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Class Information
Number: 271
Name: Sheet feeding or delivering >
Description: Means for moving an individual sheet from a stack of sheets or positioning the individual sheet with respect to a location where the sheet is operated upon or moving or positioning the individual sheet after having been operated upon.










Class Number Class Name No. of Patents
271/3.01

Delivering to stack and feeding therefrom

255
271/3.02

Aligning at stack

62
271/3.05

Feeding from bottom of stack

170
271/3.06

Control for feeding responsive to delivering

34
271/3.07

Pneumatic separating

44
271/3.08

Feeding from top of stack

87
271/3.09

Control for feeding responsive to delivering

20
271/3.11

Pneumatic separating

23
271/3.03

Intermediate tray

217
271/3.12

Sheets on edges

70
271/3.04

With job divider (e.g., resettable bail bar or double bar separator)

66
271/3.13

With sheet sensor for selective location

92
271/278

Delivering

63
271/193

By electrostatic or magnetic conveyor

108
271/198

By endless conveyor

250
271/199

Operation controlled by delivered sheet

51
271/204

Suspension gripper

343
271/205

For lateral margins of conveyed sheet

47
271/206

With means to adjust gripper

64
271/200

With delivery end movably relative to pack receiver

70
271/201

Moving away from increasing delivered pack

41
271/202

With means to vary speed of sheets on conveyor(s)

249
271/203

By cyclicly varying conveyor speed

45
271/194

By pneumatic conveyor

124
271/196

Unidirectionally-moving suction member or surface

191
271/197

Including endless-belt conveyor and suction chamber

255
271/195

Using pressurized gas

220
271/73

Curtains

4
271/67

Endless conveyors to curtains

1
271/69

Endless conveyors to other conveyors

135
271/70

To flies

9
271/279

Multiple discharge

129
271/302

By conveyor section movable to direct sheets along alternate paths

164
271/300

By release from conveyor at plural locations

86
271/280

For separating sheet from moving assemblage of sheets

55
271/281

By separating member moving in direction opposite of assemblage

21
271/282

By sheet attracting means

5
271/283

Pneumatic attracting means

22
271/284

Opposed pneumatic attracting means

15
271/285

With leading edges of sheets offset

25
271/286

With means to cause offset

30
271/287

Of successive sheets to plural receivers in succession

81
271/296

By diverter or conveyor moving past receivers

136
271/297

By individual diverter for each receiver

95
271/288

With control means to vary mode of operation

158
271/289

To bypass array of receivers

51
271/290

To route sheets to subsequent array of receivers

66
271/292

With movable receivers or receiver portions

117
271/294

Receivers moving into registry with delivery zone

173
271/295

Receivers arranged in rotary array

28
271/293

With means to increase spacing between receiver defining portions

147
271/291

With selective actuation of means for inverting duplex sheets

212
271/301

Selectively to recirculating path or exit

218
271/299

To laterally spaced receivers

61
271/298

With means to program discharge destination

225
271/303

With movable diverter

421
271/304

Bidirectionally rotating diverter roller

39
271/305

Individual diverter for each receiver

127
271/65

Optional face or back

203
271/66

Endless conveyors to flies

3
271/84

Reciprocating conveyors

71
271/85

Suspension gripper

72
271/72

Rotary conveyors to flies

1
271/314

Rotary conveyor

287
271/83

Flies

11
271/82

Suspension gripper

203
271/81

Traveling

22
271/315

With circumferential pocket members

246
271/207

To receiver for pack of sheets

451
271/212

For receiving sheets from below the pack

124
271/211

With air cushion between sheet and pack

64
271/209

With means to bow sheets

241
271/208

With means to discharge static electricity

45
271/210

With means to vibrate receiver

52
271/220

With movable pack-limiting member(s) (e.g., hold-down)

405
271/221

And means to move members cyclicly against sheet edges (e.g., jogger)

219
271/222

And yieldable connection in moving means

44
271/223

Members adjustable to sheet size

214
271/224

Sheet-impact bumper member

116
271/213

With movable sheet-surface support

416
271/214

Receding from delivery zone (e.g., retractor)

144
271/216

Conveyor-receiver for imbricated sheets

134
271/217

Lowering as pack-height increases

154
271/219

Spring-loaded support

63
271/218

With auxiliary support for part of pile

189
271/215

Responsive to increase

157
271/306

With transfer means between conveyor and receiver

89
271/189

Means temporarily interposed between conveyor and receiver

216
271/192

Counter-rotating supports for lateral margins

44
271/191

Endless belt on reciprocating carrier

24
271/190

Transversely-disposed, gapped sheet-supports on endless carrier

20
271/188

Means to bow sheets during delivery

346
271/184

Means to change orientation or direction of sheets during delivery

498
271/185

Orientation-changing means

232
271/187

By rotating circumferential-pocket members

210
271/186

Sheet inverting means

705
271/175

Means to drape sheets over horizontal bar

46
271/177

Means to push sheets out of edgewise into broadside movement (e.g., packer)

116
271/180

By reciprocating or oscillating packer

94
271/181

Packing sheets on-edge into receiver

118
271/178

Rotating packer

89
271/179

Screw or helix

40
271/182

Means to retard sheets

204
271/183

By suction retarder

148
271/307

Means to strip sheets from engagement with moving conveyor

103
271/309

By air blast

53
271/310

By means to attract sheet from conveyor

37
271/308

Stripper cyclically movable between stripping and nonstripping position

80
271/311

Stripper normally in contact with conveyor surface

82
271/312

Stripper normally in spaced relation to conveyor surface

56
271/313

With means to maintain constant spacing of movable stripper

21
271/176

Responsive to delivered sheet

267
271/3.14

Feeding and delivering

344
271/7

Continuous endless conveyors

64
271/3.18

Conveyor releases to subsequent conveyor

64
271/3.2

Including conveyor couple

72
271/3.24

Including gripper couple

21
271/3.23

Including pneumatic conveyor

15
271/3.21

On peripheral face of drum or belt

38
271/3.22

Pneumatic

16
271/3.19

With alternate conveying path

89
271/3.17

Sensor located at the delivering and controls the feeding

84
271/3.15

Sensor located at the feeder and controls the delivering

101
271/3.16

Having timer

23
271/4.01

Separator and conveyor

124
271/6

Continuous endless conveyor

72
271/4.05

Endless belt separator

11
271/4.06

To endless belt conveyor

12
271/4.07

To rotary conveyor

7
271/4.04

Mechanically linked for simultaneous operation

42
271/5

Pneumatic separator

97
271/4.11

Reciprocating separator

4
271/4.12

To rotary conveyor

5
271/4.08

Rotary separator

39
271/4.09

To endless belt conveyor

22
271/4.1

To rotary conveyor

117
271/4.03

Sensor located at the conveyor and controls the separator

59
271/4.02

Sensor located at the separator and controls the conveyor

37
271/8.1

Feeding

88
271/225

By means to change direction of sheet travel

576
271/264

By means to convey sheet (e.g., from pack to operation)

370
271/272

Between superposed conveyor couple

518
271/273

Having means to permit separation of couple

453
271/274

Including couple-elements resiliently urged together

411
271/271

By rear-edge pusher

90
271/267

On oscillating or reciprocating conveyor

109
271/268

Including gripper-couple

118
271/269

Including rear-edge pusher

36
271/275

On peripheral face of drum or belt

348
271/277

Including gripper-couple

442
271/276

Including pneumatic means

362
271/265.01

Responsive to sheet sensor

513
271/265.02

Plural sensors

282
271/265.03

Laterally spaced sensors

53
271/265.04

Thickness sensor

202
271/266

With intermittent movement of the sheet

111
271/270

With means to vary speed of conveyor sheet

526
271/9.01

Multiple supplies

288
271/9.1

Including continuous web supply

54
271/9.09

Including manual supply

193
271/9.12

Juxtaposed supplies

149
271/9.02

Sheet feeding from one supply controls feeding from another supply

120
271/9.04

Alternate feeding

30
271/9.03

Responsive to empty supply

62
271/9.07

Single separator acts on multiple supplies

79
271/9.08

Movably mounted supply

131
271/9.11

Superposed supplies

208
271/9.05

Supply selection (e.g., sheet color)

119
271/9.06

Size selection

90
271/9.13

With convergence to single path

244
271/145

Pack holders

478
271/147

Advancer

172
271/152

Control of advancer responsive to sensing of foremost sheet

152
271/156

Controlled pawl and ratchet actuates advancer

16
271/154

Sensor activates electric or fluidic circuit

67
271/155

Controlled electric or fluidic motor actuates advancer

124
271/153

Sensor included in feed mechanism

108
271/149

For on-edge or imbricated sheets

195
271/150

Supported by moving conveyor belt

156
271/151

For imbricated sheets

95
271/160

Urged by spring or weight

276
271/148

With means to move portions of advancer unequally (e.g., for unequal-thickness sheets)

58
271/157

With means to replenish pack or retract advancer platform

272
271/158

Using plural platforms during continuous operation of feeder

55
271/159

And plural drives for plural platforms

35
271/165

For feed from bottom of pack

139
271/166

With means to relieve weight of pack

64
271/171

Holder adjustable to size of sheet

608
271/162

Holder movable relative to feed position

484
271/163

Holder convertible from feed to delivery

75
271/164

Holder moved parallel to plane of sheets

303
271/161

With means to bow sheets

148
271/167

With means to restrain feed of next sheet

274
271/169

By lateral margin or side-edge restrainer

43
271/170

Corner snubber

97
271/168

By sheet-impaling restrainer

13
271/146

With means to vibrate pack

63
271/10.01

Separator and conveyor

185
271/16

Buckling separator and endless conveyor

14
271/17

Side aligner

4
271/10.06

Endless belt separator

52
271/10.07

To endless belt conveyor

35
271/10.08

To rotary conveyor

20
271/10.04

Mechanically linked for simultaneous operation

92
271/11

Pneumatic separator

312
271/12

Endless conveyor

165
271/13

Side aligner

21
271/14

Reciprocating conveyor

73
271/15

Side aligner

11
271/10.14

Reciprocating separator

18
271/10.15

To endless belt conveyor

6
271/10.16

To rotary conveyor

16
271/10.09

Rotary separator

129
271/10.1

To endless belt conveyor

44
271/10.11

To rotary conveyor

212
271/10.12

With aligning

76
271/10.13

With clutch

126
271/10.05

Selective drive (e.g., number of degree of rotation)

37
271/10.03

Sensor located at the conveyor and controls the separator

221
271/10.02

Sensor located at the separator and controls the conveyor

85
271/18

Separators

59
271/33

Adhesive

64
271/19

Buckling

48
271/24

Pack advancer

20
271/25

Feeler control

10
271/20

Pneumatic

54
271/21

Rotary

71
271/23

Bottom feed

24
271/22

Pack advancer

84
271/34

Endless belt

179
271/35

Bottom feed

225
271/18.1

Magnetic or electrostatic

67
271/18.2

Cyclicly moving

14
271/90

Pneumatic

134
271/108

Controlled by valve means

194
271/105

Means effecting preliminary operation on sheets in pack

142
271/106

Suction member flexing sheet or portion

207
271/107

Oscillating suction member

268
271/30.1

Pack advancer

73
271/31

Feeler control

52
271/31.1

Stack on edge

141
271/91

Plural, relatively-moving suction members

86
271/93

Including members for separating and members for forwarding sheet

72
271/92

Laterally receding members (e.g., for tautening sheet laterally)

9
271/97

Sheet removal by pressurized gas

192
271/98

And suction means

340
271/103

Sheet-moving action of suction member results from engagement with sheet

94
271/99

Suction member acting on bottom of pack

154
271/100

Oscillating member bending margin of bottom sheet

88
271/101

With moving segments supporting remainder of pack

47
271/102

Suction member reciprocating perpendicularly to sheet

58
271/94

Unidirectionally-moving suction member or surface

200
271/95

Having additional movement

113
271/96

With means to adjust suction

102
271/104

With means to restrain feed of next sheet

226
271/42

Reciprocating

56
271/131

Bottom feed

39
271/142

By adjustable (e.g., for sheet thickness) pusher

8
271/141

By pin (e.g., pointed) pusher

10
271/139

By pusher reciprocating variably or non-rectilinearly

21
271/140

Orbital (e.g., four-way) motion of pusher

9
271/143

By self-aligning (e.g., yieldable) pushers

6
271/144

Holder adjustable to size of sheet

25
271/132

Suction assisted

46
271/133

With means to prepare pack or bottom sheet for feeding

10
271/135

By partial planar movement of bottom sheet

12
271/134

By relief of pack weight

22
271/137

With means to restrain feed of next sheet

53
271/138

By adjustable exit or throat

42
271/136

With means to skip or stop feed

12
271/128

With pack advancer

34
271/130

And feeler control for advancer

13
271/129

With sheet on edge

27
271/109

Rotary

202
271/110

Control of separator responsive to sensing of sheet

298
271/111

Including plural separators or plural sensors

133
271/37

Preliminary protrusion

43
271/38

Feeler control

13
271/117

Separator adjustable or retractable relative to pack

461
271/118

Feed by successive approach and retraction

281
271/119

Separator having non-uniform periphery

217
271/120

Including relatively movable elements

64
271/113

Separator rotating in plane of foremost sheet

78
271/112

Suction assisted

79
271/114

Variably or intermittently driven

251
271/116

By over-running one-way drive

156
271/115

In oscillatory movement

36
271/121

With means to restrain feed of next sheet

718
271/124

By adjustable restrainer

324
271/125

Including restraining roller

232
271/123

By restrainer acting on rear end of sheet

22
271/122

By restrainer having rearwardly moving surface

354
271/126

With means to urge pack toward separator

281
271/127

Including pivoted pack holder

383
271/18.3

Surface-piercing element(s)

95
271/226

With means to align sheet

199
271/248

Against aligner adjacent side edge of sheet

132
271/250

By means to shift sheet laterally against aligner

229
271/252

By gripper-couple pulling sheet laterally

74
271/251

By oblique conveyor

242
271/249

By shifting aligner and gripper-couple laterally of sheet travel

39
271/232

Against aligner entering hole in sheet

13
271/245

Against front-edge aligner interposed into sheet path

328
271/246

Synchronized with intermittently-active conveyor-couple

115
271/247

Including sheet-margin gripper

10
271/243

Against front-edge aligner moved in direction of sheet travel

84
271/244

By retro-moving front-edge aligner

34
271/234

Against plural aligning assemblages

48
271/236

For front and side alignment of sheet

191
271/237

Alignment of imbricated sheets

38
271/238

Including oppositely-disposed side-edge aligners

66
271/235

For incremental travel against successive front-edge aligners

18
271/240

Oppositely-disposed side-edge aligners

166
271/239

Plural aligners selectively used

33
271/233

Against rear-edge aligner

87
271/242

Against temporarily-stopped conveyer

227
271/241

By aligning a sheet-holder and its sheets

98
271/227

Responsive to sheet-sensor

463
271/228

To control gripper-couple moving sheet to alignment

235
271/253

With means to adjust position of aligner

131
271/254

During operation of feeder

62
271/255

With indicator of aligner position

33
271/229

With means to retard sheet before alignment

55
271/230

By member moved with sheet

16
271/231

Including suction retarder

15
271/256

With means to interrupt feeding

110
271/257

Manually controlled (e.g., for alternate-cycle feed)

10
271/258.01

Responsive to sheet sensor

399
271/262

Excess-thickness sensor

181
271/263

To activate an electric circuit

282
271/258.02

Interrupts feeding upstream only

57
271/258.05

Mechanical linkage

22
271/259

Plural sensors

292
271/261

Laterally spaced sensors (e.g., to sense misalignment)

95
271/260

Pneumatic sensors (e.g., to sense superposed sheets)

27
271/258.04

Sensor operates warning indicator

62
271/258.03

Single sensor with timer

66
271/901

Magnetic operation

45
271/902

Reverse direction of sheet movement

450
271/1

Special articles

44
271/2

Envelope

232
271/900

Stripper

183
271/903

Traveling wicket (for stack on edge)

13
 
 
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