Abstract: An animal feeder including a hopper portion and a trough portion. The hopper portion is removable from the trough portion to facilitate cleaning. By providing a plurality of trough portions having differing numbers of feed holes in one or both sides, the hopper can be removed from one trough and used in another trough to accommodate differing numbers of feeding animals.

Abstract: A clip-type support for use in installing trench drain systems. The clip device has two clip structures spaced from each other along a central web to engage, clamp and support two inter-engaging end portions of adjacent drain channel sections. A middle portion of the clip device separating the two clip structures has two deformable tabs, each located on opposite sides of the web. The tabs have apertures for engaging support rods which support the clip and drain channel sections within a trench in which the trench drain system is being installed. By deforming the tabs, the apertures are aligned relative to the rods thereby allowing the clip to move along the rods to align the adjacent drain channel sections. When the tabs are not deformed, the apertures are not aligned thereby locking the clip in place relative to the rods.

Abstract: A safety trench drain conduit formed of first and second trench drain elements each in the form of an open top channel having imperforate bottom and sidewall portions. The first trench drain element is located and retained within the second trench drain element and is constructed and arranged to allow liquid access thereto from outside the second trench drain element. The second trench drain element bottom and sidewall portions envelope those of the first trench drain element. The second, outer, trench drain element sidewall portions include transverse surfaces above and laterally outward of and sloped inwardly toward the first trench drain element to direct any seepage near the entrance of the trench drain toward the open top of the first trench drain element.

Abstract: An elongate safety conduit or trench for receiving chemical liquids, having first and second preassembled conduit elements, the first located and retained within the second. A space is between the two at the bottom for collecting liquid that may leak through the first. A seal along the length of the conduit between the two elements inhibits entry of liquid between the two.