US1225905A - Film-winding device. - Google Patents

Description

D. P. WHITESELL.

FILM WINDING DEVICE.

APPLICATION men MAR- 30. I916.

Patented May 15, 1917.

3 SHEETS-SHEET D. P. WHITESELL.

FILM WINDING DEVICE.

APPLICATION FILED MAR-30.1916- Patentefi May 15, 1917.

3 SHEETS-SHEET 2.

D. P. WHITESELL. FILM WINDING DEVICE.

APPLICATION FILED MAR-30,1916- Patented May 15, 1917.

3 SHEETS-SHEET 3.

EM Q m gwuc'ntor fiawid l? Wiaii'esell;

DAVID 1P. WEITESELL, OF @BEENVILLE, @HIO.

FILT=WINEING DEVICE.

Specification of Letters Patent.

Patented May 15, rear.

Appttoation filed March 80, 1916. serial lto. 87,760.

without rewinding.

An object of my invention is to provide a device of the character described wherein there is a minimum of parts and a positive feeding means for the film. An object of my device is also to so construct the several parts that the film receiver may be readily withdrawn from the device.

Another object is to provide a device of the character described wherein said device will automatically reset itself when the wound film is removed from the device.

A still further object is to provlde a device wherein the receiver for the film is rotated at a continuously increasing speed, thus compensating for the constantly shortening of the winding periphery of the film receiver.

The invention resides in certain novel apparatus for accomplishing the purpose stated, the novel principles as well as the structural and cooperative features of wh1ch will be pointed out through means of a preferred-embodiment selected for purposes of illustration; also in certain details of construction of the said preferred embodiment of such apparatus, all as hereinafter fully described and particularly pointed out in the claims.

In the drawings- Figure 1 is a side elevation of my improved film winding device shown partly in section;

Fig. 2 is a top plan View;

Fig. 3 is an enlarged end vlew;

Fig. 4 is an enlarged detail section taken on the line 4--4 of Fig. 1

Fig. 5 is an enlarged detail sectlon taken on the line 5-5 of Fig. 3, and

Fig. 6 is an enlarged detail section on the line 6-6 of Fig. 4:.

Referring more particularly to the drawings, in which like reference characters designate corresponding parts, 1 indicates a base member upon which is rotatably mounted a film receiving pan 3 in an axially yielding bearing 2. Adapted to extend diametrically across the pan 3 is a frame member 4. that supports the film feeding and guiding means which will be hereinafter more specifically described. One end of the frame member 4 is pivotally ,mounted upon the transverse shaft 5 supported in the bearings 6 of the standards 7 which have their lower extremities connected by a sub-base member 8, adapted to be secured to the base. The other end of the frame member 4 is removably secured to the standard 9 by means of the wing nut 10 and the coactin threaded stud 11. Thus it will be seen t at by removing the wing nut 10, the frame member 4: may be raised or turned upon its pivot 5 in a manner that the film pan 3 may be removed from its bearing 2.

The film F as it is received from the projector (not shown) passes over the rotatable guide 12 mounted in the bearing 13., to the stationary, laterally deflecting guide 14:, and thence over a similar guide 15,. but reversely positioned relative to guide '14. The film then passes between the feed roller 16 and its coacting idler 17, said idler being provided with a bearing in its medial portion that is pivoted as at 18 to the frame member 4 and held in yielding engagement with the feed roller 16 by the coil spring 19, one end of which is secured to the frame member 4. The feed roller 16 is secured to the shaft 20 which is in axial alinement with the bearing 2. The said shaft 20 is rotatably mounted in and held against axial displacement by the bearings 21 forming part of the frame member 4. The lower end of the shaft 20 is rounded and rests upon a bearing plate 22 that in turn rests upon a yieldable member 23 herein shown as a helical compression spring resting upon the bottom of a recess 24: formed in the pan 3. Projecting from the center of the recess 24 in the pan 3 is a pintle 25 which is adapted to be received in the bearing 2 and form the bearing for the rotation of the pan 3. If desired, the adjusting screw 26 may be threaded into the bottom of the bearing 2 in a manner to limit the axial movement ofthe pintle 25.

By the arrangement of parts herein before stated, it is obvious that the film receiv- I the frame member 4; the other end of shaft ing pan will be yieldingly pressed downward when the frame member 4 is in normal position.

Positioned below the pan 3 and at right angles to its axis of rotation is the rotatable shaft 28. carrying the-friction wheel 29 faxially slidable, but rotatably fixed to said shaft. In the preferred'embodlment of my invention I prefer to form this friction wheel 29 with transverse ribs29 and also to cover the bottom of the pan 3 with rubber or other antislipping material 3 inorder that a better traction may be secured begear 37 meshing with a bevel gear 38 upon one end of a shaft 39 rotatably mounted in 39 is provided with a bevel gear 40 meshing with a bevel gear 41 secured to shaft 20.

Thus itwill be seen that as the pan 3 is rotated the feed roller 16 will be caused to operate in synchronism with it.

Since the film forms successive layers inwardly from the peripheral flange 27 of the pan 3 as the pan is rotated, it is obvious that the film must be fed much faster when the reel of film is being started than when it is completed, or, in other words, the ratio of feed of the film to the speed of the pan I must be greater at the beginning of the to the frame.

winding than at the finishing thereof, and since in practice, the film is received to the device at a constant speed, the speed of the pan must therefore vary, so to this end, I provide a radially extending finger 42 upon the pan 3, which will, upon rotation of the pan, coact with the star wheel 43 secured to the shaft 44, in a manner to rotate said shaft. Shaft 44 is rotatably mounted in a bearing 44 secured to the base 1, and has fixed thereto the worm 45. The friction wheel 29 is connected to a frame 46 slidably mounted upon shaft 28, in a manner as at 47, that the friction wheel may freely rotate on its shaft 28, but, will accompany said frame 46 when. axial movement is imparted A face of the frame is proflange 27 of the pan 3 by means of a suitable clip or other fastening device 48. Power vided with rack teeth 47 which are adaptedto mesh with the worm 45. Thus it will be seen that upon rotatin the star wheel 43 axial movement will be imparted to the friction wheel 29.

In the operation of my device, the film F is passed over guide 12 around the lateral deflecting guides 14 and 15, then between the may be applied at any point of the rotating parts of my device,

but I prefer to apply it to shaft 5, by means of any suitable prime mover (not shown) causing the shaft to rotate the meshing gears 37 and 38, thus transmitting the rotation through shaft 39 and the gears 40 and 41 to the shaft carrying the.

feed roller 16,in turn, causing the film to be fed continuously and at a constant speed to the receiving pan 3. The rotating .of shaft 5 will also to rotate shaft 33, Whichjin turn rotates gears 32 and 31, causing friction wheel 29, to' revolve the pan 3. As the pan 3 rotates, the radially extending finger 42 will cause the star wheel 43 on shaft .44 to revolve step by step. The revolving of shaft 44 will in turn rotate the worm 45 carried by it, and since the worm,

1s normally in mesh with rack 47 on frame 46, the frame will be moved axially toward the center of pan 3, thus increasing the speed of the pan as the film is continuously fed thereto.

When the windingoperation is completed the wing nut 10 is removed from the stud 11,'and the frame is swung outward away from the pan 3, relieving the tension of the spring 23 and allowing the pan 3 to be removed from its bearing 2. As the frame 4 is swung on its pivot or shaft 5, it carries the cam 49 with it. rod 50, mounted in guides 51 and pivoted at one, end to the rock arm 53 downwardly against the tension of-the spring 52, and, by

feed rollers 16 and 17, and secured to the cause the gears 36 and 35 shaft 38, carrying This cam forces the push so doing, the outer end of the rock arm 53 also-prvoted to the standard 7, is lowered. The outer end of rock arm 53 is provided with the anti-friction roller 54 normally in contact with the frame 46 in a manner to keep the rack and worm inmesh, therefore, as the frame member 4 is swung on its pivot the rack 47 is allowed tobe lowered by its own weight, then the contractile sprin 55 connected to the frame 46, and to one o? the bearings 30, will immediately return to the friction wheel 29 carried by frame 46 to its original position, or, in a position for starting the next winding operation.

I claim v y 1. In a film winding mechanism, :a rotatable film receiving receptacle, a feeding means for the film, means for rotating the receptacle and operating the feeding means, and means operated by said receptacle for increasing the speed of the receptacle relaceptacle coacting with a speed changing mechanism for changing the speed of said receptacle.

3. In a film winding device, a rotatable film receiving receptacle, means for feeding film to said receptacle, means for holding said receptacle in yielding contact with a -friction roller whereby said receptacle is rotated.

4. In a film winding device, a rotatable film receiving receptacle, means for feeding film to said receptacle, means for holding said receptacle in yielding contact with a friction roller, whereby said receptacle is rotated, and means for moving said friction roller nearer the axis of rotation of said receptacle in a manner to increase the speed of said receptacle.

5. In a film winding device, a rotatable film receiving receptacle, means for con-.

stantly feeding film to said receptacle, a

driving friction wheel for said receptacle in driving relation with said feeding means, a frame adapted to shift said wheel to and from the axis of said receptacle, a worm adapted to coact with a rack on said frame .for moving said wheel axially, and means for rotating the worm as said receptacle revolves.

7. In a film winding device, a rotatable film receiving receptacle, means for constantly feeding film to. said receptacle, a driving friction Wheel for said receptacle in driving relation with said feeding means, a frame adapted to shift said wheel to and from the axis of said receptacle, a worm adapted to coact with a rack on said frame for moving said wheel axially, and means for rotating the worm as said receptacle revolves, said means comprising a star wheel in driving relation with the worm, and a finger on said receptacle coacting with said a star wheel in a manner tq rotate said worm.

8. In a film winding device, a rotatable film receiving receptacle, means for constantly feeding film to said receptacle, a driving friction wheel for said receptacle in driving relation with said feeding means, a frame adapted to shift said wheel to and from the axis of said receptacle a worm adapted to coact with a rack on said frame for moving said wheel axially, and means for moving said rack out of engagement from said worm.

9. In a film Winding mechanism, a rotatable film receiving receptacle, a frame member positioned diametrically across said receptacle pivoted at one end and removably held at the other, a friction wheel in contact with said receptacle, means for controlling the axial position of said wheel, and means carried by said frame whereby when the same is swung upon its pivot the means for controlling the axial position of said wheel will be rendered inactive.

10. In a film winding mechanism, a rotatable film receiving receptacle, a frame member positioned diametrically across said receptacle pivoted at one end and removably held at the other, a friction wheel in contact with said receptacle, means for controlling the axial position of said wheel, and means carried by said frame, whereby when the same is swung upon its pivot the means for controlling the axial position of said wheel, will be rendered inactive, and means for automatically returning said wheel to its original position when the axial controlling means is rendered inactive.

11. In a film winding mechanism, a rotatable film receiving receptacle, a frame member positioned diametrically across said receptacle pivoted at one endand removably held at the other, a frictidn wheel in contact with said receptacle, means for controlling the axial position of said wheel, and means carried by said frame whereby when the same is swung upon its pivot the means for controlling the axial position of said wheel will be rendered inactive, and upon returning said frame to its original position said. axial controlling means will again become active.

The foregoing specification signed at Greenville, Ohio, this 9th day of March,

DAVID P. WHITESELL.

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