US2014994A

US2014994A - Loose leaf book

Info

Publication number: US2014994A
Application number: US677492A
Authority: US
Inventors: Stone Howard Britten
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-07-06
Filing date: 1933-06-24
Publication date: 1935-09-17
Anticipated expiration: 1952-09-17

Description

Sept. 17, 1935. H. B. STONE 2,014,994

LOOSE LEAF BOOK xmmon m? m 2" Howard B. Stone 'some of the parts are moved when the clamping Patented Sept.'17, 1935 UNITED STATES PATENT OFFICE LOOSE LEAF BOOK Howard Britten Stone, Croydon, England Application June 24, 1933, Serial No. 677,492

In Great Britain July 6, 1932 9 Claims.

-' holding relative positions by a spring or springs.

According to this invention each clamping bar of hollow construction has sheet aligning posts extending perpendicularly therefrom and mounted so as to be slidable along the bar in the longitudinal direction of the bar. In addition, sheet aligning posts may be provided in fixed positions. The sheet aligning posts are of the usual construction each comprising parts slidable one within the other.

The slidable sheet aligning posts can be carried on sliders guided within the hollow clamping bars, the slider in each clamping bar having attached thereto one end of a cord which after passing through a hollow sheet aligning post is fixed at its opposite end to a slider in the opposite clamping bar.' The sliders are thus connected in pairs. In analternative arrangement a separate cord is provided for each slider, the opposite end of the cord being, for example, secured to a convenient part of the opposite clamping bar to that in which the slider is movable.

In the accompanying drawing:

Figure 1 is a view of clamping bars in accordance with this invention in their sheet holding relative positions, and

Figure 2 shows a section on the line 2-2, Figure 1.

Figures 3 and 4 are views respectively similar to Figures 1 and 2 showing the positions to, which bars are moved to positions further apart than in Figure 1 in order to release the sheets.

Figure 5 is a diagram illustrating the manner in which sheets or leaves are held between the clamping bars.

Figure 6 is a detail section taken on the line 66 of Figure 1, and

Figure '7 is a view similar to Figure 2, illustrating a modified arrangement of the sliders and cords whereby the sliders are moved.

' As shown in this drawing, the clamping bars are of hollow construction comprising an inner wall or plate a and an outer wall or plate bof curved cross section with flanged or channeled edges which can beslid on to the plate a. longitudinally,'for convenience of construction, allowing parts hereinafter described to be assembled with the inner walls or plates and the assembly completed'b'y putting the outer walls or plates 1) in position on the inner walls or plates.

Each plate a has hollow or tubular sheet aligning posts c rigidly attached thereto, the posts of one plate being slidable within corresponding posts attached to the opposite plate. Springs 11 extending through the tubular posts 0 and con- 5..

cealed therein have their opposite ends anchored by cross bars e, the tension of the springs being sufficient to draw the clamping bars together with a force capable of holding the sheets or leaves introduced between the said clamping bars 10 clamping bar. The posts J are movable in longitudinal slots h in the plates a, each of the posts carried by one slider being slidable in or on a corresponding post carried by the other slider.

Springs 2' passing through the posts I are an- 20 chored to the sliders g by cross bars 7' and supplement the springs d. Springs is are in tension between their attachment to the sliders and their attachment to hooks l on the plates (1., to move the sliders in the same direction, each towards a cor- 25 responding end of its path of movement, that is to say, into the position in which the sheet aligning and locking post 7 carried thereby is operative as a sheet locking means. The paths of movement of the sliders are limited by the engage- 39 ment of the posts 7 with the end walls of the slots h which thus serve as abutments for arresting movement of the sliders.

, A separate cord m is attached to the end of each slider remote from the springs k and passed 35 through one pair of posts 0, blocks nwith round-' ed ends being provided to minimize wear at the places where the direction of the cord is changed on emerging from within the said posts. The

opposite ends 121. of said cords m are secured by 40 fastenings m to plates at. In this way, each cord m is secured to a slider in one clamping bar and to the plate a. of the other clamping bar.

When the clamping bars are close together, that is to say, when they are in the sheet holding positions, the sliders g are drawn to one end of their respective paths of movement by the springs 7c and at such times the cord or cords m, are slack, as shown in Figures 1 and 2. These cords are preferably made of a relatively inextensible 0 material such as wire. When the clamping bars are moved farther apart, as shown in Figures 3 and 4, the reach of the cord within the posts 0 is lengthened and the reach at the end of a cord attached to a slider is shortenedso that the spring is is stretched and the slider moved to a new position, the posts moving in the slots h. When the clamping bars are drawn together by the springs d, i the cords are slackened so that the springs can retract the sliders Q.

As shown in the drawing, the ends of the cords m are threaded through holes in the sliders g and are prevented from being drawn entirely out of the holes by knots in the cord or other enlargements. The cords, as shown in Figure l, are of a convenient length to allow the bars to be moved some distance apart without effecting movement of the sliders against the action of the springs.

In the arrangement shown in Figure 7, two sliders g each carrying a post 1' are drawn one towards the other by a spring 7c. The sliders g with their posts are drawn apart by cords m the ends of each cord being attached to sliders in opposite clamping bars by means of the cords being threaded through holes in the lugs m of the sliders and having enlargements at the ends to prevent the cords from being drawn entirely out of the holes. As the posts 1 are moved in opposite directions slots in the sheet to be held thereby corresponding to the slot q are appropriately arranged to allow such movement.

Sheets 0 for use with the clamping bars and the aligning and locking posts in accordance 'with this invention, are provided with straight slots p to engage on the posts 0 and angular slots q to engage on the posts I, as shown in Figure 5. When the clamping bars are drawn apart as in Figures 3 and 4, the posts 1 occupy the positions shown in full lines and the slots p, q can be placed on the posts 0 and f by a sliding movement of the sheet 0. When the clamping bars move one towards the other to grip the sheets, the posts 1 are moved by the springs k to the positions shown in broken lines, the said posts I moving into the parts of the angular slots parallel to the edge of the sheets and the edges of the slots abutting against the posts 1 thus afford a further means for retaining the sheets between the clamping bars.

The clamping bars may be moved apart against the action of the springs d, i by suitable lever mechanism comprising jaws for engaging the inner sides of the clamping bars, or the latter may have holes therein to receive pins project-.

ing from a suitable tool or implement for effecting a separation of the clamping bars against the action of the springs to a sufiicient distance to release the sheets from the clamping action of the bars or to permit the introduction of new sheets. 7

ll claim:

1. Mechanism for gripping and holding the loose sheets of loose-leaf books, comprising hollow clamping bars, plates, respectively, slidable longitudinally one within each hollow bar, hollow sheet aligning and locking posts carried by the said slidable plates and extending between and movable longitudinally of the clamping bars to lock the loose sheets in their held positions, and springs for moving the clamping bars to and holding them in their sheet holding positions, said springs being concealed within the sheet aligning posts.

2. Mechanism for gripping and holding the loose sheets of loose-leaf books, comprising clamping bars, sheet aligning posts extending between and secured directly to the clamping bars, sheet aligning and locking posts extending between and movable longitudinally of the bars,

plates carrying the said sheet aligning and looking posts and mounted in and slidable longitudinally of each clamping bar, springs for urging corresponding ends of corresponding plates in opposite clamping bars in the same direction, and cords connecting the plates in one clamping bar with the plates in the other clamping bar, said cords passing through the sheet aligning posts secured directly to the clamping bars.

3. Mechanism for gripping and holding the loose sheets of loose-leaf books, comprising clamping bars, sheet aligning posts extending between and secured directly to the clamping bars, sheet aligning and locking posts extending between and movable longitudinally of the bars, plates carrying the said aligning and locking posts, one of said plates being mounted in and slidable longitudinally of each clamping bar, springs for urging corresponding ends of the corresponding plates in opposite clamping bars in the same direction, cord attaching fastenings in each clamping bar, and cords each connecting' a slidable plate in one clamping bar to a cord attaching fastening within the opposite clamping bar, said cords passing through the sheet aligning posts secured directly to the clamping bars.

4. Mechanism for gripping and holding the loose sheets of loose-leaf books, comprising clamping bars, sheet aligning posts extending between and secured directly to the clamping bars, sheet aligning and locking posts extending between and movable longitudinally of the bars,

plates carrying the said aligning and locking posts and mounted in and slidable longitudinally of each clamping bar, springs for urging corresponding ends of corresponding plates in opposite clamping bars in the same direction, cords connecting the slidable plates in one clamping bar with the plates in the other clamping bar, said cords passing through the sheet aligning posts secured directly to the clamping bars, and wear blocks provided to support the cord or cords at parts where the direction of the same changes.

5. A loose-leaf book comprising clamping bars, sliders movable longitudinally of the clamping bars, sheet aligning posts on said sliders, cord attaching fastenings in each clamping bar and cords respectively secured at one end to a corresponding slider carried by one clamping bar and secured at the other end to the fastening carried in the other clamping bar.

6. A loose-leaf book comprising clamping bars, sliders movable longitudinally of the clamping bars, sheet aligning posts on said sliders, cord attaching fastenings in each clamping bar, springs urging the sliders each towards one end of its path of movement, parts on the bars and sliders for limiting the movements of the sliders, and cords respectively secured at one end to a corresponding slider carried by one clamping bar and secured at the other end to the fastening carried in the other clamping bar.

'7. A loose-leaf book comprising oppositely arranged clamping bars, sheet aligning posts in pairs one slidable within the other respectively secured to opposite clamping bars, sliders movable longitudinally of the clamping bars, additional sheet aligning posts in pairs one slidable within the other respectively attached to the sliders carried by opposite clamping bars, and springs urging the sliders each towards one end of its path of movement, and parts on the bars and sliders for limiting the movement of the said sliders.

8. A loose-leaf book comprising oppositely arranged clamping bars, sheet aligning posts in pairs one slidable within the other respectively secured to opposite clamping bars, sliders movable longitudinally of the clamping bars, additional sheet aligning posts in pairs one slidable within the other respectively attached to the sliders carried by opposite clamping bars, springs urging the sliders each towards one end of its path of movement, parts on the bars and sliders for limiting the movement of the said sliders, and cords extending between opposite clamping bars for moving the sliders against the action of the springs.

9. Mechanism for gripping and holding the loose sheets of loose-leaf books, comprising clamping bars, sheet aligning posts extending between and secured directly to the clamping bars, sheet aligning and locking posts extending between and movable longitudinally of the clamping bars, plates carrying the said aligning and locking posts and mounted inand slidable longitudinally of said clamping bars respectively, springs for urging the plates in opposite clamping bars in the some direction, cord attaching fastenings in each clamping bar, cords each connecting a slidable plate in one clamping bar to a cord attaching fastening within the opposite clamping bar, said cords passing through the first mentioned sheet aligning posts, and wear blocks provided to support the cord or cords at parts where the direction of the same changes.

HOWARD BRITTEN STONE.