US2361546A - Apparatus for making nuts - Google Patents

Description

`oe1.31, 1944. -H.J.1HQGUE 2,361,546 APPARATUS F011 MAKING NUTS 'li'lfedrquly '1o. 1942 l :s sheets-sheet 1 HG. 'ff

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IN V EN TOR.

BY HENRY .iA/0'@ a5 Arran/.sns

oct. 31, 1944.`

' H. J. HoGuE APPARATUS FOR MAKING NUTS Fired July 1o. 1942 s sheets-snee; 2

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IN V EN TOR.

Y H12-NPY .f H0605 Oct. 3l, 1944. H, J, HOGUE' 2,361,546

' ABPARATUS FOR MAKING NUTS l vFiled .my 1o, 1942 ls sheets-sheet s INVENroR.

/wer J' H0605 Arme/vers Patented Oct. 31, 1944 2,361,546 APPARATUS FOR. MAKING NUTS HenryJ. Hogue, Lakewood, Ohio, assigner of onethird to John C.

Charles L. Wasmer, and one-third to Wasmer, both of Lakewood,

Ohio

Application July 1942, Serial No. 450,361 1 Claim. (Cl. 1-0-76) This invention relates to the production of nuts or similar articles by cold working,.and more particularly to an improved nut making machine of the type in which round stock is subjected to a flattening operation prior to the piercing and severing of the nut blanks.

An object of my invention is to provide a nut machine of this type having novel means for performing the stock flattening operation.

Another object of the invention is to provide an improved nut machine of this character in which the stock flattening means is of a simple but rugged construction and includes a reciprocable slide which is operated simultaneously with the main slide and from the same power shaft.

The invention may be further briefly summarized as consisting in certain novel combinations and arrangements of parts hereinafter described and particularly set out in the appended claim.

In the accompanying sheets of drawings,

Fig. 1 is a plan view of ing my novel stock flattening means;

Fig. 2 is an end view of the machine;

Fig. 3 is a longitudinal sectional elevation taken through the stock flattening means,'as indicated by line 3 3 of Fig. 1;

Fig. 4 is a partial longitudinal sectional view taken on line 4 4 of Fig. 2;

Fig. 5 is a-sectional view similar to Fig. 4 but sghowing the operating parts in a different posiion;

Fig. 6 is an elevational view looking toward the piercing and trimming dies of the nut machine,

as indicated by line 6 6 of Fig. 4;

Fig. 7 is a plan view, with portions broken away, showing the stock flattening dies;

Fig. 8 is an end elevation of one of the flattening dies Viewed as indicated by line 8 8 of Fig. '7; Figs. 9 and l0 are fragmentary views taken, respectively, as indicated by lines 9 9 and I0 I0 of Fig. 1 and showing the stock entering and leaving the flattening means;

Fig. 11 is an elevational view showing the stock As I have already indicated in a general way,

v my improved nut machine is of the type in which rod stock or'wire S is subjected Y to a flattening operation prior to 'its being fed to the nut forming a nut machine embodydies. The rod stock may be round stock, as shown in Figs. 11 and 12, which is flattened progressively while the stock is being advanced, as indicated by the tapered section S1. The flattened stock S2 is fed to the dies ofthe nut machine where the holes or tap openings I n are punched and the nut blanks II aresevered from the stock in succession.

As shown in the drawings, my improved nut machine comprises in general a main frame I2 having a 4guideway I3a in which the reciprocatingmain slide .I3 operates. The slide I3 may be reciprocated by means of toggle linkage III connecting the slide with a crankshaft I5 which extends transversely of the frame I2. Instead of the toggle linkage I4 the main slide can, of course, be reciprocated by any other suitable means such as the cam means shown in 'my earlier Patent No. 2,046,075, granted June 30, 1936.

The nvt forming dies used in my vmachine may be similar to those heretofore used in n-ut machines of this type and may comprise punches I6 and Il carried by the main slide I3 and piercing andltrimming dies I8 and I9 carried by the stat'onary die block 20 and with which the punches I6 and I'l cooperate respectively. `The nut forming dies may also include a chamfering die 2| and a finishing die 22 carried by a reciprocating head 23. The reciprocating head 23 is lowered and raised in timed relation to the operation of /the slide I3 by movement transmitted from the crankshaft I5 through the links 24 and 25 and the rock shaft 26. As is customary in nut machines of this type, the reciprocating head 23 alternately shifts the chamfering and finishing i dies 2| and 22 into position for cooperation with the -punch I1 carried by the The means foi"y flattening to the feeding of the same nut machine constitutes an main slide |3. y the stock S prior to the diesof the .important feature of my invention. This flattening means is of a l adjacent the main simple but vrugged construction enabling it to render continuous service without breakdown or failure which is highly desirable in present day nut machines. This flattening means vmay be constructed as a separate device or attachment to be applied to an existing nut machine, but preferably is constructed or yembodied in the nut machine as an integral part thereof. The flattening means comprises an auxiliary frame 28 having a guideway 28 in which a reciprocable slide 30 operates. The frame 28 is .arranged frame I2 so ,that'the guide- Way 29 extends substantially parallel with the guideway I3a in winch the main slide' I3 operates.'

-slide 30.

ythe attened portion of and 33.

. push 2 The frame 28 may be formed as a separate frame portion or member which may be connected with the main frame I2 by means of a common base 21 or, if desired, may be formed as an integral part of the main frame. an extension thereof, extends transversely of the frame 28 and is connected with the slide 3 0 to actuate the latter by means of the toggle linkage 3I.

The flattening di'es may comprise an anvil or stationary die 32 and a movable die 33 cooperating therewith and carried by the-reciprocable As shown in Figs. 7 and 8, the flattening dies 32 and 33 have complemental grooves 34 therein which extend across the opposed faces of the dies and in which the stock S is subjected to pressure for flattening and shaping the same. The grooves 34 are tapered-in depth and width along the section 34a thereof which progressively changes the stock S from round to flat shape by forming on the stock the intermediate tapered sections S1. The grooves 34 also include a seotion 34h of substantially uniform depth and width by which the conversion of the tapered shape S1 of the stock to the fiat shapeAS is, completed.

The flattened stock S2 is fed to the dies of the nut machine by means of a pair of intermittently operated feed rolls 35 and 36 which operate on the stock and also serve to pull the stock through the fiattening. dies 32 'I'he feed rolls 35 and 36 are operated intermittently so as to advance the stock when the flattening and nut forming dies are in their open or retracted position. The feed rolls may be driven from the main shaft I by means of a rod 31 having a pawl 38 which cooperates with a ratchet wheel 39 mountedon the shaft of the feed roll 36.

In" the operation of my improved apparatus The crankshaft I5, orl

the stock S moves intermittently between the attening dies 32 and 33 where it is subjected to the intermittent action of these dies and is changed from -round to flat shape. The at stock S2 is fed into a groove of a stripper plate 40 which locates the stock in front of the piercing and trimming dies I8 and I9. On each forward movement of themain slide I3 the punches I6 and I1 pierce the stock and cut o one of the nut blanks II. The severed nut blank II is carried forward on the pilot I1a. of the punch I1 and is forced through the die I9 which cooperates with the punch I1 in the cut-off operation and also trims the severed blank to the approximate shape and size desired.

At the time that the nut blank is severed from the stock, the chamfermg die 2| is in'alignment with the die I9, as shown in Fig. 5, and the severed nut blank while being carried on the pilot I1a is forced against the charnfering die by the advancing punch I1. Immediately following the ohamfering operation the punch I1 is partially retracted to disengage the blank II from the chamfering head 23 is lifted to bring the finishing die 22 into alignment with the punchv I1, as shown in Fig. 4. The punch I1 thencontinues its forward movement and forces the blank II through the finishing die 22 from which it is delivered to a suitable container by the chute 4I. The return stroke of the slide I3 retracts the punches I6 and I1 to permit the stock to be fed forward for the next succeeding piercing andsevering operation.

From theforegoing description andthe accompanying drawings, it will now be readily seen that I have provided a nut machine having novel stock flattening means which is of a very rugged and durable construction and which is actuated in ltimed relation with the dies of the nut machine and from the same power shaft. It will be seen, furthermore, that the use of toggle linkage in actuating the fiattening dies affords a very powerful and effective flattening action without incurring the bending and distortion of the various parts, which has caused frequent breakdown in attening devices or attachments heretofore used with nut machines.

While I have illustrated and described my im- .proved nut making apparatus in more or less detail, it will be understood, of course, that I do not wish to be limited to the particular apparatus and details herein disclosed, but regard my invention as including such changes and modifications as do not constitute a. departure from the spirit of the invention and the scope of the appended claim.

Having thus described my invention, I claim:

In nut making apparatus, a main frame, a reciprocating mechanism ln said main frame for' piercing and severing nut blanks, -a power shaft rotatable in said main frame for actuating said reciprocating mechanism and having a lateral extension projecting beyond said main frame, an auxiliary frame contiguous to said main frame, a slide reciprocable in said auxiliary frame, cooperating attening dies carried by said slide and auxiliary frame, cooperating feed rolls between said main and auxiliary frames and operable to intermittently feed stock to be flattened to said attenng dies and to advance the flattened stock to said reciprocating mechanism` means for driving said feed rolls from said power shaft in timed relation thereto, said auxiliary frame having spaced side members with guide means thereon for guiding the stock across-the auxiliary frame and between said flattening dies andtoggle linkage connected with the extensioi of said power shaft for actuating said slide i1 timed relation to said reciprocating mechanisn and feed rolls.

. HENRY J. HOGUE.

die 2l, and at this time the

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