Abstract: A portable liquid storage tank has an external frame and internal walls defining an at least partially enclosed storage volume for liquids. The rigid frame includes a plurality of members connected by moment-resisting joints. The tank walls are formed of a plurality of plates affixed within the tank frame. The liquid storage volume defined by the tank walls is free of structures which can trap liquids.

Abstract: A combination wet and dry lawn treatment spreader for wet and dry materials to be selectively distributed simultaneously and uniformly over a lawn area has a hopper that is mounted upon a base frame structure in combination with four wheels and a fuel powered motor therewith. Only the two front wheels are used for driving purposes. An impeller blade and wet spray arrangement is combined with the motor used simultaneously for front wheel drive connection on the spreader. The impeller blade of the fertilizer spreader distributes fertilizer falling onto the spinning impeller blade at a location below that where simultaneously wet lawn treatment material is sprayed in a fan-like configuration located horizontally in a plane located above a plane in which the impeller blade rotates.

Abstract: An impeller blade spreader for dry fertilizer to be distributed uniformly over a lawn area has a standard fiber glass hopper that is mounted upon a base frame structure in combination with four wheels and a fuel powered motor therewith. Only the two front wheels are used for driving purposes. A timing and revolution interconnection to the impeller blade is combined with the motor used simultaneously for front wheel drive connection on the dry fertilizer spreader. A rod and lever engagement is provided for positive control of engagement of the transmission for transfer of driving power to the motorized front wheel drive and control of the opening and closing of the holes in the bottom of the hopper above the impeller blade of the dry fertilizer spreader to let dry fertilizer fall onto the spinning stainless steel impeller blade.