Simplex X-L: Difference between revisions

Revision as of 11:32, 8 May 2020

A 35mm projector made by Simplex.

Threading

For general information about threading projectors, see threading

Rotate the framing knob (Item 7) to its center position (FRAME reading level, as shown). Using the motor knob (SH-1000 soundhead) or the soundhead flywheel (5-Star soundhead), turn the mechanism by hand to place the intermittent sprocket (Item 9) in its rest position. In the rest position, the index mark (Item 10) will align with one of the painted white index markers on the intermittent shaft collar when stopping after sprocket rotation.

Open the pad roller assemblies (Items 2, 5). Open the film gate (Item 3) by moving the gate opening lever (Item 4) forward. The gate will lock in position (as shown).

Dismount the film gate by removing the (2) chrome knurled nuts. Use a clean, dry cloth to wipe down all film bearing surfaces of the gate and trap (Item 13). Replace the film gate and nuts. This should be performed at each threading operation.

Thread the film as illustrated. Engage the film on the intermittent sprocket (Item 9), and check for correct framing at the framing aperture (Item 12). When correct, close the gate by firmly holding the gate opening lever and tripping the gate release (Item 8). Walk the lever back by hand to prevent the gate from slamming into the trap with excessive force. Form loops above and below the gate as illustrated, and close the pad roller assemblies (Item 2, 5).

Turn the mechanism by hand to advance a few frames of film. Run fingers over each sprocket (Items 1, 6, 9) to ensure that the sprocket teeth are centered in the film perforations, and the film is centered on the sprockets. Double check the position of the film in the framing aperture (Item 12). A correct frame image in the framing aperture ensures correct frame positioning in the picture aperture (Item 11). The framing knob (Item 7) can be used to correct misframes, but doing so reduces the framing range during playback. It is advisable to open the gate and rethread with the framing knob in its center position.

Thread the soundhead as instructed in the soundhead manual. A slight degree of film tension is required above the feed sprocket (Item 1) and below the soundhead. This prevents the film from snapping on motor start.

External Links

Film-Tech manuals page - A PDF manual for the Simplex XL is available here.
History of the Simplex Projector by John Cannon

@@ Line 1: / Line 1: @@
 A [[35mm projectors|35mm projector]] made by [[Simplex]].
-<gallery>
+<gallery mode=packed heights=400px>
-[File:Simplex-xl-interior.jpg
 File:Simplexxl.jpg
+File:Simplex-xl-interior.jpg
+File:Simplex PR-1014 interior.JPG
 </gallery>
 ==Threading==
-[[File:Simplex-xl-threading.jpg|thumb|300px|Threading diagram for the Simplex XL. Click to enlarge.]]
+[[File:Simplex PR-1014 Threading Diagram.png|left|thumb|300px|Threading diagram for the Simplex PR-1014. Click to enlarge.]]
 ''For general information about threading projectors, see [[threading]]''
-* Manually advance the mechanism to rotate the intermittent sprocket (Item 9) to its "rest" position. In the "rest" position, the index mark (Item 10) will align with one of the painted white index lines on the intermittent shaft collar after the sprocket has completed a four-perforation step.
+*Rotate the framing knob (Item 7) to its center position (FRAME reading level, as shown). Using the motor knob (SH-1000 soundhead) or the soundhead flywheel (5-Star soundhead), turn the mechanism by hand to place the intermittent sprocket (Item 9) in its rest position. In the rest position, the index mark (Item 10) will align with one of the painted white index markers on the intermittent shaft collar when stopping after sprocket rotation.
-* Open the pad roller assemblies (Items 2 & 6). Open the film gate (Item 3) by pulling the gate opening pin (Item 12). Slide the film gate forward to the threading position (as shown). Open the intermittent sprocket shoe pad (Item 5).
+*Open the pad roller assemblies (Items 2, 5). Open the film gate (Item 3) by moving the gate opening lever (Item 4) forward. The gate will lock in position (as shown).
-* At this time, it is advisable to dismount the film gate pressure pad by sliding the gate to its full forward position and removing the (2) button head screws (Item 4). Use a clean, dry cloth to wipe down all film-bearing surfaces of the gate and trap (Item 14). Replace the pressure pad, slotted end down, after cleaning. This procedure should be performed at least once every day.
+*Dismount the film gate by removing the (2) chrome knurled nuts. Use a clean, dry cloth to wipe down all film bearing surfaces of the gate and trap (Item 13). Replace the film gate and nuts. This should be performed at each threading operation.
-* Neutralize the intermittent (or Geneva), make sure the intermittent sprocket is in the center of its travel before threading. See [[Framing]] for more details. Thread the film as illustrated. Thread the intermittent sprocket (Item 9) first and check for correct frame position at the framing aperture (Item 13). When correct, close the intermittent shoe pads (Item 5). Secure the gate by pushing the gate into the trap until the spring-loaded gate latching pin (Item 12) engages. Form two-finger loops above and below the gate as illustrated, and close the pad roller assemblies (Items 2 & 6).
+*Thread the film as illustrated. Engage the film on the intermittent sprocket (Item 9), and check for correct framing at the framing aperture (Item 12). When correct, close the gate by firmly holding the gate opening lever and tripping the gate release (Item 8). Walk the lever back by hand to prevent the gate from slamming into the trap with excessive force. Form loops above and below the gate as illustrated, and close the pad roller assemblies (Item 2, 5).
-* Manually advance the mechanism to advance a few frames of film. Run fingers over each sprocket (Items 1, 7 and 9) to insure that the sprocket teeth are centered in the film perforations, and the film is centered between the flanges of the pad rollers. Check again the position of the film in the framing aperture (Item 13). With the intermittent sprocket in its "rest" position, a correct frame image in the framing aperture insures correct frame positioning in the picture aperture (Item 11). Use the framing knob (Item 8) or handle to correct misframes.
+*Turn the mechanism by hand to advance a few frames of film. Run fingers over each sprocket (Items 1, 6, 9) to ensure that the sprocket teeth are centered in the film perforations, and the film is centered on the sprockets. Double check the position of the film in the framing aperture (Item 12). A correct frame image in the framing aperture ensures correct frame positioning in the picture aperture (Item 11). The framing knob (Item 7) can be used to correct misframes, but doing so reduces the framing range during playback. It is advisable to open the gate and rethread with the framing knob in its center position.
-[[File:Simplex intermittent sprocket.JPG|thumb|300px| Intermittent sprocket on a Simplex XL projector. Observe its range of motion and set to the center of its travel before threading. See [[Framing]] for more details.]]
+[[File:Simplex intermittent sprocket.JPG|left|thumb|300px| Intermittent sprocket on a Simplex XL projector. Observe its range of motion and set to the center of its travel before threading. See [[Framing]] for more details.]]
-* Thread the soundhead.
+*Thread the soundhead as instructed in the soundhead manual. A slight degree of film tension is required above the feed sprocket (Item 1) and below the soundhead. This prevents the film from snapping on motor start.
-* A slight degree of film tension is required above the feed sprocket (Item 1) and below the soundhead. This measure prevents the film from snapping upon motor start.
 ==External Links==

Simplex X-L: Difference between revisions

Revision as of 11:32, 8 May 2020

Threading

External Links

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