Patent GB-114186-A (GB)
Title: Improvements in Sheaf Shockers.
Inventor: JONES HERBERT SEFTON
IPC: A01D75/06
Filed: 1917-03-19
Abstract: 114,186. Jones, H. S., (Perrin Shocker Manufacturing Co.). March 19, 1917. Sheafing-apparatus.-A shock-forming machine of the type in which the sheaves are caught as they are disengaged from the binder on hooks which rotate in an horizontal' plane and are adapted to discharge the sheaves simultaneously in the form of a shock is provided with flexible means to hold the heads of the sheaves and to bunch them during the dumping of the shock. The binder deck A is provided with an extension B consisting of a frame 16 carrying a plate 17 secured to the front edge of the frame by a U- shaped member 19. Fingers 21 loosely secured to one end of an off-set arm 22 rigidly connected to the compressor arm 11 project through the frame 16 at each side of the member 19. Another finger 25 pivotally mounted on an arm secured to the rocker shaft 10 is adapted to be raised and lowered by engaging a stationary cam 26 secured to the binder deck. The rock shaft 10 is operated from the knotter shaft 15 by a crank 12 and link 13. The knotter shaft carries a member 1 to which the delivery arms 4, 5 are secured intermediate of their length by pivoted links. The inner ends of the arms carry rollers riding over stationary cams which are so arranged that the roller of the arm 4 becomes disengaged from its cam prior to the disengagement of the roller of the arm 5 from its cam, thus permitting the butt of the sheaf to fall downwardly while the head of the sheaf is urged by the arm 5 in an upward direction. The sheaf before being discharged is compressed against the ordinary compressor arm 11 and a second Z-shaped compressor arm 66 which is pivotally mounted on a standard 29 of the shocking mechanism and is pressed against the sheaf by a spring. After passing these compressor arms, the fingers 21 engage the head of the sheaf while the butt is held and gradually lowered by the finger 25, thus bringing the sheaf into position for its engagement by the hooks of the shock-forming mechanism. The shock-forming mechanism is carried by a central stationary shaft 38 rigidly secured to a bracket 30<a> carried by standards 29 secured to a sleeve on the shaft 15, the standards being adapted to be swung about the axis of this shaft to vary the height of the shocking devices in accordance with the height of the crop being cut by means of a link 61 and hand-lever 62. The hooks to engage the sheaves are suspended by arms 42 from a circular member 39 rotated on the shaft 38 by engagement with a gear-wheel 40 on a shaft passing through the bracket 30<a> and driven from the knotter shaft. Each arm 42 as it moves towards the binder deck is swung outwards by a cam to enable its hook to engage the sheaf being discharged from the deck. As each arm 42 swings back, its sheaf strikes against a curved member 58 adjustably secured by a clamp 60 to the shaft 38 and as the member 39 rotates, the sheaves move round the member 58 until the first sheaf moves to a position in which it is encircled by this member. The shaft 38 also has loosely pivoted upon it an arm 50 carrying a pin engaging a stationary cam secured to the shaft so that, as the arm rotates round the shaft in the same direction as the sheaves move round, it is lifted vertically. A flexible cord 53 is secured to the end of this arm and passes through a second arm 55 which is pivoted to swing sideways on the bracket 30<a>. The end of the cord is provided with a weight 57. The first sheaf engages the cord which is drawn round the outside of the sheaves as they proceed round the member 58 until, when the shock is completed, the weight 57 engages the arm 55 and draws it aside as the complete shock is released. The hooks, which are normally held in an horizontal position by rods 44 connected by levers and links to a sliding member 48, are permitted to fall into a vertical position to discharge their sheaves when by the rotation of the member 39 the member 48 has moved into a position in which the rod 35 which normally holds it in a depressed position can slip upwards into a recess in a trip member. The trip member can be moved round by hand in order to permit the release of fewer sheaves than would form a full shock when such release is necessary owing to the machine finishing a run across the field.