DE1816169A1 - Cinematographic projector - Google Patents

Description

D R.-J :: r

7 STUTTGARi-K. UNGE SVkAKIf ν

Eastman Kodak Company, Rochester, New York State, United States of America

Cinematographic projector

The invention relates to a cinematographic projector with a carrier which is arranged so as to be movable relative to the projector housing and on which a spindle for receiving a coil body is rotatably mounted. ^: .

In known projectors of the type mentioned above, in

more recently, for example according to the patent

. (Patent registration of the applicant Reg.No. 12l · 637), - proposed, to feed the film to be projected from a projection cassette that can be attached to the projector, ..in the. Spool for the .Filmvorrats is housed. After this The above-mentioned suggestion have demonstration cassettes provided for this purpose, at least in one side wall, with a hole through which which passes through a spindle pin of the supply spindle into the bore of the hub of the reel located in the cassette ^ body can be inserted. It was here too

suggested the cassette on its periphery with a slot opening to provide, through which a stripping and

909831/0898

ORIGINAL INSPECTED

a

Threading device of the projector to the outermost turn of the! The film reel located in the sette is used to "lift the catch from the film reel, to initially lead it out of the cassette and to insert it into the projector's film guide."
For this purpose, a belt drive acting with an abs can be provided, their working position in contact with the wickeis.

radial access of the body of the cas- ' These stripping and '■' of the front film- ■ of the removed film- ' theirs at the beginning of the movie

to be together with the aforementioned pre-maturing finger, both of which are in Scope of film

According to

The use of demonstration cassettes, carried out automatically and in the Pro, and in which the film is rewound afterwards brings essential lent improved ease of use but the disadvantage, -that you get through the cassette to a certain maximum that can be projected.

The invention has the task of create, which is suitable for cassette operation no restrictions whatsoever on the films that can be projected

taken

According to the invention, this is the object

us which the film ektor threaded

Projection again with regard to advantages

Any chosen size of the film length occurs

cLie

a projector too

is where the film lengths must be from.

solved in that

for the use of film supply spools of different sizes, which are housed in cassettes of different sizes, at least one ' stop surface' is provided on the projector housing, against which the cassette attached to the projector housing rests and is thereby aligned in a predetermined position on the projector, and that the carrier of the

ine

909831/0898

ORlQiNAL INSPECTED

various

Spindle can be moved into one of the size of the Kass treatment, in which the spindle body is attached to the projector
is achieved through that cassette
can be arranged for the projection on the projector in a predetermined position, in .Einfädeleinrichtung of the projector did the Pilmanfäng automatically from the-Kas to introduce the film guide of the Pröjektqrs

You have it with the appropriate choice of

tte dependent stelioaxial to the reel t cassette. There-

Sizes straighten the scraper and g can be made to. ette out and in

Major gradations

of the cassettes intended for use with the projector in the hand, an arc of a circle for the occurring positions of the axis of the coil bodies of different sized cassettes. The support for the spindle may in this case particularly easily formed than are pivotable support arm, the ISFC in percent (of the circular arc around pivotally mounted on the projector housing _0th I

In an advantageous embodiment of the invention, the arrangement is made so that the support of the spindle is not only a Verstellbwegung the same along a fixed arc 'allows, but allows ;, the spindle in different, to move positions not lying on an arc. This results in the particular additional advantage, that in the design and in the choice of the size gradations of the cassettes intended for use, one lig is free »

909831/089 8

ORIGINAL

The invention is explained in detail below with reference to the exemplary embodiments shown in the drawing.

■ i
It show: · ί ■ ·

1 shows a partially broken away and sectioned side view of an exemplary embodiment; , · '

2 shows a plan view of the exemplary embodiment according to 'Fig. 1;

3 shows a front view of the embodiment according to FIGS. 1 and 2;

H shows a schematically drawn side view of parts of the embodiment;

Fig. ''■> one of the'Fig. 1 a corresponding view

th Ausf ϋΐιπαΐφ Aw i ßpi el s;

Fiß., (> ( ¹ JTH. Perspecti.ßchoi view of a Karretto i'ü <the use in it tion / U; u3 leadership;. · "With · - ! ■■ pial and one abfier; sections shown] 3 ■ = -!, (οι -part of the exemplary embodiment) according to Vi f _t 5 | äjer for receiving cassettes di with;

Pig «7 e>: i7>r; schematized pc-zei (ilmete Seätonan-Ki ¹ Ii i. some parts of the executionnbni -, f.pj el s p-eraäß Fig. 5 '> υκί G;

/. '' ^r i ^! ""fil'i'- open no. "' ³ ?" if-] Mr. Tc: nnvqi.'f- ·. «M. on dar-; let.rUp: - '"nuiCi A u ti ί ührnn / :: ι. ·'".

9: a section along the line IX-IX of FIG. 8; '

■ ι

■ · - '. Fig. 10 shows a smaller drawn, the Fig. 9 ¹ ent'- ■ ''''

■ '' speaking cut through a simplified

. Embodiment;

Fig. Ii one such. 9 similar partial side view a further modified exemplary embodiment;

'· ■ ■'' i

FIG. 12 is a longitudinal section, seen from ^below,: by the embodiment of FIG. ^11:

. and ^; '._ ■'.

Figure 13 is a view corresponding to Figure 11 further .exemplary. ,

1 !

As mentioned above, ·. *;

proposed a cinematographic projector in which the invention can be realized. In Figs. 1 to 3 are some details of such a protector are shown, which has a rectangular housing 11 with a housing compartment 12 "{ that extends on the right side of the projector and a front-facing projection lens 13 houses. Above the housing section 12 ″ extends a rotatable take-up spindle 14 over a vertical wall 15. out. Coaxial with the spindle I ^ is not shown Pulley that rotates clockwise continuously while the projector is in operation. The spindle I ^ can be a relatively small film take-up reel, as indicated in Figs. 1 and 2.mit 16 and shown in solid lines

represents isb _f . or a relatively record, which in Fig. 3 .and 1 with 17

90983 17 0 89 8

large take-up reel j and in last-

., rer 'is shown with dash-dotted lines. Corresponding extends a similar supply spindle 18 over the Wall 15 through a plate 19 through. Coaxial to Spindle 18 is another pulley, not shown, which

during the rewinding process B ' is driven

On the spindle 18, the hub can be one

clockwise

Supply spool

20, which is accommodated within the cassette 21, which can be attached to the projector, as shown at 23. For receiving film 2k _t fed from such a cassette 21, the take-up reel 16 can have a size which corresponds essentially to the size of the cassette as shown in Fig. 1, or it can be larger or slightly smaller s ^ in, ■■

The cassette 21 can be releasably locked on the projector so that the coil body 20 of the cassette is coaxial with the spindle 18

I - - and is in drive connection with this. To move the film out of the cassette, the operator presses manu

ell a button 26 in a position ir a locking mechanism is held,

which they can be solved by the here not closer

should be described. This causes a stripper finger 27 to enter the slotted lower part of the cassette 21 and to pivot a stripper belt drive 28 counterclockwise around a shaft 29 to bring a stripper belt 30 into contact with the circumference of the film roll on the supply spool 20 At the same time, the drive connection between the spindle lü and the associated belt pulley is decoupled so that (3 the coil body 20 can rotate freely within the cassette ^.:

The squeegee belt 30 is continuously counterclockwise driven. Therefore, the contact rotates between the circumference of the winding

9.0 9 8 3 1/0 8 9 Β

ORIGINAL

and the circumference of the belt 30 moves the coil clockwise. Accordingly, the front end of the film is lifted off the film roll by the stripper finger 27 and guided out of the cassette through a narrow guide channel which is formed between part of the stripper belt 30 and the adjacent edge of the stripper finger 27 will.

When the leading end of the film has advanced beyond the area of the guide channel formed between the wiper belt and the adjacent edge of the wiper finger, it runs into a curved film channel that is formed between a stationary film guide body Jl and a movable guide 32 serving as a film damper , which can be pivoted downward about a pin 33, but is pressed resiliently in resilient contact with the guide body Jl. This curved channel directs the leading end of the film downwards into a stage 33a, where the film comes into engagement with a film pull-through mechanism 33b of the projector and is moved intermittently past a projection station which is aligned with the optical system of the projector » Beyond the film, the front end of the film advances in a pivotable guide channel Jh , which guides the front end of the film in such a way that it comes into contact with the hub of the take-up reel 16. As is known in projection technology, the hub of the The take-up must be provided with a large number of teeth which can come into engagement with the lateral perforation of the film, so that the film is attached to the hub for take-away once the film has been brought into contact with the hub.

The s ^ -XorPinrichtunn besti-mmt j mm of - ^': _-: When the film u ": rch ergriffenist- the film pulling mechanism will be nil ΐ i.ütreffen a predetermined location AENC η a geeipaeto

3 1/089 i ^BAD

Key 26 allows you to return to your sweep, eliminating the projection phase game is initiated. · As a result, Streiferfinger 27 und.der A withdrawn and into the in Pig. I moved back.

Starting position

lbst.reiferra.emen

While the movie is projected, it can be paused and in

Backward projection are presented

Shift lever 36 raised from its illustrated (forward)

Position in an extreme lower (back

represents. In addition, the projector is mi ·; a repetition

device provided by means of which the

back to- :

This projection work causes the ab- ■

30 positions shown by the cassette

by manually adding a

downward) position

Operator each

rewind the desired section of film and then repeat can perform by manually moving a repeat lever 37 backwards to temporarily stop the rewind mechanism

nism to set in motion, ι

ι ■. It will now be discussed in more detail on rewinding. D8S rear end of the film 2k- in the cassette on the spool is attached to the core of the spool. Hence causing the tightening! of the film between the film carrier and the spool, which occurs as soon as all of the available film has been wound out of the cassette, so that the guide 32 pivots down into a position in which a shoulder 39 of the guide 32 releases a release lever 38 touched and depressed. Depress the release lever 38

initiates the rewinding phase of the projector work game, whereby the film carrier is opened: and the film pull-through gripper is withdrawn from this and with a forced . Rewind rotation of the spindle 18 is caused. In addition, the spindle Ik- is decoupled from its associated pulley so that the spindle Xk- is freely rotatable when the film is being unwound from it. Hence the film itself

9831

active completely into the cassette through the film stage

i
rewound through. The cassette can then be removed from the projector with the film wound into it. The spindle 10 is rotatably mounted on a movable support arm 40 which is mounted on the projector housing such that it can pivot about an axis kl; The arm 40 is adjustable between a lower position, which is shown with solid lines in FIG. 1, and a raised position, which is indicated in FIG. 1 with dash-dotted lines. The exact angular position which the arm 40 'assumes in the lower position depends on the size of the cassette 21 to be used, as will be described in more detail later. In the raised position of the arm 40 indicated in FIG. 1, a conventional unencapsulated film supply spool 42 can be mounted on the spindle 18, and the threading of the film can in this case be carried out manually by the operator. Suitable coupling devices, which are not shown, can be provided in order to bring the spindle 18 with a drive device Ln which is arranged within the projector housing.

As shown in FIG. 1, an elongated bearing surface 43 is formed on the housing 11, with which the underside of an am Cassette attached to the projector. In order to attach the cassette to the projector, the bobbin 20 on the end of the spindle 18; attached ^ and the support arm 40 is then together with the cassette 21 and the bobbin, 20 pivoted down until the bottom of the cassette Mib of the bearing surface 43 comes into contact.

As shown in Fig. 4, the lowest angular position depends on the Arms 40 of the different diameters of the bobbin and accordingly on the different cassette sizes

from, because cassettes of different sizes have a different

90983 1/089 8 ^ßAD

- ίο -

large distance between the underside of the cassette and the in the side wall recessed bore for the engagement of the spindle 18 is present. In addition, the horizontal position is. ment of the cassette relative to the area ^ 3 in cassettes of different Somewhat different in size when the spindle adopts different positions on a curved path, when tapes of different sizes are to be recorded. The area ^ 3 is therefore preferably sufficient formed long, so that the undersides of cassettes of several different sizes, for example of cassettes for the recording of 15, 30, 6ö or 120 m film length can be recorded. '

It is apparent to the person skilled in the art that suitable clamping or holding devices can be provided which for this purpose serve, the cassette 21 securely in contact with the surface 4-3 to hold, so that the cartridge is held in a fixed position relative to the projector housing. Since it was just described Embodiment, as far as the implementation of the invention is concerned, but mainly only depends on that support arm 40 and bearing surface '^ 3 interact with one another in such a way that that cassettes of different sizes with different sized cassette underside are attached to the projector a more detailed description of the clamping or

Holding devices for the cassette only below.

It is obvious that if during rewinding the supply spindle 18 is driven at a constant angular speed, the film-moving through the film carrier 33a is moved therethrough at a speed equal to the effective diameter of the film roll on the supply spool depends. It can also be seen that when the Coil has a healing small diameter, the Linear speed of the film is relatively low. ; On the other hand, the speed of the film is relatively

90983 V / 0 83 1- BADORiGlMAL

moderately high if the film roll is a relatively large one effective diameter. Similar relationships arise when there are small or larger bobbins, respectively be filled with film according to their entire winding capacity, for example when completely filled bobbins for 15 πι film length or for! 120 m film length are available. As a result, This can reduce the linear speed of the film during rewinding when using reels for larger ones or smaller film lengths and at different on the spools The length of the film can change within very wide limits. ,

As can be seen from Fig. 4, means are provided for adjusting the angular speed of the supply spindle 18 and the spool body 20 during rewinding, which result in such a rewinding speed of the film during rewinding, which is suitable in each case for the present effective diameter of the film roll on the supply spool body. In the illustrated in Fig. 4 embodiment, the end of the arm kO is formed a depending neck 45 which .dient storage of a whole with K6 designated variable sliding resistance. The sliding resistor 4-6 has a resistance element ¹ V? on, which cooperates with a sliding contact piece 4-8, which is supported by a movable arm 4-9 and can be moved together with this. One end of the arm 4-9 is slidably mounted on a rod 50 which is rigidly connected to the extension 4-5 of the support arm 4-0 by means of a suitable non-zipped device. A coil spring 51 surrounds the rod 50 and is held under pressure between arm 4-9 and a suitable stop 52 'attached to the upper end of the rod 50 to urge the arm 4-9 downward, as shown in FIG Fig. 4 is shown.

The other end of the arm 4-9 ends in a bevel, which can mesh with a number of ratchet teeth! which are on a side face of a rod 'i> 3 ausf-e'bi] net.

90983 1- / 089H

The rod 53 is slidably mounted by means of two bolts 54, which are stored in suitable bearings on the projector housing and movement toward or from the end of arm 49 allow away to bring the ratchet teeth into and out of "engagement with the end of the arm'49". When the pole 53 is in the position shown, the teeth are in engagement with the end of the arm 49 and prevent downward movement of the arm 49 relative to the rod 50 under the acting force of the spring 51, but leave one upwards directed movement too. If the rod 53 is shifted to the left on the pin 5, then the ratchet teeth are out Engaging with the end of the arm 49 and this can therefore 'freely under the acting force of the spring 51 downwards move or can be adjusted to a certain position under the action of another device, which will be described later will.

The rod 53 can be adjusted between its two possible positions mentioned by means of an electromagnet 55 which is fastened to the projector housing and has a working anchor 56 which is connected to the rod 53. A helical spring 57 surrounds the armature 5.6 and is held under pressure between the housing of the electromagnet and the rod 53,

"So that these superiors to the position shown in Fig. 4 position ¹ 1

is tensioned, in which the ratchet teeth with the arm.49 in one— and secure it against »moving downwards.

A momentary close when actuated and again inside switch 5% with an operating knob 59 is connected via a current source to the electromagnet 55 in series, and controls the excitation of the electromagnet 55 _t When the button is depressed 59 relative to the switch housing, then, as later will be explained in more detail, the electromagnet '55 energizes and pulls the ¹ rod 53 from the position shown in Fig. 4 to the left ^ so that dip ratchet teeth briefly

90 98 3 1/0 89 S MD «« »

tig come out of engagement with the _t end of the arm 49. This enables the arm 49 to move under the action of the spring 51.

Both the actuating button 59 of the switch 58 and the arm 49 are both actuated or set by the stripper belt drive 28 during its operation of stripping off the beginning of the film. There are two main working positions for the belt drive 28, one of which is indicated in FIG. 4 with solid lines and one with dash-dotted lines. When the belt drive 28 is moved from the position indicated in dashed lines to the position shown in solid lines, the belt drive engages the cassette 21 so that the belt comes into contact with the outer turn of the film roll, whereby the film cooperates is stripped with the stripper finger 27 from the film roll and guided out of the cassette. Accordingly, the situation is the. the belt drive / inside the cassette during the ripening process, indicating how large the effective ** diameter of the film roll on a spool is for a given cassette size. Part of the belt drive 28 has a protruding arm 60, the end portion of which can come into contact with the arm 49 and can move it into an adjustment position when the belt drive 28 moves from the position shown in phantom to the position shown in solid lines will. A second protruding arm 62 is connected to the belt drive 28 via a joint (not shown) so that the arm 62 briefly touches and depresses the actuation button 59 of the switch 58 when the belt drive 28 begins to engage mij; : To move the cassette 21.; Therefore, the switch 58 is momentarily closed to energize the electromagnet 55 and move the rod 53 to the left ^ so that the arm 49 is released for movement under the influence of the spring 51. The arm 49 is therefore moved downward until eV hits the protruding arm 60 of the belt drive 28. The wide right

"9 0 9 8 3 17 0 8 9 8 BAD ORIGINAL.

Movement of the belt drive 28 towards the cassette 21 causes the arm 60 to move the arm 49 so far upwards that until the belt drive 28 contacts the film. When the belt drive 28 is subsequently withdrawn from the cassette is, the arm 49 remains in 'the upper position in which it was moved by the arm 60. During the downward movement of the belt drive 28, the articulated connection between this, and the arm 62 so that the arm 62 is pivoted when it passes the control button 59, so that a repeated Excitation of the electromagnet is prevented. Therefore . remain after the belt drive 28 from the cassette Completion of the stripping process is withdrawn, the arm 49 and the sliding contact piece 48 in such a position that It is characteristic of the effective diameter of the Pilmwik on the bobbin 20.

Since the resistance element 4? through the extension 45 of the arm 40 is worn, depends its ^ division relative to the sliding contact piece 48 on the angular position of the; Support arm 40 and thus depends on the size of the cassette attached to the projector. This creates a compensation effect through which the error is compensated that would otherwise be caused by changes in the angular position of the support arm 40 when using cassettes different sizes would be introduced.

The electrical circuit will now be explained in more detail. The upper end of the resistance element 4? is connected via a resistor 63 to a connection L, a current source, of which its connections L ₁ 'and L ₉ are shown. The other connection L _{2 of} the current source is connected to the lower end of the resistance element 4? tied together. The sliding contact piece 48 is connected via a second rectifier connector 65 to the base of a thyristor 66, the emitter of which is connected to the terminal L and the collector of which is connected to a terminal 6 $ of a motor 68

309831 70898

BATH ORIGINAL

are bound. The other connection L _{2 of} the power source is connected to a second connection 69 of the motor 6, 8 to complete the circuit

'1, available universal motors. It is well known that such Motors in a simple way 'through a; To control thyristor circuit of the type described above so that they are with a desired fixed speed.; As' schematized in Fig. 4 indicated is.t, the shaft of the motor 68 is via a Bückspulkupplung not shown in drive connection

with the spindle 18. 'j f

In the operation of the embodiment shown in Fig. K , the arm kO and the resistance element 47, when a cassette is initially attached to the projector, assume such a position which is indicative of the size of the cassette. When the belt drive 28 is then brought into engagement with the film roll located in the cassette in order to strip the beginning of the film from the roll, 'then the arm 4-9 is moved upwards and the sliding contact piece 48 is set in such a position, which is indicative of the effective diameter of the roll. The position of the sliding contact piece 48 relative to the resistive element 47 'forms a set point for the driving speed of' the engine during the rewinding, which is carried out after completion of the film projection. The thyristor circuit described above operates in ^one known manner to this adjusted working speed of the motor upright so that the spool 20 is driven at an angular speed during rewinding which is related to the diameter of the film roll. If desired, the set point can be chosen so that the optimum rewind speed is obtained when the spool is half full. '

It is obvious that in realizing the invention a variable speed motor can be used,

909831/089 b \ ■

BAD ORfQJNAL

which is separate from the usual 'pro j ek. door drive motor and is only used for rewinding. However, it can only be one single variable-speed motor! be provided to both the film passage device of the; Projector as well

: ν j - ■

to effect rewind ^

That in Pig. The embodiment of a projector according to the invention shown in FIG. 5 is on the whole similar to the embodiment described above and has a substantially rectangular housing 111, from which a housing compartment 112 extends sideways to the right. The housing compartment 112 carries a forward-facing projection lens 113. Above the housing compartment 112, a rotatable film take-up spindle 114 extends beyond a perpendicular wall 115. Several film take-up spools of various diameters can be attached to the spindle 114. The smallest in question _; Upcoming take-up reel is marked with it -116 and with. shown in solid lines. The outlines of two larger take-up spools are indicated with dashed lines and labeled raitM6a and liob. >

In front of take-up spindle U4 is a similar film supply spindle 11? arranged, which also extends over the wall 115 extends addition and which serves to a film supply spool 118 to store and to rotate. The spool 118 is housed within a film supply cassette 119, attached to the projector! The solid lines correspond to the representation of the take-up spools Drawn storage cassette II9 for a low capacity designed and the outlines of two similar "but larger cassettes, denoted by 119a and 119b, respectively are indicated with dashed lines. The ones in the different sized cassettes 119 »H9a and 119b housed Coil bobbins have correspondingly different diameters

9098 317 0898

BATH

-Ί7 -

knife and can therefore film rolls 121, 121ä and 121b

different sizes. ', carry diameter shows are. '

as shown in Fig. 7

As has already been suggested for film supply cassettes. ^ de, all cassettes have, similar, serving as fitting links Ribs 122, as shown on the cassette 119 in FIG. These ribs can be mated in recesses 123 are added to the wall 115 of the projector are trained. In addition, there are locking breakthroughs 12 * 4- in each cassette, each in a similar position relative .zu ι the ribs 122 are recessed. , In the Durich breaks 124- can ■ detachable tendons 125 engage, pie up through opening ', gene 126 of the wall 115 extend therethrough. Through this Sp ^ ann- I members 125, a cassette attached to the projector can be releasably clamped in its working position.

From Figs. 5 and 8 it can be seen effect between the ribs 122 verse with the recess on the projector the d Cartridges so fixed on the projector

that by joining large cassettes There are three different sizes that the turning

axes of the hubs of the associated bobbins in three different predetermined positions run. As will be described in more detail later, (the supply spindle 117 in these predetermined different positions are brought,) so * that the pilm supply bobbin can be rotatably supported, whichever cassette is always attached to the projector.

When the cassette 119 on the projector fe

it is excited then

is its slotted lower part 127 (Fig. 6) on a slot 128 in the projector housing and aligned with a scraper and threading device, one wiper finger 129 and .eine stripper belt drive 133-. About the operation of stripping * the front beginning of the film from the film roll and threading the same ii ?. the projector in, corridor

9 0 9 8 31/0898

ORIGINAL INSPECTED

-, 18 -

To set, the wiper finger 129 moves out of the in Fig. 7 at 129c indicated by dashed lines ineffective position in its working position, wie.sie is shown in this figure with solid lines, with the tip of the finger in contact with the outermost turn of the film roll 121 on the ! Bobbin is located. At the same time, the scraper belt drive swivels 131 counter-clockwise around a shaft serving to support the belt drive ^ 132-ia from its ineffective position ^ which is shown with a dashed line at 131c, in its working position, the one with the extended Lines shown represent the circumference of a squeegee belt 133 comes into contact with the outermost turn of the coil. In this work cycle, there is an a suitable coupling device is set so that that the supply spindle 117 rotate in the unwinding direction can. The Abstreiferrlemenantrieb is constantly contrary driven clockwise and therefore rotates the Pilmwik

i kel in ^{Abwickeldrehsinn:} ie Uhrzeigersinna. Accordingly, the front end of the film is separated from the roll by the wiper finger and is led out of the cassette in a narrow guide channel that is formed between part of the wiper belt drive and the adjacent edge of the wiper finger.

From Fig. 7 it can be seen that in the various positions the axes of the three bobbins of the belt drive I3I around

the shaft 132 can be pivoted into contact with the periphery of each of the respective film rolls 121, 121a or 121b, with the belt drive in the various positions shown at I3I, 131a and 131b, respectively. The wiper finger 129 can also be moved into various working positions, which are indicated at 129, 129a and 129b, by means of a suitable linkage on which the finger can be arranged, for example, in such a way that it is resiliently biased against the film roll so that he is with

q -J. / Λ ό Λ Ο

ORIGINAL INSPECTED '

can cooperate different Filmwickelm 121, 121a and 121b and therefore can lead out the leading end of the film from the cartridge _s wi & described above, -ungeachtet of which of the size; The cassette attached to the projector has _o Weiki · the front end of the film over the wipe of the stripper _; and the guide channel formed by the wiper finger has progressed, it runs into the open end of a further guide channel 13, which is shown in FIG. 7 \ isüo shown a result, the 'film is introduced into a FilmbülBie where it ι with a film pulling gripper or other Filmdarchzügsmeehanismusrir. Engagement - is _β Mach passing through the film carrier passes through the vorde- ™ te film end a further {guide -.zu the film a $ chwenkbar mounted threading arm 135 leads (Figure "5) through · ι. The film is steered to engage the; The hub of the take-up reel comes, which is attached to the spindle 114 and that the film is automatically attached to this hub in such a way that it is taken along when the winding is turned. If the operation of the film loading ^complete.:. Completed is _s the Abstreiferfiriger and Abstreiferriemenantrieb are moved back to their inoperative positions, which are shown with dashed lines at 129c or "131c in Figure 7 · Unteii then out winding of the film from the cassette, the projected film and wound up on the Aufviiekelspule "the film trailing end is secured to said hub of the ¥ orrratssipulenkörpers, so that the film pulled taut wJird _s if the whole available to longitudinal film is projected. This triggers the rewinding process ^ whereby the film carrier is opened, the film pull-through mechanism is put out of operation and the supply spindle lh? counterclockwise ■ ·? _fl 'is set in rotation while at the same time the film winding spindle. 11 ^ is entered for free rotation fi ^. Therefore _ the film is completely rewound in the cassette.

909-831 / 0898

-.20 -

after which the cassette with the rewound film can be removed from the projector. ",

8 and 9 show the structure of the mounting for the spindle 117, which enables this spindle to be set manually in such positions in which it is used to mount three different sized bobbins, their respective positions are shown in Fig. 7. In the present advantageous embodiment of the invention, the film supply spindle 117 has a spindle journal 135 'which is attached to the end of a horizontal shaft I36 which is rotatably supported in bearing bushes 137, 138 which are held by a support body 139 The support body 139 · is

in turn pivotably mounted on a shaft 14-1, the between 'parallel sides 1 * 1-2, 14-3 of a support arm 144 extends. The two side plates 14-2, 14-3 are by an upper web 14-5, which with; the side plates; together forms a single continuous piece and is held rigidly in a mutually parallel position by a bolt 14-6 which is riveted to both side plates. A shaft 14-7 extends through: bearing bushes 14-8, 14-9 in the side plates through ah the end of the support arm, the the spindle 117 is opposite L The shaft 14-7 is in;

i fixed bearing blocks I5I rotatably mounted. A verse

i "ι

adjusting lever 152, which is a single with the side plate 14-3.

forms a coherent piece, extends forward ■ through a slot 153 in a vertical end wall of the housing lll: .and enables the support arm 14-4- manu- · swivel around the shaft 14-7 and in different

Bring angular positions. ■ ·

¹ i

A pulley 157 is the inner end of the bearing bush 138 attached adjacent to the shaft I36 and is via a

Drive belt I56 with a »similar

9098 317 0 89 8

Pulley 155

ORIGINAL

bound, which is fixed on the rotatable shaft 1 * 1-7. Outside the bearing bush 138, a cam feeler roller I58 provided with side flanges is rotatably mounted on the shaft I36. Outside the cam follower roller is a locking ring 159 at the end of the? Shaft 136 ^: attached to this, as a result of which the cam follower ijolle I58 is held in the position shown, adjacent to the bearing bush 138j. As the circlip 159 and the pulley. 1-57 relative to the shaft I36 can be axially cut universally, the 'spindle pin 135' remains permanently in the axial position shown, in which it passes through a slot 161 in the wall. μ 115 extends through enough so that a spool can be stored on the spindle journal, which is located inside a cassette attached to the projector. A pulley 162 attached to shaft 157 is not shown by any suitable means. make motor drivable wiü. This causes the spindle II7 to rotate via the drive belt JI56. As already mentioned before, there are also coupling devices in the drive system, the spindle. Arrangement devices or the like, which are not shown, are arranged in order to enable various rotary movements of the pilm supply spindle 117 during various operations of the projector.

A vertical cam plate or control plate ^! I63 is fixed to the device in the position aligned with the cam follower roller I58 by means of screws 16 * 1 screwed into fixed bolts I65. Along their front edge; the control plate 163 forms a cam surface 166, the three arcuate notches 167, % 67 & and I6? b. which are each aligned coaxially to one of the three desired positions of the spindle 117. The radius of a hub portion 168 _; the. Cam feeler roller 158 has the same radius as the notches and is in contact with the cam surface 166, which is from

9 0 9 8 3 1/0898

16169

Side flanges Ι69 of the ijockehtastejrrolle I58 is forked. The drive belt I56 is 'made of rubber': or a similar elastic material and therefore holds the cam feeler roller flexibly in contact with a pretension, on the cam surface 166 ... the drive belt I56 is supported, insofar as this should be necessary, by a helical spring 171, which is stretched between the support arm IW and the support body 139. Therefore, when the adjusting lever I52 is in the position shown in Pig; 9 is moved position drawn with solid lines, then the spindle pin 135 ^{1 is held} in the correct position in which it can accommodate the hub of a spool of the smallest of the three cassettes. When the height 152 is moved upward into its middle position, which is indicated at 132a with dashed lines, the lock feeler roller 158 leaves the notch 167, the belt 156 and the spring 17l being pulled and falls into the notch 167a, see above that; the spindle journal 135 'is fixed in the position in which it can accommodate the hub of a bobbin of a medium-sized cassette 119a, as shown at 135a in FIG. 7 and as also indicated in FIG , where the shaft of the spindle in this position is denoted by 136a, in a similar manner

i
is on further upward movement of the lever 152 in the

P position indicated by dashed lines at 152b Cam follower roller brought into engagement with the uppermost notch 167b, wherein the spindle journal and the spindle shaft, like this at 135b and 136b in the Pig. 7 or 9 is indicated, be set so that the spindle pin 135 ' the hub of the spool of a largest cassette 119b -to accommodate and can store. From the foregoing description, therefore, it can be seen that the screw journal 135 'is optional can be set to one of three predetermined positions by manually moving the adjusting lever 152.

By a dot-dash line in Fig. 9 '

9 0 9 8 31/0898

172, which is the arcuate path

Pivoting movement about the axis of the shaft I57 shows will

makes it clear that the three working

of the shaft 141 at the

positions of the spindle

Aspen not along an arc around the pivot axis of the support arm 1) 44 "are arranged. Depending on the profile of the Cam surface 166 can ^ for example, the working positions be arranged along a straight line 173. However, when it comes to designing a particular projector is feasible, the axes of the bobbins of the different To arrange cassettes along an arc of a circle,

the center like the axis of rotation of a pivotable spindle. ... · ■ .- es ™

is support arm, then a somewhat simpler / exemplary embodiment of the invention can be used, as in Pig. 10 is shown. Here, the spindle 117 is rotatably mounted directly on the support arm 176, which is largely similar to the support arm 144 described above. Accordingly, the spindle extends parallel to the pivot axis of the support arm, which is formed by the shaft 147, so that the. various positions that the spindle can assume, lie along a 'circular arc 177 drawn with dash-dotted lines and have a constant radial distance from the pivot axis of the support arm. Since dije cam follower roller and the control plate. Cooperating with this, for the Einstel- (lung of the spindle are unnecessary, these parts can be omitted and replaced with other suitable locking devices, which are not illustrated and which allow a Ver.stellhe "Bel 178, which is fastened to the support arm, can be releasably fixed in predetermined positions. However, it can be seen that a structure of the spindle bearing as shown in FIGS. 8 and 9 should be preferable in many cases Since the elimination of the need for the various spindle settings to be arranged on one and the same arc around the pivot axis of the spindle support arm, there are more unlimited design options for the construction.

90983 1/0898 ⁰ ^ OlNAL i _mPi

give

Must pen "In Figs. 11 and 12 8In ₁ further embodiment. Shown in which more" are shown ways to make a movement of the spindle ^ wipe to cause three Work divisions that ni & frt necessarily on a common circular arc lie /. In the pig. Parts shown 11 and 12, which correspond to parts of FIGS. 8 and 9, are denoted by reference numbers increased by the value 100 compared to FIGS. 8 and 9. Other parts have been given newly introduced reference numbers. ·

In the present embodiment, there is a spindle support arm 200 is provided at one end 202 with an adjustable, pivot bearing 204 which is passed through a longitudinal hole 206 in the end 202 and one white each 208 is formed, which is at one Wall 209 of the projector is mounted. The shaft 208 is threatened on the projector relative to the (housing in order to be in the already Yorher in the description of the exemplary embodiment according to

Figs. 8 and 9 explain one another

Spindle shaft 236

to drive. However, the shaft 208 is relative to the 'projector-' Housing cannot be moved sideways and therefore acts as a loading device

tensile body around which the support arm 200 1

.not just swiveled

can be, but relative to that by means of the elongated hole 206 also a longitudinal movement of the support arm 200 is possible iet. . ; '.

The positions of the | Spindle (in this case in

three) are determined by a stop device 210 which has a bushing 2% k , which is rotatably mounted on a pin 212 which is attached to the support arm 200 and extends sideways from this is formed in the wall 209,

Control surfaces formed. The slot

216 can be any

Shape and shape have so that the support arm lengthways any desired Path is guided, with a circular arc conveying

90 9 8 3 V / Q 89 8

ORIGINAL INSPECTED

9816169

A moderate orbit is possible, but one is not limited to such a \. The one in the Pig. 11 and 12, the slot 216 is straight and therefore leads the spindle shaft 236 in. . along one

· ■ -. ·: · Running line ^ ·

to slot 2Γ6 almost parallel / lying positions .. Man can also, this is just7: j.ri "Fig." 11 indicated the wall 209 of the projector provided with exchangeable plates 217, each having a differently shaped slot 216 have so that the path along which the spindle shaft is guided can be chosen as desired by; the Plates 21? according to replacement

In order to detachably fix the support arm 200 in one of the positions, a ball is shown which, in the case of the A shown, is angularly offset from one another and has 224 in the wall 209 (or in the wall 209 (or in the wall 209) and which is arranged on the support arm 200, is.
an opening 230 of the support arm, 200
spring 228 is resiliently urged to push the opening 230 through, but not completely pass through the opening, since the width of the opening is the diameter of the ball 226. On the other hand, the] is sufficiently large

nschten angular positions / locking 218 example three wells 220, ■ plate 217, if one e a bearing ball 226,) the ball sits in. : nd is through a, leaf die Bullet through the t. The ball 226 can g des: arm 200 towards, -mg 230 smaller than that

ride the opening is making a 'famous

tion between the one extending through the opening Part of the ball and the wall 209 or one of the depressions 220, 222, 224- can take place j. The depressions 220 to 2 24- have surfaces that run inclined at the edges and the ball 226 can therefore move against the force of the spring 228 on these inclined surfaces move upwards so that the support arm 200 is between the. by the wells 220, 22 * f defined positions. can be pivoted. Put the arm back into a position

909831/0 89

ORIGINAL WSPECTED

\ i

24

98161-69

moves to which one of the depressions is assigned, then the ball falls under the action of the spring 228 into the depression one and holds the support arm 200 with the relevant recess locked so long "until a stronger force engages on the support arm, which is sufficiently large to move the ball back over an inclined edge surface of the To let the recess emerge from this.

l ■

In operation, the spindle can be moved into and between working positions of your choice by adjusting an adjusting lever 252. When the lever is moved upwards, the support arm 200 is guided along a straight line in that the pin 212 and the bushing 21 * l move into the slot 216. When the spindle moves in this way, the support arm 200 pivots the shaft 208 and atyßerdem also moves longitudinally relative to the shaft 208 corresponding to the greater distance between the spindle shaft 236 and the shaft 208. When it reaches its uppermost position, such as it is indicated with dashed lines in 'Fig. 11, the ball 226 falls into the; recess 22 ^ so that the support arm 200 and ^{: the} spindle are precisely fixed in this uppermost position. In a similar manner, the spindle can be moved into various other positions, for example into a lowermost position to which the recess 220 is assigned. ·

13 shows a further modified embodiment which is similar in some respects to the embodiment according to FIGS. 11V and 12. . Parts <those of the ^'s correspond to the embodiment according to Figures 11 and 12, therefore, are ^in: 13 denoted by reference numerals increased by 100 compared with FIGS 11 and 12. FIG... In this embodiment, the spindle is not in one of its selected working positions by a ver— '

wells cooperating, ball secured, as it is with the

909831/089 8,.; .... «WINM.

Embodiment according to Pig. 11 and 12 is the case, but is secured by a pin which is guided in a widened slot. In this' embodiment, ^1-* is therefore the support arm 300 includes a sleeve; 314 mounted rotatably on a Sti'f _v t 312 and fixed to the arm 300 \ extending laterally in a control surfaces forming 'slot 316th The slot 3Γ6 has

three extensions on one side

318j 32,0, 322 on, de

Its width is somewhat larger than that of the sleeve 314, so that freely join in or out of the distribution

if · '· M

can move this out. In addition, the arm 300 is f tel. a spring 324 biased to the left, as shown in FIG Fig. 13 is shown. The: spring 324 is on a bent one Tail 326 of the Anna 300 and ah one from the wall 309 of the projector bent tabs 328 attached so that the sleeve 314 of the arm 300 in a selected one of the Widenings 318, 320 i or 322 is pressed into it. During operation of this exemplary embodiment, the support arm 300 and the spindle shaft 336 can be inserted into the widening 322 associated upper position can be moved by moving the adjusting lever 352 against the force of the spring 324 to the right moved until the sleeve 31: 4 out of the widening 320 is moved. Then the lever is moved upwards until the

Bushing 314 through the spring 324 in the widening 322 "

i is moved into it. Similarly, arm 300. in a lower position can be moved that of the widening

318 is assigned. ι!

• I

In the previous exemplary embodiments, an adjusting lever 152, 25 (2, 352) is shown. It understands sj.ch however, that one could also be omitted. ' and that in this case the spindle itself or its spindle journal could be taken instead of a lever to move the support arm between its working positions.

909831/0898 «*» * «. ιμρββπβ

Claims (1)

Bobbin 1 · Cinematographic projector with a projector housing movably arranged del for receiving a is, characterized in that fi different sizes
which are housed in cassettes (21, 119, 119a, Ben, am.: at least one stop surface (43) ν, which is attached to the projector housing 119b) and is thereby aligned in the jektor, and that the 200, 300) of the spindle (18 , 117, 136 is dependent on the size of the cassette in which the spindle is located coaxially to the projector attached cassette (21. Ν öinem relative to proane Carrier, / to which a spin Filnworrats bobbins Projector housing more predetermined rotatably mounted for the use of (20, 118), ll | 9b) of various sizes (11, 111) is on the cassette (21, 119, 119a, Position on the PrQ carrier (40, 139, 176, 236,, 336) in a Movable position of the coil body on the 119, 119a, 119b) 2. Projector according to claim 1, characterized in that a spindle support arm (40, 176, \ 200, 300) mounted pivotably on the projector housing (11, 111) is provided as a carrier for the pilm supply spindle (18, 117, 236, 336). 3. Projector according to claim 2, characterized in that the spindle support arm (40, 176, 200, 300) is mounted at one end on the projector housing and that the spindle (18, 117, 236, 330) is mounted at the other end of the spindle support arm . '' ί '- 4. Projector according to claim 2 or 3, characterized in that the support arm (200, 300) is relative to its pivot axis (208, 308) is slidably mounted. < 909831/0898 ORIQlNAL / 5 * Projector according to Claimjl, characterized in that the support (139) for the Pilmvorra is adjustable on a support arm (144) *, in turn, pivotable on the projector is gert. ' · characterized that bsspindel (117, 135 ') is stored, the »housing (111) loaded Projector according to claim k or 5, that one with the carrier (139, 200, spindle (117, 236, 336) cooperates with 166, 214-, 216, 31Λ, 3I6). provided during the movement of its carrier (13 <one marked i, 300 deviating from an arc of a circle) of the "film supply-- '■ kende guide (I58, \ is to guide the, spindle ^; 200, 300) along the path. arranged Projector according to Claim 6, characterized by a guide that is fixed to the device (166, 216, 316) and a cam switch device attached to the spindle support marked that 'Control surface (139, έΟΟ, 300) of the (158, 21 * _t are provided, which are provided by e.inje spring force (171, ¹ ^ o Ά are frictionally inten with each other. ^v . 8. A projector according to claim 7, characterized a belt (156, 256, 356) for the pulley (157, ^257; 357) of the W of the spindle is used and that vorgesehen- for the R a stretchable material 9. Projector according to one of the! Claims indicates that as a stop flat side (127) of the cassette < (21, 119, ■ acting bearing surface (* Κ3) ^: for this: 10. Projector according to one of the claims by serving as fitting links on the pr <|> jector 90 983 17 0 898 ^ e indicates that the drive is a aie (136, 236, 336) learning (156, 256, 356) .st. . up to 8, thus "joint! one with the under-19a, 119b) is provided together. to 9, marked (115) and on the [NSPECTED Cassette (120, 119, 119a, 119b) formed in a complementary manner Surface irregularities {1J23 or 122). 11. Projector according to one of the., Claims net. by means of an adjustment device for the optional Söhwenkeh of the Trägeis the spindle about the pivot axis of the same 1 to 10, marked- (152, 178, 252, 352) (139, lY6, 200, 300) 90983 1/0898 ORIGINAL iNSPECTEO