Abstract: A device that automatically repeats a prerecorded message for training a bird to mimic the message. The device is sized such that it may be attached to a bird cage by adjustable clips. The device electronically records and stores a message spoken by the user and plays back the message through a speaker for the bird at intervals determined by a timer. A user may record any type of message that the user wishes for the bird to learn. The message may be of variable length up to 60 seconds in duration. The user may select a delay interval between one second and thirty minutes by utilization of the timer. Once the user activates the play-back, the device will play the prerecorded message at a selected volume, automatically repeating in intervals equal to that selected by the user. Thereafter, the device will continue to repeat the prerecorded message at the selected interval until the user deactivates the device.

Abstract: A valve activation device having a linear reciprocating cam shaft having longitudinally extending cam grooves that are engaged by captive cam followers which oscillate up and down in response to sideways reciprocation of the camshaft for activating intake or exhaust valves of internal combustion engines or other devices employing reciprocating pistons and valves. The camshaft is caused to reciprocate by a rotary linear converter of the "yankee" type composed of double helix channel at the extreme end of the camshaft and a rotary collar having two sets of diametrically opposed guide members.