US204705A - Improvement in nut-machines - Google Patents

Description

' 3 Sheets-Sheet. 2.A

f J. R. BLAKESLEE.

Nut-Machine.

No. 204,305. Patented June n, 1878,..

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LAR. BLAKESLEE.

Nut-Machine.

Patented June 11, 1878" WIM-F5555 GMM@ UNITED STATES PAT-ENT OFFICE.

JOHN R. BLAKESLEE, OF CLEVELAND, OHIO.

IMPROVEMENT IN NUT-MACHINES.

Specification forming part of Letters Patent No. 204,705, dated June 11, 1878; application led Api-i1 3, 187e. l

To all whom 'it may concern Beit known that I, JOHN R. BLAKnsLnE, of Cleveland, in the county'of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Machinery for Making Nuts; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, suchas will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to certain improvements in machinery for making hot forged nuts; and consists in the combination of parts hereinafter described and claimed.

In the drawings,Figure l is a view, in front elevation, of my machine; Fig. 2, a view, in rear elevation, of the same. Fig. 3 is an end view of the machine; Fig. 4, a partial front view of the machine, with portions removed to show the internal arrangement and operation of the parts. Fig. 5 is a detail view of certain parts. Fig. 6 represents the plan of all the eccentrics and cams of the main shaft, excepting the two end ones, showing their relation to the axis of the said shaft and their relation to each other. Fig. 7 is a detached view of a finger and finger-bar, shown in longitudinal section. Fig. 8 is a detached view, showing a punch-slide and iiattener. Fig. 9 is a detached view, showing in longitudinal section a clearing or discharging pin; Fig. l0, a detached view, showing in longitudinal section the crowner and crowner-slide. Fig. 11 is a detached view, showing the manner of operating the central reciprocating nger-bar.

A is the frame, of any suitable fashion or material to accommodate the various parts of my machine and to permit of their operation. B is the main shaft, to which the initial power is applied for driving the machine. C is the center cam. This is double in character, operating by its periphery as a cam, and having also a cam-slot formed in its side. The peripheral cam operates to raise the cutter Cl by raising its lever C2, which is pivoted to an arm, C3, which may be in the form here shown, or it may be a part of the general frame, which it essentially is. Y

To the free end of this lever the cutter-slide C7 is loosely connected, and this slide is adapted to have vertical reciprocation within the frame of the machine. To the forward lower extremity of said slide the cutter C1 is suitably secured. The cam-slot C4 in the side of the center cam C engages with a pin on an arm of the crowner-slide C5, to which the removable crowner C6, for shaping the upper face of the nut, is removably attached.

Here it may be mentioned that this crowner vC6 is in the form of a die, counter-shaped to correspond to any fashion of nut that is desired to be produced, and is removably attached to its slide C5, for the purpose of removal or replacement.

Upon either side of the center cam C are placed cams D E F G Gl H, whose functions, attachments, Src., will be hereinafter specified. Both cams D are alike in shape and function, but are placed in opposite relations upon the main shaft B, so that they shall act alternately. The same may be said of the cams E, F, and G.

The functions of the cams D are to operate the discharging-pins D. This operation is preferably accomplished by causing the cams D primarily to impinge upon levers D2, resting upon the dischargingpins D1. The lever D2, like the lever C, is pivoted upon the arm C3, or to the general frame A. Each discharging-pin D1, after it has been driven downward and made to perform its function by thecam D, is returned to its original position with its lever D2, when released by said cam, by a coilspring, D3, suitably arranged within the casing surrounding said pin.

It is obvious that a variety of modiiications to this form of my invention may be had-as, for instance, a suitable attachment between the lever D2 and the pin D-and any weight or spring or cam motion may act upon the lever whereby it shall be caused to return after being driven by the cam D.

The cams E operate the piercers or punchers El and flatteners E2. The punchers El may be either round or square, or any other shape that is desired to be given to the hole through the nut. As a matter of course, in case of screw-nuts, this punch is always round.

To the ends of the puncher-slides are loosely attached the flatteners E2. These flatteners when driven down by the action of the cams E and the puncher-slides, are made to operate against the resistance of the springs E3, which return them to their original positions when the actions of the cams E cease. These springs, however, may be replaced by any equivalent mechanism that shall operate to performa similar function.

The cams F operate the slides F', which, by their alternate action, give a reciprocating movement to the finger-bar F2. This is accomplished as follows: The nger-slides FI are each composed of a vertical and angular portion, the angular portions being inclined at about forty-five degrees. The angular portionsof the finger-slides Fl are made to. diverge from each other, and between the inner faces thereof is placed the finger-bar F2, resting in frictional contact against said inner faces of the finger-slides F', and shaped at its ends to correspond with the angle of the said finger-slides F1.

It will be obvious that as one or the other of the finger-slides F1 is driven down by its cam its angular impingement against the iinger-bar F2 will operate to drive said finger` barone way or the other, and thus cause it to lift or force the opposite nger-slide to the necessary position for its cam to operate in driving it down again, which operation will result in driving the finger-bar in an opposite direction, causing it to raise the opposite iinger-slide F1, as just specified.

To the finger-bar F2 is attached the central finger F3, whose function will hereinafter be pointed out.

The cam G operates the feed-clutch, and is so placed as to release the bar and permit it to be fed twice at every revolution of the main shaft B. This is accomplished by the cam G impin ging against the rockin g lever G2, which, by its movement on the pivot G3, operates to release the feed-clutch G4. This feed-clutch may be in the form of a spring, as here shown, which, by its Contact against the bar, shall keep it in proper position; or this clutch may be in the nature of alocking-cam or any other suitable device, the only object being to retain the bar and keep it from moving at such times as it is not desired to feed it to the machine, and to release said bar when a new shank is made to project backward through the rear wall of the machine in such amanner that the blow of the cam G1, delivered through its lever G6, may be properly received. I provide two cams, G', in this machine, for thereason that two .blows are required for every revolution of the shaft B, and these cams are placed opposite each other, as shown.

The cams H operate the lateral fingers H1 in the manner as will hereinafter be shown, to wit: As either of the lateral ngers H1 moves in toward the central nger F3 it is caused so to move by the action of the cam H through the rocking lever H2 attached to the frame A, substantially as shown. After one of the lateral ngers H1 has finished its movement toward the central iin ger F3,it then is in position to receive a blank nut after it has been cut from the bar, and its next movement is to return to its original position before it was operated upon by the ca-n H. This return is effected by the operation of the finger-bar F2, that contains it.

It is necessary during this movement that a certain degree of tension and elasticity be given to the fingers Hl. This is effected by the act-ion of the spring H3. so attached and connected with the fingersl Hl that a certain degree of yielding elasticity is imparted to said fingers. The degree of this tension or elasticity may be governed by any suitable setting device, and a given method of acco1n` plishing this is shown in the drawings by' the set-screws H4. By driving these screws more or less the degree of tension is correspondin gly determined. f

K is the stationary cutter, so fixed in relation to the moving cutter C1 that the bar, when placed between them, shall, by the operation of the two cutters aforesaid, be divided by a shearing ont. The stationary cutter K is so constructed that its euttingedge proper can be readily detached and removed for the purpose of sharpening or renewal, and it is fixed in position iny any suitable manner.

The operation of my machine is as follows In the first place it is desired to operate in a given concert, to perform the following functions, in the following order: first, to release the bar from which the blank is to be cut, so that it can be fed to the machine; second, to cut the blank from the bar and swage the nut and form its face; third, to hammer the ends of the nut and properly shape this porv tion of the product; fourth, to carry the nut to its punch and flattener; fifth, to punch or pierce and flatten the nut; sixth, to deliver the nut from the machine in its finished state, ready to receive its screw-thread.

It will be observed, however, that instead of performing these functions upon a single nut at a time there are, while the machine is in full operation, always two nuts being operated upon at once, one upon either side ofthe finger F3. While being thus operated upon the nuts are held in position between either side of said central fin ger F3 and the lateral fin gers Hl, and during the operation justmentioned, when necessary to be carried from one point to another, are carried over the space at `th sides of the cutter C1. y v

Supposin g, for the purpose of a clearer illustration of the operation of the machine upon three successive nuts, we give the following description: The blank first is cut,

crowned, and hammered upon its ends. It is then carried laterally to be punched and flattened, and while being so punched and flattened the blank of the second nut is cut, crowned, and hammered upon its ends. Now the rst nut is returned until 4it reaches the space at the side of the cutter C', when the delivery-pin over it is dropped upon it, and the nut is discharged from the machine.v Meanwhile the second one is being carried to be punched and flattened, and the blank of the third nut is cut, crowned, and hammered upon its ends, and while the third nut is being carried laterally to be punched and finished the second nut is discharged upon the opposite side of the cutter from that which the first was delivered, and so on. This concert of action is continued, the machine, as it were. doing double duty with a single crown and cutter.

If found desirable,I may modify-my machine as follows: Instead of the nut receiving its fashion from the crowner C6, this operation may be performed by dies placed upon the ends of the fiatteners E2, and the same result produced without any variation from the spirit of my invention.

What I claim is- The combination, with the cro wn er, central finger, and lateral fingers, said fingers respectively having movement as described, of the punching, flattening, and discharging devices,

substantially as set forth.

2. The combination, with the cutters, central finger, and lateral fingers, said fingers respectively having movement as described, of the crowner, the punching, the attening, and the discharging devices, substantially as set forth.

3. The combination, with the cutters, feedclutch. crowner, central nger, and lateral fingers, said fingers having movements as de scribed, of the punching, the fiattening, and the discharging devices, substantially as set forth.

4. The combination, with the cutters, feedclutch, crowner, hammer, central nger,'and lateral fingers, said fingers having movements as described, of the punching, the iiattening, and the discharging devices, substantially as set forth.

5. The combination, with the central finger F3, of the lateral ngers H', the latter adapted to have alternate reciprocation to and from said central finger, substantially as set forth.

6. The combination, with the lateral reciprocating ngers H', adapted to have an adjustable tension or elasticity imparted thereto,

of the finger F3, formed on ythe finger-bar F2', l

substantially as set forth.

7. The combination, with, the upper stationary cutter, lower vertically-reciprocatin g cutter, and central finger F3, which latter is adapted to have lateral reciprocation relative to the machine, of the lateral fingers H',which are respectively adapted to have reciprocation relative to saidcentral finger and on opposite sides of the same, substantially as set forth.

8. The combination, with the cutters, central finger F3, and lateral fingers H', of the hammer G5, substantially as set forth.

9. The combination, with central finger F3 and lateral lingers H', the same being adapted to have lateral movements relative to the machine, of the crowner C6, substantially as set forth.

1o. The combination', with the cutters el and K, central finger F3, and lateral fingers H', of the crowner O'i and hammer G5, substantially as set forth.

11. The combination, with the central fin gerv I F3 and lateral fingers H', the same having movements as described, of the punchers E',

substantially as set forth.

l2. The combination, with central finger F3 and lateral 1in gers H', the same having movements as described, of piercers or punchers El and fiatteners E2, substantially as set fo'rth. 13. The combination, with central finger-F3 `and lateral fingers H', the same having movements as described, of the discharging-pins D', the latter being adapted to have vertical reeiprocation alternately, respectively on opposite sides of said central finger, substantially as set forth.

14. The combination, with central finger F'J and lateral fingers H', the same havin g movef ments as described, of punchers E', flatterers E2, and discharging-pins D', substantially as set forth. 1

15. The combination, with the cutters C' K, fingers F3 H', and hammer G5, of crowner C6, punchers E', fiatteners E2, and discharging pins D', substantially as set forth.

16. The combination, with central finger F3 and lateral fingers H', the same having movements as described, of the cutter C', which vertically reciprocates within a recess formed in the frame of the machine, as shown, and having an open space upon both sides thereof, through which latter the nuts are alternately discharged, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence oftwo subscribing witnesses. Y

v JOHN It. BLAKESLEE. Vitnesses F. TOUMTEY, W. E. DONNELLY.

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