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Патент USA US2133989

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Oct. 25, 1938.
Filed Oct. '22, 1936
4 Sheets-Sheet’ 1
Oct. 25, 1938.
v .
Filed Oct. 22, 1936
/jr 3
4 Sheets-Sheet 2
A 0&(25, 1938.
Filed 001;. 22, 1936
4 Sheets-Sheet 3
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Tis. a.
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Oct. 25, 1938.
Filed Oct. 22, 1956
4 Sheets-Sheet 4
44 43
Patented Oct. 25', 19-38“
‘ I 2,133,989
' 2,133,989
Charles‘ Kannel, Cleveland, Ohio
i 7
Application October 22, 1936, Serial'No. ‘106,079
14 Claims.
The presentinvention relates to improvements
in hide tanning apparatus, and has as itspri
mary. object to. facilitate the process of tanning
so asto materially reduce the time required :for
5 effecting thorough penetration or “striking”. of
the tanning liquor into the hide.
; , Figure
In thedrawingsz,1 is a perspective
, ; , view. ,.
of ' a.. tanning ape
paratus embodying my invention;
Figure 2~is a'perspectiveview‘ of a carriage for
supporting the hide racks;
Figure3 is a perspectiveview of the rack ele
.1 -
It‘has heretofore been proposed inthe gen
ment used in my apparatus‘;
erally approved method of tanning hides to hang
. Figure 4 is an enlarged fragmentary sectional
the hides on or over supporting sticks, andgto,
view,~showing more clearly the arrangement of
the'hideesupporting frames and hides mounted 10
l0v slowly reciprocate the hides so disposed up and
down in a vat of liquor, but such'operation usually
takes from two to three months to produce proper
tanning results, primarilydue to the position and
movement of the hides, which is such that ‘the
-a $11 liquor cannot effectively attack or strike through
‘ Figure ,5' Ba detail. perspective view». of the
mounting end of av hide-supporting frame and its
cooperating rack supports and hide, clamp;
Figure 6 is a detail view-of the hide-clamping 15
the hides, particularly the thicker .portionat the , or holding bar usedrin conjunction with the hide‘
center line of the hides;
. ,
supporting frames;
.In ‘carrying out my method, however, I employ
anovel arrangement of frames upon whichthe
2Q hides are so fastened that'in: thereciprocation
and oscillation of saidlframes the liquor in which
they are immersed is pocketed by the; hides with
such force or pressure as to cause it .to penetrate
even into the thickest portion.‘ of the hidein a
25 very short period oftime. compared Withthatof
the former “rocking” processes. I
30 zigzagging back and forth in a rack- from one-end
to the other, said frames allowing the hides tonbe
attached thereto with the center line of each hide
at the apex of the V. Thus, the hides alternate
in the direction of facing and receive the, full
35 force of pressure of the liquor at each reciprocal
movement of the racks which are removably
mounted upon a suitable carriage or, carriages
adapted to be driven to and fro by any desired
reciprocating mechanism.
It is further an object of my invention to-pro
hook devices at its ends to enable said hooks» to
engage in suitable hanger ‘eyes carried by op—
posing sides of an open rack, so as to?lqposition
4 ' each frame transversely and diagonally across
the rack, thereby forming an assembly ,unit. ca-V
pable of accommodating a very large, number of
hides which may be readily hung- therein and sub
50 sequently bodily disposed inor removed from the
vat of tanningliquor by hoisting apparatus of a
Other objects and advantages of?the invention
will be hereinafter set forth and. the novelrfea-y:
5,6, tures thereof de?ned by the appended claims.‘ ‘ _
about on the-plane indicated by line 'l-—'| of
Figure-4 showinga slightly modi?ed. method of 20
hangingxthe hides in‘ the hide supporting frame;
, Figure '8 is a top plan of ajslightly modi?ed form
of apparatus embodying a plurality of racks and
carriages designed to reciprocate in opposing rela
tion to eachiother;
,. I
form of apparatusiintwhich the rackswith their
supporting frames, are oscillated in the tanning
Figure lOkis a longitudinal sectional view of a, 30
modi?ed ‘form: of- apparatus in which the racks
and frames are reciproc'ated in a, vertical plane
in thevats‘ instead of a horizontalplane;
Figure 11' is ,a fragmentary view, partly in sec
tion and partly in elevation, of the rack and hide 35
supporting frames used in the apparatus of Fig
Figure afragmentarysectional view taken
on the-plane indicated by the line IZe-IZ of
vide a rectangular frame, above referred to, with
conventional type.
Figure 9 is a diagrammatic View of a modi?ed
.More speci?cally, my invention,comprisesga.
series of open hide-supporting frames arranged
in V-formation, or_a series of suchformations,
' Figure. 7 .is a transverse sectional view taken
Referring .to .they drawings, and speci?cally de
scribingmyinvention, l designates a tank‘or tan—
ningvat adapted toreceive tanning liquors. At
each. end'vofjthisvat, a track member 2~is pro
vided-and upon these is supporteda carriage 45
which comprises an open rectangular-‘frame 3
havingwheelsorrollers 4 at each end. This car-;
riage, best seen in Figure 2,_is adapted to be
shifted to and-fro by any desired mechanism, that
shown'for, this purpose being merely exemplary 50
of onetype, and consistingv of the motor 5' which
drives a worm shaft 6 and worm gear 1 to which
is eccentrically connected'a crankp8. The crank
in turn: isconnected to a- lever 9 pivotally secured
at one endlto the end ‘of the‘vat and at its other 55
end adjustably connected to an endless cable ID.
This cable is secured to the carriage 3, as by
means of the arched arm II.
In the use of this apparatus, it is to be under- 7
stood that the-hides are supported in a novel
form of rack which is removably mounted in or
disposed upon the carriage 3.
This rack, as seen
in Figure 3 of the drawings, conforms to the shape
of the carriage, and is constructed of open paral
10 lel side frames I2 and end frames l3.
Each of
tacts with the frames ‘so that in the operation of
the apparatus no injury to the grain side from
abrasion or pressure will occur and the grain side
will directly contact with the tanning liquor and
will be subjected to the pressure which forces the
liquor to act upon and penetrate the hide as
hereinafter set forth.
When the hanger of the hides in the rack has
been completed, the rack with the suspended
frames is elevated by any suitable hoisting means 10
these end frames has a solid panel l3’ at one end
which is connected to the hook 2| carried by the
and a window opening l3" at its other end, for
supporting bars 22 attached to the top rails of
reasons to be more clearly pointed out as this ' the rack device. By this means the rack is bodily
lowered into its suspending position in the car- description proceeds.
Along the top and bottom rails of the side
frames I2 are secured a series of eyes or hangers
H in which hooks on the hide-supporting frames‘
later to be described are received.
In order to suspend this rack in the carriage
20 3, the ends 13 are provided with lateral extensions
or arms l5, which are adapted to rest upon the
sides of‘the‘ carriage,.as clearly shown in Figures
and 4.
riage 3 mounted on the top of the vat. Assum 15
ing that the desired tanning liquor has been intro
duced into the vat, the reciprocating mechanism
is now operated, causing the carriage to move
the hide supporting frames to and fro. At each
reciprocal movement, the liquor is trapped in the 20
pockets formed by the hides and particularly at
the apex of reach V formation where the hide
' is thickest, and such trapping has a tendency to
An. important feature of .my invention resides
in the construction andiarrangement of the hide
force the liquor to penetrate the hides, particular
ly at the thicker central portion thereof. It will 25
supports or frames, and reference will now be
made to Figures 4 and 5 in this connection. Each
frame 16 is rectangularin form and provided
with a vertical center bar 11 to thereby provide
30 a pair of openings over which the hides are hung
in a special manner. At each end, the frame has
be understood that this reciprocating motion may
readily be controlled as to speed of movement,
which, in turn, regulates the pressure which is
exerted by the liquor in the action of penetration
above referred to,.and by» this means the process 30
of striking the hides is greatly facilitated and the
an upper and a lower hook [8 by means of which
the frame is hung in the rack eyes l4 at oppo
site ends in a diagonal position, as shown clearly
in Figure 4 of the drawings. '
'Inthe operation and.use of this apparatus as
thus far disclosed, it will-be understood that the
frame members 16 are ?rst introduced or hung in
the rack l3 so'as to form a zig-zag arrangement,
40 such. as‘ shown in Figure-4, extending fromone
end of the rack to the other- While, of course,
this may be done when the rack is on the carriage
and in the vat, as shown in Figurel, the prefer
able method employed is to removethe rack from
the vat to a. convenient place for attaching the
hides to the frames.
When the .frames are in the position above
referred to, a hide isattached to. each pair of
frames in the manner shown in Figure 4, where
in the'le'ngth of each hide-supporting frame corre
sponds to one-half .of' the width of. .the' hide.
That is to say, ‘of the. hide a is tacked
or secured to one frame 16a over its openings, and
the other half of thehide is attached to the ad
jacent frame I6b over itsv corresponding open
Since it is not;~
~ to pass
. mem
bers ‘through the thicker portion of the hide
along a central line,1I employ a bar l9, shown
(30 clearly in Figs. 5 and 6, which has at its ends hook
elements 20 to engage in the eye I4 to which the
two adjacent‘frames ‘16a and Hit) are connected.
Thus the bar l9- will hold the central vportion of
the hide in the stretched position'show'n in the
drawings and the same method of attachment of
the next hide is followed so that the hide will be
disposed‘between the frame l‘lib and its next ad-'
jacent frame I60. The-hide between the last
mentioned pair of frames will therefore face in
70 the opposite direction to that which is attached
time for completion of the tanning process re
duced to a material extent.
During the tanning operation, it is also to be
understood that the liquor may be changed as
many times as desired without removing the
hides from the vat, a drain cook 23 being provided
for use in this connection. When the tanning
operation has been completed, it is only necessary
to apply the hoisting apparatus to the elevating 40
hook 2| and remove bodily the rack with its
hide-supporting frames‘to the location for dis
mounting the hides therefrom.
. In Figure'l I have illustrated a slightly modi?ed
arrangement of the hides. It will be understood 45
that the frames l6 may be made in length, dou
ble the width of" a half section of the hide in
which .event,.'when the hide is attached to the
frames in the. same manner hereinbefore de
scribed, the half section attached to the frame .
Ilia of Figure 4 will cover the opening l6’ and
the other half section of the hide Will cover the
opening I6’ of the next frame IBb. This will
leave the openings at the other ends of the frames
uncovered and allowrthe tanning liquor to act 55
upon the ?esh side of the hide as well as upon the
grain side.
Itherefore ‘desire it to be understood'that I
do not wish to be retricted as to theparticuiar
manner in which the hides are attached to the 60
frames other than that they should follow the
general arrangement so as to produce pockets in
theapex portion of the V-formation of the frame.
- In Figure 8 of the drawings, I have illustrated
a slight modification of apparatus wherein two
racks A-and Bare arranged in the same vat. By
suitable connection of the arching arm Ila to
one strand of the endless member Illa and the
other arm llb to the other strand- of the mem 70
to the frames Mia and‘ IN). This same arrange-'
ment is followed throughout the frames from one
ber Illa, the‘ two racks may be moved simultan
eously in opposing directions. This greatly facili
end of the rack to the other.
tates the operation of tanning with a larger num
ber of hides, and the'reciprocatingaction of the
respective racks A and B in this arrangement has
It will be understood that in' this arrangement
the ?esh side of the‘hides'faces the racks‘ or con
a tendency to increase the pressures of the liquor
, upon the hides hung in the respective racks;
I desire it to be understood that the foregoing
arrangement and operation of this apparatus may
be modi?ed in various ways, and I do not wish to
be restricted to the details of construction here
inbefore set forth.
As exemplifying a further method andappara
tus for tanning hides, reference is made to Fig
ure 9 wherein the rack constructed and arranged
in accordance with that hereinbefore described
is suspended from a support 24, so that the racks
depend into the vat and may be swung about said
supports in any desired manner. To this end, as
diagrammatically shown, a crank wheel or gear
worm 39;‘wh1'chiin turn: operates the wormig'ear 4D
to which the connecting rod M is eccentrically
connected'at one end. The other end of this
rod 4| is connected to the beam at a point to
one side of the central beam pivot 42,.as at 43.
It will be obvious that the degree of lift im
parted to the hide supporting racks may be con
rolled by shifting the point of attachment of the
rod 4| toward or away from the beam pivot 42.
In this connection there is .shown a connecting
pin“ for this purpose.
~ In the operation-of this form of the apparatus,
25 is connected by the rod 26 to the suspending
the hides mounted in the supportsare moved
upwardly and downwardly in the tanning liquors
in the respective. vats and pressure isexerted by 15
the pocketing action of the hides, tending to force
arms 21 of the rack which will thus be oscillated
the liquors to penetrate the same in a compara
to and fro in the liquor contained in the vat.
In all of the forms of the apparatus above set
20 forth, the rack or racks and frames are moved in
substantially a horizontal plane to and fro, but
this same arrangement may be employed in an
apparatus in which the frames are moved up
wardly and downwardly in the tanning vats to
25 accomplish the same result.’ Such an arrange
ment as just referred to is disclosed in Figures
10 to 12 of the drawings wherein the rack mem
ber 28 is formed at one side with sockets or open
ings in the top and bottom side rails 28' to re
30 ceive the ends of cross rods 29, whereas the op
posite top and bottom rails 28" are provided with
open slots to receive the opposite ends of said bars
or rods. With these open slots 30, slide bolts 3|
are adapted to co-act so as to engage with the
35 ends of the bars and lock them in place.
Hide-supporting frames 32 are arranged in the
rack so as to form the vertical up and down zig
zag arrangement corresponding to the horizontal
zig-zag arrangement of the preferred form and
40 the bars 29 are disposed intermediate the contigu
ous ends of the frame, as best seen in Figure 11
of the drawings. Each of these bars is provided
with a series of pins or penetrating elements 33
which are passed through the central or thicker
45 portion of the hide in sustaining these hides in
the racks.
Any method of procedure may be followed‘in
hanging these hides so as to be stretched in the
V-formation between the co-acting supporting
50 frames. The edges of the hides may thus be
fastened or tacked to one end of the frames and
tively short period of time. The action of the
apparatus illustrated inv FigurelO will thus be
substantially the same as that of the preferred 20
form, but by this type of structure I am enabled
to take advantage of the rocking apparatus which
is in conventional use at the present time.
It will be obvious from the foregoing descrip
tion that inthe use of my method and apparatus
for tanning hides as hereinbefore disclosed that
the ingredients of the tanning liquor are kept
constantly agitated, vso'that the tendency here
tofore experienced of the settling of the non
tannin ingredients in the form of a sludge is
eliminated. This is an important factor because
it is desirable to employ the insolubles or non
tannin ingredients for the purpose of "plumping
up” or loading the hides, and, in view of the
pressures which are obtainable in the operation 35
of the hide-supporting constructions disclosed,
these materials will be caused to penetrate into
the pores of the hides in a remarkably short pe
riod of time as compared with the absorption
action inthe usual conventional methods. Thus, 40
the non-tannins usually lost in the previous
methods will be availed by virtue of the construc
tion and operation of my invention.
While the speci?c details of construction have
been herein shown'and described, the invention‘ 45
is not con?ned thereto, as alterations may be
made without departing from the spirit thereof
as de?ned by the appended claims. <
Having thus described my invention, what ,I
claim as new as desire to secure by Letters Pat
ent is:
1. Hide tanning apparatus of the class de
scribed, comprising a rack and hide supporting
means disposed in said rack and having means
55 other end being elevated into the open slot at the - for ?xedly holding the sides of a hide thereon in
other side of the rack.‘ By sliding the bolt under such spaced position as to form a pressure pocket -'
the last mentioned end, the hide will then be for trapping the tanning liquor during tanning
stretched in the V-form between the two frames operation and forcing said liquor to penetrate
the hide.
and will readily be removable therefrom by a. re
2. Hide tanning apparatus as set forth in claim 60
60 versal of the operation just described.
The rack with its hides mounted therein is now 1, wherein the supporting means is provided with
introduced into a tanning vat 34 and suspended spacing members for rigidly holding hide sides
then a bar 29 is engaged with the central portion
in the manner shown, one‘ end of the bar being
then slipped into the socket on the rack and the
by means of its arms 35 from the end of a rock
ing bar 36 through the linkage 31. The bar or
65 beam 36 is pivotally mounted intermediate its
length on a standard or support 31’ mounted on
the top of the vats, there being in this case two
such vats, as shown clearly in Figure 10. The
other end of the beam, it will be understood, car
70 ries a second rack structure corresponding to that
just described in all essential characteristics.
Rocking movement is imparted to the beam by
any well known actuating means, that illustrated
in the drawings diagrammatically consisting of
75 the motor 38 for operating a worm shaft and
at an angle to each other so as to support the
hide therebetween with its side sections diverg
ing and forming a pressure pocket tending to 65
free the tanning liquors to penetrate the hide.
3. Hide tanning apparatus of the class de
scribed, comprising a plurality of hide supporting
frames, means for holding said frames in angular
relation to each other with an edge of one frame 70
contiguous to an edge of another, and means for
?xedly attaching the hide sides in open position
between the frames with the sides spaced from
each other to effect concentration of the pres
sure of liquor on the thicker portion of the hide.
4. Hide tanning apparatus‘ of itheclaiss de
scribed, comprising a pluralitylof hidesupports
ing structure toand fro to cause tanning liquor
in the vat to be pocketed by the hides under pres
constructed and arranged to ?xedly hold hide
sides spaced apart forming V.-shaped liquor .re
ceiving pockets between the sides, and means for
moving. said supports in the direction of facing
of thepockets to thereby‘trap the liquor in the
pockets under the pressure, of said moving means
to force the liquor to penetrate the‘hide.
5. Hide tanningrapparatus of the‘ class de
scribed, comprising a movable. rack adapted to
be disposed in a tanning vat, a plurality of sub
stantially rectangular'hide supporting members,
means for supporting the said- members in an
15 gular relation to each other in substantially zig
zag position within the rack, and means for ?xed
1y sustaining the hides relative to each pair of
hide supporting members so as to form pockets
in' which to-trapithe tanning liquor as the rack
is‘ moved therein.
6. In ‘tanning apparatus of the class de
scribed,‘ a‘ unitary hide support adapted to be
disposed in a tanning vat, comprising a substan
tially rectangular. rack structure consisting of
25 spaced open side and open end frame members,
rectangular hide stretching frames to which the
hides are ?xed in stretched V-form each having
hanging means at its ends, supporting means on
the side members of the rack for receiving the
30 frame hanging means aforesaid to dispose said
frames'tra'nsversely of the rack structure, and
means for moving the hides to force the liquor to
be concentrated between open sides of said hides.
7. In ' tanning apparatus of the class de
scribed; a movable hide ‘support adapted to be
disposed in a tanning vat comprising an elon
gated rack structure composed of spaced open
side and end members, a plurality of hide stretch
ing frames to .Which the hides are ?xed in
stretched position, and means for supporting
said frames between the side members of the
rack structure in transversely zig-zag formation
from end to .end- of the said structure so as to
form liquor trapping pockets between the frames
when the hides are disposed thereon.
8. In vtanning apparatus, the combination with
a tanning vat and a carriage movable to and fro
along the same ofv a unitary hide supporting
structure adapted'to be mounted on the carriage
sure in the back and forth strokes of the said
9. Tanning apparatus as set forth in claim 8
wherein thecarriage is mounted to move on tracks
on the top of the vat, and the supporting structure
is composed of a rectangular rack in which the
hide supporting frames are removably mounted
transversely of the rack.
10. Tanning apparatus of the class described,
comprising a supporting structure, hide support
ing frames mounted on said structure to which
the hides are adapted to be connected to rigidly
hold the sides of the hides. in open stretched V 15
shaped pocket position, means for moving the
structure to and fro and means intermediate
the frames for sustaining and holding the hides
in said stretched positions with the hides pockets
facing in the direction of movement of the struc
ture so as tov gather tanning liquor thereinto
during movement and prevent escape thereof
except through the hides.
l1. Tanning apparatus as set forth in claim
"10, combined with means for rocking the struc 2.5
tureup and down to force the tanning liquor to
be trapped between the hide sides.
12. Tanning apparatus of the class described,
comprising a rack member having a pair of spaced
side rails, one of said rails having rod receiving
openings therein and theother of said rails hav
ing open slots in which the endsrof the rods are
engaged, stretching rods arranged in said open
ings and slots, locking bolts for engaging the
ends of the rods which are received in the open
slots, and hide supporting frames disposed in the
rack in cooperating position, said frames being
spaced a‘ greater distance apart at one side than
at the other so as to provide a substantially V
13.'Inchide tanning apparatus of the class de
scribed, the combination of a tanning vat, hide
supporting means therein comprising a plurality
of frames, each consisting of means for stretch
ing'the hides and holding the sides thereof spaced
apart so as to form liquor trapping pockets of
the hides, and means for moving the frames in
the vat-in the direction of opening of the pockets
to force the liquor into the pockets under pres
andjcomposed'of a plurality of hide stretching
sure and thereby cause penetration of the hides a
frames, and means for holding said frames in a
by the liquor.
zig-zag formation .at an angle to each other,
means for hanging hides in ?xed stretched posi
tion aboutv the angle between each pair of frames
so as to form a series of liquor trapping pockets,
55 and means for moving the carriage and support
14. Hide tanning apparatus as set forth in
claim 13, wherein the frames and hides are ar
ranged alternately with the pocket openings fac
ing in opposite directions.
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