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Lechner Air Mining Machine Photograph
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Lechner Air Mining Machine Photograph
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Description
Title
Lechner
Air
Mining
Machine
Photograph
Subject
Business and Labor
Science and Technology
Geography and Natural Resources
Coal mining
Machinery
Place
Columbus (Ohio)
Franklin County (Ohio)
Description
The
1877
model
of the
Lechner
air
mining
machine
revolutionized
the
coal
mining
industry
. This
image
measures
8.5
" by
11
"
(21.59
by
27.94
cm)
. In the
1870s
,
coal
mining
was
slow
and
dangerous
work
. In a
typical
12-hour
day
,
productivity
was
only
two
tons
per
man
.
Much
of the
labor
involved
under-cutting--a
miner
had to
lie
on his
side
while
digging
a
6-inch-thick
cut
4
feet
deep
across
a
10-to-20-foot
wide
face
. In
1876
, a
Columbus
man
,
Francis
Lechner
,
designed
a
chain-driven
,
air-powered
machine
that
could
undercut
the
coal
mechanically
,
increasing
daily
productivity
by
one
ton
of
coal
per
man
.
Lechner
teamed
up
with
Joseph
Andrew
Jeffrey
and
formed
the
Lechner
Mining
Machine
Company
in
1877
. The
Lechner
coal-cutting
machine
eventually
became
a
standard
for the
coal
industry
. The
Columbus-based
business
,
which
in
1887
became
known
as the
Jeffrey
Manufacturing
Company
, was
one
of the
city's
most
successful
and
long-lasting
firms
of the
20th
century
.
Date of Original
1935
Collection
Jeffrey
Manufacturing
Company
Photograph
Collection
http://www.ohiohistory.org/ohiopix/
Source
Audiovisual
material
;
P
251
;
AL00722
Format
picture
Submitting Institution
Ohio Historical Society
Rights
Online access is provided for research purposes only. For rights and reproduction requests or more information, go to
http://www.ohiohistory.org/images/information
Type
StillImage
File Name
Om1479_1149139_001.tif
Image Height
1943
Image Width
2865
File Size
414.738 KB
Date created
2009-01-09
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