US3152501A

US3152501A - Paper perforating attachment for printing press

Info

Publication number: US3152501A
Application number: US78466A
Authority: US
Inventors: Nassar Frederick
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-12-27
Filing date: 1960-12-27
Publication date: 1964-10-13
Anticipated expiration: 1981-10-13

Description

Oct. 13, 1964 F. NAssAR 3,152,501 PAPER PERPoRATING ATTACHMENT PoR PRINTING PREss Filed nec. 27, 19Go 2 Sheets-Sheet 1 INVENTOR.

Oct. 13, 1964 F. NAssAR 3,152,501

PAPER PERFORATING ATTACHMENT FOR PRINTING PRESS Filed nec. 27, 1960 2 sheets-sheet 2 f7 fa I ENToR. jream Msg@ A ORNEYS.

United States Patent O M 3,152,501 PAPER PERFORATING ATTACHMENT FOR PRINTING PRESS Frederick Nassar, 1215 E. Madison St., Tampa, Fla. Filed Dec. 27, 1960, Ser. No. 78,466 Z Claims. (Cl. 83-303) This invention relates to the treatment of paper and more particularly to a paper perforating attachment for various types of printing presses, mimeograph machines or other machines where paper feeding means is employed and it is desired to perforate the paper being fed to the machine.

It has now become relatively common practice to provide printed business forms in a manner to conveniently permit the making of multiple copies and in order to accomplish this purpose, two or more sheets of paper are super-imposed with sheets of carbon paper inter-leaved therebetween with all of the sheets secured together along one edge to provide a manifolded assembly and it has further been common practice to perforate the sheets of paper along a line inwardly of the edge securing means in such a manner as to permit separation of the sheets to provide individual copies =by merely removing the sheets from the secured edge along the perforated line.

Considerable difliculty has =been experienced in providing suitable perforating means which could be utilized for rapid and relatively long production runs without necessitating sharpening or renewal of the perforating means and further, in some instances, the perforating means Ipreviously utilized has been located subsequent to the printing press with the result that the wet printing was often smeared. Another type of prior art perforating means has been utilized in connection wit-h oifset printing presses in which the perforating means comprises a ilexible strip of metal having :perforating teeth thereon with the strip being secured to the yieldable impression roller commonly termed a blanket, and in many instances this type of operating device has proved unsuitable for other than relatively short production runs and likewise, in some instances this particular perforating device has caused excessive damage to the press blanket requiring replacement of such blanket after cach printing operation which is a relatively costly and time consuming procedu-re.

It is accordingly an object of the invention to provide a paper perforating attachment for printing presses which may he conveniently applied to a printing press or removed therefrom without necessitating any modification whatsoever of such press and without requiring manipulation of any of the :press parts.

A further object of the invention is the provision of a paper perforating attachment for printing presses or the like which maybe conveniently applied to such presses by utilizing the conventional and normal structural parts of the press for mounting purposes.

A still further object of the invention is the provision of a paper perforating attachment for printing presses which may -be applied thereto for perforating purposes and removed therefrom to permit other Iuses of the press and without in any way damaging or otherwise altering the structure or normal use of the press.

Another object of the inventori is the provision of a paper perforating attachment for printing presses or the like in which a hardened steel perforating wheel is adjustably mounted on the press adjacent the paper .feed mechanism, the wheel having perforating teeth on the periphery thereof and in which a two-part sleeve is removably applied to a paper feeding roll to provide a platen for the perforating wheel which prevents damage to the feeding roll and at the same time, permits proper operation of the perforating wheel.

3,152,501 Patented Oct. 13, 1964 A further object of the invention is the provision of a paper perforating attachment for printing presses or the like, including means for adjusting the perforating attachment to accommodate sheets of paper or cards of varying thickness or to accommodate a varying number of super-imposed sheets of paper.

A still further object of the invention is the provision of a paper perforating attachment for printing presses or the like and including a steel perforating wheel having erforating teeth on the periphery thereof and in which the wheel may be conveniently removed for sharpening or for replacement `by another wheel having different perforating characteristics.

A still further object of the invention is the provision of a paper perforating attachment for printing presses or the like, which may be conveniently attached to such press and adjusted to provide a line of perforations at any desired location in paper being fed to the printing press.

Another object of the invention is the provision of a paper perforating attachment for printing presses or the like, which may be conveniently and economically manufactured from readily available materials in such a manner as to provide exceptionally long life and which may -be utilized without sharpening or attention for long production runs or a succession of such production runs.

Further objects and advantages of the invention will be apparent from the following description taken in conjunction with the accompanying drawings wherein:

FIG. l is a fragmentary view in perspective showing a portion of the feed mechanism and related structure of a printing press, together with the paper perforating attachment of this invention applied thereto in operative position;

FIG. 2 a fragmentary transverse sectional View showing the paper perforating attachment of this invention mounted on the feed mechanism of the printing press and further showing the manner in which the perforating attachment operates to perforate a sheet or sheets of paper being conveyed by the feeding mechanism to the printing press;

FIG. 3 a side elevational view with parts broken away and in section for greater clarity and showing the structure of the perforating wheel utilized in the attachment of this invention; and

FIG. 4 a fragmentary transverse sectional view showing the manner in which the semi-circular steel shells may be applied to the feed roll of the printing press to provide a sleeve thereon serving as a platen for the perforating wheel; and

With continued reference ot the drawings, there is shown in FIG. l, the feeding portion of one type of printing press and which may well include opposed

side frame members

10 and 11 connected by vertically and horizontally spaced

crossbars

12 and 13. The paper feeding mechanism also includes a vacuum conduit 14 and suitable adjusting mechanism 15, but such mechanism is not described in detail, since the same is included only to provide an environment for the paper perforating attachment of this invention and obviously, such attachment may be utilized with printing presses or similar apparatus having other specific paper feed mechanisms. The feed mechanism also includes conventional feeding belts 16 `and 17 as well as a guide rail 18 and a feed roll 19. The mechanism briefly described above serves to feed sheets of paper to a printing press or similar apparatus and such feeding mechanism is located on the inlet side of the press, the paper being fed thereby prior to operation of the press for printing thereon.

With particular reference to FIGS. 1 and 2, the paper perforating attachment of this invention may well comprise an elongated arm 20 which may be generally recangular incross section and may be conveniently passed or otherwise formed from a relatively light metal, such as aluminum, although if desired, the same may, of course, be made of steel or other suitable material. The arm is provided at one end with an enlargement 21 and provided in the enlargement 21 is a slot 22 which is substantially deeper than the diameter of the upper crossbar 12, but which is of a width substantially equal to the diameter of such crossbar. The slot 22 terminates at the inner end in an arcuate surface 23 having a radius equal to the radius of the upper crossbar 12 and a ller block 24 is provided for the outer end of the slot 22 with the iller block 24 being provided with an inner arcuate surface 25 having a radius equal to the radius of the upper crossbar 12, A screw threaded member 26 having a finger engaging knob 27 extends through an aperture 28 in the enlarged end 21 of the arm 20 and through an aperture 29 in the ller block 24 to be threadedly received in an aperture 30 in the enlarged end 21 of the arm 20 to securely hold the filler block 24 in position and thereby pivotally mount the arm 20 on the upper crossbar 12. It will be noted that this structure serves to pivotally mount the arm 20 for vertical swinging movement and that the arm 20 may be conveniently removed or replaced simply by removing or replacing the liller block 24. Since the inner arcuate surface 23 of the slot 22 and the inner arcuate surface 25 of the filler block 24 are provided with the same radius as the upper crossbar 12, the arm 20 is firmly and pivotally attached thereto by this structure.

The opposite end 31 of the arm 20 is provided with a slot 32fdisposed at right angles to the slot 22 in the opposite end of the arm 2t) and rotatably mounted on the arm 20 within the slot 32 is a hardened steel perforating wheel 33 which, as shown in FIG. 3, is provided with an anti-friction bearing 34 for receiving an axle 35 extending through an aperture 36 in the bearing 34 and through apertures in the arrn 20 adjacent the outer end of the slot 32.' The axle 35 may be secured in place by screw threaded fastening means or the like 37 and such fastening means, as well as the aXle may be conveniently removed to permit removal of the wheel 33-for sharpening or replacement by another wheel having different characteristics. As shown in FIGS. 1 and 3, the perforating wheel 33 is provided with a beveled outer surface 38 and with a series of equally spaced radial slots 39 in the periphery thereof which serve to provide a plurality of spaced perforating teeth 4t) on the periphery of the wheel 33. The teeth 40 are provided with a relatively sharp cutting edge 41 which operates in a manner to be presently described.

As will be clear from an inspection of FIGS. 1 and 2, the perforating wheel 33 is disposed directly above the feed roll 19 and in order to protect the surface of the feed roll 19 from damage by the wheel 33 and also in order to provide a platen or backing means for the Wheel 33, a hardened steel sleeve 42 is applied to the feed roll 19 and as best shown in FIG. 4, such sleeve 42 may take the form of a pair of hardened steel

semi-circular shells

43 and 44 which may be applied to the surface of the feed roll 19 and secured thereon by glue or some other suitable adhesive or if desired, other fastening means for securing the

shells

43 and 44 in place on the feed roll 19 may be employed. As shown in FIGS. l and 2, the sleeve 42 is disposed opposite the perforating wheel 33'and engages the cutting edges 41 of the perforating teeth 40 during operation of the attachment.

Since it is necessary to urge the perforating wheel 33 against the sleeve 42 with some pressure during perforating operations and further, since it is necessary to adjust such pressure depending upon the thickness of paper or cards or the numbers of layers of paper being perforated suitable adjusting means is provided and as best shown in FIGS. 1 and 2, this adjusting means may take the form of an elongated threaded rod 45 slidably received in an aperture 46 in the arm 20 in the plane of the wheel 33 with an end 47 of the rod 45 being formed as a hook to engage under the lower crossbar 13 of the printing press. A compression spring 48 is slidably received on the rod 45 with one end 49 of the spring 43 engaging the upper surface `of the arm 20 and with the opposite end 50 of the spring 48 engaging a wing nut 51 threadedly received on the rod 45. Obviously, adjustment of the wing nut 51 will serve to adjust the compression of the spring 48 thereby adjusting the force with which the perforating wheel 33 engages the sleeve 42 on the feed roll 19. When removing the perforating attachment of this invention from the printing press it is only necessary to loosen the wing nut 51 sufficiently to permit disengagement of the hookshaped end 47 from the lower crossbar 13 and thereafter upon removal of the filter block 24, the entire perforating attachment may be removed from the press.

In operation and with the attachment of this invention applied to the press in the manner above described, the paper to be perforated which may comprise a single sheet of any desired thickness or a plurality of superimposed sheets of paper are fed to the perforating attachment as shown by dotted lines 52 -in FIG. 2 and it is, of

course, understood that the wing nut 51 has been adjusted to provide the proper degree of pressure between the perforating wheel 33 and the sleeve 42 on the feed roll 19. As the paper 52 passes between the perforating wheel 33 and the sleeve 42, the perforating teeth 40 will pass through the paper 52 and into engagement with the sleeve 42 to perforate the paper with the portions of the paper falling in the slots 39 remaining intact. It has been found that this perforating attachment may be operated at a relatively high rate of feeding speed and furthermore, the attachment willy operate for extremely long production runs 4or a succession of such runs without becoming dull or in any way impairin g the perforating operation, Since the perforating operation is performed priorto the printing operation, no smearing or other damage to the printed copy may result and furthermore, since the perforating attachment of this invention is entirely independent of the printing mechanism, the attachment may be so positioned as to locate a line of perforations at any desired distance from the edge of the paper to be perforated.

The convenience of attaching or removing the perforating attachment from the printing press is of particular significance as is also lthe fact that any damage to the press or parts thereof is prevented by the use of the steel sleeve 42 on the feed roll 19 and furthermore, no modification of the press or feed structure is necessary and no manipulation of the parts thereof is required for installation or removal of the perforating attachment of this invention.

It will be obvious to those skilled in the art that various changes may be made in the invention without departing from the spirit and scope thereof and therefore the invention is not limited by that which is shown in the drawing and described in the specification, but only as indicated in the appended claims.

What is claimed is:

l. A paper perforating attachment for a printing press having opposed side frame members, vertically and horizontally spaced crossbars connecting said frame members and a paper feeding mechanism including a feed roll disposed in a plane below the lowermost crossbar, said attachment comprising an elongated arm generally rectangular in cross section and inclined downwardly toward said roll, one end of said arm having a slot for receiving the upper crossbar, said slot being substantially deeper than the diameter of said upper crossbar and terminating at the inner end in an arcuate surface having the same radius as said upper crossbar, a filler block for the outer end of said slot, an inner arcuate surface on said block for engaging said upper crossbar and having the same radius as said upper crossbar, a threaded screw having a wing nut at the top thereof for releasably securing said block in said slot to pivotally mount said arm on said upper crossbar for free pivotal movement toward and away from the feed roll, the opposite end of said arm having a slot disposed at right angles to said first mentioned slot, a hardened steel perforating wheel received in said last mentioned slot and rotatably mounted on said arm, perforating teeth on the periphery of said wheel, said perforating wheel having opposite planar bearing surfaces projecting outwardly from the sides thereof and each side of said wheel having a beveled periphery terminating at an `outer portion having said perforating teeth thereon, a pair of hardened steel semicircular shells for application to said roll to provide a sleeve thereon in alignment with said Wheel, said sleeve serving as a platen for said wheel, said arm having an aperture in the plane of said wheel, said aperture being inclined in a substantially perpendicular direction to the inclination of said arm, a circular threaded rod slidably received in said aperture, a semi-circular hook on one end of said rod engaging the lower crossbar, a compression spring lon the opposite end of said circular rod engaging said arm and a wing nut threaded on said rod engaging said spring to adjust the pressure between said wheel and said sleeve.

2. A paper perforating attachment for a printing press having opposed side frame members, vertically and horizontally spaced crossbars connecting said frame members and a paper feeding mechanism including a feed roll disposed in a plane below the lowermost crossbar, said attachment comprising an elongated arm downwardly inclined toward said roll, one end of said arm having a slot for receiving the upper crossbar, said slot being substantially deeper than the diameter of said upper crossbar and terminating at the inner end in an arcuate surface having the same radius as said upper crossbar, a iiller block for the outer end of said slot, an inner arcuate surface on said block for engaging said upper crossbar and having the same radius as said upper crossbar, means for releasably securing said block in said slot to pivotally mount said arm on said upper crossbar for free pivotal movement toward and away from the feed roll, a perforating Wheel rotatably mounted on said arm at the opposite end from said slot, perforating teeth on the periphery of said wheel, a pair of semi-circular shells for application to said roll to provide a sleeve thereon in alignment with said wheel, said sleeve serving as a platen for said wheel, said arm having an inclined aperture in the plane of said wheel, the Iincline of said aperture being positioned in a substantially perpendicular direction to the inclination of said arm, a threaded rod slidably received in said aperture, a hook on one end of said rod engaging the lower crossbar, a compression spring on the opposite end of said rod engaging said arm and a wing nut on said rod engaging said spring -to adjust the pressure between said wheel and said sleeve, whereby said arm can pivotally slide in a vertical direction upon the inclined threaded rod.

References Cited in the tile of this patent UNITED STATES PATENTS 1,164,222 Sasgen Dec. 14, 1915 1,678,410 Warrington July 24, 1928 2,084,573 Cowan June 22, 1937 2,434,624 Peterson Jan. 13, 1948 2,684,117 Wood July 20, 1954 2,735,488 Anderson Feb. 21, 1956 FOREIGN PATENTS 484,402 Great Britain May 2, 1938

Claims

1. A PAPER PERFORATING ATTACHMENT FOR A PRINTING PRESS HAVING OPPOSED SIDE FRAME MEMBERS, VERTICALLY AND HORIZONTALLY SPACED CROSSBARS CONNECTING SAID FRAME MEMBERS AND A PAPER FEEDING MECHANISM INCLUDING A FEED ROLL DISPOSED IN A PLANE BELOW THE LOWERMOST CROSSBAR, SAID ATTACHMENT COMPRISING AN ELONGATED ARM GENERALLY RECTANGULAR IN CROSS SECTION AND INCLINED DOWNWARDLY TOWARD SAID ROLL, ONE END OF SAID ARM HAVING A SLOT FOR RECEIVING THE UPPER CROSSBAR, SAID SLOT BEING SUBSTANTIALLY DEEPER THAN THE DIAMETER OF SAID UPPER CROSSBAR AND TERMINATING AT THE INNER END IN AN ARCUATE SURFACE HAVING THE SAME RADIUS AS SAID UPPER CROSSBAR, A FILLER BLOCK FOR THE OUTER END OF SAID SLOT, AN INNER ARCUATE SURFACE ON SAID BLOCK FOR ENGAGING SAID UPPER CROSSBAR AND HAVING THE SAME RADIUS AS SAID UPPER CROSSBAR, A THREADED SCREW HAVING A WING NUT AT THE TOP THEREOF FOR RELEASABLY SECURING SAID BLOCK IN SAID SLOT TO PIVOTALLY MOUNT SAID ARM ON SAID UPPER CROSSBAR FOR FREE PIVOTAL MOVEMENT TOWARD AND AWAY FROM THE FEED ROLL, THE OPPOSITE END OF SAID ARM HAVING A SLOT DISPOSED AT RIGHT ANGLES TO SAID FIRST MENTIONED SLOT, A HARDENED STEEL PERFORATING WHEEL RECEIVED IN SAID LAST MENTIONED SLOT AND ROTATABLY MOUNTED ON SAID ARM, PERFORATING TEETH ON THE PERIPHERY OF SAID WHEEL, SAID PERFORATING WHEEL HAVING OPPOSITE PLANAR BEARING SURFACES PROJECTING OUTWARDLY FROM THE SIDES THEREOF AND EACH SIDE OF SAID WHEEL HAVING A BEVELED PERIPHERY TERMINATING AT AN OUTER PORTION HAVING SAID PERFORATING TEETH THEREON, A PAIR OF HARDENED STEEL SEMICIRCULAR SHELLS FOR APPLICATION TO SAID ROLL TO PROVIDE A SLEEVE THEREON IN ALIGNMENT WITH SAID WHEEL, SAID SLEEVE SERVING AS A PLATEN FOR SAID WHEEL, SAID ARM HAVING AN APERTURE IN THE PLANE OF SAID WHEEL, SAID APERTURE BEING INCLINED IN A SUBSTANTIALLY PERPENDICULAR DIRECTION TO THE INCLINATION OF SAID ARM, A CIRCULAR THREADED ROD SLIDABLY RECEIVED IN SAID APERTURE, A SEMI-CIRCULAR HOOK ON ONE END OF SAID ROD ENGAGING THE LOWER CROSSBAR, A COMPRESSION SPRING ON THE OPPOSITE END OF SAID CIRCULAR ROD ENGAGING SAID ARM AND A WING NUT THREADED ON SAID ROD ENGAGING SAID SPRING TO ADJUST THE PRESSURE BETWEEN SAID WHEEL AND SAID SLEEVE.