SCOVILL'S
INSTANTANEOUS LENS AND SHUTTER
American Optical Company/Scovill & Adams
Company 1891 - 1893
Scovill's Instantaneous Lens
and Shutter, manual version
Scovill's
Instantaneous Lens and Shutter, pneumatic version, with a rounded casing edge
adjacent to the aperture versus the squared edge on the manual model. Note the nipple at the base of the shutter,
and the pneumatic valve at the rear.
Scovill's
Instantaneous Lens and Shutter, first appearing on the Henry Clay Camera's sliding-bed models
introduced in the latter half of 1891, is seen in catalogue engravings in the
January, 1892, Scovill & Adams "How
to Make Photographs and Descriptive Price List". Its manufacture is attributed to American
Optical Company/Scovill & Adams based upon the origination and assignment
of its design patent.
With its patent application having been filed on August
7, 1891 and its appearance by late 1891, the shutter was being manufactured for
over three years prior to obtaining the patent.
Designed by Washington Irving
Adams of Montclair, New Jersey, President & Treasurer of the Scovill
& Adams Company of New York, Patent
No. 536,253 was granted on March 26, 1895 and assigned to Scovill &
Adams. With its offset lens barrel, the
shutter is similar to the Mathein (or
Wale & Mathein) Shutter, which was patented about one month earlier on
February 19, 1895, Patent No. 534,337.
Over the past forty years, collectors have referred to the Mathein as a
"Wale Shutter". This is somewhat correct, in that the shutter's
design was patented by Franz J. Mathein
and the lenses are acknowledged to have been made by George Wale. The firm of Wale & Mathein, Marksboro, New Jersey,
marketed the final product and some examples found today are marked "Wale
& Mathein", while others have no markings.
Patent for Scovill's Instantaneous Lens and
Shutter Source: Google Patents
Unmarked Mathein Shutter
Mathein Shutter having the manufacturer's
name, format, lens type (R.R. for Rapid Rectilinear), focal length and serial
number
Despite Scovill's Instantaneous Lens and Shutter being
the first shutter to be offered on the Henry Clay Camera (non-stereoscopic),
most Henry Clays (sliding-bed or hinged-bed designs) are seen today with the
Mathein Shutter. Like Washington Irving
Adams' Patent, Mathein's Patent was also assigned to Scovill & Adams.
Similarities in design, the timing of patents and their
assignment to Scovill & Adams, might suggest some connection between all
these parties. What has been reflected
through advertisements for their non-stereoscopic models, is that early models
of the Henry Clay were equipped with Scovill's Instantaneous Lens and Shutter,
mid-production models with the Wale & Mathein and Bausch & Lomb's Iris
Diaphragm or Unicum during the last three years of production through 1899.
It's interesting to note that Bausch & Lomb's Iris Diaphragm
Shutter was available by at least May, 1891 in E. & H.T. Anthony's
catalogues concurrent with the Henry Clay's introduction by late 1891. So, why didn't Scovill & Adams use the
Iris Diaphragm early on? Even though the Iris Diaphragm would ultimately gain a
solid reputation for its technology, simplicity and performance, it had just
entered the market. Or, perhaps it was an effort by Scovill & Adams to keep
as much of their product in-house, with both patents for Scovill's
Instantaneous Lens and Shutter and the Mathein Shutter being owned by
them.
By October, 1893, Scovill's Instantaneous Lens and
Shutter was being billed as the "Instantaneous Lens and Plain
Shutter" for the Henry Clay, and could be had with a pneumatic release for
$5.00 extra:
Ad from Scovill & Adams' How to Make
Photographs, October, 1893
By 1893, the Wale & Mathein's patent was filed with a
design incorporating a pneumatic release. Henry Clay ads that year continued to
show the Instantaneous Lens and Shutter, which had not yet been upgraded to
reflect the new Mathein Shutter, which also could be had with a pneumatic
release. For 1894 and 1895, the Mathein
Shutter was finally depicted in Henry Clay advertisements, continuing to be
billed as the "Instantaneous Lens and Plain Shutter" with a pneumatic
release for $5.00 extra. By 1896, the Mathein was billed as the
"New Safety Shutter", shown in a smaller 4x5 size on the Henry Clay
2nd model.
This example of Scovill's Instantaneous Lens and Shutter
(non-pneumatic) measures approximately 3-7/8" at its widest point, by
3-1/4" at its shallowest width with a lens barrel diameter of
1-3/8". The shutter and barrel are
devoid of any maker's name, numbers or other markings. The Instantaneous Lens and Shutter was only
shown in advertisements as being available on the Henry Clay Camera, and
appears to have never been offered as a separate item in Scovill & Adams
catalogues. No other references or ads
for the shutter have been found. Only a
handful (both manual and pneumatic versions combined), are known to exist in
private collections, with at least one known example in the George Eastman
Museum's Technology Collection.
With relatively few having been manufactured for about
two or three years, and the few surviving today, Scovill's Instantaneous Lens and Shutter is an exceedingly rare
American shutter.
SIDE
STORY
The
first manual version I acquired, of Scovill's Instantaneous Lens and Shutter, was
found on eBay billed as a "Prosch Duplex". I had previously come across the patent for the
shutter and placed it on my log with a reference to it being
"Mathein-like" in appearance. Having no idea this patent was for
Scovill's Instantaneous Lens and Shutter, and not having looked closely at
early Henry Clay ads, I dismissed the shutter depicted in those engravings as
being a Wale & Mathein based upon its similar shape. It was quite exciting to discover, that this
new shutter that I had never seen before, was in reality was an old shutter I
had seen many times before.