US1882454A - Screen for projected pictures - Google Patents

Screen for projected pictures Download PDF

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Publication number
US1882454A
US1882454A US467693A US46769330A US1882454A US 1882454 A US1882454 A US 1882454A US 467693 A US467693 A US 467693A US 46769330 A US46769330 A US 46769330A US 1882454 A US1882454 A US 1882454A
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United States
Prior art keywords
screen
frame
springs
projected pictures
pictures
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Expired - Lifetime
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US467693A
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John E Spalding
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Individual
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Priority to US467693A priority Critical patent/US1882454A/en
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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

Definitions

  • This construction permits the ready mounting or demounting of the screen and owing to the reverse draft of the springs on each side the tension upon it is even; and the springs compensate for varying changes of atmosphere, so as to maintain the screen in a smooth condition.
  • Such screens are used in display cabinets and for projecting pictures.
  • a screen for projected pictures consisting of a frame and a screen, and springs connected with the frame and with the edge of the screen, the springs on each side of the screen being arranged at different inclinations so as to oppose each other.
  • a screen for projected pictures comprising a frame formed with a groove extending around the inner edge, springs mounted on the frame in said grooves and those on each side extending at different inclinations to op pose each other, a screen provided with hooks adapted to be engaged by the said springs, and grooved flaps secured to the casing and adapted to fold over and enclose said springs.
  • This invention relates to improvement in screens, either translucent or opaque, such as are used for projecting pictures, etc.
  • screens are usually mounted in a frame and secured thereto by lacings, but it is somewhat difficult to lace the screen evenly in the frame, and tension on the screen varies with atmospheric conditions. In some cases, the frame forms a part of the cabinet.
  • Fig. 1 is a front view of a screen for projected pictures constructed in accordance with my invention
  • Fig. 2 is an edge view of the same
  • Fig. 3 is a view with the flaps of the frame open
  • Fig. 4 is a sectional view on the line 4-4 of Fig. 1;
  • Fig. 5 is a frame
  • Fig. 6 is an edge view of the same.
  • I employ a rectangular frame 10 of suitable size, the corners of which are mortisd or ⁇ doweled together.
  • the screen 11 is formed from suit able fabric material and usually provided with a fabric binder 12 to which hooks 13 are attachedl Secured to the frame itself by screws 14 or otherwise are coil-springs 15, the ends of which engage with the hooks 13.
  • the position of the fixed end of the springs is at an angle to the connectigg-hooks on the screen, so that these springs stand in an inclined position, and pull in opposite directions toward opposite edges of the screen.
  • the inner edge of the frame will be formed with a recess 16 in which the springs are located, and secured to each side of the frame are flaps 17 formed with recesses 18 corresponding to the recesses 16, so that when the iaps are turned inward they will hide and protect the springs, although, for

Description

Oct. 11, 1932. J. E. sPALDlNG 1,882,454
SCREEN FOR PROJECTED PICTURES 1 Filed July 14, 1930 2 Sheets-Sheet 1 Waff 5W/a' l l l I l l Oct. l1, 1932. .1. E. SPALDING SCREEN FOR PROJECTED PICTURES Filed July 14, 19:50 2 sheets-sheet 2 Patented Oct. 11, 1932 UNITE STATES PATENT OFFICE JOHN E. SPALDING, F NEW HAVEN, CONNECTICUT SCREEN FOR PROJECTED PICTURES Application ledJuly 14, 1930. Serial No. 467,693.
many purposes, there is no 0b exposure of the springs.
This construction permits the ready mounting or demounting of the screen and owing to the reverse draft of the springs on each side the tension upon it is even; and the springs compensate for varying changes of atmosphere, so as to maintain the screen in a smooth condition.
Such screens are used in display cabinets and for projecting pictures.
I claim:
1. A screen for projected pictures consisting of a frame and a screen, and springs connected with the frame and with the edge of the screen, the springs on each side of the screen being arranged at different inclinations so as to oppose each other.
2. A screen for projected pictures comprising a frame formed with a groove extending around the inner edge, springs mounted on the frame in said grooves and those on each side extending at different inclinations to op pose each other, a screen provided with hooks adapted to be engaged by the said springs, and grooved flaps secured to the casing and adapted to fold over and enclose said springs.
In testimony whereof, I have signed this specification.
JOHN E. SPALDING.
This invention relates to improvement in screens, either translucent or opaque, such as are used for projecting pictures, etc. These screens are usually mounted in a frame and secured thereto by lacings, but it is somewhat difficult to lace the screen evenly in the frame, and tension on the screen varies with atmospheric conditions. In some cases, the frame forms a part of the cabinet.
The object of this invention is to mount the screen in a frame, so that it will be firmly and evenly held in position and adapted to adjust itself to various atmospheric conditions, and' the invention consists in a screen for projected pictures having certain details of construction as will be hereinafter described and particularly recited in the claims. In the accompanying drawings: Fig. 1 is a front view of a screen for projected pictures constructed in accordance with my invention;
Fig. 2 is an edge view of the same;
Fig. 3 is a view with the flaps of the frame open;
Fig. 4 is a sectional view on the line 4-4 of Fig. 1;
Fig. 5 is a frame; and
Fig. 6 is an edge view of the same. l
In carrying out my invention I employ a rectangular frame 10 of suitable size, the corners of which are mortisd or`doweled together. The screen 11 is formed from suit able fabric material and usually provided with a fabric binder 12 to which hooks 13 are attachedl Secured to the frame itself by screws 14 or otherwise are coil-springs 15, the ends of which engage with the hooks 13. The position of the fixed end of the springs is at an angle to the connectigg-hooks on the screen, so that these springs stand in an inclined position, and pull in opposite directions toward opposite edges of the screen.
Preferably, the inner edge of the frame will be formed with a recess 16 in which the springs are located, and secured to each side of the frame are flaps 17 formed with recesses 18 corresponding to the recesses 16, so that when the iaps are turned inward they will hide and protect the springs, although, for
jection to the face view ofa modified form of
US467693A 1930-07-14 1930-07-14 Screen for projected pictures Expired - Lifetime US1882454A (en)

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US467693A US1882454A (en) 1930-07-14 1930-07-14 Screen for projected pictures

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119762A1 (en) * 1983-02-22 1984-09-26 Marler Haley Exposystems Limited Improvements in or relating to the tensioning of flexible sheets across frames
DE3514533A1 (en) * 1984-04-20 1985-11-07 Marketing Displays, Inc., Farmington Hills, Mich. DEVICE FOR KEEPING A POSTER
US4756107A (en) * 1987-04-14 1988-07-12 Marketing Displays, Inc. Display retention and tensioning frame
US4782610A (en) * 1986-09-10 1988-11-08 Marketing Displays, Inc. Display assembly with illumination system
US4958458A (en) * 1987-03-13 1990-09-25 Marketing Displays, Inc. Poster display device with longitudinal retention of frame sections by inserts
US6088942A (en) * 1997-04-11 2000-07-18 Abc Sign Products, Inc. Method and apparatus for retaining flexible material in a sign system
US20050262743A1 (en) * 2004-05-27 2005-12-01 John Siegenthaler System and method for mounting a sign
US20080301989A1 (en) * 2007-04-23 2008-12-11 Britten Paul J Frame for a flexible banner and frame and flexible banner assembly
US20090307949A1 (en) * 2008-06-17 2009-12-17 Povilaitis Darius A Banner Mounting Assembly and Method
US20100053746A1 (en) * 2008-08-29 2010-03-04 Chris Seymour Reinforced Retractable Projection Screen with a Tab Tensioning System and a Border
GB2587396A (en) * 2019-09-27 2021-03-31 Learning With Linden Ltd Banner frame
USD1005698S1 (en) * 2021-03-03 2023-11-28 Antony James Wrobel Canvas frame

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119762A1 (en) * 1983-02-22 1984-09-26 Marler Haley Exposystems Limited Improvements in or relating to the tensioning of flexible sheets across frames
DE3514533A1 (en) * 1984-04-20 1985-11-07 Marketing Displays, Inc., Farmington Hills, Mich. DEVICE FOR KEEPING A POSTER
US4580361A (en) * 1984-04-20 1986-04-08 Marketing Displays, Inc. Display tensioning frame
US4782610A (en) * 1986-09-10 1988-11-08 Marketing Displays, Inc. Display assembly with illumination system
US4958458A (en) * 1987-03-13 1990-09-25 Marketing Displays, Inc. Poster display device with longitudinal retention of frame sections by inserts
US4756107A (en) * 1987-04-14 1988-07-12 Marketing Displays, Inc. Display retention and tensioning frame
US6088942A (en) * 1997-04-11 2000-07-18 Abc Sign Products, Inc. Method and apparatus for retaining flexible material in a sign system
US7168197B2 (en) * 2004-05-27 2007-01-30 John Siegenthaler System and method for mounting a sign
US20050262743A1 (en) * 2004-05-27 2005-12-01 John Siegenthaler System and method for mounting a sign
US20080301989A1 (en) * 2007-04-23 2008-12-11 Britten Paul J Frame for a flexible banner and frame and flexible banner assembly
US20090307949A1 (en) * 2008-06-17 2009-12-17 Povilaitis Darius A Banner Mounting Assembly and Method
US7861448B2 (en) 2008-06-17 2011-01-04 Povilaitis Darius A Banner mounting assembly and method
US20100053746A1 (en) * 2008-08-29 2010-03-04 Chris Seymour Reinforced Retractable Projection Screen with a Tab Tensioning System and a Border
US7872802B2 (en) 2008-08-29 2011-01-18 Chris Seymour Reinforced retractable projection screen with a tab tensioning system and a border
GB2587396A (en) * 2019-09-27 2021-03-31 Learning With Linden Ltd Banner frame
USD1005698S1 (en) * 2021-03-03 2023-11-28 Antony James Wrobel Canvas frame
USD1022479S1 (en) 2021-03-03 2024-04-16 Antony James Wrobel Canvas frame

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