Swing-Gate Locks

Swing-Gate Locks (HM2CJK)

Location: Cabin John, MD 20818 Montgomery County
Buy Maryland State flags at Flagstore.com!
Country: United States of America
Buy United States of America flags at Flagstore.com!

N 38° 58.337', W 77° 10.306'

  • 0 likes
  • 0 check ins
  • 0 favorites
  • 97 views
Inscription
Most canal locks were "swing-gate" locks, opened by pulling or pushing long balance beams that projected from the gates.

Stone for the Seven Locks (locks 7 through 14) was cut and finished by stonemasons who were paid by the "piece." Arrows, pine trees, hourglasses, and other signs marked their work for the paymaster. Some of their marks can still be seen in the lock masonry.

The lock chamber was filled or emptied by opening small butterfly gates — called "paddles" — at the bottom of each wooden lock gate. This was done by turning long metal rods, or "stems." Boats going up canal to Cumberland entered the lower level and were lifted eight feet. Boats going down entered a filled lock chamber and were slowly lowered, a job that took about ten minutes.
Details
HM NumberHM2CJK
Tags
Placed ByNational Park Service, U.S. Department of the Interior
Marker ConditionNo reports yet
Date Added Sunday, October 21st, 2018 at 5:02pm PDT -07:00
Pictures
Sorry, but we don't have a picture of this historical marker yet. If you have a picture, please share it with us. It's simple to do. 1) Become a member. 2) Adopt this historical marker listing. 3) Upload the picture.
Locationbig map
UTM (WGS84 Datum)18S E 311860 N 4315944
Decimal Degrees38.97228333, -77.17176667
Degrees and Decimal MinutesN 38° 58.337', W 77° 10.306'
Degrees, Minutes and Seconds38° 58' 20.22" N, 77° 10' 18.36" W
Driving DirectionsGoogle Maps
Area Code(s)301
Which side of the road?Marker is on the right when traveling East
Closest Postal AddressAt or near 6410 83rd Pl, Cabin John MD 20818, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

Is this marker missing? Are the coordinates wrong? Do you have additional information that you would like to share with us? If so, check in.

Nearby Markersshow on map
The Lock-Keepers
0 miles
Drop Gate Locks
0.17 miles
At All Hours
0.17 miles
Lockhouse 10
0.2 miles
Cabin John
1.19 miles
Early Blacksmith Shop
1.51 miles
Burling Defenders
1.63 miles
A Life of Service
1.7 miles
Clara Barton House
1.7 miles
A Heroine's Home
1.71 miles
Check Ins  check in   |    all

Have you seen this marker? If so, check in and tell us about it.

Comments 0 comments

Maintenance Issues
  1. Is this marker part of a series?
  2. What historical period does the marker represent?
  3. What historical place does the marker represent?
  4. What type of marker is it?
  5. What class is the marker?
  6. What style is the marker?
  7. Does the marker have a number?
  8. What year was the marker erected?
  9. This marker needs at least one picture.
  10. Can this marker be seen from the road?
  11. Is the marker in the median?