1870
UP TO 150.000
1883












UP TO 800.000
1901
UP TO 950.000
1902
From 950.001
1.000.000 Sewing Machines April 1902

1903
From 1.100.000


1904
From 1.300.000

UP TO 1.500.000
1905
UP TO 1.700.000
600 machines per day
180.000 sewing machines in one year ?
1906
UP TO 1.900.000
1907
UP TO 2.100.000
1908
Patent January 7 1908

UP TO 2.300.000
1909
FROM 2.300.001

UP TO 2.500.000
1910
UP TO 2.570.000
1911
UP TO 2.640.000
1912
UP TO 2.690.000


1913

UP TO 2.730.000
1914






UP TO 2.760.000
1915
UP TO 2.790.000

1916

1918

1919






1923 circa

1924 circa

In 1924, the Davis Company's assets were liquidated. At that time, the company employed 1,800 workers.
The company was purchased by the National Sewing Machine Company
sources:
http://needlebar.org/nbwiki/index.php?title=Davis
http://www.kelsew.info/Domestic/DavisVFmodels.html
Wikipedia
www.thayerrags.com
www.gingerbreadcottageliving.blogspot.co.uk
www.quiltingboard.com
blog.ninapaley.com
The Sewing Machine Gazette
The Project Gutenberg EBook of The Invention of the Sewing Machine
by Grace Rogers Cooper