US566185A

US566185A - Machine

Info

Publication number: US566185A
Authority: US
Publication date: 1896-08-18
Anticipated expiration: 1913-08-18

Description

" (N0 Model.) A 2 angers-$11661; 14.

H. C. JONES. -MULTIPLE PUNGHING MACHINE.-

No. 566,185l Patented Aug. 18, 1896.

'(No Model.) 2 Sheets-Sheet 2.

- H. C. J UNI-5S. MULTIPLE PUNGHING MACHINE.

No. 566,185. Patented Aug. 18, 1896.

Invent-02: Henry 6. Jne

UNITED STATES PATENT OFFICE.

HENRY O. JONES, OF IVILMINGTON, DELAIVARE, ASSIGNOR TO THE HILLES & JONES COMPANY, OF SAME PLACE.

MULTIPLE PUNCHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent N0. 566,185, dated August 18, 1896.

Application filed December 3, 1895. Serial No. 570,925. (No model.)

To @ZZ whom, zit may concern:

Be it known that I, HENRY O. JONES, a citi- Zen of the United States, and a resident of IVilmington, Delaware, have invented certain Improvements in M ultiple Punching-Machines, of which the following is a specifica tion.

One object of my invention is to so construct a multiple punch as to provide for the successive action of the punches without the necessity of making the punches themselves of different lengths, a further object being to provide effective stripping mechanism .for

Y steel similar to the punches.

clearing the plate from the punches as the latter rise. These objects I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of a multiple punchingpress constructed in accordance with my invention. Fig. 2 is a transverse section of part of the same on an enlarged scale. Fig. 3 is a side view, partly in section, of the punch-bar and its punches. Fig. 3a is an enlarged view of one of said punches, and Figs. 4, 5, 6, and 7 are views illustrating modifications of the invention.

The fixed frame 1 of the machine has bearings for a shaft 2, provided with the usual eccentrics 3, whereby a vertical reciprocating motion is imparted to the sliding cross-head 4, the latter being suitably guided at its ends in vertical ways on the fixed frame of the machine.

The punch-bar 5, Fig. 2, is adapted to undercut ribs 6 and 7 on the under side of the sliding cross-head 4, the rib 7 being by preference detachable, or at least capable of be# ing loosened, so as to permit of the withdrawal of the punch-bar 5. In the back of the punchbar 5 is formed a groove tapering from one end of the bar to the other, the openings in the punch-bar for the reception of the punches 8 communicating at their upper ends with this groove, which is adapted for the reception of a tapering or wedge-shaped locking and bearing bar 9, preferably of hardened Each opening for the reception of a punch is enlarged in diameter at its inner end, and each punch consists of the lower or punching portion of contracted diameter, a stem of larger diameter above the same, and a head preferably rounded on the top, as shown in Fig. 3a, the

' stem fitting snugly in the lower portion of the opening in the punch-bar and the head ittin g into the enlarged upper end of the opening, the rounded top of the head bearing against the under side of the tapering bar 9. means all of the punches employed can be made exactly alike, and yet, when applied to the punch-bar, will project therefrom to a greater and greater extent from one end of the punch-harto the other, so as to provide for a progressive or successive punching action, only a few of the punches being subjected to strain at one time, so that the machine can be operated with a minimum of power.

By using punches all of which are exactly alike changes can be quickly made when any of the punches are broken, as there is no ne- By this cessity of selecting from a number of punches for the punches and firmly locks them in place in the punch-bar.

On the shaft 2 are cams 10, which act upon antifriction-rollers 11, carried by cross-heads 12, as shown in Fig. 2, these cross-heads being carried by vertical rods 13, which are guided in lugs 14 on the upper cross-bar of the fixed frame of the machine, and at their upper ends are secured to cross-heads15, the latter being connected Vby links 16 to counterweighted levers 1'7, which tend to raise the cross-heads and maintain the antifrictionrollers 11 constantly in contact with the cams 10.

The lower cross-head 12 is not rigidly connected to its rods 13, but can, under certain conditions, slide downwardly thereon, said cross-head being supported upon coiled springs 18, interposed between the cross-head and adjusting-nuts 19, adapted to threaded portions of the rods 13 and secured in position after adjustment by means of lock-nuts 20.

The lower ends of the rods13 on each side of the machine are secured to slides 21, suit ably guided on the sliding crosshead 4, and each of these slides has at the lower end. a flange 22, to which is secured a ange 23 upon the stripperbar or plate 24, the latter having inwardly and downwardly projecting lingers 25, which project inward as closely as possible to the punches.

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lVhen the punches are acting to form the holes in the plate, the stripper-bars occupy the elevated position shown in Fig. 2; but just before the punches rise said stripper-bars are depressed by the action of the cams 10, so as to bear iirmly upon the plate and prevent the same from being lifted with the punches as the latter are withdrawn. The stripper-bars are so disposed in respect to the cams l0 that when depressed by the latter they will clamp the thinnest plate which is likely to be subjected to the action of the machine, and when thicker or heavier plates are being punched the cross-head l2 will, after the stripper-fingers come into contact with the plate, continue to move downward and will compress the springs 18, the latter being stiff enough to insure the proper holding of the plate down upon the punching-bed when the punches are being withdrawn.

Although I prefer, in carrying out my invention, to use a single tapered bar 9 in coninection with the punch-bar and its punches, my invention is not limited thereto, as more than one of such tapered bars may be used, ifdesired. For instance, there may be two bars tapered in opposite directions and adapted to be introduced from opposite ends of the punch-bar, as shown, for instance, at i)u in Fig. 4,01' a special plug, such, for instance, as shown at 91 in Fig. may serve as the backing for each punch-bar, these plugs being of varying lengths. On the other hand, the tapered locking and bearing bar or bars may in some cases be dispensed with altogether, the punches 8 being such as to eX- tend completely through to the inner face of the punch-bar 5, as shown in Fig. 6, for instance, the back of said punch-bar and the seat therefor on the under side of the crosshead 4E being tapered, so as to effect the desired differential projection of the punches from the lower face of the punch-bar.

Although the form of punch shown in Figs. l to G is preferred, it is not absolutely essential to the proper carrying out of my invention, as punches having tapered stems or shanks, such, for instance, as shown at 8 in Fig. 7, may take the place of the abruptly-shouldered punches, the openin gs in the punch-bar 5c being correspondingly tapered for the reception of these punches. In all cases, however, the punch-supportin g portions of the bar, whether tapered or abrupt, occupy different relations to a common horizontal line, so that there will be a corresponding different relation of the punches in order to insure the desired progressive or successive action of the latter. This difference of relation need not, however, exten d to individual punches. For instance, two, three, or more adjoining punches may occupy the same relation to the common horizontal line and may act simultaneously, the

wedge-bar in this case being properly stepped instead of presenting a continuous inclined face.

Having thus described my invention, I

claim and desire to secure by Letters Patentl. A multiple punch in which a series of punches of the same length are combined with a punch bar or carrier having punch-receiving openings or sockets with punch-support ing portions for preventing the dropping of the punches from the bar, but permitting the removal of the same rearwardly, and a backing for said punches presenting punch-bearings which occupy different relations to a common horizontal line, whereby successive or progressive action of the punches is effected, substantially as specified.

2. A multiple punch in which a series of punches of the same length are combined with a punch bar or carrier, having punch-receiving openings or sockets with punch-supporting portions for preventing the dropping of the punches from the bar, but permitting the removal of the same rearwardly, and means interposed between the punches and the slide which carries the punch-bar and serving to provide bearings for said punches occupying different relations to a common horizontal line, substantially as specified.

3 Av multiple punch in which a series of punches of the same length are combined with a punch bar or carrier having punch-receiving openings or sockets, with punch-support ing portions for preventing the dropping of the punches from the bar, but permitting the removal of the same rearwardly, and one or more wedge-bars forming a bearing for the heads of the punches, said bearing being inclined in respect to the horizontal, substantially as speciiied.

4. The combination of the reciprocating cross-head and its punches, a stripper-slide guided so as to move vertically in the frame of the machine, a rod projecting upwardly from said slide, a cross-head mounted on said rod and having its upper bearing against a shoulder thereon, a spring interposed between the under side of said cross-head and a nut on the rod, and a cam acting on the crosshead to depress the same, substantially as specified.

5. The combination of the sliding crosshead and its pun ches,a stripper-slide mounted so as to move vertically in the frame of the machine, a rod projecting upward from said slide, means for exerting a constant upward tension upon said rod, a cross-head mounted on the rod and having its upper bearing against a shoulder thereon, a spring interposed between the under side of said crosshead and a nut on the rod, and a cam for depressing said cross-head, substantially as specified.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.

HENRY C. JONES.

ll'fitnesscs:

Jos. ll. KLEIN, FRANK BEcHToLD.

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