Patent GB-221377-A (GB)
Title: Machine for stamping, impressing or printing characters, designs, patterns, ornaments and the like on metal, stone, wood, porcelain, paper or the like
IPC: B44B5/00
Filed: 1923-10-29
Abstract: 221,377. Petersen, K. M. Oct. 29, 1923. Index type-wheel and type-case machines; machines for embossing. metals, wood, paper, etc.; hammerimpression arrangements. - In a machine for stamping, impressing, or printing characters, designs, patterns, &c. on metal, stone, wood, porcelain, or paper, the stamps bearing the characters or designs, or a part thereof, are movably arranged in a holder which is adjustable relatively to a plunger to enable any of the stamps to be brought into position, and the holder and plunger are adjustable relatively to the material for character &c. spacing. The stamps may be supported in a ring-member and may be arranged either radially or axially. In the former case, the stamp-ring is rotatably attached to a ring 33, Fig. 1, on a support 19 by means of clamps 34 or the like. The stamp-ring is composed of three rings 53, 54, 55, Fig. 12, provided with aligning portions 56. Each stamp 58 is mounted in apertures in the rings and is normally held retracted by a spring 59 accommodated in the middle ring and acting against a transverse pin 60 in the stamp, the pin also engaging in slots in the ring 54 to prevent rotation. For axial arrangement of the stamps, the stamp-ring, which is formed in two parts, is carried on a shaft 46, Fig. 10, rotatably supported in an extension of the support 19, rotation of the stamp being prevented by the engagement of a wedge-shaped rib thereon in a slot in the ring. In each case, depression of a stamp is obtained by means of a lever 43 pivoted in brackets on the support 19 and provided with an eccentric portion 44 which acts against a roller 39 on a plunger 40 guided in a part of the support and normally held retracted by a spring. The stamp-ring is'provided opposite each stamp with a character indication adapted to be aligned with a mark on the support for bringing the correct stamp into position, and also with an index-numeral corresponding to the width of the letter &c. on the stamp. Two or more series of stamps mav be arranged in the stamping, the ring being adjustable at right angles to the direction of movement of the stamps to enable the same plunger to be used for all the series. In another arrangement, the stamps are arranged in two or more series in a rectangular block guided in a slot in the support 19. Printing-point indicators.-The stamp-ring is provided with a pointed adjusting-pin 64, Fig. 14, which serves as a guide when the support is initially adjusted in position prior to commencing printing. The pin, which is normally held retracted by a spring, is eccentrically mounted in a sleeve 65 rotatably and eccentrically mounted in a. rotatable sleeve 66. the two sleeves having flanges at the lower ends adapted to receive a key so that they can be turned for adjusting the pin laterally. Letter-spacing mechanism.-The support 19, Fig. 1, for the stamp-holder is movable along a beam 18, supported above the work table 7, bv means of a screw 21 which is provided at one end with a gear-wheel 71, Fig. 3, acted on, through an adjustable gear 72, by a gear 74 on a shaft 75. The gear 74 is engaged by a spring-pressed pawl on an arm 77 pivoted to the shaft 75, and the movement of the arm is adapted to be arrested by stops 82 in an arm 80 secured to the machine frame. The stops, which are normally held in inoperative position by springs, are numbered to correspond with the numbers indicating the width of the letters on the stamp-ring, so that a correct displacement of the support 19 on the screw 21 can be obtained. In the form shown in Fig. 6, the arc 80 is provided with a series of numbered notches 87 adapted to be engaged by a spring-pressed pawl on an arm 90, which is pivotally mounted on the end of the screw 21, and is provided with a wedge shaped projection 91 lying close to the surface of a ratchet wheel 92 secured on the screw. Rotation of the ratchetwheel and screw to the desired extent is obtained by means of an arm 93 pivoted on the end of the screw and provided with a spring-pressed pawl which is adapted to be lifted out of engagement with the ratchet-wheel by the projection 91. In a modification, the arm 90 is dispensed with, and the arm 93 is provided with a spring co-operating with the notches in the arc 80. Line-spacing mechanism.-The work-supporting table 7, Fig. 1, is provided with a circular rib engaging a recess in a table 5 and is rotatable by means of worm-gearing from a shaft 9. The table 5 is provided with V-shaped projections 4 working in correspondingly-shaped recesses in a casing 2 supported on legs 1, and is adjustable by means of a hand-wheel 12. The stamp-ring support 19 carries a sleeve 30 provided with a hand-wheel 31 and engaging, by a projection in a slot in a rotatable shaft 26 connected bv a sprocket-chain 24 with the shaft 13 of the handwheel 12. Dies.-The marking-portion of each stamp 58, Fig. 12, is formed on an extension 58<1> of the end face, so that the eud fa.ce serves to limit the depth of impression.