Browse Prior Art Database

Paper Stretch Gage

IP.com Disclosure Number: IPCOM000086853D
Original Publication Date: 1976-Nov-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Oranchak, W: AUTHOR [+2]

Abstract

A paper stretch gage having improved accuracy can be constructed by providing a marking tool of greater mass and insuring that the marking points always penetrate the paper sheet vertically and to a uniform depth.

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Paper Stretch Gage

A paper stretch gage having improved accuracy can be constructed by providing a marking tool of greater mass and insuring that the marking points always penetrate the paper sheet vertically and to a uniform depth.

Referring to the figures, a gage body 1 has a pair of marking elements 2 which can be depressed to effect perforation of the paper sample beneath the gage. Each marking element comprises a plunger 3 having a collar 4 and an attached handle 5. The plunger has secured in the bottom thereof a needle point 6 projecting a desired distance from the end of the plunger. Spring 7 serves to return the plunger after depression. The plungers are held within gage body 1 by retaining plates 9. Each plunger is also fitted with a pin 10 vertically movable in a slot 11 to prevent rotation of the plunger.

Upon depression of the handles, the bottom surface of the plunger contacts the paper to be perforated and allows the needle to enter the paper only the distance that the needle extends beyond the bottom of the plunger. End slots 12 are provided for marking the paper with pen or pencil in the areas adjacent to needle points 6 to assist in locating the holes in the paper after the gage is removed. The bottom of the gage is given a relatively rough surface, such as by heat blast, to minimize slippage during use.

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