Patent GB-637410-A (GB)
Title: Improvements in or relating to the baling of hay, straw and the like
IPC: A01F15/14
Filed: 1947-10-28
Abstract: 637,410. Baling presses. COLLINSON, E. Oct. 28, 1947, Nos. 28703 and 32558. [Class 94(i)] In a method of tying up hay in a baling machine, binding material is displaceably guided at one side of a baling chamber and is periodically displaced in the region where it is guided, to ensure its engagement with a hook or needle which is passed transversely through the machine from the opposite side and subsequently withdrawn so as to draw a loop of the binding material to the opposite side so that an operator can tie up the bales from the opposite side without manual co-operation from, or walking round to the first side. In the construction described, upper and lower lengths of string 7 drawn from balls in a box 17 are passed through a tensioning device carried by the flange 13 of an angle-sectioned string guide 9, and then through respective vertically-spaced holes 19 in the other flange 14 of the guide 9. The tensioning device comprises a pair half-round bars between which the string passes, which are pressed against the flange 13 by springs 22. The guide 9 is mounted for vertical reciprocation relative to the machine frame by means of slots 44 which engage bolts 15 rigid with the frame. The strings extend rearwardly along the side of the bale in process of formation and then pass transversely through the baling chamber around the rear of the bale to free ends on the side at which the operator stands. The string guide 9 is maintained in its upper position (as shown) by means of a detent 35 which engages an aperture 34 in the flange 14 and is rigid with a depending arm 37 which is pivoted to the. frame at 36. In operation, a needle 32 is inserted by the operator through the baling chamber to the position shown in Fig. 2 at a point in the baling cycle towards the end of formation of the bale when the feed of material to the chamber has been temporarily discontinued and when the ram is in its forward position. The next rearward stroke of the ram displaces the needle 32 rearwardly so that the needle engages the arm 37 and displaces the detent 35. The string guide thus drops under gravity and draws the lengths 7, 7 of string into engagement with the arms 38 of the needle. The needle is then manually withdrawn and its hooks 39 engage the string 7 and draw upper and lower loops through the bale. The needle is then placed on a support 30 carried by an arm 25 fulcrummed to the frame at 26 and in slotted engagement with the string guide 9. The weight of the needle thus raises the guide 9 to its original position in engagement with the detent 35. The string is severed at the loop and one severed portion is secured to the previously mentioned free end of the bale just formed while the other portion forms the free end for the next bale. In a modification (Fig. 5, not shown), the aperture 34 for the detent is replaced by a projection which is associated with a cam formed on the flange 14 and arranged so that it engages the detent on the downward movement of the string guide 9 so that the arm 37 is raised clear of the hooked ends 39 of the needle 32 as the latter is being withdrawn.