US257645A - berry - Google Patents

Description

(No Moel.) l zsneens-sheet 1.`

.LBBRRY.

MACHINE FOR SWAGING NEEDLE BLANKS. No. 257,645. Patented `'1N/[ay 9, .1882.

2 Sheets-Sheet 2.

Patented May 9, E882.

QN (1 E.

(-'NO Model.) f Y J. BERRY. Y MACHINE PoR SWAGING NEEDLE BLANES. No. 257,645.

u i i' 'fr 'UNITED STATES? PATENT JOHN BERRY', OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO THE i NATIONAL NEEDLE COMPANY, OESAME PLACE.

MACHINE FoRjslwgAGiNG ruafeoLF.-BLANKs.v

SPECIFICATION foaming pafeof `Ire't'ers raamt No. 257,645, dated May o, Issa.

I Appncanon-uled May 11,1881. (No model.)

. A To all whomfzftmoy concern@ zBe it known that LfJoHN BERRY, of, Springeld,` in the county'of Hampden and State of Massachusetts, h'ave invented a 'new' 'and' useful` Improvement; in lVIachi neryfi'orf Compress- \ing Needles, of whichftlie tollowingis a speci- `iication and` description.

The Object of my invention isto provide a machine for forming vneedles inl which 'one ot' the formingdies may he adjusted with reference to the other, and in which both may be adjusted to the axis ofthe clamp which holds the needle while being iormed"and in which the said clamp is provided with a'bevele'd fastening-key to secure the needlein the clamp and prevent it from becomingloose therein while heilig formed, all whichwill be more fully hereinafter described, and `illustrated in the accompanying drawings, in "fwhich- Figure I is a front viewof a i'ieedle-formin g Y machine having my inventionapplied. Fig.

,clamp and the clamp-carriage,

` avertical section through the machine, showing the diesand the guideway upon which the carriage moves whichcarries the clamp for holding the needle-blank while being formed; and Fig. IX is a front view of the die-holders or plungers and dies secured therein.

In the drawings, A represents the frame of the machine, provided with suitable guide ways or plates, between which are Secured a block, as a, and also a plunger, as b, the latter,

so as to move in a vertical direction, being actuated by two knuckle-bars, 2 and 2', the former pivoted at its upper end to said. pliniger and at its lower end to a pitman, as 3, connected with a crank-shaft, and the bar 2 pivoted at its upper end to said pitman and at its lower end to a block held between suitable verfixed in the block a, and the lower forming-die,

4, is nicely but loosely fitted in the upper part ofthe plunger b, its movement downward being limited by a device which I shall now proceed to describe, while the movement ot the plunger continues to the full extent required by the throw of the toggles. This device (shown i'n Figs. V and VI) consists ot' a disk, F, having a semicireular slot, 14, through it. From one side of this disk projects a cylindrical plug, as 13, concentric with the slot 14, andv from the end ot this plug projects a short pi, as 5, eccentric to the plu'g 13 and slot 14. A cavity is made in the back side of the plunger b,just beneath the die 4, and a hole is made through the plate E', and the plugvlB is inserted through the hole in the plate,'with the pin 5 projecting into the cavity in the plunger beneath the die, and this plug and its projecting pin may bev turned in either direction and secured by a screw, 7, inserted into the circular slot in the disk and turned into a threaded hole in the. plate E. j Suppose the pin 5 to be in its lowest position, as shown in Fig. Vl, if the disk F be turned in either direction, ot' course the eccentric-.pin 5 will turn also, and'will risein revolving around the axis ot' the plug 13. As the die 4 is lifted always to the saine'point of elevation, and as the die drops down upon this eccentricpin 5, it is evident that this pin controls the downward movement of the die 4, and that this movement is limited in extent according to theposition-ot' the pin'5, while the plunger b,- being pivoted to the upper endof the knucklebar 2, will have the same up-and-down movement as said bar L. -f

The piece a, as well as the'piece 11,1S always held stationary4 by the plates between which it is clasped, and the piece c is recessed to receive the die 3, which is permanently xed therein, and halt' the form of the needle is made in the lower end ot' the die 3, and the other 9 half is made in the upper end of the die 4, and hothtogether give the desired form to the needle when the blank is held between.

Upon one side of the frame is made a gnideway or slide', B,'upon which is fitted to move i'reely a carriage, as 12, at right angles to the dies Sand 4, and a spindle, as 14', is arranged to revolve in a bearing in this carriage, with a. handle, as 17, pivoted at one end to a stud, as 15, on the carriage, with a yoke, as 19, inclos ing a sleeve, as 20, hung on two screw-studs or trnnnions turned through opposite sides of theyoke. The spindle extends through this sleeve20'and is madehollow for a portion of its length. A tube, as 25, is tittcd to the bore of the spindlc,to slide theren,andinto the end of said tnbeissnuglyttedaclamp,as29,whosejawsat the ends are made to spring open by theirown elasticity, and the exterior of the clamp at the end is made conical, as shown in section in Fig. III. A plug, as 28, may he screwed into the tubular end of the clamp, the end ot' which pl ug, when at the proper distance from thejaws of the clamp,vserves as a gage against which the end ot' the needle-blank is placed when fixed in the clamp to be formed, thus insuring' uniformity in the needle-blanks.

A piece, 27, having an interior conical shoulder, 30, to t against the exterior conical end of the clamp, is screwed to thethreaded end of the spindle 14, and a. slot, as 2], which in Fig. Ill is shown in a vertical positioln and whose form in plan viewis shown i11Fg.VlI, is made in the spindle 14', one end of which slot is inclined and the other end vertical; and aninclined slot, 22, is madein the sleeve 20, with its upper and lower ends inclined toa horizontal plane, but both ends parallel, as shown clearlyin Fig. lll; and a piece, as 23, is fitted lengthwiseinto the slot 22, so as to slide easily, but Whose width correspondsin form tothe ends ofthe slot21in thespindle. This piece 23, which Idenominate a key,77 is made beveled orwedgeshaped on its rear edge, and-a vertical slot, 21, is correspondingly beveled or wedge-shaped, with a small space between the extreme rear 'edge of the key and theextreme rear edge of the slot, so that the key may wedge snugly into the slot without the extreme rear edge of the key coming into contact with or impinging against the extreme rear beveled end of the slot. When the key 23 is forced down by its contact with the upper inclined end of the slot in the sleeve in the movement of the latter, the key is made to nearly fill the slot in the spindle, the rear beveled edge of thekey being wedged into the beveled portion of the slot in the spindle, and the key is thereby firmly held in place; but when the 4k/ey is driven upward by contact of the lower inclined endof the slot in the sleeve with the lower end of the key the latter becomes loose in the slot in the spindle. It the extreme rear edge of the key 23 should impinge against the extreme rear end of the slot in the spindle, be'- tween the beveled sides,l by reason of any undue wear, such extreme edge of the key may be tiled oitI and permit the portion of the key to lit snugly and closely the beveled parts of the slot. Arod, as 24, threaded at its end, is turned into the threaded end of the tube 25.

`the adjusting-screw G to hold it iirmlv.

As thus arranged, it will be seen that, if the handle to this` yoke and sleeve be moved on the spindle 14l a very short distance in a direction awayfrom the clamp, the key 23 will be forced upward by the lower inclined end of the slot 22 in the sleeve, and the rod 24, tube 25, and clamp 29 are free to be moved back, and the jaws ot' the clamp will spring open and release whatever is held therein; but it the handle, yoke, and screw be moved a little toward the clamp the key 23 will impinge againstthe end ot' the 10d 24 and force it and the clamp inward, the conical end of thejaws being forced against the interior conical shoulder, 30, ot the piece 27, and the jaws will be thus forced together to graspa needle-blank, it' placed therein. One ot' the advantages of this construction ot' a clamp having a wedgeshaped or beveled key is that the constantjar ol' the machine in operation will not cause the jaws to lose their hold ot the needle-blank.

Of course it is essential that the matrix in the lower end of the upper die, 3, and that in the upper end of the lower die, 4, bothwhich give form to the needle, should be exactly coincidentwlth the axis ofthe clamp which holds the blank while being formed, and for the purpose ot effecting such an adjustment of the dies 3 and 4 I provide the adj usting-screws G and H. By turning the erankand its pitman so that the knuckle-bars 2 and 2 are exactly in the same vertical line, as shown clearly in Fig. VIII, and loosening the plates so that the permanent pieces a and 11 may be moved, the adjusting-screwG is turned up or down until the center of the matrix in theupper end of the die 4 coincides with the axis ofthe clamp, when the plates are again tightened against the piece lland the set-screw Iisturned in aga-inst The adjusting-screw H is then turned tol adjust the piece (t and its die 3 down to the die 4, and the plates E and D are. then tightened against the piece a by its screws and the set-screw I turned in against the adjusting-screw H. Power being applied to the shaft 9, the die 4 is forced up against the needle-blank placed between the dies, making two compressions of the needle-blank in one revolution ofthe shaft.

In forming' a needle-blank the handle 17 is drawn back a little, which allows thejaws otthe clamp to open. A blank is placed in the jaws and the handle moved in quickly, and the blank is firmly held in the clamp. The carriage is then moved up, moving the blank in between the dies,and the blank is rapidly compressed into the desired form by the operation of the dies and knuckle-bars, and the carriage is then drawn back, its handle moved back a little, the vblank withdrawn, and anotherinserted.

It will be seen that thc needle-blank is given the approximate form of a needle by a rapid succession of compressions betweenthe dies 3 and 4, instead of being hammered into form by distinct blows or concessions, and this pro- ICO IlO

cess of compression imparts a iirm character and fine texture to the metal of the needle while the latter is revolved by the chuck.

This machine does its work effectually and` uniformly, and its parts may be comparatively light and move with great rapidity, and the more so from the fact that with this adjustment of the lower die, 4, in its plunger b, the dies require to be separated only just enough to release the needle-blank from each compression and allow it to be revolved between the dies to receive the next co1npression, the blank being thus compressed uniformly and rapidly at every point in its whole structure.

I wish it to be understood that I do not claim the operation of two dies by means of knucklejointed bars connected with a pitman and crank; neither do I claim a clamp for clamping or holding a needle; but

Having described my invention, what l do` claim as new is- 1. In a machine for forming needles, the com bination of two forming-dies, one stationary and the other made movable and loose in a reciprocating plunger, and an adjustable stop for arresting the downward movement ot' said loosely-fitted die, two knuckle-jointed bars connected with a pitman and crank for actuating said plunger, and two adjusting-screws for adjusting said forming-dies in eitherdireetion in the line of movement ot' said plunger,substan tially as described. l

2. In a maehinefor forming needles, theeombination ot' two forming-dies, one stationary and the other made movable and loose in a re' ciprocating plunger, two knuckle-jointed bars connected with a pitman and crank for actuating said plunger and die, two adjustingscrews for adjustingsaid formingdies in-either direction in the line of movement of said plunger, and a revolving clamp for holding the needle-blanks while being formed, substantially as described.

3. In a machine for forming needles, the combination otl two forming-dies, one stationary and the other made movable and loose in a reciprocating plunger, two knucklejointed bars connected with a pitman and crank for actuat mentot' the plunger, substantially as described.

et. In a machine 4for forming needles, a revolving clalnp for holding the needles while being formed, consisting ot' a tubular spindle provided with a slot having its rear edge beveled on both sides, and containing a key correspondingly beveled on its rear edge for preventing said key from being acciden tall yjarred loose, an annular grooved sleeve having a movement along said spindle, and provided with a slot having inclined parallel ends to actuate said key, sliding jaws moving within said spindle and operated by the said key, in combination with dies/for forming the needles, substantially as described.

5. In a machine for forming needles, the combination of a fixed die, areciprocating plunger, a movable forming-die actuated by said plunger, iixed guide-plates for guiding said plunger, a revoluble plug inserted into one otl said plates, provided at the end with an eccentricpin projecting into a cavity in the. plunger beneath said movable forming-die, and adapted at its outer end to be adjusted and secured in any desired position, whereby the throw or length of movement ofthe movable die in the plunger is regulated or controlled, substan tially as described.

6. In a machine for compressing needles,the combination oi two forming-dies, one stationaryand the other lnovable between two guideplates, two knuckle-jointed bars to actuate said movable dies, and connected with a pitman and crank, and a revolving clamp for holding the needles while being compressed, substantially as set forth.

JOHbT BERRY.

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