Page:Popular Science Monthly Volume 92.djvu/142

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��Popular Science Monthly

��Inserting Hard Fiber Plugs into Automobile Clutches

THE studs that disengage the dry plate clutch of a certain make of automobile are made of a softer material than the dis- engaging Jevers. This causes the plugs to

^. ... . CLUTCH LEVER

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��A fiber plug to take the place of a worn- out steel stud in an automobile clutch

wear rapidly, necessitating the replacing of them frequently.

To avoid the expense of purchasing new studs, we inserted hard fiber plugs to put the stud into proper condition again. These plugs were inserted into tapped holes, and when removing an old one it was merely necessary to drill out the larger portion and then force the balance out by running a tap through the threads. — Adolph Klein.

��A Loose-Leaf File in Which to Keep Photographic Films

THE filing case is made of a loose-leaf note-book, of a kind having the leaves held at one of the narrow edges, and in which they are as large as the films that are to be preserved. Holes that correspond in size and location with those in the leaves of the note-book should be punched into the margins of the films. The printing quality of the negatives suffers no injury from this operation, as the margins are blank.

Into the binder are inserted alternately a loose leaf and a film. On the face of each loose leaf may be written a complete record of the following film. By this arrangement each film is separated from the others, and is well protected. By in.serting at the beginning of the book an extra leaf on which an index is kept, and by numbering the leaves, any film may be instantly located.

Where a large number of films are to be preserved, it will be most practical to file

��them in separate binders, sorting them ac- cording to their descriptions, such as por- traits, landscapes, etc.

When any film is removed for printing, its accompanying record leaf should also be removed, to prevent the two from be- coming separated. — F. M. Wagner.

An Automatic Match Safe for ' Holding Box Matches

AVERY useful match safe can be made from any ordinary M-in. wood. It is convenient because after the cover is taken from a match box it can be slid right into the safe, and also, because it can be hung on the wall as well as set on a table or shelf. The dimensions on the accompanying il- lustrations are for H-in. stock and they should be slightly changed if the wood is of any other thickness. The accompanying illustrations show the construction of the safe as well as the dimensions.

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���Plans for making a match safe to hold a box of matches and to deliver them a few at a time at the bottom of the box

If a match scratcher is wanted on the safe, a piece of sandpaper may be glued to the top front piece.^G. Earle McCotter.

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