US949807A - Press. - Google Patents

Description

W. G. NYMON. PRESS. APPLICATION FILED JULY 28,1909.

949,807. Patented Feb,22,1910. a sums-sum 1.

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' W. G. NYMON.

PRESS.

APBLIGATION FILED JULY 28, 1909.

Patented Feb. 910.

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W. G. NYMON.

PRESS. APPLICATION FILED JULY 28, 1909.

Patented Feb. 22, 1910.

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Witnesses atto'ouma S WIGO G. NYMON, 0F ARGUSVILLE, NORTH DAKOTA.

PRESS.

Specification of Letters Patent.

Application filed July 28, 1909.

Patented Feb. 22, 1910. Serial No. 510,061.

To all whom it may concern:

Be it known that I, WIGO G. NYMoN, a citizen of the United States, residing at Argusville, in the county of Cass, State of North Dakota, have invented certain new and useful Improvements in Presses; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in presses and more particularly to the kind employed for punching holes in metal.

One object is the provision of a construction wherein a vertical pressure is exerted on the upper end of the punch throughout the downward movement of the latter, thus reducing the tendency of the same to bend which frequently happens in devices of this kind wherein a lever is employed to exert the pressure on the punch, the downward movement of the lever causing a lateral strain on the punch.

Another object is the provision of an im proved form ofdie which can be adjusted into alinement with the punch.

A further object is the provision of a means for gripping the upper end of the punch and holding it so that the punch may be readily disengaged from the opening which it forms in the metal.

With these and other objects in view as will more fully hereinafter appear, the pres ent invention consists in certain novel details of construction and arrangement of parts, hereinafter fully described, illustrated in the accompanying drawings and more particularly pointed out in the appended claims; it being understood that various changes in the form, proportion, size and minor details of the device may be made without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings forming part of the specification :Figure 1 is a side elevation of the device. Fig. 2 is a front View thereof. Fig. 3 is a longitudinal sectional View of the device. Fig. 4 is a sectional plan view onthe line 4.& of Fig. 1. Fig. 5 is a sectional plan View on the line 55 of Fig. 1. Fig. 6 is a similar View on the line 66 of Fig. 1. Fig. 7 is a similar view on the line 77 of Fig. 1. Fig. 8 is a similar View on the line 88 of Fig. 1.

Similar numerals of reference are employed to designate corresponding parts throughout.

The supporting frame is designated in general by the numeral 5 and is preferably formed of metal having a vertical side 7 which is oblong in contour and rectangular in cross section and of any desired length. The upper end of the side 7 is provided with a cross piece 8 by means of which the side is secured to the wall or other support. Extending forwardly from the lower end of the side 7 is a lower end piece 8, from the outer end of which depend the supporting legs 9 and 10. The upper end of the side 7 is provided with an upper end piece 11 corresponding in length to the lower end piece 8 and lying in a vertical plane with the latter. The intermediate portions of the end pieces 8 and 11 are on their opposed inner faces provided with boxings 12 and 13, and journaled in these boxings are the opposite ends of a shaft 14.

By referring now to the drawings it will be seen that adjustably secured to the shaft 14 are a plurality of disks 15. These mem bers are arranged in spaced relation on the shaft 14 and on one of their faces are provided with integral collars 16 which encircle the shaft, said collars having radial openings which are screw threaded and receive the set screws 17 by means of which the disks are adjustably secured to the shaft. The lower of these disks is arranged at a point adjacent the lower end of the shaft and arranged on the inner face of the lower end 8 and at the extremity thereof is a bed-plate 18 which bears on the lower face of the lowermost disk. The lowermost disk is provided, adjacent its periphery, with a plurality of spaced openings 19 and arranged on the upper face of the disk and over the openings are dies 20. The latter are preferably formed of cast steel or the like and are oblong in contour and substantially rectangular in cross section and at their centers are provided with openings 21, which are adapted to aline with the openings 19 of the lower disk. One end portion of the dies is provided with an orifice which receives a suitable pivot pin 22, while the opposite end portion of the dies is provided with elongated slots 23. The slots 23 receive the threaded shanks of upwardly extending bolts secured to the upper face of the lower disk, the bolts having winged nuts, which are adapted to be turned so as to bear on the upper faces of the dies and secure the latter in any of their adjusted positions, it being understood that the dies may be adjusted, by virtue of the slots 23 to either side of the openings 19. The lower disk is peripherally provided with a plurality of spaced notches 24: which are in alinement with the openings 19 and openings 21 of the dies, and formed in the outer end of the bed-plate 18 is a vertical recess 25, in which is pivoted a catch 26. The catch 26 is spring pressed so that its upper end normally extends through the recess and bears on the periphery of the lower disk so that when the latter is turned and one of the notches 24 comes to a point in alinement with the upper end of the catch 26, the said upper end will be forced into the catch 24: and prevent further movement of the disk. The upper disk is arranged at a point a trifle above the middle of the shaft let, and adjacent its periphery is provided with a plurality of spaced openings 27, which are in direct alinement with the openings 19 of the lower disk. The intermediate disk is arranged between the upper and lower disks and is provided, adjacent its periphery, with a plurality of openings 28, which are arranged in direct alinement with the openings of the upper and lower disks.

Slidingly fitted in the openings of the upper and intermediate disks are what will subsequently be termed punches. These members are designated in general by the numeral 29 and since they are identical in structure a description of one will be sufficient. By referring now to the drawings it will be seen that the upper end of each punch is provided with a head 30, while its lower end is provided with an elongated nose 31 of a diameter to nicely fit in the opening 21 of the die. It might here be stated, that the openings of the dies will be of different diameters according to the size of the opening desired to be formed in the middle and so also will the nose 31 correspond in size to the openings of the dies. The length of each punch is somewhat greater than the distance between the upper face of the lower disk and upper face of the upper disk and in order that the nose on each punch will be held spaced from the lower disk the following construction is employed :Each of the punches is lifted until the upper end of the nose 31 is in a plane with the lower face of the intermediate disk. This will provide a. space between the lower end of the nose and die sufficient to permit the metal to be inserted between the nose and the die. When the parts are in this position a transverse opening is formed in the body of the punch at a point a trifle below the lower face of the upper disk, and fitted in this opening is a pin 32, the opposite ends of which bear on the lower face of the uppermost disk and limit the upward movementof the punch.

A metallic washer 33 is placed over that portion of the punch between the upper and intermediate disks and one of its flat surfaces is brought to bear on the pin and encircling that portion of the punch between the upper and intermediate disks is a helical spring 3a, the opposite terminals of which bear on the lower face of the washer and upper face of the lowermost disk. \Vit-h this construction it is obvious that the spring will yieldingly hold the lower end of the nose elevated above the die 20.

In order that a vertical pressure may be exerted on the punch throughout its downward movement and a means provided for disengaging the nose from the metal in which it forms an opening, the following construction is employed :By referring now to Fig. 1, it will be seen that extending laterally from the outer face of the side 7 and adjacent the end 11 is a. perforated lug 35 and pivoted to this lug is one end of a guide arm 36, the said pivoted ends of the guide arm being provided with a recess which receives the lug 35 and having alining openings which register with the openings of the lug, the said openings receiving a pivot pin 37. The intermediate portion of the guide arm 36 is provided with an annular opening 38 whichloosely receives the shaft 14. The outer or free end of the guide arm 36 extends to a point in a vertical plane with the periphery of the disks and formed adjacent the free end of the guide arm is a vertical opening 39, which receives the shank 40 of a socket. The head ll of the socket extends to a point below the plane of the head 30 of the punch and is provided with an opening to receive the said head 30, and formed in the outer end of the guide bar 38 is an inwardly extending recess 41, in which is pivoted a dog 43. The outer end of the head 41 is provided with a recess which communicates with the opening of the head and projecting into this recess and into the opening of the head is the lower end of the dog 4:3. The inner face of the said lower end of the dog 43 is provided with an engaging tooth 4:4: which is adapted, when the head 30 is disposed in the socket, to engage with the lower side of the head and prevent outward movement of the latter from the socket. The dog t3 is yieldingly held within the recess and opening of the head 4-1 by means of a leaf spring 45, one terminal of which bears on the inner face of the upper end portion of the dog, while the opposite terminal bears on the outer side of the shank 4.0 of the socket, to which it is secured.

The outer end of the upper side 11 is provicled with a lug 45, the outer end of which is disposed in a vertical plane with the socket, or substantially so, and pivoted to the inner end of the lug 45 is one end of an operating lever 4L6. The pivoted end of the lever 46 is provided with a recess which receives the lug 45 and has alining openings which register with an opening in the lug, the said openings receiving a pivot pin a7. Pivoted within the recess of the operating lever and in advance of the lug 45 is one end of a link 48, the opposite end of which is recessed and receives the upper end of the shank 40 of the socket to which it is pivoted by means of a pivot bolt 49. Thus it will be seen when the head 30 of one of the punches is inserted into the socket and engaged by the tooth 44 of the dog by depressing the lever %6 will move the link 48 and guide arm 30 downward, the latter carrying with it the socket and this downward movement of the socket will force the punch downward against the action of its spring until the nose 31 enters the opening 21 of the die. It will be observed that during the downward movement of the punch the force which causes it to descend will, by virtue of the link 48, and guide arm 38, be eX- erted vertically downward, whereby lateral strain on the punch will be eliminated and the tendency of the punch to bend removed. It will be observed that after the nose of the punch has been forced through the metal and the operating arm moved upward the punch will likewise move upward, by virtue of its head being in engagement with the teeth 4% of the dog.

In order that the metal operated upon may be prevented from moving upward with the punch a plurality of clearers 50 are employed. Each of these members is preferably formed of a single piece of sheet metal bent to substantially a U shape and fixedly secured to the lower face of the lower disk. Each clearer is centrally provided with an opening to receive the nose 31 of the punch and the space between the lower end of the clearer and upper face of the die corresponds to the thickness of the metal to be operated upon, or substantially so. It might here be stated, that the bedplate 18 is provided with an opening which is adapted to aline with the openings of the lower disk and dies and through which the plugs punched from the metal fall.

From the foregoing it can be seen that I have provided a device which is comparatively simple in structure and inexpensive to manufacture, embodying few parts and these so arranged that the danger of derangement will be reduced to a minimum.

What is claimed as new, is

1. A punching machine comprising a supporting frame, a shaft journaled in said supporting frame, a plurality of spaced disks fixedly secured in said shaft, said disks being provided with alining openings and the lowermost of said disks being provided with an adjustable die, a reciprocating punch mounted in the remainder of said disks and yieldingly held above said dies, mechanism for moving the lower end of said punch into and out of the die and means carried by the frame to engage the lowermost of said disks and hold the same stationary during the movement of the punch into and out of the die.

2. In a punching machine, a supporting frame, a reciprocating punch provided at one end with a head, a guide arm having one end pivoted to the supporting frame and its opposite end provided with a socket to receive the head and a pivoted member extending into the opening of the socket and having a tooth to engage with the lower side of the head and serving to secure the head within the socket.

3. In a punching machine, a supporting frame, a reciprocating punch, a guide arm having one end pivoted to the frame, and its opposite end provided with a socket to receive the head, an operating lever pivoted to the frame and a link having its opposite ends pivoted to the operating lever and one end of said socket.

4. In a punching machine, a supporting frame, a reciprocating punch provided at one end with a head, a guide arm having one end pivoted to the frame and its opposite end provided with a socket to receive the head, an operating member pivoted to the guide arm and having an engaging tooth to enter the socket and bear on the lower side of the head, an operating lever pivoted to the frame and a link having its opposite ends pivoted to the operating lever and upper end of the socket.

In testimony whereof, I afiEiX my signature, in presence of two witnesses.

WIGO Gr. NYMON.

Witnesses:

FRED OBERG, ALICE M. WERNER.

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