US1399793A

US1399793A - Method of making winged nuts and the like

Info

Publication number: US1399793A
Application number: US365592A
Authority: US
Inventors: Reed Edgar Howard
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-03-13
Filing date: 1920-03-13
Publication date: 1921-12-13
Anticipated expiration: 1938-12-13

Description

. E. H. REED.

METHOD OF MAKING WINGED NUTS AND THE LIKE.

APPLICATION FILED MAR. 13. 1920.

'1 399,793. Patented Dec. 13, 1921.

mural) srras EDGAR HOWARD REED, OF WORCESTER, MASSACHUSETTS.

METHOD 015' a s is.

To all whom it may concem: Be it known that I, EDGAR HOWARD REED, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Method of Making Winged Nuts and the like, of which the following is a specification.

The principal objects of this invention are to provide for shaping wing or thumb nuts and articles of similar shape from wire or cylindrical blanks in a way that will necessi tate fewer operations in shaping the nut than has been the case with the methodsheretofore employed for making them of wire, and thus produce less distortion of the metal and produce a nut more nearly of the shape made by drop forge process. X I accomplish these results, generally speaking, by forming the articles from a blank consisting of a piece of wire originally of the diameter of the nut proper so that that part of the nut does not have to be formed ,or its shape changed, and a characteristic the entire blank is confined in the dies and the pressure on the blank is exerted in the direction of the axis thereof, instead of in a transverse direction as has been the case heretofore. Further objects and advantages of the invention will appear herein.

Reference is to be had to the accompanydrawings, in whichigure 1 is a a perspective view of a piece of metal rod or wire which constitutes the original blank from which the article is to be made;

Fig. 2 is a similar view showing the blank at an intermediate stage of its manufacture;

Fig. 3 is a similar view of the completed article;

Fig. 4 is an elevation partly in section of the first set of dies;

Fig. 5 is a plan of the lower die, and

Fig. 6 is a side view of one of the half dies used in the finishing operation.

In accordance with this invention, a blank A is formed from a piece of wire or cylindrical rod of the desired metal, cut ofi' square at each end, the length, of course, being determined by the amount of metal required to form the article.

If the article to be produced is a wing nut as C, the blank A is first put through an upsetting operation in dies to roduce an intermediate result shown at It is to be Specification of Letters Patent.

PATENT OFFICE me wmcnn NUTS AND THE LIKE.

Patented Dec. 13, 1921.

1920. Serial No. 365,592.

understood that this invention is not limited to the making of wing nuts, as it can be used for the manufacture of other articles of a s1m1larnature in which there is a central body as 0, shown as cylindrical in this case, and arms'or wings as 0 projecting therefrom. It is to be noted that in the intermediate stage there is a central body I) of cylindrlcal shape and of the same diameter as the blank A, which is a part of that blank unmodified in shape but of less length. This intermediate body also has arms 6' which in this instance extend from it in op osite directions and are formed by upse ting the metal of -the blank A. These arms are eventually shaped to form wings 0 F or the purpose of forming the intermediate blank B from the original blank A, a,

pair of dies are employed. A female die 10 has a central passage in which is a cylindrical plunger 11, which furnishes the bottom of the die and constitutes an ejector for ejecting the article from it. This plunger is of the same diameter as the blank A. The

passage which receives the plunger 11. continues clear up through to the top of the die to form a cylindrical cavity 12 high enough to receive the original blank A restin on the top of the plunger 11 when that 1s in the position'shown in Fig. 4. This cavity 12 constitutes an important feature of the die which isalso provided with two recesses 13 in the present instance on opposite sides of the cavity 12 and communicating therewith. These recesses are inclined at their lower surfaces in the form shown.

The male part of the die consists of a support 15 having a plunger below it provided with a cylindrical central portion 16 and two opposite projections 17 having inclined lower surfaces 18 and rounded ends.

The operation consists in placing the blank A in the die 10 on top of the plunger and then, while keepin that plunger in stationary position an the blank confined between the dies throughout its length, forc-' 21 is of the same diameter as the blank i and the hub b, so that no work is done really on this part of the blank, but the finishing dies come together on the blank B, and give it its finished shape as shown at (win a way that will be readily understood.

The only thing necessary in order to complete the wing nut C aft-er it is operated upon in the;dies 20, is to bore onpierce the central passage 0 and thread it, because the central nut portion and wings are entirely finished on their exterior surfaces by the dies'20.

In this Way,it will be seen that there is a material part of the article, namely the central hub or nut portion C, on which practically no work is required, thus eliminating the necessity of working practically half of the metal in the article. Furthermore, only two operations are required in manufacture, a rough upsetting operation, and a finishing pressing operation, thus reducing the number of steps ordinarily employed for making wing nuts out. ofwire. It will be understood of course, that when-the inven* tion is used for making other articles which come within its terms, the dies will be modified accordin ly.

Although have illustrated and described only a single series of steps and a single set of dies and have shown the invention as applied to the manufacture of one particular article only, I am aware of the fact that the invention can be employed for the production of other articles of a similar nature and with modifications in the shape of the intermediate blank and both sets of dies without departing from the scope of the invention as expressed in the claims. There fore I do not wish to be limited in these respects, but what I do claimis:

1. The method of making articles having a central main portion with projections therefrom, which consists in upsetiting a cylindrical wire blank in an axial direction nut, and thereafter finishing said wings by lateral compression without materially altering said body.

3. In a set of dies, the combination. of a female die having a central longitudinal passage therein and recesses extending from said passage sidewise, and a plunger having a central longitudinal portion and projections extending therefrom for entering said die and upsetting ablank standing therein to fill the said recesses with metal therefrom to provide projections on the central portion of the blank.

4. In a set of dies, the combination of a female die having a central longitudinal passage'all the way through it, an ejecting lunger in the bottom of said passage, an recesses extending from said passage sidewise immediately above the top of said plunger when in normal position, and an upsettmg p-lunger'having a central longitudinal ortion and projections extending there om with slanting lower surfaces for cute said die and upsetting a cylindrical blank resting on the first named plunger to fill the said recesses with metal therefrom to provide projections on the central portion of the blank.

In testimony whereof I have hereunto affixed my signature.

EDGAR HOWARD REED.