ALUMINUM
TRIPLEX SHUTTER
Prosch Manufacturing Company, New
York
1894-1899
With few exceptions, Prosch Manufacturing Company shutters
are characterized by their beautiful lacquered finishes, draw-filed pattern
work and scarified etching. Their fanciful
mechanisms are like no others and not much is hidden from view. The phrase "where art meets
engineering" really applies to Prosch: they are to shutters what
Duesenberg is to the automobile. Prosch shutters are in demand by collectors,
simply for their scarcity and their outright beauty.
By 1894, Prosch was offering to construct their Triplex shutter
in Aluminum in an effort to reduce weight.
Aluminum versions of the Triplex and Columbian Triplex are known to
exist, and conceivably,
Aluminum Triplex Stereoscopics could have been ordered. These Aluminum versions were in contrast to
the standard all-brass shutters for which Prosch is best known today:
Aluminum versions were more expensive, and in the case of
the Improved Triplex of 1899, priced about 29% to 42% higher depending on the
size.
The large Aluminum Triplex shown above is equipped with four
speed-tension settings and a wheelstop aperture. Throughout much of its production, the
Triplex could be had with either Waterhouse stops or a wheelstop,
finally being equipped with an iris during its last few years. The largest of
the five openings on this example is 1-3/4", indicating it to be a No. 3 size,
probably suitable for use on a 6-1/2x8-1/2 or 8x10 camera.
The Triplex name plate is prominent, along with "Prosch
M'F'G' Co., Makers, N.Y., Pat. Nov. 2d 1886" engraved on the shutter's
face, next to the serial number. The
date refers to Cyrus Prosch's Patent No. 352,098 for his
earlier Duplex Shutter design, assigned to the Prosch
Manufacturing Company. The hardware, in Aluminum or nickel-plated brass with an
Aluminum mounting flange, represents the purest intent of the lightweight shutter's
design. The lenses, probably a rapid rectilinear design, are unmarked as to
maker. The shutter's approximate
dimensions are 6-1/4" wide and 4-3/4" tall.
Other Aluminum Triplexes such as this one with a later
serial number, have been seen with all-brass knobs, valves
and linkage assemblies:
Despite being offered for about six years, the Aluminum
Triplex's premium price would ultimately translate to lower demand and limited production. Relatively few of these shutters were made
and not many are seen today.
Ad from Scovill's The
American Annual of Photography and Photographic Times Almanac for 1894
Ad from The International Annual of Anthony's Photographic Bulletin,
1895