Patent GB-751594-A (GB)
Title: Improvements in or relating to means for controlling character width or spacing in apparatus for composing or reproducing typographical and like matter
Inventor: CROUCHER HENRY GEORGE
IPC: B41B7/04
Filed: 1953-07-24
Abstract: 751,594. Type-making &c., machines. MONOTYPE CORPORATION, Ltd. July 12, 1954 [July 24, 1953], No. 20636/53. Addition to 719,374. Class 100 (3). Justifying type.-Apparatus for composing or reproducing typographical and like matter of the kind in which the character width or spacing is controlled by a displaceable member of wedge or like form which is interposed in the path of a movable abutment to limit the periodic travel thereof to variable amounts according to the position of the wedge member, the travel of the abutment being utilized to control the character width, comprises means for positioning a die case or its equivalent for character selection, means for adjusting the wedge member so that the character width is varied for any given position of the member, and means for positioning the wedge member in variable relation to the position of the die case so as to enable different unit arrangements to be obtained. Tongs 3, Fig. 1, set the die case in the usual manner according to which pin 5 in a pin tray 4, is set and at the same time the tongs by means of a lug 2 set the locking rack 1, a lug 9 on which is thereby set opposite one of a series of crank members 33, Figs. 1 and 3. The known locking bar actuating rod 21 is then moved and causes a pusher plate 14 through the lug 9 and the selected member 33 to set up a pin 13 in a second pin tray 10. The set of members 33 is interchangeable according to the unit arrangement. The set of members 33 shown in Fig. 3 is for the English Standard S5 unit arrangement for a fifteen row die case, and provides for 5, 6, 7, 8, 9, 9, 9, 10, 10, 11, 12, 13, 14, 15, 18 units, the member 33a for nine units thus having three arms 33b, 33c, 33d so as to set up the same pin 13 for three positions of the lug 9, i. e. three pins 5. Tongs 52 actuated at the same time as the matrix jaws 53 on the tongs 3 of the known machine described in Specification 8633/99, [Class 100], close on the selected pin 13, and extensions 51 thereon engage a lug 49 to set the controlling wedge member 37. The operative face of the wedge member, which engages, the said movable abutment 48, is a face of a pivoted member 42, which is adjustable by an adjusting wedge 41. The wedge 41, Figs. 1 and 7, is set manually or automatically by a movable member 85, as described in Specification 719,374, through a lever 86, a control plate 76 and links 71, 72 pivoted to lugs 69, 70 on the actuating rod 68 for the member 41 and on the wedge member 37 respectively. Alternatively, there can be used a lever 87 pivoted at 88 on a post 89 secured to the member 37 and engaging a roller 91 on a post 92 on the rod 68. In another form, the plate 76 carries a downwardly projecting cam having a pair of outwardly directed faces engaging a pair of rollers connected to the lugs 69, 70. In order that equal movements of the member 85 shall.produce equal adjustments of the member 42, the member 41 may have a cam form. Alternatively, the lever 86, Fig. 7, may be actuated by a vertically sliding cam member 95. The abutment 48 may be performed with a pivoted uppermost part so as to engage the member 42 squarely at all inclinations thereof,. and said pivoted part may include a centrally located spring-loaded member projecting above it, which holds the member 42 away from the said pivoted part when the abutment 48 is not operative, and which enters a groove in the member 42 when the abutment is operative. Specification 706,312 also is referred to. caused to form around oil droplets by coacervation and is then gelled to form microscopic oilcontaining capsules. The coacervation may be brought about by addition of a salt solution or by mixing two sols having different ionic charges followed by dilution or adjustment of the pH until coacervation occurs. Suitable colloid materials are gelatin, albumen, alginates, casein, agar-agar, starch, pectins, carboxymethylcellulose, Irish moss, and gum arabic. Sodium or ammonium sulphate may be used to coacervate gelatin, or gelatin and gum arabic sols may be mixed to provide a complex coacervate. The oil may be emulsified in the colloid, or in either colloid in the case of complex coacervation. Specified oils include mineral oils, fish oils such as halibut liver oil, vegetable oils such as cotton seed oil, corn oil, castor oil and coconut oil, essential oils and synthetic oils such as methyl salicylate and chlorinated diphenyl. The oil may contain additives such as dyes used in making inks, medicines, perfumes, oil-soluble vitamins and adhesives. The gelled coacervate may be used to coat paper to form a transfer film, the oil containing a marking ink or a reactive material such as trichlorodiphenyl containing crystal violet lactone. On bringing such paper into contact with paper.coated with attapulgite and rupturing the capsules with a stylus or other instrument a dark blue impres sion is formed. Detailed descriptions of methods of producing coacervation are given.