US3791077A - Method and apparatus for stretching strip of sheet material on rigid supports - Google Patents

Method and apparatus for stretching strip of sheet material on rigid supports Download PDF

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Publication number
US3791077A
US3791077A US00218081A US3791077DA US3791077A US 3791077 A US3791077 A US 3791077A US 00218081 A US00218081 A US 00218081A US 3791077D A US3791077D A US 3791077DA US 3791077 A US3791077 A US 3791077A
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US
United States
Prior art keywords
sheet
rigid supports
rigid
tubular element
pair
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
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US00218081A
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English (en)
Inventor
F Ventimiglia
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Individual
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Individual
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Publication of US3791077A publication Critical patent/US3791077A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B1/3205—Structures with a longitudinal horizontal axis, e.g. cylindrical or prismatic structures
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1407—Greenhouses of flexible synthetic material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
    • E04H15/64—Tent or canopy cover fastenings
    • E04H15/642—Tent or canopy cover fastenings with covers held by elongated fixing members locking in longitudinal recesses of a frame
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B2001/3235—Arched structures; Vaulted structures; Folded structures having a grid frame
    • E04B2001/3241—Frame connection details
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B2001/3235—Arched structures; Vaulted structures; Folded structures having a grid frame
    • E04B2001/3252—Covering details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S135/00—Tent, canopy, umbrella, or cane
    • Y10S135/905—Method of erecting shelter

Definitions

  • This invention relates to a method for stretching strips of flexible sheet material on rigid structures.
  • a further disadvantage in known tensioning systems for flexible material strips resides in that such a tensioning needs rather delicate, hard-working and time-waste operations to be carried out.
  • the main object of the present invention is to provide a method by which strips of flexible sheet material can be fully evenly stretched on rigid structures, particularly for greenhouse covering.
  • Another object of the invention is to provide a stretching method of the above character, according to which method said strips can be given a desired amount of readily adjustable controllable stretching.
  • a still further object of the invention is to provide a method by which the stretching of flexible sheet material strips on rigid structures can be extremely simply and readily carried out without any risk of causing breakages in the strips.
  • a strip of flexible sheet material is laid on a pair of rigid supports arranged close and substantially parallel to each other, above said sheet material and at said rigid supports an air-tight deformable tubular element is arranged and extends along said supports, and above the tubular element there is positioned a substantially inextensible elongate element, of which the free ends are restrained to fixed locations, said tubular element being provided with at least one valve for introducing a pressure fluid therein.
  • FIG. 1 is a perspective view showing three metal lattices, on which a flexible material strip is laid and stretched;
  • FIG. 2 is an enlarged view showing a detail, as taken along the line llll of the structure in FIG. 1;
  • FIGS. 3 and 4 are enlarged views taken along the line lV-IV of the structure in FIG. 1, showing the structure prior to stretching the flexible material strip and after the stretching thereof, respectively.
  • a strip of flexible sheet material comprising for-example a thin plastic material sheet 3, the ends of which are secured by any known means on the ribs 1 and 2.
  • a further metal rib is positioned and comprises a curved section 4, while a pair of metal supports 6 and 7 are fast therewith by means of a plurality of forks 5, said supports 6 and 7 being close and parallel to each other.
  • a shielding strap 8 (FIGS. 3 and 4) also made of flexible material, such as plastic material, is laid above said supports 6 and 7.
  • the flexible sheet 3 the free ends of which are restrained on ribs 1 and 2, bears and extends on this shielding strap.
  • a valve of any known type is mounted, which valve is not shown in the drawing for the sake of simplicity since its description is not essential for understanding the present invention, and through which a pressure fluid can be introduced into the tubular element: preferably this fluid is air, the pressure of which can be at a very low rate, such as between 0.2 and 1.0 atmosphere above ambient atmosphere.
  • the free ends of the metal strap 10 are secured to the two lower ends of the underlying metal rib, a bracket 11 being fast therewith and having a hole through which a screw 12 carrying a bolt 13 will extend, this screw being fast with a cradle 14 carrying a rigid rod 15, about which each end of the metal strap 10 is wrapped and secured.
  • the cross-section for the structure at the section IVIV will assume the configuration as shown in FIG. 3, where the strap 10 is given only a slight tension as provided by rotating the bolts 13 on screws 12 by means of any wrench.
  • said strap 10 could be made of a cloth or fabric strap, or of any other inextensible material, and that the rigid structure comprising said supports 6 and 7 could be of a configuration other than that shown, comprising for example two separate rigid structures juxtaposed to each other. Then, where the strip of flexible sheet material to be stretched should be of a flat configuration, it is apparent that also the rigid supports 6 and 7 have to assume a straight configuration, and in this case said strap 10 could comprise a rigid rod which is also straight and overlies said two supports.
  • a not negligible advantage of the present system resides in that at any time the pressure can be increased within the tubular element 9 in order to increase the tension in the flexible sheet strip 3, particularly to recover any elongations which often arise after laying.
  • a method for stretching a flexible sheet of material fastened to rigid structures and spanning a space between said rigid structure comprising the steps of:
  • An apparatus for stretching a flexible sheet of material fastened to rigid structures and spanning a space between said rigid structures comprising:
  • an air-tight, deformable tubular element having a valve for introducing or expelling a fluid into said tubular element so that it can be expanded to a tubular configuration or to a collapsed configuration, said tubular element being adapted to position on the side of said sheet opposite said pair of rigid supports so as to be parallel to and within at least a portion of the space bridging said pair of rigid supports;
  • a substantially inextensible elongated element located on the side of said tubular element opposite the side adapted to be positioned against said sheet, the ends of said elongated element having restraining means connected to said rigid supports and holding said elongated element in position against said tubular element.
  • the apparatus as claimed in claim 4 including a flexible shielding strap located parallel to said pair of rigid supports and adapted for positioning between said sheet and said rigid supports.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Tents Or Canopies (AREA)
US00218081A 1971-01-19 1972-01-17 Method and apparatus for stretching strip of sheet material on rigid supports Expired - Lifetime US3791077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1950871 1971-01-19

Publications (1)

Publication Number Publication Date
US3791077A true US3791077A (en) 1974-02-12

Family

ID=11158611

Family Applications (1)

Application Number Title Priority Date Filing Date
US00218081A Expired - Lifetime US3791077A (en) 1971-01-19 1972-01-17 Method and apparatus for stretching strip of sheet material on rigid supports

Country Status (6)

Country Link
US (1) US3791077A (enrdf_load_stackoverflow)
BE (1) BE778237A (enrdf_load_stackoverflow)
DE (1) DE2201845A1 (enrdf_load_stackoverflow)
FR (1) FR2122507B1 (enrdf_load_stackoverflow)
GB (1) GB1329673A (enrdf_load_stackoverflow)
NL (1) NL7200738A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398376A (en) * 1976-05-04 1983-08-16 Air-Tech Industries, Inc. Fabric panel unit
US4583331A (en) * 1983-12-27 1986-04-22 Clamshell Partners Ltd. Frame supported structure with tensioned fabric panels
US6158181A (en) * 1997-12-19 2000-12-12 Musgrave; Paul Barnaby Roofing structures
FR2849883A1 (fr) * 2003-01-14 2004-07-16 Ferrari S Tissage & Enduct Sa Element destine a etre rapporte sur la lisiere d'une toile en vue de son accrochage sur un cadre rigide, et toile equipee d'au moins un tel element
US20140007536A1 (en) * 2010-11-24 2014-01-09 Vector Foiltec Gmbh Building Envelope Element Comprising a Thermal Insulating Element

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5482406U (enrdf_load_stackoverflow) * 1977-11-22 1979-06-11
FR2537109A1 (fr) * 1982-12-02 1984-06-08 Bernardy Claude Dispositif de tension et de tenue de feuilles souples a l'aide d'un boyau gonflable pour vitrages et miroirs
NL1001501C2 (nl) * 1995-10-26 1997-05-02 C & J Bosman B V Draagconstructie voor een foliedek.
MX2012011572A (es) * 2012-10-05 2013-02-07 Luis Hector Alberto Martinez Ruanova Unidad colgante vertical doble en forma de bolsas para cultivo hidroponico de plantas, panel de unidades colgantes verticales dobles en forma de bolsas y estructura para invernadero.
CN111557192B (zh) * 2020-06-12 2022-02-08 中农智能装备有限公司 一种新型工业大麻种植温室

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US701126A (en) * 1902-03-01 1902-05-27 Fritz Bahrmann Tent.
US2827138A (en) * 1954-03-01 1958-03-18 Virginia Burdick Roy Portable building construction
GB910194A (en) * 1959-01-20 1962-11-14 Eli Sofus Anderson Frame structure with a foil stretched thereon
US3103083A (en) * 1958-06-19 1963-09-10 Seeger Fritz Silo closure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US701126A (en) * 1902-03-01 1902-05-27 Fritz Bahrmann Tent.
US2827138A (en) * 1954-03-01 1958-03-18 Virginia Burdick Roy Portable building construction
US3103083A (en) * 1958-06-19 1963-09-10 Seeger Fritz Silo closure
GB910194A (en) * 1959-01-20 1962-11-14 Eli Sofus Anderson Frame structure with a foil stretched thereon

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398376A (en) * 1976-05-04 1983-08-16 Air-Tech Industries, Inc. Fabric panel unit
US4583331A (en) * 1983-12-27 1986-04-22 Clamshell Partners Ltd. Frame supported structure with tensioned fabric panels
US6158181A (en) * 1997-12-19 2000-12-12 Musgrave; Paul Barnaby Roofing structures
FR2849883A1 (fr) * 2003-01-14 2004-07-16 Ferrari S Tissage & Enduct Sa Element destine a etre rapporte sur la lisiere d'une toile en vue de son accrochage sur un cadre rigide, et toile equipee d'au moins un tel element
EP1439272A1 (fr) * 2003-01-14 2004-07-21 Tissage et Enduction Serge Ferrari SA Elément destiné à être rapporté sur la lisière d'une toile en vue de son accrochage sur un cadre rigide, et toile équipée d'au moins un tel élément
US20140007536A1 (en) * 2010-11-24 2014-01-09 Vector Foiltec Gmbh Building Envelope Element Comprising a Thermal Insulating Element
US10047522B2 (en) * 2010-11-24 2018-08-14 Vector Foiltec Gmbh Building envelope element comprising a thermal insulating element

Also Published As

Publication number Publication date
FR2122507A1 (enrdf_load_stackoverflow) 1972-09-01
DE2201845A1 (de) 1972-08-03
NL7200738A (enrdf_load_stackoverflow) 1972-07-21
FR2122507B1 (enrdf_load_stackoverflow) 1975-03-21
GB1329673A (en) 1973-09-12
BE778237A (fr) 1972-05-16

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