Bell
& Howell 35mm Studio Motion Picture Camera 2709B
A Major Breakthrough in Cine Camera
Designs, 1911
by Wesley R. Lambert
Albert Howell, an engineer and Donald Bell,
a cine projectionist, went into business together in 1907.
They were capitalized at $5,000. Their personalities complemented
each other. Their first company effort was the general manufacturing,
leasing and repairing of machinery. This led to the design
and manufacture of a movie projector called the "Kenodrome".
The first motion picture cameras produced
by the Bell & Howell Company was a then conventional looking
35mm, wood body, hand crank camera, introduced in 1909. Its
unique feature was a very precision film transport mechanism
that incorporated a dual fixed pin registration during exposure.
One of the fixed pins was full horizontal fit in a perforation
and the other pin was full vertical fit in the opposite film
perforation,.
The pins were machined to tolerances of one
ten thousandths of an inch. During exposure the film at the
aperture was impinged on these pins and in that they did not
move, there was no wear from the friction of movement.
Less than a dozen of these cameras were made.
Although this camera was well received in the industry, Bell
and Howell replaced the design with a much more sophisticated
all metal camera. Some of their reasoning may have been predicated
on the experience of the great travelogue film producers Osa
and Martin Johnson who had their two wood B & H cameras destroyed
by termites while they were in Africa.
This first B & H camera was called design
2709. I believe this suggested that it was their 27th design
of 1909.
The new all metal body B & H camera was introduced late in
1911 and was called the 2709B.
This 2709B was and still is, a truly remarkable
cine camera. It had an all metal body that was brilliantly
designed and executed. Almost all cameras of that period had
wood bodies.
The camera featured a refined version of
the great pin registered film transport system of the wood
body camera. It had a four lens rotating turret which would
precisely position any one of the four different lenses in
front of the film aperture. The specific lens could also be
rotated to a position in front of a precision optical viewer
for critical focus check.
The film magazine were 400 ft capacity one
piece assembly that was mounted on top of the camera. Its then
unusual double rounded magazine soon gave the camera the nickname
of "Mickey Mouse Ears." These film magazines had a light trap
that was opened when the magazine was mounted on the camera.
The camera was hand cranked. The hand crank interfaced directly
to a 32 tooth main sprocket so that two turns per second provided
16 frames per second, the prescribed silent camera speed.
Subsequently it used electric motors. Initially
it had a simple optical viewfinder but a fine studio type viewfinder
was offered later.
The superb pin registered movement was called
Unit-I and could be easily replaced with a high speed movement.
The 2709B eventually had 1,000 ft film magazines and with the
advent of sound movies it had available a somewhat silenced
movement.
A dovetail base for the camera allowed the
taking lens when rotated for critical focus to be juxtapositioned
as of the taking position.
The large 2709B camera's rotary shutter is
well balanced and acts somewhat like a balance wheel. The shutter
is adjustable for its opening by an external control. It can
achieve maximum opening of 170 degrees and can be completely
closed. The shutter can be programmed to close or open for
laps and dissolves.
The lenses on the B & H camera are in a special
micro focusing mount and a wide range of focal lengths were
available. The sun shades and special effects accessories were
mounted on extensions from the tripod head rather than encumber
the camera.
The 2709B has been discontinued for decades
now but the old cameras still find use in animation or special
effects nowadays. Many cinematographers believe that the 2709B
still has unsurpassed accuracy in film registration with its
fixed pins. The great Unit-I movement is currently used in
some modern cameras.
This author has serial #18 in his early cine
camera collection.
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