DE161331C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The present machine is similar to those fulling machines in which mediating a movable die, the leather between the upper and lower clamping jaws or Walls are constrained, the lower of which is placed on an upright movable support are.

However, the new machine differs from the known ones in the following points:

ίο i. The form stamp can be between the 'Pairs of plates are moved in such a way that with a single insertion of the upper leather into the Machine the front sheet and the back sheet can be milled one after the other.

2. There are pliers for grasping and on the sliding piece that supports the lower plates Stretching the leather is arranged prior to fulling the second sheet.

3. The lower plates respectively. one of the same are arranged foldable so that after Walken the forming die together with the upper leather can be removed.

The new machine is shown in the accompanying drawing by FIG. 1 in a front view and by FIG. 2 in vertical section along line AB in FIG. Figures 3 to 7 illustrate the operation of the machine.

The latter rests by means of four cross members

/ and g interconnected posts abcd on feet e. A rack h is guided between each two posts α b and cd , into which drives i engage, which are driven by the gears k fixed on shaft I. A wheel m with a crank handle η is firmly seated on one end of the shaft /.

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The two racks hh carry the stamp o, with which they are connected by the bolt ρ ρ in such a way that the connection can be released.

A slider q, which is also guided with its two ends between the interconnected posts α b and cd and is provided with two toothed racks r r, is raised or lowered by drives s which engage in the latter and are fixed on a shaft t provided with wheel u. A ratchet wheel ν with two pawls w sits on the same shaft t.

Four eyes χ are cast onto the slider q. In each of which is guided on a spring wedge J-- a spindle which is adjustable by a threaded nut provided with handwheel \ provided at its upper end with a jaw ^l and which serve to retain the leather.

On each side of the punch 0 and at a variable distance therefrom, there is a wall b ¹ supported by arms d ^l . The distance between these walls b ^ b ¹ from the punch 0 can be changed by the handwheels c ¹ , each of which moves a spindle connected to a wall b ^l.

Each W ^T and b ¹ with handwheel c ¹ and arms d ¹ is rotatably arranged around bolts e ¹ and can be folded down to one side. However, each spindle has so much play in the nut thread of the associated handwheel that the walls b ^l -b ^{x can} always lay flat against the leather to be milled for all leather thicknesses.

The weight of the slider q and the parts attached to it is balanced by a counterweight f ^1.

The height of the upper walls g 1 -g ¹ cannot be adjusted, but they can be evenly approximated to the longitudinal axis of the machine or evenly removed from it by means of the screws ti ¹ h ¹ , each of which is provided with right and left-hand threads is and fits into the corresponding nut thread of the walls g ^l.

Cranks P are firmly seated on the screws h ^{1 and} are connected to one another by a rod k ^l , so that when one crank is turned, the other is also turned.

The leather is processed in the machine as follows:

The leather x ^{1 is placed} on the upper edges of the walls g ^l -g ^l and, by turning the wheel it and lowering the weight f ^l, the sliding piece q is raised so that the upper edges of the walls b ^ -b ^l the lower ends of the Walls g ^x -g ^l touch (Fig. 3), after which the slider q is determined by inserting the pawls w in the teeth of the ratchet wheel ν . By operating the handwheel in , the punch 0 is then lowered through the intermediary of the gears ik and the rack h , which takes the leather x ¹ , which is consequently folded, with it, pushes it through the space between the walls g ^l -g ^l and finally between the walls b ^x -tf brings. The punch ο must be lowered so deep that the leather x ¹ folded around its lower edge touches the surface of the slider q (Fig. 4). After this has happened, the ratchet wheel ν is released by lifting the pawls w and the slider q is brought into its lowest position by turning the handwheel u (FIG. 5), which movement is followed by the punch 0 by its own weight. In this lowest position, the slider q is held by inserting the pawls n> in the ratchet wheel ν .

The free hanging part of the leather x ¹ that has remained unformed up to now can now be knocked over the upper edge of the stamp 0 (FIG. 5). Once this is done, the free leather end is gripped with the clamping ^jaws α Ύ and tightened over the punch ο by screwing down the spindle y by means of the handwheels, as can also be seen from FIG. The punch 0 is then - after the leather x ^{1 has been} stretched sufficiently, released from its racks h by loosening the latch ρ . The slider q with the stamp 0 located between its walls b ^l -b ^l and enclosed by the leather x ¹ is then lifted after releasing the ratchet wheel ν by turning the wheel u until the upper edges of the walls b ^x -b ^l the lower edges of those g Touch ¹ -g ^1. The upper part of the stamp 0 ^{with the leather x 1} covering it has been brought between the lower part of the walls g ^l -g ^} (FIG. 6). The slider q is in turn determined by inserting the pawls w into the teeth of the ratchet wheel ν , so that it must remain in the position. Then the racks h are raised by turning the wheel m so far that a second punch he (Fig. 6) can be attached to them above the walls g ^ -g ^{1 by means of the bolt ρ.} A second leather x ' ^{1 is} brought under the stamp o ² , which is pushed through the space between the walls g ¹ -g ^l in the same way as the first (FIG. 7). Then the slider q , which has been raised up to that point, is lowered and, after the wall b ¹ attached to the arms d ^[is folded down, the stamp 0 with leather x ^{1 is} removed, whereupon the folded wall b ^{x is} returned to its previous position so that the stamp o ' ² leather x ² brought between the walls g ^l -g ^x can be further processed in the same way as previously described.

Claims (3)

Patent Claims: 1. A machine for fulling upper leather, in which the leather is forced between upper and lower walls by a movable forming die and the lower walls are arranged on an upright movable slide, characterized in that the forming die (0) between the plate pairs (b ^l -b ^l and g ^] -g ^l j can be moved in such a way that with a single insertion of the upper leather into the machine, the front sheet and the back sheet can be milled one after the other. 2. A machine according to claim 1, characterized in that on which the lower plates (b ^l -b ^l ) supporting slider (q) pliers (α} -α ^λ ) are arranged for gripping and stretching the leather before the fulling second sheet. 3. A machine according to claim 1, characterized in that the lower plates (b ^l -b ^l ) respectively. one of the same are arranged to be foldable, for the purpose of being able to remove the forming die together with the milled upper leather. For this purpose 2 sheets of drawings.