US3531898A - Portable rostrum - Google Patents

Description

; Oct. 6, 1970 o. D. FACEMIRE 3,531,398

PORTABLE ROSTRUM Original Filed May 25, 1967 4 Sheets-Sheet 1 ODIE D. FACEM/RE (3 & L- INVENTOR.

0. D. FACEMIRE Oct. 6, 1970 PORTABLE ROSTRUM Original Filed May 25, 1967 4 Sheets- Sheet 2 FIG. /0

Oct. 6, 1970 O. D. FACEMIRE PORTABLE ROSTRUM 4 Sheets-Sheet 5 Original Filed May 23, 1967 FIG. 3

FIG. 7/

Oct. 6, 1 970 0. D. FACEMIRE 3,531,898

PORTABLE ROSTRUM Original Filed May 23. 1967 4 Sheets-Sheet 4 United States Patent O US. Cl. 52-6 4 Claims ABSTRACT OF THE DISCLOSURE This invention has to do with a portable rostrum and, more particularly, to apparatus arranged to provide a stage for educational purposes and the like, which stage can be dis-assembled and carried to a remote area and re-erected without difliculty.

This application is a continuation of Ser. No. 640,590, filed May 23, 1967, noW abandoned.

BACKGROUND OF THE INVENTION In the educational and entertainment field, it is often necessary to bring the facilities to the audience, rather than vice versa. Furthermore, a well-constructed and arranged rostrum is a very expensive piece of equipment and it is economically wasteful if it is permanently installed in one place and cannot be dismantled and reerected in another place. This is true, for instance, in the training of Army technicians in that the facilities for teaching may be moved from a building in one section of the United States to a building thousands of miles away. In the past, it was necessary to construct entirely new rostrum facilities at the new location of the school. Even in the case of permanent rostrums, difficulties are experienced because of the impossibility of replacing parts and because of the fact that the floor of the rostrum may become worn. These and other difficulties experienced with the prior art devices have been obviated in a novel manner by the present invention.

It is, therefore, an outstanding object of the invention to provide a portable rostrum which may be easily dismantled and re-erected.

Another object of this invention is the provision of a portable rostrum in which all of the elements are of standard construction and may be readily replaced when broken or worn.

A further object of the present invention is the provision of a portable rostrum which is simple in construction, which is inexpensive to manufacture, and which is capable of a long life of useful service with a minimum of maintenance.

It is another object of the instant invention to provide a portable rostrum in which the floor of the podium can be covered with rug material which may be changed around to minimize wear and which rug elements may be readily replaced without replacing the entire surface of the podium.

A still further object of the invention is the provision of a portable rostrum in which means is provided for suitably supporting projectors and the like yet, wherein all of the elements of the rostrum may be dismantled and stored in a very compact space for shipment.

It is a further object of the invention to provide a portable rostrum in which all of the elements are readily folded into compact packages.

With these and other objects in view, as will be apparent to those skilled in the art, the invention resides in the combination of parts set forth in the specification and covered by the claims appended hereto.

3,531,898 Patented Oct. 6, 1970 "ice In general, the present invention consists of a portable rostrum comprising a podium of rectangular form, two angularly arranged side walls and a rear wall arranged to enclose a trapezoidal portion of the podium, a trapezoidal-shaped roof connecting the upper edges of the walls and overlying the trapezoidal portion of the podium, and a lectern mounted on the said trapezoidal portion of the podium. Furthermore, the side walls are constructed to include projection screens and the rear wall includes a chalk board, while the roof includes light elements and the lectern carries a microphone connected to loud speakers. The projection screens are translucent and a mirror is provided to the rear of the side walls to reflect an image from a projector onto the translucent screen. The projectors are mounted in closets and shelves provided at the rear of the walls and are suitably hidden on occasion. The illuminating elements in the roof are foldable for ease in shipping. A plurality of display boards are slidable on a track across the rear wall to provide for a selection of the particular display board and to provide a closure for a projector shelf located behind that wall. The display boards are adapted to carry indicia which luminesce in the presence of ultraviolet light and the roof is provided with a flange at the forward end overlying the front edge of the podium or stage which carries an ultraviolet source directed toward these display boards. The podium is made up of a plurality of generally rectangular elements, each of which carries a replaceable rug element on its upper surface. The floor elements can be locked together to form any shape of podium desired and can be interchanged.

BRIEF DESCRIPTION OF THE DRAWINGS The character of the invention, however, may be best understood by reference to one of its structural forms, as illustrated by the accompanying drawings, in which:

FIG. 1 is a perspective view of a portable rostrum embodying the principles of the present invention,

FIG. 2 is a vertical sectional view of the rostrum taken on the line IIII of FIG. 1,

FIG. 3 is a horizontal sectional view of the rostrum taken on the line III-III of FIG. 1,

FIG. 4 is a horizontal sectional view of a portion of the rostrum taken on the line IV-IV of FIG. 1,

FIG. 5 is an enlarged View of a portion of the apparatus shown in FIG. 4 showing a projector shelf in open position,

FIG. 6 is the same view as FIG. 5 but with the shelf in collapsed or folded condition,

FIG. 7 is a perspective view of alight element used in the invention, with some of the parts separated for clarity of understanding,

FIG. 8 is an enlarged sectional view of the apparatus taken on the line VIII-VIII of FIG. 1,

FIG. 9 is a perspective view of a floor unit associated with the podium,

FIG. 10 is a sectional view of the unit taken on the line XX of FIG. 9, and

FIG. 11 is a sectional view of on the line XIXI of FIG. 2.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring first to FIGS. 1, 2, and 3, wherein are best shown the general features of the invention, the portable rostrum, indicated generally by the reference numeral 10, is shown as consisting of a generally rectangular podium 11 on which are arranged two angular side walls 12 and 13 and a rear wall 14 which serve to present to the audience a trapezoidal shaped portion of the podium. A roof 15 is mounted across the tops of the side a light source, taken walls 12 and 13 and the rear wall 14 and in general is trapezoidal-shaped to match the portion of the podium exposed to the audience. Mounted on the podium is a lectern 16 having a microphone 17 connected to a loud speaker 18.

As is evident in FIG. 1, the side wall 12 is provided with a translucent projection screen 19 and with a closet 21 having a projector shelf 22 on which is carried an overhead projector 23. The side wall 13 is also provided with a translucent projection screen 24. Mounted on the podium behind the side wall 12 is a mirror 25 and behind the side wall 13 is a mirror 26.

The rear wall 14 is provided with a plurality of display boards 27 slidably mounted on a track 28, the boards in certain positions covering a projector shelf 29 which is located behind the wall 14 and which carries a moving-picture projector 31. Finally, as is best evident in FIG. 2, the roof 15 carries a conventional light source 32 while a flange 33 at the front of the roof carries an ultraviolet light source 34.

Referring now to FIGS. 4, 5, and 6, which best show the features of the projector closet 21 and associated equipment, the closet is provided with a projection shelf 22 which is generally rectangular and which is hingedly attached by hinges 35 to the bottom edge of a back wall 36. This back wall is attached along a vertical edge by means of a hinge 37 to a vertical edge of an opening in the side wall 12. A side panel 38 is attached to the opposite vertical edge of the opening in the wall 12 by means of a hinge 39. Finally, a roof panel 41 is of generally triangular form and is hingedly attached to the upper edge of the side panel 38 by means of a hinge 42. In the open, operative condition of the closet shown in FIG. 5, the projector shelf 22 is half within the closet and half outside and is supported at the outer side by a hinged panel 43. The rear panel 36 carries an electrical box 43 to which all power in the podium arrives and is distributed to various parts thereof. The projector 23 would normally sit on the projector shelf 22. In order to fold the elements together, the rear panel 36 is hinged forwardly into the plane of the wall 12 and the projector shelf 22 folds upwardly against it. The side panel 38 folds toward the plane of the wall 12, while the roof panel folds about its hinges 42 to lie against the side panel. The side panel is provided with a projection aperture 44 through which the image from the projector 23 passes rearwardly to impinge against the mirror 25 on its way to the projection screen 19.

FIG. 7 shows the details of the light source 32. Generally speaking, it consists of a box-like structure adapted to rest on supporting struts of the roof 15. It consists of four generally rectangular metal panels 45, 46, 47, and 48 which are hingedly connected together along their vertical edges so as to fold flat on occasion. The panels 48 and 47 are provided with air louvers to permit the escape of warm air. The cover 49 is a metal plate having a downwardly-extending peripheral flange 51 which fits tightly around the upper edge of the assembled box provided by the panels 45, 46, 47, and 48. On the upper part of the cover are mounted a series of fixture boxes 52 which, on the inside of the cover, carry light bulbs 53. An electrical cord 54 extends away from the cover and is connected seriatim to the fixture boxes 52 to provide electricity for the bulbs. The sides 45 and 46 have lower edges that project slightly below those of the sides 47 and 48 to lock the light source into the structural members forming the ceiling.

Referring now to FIG. 8, it can be seen that the display boards 27 are suspended in the well-known manner for sliding along the track 28. As is evident in FIG. 3, the track extends well beyond the rear wall 14 in back of the side wall 12 to permit the boards to almost disappear from view when carried to their extreme positions along the tracks 28. Behind the rear wall 14 is located the projector shelf 29 on which the projector 31 resides. Extending below the projector shelf 29 is a storage shelf 55; the shelves are suitably connected together by braces 56 and by legs 57 which extend to the floor. The entire assemblage of shelves, braces, and legs can be folded flat against the rear wall 14.

FIGS. 9 and 10 show the details of the units 58 from which the podium 11 is formed. Each unit consists of a rectangular floor resting on a rectangular angleiron frame having at each corner a short leg 61. Fastened to the upper surface of the floor 59 is a rectangular piece of rug material 62 which is approximately the same size as the floor itself. As is evident in FIG. 10, the edge of this rug is held onto the floor by the use of an angle-piece 63, one leg of the angle-piece overlying the edge of the rug element and the other leg extending downwardly along the edge of the floor. Each leg is provided with an adjusting screw 64 having a locking nut 65. The units are held together by clamps, not shown. At each end of the unit in the central portion of its short sides it is provided with a fastening means 66 consisting of a bolt 67 extending through the fioor and having a slotted head which appears in the upper surface of the unit. It also has a lower shaft 68 on which is mounted a finger 69 which is capable of engaging and locking with the frame to lock the floor in place. The floor "59 and the rug element 62 are both removable to permit the clamping and bolting of the frames together and getting them all level before the floors are put back in. This gives the person putting the podium together access to the bolts and clamps which fasten the legs and metal parts together.

The operation of the apparatus will now be readily understood, in View of the above description. First of all, in the assembled form shown in FIG. 1, it is possible for the lecturer or teacher to stand at the lectern 16 and address the audience through the microphone 17 and the loudspeaker 18. In order to show certain educational materials, he may make use of the projector 23 which, in the preferred embodiment, is shown as an overhead projector. The image from this projector is thrown against the mirror 25 and is reflected backwardly against the transulcent screen 19. On occasion he may wish to show moving pictures, in which case he may make use of the projector 131 which throws the image against the mirror 26 from which it is projected onto the rear surface of the translucent screen 24. On occasion he will make use of the display boards 27, some of which have slate surfaces for use with chalk, while others have metal surfaces which are capable of holding magnetic-type indicia or indicia which are responsive to ultraviolet light. For that purpose, the ultraviolet light 34 has its light directed toward the display boards 27 to bring that material into operation. The general area of the podium is illuminated by the light source 32. It will be understood that the roof 15 may be made up of the usual T-cross-section bars which permit the use of acoustical ceiling panels which drop into the horizontal flanges formed by these roof members. The light source 32 would be of a size to occupy two standard ceiling panel squares and the ceiling underlying the unit would be formed of translucent glass so that there would be no open spaces.

The dis-assembly and shipping of the entire unit is relatively easy. The roof is made up of ceiling panels which are easily removed and of structural members which are only bolted together. The light source 32 is dis-assembled by removing the cover 49 and folding the panels 45, 46, 47, and 48 into a flat package. After the projectors 23 and 31 have been removed, their respective shelves and closets can be folded flat against their respective wall members. Each of the side wall members 12 and 13 and the rear wall '14 are separately shipable. The podium 11 is reduced to separate units '58 by unfastening the clamps and it is then only necessary to handle the individual units.

It should be pointed out in connection with the units 58 that, because of the use of the rug element 62, the iioor of the podium is soft and soundproof. There is no noise to interfere with the lecture. As a matter of fact, since the ceiling is formed of acoustical ceiling tiles, and the floor has rug material on it, the sound-absorbing characteristics of the rostrum are quite good. In addition, when the motion picture projector 31 is operating, it is possible to cover the opening in the wall by means of the display boards 27; these boards are also basically formed of a porous acoustical material, so that the mechanical sounds of the projector does not interfere with the sound track of the projector which, incidentally, would provide sound through the loudspeaker 18. However, one of the major problems with providing a podium with rug material is that the podium is apt to be used mostly in the vicinity of the lectern 16 and certain spots become worn more than others. With the present device, it is possible to interchange the units 58 so that all of the units receive even wear. In addition, the removal of a rug unit and the replacement with another is a simple matter of removing the angle-pieces 63 and replacing the rug material. The rug material need not be bound because the edges are securely held under the angle-pieces 63.

It can be-seen, then, that by use of the present invention it is possible to provide a podium which is truly portable in the sense that it can be dis-assembled into parts which are easily handled, which parts are not bulky since all of the elements are constructed to fold flat. It is a simple matter to remove the parts from one location to another. In addition, all of the elements are of the standard type so that it is easy to replace a part which becomes broken or worn. This is particularly true in the case of the units '58 forming the podium which, in the normal course of events, would take the greatest amount of punishment. Also, since each unit is provided with four adjustable legs, it is possible to set up the podium 11 perfectly level before the other elements are attached to it.

It is obvious that minor changes may be made in the form and construction of the invention without departing from the material spirit thereof. It is not, however, desired to confine the invention to the exact form herein shown and described, but it is desired toinclude all such as properly come within the scope claimed.

The invention having been thus described, what is claimed as new and desired to secure by Letters Patent 1s:

1. A wall structure for a rostrum which can be disassembled for transportation, said wall structure comprising a rear wall (14) adapted to be supported on a horizontal floor, a first angular side wall (12) hinged to one end of the rear wall and comprising a translucent screen for still pictures projected upon the rear surface of the screen from behind and to be viewed from in front, a second angular side wall (13) hinged to the other end of the rear Wall and comprising a second translucent screen for motion pictures projected upon the latter from behind, the two side walls diverging from opposite ends of the rear wall while in use so that the still pictures and the motion pictures can be viewed from in front without change of position of the viewer, and the rear wall comprising display boards (27) slidable on guideways (28) into the vacant spaces behind the side walls or into the space between the side walls.

2. The wall structure of claim 1 in which the first angular side wall (12) has a cut-out portion between its translucent screen and its hinged support to receive a shelf (22) for a still picture projector, in combination with a mirror (25) to reflect the still picture images upon the rear side of the translucent screen.

3. The wall structure of claim :1 in which the rear wall (14) has a shelf (29) secured to the back side of it for supporting a motion picture projector, in combination with a mirror (26) to reflect the motion picture images upon the rear side of the second translucent screen.

4. The wall structure of claim 1, in combination with a roof panel (41) hinged to the upper edge of each side wall and adapted to be collapsed therewith for transportation.

References Cited UNITED STATES PATENTS 1,099,748 6/1914 Hopkins 35-63 1,799,304 4/ 1931 Hogan 240-1 1,848,287 3/1932 Waglie 52-70 2,477,923 8/1949 Fitt 178-791 2,685,817 8/1954 Freeman 350-123 2,837,836 6/1958 Morawitz 250-71 X 3,025,757 3/1962 Hillyer et al. 353-76 3,067,843 12/ 1962 Rushton et a1 52-126 3,178,834 4/1965 Dyer et al. 35-63 3,181,203 5/1965 Wenger 52-6 3,271,914 9/1966 Boyett 52-36 3,283,652 11/1966 Busch 352-104 X 3,332,317 7/1967 Peckman et al. 353-44 3,350,792 11/1967 Andersen 35-60 X FOREIGN PATENTS 1,475,402 2/ 1967 France.

406,054 2/ 1934 Great Britain.

OTHER REFERENCES Plug-In Schools-Architectural Forum Magazine, August 1963, pp. 6873.

Unusual Demonstrations-The Welch Physics and Chemistry Digest, vol. 5, No. 3, April 1955, p. 29.

PRICE C. PAW, JR., Primary Examiner US. Cl. X.R.

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