Patent GB-174007-A (GB)
Title: Improvements in or relating to barrel trussing and hooping machines
IPC: B27H5/10
Filed: 1921-06-07
Abstract: 174,007. Orme, J. A. June 7, 1921. Addition to 156,407. Machines for trussing and hooping. The construction of certain parts of the machine described in the parent Specification is modified with a view to rendering the action more automatic. The driving-head b has the usual notched disc arrangement enabling the driving arms to move together, but the hand-operated or controlling arm b<1>, Fig. 1, is pivoted to lugs b<2>, b<3> on the head, the latter lug having a notched edge engaging with a plunger detent actuated by a grip release mounted on the arm. The end of the arm is formed into a segmental grooved pulley to which one end of a rope or chain u is attached, the rope &c. passing over a second pulley and being connected to the notched disc b', so that movement of the hand-operated arm after releasing the detent, opens or closes all the arms, the sideways movement necessary with the means described in the parent Specification being done away with. The sides of the barrel are gripped between clamping-heads (not shown) on trunnion spindles f carried in bearings slidably mounted by means of inner and outer slippers c<2>, j respectively on the pillars of the machine. The spindles are forced inwardly to engage the barrel by wedge-shaped portions c on frames formed by pairs of arms a, which portions, on the descent of the driving-head, force inwardly rollers d mounted on cross-heads connected bv bolts to the rear ends of the spindles. The spindles are retained in the gripping position by dog-catches m<1>, Fig. 5, mounted on bell-cranks n pivoted tc the slippers j and engaging racks formed towards the rear ends of the spindles. Compressible spiral springs on the spindles afford a compensation means enabling barrels of different diameters tc be securely gripped. A barrel being placed in position by hand on the bottom table, the driving head is caused to descend and the hoops of the uppermost end are successively forced into position, starting with the bilge hoop, the barrel meanwhile becoming securely clamped between the spindles. When the end hoop has been driven, the driving-head is raised a little further until snugs c<1> on the rods a engage under the slippers c<2> and so raise the trunnion bearings, lifting the barrel clear of the table. The barrel is now turned over and the hooping of the other end is completed. The driving-head is again raised, higher than at the end of the first hooping operation, but first a foot-lever t, Fig. 13, is depressed, causing engagement of the parts of a clutch coupling p<2>, so that the raising of the barrel now causes, by reason of the consequent upward movement of the rod p', the rock-shaft r which is fitted with lifting arms r', Fig. 16, to tilt the frame or shoot r<4>, which previously rested on the table. The raising of the trunnions also brings the short arms of the bell-cranks n into contact with a stop-piece p, thereby releasing the catches m<1> from the trunnion spindles, whereupon the freed barrel can slide down the shoot. The foot-lever is then released, allowing the shoot to fall instantly back on the table. Certain of the moving parts of the machine are counterweighted to enable them to be more easily manipulated.