US1384527A - Motion-picture projector - Google Patents

Description

c. KESSES. MOTION PICTURE PROJECTOR. 'APPLICATION FILED APR. 1h IQIB.

Patented July 12, 1921.

2 SHEETS-SHEET 1.

III!

'IIIIIII/I Mia C. KESSES.

monou PICTURE P ROJECTOR. APPLICATION FI'LED APR. n, 1918.

1,384,527. Patented July 12, 1921.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

mama masses, or NEW YORK, N. Y.

Original application filed September 25, 1917, Serial No. 193,180. Divided and this application filed Aprilv Specification of Letters Patent.

Patented July 12, 1921.

11, 191.8. Serial-N0. 227,867.

To all whom it may concern:

Be it known that I, 'CHAnLns 'Knssns, citizen of the UnitedStates, and resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements'in Motion-Picture Projectors, of which the following is a specification,

his application is a division of my application Serial No; 193,180, filed Sept. 25, 1917, Patent No. 1,281,253, and the objects of'my invention are; first, to rovide in one machine two independent fi m movements, one a constantly running film movementin-connection with a synchronously movable lens and the other an intermittent feeding movement, to enable the operator, in case one movement is out of commission to use the other; second, to provide means whereby either can be used for taking, projecting or printin third, to provide adjusting means where y the apparatus can be adjusted for different sized pictures and for different widths of film strips, to enable an operator to expose large size successive negatives for printing useful hotos on paper for commercial purposes; ourth, to provide an improved intermittent film feeding device, having means for adjusting its movement so that said movement can be regulated for the size of pictures in the height and the length required; fifth, to provide means whereby plain film strips can be operated; this means a big saving, also valuable positive or negative motion picture films wherein the erforation is worn out or imperfect; such lms would otherwise be worthless; sixth, to provide an automatic safety door between the projector and the film; seventh, to provide means whereby sensitive paper strips can be printed from successive negatives.

I attain these objects by the mechanism illustrated in the accompanying drawings in which Figure 1 is a side view of the apparatus wherein is shown a film advancing mechanism in its uppermost position.

Fig. 2 is a view of said film advancing mechanism half way downward.

Fig. 3 is a view of said mechanism at its lowest position. I

Fig. 4 is a side view of an eccentric wheel with a regulator B which is operative in said film advancing mechanism.

Fig. 5 is a vertical cross-section of the eccentr1cincluding the regulator.

Fig. 6 is a perspective fragmental view of the film advancing mechanism, showing the movably secured pinhead separated from the lower frame.

Fig. 7 is a front view of an adjustable film guideway, showing slidably secured guidearms for the film and for the pins.

Fig. 8 is a side View of said guide arms.

Fig. 9 is a perspective view of an adjustable film feeding device, showing slidably secured arms.

Fig. 10 is a fragmental view of the sprocket wheel from said feeding device showing how to change said sprocket.

Fig. 11 is a side view of said arms which are mo'vably secured to the feeding device.

Fig. 12 isa perspective view of anauto- ,matically closing safety door.

Similar characters refer to similar parts throughout the "several views.

. I- first describe the intermittent mechanical movement of the projector. A lens-board 1 is slidably secured in a rail support 2. A screw 3 secures said lens in a suitable position in said rail. Said support is slidably secured in theprojector to allow using different focus lenses. A rotary shutter 41 withone' openin is secured to a shaft 5 which is journa ed with suitable bearings in the front wall and a partition of the apparatus. Said partition has an opening in the rear of the ens.

An intermittent feeding device is shown in difi'erent positions on Figs. 2 and 3. A square frame 6 is slidably secured in a rail support 7. An eccentric wheel 8 is set in bearings in an outside rim 9 to reduce the friction between the eccentric and the plane surfaces 11 and 12 in said frame. Said rim is a trifle smaller than the frame to allow movement between said plane surfaces. Said eccentric and a regulator are shown in Figs. 4 and 5. Said regulator can be secured to said eccentric in many different positions for the size of pictures required. Said regulator is in two parts A and B screwed together with screws 14. Part B is secured to a shaft 5. Two wings 15, one on each side are secured onopposite sides on said eccentric; to reciprocate a pinhead 16 which is in a horizontal direction slidabl secured in rails 17 to the frame 6. The pmhead separated from said frame is shown in Fig. 6. Two openings 18 in the upper part of said frame must be larger than a twin-bolt- 19 which is secured with a screw to the pinhead to allow for moving said bolt in the openings 18. A second position of said bolt 1s shown as a dotted line, 19

When the eccentric turns, the front wing moves said bolt forward and pushes the pins 20 in the perforationof the film 10. The eccentric turns i revolution and moves the film downward as shown on Fig. 2, the lowest position of the pins being shown on Fig. 3. The rear wing disengages the pins from the film and the carrier returns to the position shown in Fig. 1. Said pins are slidably arranged in a rail 21 which is secured on the pinhead 16. A screw 22 has a right and a left thread. W hen said screw is turned the pins 20 move nearer or farther apart to fit in the perforations of the film.

A film guideway 23 is in two parts and is hinged together, bein shown on Fig. 7. One part of said guide 1S stationarily secured on a support 24. Corresponding exposing boards 25 for both sides of said guideway, can be changed for larger or smaller center opening ones. Said boards are secured to said guideway with clamps 26. Guide arms 27 shown on Fig. 8 are slidably secured on a rail 28 which is secured to the front part of said guideway. The lower part of said arms are provided with hooks 29 to secure them to the lower part of the film guideway.

Each of said arms are provided with three pins 29 to fit in the corresponding openings in the front and the rear exposing boards and in both parts of said guideway to give the film running inside of said way a guide. The round openings in the exposing boards 25 must be in a position to be in line with the corresponding holes on the film guideway for the width of film to be used, as for instance if a 4 inch width film strip is used, then the opening 29 in the exposing boards and in the film guideway must be so far apart to secure the guide arms accordingly to the film guideway to hold the film in position; corresponding numbers show the position of those openings to secure the guide arms.

A film feeding device shown on Fig. 9 can be easily adjusted with larger or smaller sprocket wheels or plain rollers 44. One side of a stationary support 30 is on hinges A so it can be opened to change the rollers. The main or ower shaft 31 isjournaled in the wall of t e projector and in said su port. A square bolt 32 is secured to said shaft shown in Fig. 10 to rotate said rollers, which have corresponding openings 32. An idle shaft 33 is journaled in slides 35 which are movable in rails secured on the sides of the sup ort 30. Springs34 secured below said 'sli e press the rollers together. Arms 45, a side View being shown on Fig. 11, are movahly secured in a' rail 36 which is secured in the upper part of said support. The upper and the lower parts of said arms 37 must fit when in closed position in corresponding grooves 37, to hold any size rollers or sprocket wheels. All rollers or sprocket wheels have gear wheels 38 to rotate them.

Between the exposing openin and the condensers is an automatical y closing asbestos door 39. Wires 40 are shown in Fig. 1 running over pulleys 41. Said wire spring passes through loops 42 which are secured in said door. An extension pulley 43 secured to the lower pulley 41 is con nected with a wire'to a lar e pulley, secured to the main shaft. When the apparatus is in operation, by the quick action of the wires 40 the door is lifted above theexposing opening and as soon as the apparatus is not acting the door drops by itself to prevent the light from acting on the film.

Turnable film inlets 46 in the film boxes 47 give the film going in or out of said boxes, if the film box is full or almost empty the right position so that the film will not be bent. To exchange a film box turn the slot downward until slot will not show and the box will be light proof.

The driving mechanism is as follows:

I The main shaft 31 is driven from a crank 48. A bevel gear 49 secured to said shaft is meshed to a bevel gear 50, which is secured to a-shaft 51. Said shaft is journaled in a support and a partition in the apparatus. A gear 53 secured to said shaft is meshed to a gear 54 which is secured to the shaft 5.

The projector which operates with a constantly running film is the same as described in my Patent No. 1,123,341. The lens 1 is set in an aluminum lens board which runs in rails 2 up and down. A sprin 55 is just strong enough to lift the lens. aid spring is secured to said lens board and upper part of camera. A square case 56 and an eccentris 57 with a regulator (same model as the eccentric 8) reciprocates the lens. To connect this movement to the driving mechanism secure a screw 58 in a suitable position in one of the openings 59 in the shaft 5. Release the screw 3 on the lens board, remove the twin-bolt l9 and secure the exposing board 60 with screws 61 to the square case 6, as shown in dotted lines in Fig. 1.

The eccentric for the lens slide and the other for the exposin slide must be regu lated. If the size of t e pictures are 5; inch high, then the eccentric must be set with the regulators to reciprocate said slides each way of an inch, both movements combined must be i of an inch and the o nin in the film guideway must be double the heightof the picture.

Different widths of unperforated film strips or different width of a itive or negative film wherein the per oration is worn out or imperfect can be exposed, projected or printed with the apparatus by using the constantly running film movement.

By using this movement described in my Patent No. 1,223,341 insert lain rollers 44, gear wheel 38 being secure to said rollers to rotate them. The u per-roller or'operating roller shown in Fig. 10 must have exactly' the correct diameter to transport by each turn of the driving shaft 31, film for 8 pictures, for the size of said picture re quired the gear wheel 53 turns 8 times the gear wheel 54 which rotates both eccentrics 8 and 57.

From this it follows that by every turn of'the'ifiivin g shaft the roller 4A will rotate once, furnishing film for 8 pictures; the lens 1 and the exposing board 60 is also lifted and lowered. 8 times and the shutter is so proportioned as to be only open, when the lens, the exposing board and the constantly running film 10 go down together in haren the apparatus is usedas a projector, secure a positive film in the upper film box, move turnable film inlet forward; let the film pass down between film guide wa between film feeding rollers, through the film inlet in the lower film box; "to be secured to an empty spool. The first picture must be exactly in the opening of the film guideway, place the condensers in position and it is ready for operation.

When using for a camera place the sensitive film in same way and close the apparatus in the rear.

When using as a printer, to print duplicates froma negative film on a sensitive film lace a second roller above the sensitive film 1n the upper film box, feed both films together through the apparatus same as usual and secure the negative film on an empty spool below the sensitive film in the lower film box. When printing use a milky glass between the lens and the electric light.

When exposing photos on a sensitive paper strip, place said strip the same way, as the sensitive film, under the negative and expose accordingly.

I am awarev that prior to my invention projectors havebeen built but I have never seen, two projectors in one, second; using of plain and perforated film, third; larger or smaller pictures, fourth; one frictionless eccentric which can be regulated for the length pictures on a sensitive paper strip.

What I claim as new and desireto secure by Letters Patent is-- 1. In a motion picture machine, a film gate, a rail horizontally disposed on said gate and film guides slidably mounted on said rail, as and for the purpose set forth.

2. In a motion picture machine, a film gate having an aperture therein, a rail mounted on said gate transversely of the direction of travel of the film by sa1d aperture, film guides adjustably mounted on said rail, and means for locking said guides in various adjusted positions to accommodate various widths of film.

CHARLES KEssEs Witnesses:

JAMES Cnoss, I v JULIUS GOLDWATER.

of stroke required, fifth; exposing successlve

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