Patent GB-687184-A (GB)
Title: Sleeve press
IPC: D06F71/28
Filed: 1950-11-29
Abstract: 687,184. Ironing-presses. AMERICAN LAUNDRY MACHINERY CO. Nov. 29, 1950. [Sept. 9, 1950] No. 29286/50. Class 138 (ii). A shirt-sleeve press comprises a pair of upright bucks 11 having a generally vertical mounting on the machine frame 10, the mounting having a pivot connection 25 with the frame, and a sliding connection with each buck 11 for guiding the buck up and down relative to the frame, a pair of pressing chests 26 for each buck, power means connected to the bucks for oscillating them about the pivot into registration with the chests 26, and power means connected to the chests for pressing them against the respective buck. Each of a pair of laterally-spaced bucks 11 is rigid with a rod 24 telescopically mounted within a sleeve 23 pivoted about an axis 25. When swinging from the inoperative position (shown) to co-operate with respective pairs of pressing chests 26 under the action of a pneumatic. motor 43, rollers 51<SP>1</SP> carried by the bucks ride on laterallyspaced tracks 51. This produces an axial movement of the bucks to bring them into correct alignment with the chests 26. The tracks 51 are rotated to a position determined by the setting of a manual control 55, when a finger 50, Fig. 5, rigid with the latter, is engaged by the operator with a shoulder seam of a pair of sleeves secured on the bucks 11. The handle 55 is pivotally linked to a block 58 which is rigid with a rod slidable in a fixed bracket 60. The block 58 is pivotally connected with a block 62 slidable on a rod 63 which is rigid with a boss 64 journalled on a shaft 52. A projection 65, Fig. 3, on the boss 64, is urged by a spring 65a into engagement with an abutment 66 on the boss of an arm 68 which carries a switch 84 at its outer end. The switch 84 is adapted to be operated by a stop-screw at its outer end. The switch 84 is adapted to be operated by a stop-screw 83 on one of the arms 51. The arms 51 are rotated from the inoperative position by a pneumatic motor 75, Fig. 6. Pneumatic motors 35 apply pressure to the respective chests 26. The plunger of each motor is fixed to the frame and the cylinder carries a wedge of differential inclination at 41 and 42, which is driven in between rollers 40 carried by respective arms on each of the chests of a pair, against the action of a tension spring acting between the two rollers. The operation is initiated on the engagement of an actuating member 82 on the finger 50 of a switch 80 which. applies current from lines L1, L2, Fig. 8, to relays R and 107. Relay R closes switch R1, which completes a maintaining circuit for relays R and 107. Relay R also closes switch R2 which is for the moment ineffective. Relay 107 causes operation of a valve 110 which connects a main pneumatic power line 88 with the cylinder of the motor 75 thus causing rotation of the tracks 51, and with a motor 85 which operates an eccentric clamp against an arcuate extension of the member 68 to hold this member fast. When switch 84 is closed by engagement with stop screw 83, current from L1, L2 is applied to a relay 119 which opens a valve 120. This connects the pneumatic line 88 with diaphragms 124. 126, which operate respective valves 125, 127 to reverse the connections of atmosphere and pressure-air to the respective ends of the cylinder of the motor 43. The valve 120 also connects the line 88 with a valve 93 which is adapted to be opened by the action of a cam 95 rigid with the sleeve 23. The cam 95 engages a roller carried by a plunger 94 of the valve when the bucks engage with the chests 26 in the pressing position. The valve 93 then applies pressure air to diaphragms 91 which operate valves 89, 90 controlling the supply of air to the pneumatic motors 35. Closure of the switch 84 in conjunction with switch R2 (already closed) causes current from L1, L2 to be applied to relay 115 which opens a valve 117. This applies air to motors 87 and 87a (87 only, visible in Fig. 1) which operate eccentric clamps against arcuate guides rigid with the tracks 51 in order to hold the tracks fast. Pressure in the motors 35 is released to open the chests, and is reversed at the respective ends of the cylinder 43 to retract the bucks, by the operation of a push-button switch 109. This opens the relays R, 107 and 108, but not 115 which is still connected through a switch 101. The switch 101 was closed by the action of a link 97 at the commencement of movement of the bucks towards the chests, and is opened when the bucks regain their inoperative position. Current to the relay 115 then ceases, the valve 117 is closed and the motors 75, 85 permit return of the tracks 51 to their inoperative positions.