Story & Photos by: ROBERT STOPPER, LYONS
Winter maintenance and repair at Lock E-27 in Lyons provides
a spectacle seldom seen by anyone: the lock is drained and the huge, super
massive “mitre gates” (lock gates) are clearly visible from the topside catwalk
down to the bottom rubber sill seal - the same type of gates used 100 years ago
when the lock was constructed.
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The gates are massive
steel structures. At the upper end of the lock, the gates are 18 feet high, 25
feet wide and 24 inches thick. The gates are taller at the low end of the
lock. So how do the gates work? How do
they seal water in or seal water out?
The operation of the actual locks is controlled by the
Lockmaster in the “Operating” or “Control” Stand located directly adjacent to
the locks. When a boat has entered the lock, the Lockmaster utilizes an
electronic control panel and skillfully closes the locks- “not too fast and not
too slow”- just right.
Each gate has a circular white oak timber post (quoin)
bolted to the anchor or pivoting end of the gate. The white oak timber post
(quoin) swings on a pivot mounted in the lock floor, and the top of the timber
post (quoin) is attached to the lock wall with two adjustable anchor arms.
The Lockmaster swings the gates toward each other and
eventually the flow of water into the lock is stopped. The space between the
two gates is sealed, and the space at the bottom of the gates is sealed. How
does it happen?
Lock E-27 utilizes “mitre” gates. The mitre gates close at a
slight angle pointed upstream. The seal between the two gates is formed when
the massive white oak timbers bolted to the inside edge of the gates are forced
together. The seal at the bottom of the gates is formed when the gate squishes
a rubber seal against a ledge called “the miter gate sill” (Think “door sill”).
The pressure of a minimum 12 feet of water against the gates solidifies the
seal or lock.
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Once the gates have been closed, the Lockmaster moves to the
gates at the opposite end of the lock, enters his Operating Stand with all the
controls, and continues the historical saga which officially began on May 15,
1918- proudly locking boats through Lock E-27 on the Western Erie Canal in
Lyons, New York, Milepost 220.99.
This article was part 3 of 3.
(NYS Canal Section 6
Superintendent Dan Craine and Lock E-27 Supervisor John Albanese assisted with
information for this series).
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