Cutting – Processes – Plural cutting steps
Patent
1992-06-01
1995-04-11
Jones, Eugenia
Cutting
Processes
Plural cutting steps
83 56, 834671, 83581, 83648, 30289, B26B 2906
Patent
active
054047781
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a cutting guide and more particularly to a cutting guide for use in making a cut in a flexible sheet member, such as a carpet. The cutting guide is of especial value when a neat and tidy seam or joint is to be provided between two portions of carpet. The invention also extends to a method of using the guide.
BACKGROUND OF THE INVENTION
In my patent application PCT/GB 88/00805 Agents ref 2718 PCT, I have described and claimed a guide for use in making a cut in a flexible sheet member such as a carpet, the guide comprising a base having a substanitally flat upper surface portion, an elongate channel to receive a cutting device such as the blade of a knife, extending adjacent the upper surface portion, the flexible sheet being arranged in use to overlie the upper surface portion and the channel, wherein an inner side wall of the channel extends at an oblique angle to the upper surface portion and the cutting device in use is urged towards that inner side wall to produce a cut which is at an oblique angle to the plane of the sheet.
When the guide is used to form a seam between two portions of carpet, skill is required by the user to ensure that the cut edges are parallel to one another and are correctly spaced apart, so that when the guide is removed, the cut edges fall together and abut each other.
It is one object of the invention to avoid or minimize that problem.
SUMMARY OF THE INVENTION
According to one aspect of the invention, there is provided a guide for use in making a cut in two flexible sheet members such as carpets which are to be placed in edge to edge contact, the guide comprising a base having a substantially flat upper surface portion, an elongate channel extending adjacent the upper surface portion to receive the blade of a cutting device such as a knife, a side wall of the channel being at an oblique angle to the upper surface portion, wherein a substantially vertical wall portion extends longitudinally along the base substantially in vertical alignment with, and parallel to the mouth of the channel.
Preferably the base comprises an upper and a lower portion which include releasable interengaging means so as to be movable relative to each other in the direction of their length, the upper surface portion and the channel are located on the upper base portion, and the vertical wall is located on the lower base portion.
In another aspect of the invention there is provided a method of joining two portions of carpet or like sheet material in side-by-side relationship comprising the steps of: first portion of carpet; the oblique inner side wall while drawing the knife along the channel; adjacent the cut edge of the first carpet portion; inserting the blade therein, drawing it therealong and discarding the marginal strip thereby produced; together;
In this way, the lower base may be retained adjacent a cut edge of the first portion of carpet while the upper base portion is moved along underneath the second portion of carpet to thereby ensure that the cut edges always remain parallel to one another.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be better understood it will now be described with reference to the accompanying diagrammatic drawings in which:
FIG. 1 is a perspective exploded view of a cutting guide of the invention;
FIG. 2 is an end view of the guide of FIG. 1 at a stage of use; and
FIG. 3 is the same as FIG. 2 at a further stage of use.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. 1 a cutting guide comprises an elongate lower base portion 1 having a substantially flat underside 2. One longer side of the lower base 1 defines a ramp portion 3 which is inclined upwardly from one side edge 2A of the base 1. The opposing side of the base defines a vertical wall 4. The upper surface 5 of the base 1 is generally parallel to the underside 2, but is formed with an integral rail 6 which extends along the length of the base 1 and is generally of a broad "T"-shape in cross-section. The end face 7 of the lower base 1 may include int
REFERENCES:
patent: 3768357 (1973-10-01), McBride
patent: 4096631 (1978-06-01), Ward
patent: 4505039 (1985-03-01), Donovan
patent: 4646439 (1987-03-01), Squires
Duralay Limited
Jones Eugenia
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