1. A manhole cover is a removable plate forming the lid over the opening of a manhole, to prevent anyone from falling in and to keep unauthorized persons out.
Since the era of ancient Rome, sewer grates made from stone have been used to keep people from falling into the sewage and to catch anything large that might otherwise fall in.
2. An extractor hood or range hood is a device containing a mechanical fan that hangs above the stove or cooktop in the kitchen. It removes airborne grease, combustion products, smoke, odors, heat, and steam from the air by evacuation of the air and filtration.
3. A Firelog is a manufactured log constructed to be used as wood fuel. Firelogs are designed to be inexpensive, while being easier to ignite, and burn longer, and more efficiently than firewood. Firelogs are traditionally manufactured using two methods. The first uses only compressed sawdust and the second uses sawdust and paraffin, which is mixed and extruded into a log shape. The extruded firelogs are individually wrapped in paper packaging which can be ignited to start burning the firelog as the paraffin is readily combustible.
4. A snowmobile, also known in some places as a snowmachine, or sled, is a land vehicle for winter travel on snow. Designed to be operated on snow and ice, they require no specific road or trail. Design variations enable some machines to operate in deep snow or forests; most are used on open terrain, including frozen lakes, or driven on paths or trails.
Season 08 – Episode 13 – Manhole Covers, Range Hoods, Artificial Logs, Snowmobiles