US1809327A - Motion picture projector - Google Patents

Description

June 9, 1931. G. J. BADGLEY 9 3 MOTION'PICTURE PROJECTOR Filed July 25, 1924 2 Sheets-Sheet 1 IN I/E/VTOR rm/awn 2 Sheets-Sheet 2 G. J. BADGLEY MOTION PICTURE PROJECTOR Filed July 23, 1924 June 9, 1931.

Patented June 9, 1931 v FNITEDT'STATES GERALD" J.

ATENT O E",

BADGLEY, or BROOKLYN, nnw ,YORK, nssroivoaro DUPLEX Motion 7 PICTURE 11vnnsmmns,mo.,n CORPORATION or DELAWARE Motion rio'rUnE rnoanqron Application filed 31115 23,

This invention relates to picture projecting out rotation upon manipulation of manual driving means therefon y Another object of the invention is theprovision of manual operating means for V such an apparatus 'so'constructed as to permit at tachment to or detachment from theniotor driven shaft, or attachment directly to the driving spindle of the apparatus when the motor driving means has been detached there from. f One of the features of the construction is theprovision of means whereby the housings for the lighting means'and for the motorand ventilating fan may be removed readily from the main body of theprojecting apparatus or attached thereto, thus} permitting change of lighting means, to accommodate the apparatus to the various requirements.otservice. Anotherffeature is the provision of latch ing means preferably "in the form-of ballpressed snap-latches adaptedfto effect positive holding and ready removal of the lighting and ventilating housings from the main body of the projecting apparatus. j These, and other features ofthe invention not hereinbefore referred to'will beihereinafter described and claimed and are illusrated in the accompanying drawings, in which Figure 1 a'vertical section showing portions of motor and manual driving means for .a' projecting apparatus, the manual" driving means, shown being adapted to operate the mechanismof said apparatus when the motor driving means is idle i 1924, Serial No. 727.678.

Fig. 2 is adetail showing gearing between i the motor and the driving spindle of the 'apparatus for efiecting' rotation of the mechanism of' sa1d apparatus when motordriving means is employed;

' Fig; 3 is a detail, in section, of the drive spindlev of the apparatus and ofa handle adapted for cooperation therewith to eii'ect manual operation of'said apparatus when the motor driving meanshas been detached there from.

Fig. 4 is a vertical section showing motor driving-means and lighting and ventilating means for a projecting apparatus, together with the housings therefor, and means for removing said motor, lighting, ventilating and hogsing-meansfrom the apparatus as a unit, an Fig. 5 is a horizontal section of the same, the section being taken on theiline' 22,

- Similar characters designate like parts in. all'the figures ofthe drawings. a "Referring to the drawings, 2 designates the upper portion'of the casing for the driving gearsand other enclosed parts of apicture projecting apparatus, and 3 a housing for an illuminant 4 therefor, said'illuminant being illustrated herein as an incandescent lamp, though it will be understood that any suitable type of lighting'means may bev employed. Asshown the housing 3 has attached thereto a housing 5 adapted to enclose a'poweudriv I ingmeansfor the projecting apparatus, said means being shown as a motor 6, the bearings for the'shaft of saidmotor being'shown at 7 V and the shaftat 8. On said shaft 8 and with I in the housing 5 a fan 9 is secured. This fan 9 maybeof any type adapted to effectventil'a-i tion of the motor housing 5. and of theil luminant 4 and its housing. 3. I

In the device as shown motor operated drivingmeans are provided for a projecting apparatus so connected thereto that it may be removed readily from said'appa'ratus when ever desired, to permit-the, employment' oit manual operating lmeans therefor; or'the motordriving means may remainattachedto theap'paratus and yet permit the employment of the manual operating means before referred to in order to effect driving of the mechanism of the projector or to adjust the position of the film and to bring any desired portion thereof into position for projection, at which time the motor will be idle. To accomplish the motor driven operation referred to, a drive spindle 23 for the gearing 24 of the projecting apparatus is recessed to receive a shaft 25 actuated from a motor-shaft 8, through worm 21, worm-gear 22 to shaft 25 adapted to be inserted in the drive spindle 23 and to be locked therein. At 20 is shown a ball latch having a knurled head portion 19 adapted to permit ready manipulation when it is desired to withdraw said latch to per mit removal of the motor driving means and resort to manual operation of the'apparatus. As shown said motor driving means with its housing 5, .and the illuminant 4 and its housing 3 may be removed from the projecting apparatus 7 by an outward pull on said knurled head 19, this action serving to release the latch-pin 20 and permit such removal of the parts named as a unit.

It may be desirable at times to operate the projecting mechanism manually but without detaching the motor and associated parts from the apparatus. The knurled head 19, as shown in Fig. 1,'and the shaft 25 are shown as adapted toreceive the shaft 26 of manual operating means 27, said shaft'26 being provided wlth a runway 28 adapted to receive the pin 29 to effect positive latching of the parts 26 and 25 to prevent relative turning thereof. To latch the shaft 26' against with- V drawal from the shaft 25 during manual operation, a ball-latch 20 is employed similar to the ball-latch 20 of the motor driving means. When desired, the motor and the illuminating means and the housings therefor may be detached readily, as a single unit, and the shaft 26 of the manual operating means 27 may then be inserted .and seated in the driving opening in the casing 2, as shown in Fig. 3,. the runway '28 co'acting with the pin 29 in the same manner as the pin 29 coacts with the runway 28 when the motor and housings are attached to the apparatus.

Whenit is desired to operate the mechanismof the projecting'apparatus manually but without removal of the motor and'associated parts, it will be necessary to provide means adapted to cause said motor and asso-i ciated parts to remain idle during such manual operation, and this I accomplish herein by the use of an over-riding clutch,

whose actionis to permit manual turning of the shaft 25, thereby causing rollers 30' to coact with depressions 31 in a clutch member 32 to effect turning of the shaft 25 and the member 32, with "the rollers carried loosely in the depressions 31, thuscausing the wormgear 22 and the worm 21 to stand idle.

When, however, the motor driving means is in operation, the drive is from the motor 6 to shaft 8, worm 21, worm-gear 22, causing a we ing action between the parts 32 and 33, the shaft 25 and the clutch member 32 being held against relative'rotation by the pins 34. At such time, with the motor driving means in operation, the handle 27 will be removed from the shaft 25.

While ventilation of the housings 3 and 5 and of the illuminant 4 may be effected by the rotation of the fan 9 only, I have shown, in addition thereto, improved means for more effectively ventilating such spaces and cooling such members, such improved means comprising devices adapted to direct currents of air in close proximity to such parts. To effect this there are shown in Figs. 4 and 5 herein inlets to the motor housing 5, and to the housing 3 for, the lighting means, so placed as to cause intake of air to said housings and direct the currents therethrough and'over the surface of the motor and lighting means in the most effective manner. The means shown for this purpose include open ings 10 in the housing 5' contiguous to the fan 9, a baffle-plate 11 interposed between said openings 10 and said fan, anddirecting or feed openings 12 in the plate 11 so positioned as to effect intake of air contiguous to the fan shaft 8, said currents entering through the openings 12 and being directed around the motor 6 to air-outlets 13 leading into the lamp-housing 3 near the base of the lighting means 4. Interposed between the lighting means i and the incoming currents of air is a baffle-plate 14 surrouding said lamp, and extending preferably to the sides of the housing 3. Openings 15 in said bafiieplate are so positionedas to cause currents of air entering the lamp-housing through said openings to follow .a course substantially parallel to and against the surface of the lamp 4, from which it passes upward to, and through the outlet openings 16 and to the outside air. The direction of the intake, circulation and egress ofnair. currents is indicated by arrows in Figs. 4 and 5 of the drawln 's. V

The housing 3 for the illuminating means and thehousing 5 for the'motor-andfan are shown herein as a unitary structure adapted 1 ing gear, of means for-permitting manual operation of said driving gear to adjust the position of the film and to bring any desired portion thereof into position for projection, said manual operating means embodying a one end of the first mentioned shaft for the manual operation and driving of said gear- I ing to adjust the position of the film and to spindle for effecting a positive connection therebetween while permitting said shaft to be readily disconnected from said spindle, 'a housingln whlch sald drlving means 1s po sitioned removably mounted upon sald caslng,

a manually manipulated latching device normally holding said housingin position on, said casing while permitting the removal thereof with the driving means as a unit.

Si ned at New York, in the county of New York, and State of New.York, this 17th day of July, 1 V GERALD J BADGLEY;

bring any desired portion thereof into posi -v 7 tion for projection, said clutch permitting the motor driving means to remain idle during the manual operation of the gearing.

3. In a picture projecting apparatus, the

combination with driving gearing therefor, of motor operated driving means for saldgearing including an over-riding clutch adapted to be brought into operation to drive said gearing upon rotation'of said motor and to be thrown out of operation when the motor is idlerto permit the position of the film to be adjusted and to bring any desired portion thereof into position for projection by manual operation of the apparatus, said motor operating and manual operating means each embodying a driving shaft having a runway therein adapted for coaction with a stop on an encasing bushing attached to the driving gear of the apparatus and adapted to effect rotary movement of said driving gear, and a spring-pressed ball carried by each of said shafts and each adapted to cooperate with a seat in said bushing to prevent movement of said shafts in and out in said bush- 4. In a picture projecting apparatus, the combination of driving gearing having a spindle, motor operated driving means including an over-riding clutch and shaft, the

latter detachably connected with the spindle a and adapted when attached thereto to operate the driving gearing, a crank having a crank shaft fitting into one end of the firstmentioned shaft and detachably connected] therewith, said crank by the intermediary of the first-mentioned shaft being adapted'to independently drive the driving gearin with the motor attached and in idle positlon to adjust the position of the film and to bring any desired portion thereof into position for projection.

5. In plcture projecting apparatus, the combination with driving gearing mounted in a casing and having a spindle recessed to re- 1 ceive one end of a driving shaft, of driving means for said gearing including a shaft removably secured to said spindle, latching means interposed between said shaft and-

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