US1399208A

US1399208A - Moving-picture apparatus

Info

Publication number: US1399208A
Application number: US381645A
Authority: US
Inventors: Frank H Grabhorn
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-05-15
Filing date: 1920-05-15
Publication date: 1921-12-06
Anticipated expiration: 1938-12-06

Description

F. H. GRABHORN.

MOVING PICTURE APPARATUS.

APPLICATION FILED MAY 15. 1920.

Patented 1160.111921.

2 SHEETS-SHEET I.

F. H. GRA'BHORN.

MOVING PICTURE APPARATUS.

APPLICATION man MAY15. 1920.

Patented Dec. 6, 1921.

. Illw- YUNITED STATES PATENT OFFICE.

MOVING-PICTURE APPARATUS.

To all whom/it co/zwem:

Be it known that I, FRANK H. GRABHORN, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Moving-Picture Apparatus, of which the following is a specification.

This invention relates to moving picture ap aratus.

ne of the objects of this invention is to make a moving picture apparatus, either a camera or projecting apparatus, which may be operated continuously, without interruptions due to the changing of either the delivery or receivin film reels.

Other objects o this invention are to provide a device which may be used to continuously project pictures, without interruptions due to changing of the film reels either at the receiving or delivery end of the apparatus; to provide a device in which the is protected from fire at all times; in which means are provided for forming slack in the film, whereby suilicient film is allowed for the changing of the film rolls without stopping the machine; and to provide an apparatus which may be attached to an ordinary prgjecting machine.

urther objects are to provide film reel ousings, and lilm housings for both the supply and delivery end of the apparatus; to provide a connecting telescopic passage-way for the film; to provide compartments, which compartments will be fire proof, and will protect the film; and to provide an apparatus through which the film may be readily and conveniently threaded when the machine is initially started.

In the drawings Figure 1 is a perspective view showin a projecting apparatus embodying this invention.

Fig. 2 is a sectional view of the delivery ap aratus, and

ig. 3 is a sectional view of the receiving ap aratus.

ig. 1 shows the general arrangement of the entire apparatus. A projector lis mounted upon a standard 2, and supported from a base 3. To this standard is clamped the receiving apparatus 4, which is positioned beneath the head 5 of the projector, and is connected therewith by means of a chute 6.

The delivery apparatus 7 is positioned at right angles to a plane through the progect- Specication of Letters Patent.

Application nled lay 15,

-iafitented Dee. 6, 1921.A 1920. Serial No. 381,645.

ing a paratus, and the receivin a aratus 4 and) to one side thereof, g pp A telescopic chute S connects the delivery a paratus and the projecting head 5.

1s chute has an angular bend 9 formed therein, and a roller 10 positioned at such angular bend. The upper portions l1 and 12 slide over or telescope the lower portions 13 and 14 so that this chute may be arranged in a room of any desired height. The portions 11, 12, 13A nd 14 are provided with doors 15, 16, 17 and 18, respectively, which are hingedly mounted upon the chutes, and may be opened, suitable latches being provided to lock the doors in closed position.

en these doors are opened the film may be readily threaded through the chute.

e receiving and

delivery apparatus

4 and 7 are conveniently mounted upon legs or stands 19 and 20, which may be secured upon the floor. The receiving apparatus 4 may be further secured to the standard 2 by means of clamping members 2l and 22.

Fig. 2 shows asectional view of the delivery apparatus. This apparatus comprises a lire proof box of slightl greater width than the film, so that the iliin will not tend to twist in the box, but may be caused to fold, under certain conditions, back and forth as indicated in dotted lines at 23. This fire proof casing is divided into two main compartments: a vertical compartment 24, which is in communication with the chute 8, and extends from the upper portion of the casing to the lower portion, and a main-compartment 25 which also extends the full height of the casing. The compartment 24 is provided with a suitable door 26 extending the full length thereof, and hinged at 27 to the partition 28. Figs. 1 and 2; in the latter gure, however, such door is shown partly broken away. The compartment 25 is provided with a small door 29 hingedly mounted at 30 to the lower portion 31 of the compartment, and is further provided with an upper door 32 hingedly mounted yupon a transverse brace 33, extending across the compartment 25, but not passing into such compartment. These doors are secured by means of appropriate latches, so that they may be locked in closed position.

At the point where the iilm 34 passes from the chute 8 into the compartment 24, rollers This door is shown in- 35 are provided which prevent the passageV of fire, either to or from the compartments.

At the point where the film 34 passes from the compartment 25 to the compartment 24, corresponding rolls 36 are provided.

The delivery reel 37 is mounted upon a suitable support 38 in the upper portion of the compartment 25, and may be readily placed therein by opening the door 32. The film is slightly unrolled and hangs down in the compartment 25. The doorA 32 is now closed, and the door 29 opened. The operator then reaches his hand upwardly into the compartment 25, and catches the end of the film, thereafter threading such end between the rollers 36 into the compartment'24. The door 29 is now closed, and the door 26 opened. The operator now catches the film, and draws it upwardly through thf` compartment, finally passing between the rollers 25 and into the chute 8. Thereafter the film is threaded through the chute, access being provided by means of thel doors previously described.- This completes the threading of the film through the compartment or delivery apparatus 7 and the chute 8.

From the-chute 8 the film passes through the projector head 5, through the chute 6 and into the receiving apparatus 4. This receiving apparatus 4 comprises a fire p roof sheet iron casing which is divided into two`

vertical compartments

38 and 39, by means of the partition 40. Access to the

compartments

38 and 39 may be had at their upper ends by means of a door 4l hingedly mounted at 42 to the casing. Access to the lower portion of the compartment 39 is had by means of the door 43. Access to the lower portion of the compartment 38 is had by means of the door 44, which door is suitably hinged at 45 to the casing.

The film 34 is passed from thechute 6 between rollers 46, and into ,the compartment 39. From the rollers 46 the film passes between the

rollers

47 and 47', the roller 47 being a sprocket driving roller, `and receiving its motion through the medium of a belt 48 driven from the projecting apparatus, and the pulley 49 mounted upon the shaft of the roller 47.' -Thereafter the film passes.

downwardly to the bottom of the compartment 39 between rollers 50, and into the compartment 38. From this point the film passes upwardly between guide rollers 51 and to the receiving reel 52. This reel 52 is mounted upon a shaft 53 which is driven from the projecting apparatus by means of the belt 54, and a pulley 55, such pulley being mounted upon the shaft 53.

By providing the

compartments

25 and 39 in the manner, and associated as shown, suitable space or room for the slack in the film, formed at certain times in the operation of the device, is provided. "The operation of the delivery and receiving apparatus will now be described in detail.

The receiving apparatus guides the film in the manner shown in full lines under normal conditions. However, when the end of the film is approached, the operator ope-ns the door 32, gives the reel 37 a spin, thereby unwinding a substantial length of film, and causing it to fold back and forth in the compartment 25, as indicated at dotted lineS. at 23. Thereafter the old reel is removed, a new reel inserted and the end of the old film jointed to the beginning of the new film, such operation requiring a very short time, and sufficient slack being provided in the compartment 25 so that the film may be continuously withdrawn from the compartment 25 without interruption while 'this change is being made.

'Ihe receiving apparatus is designed to provide a reservoir or compartment 39 for the slack film which is formed when the operation of the receiving reel 52 is stopped. When the reel 52is filled and the end of the old film arrives at such reel, its operation is stopped temporarily. 4The feed roll 47 continues to operate, and the incoming film is projected into compartment 39 folding back and forth in such compartment, as shown in dotted lines. `While the slack in the film is being stored in compartment 39 a new reel is positioned upon the shaft 53, and the end of the film started upvon such new reel. The reel is now caused to operate, and the slack is withdrawn from the compartment 39, the film finally arriving at the full line position in Fig. 3.

It will thus be seen that a moving picture apparatus has been provided in which there will be no interruptions of the picture or operation of the machine while either a new reel is being installed, or an old reel removed.

It will also be seen that a ver simple and efficient device has been provided for accomplishing these objects, and that such device may be readily operated, and does not require unusual skill in its operation.

It will further be seen that the film is always protected from creasing or knotting, and that it is further always protected from fire by the arrangements shown.

I claim:

1. A moving picture machine comprising a projecting apparatus, a film delivery apparatus, and a film receiving apparatus, said delivery and receiving apparatus having separated compartments through which the film passes and arranged to allow th-e temporary accumulation of a supply of film upon either side of the projecting apparatus.

2. A film delivery apparatus, for a motion picture machine, comprising a casing having a plurality of compartments; one of said compartments having a reel receiving device adjacent its upper end, and being of substantial dimensions below said film receiving device; means for allowing withdrawal of film from the bottom of sald compartment; and means for providing access to said reel; whereby when the end of said film is approached the reel may be caused to deliver film into the lower portion of the compartment, in which the reel is located, and form slack therein thereby permitting the continuous removal of film by the motion picture machine while a new reel is being installed.

3. A moving picture machine comprising a projecting apparatus,vand film delivery and film receiving means associated therewith, one of said means including a fireproof receptacle, a film reel support therein, said receptacle having an aperture through which the film passes and having a space below said reel support to allow the temporary accumulation of film while a new reel is substituted for the old reel.

4. A moving picture machine comprising an optical apparatus and film delivery and lm receiving means associated therewith, one of said means including a compartment,

a film reel support mounted therein, and a film guiding roller located below said reel support, said compartment having a space below said film reel support to allow the temporary accumulation of film and having an opening through which said lm may pass.

5. A moving pitcure machine comprising an optical apparatus and film delivery and film receiving means associated therewith, each of said means including a compart ment, a lm reel supfport mounted therein and a film guiding roller located below said reel support, said compartment having a space below said film reel support to allow temporary accumulation of ihn, and a chute connecting said film delivery and said film receiving means.

In testimony whereof I ax my signature in the presence of two witnesses.

FRANK H. GRABHORN.

Witnesses:

A. J. MCKERIHAN, O. C. WEBER.