US1799867A - Projecting mechanism - Google Patents

Description

April 7, 1931- G. RoulLLER ET AL PROJECTING MECHANISM Filed July 2. 192B 2 Sheets-Sheet l FIG- 1 April' 7, 1931.

G. ROUILLER ET AL PRoJEcTING MECHANISM Filad July 2. 1928 2 Sheets-Sheet 2 Patented Apr. 7, -1931 UNITED STATES PATENT OFFICE PROJECTING MECHANISM Application filed July 2, 1928, Serial No. 289,914, and in France July 25, 1927.

Our invention relates to a mechanism of simple construction more particularly designed for use in projecting apparatus employed for advertising purposes of the kind which comprise an endless film magazine such as the one described in the U. S. Patent No. 1,713,921, dated May 21, 1929. The

presence of delivery drums at the exit and at the'inlet of the endless magazine in the device described in said application makes unnecessary those provided on the ordinary projecting apparatus as it is sufiicient to produce a fiexible loop on both sides of the intermittent delivery device.

On thev other hand as the projecting apparatus used for advertising purposes works without supervision the picture framing device may be dispensed with, the places where the ends are assembled being carefully gummed together the same picture will pass exactly at the same place. It will therefore 'be sufiicient toprovide an optimum proportion between the Window and the intermittent delivery device, and also to very slightly reduce the height of the window to provide for the diilerent pitch of the various bands which are gummed together.

The projecting mechanism according to oui` invention fulfils all the required conditions and allows of constructing projecting apparatus at a cost'much lower thanA that of existing apparatus besides providing considerable improvements such for example as an accelerated moving away of the picture the continuousregular speed of the obturating device remaining unchanged. This latter device may constitute at the same time a fan and rotate at a speed which is for example three times greater. The appended drawings show by way of example a mode of execution of an apparatus constructed according to the present invention.

Fig. 1 is a part sectional view of our imp xoved mechanism, seen partly from the outs1 e.

Fig. 2 is a sectional view on line 2 2 Fig. 1.

ig. 3 is another sectional view on line 3 3 Fig. 2.

As will be seen in Fig. 2 the delivery device 1 designed to intermittently feed the film is secured at one end of the shaft 2 the other end of which is in the shape of a Maltese cross 3 as indicated in Fig. 3.

rlhe shaft 2 rotates in a boss 4 made in one With the casing 8 and is kept in position by means of ay washer 6 and a nut 7 the casing 8 is maintained in its correct position by a spur 9. Upon the `wall of the casing 8, on the same vside as the Maltese cross is mounted a plate provided with fingers 10 rotating on a shaft 11 provided with a bearing, the portion of said shaft which passes through the wall of the casing 8 being slightly excentric in order to -adjust the distance between the plate 10 and the Maltese cross 3; when thus adjusted the shaft 11 is locked by means of a locking nut 12. e j

The plate 10 is provided with a finger 13 which engaging tangentially one of the grooves of the Maltese cross 3 communicates intermittently to the latter a smooth and noiseless movement of 1A, of revoii iion for every revolution of the plate. On said plate 10 is also provided on the side opposite to finger l13 a second finger '14 diametrically opposite to the first' which' engages-in a groove 15 of plate16 in order to operate said plate 10 and cause it to move with an uniformly accelerated and then sloweddown speed, the shaft 17 which carries the plate 16 being` eccentered relatively to shaft 11. It will be noted that in that case it is the grooved plate that drives the finger 14 or if considering a case of general mechanics it is the slide that drives the crank pin, contrarily to what generally obtains in view of reducing the space required, the arrangement shown being circumscribed in a more reduced space.

On the other part both fingers 13, 14 are placed upon the same plate Vand as they are of the same diameter the construction is greatly facilitated.

The advance of the film takes place in the passage at the moment when the speed of plate 10 is accelerated, the plate 10 moving at an angle of during the time that the plate 16 moves at an angle of 60 or less according to the given eccentricity.

The cover 18 of the casing 8 constitutesr a bosses of frame 5. The

' ings 34, 35, said shaft carrying a regulating bearing for the shaft 17 of plate 16 said shaft carrying a pinion 19 actuated by a pinion 20 madein one with the shaft 21 which is carried by bearings 22, 23 provided in the shaft 21 may extend outside and issplit to receive eventually a handle provided'with a pin 24 which allows of operating the mechanism by hand.

A grooved pulley 25 keyed upon shaft 21 drives the mechanism byl means of a belt driven itself by a. motor.

The pinion 26 which is also keyed upon shaft 21 drives a pinion 27 made integral with shaft 28 carrying the obturating device 29 which constitutes a fan as already said.

The obturating blade has for example 180 but rotates at a speed which is three times higher than that of the shaft 17 of plate 16 the latter moving a distance of during the same timev and simultaneously, the ventilation being consequently much more intensive. The fan suction opening is provided at 30 in the casing 31 secured to the frame 5.

Thepinion 19 may eventually drive a pinion 32 keyed upon a shaft 33 carried in bearfly wheel 36 and an endless screw 37 which drive by means of a hollow wheel the vertical shaft of the endless film magazine.

A ate 39 carrying spring shoes 40 closes the passage 38. Y It will be understood that the design and detail construction may be variously changed considered as within the scope of the following claims. Y

What I claim and desire to secure by Letters Patent of the United States is:

1. A- projecting apparatus mechanism ing said finger upon one side a shaft carrysaid plate, a second finger von the other Y si e of the late, a Maltese erossfdevice operated by sal finger, a casing containing 'both plates, means allowing the driving shafts of both latestg be operatedl in such a manner that t e drlvmg plate of the Maltese cross is driven in a egularly accelerated manner and then delaye which' comprises: a driving shaft; a

upon a transverse shaftgearing with the first, a driving plate carried upon the transverse s plate of the Maltese cross rotates carried .on

cross operating plate,

or modified but all such changes are to be which comprises: a driving shaft, a pinion- 2. A` projecting apparatus` mechanism\ shaft, a Maltese cross, a driving plate for.

the other side of the casing, said shaft bein excentric relatively to the transverse sha which carries a.- driving shaft, a radial oove in the. driving plate, a finger ed upon one side of the Maltese cross operating plate engaged with the Agroove in the driving plate,

a second finger upon v the Maltese cross operating plate placed diametrically opposite the finger engaged with the groove in the driving plate and on the other side of the plate, .a Maltese cross device actuated by the second finger, a shaft upon which the Maltese cross is keyed, a film delivery shaft, a pinion secured upon the end of the driving shaft, a second pinion in ear with the first keyed upon the upper s aft, and means to drive the vertical shaft of the endless fllm magazine. Y 3. A projecting a paratus mechanismcomprising: a driving s aft, a pinion keyed upon same; a second pinion keyed upon a transverse shaft in gear with the first, a driving device keyed upon the end of said l plate carried upon the transverse shaft, an l operating shaft for the Maltese cross, a cas-v ing containing both plates and the Maltese cross, a slightly eccentered shaft fixed on the casing wall upon the position of said shaft being adjustable in order to determine the interval between the operatin late and the Maltese cross, a screwthreade s aft carried upon the stationary shaft, a locking nut upon said screw in order to adjust the osition of the shaft, the driving shaft an the Maltese cross operating shaft being eccentered relatively to each other in such a manner as to drive the Maltese cross operating plate first at a speed which is regularly accelerated and afterwards slowed down, the forward movement of groove in the driving plate, a finger secured on one side of the operating plate and engaged with the groove in the ivmg plate, a second finger on the Maltese cross. operating plate diametrically opposite on the other side 'of the driving plate, a Maltese cross actuated by the second finger a shaft carrying the Maltese cross and a delivery device, .an obturating f an device actuated by the driving shaft and means driven by the pinion on the driving shaft for driving an endless film mechanism.

4. A projecting apparatus mechanism comprising: a driving shaft, a pinion keyed on imo keyed upon said shaft, a second pinionllre'yed same, a second pinion keyed upon a trans- \.\verse shaft in gear with the first pinion, a driving plate upon said transverse shaft, a Maltese cross operating plate, a easing containing both plates and the Maltese cross, a slightly eccentered adjustable shaft on which the Maltese cross operating plate rotates., a groove in the driving plate, a finger fixed which rotates the Maltese the film taking place during' the slowed down period, a radiallll upcn one side of the Maltese-cross operating plate engaged with the groove in the Maltese cross operating plate, a, Maltese cross operated by the second finger, a shaft carrying the Maltese cross and a film delivery device, an obturating fan device operated by the driving shaft, a pinion earned upon a shaft arranged in parallel with the shaft of the driving plate and engaging the plate driving pinion, and anvendless screw keyed upon the shaft of the irst pinion in order to drive the vertical shaft of the endless film magazine.

In testimony that we claim the foregoing as our invention, We have si ed our names.

GEORGES OUILLER. JEAN MARION.

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