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Патент USA US2412338

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Dec. 10, 1946.
1.. JASPER
v
2,412,338
METHOD FOR PLUCKING FOWL
Original Filed Nov. 13, 1940
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Patented Dec. 10, 1946
‘2,412,338 '
UNITED STATES PATENT‘, oFFl-cg'
METHOD FOR PLUCKING Fowl,
Lenus Jasper, Orland, Calif., 'assignor‘ to Seth S.,
Barker, Ottumwa, Iowa
Original application November 13, 1940, Serial No.
365,439. Divided and this application April 17,
1945,~Serlal No. 588,859
6 Claims. (01.17445)
1
, My invention relates to the plucking of fowl,
' and more particularly to a method for accom
plishing such result.
..
I
2
,' disposed bars 35 anchored to a suspensioncyl
inder 31 adjacent a closed end thereof.
Among the objects of my invention are to
provide an improved method for the removal of CK
‘feathers from fowl by use of a liquid, such as
The
vertical sections 39 ofuthis rectangular portion.
are hinged at‘the extremities of the horizontal
bars 35 and joined to the wing portions 33 of the
v
’
frame.
vwater.
‘
'
_ The vv-shaped portion 3| terminates at its apex
Additional objects of my invention will be
‘ in a vertically disposed tube 4|. One side of the
brought out in the following description of the
V-shaped portion is split, enabling both sides
,, same, taken in conjunction withmthe accom 10V of the frame to swing on their respective hinges,
‘ .panying drawing wherein the ?gure is an ele
and spreading ofthe frame, in the‘ absence of
anyrestrainin-g force, is assured by spreading
nvational view of a fowland water supply means
whereby my method may be used.
I
means disposed in each of the corners of the
This is a. division from my,app1ication, Serial
,No. 365,439, ?led November 13, 1940.
‘ rectangular portion of the frame.v Each'ofsuch
spreading means comprises a compression spring
15
‘In its broadest aspects, my invention accom
plishes the removal of feathers from fowl by sub
' 43 disposed about a rod 45 which is hinged to
. jecting the bird to a sustained flow of ?uid, pref
erably water, at high velocity suf?cient to effect
removal of the feathers therefrom. ,The inven
20
tion, preferably, involves some preliminary step
the vertical side member‘39 of the rectangular
section, and, passes through a lug ,41; depending
from the adjacent horizontal bar 35. The frame
may be retained against such spreading, when
in use,'by means of a locking tube 49 disposed
to facilitate the removal of the feathers in this
about one end of the split‘ portion, and having
manner. For example, in preparation for 'the
a longitudinal slot therein to receive a guide pin
removal of the feathers, I prefer to treat the
bird to. relax and soften thefeather follicles,_ and 25 Telescopically disposed about thesuspensio-n
this may be accomplished in any suitable man
cylinder 31 is another cylinder 55 to which are
ner, such as exposingthe bird to a bath of hot
attached a pair of leg clamps 51. Each of such
water, though I prefer to utilize the same appa
legs clamps includes a strip 59 of metal pivot
ratus which directs the high velocity ?uid against
ally secured at the upper portion of its support
the body of thebird to effect removal of the ' ing cylinders This strip is bent at an intermedi
feathers, and thereby effect economies in both
ate point, to provide an angularly disposed sec
time and cost, In using this apparatus to per
tion 6! and an adjoining end section 63.
form this preliminary step, I direct against the
-,A second element of the clamp comprises a
bird a stream of liquid, such as water, at high
straight strip 69 of metal pivotally securedto
temperature but at a reduced pressure, and con
; the'clamp supporting cylinder 55 at a point below
tinue the same for a brief period of time sufli
the point of attachment of the ?rst member
cient to accomplish the desired relaxing and sof
59 and operatively associated with part 63.
tening of the feather follicles. The apparatus
The further details of the leg clamps and the
is arranged so that both the preliminary step,
means for adjusting themare disclosed in my
and the ?nal step of removing the feathers are
application above mentioned, and are not essen
accomplished most emciently' in sequentially
tially pertinent to this application.
timed operations. Practically all the feathers
In each of the wing-portions of the frame,
there is a wing ‘clamp 81.
may thus be removed, except for possibly some
of the more strongly embedded tail and wing
In the tube 4| at the apex of the V-section of
feathers which may subsequently and conven
the frame, there is disposed a spring I I3 anchored
iently be plucked by hand.
to an adjustable block I I5 in the lower portion of
My method may be practiced, for example, with
the tube. The upper end of the spring connects
apparatus such as shown in the drawing.
to a spool H‘l under tension. The spool spans
A fowl suspension frame is designed to follow
the upper end of the tube and carries a hook H9.
the general" contour of a bird 21 with its wings
outstretched, and includes an upper, substantially
rectangular section 29, a lower section 3! of
50
This mechanism constitutes a head grip for en.
gaging the head of a fowl when a fowl is sus
pended in the frame.
.
‘
V-shape, and oppositely directed intermediate
The fowl frame is pivotally suspended from a
wing sections 33. The upper, substantially rec
conveyor, not shown, by a member I29 which has
tangular portion includes a pair of horizontally 55 integrally extending therefrom in an upward di
I
.
.
.
I
2,412,338
.
I
4 Y
>
the second ‘supply source ‘must be sui?ciently high
rection, a bracket [3] for receiving a track roller '
I33. This. roller is adapted to engage and ride ‘
to strike the bird with’ a velocity suf?cient to bring
about a removal of the feathers.
upon a track forming part of the conveyor.
Means for ..
supplying liquid need not‘otherwise‘ be shown.
The travel of the water will preferably be
first positioned in the leg clamps. The head of ‘5
the bird may be ?xed against swinging or other _ against the grain of the feathers.
In suspending a fowl in the frame, the legs are
I
It will thus be apparent that the objects as set _
movement, by engaging the hook i la in the lower ‘
forth by me are fully realized. While I have dis-‘ .1
closed my apparatus in great detail, it will be ap
mandible of the bird, against the tensioning effect 3
of the spring I 13. One of the wings may then be .
gripped by one of the wing clamps 81 and similar- ‘10 parent that the same may be subject to modi?ca-~
ly the second wing ‘may be gripped by the other ‘ . tion and alteration, without departing from the’
spirit thereof, and I, therefore, do .not desire
wing clamp, the springs I09 associated with these ‘
to be limited in my protection to the details dis
clamps tending to tension the wings. and hold
closed and described, except as may be neces
them in outstretched position.
‘
“
For applying jets of water to the birds, I prof 115 sitated by the appended claims.
I claim as my invention:
‘
I
vide pipes I 49 which follow closely the'contour v
1. A method of defeathering fowls consisting of
of a fowl frame, particularly above the wing sec- ‘
directing streams of water at high velocity against
tions thereof. The pipes are perforated and fitted
with nozzles l5! pointing in a generally down-5
said fowls.
'
ward direction so as to cover the entire length of 3 '20 2. A method of defeathering fowls. which con
sists of subjecting the fowls to water'at a pre
a bird suspended in a frame and caused to pass‘
determined temperature, and thereafter directing
between ‘a pair of such upright‘ pipe members.
7 As many water supply pipes may be provided as .
are necessary.
' streams of water’at high velocity against said '
fowls.
‘
‘
During the travel of the fowl frame around the} 25 3. The method of plucking fowl'comprising sup-~
porting said fowl against substantial displace
conveyorwith a bird suspended therein, the'birdi
ment and'forcing a ?uidvmedium in the direction
‘is exposed to, ?rst, the preliminary treatment for‘
of said fowl at a velocity sufficient to remove
relaxing and softening the feather follicles, ‘and
feathers therefrom. '_
I i
, I
secondly, to the feather removal treatment. In‘
4. The .method of plucking, fowl comprising
, the course of the preliminary treatment, the bird‘ 3o ,
supporting ‘said fowlaga‘inst substantial displace- is'iexposed to a spray of hot water at low velocity
ment and forcing a ?uidmedium against the grain
from the nozzles l5l, while during the actualv re-,
of the feathers of'said fowl at ‘a velocity sufficient ‘
moval of the feathers, the bird is then subjected‘
‘ to water, preferably at a lower temperature but at‘, '
a considerably higher velocity. Inasmuch as the 35
preliminary step need involve but a small portion‘
of the total time of ‘travel’ around the carrier,‘ '
the apparatus is designed, to automatically shift‘
‘ v ‘from the preliminary treatment to the subsequent‘
to remove feathers therefrom. 1'
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5. The method of , plucking fowl comprising
suspending said fowl against substantial lateral
displacement, directing a liquid at elevated item-V
perature and at relatively low velocity against.
" saidfowl and for a period of time su?icient to
step at the properv time during movement of the ‘40 soften and relaxithe feather follicles, and then '
forcing a fluid against said fowl at a lower tem-f '
frame about the carrier, at the same time chang-‘
‘ I ing the water temperature and velocity'in accord
ance with the requirements of each step.
_
perature but at a’ higher velocity sufficient to
remove the feathers therefrom.‘
To accomplish such mode of operation, I provide
6. The method of- plucking fowl comprising
‘lower temperature than the‘?rst supply, some
where of the order of 85° F. These pressures and
said, fowl,- and rotating said fowl to successively
expose different‘po'rtions of the body thereof 'to
two sources of supply ‘(not shown), one of which 45 supporting said fowl against substantial move
ment, exposing the same to a liquid at anelevated
provides water at high' temperature, preferably
temperature ‘to relax‘and soften the feather 'fol
‘of the order of 125° F. and at relatively low pres;
licles, directing a ?uid medium at said fowl and
sure, of the order of 75 lbs., while the other source‘
against the grain of the feathersat a high‘veloc
of supply furnishes water, preferably at a pressure
of ‘the order of 150 lbs. per square inch, but'at a 50 ityesuf?cient to detach feathers from the body of
temperatures are cited as illustrative only, and are
not critical, though the pressure of the water from
I
said high velocity ?uid medium. .
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LENUS JASPER. .'
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