Paper clip william d. middlebrook

The top of the block is provided with a steel face-plate D, above which is arranged the corresponding plate F, there being a small horizontal space between them in which the bending of the wire occurs. The winder A consists of a cylindrical portion having its bearing in the block. The upper face of this cylindrical portion is flush with the plate D, and from it rises a central pin at, having a bearing in an aperture in the upper plate F and a winding or bending projection a of the same height as the space between the two plates and located at one side of the cylindrical body of the winder and having a convex curved face on the side next the pin a.

A gear-wheel a is appliedto the shaft or cylindrical portion of the winder by a groove or feather connection which permits of the winder being lowered or raised. The winder B is similarly constructed, with the bending or winding projection 1 corresponding with the one a. The central pin 17, however, is mounted in a boss in the top plate F, so as to be capable of vertical movement, and has its lower end seated in a central aperture in the cylindrical part or shaft of the winder.

This winder is also provided with a gear-wheel b connected with it by a groove-and-feather connection, such as to permit of the winder being lowered and raised. The former O is similarly mounted in the block Y, so as to be capable of being lowered and raised, butis merely provided with a central pin 0, one side of which is grooved or cut away, as shown in' Fig.

The former C is formed at its lower end with an annular groove 0, in which lies the end 0, Figs. When the arm C is in the normal elevated position,it holds the former up in its normal elevated position; but when the arm 0' is depressed it carries the former down until the end or face of the pin cis flush with or below the upper face of the plate D.

The lower end of the cylindrical part of the winder A is formed with an annular groove a in which lies one end a of a projection extending from an arm G. The lower end of the cylindrical part of the winder B is similarly formed with an annular groove b ,which, however,is of considerably greater width than the corresponding annular groove of the winder A.

A second projection 19 from the arm or lever G extends into the groove b. The two projections a and b from the arm G are in the same horizontal plane,and the upper walls of the annular grooves a and b coincide or are in the same horizontal plane. Consequently when the arm or lever G is in its normal raised position the two winders A B are held in their normal elevated position, as shown in Fig.

WVhen, however, the arm G is moved downward, the first effect is to draw down the winder A until the end of its pin a is flush with or below the face of the plate D. A subsequent further downward movement of the lever G will similarly draw down the winder B until the end of the projection b thereon is flush with or below the face of the plate D.

The operation having reached the stage already described and the length of wire which has been severed lying between the plates D F and in the relation to the winders and former shown in Fig. The arm G, which projects from the rock-shaft G,is now partially moved downward by the action of the cam 42, causing the movement of the rock-shaft, as plainly illustrated.

Middlebrook of Waterbury, Connecticut. Middlebrook invented not just the paper clip but he also invented a machine to produce the paper clip. Cushman and Denison purchased the Middlebrook patent in Function:A paper clip is a device which holds several sheets of paper together by means of pressure: it leaves the paper intact and can be easily removed.

Patent, US issued November 7, Inventor:William D. Criteria:First practical. Modern prototype.. For centuries, straight pins, string and other materials were used as fasteners, but they punctured or damaged the papers. While the paper clip seems like such an obvious solution, its success had to wait for the invention of steel wire, which was "elastic" enough to be stretched, bent and twisted.

The first paper clip was invented in by Samuel Fay. Just look in you pencil case, desk or office drawers, and you might find a paper clip hidden inside. Just don't be that lady! I managed to line up these three paper clips perfectly, even though I put them on the piles of paper at different times throughout the day.

Paper clip william d. middlebrook

There was a problem submitting your report. Please contact Adobe Support. If you feel that this video content violates the Adobe Terms of Use , you may report this content by filling out this quick form. A second paper clip design was patented by Erlman J. Wright in This clip was advertised at that time for use in fastening newspapers.

Prior to , there were about 48 other paper clips patented. The modern paper clip was patented on November 9, , to William D. Middlebrook of Waterbury, Connecticut. Middlebrook invented not just the paper clip but also invented the machine to produce the paper clip.