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Патент USA US2105334

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Jan. 11, 1938.
R. 'r. SCULLY ET AL
2,105,334
BRUSH FORMING APPARATUS
Filed Dec. 14, 1935
By
4 Sheets-Sheet l
Wan-'25 444/6
A TTORNEY.
Jan. 11, 1938.
R. T. SCULLY ET AL
2,105,334
BRUSH FORMING APPARATUS
Filed Dec. 14, 1955
4 Sheets-Sheet 2
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Jan. ‘11, 1938.
2,105,334
R. T. SCULLY El‘ AL
BRUSH FORMING APPARATUS
Filed Dec. 14, 1955
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R. 'r. SVCULLY ET AL
2,195,334
BRUSH FORMING APPARATUS
Filed Dec. 14, 1955
4 Sheets-Sheet- 4
12-4
50
INVENTORS.
P555 7 $cu¢4 y
BY
MLTC‘ZS AAA/6
A TTORNEY
2,105,334
Patented Jan. 11, 1938
UNITE
STATES
PATENT OFFlCE
2,105,334.
BRUSH FORMING APPARATUS
Rees T. Scully and Walter S. Lang, Pittsburgh, Pa.
Application December 14, 1935, Serial No. 54,467
12 Claims. (Cl. 300-2)
II of Fig. 1, and showing the bristles being ap
Our invention relates to brush forming ap
plied to the receiving core;
paratus particularly‘ designed for the manufac
ture of circular, cylindrical or rotary brushes
, of the type in which looped brush material bris
5; tles, i. e.,.hair, wire, ?bre, etc., are disposed on
the periphery of a core or brush body and main
Fig. 4, a cross-section taken on the line IV—I‘V
tained in position thereon by suitable means, such
of Fig. 3;
Figs. 5 to 9 inclusive, enlarged detail sectional
for example, as a binding wire.
In the commercial manufacture of brushes of
10; the type speci?ed, it has been the practice to
apply looped bristles to grooves on the core or
brush body by hand; the operator looping quan
tities of bristles beneath the clamping wire dur
ing the winding of the latter into the grooves.
15- This practice in addition to being slow and costly
is objectionable in that it is very dii?cult to ef
feet, a uniform distribution and thickness of the
layer of bristles applied.
Our invention contemplates a machine where
. in we provide automatically operable mechanism
2of for feeding and applying bristles to the periphery
of the core or brush body, or to the grooves there
of, in an effective and expeditious manner and
at the same time maintaining a uniform quantity
,1 of bristles and an even distribution thereof for
each of: the looped masses of bristles.
Among the novel features of our invention are;
a picker device for continuous delivery of a uni
form layer of bristles from a source of supply; a
‘ bending member for looping the bristles beneath
3Q.
and upwardly around a clamping wire; and a feed
screw means for receiving and conveying the
bristles in a continuous layer from the picker
device to the bending member, coacting with the
35: latter for maintaining the looped bristles in par
allel relation, and supporting and conveying the
looped bristles in the said relation from the bend
ing member to a rotating brush core to be ?lled.
By the use of the feed screws, we are enabled
40- to accurately provide a constantly uniform feed
or travel of the bristles identical with the periph
eral speed of the receiving core, and by simple
speed adjustment, the apparatus is readily
adapted to the ?lling of brush cores or bodies of
45, various diameters.‘
Additional objects and advantages will be
come apparent from the following description
taken 'in. connection with the accompanying
drawings, wherein:
50
Fig. 3, an elevational view of a preferred form
of apparatus for rotating the brush core during
the application of bristles thereto;
Fig. 1 is a plan view of an embodiment of our
invention, showing the same associated with a
cylindrical brush core for application of bristles
thereto;
.
v
'Fig. 2, a part elevational and part sectional
55' view, the section being indicated by the line II
views taken on lines V-V, VI—-VI, VII-VII,
VIII-VIE and IX—IX respectively of Fig. 2, 10‘
illustrating successive positions in the travel of
the bristles from the picker device to the receiv
ing core, as hereinafter more speci?cally de
scribed;
Fig. 10, an enlarged detail view of the picker 15
adjustment; and
Fig. 11, a diagrammatic view showing a means
of driving the screw conveyor device.
Referring to the drawings, 2 designates gener
ally a bristle supply device, including parallel
spaced upper and lower feed bars or ways 3 and N
4, providing a passage 5 therebetween for pas
sage of the straight bristles a. The bristles may
be inserted in the passage 5 by hand or by gravity
feed from a hopper 6, being moved forwardly in
said passage by means of a weighted pusher or
head ‘I. The bristles are fed in transverse rela
tion to the bars 3 and 4, and are centrally sup
5
ported by the latter. Suitable guides B con?ne
the ends of the bristles for maintaining the same
substantially parallel and even.
30
Positioned at the forward or discharge end of
the passage 5 and in the plane of the bristle-sup
porting bar 4, we provide a rotary picker de
vice in the form of a toothed wheel ID, the lat
ter being located midway and slightly above the
rear ends of a pair of spaced horizontal feed
screws or conveyors H and I2. The bristles are
fed into the provided spaces or pockets l3 between
picker teeth of the wheel ID by the action of the
feeder head ‘I, and are rotated or carried down
40
wardly for discharge transversely onto the upper
surfaces of the feed screws II and I2.
For the purpose of supporting the bristles in
their travel with the picker and for discharge 45
therefrom, the forward end of the lower feed bar
4 is provided with a downwardly extending arou
ate ramp l4, terminating at its lower forward
end midway between the rear ends of the feed
screws and slightly below the upper surfaces 50
thereof. At its upper end, the ramp is spaced
from the picker circumference only for clear
ance, but the space gradually increases down
wardly to a maximum at the terminal end of
the ramp.
55
2
2,105,334.
Supported from the upper bar 3 by adjustable
tact with the clamping wire 23, and the frictional
connections I5, we provide a pair of arcuate ?n
gers I 6, one on either side of the picker til, the
curved edges 1) of which are substantially coin
plemental with the forward surface of, the ramp
I4, to form a bristle passage 5a. therebetween,
said edges b of the ?ngers however being eccen
contact thus obtained is su?icient to support said
bristles during theremainder of their travel by
the feed screws to the receiving core A.
In this manner, the bristles are looped and uni
trically disposed with relation to the periphery of
the picker. The bristles will be out of the open
10 ends of the pockets at a point above the upper
surfaces of the feed screws, whereby the bristles
carried by the picker IG are deposited onto the
formly applied to the clamping wire 23, and by
reason of the synchronized action of the feed
screws, the terminal portions or ends of the bris
tles are positioned and maintained in correct up
right position, normal to the clamping Wire. ‘
10
Feed screws H and I2 preferably extend be
yond the disk 2I to a point directly over the
"
' brush core A, and are supported a distance back
It will be readily seen in Figs. 2 and 10, that
15 by varying the position of the ?ngers IS with
respect to the pockets I3 of the picker i and
the ramp I4, the volume of the bristle feed may
be adjusted in accordance with the requirements
from their free ends by backing~up rolls or worm
gears 30. These gears mesh with and aid in sup
porting the screws, while preventing any separa
screws.
,
of the brush or brushes to be ?lled, and a bristle
20 layer of any desired thickness or’ volume may be
thereby applied to the feed screws. The upper
feed bar 3 may also be adjustedby its suspension
brackets I'I to‘vary the bristle passage 5 as de
sired. Suitable guide plates 8a con?ne the ends
25
of the bristles‘during their travel in the, picker,
device to insure-proper alinement.
tion thereof due to the thrust applied particu
larly during the bending or looping of the bristles.
While we prefer to employ feed screws of the
tapered form illustrated, straight or uniform 20
diameter feed screws may be satisfactorily‘em-r
ployed without departing from our invention.
The tapered screws having small terminal ends,
have the added advantage of minimizing inter
ference with the bristles being applied to the 25.
core A, as shown in Fig. 9. The reduced ends of
The feed screws H and I2 are mounted at their '
rear ends in suitable bearings I 8 and are pro
bristles on the rotating core without injury to the
vided with meshing gears I9 and 20 respectively.
same.
30 The screws are of different form, screw II being
of right-hand thread and screw I2 being of left
hand thread, and are designed to be rotated in
synchronism' in opposite'directions for the pur
pose of simultaneously advancing corresponding
35 portions of each, thereby conveying the bristle
layer longitudinally while maintaining said bris
tles transversely thereof without angulation or
separation.
'
,
3
the screws pass through the previously applied
‘
In operation, the core or core section A, is 30'
rotated by any suitable means at a constant pre
determined speed.
Hence, knowing the' lead or
number of threads per inch of the feed screws
and the circumference of the core A, it is’ pos
sible to adjust the speed of the screws to feed the
bristles a at the peripheral speed of the core; and
since the clamping wire 23 is secured to the cir
cumference of and driven by the core, the ‘wire
2I designates a bending device in the form of a
40 disk which is mounted for rotation between the
and bristles travel at the same rate of speed.
feed screws II and I2 forwardly of the picker It).
This bending device or ‘disk has a peripheral
groove 22, for receiving a continuous ‘strand, of
bristle clamping wire 23 fed from a tension roll
45. 24. The wire 23 passes along the under portion
of the disk between the feed screws and thence
are driven at a peripheral speed equal to the feed
of the screws, whereby it will be seen that the en-vv
tire travel of the bristles from feed supply to the
core is at a constant speed equal to the periphera
speed of the core or core section A.
‘
vice in the manner stated, we have shown gear
where it is secured by any suitable means 25 with
and chain drive, but it is obvious that other means‘
may be employed with like result. As illustrated
The
50 wire is wound several times upon the roll 26 and
is fed thereto from a reel or‘ other source of
supply (not shown) through afriction clamp 21.
Roll 24 is mounted on a transverse shaft, which
shaft is secured by its ends in adjustable‘ split
55 bearings 28 adapted for regulating the required
tension on the wire.
'
‘
'
In addition to'the peripheral groove 22 the
bending disk 2| is preferably serrated, providing
?ne teeth 29 for positive engagement with the un
60 supported center portions of ‘the bristles a, the
latter'being presented transversely to the rotation
of the disk by the feed screws II and I2. " Bb'
designates suitable guides for the bristle ends
during their travel from the picker iii to the
bending disk 2|.‘
’
'
.
'
'-
'
>
The action of the bending disk ‘BI is clearly
illustrated in Figs. 2, 7, and 8, wherein it is shown
that the disk bends'the bristles centrally down
ward between the feed screws for looping the
70 bristles beneath the clamping wire 23 carried by
the disk. ’ Since the direction of rotation of adja
cent portions of the feed screws I I and i2 isup
ward, as indicated by the arrows, the resulting
wiping action thereof urges the lower or looped
75 portions of the bristles a upwardly into ?rm con
45
For driving the feed screws and the picker de
outwardly to the brush core or core section A,
in the bristle-receiving groove 25 thereof.
65
Likewise, the picker I0 and bending disk 2I
a motor M is coupled with a Reeves drive or 50
other variable speed mechanism, diagrammati
cally indicated at 3|, from which a sprocket and’
chain drive 32 drives a jack shaft 33. A pinion
34 on this shaft drives one of the feed screw
gears I 9 through an idler 35, and gear I9 in turn
drives the other feed screw gear 20, as in Fig. 11.
A worm 38 on shaft 33 drives a cross shaft 31
by a worm gear 38, and said shaft also drives the
picker shaft 39 by a sprocket and chain drive 40.
4| indicates a sprocket and chain drive for driv-' 60,
ing the bending disk shaft 42 from the picker
shaft 39.
' '
The respective drive ratios of the mechanism‘
are so'proportioned as to synchronize the periph.-‘
eral speeds of the picker and bending disk with‘
the feed of the screws II and I2 for'the ‘purpose
described. Adjustment of the mechanism for
?lling brush cores of various diameters is effected‘
by simple adjustment of the variable speed de
vice 31, as will be readily understood.
'
70'
Various means may be provided for mounting‘
and rotating the brush cores for ?lling by the
device described. For example, we have illus
trated a frame or bed B having longitudinalrails
or ways 43 upon which a carriage C is slidablyv 753.
2,105,334
mounted, this carriage comprising a tail stock 44
and a head stock 45 connected by suitable mem
bers
Both the head and tail stocks are pro
vided with upper and lower rollers 41 for en
gaging the rails 43 for longitudinal movement of
the carriage thereon.
Suitable centering devices are provided in the
tail and
stocks for rotatably supporting the
brush body r core A therebetween. and the mem
bers
have adjustable means 48 in connection
with the tail stock. 44, for accommodating the
carriage to cores of various lengths.
The shaft 43 of the head stock is mounted for
rotation in suitable bearings, and mounts a pul
ley
driven from a second pulley 5! by a belt
5'2. The pulley El is slidably mounted on a
3
are tightly secured by the tension of the clamping
Wire.
Various changes and modi?cations are con
templated within the scope of the following
claims.
We claim:
1. In brush making apparatus, means for sup
porting and rotating a brush core, a screw con
veyor including a pair of screw threaded members
leading directly to the core for conveying and 10
depositing bristles onto the core, a bristle bending
disk disposed intermediate the ends of the con
veyor between the screws and cooperating there
with for bending and looping bristles prior to
deposit on the core, said screw members being
square or splined drive shaft 53 between spaced
abutments
on the carriage, said pulley having
a plurality
rollers 55 for assisting in the; slid
ing action thereof.
The drive shaft 53 is driven at constant speed
closely spaced to engage opposite sides of the
loop portions of the bristles, and means for feed
ing a wire under tension to the bristles, said
bending disk acting against the tension on the
wire.
2. In brush making apparatus. means for sup
by a motor P through a speed reducing device
porting and rotating a brush core, a screw con
diagrammatically indicated at 56.
The weight of
the
rlage and the core A thereon is counter
I balanced by a weight W to facilitate sliding
l7) A
thereof.
In ?lling brush cores or core sections having a
ingle circular groove, it is merely necessary to
rotate the
through one revolution, but in
other cores such as the cylindrical spiral grooved
core illustrated, it also becomes necesessary to
translate said core longitudinally.
For this purpose, we prefer to employ a variable
f suitable form, including a toothed rack
-- ., nted on and extendingllongitudinally of
the carriage C, and movable by a meshing gear 6 l.
5i, and therefore the rack and car
riage, aw driven from the shaft 53 by a variable
belt drive
or other suitable means, through
connecting bevel gearing 63, whereby the carriage
and its core A may be translated at a regulated
speed. During such movement, the drive pulley
5i slides along its shaft 53, and at the same time
drives the pulley 59 to rotate the core A, the
speeds of translation and rotation of the core A
beingconstant during the entire ?lling operation.
The brush ?lling mechanism is mounted in any
suitable manner adjacent the bed B of the core
rotating device, with the feed screws H and i2
thereof extending transversely of and terminat
ing directly over the core A. In order to ac
commodate the ?lling mechanism to cores of vari
ous diameters, the base or plate 58 mounting this
mechanism, as well as the motor M and variable
, speed means iii, are vertically adjustable by
means of threaded supports 59 or the like.
In. operation, the clamping wire 23 is threaded
in the machine and secured by means 25 to the
core A in one terminal end of the bristle-receiv
ing groove
and suitable tension is applied
thereto by means 28 associated with roll 212.
The bristle feed mechanism is started, and a
continuous layer of bristles a is fed through the
bending disk 2i and thence to the core A in looped
relation.
Upon the , bristles reaching the core
the latter is rotated by motor P, and with both
feed mechanism and core in motion, the spiral
groove is continuously ?lled until completed,
whereupon the motors P and M are shut off and
the wire ‘23 is secured to the core to complete and
secure the ?lling of the brush.
It will thus be seen that by our invention, the
bristles are automatically and uniformly fed and
?lled into the grooved receiving core, where they
veyor including a pair of oppositely rotatable
screw threaded tapered members leading directly
to the core for conveying and depositing bristles
onto the core, a bristle bending member disposed
intermediate the ends of the conveyor between
the screws and cooperating therewith for loop
ing bristles prior to deposit on the core, said screw
members being closely spaced to engage opposite 30
sides of the loop portion of the bristles, and
means for feeding a wire under tension to the
bent bristles.
3. In brush making apparatus, means for sup
porting and rotating a brush core, means for 35
conveying and depositing bristles directly onto
the core comprising a pair of oppositely rotat
able spaced screw threaded members. a rotatable
bristle bending member operable between the
screws and coacting with the threaded members
for looping the bristles prior.to deposit on the
core. said screw members being closely spaced
to engage opposite sides of the loop portion of
the bristles and to convey the bristles after being
looped, and wire feeding means for feeding a 45
wire to the bent bristles.
4. In brush making apparatus, the combina
tion with a rotating brush core having grooves on
the periphery thereof, of a pair of closely spaced
oppositely threaded and oppositely rotating feed 50
screws for delivering bristles directly to the
grooves of the core, the feed of the screws being
equal to the peripheral speed of said rotating
core, and a rotatable bristle bending member co
operating with the screws and disposed inter— 55
mediate of the ends thereof.
5. In brush making apparatus, the combina-'
tion with a rotating brush core, of a pair of closely
spaced feed screws, a picker device for delivering
uniform layers of bristles onto and transversely
of the screws, a bending member disposed inter
mediate the ends of the screws for looping said
bristles between the feed screws and about a
clamping wire, said looped bristles being sup
ported by the feed screws and conveyed thereby
directly to the rotating core.
6. In brush making apparatus, the combina
tion with a rotating brush core, of a pair of closely
spaced feed screws, 2. picker device for delivering 70
bristles onto and transversely of the screws, a
rotating bending disk disposed intermediate of
the ends of the screws for looping said bristles
between the feed screws and about a clamping
wire, said looped bristles being engaged on op 75
I 4
2,105,334
posite sides thereof by the feed screws and con
veyed thereby directly to the rotating core.
7. In brush making apparatus, the combina
tion with a rotating brush core, of a pair of
closely spaced feed screws, a picker device and
means associated therewith for delivering bris
tles in uniform layers onto and transversely of
the screws, a rotating bending disk disposed in
wire adapted to be wound upon said core under
tension, means spaced from the core for bending
and looping a supply of bristles beneath the wire,
and means for supporting and conveying said
looped bristles from the bending means to the 5
core, said conveyor means including a pair of
oppositely threaded and oppositely rotating feed
screws for frictionally engaging the bristles,
whereby the looped portions of the bristles are
maintained in contact with the clamping wire. 10
11. In brush making apparatus, the combina
bristles being supported by the feed screws and tion with a rotating brush core, of a clamping
conveyed thereby directly to the rotating core, wire adapted to be wound upon said core under
the peripheral speed of the bending disk and the tension, means spaced from the core for bending
feed of the screws being equal to the peripheral and looping a supply of bristles beneath the wire, 15
and means for supporting and conveying said
speed of said core.
looped bristles from the bending means to the
8. In a brush making apparatus, a screw con
core, said conveyor means including a pair of
veyor, means for delivering bristles onto the con
veyor in uniform layers, and a bristle bending oppositely threaded and oppositely rotating feed
member associated with the screw conveyor, said screws for frictionally engaging the bristles,
delivering means being adjustable to change the whereby the looped portions of the bristles are
thickness of the layers of bristles.
maintained in contact with the clamping‘ wire,
9. In brush making apparatus, the combina
the feed of the screws being equal to the travel
tion with a rotating brush core, of a clamping of said wire.
wire adapted to be wound upon said core under
12. In a brush making apparatus, the combina 25
tension, means spaced from the core for bending tion with a rotatable brush body, means-for ro
and looping a supply of bristles beneath the wire, tating the brush body at a predetermined speed,
and means for supporting and conveying said a screw conveyor for brush bristles, means for
looped bristles from the bending means to the delivering bristles to the conveyor, said conveyor
core, said conveyor means including a pair of extending from the delivery means to the brush
rotating screw members engaging the bristles on body, means for looping said bristles disposed
opposite sides of their looped portions, said mem
intermediate of the ends of the conveyor, and
bers rotating in opposite directions in frictional means for rotating the screw conveyor and the
termediate of the ends of the screws for looping
10 said bristles between the feed screws and about
a clamping wire secured to the core, said looped
15
20
7
25
30
contact with said bristles, whereby the looped
portions of the bristles are maintained in con
tact with the clamping wire.
10. In brush making apparatus, the combina
tion with a rotating brush core, of a clamping
looping means synchronously with the rotation
of the brush body.
35
REES T. SCULLY.
WALTER S. LANG.
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