baber/WOPTO huggingface dataset:
Patent KR-200493874-Y1 (KR)
IPC: E04C2/40
Filed: 2019-09-04
Granted: 2021-06-18
Abstract: 본 고안은 거치물 또는 거치물을 수납할 수 있는 수납물을 고정할 수 있는 복수의 타공판을 사방에서 간이하게 조립하여 사용할 수 있는 조립식 벽 거치대에 관한 것으로, 본 고안의 단위 거치대는 거치물을 거치하기 위한 적어도 2 이상의 단위 거치대와 상기 단위 거치대 사이를 결합하기 위한 중간 결합 부재(7)를 포함하는 조립식 거치대로서, 상기 단위 거치대는 복수의 결합홀이 형성된 사각 평판 형상의 타공면(1); 상기 타공면(1)의 네 가장자리에서 배면으로 수직으로 절곡 형성된 4개의 결합면(2); 및 상기 각 결합면(2)에 형성되어 상기 중간 결합 부재(7)를 수용하기 위한 적어도 2개의 결합공(5)을 포함한다. 따라서 사용자는 복수의 단위 거치대를 매우 빠르고도 견고하게 조립할 수 있는 장점이 있다
Patent KR-200496758-Y1 (KR)
IPC: A01K97/00
Filed: 2020-09-21
Granted: 2023-04-17
Abstract: 본 고안은 수초를 제거하기 위해 막대를 당기는 방향에 대하여 칼날의 방향을 경사지게 배치하여 수초의 절단효율을 높일 수 있고, 또한 칼날의 노출부위를 최소화하여 부주의나 관리소홀로 인해 베이는 위험성을 최대한 낮출 수 있으며, 특히 고무튜브로 제작된 수상좌대에서 낚시를 할 때 수초 제거기의 사용으로 인해 수상좌대가 칼날에 찔려 펑크나는 일이 없도록 하는 낚시용 수초 제거기를 제공한다. 
본 고안은, 한쪽이 개방된 'V'자 형상의 제1 및 제2 내측면을 가지는 판부재로 이루어진 상,하부고정대와, 상,하부고정대 사이에 'V'자 형상으로 배치하되, 양쪽 날부를 마주보게 하여 제1 및 제2 내측면으로부터 돌출시키고, 개방부쪽에 장착구멍이 위치하도록 배치한 한 쌍의 커터날과, 커터날에 형성된 장착구멍을 관통하여 상기 상,하부고정대와 커터날을 개방부쪽 끝단에서 착탈 가능하게 고정하는 제1 고정나사와, 상,하부고정대에 결합되어 개방부 반대쪽 끝단에서 커터날을 가압 고정하는 제2 고정나사와, 상,하부고정대에 결합되어 커터날의 중간부분을 가압 고정함과 동시에 커터날이 뒤로 밀리지 않도록 칼등을 지지하는 제3 고정나사와, 하부고정대에 고정되어 긴 막대와 착탈 가능하게 하는 장착헤드를 포함하여 이루어진다.
Patent KR-200495917-Y1 (KR)
Title: 유지관리가 용이한 불꽃비산 방지커버
IPC: F16P1/06
Filed: 2021-02-10
Granted: 2022-10-25
Abstract: 본 고안은 유지관리가 용이한 불꽃비산 방지커버에 관한 것으로서, 커버체와 지지프레임이 착탈 가능한 분리형 구조를 이루도록 하여 커버체의 훼손 발생시 지지프레임과 분리 후 커버체만 교체할 수 있도록 하기 위한 것이다. 
이를 실현하기 위한 본 고안은, 일정 형상을 이루는 금속 재질의 지지프레임(10)과, 상기 지지프레임(10)에 결합되는 커버체(20)로 구성되는 불꽃 방지 커버에 있어서, 상기 커버체(20)에는 지지프레임(10)과 착탈이 가능하도록 하는 다수의 착탈덮개부(21)가 일체로 연결 구성된 것을 특징으로 한다.
Patent KR-200494137-Y1 (KR)
IPC: B65D90/04
Filed: 2021-02-18
Granted: 2021-08-09
Abstract: 본 고안은 가변형 벌크 컨테이너에 관한 것으로서, 보다 상세하게는 장방향 패널이 마주보며 배치되고, 장방향 패널의 양단에 단방향 패널이 결합되어 내부에 물품을 수용하도록 상부가 개방된 본체부와 본체부의 상부의 테두리가 구부러져 원형, 타원형 및 별모양 중 어느 하나의 단면을 갖도록 형성된 상부테두리부와 상부테두리부의 내측에 구비되고 내부가 빈 파이프형상으로 형성된 샤프트와 샤프트를 축으로 회전되게 결합하여 본체부의 높이를 연장시키는 연장부 및 연장부의 이웃하는 각 일단을 연결하여 견고하게 위치시키는 잠금부를 포함하는 가변형 벌크 컨테이너에 관한 것이다.
Patent PH-22016000507-Y1 (PH)
Title: Battery switch-over circuit
Inventor: CASTILLO RAMON I
IPC: H02J7/34
Filed: 2016-07-29
Abstract: This utility model discloses a switch-over circuit capable of switching over a supply from a 24 Vdc internal battery to a supply from a 24 Vdc external Battery, and vice versa, for supplying a device requiring a 24 Vdc input, being provided with a relay having its coil connected to the external battery. Whenever the external battery is connected to the circuit, the relay, having its normally close contact connected to the internal battery and the normally open contact connected to the external battery, will be energized and consequently effecting the connection of the external battery to the circuit as the normally open contact will close and likewise effecting the disconnection of the internal battery to the circuit as the. normally closed contact will open and thereby preventing the internal battery to become a load.
Patent PH-22017000900-Y1 (PH)
Title: Taro (Colocasia esculenta) Steamed Cake Flan
Inventor: BAGATSOLON ELENA M
Filed: 2017-11-16
Abstract: Taro (Colocasia esculenta) Steamed Cake Flan comprising the following ingredients: 69 parts dried ground taro, 15 parts caramelized sugar, 5 parts egg yolk, 10 parts fresh butter and 1 part baking.
Patent BR-202020025150-Y1 (BR)
Title: Formações para arar a camada superficial de terreno usando implemento modular agrícola de arrasto e respectivos componentes
Inventor: NURY JAFAR ABBOUD
IPC: A01B23/04
Filed: 2020-12-09
Abstract: FORMAÇÕES PARA ARAR A CAMADA SUPERFICIAL DE TERRENO USANDO IMPLEMENTO MODULAR AGRÍCOLA DE ARRASTO E RESPECTIVOS COMPONENTES. A presente patente de Modelo de Utilidade diz respeito a Formações Para Arar a Camada Superficial de Terreno Usando Implemento Modular Agrícola de Arrasto e Respectivos Componentes (1), foi desenvolvido para atender atividades agrícolas específicas em áreas de dimensões compatíveis é realizar o revolvimento da camada superficial do solo, nivelando e/ou incorporando corretivos e fertilizantes, bem como reduzindo a compactação para aumentar os espaços porosos e elevar a permeabilidade e o armazenamento de ar e água, o mesmo é caracterizado por ser montado em módulos sob formas de montagem diversas, destacando-se a Formação Agrícola Triangular em três versões, Triangulo Para Frente, Triangulo Para Trás e a Formação Agrícola Triângulo Grande, e a Formação Agrícola em Losango em duas versões, o Losango Simples, e o Losango Grande.
Patent JP-S6224254-Y2 (JP)
IPC: F21V8/00
Filed: 1979-09-17
Granted: 1987-06-20
Abstract: A light source device comprises a light source lamp detachably fitted to a light source lamp rest mounted on a housing; and a reflection mirror-retracting mechanism comprising a swing member on which a reflection mirror is carried, and which swings between a first position in which the swing member causes the reflection mirror to face one end of the light source lamp and a second position in which the swing member retracts the reflection mirror from one end of the light source lamp, and fixing member for locking the swing member in the first position. The arrangement allows for the fitting, removal or replacement of the light source lamp without releasing the reflection mirror from its place each time.
Patent IT-222748-Z2 (IT)
Title: Struttura di fermaglio per l'aggancio di oggetti ornamentali di oreficeria o bigiotteria a catenine, braccialetti o simili
IPC: A44B/
Filed: 1991-09-23
Granted: 1995-04-24
Abstract: Il presente trovato si riferisce ad una struttura di fermaglio per l'aggancio di oggetti ornamentali di oreficeria o bigiotteria a catenine, braccialetti o simili. Il fermaglio riproduce sostanzialmente la struttura di una molletta per panni del tipo costituito da due leve reciprocamente affacciate e collegate tra loro, in una zona intermedia del loro sviluppo, da una molla a spillo e con definito, tra le due leve, un passaggio per una catenina o simile. In corrispondenza della zona di pinzatura della molletta, il fermaglio presenta un aggetto che si sviluppa da una leva della molletta in direzione dell'altra leva e che è inseribile in un'asola definita in una porzione dell'oggetto da agganciare posizionabile in corrispondenza della zona di pinzatura.
Patent IT-222020-Z2 (IT)
Title: Struttura di rinforzo del calcio delle armi da fuoco
IPC: F41C/
Filed: 1991-11-11
Granted: 1994-12-29
Abstract: Struttura di rinforzo del calcio dei fucili costituita da un anello, dotato di un bordo affilato, e forzato nel piano frontale del calcio. Il bordo libero dell'anello risulta in battuta della carcassa a cui il calcio è collegato, inoltre il diametro dell'anello di rinforzo è sostanzialmente maggiore del foro di alloggiamento, ricavato nel calcio, per il tubo o tirante interno. In questo modo la zona del calcio all'interno dell'anello risulta compressa e quindi resistente alle sollecitazioni causate dal rinculo dell'arma.
Patent CH-497462-A (CH)
Title: 7-aminocephalosporanic acid derivs antibacterial
Inventor: BICKEL HANS DR
IPC: A61K31/545
Filed: 1968-01-02
Abstract: (A) 7-Aminocephalosporanic acid derivs. (I) R1 = opt. hydrogenated imidazolium or imidazolyl, bound with an N-atom to the acetylamino R2 = a free- or carboxylic acid-esterified hydroxy group in which the ester-O-atoms are opt. replaced by -S; opt. N-substd. carbamoyloxy in which the -O-atoms are opt. replaced by -Sf or a quaternary amino group. (B) Salts of (I) including internal salts. (I) have antibacterial activity against Gram-pos. and esp. Gram-neg. bacteria such as penicillin-resistant S. aureus, E. coli, K. pneumoniae, S. typhosa and B. proteus. They may be used in the treatment of infections caused by these micro-organisms or may be used as feedstuff-additives, as food preserving- or disinfecting agents.
Patent CH-503319-A (CH)
Title: Metering device for filtration additives - used in suspension
Inventor: KURT BREITFELD
IPC: G01N33/14
Filed: 1969-01-06
Abstract: This device functions according to the degree of turbidity in the media to be treated. It comprises a turbidity measuring device which is fitted in front of the filter and has a concave reflector, a lamp, a lens system, a measuring chamber and a photodiode or photoelectric cell. There is also an amplifier, a converter or pneumatic transducer, an adjusting or positioning device and a metering pump.
Patent CR-5867-A (CR)
Title: Mochila expandible para traje encapsulado de proteccion cotra quimicos
Inventor: DEBRA NELL WELCHEL
IPC: A41D13/02
Filed: 1998-09-29
Abstract: PRENDAS DE PROTECCION QUE INCLUYEN UNA PORCION DE MOCHILA EXPANDIBLE UBICADA EN EL AREA POSTERIOR DE LA PRENDA. LA PORCION DE MOCHILA INCLUYE POR LO MENOS UN PAR DE PLIGUES GENERALMENTE VERTICALES IZQUIERO Y DERECHO. COMO RESULTADO DE LA INCORPORACION DEL PAR DE PLIGUES GENERALMENTE VERTICALES IZQUIERO Y DERECHO, LA PORCION DE MOCHILA TIENE LA CAPACIDAD DE EXPANDERSE PARA RECIBIR EQUIPO DE MANTENIMIENTO DE VIDA U OTRO EQUIPO USADO EN LA ESPALDA DEL USUARIO DE LA PRENDA DE PROTECCION.
Patent CR-7581-A (CR)
Title: Proceso para el ahorro de energia y el ambiente
Inventor: CLARK VON RIESEN
IPC: F23C1/00
Filed: 2004-11-22
Abstract: El presente invento implica tres procesos electromagneticos que combinados aumentan y mejoran las caracteristicas del combustible, el aceite y el aire.
Patent CR-8095-A (CR)
Title: Anticuerpos humanizados que reconocen el cuerpo beta amiloideo
Inventor: BASI GURIQ
IPC: C07K17/00
Filed: 2005-11-16
Abstract: La invencion se relaciona con agentes mejorados y metodos para el tratamiento de enfermedades asociadas con depositos de amiloide de AB en el cerebro del paciente. Los agentes preferentes incluyen anticuerpos, por ejemplo anticuerpos humanizados.
Patent CR-8632-A (CR)
Inventor: BRACHT STEFAN
IPC: A61K47/38
Filed: 2006-09-14
Abstract: The invention relates to a pharmaceutical preparation containing drospirenone for application to the skin. The amount of drospirenone contained in said preparation in an initial state does not exceed saturation solubility. However, one the preparation is applied to the skin, the saturation solubility of drospirenone is exceeded. The pharmaceutical preparation enables inter alia transdermal application of contraceptively effective amounts of drospirenone.
Patent CR-9665-A (CR)
Title: Proceso para la preparacion de compuestos de 1-[ciano (4-hidroxifenil) metil] ciclohexanol
Inventor: MITZEL FRIEDER
IPC: C07C253/30
Filed: 2008-01-16
Abstract: Procedimiento para la preparacion de compuestos de 1-[ciano(fenil)metil]ciclohexanol de la formula general (I): en donde R1 es hidrogeno, alquilo (C1-4) o alcoxi (C1-4), caracterizado porque se hace reaccionar un compuesto de la formula general (II): en donde R1 tiene los significados indicados con anterioridad, con coclohexanona, en donde la reaccion se lleva a cabo en presencia de una base organica o inorganica y esta base organica o inorganica esta presente en al menos una cantidad equimolar respecto de la cantidad de compuesto de la formula general (II) en la mezcla de reaccion.
Patent CR-9703-A (CR)
Title: Derivados de pirazolona
Inventor: AMREIN KURT
IPC: C07D471/04
Filed: 2008-01-29
Abstract: Los compuestos de la formula (I) aso como las sales y los esteres farmaceuticamente aceptables de los mismos, en la que R1 a R4 tienen los significados definidos en la reivindicacion 1, pueden utilizarse en forma de composiciones farmaceuticas.
Patent CR-9789-A (CR)
Title: UNA TECNOLOGiA DE APLICACION DINAMICA EXTENDIDA
Inventor: XUE SONG SU
IPC: F27D11/10
Filed: 2008-03-03
Abstract: Una tecnica para la aplicacion de extension de la tecnologia dinamica incluye la modificacion de la tecnica estatica en una tecnologia dinamica correspondiente, y se refiere a un metodo para mejorar dinamicamente la calidad del material, la construccion y los parametros de un equipo tecnologico. La calidad del material, contsruccion, parametros, y trabajo pertinente y proceso de fabricacion del eslabon debil de la tecnica son modificados por la aplicacion de una combinacion selectiva de la presente tecnologia dinamica, para mejorar calidad, funcionalidad, rendimiento, precision, pureza, alta temperatura, alta precision, alta densidad de flujo de energia, etc. La tipica aplicacion de dicha combinacion selectiva incluye electrodos dinamicos, pistola dinamica de pulverizacion, horno industrial dinamico, produccion de material dinamico, bateria de alta energia dinamica, fuente fuerte de luz electrica dinamica, laser dinamico y reactores nucleares dinamicos.
Patent CR-9843-A (CR)
Title: Empaque integral con indicacion de cierre
Inventor: CAROL ANNE COLE
IPC: B32B33/00
Filed: 2008-03-28
Abstract: Un cierre resellable para un envase en el cual se indica la integirad del empaque por medio de un sistema el cual se rompe y/o produce un sonido audible cuando el cierre resellable se abre por primera vez. La nueva ventaja de integridad del empaque, incluye en una aplicacion al menos una banda en principio sujeta a dos porciones que comprenden el cierre resellable de forma que al abrir el cierre resellable por primera vez, al menos una de las bandas se rompe, produciendo asi el sonido audible.
Patent DK-4886-A (DK)
Inventor: ICKING FRIEDRICH
IPC: A01J5/12
Filed: 1986-01-06
Abstract: A pulsator for milking machines has two diaphragms connected by a rod with each diaphragm dividing a pressure chamber into a processing space and a damping space. The damping spaces communicate through a channel that is provided with a throttle. The processing spaces are connected either to a source of vacuum or to the atmosphere. A switchover is attached to the rod and connects lines leading to the pulsation spaces of milking containers either to the atmosphere or to a source of vacuum. A main line is provided with a throttle. The throttles in the communicating channel and in the main line are detoured by bypasses provided with chokes that can be vacuum-activated through control channels. To improve the known pulsator by eliminating the sensitive hoses and timers and to allow adjustment of the duration of the stimulation phase with no need for a timer, the control channels are always in communication with one of the control chambers in a control disk, one chamber constantly communicating with the vacuum source and the other chambers subject to atmospheric pressure. The disk can be rotated by a transmission, which is driven by the rod as it travels back and forth, in such a way that the control channels are connected either to the control chamber that is subject to vacuum or to one of the control chambers that are subject to atmospheric pressure.
Patent DK-7382-A (DK)
Inventor: STUMPP K H P
IPC: F04F5/18
Filed: 1982-01-11
Abstract: The invention relates to an inflating device containing a pressurized gas chamber arranged in a housing. To achieve small dimensions and a cheap structure, never-the-less maintaining a large capacity for the device, the pressure chamber constitutes a standard type of gas bulb (2), a discharge duct (7) in communication with the chamber being formed to provide ejector action for inducting air via secondary air passages (11) leading from the duct (7) to the outside of the housing and suitably provided with non-return valves.
Patent IS-7892-A (IS)
Inventor: CRESCENZI BENEDETTA
IPC: C07D221/00
Filed: 2005-06-13
Abstract: Tetrahydro-4H-pyrido[1,2-a]pyrimidines and related compounds of Formula A: are described as inhibitors of HIV integrase and inhibitors of HIV replication, wherein n is an integer equal to zero, 1, 2 or 3, and R1, R3, R4, R12, R14, R16, R30, R32, R34 and R36 are defined herein. These compounds are useful in the prevention and treatment of infection by HIV and in the prevention, delay in the onset, and treatment of AIDS. The compounds are employed against HIV infection and AIDS as compounds per se or in the form of pharmaceutically acceptable salts. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines.
Patent YU-3700-A (YU)
Title: Pharmaceutical compositions containing vitamin d and calcium, their preparations and use
Inventor: MAURIZIO VALLERI
IPC: A61P3/14
Filed: 1998-07-21
Abstract: Described herein is a pharmaceutical composition containing vitamin D and calcium, comprising a binding agent chosen from among the group consisting of: propylene glycol, a polyethylene glycol presenting a molecular weight comprised between 300 and 1500, liquid paraffin or silicone oil, useful for the treatment of nutritional deficiency of calcium and vitamin D in the elderly.
Patent CR-11176-A (CR)
Title: Formulaciones liquidas solubles de sales amonicas de quinclorac
Inventor: BERGHAUS RAINER
IPC: C09K23/18
Filed: 2009-12-17
Abstract: La presente invencion se refiere a novedosas formulaciones liquidas solubles (SL) que comprenden A) sales amonicas de quinclorac de la formula I en la que R1, R2, R3, R4 significan independientemente hidrogeno o, opcionalmente, alquilo sustituido.
Patent DK-37983-A (DK)
Inventor: SNIDER SCOTT C
IPC: C08G18/79
Filed: 1983-01-31
Abstract: Cellular foams, particularly polyisocyanurate foams, are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol mixture prepared by the transesterification with a glycol of a by-product fraction from the manufacture of dimethyl terephthalate, the major portion of said fraction comprising about 15 to 70 weight percent of dimethyl terephthalate, and about 85 to 30 weight percent of a mixture of monomethyl terephthalate, bi-ring esters and polymeric materials. Laminates of such foams exhibit a high degree of fire resistance, low smoke evolution on combustion, low foam friability and high compressive strength.
Patent DK-46195-A (DK)
Inventor: MORTENSEN THORVALD
IPC: B60B30/00
Filed: 1995-04-21
Abstract: The wheel lifter comprises a rectangular base frame A, welded on to 2 carrier pieces B, fitted with 4 rotatable wheels C. A lifting arm D, which raises and lowers the wheel with the aid of the carrier shaft F is mounted on the base frame A. The carrier shaft F can be rotated by means of the crank handle H, so that the wheel will reach the desired position for the fixing points. The gear between the carrier shaft and the wheel rim allows the wheel to be easily rotated. The lifting arm D and the carrier shaft F are raised and lowered by means of the crank handle J, the wire K and the wheels L. The lifting arm D is fitted in the frame A at a rotatable point. The lifting arm D is also longitudinally displaceable, so that the wheel lifter can be adapted to wheels with different diameters. <IMAGE>
Patent FR-1454331-A (FR)
IPC: H03J5/12
Filed: 1965-11-19
Granted: 1966-07-22
Abstract: 1,088,199. Push-button tuning mechanisms. R. HOPT. Nov. 17, 1965 [Nov. 21, 1964], No. 48830/65. Heading H3Q. A push-button device for actuating tuner units of radio apparatus, particularly television receivers, comprises one or more push buttons 2 each of which operate simultaneously more than one tuning unit (e.g. UHF and VHF), and a switch for operatively connecting one of these tuner units into the circuits of the apparatus, the or each push button 2 having a cylindrical part (14, Figs. 2, 3, not shown) and a cap 13 rotatable but non-displaceable thereon and having a projection (pin 11) extending therefrom and so positioned that, on depressing the push button, the projection 11 either displaces or moves idly past a switching member (flap 4 pivoted about 6) to operate (by movement of arm 7) the said switch, depending on the angular position of the cap relative to the cylindrical portion. The cap is urged into either of two end positions in which a radial projection 19 on the cylindrical part abuts one of a plurality of longitudinal fingers (16) of the cap, by a spring 21 acting between pins 22, 23 on the cylindrical part and the cap, respectively. The fingers (16) terminate in claws (15) which engage behind a shoulder of the cylindrical part (14) to hold the cap 13 thereon. The cap may be of resilient synthetic resin material.
Patent GB-819120-A (GB)
Title: Phase saturable transducer
IPC: G10K11/28
Filed: 1958-01-01
Abstract: 819,120. Aerials; radio direction finding. BENDIX AVIATION CORPORATION. Jan. 1, 1958 [Jan. 22, 1957], No. 104/58. Class 40(7). Relates to aerial structures by which the direction of a received wave may be determined by measuring the phase difference between signals produced in two waveguides. Waveguides 10, 11, Figs. 1, 2, are mounted with a common wall and with their mouths in a common plane 13. The ends of the guides are shorted by walls 10d, 11d, and there are mounted in the guides two probes 10e, 11e. Incoming waves excite signals in the probes having a phase difference dependent on the angle of incidence # of the waves. Ambiguous indications when the signal phase difference exceeds 90 degrees are prevented, while not reducing the sensitivity of the aerial, by means of a shield or horn 14. There is a linear relationship between the angle # and the phase difference of the signals in the probes up to about 85 degrees phase difference after which phase saturation occurs, Fig. 3 (not shown). The aerial structure may be mounted in a radome, the non-conducting walls of which may be partly covered by a shield to supplement or replace the shield 14 and which may be lined with radiation-absorbent material, Fig. 4 (not shown).
Patent GB-589969-A (GB)
Title: Improvements relating to the driving and gearing of carding engines
IPC: D01G15/36
Filed: 1945-01-03
Abstract: 589,969. Carding engines. SMALLEY, E. G., and TWEEDALES & SMALLEY (1920), Ltd. Jan. 3, 1945, No. 202. [Classes 120 (i) and 120 (ii)] In a flat carding engine, the driving mechanism is confined to one side of the machine and comprises a main motor 1 driving to a gear box 2 from which the various parts of the machine are driven at selected speeds by positive drives, the doffer comb 54 being driven by a separate motor 52 synchronised with the main driving motor. From a countershaft 9 in the gearbox, feed roller 12 is driven via shaft 16, licker-in roller 13 via shaft 17, doffer 14 and flats 33 via shaft 18, and coiler delivery box 15 via shaft 19, through suitable gearing. Control handles 51, 55 and clutch 41 can respectively disconnect the drives to the delivery box, the flats, and the licker-in roller. Stop mechanism for the feed roller, operated by excessive lap thickness or manually by lever 48, is as described in Specification 589,878. Handle 32 operates differential gear unit 30 controlled by a sliding gear 31 to give fast, slow or neutral drive to the doffer 14, the fast speed being for normal working and the slow speed for grinding the card teeth. Provision is made in the gearbox by change wheels or otherwise for changing the gear ratio of the various drives. The gearbox door on opening operates a limit switch so as to stop the main motor, which cannot be re-started until the door is closed. In the Provisional Specification the door is described as being able to be opened only when the machine is stopped, and as being locked immediately the machine is started.