US1616928A - Projection-screen holding clip - Google Patents

Description

f :1927; l Feb 8 c.-x=.sPE1DEL EROJTECVTIOM SCREEN' HGLDING' CLIP Filed oat., 2ol 1923 y .,TIORNEYS.

Patented Feb. s, 1927.

UNITED STATES 1,516,928 'PATENT orric.

CHARLES 1F.v SPEIDEL, OF ROCHESTER, NEW YORK. ASSIGOR TO EASTIVIAN KODAK COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW' YORK.

rnoJnCrIoN-scnnnn HOLDING CLIP.

Application filed October 20, 1923. Serial No. 669.685. I

lie in an inoperative position without. pro-v jecting from its support when in such an inoperative position. Still another object is to provide the clip with a gripping portionadapted to firmly engage and hold a portion of the screen. Another object is to provide a clip by means of which the screen may be drawn taut and freeA from wrinkles. Other objects will appear from the following specification, the novel features being pointed out in the claims at the end thereof. Fig. 1 is an elevation 'of a screen equipped with clips constructed in accordance with and illustrating one form of my invention;

Fig. 2 is an enlarged detail plan of a clip with a portion ofthe support upon which it is mounted;

Fig. 3 is a longitudinal section through vmy clip and the clip pocket, showing the clip in an inoperative position;

Fig. 4 is`a view similar to that of Fig. 2, but showing the clip in an operative position engaging an edge ofthe screen; and

Fig. 5 is adetail section through the clip pocket but with the clip shown in fiill lines engaging the screen.

The pro]ection screen is of the-folding variety and may be, as illustrated, of the same construction as the screen shown in the The curtain 1 is of flexible material attached by a bar 2 to the top frame member 3,

and at the bottom to a roller 4 adapted to turn on trunnions 5 revolubly mounted in blocks 6. The base consists of a box 7, of

whichl blocks 6 form the ends. and into 'which the top frame 3, and side frame mein-4 bers 8 may fold when not in use. The curtain isy wound upon roller 4. There may be a handle 9 to carry the box. The screen so far described may be similar to'the Jones screen above cited'.`

Coming now to my invention,- it someti'l'ncs happens tha-t'duc .to various causes such as atmospheric condltions the curtain 4l nia)T tend to wrinkle between the edges 10 which will he held 'by the spring roller 4 under more or less tension against thesidc fran'ie iiiciuhers 8. These. wrinkles can be smoothed out and the screen can'bc held Hat by the. clips'll which will .now be described.

A series of'pockets 12 are eilt into the frainc incuibeis S, each having a shallow seat 1 3 with a portion of gradually increas ing depth 14 extending therefrom, so as to forin a. clip holding vpocket'inv which vthe clip may lie inside of thewalls of a frame member.

The clips 11 may each consist of a piece I ofspring metal having a bent up finger grip 15. two pairs of spaced lugs 16 and 17,

a shank 18 and a. base 19 formed with an extension 20 at the end on one side forming a stop lug, and pivotally attached in the seat 13 bya screw 41. A frictional foot 21, here shown as conveniently made from a short section of rubber tubing, is located between the pairs of lugs 16 and 17, so that it is heldin place. If necessary anew piece of rubber may be readily inserted.

, The operation of the device is as follows:` l

ng up the screen with the Hex- After setti ible curtain 1 uni-olled as in Fig. 1, the clips are still in the position shown in Fig. 2. The finger grip 15 isthen used to draw the clipfrom its pocket 12 and then it is swung 'over without contacting the screen to the position shown in Fig. 4, andthe rubber foot 21 is then placed in contact with the curtain edge 10. By moving the finger grip toward the edge of the curtain while in contact therewith, the curtain will be stretched or smoothed Hat upon the frame uprights S, and, when all the clips are in place, the curtain will lie in a plane.

It should be noted that the extension 20, by striking the edge 33 of seat`13 forms a stop so that the clip cannot be swung so far across member 8 as to press curtain 1 ,into the opening between the `frame members.' When the clip is in-its inoperative position in the seat, as can be seen from Fig. 3, no part of the clip projects above the surface 38 of the frame member, so that these parts can be easily placed in box 7 when the screen is to be -folded.

Having thus described my-invention, what I' claim as new and desire to secure by `Letters Patent is: y

l. ln a projection screen, the combination with a frame having a pocket cut therein,

of a flexible curtain adapted to lie against l the frame, a clip movably mounted` in the pocket, and adapted to move from a position i in which it contacts With a portion of othe curtain holding it flat against the frame mtoA the pocket and out of Contact with thetlexyible curtain.

2. In a projection screen, the combination with a frame havinga pocket out therein, of

a Aflexible curtain adaptedto lie against the frame, and means carried bythe frame tor pressing a portion of the curtain Hat aga-inst `the frame, said means being movable and- `being adapted to lie entirely within the pocket when not'l in use.

3. In a projection screen, the combination with a frame, of a flexible curtain adapted to be stretched thereover, of supports for Y the ends of the screen, and spring clips for holdingthe sides ot' the curtain against the side frame members, pockets for the clips in the frame members, said clips being movable between an operative position in which a portionof a clip engages an edge of the curtain, and an inoperative position in which the clip lies -entirely inside of the pocket .cut in the frame, member.

4. In a projection screen, the combination with a frame made of a plurality of frame members of a flexible curtain adapted to lie member, to a position outside of the frame member in which it may contact with and press the flexible curtain against a frame member.

5. In a projection screen, the coi'iibinatioii with a frame made of a'pluirality ot' menibei's, a flexible curtain adapted to be against the frame, at least one frame member having apocket formed therein with side and bottom walls, a spring clip mounted in the pocket and being adapted to be moved lo `and from the pocket upon its mount, a portion of the spring clip, being shaped to strike a wall of the pocket lto limit the movement of the clip. y

(S. In a projection screen, the combination with a frame made ot' a plurality of meiny bers, a flexible curtain adapted tobe against the frame, said curtain being attac-hed to some of the frame. members. and being adapted to lieagainst other of .the frame members, said last named frame members being provided with a plurality of pockets provided With bottom and side Walls, spring clips pivotallymounted in the pockets, portions of the clip and the side Walls of the pockets eooperatin to limit .the movement of the clips upon t eir pivots.

7. In a projection screen, the combination with a frame made of a plurality otmemy bers, a flexible curtain adapted to be against the frame, at least one frame member Ihaving a pocket formed thereinwith side and bottom Walls, a spring clip p ivotally attached .to a bottom Wall of the pocket being movable upon the pivot to and from a posil tion in which the` clip lies in the l pocket, an extension on the clip adapted to stop to limit the movement of the clip upon its pivot, said extension being adapted to stop the clip by striking a Wall of the pocket..

Signed at Rochester, New York, this 17th day of October, 1923.

CHAs. E. sPEiDEL.

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