William B. Purvis

William B. Purvis (12 August 1838 – 10 August 1914) Purvis, who appears to have inherited his grandfather's mechanical inclinations, worked on various inventions, attempting to raise funding from various sources, including his wealthy uncle Robert Purvis.

Major inventions

Improvement to the hand stamp Purvis's first patent, on February 27, 1883, was an improvement of the hand stamp that enabled it to replenish its own ink.

Fountain pen According to Purvis, his updated design of the fountain pen was intended to provide a simple, durable, and cheaper construction so the pen could be carried in someone's pocket. Purvis set an elastic tube between the pen nib and the ink reservoir, enabling the tube to return the excess ink to the reservoir.

Paper bags Purvis had a particular interest in paper bags, and continually attempted to improve upon the bag-making process. From 1884 to 1897, he was granted at least six different patents for paper bag technology. In August 1890 Purvis was issued a patent for an improved paper bag machine manufactured satchel bottom shopping bags at an improved volume with greater automation than any previous machinery. His paper shopping bag machine utilized a combination of two suction formers that had perforated surfaces. 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. In 1883, Purvis established the Sterling Paper Bag Company, but it went bankrupt and was shut down in 1894. While his uncle was able to settle the company's debts

Close-conduit electric railway system First installed in New Jersey, Purvis's close-conduit electric railway system set an electromagnet under the center of the railcar. The closed conduit construction was made by insulating material, and installing many soft iron cables on its surface.

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. By 1899 the company had offices in the Philadelphia Bourse and pursued opportunities in a number of cities including Omaha, Nebraska, Jersey City, New Jersey, Des Moines, Iowa and Washington, D. C.

Last years 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.

William B. Purvis died two days before his seventy-sixth birthday, on August 10, 1914, at the old Medico-Chi Hospital in Philadelphia. He was buried in the churchyard of the Church of Saint James the Less in the East Falls section of Philadelphia several days later. His grave is unmarked.