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Publication numberUS1700637 A
Publication typeGrant
Publication dateJan 29, 1929
Filing dateJan 26, 1928
Publication numberUS 1700637 A, US 1700637A, US-A-1700637, US1700637 A, US1700637A
InventorsDavid C. Lamb
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Poet able adjustable screen
US 1700637 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

D. c. LAMB PORTABLE ADJUSTABLE SCREEN Original Filed Jan. 26. 1928 2 Sheets-Sheet 1 attorneys.

Jan. 29, 1929. 1,700,637

D. C. LAMB PORTABLE ADJUSTABLE SCREEN Original Filed Jan. 26. 1928 2 Sheets-Sheet 2 a Ihwentor 1700M 6. Land "ll/Uh." m-M Cmornegs.

Patented Jan. 29, 1929.




Application filed. January 26', 1928, Serial No. 249,731. Renewed December 7, 1928.

My present invention relates to improvements in portable adjustable screens adapted for home or office use, the structure belng devised so that it may be stored out of the way and may be readily moved to the desired position, and adjusted to suit the needs of the occasion. Amongst the many uses for which the screen is intended may be mention ed itsuse to protect individuals from drafts, to protect the eyes of a reader from glaring lights, for use in displaying maps or advertising data, orfor use as adjustable screens for moving pictures in the home. These are some of the many uses to WlllCll the device may be applied, or for which it is suitable.

My invention will be more fully understood after reference to the accompanylng drawings, in which like parts are indicated by.

similar reference symbols throughout the several views, and in which,

Figure 1 is a perspective view, showing the screen in use mounted on the standard and partly unrolled.

Figure 2 shows a section along the line 2--2 of Figure 1, and looking in the direction of the arrows, parts being shown in elevation.

Figure 3 shows a section along the line of Figures 1 and 2, and looking in the dlrection of the arrows.

Figure 4 is a detail view, showing the upper portion of the adjustable standard with the ring for transportation of same.

Figure 5 is a detail view, showing a portion of the roller frame and standard as seen from the rear, and showing the roller frame in the horizontal position.

Figure 6 is a similar view to Figure 5, but shows the roller framein the vertical position, as when the screen is not in use, and in the most compact form.

Figure 7 is an enlarged detail view, showing the method of attaching the upper end of the screen to the vertically adjustable rod, parts being broken away.

Figure 8 shows a section along the line 88 of Figure 7 and looking in the direction of the arrows.

Figure 9 is a front view showing the lower frame of the screen with the roller mounted- Figure 11 shows a section along the line 11-11 of Figure 9, looking in the direction of the arrows, and showing the locking arrangement for holding the screen sheet to the desired degree of extension, and,

Figure 12 is a perspective of the leaf spring,which is used in holding theroller frame in the vertical or housed position.

A represents the heavy base piece orpedestal, which should be of suificient weight to prevent the screen from toppling over in ordinary use. Pivotally attached to this base, as by the screw threaded end I), and prefer ably screwed therein is the tubular standard B, into which telescopes the rod C, which rod may be adjusted vertically by means of the clamp screw D. The rod C is threaded at its upper end as at 0', and on this screw threaded portion is mounted the supporting nut E and the clamp nut F, which latter may be of ornamental design and carries the ring or handle F, by which the screen and its supports may be conveniently transported from place to place.

G represents a bracket in the form of an angle iron, having one arm 9 clamped between the nuts E and F, and the other arm 9 carries the finger G, which may be made part of the bracket G, or a separate piece welded thereto, as shown in Figure 8. This finger G forms a hook, which passes through the hole 72, in the handle H carried by the upper frame I of the sheet J, which constitutes the screen proper.

The lower end of the screen sheet J is rolled on the roller K, which is generally similar to the curtain rollers commonly in use for shades. This rolleris hollow, and carries the coil spring K onits interior, which northe roller is released, as occurs with window shades, and as will be more fully herein described.

This roller is mounted in the lower frame or roller frame of the screen, which is shown in Figures 2, 3 and 9 toll. This frame comprises an angle beam M, which has the two ends bent at right angles, as shown at m and m in Figure 3. In the bent over end m, the stud pin 70 of the roller K is free to rotate, and the other end of the roller is ournaled in the roller frame, as will be hereinafter described.

At the other end of the roller from 70, the roller is provided with the angular stud )in In, which fits in a socket a of the sleeve Figures 9 to 11).

This cam piece is provided with two toes n and n adapted'to engage the latching p carried by the spring P, so that thislatch will catch in thecam piece, unless the spring is thrown out of engagemenhwhich may be done by pressing out on the arm 39 of the spring P, (see Figure 11).

The campieceh is rigidly attached to the handle piece Q, so that the roller K may be rotated by hand as may be required in ad justing the tension of the roller spring K.

The lOQLIILM of the lower frame carriesv a collar R,WlllCl1 slides freely on the standard .15, and may be clamped at the desired height on said standard by the clamp screw R. Thus the lower frame may be raised or lowered, as desired, and the screen drawn out against theroller spring, or automatically wound up thereby like an ordinary roller shade. Thecollar It is swivelled to the beam M, as, shown at?" in Figure 2.

In mounting the screen in the operative position,lthe hole h of the hand hook H is caused to engage the finger G, as shown in Figures 7 and 8, and the lower frame ofthe screen is moved down to the desired position, such as indicated-in Figure 2. When in this position, the screen sheet J will be distended,

and the amount of distension may be varied, as deslred.

locating outof the way, so as to occupy a minimum of space, I provide an arrangement by which the screen: may be rolled up and held in a position parallel to the standard, such position being indicated inFigure 6. In order to automatically hold the rolled up screen in such a position, I provide the leaf spring S, (see Figures 3,5,6 and 12).

The edge of this leaf spring S projects slightly beyond the beam M, asshown in Figure 3, but clears the standard when the beam is at right anglesto the standard, as shown in 1 said figure; and thus it does not interfere with thefree vertical movement of the beam M. a In this position, the screen is also clear of the collar R, carrying the clamp screw It, as

shown in Figure 5, but when the beam M is turned to the vertical position, the protruding edge of this spring S will bind against the outer face of the collar R, as shown in Figure 6, and this engagement of the spring and collar will cause the beam M to remainin the vertical position, unless swung down by hand.

The leaf spring S is heldin placev at one end by the screw of rivet s, so that it has the limited play desired.

' roller spring, and when it isrolled up, and the collar R clamped at the desired position on shown in Figure 6,,and the springv S will automatically hold it in this position until released.

The screen sheet J may be made of canvas, white cotton, cotton duck, or paper, or any suitable material, which maybe rolled or unrolled, and the screen sheet may be left plain, as for use with motionpictures, or it maybear any design printed or otherwise delineated thereon.

Obviously the length of the curtain may be varied to suit the requirements of the occasion by loosening up on the clamp nut D and raising the rod E to the desiredheight.

Moreover,the lower frame may be brought down by loosening thescrew clamp R1 and lowering theframe M; thus providing for a greater vertical depth of the curtain.

In adjusting the screen," the upper and lower frames should preferably be made parallel, and both clamped at the desiredpo- I invention in its preferred form, it will'be ob- For convenience 111 transportation, or for I claim and desire to secure by Letters Patent of the United States is 1. A portable adjustable screen comprising a heavypedestal, a hollow standard mounted thereon, a rod telescoping in said hollow standard, a clamp screw carried by said standard for holding said rod at the desired position a head piece provided with a handle mounted on the upper end ofsaid rod, an upper screen frame, means for attaching said frame to said head piece, a lower screen frame, a collar slidably connected to said standard, and pivotally connected to said lower frame, a leaf spring carried by said lower frame normally clear of said collar, but adapted to bind. against said collar when the lower frame is swung to the vertical position, a roller ournalledin said lower frame, and a curtain roller spring arrangement cooperating with said roller, for automatically turning said roller in one direction, when released, anda flexible screen sheet secured at one end to said upper frameiand having its lower end wound on said roller.

2. A portable adjustable screen comprising a heavy pedestal, a hollow standard mounted thereon, a rod screw threaded at its upper end and telescoping in said hollow standard, a set screw carried by said standard for holding said red at the desired position, a head piece provided with a handle and an internally screw threaded socket adapted to screw on the upper end of said rod, an upper screen frame, having an attachin device extending upwardly therefrom, a bracket fitted on said rod directly beneath said head piece, the said attaching device having an aperture in its free end through which said bracket projects, a lower screen frame adjustably connected to said standard, a spring roller journalled in said lower frame, for automatically turning said roller in one direction, when released, and a flexible screen sheet secured atone end to said upper frame and having its lower end wound on said roller.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2793687 *Jun 22, 1953May 28, 1957Knox Mfg CompanyMovie screen stretching device
US3225818 *Aug 14, 1963Dec 28, 1965Wise Glenn EProjection screen
US3841594 *May 18, 1973Oct 15, 1974Knox Mfg CoCollapsible projection screen
US6370803Dec 7, 1999Apr 16, 2002Visionquest DisplayBanner stand having swivel connector and methods
US6571496 *Jul 30, 2001Jun 3, 2003Expand International Of America, Inc.Portable visual display device with removable cassette
US7337567 *Dec 1, 2004Mar 4, 2008Skyline Displays, Inc.Retractable banner stand with curvature means
US7963059Jun 21, 2011Skyline Displays, Inc.Tradeshow display formed of banner stands
US8091605 *Jan 25, 2007Jan 10, 2012Jim Melhart Piano and Organ CompanyAcoustic panel assembly
US8458937Jun 11, 2013Skyline Displays, Inc.Tradeshow display formed of banner stands
US8783328Jan 9, 2012Jul 22, 2014Jim Melhart Paino and Organ CompanyAcoustic panel assembly
US9378726Jun 16, 2014Jun 28, 2016Jim Melhart Piano and Organ CompanyAcoustic panel assembly
US20080005945 *Dec 1, 2004Jan 10, 2008Fritsche Mark ARetractable banner stand with curvature means
US20080105797 *Oct 29, 2007May 8, 2008Skyline Displays, Inc.Curved retractable banner stand
US20090056184 *Mar 4, 2008Mar 5, 2009Skyline Displays, Inc.Tradeshow display formed of banner stands
DE19963120A1 *Dec 24, 1999Aug 23, 2001Thomas SchieferInformation reproduction device comprises panel, device for fixing paper and withdrawable projection screen, components combined in single apparatus
DE19963120B4 *Dec 24, 1999Oct 20, 2005Thomas SchieferInformationswiedergabevorrichtung
U.S. Classification160/244, 160/323.1, 160/351, 160/24
International ClassificationA47G5/02, A47G5/00
Cooperative ClassificationA47G5/02
European ClassificationA47G5/02