US985068A - Projecting apparatus. - Google Patents

Description

E. SCHNEIDER. 4EROJECTING APPARATUS. APPLIOATION FILED JAN.16, 1907.

985,068. Patented-111111.21, 1911.

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PBOJEGTING APPARATUS.

AHLIOATION FILED JAN.16.1901.

Patented Feb. 21, 1911.

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lUNITED STATES PATNT QFFICE.

A EBERHARD SCHNEIDER, OF NEVI YORK, N. Y.

PROJECTING APPARATUS.

To all whom it may concern.'

j Be it known that l. llnniniaiin Stiiiaixinicii, a citizen of the United States, residing in the city, county, and State of New York, have invented a new and useful improvelnent in ProjectingA pparatus, of which the foilowingis a specification.

This invention relates to projecting apparatusx and morey especially to .projecting aparatus adapted for use in connection. with goth moving-picture exhibiting apparatus and ordinary xed slides showing objects at rest.

The invention contemplates the lprovision of an improved stand on which bot i moving picture apparatus and fixed slides may be suitably supported for the purposes of exhibition, an improved lamp-house and sup-v porting Adevice therefor which is readily `Sh'kftable so that a single lamp may be used fo both the exhibition of moving pictures and the projection of fixed slides, andan improved lens support whereby the accurate positioning of projected pictures on a lield '1l-"may be insured without altering the position of ythe stand bearing the projecting apparatus.

The invention also contemplates other minor improvements which will appear inj.

the course of the following description, in which reference is had t0 the accompanying drawings, wherein corresponding parts are designated by similar characters of reference throughout.

In the drawings: Figure 1 is a general 'view in side elevation of the stand, lamphouse, lens supports, and slide holders of a projecting apparatus embodying the present lnvention, the n'ioving-picture exhibiting apparatus being omitted for the sake of clearness. Fig. 2 is a view iii rear elevation of the lamp-house and adjacent structures.

Fig. 3 is a topplan view of" the structures v Shown in Fig. 1.- witli the exception of the legs or pillars for the stand. liig. 4 is a transverse vertical section through the lamphouse on the line 4-t of Fig. 5. Fig. 5 is .a view of the lamp-house partly in longitudinal-.median section and partly in side elevation. Figs. tl and 7 are detail views showing the mode of connecting the legs with the bed of the stand. Fig. 8 is a detail view showing the huilend/socket adjustment of the lens support.

Specication of Letters Patent.

Application tiled January 16, 1807.

'Patented Feb. 21, 1911. serial No. 352,534. y

ln describing the apparatus. l will first describe the stand. as the other parts of the apparatus are all lsupported thereby, and will tlicn proceed with the description of the o thcr structures forming pars of the invention.

'.llifl stand consists of a bed l which is preferably an aluminum casting longitudinally slotted as shown at 2 and provided with a lstiti'ening web fl on its under side. rlhe stiii'ening web is made. in skeleton form, as shown in Fig. l, and at the ends openings 4 arefornied for the passage o'l clamping bolts 5 by which the legs are secured. The

surface of the web adjacent tov each of the its peripherjr on the inner t'ace so as to obtain firm hold upon a washer ot leather or other suitable material H which is interposed between each leg and the web il. 'l`he legs (l are preferably ot tubular torni and coinposed ot a pluralityy of telcscoping sections. as shown in Fig. i. and the clamping' bolt,I 5 for each pair of legs is preferably provided with a wing nut l) to facilitate the clamping and releasing ot the legs. To limit the angular adjustment of the legs and prevent the possibility of collapse otl the stand in case the legs are set in nearly horizontal position. a notch 10 is forniediii the lower margin of the web adjacent to each of the bolt| holes 4- and a stud 11 on the inner* face of each disk 7 lies in the notch when the. legsI are clamped in placi and limits the angular movement ot' the leg by contact with one end ol the notch. At the rear of the bed l a lateral'extension 12 is provided. as best shown in Fig. -l. and upon this lateral extension is clamped a bracket i3 presenting at the lop a pair oi' ears V14 which ali'ord support y:for a transverse rod lo and having at'. the bottoni an inclined bead or rib it which forms a sortl of guide or track which cooperates with the rod l5 to forni a guide or track for the lamp-house.

The lamp-house is designated generally by l? and is supported by a pair ot ears 1S, through which the rod l5 extends. and a roller 1S) engaging the inclined bead or rib t6 and niounted in a small bracket 2O provided at. the base ot the lamp-house traine. 'lhese supporting devices for the lamp-house Apermit lateral movement of the lamp-house along the rod 1,5 and also permitthelampl dition ot' the lamp without opening the door.

the. operator merely to release the lug trom house to be tilted forward about thel rod 15 t as a center and brought over upon the bead t ot the stand when the brackets for supporting the lenses and slide holders are removed.

VThe details of construction of 'the lamphouse are best shown in Figs. l. 4 and 5. It is constructed principally of sheet metal. but the sheet metal. parts are preferably mounted on a trame Q1 of cast aluminum, otl whichthe bracketv 20 forms an integral part. -it the front the lamp-house is provided with the usual thimble Q2 to form a lens support, and just; behind this thimble within the lamp-house is provided a sliding shutter Q3 which works in vertical guides A at` thesides of the lamp-house. 'Ihis shutter" is provided to cut ott the heat of the. lainp and protect the'lens when a 'picture is notk on the screen, and the shutter-operating devices are ot such character that the shutter can be easilyY and quickly controlled b the operator without introducing ibis' hand within `the lamp-house. .\n arm 25 rigidl)v mounted on a shaft QG extending longitudinally oi the lamp-house near thc top and at one side 'is connected with the shutter by means of a link 27 pivotally attached to the irec end of the arm 25. The shaft 2G is rocked by means ot an arm Q0 mounted at the rear end ot-the shaft and disposed iu a recess formed in the exterior of the lamphonse to receive it. The shaft 2G is provided at its forward end with a collar 30, and a coiled spring lll, disposed between the collar Il() and the trout wall ot the lamphouse, serves to draw the shat't t'orward so as' to insure they engagement otv a lug 3Q on the. head .of the arm "29 in engagement with the rear wall ot the, lamp-house. 'This lug` 32 is ot wedge shape and is adapted 1o enter a notch lil` in the Wall ot the lamp-house when the shutter is raised and the arm is turned into substantially horizontal position, thus securing the shutter in open position. 'lo close t he shutter it is necessary for the notch by giving the arm 2f) a slight.' upward swing, a'lter which the weight ot the shutter will be sufficient to cause it to dcscend to the position shown in Fig. 4. turning the slia'tt Q6 as it descends and swinging the arm Q9 into vertical position.

The lamp-house is provided `with a door 34 in the right side wall to afford ready access to the upper portion of the interior and a rear door 235 ait'ords convenient access to the base ot the lamp-house. Both doors are provided with suitable latches to keep them closed and a central opening 3G in the door ldf'euables. the operator to observe the con- The base of the lamp-house. is preterably curved as shown in the drawings and a sliding bracket 37 for supporting a portion' ot the lamp is mounted ou a rod 3S extending longitudinally of the lamp-house along one side at the top of the curved base. 'This bracket is prevented from tilting by a curved arm which conforms approximately to the curvature of the base and has its free end extended laterally, as shown at Li0, to restfon a ledge vt'ormed therefor. .'*djustment'of the bracket is etl'cetcd l an arm 41 extending through a slot in the lamp-house frame, thus enabling the operator to shift the position ofthe bracket without inserting his hand within the lamp-house.

To attord a dratt'through the latini-house so as to remove products ot combustion and obtain the cleaning eiifect due to the passage ot a current of air, an opening is formed in the top of the lamp-house and a plate 421mm*- ing segmental side wings 423 secured thereto is pirotcd at. the forward end otl thc opening. These sidev wings engage the sidesof -the opening and coiiperatc with the plate 4Q,

to torni a device by which the rcut at the top 'may be varied iu size. The plate 4Q and the side. wings -ttl also serve to form a .sort of tlue by which the current or drafty through the top ot' thc lamp-house is given a rearward as well as upward` direction. The supply ot air to create the dlaftfis admitted at the hase of the lamp-house through a perforated plate -tll forming thelower `section ot the trout wall .of the lauip-. house andthe air so admitted is directed upwardly immediately behind the front--wall b r a batlle plate if. rThe olriect ot this ar-v rangement is to concentrate the draft of air as nearlyas possible at the trontcf the lamp-house where it will hare a cooling ettect upon the trout wall aud upon the leus L mounted in thethiinble 22. thereby-affording a'certain amount ot protection to the,V` leus from the heat developed by the lamp used for projection.

Mounted on the bed l ot. the. stand and 'i adjustable thereon, l have Ishown a pivoted double bracket t5 upon which are supported a slide holder 4G and a water cell 4". the lat- `ter being set to the. side on which the moving picture apparatus is mounted when in .uSe, so as to afford the intlaunnable celluloid film bearing the. moving pictures` a certain amount of protection from the heat ot" the projecting lamp. `Both the slide holder' and the water cell are preferably provided with shields ot the usual type to cutotl? ex= traneous light and also toconcentrate the light trom the. projecting lamp upon 'the field on which the pictures are displayed. Anotherl adjustable bracket -LS is also mountetl on the bed of the stand and this bracket carries an improved lens holder especially adapted tov facilitate the positioning of th/epicture projected trom a slide held in the' slide holder 46. Mounted on the bracket 4S is asupplemental bracket 49 having a. verti-' a Slide holder 4G is provided.

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cal arm which turns in the braleketfi and a horizontal arin on which is mounted a sliding'I collar 50 provided with a set screw. l'he sliding collar 50 has a laterally projecting arm 51 to which a'correspondingly shaped plate is secured by ineens et Vclamping` lscrew' 52.` Between the arm 51 and the` `plate 52A is gripped a ball 53, the arm andthe plete 52 being excaivatedio :torni a socket-to receive the ball. libe ball l' carries la lens-supporting rinof 54 into which a lens 55 is 'threaded' or oltsherwise fastened. The ball-and-socketjoint formed by the arm 51, the corresponding plate, and the hall 5?, afford means whereby the position ot.' the lens 55 maybe very accurately adjusted to insure the focusing o1 the light projected through a slide in the holder 56 on exactly the same field as the light projected through the Water cell 47 and suitable moving` pieture exhibiting' apparatus mounted. in front of the Water cell.-

In the use of the improved apparatus above described, the customary procedure is to mount moving picture exhil'iitiug ap paratus on the bed of the stand in such position thatI light from thc lamp will full on the moving picture hn after passing' through the Water cell, audit-he moving pietures will then be projected on a suitable screen. Then the moving' picture apparatus` is in use the lamp-house occupies the position shown in Fig. il -iiun'iediately behind the Water cell. of the iuov'ing picturesfjcontuined on one reel of film, it is eustomaryzto throw on the screen a picture Jtroni an ordinary slide showing objects at rest, and for this purpose lly following the exhibition of moving' pictures with a picture freni a slide,.thcIat'tcnlion of the audience is kept during the interval required to remore from the moving picture appa-A ratus the film which has been cxhilf/ited and to introduce another film. ln oiwler to make it possible to project. a picture from. a slide on the screen during a change ol films and without the use ot' au additional complete project-ingV apparatus, the lamp-house is inode shiitable lulerally in the manner already described. ecordinglymwhen it is desired -to change the moving picture films and to After the exhibition.

After the is soadjused i enggth :is to bring1 the bed l to the proper ghi; with the legs slzunling at. a slight incline, :ijviproxiinutely as shown. the bed i is then set horizontally o' at the inclination necessary to properly center a poeture on the screen, and finally the other pair of legs il; then brought into position to engage the floor or other structure on which the stand rests, and are secured in this position. The lamp-house is first set behind the Water cell and light is projected through it and thc movingr picture apparatus to insure the proper location oli' the moving pictures n l hei moving pictures having been assured. tlm lamp-house is shifted to the lett and light thrown through the slide holder and the lens lx the light so projected, is not properly distributed on the screen so that the picture presented b'" the slide .in the holder occupies the saine held the moving pictures,I the lens 55 is quickly and accurately adjusted by means of the hall-aml-soclret joint upon which it is supported, and then the parts are securely clamped lo prevent disar rangement.

ilaviug thus described my invention` what l claim as new and desire to secure by Letters lalcnt is:

l. ln apparatus o'l the character specified; (he con'ilaination. with a lamp-house of lamphouse supporting' devicesv upon which ysaid lamp-house is laterally movable, the supporting devices comprising a rod.y members at the iront et the hump-hou through which said rod passes, and a guide below said rod against which the' lower portion of the front the laniji-house presses.

Q. in appeirzitlis of the character specified, the combination with a lump-house of supporling` dbvides upon which said lamp house is slidetblv und tiltably niouuled; said' supporting devices con'iprising a round rod,

lugs at the front i said lmnp-.house through which -said rod passes1 a ojnidcwvay below said rod, and a roller at the 'trout ot said lamp-house which este against said guiden I. in ilnojecting1 apparatus, the combination with a stand having a bed upon which projerting lenses may be removably mounted ol a lamp-house tiltably mounted on said stand adapted to be tilted over upon said bed when not Ain use.

4. Iii; projecting apparatus, the combinau tien with a stand having :ilongitudinally slotted bed, of a lamp-house mounted at one end of said .'oed and lens brackets adjustably and removably secured in said slots,

ln'projecting apparatusf a la1np-house having a chamber provided at the forward ond with u project-ion aperture, aishutter slidubly mounted in said chamber on the 'forward wall and adapted to close said chamber, and shutter-o' ereting devices coin` prising a shaft extending longitudinally of said chamber, a slotted arm fixed on said 'ou the screen. The proper positioning oi the shaft adjacent to said shutter, a stud on said shutter engaging the slot in said arm, an operating arm orlevcr xed on said shaft external to said chamber, and a spring catch mechanism associated with said shaft and adapted to operate When said shutter is moved to' ificover the projection aperture and to holdisaid shutter in such position.

C. In projecting apparatus, a lamp-house having aneseape opening in thetop for products of combustion and provided in its forward end with a proj ectionaperture, said lamp-house having air inlet openings formed in the loweigportion of the front Wall and a batlle platewithin said chamber and adja cent to said inlet openings, whereby air admitted to said chamber is caused to rise along the inner surface of said forward wall and exert a cooling` etectupon a lens niount.

ed in or adjacent to said projection aper- 20 ture. 7. In projecting apparatus, alaInp-house provided near its base `With a longitudinally disposed guide rod and a lamp bracket slidably mounted on said guide rod and havin g5 an arm projecting laterally through thewa a of said lamp-house and having another arm extending across lthe base of the lamp-house` and engaging the side of the lamp-house opposite the guide rod, whereby saidv bracket 130 is supported without .interference with its movement along said guide rod.

I n 'testimony whereof, I have signed' my nalne i the presence of two witnesses.

K EBERIIARD SCHNEIDER;

' 'YVitnessesz 1 EDMUND WISNIEWSKI, J oHANNEs SCHNEIDER.

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