Edwin Harrington, Son & Co.
Illustrated catalog given to Lamar Lyndon ca.1890.  The firm was located at North Fifteenth Street & Pennsylvania Avenue, Philadelphia, Pennsylvania.
Webpage copyright © George Langford 2010
Machine Tools, ca. 1890 illustrated catalog
Edwin Harrington Roll Grinding Machine leaflet
This little catalog had in the back a litle leaflet extolling the Roll Grinding Machine shown at left.  On the back of the leaflet is a pencil sketch that closely resembles some of the drawings in a patent issued to Mr. Robert F. Scott on December 25, 1906.  The patent drawings and a scan of the sketch are shown below.  I can find no connection between Mr. Scott (not the British explorer who lost the race to the South Pole to Amundsen in 1912) and the famous engineer Lamar Lyndon, holder of many battery patents.  Mr. Scott assigned this patent to Edwin Harrington, Son & Co., which is the only link between him and Mr. Lyndon.  The name of Lamar Lyndon is embossed into the cover of the catalog.
George Langford, Editor.
The correct way to grind a roll perfectly straight and round we have demonstrated by actual experience is to have the grinding wheel stationary and traverse the work before it, care being taken to have all the parts of machine as rigid and free from jar or spring as is possible.
This machine is designed for the accurate grinding of rolls, 16 inches diameter, any required length. As shown in photograph, the work is placed in housings on movable table and travels back and forth in front of grinding wheel; the bed is strongly ribbed and heavy; the table, which is moved by screw to insure smoothness and steadiness of motion, has self-oiling guides, running in bed; the traverse of roll front of wheel is automatic. Rolls ground on this machine can be used for roling the thinnest material without wrinkling:
8½ feet table for 16 in. diameter, 5 feet long.

Weight,           lbs. Price, $
Per extra foot of bed, $
Boxing for foreign shipment, $

Corner North Fifteenth Street and Pennsylvania Avenue, Philadelphia.
US Patent No.839,325 vs. sketch on back of leaflet