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New Garden Historical Commission
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Isaac Jackson, 18th Century New Garden Clockmaker
by Peg Jones
Near the intersection of Route 41
and New Garden Road is a large white house which was once the
home of one of Chester County's premier clock makers. Isaac
Jackson, who made tall clocks during the latter half of the
1700's, built this house and lived here for over forty years. We
remember him for his graceful yet simple unembellished clock
cases and precision clockworks.
Born near West Grove in 1734, Isaac Jackson grew up in a
family with mechanical skills; his father and grandfather were
weavers as well as farmers. As a young teenager, Isaac was
apprenticed to the master clockmaker John Wood, Sr. of
Philadelphia. After acquiring the skills of his trade, he was
bound over to Quaker clockmaker Benjamin Chandlee, Jr. of
Nottingham as a fully trained journeyman sometime in the early
1750's. He worked in Chandlee's clockmaking shop for about four
years and then, in 1757, returned to the family farm east of West
Grove where he continued his clockmaking until 1762.
In 1762, William Jackson, Isaac's father, deeded him a 200
acre farm in New Garden Township. Here Isaac and his bride, a
distant cousin named Hannah Jackson, built a home and lived for
over forty years. The farm, located southeast of New Garden
Meeting House, extended across the present Route 41 and includes
the New Garden Elementary School property. Today, the northern
part of this tract is still being farmed and producing crops.
In Isaac Jackson's day, it was not unusual for farmers to
engage in some sort of industry during the winter months.
However, because of his skill, the extent of his training and the
number of his clocks which survive, Isaac was probably more
clockmaker than farmer. Tax records list him as a silversmith,
and he is known to have worked in both brass and pewter. The
works of his clocks were brass and the dials were often of brass
with silverplating. Not only was Isaac Jackson a clockmaker, but
he was also a cabinetmaker who used walnut to make the cases of
his tall clocks. Isaac's Jackson's clock cases are all similar in
design and reflect the convictions of simplicity of both the
Quaker clockmaker and his Quaker clients.
Three surviving early Jackson clocks have only one hand,
showing the influence of his training with John Wood, Sr. These
one-hand clocks, unique in Chester County, have only thirty-hour
movements, meaning they will only run thirty hours after being
wound, and therefore have to be wound every day. The remainder of
the twenty-seven known Jackson clocks have eight-day movements
which need winding only once a week. Isaac Jackson signed the
faces of his clocks "Isaac Jackson, New Garden", but
sometimes, due to lack of space, "Isc Jackson" or
"New Gar".

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Thirty Hour - One Handed Clock
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Eight Day - Two Handed Clock
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Isaac Jackson died in 1807. His house and 105 acres were
willed to his daughter, Alice and her husband, Enoch Lewis. The
Lewises enlarged the house to its present size and opened the New
Garden Boarding School for Boys.
A number of Jackson clocks are still owned by Chester County
families and, after two hundred years, continue to tell time. An
Isaac Jackson clock is also among the tall clocks displayed at
the Chester County Historical Society in West Chester.
Patricia Harlan McClure of Beaverton, Oregon sent us a photo
of her family's Isaac Jackson clock. It is thought to have been
purchased by her great-great-great-great-grandfather David Harlan
Sr who lived five miles from Isaac Jackson in London Grove
Township in the mid 1700s. Over its 250 years it has become a
well travelled clock having chimed day and night for seven
generations of the family in houses in London Grove Twp, Hartford
MD, Bel Aire MD, Cleveland OH, southern California, and now
Oregon.


Inscription: "Improve Time Without Delay, For it Passeth
Swiftly Away, Isaac Jackson, Newgarden"