double your dating dvd series - Dating roll top desk
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extending horizontally therefrom at the front of the desk and beneath the upper surface of the desk top tothe latchor bolt. In a roll-top desk, the combination of a roll top, tracks for the side edges of said top, a latch or bolt situated in one of the tracks to the roll top, yieldingly held in interlocking engagement, an opening and closing member of the desk, and means interposed between said member and the latch or bolt that positively moves the bolt or latch to un-- locking position when said opening and closing member of the desk is moved to an open position, said means permitting movement of said member to closed position independently of the, position of the latch or bolt. In a r0 1 top desk, the combination of a roll top, tracks engaged by the edges thereof, a spring actuated latch or bolt situated in one of the-tracks and normally tending to locking position, a drawer having a surface extension, and a cam in a drawer below the desk top to actuate said rod. In a lock for roll to desks, the combi': nation of a spring catch ocatcd inthe track of the roll top-with a lever extension therefrom, a keeper on the lower end of theroll" top to cooperate with the-said spring catch, a rod below the desk top-to actuate the'said: lever extension, and a cam in a drawer below the desk top to actuate said rod.
This independence of the roll top and the drawer is of importance because 1t is not necessary to leave the drawer unlocked or partially open while top, and a latch or bolt operating means adapted to be moved by said opening and closing member and.
With just a little study of these examples, it is easy to spot true hand made construction vs. The name dovetail comes from the appearance of the joint, resembling the triangle shape of a bird's tail.
The earliest examples are from furniture placed with mummies in Egypt thousands of years ago, and also in the burials of ancient Chinese emperors.
As the dovetail joint evolved through the last one hundred thirty years, it becomes a clue for the age and authenticity of antique furniture.