US3898919A — Sheet perforator having means for reinforcing the…

Claim 1

Independent Claim 337 words

The combination of a support frame, means on said frame for rotatably supporting a supply roll of tape having pressuresensitive adhesive on one side, means for feeding said tape stepby-step including a feed roller to which said tape separably adhesively adheres and having stub shafts at its end rotatably mounting said roller in said frame, means to rotate said roller step-by-step including a feed gear rotatable on one of said stub shafts, a drive shaft rotatably mounted in said frame, a gear quadrant keyed on said drive shaft and meshing with said feed gear so as to rotate said feed gear alternately in opposite directions upon oscillation of said drive shaft, and oppositely wound helical torsion springs each mounted on one stub shaft in frictional contact therewith, one spring having an offset end extension and said feed gear having an arcuate slot into which said offset end extends so that the feed gear has a limited degree of rotation in each direction without contact of the slot ends with said offset end extension, said springs being arranged to tighten on and grip the shaft and rotate said feed roller in the direction to pull the tape from said roll upon engagement of one end of slot with said offset end extension and said spring being released from said shaft upon rotation of said gear in the opposite direction, and the other spring having an offset end extension secured in said frame and the spring being arranged to tighten on and grip its stub shaft upon rotation of said feed gear in said opposite direction and thereby hold the feed roller against backward rotation, said drive shaft and said gear quadrant being normally disposed in a neutral position and rotatable firsly in the direction to actuate the feed roller to feed a predetermined length of tape, and secondly in the opposite direction while the feed roller is held stationary against rotation and thirdly back to neutral while the feed roller remains stationary ready for the next feeding movement.

Claim 2

Dependent Claim 337 words

The combination of a support frame, means on said frame for rotatably supporting a supply roll of tape having pressuresensitive adhesive on one side, means for feeding said tape stepby-step including a feed roller to which said tape separably adhesively adheres and having stub shafts at its end rotatably mounting said roller in said frame, means to rotate said roller step-by-step including a feed gear rotatable on one of said stub shafts, a drive shaft rotatably mounted in said frame, a gear quadrant keyed on said drive shaft and meshing with said feed gear so as to rotate said feed gear alternately in opposite directions upon oscillation of said drive shaft, and oppositely wound helical torsion springs each mounted on one stub shaft in frictional contact therewith, one spring having an offset end extension and said feed gear having an arcuate slot into which said offset end extends so that the feed gear has a limited degree of rotation in each direction without contact of the slot ends with said offset end extension, said springs being arranged to tighten on and grip the shaft and rotate said feed roller in the direction to pull the tape from said roll upon engagement of one end of slot with said offset end extension and said spring being released from said shaft upon rotation of said gear in the opposite direction, and the other spring having an offset end extension secured in said frame and the spring being arranged to tighten on and grip its stub shaft upon rotation of said feed gear in said opposite direction and thereby hold the feed roller against backward rotation, said drive shaft and said gear quadrant being normally disposed in a neutral position and rotatable firsly in the direction to actuate the feed roller to feed a predetermined length of tape, and secondly in the opposite direction while the feed roller is held stationary against rotation and thirdly back to neutral while the feed roller remains stationary ready for the next feeding movement.

Claim 3

Dependent Claim 141 words

The combination as defined in claim 1 with the addition of spaced apart guide elements between said supply roll and said feed roller to stretch a length of tape horizontally between said guide elements, a die and a plunger to receive said length of tape therebetween and having coactive cutting edges to punch said length of tape, means on said frame to guide said plunger and to bias said plunger into normal spaced relation to said die, and a cam on said drive shaft to actuate said plunger and force its cutting edge into coaction with the cutting edge of said die with said length of tape between said plunger and said die in timed relation to the feed of said tape and while said feed roller is held stationary against backward rotation thereby to punch a disk from said tape.

Claim 4

Dependent Claim 107 words

The combination as defined in claim 2 with the addition of a coaxial reduced extension on the end of said plunger having a cutting edge and being encircled by a shoulder on the plunger, and a second die coaxial with and beneath the first die to receive a piece of paper between the dies, said cam being formed to continue actuation of said plunger to cause coaction of said extension and said shoulder of the plunger and said second die and punch alined holes in said disk and said piece of paper and adhesively apply the resultant ring of tape to the paper in one continuous operation.

Claim 5

Dependent Claim 38 words

The combination as defined in claim 3 wherein the first-mentioned die has an opening leading from said cutting edge toward the second-mentioned die and through which the punched disk is pushed from the first-mentioned die to the paper.

Claim 6

Dependent Claim 315 words

The combination of a support frame, means on said frame for rotatably supporting a supply roll of tape having pressure sensitive adhesive on one side, means for feeding said tape including a feed roller to which said tape separably adhesively adheres and which is rotatably mounted in said frame, spaced apart guide elements for guiding the tape between said supply roll and said feed roller, an oscillatable drive shaft, means including a driving connection between said drive shaft and said feed roller providing for rotation of said feed roller in one direction to pull a predetermined length of said tape from said supply roll upon rotation of the shaft in one direction and for temporarily holding said feed roller against backward rotation during rotation of said shaft in the opposite direction to temporarily hold said length of tape stationary between said guide elements, means for punching said stationary length of tape and forming a disk therefrom including a die and a reciprocable plunger on said frame to receive said length of tape therebetween and having coactive cutting edges for punching a disk from said length of tape, means on said frame to guide said plunger and to bias said plunger in one direction into normal spaced relation to said die, and means including a cam on said drive shaft providing for actuation of said plunger in the opposite direction and the forcing of the cutting edge of the plunger into coacting with the cutting edge of said die with said length of tape therebetween a timed relation to the pulling of said tape from the supply roll and while said length of tape and said feed roller are held stationary to punch a disk from said tape, and for thereafter releasing said feed roller for pulling another length of tape from said feed roller when said drive shaft is again rotated in the first-mentioned direction.

Claim 7

Dependent Claim 315 words

The combination of a support frame, means on said frame for rotatably supporting a supply roll of tape having pressure sensitive adhesive on one side, means for feeding said tape including a feed roller to which said tape separably adhesively adheres and which is rotatably mounted in said frame, spaced apart guide elements for guiding the tape between said supply roll and said feed roller, an oscillatable drive shaft, means including a driving connection between said drive shaft and said feed roller providing for rotation of said feed roller in one direction to pull a predetermined length of said tape from said supply roll upon rotation of the shaft in one direction and for temporarily holding said feed roller against backward rotation during rotation of said shaft in the opposite direction to temporarily hold said length of tape stationary between said guide elements, means for punching said stationary length of tape and forming a disk therefrom including a die and a reciprocable plunger on said frame to receive said length of tape therebetween and having coactive cutting edges for punching a disk from said length of tape, means on said frame to guide said plunger and to bias said plunger in one direction into normal spaced relation to said die, and means including a cam on said drive shaft providing for actuation of said plunger in the opposite direction and the forcing of the cutting edge of the plunger into coacting with the cutting edge of said die with said length of tape therebetween a timed relation to the pulling of said tape from the supply roll and while said length of tape and said feed roller are held stationary to punch a disk from said tape, and for thereafter releasing said feed roller for pulling another length of tape from said feed roller when said drive shaft is again rotated in the first-mentioned direction.

Claim 8

Dependent Claim 133 words

The combination as defined in claim 5 with the addition of a coaxial reduced extension on the end of said plunger encircled by a shoulder on the plunger and having a cutting edge and a second die coaxial with and spaced From and beneath the first die to receive a piece of paper between the dies and having an opening with a cutting edge to coact with said cutting edge on said extension, said cam being formed to continue actuation of said plunger in the same direction after the punching of said disk to cause coaction of said extension of the plunger and said second die to punch alined holes in said disk and said piece of paper and adhesively press the resultant ring of tape onto the paper in one continuous operation.

Claim 9

Dependent Claim 109 words

The combination as set forth in claim 5 wherein said feed roller has a circumferential groove to be overlaid by said tape, and with the addition of a doctor blade having a main portion mounted on said frame at the delivery side of said feed roller and formed with an extension that terminates in a finger extending into said groove to lift the tape from the roller, the top surface of said extension having a central ridge and an inclined portion at each side of said ridge extending downwardly from said ridge into closely spaced relation to the surface of the roller to peel the tape from said roller.

Claim 10

Dependent Claim 69 words

The combination as defined in claim 6 wherein the first-mentioned die has an opening leading from said cutting edge toward the second-mentioned die and through which the punched disk is pushed from the first-mentioned die to the paper whereby the punched disk is controlled by the walls of said opening and the end of the plunger during the transfer of the disk from the first-mentioned die to the paper.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-08-11	1979-02-10	1979-08-12	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-08-11	1983-02-10	1983-08-12	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-08-11	1987-02-10	1987-08-12	$7700.00	Window Closed / Lapsed

Sheet perforator having means for reinforcing the sheet at the holes

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