Patent GB-190727190-A (GB)
Title: Improvements in or relating to Machines or Apparatus for Perforating Paper Strips and the like.
Inventor: BARCLAY JOHN CHARLES
Filed: 1907-12-09
Granted: 1908-10-01
Abstract: 27,190. Barclay, J. C. Dec. 9. Type, setting.-Relates to machines for perforating and embossing paper strips for controlling typesetting machines &c. and consists of means for feeding the strip, after each character has been punched, through a distance corresponding to the space occupied on the strip by the character punched, and of special means for operating the punches, and in the provision of a special onerevolution clutch between the motor and the perforating &c. devices. Each key lever 7, Fig. 3, is provided with lugs 12, 13 for operating the punch-selecting bars 9 and one of the feed-control bars 8 respectively ; these bars may be mounted horizontally on parallel pivoted links 10 or may consist simply of a tension wire fixed at one end. The depression of any bar 9 causes the depression of a clutch-controlling bar 16, through the medium of a universal bar 14 mounted on parallel pivoted links 10 and a hook 15. The feed-wheel 78, Figs. 7 and 30, of known construction, is provided with a number' of vertically-sliding pins 80 adapted to enter a notch 83, of a length equal to the maximum feed required, in a plate 82 mounted above the wheel 78. A vertical slot 87 extends from one end of the notch 83 through the plate 82 and through a plate 85 above the former. The depression of any bar 8 causes a corresponding bar 88 to slide forwards, through the medium of levers 10, 103, to bring its wide portion above a vertically-reciprocating rod 104. Each bar 88 is arranged beneath a lug on one of the pin-setting arms 101, Fig. 30, and, as the bar 104 rises, being operated by a cam 93 on a shaft 45 through the medium of a lever 95 and spring 105, the selected bar 88 and corresponding bar 101 are raised to set a pin 80 in the notch 83. The feed-wheel is carried by a spindle 107 driven through gear-wheels 108, shaft 109, frictionclutch 110, and gearing 60 by a motor 4, and, when allowed to rotate, it rotates until the set-pin 80 reaches the end of the notch 83, thus giving the required feed. The lever 95 also causes a rod 91 to reciprocate vertically, and an arm 90 which is carried by the rod 91 and works in the slot 87 in the plates 82, 85 re-sets the pin 80, which is in engagement with the end of the notch 83, to. allow the feed-wheel to rotate. The pins 80 may also be set directly by the selecting-bars 8, instead of from the power-shaft. The friction-clutch comprises a hollow wheel 110 and a disk 114, and a spiral spring which is attached at one end to the hub of the disk 114 and bears by means of a friction pad on the inside of the flange of the wheel 110. A claw clutch 111, operable by a handlever 112, is also provided. This clutch is normally closed and is only opened when the supply of paper is to be renewed ; when the clutch is opened, a pin 117 on the lever 112 enters a notch in the disk 114 to prevent the spring of the clutch 110 from unwinding. A wheel 25, Fig. 30, driven frictionally by an internal spring in the opposite direction to the feed-wheel 78, engages with the paper strip 22 and keeps it in tension. Figs. 18 and 29 show the arrangement of punches when used in.three rows, as for the ordinary Wheatstone telegram transmitter. Only the upper and lower rows of punches are directly operated, and lugs on the punches in-these rows engage with lugs on the middle-row punches to operate the latter. A lug 46 on each lower-row punch engages with lugs 47 on two of the middle-row punches. The middlerow punches also carry alternately lugs 49, 50 ; the punches which carry the lugs 50 slide freely through the lugs 49. Lugs 48, Fig. 29, on the upper-row punches 27 engage with the lugs 49 which in turn engage with the lugs 30, so that each punch 27 operates two middle-row punches 28, and alternate punches 29 operate two and three punches 28. The hammers 36, 37 on the ends of arms 32, 33 are normally above the punches 27, 29 so as to miss them when driven en bloc by a driver 42, which is pivoted at 43 and is operated by a cam 44 on the shaft 45. The arms 33 are arranged behind the arms 32 and are driven directly by the driver 42 ; lugs 38 on the arms 33 drive the arms 32. When the arms 32, 33 are depressed by the selecting-bars 9 through the medium of links 10 and levers 34, their hammers come in line with the selected punches which are then driven forward. A spring 41 and universal bar 39, on pivoted arms 40, return the arms 32, 33. Bars 52, 56 acting on lugs 48, 55 on the punches 27, 29 respectively, and controlled by springs 54, 57, return the punches. A shoot 121 is provided for the waste paper. Figs. 10 and 11 show one method of controlling the one-revolution clutch on the shaft 45. A lug 65 on the eliding member 61 of -the clutch is normally held against and out of engagement with the member 59, which is driven from the motor through gearing 60, by one end of a catch lever 63, the other end of which is supported by a pivoted arm 68. The depression of the bar 16, Fig. 3, causes the arm 68 to release the lever 63, which is then rocked by a spring 72 to release the lug 65. A spring 62 then closes the clutch and the shaft 45 rotates. The lug 65 then acts on the bell-crank extension 633 of the lever 63 to re-set the latter and allow a spring 71 to re-set the arm 68 ; the lug then engages the lever 63 to stop the shaft 45 after one revolution, a cam 73, shown in section, having engaged the lug to force the member 61 of the clutch out of engagement with the member 59. The lever 63 may be re-set by a separate cam. When the message is printed in successive lines on a page, line indicator is provided. A cutter 122, Fig. 29, is provided for severing the strip.