Abstract: A solar collector for use in either an upfeed forced hot water heating system or a downfeed system features a pair of serpentine coils arranged in opposing flow relationship within a shallow insulated collector housing having a sealed glass closure panel. The two serpentine coils lie in spaced parallel planes within the housing, and the two coils are offset laterally so that their individual longitudinal loops overlap laterally by approximately one-half the width of each loop. The flow of heated fluid in each serpentine coil is controlled independently of the other coil by a temperature-responsive modulating valve connected in each coil close to the outlet end thereof within the housing. Efficiency of operation and practicality and economy of construction are featured.

Abstract: A paddle and puck game is provided in which each player is equipped with two paddles but must defend three goals. The playing equipment comprises an open tray, which provides a playing surface and opposite goals. The playing surface is marked with a center line to divide the available ranges of activity of the opposing players to their own separate courts. Near each end of the tray the side walls are slotted, removably to receive goal strips. Each goal strip generally includesthree scoring slots of different scoring values in its lower border. Goal strips of varying difficulty may be provided to accommodate players of differing levels of ability, and to permit goals of unequal difficulty to be used simultaneously at opposite ends for handicapping purposes. The goal spaces behind the slots are partitioned off from one another so that a scoring puck will generally be appropriately trapped, for avoiding disagreement as to which goal slot it passed through.