[1] Robert moved to New York City in 1879 and entered the employment of his brother Howard, making and selling rubber stamps.

[3] The first Ingersoll watches, called "Universal" were introduced in 1892, supplied by the Waterbury Clock Company.

In 1896 Ingersoll introduced a watch called the Yankee, setting its price at $1.

[5] Its assets were sold to the Waterbury Clock Company, the predecessor of the modern day Timex Group USA.

His wife was involved in an attempted murder-suicide in 1926 when she shot her lover and then took her own life with a gunshot to her breast.