US3872695A - Wringer - Google Patents

Wringer Download PDF

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Publication number
US3872695A
US3872695A US404004A US40400473A US3872695A US 3872695 A US3872695 A US 3872695A US 404004 A US404004 A US 404004A US 40400473 A US40400473 A US 40400473A US 3872695 A US3872695 A US 3872695A
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US
United States
Prior art keywords
web
pressure member
conveyor belt
stationary
article
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US404004A
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English (en)
Inventor
Josef Busek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Publication of US3872695A publication Critical patent/US3872695A/en
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    • 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
    • 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
    • C14B1/44—Mechanical treatment of leather surfaces
    • 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
    • C14B2700/14—Processes or apparatus for setting-out, smoothing, ironing or polishing leather or hides
    • 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
    • C14B2700/28—Processes or apparatus for the mechanical treatment of hides or leather not provided for in groups C14B2700/01 - C14B2700/27

Definitions

  • the porous web allows efficient drainage of fluid and l 3 W970 the inflatable membrane allows the exertion of a 53 Q 3 constant pressure over the article even when the 3/1911 article has an uneven surface, and is thus particularly 6/1953 suitable for the drying of treated leather.
  • the invention relates to a device for wringing laminar articles, the device being particularly, though not exclusively, suited to the wringing of articles of irregularly varying cross-sectional thickness, such as leather.
  • each of these rollers may be covered with a layer of felt. It has been found however that in use this felt covering is subject to considerable wear and tear since the rollers must not only fulfil the task of wringing but also that of conveying the skins through the machine. More-over, operation of such machines requires considerable skill on the part of the operators in order to ensure that the leather skin is correctly fed into the machine and to prevent the leather from creasing.
  • a device for wringing a laminar article comprising an article treatment station, first and second pressure members disposed within said treatment station and having respective article-contacting surfaces; means for effecting approach and separation of said pressure members; inflatable membrane carried by said first pressure member and facing said second pressure member; and a web of porous flexible material interposed between said membrane and said second pressure member to form one of the article-contacting surfaces, the pores of said porous web communicating between its edges and said one article-contacting surface to enable liquid to drain away from said one article-contacting surface.
  • the invention can thus provide an apparatus with a considerably higher throughput than other noncalendering devices, without the quality of the end product or the efficiency of liquid extraction being impaired.
  • an intermediate layer is associated with each of the pressure surfaces. It has proved particularly advantageous to produce the intermediate layers of a fabric woven of monofilament fibers since such woven fabrics are non-absorbent and enable without any difficulty lateral drainage of the wrung out liquid.
  • the membrane may be pneumatically or hydraulically inflated.
  • Water is suitably utilized as hydraulic inflation medium and has no detrimental effect on the leather when leakages occur in the membranous system.
  • At least one run of at least one conveyor belt is guided between the pressure members.
  • the material of the conveyor belt should have substantially the same properties as the porous flexible webs so as not to hamper the lateral discharge of the extracted liquid. Alternatively it would even be possible to provide for the conveyor belt itself to serve as the porous flexible web.
  • FIG. 1 shows a cross-section of one embodiment of the device according to the invention.
  • FIG. 2 shows a cross-section analogous to FIG. 1 of a slightly modified embodiment of the invention.
  • the upper pressure surface is designated by the reference numeral 1, the lower one by the reference numeral .2.
  • the lower pressure surface 2 is in the form of a rubber membrane 4 spanning a support 3.
  • the support 3 is stationary and forms part of the frame of the device.
  • the gap between the membrane 4 and the support 3 communicates via a supply line 5 with a hydraulic accumulator (not shown).
  • the head of the device is designated by the numeral 6, and is stationary like the support 3.
  • a press ram 7 is longitudinally reciprocable in the direction of arrow 8 along guideways schematically indicated at 9 and 10.
  • the pressure surface 1 is covered by a porous flexible web 11 and the pressure surface 2 is covered by a similar web 12, both webs being laterally secured in the region of securing rails 13 and 14, respectively.
  • the webs 11, 12 are of a non-absorbent material, e.g. a synthetic 7 material, and more suitably consist of a woven fabric of monofilament fibers.
  • the cross-sectional thickness of the webs must be so dimensioned that an adequate draining towards the side is possible.
  • the upper web 11 is backed with a layer 15 of an absorbent material.
  • the absorbent layer 15 is elastically compressible, and may thus be formed of a sponge or foam material.
  • the ram 7 is lockable in final adjusted position. To this end it is provided with wedge-like sloping surfaces 16 on the reverse side. Two wedges 18 are adapted to be pushed into the gap between the sloping surfaces 16 and the oppositely located face 17 when the ram 7 is in its adjusted end position (not shown). The two wedges 18 are interconnected by a rod 19 which is guided for longitudinal displacement in the direction of the arrow 20 in the head 6.
  • the conveyor belt 21 is of a porous, flexible material having passages which enable lateral drainage of liquid.
  • the material of the conveyor belt is non-absorbent; the conveyor belt more particularly consists of a synthetic material, and in the exemplary embodiment it consists of a monofilament fiber fabric.
  • the upper pressure surface 1 of the ram 7 is heatable by means of a heating coil 25.
  • the pressure surface 1 of the ram 7 of FIG. 1 is provided with spaced air ducts 26 communicating with a compressed air line 26a.
  • these air ducts 26 may be connected with a suction line (not shown) for the purposes of aiding liquid removal by suction during the processing step. After the liquid removal operation air is blown through the same air ducts 26 so as to be able to detach any leather 27 which may adhere to the web 11.
  • the device operates in the following manner.
  • a leather skin 27 is positioned, optionally in folded form, exteriorly of the device on the conveyor belt 21, e.g. in the region of an end roller 28.
  • the skin is then introduced into the gap 24 between the ram 7 and the support 3 by moving the conveyor belt in the direction of arrow 29.
  • the ram 7 remains in its retracted position (FIG. 1).
  • the ram 7 is moved toward the support 3. This is done by means of a hydraulic drive 30 in the head 6.
  • the adjustment is executed such that the ram 7 thrusts the skin 27 against the as yet untensioned membrane 4 and holds it there, optionally under slight compression.
  • the ram 7 having been so positioned is then positively locked by shifting the rail 19 toward the left as seen in FIG. 1 (arrow direction 20).
  • the wedges 18 are thereby positioned between the slopes 16 on the reverse side of the ram 7 and the head 6 of the device.
  • Hydraulic liquid is now pumped in the direction of arrow 31 through the hydraulic line into the gap between the membrane 4 and the support 3.
  • the membrane is thereby slightly inflated.
  • the full pressure of the hydraulic liquid urges the membrane against the skin 27.
  • This pressure may amount to about atmospheres for example.
  • the flexibility of the rubber membrane 4 ensures that a pressure of equal magnitude is exerted on all points of the skin 27, although the skin is not of the same cross-sectional thickness throughout. By virtue of the pressure exerted by the membrane 4 on the skin 27 the skin is compressed.
  • the liquid contained in the skin issues at both surfaces from the skin 27.
  • the liquid enters the transverse passages created by the porosity of the conveyor belt 21 and the webs l1, l2 and flows out from the sides of upper run 22 of the conveyor belt 21 and the websll, 12.
  • the peripheral regions from which the liquid issues are situated outside the contour surfaces of the skin 27 so that the latter is not contacted by the liquid being squeezed out.
  • the cross-sectional thickness and the structure of the webs ll, 12 and of the conveyor belt 21 must be so arranged that lateral draining of the liquid issuing from the skin 27 during the wringing operation is ensured. This can additionally be assisted, for example, by a reduced pressure being produced in the region of the air ducts 26 so that the issuing, liquid is in addition being sucked off. It is also possible to blow compressed air through the ducts 26 during the wringing operation, so as to assist the lateral motion of the liquid squeezed from the webs ll, 12 and the conveyor belt 21.
  • the membrane 4 is deflated, the ram 7 is driven up, and compressed air is optionally blown through the ducts 26 to prevent the skin 27 from sticking to the web 11.
  • the conveyor belt is then moved on in the direction of arrow 29 so that the wrung-out skin can be removed from the belt at a station to the left, as viewed, for example, in FIG. 1.
  • a device for wringing flat articles of irregular thickness having a stationary lower pressure member; a movable upper pressure member oriented towards the stationary presssure member; means for moving the movable pressure member towards and away from the stationary pressure member; an expansible membrane secured to the stationary pressure member and having a face oriented towards the movable pressure member; means for expanding the membrane by liquid pressure for pressing the membrane face against the flat article situated between the two pressure members; a conveyor belt extending between the pressure members for positioning the flat article therebetween, the conveyor belt being structured to allow liquid pressed from the article to flow parallel to the belt faces; the improvement comprising: a first web affixed to said stationary pressure member and extending over said membrane and said stationary pressure member, said first web having a web face oriented towards said conveyor belt; and a second web affixed to and extending over said movable pressure member, said second web having a web face oriented towards said conveyor belt; said first and second webs being of a porous, essentially nonabsorbent structure for providing a drainage of the liquid

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)
US404004A 1972-10-09 1973-10-05 Wringer Expired - Lifetime US3872695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2249369A DE2249369C3 (de) 1972-10-09 1972-10-09 Presse zum Entwässern von Flächengebilden, wie Lederhäuten

Publications (1)

Publication Number Publication Date
US3872695A true US3872695A (en) 1975-03-25

Family

ID=5858523

Family Applications (1)

Application Number Title Priority Date Filing Date
US404004A Expired - Lifetime US3872695A (en) 1972-10-09 1973-10-05 Wringer

Country Status (6)

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US (1) US3872695A (US07655688-20100202-C00109.png)
CS (1) CS171292B2 (US07655688-20100202-C00109.png)
DE (1) DE2249369C3 (US07655688-20100202-C00109.png)
FR (1) FR2202160B1 (US07655688-20100202-C00109.png)
GB (1) GB1444246A (US07655688-20100202-C00109.png)
IT (1) IT995686B (US07655688-20100202-C00109.png)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029201A (en) * 1975-10-02 1977-06-14 H. H. Robertson Company Conveyor apparatus
US4086793A (en) * 1976-04-07 1978-05-02 Usm Corporation Device for moistening and conditioning leather and the like
US4127487A (en) * 1976-10-05 1978-11-28 Ciba-Geigy Corporation Filtration system
US4296614A (en) * 1977-08-27 1981-10-27 Usm Corporation Leather press
US4528717A (en) * 1983-05-05 1985-07-16 Floordress-Reinigungsgerate GmbH Flat press
US4715923A (en) * 1985-12-26 1987-12-29 The Boeing Company Apparatus for consolidating composite materials
US4859267A (en) * 1985-12-26 1989-08-22 The Boeing Company Method for consolidating composite materials
US4950752A (en) * 1987-08-19 1990-08-21 Carratech, Inc. Expression method
US5000017A (en) * 1987-01-28 1991-03-19 Johs. Krause Gmbh Maschinenfabrik Apparatus for treating skins or hides in wet processes
US5152213A (en) * 1991-02-22 1992-10-06 Hitachi Ltd. Goritsu Mfg Co. Hydroextractor
US5231919A (en) * 1992-10-16 1993-08-03 Lawrence Equipment, Inc. Conveyor belt for dough ball pressing apparatus
US5291759A (en) * 1988-09-29 1994-03-08 Jiri Dokoupil Process and equipment for stretching of leather
US6167637B1 (en) 1998-03-03 2001-01-02 Yuuji Nagase Dehydrating method and hydroextractor
US20060180440A1 (en) * 2005-02-11 2006-08-17 Lewis William C Conveyor belts with thin film sensor-activating coating
US20080010767A1 (en) * 2003-11-19 2008-01-17 Grimes David B Cleaning apparatus
US20120307013A1 (en) * 2010-02-05 2012-12-06 Valka Ehf Food processing apparatus for detecting and cutting tough tissues from food items
US20130025151A1 (en) * 2011-07-26 2013-01-31 Pellerin Milnor Corporation Laundry press apparatus and method
CN104514139A (zh) * 2014-12-24 2015-04-15 江苏海狮机械集团有限公司 用于运送湿布草的进料输送装置
CN104562505A (zh) * 2015-01-23 2015-04-29 绍兴国周纺织新材料有限公司 一种轧水机
US10822837B2 (en) 2017-09-03 2020-11-03 Dan Raz Ltd. Obliquely-engaging locking mechanism
US11072833B2 (en) * 2018-11-08 2021-07-27 Korona Corporation Wet leather stretching device
CN113279166A (zh) * 2021-03-16 2021-08-20 袁婷 一种涤纶纤维制造装置
US11259531B2 (en) 2015-03-02 2022-03-01 Valka Ehf Apparatus for processing and grading food articles and related methods
US11344036B2 (en) 2015-03-02 2022-05-31 Valka Ehf Apparatus for processing and grading food articles and related methods
US11357237B2 (en) 2015-03-02 2022-06-14 Valka Ehf Apparatus for processing and grading food articles and related methods
US11376167B2 (en) * 2015-08-12 2022-07-05 Sumitomo Seika Chemicals Co., Ltd. Apparatus for manufacturing absorbent body
US11897703B2 (en) 2019-05-07 2024-02-13 Valka Ehf Conveyor system and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2757257C3 (de) * 1977-12-22 1981-11-12 Louis Schweizer Gmbh & Co Kg Lederfabrik, 7157 Murrhardt Abwelkpresse für Leder, Pelze u.dgl.
CN108425217B (zh) * 2018-05-21 2023-07-14 芜湖恒安钢结构有限公司 船舶帆布拧干用离合控制设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1332963A (en) * 1917-09-27 1920-03-09 New York Belting & Packing Com Press for molding plastic articles
US1533115A (en) * 1921-09-24 1925-04-14 Pfister & Vogel Leather Compan Leather press
US2233495A (en) * 1938-10-10 1941-03-04 Joseph J Stehling Leather wringing machine
US2642782A (en) * 1948-04-10 1953-06-23 Chapman Forest Utilization Inc Fiberboard forming press with loader and unloader
US3160553A (en) * 1962-07-30 1964-12-08 Beloit Corp Suction roll scavenging means
US3187409A (en) * 1963-05-07 1965-06-08 Ames American Co Method of securing resilient material covers to a roll

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1225625A (fr) * 1957-04-30 1960-07-01 J W Zanders Dispositif pour le pressage de carton à la cuve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1332963A (en) * 1917-09-27 1920-03-09 New York Belting & Packing Com Press for molding plastic articles
US1533115A (en) * 1921-09-24 1925-04-14 Pfister & Vogel Leather Compan Leather press
US2233495A (en) * 1938-10-10 1941-03-04 Joseph J Stehling Leather wringing machine
US2642782A (en) * 1948-04-10 1953-06-23 Chapman Forest Utilization Inc Fiberboard forming press with loader and unloader
US3160553A (en) * 1962-07-30 1964-12-08 Beloit Corp Suction roll scavenging means
US3187409A (en) * 1963-05-07 1965-06-08 Ames American Co Method of securing resilient material covers to a roll

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029201A (en) * 1975-10-02 1977-06-14 H. H. Robertson Company Conveyor apparatus
US4086793A (en) * 1976-04-07 1978-05-02 Usm Corporation Device for moistening and conditioning leather and the like
US4127487A (en) * 1976-10-05 1978-11-28 Ciba-Geigy Corporation Filtration system
US4296614A (en) * 1977-08-27 1981-10-27 Usm Corporation Leather press
US4528717A (en) * 1983-05-05 1985-07-16 Floordress-Reinigungsgerate GmbH Flat press
US4859267A (en) * 1985-12-26 1989-08-22 The Boeing Company Method for consolidating composite materials
US4715923A (en) * 1985-12-26 1987-12-29 The Boeing Company Apparatus for consolidating composite materials
US5000017A (en) * 1987-01-28 1991-03-19 Johs. Krause Gmbh Maschinenfabrik Apparatus for treating skins or hides in wet processes
US4950752A (en) * 1987-08-19 1990-08-21 Carratech, Inc. Expression method
US5291759A (en) * 1988-09-29 1994-03-08 Jiri Dokoupil Process and equipment for stretching of leather
US5152213A (en) * 1991-02-22 1992-10-06 Hitachi Ltd. Goritsu Mfg Co. Hydroextractor
US5231919A (en) * 1992-10-16 1993-08-03 Lawrence Equipment, Inc. Conveyor belt for dough ball pressing apparatus
US6167637B1 (en) 1998-03-03 2001-01-02 Yuuji Nagase Dehydrating method and hydroextractor
US20080010767A1 (en) * 2003-11-19 2008-01-17 Grimes David B Cleaning apparatus
US8240063B2 (en) * 2003-11-19 2012-08-14 David Brian Grimes Cleaning wringing and drying apparatus
US8025144B2 (en) 2005-02-11 2011-09-27 Advanced Flexible Composites, Inc. Conveyor belts with thin film sensor-activating coating
US20060180440A1 (en) * 2005-02-11 2006-08-17 Lewis William C Conveyor belts with thin film sensor-activating coating
US9095147B2 (en) * 2010-02-05 2015-08-04 Valka Ehf Food processing apparatus for detecting and cutting tough tissues from food items
US20120307013A1 (en) * 2010-02-05 2012-12-06 Valka Ehf Food processing apparatus for detecting and cutting tough tissues from food items
US9920990B2 (en) * 2011-07-26 2018-03-20 Pellerin Milnor Corporation Laundry press apparatus and method
US20130025151A1 (en) * 2011-07-26 2013-01-31 Pellerin Milnor Corporation Laundry press apparatus and method
CN104514139A (zh) * 2014-12-24 2015-04-15 江苏海狮机械集团有限公司 用于运送湿布草的进料输送装置
CN104562505A (zh) * 2015-01-23 2015-04-29 绍兴国周纺织新材料有限公司 一种轧水机
US11259531B2 (en) 2015-03-02 2022-03-01 Valka Ehf Apparatus for processing and grading food articles and related methods
US11344036B2 (en) 2015-03-02 2022-05-31 Valka Ehf Apparatus for processing and grading food articles and related methods
US11357237B2 (en) 2015-03-02 2022-06-14 Valka Ehf Apparatus for processing and grading food articles and related methods
US11376167B2 (en) * 2015-08-12 2022-07-05 Sumitomo Seika Chemicals Co., Ltd. Apparatus for manufacturing absorbent body
US10822837B2 (en) 2017-09-03 2020-11-03 Dan Raz Ltd. Obliquely-engaging locking mechanism
US11072833B2 (en) * 2018-11-08 2021-07-27 Korona Corporation Wet leather stretching device
US11897703B2 (en) 2019-05-07 2024-02-13 Valka Ehf Conveyor system and method
CN113279166A (zh) * 2021-03-16 2021-08-20 袁婷 一种涤纶纤维制造装置

Also Published As

Publication number Publication date
FR2202160B1 (US07655688-20100202-C00109.png) 1976-10-01
DE2249369A1 (de) 1974-05-02
CS171292B2 (US07655688-20100202-C00109.png) 1976-10-29
DE2249369C3 (de) 1979-01-18
FR2202160A1 (US07655688-20100202-C00109.png) 1974-05-03
IT995686B (it) 1975-11-20
DE2249369B2 (de) 1977-06-16
GB1444246A (en) 1976-07-28

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