Патент USA US2113397код для вставки
April 5, 1938. M. s. CROFT EXHIBiTING AND VIEWING APPARATUS Filed May 22, 1936 2,113,397 2,113,397 Patented Apr. 5, 1938 UNITED STATES PATENT OFFICE 2,113,397 . EXHIBITING AND VIEWING APPARATUS Martin S. Croft, Chicago, Ill. Application May 22, 1936, Serial No. 81,253 3 Claims. (Cl. 88—24) This invention relates to improvements in ex hibiting and viewing apparatus, particularly adapted, though not necessarily limited in its use for exhibiting and viewing transparent slides, and The upper portion of the front wall II is in clined upwardly and backwardly, and is provided with an opening l2, forming a view opening. A ?ange l3 may be provided across the upper por one of the objects of the invention is to provide . tion of the opening, and ?anges It may be pro 5 an improved apparatus of this character, well vided 'along the vertical edges or walls of the adapted for the use of students, for stimulating in the individual student concentration and special attention to the subject under considera 10 tion. The top l5 of the box extending from the por tion of the walljin which the view opening I2 is arranged, is preferably inclined downwardly'to 10 - eifected generally by means of the use of a stere ward the rear wall I6, and if desired, the top 15 may be removable and may be secured in position opticon or lantern inwhich transparent slides have in any desired or suitable manner. been employed, and the subject matter has been projected upon the screen or wall, necessitating Within the box thus formed is a partition H, which extends from the bottom of the view open 15 the use of dark rooms and a special operator for ing l2 rearwardly and preferably downwardly, the apparatus. and terminates a considerable distance short of the rear wall 16 of the box. Heretofore, the study of visual matter has been Furthermore, when such apparatus is used and the subject is projected upon a wall or screen, the student’s mind is distracted for various reasons, 20 from the subject under consideration. It is one of the objects of the present invention to provide an improved apparatus of this char acter by means of the use of which, visual mate rial such as pictures, lantern slides, ?lms, reels, etc., is made available to the individual student or person, without the use of a stereopticon or dark room. A further object is to provide an improved ap paratus of this character which will be simple, durable, light, and compact in construction and arrangement, inexpensive to manufacture, and ef fective and ef?cient in operation. . To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, com bination and arrangement of the several parts, hereinafter more fully described and claimed and 40 opening. shown in the accompanying drawing illustrating this invention, and in which Figure 1 is a vertical sectional view of an ap paratus of this character constructed in accord ance with the principles of this invention. Figure 2 is a right hand end elevation of Fig ure ,1. Figure 3 is a detail, vertical, sectional view taken on line 3-3, Figure 1, on an enlarged scale. Figure 4 is a detail perspective view, on an en larged scale, of the slidevholder, partly broken away. - Referring more particularly to the drawing, the numeral Ill designates a closed box or casing which is constructedof any suitable material and may be of any desired size and con?guration. _ ‘ This partition I‘! extends entirely across the box, and arranged at the inner end of the parti 20 tion is a wall provided with an upright portion l8 and a forwardly and downwardly inclined portion I9. This wall cooperates with the front wall ll of the box and the partition H to form a lamp chamber 20 in which a suitable lamp 2| is ar 25 ranged. In order to provide access to the lamp, a por tion 22 of one of the walls of the box may be re movable to constitute a door or closure for an 30 opening which constitutes an entrance to the chamber 20, whereby access may be had to the lamp. In the inclined portion I! of the wall of the chamber is an opening 23 of any desired size, and 35 arranged adjacent this opening are supports or guides 24 for the reception of a screen 25, prefer ably of ground glass. ' Supported by the portion I9 of the wall on the other side thereof and adjacent the said opening 40 23, are guides 26 for the reception of a slide in which the picture or material to be exhibited is held. This slide preferably comprises a frame formed of top and bottom channel members 21 and an end member 28, the frame being shaped 45 to form an opening 29. The other end of the frame is open as‘ at 30, and projecting beyond this opening and in the same‘plane as one face of the frame, is an extension 3i which is prefer ably solid and is of any desired length. The free end of the extension 3| may be shaped as at 32 to form a handle by means of which the slide may be gripped. The matter 33 to be viewed is placed within the frame so as to extend across the opening 29, and 55 2 2,113,397 will be held in position by means of the ?anges 21 and the and member 28. _ In the side wall of the box there is provided an opening 34 of a size to permit the slide or frame :1 to be inserted into the box and to be positioned within the guides 26. The matter 33, to be viewed is positioned in the slide so that when the slide is placed in position in the guides 26, it will be on the side of the 10 ground glass or screen 25 opposite to the side on which the lamp 2| is arranged and will be dis posed in close proximity to the screen. The extension 3| on the slide is of such a length that when the slide is in position, the end of the extension will project beyond the box so as to provide a handle by means of which the slide may be manipulated. It will thus be seen that the slide may be in serted into and removed from the box through the opening 34. Arranged in proximity to the wall I 6 of the box is a holder 34 having an opening 35 therein of any desired size and con?guration, and this hold er is adapted to receive and hold a concaved re ?ector 36, and which re?ector is preferably a mirror, although any other concaved re?ector suitable for the purpose may be employed. The re?ector is held in position by means of its edges resting behind suitable ?anges or sup ports 31 on the frame. The frame is mounted upon a slide 38 and the slide in turn is mounted to move upon a support 39, which support preferably inclinesdownwardly from the front to the rear thereof. The re?ector 36 is positioned at such an angle that a perfect image will be viewed through the view opening of the box. The slide 38 may be formed of any suitable material, but is preferably formed of sheet ma 40 terial of a width slightly less than the width of the frame or holder 34. The lateral edges of the slide are preferably bent inwardly as at 40 to form channels which overlap the edges 4| of the supports 39. These supports 39 are preferably formedof 'sheet material and are secured in po- , sition in any suitable manner, but are arranged length between the re?ector and the object may be obtained. , ' Any suitable means may be provided for vlimit ing the movement of the slide 38 toward the ob ject. A suitable and efficient device comprises a member 41 secured within the path of the move ment of the forward edge of the slide. This member 41 may be of a ?exible or resilient nature so that it may be de?ected and maintained in its de?ected position to permit of the installa tion or removal of the slide 38. . The opening 35 in the holder 34 for the re- ' ?ector may be of any desired con?guration and of any desired size. The device thus provided will be of a simple, durable and light construction, so that the same may be readily transported, and the re?ector 36 is so positioned with respect to the object being viewed that the rays of light from the lamp 2| passing through the object being viewed will be 20 directed against the re?ector, and then re?ected through the view opening I2. When it is desired to change the object 33, the slide containing the same may be drawn out through the side of the box and either a new slide 25 interchanged therewith or the object 33 may be removed and a new one substituted therefor. With this improvement it will be manifest that visual material is made available for the individ ual student and the apparatus will stimulate con 30 centration and attention of the student, so that his attention will not be diverted during ‘he time of study of the object, and furthermore, the use of dark rooms and expensive projecting appara tus, heretofore used for this purpose, will be dis 35 pensed with. 4 While the preferred form of the invention has been herein shown and described, it is to be un derstood that various changes may be made in the details of construction and in the combina 40 tion and arrangement of the several parts, with in the scope of the claims, without departing from the spirit of this invention. What is claimed as new is:-— 1. A viewing and exhibiting apparatus em bodying a housing having substantially vertical 45 uprightly with a portion of the top thereof bent front and rear walls, a portion of the front wall inwardly as at 42 towards each other, and then ~ extending above the rear wall and inclined back outwardly to form outwardly opening channels wardly. in a general direction towards said rear so that the edges or channel 40 of the slide will wall, a view opening in said portion of the front receive the edges 4| of the uprights 39, thereby wall, a downwardly inclined partition in the 50 providing a connecting means between the slide housing extending from‘ the base of said view and the supports, which will permit of the slide opening toward and terminating a substantial to be freely moved upon the supports to any de distance short of the rear wall, an upright wall sired position, and so that a predetermined focal depending below the end of said partition, a length may be obtained and maintained between screen supported by and forming a part of said 55 the reflector 36 and the object 33 to be viewed. upright wall and cooperating with said partition Any suitable means may be provided for mov to form a lamp chamber, a lamp in said chamber, ing the slide 38 upon its support, but a simple a curved re?ector in the housing, said re?ector 60 and e?icient means embodies a plurality of rack having a ?xed angle of inclination, and means members 43 secured to the bottom of the slide 38 mounting said re?ector for bodily movement to 60 and spaced laterally from each other. ‘A shaft ' ward and away from said screen, while the angle 44 passes through the supports 39 and the side of inclination of the re?ector remains substan~ walls of the box, and one end thereof extends tially constant. beyond the box and is provided with a hand op 2. A viewing and exhibiting apparatus em 65 erating wheel or grip 45 by means of which the. .. bodying a housing having substantially vertical shaft 44 may be rotated. Secured to the shaft 44 for rotation therewith are gear wheels 46, one for each of the racks 43 and which mesh with the respective racks. It will therefore be seen that by rotating the shaft 44 by means of the handle or wheel 45, the slide 38 together with the holder 34 and the re ?ector 36 may be moved toward and away from front ‘aiid'rear walls, a portion of the front wall extending above the rear wall and inclined back wardly in a general direction towards said-rear wall, a view opening in said portion of the front 70 wall, a downwardly inclined partition in the housing extending from the base of said view opening toward and terminating a substantial distance short of the rear wall, an upright wall depending below the end of said partition, a 75 the object to be viewed, so that the proper focal 75 3 2,118,897 screen supported by and forming a part of said upright wall and cooperating with said partition toward and terminating considerably short 01' the opposite wall, a partition extending down to form a lamp chamber, a lamp in said cham ber, a curved re?ector in the housing, said re ?ector having a ?xed angle of inclination, means mounting said re?ector for bodily movement to ward and away from said screen, while the angle of inclination of the re?ector remains substan tially constant,'and a stop for limiting the move 10 ment of said re?ector toward said screen. 3. An exhibiting and viewing apparatus em bodying a housing having upright front and rear walls and provided with a view opening in one of said walls, a concaved re?ector having a ?xed 15 angle of inclination and disposed in. alinement with said view opening, a partition extending wardly from the free end ‘of the ?rst said parti tion to the base of said housing, a window in the downwardly extended partition, a translucent screen in said window, said screen being dis posed in front of said curved re?ector, said screen and the said downwardly extended partition co operating with that wall of said housing in which from the last said wall below said view opening, the view opening is located, to form therewith 10 a lamp chamber, and means mounting said curved re?ector for bodily movement toward and away from the said screen and the said view opening, while the angle of inclination of the curved re?ector in relation to the .view opening 15 remains constant. ' ' MARTIN S. CROFT.