US 2446010 A
Description (OCR text may contain errors)
July 27, 1948. J, 5, JAHN 2,446,010
MACHINE FOR TRANSFERRING A DESIGN TO A CLOTH MATERIAL Filed Sept. 15. 1938 Jnventor:
am gm Patented July 27, 1948 FFlCE.
MACHINE FOR TRAN SFERRING A DESIGN TO A CLOTH MATERIAL Jens Simoni Jahn, Copenhagen, Denmark, as-
signor to Aktieselskabet Brpdrene Hartmann, Kanalvej, Kongens Lyngby, Denmark Application September 13, 1938, Serial No. 229,651 In Denmark September 15, 1937 Section 3, Public Law 690, August s, 1946 Patent expires September 15, 1957 6 Claims.
In the manufactural production of clothing for men or women where several garments or parts of such garments of uniform shape and size are produced simultaneously, there is employed a form with a certain design for each size and shape, and this form is made of strong paper that is spread over the cloth material, whereupon a colour substance is applied either manually or by means of an aparatus that presses it through perforations in the paper for transferring the design to the material to be cut.
In the hitherto known methods and devices in this respect the material and the form are held together onto a base by means of suitable clamping means disposed along the outer edges, but it has been found that this manner of holding them is not satisfactory, owing to the fact that the material is liable to be displaced in relation to the form even within a short distance from the points of attachment. The result of this is that the transfer of the design has to be carried out most carefully if a correct result is desired.
The object of the present invention is to provide a method by means of which the speed of transferring the design may be considerably increased, because the form and the material are both held securely in relation to each other. This is according to the invention obtained by placing the material and the form upon a base that is perforated, and beneath which there is produced a vacuum which partly serves to hold the material and the form rigidly together against the base, and partly that the coloursubstance is sucked from a container moved over the surface of the form through the perforations in the latter into the material. By this method no displacement of the material in relation to the form will be possible, and the transfer of the colour substance will take place in a uniform and satisfactory manner. Likewise the speedof transferring the design to the material will be considerably increased in relation to the hitherto known methods.
In the accompanying drawing there is shown one manner of construction of a machine by means of which the method described may be carried out, and in which Fig. 1 is a side elevation of the machine,
Fig. 2 an end elevation of same seen from the left end of Fig. 1,
Fig. 3 a partial top elevation of the machine table,
Fig. 4 a vertical section through the machine table shown in Fig. 3, and
Fig. 5 a detail of the colour containers in vertical section.
With reference to the drawing I indicates a machine table supported by legs 2. The table top is hollow, and the hollow space is connected to a vacuum pump by means of a nozzle 3. The upper surface of the table I is perforated, and the perforations are so small and arranged so closely together that a comparatively slight rarefying of the air beneath the table top will be suflicient to suck the material and the form disposed thereon tightly to the table top. Usually there are employed cloth materials of various widths and forms of corresponding widths, for which reason the width of the table should be adjusted to the greatest width to be employed. When narrow widths of material are to be used, the form must cover the entire width of the table top, as otherwise too much air will be sucked through the holes outside the form, and the suction effect would be too slight. The part of the form including the perforated design extends, however, only over such a, portion of the width of the form paper that corresponds to the width of the material.
On each side of the table there is attached by means of screws an angle iron track rail 4 pro vided with a stop 5 at each end. These rails 4 carry a slide comprising two side pieces 6 in which two wheels 1 are journalled. The slide is provided with a shaft 8 for an externally disposed pulley or sprocket 9 for a belt or chain ID, that is carried over a pulley or sprocket II on a shaft 12 journalled in the walls 6 and carrying between these walls a rigidly attached spring disposed within a, housing l3 shown in Fig. 2.
The shaft 8 is so arranged that it may be extracted from its bearings so that a roll I4 on which there is wound a form l5 may be placed thereon. When the form r011 I4 is to be applied, the slide is displaced to the right in Fig. 1, and the free end of the form is attached to the table top, for instance by being pressed on to pins 16, or by being clamped in the manner illustrated in Figs. 3 and 4. After the roll with the form wound thereon has been placed in position on the shaft 8, the slide is moved to the left, and the form is thereby unwound from the roll on to the table top during rotation of the roll. This rotation of the roll is transferred to the spring within the housing l3, which is tightened so that the form is wound on to the roll when the slide is again moved to the right.
The form must be subjected to a pressure against the table top and to the material thereon to allow its being sucked down. This is not possible by causing the roll ll to'rest against the table top, because the circumference of the wound roll diminishes as the winding-oil takes place. According to the invention there is placed in front of the roll H a pressure roll I! that presses the form firmly against the material on the table.
Just behind the pressure roller I! there is disposed a colour container i8 from which colour substance is sucked by means of the vacuum beneath the table top through the perforations into the material. I
The said pressure roller i'l may be coated with some soft material, for instance felt, which partly wipes the colour from the upper side of the form and partly presses it through the perforations to allow for an improved suction of the colour into the material.
In order to provide for a more effective vacuum the hollow space within the table may be divided into several independent compartments which .one by one are automatically connected to the vacuum pump as the slide travels over the table. This effect may be obtained in several manners, for instance by means of valves that are controlled by a lug on a movable part of the machine, as shown in Fig. 1, where [9 indicates the end of a pressure arm that actuates a valve when the wheels I pass over it. When the front wheel actuates the pressure arm the valve is opened, but it is again closed when the other wheel actuates it.
In a practical manner of construction the pressure rollers, the colour containers, etc. are automatically raised from the table top when the slide is moved to the right in Fig. 1.
It will often be desirable to transfer a design having a longer length than normal by the form employed. This can be done by first transferring the greater part of the normal design to the material and then moving the entire form a distance corresponding to the desired extension and thereupon completing the transfer of the design.
In Figs. 3 and 4 there is illustrated a machine adapted to this purpose. The end of the perforated table is indicated by 20. In each of the rails corresponding to the track rails 4 in Fig. 1 there is formed a slot' 2| engaging a wedge 22 carrying a table 23, which on its lower side carries a rack 24 that engages the teeth of a toothed wheel actuated to rotation by means of a hand wheel. By these means the table 23 may be displaced closer to or farther from the table I. The table 23 is provided with two upright plates 21 each having a groove 28 for a pin 29 on the end of a heavy block 30 which in the-position shown clamps the form to the table 23. To allow the proper positioning of the form the table 23 is provided with a guide 3|, and the table I has another guide 32 for the adjustment of the cloth material. The one track rail 4 is provided with a scale 33 by means of which the adjustment of the desired design length may be controlled. The block 30 is provided with a handle 34.
In most cases there is employed a white colour substance in the form of a powder, but it is often desirable to employ another colour. For this purpose there may be arranged as shown in Fig. between two discs 36 rotatably mounted on pins 35 a number of containers 18 for different colour substances. These containers may each comprise a box having a gauze bottom. By rotating the discs 38, the container with the colour substance of the desired colour may be turned to the position indicated in Fig. 5 by Ila.
Finally it is to be remarked that the above described device may be employed in connection with forms cut to any desired'shape instead of being perforated. The forms are placed upon the cloth material, and over them there is placed a piece of gauze or similar porous material. Upon moving the colour container over the forms, the vacuum will suck the colour through the spaces separating the forms from each other, and the design will thus appear black against otherwise coloured material. It has been found that owing to the comparatively strong vacuum along the edges of the forms there appears sharply defined contour lines.
What I claim is:
1. The combination in a machine for stencilling a fabric, of a table with perforated top, means for producing a vacuum on the lower side of the table, rails attached to two opposing sides of the table, a carrier mounted for displacement along the rails over the table top, a drum rotatably mounted within the carrier, a pliable stencil attached by its one end to the drum, means for afllxing the other end of the stencil detachably to the table top, means for rotating the drum in conformity with the displacement in one direction of the carrier to unwind the stencil from the drum, spring means for rewinding the'stencil on the drum during the return movement of the carrier, and means for applying a colour substance to the stencil during its unwinding.
2. The combination in a machine for stencilling a fabric, of a table with a perforated top plate, a vacuum chamber formed on the lower side of the said top plate, means for connecting this chamber with a suitable suction device, rails attached to two opposing sides of the table. a carrier disposed for displacement along the rails over the table top, walls formed at each side of the carrier, bearings in the walls for a shaft, a stencil carrying drum arranged on the said shaft for rotation therewith, means for operating the drum and shaft to rotation during the displacement of the carrier, and means for distributing a colour substance over the stencil during the displacement of the carrier.
3. The combination in a machine for stenciling a fabric, of a table with a perforated top plate, means for producing a vacuum on the lower side of the said top plate, rails attached to two opposing sides of the table, a carrier mounted for displacement along the rails over the table top, walls formed at either side of the carrier, a shaft Journalled in bearings in the said walls, a drum mounted for rotation with the shaft, a pliable stencil attached by its one endto the shaft, means for attaching the other end of the stencil detachably to the table top, another shaft journalled in the carrier walls,- a coil spring attached by itsone end to the said shaft, a housing surrounding the spring and to which the other end of the spring is attached, a belt drive connecting the drum shaft and spring shaft together for winding the spring taut during the unwinding of the stencil, a pressure roller journalled in the carrier walls for pressing the stencil against the table top, and a colour substance container with perforated base disposed between the carrier slot, at table attached to the wedges, a rack formed on the lower side of the table, a shaft journalled in lugs attached to the rails, a toothed wheel ilxed to the said shaft for engaging the rack, a hand-wheel attached to the one end of the shaft outside the rail, 9, carrier mounted for displacement along the rails and their extensions over the tables, a drum rotatably mounted within the carrier, a pliable stencil attached by its one end to the drum, means for attaching the other end of the stencil to the table on the rail extensions, means for rotating the drum in conformity with the displacement of the carrier in one direction to unwind the stencil from the drum, spring means for winding the stencil on the drum during the return movement of the carrier, and means for applying a colour substance to the stencil during the movement of the carrier.
5. In a machine as claimed in claim 4, the arrangement on the table of two upright plates,
a groove formed in each plate, a heavy block,
means for guiding the block in the grooves for its vertical displacement between the table top and the upper part of the grooves.
6. The combination in a machin for stencilling a fabric, of a table with perforated top, means for producing a vacuum on the lower side of the table top, rails attached to two opposing sides of the table, a carrier mounted for displacement along the rails over the table top, upwardly extending walls on either side of the carrier, a drum rotatably journalled between the walls, a pliable stencil attached to the drum, means for attaching the free end of the stencil to the table top, means for rotating the drum in conformity with the displacement of the carrier in one direction, spring means for rotating the drum in the opposite direction upon the return movement of the carrier, a shaft journalled in the carrier walls, discs attached to the said shaft within the carrier walls, rods interposed between the discs. a colour substance container suspended rotatably on each rod, and means for rotating the shaft and discs upon the displacement of the carrier.
JENS SIMONI JAHN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 109,686 Thomas Nov. 29, 1870 913,274 Erler Feb. 23, 1909 1,786,347 Kennedy Dec.. 23, 1930 1,894,530 Bernardo Jan, 17, 1933,
I FOREIGN PATENTS Number Country Date 301,483 Germany Nov. 1, 1929