US1746014A - Projection apparatus - Google Patents

Description

Feb. 4, 1930. w. E. scHwANHAussER 4 PROJECTION APPARATUS Filed March 14, L928 2 Sheets-Sheet l Feb. 4, 1930. w.- ESCHWANHAUSSER 1,746,014

' PROJECTION APPARAIJUS Filed March 14, 1928 2 Sheets-Sheet 2 Pa tented Feb. 4, 1930 .f UNiTEn sire,

'I T NTb- ICE WALTER E. SGHWANI-IAUSSERDF MAEnEwoon, nEW JERSEY, Assmnon TO cH AELEs IBESELERCOMPANY, OF; NEW YORK, n. Y., A CORPORATION OF NEW JERSEY V PROJECTION APPARATUS pplicant filed March. 14, isasjserial no. 261,455Qand in France February 1. 1928. 1

invention relates "to projection apparatus and more particularly 'to'one designed tothrow an image at various heights upon the opemngs 16, 17 and 18, thereisa sleeve member 21 which is adapted to'receive fa ascreen. Among the objects ofmy invention is to provide" aprojection apparatus which may be adjusted as the result of simple manipula tion so that the position'of an image upon a screen may be changed ina vertical direction I without necessitating tilting of the entire' apparatus or of'm'oving it"toward or away from 'the screen; As ancilliary to and embodied with the attainmentofthe stated object there is a further object residing in certain simple features of construction which render it possible to shift the line of collimation and thesource of lightwith one adjust- V I Anotherobject resides in providinga hous ing or. cover for projection apparatuswhich 5 is'provi'ded'withmeans for enabling the selection of the opening and adjustmentof the opening through which projection is to be had from the inner side of the housing'or cover. In'the drawings: j T1 I Fig. 1 is a perspective view of the projection apparatus; Fig. 2 is anelevation of the projection chamber of the apparatus; and i Fig.3 is a view on line 3-3 of Fig. 2. My invention is illustrated as. being em-' bodied in a simple form of projection apparatus which is'particularly designed for advertising purposes. The housing. 10-has a rectangular base 11 and vertically extending walls, the forward wall 12 and the rear wall merging into one another in thefform of v a curved roof 13. v The housing 10 has a door 14' in'a side wall for the purpose of obtaining access into the interior of the housing for makingthe adjustmentswhich will be here inafter described. Mountedupon the for I ward wall 12 is a plate 15 formed to fit the curved surface of the Wall. and to constitute openings at 16, 17 and 18. This 'plateis adapted to be secured to the front wall 12 by a means of shouldered screws 19 which engage within threaded holes in wall 12. Slots 20 are provided inplate 15 so that the plate may issupported upon rod'34 by means of; fric} 7 'tional engagementl'therewithcaused by the]:

Ward and backward upon platform' as] ,guided'by rails 31. v a The forward end of membe1"24,carries the "condensing lens system 39. Since. I have;

a part thereof. Plate 15 has a plurality of be moved and placed in any desired position within the limits of the length of the slots.

Secured to the plate 15 and opposite each ofprojection lens system 22. As shown in Fig.

2, the projection lens system 22 is supported I be rounded. One end of member 24 is loosely mounted upon shaft 25 which is disposed at the upperextremity of standard '26. Member 24 carries a lightsource l in the form of a lamp 27 and a reflector 28. *Bars' .29 whichextend from member-'24 have afiixed f thereto a platform 30 having guiderails 31' at H opposite edges thereof which enable the lamp 27 and the reflector 28 to be adjustably posi} tioned in respect to shaft 25. 32 is a lamp socket which iscarried by a member 33 which;

tightened condition-of screw 35. Member 33; also carries a bar 36 tojwhich the reflector 28,

- is secured. Guidingpins 37 and bar 34 serve pendicular to the platform 30. Bothfthe. l

to guide the light source in a direction perguiding barj37 and the bar 34 are mounted f upon a plate 38, Fig. 3, which may slide for; .1

chosen to mount the source oflight' in 'a man ner which permits ofvariation in thespaced V relation of the condensing lens system and the source of light Ijhave sho'wnthe condensing lens system as being rigidly mounted" tov member24.@ Extending from the casing'of the con-densin'gv lens system '39 there is a. projection 40,

rod 41; 'The pivot pin 42which engages rod 41 is threaded so that when theposition of' member 24, and hence of the condensing lens Fig. 3, which pivotally supports one end of may be tightened so as to rigidly maintain the adjusted position. Rod 41 is one member of a telescoping rod connection of which hollow rod 43 is the other member. Hollow rod 43 is pivoted at 44, a pivot which is supported by a bracket 45 on the floor 11 of the apparatus. As the angular position of member 24 is varied for the purpose of placing the line of collimation of the condensing lens system in the direction of any one of the three openings 16, Hand 18, the telescoping relation of rods 41 and 43 will be varied. hen the desired angular position of member 24 is obtained screw 46 may be tightened so that rods 41 and 43 will serve as a supporting member for the forward end of member 24.

lVith the apparatus just described horizontal projection may be obtained by lowering member 24, Fig. 2, to a horizontal position in which the line of collimation of the condensing lens is in alignment with the center of opening 16, the position of opening lti having been previously obtained by the proper positioning of plate 15.

mg 16 may then be replaced by the projection lens system 22. The desired focus is obtained in the usual manner by adjusting the axial position of the projection lens system within sleeve 21. The cover 23 which has been re placed may be used to close one of the other of the two openings 17, 18. With member 24 in this position the projection apparatus may be used in a manner similar to the manner of use of ordinary projection apparatuses having but one direction of projection. If it is desired to increase the height of the position of the image upon a screen, instead of tilting the entire apparatus it is only necessary to varythe angular position of member 24 so that the line of collimation of the condensing lens system may coincide with a line passingthrough the center of illumination and either one of the two openings 17 18.

One suc'h position is illustrated in Fig. 2.

The apparatusis particularly useful for advertising purposes where space is limited and where it is desired to throw an image upon a screen without necessitating the tilt ing of the pro ection apparatus. The machine which I have disclosed is a successive view machine having a rotating frame 47 and disk 48 mounted for rotation upon and byshaft2'5. Bars 49 serve to pickup suc- ,cessive slides 50, ofa chain ofslides, not

had to the United StatesPatent No. 1,650,507

The cover 23 on sleeve 21 which extends away from openstood that it is not intended to confine the invention to the one form of embodiment here in disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the claims which follow;

i hat I claim is:

1. The combination with a housing, a light source and condensing lens system, of means forpivotally supporting the light source and condensing lens system, said means comprising a member pivotally supported within the housing, and a plurality of openings in the wall of the housing, said openings being so placed as to coincide with the line of collima tion of the condensing lens system for different angular positions of said member.

2. The combination with a housing, a light source and condensing lens system, of means for pivotally supporting the light sourceand condensing lens system, said means comprising a member pivotally supported within the housing, a plate forming a part of a wall of the housing, said plate being adapted to be positioned relative to the housing, meansfor removably clamping said plate in a desired position, and openings in said plate for permitting the projection from within the housing at a plurality of points through the wall of the housing.

In testimony whereof I hereto aflix my signature.

WALTER SCHWVANHAUSSER.

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