US3422642A - Apparatus for treating permeable sheets such as animal skins,leather and the like - Google Patents

Apparatus for treating permeable sheets such as animal skins,leather and the like Download PDF

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Publication number
US3422642A
US3422642A US559906A US3422642DA US3422642A US 3422642 A US3422642 A US 3422642A US 559906 A US559906 A US 559906A US 3422642D A US3422642D A US 3422642DA US 3422642 A US3422642 A US 3422642A
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United States
Prior art keywords
cell
treating
treated
frame
sheet
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Expired - Lifetime
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US559906A
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English (en)
Inventor
Irenee Jullien
Claude Pillard
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Centre Technique Cuir Chaussure Maroquinerie
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Centre Technique Cuir Chaussure Maroquinerie
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    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/02—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B2700/00—Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
    • C14B2700/01—Machines or devices for treating skins, hides or leather in general, e.g. fleshing, unhairing, samming, stretching-out, setting-out

Definitions

  • This invention relates to apparatus for treating hides and the like.
  • a typical example of the Ifaster method is one using a porosimeter constituted by two cells, one of which is connected with a vacuum circuit and the other with a circuit carrying the treating liquid.
  • the permeable sheet tto be treated is inserted between the two cells which are urged against each other so as to form a fluid-tight connection with the sheet undergoing treatment.
  • the liquid fills the fluid-tight chamber extending between one said cell and the sheet to be treated. Vacuum is then produced in the other cell, so that the liquid passes through the sheet to be treated.
  • U.S. Patent 2,702,229 discloses a method and means.
  • a yielding impervious diaphragm covers entirely the treating frame over which is previously laid the sheet to be treated, togethei with spacing means which allow the treating uid to cover the sheet to be treated.
  • a differential pressure exerted -on the frame urges said diaphragm onto the parts of said frame which are not covered by the sheet to be treated.
  • a poor adjustment produces either a contact between the diaphragm and the material to be treated, or else leaks of liquid consequent to a release of the diaphragm from the edges lof the material to be treated. In both cases, a commercial embodiment is not really practical by reason of a large expenditure of treating liquid.
  • the diaphragm is provided with an opening inits center, while a spacing Patented Jan. 21, 1969 ICC member holds the diaphragm above the material to be treated ⁇ at the moment of the introduction of the liquid, the diaphragm -being shifted away from the leather or the like material under the action of liquid pressure.
  • Our invention has as an object the avoidance of all these drawbacks and to this end it provides an improved apparatus for treating permeable sheets such as animal skins, leather and the like.
  • the apparatus includes a lower cell, preferably in the shape of a funnel, closed in the plane of its upper opening by a porous compound body carried within a rigid frame stretched across or laid over said body and acting as a support for the material to be treated and an upper cell including a second rigid ⁇ frame identical with the frame of the lower cell,.a rigid plate of a circular or polygonal outline extending above said second -frame and an elastic diaphragm insuring a uidtight connection between said secfond frame and said plate, while a pipe passing centrally through said plate connects the upper cell on the one hand with external atmbosphere and on the other hand with a container for the treating fluid, whereas the lower cell is provide-d at its 'bottom with a pipe connecting it with a source of vacuum.
  • the upper cell is capped by a rigid fluid-tight bell-shaped member the inside of which is connected together with the pipe connecting the defonmable upper celll with the container of treating fluid, with a supply of gas under pressure the operation of which may in fact be cut out by opening a gate connecting said supply with the outer atmosphere.
  • FIG. l is a vertical axial cross-sectional and diagrammatical View of a first embodiment of the invention'.
  • FIGS. 2 and 3 are vertical axial cross-sectional views similar to FIG. 1 showing two modifications of the first embodiment.
  • FIG. l is illustrated an apparatus incorporating our invention and comprising a lower funnel-shaped cell 2 which may, in fact, have any other shape insuring a sufiicient rigidity when subjected to a vacuum.
  • a pipe 3 adapted to connect said cell with a source of vacuum which is not illustrated;
  • the upper edge of the lower cell 2 is reinforced by a frame 4Vcarrying a perforated plate 5 extending in a plane defining the upper opening of the cell 2, said plate being made of a material which is suliiciently rigid for it to resist the action of the vacuum.
  • a porous compound body 6 constituted, for instance, by a plate of wool felt or like porous material.
  • the upper deformable cell 7 includes a frame 8 identical with the frame ⁇ 4 of the lower cell 2 and a rigid plate 9 rigidly secured to the frame 8 by any suitable means which are not illustrated; the plate 9 and frame 8 are furthermore iiuidtightly connected by an elastic frustoconical diaphragm 11.
  • a pipe 12 connecting the upper cell 7 through the agency of a gate 13 with a container 14 carrying the treating uid.
  • a shunt pipe 15 branching from the pipe 12 connects the inside of the upper cell 7 with the outer atmosphere.
  • the two cells 2 and 7 being in spaced relation with reference to each other, the sheet 16 of pervious material to be treated is laid over the porous body 6. This being done, the frames 4 and 8 are brought together and secured to each other in superposed fluid-tight relationship.
  • the lower cell 2 is then connected operatively with the source of vacuum and since the amount of air sucked out 'by the pipe 3 is larger than that of the air entering the cell 7 through the pipes 1S and 12, the elastic diaphragm l11 is urged against the uncovered section of the porous body 6 and defines thus clearly the outline of the sheet to be treated, as illustrated in interrupted lines in FIG. 1.
  • the treating liuid is then introduced into the upper cell 7 by opening the gate 13, which allows adjusting the output; the fluid thus introduced into the cell 7 is sucked through the sheet 16 as a consequence of the difference in pressure between the two cells.
  • FIG. 2 illustrates a modified embodiment of said apparatus wherein the deformable cell 7 is capped by a liuid-tight bell-shaped member 17 made of rigid material.
  • a pipe 18 connects, through the agency of pressure-reducing means 19 the inside of said bell-shaped member 17 with a supply of compressed gas, which is not illustrated.
  • the shunt pipe 15 on the pipe 12 is also connected through said pipe 18 with said supply of compressed gas.
  • a gate 21 provides means for connecting said pipe 18 with the outer atmosphere.
  • the sheet to be treated 16 being positioned over the porous body 6 and the frames 4 and 8 being secured to each other, the lower cell 2 is connected Iwith the source of vacuum.
  • the elastic diaphragm 11 engages in contacting relationship as in the case illustrated in FIG. 1 the porous compound body 6 throughout its section surrounding the sheet 16 to be treated while the gate 13 is closed and the valve 21 is open.
  • the gate 13 is then opened and the treating iiuid enters the deformable cell 7 so as to cover the sheet 16. This being done, the gate 13 is closed and after adjustment of the pressure-reducing means 19 to the desired pressure, the gate 21 is closed.
  • the pressure of the compressed gas is then exerted both inside the 'bellshaped member 17 and inside the cell 7 which has no action on the diaphragm 11, but in association with the action of vacuum increases the speed of passage of the treating fluid through the sheet -16 to be treated.
  • FIG. 3 illustrates partly a further embodiment wherein it is possible to adjust the level at which the plate 9 lies above the frame 8 and consequently to modify the inner volume of the deformable upper cell 7.
  • the pipe 12 carries an outer thread 12a engaged by a nut 22 carried by the uid-tight bell-shaped member 17.
  • Said nut 22 is axially and fluid-tightly connected with the upper section of the bell-shaped member 17 inside which it may rotate freely, while the pipe 12 is adapted to move vertically and is prevented from pivoting around its axis by any suitable means.
  • An apparatus for treating permeable sheets comprising a lower cell having an open upper end and an upwardly flaring shape and including an upper edge bordering the open upper end and a first rigid frame extending along the upper edge, a porous body on said frame and extending across the entire opening in the lower cell, an upper cell including a second rigid frame corresponding ⁇ with said first frame and adapted to be secured in Huid-tight relation with the latter, a rigid plate positioned above said second frame and having a periphery which lies in projection within the outline of said second frame, a substantially frustum-shaped elastic diaphragm interconnecting said second frame and rigid plate, 1
  • said apparatus further comprising a rigid fluid-tight bell-shaped member rigidly secured over, and in fluid-tight relation to, the frame lof the upper cell, a supply of compressed gas, means to adjust the pressure of said gas, a pipe provided with external threads and connecting said supply of compressed gas with the upper cell and to the space between the bellshaped member and said upper cell, means for connecting the last said pipe with the outside atmosphere, and a nut fitted rotatably in the bell-shaped member and engaging the threads on said pipe and adapted to be rotated relative to the last said pi-pe to cause a relative vertical shifting of the plate of the upper cell with reference to the bellshaped member and consequently to the frame of said upper cell.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US559906A 1965-07-01 1966-06-23 Apparatus for treating permeable sheets such as animal skins,leather and the like Expired - Lifetime US3422642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR46178A FR1488976A (fr) 1965-07-01 1965-07-01 Appareil pour le traitement de feuilles perméables tels que les peaux animales ou autres

Publications (1)

Publication Number Publication Date
US3422642A true US3422642A (en) 1969-01-21

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US559906A Expired - Lifetime US3422642A (en) 1965-07-01 1966-06-23 Apparatus for treating permeable sheets such as animal skins,leather and the like

Country Status (5)

Country Link
US (1) US3422642A (fr)
CH (1) CH446598A (fr)
FR (1) FR1488976A (fr)
GB (1) GB1126800A (fr)
NL (1) NL6609158A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3702478A1 (de) * 1987-01-28 1988-08-11 Johs Krause Gmbh Maschinenfabr Vorrichtung zum behandeln von haeuten in nassprozessen
US5087358A (en) * 1989-03-20 1992-02-11 Donato Massignani Filtering machine for fibrous substances having revolving cone-shaded filters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363771A (en) * 1918-04-06 1920-12-28 Gilardini Felice Process and apparatus for the instantaneous tannage of hides and skins
US2648079A (en) * 1952-10-11 1953-08-11 Secotan Inc Apparatus for molding skins
US2702229A (en) * 1951-06-27 1955-02-15 Secotan Inc Process and apparatus for fluid treatment of pervious sheet materials
US2749737A (en) * 1954-10-14 1956-06-12 Secotan Inc Apparatus for treating permeable sheets with fluids

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363771A (en) * 1918-04-06 1920-12-28 Gilardini Felice Process and apparatus for the instantaneous tannage of hides and skins
US2702229A (en) * 1951-06-27 1955-02-15 Secotan Inc Process and apparatus for fluid treatment of pervious sheet materials
US2648079A (en) * 1952-10-11 1953-08-11 Secotan Inc Apparatus for molding skins
US2749737A (en) * 1954-10-14 1956-06-12 Secotan Inc Apparatus for treating permeable sheets with fluids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3702478A1 (de) * 1987-01-28 1988-08-11 Johs Krause Gmbh Maschinenfabr Vorrichtung zum behandeln von haeuten in nassprozessen
US5087358A (en) * 1989-03-20 1992-02-11 Donato Massignani Filtering machine for fibrous substances having revolving cone-shaded filters

Also Published As

Publication number Publication date
FR1488976A (fr) 1967-07-21
CH446598A (fr) 1967-11-15
GB1126800A (en) 1968-09-11
NL6609158A (fr) 1967-01-02

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