Enggren lightning rod insulator

[Trade Journal]

Publication: Scientific American

New York, NY, United States
vol. 14, no. 39, p. 322, col. 1,3

Patent Claims


Issued from the United States Patent Office



[Reported officially for the Scientific American.

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DEVICE FOR SECURING LIGHTNING RODS - John A. Enggren, of Brooklyn, N. Y. : I claim an insulator for lightning rods composed of a glass standard, A, a spring clasp, C, having shanks, i, and shoulders, j, and otherwise made as shown and described.

[This invention consists in having metal caps fitted on or over the ends of the glass insulators, the caps being recessed vertically to receive the conductor, and notched at each side to receive the shanks of a spring clasp which is provided with anchors or shoulders, one at each end. The shoulders pass into recesses in the ides of the insulators and are retained therein by the elasticity of the shanks of the clasps, the latter retaining or holding the conductor in the caps and both the caps and conductor to the insulator.]


Keywords:Lightning Rod Insulator : Enggren
Researcher notes: 
Supplemental information: Patent: 24,110
Researcher:Bob Stahr
Date completed:February 1, 2010 by: David Wiecek;