Publication: Western Electrician
Chicago, IL, United States
The Nashold Self-locking Cleat.
The fact that porcelain is now employed to such a great extent in the manufacture of electrical fixtures, and that its use has met with the approval of the fire underwriters, has stimulated inventors to the production of various ingenious improvements. The value of porcelain as an insulator has been firmly established for some time, and of late designers have been vying with one another to present "the best" cleat.
The accompanying cut will therefore be of interest in that it illustrates one of the latest novelties in porcelain cleats. The construction of the Nashold self-locking cleat, manufactured by the Nashold Cleat company, 934 Monadnock block, Chicago, is easily understood. There is a full half-inch of porcelain between the point of contact of wire and ceiling, thus bringing the device within the requirements of underwriters, whose endorsement it has received after severe and exhaustive tests. One of the chief features claimed for the cleat is that it retains no moisture. The base of the holding point forms a ridge at the apex of which the wire crosses, and any moisture that might be in the surrounding atmosphere would have not more chance to collect than is unavoidable with any other section of the line. In installing, all that is required is to push the wire through the opening, then pull it straight, and it is held as strongly as in a vise. It enters and emerges from its anchorage on exactly the same lines, so that its appearance is as though it were pulled through a straight hole.