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Патент USA US3072331

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Jan. 8, 1963
3,072,321
J. F. KING, JR
UNIVERSALLY MOUNTED CEILING CLEANER FOR TEXTILE WORK ROOMS
Filed oct. 5, 1960
3 Sheets-Sheet 1
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INVENTOR
James E King Jr
BY/P‘
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ATTORNEY
Jan. 8, 1963
3,072,321
J. F. KING, JR
L-INIVERSALLY MOUNTED CEILING CLEANER FOR TEXTILE WORK ROOMS
:s“ Sheets-Sheet 2
Filed Oct. 5, 1960
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‘INVENTOR
James F king
‘BY/3w W- WLPWM
ATTORNEYS;
Jan. 8, 1963
J. F. KING, JR
3,072,321
UNIVERSALLY MOUNTED CEILING CLEANER FOR TEXTILE WORK ROOMS
Filed Oct. 5, 1960
3 Sheets-Sheet 3
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James F K1375 J’
United States Patent @?dce
1
3,072,321
UNKVERSALLY M’QUNTED CEILING CLEANER
FGR TEXTHLE WORK RQOMS
James F. King, Jr., 1001 S. Marshall St,
Winston-Salem, N.C.
Filed Oct. 5, 1960, Ser. No. 60,620
8 Claims. (Cl. 230-255)
The present invention relates to universally mounted
3,h72,32l
Patented Jan. 8, i963
2
Fl "1. 3 is an end view of the fan casing as seen from
the ai outlet end;
Fit}. 4 is an enlarged view in vertical section of the
upper portion of the yoke and gear box;
FIG. 5 is an electrical circuit diagram showing the man
ner of furnishing power to the fan motor and gear motor
unit; and
HG. 6 is a diagrammatic view included for the purpose
of graphically illustrating the manner in which the im'
fans and more particularly to an improved construction 10 proved fan operates.
for use in textile work rooms for blowing oil the ceiling
With reference now to the drawings and in particular
so as to keep it lint-free.
to FIG. 1, the entire cleaner mechanism is comprised of
As is well known, lint accumulation in textile work
a very—high-velocity fan 10 driven by an electric motor 11,
rooms such as on the machinery operating in the room or
the fan being enclosed within an air-directing casing 12
on the walls and ceiling is to be avoided wherever pos 15 which converges in the direction of the air ?ow and which
sible. Various types of air-blast cleaners have been de
is provided with a plurality of curved stationary blades
signed for removing the lint as fast as it becomes de
posited. Traveling cleaners for blowing off lint from the
13 which serve to straighten the air ?ow so that air is
directed axially outward in the form of a narrow beam as
machinery as well as the walls and ceiling are extensively
distinguished from other fan constructions wherein the
used and similar cleaners have been designed for sweep 20 air stream diverges as soon as it leaves the vicinity of the
ing the ?oor and aisle areas. This invention is concerned
fan. The fan casing 12 is provided with horizontal trun
with an improved construction for a ceiling mounted sta
nions 14 which serve to mount the fan and casing assem
tionary type of cleaner, as distinguished from one which
bly at the lower ends of an inverted U~shaped yoke i5
travels, which is designed to keep a particular ceiling area
for reciprocatory motion about the trunnion axis through
25 a predetermined vertical angle by means of a. motor driven
free from lint.
A principal object of the invention is to provide a uni
crank mechanism which will be later described in more
versally mounted fan or cleaner of the type described
detail.
which rotates as a whole about a vertical axis and wherein
The U-shaped yoke 15 is mounted on a depending hol
the fan itself simultaneously oscillates about a horizontal
low vertical shaft 16 which is ?xed to the ceiling 17 of
axis so that the air stream from the fan oscillates through 30 the textile processing room. Preferably, the upper por
a vertical sweep angle which can extend from horizontal
tion of the support shaft is provided with a spherical
to near-vertical. The construction and operation of the
bearing type of supporting element in a cap is which, in
fan, as will be more clearly explained, are such that the
turn, is bolted to the ceiling. This spherical cap allows
entire ceiling area within reach of the air stream will be
the support shaft 16 to be connected to sloping ceilings or
generally cleaned with a large, diffused volume of air at 35 other structures which are not horizontal and still allow
a distance on each revolution of the fan about its vertical
the main body of the cleaner to be suspended in a vertical
axis, and wherein each and every ceiling point is attacked
position. To maintain the support shaft in a vertical
periodically with a high velocity central cone of air in
position, one or more divergent support braces 19 can be
order to provide a more thorough cleaning of areas which
attached as indicated in FIG. 1, the braces being attached
40
may be particularly troublesome.
at one end to the shaft by means of a two-part clamp Ed
Another object is to provide a universally mounted fan
and being attached by bolts 2i. to the ceiling at their oppo
of the type described in which means are provided for
site ends. Integrate into the structure of the upper, hori
automatically cutting oil the fan for any predetermined
zontal portion of the U-shaped yoke is a cast box 22
number of degrees of fan assembly rotation. This feature
which is supported from the lower portion of shaft to by
permits one to “shadow” certain areas of the mill such
45 means of a combination of radial and thrust bearing struc
as walls or room obstructions which would otherwise
ture 23, 24 so that the yoke holding the fan assembly can
cause objectionable down-drafts that may interfere with
rotate about the axis of the support shaft. The details of
textile manufacturing operations in progress on the mill
this construction are shown in FIG. 4. Arranged later
floor.
ally of the cast box 22 is a gear motor unit 25 which corn
A more speci?c object of the invention is to provide
prises an electric motor and a gear train mechanism ter
a universal type or" fan for cleaning off ceilings of tex
minating in two opposite extending output shafts 2a and
tile mill work rooms, the fan being suspended from the
The motor speed and gear train transmission is such
ceiling and being comprised of a motor driven fan and
that the horizontal output shafts 2a and 2.’? make one
associated casing mounted by horizontal trunnions at the
revolution in each 71 seconds. A small spur gear 28 is
lower end of an inverted U~shaped yoke which, in turn, 55 connected to shaft 26 within the cast gear box 22 and
is mounted for rotation about the vertical suspension axis.
this gear is meshed with a larger spur gear 29 also in the
Rotation of the yoke about the vertical axis, and oscilla
gear box and which is ?xed to a shaft 3d that is mounted
tion of the fan and casing about the horizontal trunnion
in anti-friction bearings 31’ for rotation about a horizon
axis are elfected by means of single gear motor unit
tal axis. Fixedly mounted on the shaft 30 is a much
mounted on the yoke and featuring two output shafts, one
smaller diameter bevel gear 31 that meshes with a larger
of such shafts being used to oscillate the fan audits casing 60 diameter stationary bevel gear 32 secured by bolts 33 upon
and the other being used to rotate the yoke.
the lower portion of the stationary vertical support shaft
The foregoing as well as other objects and advantages
16. Consequently, when the gear motor 25 is being
inherent in the invention will become more apparent from
operated, the output shaft 26 working through the spur
the following detailed description of a preferred embodi
gear set 28—2@ and the bevel gear set 3l--3-2 rotates the
ment and from the accompanying drawings which illus~ 65 yoke 15 and fan asembly in a very slow manner about the
trate the same. In these drawings:
axis of the support shaft. The gear ratio is so selected
FIG. 1 is a perspective view of the complete universally
that the entire yoke and fan assembly, on a continuous
mounted fan suspended from the ceiling of a work room
duty basis, makes one complete revolution in approxi
in a textile mill;
mately 18 minutes.
70
FIG. 2 is a view in side elevation of the yoke and fan
In order to electrically connect the fan motor 11 and
assembly with certain parts shown in section;
gear drive motor unit 25 to a source of power, it ‘will be
3,072,321
seen from F185. 3 and 4 and from the electrical wiring
diagram of FIG. 5 that a two-conductor cable connected
to a suitable source of electric power enters the spherical
cap 18 and extends downwardly through the hollow sup
port shaft 16 where it emerges in the gear box 22. The
conductors
35 in the cable are connector 1'
ively
to a pair of parallel spaced slip rings
37 of electrically
conductive material surrounding the shaft and electrically
insulated
of insulating
therefrom
material
and
secured
whica toareshaft
carried
in by
by means
a collarot
set screw 39.
One set of brushes
which rotate vi
5,
the axis of the fan casing as indicated in FIG. 3. The
convergent casing 12 thus serves to reduce the air pres
sure and increase its velocity which holds the air stream
together longer in a directed “beam,” and the straightener
vanes ‘'13 serve to turn the air in the casing so as to flow
along the axis of the casing.
While the cleaning machine can be operated on a con
tinuous basis, a timer
can be incorporated in the con
trol so that the mechanism will run in a periodic masher.
For example, a duty cycle can be established three the
timer So which will permit the mechanism to run for
the yoke assembly engages the slip rings and serves to
only 31/2 minutes out of every half-hour of mill room
carry electrical power to the gear motor unit 25.
operation. This has been found satisfactory to provide
good ceiling cleaning in a high-lint condition.
A sce
ond set of brushes 42 which also rotates with the yoke
assembly engages the slip rings and serves to carry elec
trical power to the fan motor ll.
In certain installations where it may be desirable to
“shadow” certain areas of the mill, such as walls or room
obstructions which Would cause objectionable down
drafts that may disturb the textile processing operation in
progress on the mill floor, the power circuit to the fan
motor may include a cam operated switch whicl will
function to open only the fan motor circuit for any pre
determined number of degrees of rotation of the yolte
assembly. In the illustrated embodiment, this feature is
incorporated into the structure by means of a disc type
cam 42 which surrounds the lower portion of shaft 16
within the gear box 22 and is secured about the shaft by
The overall gear ratio, which is the combination of
the spur gear set ELL-29 and the bevel gear ‘set 31-452,
is 15.25 to 1. It is thus a mixed number rather than
a whole number. The gear motor loaded speed is ap~
proximately one revolution in 71 seconds. That is, the
two oppositely extending shafts 26, 27 make one revolu
tion each 71 seconds and the fan yoke rotation for con
tinuous duty is one revolution in approximately 18 min
utes.
With reference to FIG. 6, it Will be seen that the
air beam reciprocates vertically through approximately
80° from a horizontal position, and the curve shows the
movement and location of the centerline of the air blast
for a full 360° of machine rotation in azimuth. It will
be noted from this curve that the ?rst pass, which is the
?rst revolution, originates at 0° and ends at 360°. How
the same bolts 33 which hold on the bevel gear 32. The
cam operator is constituted by a roller
which rides 30 ever, the vertical movement of the air beam starts at
in contact with the periphery of the cam d2, the roller
43 serving to actuate an electric switch 44;, the contacts
of which are connected in one side of the circuit leading
from the brushes 41 to the fan motor ll. Thus, when
the switch contacts are opened, fan motor ll will cut oil,
but the yoke assembly 15 continues to rotate about the
axis of shaft 16 so long as the slip rings as, 37 are elec
tri?ed. The position or positions at which the fan motor
11 may be cut oil, and the period of the cut off will be
determined by the particular contour of the cam periphery
which is required for the particular conditions encoun
tered in the mill room.
As seen in FIG. 2 th other output shaft 27 from the
gear motor unit 25 serves to rotate a crank arm 45
iounted thereon and which is articulated to one end of
a connecting rod 46. The other end of rod 46 is articu
lated to the fan casing 12 at a point 47 on the latter later
ally of the trunnion axis so that as the crank arm 45 is
0° rotation in the horizontal plane and ends at 360° of
rotation at a vertical distance from the horizontal of ap
proximately 1/3 of its total vertical stroke.
This is
attributable to the fact that the gear ratio is a mixed
number, i.e. 15.25 to 1 which means that the cleaner will
describe a mixed number (151/4) of vertical cycles or ex
cursions for each 360° revolution of the yoke.
Since
the air beam ended the ?rst pass or the ?rst revolution
with the fan part way up on its vertical stroke, the sec
ond revolution is actually started with the fan in this posi
tion and at the end of 360 additional degrees, the fan
will end up at the top of its vertical stroke. In other
words, because of the gear ratio, the vertical movement
of the air blast varies 1A of a horizontal cycle or 5.902°
per revolution. Therefore, the paths on the revolutions
of the progression 1, d, 9, 13, etc., will fall exactly on
the same path.
Thus, the cleaner will make a “repeat”
cycle and cover the same area one revolution out of
four. This permits one to generally clean the area of
rotated, the fan casing 12 and fan will be caused to oscil
late, for example, between a horizontal position as shown 50 the ceiling within the in?uence of the fan with a large,
in FIG. 2 to a near vertical position, e.g. 10° from verti
cal. If desired, the oscillating angle of the fan casing
can
with be
a row
madeofadjustable
spaced holes
by providing
48 for attaching
the crank
the arm
pitman
rod 46, thus providing for a corresponding adjustment in
the effective length of the crank arm 45.
As seen in FIGS. 1 and 2 the casing 12 for the fan It
has a converging tapered con?guration in the direction of
air flow which establishes a vena contractor 4-‘) well be
diffused volume of air at a distance on each revolution,
but on each fourth revolution to attack the same point at
a distance with the high-velocity central cone of air for
more thorough cleaning of areas which may be trouble
some. This arrangement therefore serves to shorten the
cycle time and allows more satisfactory cleaning with
less actual operating time on the cleaner.
In conclusion, While I have herein described and illus
trated one embodiment of a universal fan embodying my
yond the fan location, and the interior of this casing is 00 invention, it is to be understood that various changes and
also preferably provided with the plurality of equally
spaced lint-free straightener vanes 13 as previously de
scribed to eliminate the swirl from the air stream im
parted by the fan. The combination of the vena contrac
tor and straightener vanes serve to con?ne the air stream 65
to a small-diameter “beam” at a relatively great distance
from the cleaner and thus enhance its directional char
acteristic. In the present embodiment, there are four of
these straightener vanes 13 arranged 90° apart about the
axis of the fan casing.
These vanes have a radially ex
tending planar blade portion 13a for the distance “a” in
FIG. 2 which then merges into an arcuate portion 13b
of progressively decreasing width, the rear end of each
blade reaching zero width at point “[1” and the total blade
curvature corresponding to an angle of about 30° about 75
modi?cations may be made in the construction and ar
rangernent of component parts without, however, depart
ing from the spirit and scope of the invention as de?ned
in the appended claims.
I claim:
1. In a fan device having a universal movement, the
combination comprising a U-shaped yoke, means mount
ing said yoke for rotation about a vertical axis, a motor
driven fan and air director casing assembly mounted in
said yoke on horizontal trunnions for producing an air
beam normal to the trunnion axis, and common drive
means operatively connected with said yoke and with
said assembly for rotating said yoke about said vertical
axis and simultaneously oscillating said fan and easing
assembly about said trunnion axis, the number of ex
5
3,072,321
cursions of said fan and easing assembly for one complete
revolution of said yoke being a mixed number.
6
put shaft with said fan and casintr assembly for convert
ing rotation of said second output shaft into an oscilla
tory movement of said fan and casing assembly about
the trunnion axis in the upper hemisphere, the number
of excursions of said fan and easing assembly for one
complete revolution of said yoke being a mixed number.
2. In a fan device having a universal movement, the
combination comprising a U-shaped yoke, means mount
ing said yoke for rotation about a vertical axis, a motor
driven fan and air director casing assembly mounted in
said yoke on horizontal trunnions for producing an air
6. In a fan device having a universal movement for
beam normal to the trunnion axis, a gear motor unit
cleaning off the ceiling of a textile room, the c0mbina~
supported by said yoke, said gear motor unit having ?rst
tion comprising a U-shaped yoke, a vertical shaft depend—
and second rotary output shafts, a ?rst power train 10 ing from the ceiling for suspending said U-shaped yoke
means interconnecting said ?rst output shaft with said
in an inverted position for rotation about the shaft axis,
yoke for converting rotation of said ?rst output shaft into
a motor driven fan and air director casing assembly
rotary motion of said yoke about said vertical axis, and
mounted in said yoke on horizontal trunnions for pro
a second power train means interconnecting said second
ducing an air beam normal to the trunnion axis, a gear
output shaft with said fan and casing assembly for con 15 motor unit supported by said yoke, said gear motor unit
verting rotation of said second output shaft into an oscil
having a pair of output shafts, means including a gear
latory movement of said fan and casing assembly about
train driven by one of said output shafts for rotating
the trunnion axis, the number of excursions of said fan
said yoke about its vertical axis, and means including a
and casing assembly for one complete revolution of said
crank rotated by said other output shaft and a connect
yoke being a mixed number.
20 ing rod articulated to said crank and to said fan and
3. In a fan device having a universal movement, the
easing assembly for oscillating the latter about the trun
combination comprising a U~shaped yoke, means mount
nion axis in the upper hemisphere, the number of ex
ing said yoke for rotation about a vertical axis, a motor
cursions of said fan and casing assembly for one com
driven fan and air director casing assembly mounted in
plete revolution of said yoke being a mixed number.
said yoke on horizontal trunnions for producing an air 25
7. In a fan device having a universal movement for
beam normal to the trunnion axis, a gear motor unit sup
cleaning off the ceiling of a textile room, the combina
ported by said yoke, said gear motor unit having a pair
tion comprising a U-shaped yoke, a hollow vertical shaft
of output shafts, means including a gear train driven
depending from the ceiling for suspending said U-shaped
by one of said output shafts for rotating said yoke about
yoke in an inverted position for rotation about the shaft
its vertical axis, and means including a crank rotated
axis, a motor driven fan and air director casing assem
by said other output shaft and a connecting rod articulated
bly mounted in said yoke on horizontal trunnions for
to said crank and to said fan and easing assembly for
producing an air beam normal to the trunnion axis, a
oscillating the latter about said trunnion axis, the number
gear motor unit supported by said yoke, said gear motor
of excursions of said fan and easing assembly for one com
having a pair of output shafts, means including a gear
35 train driven by one of said output shafts for rotating said
plete revolutoin of said yoke being a mixed number.
4. In a fan device having a universal movement for
yoke about its vertical axis, means including a crank
cleaning off the ceiling of a textile work room, the com
rotated by the other output shaft and a connecting rod
bination comprising a U-shaped yoke, a vertical shaft
articulated to said crank and to said fan and casing assem
depending from the ceiling for suspending said U-shaped
bly for oscillating the latter about the trunnion axis in
40
yoke in an inverted position for rotation about the shaft
the upper hemisphere, the number of excursions of said
axis, a motor driven fan and air director casing assembly
fan and easing assembly for one complete revolution of
mounted in said yoke on horizontal trunnions for pro
said yoke being a mixed number, a pair of slip rings
ducing an air beam normal to the trunnion axis, and com
mon drive means operatively connected with said yoke
mounted on the lower part of said shaft and brush means
and with said assembly for rotating said yoke about said
shaft axis and simultaneously oscillating said fan and
easing assembly about said trunnion axis in the upper
hemisphere, the number of excursions of said fan and
easing assembly for one complete revolution of said yoke
for supplying electrical power to said fan motor and to
said gear motor unit from a cable extending downwardly
rotatable with said yoke and contacting said slip rings
through said shaft and which is connected to said slip
rings.
8. A fan device as de?ned in claim 7 and which fur
50
being a mixed number.
ther includes a cam mounted on said support shaft, a
5. In a fan device having a universal movement for
cam follower rotatable with said yoke and electrical
cleaning off the ceiling of a textile room, the combination
switch means actuated by said cam follower, said switch
comprising a U-shaped yoke, a vertical shaft depending
means being connected in the circuit leading to said fan
from the ceiling for suspending said U-shaped yoke in an
inverted position for rotation about the shaft axis, a mo 55 motor but not to said gear motor unit so as to cut off
said fan motor for a predetermined portion of the rotation
tor driven fan and air director casing assembly mounted
of
said yoke.
in said yoke on horizontal trunnions for producing an air
beam normal to the trunnion axis, a gear motor unit sup
References @ited in the ?le of this patent
ported by said yoke, said gear motor unit having ?rst
and second rotary output shafts, a ?rst power train means 60
UNITED STATES PATENTS
interconnecting said ?rst output shaft with said yoke for
converting rotation of said ?rst output shaft into rotary
motion of said yoke about said vertical axis, and a sec
ond power train means interconnecting said second out
1,246,967
1,480,721
1,939,481
McEwen ____________ __ Nov. 20, 1917
Glasser _____________ __ Jan. 15, 1924
Albers _____________ _.. Dec. 12, 1933
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