Mortise & Tenon Joinery
Mortise and tenon joinery is one of the strongest joints in wood working. We produce all of our wood sash with this type of construction. Most of our bar work, such as sash bars and muntins are mortised into the sash frame. The illustrations and pictures below give a fine examples of the techniques we use. These diagrams were used in early 20th century English trade books.
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This drawing shows a cross section of typical mortise and tenon joinery. The tenon being the male section and the mortise the rectangular receiving end. |
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This is a typical double hung window. Note the pocket door that is cut into the side of the frame for easy access to counter balance weights. |
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the meeting rails are the most difficult part of double hung window
to produce. Notice the detail marked "joggle". Now one has
ever given a definitive answer is to what a joggle or lug is actually
for. Most likely it was added for it's architectural value. Or it could
have been used to cushion the sash incase it fell and hit the sill. |
Here are some fine examples of the illustrations above. This window is one of several gothic style picture windows built for a Spanish revival apartment complex in North Park, San Diego. |
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