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Step stools are halfway between a ladder and a stool, being used, as a support platform, for reaching targets that are at heights between approximately 2 and 3 metres (6.6 and 9.8 ft). The most common modern type is made with two separate ladders connected to each other at the upper end, where there is a platform with an area big enough to ...
John H. Balsley (May 29, 1823 – March 12, 1895) was a master carpenter and inventor, inventing a practical folding wooden stepladder and receiving the first U.S. patent issued for a safety stepladder in the year. He was born in Connellsville, Fayette County, Pennsylvania to George H. and Sarah (Shallenberger) Balsley. His father was also a ...
An extension ladder. A ladder is a vertical or inclined set of rungs or steps commonly used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top.
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Examples include the workman's stool, a simple three legged structure with a concave seat, designed for comfort during labour, [20] and the much more ornate folding stool, with crossed folding legs, [21] which were decorated with carved duck heads and ivory, [21] and had hinges made of bronze. [19]
Image credits: historycoolkids The History Cool Kids Instagram account has amassed an impressive 1.5 million followers since its creation in 2016. But the page’s success will come as no surprise ...