US2828881A - Inserter for tubular rivets - Google Patents

Description

April 1, 1958 J. F. LINDLY INSERTER FOR TUBUL AR RIVETS Filed March 12. 1956 gamma 4 w w. WQV 4 INSERTER FOR TUBULAR RIVETS James F. Lindly, Dahlen, N. Dalr.

Application March 12, 1956, Serial No. 570,821

1 Claim. ((Il. 21819) This invention relates to rivet inserting devices.

it is an object of the present invention to provide an inserter for tubular rivets which will permit tubular rivets to be inserted in leather, canvas, rubber or other suitable material in a more efiicient manner than heretofore.

it is another object of the present invention to provide an inserter for tubular rivets of the above type which will effect an economy of time and labor during the insertion of tubular rivets into leather, canvas, rubber or other suitable material.

Other objects of the invention are to provide an inserter for tubular rivets bearing the above objects in mind which is of simple construction, has a minimum number of parts, is inexpensive to manufacture and efficient in use.

For other objects and for a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:

Figure 1 is a perspective view of a preferred embodiment of the present invention showing the first step in the insertion of the tubular rivet through the material;

Fig. 2 is a vertical sectional view thereof after the point of the awl shaft has penetrated the material and a tubular rivet has been disposed on the lower end thereof;

Fig. 3 is a fragmentary front elevational view shown partly in section after the rivet has been inserted.

Referring now more in detail to the drawing, represents a U-shaped bar, the lower central portion of which is provided with the circular opening 11 therethrough, substantially as illustrated.

A rectangular bar 12 is positioned between the upper ends of the bar 10, being secured thereat by means of the reduced cylindrical extensions 13 which are received within the laterally aligned openings 14 provided in the ends of bar 10, the bar 12 being provided with a central circular opening 15 of the same size and aligned vertically with the opening 11. Any other suitable fastening means may be used, of course, for connecting the bar 12 to the ends of the bar 10, for example riveting or welding.

An awl shaft 16 is slidably positioned within the openings 15 and 11 and terminates at its lower end in the point 17, which is adapted to be passed through the openings 18 drilled in the leather layers 19 (Fig. 1).

A wooden, plastic or other material handle 20 is provided with a central bore 21 which receives upwardly therewithin the awl shaft 16, the handle 20 and shaft 16 being secured together by means of the pin 22. It will be noted that the lower end of the handle 20 will limit the downward displacement of the awl shaft through the openings 15 and 11. A transverse cotter pin 23 pierces the awl shaft 16 above the point 17 thereof and is in abutment with the lower end of a coil spring 24 which sleeves the awl shaft intermediate the pin 23 and the bar 12. The spring 24 will normally retain the point 17 in the extended position of Figs. 1 and 2. It will, however, permit the retraction of the awl shaft to the atent ice position of Fig. 3 in a manner which will hereinafter become clear. As shown in Fig. 3, the spring 24 (when compressed) and pin 23 will also serve to prevent displacement of the shaft 16 through the openings 15 and 11.

In operative use, the point 17 is first inserted downwardly through the opening 18 drilled in the layers of leather 19 A tubular rivet 25 is then positioned on the point (Fig. 2) the head portion 26 of'the rivet 25 being disposed lowermost and resting on the anvil bar 27. One side of the bar 10 is then grasped in one hand and the bar central portion is pressed downwardly against the upper layer 19, against the action of spring 24. A hammer blow is then administered to the upper end of the bar it at the other side thereof remote from the side which is being held, which forces the tubular rivet 25 upwardly through the openings 18 in the layers of leather 19 until the head portion 26 comes into abutment with the undersurface of the lowermost layer, the force of the hammer blow compressing the rivet 25 between the convex central portion of the bar it) and anvil 27 to form the upper head of the rivet (Fig. 3).

The shaft 16 is tempered after it is manufactured and the handle 20 may be manufactured of wood or plastic or any other suitable material.

The device may also be used for inserting the rivets 25 in layers of other material, for example canvas and rubber, or any other suitable material.

The device' will eliminate the dropping of the rivets so common when they are inserted by hand.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claim.

What I claim as new and desire to protect by Letters Patent of the United States is:

An inserter for tubular rivets comprising a substantially U-shaped bar having a convexly curved central por tion, said central portion having a circular opening at the center thereof, a transverse bar connecting the free ends of said first bar, said transverse bar having a circular opening of the same size as and aligned vertically with said convex central portion opening, an awl shaft slidably disposed within said vertically aligned openings and terminating at its lower end in a point adapted to receive thereon a tubular rivet after the shaft has been passed through the layers of material to be riveted together with the preformed head of the rivet disposed lowermost, handle means at the upper end of said awl shaft above said transverse bar adapted to limit the downward displacement of said awl shaft with the pointed end thereof extended through the central convex portion of said first bar and spring means for retaining said awl shaft in the extended position but permitting its retraction when the rivet is forced through the material upon being supported upon an anvil and the forcing of said convex central portion downwardly onto the upper end of the rivet to form the upper head portion thereof, said spring means comprising a transverse pin piercing said awl shaft above the pointed portion thereof and a coil portion spring-sleeving said awl shaft between said pin and transverse bar and adapted to retain the pointed portion of said awl shaft extended through said first bar convex central portion.

References Cited in the file of this patent UNITED STATES PATENTS De Swart Mayl, 1951

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