF SAN ANTONIO, TEXAS.
VENTILATOR.- Specification of Letters Patent.
Patented Mar 26; 1918.
Application filed January 9, 1917. Serial No. 141,423.
To all whom it, may concern:
Be it known, that I, ROBERT S. hEDGEs, a
citizen of the.United States,-residing at San
Antonio, in the county of. Bexar and State
5 of Texas, have.invented a new and useful
Ventilator, of which the following is.a speci-
fication.
The present invention appertains to ,ven-
tilators, and aims to provide: a novel; and im-
10 proved device of that character for use on
Pullman and passenger coaches, street cars,
buildings and elsewhere.
It is the object of the invention to provide
a ventilator of simple- and inexpensive yet
15 practical and effective construction, and one
having novel means for controlling the flow
of air therethrough.
With the foregoing and other objects in
view whichtwill. appear. as the description.
20. proceeds, the invention resides in the combi-.
nation and arrangement of parts and in the
details of construction hereinafter described
and claimed, it being understood that
changes in the precise embodiment of the in-
25 vention herein disclosed can be made within
the scope of what is claimed without depart-
ing from the spirit of the invention.
The invention is illustrated in the accom-
panying drawing, wherein:-
30 Figure 1 is a horizontal section of the
ventilator taken on the line 1-1 of Fig. 2.
Fig. 2 is a cross section taken on the line
2-2 of Fig. 1.
Fig. 3 is a sectional detail taken on the
35 line 3-3 of Fig. 2.
At the outset, it is pointed out that the pres-
ent construction can be built in the railroad
coach, street car, or other structure as a part
thereof, and can be arranged in various po-
40 sitions according to its use.
The device embodies an elongated casing
constructed of sheet metal, as illustrated,
and comprising the back wall 1, top 2 (which
may be the bottom if the device is in invert-
45 ed position from that shown in Fig. 2), end
walls 3 united with the back wall and wall
2, and longitudinal plate 4 united at its ends
with the end walls 3 and bent on alongitudi-
nal line to provide the bent back portion 5
50 outside of the casing. The plate 4 has its
bend facing the back wall 1 and spaced
therefrom to provide a longitudinal opening
6 across which a screen 7 is disposed, the re-
spective edge of the back wall 1 being bent
55 back or reflexed, as at 8, for the attachmentof the screen 7, and the bend of the; plate 4
being formed, as at 9, for the attachment of
said screen. The screen prevents the pas-
sage of cinders or other formed objects
through the opening 6, and the casing can 60
be arranged in any suitable. position for di-
recting the air through the opening 6 in
the direction desired.
The end walls 3 have the bent back U-
shaped portions 10 and U-shaped members 65
11 are secured to the wall 2 and plate 4, to
provide the openings 12 in the front of the
casing. The openings 12 are in that side
of the casing at right angles with the side
having the opening 6.
'The forward edges of the .top 2 and' plate
4 are bent back or reflexed, as at ,13 and 14,
to provide suitable bearings for rock shafts
15 which, are journaled. through said, bent
back or doubled portions centrally of the 75
openings 12. The forward edge of the bent
back portion 5 is also reflexed or doubled, as
at 16, to assist in supporting the shafts 15.
Plates or dampers 17 are secured to the
shafts 15 and are swingable therewith with- SO
in the openings 12, said dampers closing the
openings when the dampers are brought into
a longitudinal position.
As a means for operating the dampers,
gear wheels 18 are secured to the shafts 15 85
between the plate 4 and its bent back por-
tion 5, and mesh with a longitudinal rack
bar 19 slidable within the guide formed by
said plate and its bent back portion, the
rack bar 19 bearing against the bend of the 90
plate and being slidable between said bend
and the pinions 18. The rack bar 19 can be
reciprocated by any suitable means, and
from a distant point, for rotating the
shafts 15. 95
A longitudinal series of transverse parti-
tions 20 of sheet metal or other suitable ma-
terial are secured to the back wall 1, plate 4
and wall 2, and terminate short of the front
wall or side of the casing, said partitions 100
extending across the opening 6 and divid-
ing the air into a plurality of streams.
When the dampers 17 are swung in one
direction as illustrated in full lines in Fig.
1, the inner side edges thereof move adja- 105
cent to certain of the partitions 20 for direct-
ing the air correspondingly, and when the
dampers are swung in the opposite direc-
tion to the dotted line positions, as seen in
Fig. 1, the other side edges of the dampers 1101,260,538.
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Hedges, Robert S. Ventilator, patent, March 26, 1918; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1257153/m1/2/: accessed June 27, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.