US15001A - Improvement in nut-m ach i nes - Google Patents

Description

UNITED @STATES FATENT Ormea.

RICHARD II. COLE, OF ST. LOUIS, MISSOURI.

HVIPROVENIENT IN NUT=IVIACHINES.

Specification forming part of Letters Patent No. 15.00B, dated June 3, 1856.

To aZZ whom it may concern:

Beit known that I, RICHARD l-I. COLE, of the city and county of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in the Machines Employed in the ltIanufaeture of Metallic Nuts from Heated Bars; and I do hereby declare that the following is 'a full andexact description thereof, reference being had to the accompanying drawings making a part of this specification.

Figure l is a side elevation oi' the aforesaid machine; Fig. 2, an end view of the same; Fig. 3, atop View; Fig. 4, a horizontal section in the line l l of Fig. l; Fig. 5, a vertical lougitudinal section in the line 3 3 of Fig. 4; Figs. 6 and 7, vertical sections of detached portions of the machine in the line 2 2 of Fig. 4; Fig. S, a' transverse section of a detached portion of the machine in the line 5 5 of Fig. 5; Fig. 9, a transverse section of a detached portion of the machine in the line 4 4 of Fig. 5; Fig. l0, a vertical longitudinal section of a portion of the machine in the line l l of Fig. l., showing the parts represented as having just formed a nut in the nut-box; and Fig. 11 is a front view of the nut-box` detached from the machine.

My first improvement in metallic nut-making machines consists in the arrangement ofa round punch, f', within an aperture in the angular punch d at the same time that a round punch, e, is arranged within an aperture in the bottom j of the nut-box, when the said round punches are combined withY movements which cause them to actjointlyin perforating the holes in the nuts, substantially in the manner hereinafter set forth.

My second improvement consists in the joint arrangement of the angular punch (l and its interior round punch, /",With the bottom j of the nut-boX and itsinterior round punch, e, when the said bottom of the nut-box is combined with a spring or its equivalent in such a manner in relation to the before-mentioned parts that the action of the said parts in forming a nut will cause the completed nut to be thicker than the bar from which the blank was cut, substantially as hereinafter set forth.

The box in which the nuts are formed in my said machine may be constructed in any manner that may be deemed expedient. It should be so constructed as to have a cutting-angle on the front side of its mouth,for thepurpose ofenabling a blank for a nut to be cut from a bar by thejoint action of the said cutting-angle and the front angle of the angular punch d as it is carried forward toward the nut-box and is brought in contact with the bar fed into the machine immediately in front of said box. The projections t o from the top, and farther side of the mouth of the nut-box, in connection with the adjustable rest g, enable the operator to aecurately guide the end of the bar to the proper position in front of the nut-box as itis fed into the machine.

The angular punch d is received into a mouth in the head of the sliding plate G, Where it is held in front by the clampmaud the set-serews g g, and at its top, bottom, and rear sides by set-screws which pass through the top, bottom, and rear side of the said mouth, as shown in Fig. 9. The inner end of the body of the angular punch d bears against the Wedge?, which works in a vertical opening in the head of G, and has a screw-shank at its upper eX- tremity, on which works the regulating-uut k.

By means of the lateral and vertical setscrews z zgg and the adjustable wedge y the angular punch d can be moved out or in and may be adjusted in any desired position. The requisite movements are imparted to the angular punch d by means of two differentlyshaped cams, a and p, on the shaft K, which Work within a doubly-recessed opening in the plate G, whose Working-faces are of such a shape that the former cam serves to move said plate rearward and the latter to move the plate forward and to retain it in its extreme forward position for a few seconds.

A round punch, f', works in a correspondingly-shaped aperture in the center of the angular punch d, and is connected to a projection, s, from the rear sliding plate, B, which passes through a slot in the front sliding plate, G, as represented in Figs. 4 and 5. The rear end of the round punch f bears against the horizontal Wedge i', which is adjusted in its position by means of the screw-nut qworking on a screw-shank projecting from the smaller end of said Wedge, as shown in Fig. 4. The head of the said round punch f is secured within the projection s by means of the thin plates t and n,working in a transverse slot in s, the screw-shank u' projecting from n and t-he nut a, as represented in Fig. 8. The proper reciprocating movements are imparted to the round punch f by means of the cam 0, placed on the shaft K immediately within the cam p and working in an aperture in the plate B, the shape of which aperture,and also of the cam o, being shown in Fig. 6.

The punch d is of such a size and is so arranged that after cutting off a blank for a nut in front of the nut-box it enters the nutboX, carrying the said blank before it, and compresses it with such force against the bottom 7' of the nut-boX as to give it the exact shape that may be desired.

To insure perfectly-formed nuts in all cases when the bars from which they may be cut may be thinner than usual, and also to prevont injury to the machine when a thicker bar than usual is fed into the machine, or when two nuts chalice to get into the nut-boX at the same time,l give an elastic bearing to the bottomj of the nut-boX by causing the outer end of the sliding plate F to bear against the spring A at thc timethtanutis being formed.

The projecting .portion of the bottom j of thenutbox is secured between outwardly-projectingjaws from the inner end of the sliding plate H by means ofthe keys t' i, the clamp t', Fig. 4, and the set-screws fl" and c, or in any other suitable manner. The bottom j of the nut-box is thrown forward to discharge a iinished nut and then drawn back again preparatory to forming another nut by means of the cam c on the shaft J, which works in an oblong rectangular openingin the sliding plate H, as represented in Fig. 7.

A round punch, e, works in a correspond ingly-shaped aperture in the centerof the bottom j of the nutbOX. The head of the said round punch e is secured between projections from the front side of the inner end of the sliding plate F by means of the clamp w, the tapering key b', and the set-screws w', as repre sented in Figs. 1 and 5, or in any other suitable manner. The tapering key b passes through an oblong mortise in the head of the round punch e, and a setscrew, f, is inserted into a screw-aperture in the end of the said head and bears against the outer edge of the said key b', by means of which arrangement the round'punch c can be thrown in or ont and secured in any desired position.

The necessary reciprocating movements are imparted to the round punch e during the performance of the machine by means ot' the two cims a and b on the shaft J, working in a recessed opening in the sliding plate F, in the manner hereinafter set forth.

A suitable form for the metallic frame of my improved nut-making machine is represented in the accompanying drawings and designated by the letters NR R Q Q. The respective pairs of sliding plates GB and F H are secured within shouldered recesses in the vertical portionsR R of the frame of the machine by means of the series of inner beveledged bearers, vc, Fig. 4E, and the series of outer bevel-edged bearers,F F and G G,and a suitable number of set-screws, a a a a, a portion of which set-screws pass through the said bearers and are tapped into the said portions R R ot' the frame of the machine, and the remainder pass through the projections from the said portions of the frame above and below the sliding plates B G and F H and act against the outer edges of the bearers F F G G n e',- or the said sliding plates may be supported in proper positions in any other suitable manner.

The shafts J K work in suitable bearings and are rotated by means of cog-wheels E E on their inner ends, which gear into a pinion, D, on the driving-shaft I.

The accompanying drawings represent the respective parts of my improved nut-making machine in the position they are thrown into immediately after the last movement in forniA ing a nut and discharging it from the machine. From this position the said parts move as follows when the machine is put in motion: The cam p strikes against the surface p' at the inner side of the aperture in the sliding platcG and carries forward the punch d toward the mouth ofthe nut-box, and at the same moment the cam c strikes against the rear edge of the aperture in the sliding plate H and produces a rearward movement ol' the bottomyl of the nut-box, preparatory to the reception within said box` of lthe red-hot blank cut off by the punch d in its forward movement. The said sliding plate H is thrown outward until its outer end is brought in contact with the adjustable projection z from the spring A, and at the same time that this takes place the advancing punch d brings the blank-nut in contact with the bottom of the nut-box and continues to advance until the requisite shape has beenV imparted to said nut. While the segmentshaped portion of the face of the cam p is acting upon the punch d through the sliding plate G the cam b strikes against the surface c at the inner side of the aperture in the plate F and carries forward the round punch e, and at the same moment the projection o of the cam o strikes against the surface Z', Fig. 6, at the inner side of the aperturein the plate B, and carries forward the roundpunchf. The said cams b and o are so proportioned that they carry forward the round punches e and f into the hot yielding nutblank until they nearly meet in the center of the same, which movement of the said punches forms the hole in the nut-blank by forcing the metal from the center thereof into the body of the same, thereby causing the nut formed to be thicker than the bar from which it was cut, the bottom of the nut-box giving back to allow the nut to increase in thickness, and the increased pressure from the center outward thus exerted upon the nut insures absolute perfection of form at every side and angle. The

projection o of the cam o passes above the surfacel of the plate B and ceases to operate upon the round punch j" while the round punch e is still advancing and while the segment-shaped portion ofthe cam p is acting on the angular punch d through the medium of the sliding plate G. The round punch f is carried outward by the action of the angle o' ofthe cam o against the surface Z of the plate B, while the round punch e is carried forward by the cam b until it passes through the nut and enters a short distance into the aperture in the end of the angular punch d left by the receding punch f', where it deposits the wad which was formed in the center of the nutblank when the ends of the two round punches were brought nearly in contact with each other, as before described. The moment that the cam b ceases to carry forward the round punch e the cam a strikes the surface m at the outer side of the aperture in the plate F and withdraws the said punch, and simultane ously with said movement the cam c strikes against the inner side of the aperture in the plate H and carries forward the bottom ofthe nut-box to discharge the linished nut. At the moment the finished nut is carried out clear of the nut-box it is separated from the bottom ofthe nut-box by the action ofthe spring-bar m, which is forced inward against the nut by the projection r on the cog-wheel E. Immediately aftera finished nut has been discharged from the machine the angle o of the cam o strikes against the surface l', Fig. 6, of the slid- 'ing plate B and thrusts the end of the round punch j" a short distance out of the end of the angular punch d, for the purpose of discharging therefrom the thin wad (which was deposited therein, forming the previous nut) preparatory to the forward movement of the said angular punch d, for the purpose of forming another nut by the aid of the movements of the other parts of the machine, in the manner substantially as hereinbefore set forth.

Having thus fully described my improvements in machines employed in the manufacture of metallic nuts, what I claim therein as new, and desire to secure by Letters Patent, is-

l. The arrangement of the round punch f within an aperture in the angular punch d at the same time that a round punch, e, is arranged within an aperture in the bottomj of the nut-box, when the said round punches are combined with movements which cause them to actjointly in perforating holes in the nuts formed in said nut-box, substantially as herein set forth.

2. The joint arrangement of the angular punch d and its interior round puneh,]", with the bottomj of the nut-box and the interior round punch e, when the said bottom of the nut-box is combined with a spring or its equivalent in such a manner in relation to the said angular punch d and the round punches @and f that the action of the said parts in forming a nut will cause the completed nut to be thicker than the bar 'from which the blank was cut, substantially as herein set forth.

R. H. COLE.

Vitniesses:

Z. C. RoieBINs, THOMAs W. LAY.

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