Patent GB-191408678-A (GB)
Title: Improvements relating to Wood Working Machinery for Endmatching Material for Floors, Ceilings and the like.
IPC: B27C5/06
Filed: 1914-04-06
Granted: 1914-10-22
Abstract: 8678. Marks, E. C. R., [Rose, D. M.]. April 6. Planing and moulding.-An end-matching apparatus for boards or strips used for floors, ceilings, &c. comprises an end-grooving machine A, an end-tongueing machine B, carriers C for supporting the free ends of long boards passing through the machines A, B, and a conveyer D for moving short strips from the machine A to the machine B. The grooving-machine A comprises a standard 2 formed with horizontallyextending members 3, 4, the standard carrying a trimming-saw 51, a grooving-saw 59, and the driving-mechanism, and the members 3, 4 carrying the work holding and feeding mechanism. The board to be tongued is fed to the machine by projections 16 on an endless chain 11 passing over pulleys 12, 13 at the ends of the member 4 and supported and guided by fixed plates 17. During the feeding movement, the board is supported and pressed against a vertically adjustable plate 6 on the member 3 by the upturned ends of pressure-bars 20 resting on springs 21 carried by a plate 23, which is adjustable vertically by means of hand-operated wedge members 27. The upturned ends 19 are formed with guiding-ribs entering the under surface of the boards, and the receiving- edge of each bar 20 is slightly rounded to facilitate the passage of the boards. The springs 21 are positioned so as each to act on two bars, and those on the cutter side are stronger than those on the other side. While being placed in position for the tongueing operation, the main part of the board rests on loading-tables 37 carried by parallel weighted levers 40, 42 mounted on shafts 34, 43 supported by frames 39. The shaft 34 carries gauge stops 33 which are depressed as the board is moved forward by the projections 16, thereby rotating the shaft against the resistance of a spring and acting through pin-and-slot connexions to tilt the levers 40, 42 and to lower the tables 37 until the board is deposited on lugless chains 38. The chains 38 move at the same speed as the chain 11 and form part of the carrier D. The tables are held yieldingly in an horizontal position by means of a spring catch 46 engaging a shouldered cam 47 provided with a weighted arm 48 resting in a stirrup secured to the frame 39. The trimming-saw 51 and the grooving-saw 59 are carried on the standard 2 by horizontally adjustable plates 55, 70 respectively, and the grooving-saw shaft 61 is adjustable vertically in its bearings by means of a screw 63 operated by a handle 64. The trimming-saw shaft 52 is driven from the main shaft 72 by means of a belt 57 passing over guide and tensioning pulleys. The belt 57 also drives the saw shaft 61 through a pulley 67 and bevel-gearing 68, 69. The shaft 72 drives the chain pulley 12 through belt and toothed gearing, the belt being tensioned by a pulley operated by a lever 98. The bearings of the other chain pulley 13 are adjustable by means of screws 14. The trimming-saw is used to cut off defective ends and also to cut apart different grades of material. The long boards on leaving the machine A rest at one end on a rail 90. Fig. 14, and at the other are supported by the end of the trough of a conveyer belt 91, so that they can be readily introduced into the machine B for the tongueing operation. The short pieces leaving the machine A drop at one end on to the bolt 91 and are conveyed to the tongueing - machine. The tongueing- machine B is similar to the grooving-machine A, except that inclined tongueing-saws 96 are used instead of grooving-saws 59.