US2008509A - Device for punching and reenforcing documents or the like - Google Patents

Description

July 10, 1935. F. LORENZ 2,008,509

DEVICE FOR PUNCHING AND REENFORCING DOCUMENTS OR THE LIKE Filed March 29, 1954 Patented July 16,1935 i 7 2,008,509

DEV-ICE ron PUNOHING AND annnroaomo I q DOCUMENTS on THE LIKE I .Franz Lorenz, Dresden, Germany} .as signor to Waldes &. Ko., Dresden, Germany Application March 29, 1934, Serial No. 717,937

In Germany April '7, 1933 Claims. (o1. ea-1") The present invention relates to devices for might produce dimculties in unwinding the re punching and reenforcing documents or the like enforcing strips is prevented. in which on the downward movementoi the hand The invention is illustrated in the accompany- M lever the-reenforc'ing strips unwound from spools ing drawing in which i 5 or the like are fed forwards, out off, pressed onto Fig. 1 shows a punching and reenfor'cingde- 5 the paper and punched therewith. In such vice in side elevation in which th'e feeding mechpunching and reenforcing devices it has hitherto anism of the present invention is employed. been usual to feed the reenforcing strip by means Fig. 2 is a View. from the left of'Fig. 1.

of a rack bar mechanism connected with the Fiss.'3 to 5 show details to somewhat enlarged i=0 hand lever. This arrangement'was not onlyvery scale, while Figs. 6 and 7 show the reenforc'ing 1'0 inconvenient but did not operate satisfactorily. strip suitably employed in plan and in side eleva- As distinguished therefrom in accordance with tion respectively. a the invention the advance of the reenforcing strip Referring to the "drawing, on the base plate a is efiected by feeding fingers or thelike pivotally of the punching device are secured the two guide 1'5 mounted and inclined to the direction of moverods 5 on which the upper part b of the punch ment of the punches, the other ends of which ing device can be moved downwards against'the fingers co-operate with the reenforcing strip action of the helical springs e. The part -b of guided on a support. In this manner a feeding the device carries the two punches f and the U mechanism is provided which in itsmode oi shaped guide Chann s W their p Sides operation is very simple and permits uniform downward and located at a suitable distance feeding of the reenforcing strips, from one another, in which the reenfor'c'ing strips Suitably the support for the reenforcing strips 2) being unwound from the spools n. are guided, is formed as a guide channel having its open which strips are provided on th'eunclerside with side downwards, on the lower side of the vertically permanent adhesive. 5

movable upper part of the. punching apparatus, Adjadent ea of W id Channels m gthe feeding fingers formed as spring controlled is arranged a feed g fi ge i m d a aj v single armed levers being movably arranged on the p v S t/h a -m'0unted 0n the IOWBT the fixed base plate of the punching apparatus portionc of the punching device.- Adjacent each opposite the guide channel. of the levers i is arranged a spring coiled on the Moreover, there are suitably provided stops pivot .8 wh ch D sses at 0 6nd against a p I0 39 suitably adjustable with which the upper part of provided o the ow p 0 0f the punching the punching apparatus contacts whereby the vice and acting as an abutment and presses at the ends of the gripper fingers are moved away from other end on the lower side of the lever 1'. Conthe reenforcing strips and the feed of the reensequent-1y the levers i with their ends which are forcing strip interrupted. As a result the ad formed as feed pawls tend to press against the vance of the reenforcing strips is conveniently reeniorcing stripsp lying inthe channels m. Ad-

interrupted at a quite definite position of the iac n each of the guide h nn m is arr n ed advancing finger so that the length of the strip a spring I acting as a locking finger which with its fed forward is exactly determined. end y presses from beneath on the reenforcing 40 In order to prevent the reenforcing strip from im and therflby p n return movement of 40 slipping back especially in the return movement the enforcing strip 7 of the feeding fingers resilient locking fingers The opel'andl of the Punchmg and are rovided adjacent the guides for the reenenforcing device is follows: forcilzlg Strips. Ihe document laid on the base plate c and in- If reenforcing strips are employed the adhesive diCated-by the dotted line in 1 is pushed layer of which is not first brought into adhesive forward to the lower blade h secured to the base plate c. On depression of the hand level a the condition by warming or moistemng or the like, fl i. e. if the strips are provided with a so-called uppel pint of the punchmg device and wlth It the two guide channels in are moved vertically permanent adhesive layer, then the strlps are downwards The pointed ends the levers 50 provided Wlth raised or depressed portions as for then enter the r e forcjng Strips and push h example ead d channeled d s o the enforcing strips in the direction of the arrow inl produced y p g or the like, and breakdicated in Fig. 4. Shortly before the opposing ing up the smooth surfaces. As a result too great blades o on the part b of the punching device adhesion of the coiled reenforcing strips which meet blades hthe projectionslcprovided on levers 55 2' contact with the guide channels in the manner shown in Fig. 5. The pointed ends of the levers z 7 are thus moved downward from the reenforoing the punches f on the upper part b of the device,

By compressing the pads r the punches which cooperate with the holes w provided in the lower part c of the device ensure the perforation together of the reenforcing'stripsp and the document 2. g

, If the hand lever and thus the upper part b of the device is released and allowed to move up'.

wards again under the action of the springs c then the levers i move back under the action of thesprings q into the position shown in Figs. v1 and 4. ,The springs Z formed as locking fingers prevent any backward sliding movement of the reenforcing strips. In the embodiment above described the projections k: are made non-adjustable. They may,

however, be formed of adjusting screws or the like so that the length of the strips of reenforcing material to be cut off may be varied or the feed regulated.

If as in the present embodiment reenforcing strips are used which are provided with so-called permanent adhesive then it is preferable to provide the surfaces of the reenforcing strips with raised portions or depressions in order to prevent strong adhesion together of the coils of the wound strip which would cause disturbances in operation. For example the strips p as shown in Figs. 6 and 7 may be provided with beaded edges it. These beaded edges can be formed by stamping or'the like.

I claim:

,1. In a device for punching andireenforcing materials or the like, the combination with a base, turnable spools for 'reenforcing strips mounted thereon and a vertically and linearly movable punch carrying frame cooperating with said base, of. guide channels for said stripsar ranged on the bottom'of said frame, rigid feeding means movably and resiliently supported on said base and projecting upwardly in a forwardly inclined position into said channels to press against said reenforcing strips, so that when said frame is moved downwardly said feeding means will feed said strips from said spools, and means on said feeding means adapted to be acted upon by said frame when reaching the punching position so as to disengage the feeding means from said strips.

.2. In a device for punching and reenforcing materials, the combination with a base, turnable spools for reenforcing strips mounted thereon and a vertically linearly movable punch carrying frame is moved downwardly said gripping means will feed said strips from said spools, and means on said members adapted to be actedupon by said frame when reaching the punching position so as to disengage said gripping means from said strips.

3. in a device for punching and reenforcing materials as {16301313111 2, in which said channels are arranged in spaced relationship relative to one another, are U-shaped and adapted to engage frame while moving downwardly will release said gripping fingers fromsaid strips, 7/ V 5. In a device for punching and reenforcing materials as per claim 1, in which means are provided on said movable frame for locking said strips against retrograde movement. I

FRANZ LORENZ,

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