U.S. patent number 3,722,740 [Application Number 05/198,007] was granted by the patent office on 1973-03-27 for discrete article separating and dispensing apparatus, particularly for measured counts of pills, capsules and the like.
Invention is credited to Hans List.
United States Patent |
3,722,740 |
List |
March 27, 1973 |
DISCRETE ARTICLE SEPARATING AND DISPENSING APPARATUS, PARTICULARLY
FOR MEASURED COUNTS OF PILLS, CAPSULES AND THE LIKE
Abstract
A discrete article separating and dispensing apparatus having a
drum, sub-divided by row and column dividers to form receiving
receptacles for articles, such as pills. Further included is a
feeding grid having a plurality of feeding receptacles which are
selectively in registration with the receiving receptacles which
are selectively in registration with the receiving receptacles of
the drum for receiving articles from interior of the drum and
feeding the articles to the drum receptacles. The feeding grid
extends over a lower portion of the drum and is located interior of
the drum and is preferably vibrated to enhance the feeding of
articles to the receiving receptacles in the drum.
Inventors: |
List; Hans
(Stuttgart-Sonnenberg, DT) |
Family
ID: |
5787856 |
Appl.
No.: |
05/198,007 |
Filed: |
November 11, 1971 |
Foreign Application Priority Data
|
|
|
|
|
Nov 12, 1970 [DT] |
|
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P 20 55 598.0 |
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Current U.S.
Class: |
221/7; 221/169;
221/265 |
Current CPC
Class: |
B65G
47/1428 (20130101) |
Current International
Class: |
B65G
47/14 (20060101); B65g 065/32 () |
Field of
Search: |
;221/7,6,2,169,265,81,10,167,168 ;53/57,78,154,166,51,52 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Tollberg; Stanley H.
Claims
I claim:
1. In a discrete article separating and dispensing apparatus,
particularly for dispensing of measured quantities of articles,
such as pills, capsules, and the like, comprising
a horizontal, rotatable drum having end walls and horizontally
extending row dividers and circumferentially extending column
dividers and defining article receiving receptacles therebetween,
said receiving receptacles being located at the interior surface of
the drum between said end walls;
article supply means, at least a portion thereof being located
interior of the drum and supplying the articles to the lower part
of the interior of the drum;
means forming a lower covering shell located beneath said drum and
extending lengthwise thereof, and located close to said row and
column dividers to prevent articles from falling through said
receiving receptacles;
an upper shell part located inside of said drum, close to said row
and column dividers and extending lengthwise of said drum, and
covering at least a portion of the upper half of the drum from the
interior thereof to prevent articles from falling out of said
receiving receptacles; and
means receiving articles from the receiving receptacles of a
row;
the improvement comprising a part-cylindrical feeding grid (62)
located just above a lower portion of said drum and extending
lengthwise of said drum, said feeding grid having horizontally
extending row dividers and partly-circumferentially extending
column dividers which define a plurality of guide receptacles (67)
therebetween, said guide receptacles being selectively in
registration with said receiving receptacles of said drum, at least
one of the dividers of said feeding grid having inclined surfaces
thereon to guide the articles into the receiving receptacles in a
predetermined position.
2. Apparatus according to claim 1, wherein said feeding grid
extends over the lower quadrant of the drum which corresponds to
the quadrant in which the drum is upwardly moving during rotation
thereof.
3. Apparatus according to claim 1, wherein the column dividers (65)
of said feeding grid (62) are partly ring-shaped ribs having
divergent, inclined guide surfaces and the row dividers are
transversely extending members which include means for spacing
adjacent column dividers from each other.
4. Apparatus according to claim 1, wherein said column dividers
(65) of said feeding grid (62) have a height such that the guide
receptacles (67) always contain an article for guiding said article
to an emptied receiving receptacle (68) located in registration
with and below said guide receptacle.
5. Apparatus according to claim 1, wherein said column dividers
(65) have at least one inclined or tapered guide surface (60) for
facilitating guiding said articles into said guide receptacles.
6. Apparatus according to claim 1, wherein said feeding grid (62)
is connected to a rigid holding means, and including means for
imparting a shaking motion to said feeding grid to facilitate
feeding said articles to said receiving receptacles.
7. Apparatus according to claim 6, wherein said feeding grid (62)
is pivotally mounted at its upper end to said rigid holder and said
means for imparting said shaking motion is coupled to said feeding
grid at its lower end.
8. Apparatus according to claim 7, wherein said feeding grid
extends over the lower quadrant of said drum which corresponds to
the quadrant in which said drum is upwardly moving.
9. Apparatus according to claim 7, wherein said feeding grid
includes at least one cam at the lower end thereof adjacent said
drum.
10. Apparatus according to claim 9, wherein said means for
imparting said shaking motion includes a ratchet (70) pivotally
mounted at the lower end of said feeding grid, the ratchet having
said at least one cam thereon, and pin-like means (74) extending
from the circumference of said drum for engaging the cammed surface
of said ratchet, said shaking motion being imparted to said feeding
grid as said pin-like means engage and disengage said at least one
cam during rotation of said drum relative to said feeding grid.
11. Apparatus according to claim 1, wherein said upper shell part
(76) extends to said feeding grid and a portion thereof adjacent
said feeding grid is tapered towards said feeding grid.
12. Apparatus according to claim 11, wherein said tapered portion
of said upper shell part is a tapered extension member connected to
said upper shell part.
13. Apparatus according to claim 1, including a roll brush (78)
engaging said feeding grid at the uppermost portion, with respect
to the direction of movement of said drum, of said feeding grid,
said roll brush rotating in an opposite direction to the direction
of rotation of said drum for preventing articles for contacting
said upper shell part.
14. Apparatus according to claim 1, wherein said feeding grid is
formed of plastic column dividers which are connected together by
means of pins arranged longitudinally with respect to said drum,
said plastic column dividers projecting radially from said
connecting members in a direction towards the center of the
drum.
15. Apparatus according to claim 14, wherein said longitudinally
extending connecting members are rigidly connected to an end wall
of said drum.
16. Apparatus according to claim 14, wherein said longitudinally
extending connecting means includes spacer members located between
said column dividers of said feeding grid to space adjacent column
dividers from each other.
17. Apparatus according to claim 1, further comprising a toothed
wheel (80) interior of said drum, the teeth of said wheel engaging
successive receiving receptacles of said drum for pushing an
article out of said drum; a discharge duct located below said
toothed wheel and receiving articles pushed out of said drum by
said toothed wheel; and a counter means arranged in the path of
said article being pushed through said discharge duct and against
which said article is pushed for counting the number of articles
passing out of said drum and through said discharge duct.
18. In a discrete article separating and dispensing apparatus,
particularly for dispensing of measured quantities of articles,
such as pills, capsules, and the like, comprising
a horizontal, rotatable drum having end walls and horizontally
extending row dividers and circumferentially extending column
dividers and defining article receiving receptacles therebetween,
said receiving receptacles being located at the interior surface of
the drum between said end walls;
article supply means, at least a portion thereof being located
interior of the drum and supplying the articles to the lower part
of the interior of the drum;
means forming a lower covering shell located beneath said drum and
extending lengthwise thereof, and located close to said row and
column dividers to prevent articles from falling through said
receiving receptacles;
an upper shell part located inside of said drum, close to said row
and column dividers and extending lengthwise of said drum, and
covering at least a portion of the upper half of the drum from the
interior thereof to prevent articles from falling out of said
receiving receptacles; and
means receiving articles from the receiving receptacles of a
row;
the improvement comprising a discharge duct located underneath said
drum; a toothed wheel (80) located interior of said drum and having
teeth which engage respective successive receiving receptacles of
said drum during rotation of said drum to push articles out of said
receiving receptacles into said discharge duct; and a counter means
arranged in the path of article discharge of said drum and against
which said articles are pushed by said toothed wheel for counting
the number of articles pushed out of said drum and into said
discharge duct.
19. Apparatus according to claim 1, further comprising a control
device coupled to at least one side of said drum and including
counter pins (84) coupled to a circumferential series of said
receiving receptacles (68), photoelectric means for detecting the
presence of an article in a receptacle, and means responsive to
said photoelectric means for moving the counter pin corresponding
to a given receiving receptacle when said photoelectric means
detects the absence of an article in said given receiving
receptacle.
20. Apparatus according to claim 19, including counter wheels (85)
coupled to said counter pins, said counter pins causing said
counter wheels to move in a step-wise manner, each step
corresponding to a counter pin passing a given location.
21. Apparatus according to claim 20, wherein said counter wheels
are toothed wheels which engage said counter pins for said
step-wise movement.
22. Apparatus according to claim 19, including a diverter (87)
rigidly mounted in the path of movement of said counter pins for
restoring said counter pins to their operational position from a
non-operational position caused by absence of an article in a given
receiving receptacle.
23. Apparatus according to claim 1, including control means sensing
the presence or absence of articles in receiving receptacles of
said drum and controlling the emptying of complete circumferential
columns of articles into said means for receiving articles, and
controlling completion of a non-completely charged column prior to
emptying of same into said means for receiving articles from said
receptacles.
24. Apparatus according to claim 1, comprising a filling drum (98)
having radially subdivided compartments (99), each of said
compartments receiving the articles of at least one circumferential
series of receiving receptacles.
25. Apparatus according to claim 1, wherein said upper shell part,
said feeding grid and said article supply means are coupled
together to form an integral unit which is removable from said
drum.
26. Apparatus according to claim 25, including track means engaging
said integral unit to facilitate removal thereof.
27. Apparatus according to claim 1, wherein said drum is comprised
of a plurality of sections (103) which are removably coupled
together, said drum sections being generally in the form of
cylindrical sectors removably connected together.
28. Apparatus according to claim 27, wherein said drum comprises
holder rings (105) at both ends thereof and means for removably
attaching said drum sections (103) to said holder rings (105).
29. Apparatus according to claim 1, wherein said drum is removably
mounted to said apparatus.
30. Apparatus according to claim 1, comprising at least one
transparent cover surrounding at least a portion of said drum.
31. Apparatus according to claim 1, including a pair of barrel
rings (125, 126) coupled to said drum and engaged by support and
drive rolls.
32. Apparatus according to claim 31, wherein said drum includes
pins (128) extending from both sides thereof and engaging bores
(127) of respective barrel rings.
33. Apparatus according to claim 31, wherein at least one of said
barrel rings together with its support roll is axially
displaceable, and including a threaded screw means threadably
engaged with said displaceable barrel ring and support roll for
axially displacing said barrel ring and support roll by rotation of
said threaded screw.
34. Apparatus according to claim 1, wherein said drum has a pulley
at each end thereof, and including drive means having a belt
engaging at least one of said pulleys.
35. Apparatus according to claim 1, wherein said article supply
means includes a detecting means providing a pair of vertically
spaced light beams (122, 123) and means responsive to said light
beams for causing introduction of new articles to said drum when
the level of said articles falls below the lowermost of said light
beams and for stopping the introduction of new articles to said
drum when the level of articles reaches the level of the uppermost
of said light beams and interrupts said uppermost light beam.
36. Apparatus according to claim 1, wherein said article receiving
means includes a table which is upwardly and downwardly
displaceable relative to said drum on which a plurality of
containers are arranged, said containers receiving said articles
from said drum.
37. Apparatus according to claim 6, including a threaded member
rigidly mounted with respect to a drum-support means and arranged
beneath said table, a threaded screw means threadably engaged in
said rigidly mounted threaded member and engaging the lower surface
of said table, said table height being adjusted by turning of said
threaded screw means relative to said fixed threaded member.
38. Apparatus according to claim 37, including rod means coupled to
the support means for said drum and projecting through bores in
said table, said threaded member being fixedly coupled to the lower
portion of said rod means, said table being slidable on said rods
in response to turning of said threaded screw means.
Description
The present invention relates to improvements in apparatus to
separate and then dispense measured counts of discrete small
articles, such as pills, capsules, troches, and the like,
particularly designed to prevent damage to the articles being
handled.
The present invention is related to a device which is similar to
that disclosed in U.S. Pat. application Ser. No. 877,316, filed
Nov. 17, 1969, now abandoned and assigned to the same assignee as
the present application. The present invention is primarily
intended as a simplication and operational improvement of the
device described therein.
The main object of the present invention is to provide an improved
apparatus for separating and dispensing measured counts of discrete
small articles which more reliably and safely feeds the articles to
a dispensing drum.
A further object of the invention is to provide such a system
having improved counting and article detection arrangements.
SUMMARY OF THE INVENTION
In accordance with the present invention, a discrete article
separating and dispensing apparatus includes a horizontal,
rotatable drum having horizontally extending and circumferentially
extending dividers which define article receiving receptacles
therebetween, article supply means, at least a portion thereof
being located interior of the drum to supply articles to the lower
part of the interior of the drum, a lower covering shell located
beneath the drum for preventing articles from falling through the
receiving receptacles of the drum, an upper shell part located
interior of the drum for preventing articles from falling out of
the receiving receptacles and means receiving articles from the
receiving receptacles of the drum. In accordance with the present
invention, the improvement comprises a part-cylindrical feeding
grid which is located just above a lower portion of the drum and
which extends lengthwise of the drum, the feeding grid having
horizontally extending and partly circumferentially extending
dividers which define a plurality of guide receptacles
therebetween. The guide receptacles are selectively in registration
with the receiving receptacles of the drum, at least one of the
dividers of the feeding grid having an inclined surface thereon to
facilitate guiding of the articles into the receiving receptacles
in a predetermined position.
In accordance with a further feature of the invention, the feeding
grid is vibrated or periodically shaken to enhance the feeding of
the articles, and to prevent jamming. In accordance with a further
feature of the invention, a toothed wheel having teeth engaging
with the receiving receptacles of the drum is located at the lower
portion of the drum for pushing articles out of the receiving
receptacles into a discharge duct, and a counter device being
contacted by the pushed out articles for counting the articles fed
to the discharge duct. The invention also contemplates various
other specific features which are discussed in detail
hereinbelow.
The invention will be described by way of example with reference to
the accompanying drawings, in which:
FIG. 1 is a fragmentary side elevational view, partly in
cross-section of a drum for sorting, counting and filling in
accordance with the present invention;
FIG. 2 is a cross-sectional view along line 2--2 of FIG. 1;
FIG. 3 is a view similar to FIG. 2 of a drum with a differently
formed grid;
FIG. 4 is a fragmentary cross-sectional view of the drum and the
feeding grid in a section perpendicular to the axis;
FIG. 5 is a view similar to FIG. 4 of a modified drum;
FIG. 6 is a fragmentary view from the inside of the drum of FIG.
5;
FIG. 7 is a fragmentary cross-sectional view of the drum and the
feeding grid with a roll brush in a section perpendicular to the
axis;
FIG. 8 is a fragmentary cross-sectional view of the drum and the
feeding grid along the line VIII--VIII of FIG. 10;
FIG. 9 is a fragmentary cross-sectional view of the drum and the
feeding grid along the line IX--IX of FIG. 10;
FIG. 10 is a fragmentary side elevational view of the drum and the
feeding grid with the wall of the fixed housing partially cut
away;
FIG. 11 illustrates the drum with a toothed roller wheel and a
filling drum partially represented in a section perpendicular to
the axis;
FIG. 12 is a fragmentary front view of the drum with counter pins
and a counter wheel;
FIG. 13 is a fragmentary enlarged scale view of the drum of FIG. 12
showing the feeding grid in enlarged scale;
FIG. 14 is a sectional view of the drum of FIG. 12 along line
20--20 of FIG. 19;
FIG. 15 is a fragmentary front view, partially in section, of the
drum with a diverter for the counter pins;
FIG. 16 is a sectional view of the drum and the diverter of FIG. 15
taken through the drum axis;
FIG. 17 is a side view of the diverter of FIGS. 15 and 16;
FIG. 18 is a side view of an electromagnetic device for moving or
sliding the counter pins;
FIG. 19 is a side elevation of a drum in accordance with the
present invention, in which wall, feeding grid, and toothed roller
wheel as well as shaker device are shown;
FIG. 19a shows the drum of FIG. 19 in reduced scale in a side
view;
FIG. 20 shows the combination of FIG. 19 removed from the drum;
FIG. 21 is a disassembled perspective view of a drum in accordance
with the present invention;
FIG. 22 is a section of the drum along the line 35--35 of FIG.
24;
FIG. 23 is a section of the drum along the line 36--36 of FIG.
24;
FIG. 24 is a partial inside view of the drum of the present
invention;
FIG. 25 is a side view of a rod used in the drum;
FIG. 26 is a front view of the rod of FIG. 25;
FIG. 27 is a fragmentary axial section of the drum and a feeding
grid with a schematic illustration of supervisory equipment for the
filling level;
FIG. 28 is a schematic side view of a drum mounted on support rolls
which is detachably secured to two outer rolls;
FIG. 29 is a front view of the drum of FIG. 28;
FIG. 30 is a front view of a drum mounted on support rolls, and
which is continuously driven by V-belts;
FIG. 31 is a side view of the drum of FIG. 30;
FIG. 32 is a side view of a counting device for use with the
invention; and
FIG. 33 is a top view of the counting device of FIG. 32.
The filling drum of FIGS. 1 and 2 includes guide surfaces 60 for
the alignment of the bodies 61, such as pills, which are to be
sorted and counted, located on a feeding grid 62 which is fixed to
a rigid holder and which lies inside of ribbed drum 63 and of
outside shell 64. Feeding grid 62 extends over the lower left-hand
quadrant of ribbed drum 63 which moves upwards with reference to
FIG. 1. Grid 62 is comprised of individual guide members 65 in the
form of divider strips or ribs which are held together through
appropriately formed rodlike members 66 which also spaces the
members 65 from each other. The guide rib members 65 must be
connected in such a way that the guide receptacles 67 formed by rib
members 65 of feeding grid 62 lie precisely on top of (i.e., in
registration with) the pickup receptacles of drum 68. The drum
receptacles are defined by spaced ring members or projections
63.
Feeding grid 62 is secured to a rigid holder at 69. At its bottom
end a ratchet 70 is swingably mounted, and its operational surface
73 which carries cams 71 and 72 has a length such that it
continuously rests on one of the many pins 74, which are fixed on
the circumference of drum 63. Pins 74, during the rotation of drum
63, slide past cams 71 and 72, ratchet 70 is lifted so that when
ratchet 70 lies against the head of a screw 75 set in feeding grid
62, the feeding grid is also correspondingly moved, to effectively
shake the pills. The shaking frequency is thereby dependent on the
number of pins 74 and of cams 71 and 72, while the magnitude or
strength of the shaking is dependent on the length of cams 71 and
72. The diameter of the head of screw 75 determines the clearance
between feeding grid 62 and drum 63.
Guide members 65 which make up feeding grid 62 have such height
that over and above the sorted bodies (pills) in pickup receptacle
68 of drum 63, there is always yet another unaligned body led by
the feeding grid 62 into the corresponding guide receptacle 67. In
this way security is increased that all of the pickup receptacles
68 of drum 63 will actually always be filled with corresponding
bodies (pills). This prevents counting errors and improves
efficiency.
Under certain circumstances it can, depending on the form of the
bodies to be sorted and counted, be useful to slope, incline or
taper only one of the two guide surfaces 60 of the guide members 65
forming the guide receptacles 67. This modification is illustrated
in FIG. 3.
The shaking motion imparted to feeding grid 62 accelerates the
passage of the bodies out of guide receptacles 67 of the forming
grid into the pickup receptacles 68 of drum 63 and prevents the
possibility of any of them somehow getting stuck in the guide
receptacles 67.
As may be seen from FIG. 4, the wall 76 which is connected to
feeding grid 62 and forms a fixed arc-shaped covering of the inside
of the upper portion of drum 63, is tapered at its forward or
leading end. In this manner, bodies which may come against wall 76
in consequence of the shaking of grid 62 and the relative rotation
of drum 63 and grid 62 are not damaged by wall 76, but are
enucleated by it, and are brought back into the mainstream.
In accordance with another modified embodiment of the invention as
shown in FIGS. 5 and 6, a special tapered extension 77 is movably
connected to the forward end of the fixed, arc-shaped, inner wall
76. This extension 77, because of its mobility, is easily designed
to be compatible for use with constant form bodies, and especially
round bodies, such as pills being sorted.
As shown in FIG. 7, a roll brush 78 can be arranged at the end of
the feeding grid 62 so as to engage it, the roll brush 78 being
driven in an opposite direction to that of drum 63. This roll brush
78 prevents bodies from reaching and contacting the lower edge of
wall 76, and thereby prevents jamming or shearing of the bodies
against the lower edge of wall 76.
The feeding grids 62 represented in FIGS. 1-7 are preferably formed
of plastic. This eliminates the possibility that traces of
corrosion might come off on the tablets, troches, capsules or the
like. However, the stability of plastic is not so great as that of
steel or stainless steel, and there is the necessity to hold and
secure the feeding grids 62 which are made of plastic.
As shown in FIGS. 8 and 10, feeding grid 62 has on all of its rib
members 65 extensions 115 (FIG. 8) which protrude radially into the
interior of the drum 63 and which are connected with one another by
pins 116. Pins 116 are connected to the side wall 117 of the fixed
housing or shell of the drum. Between extensions 115 of feeding
grid 62 spacing rings 118 are connected. The lower portions of the
divider rib members 65 of feeding grid 62 are connected together
only through a single security pin 119 which is adjacent to wall
117, as shown in FIGS. 9 and 10.
As may be seen in FIG. 11, a counter contact 81, against which the
body pushed out is pressed, is arranged underneath the discharge
duct of drum 63. A toothed wheel 80 engages the pickup receptacles
68 to push pills out to prevent jamming. Counter contact 81 is
displaced by an ejected pill and closes a circuit which generates a
counter impulse in counter device 82. After the passage of the body
being pushed out, the counter contact 81 returns to its rest
position under the influence of attached weight 83.
In accordance with the apparatus disclosed in co-pending U.S. Ser.
No. 877,316, alongside the sorting, counting and filling device,
there is provided a control device which supervises the numerical
completeness of the bodies in the individual series of drum
receptacles and which prevents a receptacle series that has not
been fully loaded from being attempted to be unloaded. In
accordance with FIGS. 12 through 18, such a control device
according to the present invention contains on one side of drum 63
counter pins 84 which are each assigned to a pickup receptacle 68
of drum 64. Counter pins 84 protrude out of the drum wall and in
their operational position while passing against counter wheel 85
they push the counter wheel 85 to advance counter wheel 85 by one
step. If, for example, it is determined through photoelectric
control of the numerical completeness of the bodies in the
receptacles of the drum, such as carried out in U.S. Ser. No.
877,316, that bodies or pills are lacking in one or more
receptacles so that the required number is not present, through
return pressure of the counter pin 84 connected to this receptacle
series, for example, by means of an electromagnet 86 (FIG. 18) the
counter pin 84 in question is made non-operational for counting.
Also, as has already been described at length in U.S. Ser. No.
877,316, the control device may operate so that incomplete series
are collected and used for a subsequent filling to insure an
accurate count.
As is clearly seen from FIGS. 15-17, a diverter 87 is rigidly fixed
in the path of counter pins 84. The diverter 87 moves the pins 84
that are in a non-operational position back into the operational
position. For this purpose, pins 84 have a flange 88, which slides
along the oblique surface 89 of diverter 87 whereby pins 84 are
drawn out.
In accordance with FIGS. 15 and 16, the diverter 87 is movable
relative to counter pins 84. Diverter 87 is mounted by means of a
screw 90 which is engaged in the rigid part 91. Diverter 87 rests
by the action of its own weight on a fixed flat boss 92 of screw
90, the non-threaded end 93 of the screw projecting into a
corresponding passage hole 94 in the diverter 87. This arrangement
permits adjustment of the diverter to the particular shape and
position of the counter pins 84. So that the counter pins 84 are
properly maintained in the appropriate bores of outer ring 96 of
drum 64 (FIG. 13), a spiral ring 97 is laid underneath pins 84 in
ring 96, said spiral ring pressing with a light pressure against
pins 84 and generating a certain frictional pressure between pins
84 and their bores.
In FIG. 11 a filler drum 98 is arranged underneath the discharge
duct, said filler drum being divided into several radially
extending receptacles 99, of which each picks up one or more
receptacle series of the drum 63. Drum 98 can for example be driven
by the counter pins 84 of FIGS. 18 through 24 over an
interchangeable counter wheel. The drive may however also be
supplied by electrical means, preferably by means of
counter-generated impulses. Beneath filler drum 98 a pill-bottle
100 is arranged to receive the tablets.
In the embodiment of FIGS. 19 and 20, the inner wall 76, the
feeding grid 62, and the toothed wheel 80 are in such a way
connected with the charging apparatus 101 that they form a unified
integrated unit and may be taken out of drum 64 together. To this
purpose, this integrated unit is movably arranged on a slide 102,
as is more clearly seen in FIG. 20.
The arrangement of FIGS. 19 and 20 makes it possible to adjust for
sorting and counting of bodies of other formats or shapes, and
after removal of the integrated unit, the drum 63 and even in
appropriate cases the feeding grid 62 may be exchanged. Also,
repair and cleaning of the entire apparatus is considerably
simplified by this arrangement, because the inside of the drum and
the individual components of the integrated unit may be laid bare
in the aforementioned manner.
In accordance with FIGS. 21 through 26, drum 63 is comprised of
several outward-removable sections 103, whose seams 104 run
parallel to the drum's axis. At both ends of drum 63 holder rings
105 are provided, by means of which the drum is driven by pressure
rollers (not shown in the drawings). Holder rings 105 are connected
together by means of rods 106 to which drum the sections 103 are
detachably fixed, as seen in FIGS. 22 and 23. The drum sections 103
have recesses 107 at their ends, in which rods 106 of square
cross-section rest when the drum is assembled. Because the frame
formed by rods 106 is rotatable by itself, it can always be
displaced in such a way that drum sections 103 may be taken apart
unhindered by wall 108 which partially covers the bottom portion of
the resulting drum 63.
Rods 106 have at their ends threaded pins 109 and guide pins 110,
as shown in FIGS. 25 and 26. By means of guide pins 110 they engage
in corresponding boreholes 111 of holder ring 105. Threaded pins
109 project into a bigger bore hole 112 on the other side of holder
ring 105, where it is engaged with a mating threaded member 113 to
secure rod 106 and holder rings 105 together.
Also, the ends of drum 103 are preferably fastened to rods 106 by
means of screws 114, as shown in FIG. 23.
The above-described arrangement permits a particularly simple
exchange of drum when the bodies to be sorted or counted change in
format or shape. It furthermore permits simpler repair and cleaning
of the drum. Finally, also, the overall apparatus arrangement is
greatly simplified.
If it has been previously determined that bodies of various
different formats or certain different shapes are to be counted or
sorted, it is useful to provide the device with several
dismountable drums 63 for different body sizes or shapes. This
enables operation to be easily optimized for each type of body
being operated on.
In order to prevent the introduction from above of dust or other
foreign bodies in the drum, covering layers, preferably
transparent, may be provided, which for example are connectable to
the device or can be laid on it. The covering layers may have
corresponding hand grips. They must be made and arranged in such a
way that when they are removed the drums can be taken out to be
changed or cleaned.
Referring to FIG. 27, in order to maintain the level of the bodies
in the fixed storage vat 120 containing feeding grid 62 at a
constant level, a supervisory apparatus 121 is provided which
provides two light beams 122 and 123, one above the other. If the
supply of bodies to be counted falls below the lower light beam
122, a single is generated by the presence of the complete light
beam and the introduction of new bodies into the storage vat 120 is
actuated. If the upper light beam 123 is reached and interrupted,
the introduction of new bodies is automatically switched off.
In the embodiment of FIGS. 28 and 29, drum 63 as described in Ser.
No. 877,316 rotates on support rolls 124. It is detachably
connected on both of its sides to two outer barrel rings 125 and
126. Barrel ring 126 is connected to the drive by means of a gear
chain 129 and sprockets 130, and thereby sets drum 63 in rotation.
Barrel ring 125, which is not connected with the drive, is together
with support rolls 124 axially displaceable, so as to facilitate
changing of a drum 63, for example when a change of format or shape
of the bodies being counted may be desirable. For this purpose a
manually displaceable worm gear 132 engages in the base support 131
of barrel ring 125 which is provided with inner mating threading.
Gear 132 is turned to axially displace the support 131 for removal
of a drum 63.
In the embodiment of FIGS. 30 and 31, drum 63 has ring-shaped
pulleys 133 at both of its ends, in which V-belts 134 are engaged.
On one side of the drum the V-belt 134 is driven by a motor 135 and
tightened by a tensioning pulley 136, which can be laterally
displaced to regulate the tension on the V-belt 134. On the other
side of drum 63, the V-belt runs over an undriven roll 137.
As has been experienced in practice, the containers in which the
bodies must be placed after sorting and counting are of greatly
varying size, especially in the pharmaceutical industry. In the
embodiment of FIGS. 32 and 33, accordingly, the counter device 138
is vertically adjustable relative to the table or platform support
139 on which containers 140 are arranged. The containers 140
receive the counted bodies. Drum 63 is rotatably set in rigid side
walls 141, which on their lower ends have outwardly projecting
flanges 142. Downwardly projecting pins 143 are inserted through
bores in the flanges and at their lower ends are connected to a
plate 144. Plate 144 has a threaded insert 145 in its central
portion in which a threaded screw 146 is engaged. By means of a
handwheel 147, screw 146 is tuned. The end of screw 146 is axially
immovably and rotatably mounted to an extension piece 148 of table
139.
By turning hand wheel 147 the counter device 138 can be raised or
lowered at any time, as is apparent from FIG. 32, so that the
system is easily adjusted to a desirable level or size of
containers 140 into which the bodies are to be deposited.
It should be clear that various modifications can be made without
departing from the inventive concepts set forth in the claims.
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