Knots and knot tying – Hand implements
Patent
1987-05-18
1988-09-06
Rimrodt, Louis K.
Knots and knot tying
Hand implements
139 1R, 139 4, 289 181, D03J 300, B65H 6904
Patent
active
047688149
ABSTRACT:
The carpet-knotting apparatus comprises a head (1) solid with a guiding rod (7) and carrying a buckle (8). It also comprises a movable unit (12 to 16) composed of a control handle (12) made in one piece with a bar (13), to which two hooks (15, 16) are jointed. A ball (27) is located between the rod (7) and the handle (12). That ball is girled by the edges of an opening (29) of a sleeve (28), which a spring (30) keeps in contact with a ring (22). That ring forms part of a releaser (20) which extends through head (1). At rest and when the buckle (8) enters the canvas (32, 33, 34), the sleeve (28) wedges the ball (27) between the notch (24) and the wall of the groove (25), thereby locking the movable unit with respect to the head (1). When the buckle (8) fully crosses the canvas, the releaser (20) is pushed by the latter. The ring (22) moves the sleeve (28) which conceals the ball (27) on the bottom of the notch (24). The unit (12 to 16) then slides toward the head (1), while it hooks (15, 16) grip the ends of a pile thread engaged in the lodgings (4, 5) of the head (1), pushing them through openings of the canvas on either side of strands (33) and finally introducing them into the buckle (8). By removing the apparatus from the canvas, the buckle (8) draws those ends between the strands (33) thus tying the Smyrna stitch.
REFERENCES:
patent: 2873766 (1959-02-01), Jeandupeux
patent: 3467145 (1969-09-01), Jeandupeux
patent: 4423894 (1984-01-01), Kaufmann
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