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Class Information
Number: 19
Name: Textiles: fiber preparation >
Description: Means for mechanically isolating and for manipulating fibers so as to place them in condition for the purpose for which they are to be utilized. Includes the bringing together of the fibers into laps, slivers, and the like, but not twisting or interlacing into permanent form.

Class Number	Class Name	No. of Patents
19/144	Assembling	9
19/148	Article, screen-condensing	19
19/149	Article, winding	4
19/145	Different materials	9
19/145.5	Blending	110
19/145.7	By carding	33
19/145.3	Fiber to stick or rod	6
19/157	Formed silvers	72
19/159R	Coiling	136
19/159A	Can changing	115
19/160	Zigzag	5
19/161.1	Formed web	47
19/163	Zigzag	56
19/150	Silver forming	126
19/151	Fleece dividers	5
19/153	Rub aprons	2
19/152	Rub rolls	2
19/296	Web forming	138
19/300	Control means responsive to sensed condition or program	55
19/304	Fluid propelled to condenser	93
19/308	Rotary condenser	29
19/305	With fiber liberation	32
19/306	Gripping feed to fiber separator	26
19/307	Rotary condenser	6
19/299	Including continuous filaments	55
19/301	Irregular, nonuniform, or patterned receiving surface	23
19/302	Stratified or multilayer	40
19/303	With divided fiber stream or separate handling of trash or fugitive fiber	17
19/297	With fiber sampling	5
19/298	With split lap preventing	0
19/.27	Drying	15
19/1	Liberating	6
19/2	Animal fibers	10
19/4	Feathers	2
19/3	Silk	3
19/35	Boll hulling	5
19/38	With breaker	0
19/36	With knocker roll and breaker	0
19/37	With knocker roll	2
19/5R	Decorticating	5
19/19	Apron machines	2
19/20	Depulping	2
19/21	Combinations with reciprocating brakes	2
19/34	Depulping	4
19/10	Individual stalk opening	0
19/22	Reciprocating brakes	4
19/23	Continuous feed	8
19/24	Rotary machines	11
19/25	Axially movable rotor	13
19/33	Beaters	3
19/30	Brakes and beaters	3
19/31	Brakes	0
19/32	Reverse rotation	2
19/28	Depulping	2
19/29	Including brakes and combs	3
19/26	Single rotor	9
19/27	Depulping	7
19/5A	Systems	3
19/11	Traveling clamp feed	0
19/17	Depulping	1
19/18	Including rotary	1
19/12	Transverse	2
19/15	Depulping	1
19/16	Single rotor	0
19/13	Overhead	0
19/14	Depulping	0
19/9	With air blast	0
19/7	With liquid treatment	8
19/8	Depulping	3
19/6	With seed or leaf removing	6
19/39	Ginning	21
19/40	Delinting	21
19/41	Delinters	17
19/44	Rotor in shell	6
19/47	Skeleton rotor	0
19/45	Vertical	0
19/46	Skeleton rotor	3
19/42	Separate delinting and doffing chambers	0
19/43	Roller and bar	3
19/64.5	Feeding	34
19/48R	Gins	36
19/48A	Disc type	2
19/50	Roller and bar	9
19/51	Laterally movable detacher	1
19/53	Rotary detacher	5
19/52	Vibratory detacher	1
19/54	Rollers	0
19/49	Rolling squeeze	1
19/55R	Saw	18
19/58	Doffing and moting	8
19/60	Brushes	2
19/59	Pneumatic doffing	1
19/55B	Float roll	0
19/55A	Gin breast lift	1
19/57	Multiple cylinders	3
19/62R	Ribs	9
19/62A	Rotary rib	1
19/64	Saw cleaners	0
19/63	Saws	4
19/61	Seed boards	0
19/56	With boll hullers	2
19/.3	Stapilizing	7
19/.56	Combined	12
19/.58	Continuously flowing work	6
19/.6	Cutting	20
19/.62	Differential speed rotary cutter	3
19/.64	Fraying (e.g., abrasive)	1
19/.35	Tension breaking	19
19/.43	Differential effect	0
19/.39	Multi-stage	4
19/.41	With lateral filament deflection	1
19/.37	With weakening	4
19/.46	With prior treatment	14
19/.48	Aligning or separating	3
19/.51	With stapled fiber overlapping	2
19/.2	Stopping	22
19/.25	Break or run-out detection	43
19/.26	Strand winding	3
19/.21	Photo responsive	8
19/.23	Thickness detection	20
19/.24	Floating roll	2
19/.22	With signal	9
19/65R	Working	32
19/98	Carding	173
19/114	Card clothing	110
19/99	Card types	39
19/100	Roller worker and stripper	15
19/101	Multiple-roller worker unit	12
19/104	Stationary flat	42
19/102	Traveling flat	53
19/103	Bends	17
19/112	Cylinders	78
19/106R	Doffing	129
19/106A	Doffer comb	2
19/105	Feeding	294
19/113	Flats	65
19/108	Stripping	14
19/110	Flat	7
19/111	Traveling	34
19/109	Pneumatic	27
19/107	Waste recovering	113
19/115R	Combing	54
19/126	Apron and cylinder	0
19/127	Apron	4
19/122	Circle	2
19/124R	Dabbing mechanism	0
19/124B	Brush	0
19/123	Exterior and interior	1
19/128	Cylinder	7
19/115A	Draw-off rolls	4
19/125	Overhead traveling clamp	2
19/129R	Screw gill bar	22
19/129A	Gill bar cleaners	3
19/215	Tuft combing	25
19/229	Detaching (i.e., segment)	6
19/230	Belt	0
19/231	Roll	9
19/232	Oscillating or reciprocating	4
19/235	Nipper	16
19/220	Nonrotary combing	0
19/221	Stationary when combing	1
19/224	Adjusting	0
19/223	Moving to combed position in timed relation to nipper or detaching motion	8
19/233	Rotary comb cylinder	10
19/234	Half lap	10
19/216	Tuft translating type	1
19/217	Rotary	1
19/218	Waste clearing	7
19/219	With auxiliary pressing	1
19/225	With oscillating or reciprocating nipper	30
19/228	Adjusting	3
19/226	Plural pairs - alternating	3
19/227	Resilient closing or opening	3
19/115B	Waste collector	4
19/65CR	Crush rolls	10
19/236	Drafting	114
19/244	Apron type	63
19/248	Pressing or holding fibers against belt	9
19/250	Tensioning	5
19/251	By roll	1
19/256	With adjustments	5
19/252	With apron guide	9
19/254	Cradles	2
19/255	For plural aprons	7
19/253	Including specific cross-guide structure	6
19/249	With auxiliary apron support	9
19/245	With clearing	10
19/246	With condensing	44
19/247	With fiber orienting	2
19/237	Producing longitudinal variations	6
19/238	By variation of fiber input rate	5
19/258	Roll type	76
19/293	Gear or friction driving	25
19/260	Including changing roll speed or location	27
19/261	Roll-spacing adjusting	19
19/259	Including slip roll	2
19/266	Pressure-applying devices	20
19/278	Applied through saddle	0
19/279	Spring pressure applying means	1
19/280	With pressure-adjusting means	1
19/273	Applied through stirrup and saddle	1
19/274	Including fulcrumed lever linking stirrup and pressure means	1
19/275	Gravity pressure applying means	0
19/276	With means to vary or permit variation of pressure effect on fulcrumed lever arm	0
19/277	Spring pressure applying means	1
19/283	Gravity pressure applying means	0
19/272	Magnetic, hydraulic, or pneumatic	9
19/284	Saddle, per se	3
19/285	Lubricating or antifriction means	1
19/270	Signal	4
19/281	Spring pressure applying means	3
19/282	With means to adjust pressure	2
19/271	Uniform pressure applying to all rolls or plural pairs from a single source	4
19/267	With releasing means	11
19/269	Gravity pressure means	0
19/268	Responsive to roll relationship	1
19/287	Reciprocating transverse guide, condenser, or roll	2
19/286	Roll condensing	7
19/294	Roll stands	9
19/295	Top roll	14
19/262	With clearing	23
19/263	Pneumatic	25
19/265	Top roll	18
19/264	Underclearing	6
19/288	With fiber guide, condenser, or brake	72
19/292	Adjustable	4
19/289	Including marginal folding	1
19/291	Open type	5
19/290	Presser	0
19/257	With cooperating trough	1
19/243	With doubling	18
19/242	With fiber stretching	3
19/239	With material sensing	83
19/240	And speed changing	108
19/241	By belt shifting	0
19/66R	Fluid or special treatment	56
19/200	Cleaning	133
19/204	And feeding	38
19/205	Pneumatic	69
19/201	By detergent	3
19/202	Including condensing or saw action	26
19/203	And doffing	18
19/66CC	Cotton conditioning	59
19/66.1	Crimping or curling	10
19/66.2	Opposed intermeshing traveling surfaces	2
19/66T	Tow	14
19/80R	Picking	159
19/85	Beaters	11
19/86	Gripping feed	3
19/87	Multiple rotor	2
19/88	With condenser	0
19/89	With condenser	5
19/92	Intermittent feed	2
19/90	Longitudinal feed	4
19/91	Multiple rotor	1
19/93	Multiple rotor	5
19/94	Rotors	4
19/95	Screens	13
19/84	Bur removers, gripping feed	3
19/82	Disintegrators	9
19/83	Gripping	3
19/97.5	Feeding	51
19/96	Gripping feed	9
19/81	Nonrotary	66
19/97	Rotors	58
19/80A	Separator	4
19/65A	Systems	74
19/65T	Tow	21