(7) "It also helped that they were open-minded: they readily employed anyone who could contribute to their ventures. Perhaps the single most important technological innovation used by New Bedford’s whaling fleet was the 'Temple Toggle,' a harpoon tip devised by Lewis Temple, a former slave from Virginia."
" 'Temple Toggle,' a harpoon tip devised by Lewis Temple"
(a) Immersion Camp 57 The Toggling Harpoon Head. YouTube.com, published by Madi Sussmann on Nov 11, 2013.
https://www.youtube.com/watch?v=QZu9AOvB5pc
("Roger Topp and Abel Hopson
2004 Immersion Camp: 57. The Toggling Harpoon Head Alaska's Digital Archives, University of Alaska Museum of the North, Fairbanks, Alaska
http://vilda.alaska.edu/cdm/sing ... cdmg3/id/322/rec/43
")
(b) toggle (n; "mid 18th century (originally in nautical use): of unknown origin"): (definition 1 with an illustration)
www.oxforddictionaries.com/definition/english/toggle
(c)
(i) Lewis Temple
https://en.wikipedia.org/wiki/Lewis_Temple
(1800-1854)
(ii) Toggle Irons. Whalecraft.net, undated (written and owned by Thomas G Lytle)
www.whalecraft.net/Toggle_Irons.html
("In 1848 Lewis Temple * * * made an improved toggle iron, and is generally given credit for the invention of the toggle iron. * * * One very early version of the Temple iron * * * [had] rear barb * * * [that] was made with a sharpened top edge that would cut the grommet)
Quote: "Very soon Temple replaced the grommet by a small wood shear pin placed through holes drilled through the head and shaft. This wood pin held the head streamlined to the shaft for darting, and would not allow early toggling. After complete penetration when force of the running whale was applied to the whale line, the rear barb caught in the flesh or blubber and forced the toggle head open. The wood pin holding the head iTemple Iron Toggledn place sheared allowing the head to toggle open. This final design is the one for which Lewis Temple is famous. It was known as Temple's gig, or more commonly as the Temple iron. It retained the feature of the front barb and rear barb. In fact, later improvements [by other people] retained the double barb configuration and the wood shear pin. This became the industry standard for whaling harpoons.
(iii) Lewis Temple’s Real Innovation. New Bedford Whaling Museum, undated
http://www.whalingmuseum.org/learn/lewis-temple
("Blubber is excessively tough material filled with interlocking tendons and if the toggle iron opened under the blubber layer the harpoon could not pull free, it was locked in place. By the 1850s blacksmiths all over New Bedford were replicating these Temple toggle irons")
There is no need to read the rest of (iii) and the next, which is (iv).
(iv) Temple Toggle Iron. Smithsonian Institution, undated (under the heading “on the Water”)
http://americanhistory.si.edu/on ... ion/TR_330535A.html
(ID Number:TR*330535A, Date: ca 1859: "Unfortunately, Temple never patented his idea, which swiftly achieved widespread application throughout the world's whale fisheries. He died in May 1854, unrecognized and in debt")
(8) "But the whalers’ main asset was their business model. In the 1830s, the legislatures of six American states approved charters for whaling corporations giving them the right to raise capital by selling shares to the public—much the same corporate structure as the Dutch and British East India Companies. None of the six survived the 1840s. 'The diffuse ownership structure of the corporations, and the reduced stakes held by their managers, likely diminished the incentives for the managers to perform their role diligently,' concludes Eric Hilt of Wellesley College. Given the expense of buying, outfitting and launching a boat into the perilous ocean, the link between risk and reward needed, it seems, to be tighter."
In scientific experiments, one needs a control, and this paragraph serves that purpose. |