US1742747A - Separable binding post - Google Patents

Description

Jan. 7, 1930. H. T. ADAMS SEPARABLE BINDING POST Filed July 1928 Patented Jan. 7, 1930 UNITED STATES HENRY 'I. ADAMS, OF CHICAGO, ILLINOIS SEPARABLE BINDING rosr Application filed Jui 9,

This invention relates to securing means and, particularly, to that type of binding post employed in binders.

One of the primary objects of the invention is to provide a binding post of simple and cheap construction which will serve to secure papers in permanent binders, and which embodies means enabling the post to resist tensional strain and yet to be disengaged from the binder, when desired, in order that it may be used again in the'same or another binder.

The invention is described in the following specification and shown in the accompanying drawing, in which Figure 1 is a view in elevation of a permanent binder showing posts, embodying my invention, attached thereto, the opposite ends of the posts being shown; Fig. 2, a sectional view, the section being taken as indicated by line 2 of Fig. 1; Fig. 3, a vertical view of the inner member, showing a notched or beveled side at one end; Fig. 4:, a view in elevation of a locking member having a .25 notched or beveled side complementary to that of the inner member shown in Fig. 3;

and Fig. 5, a view in elevation of the outer' or tubular member.

In the illustration given, 1 represents the outer or tubular member which is provided at 1ts upper end with a flange 2. The numeral 3 represents the inner member which is also provided at one end with a flange or head 4. The inner member 3 at the end opposite the flange 4 is notched to provide an inclined or beveled side 5. A locking member 6, which is preferably of the same diameter as the inner member 3 and,in effect, may be a segment of the inner member 3, is also provided with an inclined or beveled side 7 which is complementary to the beveled side 5 of-the inner member 3. g

The angle of inclination of the sides 5 and 7 is preferably such that a slight pull upon r the inner member 3 will cause the members 3 and 6 to be pressed outwardly against the inner walls of the tubular member 1, as illustrated in Fig. 2.

' In the operation of the device, the outer or tubular member 1 is inserted through a per- 1928. Serial No. 291,426.

foration in the cover and paper. The member 6 is then placed upon the inner member 3 in such a way as to bring the complementary inclined sides 5 and 7 into contact. The inner member 3 and locking member 6, as thus assembled, are inserted through a perforation 1n the opposite cover and within the tubular member 1. The telescoping members 1 and 3 are then pressed together until the post is of the desired length. The pressure then exerted by the covers upon the flanged heads 2 and 4: of the telescoping members 1 and3 will cause the members 3 and 6 to move in opposite directions, as aresult of which the beveled sides will force members 3 and 6 against the inner walls of the tubular member 1 and thus will prevent the members 1 and 3 from being drawn further apart. It will be seen that the means illustrated permit the telescoping post members to be contracted but prevent their expansion by tensional force.

When it is desired to remove the binding post from the binder or to expand the telescoping members 1 and 3,21 small rod may be inserted through the opening at the flanged end of the tubular member, and by this means the segment or looking member 6 may be pushed against the inner member- 3 and the two members forced to any point along the tubular member 1 or maybe wholly removed therefrom. It will be observed that in this operation there is no expansion of the members 3 and 6 at the point where the sliding sides 5 and 7 contact.

The foregoing detailed description has been given for clearness of understanding only and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible,'in view of the prior art.

- WhatI regard as new, and desire to secure by Letters Patent, is:

1. In a'device of the character set forth, a binding post comprising an inner member having segments provided with complementary inclined sides and an outer member having a substantially smooth inner bore adapted to receive said inner member, said segments tending to expand against the walls of said outer member when tensional force is applied at either end of said binding post.

2. In a device of the character set forth, inner and outer telescoping members, said outer member having a substantially smooth inner bore and said inner member comprising segments having complementary beveled sides which cause the segments to expand against the walls of the outermember and prevent the telescoping members from yielding to tensional strain.

3. In a device of the character set forth, a binding post comprising a tubular member provided with a head, and an inner member adapted to reciprocate in said tubular member, said inner member being provided at one end with a head and at the other end with a notch, and a locking member formed with a notch complementary to the notch of the inner member and in engagement therewith. 4. A binding post comprising an inner member equipped at one end with a flange and having segments provided with complementary inclined sides and a tubular member equipped at one end with a flange and adaptedto receive said inner member, said tubular member having a substantially smooth bore and said segments tending to expand against the walls of said tubular member when tensional force is applied at either end of said binding post. I

5. Ina device of the character set forth, a pair of telescoping members, the inner one of which comprises post segments provided with complementary inclined sides which expand on being pulled outwardly butcollapse to permit removal of said inner post when pressure is applied to the outer end of one of said post segments.

HENRY T. ADAMS.

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