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Publication numberUS1462925 A
Publication typeGrant
Publication dateJul 24, 1923
Filing dateDec 12, 1921
Priority dateDec 12, 1921
Publication numberUS 1462925 A, US 1462925A, US-A-1462925, US1462925 A, US1462925A
InventorsWilburger William
Original AssigneeWilburger William
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Spring binder post
US 1462925 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

.Eufiy 241 1923. I

' W. WILBURGER SPRING BINDER POST Filed Dec. 12, 1921 Emilfl\\\\\\\\\\\\\\\\\\\\\\\\WEEE I Patented July 24, 1923..



Application filed December 12, 1921. seriaim. 521,782.

. To allwkom it may concern:

Be it known that I, WILLIAM WILBURGER, a citizen of the United States, and resident of Brookl in the county of Kings and State of lld w York, have invented certain new and useful Improvements in Spring Binder Posts, of which the following is a full, clear, and exact specification.

This invention relates to spring binder posts for use as temporary binders for loose leaf books or pamphlets, and has for its object to provide an improved post of coiled resilient wire on which papers may be placed more conveniently than in prior constructions, and secured in a novel and eflicient manner.

Another object is to provide an extensible binder post which may be adjusted in length to accommodate different numbers or thicknesses of leaves, so that additional leaves may be added to a book, thereby materially increasing the thickness thereof without the necessity of changing the binder posts.

Other objects will appear as the description proceeds.

The invention will be first hereinafter described in connection with the accompanying drawings, which constitute part of this specification, and then more specifically defined in the claims at the end of the description.

In the accompanying drawings, wherein similar reference characters are used to designate corresponding parts throughout the several views:

Figure 1 is a sectional view through a loose leaf pamphlet in which binder posts constructed substantially in accordance with this invention are used, the section being taken in line with one of said posts which is itself shown in elevation.

Fi re 2 is a detailed longitudinal section of t e post shown in Fig. 1 drawn to a. larger scale.

Figure 3 is a loweraend view of said post, and 1 Figure 4 is a brokenrlongitudinal sectional view of a modified form of post which may be used interchangeably with'the form illustrated in Figures 1 and 2.

Referring first to Figures 1 and 2, 1 designates a pamphlet consisting of a plurality of leaves bound together by any suitable number of osts 2. Each of said posts 2 has its sha formed of a single piece of coiled wire 3, the upper end portion 4 of which is of smaller diameter than its lower portion 5 to facilitate the placing of the leaves of the pamphlet on said posts. Each leaf of the book has a hole 22 of a size to fit loosely around the lower portion 5 of each post. The reduced upper end portion 4 of the shank also permits the cylindrical portion 6 of a head or cap 7 to be screwed over the same, for fastening the leaves on the post, without increasing the diameter of said upper portion of the shank beyond the diameter of the lower port-ion 5 thereof.

The lower head 8 of the shank 2 may be formed integral therewith by extending some of the coils of the wire at the base of the larger portion 5 in spiral form, as illustrated in Figure 3. When the lower head of the post is formed integral in this way, the danger of a separable head becoming displaced is avoided. The flat spiral head is also more compact and occupies less space lthat;l would be taken up by an attached iea As illustrated in Figure 4, both end portions 9 and 10 of the coiled wire shank may be made smaller in diameter than its central portion 11, and caps 12 similar to the cap 7 illustrated in Figures 2 and 3, may be screwed over both of said reduced end portions. It will be understood that the cylindrical portions of said caps are internally threaded to engage the spaces between the coils of the wire of which the reduced ends of the shank are formed.

I claim:

1. A binder post of the character described formed of a single piece of coiled wire having one end portion of reduced diameter, and a cap having an internally threaded socket to screw over said reduced end of said shank.

2. A binder post of the character described formed of a single piece of coiled wire having one end portion of reduced diameter, and a cap having an internally threaded socket to screw over said reduced end of said shank, the socketed portion of said cap being of substantially the same external diameter as the larger portion of the shank.

In testimony whereof I have signed my name to this specification.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2447534 *Jun 15, 1944Aug 24, 1948Int Standard Electric CorpMetal rectifier
US2602278 *Nov 2, 1949Jul 8, 1952Women Sam SamCotton-picking finger
US2756848 *Jan 18, 1955Jul 31, 1956Goodyear Aircraft CorpConical coil spring brake lining retention device
US2852801 *Aug 8, 1956Sep 23, 1958Christian F KleinknechtDoor stop
US2903199 *Dec 10, 1956Sep 8, 1959Sigmund J GralewiczSupports for material in roll form
US2948953 *Feb 2, 1956Aug 16, 1960Illinois Tool WorksMethod for forming a wire connector
US3030812 *Aug 8, 1958Apr 24, 1962Leetronics IncMeasuring device
US3065660 *Mar 11, 1960Nov 27, 1962Ray Puterbaugh CharlesFastener for license plates and the like
US3666258 *Oct 9, 1970May 30, 1972Gaudry Paul EElectric motor brush spring
US3905141 *Jan 21, 1974Sep 16, 1975Jr Sidnor Tebbs ChichesterLight fixture with luminous signs
US3905643 *Nov 2, 1973Sep 16, 1975Mertens & Co KommanditgesellscSaddle
US4947502 *Mar 16, 1990Aug 14, 1990Boehringer Mannheim CorporationMethod of making a dynamic tension bone screw
US5620170 *Nov 22, 1994Apr 15, 1997Kabushiki Kaisha Tokai Rika Denki SeisakushoCoil spring supporting device
US5810505 *Jul 26, 1996Sep 22, 1998Kimball International, Inc.Double threaded fastener system
US6299367 *Apr 8, 1999Oct 9, 2001Seiko Epson CorporationCoil spring sheet-pressing member for sheet feeding mechanism
US6505387 *Sep 25, 2000Jan 14, 2003Cray Inc.Flexible fastener
US6527264 *Jul 9, 2001Mar 4, 2003Bernt SchroerTorsion spring for counter balancing weights particularly in sectional doors
U.S. Classification402/53, 402/58, 411/16, 267/179, 56/50, 411/438, 411/374, 267/69, 402/57, 267/180
International ClassificationB42F13/02
Cooperative ClassificationB42F13/02
European ClassificationB42F13/02