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Portable Door Lock
Of the six constructions I have found, all function only with an inward opening door and a striker plate on the doorframe. | |
This design should work with nearly all doors and doorframes for motels, guest bedrooms and bathrooms and toilet stalls, where locks are missing or wish to be supplemented. The portable lock is made up of two folding steel plates like hinges bound together by a strong, thin, flexible strap. The strap
extends from the middle of one plate, which presses against the outside door and frame surfaces, between the door and frame and through the middle of the second plate, which presses against the inside door and frame surfaces.
When the lock is mounted on the closed door, it looks like this from above:
outside <-->-- inside
When the strap is then tightened and locked in place from the inside, it looks like this:
outside I-I---- inside
The plates’ tight grip on both sides of the door and doorframe would make forced or surreptitious entry nearly impossible.
[link]
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I'd use it to lock people in. |
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Is the strap visible from the outside, or is it fixed to the inside of the outer plate? |
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Also, I know you said it was a flexible strap, but I could still forsee problems, especially when tightening, if you are trying to lock a door with has a recess in the frame into which the door closes. |
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Let me see if I understand this correctly: the plates go into the gap between door and frame, and the action of pulling the strap wedges the plates into the gap?
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[stupop] Yes, the strap should be fixed to the inside of the outer plate to deter damage. It might be tricky to make a strap thin, flexible and maybe slippery enough to glide through the angle(s) of a recess. |
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[Ling] No, no wedging. Pulling the strap straightens the plates. They don’t really need to be angled; I just thought it might make mounting easier. |
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Let me see if I understand this correctly: the plates go into the gap between door and frame, and the action of pulling the strap wedges the plates into the gap? |
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no, the plates go either side of the door and frame, the strap goes in the gap between the door and the frame, to keep the plates together |
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I wonder why my anno came up twice like that? |
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If the plates are on the outside of the door, a simple hacksaw will probably let the burglar get in. |
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//If the plates are on the outside of the door, a simple hacksaw will probably let the burglar get in.//
I believe this is for toilet doors, where there isnt much risk of being burgled.
Except maybe by turd burglers.... |
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Just remove the door to prevent uninvited
guests from opening it. |
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