US3450186A - Reelable beam - Google Patents

Reelable beam Download PDF

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Publication number
US3450186A
US3450186A US566384A US3450186DA US3450186A US 3450186 A US3450186 A US 3450186A US 566384 A US566384 A US 566384A US 3450186D A US3450186D A US 3450186DA US 3450186 A US3450186 A US 3450186A
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US
United States
Prior art keywords
elements
series
reelable
assembly head
greenhouse
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Expired - Lifetime
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US566384A
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English (en)
Inventor
Angelo Caffa
Letizia Caffa
Carla Caffa
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Individual
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Individual
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Publication date
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    • 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
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
    • E04H12/185—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic with identical elements
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/005—Girders or columns that are rollable, collapsible or otherwise adjustable in length or height
    • 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

Definitions

  • the present invention concerns a reelable beam of controlled variable length, made up of articulated elements in two parallel series, the elements of the upper series being inter-linked with those of the lower series on an assembly head in the manner of a zip fastener in which the slider is in fact at rest, being the said support, while the toothing, instead of being at rest, is movable.
  • the beam is made up of and can be disassembled into two elastic foldable parts capable of being rolled up to a minimum size.
  • the individual elements of each foldable part can be locked together and unlocked, and the upper series of elements is provided with a foldable cover which may be formed of a sheet of flexible material, of slats, or of links like a roll-down shutter or blind.
  • Several reelable beams may be combined to form carrying structures which are secured to the foldable cover to form adjustable roofs for greenhouses, skylights, portable shelters, porches and produce reinforced shutters, hatches, half-beams for closing or supporting nets, and the like.
  • FIGS. 1 and 2 show, in transverse section and as seen from above, an assembly head with a part of a reelable beam according to the invention, on a reduced scale.
  • FIG. 3 is a partial section, in full scale, taken along the line A-A f FIG. l.
  • FIG. 4 is a partial section, in full scale, taken along the line B--B of FIG. 2.
  • FIG. 5 is also a partial section, in full scale, of the elements, taken along the line C-C of FIG. 2.
  • FIG. 6 shows a reelable beam according to the invention, drawn schematically at the points of juncture of the various elements for the purpose of providing a better understanding thereof.
  • FIG. 7 shows a modification of the system of closure of the various elements.
  • FIG. 8 shows schematically, partially in section and in perspective, a greenhouse with two swingable roof leaves shown in the lowered position and in which a indicates embedded tubular uprights, b telescopically extending uprights, while c indicates a horizontal tubular section iron carried by the uprights b and carrying the half-beams.
  • FIG. 9 shows, schematically, two compartments of a greenhouse, each made up of four standard parts which are linked to each other and attached to five uprights, the reelable beams being located in the positions indicated in dash lines.
  • a compartment D is shown with the cover unfolded at the working heights and at a different inclination, while another compartment E, like the former, is shown with the cover rolled up.
  • the greenhouse is composed of a number of equal parts each provfided with an assemby head as will be described hereina ter.
  • an assembly head generally indicated by 1 is attached to a horizontal tube 2 and adapted to be shifted vertically and locked by means of a threaded stop pin 3.
  • Mounted in the assembly head 1 are two gears 4 which engage in equidistant notches in a flexible metal strip 5 which works in the manner of a rack, said gears being actuated by an intermediate gear Wheel 6 which is splined to and driven by a shaft 7.
  • the length of the shaft 7 corresponds to that of the greenhouse compartment to be covered so that the transmission of the move-ment to the series of gears can be effected simultaneously for the entire compartment.
  • the reelable beam itself is made up of two juxtaposed half-beams, each of which is composed of a series of U-shaped elements, indicated by 8 (lower elements and 8 (upper elements) respectively, which carry teeth 9 mutually engaging in recesses or slots near the ends of the opposite faces of the upper and lower elements So that a projecting rigid self-supporting beam is formed.
  • Rollers 10 and extensions 10' are provided to guide the elements during their movement, while a feeder 11, in the form of a cam lever with its fulcrum at 12, is provided for the purpose of facilitating the sliding of the lower half-beam and two guides 13, 13' force the slidable elements 8, 8 to rotate sufiiciently to allow the continuous engagement and disengagement of the points of juncture or teeth 9.
  • the upper limit of the assembly head does not extend beyond the external profile of the beam neither in its assembled nor disassembled condition so that it does not project from the roof of the greenhouse.
  • the two half-beams composed of the elements 8, 8' are obtained by welding them toflexible strips 5, 5.
  • the whole assembly works like a flexible truss beam ⁇ with juncture points or knots (FIG. 5), distributed as indicated schematically in FIG. 6 by two circles.
  • each half-beam making up the reelable beam is joined by a C iron 14.
  • the elements of the upper half-beam Will be pasted on a sheet of transparent resin 15 and Will be clamped at the end thereof by means of a section iron 16.
  • the reelable beam By rotating the shaft 7 and thereby the gears 4 the reelable beam may be shortened or extended to cover or uncover the greenhouse.
  • the latter By rolling up the chain of opposed elements that form the beam the latter iS undone or disconnected so that the upper elements, including the sheet of resin, roll in the direction indicated by the arrow in FIG. l, while the elements of the lower series fall vertically and thus take up a position in which they occupy the minimum space.
  • the post b is provided with a plurality of through holes d.
  • a pin (not shown) may be passed through a hole (not shown) n the tubular post a and into a selected one of the holes d, in order to adjust the height of the assembly head to the desired level.
  • the entire assembly head may be rotated about a horizontal axis to a desired position.
  • the assembly head 1 is attached to the horizontal tube 2 which is adapted to be turned to the desired position and locked by means of the threaded stop pin 3 as previously described.
  • the adaptability of the assembly and the ease with which it can be taken apart allow it to be used in series on large areas of land by providing it with tubular upright supports which are placed at convenient equal distances from each other and, being easily visible, do not cause a hinderance to machines working on the land.
  • a reelable beam of adjustable length comprising:
  • each said element including two outwardly projecting teeth on a wall of said element substantially midway between the ends thereof, said teeth being sightly spaced from each other in the longitudinal direction of said element and being slightly curved away from each other;
  • each said element further dening a slot at each end thereof, the adjacent pair of slots of adjoining elements in either of said series being adapted to receive the two projecting teeth of an element in the other of said series of elements;
  • said strips being adapted to bring together the meeting elements of said series as said beam is extended outwardly with the respective series being so staggered in longitudinal relationship that said teeth of any one element directly oppose the juxtaposed slots of a pair of elements of the opposite series;
  • the two series of elements being adapted to pass through an assembly head mounted on a post;
  • gear means including at least one gear Wheel mounted on the assembly head for advancing and retracting the two series of elements, said gear wheel having teeth which engage in equi-distant notches provided in one of the strips to thereby move said strips and rmly lock the individual elements of the two series together and thus form a rigid self-supporting beam.
  • a reelable beam is claimed in claim 1 wherein the gear means includes two gear wheels engaging in the strip of flexible material and driven by an intermediate gear wheel movable by a shaft to which the intermediate gear wheel is splined, all the wheels being accommodated in a housing actuated to the assembly head.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Tents Or Canopies (AREA)
US566384A 1965-07-28 1966-07-19 Reelable beam Expired - Lifetime US3450186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1703165 1965-07-28

Publications (1)

Publication Number Publication Date
US3450186A true US3450186A (en) 1969-06-17

Family

ID=11149681

Family Applications (1)

Application Number Title Priority Date Filing Date
US566384A Expired - Lifetime US3450186A (en) 1965-07-28 1966-07-19 Reelable beam

Country Status (5)

Country Link
US (1) US3450186A (enrdf_load_stackoverflow)
JP (1) JPS502525B1 (enrdf_load_stackoverflow)
CH (1) CH436647A (enrdf_load_stackoverflow)
GB (1) GB1119105A (enrdf_load_stackoverflow)
NL (1) NL6610556A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503566A (en) * 1968-08-13 1970-03-31 Jesse B Travis Canopy container and tensioning device
US3805462A (en) * 1972-06-06 1974-04-23 C Caperton Restraining tube for sewer rod
US3815297A (en) * 1971-09-24 1974-06-11 Y Pasquier Construction of traveling building
US4192109A (en) * 1977-01-26 1980-03-11 Angelo Caffa Components of retractable beams, and assemblies thereof
US4204372A (en) * 1978-07-05 1980-05-27 Berdje Agopyan Retractable roof
US20060272728A1 (en) * 2003-03-26 2006-12-07 Bjarte Langeland Hinged and segmented pipe
US20090031647A1 (en) * 2007-07-31 2009-02-05 Ching-Lang Chang Solar panel mounting structure
US20160053536A1 (en) * 2014-08-21 2016-02-25 Troodon Torsysteme Gmbh Door, in particular vertical-lift door, for closing an opening in a wall which separates two different temperature zones from one another

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5665918U (enrdf_load_stackoverflow) * 1979-10-24 1981-06-02

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE429609C (de) * 1925-09-25 1926-05-31 Wilhelm Bauer Zusammenlegbarer Hohlkoerper, Stativfuss, Faltbootversteifung o. dgl.
US1834900A (en) * 1927-10-07 1931-12-01 Ernest Holmes Company Automobile lift
FR1136948A (fr) * 1955-10-24 1957-05-21 Poutre repliable et ses diverses applications
US3016988A (en) * 1959-10-19 1962-01-16 Charles W Browning Lifting device
US3213573A (en) * 1962-07-12 1965-10-26 Thiokol Chemical Corp Extensible and retractable member

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE429609C (de) * 1925-09-25 1926-05-31 Wilhelm Bauer Zusammenlegbarer Hohlkoerper, Stativfuss, Faltbootversteifung o. dgl.
US1834900A (en) * 1927-10-07 1931-12-01 Ernest Holmes Company Automobile lift
FR1136948A (fr) * 1955-10-24 1957-05-21 Poutre repliable et ses diverses applications
US3016988A (en) * 1959-10-19 1962-01-16 Charles W Browning Lifting device
US3213573A (en) * 1962-07-12 1965-10-26 Thiokol Chemical Corp Extensible and retractable member

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503566A (en) * 1968-08-13 1970-03-31 Jesse B Travis Canopy container and tensioning device
US3815297A (en) * 1971-09-24 1974-06-11 Y Pasquier Construction of traveling building
US3805462A (en) * 1972-06-06 1974-04-23 C Caperton Restraining tube for sewer rod
US4192109A (en) * 1977-01-26 1980-03-11 Angelo Caffa Components of retractable beams, and assemblies thereof
US4204372A (en) * 1978-07-05 1980-05-27 Berdje Agopyan Retractable roof
US20060272728A1 (en) * 2003-03-26 2006-12-07 Bjarte Langeland Hinged and segmented pipe
US7448414B2 (en) * 2003-03-26 2008-11-11 Bjarte Langeland Hinged and segmented pipe
US20090031647A1 (en) * 2007-07-31 2009-02-05 Ching-Lang Chang Solar panel mounting structure
US7703246B2 (en) * 2007-07-31 2010-04-27 Beautiful World Llc Solar panel mounting structure
US20160053536A1 (en) * 2014-08-21 2016-02-25 Troodon Torsysteme Gmbh Door, in particular vertical-lift door, for closing an opening in a wall which separates two different temperature zones from one another
US9803421B2 (en) * 2014-08-21 2017-10-31 Troodon Torsysteme Gmbh Door, in particular vertical-lift door, for closing an opening in a wall which separates two different temperature zones from one another

Also Published As

Publication number Publication date
CH436647A (it) 1967-05-31
NL6610556A (enrdf_load_stackoverflow) 1967-01-30
GB1119105A (en) 1968-07-10
JPS502525B1 (enrdf_load_stackoverflow) 1975-01-27

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