William H Horstmann Company manufacturers Of Columbia Yarns W. H. Horstmann Company, 1908.
Horstmann was in the textile industry and was known as manufacturers of military goods and very well known for it’s civil war button back and swords.
I can only speculate about this, however, there seems to be a connection because if anything worthy of purchase would have been the patents for the button backs which if studied look an awful lot like to button back used in the button covering tools created by David Traum Co.
W. H. HORSTMANN / PHILA. 1820-1850
W. H. HORSTMANN / NEW YORK 1820-1837
W. H. HORSTMANN & SONS 1843-1863
W. H. HORSTMANN & CO. / PHILA. 1864-1866
W. H. HORSTMANN & CO. / NEW YORK 1837-1847
HORSTMANN BROS & CO. / PHILA 1859-1863
HORSTMANN BROS & CO. / NEW YORK 1850-1852
HORSTMANN BROS & ALLIEN 1852-1877
HORSTMANN BROS & DRUCKER 1844-1850
HORSTMANN / PHILADELPHIA 1893-1935