US384532A - Punch - Google Patents

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US384532A
US384532A US384532DA US384532A US 384532 A US384532 A US 384532A US 384532D A US384532D A US 384532DA US 384532 A US384532 A US 384532A
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Prior art keywords
punch
cutter
sheet
edge
cutting
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/12Slitting marginal portions of the work, i.e. forming cuts, without removal of material, at an angle, e.g. a right angle, to the edge of the work
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00Clicking, perforating, or cutting leather
    • C14B5/02Stamps or dies for leather articles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/929Tool or tool with support
    • Y10T83/9372Rotatable type
    • Y10T83/9382Punching plus nonpunching tool
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/929Tool or tool with support
    • Y10T83/9411Cutting couple type
    • Y10T83/9418Punching plus nonpunching tool

Description

M. D. KNOWLTON.
v PUNCH. No. 384,532. Patented June 12, 1888.
@KM/4. L M075; "L gw@ UNITED STATES PATENT EEicE.
MARK D. KNOWLTON, OF CHICAGO, ILLINOIS.
PUNCH.
SPECIFICATION forming part of Letters Patent No. 384,532, dated `Tune 12, 1888.
Application filed August 19,1887. serial No. 247,340. (No model.)
To aZZ whom it may concern.-
Beit knownthat I, MARK D. KNowLToN, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Punches; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specilication.
This invention relates to a novel construction in punches of that kind used for cutting objects of various shapes from sheets or plates of paper, straw-board, metal, or other material.
The invention consists in the matters hereinafter described, and pointed out in the appended claims.
A punch embodying my invention embraces, in addition to the projecting part carrying the cutting-edge by which the object to be formed is severed about its margins from the plate or sheet, an auxiliary cutter extending outwardly from the main cutting-edge of the punch and acting to sever the material of the sheet or plate across the part between the line at which the sheet is cut by the punch and the aperture left by the removal of the piece previously cut out. The auxiliary cutter thus serves to trim the edge of the sheet as the cutting progresses, so as to leave the sheet with an even or uniform edge and in convenient form for handling.
In the accompanying drawings, Figure l is a perspective view of a punch embodying my invention. Fig. 2 is a face view of the same. Fig. 3 is a side elevation of thesame, showing the flat face of the auxiliary cutter. Fig. 4 is a side elevation of the same, showing the auxiliary cutter in end view. Fig. 5 is a detail view of an adjustable clampplate employed for holding the auxiliary cutter in place. Fig. 6 is a view of a sheet from which a series of disks have been out by the punch shown in Figs. 1, 2, 3, 4, and 5, illustrating the action of the auxiliary cutter.
In the drawings, Figs. I to 5, A indicates as a whole a frame or holder adapted for attachment to a press or other actuating device and constructed to receive and hold a punch 'of any size or shape B indicates a solid punch of cylindric shape, which is attached to the holder A by means of a cylindric shank on the punch entering an axial recess in the holder and secured therein by means of a set-screw, B3.
C is an auxiliary cutter, which is provided with an acute or chisel edge, and is arranged with one of its ends in contact with the side of the punch. Said cutter in the particular embodiment of my invention herein shown is held in operative position with relation to the punch by a clamping or holding device so arranged that the said auxiliary cutter may be moved or shifted in. position both laterally and endwise, to correspond with the form or size of punch which is secured in the said holder.
The holder A herein illustrated is provided with a cyliudric shank, A', having` an enlarged Hat part or plate, A2,. against which the punch B directly rests or bears. Devices are provided in the particular holder shown for adjustably supporting the cutter C, as follows: The cutter in this instance consists of a flat plate beveled at one side to form an acute cutting-edge. A2 of the holder is formed a recess, A3, within which are located two clampplates, D D, arranged to bear against opposite sides of the cutter C. The said plates are held in contact with the cutter by means of opposing setscrews E E, inserted through opposite sides of the plate A2, and extending into the recess Aa in such manner as to sustain the clamp-plates in a desired position therein. As herein shown, four set-screws E E are used for holding the clampplates in place; but a greater or less number may be used in practice, as desired. The recess A.3 and clamp-plates D D extend inwardly to a point adjacent to the shank of the punch, thereby enabling the aux iliary cutter to be secured in place with its end in contact with a punch of the smallest size adapted to be placed in the holder.
By backing out or advancing the set-screws E E the clamp-plates and cutter may be shifted laterally to bring the cutting-edge in a desired position relatively to the cutting-edge of the punch, according to the width of the waste strip which it is desired to cut from the margin of the sheet.
In the lower surface of the plate' l IOO The cutting-edge of the auxiliary cutter C is set back from the lower face of the punch such distance that when the punch is advanced into the opposing matrix the full extent of its throw the edge ofthe critter will come in contact or nearly in contact with the upper face of the matrix, thereby acting with direct pressure to cut or sever the sheet in its part adjacent to the punch. Even if the cutter does not come in actual contact with the matrix the sheet will usually be cut sufficiently to be easily separated, and the general result desired thus attained. In the case of material like thick straw-board, for instance, the oblique edge of the cutter will force or break away the stock along the cut, so as to com' pletely sever the same when the cutter passes only part way through the sheet.
B', Figs. 3 and 4, indicates the matrix, and B2 a sheet laid over the same beneath the punch. In Fig. 3 the punch is shown as free from the matrix; but in Fig. Ll it is shown as advanced into the matrix a suiiieient distance to carry the edge of the cutter C through the sheet resting upon said matrix.
In the use of a punch provided with an auxiliary cutter arranged as above described the sheet is fed to the punch with its edge approximately parallel with the cutter, and is advanced to the cutter in such direction that the auxiliary cutter extends forwardly from the punch, (referring to the direction of motion of the sheet,) and is located at the side of the cutter nearest the body or uncut portion of the sheet, so that the parts of the sheet left between the cuis are continually severed from the main part of the sheet as the cutting progresses.
The operation of the auxiliary cutter in the manner set forth may be more readily understood by reference to Fig. 6, which shows the marginal part of a sheet from whichanumber of disks have been cut by a. punch like that shown in Figs. l to 5. H, in said Fig. 6, is the sheet, h 71 are a series of holes left by the removal of the disks, and the lines h h. indicate the cuts made bythe auxiliary cutter. In cutting circular disks the surplus material along one line of holes will not be entirely severed until the cuts have been made throughout the full length of the sheet, and in said Fig. 6 if lf indicate the lines of the cuts made by the auxiliary cutter in punching out a previous line of holes, while H indicates as a whole the strip of surplus material which will be severed from the sheet after the holes h h have been formed throughout the full width of the sheet.
The employment of an auxiliary cutter acting to trim the edge ofthe sheet as fast as objects are cut therefrom by a punch is of especial utility in the case of a punching-machine embracing a guide or gage for determining the position of the edge of the sheet with relation to the punch, and alsoin machines having automatic feed devices for the sheets, for the reason that the severing of the projecting surplus parts of the sheets leaves a straight edge or a series of projecting parts after each row of cuts, whereby the sheet may be placed or held against the guide in a hand-feeding machine or the guides of the feed devices in an automatic machine, and the position of the sheet thereby accurately determined.
The employment of the auxiliary cutter, severing the waste as the holes are formed, furthermore enables a gage acting against the newly-cut edge to be used in addition to the back gage, or that at the rear of the punch, heretofore employed. The use of such second gage greatly facilitates the handling ofthe stock by affording a guide to the advance end of the sheet at the time the latter is so far advanced as to have but little bearing upon the back gage. Heretofore in the use of a punching-machine having a back gage to guide the stock, as well as in automatically-feeding machines, it has been colnmon to eut the stock into narrow strips somewhat wider than the articles to be formed, in order to afford suitable guiding-ed ges by which each row of holes may be made. In the use of a punch made with an auxiliary cutter such as is herein shown, however, such cutting into strips is not required, whereby the holes may be made closer to each other, with a large saving of waste and a corresponding economy in the use ofthe stock, and the labor of cutting the stock into strips is avoided.
It will of course be understood that the aux iliary cutter, arranged and operating in the manner described, may be employed in connection with punches of any shape, and when said punches have a cutting-edge of either regular or irregular form.
The main feature of novelty in my invention embraces a punch and matrix or similar cutting device provided with an auxiliary cutter arranged to act against an opposing surface of the matrix to sever the blank sheet or plate in the part of the latter adjacent to the cutter in such manner as to cut or slit the said sheet or plate outwardly from thc opening made therein by the punch-as, for instance, the appended first claim covers the auxiliary critter when made either integral with or separate from the punch proper, or when either immovably or adjustably connected with the punch or its support. Such auxiliary cutter, furthermore, may obviously be arranged at any desired angle with relation to the punch.
The particular construction shown in Figs. l to 5, embracing means for adjustably supporting the cutter, forms a separate improvement, which is herein specifically claimed as part of my invention.
I claim as my inventionl. The combination, with a punch and a die or matrix, of an auxiliary cutter extending outwardly from thepuncln said auxiliary cutter having its cutting-edge set back from the cutting-edge ofthe punch and arranged to act against an opposing fiat surface of the die or matrix, substantially as described.
ICO
2. The combination, with a punch and a die or matrix, of an auxiliary cutter attached to and extending outwardly fromthe punch, the cutting-edge of said auxiliary cutter being set back from the cuttingedge of the punch and arranged to act against an, opposing dat surface of the matrix, and means adjustably connecting said cutter with the punch, whereby the edge of the cutter may be adj usted with relation to the opposing face of the matrix, substantially as described.
3. The combination, with a punch and a die or matrix, of an auxiliary cutter extending outwardly from the cutting-edge of the punch and' arranged to act against an opposing flat surface of the matrix, and a holder for the said punch and auxiliary cutter, said cutter being adjustably sustained in the holder by means affording both an endwise and lateral adjustment of the cutter, substantially as described.
4. The combination,with a punch, of aholder for the same provided with a shank for attachment to a punching-machine, and with a plate supporting the punch and provided with a recess in its lower face, an auxiliary cutter, movable clampplates located within the said recess, and opposing set screws inserted through said plate and bearing against the clamp-plates, substantially as described.
In testimony that I claim the foregoing as my invention I affix my signature in presence of two witnesses.
MARK D. KNOWLTON.
W'itnesses:
.0. CLARENCE POOLE,
O. N. WILLIs.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684192A (en) * 1949-02-28 1954-07-20 Scotts Engineering Newport Ltd Capping head for bottle capping machines
US2777517A (en) * 1950-11-14 1957-01-15 Conmar Prod Corp Apparatus for providing tape ends on slide fastener stringers
US3517580A (en) * 1968-07-26 1970-06-30 Tension Envelope Corp Quick change chisel
US4509396A (en) * 1982-05-29 1985-04-09 Bielomatik Leuze Gmbh & Co. Apparatus for making holes in thick stacks of paper
US5052258A (en) * 1989-03-16 1991-10-01 Hunter Theodore K Cutter
US5373767A (en) * 1992-04-16 1994-12-20 Mercedes-Benz Ag Trimming tool for trimming drawn parts and for simultaneous transverse cutting
US20110219926A1 (en) * 2010-03-10 2011-09-15 Stolle Machinery Company, Llc Tooling assembly, blanking tool therefor and associated method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684192A (en) * 1949-02-28 1954-07-20 Scotts Engineering Newport Ltd Capping head for bottle capping machines
US2777517A (en) * 1950-11-14 1957-01-15 Conmar Prod Corp Apparatus for providing tape ends on slide fastener stringers
US3517580A (en) * 1968-07-26 1970-06-30 Tension Envelope Corp Quick change chisel
US4509396A (en) * 1982-05-29 1985-04-09 Bielomatik Leuze Gmbh & Co. Apparatus for making holes in thick stacks of paper
US5052258A (en) * 1989-03-16 1991-10-01 Hunter Theodore K Cutter
US5373767A (en) * 1992-04-16 1994-12-20 Mercedes-Benz Ag Trimming tool for trimming drawn parts and for simultaneous transverse cutting
US20110219926A1 (en) * 2010-03-10 2011-09-15 Stolle Machinery Company, Llc Tooling assembly, blanking tool therefor and associated method
US20170087618A1 (en) * 2010-03-10 2017-03-30 Stolle Machinery Company, Llc Tooling assembly, blanking tool therefor and associated method
US10710140B2 (en) * 2010-03-10 2020-07-14 Stolle Machinery Company, Llc Tooling assembly, blanking tool therefor and associated method

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