US1732954A

US1732954A - Boman sttda

Info

Publication number: US1732954A
Authority: US
Publication date: 1929-10-22
Anticipated expiration: 1946-10-22

Description

Oct. 22, 1929. R. suDA PAPER PUNCHING DEVICE Filed Aug. 1. 1928 I ffm/zim- Zhang/5%.

Patented Oct. 22, 1929` UNITED STATES ROMAN SUDA, OF KATOWICE, ?OLA1\TD IPAPER-PUNCHING DEVICE Application filed August 1, 1928, Serial No.

rl`his invention relates to a device of the kind used in conjunction with paper files for punching holes in the documents and wherein means are provided for automatically applying an adhesive reinforcement strip or strips to the punched paper portion.

rJfhe invention consists in the provision of a die plate which is supported on a doublearmed lever so as to be normally below the lo level at which the reinforcement strip is advanced and so as to be raised by the lever for severing the strip and pressing it together with the paper against a stripping plate before the punching takes place.

Fig. l of the accompanying drawings represents a sectional side view of the device,

Fig. 2, a section of the same at right angles to Fig. 1 taken in alignment with the punches,

F ig. 3, a horizontal section on the line 3 3 of Fig. 1,

Fig. 4, a part section on the line 4-4 of Fig. 5 of a modified arrangement, and

F ig. 5, a top view of this arrangement.

The punching tool comprises a easing 3 which is surmounted by a rigid frame 1. On a shaft in the latter a rocking frame 2 is mounted whereby two spring-supported punches 4 can be depressed. l'nside the casing there is a die plate 16 which is supported by means of links 17 on the ends of double-armed levers 18, the plate being normally maintained by springs 19 in the lowered position shown in Fig. 1. Two racks 9, which are pivoted to the frame 2, bear against the levers 18 and turn them when the frame 2 is operated so as to raise the die plate 16 to the level of the casing top before the punches perform their work.

The casing also contains a roller 7 which supplies a gummed reinforcement strip and which is geared by means of pinions 8 to the racks 9. Another pinion 10, which meshes with the opposite edge of the rack 9, moves a press roller 11 which communicates rotation,

by means of gear wheels 12 and 14, to a moistening roller 13 which is swept by a moistening pad 15. The reinforcement strip is fed from the roller 7 between the rollers 11 and 13 which project the strip over the 296,828, and in Germany August 10, 1927.

die plate 16 when the racks are depressed by means of the frame 2. rlhe plate 16 carries a cutter 20 whereby the projecting portion of the strip is severed olf just before the plate reaches its end position. A. stripping plate 5 through which the punches pass, is engaged by cross-pins 6 on the punches so as to follow the latter and serve as an abutment against which the reinforcement strip and the paper can be clamped by the die plate.

A free-wheel mechanism is employed which allows the rack., to return to the position of rest without affecting the feed rollers and the reinforcement strip.

ll`l1e paper to be punched is placed on top 05 of the casing 3 under the stripping plate 5. Vlhen the frame 2 is operated the rollers are first rotated so as to advance the reinforcement strip the gummed side of which is moistened by the roller 13. The die plate I0 1G, which is at the same time raised by the racks, severs the projecting strip portion and presses it together with the paper against the stripping plate 5 so as to fasten the reinfercement strip to the paper. In the fur 75 ther movement of the frame 2, the punches will be engaged by the same so as to make punchholes in the reinforced portion of the paper. The die plate 1G is arranged so as to be on a level with the top of the casing So 3 w ien it meets the stripping plate.

ln the arrangement just described the reinforcement strip extends from one punch hole to the other. It will be sutlicient for the reinforcen'ient to cover only the immediate 85 neighbourhood of the punch holes, and two narrow strips supplied by short rollers 21, can therefore be used, as shown in Figs. 4 and 5. ln this case only one rack and one set of pinions will be required, these being arranged midway between the two sets of rollers.

Means may be provided for disengaging the pinions from the rack 9 when it is desired to punch holes without using the reinforcement strip. For this purpose the pinions are slidably but not rotatably arranged on the shafts and formed with circumferential grooves for engagement with forks 24, the latter being connected to a rod 25 whereby 100 the pinions can thus be slid into and out of engagement with the rack.

The actual construction of the device may be varied Within the scope of the invention.

I claim:

1. A paper punching device comprising a supporting trarne, an operating frame pivoted to said supporting frame, a pair of spring-supported punches in said supporting frame arranged so as to be engaged and depressed by the operating frame in the lower position of the latter, a die plate arranged under the punches, a double-armed lever supporting said plate, racks pivoted to the operating frame and bearing against said lever so as to raise the plate when the operating frame is depressed, means operated byhsaid racks for feeding an adhesive reinforcement strip across the die plate, a

dcutter arranged on the die plate so as to sever the strip just before the plate reaches its end position and betere tbe punches are operated, and a stripping plate controlled by the punches and arranged as a eountermupport for the die plate.

2. The structure claimed in claim l in combination with a paper support arranged so as to be on a level With the die plate when the latter meets the stripping plate.

ROMAN SUDL