Assembling Cumming & Wilson Projectors E and D
Assembling Cumming & Wilson Model E No. 502 and Model D No. 328
The next pictures show the assembly of both these machines but in essence they are both the same construction, showing only minor differences, those being of course that the model E had a rear shutter when it was made. And the model D was retrofitted to a rear shutter operation.
The first set of pictures shows the cleaning up of various elements of the shutter shaft.
The second part shows the assembly of the main plate and sliders fitted to the mainframe
The next part shows the installation of the ball bearing driven shafts this is followed by the main driving gear being installed.
For this part of the assembly we switch to C&W Model D No. 328 (c1928)
More screws then fix the tension spring.
There is a very indistinct V scribed on to the face of the gear, this fits to the spindle gear (I’ll have to get rid of the rust marks in the spindle gear) . You might just make out the mark . This aligns the 5 fixing screws The flange cut on the main bearing shaft should be at the lowest point.
Make sure the spindle is fully oiled; this will impart oil to the gear teeth Carefully wipe of excessive oil If the gear shaft does not run truly then it must be re-installed in a new position
Stud and Tension Spring attachment to the Slider Framing adjusting Spindle holder
THIS REQUIRES A STRONG PAIR OF HANDS
This should be done quickly with a positive action because the spring is very strong indeed
NOTE CAUTION: DON’T INSET THE LEFT VERTICLE FRAMING SPRING STUD BEFORE YOU ATTEMPT PUT THE CAPTURE STUD
BECAUSE IF YOU DO, AND YOU HAPPEN TO LET GO OF THE PLIERS ACCIDENTLY
THE SPRING WILL SPRING BACK AND SNAP OFF THE VERTICAL FRAMING STUD WITH A BANG!
Spinal Frame Adjusting Roller
As the main frame carrying the Intermittent, spindle and shaft to the fan shutter is the main feature of the all Senior models to control the film framing
The spindle and shutter opening and closing timing has to remain constant
To correct for this the spindle slider is repositioned backward and forward to make the correction by the use of an end wedge shape and roller
The next pictures show the main farming in the middle, top and bottom of the framing position in the film gate. This is fixed to the outside projection frame, keeping it aligned with the lamp source