US1460600A - Folding hood and screen - Google Patents

Description

July 3., 1923. 1,460,600

G. L; W. PALMER FOLDING HOOD AND SCREEN Filed Nova 19. 1920 l rgvegzborr ig- George ".JZZBLZHLeYT Patented July 3, 1923.

UNITED STATES snonsn L. PALMER, or PLAINFIELD, Nnw JnRsnY.

FOLDING HOOD AND SCREEN.

Application filed November 19, 1920. Serial no. 425,235.

T all whom it may concern Beit known that I, GEORGE L. WV. PALMER, a citizen of the United States, residing at Plainfield, in the county of Union and State of New Jersey, have invented new and useful Improvements in Folding Hoods and Screens, of which the following is a specification.

' and locate the same a pre-determined distance in front of a projecting apparatus in the path of the rays of lightbeing projected therefrom, the intervening space between the screen and the projecting'apparatus being enclosed within a non-light penetrating hood, thereby confining said rays of light within a dark enclosure in order that the picture exhibited upon the screen may be intensified.

It is also an object of the invention to so supportthe screen and hood upon the casing of a projecting apparatus that they will bexsecurely held in an extended position when in use and easily disconnected and folded when not in use or: when packing for I shipment.

" The invention consists in the combination and arrangement of" parts set forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawings, Figure 1 represents a plan view ofa folding hood and screen embodying my invention, the same be ing illustrated in its extended position and attached to the casing of a projecting apparatus, a portion ofwhich is also illustrated. 3 r j Fig. 2 is-a side elevation of the device in itsextended position, the same being partially broken away and shownin section to more clearly 'illu'strate the construction thereof. a M a Fig. 3 is a view illustrating the hood and screen detachedfrom the projectingapparatus-and in their folded or collapsed poautomatic stereopticon and 6 is a casing in which is enclosed the mechanism for operating the same. Detachably fastened y to the casing 6 is a supporting frame 7 which 1s provided with angles 8 upon opposite sides thereof, adapted to engage hooks 9 provided upon the front side of the casing. The supporting frame 7 isprovided with an opening 10 through which a lens casing 11 which constitutes a portion of the projectmg instrumentalities of the stereopticon may extend. I I

A second frame 12 preferably rectangular in form, is located at any desired distance in advance of the projecting instrumentalities 5 and is held in a vertical position by a plurality of supporting members 13, which are detachably fastened to the supporting frame 7 by thumb screws 1 1. The frame 12 is provided with an opening 15 and is preferably constructed in two parts 16' and 17, between which is located a screen18 whichis composed preferably of a semi-transparent material such as tracing-cloth orground glass. The screen 18 extends across theopening 15 and is adapted to intercept the rays of light thrown by the stereopticon and reproduce upon a larger scale a picture ap pearing upon a lantern slide which is located within the stereopticon.

Extending around the opening 15 of the screen frame 12, and projecting laterally therefrom is a flange 19 to which is'secured one end of a hood20, constructed of flexible non-light penetrating material such as leather or black cloth. The other end of the hood 20 is attached to the supporting frame 7 thereby enclosing entirely the rays of light in their passage from the end of the lens casing 11 to the screen 18. The hood 20 preferably tapers from the screen frame 1 toward thesupporting frame 7 The supporting members 13 which simultaneously support the screen frame 12 and hold the hood 20 in its extended position are each preferably constructed of a pair of bars 21 and 22 permanently hinged together at 23. To stiffen the supporting members 13 and prevent the bars 21 and 22 from sagging at the hinge23, the .bars- 21 are ex- I tended beyond said hinge 23,and their endsv detachably secured to the bars 22 by thumb screws 24. Theopposite ends of the bars 22 from the hinges 23'are detachably fastened to the supporting frame '7 by the thumb screws 14 as previously stated. The opposite ends of the bars 21 from those which are fastened by the thumb screws 24 are pivotally andpermanently attached at 25 to angle brackets 26 which in turn are fastened to the screen frame 12.

In order that the hood 20 and screen'frame" 12 may be still further rigidly supported, a pair of braces 27 are also provided, each brace being permanently and pivotally attached at its lower end at 28 to the lower end of the supporting frame 7 and detach ably fastened at its upper end to one of the lower bars 21 by a thumb screw 29.

When set up and ready for use, the various parts constituting the device are all in the positions illustrated in Figures 1 and 2 and the rays of light projected by the stereopticon are enclosed by the hood 20 and intercepted by the screen 18 upon which the picture is visible. When not in use and it is desirable to have the device occupy as small a space as possible, the various parts are disconnected as follows:

All of the thumb screws 14;, 24 and 29 are removed, thereby disconnecting the bars 22 from the supporting frame 7, the braces 27 from the bars 21 and loosening. the end of the bars 21 from the bars 22. The braces 27 are then swung back upon their pivots 28 against the supporting frame 7 the bars 22 folded back upon their hinges 23 to a position at one side of the bars 21, and the bars 21 carrying the bars 22 are -then swung upon their pivots 25 against the screen frame 12. The supporting frame 7 and screen frame 12 are then brought together and the device assumes the position illustrated in Figure 3, the hood 2O collapsing and folding between said frames. The hood 2O always remains attached at its opposite ends to the frames 7 and 12.

It is evident that the hood 20 may be of any length and the screen 18 of any size, according to the size of the picture which it is desired to exhibit upon said screen.

Having thus described my invention, what I claim and desire by Letters Patent to secure is:

'1. A 'device of the character described having, in combination, a collapsible hood, a frame located atone end of said hood, a screen located in said frame, and a plurality of collapsible members adapted to simultaneously support said frame and hold said hood against collapse and in its extended position.

2. A device of the character described having, in combination, a collapsible hood, a frame located at one end of said hood, a screen located in said frame, and a plurality of collapsible members adapted to simultaneously support said frame and hold said hood against collapse and in its extended position, said collapsible members being constructed in two parts, said parts being hinged together and locked in alignment with each other.

3. A device of the character described having, in combination, a collapsible hood, a screen frame. located at one end of said hood, a screen located in said frame, a supporting frame located at the other end of said hood, and a plurality of members pivotally attachedto said screen frame, detchably secured to said supporting frame, and adapted to simultaneously support said screen frame and hold said hood against collapse and in its extended position.

4. A device of the character described having, in combination, a collapsible hood,

supporting members eachcomprising. a'pair I of bars hinged together midway between said frames. I

5. A deviceof the character described having, in combination, acollapsible hood, a screen frame located atone end of said hood, a screen located insaid frame, a supporting frame located at the other end of said hood, and a plurality of members pivotally attachedto said screen frame, detachably secured to said supporting frame, and adapted to simultaneously support said screen frame and hold said hood against collapse and in its extended position, said supporting members each comprising a pair of bars hinged together midway between said frames, and means to prevent the sagging of said bars at said hinge.

6. A device of the character described having, incombination, acollapsible hood, a screen frame located at one end of said hood, a screen located in said frame, a sup porting frame located at the other end of said hood, a plurality of members pivotally attached to' saidlscreen frame, detachably secured to said supporting frame, and adapted to simultaneously support said screen frame and hold said hood in its extended position, said supporting members' each comprising a pair of bars hinged together midway between said frames, means to prevent the sagging of said bars at said hinge, and a pair of braces the opposite ends of which are attached to'said supporting frame'gand the lower pair of said supporting members;

7. A device of the character described having, in combination, a collapsible hood a screen frame located at one end of said hood, a screen located in said frame, a supporting frame located at the other end of said hood, a plurality of members pivotally attached to said screen frame, detachably secured to said supporting frame, and adapted to simultaneously support said screen frame and hold said hood in its extended position, said supporting members each comprising a pair of bars hinged together midway between said frames, means to prevent the sagging of said bars at said hinge, and a pair of braces, one end of'each brace being pivoted to said supporting frame and the other end being detachably secured to one of the lower supporting members.

8. A device of the character described having, in combination, a collapsible hood, a frame located at one end of said hood, a screen located in said frame, and a plurality of collapsible members adapted to simulta neously support said frame and hold said hood in its extended position, said collapsible members each comprising a pair of bars having overlapping adjacent ends,said ends each being separately attached to the bar adjacent thereto at a distance from the end of said bar thereby strengtheningthe central portion of said collapsible members.

9. A device ofthe character described having, in combination, a collapsible hood, a frame located at one end of said hood, a screen located in said frame, and a plurality of collapsible members adapted to simultaneously support said frame and hold said hood in its extended position, said collapsible members each comprising a pair of bars having overlapping adjacent ends, one of said ends being pivoted to the bar adjacent thereto and the other of said ends being detachably secured to the bar adjacent thereto. a

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

GEORGE L. W. PALMER. Witnesses:

MARY J. MATHEWS, AsA F. RANDOLPH.

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