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Publication numberUS2644935 A
Publication typeGrant
Publication dateJul 7, 1953
Filing dateApr 28, 1950
Priority dateApr 28, 1950
Publication numberUS 2644935 A, US 2644935A, US-A-2644935, US2644935 A, US2644935A
InventorsMax H Greenwald
Original AssigneeRichmond Products Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Illuminated paging device
US 2644935 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Patented July 7, 1953 ILLUMINATED PAGING DEVICE Max H. Greenwald, Cleveland, Ohio,assignor, by

direct and mesne assignments, to The Richmond Products Company, Cleveland, Ohio, a

corporation of Ohio Application April28, 1950, Serial No. 158,823

The present invention relates to an illuminated device having particular utility for use as a paging device in darkened theatres and auditoriums and the like.

As is well known, whenever large groups of people attend a performance, as in an auditorium or a theatre, there are always occasions during the performance when it is necessary to contact some person in the audience to deliver an im-- portant or emergency message to him. This occurs most frequently in movie theatres where it may be necessary to inform an adult that he or she is urgently needed at home, ,or to inform a physician that he has an emergency. call, or to in form a child that his parents are looking for him,

or to inform a person that his automobile must be moved, or like situations.

It is present practice when such situations arise in darkened movie theatres to do generally one of two things; either the person wanted is pagedtby vide a registration book for persons, such as physicians, who expect to be called, in which book the seating location of the physician is noted so that he can be found when necessary. However, this procedure applies only to those who would nor-' mally expect to be called and is of no value in the great majority of cases, where thecalls are unexpected. I I

It is the primary objectlof my invention to provide means for contacting a member of theaudience, which means shall not unduly disturb or interfere with the entertainment being oifered.

Another object of my invention is to provide 2 Claims. ('01.. 340- 321) ofthis specification, and inwhich are employed to designate like parts throughout the same, j i

Fig. 1 is a front elevation of a paging'device embodying the features of my invention.

Fig. 2 is an end elevation of the device shown in Fig.1, as viewed from the right side of Fig.1.

Fig. 3 is a vertical "cross-section taken as indicated by line 3-3 of Fig.- 1.

Fig. 4 is afragmentary vertical cross-section taken as indicated by line 4-4 of Fig. 2. v

Fig. 5 is a fragmentary horizontal cross section taken as indicated by line55 of Fig. 1.

Fig. 6 is'a frontelevation ,of a m'odified'form of paging device. I

Fig. 7 is an end elevation of the device shown in Fig. 6, as viewed from the right side of Fi'g.'*6.

Fig. 81s a vertical cross-sectional view taken on line3-3 ofFig.6.

Fig. 9 is a horizontal cross-sectional 'view taken on line 9 9 of Fig. 6, and v i Fig. 10 is a fragmentary detail of thedisplay panel used in the embodiment ofFig. 6.

Referring more particularly to Figs. 1-5 of the drawings, the'device is seen to comprise two end plates land 2 between which is secureda uni tary hollowbody 3 which is of oval-shaped crosssection. The body 3 consists of two parts, a transparent or translucent upper display portion :4 and an opaque arcuate lowerportion 5, thejtwo parts 4 and 5 being cemented or bonded form the body. The parts 4 and 5 are together 'to conveniently formed of a synthetic resin or plastic material, and the upperportionl is preferablya frosted or-white translucent material, whereas the lower portion may be black. The upper portion! 'couldbe glass but inasmuch as'the synthetic resin is more readsuch means in the form of a portable, illuminated device which can readilybe carried by an usher.

Still another object of my invention is to provide such a paging device which lends itself. readily to a variety of individual messages;

A further object of my invention to provide a device of the character described which is light in weight, compact in appearance, and which consists of a minimum of parts.

Other objects and advantages of the invention will be apparent during ing description.

In the accompanying drawings, forming a part ily workable and far'less fragile, thelatter is preferred.

Eachof the end plates l and 2 has a thickened center portion or embossment 6 formed thereon which conforms in contour to the inner periphery of the body 3 and extends into the body.3 so as to the course of the follow- 1 position the body properly'as well as to reinforceit.

a A metallic tubular battery case 1 containing a I plurality of dry cells 8 is contained within the arcuate lower portion 5 of the body land a longitudinally extending rod 9 is secured tosaid battery,

, plates 1 and 2'.

'Also mounted onthe battery case I, and secured like numerals i thereto as by soldering, are two or more bulb sockets I2 having suitable supporting portions I3 which serve to electrically connect one terminal of the socket to the battery case. Each of the sockets I2 is also provided with a laterally extending terminal lug I4, the respective terminal lugs I4 being electrically connected by means of an insulated conductor wire I5. Bulbs I6 of the flashlight type are threadedly secured in the sockets I 2.

Within the battery case 1, adjacent one end thereof, is secured a coil spring II the free end of which bears against and makes electrical contact with one terminal l8 f the series of dry cells 8. The action of the spring I! also serves to urge the other terminal I3 of the series of cells 8 into electrical contact with one terminal button 20 of a push-button switch 2| which is mounted on the end plate I and secured thereto by means of a ring nut 22.

The other terminal button 23 of the switch 2| is spaced from the switch and is secured to the inner face of the end plate I and electrically connected to the switch by a conductor 24. The terminal 23 is so located as to be in alignment with a resilient copper contact leaf 25 which is secured to the terminal lug I4 of the nearest bulb socket I2. The contact leaf 25 yieldably presses against the terminal button 23 to complete the electrical circuit to the bulbs IS.

The entire unit is fastened together by means of acorn nuts 28 which threadedly engage the projecting ends II] of the rod 9.

It will be apparent that when the switch 2I is closed, the bulbs l6, which are connected in parallel to the series of dry cells 8, will be energized and will light up. The illumination from the bulbs will be concealed by the opaque portion 0f the body 3 and will diffuse and be visible through the exposed portions of the translucent part 4 of the body.

In order to utilize the device in the manner hereinbefore mentioned, letters ornumerals such as those designated L may be secured to or imprinted upon theportion 4 of the body 3. These letters may be'm'ade a permanent part of the portion 4 as. by painting them on, as the word Calling 'would generally not be changed. However, there are available letters and numerals in various sizes which are formed of plastic sheet material coated with a pressure-sensitive adhesive. These letters will adhere to any smooth surface and are readily removable or changeable, therefore, I prefer to use such removable letters rather than using painted lettering or the like.

The identification such as the name Joe Smith may be written on the body portion 4 by means of crayon as indicated at W, such crayon being easily erased from the surface when it is desired to write another name. Instead of using crayon, however, I prefer to use the removable letters heretofore referred to as they are neater in appearance and are more legible than ordinary writing with crayon.

Thus, if Mr. Joe Smith were wanted, his name would be placed on the paging device, or if it were desired to locate the owner of a car bearing license number LN 471, such license identification would be Written or formed on the device. Both sides of the display portion 4 would carry the same message so that when an usher carries the illuminated device up a theatre aisle, persons both to the right and to the left of him will be able to read the message.

The illumination'given by the flashlight bulbs is sufficient to makes the message stand out and 4 be easily visible and readable, yet it is not too bright so as to disturb the audience.

In Figs. 6 to 10 of the drawings, I have shown a modified form of paging device in which I utilize an edge-wise illuminated display panel 30. The panel may be formed of glass, but I prefer that it be formed of a -clear, transparent synthetic resin such as Lucite.

The panel 30 is supported between two end plates 3| and 32 and its bottom edge 33 is concealed within a hollow body portion 34 which also is supported between the end plates 3| and 32.

The body portion 34 may be made of an opaque synthetic resin and is provided with an arcuate laterally offset portion 35 of semi-circular crosssection which is adapted to contain a tubular metallic battery case 35 holding a series of dry cells 31.

The edges 38 and 39 of the body 34 are spaced from each other to define a longitudinally extend slot or opening 40 in the upper portion of the body, which slot is slightly narrower than the thickness of the panel 30. Each of the edges 38 and 39 is curved slightly away from the opening 40 so as to provide a flared entranceway to the slot. Additionally, the edge 38 is recessed at both ends thereof as indicated at M so as to permit the edge 38 to yield or give when the panel 30 is inserted in the slot 40. In the assembled structure, the end plate 3I is removable, but the end plate 32 is preferably cemented to the body 34, therefore the recesses 4I permit some resiliency in what would otherwise be a fairly rigid structure.

Each end plate 3| and 32 is provided with two horizontally spaced vertically extending ribs 42 which serve to support the panel 30 in an upright position and guide it into the slot 40.

Each end plate 3I and 32 is also provided with an embossment 43 which generally conforms in shape to the internal periphery of the body 34. The embossments 43 project into the body 34 and serve to reinforce the body as well as to locate it properly during assembly. Each embossment 43 is provided with a horizontal portion or ledge 44 which is located directly below the panel 30 and serves as a stop or rest for the bottom edge 33 of the panel.

A longitudinally extending rod 45 is secured to the battery case 36 and has threaded ends 46 which project through clearance holes 41 provided in the end plates 3| and 32. The battery case 35 and the end plates are secured together and held in position by acorn nuts 48 which threadedly engage the rod 45.

In one end of the battery case 38 is secured a compression coil spring 49 which bears against and makes electrical contact with one terminal 50 of the series of drycells 31. The spring also urges the other terminal 5| of the series of dry cells into electrical contact with a contact terminal or button 52 which is provided on a pushbutton switch 53 which is mounted on the end plate 3| and secured thereto by means of a ring nut 54.

The other terminal 55 of the switch 53 is spaced from the switch and mounted on the inner surface of the end plate 3|. It is connected electrically to the switch by means of a conductor 56.

Secured to the side of the metallic battery case 36 as by soldering or the like, are a plurality of longitudinally spaced bulb sockets 51 adapted to threadably receive bulbs 58, of the flashlight type. One terminal of the sockets 51 makes electrical connection with the terminal 50 of the dry cells,

31 through the battery case 38. The other termie nals of the respective sockets 51 are connected electrically by means of a conductor wire 59. A resilient copper contact leaf 60 is secured to the terminal of the bulb socket nearest the switch terminal 55 and makes contact with said switch terminal to complete the electrical circuit through the tubes 58.

The bulbs 58 are so located that they will underlie the bottom edge 33 of the panel 30, and it will be apparent that when the switch 53 is closed the bulbs 58, which are connected in parallel to the series of dry cells 31, will be energized and the light will be transmitted through the edge of the panel 30.

In order to increase the effectiveness of the lighting, the lower edge of the panel 30 is provided with a series of arcuate recesses 6| which, by presenting more edge surface to the light source, serve to intensify the illumination of the a corresponding light bulb 58.

It has also been found that if the edges of the I with an opaque tape 62. A heavy coating of paint or the like could be used in lieu of thetape 62.

In utilizing the device, letters L of the adhesive type maybe mounted on the panel to spell out a word such as Calling which would ordinarily be common to all messages which might be put on the paging device.

The particular identification, such as the license number LN 471 of a car which has to be moved, can be written on the face of the panel 30 by means of crayon as indicated at W. This writing can be easily removed or erased and replaced by another message whenever the occasion arises. Instead of crayoning the message onto the panel, it may be made of the same type of letters L which I prefer to use for Calling.

In order that the message be readily visible, I

prefer to put a coating of black paint or the like departing from the spirit of my invention or the scope of the subjoined claims. 7

Having thus described my invention, I claim: 1. In a paging device of the character described, the combinationof a message panel, end

plates for supporting saidpanel, a stay-rod securing said end'plates together, a battery case, said stay rod being secured to said battery case longitudinally thereof and supporting it, an opaque enclosure surrounding said stay-rod on said bate tery case, an electrical light source mounted on said battery case for illuminating said massage panel, and a source of electrical energy contained within said battery case for energizing said light source.

2. In a paging device of the character described,

the combination of a hollow display panel having open ends, said panel having an' upper translucent portion and a lower opaque portion, end plates supporting said panel, said end plates hav-- ing embossments thereon which are slidable into the open ends of said panel, securing means for holding said end plates to said panel, an electrical light sourcecontained within the opaque portion of said panel, and light energizing meainsv contained within said opaque portion of said panel and operatively connected to said light source.


References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,236,647 Alt Aug. 14, 1917 1,241,965 Gunn -Oct. 2, 1917 1,554,469 Thomson Sept. 22, 1925 1,951,431 Meehan Mar. 20, 1934

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1236647 *Aug 14, 1915Aug 14, 1917George AltAnnunciator.
US1241965 *Apr 27, 1915Oct 2, 1917John A GunnSeat-indicator.
US1554469 *Apr 17, 1922Sep 22, 1925Thomson Volney WayneSeat signal
US1951431 *Jun 8, 1931Mar 20, 1934Meehan John PTraffic signal
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2850823 *Aug 19, 1954Sep 9, 1958Display CorpIlluminated signs
US3015900 *Nov 7, 1958Jan 9, 1962Richard F FrinkInternally illuminated sign
US3952437 *Apr 5, 1974Apr 27, 1976Photo Systems, Inc.Picture frame construction
US4340372 *Apr 17, 1980Jul 20, 1982Brassine Robert LEducational aid
US4587755 *Jan 9, 1984May 13, 1986Sunshine Richard BPortable changeable lighted sign
US6347468 *Nov 4, 1999Feb 19, 2002Abdulahi MohamedPortable illuminated sign with changeable messages
US20100147338 *Oct 4, 2006Jun 17, 2010Buesing JohannesDishwasher, in Particular Domestic Dishwasher with a Controllable Operation Display Panel
USD756831Mar 12, 2015May 24, 2016Russell LibbeyIlluminated safety floor sign
U.S. Classification340/321, 40/546, 340/815.53, 40/555
International ClassificationG09F13/18
Cooperative ClassificationG09F13/18
European ClassificationG09F13/18