Definition of "shearpole"
shearpole
noun
plural shearpoles
Quotations
He then excavated under the upper edge as much as possible, so that the escaping air passed through and loosened up the material on that side, wedged up and strained the pipe as before, and, with a battering-ram made of a 12-in. square oak timber, 12 ft. long, and in the middle suspended from shearpoles, struck successive blows against the top of the pile; while it was desceending; it was thus quickly brought into position.
1873, The Practical Magazine, volume 1, page 396
(nautical) A horizontal beam that goes along the edge of the shroud to which the rigging is attached.
Quotations
so careful were our officers to keep the rattlins taught and straight, that we were obliged to go aloft upon the ropes and shearpoles with which the rigging was swifted in; and these were used as jury rattlins until we got close upon the coast
1840, R[ichard] H[enry] D[ana], Jr., “CHAPTER XXXV”, in Two Years before the Mast. […] (Harper’s Family Library; no. CVI), New York, N.Y.: Harper & Brothers […]
Their lengthy tale was a sorry one of vessels under-crewed in able seamen, with the deficiency made up with supernumeraries – “no sailors at all ......not able to go aloft ... couldn't put their feet above the shearpole; " of unfit vessels, “ a man has often to carry emigrant ship in his arms...for the hands are always at the pumps;" crowded conditions for emigrants, with little segregation of the sexes – in consequence "scarcely a single woman who emigrates who keeps her character on board ship;" and provisions so bad "that the biscuits are so full of maggots that the sailors say they're rich as Welch rabbits when toasted."
2017, Lars U. Scholl, Merchants and Mariners: Selected Maritime Writings of David M. Williams, page 216
A horizontal support that pivots on an upright, allowing a bridge to swing to the side, thereby permitting boats to pass.
Quotations
The last chapter consists of a glossary of 5,000 technical terms restricted to those used by workmen and others on bridge designing, construction and erection (not, however, including bobtail swing spans or shearpole draws); this covers 221 pages, and the book concludes with an index filling 61 pages.
1917, The Railway Gazette - Volume 26, page 626
In the late eighties and early nineties several new types of movable spans were advocated, including the pull-back draw, the jackknife span, the bob-tail swing, the horizontal-folding draw, the shearpole draw, the gyratory lift, the transbordeur, the double-cantilever swing, several types of bascule, and the vertical lift.
1932, Journal of the Association of Chinese & American Engineers, page 10