Abstract: A multi-part construction toy incorporating rod and connector elements, as well as block elements, modified in a way to accommodate the building of hybrid structures utilizing both types of building components. Specialized adapter blocks are provided with openings for receiving special adapter rods. A connector element may be attached in the usual manner to an adapter rod projecting from a block element. For existing rod and connector construction toy sets, the adapter blocks are specially dimensioned to enable multiple attachment points to be established such that complex hybrid structures can be formed. For the large existing base of block type sets, the invention provides a specially dimensioned rod and connector set, compatible with existing toy construction blocks, such that the complex hybrid structures described above can also be executed utilizing existing block elements of standard dimensions.

Abstract: An adjustable weight golf putter is provided with a body portion of a material of low specific gravity, for example aluminum, and a weighted cap, receivable in a longitudinal recess opening at the back extremity of the body portion. The weighted cap is formed of a material of high specific gravity, for example a tungsten-copper alloy, and has a weight which is at least more than 20%, and preferably more than 30% of the weight of the lighter body portion, concentrating the weight of the putter head toward the back and locating its center of gravity more than half way toward the back of the putter head. The weighted cap is secured by a threaded shaft engageable in a recess extension in the body. Optional weighted discs, of a high specific gravity material and each of a different weight, are threadedly engageable with the shaft and are usable in various combinations for optimal weight adjustment.

Abstract: A construction toy system comprised of a plurality of molded plastic girders and connectors. The girder elements of generally square cross section, with interlocking elements extending axially from each end. The interlocking elements each comprise a flange of square configuration, a groove structure of squared configuration adjacent the flange, and a generally cylindrical rod-like extension projecting between the end of the girder body and the groove structure. Connector elements are formed with one or more sockets for receiving interlocking elements of the girders. The sockets have one open side into which the interlocking elements can be inserted with a lateral snap-in action. The flange portions are freely received in a slot formed in the socket, and the groove structure engages and cooperates with opposed locking ribs formed on the sidewalls of the connector socket. Opposed axial grooves in the socket sidewalls engage opposite side portions of the rod-like extension with a snap-in locking action.