WO1990013439A1

WO1990013439A1 - Concealed rivet element and setting method for ring binder construction and the like

Info

Publication number: WO1990013439A1
Application number: PCT/US1990/002519
Authority: WO
Inventors: Edward W. Cooper; Peter Dewberry
Original assignee: Acco World Corporation
Priority date: 1989-05-08
Filing date: 1990-05-07
Publication date: 1990-11-15
Also published as: MY107072A; GB2231523A; GB2231523B; GB8918479D0; CA2032161A1

Abstract

A multi-layered article having a dual layer base element and adjacent element which elements are fastened together employing (1) an anvil located in the dual layer base element and (2) a deformable fastener. The deformable-end fastener is driven against the base anvil to deform the fastener-end which grips a layer of the base element once deformed.

Description

CONCEALED RIVET ELEMENT AND SETTING METHOD FOR RING BINDER CONSTRUCTION AND THE LIKE

Background of the Invention

5 It has been known that ri.vets havi.ng porti.ons protruding from the spine (and visible when the folder is closed) have been used.

In addition, binder folders in which the rivets ⁰or other fasteners for holding the ring binder mechanism to the binder spine do not protrude from the spine are old (U.S. Patent Nos. 4,295,747; 4,522,442, and 4,722,628) .

Anvils which remain attached to the spine or ^other workpiece include the button construction shown in U.S. Patent Nos. 496,357 and 3,745,613 and the rivet construction in U. S. Patent No. 3,494,246. Anvil means attached to a fastener for accomplishing embedding the fasteners in composite boards has also been proposed (U.S. patent No. 4,138,779).

Summary of the Invention

Broadly, the present invention relates to a multi-element product held together by a rivet and the method of making the multi-element product comprising the steps of providing a hard layer adjacent a compressible soft layer to*' form a base composite, forming a hole in the hard layer, positioning an anvil in such hole and thereafter embedding the anvil in the compressible layer. A third component is then secured to the hard layer by inserting a rivet (having a head at one end and a deformable portion at the other end) through an opening in the third component and thereafter applying a force to the head to deform the deformable rivet portion as it is driven against the anvil until such portion is larger than the hole in the hard layer and is not removable through the hole of the base composite due to the interference of the hard layer. The hard layer of the composite may be a metal sheet.

5

It is a feature that the product of the method is a rivet with its end, as deformed in the soft layer, is not visible from the side of the compressible layer opposite the hard layer of the base.

10

It is a further feature of the invention that the base composite may be a composition board and metal sheet lamina for use as a spine for a ring binder book with one or more rivets holding the ring mechanism affixed to the metal

,ιb_layer in accordance with the present invention.

Brief Description of the Drawings

Fig. 1 is a top plan view of a ring binder including spine, cover and arched metal casing embodying the invention partially cutaway with an upstanding rivet exposed and further cutaway showing the rivet end deformed;

Fig. 2 is a sectional view showing the anvil positioned in the hole in the metal sheet and resting on the upper surface of the soft compressible layer;

Fig. 2a is a view similar to Fig. 2 with the anvil set down into the soft compressible layer;

Fig. 3 is a sectional view taken along line 3-3 30 of Fig. 1;

Fig. 4 is an.enlarged sectional view with a rivet resting on the anvil prior to being driven downward; and

35 Fig. 5 is a sectional view similar to Fig. 4 with the rivet driven downwardly to deform its lower end.

Description of the Preferred Embodiment In Fig. 1 ring binder 10 includes spine 11, covers 12, 13, swingable about hinges 12a, 13a and curved binder metal casing 14. Spine 11 is a laminate comprising an outside vinyl sheet 15 (not shown in Fig. 1) , a composition fibrous board 17, a metal plate 18 and an inside vinyl sheet 19. Also shown are four (4) nail bursts 21a, b, c, and d in metal plate 18, round rivet-receiving hole 20 in the plate 18 and rivet 23 having head 23a and deformed rivet end sectors 23b. Nail bursts 21a-d may be formed with any suitable drivable instrument including a nail. Metal plate

18 may be made of any material which will resist withdrawal of rivet 23 under normal conditions of operation once driven and set.

Turning to Figs. 2 and 2a, anvil 24 including horizontal feet 24a, b and crown 24c positioned in hole 20 of plate 18 (Fig. 2) . After anvil 24 has been driven down into board 17 a compressed portion 17a of board 17 is forced up into the underside area of rivet crown 24c. Also shown is lower vinyl sheet 15. Plate 18 is preferably metal but may be made of any hard material while board 17 should be made of a soft material such as paper or wood composites.

Fig. 3 shows the nail bursts 21c and 2Id having bend-down sheet clinching fractures 26 which function to engage metal sheet 18 with board 17.

Turning to Figs. 4 and 5, curved metal casing 14 is constructed of cover pieces 14a and 14b and hold-down braces 25. Braces 25 include upper hooks 25a and feet 25b. Rivet 23 has internal cavity 27 which permits cylindrical rivet skirt 28 to fracture and curl to form deformed rivet sectors 23b (see Figs. 1 and 5) to hold and anchor rivet 23 between anvil 24 and the underside 18a of plate 18. Also shown are upper and lower vinyl sheets 15, 19. Board 17 is gpreferably of sufficient thickness such that anvil 24 is spaced from the board's outer surface after deformation of rivet 23. The outer surface of board 17 is the lower surface as shown in Figs. 4 and 5. Since rivet 23 does not penetrate through board 17 sheet 15 is not required for -cosmetic or other reasons.

5

0

5

0

5

Claims

I claim*:

1. A multi-element article having a base element and an adjacent element having fastener means for urging the -adjacent element against the base element, the improvement comprising a. a layered base element having a layer adjacent the adjacent element; b. an anvil located in and forming a part of the base element; c. the fastener for fastening the base element to the adjacent element, including a head, a stem, and a deformable end opposite the head; d. an opening in the adjacent element for engaging the fastener head when the deformable end is deformed against the anvil to grip the base element.

2. A method of setting a rivet having a head, stem and deformable end with said head, stem and end integrally formed into a layered element comprising

a. providing an element having an upper layer, a hole in the layer and a recess below such hole; b. placing an anvil in such recess;

c. inserting the rivet partially into the recess with the deformable end against the anvil; and

d. driving the rivet against the anvil until the deformable end is so deformed that it cannot be removed from the recess by passing it through the layer hole.

. The method of claim 2 in which the layered -element is the spine of a ring binder.

4. In a ring binder having a spine and a ring mechanism, the improvement comprising a spine with an inside hard layer with a hole formed in it, an outside adjacent soft layer, and a fastener means for fastening the spine to the ring mechanism which fastener means includes an integrally formed head, stem and deformable end fastener element and an anvil located in the soft layer below said hole in the hard layer, the fastener element driven against the anvil to deform its end to the extent it is not able to lo pass through the hole.

5. The ring binder of claim 4 in which the soft layer has outside and inside surfaces and in which the anvil

„_after the fastener element has been deformed is located 20 spaced from the outside surface.

25

30

35