![]() ![]() ![]() ![]() Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number Publication date Application granted granted Critical Publication of US267420A publication Critical patent/US267420A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links The size outside and the quality inside meets the government standard well.US267420A - Railroad-spike - Google Patents US267420A - Railroad-spike - Google Patents Railroad-spike Download PDF Info Publication number US267420A US267420A US267420DA US267420A US 267420 A US267420 A US 267420A US 267420D A US267420D A US 267420DA US 267420 A US267420 A US 267420A Authority US United States Prior art keywords spike wood railroad point rail Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. It is forged averagely and shaped by machine. The material of AGICO machine-made spike is carbon constructional quality steel and rail track steel as raw material. Therefore railroad spike can be produced batch production more effectively and there will be no high defective rate problem which commonly exists in manual spike. Commonly machine-made spikes have smooth surface and each of them has little deviation. The railroad spike production process is the combination of manual and mechanical mode. So using this production process to make railroad spike itself exists some shortcomings, for example, part of the rail spike surface will raise or have rough selvedges, and its weight will have positive or negative deviation.Ĭompare to the manual railway spike, machine-made spike can avoid these problems very well. This mode of production is used by manual forge way, making hot embryo shape of railway spike. The process of common manual railway spike is an earlier process of the spike producing. The machine-made spikes are generally sold by units.īut the production process of two kinds of railroad spikes is different. Regardless of the shape, size and availability they are the best choice in spite of higher price. Machine-made spikes are made by the process such as forging, heat treatment and thread chain. But the price of them is lower and generally sold by tons. ![]() Manual rail spike are made by hand and thus have varies sizes. The process of installation and usage of two kinds of spikes are very simple and the rail spikes can be fixed by spike hammer. The usage mode of the various railroad spikes is different but the functions are almost the same because different structures are all used to impact on the railway track.Ĭommon conventional rail spikes are divided into manual spike and machine-made spike. Now the commonly kinds of domestic rail spikes include wood screw spike, spring spike, screw spike, conventional spike etc.ĪGICO Rail Fastener supplier can not only provide these rail spikes above but also can design railroad spikes by drawing. Railroad spikes as the railway accessories are commonly used in railway track facilities, which were generated in early time and developed following the continuous upgrade of the railway track. The function of the spike is fixing railway track and making the subgrade of the railway track have a better ability to under pressure. Railroad spike is short for metal spike for railway track. Railway workers often use a tool - railroad spike puller, which can be used to pull out the railroad spike in the sleeper in the saving effort way.Īnother relevant tool is railroad spike hammer, which is used to hammer the railway spikes into the railroad ties. The obvious features of track spike are the offset head, flat edge point and chisel, which makes the spike resist to loosening. It is used to fasten railway sleepers or rail ties in the rail track and plays an important role in ensuring the stability of railroad. Railroad spike is the main component in rail fasteners. ![]()
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