Patent GB-189803122-A (GB)
Title: Improvements in and relating to the Manufacture of Can-bodies and to Apparatus therefor.
Inventor: YOUNG DAVID
Filed: 1898-02-08
Granted: 1898-07-09
Abstract: 3122. Young, D., [Board, J. L.]. Feb. 8. Making cans.-Machines for making can bodies are provided with mechanism for shaping the edges of the blank, bending the blank round a form and engaging the shaped edges, closing the seam, and applying flux to and soldering the joint. The blanks contained in a receptacle C are fed through the first part of the machine by projections d<3> on endless chains D<9>, the wheels D<8> of which are actuated by a cam D', on the driving-shaft B', lever D, and pawl-and-ratchet mechanism. The wheels D<8> can make a slight return motion after each partial rotation, to remove the projections d<3> clear of the blank. The blanks are carried over dies E<12>, E<13> under a slide E<7>, E<8> reciprocated by a crank and connecting-rod E<1>. The edges of the blank are first shaped as shown in dotted lines in Fig. 12 between the dies E<10>, E<11>, E<12>, E<13>, the blank being held in position by a stationary block E<17> and a spring block E<16> carried by the slide E<8>, The blank is then fed over a stationary support G<5> and under a form or horn F<8> held raised by cam and lever mechanism, the blank being pressed up against the form F<8> by a spring pin with bevelled ends, and its position under the horn regulated by spring-yielding fingers. The form F<8> is then lowered by the cam and lever mechanism to clamp the blank, which is bent round the form by the folding wings F<9>, F<10> actuated by the cam F, rod F<2> with a yielding connection T to the lever F<5>, and rods F<6>, F<7> connected to lugs f<10> on the wings pivoted to the support G<5>. The connection F' for the wing F<10> is slightly telescopic, and a spring f<7> causes the wing F'‹ to act in advance of the wing F<9>. The engaging ends S' of the blank are closed by a pressing-tool G adjustably mounted in the reciprocating slide E<7>. The tool G also flattens out the raised portion S of the blank, increasing the diameter of the can body so that it can be easily pushed off the form F<8> on to another form or horn composed of a cylindrical portion H and three strips H<1>, H<2>, H<3>. Flux is applied to the seam by a felt &c. strip K<13>, carried by a shaft K<9> in the end of an arm K<6> mounted on a shaft K<4> oscillated by an eccentric K, rod K<2>, and arm K<5> to bring the strip K <13> alternately into contact with the flux in a vessel K<15> and the seam. A wheel on the shaft K<9> is connected by a chain K" with a stationary wheel on the bracket K<3>, so that the strip K<13> remains always vertical. The can blanks are then. fed forward by projections on two continuously-driven horizontal chains J, and are carried to the soldering apparatus. The solder strip P, Fig. 27, is fed forward as required by rollers 0, O<1> actuated by a cam M on the shaft B<5>, rod M<1>, and ratchet- and-pawl lever M<4>. The rod M<1> also operates by link mechanism a knife M<7> for cutting off a strip of the solder, which falls down a trough O<4> to a melting-vessel with slotted base through which it is delivered to the can body. The can bodies are carried under soldering-irons Q<1> resting on the horn H and carried in trough-shaped holders Q and heated by gas &c. burners Q<7>. The horn or mandrel H is supported centrally by rollers n and at the end by a roller N'. After passing from the soldering-irons, superfluous solder is removed by a pivoted metal wiper resting with sufficient weight on the seam.