US2145207A - Perforating machine - Google Patents

Description

Jan. 24, 1939. R. BECKERl PERFORATING` MACHINE Filed Aug. ll, 1'936 2 Sheefcs-Shee't 1 Rudoljoh Beeke r' Jan. 24, 1939. R. BECKER 42,145,207

` PERFORMING MACHINE Filed Aug. ll, v1936 Sheets-Sheet 3.9 l sa -v z5 .so a@ Patented Jen. 24, 193e PATENT oFFl-CE PERFORATING MACH-INE. l

Rudolph Becker, North Plainfield, N. J., assigner toThe kSinger Manufacturing Company, Elizabeth, N. J., a. corporation of New Jersey Application August` 11, 1936,v Serial 'Nor 95,323

5 claims. Y (c1.I 164-.-87)

This invention relates ktomachines for feeding and periorating material 'and has for an object to provide a machine which will rapidly make rows of clean-cut perforations in the work vand which may be readily adjusted and maintained in eiiicient operative condition.

With the above and other objects in view, as will hereinafter appear, the invention comprises the devices, combinations and arrangements of parts hereinafter set forth and illustrated in the accompanying drawings of a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understoodfby those skilled in the art.

Fig. 1 of the drawings is a rear sideelevation, of a perforating machine embodying the invention. Fig. 2 is a section on the line 2 2, Fig. 1, reversed end for end. Fig. 3 is av front end elevation of the machine. Fig. 4 is an enlarged vertical sectional view through the reciprocatory anvil-carrying bar of the perforating mechanism. Figs. 5 and 6 are, respectively, sectionson the lines 5-5 and 6 6, Fig. 2. Fig. '7 is an enlarged vertical section ,through the coacting elements of the perforating mechanism taken in the line offeed of the machine. Fig. 8` is a similar view taken transversely ofl the line of feed. Fig, 9 is a fragmentary viewof the` machine showing a felt hat in position to receive one or more rows of perfcrations crcumferentially of its crown. Fig. 10 is a face view of a work-guide used with the machine, and Fig. 11 is al perspective View of the work-support block and punch element carried thereby.

In the main, the present machine is preferably constructed along the lines of a cylinder-bed sewing machine and, like a sewing machine, hasV a frame including a standard I carrying a cylinder bed or work-supporting arm 2 and an overhanging bracket arm 3 terminating in a head 4. M

There is mounted in the head 4, in lieu of the usual sewing machine needle-bar, a reciprocatory anvil-bar a comprising two sections 5 and 5, Fig. 4, the former of which Yis tubular and at its lower end telescopically receives the shorter solid `section 6 which at its lower end is socketed to receive the anvil member 'l preferably made of brass and secured in the socket in the anvil-bar by the screw 8. The portion of the solid section 6110i the anvil bar which is received in thetubular section 5 is formedwith a vertical slot Sip-through which passes a pin Ill -xeddiametricallyof the tubular section 5. This pin and slot connection prevents separation-jef: the sections 5 and 6 of the'anvil-bar and permitsa relative vertical end- Wisemovement of suchsections. A stiff vcoilspring VII-housedwithin the tubularA section 5 presses downwardly upon the upper'end ofthe solid'section Bof the anvil-bar. The tubular section 5 `is formed at its upper end with an oil hole I2 The 'anvil-bar aisj mounted to reciprocate'in thebearings I3," IS in thehead 4 and `the tubular sectionV 5 of such anvil-bar is connected by the link Ill'to thefront end of a'levei1v I5which is fulcrurnedA within the"bracket-a'rm 3 at I Iiand at its rearward end is connected to the upper end` ofa pitmani'l which at its lower'end embraces the ball-crank I8 onthemain shaft I9 vcarrying the balance-wheel and power-receiving beltpulley'Zil common to sewing machines.

Mounted vwithin the cylinder-bed 2, below the Work-plate 2l thereof, isthe'tubular punch-'element 22` having at its upper end a sharpened circular edge-23v which cuts against ythe flat'lower end'24 of the anvil 'I. The passageway 25 Within the punchZZ 'has a lateraldischarge opening'll for vthe chips or punchings 2l, Fig. 8. The reduced cylindrical lower end-portion 28 of the punch 22 isreceivedin a socket 29 in the worksupport block`30 Whichis secured by the screw 3| in the' slideway 32v extending horizontally across the free end 'of the frame of the worksupporting arm Z. 'I'he clearance hole`33 in the block 30 for the shankoof the screw 3| is large enough to permit a limited adjustment of the block 3Qk in the'slideway 32. The punch 22 is yheld in its socket in the block 30 by means of the head of the screw 34. The lower end of the punch 22 is engaged by a plate 35 supported by the screw 36,`Fig. 8, by turning which the Vpunch 22 ymay be adjusted vertically. The punchl 22 is preferably so set thatV it arrests the down movement of the anvil'l'slightly before the upper tubularsection 5 ofjthe anvil-bar a.' reaches its lower limit of movement; the spring II yielding so that a rigid or harsh engagement of the punch and anvil elements is avoided andthe reaction upon the anvil-driving mechanism is cushioned. The springA II isA strong'enough Vand under sulcient compression toaccomplish the cutting of the material without yielding until the anvil and punch come intocontact. The work-support 30 isiormed at. its .upper end with a work-supporting surface 31 flush `with the surface of the worksupport2l. In the-surface 3l is a depression 38 which exposes the sharpened upper end of the punch 22 also set vflushwith the work-supporting surfaces of the parjss.1l-and'V 3,0. rThe depression 38 receives the portion of the work immediately surrounding the hole being out, when the work is depressed by the anvil member 1, as shown in Figs. '1 and 8.

For feeding the work step-by-step, in timed relation with the reciprocatory motionof the anvil-bar a, the machine may be provided with a four-motion feed-dog 39 such as is common to sewing machines. The feed-dog 39 is preferably of inverted L-shape in top plan, as shown in Fig. 2, i. e., it has a notch or cut-out 39' in which the punch 23 is located and has work-engaging teeth in rear of the punch 23 and other teeth at one side of the punch 23. The feed-dog 39, by engaging the work at the side of as well as in rear of the punch 23, is thus well Vadapted to lift or strip the work from the punch-element 22 in its rising movement. The feed-dog 39 is rigidly mounted on one end of the feed-bar 40 which extends lengthwise of the cylinder bed 2 and, at its opposite end has xed thereto a casting 4I which is journaled on the horizontal cross-pin 42 fixed to the side lug 43 on the vertical sleeve 44 which latter is journaled on the xed vertical stud-pin 45 mounted in the machine frame. V The feed-bar 46 is thus mounted for universal movement at its end remote from the feed-dog 39.

Projecting forwardly horizontally from the feed-bar is a pin 46 which enters a hole 41, Fig. 5, in an eccentric follower 48 embracing the feedlift eccentric 49 on'the main shaft I9. This eccentric moves the feed-dog 39 up and down or into and out of engagement with the work.

Projecting vertically from a bracket 50 fixed to the feed-bar 49 is a pin 5l which enters a hole in the eccentric follower 52 embracing the conventional adjustable feed-advance eccentric 53 on the main shaft. The eccentric 53 imparts the feed-and-return components of motion to the feed-dog 39.

Opposed to the feed-dog 39 is the presser-foot 54 having a clearance aperture 55 forthe anvil element 1. The presser-foot 54 is mounted on the presser-bar 56 which slides vertically in bearings in the head i4 and is pressed downwardly by the spring 51 the pressure of which may be regulated by the screw 58. The presser-foot andbar may be raised for insertion and removal of work by manipulation of the usual treadle-controlled presser-lifting lever 59, fulcrumed at 60 on the bracket-arm 3 and extending under the roller 6| journaled on the screw 62 mounted on the presser-bar 56. It may also be raised by manipulation of the usual hand-operated cam-lever 63 fulcrumed at 64 on the head 4 and having its cam-portion 65 arranged to engage under and lift the extreme forward end of the lever 59 immediately below the roller stud 62.

The machine may be equipped with suitable guides to assist in directing the work to the perforating mechanism. In perforating the crowns of felt hats, for example, it is desirable to provide a throw-out guide 66 for engaging the brim 61 of the hat at its juncturer68 with the crown 69, to evenly space the initial row 10 of perforations from the base of the crown. The guide 66 is secured by the screw and slot expedient 66', Fig. l0, for vertical adjustment on the carrier 1| which is frictionally pivoted at 12 on the slotted arm 13 adjustable horizontally on the bracket 14 secured to the head 4 by screws 15. The` slot in the arm 13 is entered by the steady pin 16 and fastening screw 11. When not in use, the guide 66 may be shifted or swung to an out-ofthe-way position, as shown in Fig. 1.

To space the row of perforations being made from a preceding row,`an indicating guide 18 may be used. This guide is in the form of a blunt pointed down-turned nger which terminates alongside the presser-foot 54 and has its horizontal shank 19 secured in a block 80 mounted on the presser-bar 56 and adjustable vertically thereon; the shank 19 being horizontally and rotatively adjustable in the block 80.

The feed-dog 39, in its rising movement, lifts the work clear of the punch 22 and feeds it one step, whereupon the feed-dog drops below the work-support and the anvil descends to effect the cutting of a new hole; the feed-dog returning below the work to position for another rising and feeding movement.

'Ihe chips or punchings 21 discharged from the punch 22 fall within the end cap 8| into the chute 82 which leads downwardly and toward the standard l where the chips may be discharged into a suitable receptacle, not shown.

The punch 22 is readily removed for sharpening its cutting edge 23 by loosening the holding screw 34 and sliding the punch upwardly out of the socket 29 in its carrier block 39. The anvil 1 is easily removed for dressing its lower flat end face 24 by loosening the screw 8 and sliding the anvil downwardly out of its socket in the lower section 6 of-the anvil-bar.

The foregoing description of a preferred embodiment of the invention is to be read in a purely illustrative sense and not in limitation of the invention. The details of construction and relative arrangements of parts may obviously be variouslymodied by those skilled in the art within the spirit and scope of the invention as dened in the appended claims.

Having thus set forth the naturevof the invention, what I claim herein is:-

1. In a perforating machine, a work-support, a presser-foot above the work-support, a fourmotion feed-dog below the work-support, a punch below the work-support, and a reciprocatory anvil -mounted above the work-support and working in timed relation with said feed-dog.

2. In a perforating machine, a,VV work-support having a depression therein, a presser-foot above the work-support, a four-motion feed-dog below the work-support, a stationary punch projecting upwardly from the bottom of the depression in Vsaid, work-Support, and a reciprocatory anvil mounted above the work-support in position to engage said punch.

3. A perforating machine having a work-supporting block formed in its work-supporting face with a depression, a punch-element rising from the bottom of and within said depression, a feeddog having work-engaging teeth arranged to strip the work from the punch-element preparatory to feeding the work, and a reciprocatory anvil-element opposed to said punch-element.

4. A perforating machinehaving a frame including a bed and an overhanging bracket-arm, a reciprocatory anvil-bar comprising telescopically arranged sections, a spring interposed between said sections and housed within said bar, an anvil carried by said anvil-bar, a punch-element stationarily mounted in said bed, and a Vfour-motion feed-dog arranged to work closely

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