Year: 1896

page_text: Date of Application, 13th Feb., 1896
Complete Specification Left, 16th Oct., 1896-Accepted, 21st Nov., 1896
tubes omitted.
Figure 8 is a vertical longitudinal section with parts omitted.
Figure 9 is a vertical section showing the manner of making the head of the.
drum air tight.
Figures 10, 11 and 12 are sections on an enlarged scale showing modes of
securing the tubes to the drum.
Figure 13 is a perspective of one of the openings for the insertion of the ring-end
of a collecting tube; the dotted lines on Figures 10 and 13 showing the position
of a ring in inserting and withdrawing it.
Figure 14 is a vertical section through the discharge cap.
The two end standards 1 are formed at their upper ends with rings 2 in which
fit and turn the rims 3 which constitute the ends of the drums 4. The heads 5 of
the drum are held to the rings 2 by brackets 5ª, a packing 6 being placed between
the heads and the inner face of the rims 3 so as to make a tight joint, and a strip
of flexible material 7 extends from a ring 8 which may be of wood, to a ring 9 set
inside the rim 3 so as to make an air tight joint at the junction of these parts. The
body of the drum 4 is preferably made of wood its ends fitted in recesses 10 in the
rims 3. In the periphery of the drum 4 are formed a number of holes 11 to receive
the lower ends of the dust collecting tubes 12 which are made of suitable reticulated
or textile material. The holes 11 are recessed at 13 to form seats for rings 14
attached to the inner ends of the tubes 12. The upper end of each tube 12 has a
solid head 14 which may be of wood; it has a peripheral groove 15, so that when
the tube is drawn up around the head it is secured by a wire 16 passed around the
tube and so pressing it into the groove 15. Thus the fabric composing the tube
can be drawn tight, and can be readily disconnected from the head by simply
loosening the wire. In order that the tube may be stretched evenly throughout

page_text: Its rengen, it is made of two longitudinal sections 17 and joined by the opposite
seams 18. The tubes might be made in one piece with a single seam but when it
is made in that way the fabric cannot be drawn so as to make all sides of the tube
even and alike as when the tube is made in two sections. As the circumference at
the outer ends of the tubes is greater than that at the inner ends, or circumference of
the drum 4, the heads 14 are made obloug so that the tubes taper as shewn.
holes 11 are in parallel lines so that there are rows of tubes extending from end to
The
end of the drum in line with each other, and thus each row is brought over the
cut off chamber, and conveyor as will be hereafter described. The upper ends of
the tubes are sustained by longitudinally extending bars 19, a bar for each row,
connected to the tubes by bolts 20. The ends of the bars fit over pins 21 projecting
from the upper ends of arms 22 extending from the rims 3 and secured to flanges 23
projecting from the rims. The bars can slide on the pins 21 and are pressed
outwards by springs 24 so that the tubes are held normally stretched but can be
collapsed lengthwise by depressing the bars.
By means of knockers the bars are depressed periodically and in succession as
their tubes come over the cut off chamber hereinafter described. These knockers
may consist of two or more arms 25, pivotted on a spindle 26, supported in
brackets 27 extending from uprights 28 supported by the rings 2 of the frame.
The uprights 28 have journaled in them a shaft 29 having at intervals toothed
cams 30 which act on the rear ends of the arms 25 as the shaft 29 rotates, thus
raising the arms and letting them drop and strike the bars 19. The arms 25 may
be held clear of the bars 19 by springs 31 supported upon a cross bar 32.
toothed cams 30 are so arranged that they cause the arms 25 to strike the bars 19,
once or more, while the tubes are over the cut off chamber.
The
Within the upper portion of the drum 4, extends longitudinally the cut off
chamber 33. It is open at its top and as the reel revolves the lower ends of the
tubes 12 are brought over the mouth of the chamber while they are cut off from
communication with the interior of the drum 4. From opposite sides of the
chamber 33, at its upper end, side wings 34 extend across the lower ends of the
row of tubes on each side of the tubes that for the time being are, open to the
chamber 33. This prevents air from the drum 4 from entering the tubes as they
pass over the open top of the chamber 33. Close contact is made between the
inner surface of the drum 4 and the side wings 34 by an elastic facing 34. The
chamber 33 is preferably supported by springs 57 bearing against the under side
of the wings 34 and resting upon adjustable brackets 58 which are held to the
heads of the drum by bolts 59 passing through slotted holes so that the tension of
the springs can be regulated.
Vertical ribs 60 on the inside of the heads 5, form guides for the sides 61 of the
cut off chamber, and the space between these ribs and the ends of the chamber may
be packed with felt or like material so as to make an air tight joint. The lower
portion of the cut off chamber may be fixed to the heads of the drum, while the
upper part only may be vertically adjustable, the two parts being separated where
indicated by the dotted line in Figure 3. In this case the one part should overlap
the other so as to prevent passage of air from the drum at the junction.
In the lower part of the cut off chamber 33 is a worm conveyor 35 for discharging
through the outlet 36 the dust deposited in the chamber 33 from the dust collecting
tubes. The air may be prevented from entering the cut off chamber through the
outlet 36 by making the conveyor 35 fit the cylindrical passage to the outlet as
illustrated in Figure 2.
37 is a fan which may connect directly with a middlings purifier or other source
of dust laden air, which it delivers into the drum 4 through its outlet 38 which
passes through one head of the drum. The dust laden air is forced through the
openings 11 into the tubes 12 and on the interior of which it deposits its dust, while
the air freed from the dust passes out through the sides of the tubes into a casing
or room. As the tubes by the rotation of the drum are brought in succession over
the cut off chamber 33 bars 19 are struck so as to jar the tubes and dislodge the

page_text: dust from their interiors. At the same time, air is drawn inwards through the sides
of the tubes and carries the dust down into the cut off chamber from whence it is
discharged by the conveyor 35. The back draught for dislodging the dust from
the tubes is produced by connecting the cut off chamber by a pipe 39 with the
inlet of the fan 37, so that the air which is thus drawn through the cut off chamber
is again returned into the drum.
In order to prevent the dust in the cut off chamber from being carried into the
fan, I provide a hood 40, over the inlet to the pipe 39.
The reel is rotated by suitable means, for instance by means of a pitman 41
reciprocating through a guide 62 and engaging ratchet teeth 42 on one of the rims 3
of the drum, this pitman being worked by a crank arm 43 on a shaft 44 caused to
revolve in bearings 45 by bevil gear 46 and 47 driven from a shaft 48 which
carries a belt pulley 49. On the shaft 44 is a pulley 50 a belt 51 from which drives
a pulley 52 on the shaft 53 of the conveyor 35. This shaft 53 carries a second
pulley 54 from which runs a belt 55 to a pulley 56 on the shaft 29.
The rotation of the reel instead of being intermittent, might obviously be made.
continuous. When the rotation is intermittent, I prefer to so proportion the parts
that one quarter turn of the driving shaft moves the reel through the distance from
one row of tubes to the next allowing three fourths of a turn for causing the knockers
to strike several blows before the reel is further rotated.
Figures 7 to 14 show several modifications of construction, additional reference
numerals being used to denote parts different from those already marked for which
same reference numerals are employed in Figures 7 to 14.
To the upper ends of the standards 1 are secured the rings 63 by bolts passing
through flanges 64. Within the rings 63 turn the rims 3 inside which the heads 5
are held by the brackets 5ª which are bolted to the heads and to the rings 63. An
air tight joint is made between the inner face of the rims 3 and the heads 5 by
packing 65 secured to a wooden ring 8 attached to the head and to a ring 9 lying
inside the rims 3. The outer periphery of the rims 3 have teeth 42 on which acts
a pawl so as to rotate the drum.
The inner ends of the rims 3 have laterally extending flanges 66 to which
are bolted arms 22, sustaining at their upper ends the longitudinal bars 19
to which are connected the heads of the dust collecting tubes 12, as already
described.
Each of the holes il, in the drum is made with opposite notches 67 so that the
ring 19 which is attached to the lower end of the tube 12 may be inserted
perpendicularly from the outside so as to bring the ring into the inside of the drum
when it is turned so as to lie in the recess of the hole. When it is desired to take
out a tube its ring will be turned edgewise so as to pass through the notches to the
outside. This construction greatly facilitates the connection of the tubes to the drum
and admits of any of them being disconnected without dismembering other parts
of the machine.
Within the upper portion of the drum 4 is placed the cut off chamber 33 as
previously described. The conveyor shaft 53 has blades 68, such that the dust is
mored to one end of the chamber and discharged through the cap 69, having a
discharge spout 70 with its top open and inclined so that the dust will not choke the
spout. At the discharge the conveyor has blades 70 to force the dust into the
spout 70. The cut off chamber communicates through an air pipe 87 with the inlet
to the fan so as to create a back draught as already described.
The
Brackets 71 extending up at opposite ends of the machine, support the shaft 72
carrying the driving puiley 73. It also carries a pulley 74 from which power is
transmitted by a hand 95 to a pulley 76 on the conveyor shaft 53.
shaft 72 has at its end a pinion 88 gearing with a wheel 89 on a shaft 75. This
wheel 89 has a crank pin 90 and its shaft 75 has at its opposite end a crank 77.
To the cranks 90 and 77 are connected arms 78 to which are secured straps 79
having their lower ends turned inwards so as to engage teeth on the peripheries
of the rims 3, acting as pawls, which give intermittent rotation to the drum 4. For

page_text: the purpose of holding the pawls in engagement with the teeth 42, I prefer to
attach to arms 78 counter weights 80. The shaft 75 also carries toothed
cams 81 which act on the knockers 82 mounted loosely on the shaft 83. The heels
of these knockers have plates 84 forming hard surfaces to receive the strokes of the
cams 81.
The knockers 82 operate as already described.
Part of the periphery of each cam from the point 85 to 86 forms a rest bearing
against the heel plate of the knocker so as to keep the knocker raised while the
drum is rotating.
91 is a drip cup, placed under each of the cams 81 so as to catch oil drops
and prevent them from falling onto the tubes. These drip cups are hung on the
shafts 83 and 75.
It is found that under some conditions there is considerable wear on the fabric
tubes 12 where they have the metal rings. In order to increase the durability of
the fabric there, a shield 93 of stronger fabric (Figure 12) or a metal shield 94
(Figure 11) may be secured to the fabric and ring.
The collector may be worked in a room without being enclosed in a casing so as
to leave all parts exposed to view.
Dated this 13th day of February 1896.
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Dust Collectors.
I, FAUSTIN PRINZ, of 659-663 East Water Street, Milwaukee, State of
Wisconsin, United States of America, Manufacturer of Milling Machinery do
hereby declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
My invention relates to dust collectors and has for its object the construction of
a compact and efficient machine having its parts easily accessible. Its object
is also to provide means of reversing the air current so as to sweep out dust
collected in the tubes made of textile material firmly secured and evenly
stretched.
The invention also comprises improved means of rotating the drum carrying
the dust collecting tubes, and of periodically actuating the knockers for dislodging
the collected dust.
I shall describe my invention referring to the drawings accompanying my
Provisional Specification,
Figure 1 is an end view of the machine.
Figure 2 is a longitudinal section.
Figure 3 shews on an enlarged scale a portion of the drum, cut off chamber and
collecting tubes.
Figure 4 shews the upper portion of one of the tubes.
Figure 5 shews its lower portion.
Figure 6 a cross section through a tube.
Figure 7 is an end elevation of the machine with some of the dust collecting tubes
omitted.
Figure 8 is a vertical longitudinal section with parts omitted.
Figure 9 is a vertical section showing the manner of making the head of the drum
air tight.
Figures 10, 11 and 12 are sections on an enlarged scale showing modes of securing
the tubes to the drum.

page_text: Figure 13 is a perspective of one of the openings for the insertion of the ring-end
of a collecting tube; the dotted lines on Figure 10 and 13 showing the position of
a ring in inserting and withdrawing it.
Figure 14 is a vertical section through the discharge cap.
The two end standards 1 are formed at their upper ends with rings 2 in which
fit and turn the rims 3 which constitute the ends of the drums 4. The heads 5 of
the drum are held to the rings 2 by brackets 5º, a packing 6 being placed between
the heads and the inner face of the rims 3 so as to make a tight joint, and a strip
of flexible material 7 extends from a ring 8 which may be of wood, to a ring 9,
set inside the rim 3 so as to make an air tight joint at the junction of these parts.
The body of the drum 4 is preferably made of wood its ends fitted in recesses 10
in the rims 3. In the periphery of the drum 4 are formed a number of holes 11
to receive the lower ends of the dust collecting tubes 12 which are made of suitable
reticulated or textile material. The holes 11 are recessed at 13 to form seats for
rings 14 attached to the inner ends of the tube's 12.
The upper end of each tube 12 hag a solid head 14" which may be of wood, it
has a peripheral groove 15, so that when the tube is drawn up around the head it
is secured by a wire 16 passed around the tube and so pressing it into the
groove 15. Thus the fabric composing the tube can be drawn tight and can be
readily disconnected from the head by simply loosening the wire. In order that
the tube may be stretched evenly throughout its length, it is made of two longi-
tudinal sections 17 and joined by the opposite seams 18. The tubes might be
made in one piece with a single sean but when it is made in that way the fabric
cannot be drawn so as to make all sides of the tube even and alike as when the
tube is made in two sections.
As the circumference at the outer ends of the tube is greater than that at the
inner ends, or circumference of the drum 4, the heads 14 are made oblong so that
the tubes taper as shewo. The holes 11 are in parallel lines so that there are rows
of tubes extending from end to end of the drum in line with each other, and thus
each row is brought over the cut off chamber and conveyor as will be hereafter
described. The upper ends of the tubes are sustained by longitudinally extending
bars 19, a bar for each row, connected to the tubes by bolts 20.
The ends of the bars fit over pins 21 projecting from the upper ends of arms 22
extending from the rims 3 and secured to flanges 23 projecting from the rims.
The bare can slide on the pins 21 and are pressed outwards by springs 24 so that
the tubes are held normally stretched but can be collapsed lengthwise by depressing
the bars.
By means of knockers the bars are depressed periodically and in succession as
their tubes come over the cut off chamber hereinafter described. These
knockers may consist of two or more arms 25, pivotted on a spindle 26,
supported in brackets 27 extending from upriglits 28 supported by the rings 2 of
the frame.
The uprights 28 have journaled in them a shaft 29 having at intervals toothed
cams 30 which act on the rear ends of the arms 25 as the shaft 29 rotates, thus
raising the arms and letting them drop and strike the bars 19.
The arms 25 may be held clear of the bars 19 by springs 31 supported upon a
cross bar 32. The toothed cams 30 are so arranged that they cause the
arms 25 to strike the bars 19, once or more, while the tubes are over the cut off
chamber.
Within the upper portion of the drum 4 extends longitudinally the cut off
chamber 33. It is open at its top and as the reel revolves the lower ends of the
tubes 12 are brought over the mouth of the chamber while they are cut off from
communication with the interior of the drum 4. From opposite sides of the
chamber 33, at its upper end side wings 34 extend across the lower ends of the ro
of tubes on each side of the tubes that for the time being are open to the
chamber 33. This prevents air from the drum 4 from entering the tubes as they
pass over the open top of the chamber 33. Close contact is made between the

page_text: inner surface of the drum 4 and the side wings 34 by an elastic facing 34. The
chamber 33 is preferably supported by springs 57 bearing against the under side
of the wings 34 and resting upon adjustable brackets 58 which are held to the
heads of the drum by bolts 59 passing through slotted holes so that the tension of
the springs can be regulated.
Vertical ribs 60 on the inside of the heads 5, form guides for the sides 61 of the
cut off chamber, and the space between these ribs and the ends of the chamber
may be packed with felt or like material so as to make an air tight joint. The
lower portion of the cut off chamber may be fixed to the henda of the drum,
while the upper part only may be vertically adjustable, the two parts being
separated where indicated by the dotted line in Figure 3.
In this case the one part should overlap the other so as to prevent passage of
air from the drum at the junction.
In the lower part of the cut off chamber 33 is a worm conveyor 35 for dis-
charging through the outlet 36 the dust deposited in the chamber 33 from the dust
collecting tubes. The air may be prevented from entering the cut off chamber
through the outlet 36 by making the conveyor 35 fit the cylindrical passage to the
outlet as illustrated in Figure 2.
37 is a fan which may connect directly with a middlings purifier or other source
of dust Indeu air, which it delivers into the drum 4 through its outlet 38 which
passes through one head of the drum. The dust laden air is forced through the
openings 11 into the tubes 12 and on the interior of which it deposits its dust,
while the air freed from the dust passes out through the sides of the tubes into a
casing or room.
As the tubes by the rotation of the drum are brought in succession over the cut
off chamber 33 bars 19 are struck so as to jar the tubes and dislodge the dust
from their interiors. At the same time, air is drawn inwards through the sides of
the tubes and carries the dust down into the cut off chamber from whence it is
discharged by the conveyor 35. The back draught for dislodging the dust from
the tubes is produced by connecting the cut off chamber by a pipe 39 with the
inlet of the fan 37, so that the air which is thus drawn through the cut off chamber
is again returned into the drum.
In order to prevent the dust in the cut off chamber from being carried into the
fan, I provide a hood 40, over the inlet to the pipe 39.
The reel is rotated by suitable means, for instance by means of a pitman 41
reciprocating through a guide 62 and engaging ratchet teeth 42 on one of the
rims 3 of the drum, this pitman being worked by a crank arm 43 on a shaft 44
caused to revolve in bearings 45 by bevil gear 46 and 47 driven from a shaft 48
which carries a belt pulley 49.
On the shaft 44 is a pulley 50 a belt 51 from which drives a pulley 52 on the
shaft 53 of the conveyor 35.
This shaft 53 carries a second pulley 54 from which runs a belt 55 to a pulley 56
on the shaft 29.
The rotation of the reel instead of being intermittent, might obviously be made
continuous.
When the rotation is intermittent, I prefer to so proportion the parts that one
quarter turn of the driving shaft moves the reel through the distance from one row
of tubes to the next allowing three fourths of a turn for causing the knockers to
strike several blows before the reel is further rotated.
Figures 7 to 14 show several modifications of construction, additional reference
numerals being used to denote parts different from those already marked for which
same reference numerals are employed in Figures 7 to 14.
To the upper ends of the standards 1 are secured the rings 63 by bolts passing
through flanges 64. Within the rings 63 turn the rims 3 inside which the heads 5
are held by the brackets 5ª which are bolted to the heads and to the rings 63. An
air tight joint is made between the inner face of the rims 3 and the heads 5 by
packing 65 secured to a wooden ring 8 attached to the head and to a ring 91
vino

page_text: inside the rims 3. The outer periphery of the rims 3 have teeth 42 on which acts.
a pawl so as to rotate the drum.
The inner ends of the rims 3 have laterally extending flanges 66 to which are
bolted arms 22, sustaining at their upper ends the longitudinal bars 19 to which are
connected the heads of the dust collecting tubes 12, as already described.
Each of the holes 11, in the drum is made with opposite notches 67 so that the
ring 19 which is attached to the lower end of the tube 12 may be inserted
perpendicularly from the outside so as to bring the ring into the inside of the drum
when it is turned so as to lie in the recess of the hole. When it is desired to take
out a tube its ring will be turned edgewise so as to pass through the notches to the
outside. This construction greatly facilitates the connection of the tubes to the
drum and admits of any of them being disconnected without dismembering other
parts of the machine.
Within the upper portion of the drum 4 is placed the cut off chamber 33 as
previously described. The conveyor shaft 53 has blades 68, such that the dust is
moved to one end of the chamber and discharged through the cap 69, having à
discharge spout 70 with its top open and inclined so that the dust will not choke
the spout. At the discharge the conveyor has blades 70 to force the dust into the
spout 70. The cut off chamber communicates through an air pipe 87 with the
inlet to the fan so as to create a back draught as already described.
Brackets 71 extending up at opposite ends of the machine support the shaft 72
carrying the driving pulley 73. It also carries a pulley 74 from which power is
transmitted by a band 95 to a pulley 76 on the conveyor shaft 53.
The shaft 72 has at its end à pinion 88 gearing with a wheel 89 on a shaft 75.
This wheel 89 has a crank pin 90 and its shaft 75 bas at its opposite end a crank 77.
To the cranks 90 and 77 are connected arms 78 to which are secured straps 79
having their lower ends turned inwards so as to engage teeth on the peripheries of
the rims 3, acting as pawls, which give intermittent rotation to the drum 4.
For the purpose of holding the pawls in engagement with. the teeth 42, I prefer
to attach to arms 78 counter weights 80. The shaft 75 also carries toothed cams 81
which act on the knockers 82 mounted loosely on the shaft 83. The heels of these
knockers have plates 84 forming hard surfaces to receive the strokes of the
cams 81.
The knockers 82 operate as already described.
Part of the periphery of each cam from the point 85 to 86 forms a rest bearing
against the heel plate of the knocker so as to keep the knocker raised while the
drum is rotating.
91 is a drip cup placed under each of the cams 81 so as to catch oil drops and
prevent them from falling on to the tubes. These drip cups are hung on the
shafts 83 and 75.
It is found that under some conditions there is considerable wear on the fabric
tubes 12 where they have the metal rings. In order to increase the durability of
the fabric there, a shield 93 of stronger fabric (Fig. 12) or a metal shield 94 (Fig. 11)
may be secured to the fabric and ring.
The collector may be worked in a room without being enclosed in a casing so as
to leave all parts exposed to view.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a dust collector, the combination of a rotating drum rows of dust collecting
tubes, radiating from the drum and closed at their outer ends by covers attached
to spring supported cross bars, knockers arranged to act on each bar as it passes
one point in its revolution so as to jar each row of tubes in succession, a cut-off
chamber within the drum in communication with the tubes the jarred row, a fan
passing dust laden air into the drum and through the tubes, a communication from

page_text: the cut off chamber to the fan inlet and a conveyor and outlet from the cut off
chamber, substantially as and for the purposes set forth.
2. The construction of the cut off chamber with side wings carrying packing and
springs pressing the wings and packing against the interior of the drum, substantially
as described.
3. The construction and mounting of the drum consisting of a cylindrical part
carrying the tubes and stationary heads or ends about which the drum rotates, and
through one of which dust laden air is passed into the drum through the other dust
is discharged from the cut off chamber, substantially as described.
4. The construction of each dust collecting tube of longitudinal sections of flexible
porous material, united together so that the material can be stretched uniformly
throughout its surface, the mouth of the tube being distended by a ring held in a
recessed hole of the drum, which hole is notched to allow passage of the ring
edgeways, substantially as described.
5. For driving the drum, the combination of a crank and a counterweighted pawl
engaging ratchet teeth on the drum, substantially as described.
6. For working the knockers, a rotating shaft provided with cams so formed as to
hold up the knockers while the drum rotates and with projections to actuate the
knockers while the drum is at rest, substantially as described.
7. In combination with the shaft carrying cams to actuate the knockers,
drip cups to prevent oil dripping on to the collecting tubes, substantially as
described.
8. The construction of the outlet from the cut off chamber with a cap and a
discharge spout having an inclined open top, and its combination with a conveyor
having its blades next to the outlet arranged to direct the material into the discharge
spout, substantially as and for the purposes set forth.
Dated this 16th day of October 1896.
ABEL & IMKAY,
Agents for the Applicant.