baber/WOPTO huggingface dataset:
Patent GB-1291575-A (GB)
Title: Methods and apparatus for the production of semiconductor devices by electron-beam patterning and devices produced thereby
Inventor: SPICER DENIS FRANK
IPC: H01J37/305
Filed: 1969-07-03
Abstract: 1291575 Programmed control TEXAS INSTRUMENTS Ltd 30 June 1970 [3 July 1969] 33555/69 Heading G3N [Also in Division H1] In the manufacture of a semi-conductor device such as an integrated circuit, wherein an oxidecoated silicon wafer coated with a photo-resist is scanned by an electron beam to expose the resist, the wafer is located approximately by visual observation and accurately in response to signals obtained by scanning it with the beam. The wafer may be inscribed with a coarse grid with a pitch of 2À5 mm and a finer grid with a pitch of 250 microns for alignment purposes, Figs.1 and 2 (not shown). In addition each 250 micron square which is to form a semi-conductor cell may be provided with a reference marker cross, Fig. 5 (not shown). The wafer is mounted on a worktable 20, Fig. 4, and aligned with the aid of the coarse grid observed through a mirror 23 and an optical microscope 22. The marker crosses on the centre line of cells are then scanned by the electron beam to produce secondary emission which is amplified by a channel multiplier 24 and fed to a cathode ray display 26 to enable the operator to check the alignment and make any fine adjustment which is necessary. Thereafter 100 cells are exposed in sequence by the electron beam under the control of the punched paper tape reader 31, after which the table 20 is moved mechanically 2À5 mm and the alignment and exposure steps repeated, and so on until the whole wafer has been treated. The output from the tape reader 31 comprises indications of the starting co-ordinates (X 1  Y 1 ) within each cell and of the scan amplitudes (X L  Y L ) necessary to expose the required areas. These are converted in pattern generator 27, illustrated in detail in Fig. 6 (not shown) into analogue signals controlling the currents through the deflection coils and into blanking signals which deflect the beam into an inoperative position. The circuits include distortion correction circuits, Fig. 6F (not shown) which add components such as ay<SP>3</SP> and byx<SP>2</SP> to the Y deflection coil, a hysteresis logic circuit, Fig. 6E (not shown) which ensures that stepping signals are applied to the deflection coils in a correct sequence to avoid errors due to magnetic hysteresis, and pattern alignment circuits which allow small shifts in any direction, a small rotation, or a small change in pattern size to be produced by the operator. The sweep rates of the rasters can be adjusted to give the required electronic exposure for the resist being used. An alternative way of marking the wafer comprises inscribing grids of n type material in a p-type wafer and reverse biasing the junction; when scanned by the electron beam, current pulses pass through the junction, Figs.7 and 8 (not shown).
Patent GB-321829-A (GB)
Title: Improvements in reciprocating engines or motors with oppositely moving pistons working in cylinders
IPC: F01B9/06
Filed: 1928-11-16
Abstract: 321,829. Richards, W. H. B. Nov. 16, 1928. Four-stroke-cycle engines; driving-gear.-Two sets of oppositely moving pistons b, b<2>, b<4> and b<1>, b<3> are connected to two pairs of side bars c, c<1>, Fig 3, and d, d<1>, the sets moving together and four combustion chambers being formed between the pairs of pistons. The drive is on to cranks or as shown eccentrics k, m through cross-sliding members j, which move in the ends of the bars. Leakage past the side bars is prevented by spring-pressed wedges. A number of engines as described may drive one crank shaft, the eccentrics being disposed at an angle to each other.
Patent GB-452853-A (GB)
Title: A process for the preparation of extract of lemon in powder
IPC: A23L2/08
Filed: 1934-11-23
Abstract: Lemon powder is obtained by slowly drying a paste of concentrated lemon juice and citric acid powder and disintegrating the mass obtained.ALSO:Lemon powder is obtained by slowly drying a paste of concentrated lemon juice and citric acid powder and disintegrating the mass obtained.
Patent GB-215408-A (GB)
Title: Improvements in amusement slides and in carriages for use therewith
IPC: A63G31/00
Filed: 1924-01-12
Abstract: 215,408. Cole, H. H., and Sedgwick, F. Jan. 12, 1924. Tracks for recreation.-In amusement slides, part of the floor of which is formed of one or more rotating wheels a, the cars or toboggans c are attached to one or more guides, which may be in the form of a cable f, passing round the heels g of the wheels a, as shown in Fig. 3, or, as shown in Figs. 1 and 2, an arm d may be secured to the car c and provided with rollers e engaging a guide b. The guide b may be made movable relatively to the wheel a to vary thedirection of motion of the cars, which are driven outwards at the bends by centrifugal force. Specifications 192,259 and 215,690 are referred to.
Patent GB-447908-A (GB)
Title: Improvements in internal combustion engines of the liquid-fuel injection compression-ignition type
IPC: F02B19/04
Filed: 1934-11-24
Abstract: 447,908. Oil engines. BLACKSTONE & CO., Ltd., and CARTER, W. E., Rutland Engineering Works, Stamford, Lincolnshire. Nov. 24, 1934, No. 33801. [Class 7 (iii)] The combustion chamber 3 of a compressionignition engine is connected to the working cylinder through a passage into which a projection 5 on the piston 1 enters, and one or more inclined slots 6 or the equivalent are cut across the projection to lead the air across the extension to the further wall of the combustion chamber. Air is also admitted into the chamber tangentially through a groove 7 cut in the wall of the chamber or in the projection. The groove may stop short of the top of the projection so that it is only uncovered at the end of the compression stroke. A fuel injector 8, which may be offset or inclined to the piston axis, and the inlet and exhaust valves are located in the combustion chamber, which may be of cylindrical, spherical or ellipsoidal form.
Patent GB-212630-A (GB)
Title: Cutter chain for mining machines
IPC: E21C35/193
Filed: 1922-12-12
Abstract: 212,630. Marks, E. C. R., (Goodman Manufacturing Co.). Dec. 12, 1922. Coal-cutting machines.-The cutter chain of a mining-machine is formed of blocks connected by links 2, the body of each block having an uninterrupted inclined front face 8 and being rearwardly tapered; an inclined aperture receives a bit 6 which abuts against a pin 13 and passes through an aperture 17 in a clamping member 14 inserted in the block 1 from the rear and adjusted by a nut 19. The clamping member is held against rotation or falling out by a pin 20 and has a relatively hard gripping surface preferably formed by a set screw 23. A projection 11 on the block 1 supports the outer end of the bit. The bit is double-ended and of uniform section.
Patent GB-1087981-A (GB)
Title: Improvements in or relating to solid bead wires for pneumatic tyres
Inventor: MULLINS WILLIAM JOSEPH
IPC: B29D30/48
Filed: 1963-08-28
Abstract: 1,087,981. Making pneumatic tyre bead wires; rolling annular bodies. DUNLOP RUBBER CO. Ltd. Aug. 7, 1964 [Aug. 28, 1963], No. 33976/63. Headings B3A and B3M. [Also in Division B7] A method of manufacturing a pneumatic tyre bead wire comprises forming an annular billet having a volume equal to that of the finished wire and rolling the billet to form a bead wire of the required dimensions. The billet is formed by cutting a predetermined length from a steel tube. The billet is cold rolled, each portion thereof passing several times between the rolls. Alternatively the billet may be hot rolled.
Patent GB-1144557-A (GB)
Title: Improvements in fastening devices
IPC: F16B37/00
Filed: 1966-07-29
Abstract: 1,144,557. Screw sockets. TINNERMAN PRODUCTS Inc. 29 July, 1966 [16 Aug., 1965], No. 34072/66. Heading F2H. A fastener for insertion through an opening 4 in a support 5, and made from polymeric material, comprises a head 8 with an aperture 46, a tubular member 38 extending from the head with a bore 58 communicating with the aperture 46 for receiving a threaded element T therein, and locking members 10 and 12 extending from the head portion alongside the member 38 to be expanded laterally by insertion of the element T to retain the fastener in the opening 4. The bore of the tubular member 38 may have ribs (66), (68), (70), and (72), Fig. 8, not shown. The head 8 may be of circular shape.
Patent GB-615738-A (GB)
Title: Improvements relating to internal expanding brakes
IPC: F16D65/14
Filed: 1945-12-18
Abstract: 615,738. Internal expanding brakes. ASSOCIATED MOTOR CYCLES, Ltd., and WALKER, P. A. Dec. 18, 1945, No. 34273. [Class 103 (i)] In a brake comprising one or more pairs of brake shoes with brake operating means, including a cam for each shoe, the contour of each cam is such that the mechanical advantage of the brake operating means decreases as the brake linings wear. The brake shown comprises a pair of shoes pivoted at non- adjacent ends and actuated by cams 7 engaging rollers 6, the return springs 8 being connected between the cams and the shoe webs. Each cam is formed with a convex portion 7a merging into a straight portion and with a straight or slightly concave portion 7b which rests on the pivot pin 5 of the adjacent shoe in the " off " position and is located between the limbs of the forked end of the shoe. The cams are mounted on splined pivot pins 5a integral with or rigidly secured to levers 9 connected by a detachable turnbuckle 11 and with a common brake-operating rod. The cams may be reversed on their pivots as indicated in Fig. 2. One lever 9 may be formed with a pointer 12 which co-operates with a scale 13 to indicate the state of wear of the linings. In a modified construction comprising more than one pair of shoes, the shoes may be operated simultaneously through linkage or by a central gear meshing with gears secured to or integral with the cams.
Patent GB-474943-A (GB)
Title: Improvements in and relating to moving floors for vehicles
IPC: B60P1/38
Filed: 1936-12-15
Abstract: 474,943. Movable floors for loading vehicles. BROMILOW & EDWARDS, Ltd., and SWIFT, H. W. Dec. 15, 1936, No. 34411. [Class 78 (iv)] In movable floors for vehicles comprising a band of flexible material secured at its ends to drums or rollers and provided with front and rear manually-operated gearboxes, each effective to drive the band in one direction, a power-driven gear-box is fitted which is complementary to the manually-operated gear-boxes and selectively connectable to either of them to drive the band. In the construction shown the band and manuallyoperated gear-boxes are as described in Specification 376,425, and the power gear comprises a divided shaft 12, carrying bevel wheels 23, 24 constantly in mesh with a bevel wheel 22 on a driving- shaft 21 connected by belt gear to a counter-shaft operated from the engine gear-box. The halves of the shaft carry hand-operated sliding clutches 26 31 alternatively engaged at will either to drive the gear-box 8 to move the floor forwardly or to drive the gear-box 9 through the sprocket gear 34 and shaft 13 to move it rearwardly. A sliding horizontal shaft, carrying upwardly-extending clutchengaging forks, is moved by linkage 42, 43, on the driver's cab to position the clutches as desired ; a spring normally maintaining this linkage with both clutches disengaged. The diminishing diameter of the rolled-up portion of the floor on its end rollers as it winds off, may cause (1) a spring-pressed lever 62, Fig. 3, to actuate an indicator 61 or (2) may cause a. similar lever 67 to move the linkage 43 to disengage the clutches when the belt is fully unwound. When both clutches are disengaged, the floor can be operated manually on applying a crank handle to the squared ends of the shafts 12. One of these latter shafts can also be uncoupled from the gear-box 8 and used as a power take-off device for performing other operations. Specification 383,463 is referred to in the Provisional Specification.
Patent GB-1199383-A (GB)
Title: Control System for a Cable Drum.
IPC: B66D5/10
Filed: 1968-07-19
Abstract: 1,199,383. Controlling winch drums. RUSTON & BUCYRUS Ltd. 19 July, 1968 [2 Aug., 1967], No. 34428/68. Heading B8B. [Also in Division F2] A system for interlocking the actuation of a brake and a clutch associated with a cable drum 10 such that the clutch is not disengaged until the brake is fully applied and that the clutch is not re-engaged until the brake is again fully applied, comprises a normally engaged clutch band 23 which is hydraulically disengageable once a solenoid-operated hydraulic supply valve 43 is operated due to an electrical contact 39, 41 being established once the brake band 30 has been mechanically applied. The brake band 30 is applied by depression of a foot pedal 38 which is linked to the band 30 by rods 32, 33 having a lost motion cylinder 34 therebetween, and a bell-crank lever 31. The electrical contacts 39, 41 are mounted on the cylinder 34 and rod 32 so that no contact takes place until the brake has been applied and a spring 36 compressed. A normally open contact 47 is closed to energize the solenoid valve 43 and its warning lamp 51 by a latching relay 48 energized by the contact at 39, 41, the valve 43 then permitting supply of pressurized fluid to the clutch disengaging cylinder 25, through a rotary coupling. Pivoted levers 20, 21 extending between the ends of the clutch band 23 and opposite ends of the cylinder arrangement 25 are normally biased into the clutch-engaging position by a spring 27 which is compressed when the fluid is supplied to the cylinder, the whole clutch arrangement being mounted at pivots 19 on a clutch driver 18 keyed to the powered shaft 17. With release of the brake pedal 38 and breaking of the contacts 39, 41, the latching relay 48 will continue to hold the contact 47 closed to keep the clutch disengaged, until the contacts 37, 41 are again closed by application of the brake. In the embodiment of Fig. 2 (not shown), the contacts and latch relay operated by the braking action are replaced by a switch which with one push energizes the clutch solenoid valve and with the next push de-energizes the same.
Patent GB-1304537-A (GB)
IPC: H01R12/57
Filed: 1970-07-17
Abstract: 1304537 Soldering INTERNATIONAL BUSINESS MACHINES CORP 17 July 1970 [1 Aug 1969] 34643/70 Heading B3R [Also in Division H2] A laminated, resolderable connector 20 has an interior 22A of a metal of less solubility in a lead containing solder than copper but is wettable by said solder. An exterior 22B of a metal is preferably wetted by the solder. The interior is preferably of nickel but may be any solderable refractory metal such as tungsten or molybdenum and the exterior is preferably oxidized Kovar but may be tantalum, stainless steel or Iconel (R.T.M.) The connectors are brazed to a pad 15 on a substrate by placing a disc of Niovo (82% gold, 18% nickel) between the connector and pad and heating the whole in a hydrogen furnace. After the braze is complete the Kovar surface may be oxidized by passing moisture into the furnace. Pins 31 are soldered to the connectors 20, the solder being contained in the connectors and heated by passing a current through a resistive strip (33, Fig. 4, not shown) which passes under the pads 15. The pins may be unsoldered by heating the connectors.
Patent GB-935556-A (GB)
Title: Improvements in and relating to aircraft gun mountings
Inventor: COWBURN C D
IPC: F41A27/10
Filed: 1960-10-11
Abstract: 935,556. Aircraft gun mountings. ENGLISH ELECTRIC CO. Ltd. Oct. 5, 1961 [Oct. 11, 1960], No. 34744/60. Class 92. Relates to an aircraft gun mounting which fulfils the usual requirements that:- (a) the recoil and runout loads are reacted at the front of the gun cradle; (b) the torque loads and part of the weight are reacted at the rear end of the gun cradle; (c) the gun is stabilized at approximately the middle of its length. According to the invention, this is done by a two-point mounting in which the gun cradle 11 is mounted on the aircraft structure on the rear only at the point 1 to meet requirement (b) and requirements (a) and (c) are both met by a detachable ball joint 16, 17 secured to the aircraft structure 2 and in which the barrel 12 is fitted slidably, the ball joint being located in the middle of the length of the gun barrel and the ball 16 forming part of a hollow conical body 15 detachably clamped at its rear end to the front 13 of the gun cradle 11. Interengaging longitudinal splines form on the ball-and-socket parts 16, 17 permit the ball 16 to be slid axially in and out of the socket 17 and to be secured in the socket longitudinally by twisting the cone 15 half a peripheral pitch of the splines while leaving the freedom of the ball joint unaffected. The gun may be readily removed by releasing a clamp ring 14 and partially withdrawing the barrel 12. After releasing the attachments at the rear of the gun, the cradle assembly 11 can be removed and the barrel 12 withdrawn backwards through the cone 15. Assembly is made in reverse of this procedure. Harmonization of several guns can be effected by adjusting the rear mounting unit only.
Patent GB-1237403-A (GB)
Title: Justifier mechanism for a typewriter or the like
Inventor: HORVATH GYOZO
IPC: B41B27/00
Filed: 1968-07-22
Abstract: 1,237,403. Typewriters &c. IRODAGEPIPARI ES FINOMMECHANIKAI VALLALAT. 22 July, 1968, No. 34928/68. Heading B6F. Justification of typed lines.-A method of producing justified typed lines comprises distributing the number of basic units constituting the difference between an unjustified line of text and a predetermined line length amongst all the word spaces in the line such that adjacent spaces differ in length by no more than one basic unit. As diagrammatically illustrated in Fig. 2 a sensor T moving in a path M in a program for justifying a line with four inter-word spaces distributes the fourteen basic units as two four unit spaces, determined by the highest lever surface, and two three unit spaces by the next level. As diagrammatically shown in Fig. 1 twentyeight units of spaces E may be distributed over twenty-eight word spaces S. In the example illustrated twenty-six units have to be distributed over twelve word spaces. One control e.g. an adjusting disc 3, Fig. 3, sets a programme of unit spaces and a second control e.g. an adjusting disc 5 sets a sensor 8 to the starting point of the programme. In the example Fig. 1 three units of space are distrubuted over the first two spaces and two units are distributed over the other ten spaces. The adjusting disc 3, Fig. 3, rotates three gears each coacting with a rack 4 which are correspondingly set. The racks have depths corresponding to 2, 3 or 4 units and tilt the sensor 8 as it is moved every time a word space is typed. The tilting of the sensor rocks a frame 10 and a link 12 adjusts the spacing mechanism accordingly. The starting position of the sensor 8 is determined by the number of word spaces involved and this is set by the adjusting disc 5. In the home position a spacebar action from a bolt 17 engages in a cut-out tooth K and stepping is terminated. In further embodiments described the spacing programme is determined by a stepped surface cylinder (Fig. 4) or by a series of sectors 27 (Fig. 5).
Patent GB-213329-A (GB)
Title: Improvements in and relating to the headlights of vehicles
IPC: F21V14/02
Filed: 1922-12-23
Abstract: 213,329. Ayer, J. Dec. 23, 1922. Mounting electric lamps in lanterns.-In a vehicle head lamp having a divided reflector, the forward portion i of which is fixed and the rear portion h carrying the light source is adapted to be tilted about a horizontal axis, the arrangement is such that the tilting axis is in a medial plane and to the rear of the light source. The rear part of the reflector is carried by a spindle j adapted to be actuated by a rod, wire or other control in opposition to a return spring.
Patent GB-607977-A (GB)
Title: New or improved casement stay
IPC: E05C17/28
Filed: 1945-12-28
Abstract: 607,977. Stays for hinged &c. articles. HOLDT, W. A. Dec. 28, 1945, No. 35120. [Class 65 (i)] A stay comprising a guide bar 1 fixed to a casement 2, a sleeve 7 slidably engaging the guide bar, and a stay bar 12 pivotally connected to the sleeve and to the frame 16 is provided with a spring element which tends to keep the sleeve in frictional engagement with the guide bar. As shown, the stay bar is an upwardly bent resilient metal member which tends to force the sleeve against the underside of the guide bar, the said underside being formed with a series of notches adapted to be engaged by the sleeve.
Patent GB-511422-A (GB)
Title: Air propeller
IPC: B64C11/22
Filed: 1937-12-20
Abstract: 511,422. Screw propellers. SCHWARZ, G., and SCHWARZ, O. Dec. 20, 1937, No. 35211. Convention date, Dec. 24, 1936. [Class 114] A laminated wooden screw propeller has the tip portion composed of light material such as Balsa wood which is compressed into its final shape from a body of larger dimensions; the tip also having a reinforcing coating of wood veneer. The propeller blade is composed of laminations 1 of light wood having a mortise joint 2 with laminations 3 of hard wood which constitute the blade root and are fitted in a metallic sleeve 4. Dove-tailed into the intermediate portion 1, which may have lightening cavities 5. is the tip portion 6 of Balsa wood which is compressed in a die and covered with a multi-layer wood veneer 9 which is fixed thereto by glueing. The grains of the superposed veneers are disposed crosswise and obliquely-to the axis of the blade. The complete blade is coated with a cellulose derivative 10 applied iin a semi-plastic state under high pressure, and there may be embedded therein a reinforcement consisting of wire or fibre mesh 13. Toward the root of the blade the intermediate laminae may be provided with side portions which are glued thereto. For the laminations 1 a low specific gravity wood such as pine may be used. '
Patent GB-987659-A (GB)
Title: Subsurface well bore apparatus
IPC: E21B29/00
Filed: 1963-09-06
Abstract: 987,659. Boring earth &c. SERVCO CO. Sept. 6, 1963 [Sept. 7, 1962], No. 35284/63. Heading E1F. [Also in Division B3] A well-tool, such as a tool for parting off and turning the end of a tubular conduit in a well bore, comprises a tubular body 16, adapted to be fixed to a rotatable drill string at 12, cutters 78 pivoted on the body, and an axially movable cam 62, connected to a spring urged piston 48, for expanding the cutters. A flow control assembly comprises an upper cone 34, and a lower element 35, welded in the bore 20 of body 16. A rod 41 is carried in the assembly and cooperates with a larger bore 73 in the piston which has a divergent upper portion. The tool is lowered into the conduit with the cutters retracted. Gas, water, or drilling mud is pumped through passage 18 and passes through openings 46 in the flow control assembly, between rod 41, and bore 66, and out through the bottom of the tool. The pressure above the piston increases to force the latter against spring 61, so that cam 62 expands the cutters until they engage stops 102, at which stage, rod 41 is in the diverging part of bore 73, thus allowing the pressure to decrease. In a modification an inverted rod 41 attached to the piston is provided, which co-operates with a bore in a separate member.
Patent GB-794194-A (GB)
Title: Improvements in or relating to dry rectifiers
IPC: H01L25/03
Filed: 1954-12-06
Abstract: 794,194. Rectifiers. SIEMENS-SCHUCKERTWERKE AKT.-GES. Dec. 6, 1954 [Dec. 15, 1953], No. 35315/54. Class 37. In a method of assembling dry-plate rectifiers, the terminal elements are first assembled in a pile and are held in position by insulating material, e.g. sleeves 4, 5, Figs. 1 and 3, members 27, Fig. 6, sleeve 45, Fig. 8, and the rectifying plates are then inserted and may be held by a further sleeve 8, Figs. 1, 3 or 46, Fig. 8. The further sleeve may be replaced by a spring clip acting via an in sulating strip to clamp the pile together, Fig. 4 (not shown). The assembly may be sprayed or soaked with lacquer to exclude moisture and give a firm structure or may be coated with a plastic material which subsequently shrinks in response to heat or the action of a catalyst.