Darby


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Darby,

borough (1990 pop. 11,140), Delaware co., SE Pa., a suburb adjacent to Philadelphia; settled by Quakers 1682, inc. 1853. Although residential, it has some manufactures. One of the oldest settlements in the state, it retains many colonial landmarks. The Darby Library Company was founded in 1743 by Quakers.

Darby

 

A family of English iron-foundry industrialists.

Abraham Darby. Born 1677 in Worcester; died Mar. 8, 1717, in Madely Court. He served an apprenticeship at a Birmingham malt factory and established his own business in 1698. In 1704 he founded a copper-smelting works in Bristol. In 1708 he obtained a patent for casting iron pots and other ironwares in sand molds. The process advanced by Abraham Darby significantly lessened the cost of production of these wares. In 1709, breaking with his business partners in Bristol, he leased an old blast furnace in Coalbrookdale. In 1713 he introduced coal as an additive to charcoal in blast-furnace smelting.

Abraham Darby. Born Mar. 12, 1711; died Mar. 31, 1763. Son of the first Abraham Darby. In 1730 he became head of the iron foundry in Coalbrookdale. Under him the foundry was expanded and the blast-furnace process was significantly improved. In 1735, Darby mastered blast-furnace smelting on the basis of coking coal without added charcoal.

Abraham Darby. Born Apr. 24, 1750; died Mar. 20, 1791. Son of the second Abraham Darby. In 1768 he became head of iron production. He is known as the builder (1776-79) of a bridge over the Severn River in Coalbrookdale made entirely of cast-iron parts (with a span of 31 m and a height above the water of 12 m). In 1787, Darby received a gold medal from the Society of Arts for a model of that bridge.

REFERENCE

Dictionary of National Biography, vol. 5. London, 1950.

darby

[′där·bē]
(engineering)
A flat-surfaced tool for smoothing plaster.

darby, derby slicker

1. A float tool used in plastering, either wood or metal, about 4 in. (10 cm) wide and about 42 in. (approx. 1 m) long, with two handles; used to float or level the plaster base coat prior to application of the finish coat, or to level the plaster finish coat before floating or troweling.
2. A hand-manipulated straightedge usually 3 to 8 ft (1 to 2.5 m) long, used in the early-stage leveling operations of concrete finishing to supplement floating.
References in periodicals archive ?
All PCS equipment is backed up by Darby Equipment's commitment to prompt reliable service.
The dog was kept in the back garden and when it was walked Darby described it as yanking her and pulling her in front of vehicles.
That is what brought me back," said Darby in an interview from the Goree Unit prison in Huntsville, about 70 miles north of Houston.
As an Australian author, Darby may have been particularly well-positioned to analyze this practice with objectivity.
"The addition of the machine shop was necessary for Darby to keep pace with growing product demand by providing faster turnaround on precision machine parts, facilitating production scheduling and maintaining the highest standard for quality," Minden added.
The confidence the market has placed in us is clear testament to the strength of the Sime Darby Group, especially in the longer term," said Sime Darby's President & Group Chief Executive Dato' Mohd Bakke Salleh.
Ahmad Zubir allegedly also failed to inform Sime Darby s board of the arrangement, and the fiasco cost the company some 100 million ringgit ($30 million), the prosecutor added.
Freed from the confines of the show's concept, Darby absolutely shone during an extended opening session which elicited repeated belly laughs from the audience with his spontaneous, natural and engaging Kiwi delivery.
Darby insists in his introduction that 'the Irishness constructed around and expressed through the GAA in America has been multifaceted, heterogeneous and has fluctuated and shifted over time according to specific circumstances in both Ireland and in the US' (p.
Brandon Michael Darby is a muscular, golden-skinned 34-year-old with Hollywood looks and puppy-dog eyes.
Emirates International had earlier taken legal action against Sime Darby's subsidiary Sime Darby Engineering for $178.2 million, involving an agreement whereby Emirates would identify potential projects for Sime Darby Engineering to pursue.
The plant will save Sime Darby Unimills more than 10,000m1 of wastewater and six hundred tons of C[O.sub.2] emissions per year.