DE615349C - Two-part film reel for cinematographic apparatus - Google Patents

Description

The invention relates to a film reel for cinematographic apparatus, which is very simple and most convenient way of inserting and clamping as well as holding the end of the film enables.

This is achieved by a known two-part film reel, the side panes (Flange) are provided with interlocking, the coil core forming approaches, is designed so that the latter from consist of a wreath of spaced-apart webs or projections, which move against each other in a tangential direction under the action of a spring strive to clamp the end of the film between its longitudinal edges and to hold it releasably. There are external Web extensions of the side window of a film spool core part by a disk under connected, between its inner surface and the opposite edges of the Flange webs form slots through the webs of the side window of the second FiImspulenkerneils part pass through and find their longitudinal guide therein, the guide slots to located edges "of the web extensions serve them as a stop.

An embodiment of the subject matter of the invention is shown in the drawing, namely Fig. 1 shows a top view of the film reel, Fig. 2 shows a cross section through the parts forming the reel core, side panel to the inner core part indicated in dashed lines, Fig. 3 shows the web parts forming the outer core part Side window, connecting means indicated in dashed lines.

Slices a, b are partially punched out, and the material released as a result, if necessary, bent at right angles to the former so that approaches a ¹ , b ¹ are formed, each of which affects one another in such a way that they are pushed into or over one another like a sleeve can turn from, to and around each other and "together form the winding core of the spool for the film /.

The front ends ar of the lugs a ¹ are pressed into corresponding recesses d ^{1 of} a connecting means, in the illustrated case a disk d, and thus fixed to this and to each other.

The A ^s of the lugs ^a1 of the disk α between edges and inner surface d ^'1 of the disc d by forming slits S serve between the recesses b- remaining portions b ^s for warehousing and the end of slot s ¹ of the edge b ⁴ · stops when, as Fig. 2 shows, the disks α, & are rotated towards each other by pressing the thumb of the hand against edge b ^5.

"During this process, the other fingers of the hand partially grip the edge α ^{3 of} the recesses a ^{B of} the disk α

*) The patent seeker stated as the inventor:

Dr. August Nagel in Stuttgart.

or lie against the outer surface of the latter.

The edge b ^{6 of} the lugs b ^{x of} the disk b leaves the longitudinal edge α ^{4 of} the lugs a ¹ . This creates a free space between the two longitudinal edges, which is used for easy threading of the film /, ie its end piece f ¹ .

Then gives the thumb the disc b

ίο free, the previously tightened spring e pulls the parts a \ b ¹ towards each other, and the longitudinal edges b ⁶ , α ⁴ clamp the film tight, since the spring ends e ¹ , e ^{2 are} attached to pins g, g ¹ , from one of which is on disk a, the other on disk b .

Claims (8)

Patent claims: i. Two-part film reel for cinematographic apparatus, the flanges (side disks) of which are provided with lugs which can be plugged into one another and form the spool core, characterized in that each of the lugs consists of a ring of spaced-apart webs or projections (α ¹ , b ¹ ) which, under the effect a spring (s) strive to move against each other in a tangential direction. 2. Reel according to claim 1, characterized in that the outer part of the core of the film reel forming parts (α ¹ ) are designed at their outer ends so z. B. projections (α ² ) that they can be connected to these by a connecting means, such as. B. disc, ring (d), can be interconnected. 3. Coil according to claim 2, characterized in that the web-like between the coil side disc (a) and web connecting part (d) extending ^{lugs (α 1} ) with these recesses or slots (s) form in which the Seitenicheibe (b), which with their lugs (A ¹ J forms the inner part of the coil core, is rotatable, and that the inner ends (s ¹ ) of the lugs (a ¹ ) as a stop for the edges (b ⁴ ) of the webs (b ³ ) of the disc (b) serve or are designed. 4. Coil according to one of claims 1 to 3, characterized in that the lugs forming the core (α ¹ , b ¹ ) are punched from the side walls (flanges) (a, b) of the coil and are bent perpendicular to them. 5. Coil according to claim 3 or 4, characterized in that the lugs or bends (b ¹ ) of the side panel (&) ^{forming the inner core part at their longitudinal edges (α 4} ) of the lugs (a ^l ) of the outer core part nearest longitudinal edges ( & ⁶ ) are directed outwards in such a way that both longitudinal edges (α ⁴ , i> °) lie against each other. 6. Coil according to one of claims 2 to 5, characterized in that the web connecting part (d) with its inner surface ((P) is the abutment (guide) for the side window (b) of the parts carrying or forming the inner core part. 7. Coil according to one of claims 1 to 6, characterized in that the spring inside the lugs forming the coil core (α ¹ , b ¹ ) of the side discs (a, b) on projections (g, g ¹ ), each of which has one the disks (a, b) is assigned, each with one of their ends (e ¹ , e ~ ^{:) is} attached. 8. Coil according to one of claims 1 to 7, characterized in that, for. B. recesses (α ⁶ , b ² ) of the side panes (α, b) with their edges (a ⁵ , W) are designed as grippers for triggering the clamping means (α ⁴ , b ⁶ ) of the film (/). 1 sheet of drawings