US3822733A - Device for rotatable support of rolls comprising a web of cloth or similar - Google Patents

Device for rotatable support of rolls comprising a web of cloth or similar Download PDF

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Publication number
US3822733A
US3822733A US00086434A US8643470A US3822733A US 3822733 A US3822733 A US 3822733A US 00086434 A US00086434 A US 00086434A US 8643470 A US8643470 A US 8643470A US 3822733 A US3822733 A US 3822733A
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United States
Prior art keywords
rollers
web
supports
rolls
roll
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Expired - Lifetime
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US00086434A
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English (en)
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B Lindelow
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Individual
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Individual
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio

Definitions

  • ABSTRACT A device for the rotatable support of rolls of cloth or the like webs, which webs can be lowered from the device by the rotation of the roll to serve as a back 'ground screen, for example, in photographic studios and the web raised by rewinding the same to roll form on the device which is supported at an appropriate height when in use.
  • the present invention relates to a device for rotatable support of rolls comprising a web of cloth or similar, which web by the rotation of the roll is unwound and lowered from the device, which is positioned at a suitable height level, said web thereby serving the purpose of a back ground screen by way of example in photographic studios, the device being arranged also for rewinding of the web to a roll form, and comprising two rotatably mounted and interspaced rollers, between which the web shall hang in suspension and the longitudinal axis of which are in a common horizontal plane in the intended working position.
  • roller screens When using roller screens as backgrounds in for example photographic studios it is of great value, if the screens are rapidly interchangeable. Because of the fact that quite a number of screens generally must be available it is also desirable that each screen roll shall be as simple as possible, as light as possible and occupy as little space as possible. Said conditions are not fulfilled in roller devices for said purpose according to the prior art.
  • Such known roller devices require for their proper functioning that the roll is provided with a rotatable core, which means that in each mounting operasteps of 90 by the arrangement of three holes 9 corretion the core must be connected with the supporting means and be coupled to a rotation device for rewinding of the web.
  • the object of the invention is obtained by making the.
  • rollers alone suspend and guide the screen roll and that they are coupled to a gear transmission enabling them simultaneously and at the same speed to be driven from said transmission, the screen roll bearing against the rollers thereby being rotated by friction.
  • FIG. 1 illustrates a perspective view of the device carrying a screen roll
  • FIG. 2 shows a view from the left of the device in FIG. 1
  • FIG. 3 is the device in FIG. 1 in a vertical cross sectional view at the right end along the center axis, as seen from the inside, and
  • FIG. 4 is a front view of the device,the longtudinal extension of the rollers being shortened by a portion having been cut off.
  • the'device comprises two end portions 1 and 2, each one comprising an angular support 3 and 4 respectively and a circular disc 5 and 6 respectively, which can be rotated in relation to its support around its centre, it also being possible to fix said disc at the support by means of a screw 7 and 8 respectively (see also FIG. 4) in three different positions in spondingly located in the discs 5 and 6 (see also FIGS. 2 and 3).
  • the supports 3 and 4 as shown in FIG. 1 are intended tobe fixed to a roof, but also to a wall, in the latter case the supports being pivoted from the position illustrated in FIG. 1 in relation to the discs 5 and 6 respectively by changing the screws 7 and 8 to another one of the holes 9.
  • the supports 3 and 4 can of course also be interconnected by an elongated bar, -not shown, which in its turn is fixed or suspended.
  • the end portions 1 and 2 after the mounting shall exhibit a predetermined distance in between them, which is adjusted according to two rollers 10 and 11, which by means of pivot pins 12 and 13 are pivotably suspended in bushings 14 of the discs 5 and 6.
  • the pivot pins 12 of the rollers 10, 11 at the disc 5 as shown in FIGS. 2 and 4 are provided each one with identically shaped gears 15, which engage a gear 16 concentrically journalled in the disc 5.
  • the gear 16 is mounted on a shaft 17, which extends through the support 3 and at the outside of said support carrying a pulley 18.
  • the rollers 10 and 11 according to FIG. 3 are suitably made of tubular material provided with inserted end portions with pivot pins, and they are suitably at least in part coated with or made of a friction material, by way of example, rubber.
  • the discs 5 and 6 according to FIG. 4 are pivotably mounted relative to the respective supports on the disc 6 by means of a centric screw 19 and on the disc 5 by means of the shaft 17 joumalled in said disc and the support 3.
  • spacers 20 and 21 an interspace is obtained between the discs and the res'pective supports, in which the ends of the shafts, the gear transmission, etc., are received.
  • the pulley 18 is intended to receive an endless cord 22 (see FIG. 1) which is impeded from sliding off the pulley by means of pins 23 and which is kept in tension by means of a weight 24.
  • the screen roll 25, which'is going to be used together with the device, is made of fairly stiff material and is not equipped with any core, but at its free edge it is provided with a weighting bar 26. As is evident from FIGS. 1 and 3 the screen roll is placed on the rollers 10 and 11 with the portions 27 of the web, which shall be unwound, hanging down between the rollers.
  • a screen roll 25 of the web material, stored in wound-up roll form is placed on the rollers 10 and 11. Thereafter the web material can be unwound by rotating the pulley 18 clockwise by means of the cord 22, the gear 16 by means of the shaft 17 joining in the resulting movement, so that also the gears 15 rotate. In the movement of the gears 15 the rollers 10 and 11 take part and are therefore rotating counterclockwise. By contact between the rollers and the web material the screen roll is rotating and its outer layers are successively unwound, whereby the web is lowered between the rollers. When approximately one layer of the screen roll is left, the unwinding movement is interrupted, so that the web material is tained by means of friction between the hook of the weight and the cord, so that the web material cannot be unwound by its own weight.
  • a device in which a screen roll can be placed in rotatable mounting merely by simply placing the same on the two rollers, and in which arrangement the screen roll only in case it is made of very soft material does require any core, which in any case then can be of a very of driving said rollers at the same speed in both directions, said web having a portion extending between and frictionally engaging said rollers for being unwound and wound by said rollers with the free end of said web portion hanging down between and from said rollers.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Advancing Webs (AREA)
  • Screen Printers (AREA)
US00086434A 1969-11-05 1970-11-03 Device for rotatable support of rolls comprising a web of cloth or similar Expired - Lifetime US3822733A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15136/69A SE348377B (enrdf_load_html_response) 1969-11-05 1969-11-05

Publications (1)

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US3822733A true US3822733A (en) 1974-07-09

Family

ID=20300202

Family Applications (1)

Application Number Title Priority Date Filing Date
US00086434A Expired - Lifetime US3822733A (en) 1969-11-05 1970-11-03 Device for rotatable support of rolls comprising a web of cloth or similar

Country Status (5)

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US (1) US3822733A (enrdf_load_html_response)
DE (1) DE2054367A1 (enrdf_load_html_response)
FR (1) FR2066996B1 (enrdf_load_html_response)
GB (1) GB1299509A (enrdf_load_html_response)
SE (1) SE348377B (enrdf_load_html_response)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980122A (en) * 1974-05-13 1976-09-14 Ietsugu Takazawa Curtain turning device
US4807684A (en) * 1987-06-11 1989-02-28 Melton John G Roll up closet door
CN103792774A (zh) * 2014-02-13 2014-05-14 江苏红叶视听器材股份有限公司 吸顶幕
CN103955103A (zh) * 2014-04-30 2014-07-30 蔡强胜 一种软质卷曲式颜色背景
WO2018200875A1 (en) * 2017-04-26 2018-11-01 Joel Klein Modular roll-up wall system
US10844657B2 (en) 2014-05-15 2020-11-24 Tudelu Llc Roll-up wall and acoustic barrier system
US12134935B2 (en) * 2017-04-28 2024-11-05 Springs Window Fashions, Llc Center drop shade mount

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944156A1 (de) * 1979-11-02 1981-05-14 Mechanische Weberei Gmbh, 4792 Bad Lippspringe Grossformatige lichtbildwand mit antrieb
DE10120394C1 (de) * 2001-04-25 2003-02-20 Gerriets Gmbh Rohrverbinder und Rohr für die Veranstaltungstechnik
CN105435472A (zh) * 2015-12-29 2016-03-30 芜湖华强文化科技产业有限公司 一种娱乐用舞台帷幕

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20013A (en) * 1858-04-20 Ctrataiet-fixttjre
US111405A (en) * 1871-01-31 Improvement in curtain-fixtures
US2547399A (en) * 1947-12-24 1951-04-03 Bell Telephone Labor Inc Winding mechanism for tight winding paper tape on spools
US2954823A (en) * 1958-12-19 1960-10-04 Charles W Davis Background supports
US2980356A (en) * 1958-09-26 1961-04-18 Azon Corp Non-stop winding of continuous web into successive rolls
US3055606A (en) * 1959-01-08 1962-09-25 Johnson & Johnson Roll winding machine
US3311160A (en) * 1965-12-08 1967-03-28 Barbour Edward Window shade construction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20013A (en) * 1858-04-20 Ctrataiet-fixttjre
US111405A (en) * 1871-01-31 Improvement in curtain-fixtures
US2547399A (en) * 1947-12-24 1951-04-03 Bell Telephone Labor Inc Winding mechanism for tight winding paper tape on spools
US2980356A (en) * 1958-09-26 1961-04-18 Azon Corp Non-stop winding of continuous web into successive rolls
US2954823A (en) * 1958-12-19 1960-10-04 Charles W Davis Background supports
US3055606A (en) * 1959-01-08 1962-09-25 Johnson & Johnson Roll winding machine
US3311160A (en) * 1965-12-08 1967-03-28 Barbour Edward Window shade construction

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980122A (en) * 1974-05-13 1976-09-14 Ietsugu Takazawa Curtain turning device
US4807684A (en) * 1987-06-11 1989-02-28 Melton John G Roll up closet door
CN103792774A (zh) * 2014-02-13 2014-05-14 江苏红叶视听器材股份有限公司 吸顶幕
CN103955103A (zh) * 2014-04-30 2014-07-30 蔡强胜 一种软质卷曲式颜色背景
US10844657B2 (en) 2014-05-15 2020-11-24 Tudelu Llc Roll-up wall and acoustic barrier system
WO2018200875A1 (en) * 2017-04-26 2018-11-01 Joel Klein Modular roll-up wall system
US11131090B2 (en) 2017-04-26 2021-09-28 Tudelu Llc Modular roll-up wall system
US12134935B2 (en) * 2017-04-28 2024-11-05 Springs Window Fashions, Llc Center drop shade mount

Also Published As

Publication number Publication date
FR2066996B1 (enrdf_load_html_response) 1973-02-02
DE2054367A1 (de) 1971-05-13
GB1299509A (en) 1972-12-13
SE348377B (enrdf_load_html_response) 1972-09-04
FR2066996A1 (enrdf_load_html_response) 1971-08-13

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