US904618A

US904618A - Loose-leaf binder.

Info

Publication number: US904618A
Application number: US31745006A
Authority: US
Inventors: Otto Kellner Jr
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-05-18
Filing date: 1906-05-18
Publication date: 1908-11-24
Anticipated expiration: 1925-11-24

Description

OLKELLNER, JR-

.LOOSE LEAF BINDER. A'PPLIOATION FILED MAY 18, 1906.

Patented Nov. 24, 1908.

Ilia- Hi5 Z in place between the covers by the improved Uhil iiliili) Trkifll "FAJEENT OFFICE.

UTl'OliELLNER, .llt., Ul" Cllltlititl, lLLlNUlS.

LOOSE-LEAF -BINDER.

Toiallwhom it may concern:

Be it known that I, O'r'ro KnLLnna, Jr., a

- citizen of. the United States, and a resident of Chicago, county of Cook, and State of Ill nois, have invented certain new and uscful improvements in Loose-Leaf Binders, of

whichthe following is a specification.

The inventioii relates to loose leaf and other temporary binders and seeks to provide an improved construction of metal ring for such, binders for retaining the loose sheets of paper and the like Within the covers Of the binders.

The invention consists in the novel fea- T tures of' construction hereinafter described,

in the drawings, Figure 1- is a perspective view of a loose leaf binder provided with the improved rings. Fig. 2 isa sectional view thereof. Fig; 3 is an edge view of the improved ring in open position. 'Fig. 4 is a similar view showing the ring in closed position. i v

The binder comprises the covers of any suitable material, but preferably, of stifi board, connected at their rear edges by a flexible back 11 of leather or like suitable material. The covers.are provided adjacent their rear edges with eyelets l2 and the loose sheets 13 of paper or the like are held fastening rings it which extend through the eyelets l2 and through suitable openings formed in thercar edges of the loose sheets. Each ring 14' comprises a single piece of wire formed of flexible spring metal-preferably mild steel. lhe wire of which the ring is formed is preferably round in section and of small diameter, so that it is flexible to permit the opening of portions of the ring. The wire is bent to circular-form with its free ends in offset relation, as shown in Fig. The remote or outer faces of the ends of the ring are provided with outwardly facing. interlocking lugs 15 and notches 16. T he lugs and notches on the opposite ends ofthe ring are of similar torn id so shaped that when interlocked, as shown in Figs. 1, 2 and l, a continuous closed ring of uniform section is formed.

In the open position of the ring shown in Fig. its ends are normally held in ofiset relation with the interlocking lugs and notches on their outer or more remote faces.

Specification of Letters Patent.

, Application filed May 18,

Patented Nov. 24, 1908.

1906. Serial No. 317,450.

tension of the spring metal body 0 the ring,

then in circumferential direction to their overlapped interlocked position shown in Fig. 4-. Both the" axial and circumferential movements of the ends of the ring, which are necessary to interlock the same, take place against the tension of the spring metal body of the ring, so that when its ends are interlocked the ring is positively placed both under a torsional and an expansive strain or stress which is then exerted in keeping the ends firmly interlocked. i

The invention thus provides a simple form of ring which may be very cheaply manufactured, which, may be easily opened for insertion into the binder and readily closed to prevent displacement oi the sheets or the like bet ween the covers ofthc binder. hen the free ends are interlocked a closed ring is formed of uniform circular section which will readily slidethrough the eyelets of the covers and through the openings in the sheets of pa pet or the like between the covers. Moreover, the ring is looked under expansive and torsional strain which is exerted to hold .accidental opening of the ring. As stated, the metal of the ring is of small size so that its ends may be flexed or bent apart, as indicated in dotted lines in Fig. 3, if deeyelets 12 of the covers and through the a fiexure of the ring merely increases the torsional strain against which its ends are interlocked and against which the ends are brought together and which serves to hold the same in interlocked position. YVith the improved construction rings of small size for small loose leaf binders may be conveniently 'mamifactured.

Having described my invention, What I claim as new and desire to secure by Letters Patent, isn- 1. A metal ring for loose leaf binders and the like formed of a single, continuous piece of flexible spring wire having its ends in open position spaced apart both in axial and circumferential direction with their outer or remoteside faces provided with interlocking lugs and notches, said ends being movable against the tension of the spring metal body of the ring in axial direction past each, other and in circumferential direction E The ends of the ring are movable a ainst the the ends of the ring interlocked and prevents first in axial direction past each other and sired, for moroready insertion through the openings of the sheets or leaves 13. Such to overlapped, interlocked position, as destress to hold the ends securely interlocked.

2. In loose leaf or temporary binders, the combination with the covers having eyelets adjacent one edge, of metal rings extending through said eyelets, each formed of a single piece of fiexiblespring wire of uniform cross-section having its ends spaced apart both in axial and circumferentlal direction with theirouter or remote side faces cut away and provided with interlocking lugs and notches, said ends being movable against the'tension of the spring metal body of the 15 placed under torsional and expansive strain 20 to hold their ends securely interlocked.

I OTTO KELLNER, Jig. Witnesses:

KATHARINE GERLACH, LILLIAN PRENTICE.