US71482A - Improvement in forging cutlery - Google Patents

Description

@peut me item1. @frn IMPROVEMENT Ill I'ORGING GUTLRY.

ein ttemle :etant tu it' tIgrse-ttttets gnant' mit making pitt uf the time.

TO ALL WHOM IT MAY CONCERN; i 4

Y Be it known that I, HOSEA B. HARVEY, of West Meriden, in the county of New Haven, and Stateof Connecticut, have invented anew Improvement inV Apparatus 'for Forging Cutlery; and Ido hereby declare the following, when taken in connection with the accompanying drawings, 4and'thc letters of reference lnarked thereon, to be a full, clear, ,and exact description of the same, and which said drawings constitute part of.this specification, and represent, 'ini i Figure 1, a. front view.

Figure 2, an end view.

Figure 3, a top view.

Figure 4, a transverse sectional View; and in Figures 5, 6, and 7, illustrations of the Work of the machine.

This invention relates to' an improvement in machinery for forging knives and forks, and particularly that class known as rivetedftha/tis to say, such asv have a broad tang and a divided handle, onehalf being 4placed upon each side of the tang, and the parts riveted together through the tang, the blank knife Ysuch as is shownl `in fig. 7; and tlieinvention consists in the. peculiar formation or construction ofrolls, whereby the material introduced is drawn to precisely the form desired, so that all the blanks operatediupon b'y the rolls are alike, and perfect inrevery particular; also, in combining with the said rolls an automatic feeding-device, which will,

at the'proper time,vintroduce material to be drawn.

In order to the clear understanding `of my invention, as well as to enable others to construct and use the same, I will proceed to a description thereof, illustrated in the accompanying drawings.

is the bed-plate, freni which rise two uprights B B, supporting the operative mechanism of the machine. i

C is the lower roll, and I) the upper roll, 'each arranged in its proper bearing C and D', the upper bearings adjust-ed by screws E in the usual manner for press-rolls. The faec'of cach roll has, at' a given-point upon its surface, a portion cut away, as seen at a, 4, so that, the two rolls revolving, the space cut away is formed so as to draw the material to the proper forni, beginning thin .at one end, say the point, and increasing in thicki i ness to the tang, then diminishing-to the heel; and the said space is made concave longitudinally, as seen in sections a, figs. 1 and 2, so that, dividing the blank after it has been rolled longitudinally, the outer edges are thin, for theV edge of the knife, while the centre is thick, for the back of it, as, in iig. 5 is represented the material cut to the proper length from a bar of steel, to form the blank, als seen -in fig. 6. This material (iig. 5)

isat the proper time (that is, when the two ends of the recess cutin the rolls meet) inserted, and-thc `rolls continuing toV revel-ve, draw out the material to form the blank, as seen in ig.- 6', a transverse section of `which is denoted in heavy black. Then, under properly-prepared dies, the blankin iig. 6 is divided, and twoknife` blades formed, as seen in fig. 7. Thus the blades are drawn all alike, even, truc, and perfect, which cannotbe done by the common devices for forging cutlery.' l i y' In manufactories, generally, dependence is had upon the process of grinding tcjreducc `and equalize the blades but coming from rolls thus formed, the blades are so alike and perfect as to leave vcrylittle for th l grindstone to do, thus saving a largo percentage in the cost of manufacture.` i p p 4 The spaces formed in the rolls, as before described, are formed by turning into the chilled roll, in a lathe constructed and arranged for the purpose, so that it is no more labor to turn or form the space than turningan ordinary cylindrical roll. More than one space may be formed in thc circumference of the roll, so that the blanksniay b'e introducedto each pair of spaces; and the number of spaces in the length of the roll depends only upon the length of thc'roll.

` s it is important and necessary that the material should be introduced at thc proper time, I williproeeed to describe the automatic feeding'devcc, which I have combined withV the said rolls, for so introducing the y material.

`.I represent the arrangement as for feeding tw'o blanks at the same time.A is a shaft,arranged across the front of the rn.'i,chine,'inY proper bearings, from which "extends upwards a. lever, I, and freni which a rod, K, entends1 `across the cnd of the machine into a guide, M, so as to be depressed, as from the position in black toV that denoted in red, fig. 2, andtis .so depressed by an arm, N, on a shaft, l?, the said shaft boing turnedby .Set forth.

hand-lever, R, as from the position in black tothat in red, fig. 2. On the rod K Vi's xed a trip, S, (see iig. 2,) and on the shaft of thecylinder C isxed a cam, T, so that whenl the bar is depressed, as denoted in red, the revolving cam will strike the trip S, and draw forward the lever I to the position in red, iig. 4, or until the caux escapeslfrom the trip. The said bar K is held up, when free, by. a spring, U, or other device, and a weight, W, on the'shaft H, or other device, serves to dra-vw hackthe level` I when. freed from the actiou'of the c ain.` From the shaft H arms I1 and I2 extend up, corresponding to the arm I-before referred to, und from each of which a connectiug-rod, 0l, extends inward to a slide, ,(sceiigs. 3and4,) arranged in proper guidesf, so as to mme forward in the said guides from the position in blackl to thatdenoted in red, g. 4; and the said slides are arranged in line with one'of'the spaces a, cut from the surface ofthe cylinder; and the cam T is arranged so that when `the corresponding spaces upon the two rolls are in the proper position, the said slide will, by the action of the cam upon the trip, lmove quickly inward toward the rolls.

The blank, as in iig. 5, is laid upon the guides, betweeif the slide and the rolls. Then the operator, with his hand upon the lever R, depresses the rod `K, as denoted in red, Eg. 2,-so that at the proper time th'e'eam'T will strike the t1'i,p,and throw the blank between the rolls when they have arrived at precisely the right position to receive the blank;y The blank, having been previously heated, is drawn between the rolls, and passes outV over the conductor'X finished and complete, as in iig. G, from whence it is taken to the dies, and cut into the proper form, as before described, whether for blades orforks.

Two vor more slides may be arranged, according to the length of the rolls, to operatesiinultaneously; and when, from constant wear in one place, or tro produce a. different forni, it may be desirable to insert the blanks at a diiferent point, the said guides, with their respective slides, are adjusted to such points upon the bar n. Thus, lseveral forms may be produced from the same rolls by simply adjusting the feed to the required point.

' Having" thus fully described my invention, what I-,olaim as new and useful, and desire to secure by Letters Patent, is-r- 1. The combination ofthe two rolls C and D, each having a recess or die formed in its face, the one corresponding 'to the other, and arranged so as to receive and fornrthe blank for cutlery, substantially as herein 2. In4 combination with the above, I-clairu an automatic feeding-device, constructed and arranged substantially as described, so as to introduce the blanks to the rolls at the proper time.

H. B. HARVEY, Witnesses:

JOHN E. Esami, A. J. T'IBBITs.

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