DE104134C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 52: Sewing machines.

HENRY HILL in NOTTINGHAM (England).

Heilmann embroidery machines.

Patented in the German Empire on June 25, 1897.

The present invention forms a jacquard device of that type protected by D. R. P. No. 91184 Kind, insofar as here also the inevitable back and forth movement, of which the more or less great displacement of the frame is always used in its entirety. Also here are on a movable system (for every type of movement: horizontal and verticale), which with the frame through a rack and pinion gearbox and a screw (as in D. R. P. No. 23450 or 91381) or equivalent means is connected, circuit boards are attached, of which the one selected by the associated control jacquard board takes up the larger or smaller stroke of the necessarily swinging knife. but while according to D. R. P. No. 91184 for each sinker group a "single knife with different is arranged far from the point of oscillation, there is a special knife for each board with only a pin and the knives are shared by eccentrics with different strokes Wave moves. Although this increases the number of gear parts, one arrives at a simpler, more compact one , clearer design, as a comparison of the drawings shows; one avoids in particular the various curvatures of the pins of the only one Knife in D. R. P. No. 91184 and made easier by eliminating the the assembly and adjustment of the machine.

In addition, the required accuracy, ie the strict proportionality of the many different path lengths, is easier to achieve by the eccentric and the knives of exactly the same length than with the older device. Above all, however, a very important difference should be mentioned for the mode of operation: The frame-shaped knife G ² G in DRP No. 91184 always vibrates at the same speed, and so all movements of the frame, regardless of whether they are large or small, must be in the same Time, consequently to be executed at different speeds. Here, on the other hand, where there is a special knife for each plate and each knife is moved by a special eccentric, one has the possibility of having the frame carry out all shifts at the same speed, simply by taking into account the shaping of the eccentric Place small excavations in a small, larger one in a correspondingly larger centri-angle. This possibility is of great importance because the frame speed has a considerable influence on the pulling-off of the threads and the tension of the thread increases much more easily at the same frame speed. rules and always remains the same.

Claims (1)

Here only the device for measuring the magnitude of motion in the relevant horizontal or vertical type of motion comes into question; the device specified in DRP No. 91184, claim 2, or a similar device may serve to select the direction of movement in the relevant type of movement (whether to the right or left, up or down). Shows on the accompanying drawing
Fig. Ι the transmission in side view,
2 shows the same in a head view with the omission of certain parts which would impair the clarity. The rods AA, which can be moved in a transverse bar of the frame cheeks FF , engage indirectly (e.g. in the manner of the corresponding rods in DRP No. 91381) on the embroidery frame (not shown); one bar mediates horizontal movement, the other vertical movement. On the end of the rods AA facing the registered gearbox, there are cross pieces B B. The plates CC are hinged to the joint pieces JB ¹ screwed with BB. They have the same distance from B ¹ arranged upwardly directed hooks C. ¹ The jacquard control sinkers D , which are guided in perforated transverse webs EE ^{1 of} the frame and are connected in a known manner to the needles of a jacquard machine, engage the sinkers CC. A knife G belongs to each plate C , all knives can be rotated in two groups on a common axis fixed in HH ¹ and all have a laterally protruding pin G \ at the free end which, when the knife oscillates to the right (Fig. 1) Hook C ¹ engages the board in question in the event that the latter has been lifted by the control board. On the other hand, the pin on the corresponding knife passes freely over the hook of the plate that has not been lifted. Opposite the groups of knives are groups of eccentrics JJ , which are stuck on a common shaft I ^{that can be rotated in / 1} J ¹ . According to the drawing, they are of different sizes and accordingly have different stroke. Shaft / is driven accordingly by the main shaft of the embroidery machine. The knives rest against the eccentric surfaces with noses G ² and are constantly pressed against them by springs or other appropriate means. The stroke of the eccentric 1 corresponds to the unit of the frame displacement, the stroke of 2 is double, that of 6 is six times as large and so on , shifted two or six units, namely by the fact that the pin G ^{1 of} the relevant knife grips into the hook C ^{1 of} the relevant plate and pulls it with it when it oscillates to the right, thus also crosspiece B and rod A. Pa τ en τ-An s ρ ruch: A ¹ controlled by a Jacquard machine gear for moving the frame of Heilmann embroidery machines, characterized in that by a series of eccentrics (J) different strokes on a common shaft (I) as many knives (GG ¹ ) on a common axis (H) in compulsory pendulum movement with a different deflection for each knife, by means of which corresponding plates (CC ¹ ) which convey the frame movement are displaced to different extents. 1 sheet of drawings.