US3910166A — Method and apparatus for the manufacture of filte…

Claim 1

Independent Claim 198 words

A method of manufacturing tobacco filters comprising the steps of: a. providing a web of filter material, said web having an elongated axis and being continuous in the direction of said axis; b. tensioning the web; c. spreading said web in a direction normal to said axis to a predetermined width; d. cutting the web along a line parallel to said axis to provide first and second sections, each of said sections having an elongated axis; e. feeding said first section of the web in a first axial direction in a flattened condition to a deposition position; f. delivering amounts of loose particulate material to the first section of the web at said deposition position in rows extending across said first section, said rows being spaced axially thereof; g. feeding said second section of said web in a second axial direction to bypass the deposition position and direct the second web section into overlying relation to the deposited particulate material and said first web section whereby said material is positioned at spaced intervals between said first and second sections; h. forming said first and second sections of said web and said particulate material into a cylindrical filter rod.

Claim 2

Independent Claim 198 words

A method of manufacturing tobacco filters comprising the steps of: a. providing a web of filter material, said web having an elongated axis and being continuous in the direction of said axis; b. tensioning the web; c. spreading said web in a direction normal to said axis to a predetermined width; d. cutting the web along a line parallel to said axis to provide first and second sections, each of said sections having an elongated axis; e. feeding said first section of the web in a first axial direction in a flattened condition to a deposition position; f. delivering amounts of loose particulate material to the first section of the web at said deposition position in rows extending across said first section, said rows being spaced axially thereof; g. feeding said second section of said web in a second axial direction to bypass the deposition position and direct the second web section into overlying relation to the deposited particulate material and said first web section whereby said material is positioned at spaced intervals between said first and second sections; h. forming said first and second sections of said web and said particulate material into a cylindrical filter rod.

Claim 3

Dependent Claim 21 words

A method as recited in claim 1 wherein said rows of particulate material are comprised of spaced deposits of particulate material.

Claim 4

Dependent Claim 33 words

A method as recited in claim 1 wherein said rows of deposited particulate material are comprised of a plurality of deposits of material spaced generally normal to the axis of said first section.

Claim 5

Dependent Claim 29 words

A method as recited in claim 1 including the further step of metering said particulate maTerial to provide the desired amount of material in each of said spaced rows.

Claim 6

Dependent Claim 24 words

A method as recited in claim 1 wherein said web material is selected from the group consisting of paper, bulk yarn, and filamentary tow.

Claim 7

Dependent Claim 18 words

A method as recited in claim 1 wherein the feeding of said web and said sections occurs continuously.

Claim 8

Dependent Claim 18 words

A method as recited in claim 1 wherein the feeding of said web and said sections occurs intermittently.

Claim 9

Dependent Claim 20 words

A method as recited in claim 1 wherein the web is cut into first and second sections of equal width.

Claim 10

Dependent Claim 42 words

A method as recited in claim 1 including the step of creating a low pressure area beneath said web in the area of deposition of said loose particulate material to assist in deposition and retention of said material in the desired position.

Claim 11

Independent Claim 165 words

An apparatus for manufacturing tobacco smoke filters comprising: a. means for tensioning a web of filter material and spreading said web to a predetermined width, said web having an elongated axis and being continuous in the direction of said axis; b. means operatively associated with said tensioning and spreading means for cutting said web in a direction parallel to said axis to divide the web into first and second sections, each of said sections having an elongated axis; c. means for transporting said first section in a first direction; d. means for depositing loose particulate material on the upper surface of said first section of said web in rows across said section, said rows being spaced axially thereof; e. means for transporting said second section into adjacent overlying relation to said first section and said loose particulate material at a point after deposition of said material and; f. means for forming said first and second sections and said particulate material into a cylindrical filter rod.

Claim 12

Independent Claim 165 words

An apparatus for manufacturing tobacco smoke filters comprising: a. means for tensioning a web of filter material and spreading said web to a predetermined width, said web having an elongated axis and being continuous in the direction of said axis; b. means operatively associated with said tensioning and spreading means for cutting said web in a direction parallel to said axis to divide the web into first and second sections, each of said sections having an elongated axis; c. means for transporting said first section in a first direction; d. means for depositing loose particulate material on the upper surface of said first section of said web in rows across said section, said rows being spaced axially thereof; e. means for transporting said second section into adjacent overlying relation to said first section and said loose particulate material at a point after deposition of said material and; f. means for forming said first and second sections and said particulate material into a cylindrical filter rod.

Claim 13

Dependent Claim 68 words

An apparatus as recited in claim 10 wherein said cutting means is comprised of a cutting wheel and a roller, said cutting wheel being positioned in abutting relation to said roller and each being rotatable about an axis normal to the axis of said web whereby said web is fed between said cutting wheel and said roller, the cutting wheel serving to divide said web into two sections.

Claim 14

Dependent Claim 46 words

An apparatus as recited in claim 10 wherein said means for transporting said first section includes a pair of roller means in spaced relation on opposite sides of said deposition means for guiding and moving said first section through said deposition means in a flattened condition.

Claim 15

Dependent Claim 52 words

An apparatus as recited in claim 12 wherein said transporting means further includes a continuous tape extending beneath and at least between the pair of roller means, whereby the first web section is fed between said tape and said rollers and rests on said tape during its movement through the deposition means.

Claim 16

Dependent Claim 34 words

An apparatus as recited in claim 12 wherein said means for transporting said second section directs said section over said deposition means and into overlying relation to said first section and said particulate material.

Claim 17

Dependent Claim 44 words

An apparatus as recited in claim 14 wherein said second web section transporting means includes the same roller means utilized for guiding and transporting the first web section after deposition, whereby movement into said overlying relation occurs at the point of said roller means.

Claim 18

Dependent Claim 89 words

An apparatus as recited in claim 15 wherein said first and second web section transporting means further includes a delivery roll between the cutting means and the deposition means and a pair of guides, the first of said guides being positioned to direct said second web section from said roll to the roller means on the opposite side of said deposition means and said other guide being positioned to direct said first web section from said roll to the roller means on the same side of said deposition means.

Claim 19

Dependent Claim 44 words

An apparatus as recited in claim 10 wherein said deposition means is comprised of a rotatably driven cylinder having a plurality of axially spaced sets of recEsses, each of said sets comprising a plurality of recesses defined at spaced positions circumferentially of said cylinder.

Claim 20

Dependent Claim 56 words

An apparatus as recited in claim 17 wherein said deposition means further includes a hopper operatively mounted above said cylinder, said hopper having a plurality of openings spaced in alignment with said sets of recesses whereby the rotation of said cylinder brings said recesses into alignment with the openings to supply particulate material to said recesses.

Claim 21

Dependent Claim 39 words

An apparatus as recited in claim 10 further comprising means for providing a low pressure area beneath the web at the area of deposition of the particulate material to assist in depositing and retaining the material on the web.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-10-06	1979-04-07	1979-10-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-10-06	1983-04-07	1983-10-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-10-06	1987-04-07	1987-10-07	$7700.00	Window Closed / Lapsed

Method and apparatus for the manufacture of filter rods containing particulate material from a split web of filter material

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