![]() The spike was donated to the Museum of the City of New York in 1943, by a descendant of Sidney Dillon. This spike was given to Union Pacific President Oliver Ames following the ceremony. a blended iron, silver and gold spike, supplied by the Arizona Territory, engraved: Ribbed with iron clad in silver and crowned with gold Arizona presents her offering to the enterprise that has banded a continent and dictated a pathway to commerce.a silver spike, supplied by the State of Nevada forged, rather than cast, of 25 troy ounces (780 g) of unpolished silver.a second, lower-quality gold spike, supplied by the San Francisco News Letter, was made of $200 worth of gold and inscribed: With this spike the San Francisco News Letter offers its homage to the great work which has joined the Atlantic and Pacific Oceans.īefore the last spike was driven, three other commemorative spikes, presented on behalf of the other three members of the Central Pacific's Big Four who did not attend the ceremony, had been driven in the pre-bored laurel tie: It is unknown how many people attended the event estimates run from as low as 500 to as many as 3,000 government and railroad officials and track workers were present to witness the event. 60 (better known as the Jupiter) locomotives were drawn up face-to-face on Promontory Summit. On May 10, in anticipation of the ceremony, Union Pacific No. The Last Spike, 1881 painting by Thomas Hill The ceremony was originally to be held on (the date actually engraved on the spike), but it was postponed two days because of bad weather and a labor dispute that delayed the arrival of the Union Pacific side of the rail line. A special tie of polished California laurel was chosen to complete the line where the spike would be driven. Two of the sides were engraved with the names of the railroad officers and directors. The spike had been manufactured earlier that year especially for the event by the William T. It was more of a normalize type treatment than a hardening.See also: First Transcontinental Railroad § The "Last Spike" ceremonyĬompleting the last link in the transcontinental railroad with a spike of gold was the brainchild of David Hewes, a San Francisco financier and contractor. We heat treated C-1023 to affect charpy V-notch strenght for valves and fitting going into A-350 Lf2 service, that is -40F service for say the Noth slope. ThomasP, Charpy V-notch is a toughness test, and heat treat condition can definetly affect that, but the cold brittle steels can be "as forged" and brittle at temps as warm as mid 30's F I make trowels for gardening, and of the 350+ I have made and I gaurantee them not to bend or break in my lifetime. I have never seen any evidence of anything in a spike that indicates other than the AAR spec material.īut they are indeed fun to work, and make great tough steel items, but not very hard items. He does work to the extent he has several Rail Car loads of new spikes at a time and only buys HC. Steve Sells hit that nail on the head! ( Sorry Steve for the pun) The HC spikes are used on Main line tracks in our area per the RR contractor I buy from. When copper is specified, the letters "CU" shall be added." Marking: A letter or brand indicating manufacturer and also the letters "HC" indicating high carbon, shall be pressed on the head of each spike while it is being formed. Bending properties: The body of a full size finished spike shall stand being bent cold through 120 degrees around a pin, the diameter of which is not greater than the thickness of the spike without cracking on the outside portion of the bent portion. Carbon not greater than 0.30%, nor greater than 0.20% copper. 2-3: Specifications for high carbon steel track spikes 1968. When copper is specified, the letters "CU" shall be added. ![]() A letter or brand indicating the manufacturer shall be pressed on the head of each spike while it is being formed. "A low carbon track spike will not contain greater than 0.12% carbon nor greater than 0.20% copper. Original document, 1926, revised last in 1968 American Railway Engineering Association's Specifications for Soft-Steel Track Spikes. ![]()
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