William B. Purvis

The ends of the paper tube were fed between these surfaces and provided with two independent grooves arranged at different positions along the length of the [former]s (something that gives shape to the bag) and out of line with each other.

[1] First installed in New Jersey, Purvis's close-conduit electric railway system set an electromagnet under the center of the railcar.

[9] The closed conduit construction was made by insulating material, and installing many soft iron cables on its surface.

[10] Purvis was able to earn some profit from this invention; with a number of investors, he formed the Union Electric Construction Company, dedicated to the development of urban railway systems using his patents, and for a time was the President of the concern.

[11] By 1899 the company had offices in the Philadelphia Bourse[12] and pursued opportunities in a number of cities including Omaha, Nebraska,[13] Jersey City, New Jersey,[14] Des Moines, Iowa[15] and Washington, D. C.[16] William Purvis, who never married, and his sister Harriet Anne "Annie" Purvis moved from their home at 3045 Fontaine Street in North Philadelphia to a new home at 216 Sharon Avenue in Sharon Hill, Pennsylvania, located in Darby Township, Delaware County, Pennsylvania around 1905.

[17] William B. Purvis died two days before his seventy-sixth birthday, on August 10, 1914, at the old Medico-Chi Hospital in Philadelphia.