US1189093A

US1189093A - Rotatory perforating device.

Info

Publication number: US1189093A
Authority: US
Inventors: Rudolf Gompf
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-09-08
Filing date: 1913-09-02
Publication date: 1916-06-27
Anticipated expiration: 1933-06-27
Also published as: GB191320261A

Description

R. GOMPF.

ROTATORY PERFORf-,TNG DEVI-CE. APPLICATION man SEPT.2.1913.

l ,l 89,993 Patented Jupe 27, 1916.

Y gles RUDOLF GOMPF, OF BERLIN, GERMANY.

ROTATORY PERFOBATING DEVICE.

' Specification of Letters Patent. Patented June 27, 1916,l

Application led September 2, 1913. Serial No. 787,726.

To all whom it may concern Be it known that I, RUDOLF GOMPF, a subject of the Emperor of Germany, and Aresident of 27 Elisabethstrasse, Berlin, Germany, have invented new and useful Improvements in Rotatory Perforating Devices, of which the following is a specication.

rlhis invention relates to a device for providing a continuous length of paper or fabric, or, it may be2 a single sheet of paper or strip of fabric with continuous or intermittent perforations of circular or other form, the arrangement being such that the band of steel or other suitable metal which contains the matrices can be caused to lie against a shorter or longer portion of the periphery of the annular drum which carries the punches, and while in this position to perforate thel roll of paper or the single sheet passing between the band and the drum, this being effected by mechanically forcing the punches. out of the annular drum and causing them to pass into the matrices. This arrangement insures that the punches enter into the matrices in a direction absolutely at right anto them, this being an essential condi- A tion for effecting satisfactory perforation,

the punches being moreover able again to pass to the rear of the periphery of the drum carrying thembefore reaching the point at which the band carrying the matrices ceases to be in contact with the periphery-of the drum.

A device iii accordance with the invention is illustrate in the accompanying drawings in whic Figure 1 shows rangement of the punch drum and of the matrix band with aroll of paper passing'between them, Fig. 2 shows, partly in section, the arrangement of the punches or punchpins with the mechanism for actuating them in one direction with the matrix band lying against them, Fig. 3 shows on an enlarged scale a section through a portion of the matrix band, Fig. 4 shows in plan, thearra-ngement of Fig. 1, the upper portion of the matrix band being cut away to the right and left.

The essential parts of a perforatng device in accordance with this invention are the annular drum 2 which contains the punches 1 and the endless steel band 3, in which the matrices 4 are stamped: The length of the matrix band may vary, it howdiagrammatically one arever will be best for the satisfactory operation ofthe/device that the band should be of the exact length of the external periphery of the drum, as in this case during each revolution of the device the punches will always enter into the same matrices, as during the preceding revolution. The endless steel band 3 passes over the rollers 5 and 6 which are so arranged in relation to the annular drum that a portion of the steel band 3 is caused to lie on the periphery of the drum 2. The rotary' movement of the shaft 7 of the drum 2 is transmitted through the toothed wheel gear, 8, 9, 10 and 11 to the shaft 12 of the roller 6, the steel band 3 being thus caused to rotate at exactly the same peripheral speed as the disk 2. Experience has shown that during the forward movement of the steel band,l on account of the friction between it and the surfaces of the rollers 5 and 6 by which it is tightened, the matrices 4 are apt to become displaced in relation to the punches 1, while moreover, when there is any tendency toward such displacement, it may occur that the punches 1 which have passed into the matrices 4 may press in the direction of movement against the ywalls of the matrices, and thus gradually extend them, and to obviate this, there are inserted in the roller 6 rigid pins 13 which engage with apertures 14 arranged at intervals in the steel band to positively guide said band and thus assure the entry of the punches into the matrices.

Fig. 2 illustrates in section one of the `many possible arrangements of the punches 1, with the annular drum 2 and the mechanism for moving them forward. Tcprevent the Ydrawing from becoming obscure, the punches are show-n arranged at comparatively large intervals, and it is has been asv sumed that circular perforations are to be produced. The circular pins 1 are each provided in the usual manner-With a tapered band and are pushed in pairs into flat plates 15. The front part is guided in the apertures 16 of the annular drum 2, the distance between these Yapertures as already stated, accurately corresponding with the intervals between the 'matrices 4. `The plates 15 together with the pins 1 are caused by the action of the springs 17 to b'earagainst the sliding jaws 18, which are attached to the side of the annular drum 2in such manner that they can be displaced in the slots 19 in an exactly radial direction from the center of the shaft 7 toward the periphery of the annular drum. In the construction shown in the drawings this is effected by means of the roller 2O mounted on the arm 21 attached to any suitable point outside the plane of the annular drum2 and the path of the paper or fabric.

The operation of the device is as follows: When in position 1 the sliding jaw' 18 is by the action of the springs 17 pressed against the screws 23 in the "direction of the center of the axis, so that the pins 1 will not project beyond the periphery of the annular drum 2. During the continued rotation of the drum the jaw 18 comesinto position II upon the roller 20 and by the compression of the springs 17 is pushed toward the periphery of the drum 2 with the result that the pins 1 will now project beyond the periphery exactly opposite to them, by which means the roll of paper or l' fabric passing between the drum 2 and the steel band 3 is perforated in an absolutely perpendicular direction. During further rotation intoposition III, the sliding jaws 18 after ceasing to be in contact with the roller 20 again assumes its initial position, that is to say the pins are again with-drawn within the perpher of the annular drum 2. The entrance o the pins 1 into the matrices 4 is consequently eected at a point at which the band 3 fits closely against the curvature of the disk 2. This operation is repeated without interruption in the case of all the succeeding groups of pins, with the result that the roll of vpaper `and fabric is perforated in one continuous operation. As when the pins 1 penetrate Ainto the roll of paper or fabric there is produced a certain amount of stress which might possibly be transmitted to the steel band there is provided above this band a thrust-bearing roller 23 (Fig. 1) which bears slightly against it and in which there is formed a groove 24 (Fig. 4) to facilitate the free passage of the projecting pins 1.

Having now described the nature of my invention what I claim is:

1. In a perforating device of the class specified, the combination of a rotary annular punch drum 4having peripheral perforations and a plurality of spring-actuated slides carrying groups of punches movable through the periphery of the drum, an endless matrix band rotating with the said drum and having apertures to register with the said punches, and means consecutively engaged by the .slides to projectthe grou s of punches throu h the periphery of the rum.

2. In a pe orating device of they class specified, the combination of a rotary annular punch drum having openings in the periphery thereof and provided with groups of punc es radially movable through the said openings, an endless matrix band r0- tating with the drum and having apertures to register with the punches, and means engaged by the consecutive groups of punches during the rotation of the drum to project said punch groups through the openings of the drum and into the apertures of the matrix band.

3. In a perforating device of the class specified, the combination of a rotary annular punch drum having distinct groups of spring-actuated punches disposed near the periphery of the drum, the groups of punches being movable through the drum periphery, an endless matrix hand engaging the drum and having apertures to register with the groups of punches, means for driving the matrix band to rotate the same at exactly the same peripheral speed as the annular drum, and means for consecutively actuating the groups of punches to project them through the periphery of the drum, the groups of punches being automatically returned to their normal position after disengagement from the said latter means.

4. In a perforating device of the class specied, the combination of a rotary annular drum having peripheral openings, independently operating slides each carrying a group of punches, the said slides being radially disposed within the circumference of the drum and provided with springs for returning the same to normal position and also with means to limit the outward radial movement thereof and of the punches, an endless rotating matrix band having a portion thereofmaintained in contact with the periphery of the drum and provided with apertures for registration with the groups of punches, and means for consecutively engaging the slides and projecting the groups of punches through the periphery of the drum into the portion of the matrix band in contact with the drum.

In witness whereof I have hereunto set my hand in the presence of two witnesses. RUDOLF GOMPF.

Witnesses:

WOLDEMAR HAUPT, HARRY L. WnsoN.