Patent GB-606602-A (GB)
Title: An improved machine for gauging the thickness of veneers and the like and marking them accordingly
IPC: G01B7/06
Filed: 1946-01-16
Abstract: 606,602. Gauging and marking veneers &c. SAUNDERS-ROE, Ltd., SARO LAMINATED WOOD PRODUCTS, Ltd., and LEECH, L. Jan. 16, 1946, No. 1518. [Class 106 (ii)] A machine for gauging the thickness of veneers or other sheet material and marking them accordingly, comprises a thickness gauging device, means for traversing a veneer past the gauging-device, a plurality of marking- devices, and means controlled by the gauging- device for effecting selective engagement of the marking-devices with the veneer, to mark thereon markings distinctive of the gauged thickness, the selected marking-devices remaining in contact with the veneer so long as the gauged thickness remains unchanged. The machine comprises a table 10, Fig. 1, mounted on supports 11 and carrying three rollers 12, 13, 14 which are driven at progressively slightly increased speeds from an electric motor 15 and over which the veneer 21 is moved. Above the rollers 12 and 14 are the idler rollers 22 and above the roller 13 is a gauging-roller 26 which operates an electric gauging-device 37. The roller 26, Fig. 4, is mounted by a ball. bearing 27 on the lower end of a gauging. spindle 28 mounted in a fixed guide bracket 30. The gauging-spindle 28 carries at each side a pair of rods 29 which face a pair of adjoining rods 31 carried by the bracket 30. Between each pair of rods 29, 31 is a plate 32 carrying a series of vertically spaced balls 33 to provide an anti-friction mounting for the spindle 28 which can therefore move vertically, but is restrained from rotation. At the top end of the spindle 28 is a gauging anvil 36 which cooperates with contactor arms 38, 39 which are connected in the circuit shown in Fig. 11. The position of the arms 38, 39 as determined by the gauging-roller 26 determines which one of five lamps 40A-40E, Figs. 1 and 11, shall be lit and so indicates to the operator that the thickness of the veneer is within certain limits which have previously been fixed in setting the contactor arms 38, 39. Each lamp is in parallel with a relay which is energized when the lamp is lit to close an associated contact to cause an associated electromagnet 54A-54E to be energized and so cause an associated printing-wheel 42, Fig. 7, to come into contact with the veneer. An additional group typewheel 45 is provided which is, by an electromagnet 52, brought into engagement with the veneer when any of the wheels 42 are operative to print the letter H on the veneer, so indicating to the operator that the veneer is within certain limits. In Fig. 7, the wheel 45 is shown in operative position, its magnet 52 is energized and attracting an armature 53 at one end of a pivoted lever 46 which is thereby moved to bring the wheel 45 at its other end into contact with the veneer. Each type-wheel 42 is operated in like manner and is inked from a container 60 by the intermediary of a felt wheel 61 fed by a drip feed through a jet 62 at the base of the container 60 and opened when the lever 46 is in the operative position shown in Fig. 7. A cut-out switch 56 is arranged to be operated when no veneer is present under the gauging- roller 26 to prevent operation of any of the printing-wheels. A bell 67 or a bell 68 may be rung when the veneer is under or over size respectively.