US2098311A

US2098311A - Projecting apparatus

Info

Publication number: US2098311A
Application number: US62726A
Authority: US
Inventors: Edwin C Schattschneider
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-02-07
Filing date: 1936-02-07
Publication date: 1937-11-09
Anticipated expiration: 1954-11-09

Description

Patented Nov. 9, 1937 I- A UNITED STATES PATENT OFFICE K v y PitoJEcTmG APPARATUS I l Edwin ci sohetzsehneiaer, weet Allis,A wie.

u Application February v, 193s, serial No. 62,126.

' 9 cieims (ci. iss-24) This invention relates to e projecting aptreted 'iight rene,v and in which the silhouette paratus. is produced and light is reflected back onto the Objects of this invention are to provide a novel front face of the object so as to illuminate the form of projecting apparatus which .is so con- Vfront face and allowit to be simultaneously prostructed that small objects, such for example as jected onto the silhouette, Y the movement of a watch, may be projected onto An embodiment of the invention is shown in a screen vand may be very much enlarged while the accompanying gures, in which: still retaining good detail and good illumination, Figure 1 is a side elevation or the device with which will project a sharp silhouette of the object a. part in section and with parts broken away.-

and at the same time will project onto the sil- Figure 2 is a detail of a further form that the lo houette the front face of the object, such for exreiiecting' mirror may take from that shown in ample as the front face of the' movement of a Figure 1;

` Watch, with the Darts in theil' actual colors. Y Figure 3 is a face view of the movement of a In greater detail, objects 0f this invention are watch showing how it is held in place lby a clamp.

li to provide-a projecting apparatus which may be Referring to the drawing, it will be seen that l5V used t0 PrOleCt 8 very much enlarged silhouette the device comprises a projecting lantern i havf and SuDerimDOSed image 0f a Small Object, Sueh ing a source of light, such as the lamp 2, and fOr exemple 8S the movement 0f a watch, with the provided with an adjustable projecting cell 3, V A- parte ShOWu actually in mOUOn 0I! the Screen in such as the condensing lenses shown at 4 and 5. 29 sharp. outline and in their true colors, so that a It also is preferable to provide a water cell 6 20 group of people, as for instance a class in watchfor removing heat, such cell being supplied with making or a prospective customer, may be shown flowing water through the pipe 'l from any suitl the device in such size as to be easily examined in able source and discharging from the pipeV 8 in the detail, and, on the other hand, while it is actuusual manner. The condensing lenses or projectl ally in operation, the apparatus also lling a ing portion of the lantern is preferablyadjust- 25 heretofore unfulfilled need in lthat it can show able in the usual manner. The lantern is a customer where the defect lies in a watch that mounted upon a solid base 9 which is provided he m8? bring in fOr repi- F01' eXS-mple. he with some form of guide, such for instance asthe could be shown a cracked jewel or a broken rod In, carried by end supportsll.

30 balance staff or other parts ofthe watch that may An object holder, a reecting mirror and a 30 be, found defective. OI' in teaching Watchmakprojector or projecting cell are eachV adjustably ing, the entire watch may be Shown in the very mounted upon the guide in. The object holder much enlarged projection or else various portions may comprise 'a buse i2 slidabiy mounted on may be separately shown as desired.- the guide i0 and provided with a thumb screw In general, lthis invention has for 'its object or set screw I3 so that it may be locked in place. 35

"l a projecting apparatus which retains all of the A standard H may project upwardly therefrom sharpness oi the silhouette, but nevertheless does and may carry a clamp I5 or any suitable type not give a black, blank silhouette but gives the adapted to receive the object, such as the movesilhouette with the parts iilled out within the nient I6 of a watch. This clamp l5 is adjustable 49 outline of the silhouette. as it is carried by a rod I1 slidably mounted in 40 Further objects are to provide a projecting thestandard Il and locked in place by the set apparatus having the characteristics hereinscrew or thumb screw I8. above outlined which nevertheless may be used The projecting cell or projector is indicated to project an image of .anobject such for exat I9 and is provided with a base member 2li y ample as the movement of a watch, vin actual slidably mounted on the guide l0 and locked in i operation without requiring a dark room but lin place by the thumb screw or set screw 2|. This -full daylight upon what may be called a daylight .projector is adjustable and has the usual series A screen, for example, sc thatan entire-class ora of lenses. It may be oi a standard type and is large groupof people may simultaneously see the adapted to project onto a screen 22.

- .movement in actual operation and the various Between the projector-'I8 and the object I6 a 50 Vparts pointed out andA explained to the entire Areecting mirror` 23 is provided and is carried #fclass, the projecting apparatus being so conby a basemember 24 slldabl upon the'guidel structed and arranged that the object employed and provided with a thumb screw or set screw 25.

-ior exhibition is placed in a relativelv'concen- This mirror is provided with a central aperture 26 tern, and additionally that part of the convergthrough which the light may pass from adjacent the outside margins of the object I6, but nevertheless the silhouette of the object is not interfered with, the mirror serving the purpose of illuminating the front face of the object. However, the mirror 23 reiiects light back onto the face of the object and consequently the image of the object is superimposed on the silhouette and in the actual colors of the object. If, for instance, the object is the movement of a watch as indicated in Figure 3, thesilhouette of the movement is thrown upon the screen 22 and superimposed on the silhouette is an actual image in colors of the different portions of the movement due to the illumination produced by the reilected light from the mirror 23.

In displaying the movement of a watch, it is possible to show the full movement at once and in operation and a very vivid picture is produced. This picture may be made as large as desired, for

example many feet in diameter if it is so desired.

The screen 22 may be either an opaque screen especially designed for daylight projecting, or it may be a translucent screen so that it can be vviewed from the opposite side.

It is preferable to have the light rays converge,A

as indicated in Figure 1, so that a relatively concentrated light beam is cast on the watch and' a ring of light is also concentrated on the reecting mirror 23, such light being reflected back onto the face of the object.

'I'he mirror may be concave, as shown in Figure 1, if desired or it may take other shapes. For example, as shown in Figure 2, a nat mirror 21 may be employed and is provided with an aperture 28 in the same manner as the mirror 23.

'Ihese diierent types of mirrors are merely illustrative of different types that may be employed. If desired, a segmental mirror could be used, though it is preferable to have a full mirror.

The object producing the silhouette is placed at a point of light concentration instead of being placed closely adjacent the projecting laning beam surrounding the object which passes by the object is not wasted but is caught by the reflecting mirror and thrown back upon the face of the object. In this manner a brilliantly illurninated picture is formed with the silhouette giv ing it a sharp, precise outline.

In teaching a class in watchmaking this apparatus revolutionizes the teaching practice inasmuch as heretofore it was possible for only one student at a time to examine through a magnifying glass the particular portion of a watch under discussion, and students had to successively have that portion of the watch explained to them. With this invention the enlarged silhouetteand the image projected thereon is shown to the entire class at once and the particular part may be pointed out with ease to the entire class. Also it is possible, as described hereinabove, to see the watch in actual operation. Y .f

On the other hand, a jeweler selling a watch to a customer can mount the movement of the watch in the apparatus and project it on the screen and explain its parts or particular features to the prospective customer. On the other hand, if a repairman has a watch brought to him', he may mount the movement, project the silhouette with the image thereon, and point out to the .customer the particular jewel or portion that isbroken and that needs repair.

This invention, therefore, for the first time places in the hands of a jeweler an apparatus by which he can remove any doubt in the mind of the patron by actually showing him'the defective portion and showing him what repairs are actually needed in the watch.

It is to be understood, of course, that parts of the watch may be singly mounted and their silhouette with the image superimposed projected on the screen.

Further it is to be understood that although the invention is admirably adapted to the display of watches, :nevertheless it is applicable to many other objects.

It will be seen that a novel projecting apparatus has been provided which has the advantages not only of opaque projection, that is, from the face vof the object, but also has the advantage of a silhouette projection which gives extreme sharpness. This invention, therefore, provides a device which will project a sharp silhouette of an object and will superimpose on this silhouette the image of the object.

Although this invention has been described in considerable detail; it is to be understood thatsuch description is intended as illustrative rather than limiting, as the invention may be variously embodied and is to be interpreted as claimed.

I claim:

1. A projecting apparatus comprising a screen, a projector, a source of light located on the other side of said projector from said screen, an object holder located between said projector and said source of light and adapted to hold an object, said object directly obstructing a portion of the beam of light from said source, whereby a silhouette of said object will be produced upon said screen, and a mirror located between said object holder and said projector for reecting light from said source of light upon the front face of said l object, said mirror having a cut away portion so that the silhouette of said object will not be obstructed by the mirror, said projector superimposing an image of said object upon the silhouette.

2. A projecting apparatus comprising a screen,l

a projector, a source of light located on the other side of said projector from said screen, an object holder located between said projector and said source of light and adapted to hold an object, said object directly obstructing a portion of the beam of light from said source, whereby a silhouette of said object will be produced upon said screen, said object holder being adjustable towards and from said projector, and a mirror located forwardly of said object holder with reference to said screen for reflecting light from said source of light upon the forward face of said object, said mirror having a clear central portion tolallow the silhouette of the object to pass therethrough without obstruction by the edges of the mirror, whereby an image of said object will be vof the beam of light from said source, whereby a silhouette of said object will be produced upon said screen, said object holder being horizontally and vertically adjustable, and a mirror located forwardly of said object holder with reference to said screen for reecting light from said source of light upon the forward face of said object, said mirror having a clear central portion to allow the silhouette of the obj ect to pass therethrough with out obstruction by the edges of the mirror, whereby an image of saidobject will be superimposed upon the silhouette.

' 4. A projecting apparatus comprising a screen. a source of light, a projector between said screen and said source of light, an object holder between said projector and said source of light, an object held by said object holder and having a rear face directly illuminated by said source of light, said source of light projecting a. beam of light against the back of said object and around said object,

a mirror between said projector and said source of light for reflecting that portion of the beam oi light 'which passes outside of the outline of said object back upon the iront face of the object, said mirror having an aperture therethrough in line with the axis of said projector, and means between said 'source of-light and said object for causing convergence of the light from said source.l

5. A projecting apparatus comprising a screen, a. source of light, a projector between said screen and said source of light, an object holder between said projector and said source of light, an object held by said object holder and having its rear vface directly illuminated by said source of light,

said source of light projecting a beam of light against the back of said object and around said object, a mirror between said projector and said object holder, said mirror reecting that portion of the beam of light which passes outside of the outline of said object back upon the front face of said object, said mirror having an aperture therethrough in line with the axis of said projector, and means between said source of light and said object holder for causing convergence of the light from said source, said means being adjustable whereby the degree of convergence may be adjusted. l

6. A projecting apparatus comprising a base, a light source carried by said base, a projector adjustable on said-base towards and from said light source, an object holder adjustably carried by said base and located between said source of light and said projector, an objectheld by said object holder and having its rear face directly illuminated by said source of light, said source of light projecting a beam of light against the back of said object and around vsaid object, and

a mirror adjustably carried by said base and having an aperture therethroughand located between said object holder and said projector, said mirror reecting that portion of ythe beam of light which passes outside of the outline of said object back upon the iront face of said object, the aperture of said mirror being in line with the axis of said projector. A

7. A projecting apparatus comprising a light source, a projector adjustable towards and from said light source, an object holder adjustable-towards and from said light source and located between said source of light and said projector, an

object held by said object holder and having its rear face directly illuminated by said source of light, said source of light projecting a beam of light against the back of said object and around said object, a mirror having an aperture therethrough and located between said object holder and said projector, said mirror reflecting that portion of the beam of light which passes outside of the outline of said object back'upon the front tace of said object, the aperture of said mirror being in line with the axis of said projector, and means between said object holder and said source of light for causing convergence of the light from said source of light.

8.y A projecting apparatus for projecting a silhouette of an object upon a screen and for pro jecting an illuminated tace view of the object upon the silhouette, said projecting apparatus comprising a screen, a source of light, means for projecting a beam of light from said source, a projector between said source of light and said screen, an object holder between said projector and said source of light, an object held by said object holder and having its rear face directed towards said source of light and having its margins located within the beam of light from said source of light, said object obstructing a portion of the beam of light, said beam of light extending beyond the marginal portion of said object, and a mirror located between said projectorand said object for reecting that portion of the beam of light which passes beyond the object back upon the front i'ace of the object, said mirror having a clear central portion to allow the silhouette of said object to pass therethrough without obstruction by the edges of the mirror, said projector projecting both the silhouette and the illuminated face thereof in superimposed relation 'upon said Screen.

9. A projecting apparatus for projecting a silhouette of an object upon a screen and for projecting an illuminated face view of the object object holder and having its rear face directed towards said source of light and having its margins located within the beam of light from said source of light, said object obstructing a portion of the beam of light, said beam of light extending beyoud the marginal portion of said object, ,and a' mirror located between said projector and said object for reflecting that portionof the beam of light which passes beyond the object back upon the iront face of the object, said mirror having an aperture therethrough for allowing thesil-A houette of the object to be projected through 'said aperture, said projector projecting both the `silhouette and theiiluminated tace thereof in superimposed relation upon said screen.

EDWIN C. SCHATISCHNEI'DER.