Patent GB-190214724-A (GB)
Title: Improvements in or relating to Mechanism for Arranging or Assorting Nails as to the Direction of their Heads and Points.
Inventor: BOULT ALFRED JULIUS
Filed: 1902-07-01
Granted: 1903-09-01
Abstract: 14,724. Boult, A. J., [United Shoe Machinery Co.]. July 1. Nailing.-Relates to apparatus for arranging nails with their heads or points in one direction, and for delivering the arranged nails either head or point first to the required position for being driven. In the arrangement shown in Figs. 1 and 3, a reciprocating frame B' carries an overflow pan B<3>, to which is jointed an eccentric-rod B<5> actuated by the eccentric B<6> on a rapidlyrotating shaft B<7>. A shaft C, in line with the shaft B<7>, is driven continuously by belt gearing, and, by means of worm gearing C<2> and bevel gearing D<3>, drives the shaft D<x>. Both shafts C, D<x> carry discs C<4>, D<5>, concave on one face, and each forming part of a friction clutch, the corresponding parts C<5>, D<6> being fast to the shafts B', D', either of which is brought into action by means of a pivoted lever E, normally held by the spring E' in position for the clutch C<4>, C<5> to be closed and the other clutch open. The parts C<6>, D<6> are cut to form radial shoulders and inclined surfaces near the shoulders, to act in conjunction with inclines on the ends of the clutch lever ; shoulders on the lever act as stops for the shafts. The shafts B<7>, D<7> slide in their bearings, and are acted upon by plungers a and adjustable springs a'. The frame B' carries a raceway made in two sections F, F<1> of different inclinations and at different levels. The receiving- section F has at one end wide grooves f communicating with narrow grooves f<3>, shown in Fig. 5, which terminate at a shoulder f<10> extended across the race to form a space b. The section F<1> has grooves b<1>, Fig. 6, forming continuations of the grooves f<3>. All nails that get into the grooves f<3> continue to travel in the grooves b<1>, while nails which enter the grooves f and do not get into the grooves f<3> drop through the spaces f<1> into the overflow pan, and run back to the source of supply. The nails in the grooves f<3> have their heads and points arranged indiscriminately ; those having their heads leading turn quickly into the space b and enter the grooves b<1>, while those which travel point first along the grooves f<3> have their points received in grooves in the reverser b<4>, which is adjustable to suit nails of varying lengths. The nails travel along the receiver until the heads fall into the space b, and they then turn over and travel along the grooves b<1> head first. The transferring-device G for receiving and delivering the nails is pivoted on journals g, and is grooved to receive the nails, the heads of which meet an adjustable stop H ; wide grooves m, Fig. 7, carry any superfluous nails back to the overflow pan. One journal carries a lever g<1>,either end of which may be jointed to the link g<4>, the opposite end of the link being connected with a pivoted lever g<5>, normaily held against a atop g<8> by a spring g<7>, so that the lower end is in position to engage a cam g<9>, and the device G is at rest. By means of the rod h the clutch parts D<5>, D<6> may be brought into position to rotate the shaft D<7> ; the cam then acts upon the lever g<5>, and the table G is turned to deliver the nails head first into separate pockets H', provided with guides to lead the nails to the required position. The pockets may be placed in the position shown in dotted lines when it is required to deliver the nails point first, the link g' being then connected to the upper end of the lever g<1>. The reciprocating slide B<1> is at rest while the nails are being transferred to the pockets. In a modified form, the part A, Fig. 8, of a heel-nailing machine, preferably of the type described in Specification No. 5405, A.D. 1902, [Abridgment Class Boots &c.], carries the frame A<1> of the nailarranging machine. The main shaft A<3>, shown separately in Fig. 29, carries a fast pulley A<4> secured by the pin A<5>; a loose pulley A<7> provided with a sleeve A<6> and retained in position by a collar A<8> ; a worm A<10> gearing with a worm-wheel on the shaft c<9> ; and a clutch for connecting it to the shaft B<5> which actuates the raceway. The clutch consists of a disc B<2> provided with a stem B<3> fitting a socket in the shaft B<5>, and a pin B<9> sliding in a collar box fixed to the shaft. A flange on one side of the disc B<2> receives friction discs a, a<1>. The discs h have central apertures to permit the tenon B to rotate, and peripheral projections a<2> to fit recesses in the flange a<4>. The discs a<1> rotate with the tenon B, and the spring B<4> normally presses the disc towards the shaft A<3>, so that the two shafts A<3>, B<5> rotate together. The raceway consists of grooved bars b<3>, Fig. 12, an upper section D<8>, and a connecting-section D'‹. Pins e" arrange the nails longitudinally and direct them to the race section, and at the lower end of the section D<8> the material between the grooves is cut away to form openings through which the nails drop when not properly arranged in the grooves. The nails which arrive point first at the section D<10> are reversed by the heads overbalancing, as described in connection with the machine shown in Fig. 1. When the nails are to be discharged, the reciprocation of the raceway is stopped temporarily by stopping the shaft B<5>, by means of a pivoted lever a<6>, Fig. 29, carrying on one arm a block bearing against the disc B', and on the other arm a roller which is acted upon by a cam to press the disc B<2> towards the shaft B<5> to disengage the two shafts. A reciprocating motion is imparted to the raceway from the shaft B<5> by means of eccentrics B<10>, Fig. 12, and links C embracing rods C' carried by pivoted arms C<2>, the upper ends of which are forked to engage studs C<5> on the frame C'. The lower end of the frame carries studs C<9> engaging pivoted arms C<10> which are connected by links D<2> with the rods C'. The links D' are connected by cross-bars carrying a nail-returning table which reciprocates with the raceway but in an opposite direction. The receiver E<1> is adjustable towards or from the shoulder b<x>, to provide for nails varying in length. To facilitate gauging the required distance, a slotted gauge E' is secured to the frame C<7> by a clamp screw E<3>, and is provided with a series of holes to receive a cottar-pin E<4>. A rocking-shaft E<5>, carried in the arm C<8>, is provided at one end with an arm, and with a series of studs 5, Fig. 18, entering notches 6 cut in bosses E<7> on a series of nail stops E<8>, one for each bar b<3>. The stops are normally upheld as shown, but, when one series of nails is to be discharged, the rocking shaft is turned, and the stops descend to intercept the next series and to hold them on the raceway. The transferring- device consists of a rod b<4>, shown separately in Fig. 21, cut away to form projections 10 grooved to receive the nails leaving the bars b<3>. The leading ends of the nails enter notches 12 in an adjustable plate 13. Stops 24 bevelled at the ends stand higher than the grooved projections 10, to catch any imperfect nails and to prevent them from entering the shoot. Springs and strops are provided to hold the device b<4> normally in the position shown in Fig. 18. The shoot is formed of a stationary bar F<1>, to which is pivoted a bar F', each bar being grooved to form a series of passages corresponding to the grooves on the raceway. Tubes F<10> clamped between the bars conduct the nails to the heel-attaching machine. Stop-pins may be inserted in holes b<32> in each groove to cut off the supply of nails. To operate the transferring-device b<4> , an arm G<7>, Fig. 8, is attached to it at one end, and is connected by a link G<9> to a pivoted lever G<10>, which carries at its lower end a roller c' acting against the face of a cam c<3> on the shaft B<8>, Fig. 31 ; the shaft is bored to receive the stem c<6> of a disc C<7> forming part of a clutch similar to the clutch described in connection with Fig. 1, to drive the shaft B<8> in unison with the shaft c' when the nails are to be transferred, the shaft B', Fig. 29, then being stationary. The shaft c<9> is driven by worm gearing e<12>, A<10> from the main driving-shaft. Normally, the clutch parts connecting the shafts B<8>, c<9> are held apart by means of a rod H<5>, Fig. 36, entering a notch in a cam projection on the clutch part c<7>, Fig. 31. In operation, to provide the nailcarrier of the heeling-machine with nails, it is swung into position and raises a rod which, by means of links and a rocking shaft, withdraws the rod H<5> from the notch, allowing the spring c<8> to bring the clutch into action and to rotate the shaft B<8>. As the disc c<7> rotates, the rod is pushed by a spring into the depression 20, and the cam H' acts against the rod laterally and releases the clutch. The cam c<3> moves the lever G'‹, and the link G<9> turns the transferring- device b<4> into position to deposit the nails head first into the shoot. During the motion of the arm, a projection on the arm retires from below the arm E<6>, Fig. 8, allowing the stops E<8> to drop ; the projection then turns the device b<4>. The magazine, consisting of a curved plate e closed at one end by a plate e<1>, is driven by friction from a grooved roller d<3> having a toothed wheel d' engaging a pinion d' on the shaft c<9>. A pin J<2> forms a pivot for a frame which normally holds the magazine in position as shown, and also holds it in position when turned down to receive a fresh supply of nails, a latch locking the frame in the upright position. A second roller assists in supporting the magazine. The ends d<7> are padded with leather to permit the rollers to adjust themselves laterally. The cylindrical portion e<5> and face e<6> are provided with shelves e<8>, Fig. 12, to pick up the nails and to drop them upon an arch e'‹ spanning the part D<8> of the raceway. Feeders e<8>x arranged behind the shelves convey the nails to the shelves. When the nails are to be disc