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Picture frame clamp

  • US 4,714,373 A
  • Filed: 06/19/1986
  • Issued: 12/22/1987
  • Est. Priority Date: 06/19/1986
  • Status: Expired due to Fees
First Claim
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1. A clamping device used in the construction of a metal picture frame which is formed of metal framing members that are joined in mitered relation, each of the members having an enclosed channel with a longitudinally extending slot that is bordered by a pair of flanges which are spaced in parallel relation from a channel bottom, the device comprising:

  • (a) an L-shaped rigid plate having a pair of outstanding legs which are at right angles to each other;

    (b) a rotatable lever associated with each of the legs, the levers each having a cam and a connecting handle which a person uses to rotate the lever and(c) means mounting the levers on the legs for rotation about an axis which is normal to the longitudinal axes of the channel and slot, the mounting means, handle and cam of each lever being disposed in relation to each other such that the cam will engage the channel bottom while remaining free of the flanges and simultaneously force the rigid plate against adjacent flanges of the framing members and cause relative movement between the framing members and legs, whereby adjacent framing members are moved into tighter mitered relation, when the handle is rotated from an unlocked position where the cam is disengaged from the channel bottom, to a locked position where the handle abuts the adjacent leg of the plate in farthest spaced relation from the other leg.

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