Abstract: An insulation blower having hands-free metered feeding. Insulation is stripped from a supply bale and fed into a plurality of chambers of a rotating chamber wheel. The rate at which insulation is fed into the chambers is metered by a feeder assembly which eats through the bale. As the filled chambers sequentially pass through an air lock, the insulation therein is blown out of a lower airlock port and into a delivery tube. Air from a blower is introduced into the airlock through a metered airbox which allows adjustment of the amount of air delivered to the airlock and hence the rate of insulation blown through the delivery tube. Closing off the airbox completely causes air from the blower to enter the delivery tube directly (bypassing the airbox and airlock) in order to clear obstructions in the delivery tube.

Abstract: The thermal insulation blower of the present invention is built around a vertically oriented air lock system. The insulation blower is capable of being configured for high delivery rates suitable for open area blowing and is capable of being reconfigured for lower delivery rates as a through-the-blower system for closed area blowing operations. The insulation blower includes a metering feeder assembly which can be adjusted to control the rate at which a bale of insulation is ripped and fed into the air lock system. The thermal insulation blower of the present invention also includes a bypass system around the air lock which serves to automatically clear impending plugs of insulation material in the delivery hose.