Patent GB-190401956-A (GB)
Title: Improvements in and relating to Machinery for Evening and Grading Soles and other Parts of Shoes and for other Allied uses.
Inventor: BROOKES ALFRED GEORGE
Filed: 1904-01-26
Granted: 1904-04-07
Abstract: 1956. Brookes, A. G., [Lacene Manufacturing Co.]. Jan. 26. Gauges.-Relates to apparatus for grading and evening soles in shoe manufacture, the apparatus being applicable also for other like uses. The pieces of leather are fed successively between the upper and lower rollers a, a<1>, the upper of which is mounted in bearings a<2> adapted to slide in vertical guides a<3>. Loosely mounted on the roller a are two gauging fingers or feelers a<7>, Fig. 2, which are provided above with racks a<14> gearing with segmental racks a<15> mounted on the shaft a<16>. The fingers a<7> are carried by edge guides a<8>, which are drawn towards each other on the rods a<12>, a<13> by a spring a<9>. The racks a<15> are capable of free upward movement on the shaft a<16>, but on their downward movement they turn the shaft by means of projecting lugs. As the leather passes between the rollers a, a', the fingers a' descend on the thinner parts, and cause the racks a<15> to move downwards, so turning the shaft a<16>, while the upward movements of the fingers on the thicker parts of the material do not affect the shaft a<16>. The fingers a<7> thus automatically detect the thinnest part of the material, and at that part effect the maximum movement of the shaft a<16>. The shaft a<16> is connected by the aim a<17> and link a<18> to the sliding bar or guard a<19>, Figs. 1 and 4<a>, the position of which determines the point at which the pawl a<22> on the sliding bar a<23>will engage with the ratchet-teeth a<20> on the upper side of the rack-bar a<21>. The bar a<23> is driven by the crank wheel C<10>, which rotates through a single revolution during each operation. The rack a<24> on the bar a<21> gears with a pinion a<25> on the shaft a<27>, which is provided with cams a<26> engaging adjustable screws or stops a<28> on the yokes a<29>, these yokes being connected by rods a<30> to the journal-boxes of the upper gauge-roll a<32>, which is normally held up by springs s. On the movement of the bar a<23> to the right, it moves the bar a<21> by a shoulder also to the right, thus setting the cams a<26>, and consequently the roll a<32>, in a normal starting position for each operation. On the return movement of the bar a<23>, the pawl a<22> engages the ratchet a 20, at the point determined by the position of the bar a<19>, and thus causes the rack a<24> to adjust the cams a<26>, and consequently the roll a<32>, to a position corresponding to the thickness of the thinnest part of the material as detected by the fingers a<7>. The material is held up to the roll a<32> by the roll a<23>, so that the knife or other cutter a<34> evens the edges &c. of the material to the thickness of the thinnest part. During the passage of the material between the rollers a, a<1>, the rack a<44> on the bar a<19> is engaged by the pawl a<42>, to prevent improper backward movement of the bar. When the piece of material has passed clear of the roller a<38>, which is carried by an arm on a rocking shaft having a second arm a<40>, connected to the rod a<41>, the rod a<41> drops and disengages the pawl a<42>. With this arrangement, the gauging-mechanism may be rendered inoperative on a part of the stock. Thus, a piece of material having a thin end, e g., a sole having a thin end suitable for the heel-end, may be fed thin end foremost into the machine, the roller a<38> being adjusted at such a distance on its supporting-arm that it is first engaged by the material after the thin end has passed the feelers. In such case, the material is evened on the thicker end, and the waste of evening down to the thickness of the thinner end is avoided. The starting and stopping of the crank wheel c<10> is controlled through the pawl c<8> by the lever c<6>, which has a connection, capable of being automatically disengaged, with an arm on a rocking shaft, this shaft having a second arm c<2> on which a roller c is adjustably mounted. When the material enters under the roller c, the lever c<6> is tilted to release the pawl c<8> and allow it to fall into gear, the lever c<6> being then released, so that it returns to normal position to disengage the pawl c<8> when the wheel c'‹ has completed a revolution. A feed-gate c<49> is raised by a pin on the wheel c<21>, once for each operation of the machine, to permit another piece of material to be fed. The pieces of material gauged or evened by the machine are stamped or marked automatically by a die-wheel, having on its edge, in relief, the numbers or characters to be marked on the leather, and on its face figures &c. for indicating to the operator the position to which it is set. The diewheel is carried on the lower end of the stamping- frame c<31>, and is adjusted automatically, to correspond with the gauge of the material, by gearing driven from the shaft a<27>. The frame c<31> is raised by tappets on the disc c<28>, and, when released by the tappets, is forced down by the spring-controlled arm c<45> to stamp the material. The disc c<28> is actuated through gearing c<26>, c<25> by a wheel segment c<24> on the lever c<23>, which is actuated by a pin c<22> on the wheel c<21> driven from the lower p feedroller a<1>.