The Low No. 6 Variation 2 (below) has a more complicated linkage from the pneumatic cylinder to the shutter leaves than does Low No. 6 Variation 1.
The manufacturer of the Packard Ideal No. 6 Shutter was located in Kalamazoo, MI. The manufacturer of the earlier, and very similar, Low Shutter No. 6 Shutter was also located in Kalamazoo, MI. It is not a stretch to conclude that the Packard is essentially the Low, made by the successors of the Low company.
References:
Descriptive Catalogue and Price List of Photographic Apparatus,
E. & H.T. Anthony & Co. (New York, NY), November 1893, p.76
Wilson's Cyclopaedic Photography, Edward L. Wilson (New York,
NY), copyright 1894, p. 464
Illustrated Catalogue of Photographic Equipments and
Materials for Amateurs, E. & H.T. Anthony &
Co. (New York, NY), December, 1895, p. 76
Illustrated Catalogue of Photographic Equipments and Materials for
Amateurs, E. & H.T. Anthony & Co. (New York, NY), February, 1898, p.
76
Illustrated Catalogue of Photographic Equipments
and Materials for Amateurs, E. & H.T. Anthony & Co. (New York, NY),
November, 1898, p. 72
Catalogue No. IIII of Professional and Amateur Photographer's
Supplies, Wm. F. Uhlman (St. Joseph, MO), c.1901, p. 25
Photographic Goods 1842-1904, The Anthony and Scovill Co., (New
York, NY), 1904, Catalog A, p.36
Photographic Catalogue, The Anthony and Scovill Co., (Binghamton,
NY), 1906, p.135