Looking for suggestions on a latch - Router Forums
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post #1 of 12 (permalink) Old 07-20-2014, 04:29 PM Thread Starter
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Default Looking for suggestions on a latch

Hi to all,

I have just extended my workshop (still small by most of your standards) by 8 x 4 feet mainly for a wider working area.

While planning it I decided to add extra windows and on a suggestion of my son, decided to make the entire window section so it could open like a canopy. This will both help me to get large objects in and out and also double as extra working space for example when I am cutting up an 8 x 4 sheet, as it can protrude though the opening which is lower than my saw hight and even remain dry in the good old English weather!

My problem is that the swing out part is 8 x 5 and quite heavy and needs to close firmly so that it contacts the draught excluder strip around the edge.

I have tried to come up with an idea that would do this and have failed so far.

The only things I have come up with are ones for securing household windows which I believe are called Fitch fasteners over here, but they are woefully small for such a big heavy panel and would need to exert a significant amount of force even if I used 4 or more.

What would be ideal is some sort of toggle or cam type latch and even better if made from wood, or mostly as my metal stock and metalworking tools are pretty basic.

So guys, any ideas on a good latch for the job?
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post #2 of 12 (permalink) Old 07-20-2014, 05:01 PM
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Aside from Marine Style hatch dogs like we use aboard ship, the only thing I could think of that might work are draw latches.

Some samples are on this page, you will probably have to find a local supplier.

McMaster-Carr

Doug
1 John 1:9
Fredericksburg, VA




http://disasterreliefeffort.org/
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post #3 of 12 (permalink) Old 07-20-2014, 08:25 PM
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What about one of those old style overhead garage doors. They had springs and roller tracks but the door was a one piece flat panel. Steel arms on either side with springs helped to swing the door outward and up, but then the top pivots were also rollers that allowed the door to slide back into the ceiling area of the building once it had reached a near horizontal position. I think they still sell these door openers, but the rolling multi section overhead doors have become way more popular.

The attached link shows what I'm talking about.

One Piece Garage Doors | Precision Overhead Garage Door of Clearwater, FL


Charley

Central North Carolina
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post #4 of 12 (permalink) Old 07-20-2014, 08:30 PM
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More to the point, Al, is how you're going to fully open the window(?), That's going to be a very heavy beast to lift out and up! Especially if it's a sealed unit.
Over here (NA) those are referred to as top hung awning style.
http://www.naturalwindows.com/produc...onmongery.html
Aluminium Joinery Hardware window and door handles, accessories and parts
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post #5 of 12 (permalink) Old 07-21-2014, 04:06 AM Thread Starter
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Hi Guys,

Doug, the draw latches seem a good idea but I can't find any decent sized ones here but still looking. Maybe I could make something similar out of wood but bigger?

Charley, there's not too much I can change about the door, which is already up and running, so I can't implement any of the garage door ideas mate. But again its the holding firmly closed that's the problem.

Dan, the door probably weighs about 150lbs or 70kg so lifting from outside is not too bad even on my own. I did originally plan on using 2 linear actuator rams to open it but they take up too much valuable wall space so I ditched the idea and went for the low tech lifting method, me, and a leg to place under it when open, though I know this may not be so safe in windy conditions so I will have to rethink the support. I will never need to open the window more than about 45 degrees. PS the windows are large but made from twin wall polycarb so only weigh about as much as a pack of smokes! They do have wire mesh behind them though to deter the numerous thieves that are about nowadays.

Keep the ideas coming please Guys, Al
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post #6 of 12 (permalink) Old 07-21-2014, 06:42 AM
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Me, I would be happy to see a list of all the specialty US hardware suppliers, there are a few things that I have been looking for. N
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post #7 of 12 (permalink) Old 07-21-2014, 07:29 AM
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A couple of over centre latches should do the trick, and they're fully adjustable if anything ever changes.
Wow this is a long link..
https://www.google.com.au/search?saf...iw=320&bih=505
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post #8 of 12 (permalink) Old 07-21-2014, 08:20 AM
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Al, would a simple toggle clamp work?
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post #9 of 12 (permalink) Old 07-21-2014, 11:34 AM
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"...PS the windows are large but made from twin wall polycarb ..."
A few years ago (OK, a lot of years ago) one of my subtrades offered me a bunch of very large Lexan sheets. He had picked them up for free from a reno project on a Juvenile Detention Ctr.
Apparently the original architects had specified Lexan to prevent the little hooligans from breaking the large picture windows in the dining hall. Said little hooligans discovered, very quickly, that if they kicked the Lexan it'd flex so much that It'd pop out of the frame! Hence the reno.
(I turned down the free Lexan as I figured what the heck would I do with it? )
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post #10 of 12 (permalink) Old 07-22-2014, 06:46 AM
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