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Publication numberUS412618 A
Publication typeGrant
Publication dateOct 8, 1889
Filing dateJul 22, 1889
Publication numberUS 412618 A, US 412618A, US-A-412618, US412618 A, US412618A
InventorsFrederick Iiolz
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Process of and apparatus for punching and feeding blanks
US 412618 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)



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SPECIFICATION forming part of Letters Patent No. 412,618, dated October 8, 18.89.

Application filed July 22, 1889. Serial No. 318,276. (No model) 1 To all 1071,0122 it may concern.-

Be it known that I, FREDERICK How, a

citizen of the United States, residing atCincmnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in the Process of and Apparatus for Punching and Feeding Blanks for IV-ads, \Vashers, and the Like, of which the following is a full, clear, and exact.- description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a process of and apparatus for punching out blanks for wads, washers, and the like from a fed-in strip of the material, reinserting such punched-out articles into the strip from which they were punched, and then feeding them on with the strip to the point of delivery or discharge; and its object is to improve the process of and apparatus for punching and feeding blanks for wads,'washers, and the like.

The novelty of my invention will be herein set forth, and specifically pointed out in the claims.

In the accompanying drawings, Figure l is an elevation of a machine embodying iny invention and for carrying out my process. Fig. 2 is a sectional side elevation through the dotted line a; az'of Fig. 1, looking in the direction of the arrow and with the punch and associated parts up. Fig. 3 is a corresponding view to Fig. 2, with thepunch and associated parts down.

The same letters of reference are used to indicate identical parts in all the figures.

Any suitable frame-workconsistin g in this instance of a table A and uprights B.-has journaled in the top of the uprights a shaft 0, provided with a driving-pulley D, and two eccentrics or cranks, from the former of which a pitman E extends down and is connected to a vertically-reciprocating head or plunger F, suitably guided between the uprights B.

Secured to the plunger E, preferably by setscrews a, so as to be adjustable, is a punch G and a discharger H, pendent therefrom and in line with each other. The punch and diseharger are of the same size and shape, usually circular in cross-section, and are arranged directly over a horizontal dieplat-e I, having two perforations b I: through it, the

} former directlybeneath the punch G and the latter beneath the discharger ll. Directly beneath. the perforation Z), and in this instance supporting the plate I, is a tube or hollow frame J, secured to the table A and containing a coiled or other spring (7, upon which is supported a follower 0, whose upper as in this instance, within a tube 7, secured in the perforation b, and against whose lower edge a flange g upon the follower is forced, by the action of the spring (I, to bring the top of the follower flush with the top surface of the plate I. Beneath the spring cl is a washer 72 adjusted by 'a set-screw 1', passed through the table for regulating the tension of the spring (I. i

K L are two feed-rollers suitably journaled between uprights j upon the table, for feeding the strip of material )f, whether paper, felt, leather, or metal, onto the plate I, by successive equal steps of advancement. Any suitable mechanism for actuating these feed rolls may be employed, and I have illus trated the roll K as secured to a shaft A, car rying a ratchet Z, which is acted on at each upstroke of the plunger 1 by a dog pivoted to a carrier m, hung upon the shaft 7o by the side of the ratchet I, and pivoted to the lower end of a rod 12, whose upper end is connected to an eccentric or crank upon the shaft 0 by the side of the wheel D.

Upon the lower end of the punch G is fitted a sliding clamping collar 0, between which and a collar, 1) upon the punch is a coiled spring q, surrounding the punch. The collar 1) is preferably adjustable by a setscrew to regulate the tension of the spring q, and the collar 0 is held upon the punch by a pin 2' in the latter passed through a vertical slot in theformer, or vice versa, as will be readily understood. From this construction it will be seen that the strip having been fed in upon the plate I, provided with suitable guides-4n this instance ribs 3, Fig. 1be neath the punch, as the latter descends the collar 0 is first arrested upon the strip which it clamps, and then the punch punches out the blank, the follower c yielding for that purpose, as seen in" Fig. Upon the ascent of the punch, as seen in Fig. 2, and before the strip is fed farther in, the follower is forced end snugly fits within the perforation b, or,

up by its spring (I, thereby reinsert-ing the punched blank into the space it occupied in the strip before punching. 'Afterthis, upon the further ascent of the plunger, the strip is fed into any suitable receptacle, and so on con tinuously, so that at each downstrokeablank is punched and another previously punched discharged, as will be readily understood.

Having thus fully described my invention, I claim- 1. The process of punching blanks from a fed-in strip, consisting in first punching out the blank, then reinsertiug said blank into the strip, and then feeding the strip carrying the punched-out blank to a: discharger, substantially as described.

2. In a blank-punching machine, the com- 'inga punch and a discharger,

bination, with a reciprocating plunger carryof a die-plate for the fed-in strip provided with perforations beneath said punch and discharger, and a yielding follower beneath said punch for replacing the punched out blanks into the strip, substantially as described, 7

3; In a blank-punching machine, the combination, with a reciprocating plunger carrying a punch and a discharger, of a die-plate for the fed-in strip provided with perforations beneath-said punch and discharger, a yielding follower beneath said punch for replacing'the punched-out blanks into the strip, and mechanism for feeding in the strip, substantially as described.

4. The combination and arrangement of the punch'G, discharger H, die-plate I, provided with perforations Z) c, and tube J, provided with spring d and follower e, substantially as and for the purpose described. 4



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2564354 *Aug 8, 1947Aug 14, 1951Danly Mach Specialties IncForming apparatus
US2790499 *May 11, 1954Apr 30, 1957Western Electric CoCompound punch and die
US2815121 *Jun 9, 1954Dec 3, 1957Makatag Machine CorpTag patch supply
US3127804 *Jun 8, 1961Apr 7, 1964Bufalino Louis CStamping and loading apparatus
US3383065 *Apr 14, 1965May 14, 1968Mitchell Co A JStrip punching and feeding apparatus
US4377957 *Jul 3, 1980Mar 29, 1983The Boeing CompanyJoined blanking tool
US4613321 *Sep 6, 1985Sep 23, 1986Preston Engravers, Inc.Diecutting roll system with improved scrap disposal capability
US4785655 *Jan 5, 1987Nov 22, 1988General Electric CompanyMethod and arrangement for producing knockouts for electrical equipment cabinets
US5349740 *Apr 5, 1993Sep 27, 1994L. H. Carbide CorporationMethod and progressive die assembly with separate blanking and stacking for the manufacture of laminated parts
US5359763 *Mar 22, 1994Nov 1, 1994L. H. Carbide CorporationProgressive die assembly apparatus with rotation and interlock for the manufacture of laminated parts
US6925922 *Oct 25, 2002Aug 9, 2005Renesas Technology Corp.Apparatus for removing tiebars after molding of semiconductor chip
US20030079734 *Oct 25, 2002May 1, 2003Mitsubishi Denki Kabushiki KaishaApparatus for removing tiebars after molding of semiconductor chip
US20050230789 *Jun 21, 2005Oct 20, 2005Renesas Technology Corp.Method for removing tiebars after molding of semiconductor chip
Cooperative ClassificationB26D3/003, B21D28/10