US207367A - Improvement - Google Patents

Description

2 Sheets-Sheet, 1,

J. PEDDER. Machine for Rolling Hoes, Picks, 850.

No 207,367. Patented Aug. 27,1878.

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J. PEDDER. Machine for Rolling Hoes, Picks. 820.

No. 207,367. Patented Aug. 27,1878.

Wide $88K: $1, 01:-

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JOHN PEDDER, 0F BEAVER FALLS, PENNSYLVALIA.

IMPROVEMENT lN MACHINES FOR ROLLING HOES. PICKS, &.C.

Specification forming part of Letters Patent No. 207,367, dated August 27, 1878; application filed August 7, 1878.

Falls, in the county of Beaver and State of- Pennsylvania, have invented a new and useful Improvement in Machines for Rolling Hoes, Picks, and other Articles; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawing, forming part of this specification, in which' Figure 1 is an elevation of devices embodyin g my invention. Fig. 2 is a longitudinalsec tion of the same. Fig. 3 is a sectional view of dies adapted to the formation of picks. Figs. 4 and 5 are similar views of dies for forming bolsters on knife or fork blanks. Figs. 6, 7, and S are views of a few of the many articles capable of being produced with suitable dies.

Like letters refer to like parts wherever they occur.

My invention relates to the construction and operation of rolls for producing various shapes-such as solid-eye hoes, high-eye picks, knife and fork blanks with bolsters and solid handles, and many other forms well known to the 1llLl'i1l-WO1kCl', and now usually forged or formed in drop-dies.

To this end my invention consists, first, in combining with a pair of rolls a movable or piston die or dies capable of being operated through the roll or rolls and during the operation of the rolls, whereby specific and irregir lar forms having projections or cavities may be readily rolled without hindera-nce or limitation from the draftof the rolls.

Heretofore in the manufacture of solid-eye hoessuch as planters hoes high-eye picks, knife and fork blanks with bolsters, and numerous other articles of irregular form where thick projections or deep cavities were desired, either iorging or the use of drop-dies has been commonly resorted to, because the article could be formed either in its finished shape or so near thereto as to require the minimum of subsequent labor to complete it. tolls have been but little used, because the draft of the rolls limited the depth of cavity or height of projection that could be formed in or on the metal rolled, and the blank produced bythe rolls required more labor to finish it than one produced by forging or drop dies, so that what was gained in power and speed by use of rolls was fre quently offset by the linishin g process.

Thus far inventors have mai 111 y confined their attention to devising forms and shapes capzr ble of being produced by rolling, and which could be subsequently finished by the minimum of labor; but my present invention is directed to such modification ot' the rolls as will give the combined advantages of both rolls and drop-dies.

1 will now proceed to dcscribemy invention, so that others skilled in the art to which it uppertains may apply the same.

In the drawing, A indicates a bed, upon which are erected suitable housings 1 '15 for he rolls 0 D. The rolls 0 D should be geared to move together either by segments E 1 or equivalent devices; and the opposite jour nals of the rolls may be provided, if desired, with disk-rolls G ll for any appropriate use. Vhere necessary, the usual housing-screws (not shown) for adjusting the rolls will be employed.

lhe faces of rolls 0 D may be constructed to receive fixed dies 0 (l, keyed thereto in the usual manner; or the face of the roll may be itself shaped to the desired form, which, in every instance, will be such part of the entire shape as can readily be produced by rolling.

In the rolls 0 D are arranged movable piston-dies c f, whose faces will correspond to such portions of the article to be formed cannot be rolled to advantage. These pistondics 0 and f may be, and preferably are, oper ated by screws 9 and h, which pass through the rolls; and in order to avoid the turning of the die or other movement which might have a tendency to distort the metal, the screw is made separate from and independent of the die, though in case of the upper die (and some times in case of the lower die also) it will. be necessary to arrange a swivel-connection, so that the screw shall be capable of retracting the die. I

1' indicates a lever secured to the screw of the upper roll, and proieetin g therefrom so as to strike a post or projection, 7:, on the housin g, whereby the screw is partly rotated and the piston-die retracted. The same or equivzn lent means can, when desired, be applied to the screw controlling the piston-die of the lower roll.

In Figs. 1. and 2 of the drawing are shown dies for rolling solid-eye or planters hoes, the dies 0 (I having the necessary shape to taper the blade (in one or bothdirections) and term a bead thereon, while the piston-dies of are adapted to set up the .solid eye. I will therefore describe the operation of the machime in the formation of a hoe-blank.

lower having been applied to the rolls, and a bar of suitable size having been properly heated, the lever i is pulled forward, so as to turn the screw and project the piston-die ethe desired distance. The heated bar is then insorted between the rolls, and as the rolls move the piston-die c forces the metal into the cavity of f. The lever '1', coming in contact with post 7; as the rolls continue to turn, reverses the screw and retracts the piston-die, permit-' ting the blank to clear the rolls without distortion. The dies 0 (I taper the blade of the hoe and form a bead thereon, and as the housi n g-serews are operated to set down the rolls said dies rapidly form and finish the blank.

ln order to square up the shoulder or eye of the hoe, the piston-die 7" may be raised somewhat at the instant (or after) the piston-die c has been retracted. This will lift the cup slightly out of the cavity of f, and the further action of the rolls will upset the stock and insure a full and perfect eye.

The operation of the machine will be the dies shown in Figs. 1 and 2.

I am aware that a piston punch or swage has been combined with a hollow roll, and

actuated by cam mechanism within the roll,

and used in conjunction with a counter-die, and do notgherein claim the same; but,

Having thus set forth the nature, object, and advantage of my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, with a pair of rolls, of a piston or swaging die and a fixed die located in the same roll, and whose combined faces constitute the form to be produced, the piston or sw'aging die working transversely through the roll, and having part or parts of the form substantially as specified, said piston die also adapted to be partially or entirely retracted during the operation ofthe rolls, substantially as and for the purpose specified.

2. The combination, with a pair of rolls, of a piston or swagin g die or dies working transversely through the roll, and adapted by mechanism, substantially as described, to be entirely or partially projected and retracted, substantially as and for the purpose specified.

In testimony whereof I, the said JOHN PED- DER, have hereunto set my hand.

JOHN PEDDER. Witnesses 0 JAMES H. PORTE, H. A. LEON TRAMSET.

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