Patent GB-191310580-A (GB)
Title: Improvements in Machines for Trimming Embroidered Fabrics and the like.
Inventor: GOLDBERG MEYER
IPC: D06H7/16
Filed: 1913-05-05
Granted: 1914-02-26
Abstract: 10,580. Goldberg, M., Goldberg, A., Goldberg, B., Goldberg, M. C., Goldberg, W., and Goldberg, L. May 5. Cutting-out embroidery etc.; vertical-cutter type for cutting sheet material in direction of feed. - In a machine in which the operative position of the cutter is automatically determined by the outline of the embroidery &c., the cutter 92 has a primary movement to effect a cut, and a secondary movement to bring it into cutting position, which is determined by the engagement of the cutter with the outline of the embroidery &c. without the use of an intermediate member. The embroidered fabric passes over the table 13, between a die member 19 and the edge of a cylindrical feed-member 59. The cutter 92 first swings away from the relief, turning through one-third of a revolution, Fig. 6, while the feed is advancing the work, bringing the relief into engagement with one end of the cutter. The cutter then swings in the opposite direction until it is tangential with the embroidery, this rotation being to any extent up to two-thirds of a revolution. The cutter is raised to engage the work, the feed returns to its initial position, and the cutter is again raised to effect a cut. The cutter is then withdrawn, and the cycle is repeated. The cutter 92 is mounted eccentrically on the end of a rod 90 which is rotated by a clutch cone 156 keyed to the rod and held in engagement with the clutch member 143 by a spring carried by an arm 168. The member 143 of the clutch is operated by a rack 144 reciprccated by levers &c. 149, 152, 128, 127. 125, controlled bv a camgroove 41 in a disk 40 on the main shaft. The cam-disk 40 also controls levers 44, 81 referred to below. During part of the notation of the member 143, the clutch cone 156 is locked against rotation by a pivoted dog 160 controlled by a cam-bar 167 carried by the rack 144, Fig. 4. The cutter-rod 90 is normally depressed by a spring-controlled lever 117, which engages a collar 115 on the cutter-rod. The rod is raised, to bring the cutter into contact with the work, by a lever 133 engaging the collar 115, and connected by a link 132 to the cam-operated bellcrank 131, 125. The cutting-stroke of the rod 90 is effected by the engagement with its lower end of an adjustable screw-stud 93 carried by a slide 73 moving in guides 74. The slide 73 comprises parallel bars 75 connected by crosspieces 76, 77, 78, and is reciprocated by means of a link 79 connecting the central cross-piece 78 to a lever 84 linked to the cam-operated lever 81. The die member 19 is adjustably mounted in the split end of a spindle 17, which is carried by an arm 14 and held down by a spring 32. The spindle 17 can be lifted by a cam-lever 23 engaging a pin 22 on the spindle 17, and is held in the raised position by a spring catch 29. The work is fed by the serrated upper edge 60 of the cylindrical feed-member 59, resiliently supported in the cylindrical upper portion of a coneshaped member 54. The member 59 is encircled by a collar 62 and a curved bearing-ring 63, and the members 59 &c. move in an opening 66 in the table 13, which is closed by a pair of slidable plates 65, 67 having curved flanges 64, 68 engaged by the bearing-ring 63. In order to effect the vertical movements of the feed-member 59, the cone 54 is mounted on rods 53 carried by a yoke 49. This is connected to the camoperated bell-crank lever 45, 44 by a universal joint, which comprises a spindle 47 pivotally connected to the arm 45 and the yoke 49 by means of screw centres 48, 51. The horizontal movements of the cone 54 and the feed-member are effected by an external ring 87 mounted on the cross-bar 76 of the slide 73, and an internal eccentric head 107 also connected to the cross-bar 76. When the slide 73 moves vertically. the members 87, 107 effect a corresponding horizontal displacement of the cone 54. The head 107 is formed on a sleeve 103, keyed on the rod 90, and having a bevelled annular extension 105, turning between the flange of a ring 102 and the upper edge of a sleeve 99, which is carried by an arm 97 on the cross-bar 76. The annular extension 105 has a part 106 of its periphery cut away, and when the rotation of the cutter-rod 90 brings the cutter 92 tangential with the relief, the part 106 binds between the edge of the collar 98 and the ring 102, stopping the rotation of the cutter. In starting the machine, a lever 110 is operated by an external arm 113 to bring the adjustable arm 112 adjacent to a lug 108 on the cutter-rod 90. This limits the rotation of the rod 90 in one direction, and the cutter makes a diagonal series of cuts. until the relief is reached, whereupon the lever 110 is thrown out of operation.