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oct, 1,1946.
'
R. H. WAGE'R
.
SMOKE INSPECTION DEVICE
Filed Juné 19, 1945
.9
2,408,495'
'
A 2 Sheets-Sheet l
Oct. l, 1946.
R. H. wAGER
¿2,408,495
SMOKE INSPECTION DEVICE
-Filed June (L9, 1945
l
2 Sheets-Sheet 2
Patented Oct. 1,Y 1.946
2,408,495
UN 11T El? ;; STATES " BALTENT » OFF!CE1!YA
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¿$12,408,4v951`1...
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SMOKE INSPECTION DEVICE . '
Robert-Hudsonwager, Maplewood, N. J.-
_
jjj y¿Ivp'gpl’i'«anima.rune 19, 1945,'swarm».` coasts v
~ solaims. (cina-f1.4)
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2.
The invention relates to 'smoke inspection de~
' central area II. The central area II in thepres»l
vices of the general type shown in my U. S. Pat-I
entI disclosure is substantially triangular and has
ents 1,708,987‘of Aprilléì,v 1929; and 2,118,716 of
' straight ‘longitudinal edges I3 vconverging .up
wardly to a point I4. The lateral areas I2 have
May 24, 1938, in which a beam of'light lis pro
jected horizontally through the smoke leaving a 5 straight inneredges I5 extending along the edges
boiler and is reflected within tubingby a plu
I3,`and the remaining edges of said areas II and
rality of mirrors to an observation unit in the
I2 are preferably curved toan elliptical outline.
boiler room, the character of the smoke being
Visible by looking at the reñection on the iinal
mirror included'in said observation unit. TheV
The areas II and I2, in the present disclosure,
smoke reflection on this final mirror has been
vided, if desired.
clearly visible only from one observation station
directly in front of the observation unit. It is
Ay supporting plate I9 is provided for the mir
ror sections' I6, I `I and I8, said plate being re
cessed to receive said sections vand, to also receive
are on separate mirror sections I6, I'I and I8
(Fig. 4) but a one-piecemirror could be pro
the object of the present invention, however, to
provide an improved observation unit which does Y
not require the fireman to walk periodically to
the aforesaid observation station but enables him
to also view the smoke reflection equally as well
from other points to the right and left of said
station, thus permitting him `to observe the char
acter of the smoke without interruption to other
duties which he may be performing.
.
central
vertical
longitudinal sectional
Fig. 2 is a front elevation.
an appropriate mirror backing 20. The mirror
sections and backing are held in place by a
`Asuitable frame 2I secured to the plate I9 by
screws or the like 22, this frame being omitted
~ in Figs. 3, 4 and 5.
A ball and socket joint 23 is shown for mount
ing the plate I9 in the casing 6 and permitting
pivotal adjustment'in various directions. 'I‘his
~
Figure 1 of the accompanying drawings> is a
through the improved observation unit.
I rjoint is of the construction shown in the above
view
mentioned patents and includes screws 24 for
adjusting, and for locking after adjustment.
From the foregoing and the accompanying
Y
'
Fig. 3 is an elevation- of the plural-plane mir
ror and its lsupporting plate, looking in the di
rection indicated by the arrow _3 of Fig. 1, the
mirror holding frame being omitted.
'
drawings, it will be seen that novel provision has
been made for carrying out the object of the in
` >vention. Not only can a visual smoke inspection
30 be made from a central point in front of the cas
,
Fig. 4`ís a transverse section on line 4-4 of
I
Fig.
3.
,
`
ing 6 but from points to the right and left of ,
said central point, with obvious advantages.
While preferences'have -been disclosed, minor
variations may be made within the scope of th
>
Fig. 5 is an end elevation viewed in the direc
tion indicated by the arrow 5 of Fig. 3.
In the drawings above kbrieiiy described, the
35
casing of the observation unii-l is denoted at 6,
invention as claimed.
I claim:
.
l
'
said casing being in substantially `the form or
1. AIn a smoke inspection device, an observation
an elbow with an upwardly open light inlet 'I
unit comprising a casing having an upwardly open
and a liared horizontally open light outlet S. . light inlet anda horizontally open light outlet,
The upper end of the casing is suitably adapted 40 a plural-plane mirror in said casing for intercept
at 9 Yfor connection with the tubing (not shown)
ing light rays entering the casing through said
within which the beam ofy light is downwardly ‘
inlet and reflecting said rays through said out
let, said mirror comprising a central flat longi
tudinally inclined reflecting area having right
45 and left longitudinal'edges, and two flat longiè
reiiected after projection throughl the smoke
leaving the boiler through the usualuptake or
breeching.
»
‘
A plural-plane mirror _III is mounted in the' ' tudinally inclined lateral reflecting areas having
casing 6 for intercepting the downwardly reflect
inner longitudinal edges extending along said lon
ed light beam entering through the inlet 'I and
horizontally reiiecting said beam through the
gitudinal edges of said central reflecting area,'said
two lateral reñecting areas |being inclined trans-`
outlet 8. . The mirror I0 comprises a flat inclined
versely at an obtuse angle to said central reflect-v
central reflecting area II Vand two flat llateral
vrling area, whereby reflected rays vwill be visible
reflecting areas I2, said areas I2 being not only '
from a, central point in front of said light outlet
and from points to the right and left of said cen
>tra] point, and means mounting said plural-plane
inclined'in the same direction as the central area
II but being transversely inclined at an obtuse
angle (preferably about 221/2 degrees) to saidy
55
mirror in said casing.
2,408,495
3
2. In a smoke inspection device, an observa
tion unit comprising a casing having an upwardly
open light inlet and a horizontally open light out
let, a plural-plane mirror in said casing for inter
cepting light rays entering the casing through said
inlet and reflecting said rays through said out~
let, said mirror comprising a central ñat longi
tudinally inclined reflecting area having right
and left longitudinal edges which converge sub
4
light inlet and a horizontally open light outlet,
a plural-plane mirror in said casing for intercept
ing light rays entering the casing through said
inlet and reñecting said rays through said outlet,
said mirror comprising a central flat longitudi
nally inclined reflecting area having right and
left longitudinal edges, and two flat lo-ngitudi
nally inclined lateral reflecting areas having in
ner longitudinal edges extending along said lon
stantially to a point attone end of said central 10 gitudinaledges of said central reñecting area,
said two lateral reflecting areas being inclined
reflecting area, ‘and two flat longitudinally in
Y transversely at an obtuse angle to said central
clined lateral reflecting areas having inner longi
reiiecting area, whereby reflected rays will be
tudinal edges extending along said longitudinal
visible from a central point in front of said light
edges of said central reñecting area, said two lat
outlet and fro-m points to the right and left of
eral reflecting areas being inclined transversely
said central point, a supporting plate upon which
at an obtuse angle to said central reflecting area,
said mirror is mounted, and a ball and socket
whereby reflected rays will be visible from a cen
joint mounting said supporting plate in said cas
tral point in front of said light outlet and from v
ing fork pivotal adjustment, said joint having
points to the right and left of said central point,
0
means
for holding said supporting plate against
and means mounting said plural-plane mirror in
accidental
movement.
said casing.
3. In a smoke inspection device, an observation
ROBERT HUDSON WAGER.
unit comprising a casing having an upwardly open
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