US1726810A

US1726810A - Loose-leaf binder

Info

Publication number: US1726810A
Application number: US157466A
Authority: US
Inventors: James C Dawson
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-12-28
Filing date: 1926-12-28
Publication date: 1929-09-03
Anticipated expiration: 1946-09-03

Description

Sept. 3, 1929- I J. c. DAWSON v I 1,726,810

LOOSE LEAF BINDER Filed Dec. 28, 1926 A) 25 23 2171x5523 7: 61/7125 0', Dawson M 91/@{,

Patented Sept. 3, 1929;

JAMES c. Dawson, or w'n'nsrna GROVES, MISSOURI, ASSIGNOIR TO ELMA N. DAWSON,

F WEBSTER GROVES, MISSOURI.

LOOSE-LEAF BINDER.

Applicationflled December 28, 1926. Serial No. 157,466.

This invention relates to loose leaf binders, and has for its principal object to provide a novel binder assembly that can be applied to a variety of uses now imperfectly served by other structures, and which has particular advantages in connection with flexible back binders of the class now generally fitted with double headed screw devices.

Other objects and advantages of the in- ]0 vention will become apparent as the descrip panying drawings, in which Fig. 1 is aperspective view of a flexible back binder made according to this invention,

a portion of one leaf being-broken away and the binder mechanism being unfastened and slightly displaced;

, Fig. 2 is a side elevation of the metallic portion of the binder;

Fig. 3 is a plan View of the same; and

Figs. 4 and 5 are transverse sectional views on the planes indicated by the lines 44 and 55 of Fig. 3.

Referring to Figs. 1, 2, 3, 4 and 5, 1O indicates generallya flexible back equipped with

tongues

11 and 12, to which a stack of leaves are to be fastened. In devices now in general tion is read in connection with the accomuse these tongues are perforated and adjust-' able double headed screwsv are ,inserted' through the tongues and the sheets to be bound.

According to this invention such screws are replaced by binder mechanism including a lower binder bar 13, an upper auxiliary floating binder bar 14, and an upper binder bar 15. The

bars

13 and 14 are equipped with telescoping posts 16, the outer or. tubular sections 17 of which are carried by the bar 14. The bar 13 is fixed in suitable manner to the tongue 11, and the bar 15 is similarly fixed to the tongue 12.

A single locking post 18, carried by the bar 13, projects upwardly through perforations in the

bars

14 and 15, and has a head 19 for cooperation with a keyhole slot 20 in a latch bar 21, slidably mounted on the bar 15, by the pins 22 passing through the slots 23.

In order to prevent twisting in use the

bars

14 and 15 are interlocked by the simple expedient of providing one of them with notches 24, adapted to receive tongues 25 on the other.

The head 19 is preferably carried by a screw 26 (Fig. 5), threaded in the post 18, whereby the length of the latter may be varied, and hence the capacity of the binder may also be varied.

The relative positions of the parts when the binder is in use are illustrated in Figs. 4 and 5. When it is desired to remove a sheet or a stack of sheets, the latch bar 21 is operated to release the'head 19, when the upper binder bar 15, with its tongue and the corresponding portion of the back, may be swung to the left in Fig. 1 to a position entirely clear of the remainder of the mechanism. The auxiliary binder bar 14, with a portion or all of the leaves, may then be readily removed, and after the desired changes have been made it can be replaced without any interference of the bar 15 with the tongue 12.

The advantage of this structure, and other forms that will readily occur to those skilled in the art overthe double headed screws now in common use, will be apparent from the foregoing description and the drawings. Insofar as I am aware, this is the first binder mechanism applicable to flexible back binders that will permit sheets to be readily removed and replaced, and that can be relied upon in service.

I claim as my invention 1. In a loose leaf binder, a back, spaced tongues on the back, a lower binder bar secured to one of said tongues, posts on the lower binder bar adapted to extend through perforations in sheets to be bound, an upper binder bar secured to the other tongue, 2. floating auxiliary upper binder bar having posts telescoping with posts on the lower binder bar, projections on the ends of the upper binderbar engaging-notches in the ends of the auxiliary binder bar to hold said binder bars in alignment, and latch means carried by the upper binder bar for securing the bars in binding relation to sheets on the posts.

2. A commercial article comprising a lower binder bar, an auxiliary upper binder bar,

telescoping posts carried by said bars, a main I upper binder bar lying along the auxiliary binder bar, a locking post on the lower binder bar and projecting through the other bars,

er bar and projecting through the other bars,

and a latch bar slidably mounted on the upper binder bar and cooperating with the loc ing post to secure the bars together.

4. A loose leaf binder comprising top and bottom covers, a flexible back connecting the covers, upper and lower spaced tongues between the covers, a floating binder bar located between the tongues, two pairs of symmetrically disposed telescoping binder posts carried by the lower tongue and the floating binder bar, a centrally disposed locking post rising from the lower tongue, the floating binder bar and the upper tongue having openings aligned with the locking post, a

locking screw having threaded engagement with the locking post and having its upper end extending loosely thru said openings in.

the upper tongue and the floating binder bar, and a latch plate movably mounted on the upper tongue and having a locking engagement with the screw to prevent separation of the tongues.

t 5. A loose leaf binder comprising top and bottom covers, a flexible back connecting the covers, upper and lower spaced tongues between'the covers, a floating binder bar 10- catedbetween the ton ues, two pairs of symmetrically disposed te escoping binder posts carried by the lower tongue and the floating binder bar, a centrally disposed locking post rising from the lower tongue, the floating disposed above the latch plate, and of greater width than that of the narrow portion of the key-hole slot.

6. A commercial article com rising a lower binder bar, an upper binder er, a floatin binder bar disposed between the upper an lower binder bars, two pairs of symmetrically disposed telescoping posts carried by the lower binder bar and the floating binder bar, an internally screw threaded post rising from the middle of the lower binder bar, the floating binderba'r and the upper binder bar having aligned openings, a headed locking screw extending thru the openings in the upper floating binder bars and engaging the threaded interior of the locking post, and an endwise moveable latch bar mounted upon the upper binder bar and having a key-hole slot receiving the shafili of the locking screw.

7. Acommereial article comprising a lower binder bar, an upper binder bar, a floating binder bar disposed between the upper an lower binder bars, twopairs of symmetrically disposed telescoping posts carried by the lower binder bar and the floating binder bar, an

internally, screw-threaded post rising from the middle of the lower binder bar, the floating binder bar and the upper binder barhaving aligned openings, a headed locking screw extending thru the openings in the 11 per and floating binder bars and engaging the threaded interior of the locking post, and an end- 'wise moveable latch bar-mounted upon the upper binder bar and having a key-hole slot receivin the shank of-the locking screw, the floating inder bar and the upper binder bar having a projection and notch engagement to maintain the bars in alinement.

In testimony whereof I aflix my signature. I

JAMES C. DAWSON.