What is "ledger blade"

Ledger \Ledg"er\(l[e^]j"[~e]r), n. [Akin to D. legger layer, daybook (fr. leggen to lay, liggen to lie), E. ledge, lie. See Lie to be prostrate.]

1. A book in which a summary of accounts is laid up or preserved; the final book of record in business transactions, in which all debits and credits from the journal, etc., are placed under appropriate heads.

2. (Arch.)

   1. A large flat stone, esp. one laid over a tomb.
      --Oxf. Gloss.

   2. A horizontal piece of timber secured to the uprights and supporting floor timbers, a staircase, scaffolding, or the like. It differs from an intertie in being intended to carry weight. [Written also ligger.]

      Ledger bait, fishing bait attached to a floating line fastened to the bank of a stream, pond, etc.
      --Walton.
      --J. H. Walsh.

      Ledger blade,a stationary shearing blade in a machine for shearing the nap of cloth.

      Ledger line. See Leger line, under 3d Leger, a.

      Ledger wall (Mining), the wall under a vein; the foot wall.
      --Raymond.