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Патент USA US2260325

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` oct. 28,1941.v
Filed Aug. 3, 195g
2 Sheets-Sheet 1
Oct. 28, -1941.
Filed Aug; 5, 1958
2 sheets-sheet 2
jPatented Oct.
' 2,260,325
` 2,260,325
Ward Leathers, Haworth, N. J., assignor to
Quadrex Corporation, New York, N. Y.
Application August 3, 1938, Serial No. 222,817
2 claims. (Cl. 15-13)
cleaners. It is especially applicable to the c_an
My invention pertains to the nozzle or carpet
contactingportion of a vacuum-cleaner and has
to do particularly with that type of nozzle where
in motive power is used for beating the carpet.
The object of my invention is to produce such
power-driven beating device for use on any type
ister or hose-type machines now in use whether
built with horizontal or vertical axis; it is ap
plicable to the types of Vmachine that carry the
motor-blower-unit rigid with the operating han
dle, and with slight modification the device as
of vacuum-cleaner wherein the power available , , shown may be rigidly joined to- the conventional
bag-type cleaner.
Other objects will appear in the following de
tailed description of the invention, illustrated in
the accompanying drawings, of which:
Figure 1 is a longitudinal, diagrammatic cross-_
Figure 2 is a partially broken plan view of the
is separate and distinct from that used by the
motor of the motor-blower-unit. Where the
same source of power is used for both purposes
sacrifice of desirable characteristics _must be
made, i. e. where the beater is operated suf
ficiently slowly by a belt reduction to obtain a
none too fast beating cycle, the blower fan joined
to the motor shaft rotates too slowly to give
under side of the nozzle.
efficient, centrifugally-generated air-suction/air
A further object of my invention is to use an
Figures 3, 4, and 5 show side, top, and end views v
- respectively of the regenerative springs.
Figure 6 shows an application to a vertical
' electro-magnetic power-application other than a
rotary motor because where such an additional 20
motor is used for operating the beating equip
ment in a vacuum-cleaner nozzle the bulk is too
great and the nozzle too high to go under furni
axis canister-type machine.
Figure 'l shows a diagrammatic, partially
cross-sectioned view of a timer.
Figure 8 is a wire diagram.
A rigid, lateral, nozzle member I, Figs'. 1 and
ture. In that case it becomes almost another ' 2, preferably a die-casting, is covered by a flex
vacuum-cleaner in bulk and weight-` Such ar- ' ible rubber shoe 2. Die-casting I is joined'by
means of a hollow trunnion joint 3 to any means.
rangements have proved unsatisfactory. My ar
of air intake 4 to the vacuum-cleaner (where
rangment and power-application keep the noz
the nozzle is used on a conventional bag-type
zle small in bulk and suiiiciently low to pass un
cleaner this joint may be omitted). The type
der low furniture as is now possible with plain
30 of flexible trunnion joint as shown is fully set
_suction nozzles used on hose-type machines.
A further .object of my invention is to obtain
a. very amply powered oscillating mechanism
for beating purposes and to produce an electro
motively actuated, oscillating or beating mecha
nism with a minimum of electric complication, 35
forth in my co-pendingv application Serial No.
218,645'. A pair of electric conductors 5- supply
current to conductors 6 within the nozzle through
a flexible connection 1. Where this nozzle is>
applied to a hose-type machine the current is
provided by means described in my co-pending
application Serial No. 216,011. A beater bar 8,
vpreferably of hard fibre, runs substantially the
.have obtained this desired result by drivingthe
length of the opening on the under side of the
make-and-break or timing mechanism off the
40 nozzle and is joined to a supporting member 9
motor used for driving the suction blower.
vof substantially equal length made of magnet
A further object of my invention is to'produce
iron. This member is joined in suitable man
a beating mechanism ofthe above type, in the
ner to sections of clock-spring I0 which are in
type of nozzle which lifts the carpet -,from the
turn joined at their forward end, in a hingeable
floor, beats it, passes the incoming air over the
point of beating, makes-and-breaks the incom 45 manner, to the nozzle casting I. A rubber parti
tion'I2 joined to the top of the beater bar in
ing air for increasing its speed during pulsation,
suitable manner is also joined to the case I for
and to obtain such carpet lifting-and-beating
purposes of keeping the incoming dirt-laden air
function on all types of carpets, high or low4 pile,
within a confined nozzle chamber I2. Disposed
without any manual adjusting whatsoever; In
i. e., the complete elimination of current make
and-break mechanism in the nozzle itself.
other words, the nozzle is automatically adjusted 50 beneath the beater bar mechanism ljust recited
is a metal bed-plate I3 which is hingeably joined
to the carpet where heretofore nozzles for the
to the case I at points adjacent the junctures of
lifting-and-beatlng purpose have required ad
the clock-spring III. Anchored securely to the
- justments for different types of rug or carpet.
bed-plate is a series of electro-magnets I5 sup
My power-driven, oscillating, beating nozzle
is applicable to all types of portable vacuum- 55 plled'with coils I6. The beater bar 8, due to ‘
the springs I0, is free to move up and down in
any arcuate manner; the bed-plate with its mag
nets is free to move with respect to the nozzle
in a similar manner. The beater bar mecha
nism is disposed immediately above the electro
f magnets in such manner that when the magnets
are electrically activated, beater bar 8 is drawn
violently downward. Pads Il on the rigid nozzle
second. vThe duration of the impulse is deter-v
mined by the length of arc of the contact member
59 in the housing 43. ,
A wire diagram, Fig. 8, shows the coilsl i6 in ‘
the.nozzle wired in parallel from'the timer 32.
The motor 3i4 is controlled by the switch 62 on
the machine and the lamp 63 is parallel with the
’member- I and I8 on the bed-plate I3 aid in
In operation this nozzle beating mechanism
holding the nozzle suiiiciently free from the ñoor 10 functions by the laws of vibration. The electric
to permit suction-lifting of the carpet and the
impulses are so timed with respect to the char
intake of most of the admitted air at the front
acteristics of regenerative springs and oscillating edge of the nozzle which makes cleaning close
member as to amplify the vibratory action in the
to base-boards and the like practicable,
most eiiicient manner. When the weight of the
It is not the intention that the magnetic eüect 15 beater bar mechanism, the spring throw and re
should be sufñcient to do any suitable beating
sistance, the energy of magnetism, the timing
` - of the carpet were it not for the all-important
and duration of energization 'are in proper rela
tionship a very powerful oscillating motion is ob
in conjunction therewith.
tained on the beater bar. While .the speed of
Disposed at intervals along the beater bar 20 oscillation can be changed at will by the gear
mechanism Just described, aresprings 20. Figs.
ratio, this'speed must bear a correct relationship
3, 4, and 5, which regenerate the downward act
to the natural oscillatory periodof the moving
ing energy applied to the beater bar by the mag
parts in the nozzle.- When the best proportions
regenerative springs, hereinafter described, used
nets‘when the current is broken. Immediately
above these springs is ’a -substantially similar
, series of springs 2I for resisting the upward mo
- are obtained this electro-magnetic power device
reaches relatively high electro-motiveA eillciency
and the beating force obtainable with a modest
current (such as, 200 Yto 300 watts half the time)
tion of the beater bar and regenerating the over
l throw. A suitable separator- 22 is disposed be
is very ample for thepurposes set forth.
l tween these springs, and bracket-like supports 23
Having disclosed my invention in this specifi
3 hold the spring mechanism in fixedl relationship 30 cation suiïlcient for clear understanding by those
to the bed-plate I3. Notches 25 cut yin'the'mag
'familiar with these arts, I wishfto make noteof
net iron 9 permit a suitable telescoping of the
the fact that the constructions and methods used
' beater bar unit and the spring mechanism and
are susceptible towide variation in practice by
, suitably dispose a portion of the member 9 be
the application of mechanical skill, without de
tween the tips of the springs 20 and 2 I. It should 35 parting from the spirit an'd novel character of
be noted that these' springs are so designed as
my invention.
' '
to comprise a two-way-stop-spring-mechanism, .
What I claim is:
i i. e. the springs that may be deflected in their j
1. In a suction cleaning tool with a suction in- I
‘ desired direction only from a iìxed position.'
let having parallel lips forming the two longer
In Figure 6 I havevshown my nozzle applied 40 sides of said inlet, a4 carpet-agitating-beating
to a vertical axis canister hose-type vacuum
' i cleaner 30 in which the motor 3I (used for creat
1 ing the vacuum and hence the air-flow in the
` machine)- is geared to a timer 32 electrically con
‘ nected by leads 33 through a hose 34 and an ex
tension tube or' wand 35 to the nozzle 36. The
' ‘ extension tube'35 is also provided with a lamp
` and lighting device 31.
Any type of suitable timer .may be employed.
` A suitablev form, shown diagrammatically in Fig.
7, comprises a rotating carbon brush 40 support
'i ed in a holder 4I iirmly joined to worm-gear, 42,
, suitably housed in a case 43, driven by a worm on
`the motor shaft 44,> and electrically connected
`through leads 45 and 46. Make-and-break is ac
complishedl by methods ' common to ldistributors -
used on internal combustion engines. The speed
lcycle of this timer is establishable by the ratio
Ibetween worm-gear 42 and worm 44, and repre
sents that ratio with the R.l P. M. of thè motor.
For illustration, if the motor'normally turns 12,- .
member disposed between said lips and compris
ing an armature, an electro-magnet member also
disposed within said tool. said members pivotally
joined to one of said lips inwardly of the clean
mg tool and in suchmanner that> their weights
are carried'substantially independently of each
other and of the tool itself by the napped sur
face undergoing cleaning, and with means inter
posed between the said members for holding the
armature normally free from the electro-magnet. .
2. Inv a suction cleaning ‘tool with a. suction in
let having parallel lips forming the two longer
sides of said inlet. a carpet-agitating-beating
member disposed between said lips‘ and compris
ing an armature, an electro-magnet‘member also
disposed within said tool, said members pivotally
joined to one of said lips inwardly> of the clean
ing tool and in such manner that their weights .
are carried substantially independentlyl of each
other by the napped surface undergoing cleaning,
and a spring joined to one of said members and
000 R. P._M., a suitable speed for centrifugal air
positionedv to co-act with- the second said member
compressor common to vacuum-cleaners, andthe
when the said magnet intermittently and mag
`Bear ratio is 25 to 1. the electric impulses sent
netically pulls the two said members together.
from this timer to the nozzle-would be eight per 85
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