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Патент USA US3067026

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Dec. 4, 1962
Filed July 15, 1959
_ _
[-\2 0a,
[re/7e R. Rozyc/(i
atent ‘O "
Patented Dec. ll, 1962
knurled gripping portion 12 whereby said collet may be
grasped to rotate it.
The collet 9 operates in a conventional manner whereby
when it is turned by the gripping portion 12 to move up
Irene R. Rozycki, 5712 Harvard Ave., Cleveland, Ohio
Filed July 15, 1959, Ser. No. 827,990
2 Claims. (Cl. 23-259)
wardly in the sleeve 4, the tapered ?ngers it} are wedgingly
forced into the tapered seat 11 which causes them to be
This invention relates to an adjustable support or rack
cammed radially inwardly against the supporting column
for holding bacteriological handling instruments such as
3 to ?rmly grip said column. To adjust the rack vertically,
inoculating loops, needles, forceps, and tweezers during
the operator loosens the collet 9, moves the sleeve 4
the sterilization thereof. Such instruments are commonly 10 to the desired height, and then retightens said collet. The
used in a bacteriology laboratory, and the conventional
upper end 4b of the sleeve 4 projects upwardly above the
method of sterilizing them is to place the contaminated
column 3 and is slightly ?attened in one dimension to
ends thereof in the ?ames of ‘a Bunsen burner. Once the
provide a non-circuit socket 13.
instruments are sterilized, it is desirable that they be main
The tray 5 is mounted, at the bottom surface thereof,
tained in readiness for use in such manner as not to be
come further contaminated by bacteria outside of the
particular culture media to be handled.
It is, therefore, a primary object of this invention to
15 upon one end of a short supporting arm 14. The arm
14 is secured to the tray 5 in any suitable manner such
as by soldering, brazing, or welding. The downwardly
directed endof the arm 14 is provided with a clevis 15
provide a rack for holding bacteriological handling in
adapted to inter?t an upwardly projected pivot portion
struments for purposes of sterilization and for ready and 20 16 of a stub shank 17 which is adapted to rernovably inter
?t the upper socket 13. The clevis l5 and the pivot por
- Another object of this invention is to provide a rack
tion 16 are adjustably pivotally secured together by means
of the above type which is vertically adjustable and hori
of an adjusting screw 18 which projects through suitable
zontally tiltable whereby the instruments may be placed
openings in said clevis and said pivot portion and is prefer
in any desired position and at an optimum angle for 25 ably thread ?tted into one arm 15a of the clevis 15.
projecting the contaminated ends thereof into the ?ame
By loosening the screw 18, the rack 5 may be tilted to
of the Bunsen burner.
any desired angle about the pivot portion 16 of the re
Yet‘ another object is to provide a device having the
movable shank 17. Said tray may be readily removed
above characteristics whereby the instruments are mov
from the rack 1 if so desired by lifting the stub shank 17
able into and out of the burner ?ame without the neces
sity of directly handling them.
30 out of the socket 13. In this way an entire tray of in
struments may be removed from or placed on the rack 1.
A further object of this invention is to provide such
a rack upon which the instruments may be quickly and
easily placed and removed and which will be safely and
adequately held in readiness for immediate use by the
laboratory technician.
Further objects of this invention and the invention
itself will become clear from the following description
and the accompanying drawings, in which said drawings:
The tray 5 is preferably manufactured from ?at sheet
metal and comprises a ?at, rectangular plate 20 having
upstanding wall portions 21 at two opposed edges there
of, the upper end of said wall portion being right angularly
bent toward each other whereby they are parallel to
and spaced above the said plate 29 as indicated at 22.
As best seen in FIGS. 2 and 3, the wall portions 21 are
slotted as shown at 23, said slots extending downwardly
FIG. 1 is a side elevation of the rack and an associated 40 to within a short distance of the plate 29. The slots in
one of the walls 21 are longitudinally aligned with the
Bunsen burner illustrating the use of the rack, said rack
being shown partially in section;
FIG. 2 is a plan view of the supporting tray of the rack
as seen from the line 2-2 of FIG. 1;
FIG. 3 is a section taken along the line 3——3 of FIG. 1;
FIG. 4 is a section taken along the line 4—4 of FIG. 1;
slots in the opposite said wall and extend upwardly
through the bent portions 22.
. As herein illustrated, the support rack of this invention
is shown in association with a conventional Bunsen burner
B of the type commonly used in laboratories. However,
it will be understood that any suitable sterilizing means
may be used.
FIG. 5 is a fragmentary elevation similar to FIG. 1
The burner B comprises a ‘base 30‘ having an upstand
showing a pair of forceps mounted in the tray.
Referring now to the ?gures of the drawings in all 50 ing gas conduit 31 surmounted by a gas jet 32 positioned
within an air opening 33. A burner table 34 extends up
of which like parts are designated by like reference char
wardly above the gas jet 32 and emits a sterilizing ?ame
acters and particularly to FIG. 1, at 1 is shown the ad
F into which the contaminated work ends of the handling
justable rack which comprises a base 2, an upright column
instruments are placed.
3, a vertically adjustable sleeve '4, and a tiltable tray 5.
By means of said aligned slots 23 of the tray wall por
As herein illustrated, the base 2 has a centrally disposed,
tions 21, a bacteriological handling instrument, such as an
vertically upstanding collar 6 projecting from the upper
innoculating loop or a needle, is supported upon the tray
surface thereof, said collar providing a socket 7 into
5. The instrument, shown at 24, is placed with the shank
which the supporting column 3 is slidably and rotatably
25 thereof in a pair of the aligned slots 23, the handle 26
?tted. The sleeve 4 is slidably telescoped over the col
umn 3 at the uppermost end thereof and is vertically 60 of said instrument being adjacent the outside surface of
one of the walls 21. By tilting the rack 5 about the pivot
slidable thereupon. The lowermost end 4a of the sleeve
16, the contaminated end or loop 27 of the instrument
4 is internally threaded as indicated at 8 and adapted
to receive an externally threaded collet 9. The collet 9
can be directed at a convenient angle into a ?ame F of a
conventional Bunsen burner B or other sterilizing device.
is centrally, longitudinally bored at 9a to slidably ?t over 65 The handle 26 of the instrument 24, which is consider~
the column 3 whereby it is threaded into the sleeve 4.
ably larger than the slot 23, prevents the said instrument
The upwardly directed end of said collet is provided
with a plurality of tapered, circumferentially evenly inter
spaced ?ngers 10. The tapered ?ngers ~10 are adapted to
wedgingly inter?t a complementarily tapered seat 11 in 70
from slipping out of its adjusted position. It will be
understood that a plurality of such needle-like instruments
the sleeve 4. The lowermost end of the collet 9 is pro
may be simultaneously mounted upon the same tray V5
to be sterilized simultaneously.
After the instruments are sterilized, if they are not to
vided with a radially outwardly projecting, preferably
be immediately used by the technician, they may be left
on the tray 5 and are removable from the ?ame of the
justable thereon, said sleeve having a cylindrical lower
portion adapted to receive said column and an upper
axially offset cylindrical portion having an internal diam
Bunsen burner merely by pivoting the support column 3
in the socket '7.
The decontaminated work ends 27 are
thus rotated away from the ?ame without the necessity
of handling the instruments.
eter greater than the internal diameter of said lower por
tion, securing means associated with said sleeve for op
tionally securing said sleeve to said column in any ver
Referring again to FIG. 2, the plate 29 is provided
with a longitudinal aperture '23 adjacent one edge thereof
whereby instruments of other shapes, such as tweezers
and forceps, may be placed on the tray 5. The said aper
ture 23 may be used in various ways for various instru
tically adjusted position, a tray for holding said instru
ments, said tray comprising a flat, rectangular plate hav
ing upwardly perpendicularly disposed walls adjacent to
opposite edges thereof, said walls having slots therein
ments, examples of two such uses being shown in FIGS.
disposed at right angles to said plate, the slot in one
3 and 5.
said wall being so positioned relative to the slot in the
In FIG. 3 there is shown in broken line a pair of
other said wall as to nestingly receive a shank portion
tweezers 4t) comprising a pair of parallel leg members
of a bacteriological handling instrument simultaneously
41 and 42 which are integrally ‘joined at the uppermost 15 disposed in both said slots, said tray having an arm ex
ends thereof as indicated at 43. The leg member 41 is
tending downwardly therefrom, a cylindrical tube pivot
threaded downwardly through the aperture 28 with the
ably connected to said arm, said tube being rotatably
leg member 42 being positioned outside the adjacent edge
mounted at its lower end in said upper cylindrical por
29a of the plate 243. In this position, the tray 5 may be
tion of said sleeve, whereby said tray may be vertically
tilted to any desired angle to bring the lowermost work
adjusted and tilted to any desired angle.
end 44 of said tweezer into contact with the ?ame F of
2. An adjustable rack for bacteriological handling in
the burner B.
struments comprising a base, a vertically upstanding col
When such instruments as tweezers are being sterilized,
umn rotatably mounted in said base, a continuous sleeve
it is, of course, necessary to tilt the tray 5 away from the
slidably telescoped over said column and vertically ad
burner thereby pivoting the work end 44 of said tweezer 25 justable thereon, said sleeve having a cylindrical lower
upwardly to an optimum position for entering the ?ame
portion adapted to receive said column and an upper
F. This principle is well illustrated in H6. 5 wherein
axially o?set cylindrical portion having an internal diam
a pair of forceps ‘Ed is mounted in the aperture 28. Said
eter greater than the internal diameter of said lower
forceps comprise handles 51 and jaws 5?; pivoted together
portion, securing means associated with said sleeve for
at 53. The jaws 52 are threaded downwardly through
optionally securing said sleeve to said column in any
the aperture 23 to project below the plate ‘20 whereby
vertically and rotatably adjusted position, a tray for
when said plate is tilted away from the burner B, the
lowermost work end 54 of the forceps is pivoted upwardly
holding said instruments, said tray having an arm extend
ing downwardly therefrom, a cylindrical tube pivotably
and outwardly where it is readily accessible to the ?ame
connected to said arm, said tube being rotatably mounted
F of said burner.
35 at its lower end in said upper cylindrical portion of said
It will be readily understood that both the needle-like
sleeve, whereby said tray may be vertically adjusted and
instruments 24 and the plier-like instruments 40-50 may
tilted ‘to any desired angle.
be sterilized simultaneously by using two burners or
sterilizing devices at opposite sides of the rack 1. It
References Cited in the ?le of this patent
will also be understood that simple modifications in the 40
rack may be made, such as modi?cations in the size or
number of the slots 23 or the aperture 28, without depart
Rinderer _____________ __ July 2, 1957
ing from the spirit of this invention or the scope of
the appended claims.
What I claim is:
Fisher “Modern Lab. Appliances,” Catalog 59, pp.
1. An adjustable rack for bacteriological handling in
751, 860 and 861.
struments comprising a base, a vertically upstanding col
umn rotatably mounted in said base, a continuous sleeve
slidably telescoped over said column and vertically ad
Kennedy: Design, June 1959, p. 44.
Nadel: Chemist Analyst, vol. 43, #1 (1954), p. 25.
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