Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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Ernst Immanuel Grayn
Sally Mathias
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Individual
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Individual
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Publication of GB189818347ApublicationCriticalpatent/GB189818347A/en
18,347. Grayn, E. X., and Mathias, S. Aug. 26. Hooks for fastening traces and pole-chains. The links g, h engage respectively with the hooked ends b, c of the piece k, which is so shaped that, when the parts are in tension, the links exert no pressure upon the spring locking-bolt a or the slide d held in position by the bolt e. The slide d may, therefore, be readily pressed back, and the link h twisted out of engagement with the hook c while the parts are in tension. The hook c may be closed by a spring bolt similar to the bolt a.