Abstract: A dynamic sprinkling device adopts a deflecting water pressure to facilitate self-rotation of a sprinkling sphere, and allows the water outlets thereon to burst out a variety of spraying points with different rotating patterns through the rotation of the sphere. The self-rotating spherical sprinkler can be installed on any type of water outlets. The structure of the self-rotating spherical sprinkler is an accommodation of a hollow cylinder and a sphere. Through a deflecting through hole on the side of the hollow cylinder, water is injected into the hollow sphere and pushes the sphere to rotate. Water is also allowed to burst out from the water outlets having a variety of arrangements on the sphere.

Abstract: An improved cutting machine with a simple structure, easy assembly, and good cutting effect is provided. One side of the cutting board is provided with a cutter and a ruler, while the other side is provided with a rotary blade capable of rotating. The rotary blade base and the rotary frame can rotate vertically or horizontally, and the rotary lever and the rotary blade are easily replaceable.

Abstract: A corner trimming device includes a base having a seat and a platform to support sheet members to be cut or trimmed, the base includes a channel formed between the seat and the platform. A cutter blade includes a bar engaged into the channel of the base and secured between the seat and the platform and includes an opening to form an angle arm having an inner rounded corner edge formed as a movable cutting edge. A handle is pivotally secured to the base and engaged with the angle arm, to move the cutting edge of the cutter blade downwardly beyond the rounded corner edge of the seat, and to cut or trim corner portion of the sheet members.

Abstract: A corner trimming device includes a base having a seat and a platform to support sheet members to be cut or trimmed, the base includes a channel formed between the seat and the platform. A cutter blade includes a bar engaged into the channel of the base and secured between the seat and the platform and includes an opening to form an angle arm having an inner rounded corner edge formed as a movable cutting edge. A handle is pivotally secured to the base and engaged with the angle arm, to move the cutting edge of the cutter blade downwardly beyond the rounded corner edge of the seat, and to cut or trim corner portion of the sheet members.