he casing and connected with theswitch bar, which extends under the main rail to theswitch points. The stand is mounted directly upon asingle tie or sleeper, and may be set up on either sideof the track, a half revolution of the lever giving the signal shaft a quarter turn, whereby the… … HUTTONS SPIRIT LEVEL. the manipulation of set screws, etc., and wherein thevial is so set as to be absolutely protected against hardusage, has been patented by Mr. James C. Hutton, andis illustrated herewith, two forms of construction beingshown. The endsof the main frame, in which the vialsare…
Patented · Contained · Patents · Munn · Illustrated · Scientific American · Electric lighting · Electric light · Public lighting · Letters patent · Hand circle · Hand circles · Rock crystal · Glass tube · Carbonic acid
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