Help sought to check locking design
Posted: Mon Jan 07, 2013 3:30 am
Here is something on which I would appreciate the erudition of fellow subscribers to this forum.
The lever frame I have been constructing has almost reached the point at which I can start to install the locking. The plan is for this to be accomplished by direct lever locking in a two-channel box, with each channel accommodating five bars. I’ve already devised both the locking table and a dog chart to implement it, and have checked as best I can that my design will supply the locking required. However, I’m acutely conscious that I may have overlooked a required lock, or introduced unnecessary locks that will prevent proper operation of the layout.
What I’m hoping, therefore, is that some kind person will take a look at the design and bring any such errors to my attention. I can supply diagram, locking table and dog chart, together with the spreadsheet I used as an aid when checking whether I had implemented all the locks required. I think I’ve done most of work required to get this right, but believe that it needs a fresh pair of eyes to pick out the errors to which I’ve blinded myself.
At the moment the dog chart is in CAD format with separate layers for each bar position, as this made it easier to check the design of the locking as it progressed. If anyone fancies taking a look at this within a CAD package I’ll be glad to discuss file format preferences (e.g. I should be able to export it in .dxf format). Otherwise I can generate a jpeg of the whole dog chart.
To give you an idea of what's given rise to this enquiry, here is a picture of the frame in its current state, with the lockbox mounted on brackets on its nearside.
The lever frame I have been constructing has almost reached the point at which I can start to install the locking. The plan is for this to be accomplished by direct lever locking in a two-channel box, with each channel accommodating five bars. I’ve already devised both the locking table and a dog chart to implement it, and have checked as best I can that my design will supply the locking required. However, I’m acutely conscious that I may have overlooked a required lock, or introduced unnecessary locks that will prevent proper operation of the layout.
What I’m hoping, therefore, is that some kind person will take a look at the design and bring any such errors to my attention. I can supply diagram, locking table and dog chart, together with the spreadsheet I used as an aid when checking whether I had implemented all the locks required. I think I’ve done most of work required to get this right, but believe that it needs a fresh pair of eyes to pick out the errors to which I’ve blinded myself.
At the moment the dog chart is in CAD format with separate layers for each bar position, as this made it easier to check the design of the locking as it progressed. If anyone fancies taking a look at this within a CAD package I’ll be glad to discuss file format preferences (e.g. I should be able to export it in .dxf format). Otherwise I can generate a jpeg of the whole dog chart.
To give you an idea of what's given rise to this enquiry, here is a picture of the frame in its current state, with the lockbox mounted on brackets on its nearside.