Paint can shaker and mixer

Claim 1

IN A DEVICE OF THE CLASS DESCRIBED, (A) A BASE, (B) FRAME STRUCTURE CARRIED BY SAID BASE, (C) A PAIR OF LATERALLY SPACED GENERALLY PARALLEL HORIZONTALLY DISPOSED SHAFTS JOURNALLED IN SAID FRAME STRUCTURE, (D) MEANS FOR IMPARTING SIMULTANEOUS OSCILLATORY MOVEMENTS TO SAID SHAFTS IN OPPOSITE DIRECTIONS, (E) A PAIR OF SHAKER FRAMES ONE EACH FAST ON A COMMON END OF ONE OF SAID SHAFTS AND EACH THEREOF INCLUDING (1) A PAIR OF LATERALLY SPACED GENERALLY UPRIGHT GUIDE-LEGS, ONE EACH ON AN OPPOSITE SIDE OF ITS RESPECTIVE SHAFT, AND (2) A CROSSHEAD CONNECTING THE INTERMEDIATE PORTIONS OF SAID GUIDE-LEGS AND DIVIDING SAME INTO UPPER AND LOWER GUIDE-LEG ELEMENTS, (F) A GENERALLY HORIZONTALLY DISPOSED UPPER CLAMPING PLATE MOUNTED AND GUIDED FOR GENERALLY VERTICAL ADJUSTMENTS ON EACH PAIR OF SAID UPPER GUIDE-LEG ELEMENTS, (G) MEANS FOR LOCKING EACH OF SAID UPPER CLAMPING PLATES IN DESIRED ADJUSTED POSITIONS ON THEIR RESPECTIVE UPPER GUIDE-LEG ELEMENTS, (H) A LOWER CLAMPING PLATE SLIDABLY MOUNTED ON EACH PAIR OF SAID LOWER GUIDE-LEG ELEMENTS IN PLANES PARAL LEL TO THEIR RESPECTIVE UPPER CLAMPING PLATES, (I) YIELDING MEANS LIMITING DOWNWARD MOVEMENTS OF EACH OF SAID LOWER CLAMPING PLATES ON THEIR RESPECTIVE LOWER GUIDE-LEG ELEMENTS, (J) A HORIZONTALLY DISPOSED ROCKSHAFT JOURNALLED IN SAID FRAME ON AN AXIS GENERALLY NORMAL TO THE AXES OF SAID FIRST MENTIONED SHAFTS AND BELOW THE PLANE OF SAID FIRST MENTIONED SHAFTS, (K) A RADIALLY PROJECTING OPERATING LEVER FAST ON SAID ROCKSHAFT FOR SWINGING MOVEMENTS IN A VERTICAL PLANE INTERMEDIATE SAID SHAKER FRAMES, (1) A PAIR OF CAM-ACTING DOGS ON SAID ROCKSHAFT ONE EACH AXIALLY SPACED FROM SAID OPERATING LEVER IN OPPOSITE DIRECTIONS AND ONE EACH ADAPTED TO OVERLIE AND ENGAGE ONE OF SAID LOWER CLAMPING PLATES UPON DOWNWARD SWINGING MOVEMENTS OF SAID OPERATING LEVER, WHEREBY TO SIMULTANEOUSLY DEPRESS SAID LOWER CLAMPING PLATES AGAINST THE BIAS OF ITS RESPECTIVE YIELDING MEANS, (M) MEANS FOR RELEASABLY LOCKING SAID OPERATING LEVER IN SAID DOWNWARDLY SWUNG POSITION, AND (N) MEANS FOR RELEASABLY LOCKING SAID OPERATING LEVER IN GENERALLY UPRIGHT POSITION WHEREIN EACH OF SAID CAM-ACTING DOGS IS OUT OF ENGAGEMENT WITH ITS RESPECTIVE LOWER CLAMPING PLATE.