US1912653A - Method of forming terminal rivets - Google Patents

Description

June 6,' 1933.; c. cs. OLSON 1,912,553

I METHOD OF. FORMING TERMINAL RIVETS Filed March 21. 1930 w I n- I I I 20 M E a I I will? Patented June- 6, 1933 UNITED A srras CARL G. OLSON, OF CHICAGO, ILLINOIS, 'ASSIGINOR TO SHAKEIPROOF LOOK WASHER COMPANY, OF CHICAGO, ILLINOIS,

A CORPORATION OF -DELAWABE METHOD OF FORMING TERMINAL RIVETS Application filed March 21,

w an insulating panel by means of a separate rivet which is inserted through the aperture of the terminal. Terminal members of the above mentioned type are disclosed in a number of my co-pending applications, for example, my application, Serial No. 413,707, filed December 13, 1929. I

It is one of the primary objects of my present invention to eliminate the necessity of employing separate terminal and rivet elements, and to this end I propose to provide a device of a unitary or integral construction, in which one section thereof presents an extension or terminal portion, and another section thereof forms an integral rivet.

My invention contemplates the provision of a new and improved method of making such devices from a single piece of stock.

A still further and more specific object is to provide 'a method, wherebya terminal, rivet may be. formed from a single piece of round stock. or wire by bending and upsetting said round stock in such a manner as to present a complete terminal rivethaving a section thereof for receiving a conductor and another rivet section thereof for securing the device in position.

These and numerous other objects and advantages will be more apparent from the following detailed description when considered in connection with the accompanying drawing, wherein:

Figure 1 is an elevational view of apiece of round stock or wire, from which a unitary terminal rivet maybe formed by practicing the method which is contemplated by my present invention; v Figure 2 discloses the step of stock of Figure 1;

Fi ure 3 discloses the next step, which consists 1n shaping the bent stock of Figure 2 into bending the shown in the other figures.

1930. Serial No. 437,795.

a fiat type terminal section and a rivet section extending laterally thereof;

Figure 4 is an enlarged view similar to Figure 3 disclosing the next step in the formation of the article, which consists in providing a conductor receiving aperture at one extremity 'of the terminal section and a recess within the rivet section;

Figure 5 is a View of the underside of the device shown in Figure 4;

Figure 6 discloses the device of Figures 4; and 5 with a plurality of work engaging, locking teeth formed onthe flange portion, whichis positioned at one extremity of the rivet section;

Figure 7 is a view of the underside of Fig- Figure 8 is a sectional view taken centrally and longitudinally of the terminal rivet, said device being shown in operative association with a sheet of insulating material, with the teeth thereof imbedded within 'said material;

Figure 9 is a terminal rivet of a modified form, the terminal section thereof extending longitudinally instead of laterally of the rivet section; and i Figure 10 is still another modification, wherein a pair of terminal sections are employed instead of a single terminal section as Referring now to the drawing more in detail wherein like numerals have been em ployed to designate, similar parts throughout the various figures, it will be observed that my invention contemplates the provisionof a new and improved method for making terminal rivets of the unitary type,-and this method consists in selecting or severing from a strip a section such as a length of round stock or wire which I have designated generally by the numeral 12 in Figuresl and 2. This section or length of round stock is first bent to present the structure shown in Figure 2, and this bent structure is subjected to a forming operation, such as by means of a suitable die (not shown), to present the structure shown in Figure 3'. The structure of Figure 3, as well as the structure of Figure 4, includes an elongated flat terminal 100 section 14, one'extremity of said section being formed with an annular or flange section 16. Extending laterally and centrally of said flange section is a cylindrical section 18 which might be termed a rivet section.

' The outer extremity of the terminal section H isformed with an aperture 20 such as by punching or drawing, which is designed to receive aconductor 22, as clearly shown in Figure 8. The rivet section 18 is provided with a central elongated aperture 24 to facilitate the upsetting of the rivet section after the same has been associated with a piece of sheet materiahsuch as the insulating material 26 shown in Figure 8. A

' plurality of teeth '28 are swedged or formed along one face of the flange section 16 as by means of a suitable swedging die, and these teeth are adapted to imbed themselves within the sheet ofmsulating material 26 to-secure the terminal and rivet sections against rotative movement.

In use, the rivet section 18is inserted with in an aperture 30 provided in the sheet 26,

and the portion of the rivet section extending beyond the sheet and surrounding the re-' cess 24 may be upset or peened over to present an annular flange. 32 as shown in Figure 8, which may be brought to bear against the surface of the sheet26, and thereby cause the teeth 28 to become imbedded within the op-' posite surface of the sheet. If desirable, a conductor 34 may be simultaneously secured in position against the inner surface of the annular flange 32. Thus it willbe apparent that my invention not onl contemplates the a sheet of insulating material by emplloying .a separate or independent rivet, whic is inserted through an aperture provided in the connector. My improved device, asaresult of its integral or unitary construction, eliminates the necessity of handling two elements, and the structure of my device is much" more simple in construction than the combined independent elements which have -been pre-I viously employed. v

.My'invention is in no sense to a connector or terminal device having a ter-' mifisl section of any specific design, and thisis evidenced by the .modified structures shown in Figures 9 andl'O. In Figure'9 I have shown a device which is-similar to the terminal devices just describedin that said figure discloses the rivet section 18 extending Having thus described m y in vention, what provision ofa simple an economical methvery deslm outwardly from the flange 16, which is provided with a plurality of work engaging teeth 28. However, the structure in Figure 9 differs from the other devices in that a terminal section 1411 formed integral with the flange section 16 extends outwardly from the igure 10 I have shown a plurality of.

Thus it will be apparent that my invention contemplates the provision of unitary or integral terminal devices of varying sizes and shapes.

From the foregoing it will be understood that the steps of my simple method for manufacturing terminal devices may be practiced by employing conventional types of shop machinery, and therefore said-method may be practiced ina very expeditious manner. The device which is produced as a result of the practice of my improved method, has many practical applications, such for example, as in the radio industry wherein a plurality of terminals or connectors are frequently employed in connection with the panels of receiving units and the like. Terminal devices for such purposes are used in very large quantities, and, therefore it is 1e to reduce to a minimum the cost for manufacturing suchdevices, and also to reduce as far-as possible the amount of labor in mounting such devices upon insulating panels and the like. My invention meets these requirements by roviding a simple and economical method 0 manufacture, as well as a device, which, by reason of its simple unitary construction, may be mounted upon a panel with a minimum amount of effort and skill. By providing the teeth along one face of the terminal flange, I- am able to positivelysecure the device against displacement.

In the drawing I have shown the terminal device as being formed from a length of round stock, but 0 viously, lengths of stock having other cross-sectional shapes may be emplcyed without departing from the spirit an scope of my invention.

' In fact, my inventioncontemplates the manufacture of integral terminal rivets from any form of stock which may be convenient ly subjected to forming or stamping 0 erations. Oneof the importantfeatures o the invention resides in t e fact that it enables theproduction of terminal rivets of unitary or in l'form from lengths or sections of vario shaped stock.

I claim as new and desire to secure by Letters Patent is:

1. The method of forming electrical terminal devices which consistsin.bending a length of elongated conductive material, flattening a portion of said bent length to present a terminal section and forging the other portion to present a rivet section, and

then providing a recess in said rivet section,

whereby said rivet section may be upset when applied to a panel. I

2. The method of forming electrical terminal devices which consists in bending a length of elongated conductive material,

flattening one of the resulting sections into anelongated terminal section, and upsetting the other section to present a rivet section extending laterallyvof said flattened terminal section.

3. The method of forming electrical terminal devices which consists in bending a length of elon ated conductive material,

flattening one o the resulting sections into an elongated terminal section, and upsetting the other section to present a rivetsection extendinglaterall of said terminal section and to present a ange having work engaging teeth surrounding said rivet section.

4. The method of forming electrical ter minal deviceswhich consists in bending a length of elongated conductive material, forming one of the resulting sections into an elongated terminal section, upsetting the other section to present a rivet section extending laterally of said terminal section" and to present a flange having work engaging teeth surrounding said rivet section and providing a recess in the rivet section, w ereby said section may be upset for securing the device in position upon a work piece.

In witness whereof, I have hereunto subscribed my name.

CARL G. OLSON.

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