Cutting Guide Recess Geometry for Stable Seam Allowance Placement

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Solution Overview

Problem

Conventional cutting guides wobble or pivot on materials with seams, leading to irregular cuts and uncertain placement, as they lack a recess to accommodate seam allowances and means to fix their position during cutting.

Innovation Solution

A cutting guide with a recess of sufficient dimension to receive a seam allowance, allowing for stable engagement and fixing the guide's location relative to the material, preventing wobbling and ensuring uniform cuts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional cutting guide with a flat surface is used on material with a seam allowance, then the cutting guide can be placed on the material, but the cutting guide wobbles or pivots on the raised seam area, causing instability

Engineering Contradiction:

Improveplacement of cutting guideVSAvoidstability of cutting guide

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The cutting guide incorporates a recess specifically at the location where the seam allowance exists, creating a localized adaptation to the raised area. This recess allows the seam allowance to sit within it, providing a stable engagement point while the rest of the cutting guide maintains its flat surface for guiding the cutting tool.

Inventive Principle:

Principle #3Local quality

2Measurement precision

If visible marks on the cutting guide are used to determine placement, then the cutting guide can be positioned relative to stitching lines, but the placement is uncertain and the cutting guide may move from the determined location

Engineering Contradiction:

Improveplacement accuracyVSAvoidposition fixation

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The recess is pre-formed in the cutting guide at the appropriate location and dimension to receive the seam allowance. This preliminary preparation ensures that when the cutting guide is placed on the material, the seam allowance automatically engages with the recess, fixing the position of the cutting guide relative to the stitching line before cutting begins.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9138904B2Cutting guide with seam allowance recess

Publication Date: 2015.09.22 THOMAS PAUL

AI summary

A cutting guide having a seam allowance recess and methods of cutting a piece of material with such cutting guide.