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Building "Effects" Pneumatics For your Toy Counter ..... (part 1). |
This article shows how to construct a simple pneumatic
device to blow a metal police whistle for your toy counter. The resulting
effect can be very useful during a police chase scene in a silent movie
or for marching band effects like a rousing arrangement of "Seventy-Six
Trombones".
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| Directing pneumatic on underside of reservoir cover controls air flow to a metal police whistle. The whistle is soldered to a 2x2 square of brass shim stock that is positioned over the port supplied by the all-in-one pneumatic. | Shown here is the top side of the device without the whistle in place. Brass terminal posts provide a path to the wires on the 90 ohm magnet coil. The small hole between the two stainless-steel mounting screws is a vent hole that allows the pneumatic to exhaust when it is in the open position. For this particular valve to function correctly, this port must remain unobstructed. |
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| Complete reservoir and valve assembly prior to installing the whistle. A 3/4" hole through the reservoir bottom, and through the top of the wind box below, admit air to the device. | Finished product: Sounds every bit as good as the one on the Ann Leaf "Son Of The Shiek" recording. |
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| Here is another project about which we will be giving more information soon. It is a Wurlitzer style triangle. | Produced inside of a single weekend, this simple device uses the classic Notterman packaged action unit. |