Method and device for trimming and end-rounding bristles
AssigneeGillette Canada Inc.
InventorsJohn K. Philipp, Jeffrey S. Meessmann, James A. Goranson
Life of this patent
Estimating the term…
Abstract
A method of trimming and end-rounding bristles and a device for carrying out the method are provided. The method includes providing a group of elongated continuous filaments arranged so that the longitudinal axis of each of the filaments is substantially parallel to the longitudinal axes of the other filaments and so that the ends of the filaments define a plane; advancing the group of filaments to an end-rounding device; end-rounding the group of filaments; and cutting the filaments to define a bundle of end-rounded filaments having a predetermined length.
Claims24
A method for trimming and end-rounding bristles comprising:
- (a) providing a group of elongated continuous filaments arranged so that the longitudinal axis of each of the filaments is substantially parallel to the longitudinal axes of the other filaments;
- (b) providing a device for trimming and end-rounding bristles comprising:
- a filament advancing device constructed to receive the filament group from the guide structure and advance the group of filaments, comprising a first pair of jaws that are fixed against vertical movement, and a second pair of vertically movable jaws, each of said first and second pairs of jaws being movable between an open position in which the group of filaments is axially movable with respect to the jaws and a closed position in which the jaws grasp the group of filaments;
- an end-rounding device positioned to engage the ends of said elongated filaments when delivered by said guide structure and to end-round said ends;
- and
- a cutter constructed to cut said filaments at a predetermined distance from said end-rounded ends to form a cut bundle of bristles of predetermined length;
- (c) with the first pair of jaws in the open position, closing the second pair of jaws to grasp the group of filaments;
- (d) moving the second pair of jaws vertically to advance the group of filaments to an end-rounding device;
- (e) contacting the free ends of the filament group with the end-rounding device to end-round the group of filaments;
- and
- (f) cutting the filaments with the cutting device, to define a bundle of end-rounded bristles having a predetermined length.
A device for trimming and end-rounding bristles comprising:
- a guide structure constructed to deliver a plurality of continuous elongated filaments in the form of a group arranged so that the longitudinal axis of each of the filaments is substantially parallel to the longitudinal axes of the other filaments;
- a filament advancing device constructed to receive the filament group from the guide structure and advance the group of filaments, comprising a first pair of jaws that are fixed against vertical movement, and a second pair of vertically movable jaws, each of said first and second pairs of jaws being movable between an open position in which the group of filaments is axially movable with respect to the jaws and a closed position in which the jaws grasp the group of filaments;
- an end-rounding device positioned to engage the ends of said elongated filaments when delivered by said guide structure and to end-round said ends;
- and
- a cutter constructed to cut said filaments at a predetermined distance from said end-rounded ends to form a cut bundle of bristles of predetermined length.
A device for trimming and end-rounding bristles comprising:
- a guide structure constructed to deliver a plurality of continuous elongated filaments in the form of a group arranged so that the longitudinal axis of each of the filaments is substantially parallel to the longitudinal axes of the other filaments and so that the ends of the filaments define a plane;
- a filament advancing device constructed to receive the filament group from the guide structure and advance the group of filaments;
- an end-rounding device positioned to engage the ends of said elongated filaments when delivered by said guide structure and to end-round said ends;
- and
- a cutter constructed to cut said filaments at a predetermined distance from said end-rounded ends to form a cut bundle of bristles of predetermined length;
- wherein the guide structure, filament advancing device, end-rounding device, and cutting device are substantially vertically aligned.
Dependencies are inferred from the claim text.