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Drafting Linen
From the late 19th century until the middle of the 20th century, drafting linen, also known as drafting cloth, was commonly used as an alternative to wood-pulp and rag papers in creating technical drawings. Its major benefits were considerable strength, especially in erasing and redrawing, durability in handling, and translucency for making multiple reprographic prints. Manufactured as an undyed muslin woven fabric, typically using cotton or linen fiber, the textile was highly starched and then calendered to create a smooth surface for precise ink and graphite lines. Although drafting linen was most typically used in creating original drawings, it was occasionally used as the underlying support for blueprints and other similar reprographic processes. Drafting linen largely fell out of favor after the development of drafting film — varying in chemical composition from cellulose acetate to polyester—in the 1950s. See also *Technical drawing tools Drafting tools may be used fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olaf Boye Plumbing Plan February 1889
Olaf or Olav (, , or British ; Old Norse: ''Áleifr'', ''Ólafr'', ''Óleifr'', ''Anleifr'') is a Scandinavian and German given name. It is presumably of Proto-Norse origin, reconstructed as ''*Anu-laibaz'', from ''anu'' "ancestor, grand-father" and ''laibaz'' "heirloom, descendant". Old English forms are attested as ''Ǣlāf'', ''Anlāf''. The corresponding Old Novgorod dialect form is ''Uleb''. A later English form of the name is ''Olave''. In the Norwegian language, ''Olav'' and ''Olaf'' are equally common, but Olav is traditionally used when referring to Norwegian royalty. The Swedish form is ''Olov'' or ''Olof'', and the Danish form is ''Oluf''. It was borrowed into Old Irish and Scots with the spellings ''Amlaíb'' and ''Amhlaoibh'', giving rise to modern version ''Aulay''. The name is Latinized as ''Olaus''. Notable people North Germanic ;Denmark * Olaf I of Denmark, king 1086–1095 *Olaf II of Denmark, also Olaf IV of Norway *Oluf Haraldsen (died c. 1143), Dani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technical Drawing
Technical drawing, drafting or drawing, is the act and Academic discipline, discipline of composing Plan (drawing), drawings that Visual communication, visually communicate how something functions or is constructed. Technical drawing is essential for communicating ideas in Manufacturing, industry and engineering. To make the drawings easier to understand, people use familiar symbols, Perspective (graphical), perspectives, units of measurement, notation systems, visual styles, and page layout. Together, such Convention (norm), conventions constitute a visual language and help to ensure that the drawing is unambiguous and relatively easy to understand. Many of the symbols and principles of technical drawing are codified in an international standard called ISO 128. The need for precise communication in the preparation of a functional document distinguishes technical drawing from the expressive drawing of the visual arts. Artistic drawings are subjectively interpreted; their meanin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Architectural Reprography
Architectural reprography, the reprography of architectural drawings, covers a variety of technologies, media, and supports typically used to make multiple copies of original technical drawings and related records created by architects, landscape architects, engineers, surveyors, mapmakers and other professionals in building and engineering trades. Within the context of archival preservation, the custodians of architectural records must consider many aspects of identification and care when managing the artifactual nature of these materials. Storage containers, handling, paper and chemical compositions and interactions, ultraviolet light exposure, humidity, mold, and other agents of potential harm all interact to determine the longevity of these documents. As well, architectural reprographic drawings are often in very large formats, making storage and handling decisions especially complex. History With the rise of the professionalized practice of western architecture in the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muslin
Muslin () is a cotton fabric of plain weave. It is made in a wide range of weights from delicate sheers to coarse sheeting. It gets its name from the city of Mosul, Iraq, where it was first manufactured. Muslin of uncommonly delicate handspun yarn was handwoven in the Bengal region of South Asia and imported into Europe for much of the 17th and early 18th centuries. In 2013, the traditional art of weaving ''Jamdani'' muslin in Bangladesh was included in the list of Masterpieces of the Oral and Intangible Heritage of Humanity by UNESCO. History In 1298 CE, Marco Polo described the cloth in his book ''The Travels''. He said it was made in Mosul, Iraq. The 16th-century English traveller Ralph Fitch lauded the muslin he saw in Sonargaon. During the 17th and 18th centuries, Mughal Empire, Mughal Bengal Subah, Bengal emerged as the foremost muslin exporter in the world, with Mughal Dhaka as capital of the worldwide muslin trade. It became highly popular in 18th-century France a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calendering
Calendering of textiles is a finishing process used to smooth, coat, or thin a material. With textiles, fabric is passed between calender rollers at high temperatures and pressures. Calendering is used on fabrics such as moire to produce its watered effect and also on cambric and some types of sateens. In preparation for calendering, the fabric is folded lengthwise with the front side, or face, inside, and stitched together along the edges. The fabric can be folded together at full width, however this is not done as often as it is more difficult. The fabric is then run through rollers at high temperatures and pressure that polish the surface and make the fabric smoother and more lustrous. Fabrics that go through the calendering process feel thin, glossy and papery. The wash durability of a calendered finish on thermoplastic fibers like polyester is higher than on cellulose fibers such as cotton, though each depends on the amount and type of finishing additives used and the mach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drafting Film
Drafting film is a sturdier and more dimensionally stable substitute for drafting paper sometimes used for technical drawings, especially architectural drawings, and for art layout drawings, replacing drafting linen for these purposes. Nowadays it is almost invariably made of transparent biaxially oriented polyethylene terephthalate, which should last several centuries under normal storage conditions, with one or two translucent matte surfaces provided by a coating. However, some older drafting films are cellulose acetate, which degrades in only a few decades due to the vinegar syndrome. Uncoated films are preferred for archival, because there is then no possibility that the coating material could deteriorate over time or react with other materials. Uncoated films require the use of an etching ink that penetrates the surface of the film. Because non-etching ink doesn't penetrate the surface of the film the way it penetrates paper, it is often possible to remove inked lines f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellulose Acetate
In biochemistry, cellulose acetate refers to any acetate ester of cellulose, usually cellulose diacetate. It was first prepared in 1865. A bioplastic, cellulose acetate is used as a film base in photography, as a component in some coatings, and as a frame material for eyeglasses; it is also used as a synthetic fiber in the manufacture of cigarette filters and playing cards. In cellulose acetate film, photographic film, cellulose acetate film replaced nitrate film in the 1950s, being far less flammable and cheaper to produce. History In 1865, French chemist Paul Schützenberger discovered that cellulose reacts with acetic anhydride to form cellulose acetate. The German chemists Arthur Eichengrün and Theodore Becker invented the first soluble forms of cellulose acetate in 1903. In 1904, Camille Dreyfus (chemist), Camille Dreyfus and his younger brother Henri Dreyfus, Henri performed chemical research and development on cellulose acetate in a shed in their father's garden in Basel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyester
Polyester is a category of polymers that contain the ester functional group in every repeat unit of their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). Polyesters include naturally occurring chemicals, such as in plants and insects, as well as synthetics such as polybutyrate. Natural polyesters and a few synthetic ones are biodegradable, but most synthetic polyesters are not. Synthetic polyesters are used extensively in clothing. Polyester fibers are sometimes spun together with natural fibers to produce a cloth with blended properties. Cotton-polyester blends can be strong, wrinkle- and tear-resistant, and reduce shrinking. Synthetic fibers using polyester have high water, wind and environmental resistance compared to plant-derived fibers. They are less Fireproofing, fire-resistant and can melt when ignited. Liquid crystalline polyesters are among the first industrially used liquid crystal polymers. They are use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technical Drawing Tools
Drafting tools may be used for measurement and layout of drawings, or to improve the consistency and speed of creation of standard drawing elements. Tools such as pens and pencils mark the drawing medium. Other tools such as straight edges, assist the operator in drawing straight lines, or assist the operator in drawing complicated shapes repeatedly. Various scales and the protractor are used to measure the lengths of lines and angles, allowing accurate scale drawing to be carried out. The compass is used to draw arcs and circles. A drawing board was used to hold the drawing media in place; later boards included drafting machines that sped the layout of straight lines and angles. Tools such as templates and lettering guides assisted in the drawing of repetitive elements such as circles, ellipses, schematic symbols and text. Other auxiliary tools were used for special drawing purposes or for functions related to the preparation and revision of drawings. The tools used for manual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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