Patent GB-190405311-A (GB)
Title: Improvements in and relating to Machines for Assembling the Slices Cut from a Deal or Plank into Compound or Composition Board.
Inventor: MAYHEW GEORGE SKAATS
Filed: 1904-03-03
Granted: 1905-03-03
Abstract: 5311. Mayhew, G. S. March 3. Wood substitutes. - Machinery for assembling the slices cut from a deal in the formation of a compoboard consists of a magazine 2, Fig. 1, into which the planks are fed, provided with an adjustable opening 66. The boards are fed forwards by a double reciprocating clutch-frame 48, 49 working in guides 4 and actuated from the maim shaft 5, Fig. 2, by gearwheels 6, 41, 32, the latter carrying a cam 33 which, through the pivoted levars 34, 37, operates a clutch 65 alternately engaging with the bevel-wheels 39,40 mounted on the shaft 38 connected to the shaft 44 by gear-wheels 42, 43. The two latter shafts carry pinions 45, 46 engaging with racks 47 arranged on the lower surfaces of the clutches 48, 49. Figs. 3 and 4 show detail views of the clutches consisting of a claw 51, pivoted at 52 to the top piece 53 and raised by a spring-actuated projection 54. The top piece is connected to the rack 47 by a spring-controlled bolt 56, which serves to take up the pressure exerted in joining two pieces together. Any sawdust beneath the claw escapes by an opening 62 coinciding with others in the framework when the pusher is at the forward end of its stroke. The end of the board as it leaves the magazine is coated by a glue brush 8 carried on an arm and caused to rise from a glue tank 10 by an arm 71 carrying a roller engaging in a cam-shaped slot 73 arranged in a sliding frame 74 connected by a pin 75, Fig. 2, to the pusher 48. The board is carried forwards between upper and lower guides formed of longitudinal bars 11 connected by tubular spacing-bars 77 through which pass central rods, by a series of wheels 60, a clutch 12 in the form of a wire brush being arranged to allow forward movement only. The boards are dusted with sawdust by fans 13 arranged to pick up sawdust from the pans 14, and behind these is a series of cleaning-brushes 15 placed between the guides 11 which are staggered as shown in Fig. 2. Hot air for drying the boards is supplied to the casing 67. Behind the casing are arranged upper and lower paste tanks 16, from which a layer of paste is transferred by brushes 17 and rollers to the board, and this is then coated with paper by heated pressing-rollers 18 rotating at the same speed as the board. The mechanism may be made adjustable so as to produce any thickness of board. To make a thicker board for partition linings or ceilings, a thick coating of cement is interposed between the board and paper by means of the mechanism shown in Fig. 9, consisting of two cement tanks 27, joined by a common funnel 28, out of which the paste is forced by pistons. The cement is formed into ridges by two grooved rollers 26, after which it receives the coating of paper. The Provisional Specification contains a description of the manufacture of the boards, for introduction into the assembling- machine, from a compound deal, and states that paper may be replaced by other sheets, such as veneers or sheet metal.