US1233104A - Loose-leaf book. - Google Patents

Description

J. W. MYATT.

LOOSE LEAF BOOK.

APPLICATION FILED JAN.23. 19H.

Patented July 10,1917.

2 5HEETS-SHEET 1 Patented July 10, 1917.

2 SHEETS-SHEET 2- Fig.5

ATTOR/VEXJ .UNITED @TATE% 'PATENT @FFIQE.

JOI-IN WILLIAM MYATT, 0F TIPTON, ENGLAND, ASSIGNOR T0 LEDGERS LIMITED, OF

TIP'I'ON, ENGLAND.

LOOSE-LEAF BOOK.

Specification of Letters Patent.

Application filed. January 23, 1917. Serial No. 144,080.

To all whom it may concern:

Be it known that I, JOHN WILLIAM MYATT, a subject of the King 'of Great Britain and Ireland, residing at 37 V1ctoria road, Tipton, in the county of Stafford, England, have invented certain new and useful Improvements Relating to Loose- Leaf Books, of which the following isa specification.

This invention relates to loose leaf books or binders of the type in which telescoplc members are employed between a pair of clamping bars for the attachment of the leaves, the object of the invention being to provide an improved construction which permits a greater extension of the sald members than those ordinarily employed.

This invention comprises the combination of three or more telescopic members, and an internally arranged cable which is attached to the middle member or one of them when more than three are used, enlargements being provided on the ends of the cable to limit the extensibility.

Referring to the two accompanying sheets of explanatory drawings Figure 1 is a perspective vlew of aloose leaf book or binder provided with this 1nvention. a

Fig. 2 is a cross section of the back of the binder through one of the telescopic members, the latter being shown closed, and Fig. 3 is a similar view showing the sa1d members extended.

Fig. 4: is a cross section of the back of the binder through one of the connecting screws by which the clamping bars are drawn together.

Fig. 5 is a plan of the back of the blnder.

In the construction of a loose leaf book or binder in accordance with this invention, a pair of hollow clamping bars a on each of which a hinged cover I) may be provided have attached to them two or more sets of telescopic rigid tubular members 0 preferably of metal to which the leaves are attached. Screw connecting posts 0? of any convenient form are also provided between the bars for securing them together and exerting the required clamping action on the leaves. In the form shown, each set of telescopic members comprises three parts arranged to nest or slide together, the outer one being fastened at one end to one of the clamping bars and the inner one fastened at the opposite end to the other clamping bar. Within the said members is arranged a connecting cable a which may consist of a length of wire, leather thong or other suitable means. The ends of the cable are formed or provided with enlargements 7 to limit the extension of the members. One of the enlargements abuts against a flange f at the inner end of the inner tube and the other abuts against the clamping bar as shown in Fig. 3 when the members are extended. Also the intermediate tubular member is secured to the cable by the collar f brazed or soldered to the cable and to one end of said member, so that such telescopic member is unable to become detached from the other members. When the telescopic members are closed together one end of the cable bends over and slides within the clamping bar; the other lies in the inner tube. Any ordinary mechanism arranged in one of the clamping bars is employed to operate the screw connecting posts, such, for example, the skew or spiral gears d and C22 and key stem d In the form shown the inner screw is fixed to one of the bars and the other which is attached to the other bar is rotatable by the said mechanism. When the telescopic parts are fully extended the parts of the screw connecting posts are separated from each other. Two such posts are shown and these are situated between the telescopic members, but any other arrangement may be adopted.

By this invention a large amount of extensibility can be provided for and in any position a rigid support is obtained for the leaves during the changing operation.

When more than three telescopic members are used the cable is attached to one of the middle ones and any suitable provision is made to prevent disconnection of the others.

Having thus described my invention what I claim'as new and desire to secure by Letters Patent is 1. In loose leaf books or binders, the combination with a pair of clamping bars, of a plurality of telescopic members, an internally arranged cable attached to an intermediary member, and stops on the ends of the cable, substantially as described.

2. In loose leaf books or hinders, the combination with a pair of clamping bars, of a plurality of telescopic members, the outer and inner one of which are respectively se Patented July 10, I917.

cured to the said bars, an internally arranged cable attached to an intermediate member, a stop on one end of the cable coacting with one of the bars, and a stop on the other end of the cable co-acting With the inner telescopic member, substantially the inner one flanged internally at its outer end, a cable attached to the middle member, a stop on one end of the cable co-acting With one of the bars, and a stop onthe other end of the cable co-acting with the flangeonthe inner member, substantially as described.

Copies of this patent may be obtained for 4. In loose leaf books or binders, the combination comprising a pair of hollow clamping bars one of which contains clamping mechanism, a pair of internally screwed posts attached to one of the bars and rotatable by the said mechanism, a pair of screws secured to the other bar and arranged to detachably engage the posts, a plurality of sets of telescopic members the inner and outer ones of which are respectively secured to the two bars, an internally arranged cable attached to an intermediary member and adapted to slide in and out of one of the bars, and stops on the ends of the cable, substantially as described.

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

' JOHN WILLIAM MYATT.

five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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