초록 ▼

Mixing apparatus develops a clamping pressure on a container to be mixed by bringing a pair of pressure plates together through the application of driving force developed by cranking a crank arm. A pawl and rachet arrangement prevents rotation of the crank arm in a direction which would loosen clamp

Mixing apparatus develops a clamping pressure on a container to be mixed by bringing a pair of pressure plates together through the application of driving force developed by cranking a crank arm. A pawl and rachet arrangement prevents rotation of the crank arm in a direction which would loosen clamping pressure, unless a pawl unlocking knob is activated. Clamping pressure is limited by a clutch plate arrangement. Mixing apparatus is enclosed within a cabinet having a door interlock system which also automatically activates a brake for positively stopping further movement of the mixing apparatus.

대표청구항 ▼

[ What is claimed is:] [1.] Mixing apparatus for pulverulent materials, comprising:a pair of opposed pressure plates;first frame means for mounting the pressure plates for movement toward and away from each other, between clamped and unclamped positions, into and out of clamping engagement with a co

[ What is claimed is:] [1.] Mixing apparatus for pulverulent materials, comprising:a pair of opposed pressure plates;first frame means for mounting the pressure plates for movement toward and away from each other, between clamped and unclamped positions, into and out of clamping engagement with a container disposed between the pressure plates, respectively;second frame means for mounting the pressure plates for a mixing motion which mixes the contents of the container;clamp drive means mounted on the first frame means for moving at least one of the pressure plates between the clamped and unclamped positions, the clamp drive means including a crank arm, means for rotatably mounting the crank arm to the first frame means, and at least one manually graspable handle means mounted on the crank arm for movement between locked and unlocked positions; andlock means carried by the first frame means for locking the crank arm against rotation in a first direction and for unlocking the crank arm when the crank arm is moved in a direction opposite to the first direction, the lock means comprising ratchet gear means carried by the first frame means and pawl means carried by the crank arm, the pawl means including a lever arm pivotally mounted to the crank arm and a pawl member pivotally mounted to the crank arm, with one of the crank arm and the pawl member carrying a pin and the other of the crank arm and the pawl member defining an aperture for receiving the pin, so that as the lever arm is pivoted, the pawl member is disengaged from the ratchet gear means.