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Thomas L. Jennings (c. 1791 – February 12, 1859) was an African-American inventor, tradesman, entrepreneur, and abolitionist in New York City, New York.He has the distinction of being the first African-American patent-holder in history; he was granted the patent in 1821 for his novel method of dry cleaning. [1]
Modern solvent-based dry cleaning may have originated in 1821 with American entrepreneur Thomas L. Jennings. Jennings referred to his method as "dry scouring". [2] French dye-works operator Jean Baptiste Jolly [3] [a] developed his own method using kerosene and gasoline to clean fabrics. [3] He opened the first dry cleaning service in Paris in ...
A laundry symbol, also called a care symbol, is a pictogram indicating the manufacturer's suggestions as to methods of washing, drying, dry-cleaning and ironing clothing. Such symbols are written on labels, known as care labels or care tags, attached to clothing to indicate how a particular item should best be cleaned. While there are ...
Dry cleaning refers to any process which uses a chemical solvent other than water. [12] The solvent used is typically tetrachloroethylene (perchloroethylene), which the industry calls "perc". [ 13 ] [ 14 ] It is used to clean delicate fabrics that cannot withstand the rough and tumble of a washing machine and clothes dryer ; it can also obviate ...
Because books are made from a variety of materials, conservators may also need to employ techniques and experience relating to the conservation of leather, parchment, papyrus, or fabric conservation. The main objective of cleaning is to achieve clarity of surface detail. [57] Books and documents may be subjected to different types of cleaning.
Books about or featuring the environment as a prominent theme have proliferated especially since the middle of the twentieth century. The rise of environmental science , which has encouraged interdisciplinary approaches to studying the environment, and the environmental movement , which has increased public and political awareness of humanity's ...
Laundry detergent is a type of detergent (cleaning agent) used for cleaning dirty laundry (clothes). Laundry detergent is manufactured in powder ( washing powder ) and liquid form. While powdered and liquid detergents hold roughly equal share of the worldwide laundry detergent market in terms of value , powdered detergents are sold twice as ...
Full title: An inquiry into the nature and form of the books of the ancients; with a history of the art of bookbinding, from the times of the Greeks and Romans to the present day; interspersed with bibliographical references to men and books of all ages and countries; Hansard, Thomas Curson (1825).