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A RAM press (or ram press) is a machine, invented in the USA in the mid-1940s, that is used to press clay into moulded shapes, such as plates and bowls. In operation a slice of de-aired clay body is placed in between two shaped porous moulds, and vertical movement of the moulds presses the body into the required shape.
In mathematics, a Möbius strip, Möbius band, or Möbius loop [a] is a surface that can be formed by attaching the ends of a strip of paper together with a half-twist. As a mathematical object, it was discovered by Johann Benedict Listing and August Ferdinand Möbius in 1858, but it had already appeared in Roman mosaics from the third century CE .
Reversal of the ribbon was often controlled manually in early machines, [2] but automatic reversal mechanisms became popular later. An operator who judges a ribbon's ink supply to be too depleted typically manually winds the whole ribbon onto the fuller reel, releasing it from the empty one, and discarding the ribbon and the reel it is wound on.
Hook-and-loop fasteners, commonly known as Velcro (a genericized trademark), hook-and-pile fasteners or touch fasteners are versatile fastening devices that allow two surfaces to be repeatedly attached and detached with ease. Invented in the mid-20th century, they are widely used in clothing, accessories, and various industrial and consumer ...
Rug hooking is both an art and a craft where rugs are made by pulling loops of yarn or fabric through a stiff woven base such as burlap, linen, or rug warp. The loops are pulled through the backing material by using a crochet -type hook mounted in a handle (usually wood) for leverage.
The first mass-produced toy marbles (clay) made in the US were made in Akron, Ohio, by S. C. Dyke, in the early 1890s. Some of the first US-produced glass marbles were also made in Akron by James Harvey Leighton. In 1903, Martin Frederick Christensen—also of Akron—made the first machine-made glass marbles on his patented machine. His ...
Paper clay is handmade or commercially available clay to which a small percentage of processed cellulose fiber is added. The fiber increases the tensile strength of the dry clay and enables dry-to-dry and wet-to-dry joins. Commercial paper clays air-dry to a firm, lightweight sculpture, with minimal shrinking during the drying process. [4]
The Ribbon Machine surpassed any previous attempts to automate bulb production and was used to produce incandescent bulbs into the 21st century. The inventor, William Woods, along with his colleague at Corning Glass Works, David E. Gray, had created a machine that by 1939 was turning out 1,000 bulbs per minute.