Brush filling method and filled brushes
AssigneeL.A. Brush Manufacturing Corp.
InventorsAnthony C. Boland, George R. Maxwell
Life of this patent
Estimating the term…
Abstract
A brush filling process employs longitudinally axially spaced rotary heads, and a core and includes the steps: (a) releasably coupling three of the brush cores to two of the heads, with the cores spaced about the axis, (b) rotating at least one of the heads about the axis, to rotate the cores between three index positions, (c) forming bristle receiving holes in a core at one of the positions, (d) filling bristles into the holes at a second of the positions, and (e) trimming the filled bristles at a third of the positions.
Claims34
In a brush filling process employing longitudinally axially spaced rotary heads defining an axis of rotation, and brush cores, the steps that include:
- (a) releasably coupling each of three of said brush cores to two of the heads, with the cores spaced about the said axis,
- (b) rotating at least one of the heads about said axis, thereby rotating the cores between three index positions,
- (c) forming bristle receiving holes in a core at one of said positions,
- (d) controllably and interruptedly rotating the core at a second of said positions, and filling bristles into the holes in the core at said second position thereby defining filled bristles projecting from said holes,
- (e) trimming the filled bristles outwardly of the holes in a core that is rotating at a third of said positions, and coupling a drive through a particular head after stopping said rotation of all of the heads about said axis of rotation, thereby independently transmitting rotation to the core at said third position while keeping said particular head in fixed, non-rotating position,
- (f) said cores consisting of synthetic resin,
- (g) each core being annularly elongated, and including stapling the bristles to the core, within said holes, at said second position, by employing staples which are introduced into said holes after portions of the bristles are filled into the holes.
In a brush filling process filling bristles into cores which are cylindrical and axially longitudinally elongated, and employing rotary heads and rod means including rods, the steps including:
- (a) locating three of the rotary heads to be longitudinally spaced and positioned to have a common axis of rotation, one of the heads being axially adjustable relative to the other two, and locating said rod means including said rods to interconnect said other two heads, so that said one head is axially adjustable along the rods,
- (b) releasably and simultaneously coupling each of three of the cores to two of the heads, which include said one head and with the cores spaced about the axis, and extending in axially parallel relation,
- (c) rotating at least one of the heads about said common axis, thereby bodily rotating the three heads and three cores between three index positions, with each core maintaining its original axial orientation in each index position,
- (d) drilling bristle receiving holes in a core that is stationary at a first one of said positions,
- (e) filling bristles into the holes in a core at a second of said positions, and while that core is stationary,
- (f) trimming the bristles filled into the holes in a core, at a third of said positions, and while that core is rotating,
- (g) simultaneously rotating the cores at said first and second positions and relative to the heads, so that holes are drilled at circularly spaced locations, and bristles are filled into said holes,
- (h) said common axis of rotation being a generally horizontal axis, about which all of said heads rotate between said rotary index positions, and including maintaining the rotary heads horizontally axially spaced apart, said rod means including axially elongated supports interconnecting the heads, to rotate therewith,
- (i) said other heads including first and second heads interconnected by said elongated rods, and said one head comprising an auxiliary head which is located to be supported on said rods between said first and second heads, and moving said auxiliary head generally horizontally lengthwise on said rods and relative to said first and second heads, thereby accommodating connection of different length cores to the first and auxiliary heads, via couplings defined by said first means,
- (j) and continuously rotating the core in said third position by transmitting drive through one of the other two heads to the core at said third position, and thereafter deactivating said drive so that rotation of said one of the other two heads is then made possible.
Dependencies are inferred from the claim text.