Shearing machine having multiple close adjustment devices

Details Shearing machine having multiple close adjustment devices Shearing machine having multiple close adjustment devices

1994-05-18

1996-01-16

Calvert, John J.

Textiles: cloth finishing

Cutting

Shearing

83349, D06C 1300

Patent

active

054837294

ABSTRACT:
A machine for shearing pile fibers from the surface of a textile fabric which is conveyed over the narrow edge of a cloth holder. The cutting is accomplished by a scissors-like action between a stationary cutting blade and a plurality of helical blades which are mounted on a roll which is rotated about a horizontal axis for moving the helical blades into cutting contact of the horizontal cutting edge of the stationary blade. The stationary blade is mounted on a holder which is pivotally mounted on a horizontal axis to enable the stationary blade holder to be pivoted by a drive mechanism to change the relative position of the cutting edge of the stationary blade relative to the cloth holder. The roller for the helical blades is mounted on a rotary blade holder which is supported on the stationary blade holder for movement with the stationary blade holder so that the cutting edges of both the stationary blades and the rotary blades and the helical blades move in unison relative to the cloth holder. The invention also includes apparatus for changing the relative portions of the cutting edge of the stationary blade relative to the cutting edges of the helical blades to compensate for wear of the blades and other conditions which may change the relative positions of the cutting edges of the blades from an ideal cutting relationship. The stationary blade is also provided with apertures to create an airflow through the stationary blade in conjunction with suction means which creates a vacuum in the cutting area. The machine also includes pile height adjusting mechanism for pivoting the stationary blade holder. Miniature video cameras are positioned at the ends of the machine for viewing on end the shearing area of the stationary and rotary blades where the cameras are connected to a video screen which enlarges the image of the cutting area for viewing by the operator and assisting the operator when making adjustment to various settings of the machine.

REFERENCES:
patent: 627342 (1899-06-01), La Fountain, Jr.
patent: 1349788 (1920-08-01), Sellers
patent: 2362770 (1944-11-01), Remington
patent: 2695438 (1954-11-01), Bejeuhr
patent: 3215179 (1965-11-01), Schill
patent: 3262483 (1966-07-01), Warnecke et al.
patent: 3769666 (1973-11-01), Kaufman
patent: 3908245 (1975-09-01), Buthe
patent: 3969797 (1976-07-01), Riedel et al.
patent: 4649606 (1987-03-01), Fay

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