US2012472A - Stamping device - Google Patents

Description

Aug.. 27, 1935,

C. LUDEWIGS STAMPING DEVICE Filed June 26, 1955 2 Sheets-Sheet l MEAN Aug., 279 '113, QLUDEWIGS STAMPING DEVICE Filed June 26, 1955 2 Sheets-Sheet 2 ffl-'y Patented Aug. 27, 1935 stares atrapa STABIRNG DEVICE Carl Ludewigs, Hamburg, Germany, assigner to Luka Handelsgesellschaft Lndewigs &

Kahlcke, Hamburg, Germany, an association of Germany Y Application .lune 26, 1933, Serial No. 677,72

In Germany March 22, 1933 5 Claims.

This invention relates to a stamping device.

Stamping devices, particularly for marking and cancelling tickets, are known which have a stamp carrier provided at its lower end with a printing stamp and held in a guide by spring action. Moreover such stamping devices have already been arranged in such manner that the shaft of the stamp serves for receiving the supply of ink. During the depression of the shaft cf the stamp an inking roller mounted on a pivoted carrier bears against the surface of the ink reser- Voir and said roller is urged against the surface of the ink reservoir which is arranged in the shaft of the stamp and said roller is impregnated with ink; on the return motion of the shaft of the stamp and of the inking roller the latter inks the stamp.

Such stamping devices are suitable not only forv marking and cancelling tickets but could also be used as other stamps of any desired size.

However it has been found that the ink if sup-v plied through the shaft of larger stamps will not be evenly distributed over the latter, so that perfectly uniform impressions cannot be obtained.

According to the invention, this drawback can be overcome by mounting the stamp on an ink reservoir consisting of a box which is open on one side and lled with absorbent material, such as cotton. The open si-de of the box is closed by a perforated plate over which a tubular wick is is drawn. Being lled into the reservoir by a pipe, the ink is taken up by the absorbent Inaterial which transmits it to a wick whence it is supplied by a roller to the stamp which is thus inked.

It has further been found advisable to attach the inking roller tensioned by spiral springs and secured to two arms by means of the latter to two pivotal levers also subjected to spring tension. When the outer sheath is moved into the inner sheath, these levers are carried along and the inking roller is passed over the wick preparatory to re-inking the stamp during the return movement. Owing to this arrangement, the path to be travelled by the inking roller is much shorter than it would be if the roller were secured to the inner wall of the casing by its arms, and the casing can thus be made correspondingly shorter and handier.

A particular advantage of the arrangement resides, moreover, in that it could be adapted in a simple way for a number of interchangeable stamps, so that a single device could be employed (Cl. 10i- 327) with a number of stamps without having to screw the stamps in and out for securing the same.

This simple interchangeability of the stamps could be obtained in'lvarious ways.

For example, each stamp is secured on a block 5 of rectangular cross section.` This block fits in a resilient sleeve open below and on the side and carried on the ink reservoir. In addition, a pin is provided at the closed end of the sleeve and a corresponding 'hole is provided in the block. 10 By using such stamp carrying blocks the stamps could be rapidly and simply interchanged.

Further, the various stamps could be secured one on each surface of a multi-faced block of triangular, rectangular or like cross section 15 which is rotatably mounted in bearings carried on the ink reservoir and can be rotated about its axis by means of a knob or the like, the block being retained in the correct position at any time by means of a leaf spring, for example. 20

According to a further embodiment, the various stamps are secured in known manner on endless rubber bands which run on a rotatable roller and over a fixed roller and can be moved by means of discs provided on the rotatable roll- 25 er. This arrangement could be carried out in known manner in subdivision as a date stamp, for example.

By way of example, three embodiments of the invention are illustrated in the accompanying 30 drawings, in which Figure 1 is a front view, partly in section; Figs. 2 and 3 are sectional side views of the device provided with an interchangeable block carrying the stamp; Fig 4 is a side view, partly in section, of a device in which the stamps 35 are disposed on the faces of a triangular rotatable block; Fig. 5 is a side view, partly in section, of a device provided with stamps secured on endless rubber bands; Fig. 6 is a top view of the ink reservoir; and Fig. 7 shows, partly in section, 40

how the inking roller is secured.

Referring to the drawings, the ink reservoir E is secured by screws to a side wall of the Outer sheath i and provided with the lling tube 3 which is closed by a screw. The ink reservoir 2 45 filled with cotton or the like and carries on one side 'the perforated plate l over which the inking wick 5 is drawn which inks the inking roller 6 subjected to the action of helical springs when the inner sheath 8 is forced inside the outer 50 sheath l against the action of the helical spring 9 whereby the free end of the ink reservoir approaches the opening i in the inner sheath 3. The inking roller 6 is held in position by the arms lll which are articulated to the levers I8 ten- 55 sioned by the springs 23, and the levers i8 are driven by the shoulders 25 of the inner sheath 8 when the latter is forced into the outer sheath l. The interchangeable stamps are arranged on, over or adjacent the free end of the ink reservoir 2. When the sheath 8 is pushed into the sheath i, the knob 26 secured to a iiat spring will engage the hole 2l and thus hold the sheaths in position.

'in the embodiment according to Figs. 1 and 2 the spring sheath l i which is open at the bottom and on the side and provided atits closed end with the pin l2 is secured to the ink reservoir 2. The block i3 carrying the stamp and provided at its underside with a recess corresponding to the pin i2 is inserted in this sheath il.

in the embodiment shown in Fig. i the bearings i5 are provided on the ink reservoir 2 and serve as support for the rotatably mounted block I6 which is triangular, for example, and on the surfaces of which three different stamps can be Lfixed.V The block it is held in a predetermined position by means of the leaf spring i?.

p 4In Fig. 5, the stamps secured on endless rubber bands it? are disposed adjacent the ink reservoir 2. Theruboer bands iii run over the upper shaft ,28 which can be rotated by means of the rollers 2 l land over the lower shaft 212. Since there little space available, the ink reservoirl 2 has preferably a Slot 2li through which the ink may DaSS vt the wick 5 and saturate the latter. AFor .the @aime reason, the arms l@ which hold the l oller 6 lareresliently secured directly to the -er Wall of the sheath 3.

OnV displacing thedinner sheath into the outer sheath i the stamp pushesto one side the inking roller which is subjected to the action of the spring 1,. During further displacement of the Sheath 8 the inking roller .i5 engages the wick 5,

plate for closing the open side of said box, an inking Wick covering the said plate, an inking roller, two resiliently held arms for carrying said inking roller, and two spring-actuated levers articulated to said arms.

2. In a stamping device an ink reservoir consisting of a box lled with absorbent material, said box being open on one side, a perforated plate for closing the open side of said box, an inking Wick covering the said plate, a replaceable block carrying the stamp and being recessed, a suitably supported inking roller, a resilient sleeve secured to the ink reservoir for receiving said block, and a pin in said sleeve for engaging the recess in said block.

3. In a stamping device an ink reservoir consisting of a box filled with absorbent material,

said box being open on one side, a perforated plate for closing the open side of the said box, an inking Wick covering the said plate, a suitably supported inlring roller, a plurality of bearings carried on the inking reservoir, va polygonal block rotatably mounted in said bearings, and a plurality of stamps carried by said block.

4. 1n a stamping'device, a plurality of endless rubber bands, shafts from which the endless rubber bands are movable, stamps secured to said bands, an apertured ink reservoir adjacent to the stamps, a Wick supplied with ink through the aperture of the reservoir, and a suitably mounted ink roller supplied With ink from said Wick and operative to ink the stamps.

5. A stamping device comprising an ink reservoir consisting of a box filled with absorbent material, saidbox being open on one side, an apertured plate for closing the open side of said box, an inking wick covering the said plate, stamping means in operative relation to the reservoir, an inking roller, means for mounting the inking roller for movement with relation to the stamp- .n

ing means and the reservoir whereby the inking roller is supplied with ink by said roller for inking the stamping means.

CARL LUDEWIGS.

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