DE14448C - Innovations to the horseshoe nailing machine, which is protected by patent No. 7683 - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The present invention relates to innovations in the Brundage forging machine for the manufacture of horseshoe nails, common nails and other articles of a similar shape.

In this machine, the iron bars of suitable cross-section, which were previously in heated in an oven, cut into small pieces and placed in a number of dies, which are arranged in a circle, forged out by means of a single steam hammer by blows in rapid succession.

The pliers, which grasp the cut ends selbstthätig, they lead jerkily from one die to the other, they are always about 90 ^0, the nail shaft DAF beautiful square is stretched.

The construction of the pliers, etc., and of the machine in general, must be known here must be assumed, since the description of the Brundage machine by English Patent publications is published. A few form the subject of the present patent application New features of this machine, which are to be described below.

First of all, the means used to move the carriage F have become different. The movement is carried out by the switching lever Q, Fig. 2, 2 a and 3, which swings around the horizontal shaft t ^x , which is mounted in the plate R and the eye u ^{1 of} the plate 5. The upper end of the lever Q carries a role i ^l which plays in a groove of the guide P screwed to the hammer. This arrangement does not deviate from the known one, on the other hand the lower part of the lever Q receives in a milled recess a ratchet of the new shape k ¹ , which can swing about the axis m ¹ and by means of a spring n ¹ constantly engages with those on the circumference of the carriage F attached teeth I ^{1 is} held.

As the hammer moves up and down, the lever Q will swing back and forth and, by means of the pawl k ^{1, will} jerk the slide F with it. Since when the hammer falls, the slide must stand absolutely still, but the pawl k ^x goes back over the next tooth when the hammer hits, so two special pawls o ¹ r ¹ , FIG. 3, are attached to fix the slide F. The pawls o ¹ and r ^l , rotatable about o ² and r ² , are pressed on by spiral springs p ^x and i ¹ , namely the pawl r * prevent the slide from falling and o ¹ prevent the process, so that it can occur during the stroke of the Hammer is firmly closed. During the next forward movement the lower end of the lever Q presses on the end q ^{1 of} the pawl o ¹ before the pawl k ¹ engages behind the next tooth , and this is lifted out so that it no longer prevents the forward movement of the carriage. After the slide has moved, Q releases the pawl Ό ¹ again, and it can then fall into the next tooth gap.

T and V, Fig. 3, s, 6 and 7, are two supports, one of which is fixed, the other is movable and which carry the separating jaws b ² and z '. These cut from the iron

Claims (5)

Rod off the pieces from which the nails are to be forged. The fixed support T is also provided with the dies d2, to which the dies c2 of the support V correspond. The support V is provided with an arm e2 which carries a roller which rests against the circumference of a cam disk f2; the latter sits on the shaft. ^ 2, Fig. ι and 3, which is provided with the gear wheel i2, which engages in the teeth ll of the carriage F. The circumference of the disk / 2 is designed in such a way that the arm e2 immediately retracts somewhat after the iron rod has received its first blow from the hammer. The jaws b2 and cut off a piece of the iron bar, while the material is pressed laterally through the dies c2 and d2. The support V goes back a little, so that it lets go of the rod, the hammer falls down again and forges the head of the nail, giving the same pressure above and below as the dies c2 d2 caused laterally. Now the support V is moved again by the cam / 2 against the support T, and the rear jaws of the dies c2 d2 press the further advanced material again laterally; the latter is pushed forward against the piece W by the forceps o2. These tongs are moved by a lever / 2, FIG. 3, which is caused to vibrate by the teeth h2 of the carriage F. The lever p2, Fig. 3, ends in the approach q2, which pushes like a wedge between the legs of the pliers ο2 and closes the same. The lever p2 at the same time carries a ring r2, which is placed around two pins extending upwards from the legs of the pliers o2 and opens the pliers when the lever moves back. When the nail has received its last blow, the pliers open in the known manner, in that the rear end is pushed into the housing of the pliers, so that the front jaws open and the finished nail can be dropped. A lever L is now used for this purpose; the same is moved by a cam g1, which sits on the shaft g2, Fig. 3 and 4. The emptied pliers receive a new rod end to be forged to the nail with the next movement of the carriage. The lever L goes back, and the jaws of the pliers close under the influence of the inner spring and the cone of known construction, grasping the already finished head of the nail. The die c2 is fastened by means of a hook screw χ, the die d2 in the support T by means of the screw u2 and the shear jaw z1 on the support T by means of the screw v2, and the jaw b2 is inserted into a dovetail-shaped groove and is clamped by the hook screw χ1. Patent claims: 1. The arrangement of the pawl k ¹ , which swings in a recess in the lever arm Q ¹ , in combination with the locking pawls o ^x and r ^l for the purpose described above. 2. The arrangement of the cam disk f ^l and the movable support V for moving the shearing jaws and the dies for forging out the nail heads. 3. The arrangement of the ring r ² on the nose q ^{2 of} the lever p ² for opening and closing the pliers o ² , which feeds the iron rod to the machine. 4. The arrangement of the lever L, which is moved by the shaft g ² and the disc g ¹ and causes the jaws to open. 5. The type of fastening of the dies c ² d ² and shear jaws b ² z ¹ , as described above and shown in the drawing. 1 sheet of drawings.