Abstract: A mechanism for shifting reel mower cutting units to a position whereat the undersides of the cutting units are exposed for service. A knuckle joint is provided for pivoting the cutting units as the lift arms are raised to thereby shift the cutting units to service positions. A connection point is provided between a yoke and the cutting unit which is located at the upper rear quadrant of the cutting unit's side frame for generally balancing the force distributed to the ground through the front and rear rollers during forward mowing operations.

Abstract: A real mower includes a cutting unit having a frame including opposite side plates joined together by front and rear cross members, the rear cross member being located above upright ends of a u-shaped bed knife support which are respectively bolted to the side plates by upper and lower mounting bolts. A pair of stress relief slots is respectively provided in the pair of side plate between the bed knife support and the rear cross member, the slots respectively being arranged arcuately about the upper bed knife support mounting bolts.

Abstract: A carrying means is provided to carry packages or other articles. The carrying means includes a handle provided with a pair of openings through the body of the handle and slots formed in the ends of the handle. A length of cord is threaded through the openings and slots in a manner which, in the preferred embodiment, automatically locks the cord to the handle at the proper length.

Abstract: The substituted theophyllines of the formula: ##STR1## (wherein R.sup.1, R.sup.2 and R.sup.3, which may be the same or different, each represent alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 7 carbon atoms, phenyl or phenylalkyl of 7 to 10 carbon atoms, each of which may be unsubstituted or substituted by one or more hydroxy groups, alkoxy or alkylthio groups of 1 to 4 carbon atoms, halogen atoms, cyano groups, nitro groups, carboxy groups, alkoxycarbonyl groups of 2 to 5 carbon atoms, amino groups, alkylamino groups of 1 to 4 carbon atoms or dialkylamino groups of 2 to 8 carbon atoms, or when the group is phenyl or phenylalkyl, by one or more alkyl groups of 1 to 4 carbon atoms;or R.sup.2 and R.sup.3 together represent a hydrocarbon chain of 3 to 6 carbon atoms optionally interrupted by a heteroatom;and n represents an integer of from 1 to 6)and the acid additional salts thereof, are novel compounds which are useful in the treatment of cardiac disorders.