摘要:
A drafting device creating perspective views from horizontal base lines with remote horizontal vanishing points and with a remote skyline vanishing point. The drafting device includes articulated arm assemblies on opposite sides of the board. Each arm assembly includes a lower straight edge that is pivotally connected by primary and secondary arms to a pivot arm pivotally mounted at opposed sides of the drawing board, thereby establishing an adjustable four-bar linkage that allows the straight edge to be oriented at vertically varying horizontal base lines with horizontal vertical vanishing points remote from the drawing board and variable perspective angles. In combination with ordinary drafting tools and scales, the drafter can create three dimensional objects as viewed from a horizontal base line perspective.
摘要:
A facia border for covering the periphery of a structure between the roof and a soffit includes mounting clips attached at periodic peripheral locations for slidably attaching facia trim at detented positions.
摘要:
A forensic light source kit including a portable light source having a self contained battery and a white light source with a plurality of sliding filters for providing selected wavelength illumination, a plurality of barrier filter goggles, a tripod for mounting the light source, and a carrying case therefor.
摘要:
A multipurpose camping hook for mounting any available support surface includes a plurality of functional surfaces and contours for hanging equipment, clothing and associated articles, as well as providing tools for supplemental tasks. In combination with like articles, the hangers may be used for stringing lines and rods for additional organizational capabilities.
摘要:
A light servicing system for suspended lighting that may be lowered from operating height to a testing and servicing height while remaining connected to the fixture electrical service includes a mate and lock connector providing plug in connection to the fixture electrical service thereby avoiding the need to disconnect the wiring. The fixture chain is provided with a releasable link to permit removal of the fixture without special tools. A tethering assembly having an adjustable fixed length includes upper and lower hooks for engaging the chain and fixture across the releasable link. Upon release of the link, the tethering assembly allows manual lowering of the fixture to a suspended testing height to avoid damage to fixture components. Prior to lowering, an extended umbilical power cord is spliced at the mate and lock connector to provide circuit power to the lighting unit for validating the operations of the fixture prior to remounting.
摘要:
A process for treating waste products discharged in a waste water from an animal operation, such as a swine confinement facility includes a holding tank for receiving waste water from the flushing of the facility in which solids to accumulate at the bottom thereof; wherein as conveyor transfers solids from said bottom at a rate preventing agitation of the waste water, to a compactor for removing additional water content and to a product dryer for converting the solids into a dry product. The product dryer includes a water heating system with water lines connected in a closed loop to the holding tank. The heating system thermal treats the circulating waste water and waste solids to a temperature sufficient to reduce undesired constituents therein. The product dryer is vented to a separator for recovering ammonia contents in the waste material.
摘要:
A removable reducer bushing is carried in a threaded port of an outlet box for coupling with a small threaded conduit and electively removable for coupling with a large threaded conduit thereby permitting a single box to handle multiple conduit sizes without separately procured parts. The bushing includes a deformable thread interruption resisting bushing rotation during removal of the small threaded conduit and frontal slots for manual removal of the bushing with a screwdriver against the resistance of the thread interruption.
摘要:
An indoor facility provided with a liquid refrigerant dehumidifier coil connected with the main refrigeration coils in a secondary refrigerant loop and a compressor waste heat coil coupled with the primary refrigerant loop and heating a desiccant wheel for removing further humidity from the process air stream.
摘要:
An apparatus for making temporary road mats characterized by multiple layers of mutually perpendicular elongated timbers having an array of vertical intersections aligned in lateral rows. The apparatus includes a gang drill that moves relative to a roughly assembled mat for sequentially drilling the lateral rows of intersections.
摘要:
A pivoting hitch mount assembly for interconnecting a towed vehicle with towing vehicles having hitch positions at varying elevations includes a pivot arm assembly having a hitching component for coupling with a the hitch position with the towing vehicle that is selectively connected to a support assembly on the towing vehicle at plural front and rear pivot connections enabling selective inclination and elevation of the hitching component with respect to the towing vehicle.