Patent GB-191215110-A (GB)
Title: Improvements in Hat Pouncing Machines.
Inventor: TURNER ARNOLD
IPC: A42C1/08
Filed: 1912-06-28
Granted: 1913-06-30
Abstract: 15,110. Turner, A. June 28, 1911, [Convention date]. Pouncing.-A reciprocating pouncing-pad is caused to operate at a higher speed and for a longer time upon the sides and ends of a hat than upon the top of the crown in order to produce a uniform finish. The head 26, Figs. 3 and 8, carrying the lathe and the hat block 19 is turned slowly about a vertical axis during the pouncing operation, and the hat block 19 is designed to be rotated at three different speeds; (a) a varying speed obtained through elliptical gearing 28 and cone clutch 44 for pouncing the sides and ends of a hat; (b) a uniform slow speed for working upon the top of the hat; and, (c) a fast speed which is used for veluring and finishing and is obtained from the main driving-shaft 11 through bevel-gearing, telescoping shaft 50, and clutch 44. The head 26 is moved round by a pin which engages a rotating ratchet-wheel 22 mounted on the hollow shaft 21 of a spur-wheel 20. When the head approaches the position shown in Fig. 8, the pin is disengaged from the ratchet-wheel by means of an arm and a stationary cam-track, the head 26 then being temporarily locked in position by a stop on the base 10. The head 26 is swung round manually to the position for starting by means of a handle which releases the locking-pin. The primary shaft 30 of the elliptical gearing is geared to a vertical shaft 16, which is driven from the main shaft 11 through an adjustable friction wheel 14 and worm-wheel 15 &c. The head 26 is slowly rotated by means of a pinion 25 carried by the worm-wheel 15 and meshing at the same time with the wheel 20 and with a stationary spurwheel 23 having one tooth less than the wheel 20. The gearing 28 for giving intermittent fast and slow motion to the hat block 19 comprises, (n) elliptical wheels 32, 37 respectively keyed on a shaft 29 and loosely mounted on the shaft 30; (b) a spur-wheel 33 having clutch pins adapted to engage with the wheel 37 when the wheel 33 is moved axially by a pivoted lever 38 cooperating with a cam-track 60 on the head 26; and, (c) a spur-wheel 35 having a pin-and-slot lost-motion connexion with the shaft 29. When the wheel 33 is uncoupled from the shaft 37, it still remains in driving connexion with the wheel 35 and gives a uniform slow speed to the hat block. The lathe shaft 41 may be prevented from turning while removing or fixing on the hat by a spring-pin adapted to enter a socket 41<a> in the shaft 41. The pouncing-pad 57 is provided with an automatic paper feed and is held against the hat by a spring device that is released automatically at the end of the pouncing operation. The pad is carried by a reciprocating rod 68 sliding in guides 69 on two pivoted arms 71. A strip of sand-paper 68<b> is drawn from a roll 68<a> through guides 68<c> on to a reel 57<b> provided with a ratchet and pawl, which is operated by a finger 57<c> on one arm 71 on the completion of a pouncing operation. The rod 68 is reciprocated by an eccentric 73 on a shaft 74 driven from the main shaft 11 through chain gearing, a clutch 77, and coned pulleys 75, 75<a>. The speed of reciprocation of the pouncing-pad is changed from fast to slow as it travels from the side to the top of the hat by means of a flexible band 74<a> forming a driving connexion between the coned pulleys and moved axially by a rack 74<c> geared to a rack 74<e> on the head 26. At the end of the movement of the head 26 a lug 87 thereon, striking a lever 85, uncouples the clutch 77 and stops the movement of the pad 57. The rack 74<e> also increases at the same time the speed of turning of the head 26 through a chain h and rack c adjusting the friction wheel 14. An adjustable shoe 72<a> on the arm 71 meets with a roller on a bracket 26<e> as the head 26 swings round, causing the pouncing-pad to touch the corners of a hat very lightly or not at all. The pouncing-pad is held yieldingly against the hat by a coiled spring 88, Fig. 9, fixed to a rotatable shaft 92, on which is secured a ratchet wheel 93. A lever 91 connected by a rod 90 to the arm 71 has a pawl engaging the wheel 93. The pressure of the spring 88 is counteracted and the pad is released from the hat by a block 98 on the head 26 engaging an arm 96 connected by a pawl to the wheel 93. Specification 17,190/97 is referred to.