baber/WOPTO huggingface dataset:
Patent DE-4418845-C1 (DE)
Title: Method and appts. for laser beam treatment of materials
Inventor: RICHERZHAGEN BERNOLD
IPC: B23K26/064
Filed: 1994-05-30
Granted: 1995-09-28
Abstract: The proposed device for machining material has a laser and a machining module for forming a fluid jet (12) and for injecting the laser beam focused by means of a focusing unit into the fluid jet (12). The type of fluid chosen has a sufficiently low radiation absorption coefficient. The flow rate of the fluid in the path as far as the laser-beam injection point, which is situated preferably in the region of the focusing cone apex, is set sufficiently high to ensure that no thermal lens can form in the fluid region between the focusing optics and the focus, since a thermal lens would divert portions of the beam to the nozzle wall and damage it. The rate of removal of the machined material can be substantially increased if an electrically insulating nozzle and fluid is used and the flow rate set at a sufficiently high level to allow the fluid jet to become electrically charged.
Patent NL-1002050-C1 (NL)
Title: Electrode system for stimulating lung function in patient in coma
Inventor: DEKENS JAN LOURENS
IPC: A61M25/06
Filed: 1996-01-10
Granted: 1996-02-23
Abstract: The proximal end of the flexible tube (2) has a conical air intake with outer connections for the stimulation pulse. Insulated conductors (7, 8) run along the inside of the tube to two conductive rings (4, 5). The rings are set into grooves (6) on the outer wall of the tube near its distal end (3). Air can flow to and from the lung via holes in the end (12) of the tube and holes (25) at intervals in its wall. If the patient's breathing ceases, stimulation pulses are automatically delivered to the ring electrodes.
Patent NL-1012081-C1 (NL)
Title: Machine for heat sealing two sheets of plastic foil operates underwater
Inventor: KAMPHUIS GERHARDUS FRANCISCUS
IPC: B29C65/00
Filed: 1999-05-17
Granted: 2000-11-20
Abstract: The machine applies an electrically heated conductor (F) to raise the temperature of plastic foil sheets to about 100 deg. C. The heating conductor (F) is produced on the surface of an insulated and flexible substrate (D). The sheets (Z) are placed on the flat stationary support plate (K) and a mechanism (L, M, N O) applies hydraulic or mechanical pressure to the frame (B), pressing the heating conductor (F) onto the foil sheets (Z)
Patent NL-1014948-C1 (NL)
Title: Hanger device fitted sideways onto wire used to hang displayed objects from, comprises slotted cylinder and rotatable disc with hook, wire clamp and locking parts
Inventor: BOXTEL JOHANNES FRANCISCUS MAR
IPC: A47G1/16
Filed: 2000-04-13
Granted: 2001-10-16
Abstract: The device (1) comprises an essentially cylindrical casing (6) with a length direction slot forming a side entrance for the wire (2). A rectangular cavity intersecting with the casing length axis and extending at right angles to the slot is used to receive a disc (4) rotatable about axle (5) extending perpendicular to the disc. One end of the disc is formed as a hanger hook (3) and is located outside the casing, whilst the other end inside the casing is provided with wire clamp and locking means.
Patent NL-1026355-C1 (NL)
Title: Transport trolley is for carrying knock-down furniture and has base surface provided with three sets of non-pivotable wheels
Inventor: BEENTJES JOHANNES HENDRIKUS MA
IPC: B66B9/00
Filed: 2004-06-08
Granted: 2005-12-09
Abstract: The transport trolley is for carrying knock-down furniture and has a base surface (21) with three sets of non-pivotable wheels (24,25). The central set of wheels (24) extends further downwards than the outward sets of wheels (25). The base surface has a load surface (22) extending between the wheels. The trolley has an upper structure (21,23,26,27). The base surface has upstanding sides on which the upper structure is fitted. The load surface extends outwards beneath the axles of the wheels. The clearance between the under edge of the load surface and the floor upper surface is preferably between 3.5 centimeters and 5 centimeters. The trolley has the following dimensions: Width - preferably between 50 and 70 centimeters Length - preferably between 110 and 120 centimeters Height - preferably between 185 and 205 centimeters.
Patent NL-1027973-C1 (NL)
Title: Tap for cutting bolt holes, designed for securing in head of hand drill for machine tapping
Inventor: MULDER JEROEN HERMAN HUBERTUS
IPC: B23G5/06
Filed: 2005-01-07
Granted: 2006-07-10
Abstract: The tap is specially designed for use in combination with an optionally battery-powered hand drill to allow machine tapping. The tap is releasably secured in the drill head.
Patent RU-2060462-C1 (RU)
Title: Sensitive element of rotor vibratory gyro
Inventor: BELUGIN VALERIJ B
IPC: G01C19/00
Filed: 1987-07-31
Granted: 1996-05-20
Abstract: FIELD: gyro engineering. SUBSTANCE: sensitivi element has rotor, ring and two pairs of inversely orthogonal tension members. Side surfaces of the tension members have protrusions common for each adjacent tension members. Edge surfaces of protrusions are formed by four cylindrical surfaces. Axes of surfaces are parallel to axes of side surfaces pf tension members. Side surfaces of all protrusions are disposes at two planes orthogonal to axis of rotation of rotor. EFFECT: improved overload capability of sensitive element. 2 dwg
Patent RU-2007404-C1 (RU)
Title: Способ получения производных оксадиазолалкилпурина или их фармацевтически приемлемых кислотно-аддитивных солей (его варианты)
Inventor: DEZHE KARBONITSH
IPC: C07D473/06
Filed: 1987-10-09
Granted: 1994-02-15
Abstract: Использование: в медицине, в частности в качестве успокаивающего кашель средства. Сущность изобретения: продукт - производное оксадиазола ф-лы 1, где А - C 1 -C 4 -алкилен, R 1  - C 1 -C 4 -алкил, окси- или, хлор-, или карбокси-(низший)алкил, циклогексил, фенил, оксифенил, карбоксифенил, бензил, диметоксибензил, аминоалкил ф-лы (CH 2 ) n NR 2 R 3 , где n = 1 - 3, R 2  и R 3  - C 1 -C 4 -алкил или вместе с азотом - пиперидиновое или морфолиновое кольцо, или их фармацевтически приемлемые кислотно-аддитивные соли. Сущность изобретения: 1-й вариант, реагент 1: оксим ф-лы 2. Реагент 2: низший алкиловый эфир R'-карбоновой кислоты ф-лы 3. Условия реакции: нагревание в среде органического растворителя в присутствии этилата натрия или гидроокиси щелочного металла. 2-й вариант. Реагент 1: оксим ф-лы 2. Реагент 2: галоидангидрид или ангидрид R'-карбоновой кислоты ф-лы 3. Условия реакции: при взаимодействии реагентов получают промежуточное соединение ф-лы 4, выделяют его и/или дегидратируют (циклизуют) при нагревании.     R′COOH     (3)  .
Patent RU-2008070-C1 (RU)
Title: Exhaust drying gas cleaning plant used at drying of wood shavings, wood fibre
Inventor: VERNER BARTLING
IPC: B01D46/04
Filed: 1988-05-10
Granted: 1994-02-28
Abstract: FIELD: cleaning of drying gases. SUBSTANCE: part of drying gases is filtered out at a temperature above the dew point, and part of filtered out particles together with scavenging air having a temperature above the dew point is continuously supplied to the combustion chamber intended to obtain hot gas, and burnt off. To this end, the plant is provided with an additional transmission pipeline connected to the combustion chamber and tap for removal of filter unit filtered out particles, which is provided with a gasket. EFFECT: facilitated procedure. 3 cl, 1 dwg
Patent RU-2012570-C1 (RU)
Title: Резиновая смесь на основе изопренового каучука
Inventor: SIZOVA NATALIYA M
IPC: C08K5/44
Filed: 1988-12-28
Granted: 1994-05-15
Abstract: Использование: резиновая промышленность, производство резино-технических изделий и шин. Сущность изобретения: предварительно получают модификатор - блокированный изоцианат, содержащий олигодиен, блокированный белой сажей или каолином в среде стеарина или четыреххлористого углерода при соотношении по массе 10 - 15 : 8 - 13 : 10. Резиновая смесь содержит следующие компоненты (в мас. ч. ), : 100 изопренового каучука, 1,0 - 1,9 серы, 0,1 - 0,3 тетраметилтиурамдисульфида, 1,1 - 2,0 сульфенамидного ускорителя, 0,3 - 0,7 N-дитиодиморфолина, 1,2 - 3,5 полимера 2,2,4-триметил-1,2-дигидрохинолина, 0,2 - 0,4 N-изопропил-N'-фенил-h-фенилендиамина, 10 - 40 техуглерода ПМ-40Н, 10 - 40 техуглерода ДГ-100, 5 - 20 указанного олигодиена. Характеристика резины: условная прочность при растяжении 26,9 - 28,0 МПа, сопротивление раздиру 132 - 140 кН/м, относит. удлинение - 490 - 630% , усталостная выносливость при многократном растяжении при ε=150% 59 - 115, тыс. ед. , прочность крепления к стали 44 - 68 МПа, коэффициент старения по прочности 0,76 - 0,93. 2 табл.
Patent RU-2034715-C1 (RU)
Inventor: MIRONOV ALEKSANDR P
IPC: B60K5/12
Filed: 1989-06-12
Granted: 1995-05-10
Abstract: Использование: изобретение относится к транспортному машиностроению, а именно к пассажирским автомобилям, в частности к конструкции передка автомобиля. Сущность изобретения: концевая часть транспортного средства содержит раму, состоящую из П-образного элемента, выполненного из трубы круглого профиля, и кронштейнов, с которыми жестко соединены концы этого П-образного элемента и через резинометаллические шарниры стойки подвески с упругими элементами подвески управляемых колес. 8 ил.
Patent RU-2032082-C1 (RU)
Title: Modular solar-electric plant
Inventor: VOLKOV EDUARD P
IPC: F24S23/74
Filed: 1990-02-23
Granted: 1995-03-27
Abstract: FIELD: solar power engineering. SUBSTANCE: saturated steam produced in solar receiver 4 of steam generator having economizer heating surface 1 and evaporator heating surface 2 is conveyed to steam-liquid separator 5 wherefrom dry saturated steam is supplied either directly or via fuel-fed steam reheat transfer surface 6 to turbine 8. Saturated liquid produced in separator 5 is stored in tank 7 and can be used to produce steam for plant operation in absence of solar insolation or for any other purpose. Plant may be used to supply heat energy to users through water-to-water heat exchanger 16 communicating with tank 7 and through gas-to-water heat exchanger 17 ytilizing heat of exit gases from steam reheater 6. Electrical energy generated by photoelectric converters 18 is used to supply auxiliaries of power plant which ensures its off-line operation. Heater 21 that functions as cooling system of photoelectric converters 18 may be used insteadof heater 11 to raise power output. EFFECT: improved stability of heat and power supply, simplified design. 1 dwg
Patent RU-2009070-C1 (RU)
Title: Suspended boat motor
Inventor: MOROTSKIJ OR A
IPC: B63H20/00
Filed: 1990-05-11
Granted: 1994-03-15
Abstract: FIELD: engines. SUBSTANCE: motor head shroud 1 has union 3 to which air-intake branch pipe 5 is fastened by coupling nut 4. The union thread is made so as to unscrew the nut from the union when the air-intake branch meets and obstacle. EFFECT: improved structure. 3 dwg
Patent RU-2026498-C1 (RU)
Title: Rotary internal combustion engine
Inventor: DANILISHIN GRIGORIJ MIKHAJLOVI
IPC: F02B53/00
Filed: 1990-07-12
Granted: 1995-01-09
Abstract: FIELD: engine engineering. SUBSTANCE: rotary internal combustion engine has case with ring working chamber, conical planet gear mechanism, differential with a shaft, and rotors made up of two disks with pistons mounted for nonuniform rotation in one direction and coupled with each other and shaft of the differential. The mechanism has bearing gear wheels mounted coaxially in the case. The gear mechanism is provided with a flexible damping mechanism whose one part is rigidly secured to the case and the other one to corresponding bearing gear wheel of the case. The gear mechanism is coupled with the differential. Each bearing gear wheel is made up of an assemble of alternate conical gear sectors. The sectors are axially alined and positioned coaxially with respect to the conical gear wheels of the differential. Each gear wheel is kinematically coupled with planetary pinions of the differential. The planetary pinions are spring-loaded with torsion springs on a carrier. EFFECT: enhanced efficiency. 7 dwg
Patent RU-2000133-C1 (RU)
Inventor: ZOLOTOV PAVEL A
IPC: A63B63/00
Filed: 1990-11-12
Granted: 1993-09-07
Abstract: Сущность изобретени : устройство содержит  мишень, NH чувствительных элементов  7 и 19, пульт управлени  24. блок  обработки информации 5, индикаторы 22 и  23, 7-5-22: 19-5-23: 24-5. 3 з.п.ф-лы. 6 ил.
Patent RU-2001706-C1 (RU)
Inventor: EGOROV VLADIMIR P
IPC: B07B4/08
Filed: 1990-12-06
Granted: 1993-10-30
Abstract: Использование: в области сельского хоз йства  дл  механизации процесса очистки зерновых материалов  Сущность: устройство включает приемное  приспособление 1. решетный стан 2, аслирационный  канал 11, пневмосепарирующий канал 5 и осадочную  камеру 6. Решетный стан 2 имеет сортировочное  13. подсевное 14 и контрольное 15 решета  Решетный стан 2 совершает круговые колебани .  Вывод фракций отходов осуществл етс  через вывод щие  лотки 17, 18, 19. 20 Пневмосепарирующий  канал 5 разделен перегородкой 23 на предварительную  24 и сортировочную 25 части. Начало  контрольного решета 15 соединено патрубком 34 с  выходом осадочной камеры 6. Разгрузочный конец  решета 15 расположен над серединой решета 15.  1 ил.
Patent RU-2018655-C1 (RU)
Title: Circuit air hammer for hole drilling
Inventor: SMOLYANITSKIJ BORIS N
IPC: E21B4/14
Filed: 1991-02-06
Granted: 1994-08-30
Abstract: FIELD: equipment for geological exploration, mining and construction. SUBSTANCE: air hammer has body consisting of cylinder 1 and sleeve 2, stepped air hammer 3, air distribution pipe 4, core-cuttings receiver 5, nut 6, rock cutting tool 7, upper bushing 10, lower bushing 8 and distributing bushing 9, and locking ring 13. Compressed air is supplied to air inlet duct 14 of air hammer through annular gap between barrels 11 and 12 of double core barrel string. Rated amount of compressed air is fed to inner barrel 11 of double core barrel string to create zone of low pressure. Main part of compressed air performs starting of air hammer through channel 16. Rock cutting are entrained by flow of exhaust air and due to locking ring 13 and rush into zone of low pressure. When passing channel 15, cuttings mixture is imparted additional speed momentum due to energy of air jet and directed to surface through inner barrel of double core barrel string. When air hammer is withdrawn from hole bottom, air from air line acts on hole bottom thus additionally cleaning it of cuttings. EFFECT: higher efficiency. 2 cl, 1 dwg
Patent RU-2007852-C1 (RU)
Inventor: BERSENEV ANDREJ A
IPC: H03H17/00
Filed: 1991-02-22
Granted: 1994-02-15
Abstract: FIELD: radio engineering. SUBSTANCE: device has surge injector 1, counters 2, 3, flip-flops 4, 5, 6, AND gates 7, 12, 13, 14, OR gates 15, 16, 17, input of detector 18, decoders 8, 9, 10, 11, device outputs 19, 20. EFFECT: simplified design. dwg
Patent RU-2030224-C1 (RU)
Title: Washing machine
Inventor: YURCHENKO ALEKSANDR I
IPC: B08B9/08
Filed: 1991-04-03
Granted: 1995-03-10
Abstract: FIELD: cleaning internal sides of tanks. SUBSTANCE: machine has the fixed housing secured to a pipe line for supplying fluid. The housing is connected to the movable housing through a gear transmission. The movable housing has radial curved tubes with nozzles. The curved adapting branch pipe is secured inside the housings for permitting rotation. The ends of the branch pipe and the housings are axially alined. The movable housing is provided with branch pipes for setting the tubes with nozzles for permitting rotation with respect to the vertical axis, locator of nozzle position, and additional branch pipes with plugs for connecting the additional tubes with nozzles. EFFECT: improved design. 3 cl, 3 dwg
Patent RU-2024910-C1 (RU)
Inventor: KUTUKOV EDUARD E
IPC: G05D16/06
Filed: 1991-05-12
Granted: 1994-12-15
Abstract: Использование: газоснабжение природным газом и газобалонные установки сжиженного газа для автоматического поддержания рабочего давления на заданном уровне. Цель: повышение точности регулятора. Сущность изобретения: регулятор содержит корпус 1 с входным 2 и выходным 3 штуцерами, мембрану 5, тягу 6, задающую пружину 7, установленную на стержне 11, шарнирно соединенном с регулирующим органом 8. Стержень 11 служит направляющей для задающей пружины 7, которая при сжатии входит во втулку 12. Положительный эффект: повышение точности и получение оптимальных выходных характеристик регулятора. 1 з.п.ф-лы, 1 ил.
Patent RU-2102946-C1 (RU)
Inventor: LUGOVAJA S G
IPC: A61F7/02
Filed: 1991-06-17
Granted: 1998-01-27
Abstract: FIELD: medical engineering. SUBSTANCE: device has two covers made as separate box-type plate articles from flexible heat-conducting material with fastening members placed on them and plastic heat carrier having heating spiral or heated liquid inside them linked together with C-shaped clamp of variable rigidity. EFFECT: enhanced accuracy in positioning device. 7 cl, 2 dwg
Patent RU-2010775-C1 (RU)
Inventor: BIRYUKOV ALEKSANDR S
IPC: C03B37/018
Filed: 1991-06-21
Granted: 1994-04-15
Abstract: FIELD: chemical and electrical engineering. SUBSTANCE: novel method for manufacture of blanks for activated fiber light guides based on quartz glass included steps of feeding working gas mixture made up by SiCl 4 +O 2 +Ar and vapors of matter containing alloying component from one end of bearing pipe, initiating stationary SHF discharge from opposite end of pipe, and precipitating reaction products on internal surfaces of this pipe. Working gas mixture and vapors of matter containing different alloying components were alternately admitted into pipe, separately for each alloying component. EFFECT: higher quality.
Patent RU-2017179-C1 (RU)
Title: Device for conversion of aperture angle of light flow
Inventor: ISLAMOV MIDKHAT S
IPC: G02B17/02
Filed: 1991-06-25
Granted: 1994-07-30
Abstract: FIELD: optical industry. SUBSTANCE: device is shaped as rotation ellipsoid 1. Light source 2 is placed in one of its focuses. At least one reflector part which is placed on its longer axis is made as piece of gradient light guide 5. EFFECT: increased functional capabilities. 1 dwg
Patent RU-2010170-C1 (RU)
Title: Proportioner
Inventor: MISHUTA VIKTOR N
IPC: G01F11/04
Filed: 1991-06-26
Granted: 1994-03-30
Abstract: FIELD: proportioners for foods. SUBSTANCE: proportioner has housing with inlet bin and revolving drum with radial cylindrical passage in which plunger made in form of ball is mounted. Passage is provided with internal thread in which travel limiter is screwed. Housing is provided with detachable cover whose axis is located in plane of rotation of drum passage. EFFECT: enhanced efficiency. 2 dwg
Patent RU-2040594-C1 (RU)
Inventor: USTYUGOV ALEKSEJ G
IPC: C25F7/00
Filed: 1991-07-01
Granted: 1995-07-25
Abstract: FIELD: electroplating. SUBSTANCE: installation is provided with a table. The unit for axial feeding of rods 6 is constructed as a roller conveyer. A unit for rotation of the rods serves as a current lead and is constructed as two horizontal sets of rollers which are interconnected electrically and pneumatically to permit rotation in one direction. The rollers are arranged on both sides of an electroplating bath whose face walls are provided with sets of openings 30 for passing rods 6. EFFECT: enhanced reliability. 7 cl, 4 dwg
Patent RU-2008819-C1 (RU)
Title: Method for appendectomy and device for appendectomy
Inventor: KUTOVOJ ALEKSANDR B
IPC: A61B17/00
Filed: 1991-10-04
Granted: 1994-03-15
Abstract: FIELD: medicine. SUBSTANCE: after cutting mesoappendix, appendix vermiformis is placed in hollow cylinder of device whose conical working end is invaginated together with base of appendix vermiformis into hollow of caecum. Processes are cut with loop located in case, cylinder together with process is removed, and at the same time, pursestring suture is tightened. EFFECT: simplified operation technique and prevented complications involved in contamination of operation field during operation. 2 cl, 1 dwg
Patent RU-2019253-C1 (RU)
Title: Device for liquid degassing
Inventor: SHISHKIN VIKTOR V
IPC: B01D19/00
Filed: 1991-09-16
Granted: 1994-09-15
Abstract: FIELD: liquid degassing. SUBSTANCE: device has a body, vacuum pump, liquid supply and liquid and gas discharge systems. The vacuum pump is made as an anchor ring located on a rod installed in pipes secured in the upper and lower branch-pipes of the body; the rod has a rack that is engageable with a drive reversible gear, the body is made of four branch-pipes where the upper branch-pipe communicates with the gas discharge system, the two side branch-pipes communicate with the water supply system, and the lower branch-pipe communicates with the liquid discharge system. EFFECT: enhanced effectiveness. 1 dwg
Patent RU-2006450-C1 (RU)
Inventor: VIKTOROV VLADIMIR N
IPC: E02F5/00
Filed: 1991-07-02
Granted: 1994-01-30
Abstract: FIELD: handling engineering. SUBSTANCE: crane-pipe layer has base machine 1 with frame 2, boom 3 pivotally mounted by one end on frame 2 and made with pulley 4 on its free end, support 5 mounted on base machine 1, hydraulic cylinder 6 for tilting boom 3 located on support 5 and connected to boom 3. The crane-pipe layer also has winch 7 with cargo cable 8 reeved through pulley 4 of boom 3, lifting lever 9 which one end is pivotally mounted on base machine 1 on the side opposite to boom 3 and made with pulley 10 on the other end for its lift, bulldozer blade 11, guide 12 longitudinally positioned under boom 3 rigidly connected to it and made with pulleys 13 and 14 on the ends. Moreover, the crane-pipe layer has additional frame 15 with rollers 16 mounted on guide 12 for displacement of frame 15 along the guide, pipe 17 fixed to bulldozer blade 11 and made with bypass pulley 18 on its end, bearing post 19 located on support 5 and made with pulley 20 on its free end, additional bearing post 21 mounted on base machine 1 on the side opposite to boom 3 and made with pulley 22 on its upper end. The crane- pipe layer also has drawing off cable 23 fastened by one end on additional frame 15 on the side of base machine 1 and passed through pulley 14 of the end of guide 12 on the side of machine 1, pulley 20 of bearing post 19 and reeved by the other end through pulley 22 of additional bearing post 21 and pulley 10 of lifting lever 9 to form pulley block 24. Bulldozer blade 11 is fixed to additional frame 15, and cargo cable 8 is reeved through pulley 13 of the end of guide 12 opposite to machine 1 and pulley 18 of pipe 17 and passed through pipe 17 and fastened to additional frame 15 on the side opposite to machine 1. Lifting lever 9 may have counterweight 25 and also a counterweight lifting-lowering drive. EFFECT: reduced wear of running part, improved service life, reduced fuels and lubricants consumption. 4 dwg
Patent RU-2001933-C1 (RU)
Inventor: PANKOVA LYUDMILA S
IPC: C09D5/26
Filed: 1991-12-06
Granted: 1993-10-30
Abstract: Использование: термоиндикаторна  краска, работающа  в диапазоне температур 100 - 782&deg;.  Сущность краска включает. %: полиметилфенилси-  локсановэ  смола 14.7 - 15.7; метафосфат натри   5.3 - 62; диметилглиоксим никел  22 - 3,1; железна  лазурь 0.3 - 0.9; хлорированный фталоцианин  меди 2.1 - 2,7 и этиловый спирт 73.1 - 73,9 Краска  позвол ет получить семь новых цветовых переходов . 1 табл.
Patent RU-2067701-C1 (RU)
Inventor: YUSHCHENKO VLADIMIR I
IPC: F16F9/42
Filed: 1991-12-18
Granted: 1996-10-10
Abstract: FIELD: mechanical engineering. SUBSTANCE: cooling system has housing of hydraulic shock absorbers and cooler and expansion tank connected with housing. Double-acting hydraulic cylinder has two working spaces. Installed at outlet of each working space are intake valve connected by pipe with cooler and expansion tank, and outlet valve connected with housings of hydraulic shock absorbers. Hydraulic accumulator is installed on pipe between hydraulic cylinder and housing of hydraulic shock absorbers. Rod of hydraulic cylinder serves for coupling with suspension swinging arm. EFFECT: enhanced cooling. 1 dwg