baber/WOPTO huggingface dataset:
Patent GB-1498646-A (GB)
Title: Surface acoustic wave transmission device and method of manufacturing same
IPC: H03H9/25
Filed: 1975-02-12
Abstract: 1498646 Blasting THOMSON CSF 12 Feb 1975 [15 Feb 1974] 6059/75 Heading B3D [Also in Division H3] A method of manufacturing a surface acoustic wave device comprises cutting a substrate, preferably of piezoelectric material, from a wafer by means of a jet 13 of abrasive particles, the jet simultaneously being used to profile and erode edges of the substrate so that in use unwanted surface waves are scattered. The abrasive particles may be sand in compressed air and may have a size of 50 microns. The cross-section of the -jet may be circular or elongated, in which case the width of the substrate subject to abrasion may be varied by altering the alignment of the jet relative to the direction of cut. As shown, a wafer is mounted on a table 6 movable by motors 14, 15 below a single fixed jet 13 for a nozzle 12 surrounded by a suction head 11. Alternatively two jets having conversing axes may be used on a fixed table in conjunction with a movable jet. During abrasion a screen (16, Fig. 2, not shown) may be provided to protect transducers 10 on the substrate.
Patent GB-1380614-A (GB)
Title: Hydraulic braking systems
IPC: B60T13/14
Filed: 1972-02-09
Abstract: 1380614 Servo-assisted master cylinders DAIMLER-BENZ AG 9 Feb 1972 [17 Feb 1971] 6081/72 Heading F2F In an hydraulic braking system, a valve comprises a master piston 6 in a cylinder operable by a piston-rod a first chamber on one side of the piston supplying the brakes via a primary valve in the cylinder opened by pressure from an accumulator 25 and a regulating valve which is opened for brake actuation, and the opposed chamber being subject to regulated accumulator pressure through a valve operable by the accumulator pressure. Two such master piston and cylinder combinations 2, 3 actuating front and rear brakes 4, 5, and operated by a balance beam or equalizing lever via rods 7, upon initial movement move tappets 13 via abutment members 12 and springs 11 to shut off communication to a reservoir 29 by plates 17. Accumulator pressure opens the regulating valves constituted by sleeves 22 and pistons 18, causing pressure fluid to flow through passages 23, 27, 46, 47, 35 to the brakes 45. When the pressure increases to a value which counteracts the springs 11, the regulating valves close, providing a brake pressure proportional to actuation of the master piston 6 and, thus, pedal travel. Pressure in each first chamber is balanced by pressure in the opposed chamber from the regulating valve via line 31 and a one-way valve 33. Piston retraction causes movement of the tappets 13 which allow fluid to pass to the reservoir. Upon accumulator failure, the regulating valves remain closed and piston travel directly provides the brake pressure. The abutment members 12 carry knife-edges 16 which engage with seals 15 providing the primary valves to avoid fluid passing through the passages 46, 47, 27. The pistons 6 suck fluid from the reservoir 29 via a non-return valve 38. If a leak develops in one brake line, the associated regulating valve 18, 22 is still opened. This causes the associated piston 6 to advance since fluid under pressure is entering the opposed chamber, until the knifeedge of the cup-member 12 engages the seal 15, so that no more pressure fluid passes to the defective tine.
Patent GB-415716-A (GB)
Title: Improvements in or relating to thermionic oscillation generators
IPC: H03B5/16
Filed: 1933-02-28
Abstract: 415,716. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and MOULLIN, E. B., 189, Morrell Avenue, Oxford. Feb. 28, 1933, No. 6135. [Class 40 (v).] The frequency of a valve oscillator is stabilized by feeding back to the grid a voltage derived partly from one branch, and partly from another branch, of the resonant anode circuit, with the object of preserving strict anti-phase between the anode and grid voltages. When two valves are used, the derived voltages are applied separately to their respective grids. As shown in Fig. 1, resistances R1, R2 are connected in the inductive branch L1 and in the capacity branch CL2 of the tuned anode anode circuit, the two branches having the same phase angle. The grid circuit includes series-connected coils M1, M2 coupled to the coils L1, L2 the derived voltages being equal in amplitude and phase-displaced in opposite senses relatively to the anode voltage. The resultant grid voltage is thus in anti-phase with the anode voltage. When two valves are employed, Fig. 3, their anodes are directly connected, and their grids excited one by connection through a block-condenser BC to the junction of L1 and R1 and the other by connection to the junction of C and L2.
Patent GB-1270829-A (GB)
Title: A novel steroid precursor
IPC: C07C35/06
Filed: 1969-07-28
Abstract: 1,270,829. Steroid precursor. STERLING DRUG Inc. 28 July, 1969 [5 Aug., 1968], No. 6198/71. Divided out of 1,270,828. Heading C2C. The novel compound 2-(7,11-dimethyl-trans, trans - dodeca - 3,7,11 trienyl) - 3 - methylcyclopent-2-en-1-ol is prepared from the corresponding ketone by reduction with a metal hydride or with an aluminium alkoxide.
Patent GB-1464911-A (GB)
Title: Heat pipes
IPC: F28D15/04
Filed: 1974-02-12
Abstract: 1464911 Heat pipes Q-DOT CORP 12 Feb 1974 [14 Feb 1973] 06292/74 Heading F4U A heat pipe, preferably with a capillary lining 34 comprises an elongated sealed conduit 22 containing a working fluid, and an open-ended tube 32 disposed within the conduit 22 adjacent the bottom of the conduit. The tube 32 has tapered end openings 32b, and outlet ports 32a near the end openings. In operation of the heat pipe 20, the working fluid evaporates in the evaporation section adjacent end cap 28 and flows through the conduit 22 outside of the tube 32. The fluid is condensed in the condensation section adjacent end cap 34, enters tube 32 via openings 32a and 32b, and returns through the tube 32 to the evaporation section. The distribution of the liquid in the evaporation section is aided by liquid flowing out of the apertures 32a into the capillary structure 34.
Patent GB-549450-A (GB)
Title: Improvements in furnaces
IPC: C21D9/00
Filed: 1941-05-16
Abstract: 549,450. Heat treatment furnaces. GIBBONS BROS., Ltd., and DEWIDELS, J. May 16, 1941, Nos. 6318/41 and 5503/42. [Classes 51 (i) and 51 (ii)] A furnace for the heat treatment of 'materials comprises a chamber 10, Fig. 1, through which goods to be treated are conveyed in communication through spaced openings 28 with a chamber 25 in which are arranged tubular elements 26 heated by the combustion of fuel and over which the furnace atmosphere in the chamber 10 is circulated by a fan 29. Combustion products leaving the tubes 26 are led to a chamber 37 where they are employed to heat tubular elements 38 through or over which air or gas is passed and heated before passing to burners arranged at the end of the tubes 26. The goods pass through the chamber 10 on a conveyer 12 arranged over a floor 11 in which openings 30 allow part of the gases to circulate beneath the floor. The goods pass into and out of the furnace chamber through air locks 20, 23. Fig. 5 shows a modification in which the atmosphere is circulated transversely through the treatment chamber 46 and the heating chamber 47 by fans 49, the heating tubes 51 being arranged above and below the furnace chamber 46 which has openings 45, 50 in its side walls. The combustion products from the tubes 51 pass to the air or ,gas heating tubes 38. Figs. 6, 7 and 8 show sectional shapes of the tubes 26, 51. A further modification is shown in Fig. 9, in which the openings 54, 55 for the circulation of the furnace atmosphere are arranged in the top and bottom of the furnace chamber and the combustion tubes 59 are arranged at the sides in the chamber 58. In the furnaces shown in Figs. 5 and 9 the goods are moved through the furnace chamber on skids by pushing devices.
Patent GB-259109-A (GB)
Title: Improvements in or relating to alarm apparatus
IPC: G08B17/04
Filed: 1925-03-23
Abstract: 259,109. O'Brien, M. C. M. March 23, 1925. Burglar and like alarms. - Relates to electric alarms for use in connection with safes, strongrooms, and the like. According to the invention, a pair of pipes convey pressure from sources associated with the safe &c. to a pair of pressureoperable devices, each of which is adapted to move contacts which co-operate with each other and with fixed contacts to control a circuit through an alarm bell or the like, the arrangement being such that an alarm is given when there is any change in pressure due to tampering with the pressure system. In the construction shown in Fig. 1, pipes 200,209<a> convey fluid-pressure from sources such as cavities in the walls and door of a safe to cylinders 210, 210a fitted with pistons. The piston-rod 213 carries a forked member 241 having contacts 241<a>, 241<b>, between which are disposed contacts 241a on a member 242 carried by the second piston-rod. The part 242 also carries contacts 242b disposed between two fixed contacts 247<a>, 247<b>. Wires 244, 245, 249 connect the contacts in circuit with a bell or like alarm, not shown. With this arrangement unequal variations of pressure in the cavities of the safe will effect the closing of the alarm circuit through a contact 242a and one or other of the contacts 241<a>, 241b. Equal small variations of pressure (due, for example, to normal temperature changes) will not cause any closure of contacts, but a great change of pressure will cause the contact 242b to meet either 247<a> or 247<b>. Fig. 2 shows a modification in which each piston rod is adapted to bridge fixed contacts carried by members 263, 252 respectively. The rod 213 also carries tappets 255, 256, adapted to reciprocate a rod 257 carrying a make-and-break device 260. The contacts are wired as shown, in circuits including a. bell 266 and an electromagnet 265, the magnet, when energized, serving to prevent the ringing of the bell by keeping contacts 275, 277 open. In the use of this apparatus the' pistons move in a certain predetermined order and at predetermined speeds, as a result of the normal operations of opening and closing the safe, without causing the bell to ring, but if tampering with the pressure system is attempted an alarm is given.
Patent GB-671500-A (GB)
Title: Therapeutic glandular preparations and procedure for preparing the same
IPC: A61K35/55
Filed: 1950-03-14
Abstract: 671,500. Therapeutic glandular preparations. REICH, A. March 14, 1950 [March 15, 1949], No. 6371/50. Class 81 (i). A stable therapeutic glandular preparation is made by freezing and then finely pulverizing the fresh sex glands of sexually immature young animals. The resulting powder may be mixed with a dessicant and a water-binding material. Specified dessicants are gelatine or pectin. Flour is a suitable water-binding material. Other therapeutic materials, e.g. pituitary, testicular or ovarian glands or vitamins may be mixed with the product. Examples relate to products obtained from the sex glands of male calfs or pigs or female lambs; but mixed glandular material may also be used. The final product may be in the form of pills or tablets containing sugar and cacao.
Patent GB-797359-A (GB)
Title: A machine for use in the application of chair seat and like coverings
IPC: B68G7/05
Filed: 1955-03-04
Abstract: 797,359. Upholstering-machines. LEWIS, E. J., and BAKER, R. H. March 4, 1955, No. 6495/55 Class 52(4) In a machine for use in the application of chair seat and like coverings the covering material 17 is stretched initially by jaws 7, 9, 7a, 9a gripping the material edges and moved apart by compressed air operated pistons, the jaws being clamped together by the action of air operated pistons moving in cylinders 4, 4a, the chair seat frame is then placed in position on the material and forced downwardly by frame 12 operated by air pressure in cylinder 5, the action of the pistons in cylinders 4, 4a reversed to release the edges of the material so they may be secured to the seat frame while the remainder of the material is kept stretched and the seat springs &c. compressed, the final operation being the raising of frame 12 to release the covered seat frame. The compressed air may be replaced by an hydraulic fluid.
Patent GB-409486-A (GB)
Title: Improved process of and means for feeding gas turbines
IPC: F23R3/28
Filed: 1933-03-03
Abstract: 409,486. Gas turbines. COUZINET, R. A. A., 189, Boulevard Bineau, Neuilly-sur- Seine, France. March 3, 1933, Nos. 6527 and 6528. Convention dates, May 20, 1932 and June 14, 1932. [Class 110 (iii).] In a gas turbine, the combustion chamber 1 is fed by a mixing chamber 11 to which compressed air is supplied by a pipe 12, and fuel by a pipe 22 connected to a channel 21 from which it enters the chamber by passages 20. The products of combustion pass to an expansion chamber in front of the turbine, and are mixed with compressed air from the surrounding chamber 4. In a modification, the fuel is injected into the chamber 11, and a pressure gauge is fitted. Long channels 15 in the plate 14 prevent back-firing.
Patent GB-742730-A (GB)
Title: Improvements relating to electric cooking equipment
Inventor: BRANDON GEOFFREY EDWARD
IPC: F24C7/08
Filed: 1953-03-11
Abstract: 742,730. Indicators for switches. SIMPLEX ELECTRIC CO., Ltd. March 4, 1954 [March 11, 1953], No. 6662/53. Class 38(5) [Also in Group XI] An electric cooker having several units,. e.g., an oven, a grill and one or more hotplates each controlled by a switch having: a knob, one or more of the knobs formed of translucent material 26 over the major part of its area, or has a substantial translucent surround and the knobs have individual lamps behind them, each lamp 28 having its terminals or contacts 30 in the rear of an opaque panel or member 13 at the front of which the knob is situated to avoid the passage of leads through the panel to the lamp; and the panel has an aperture 21 or group of apertures masked wholly by the knob alone or in combination with the translucent surround, the current supply to each lamp being effected in dependence on movement of its knob from the off position, so that the lamp indicates when its knob is "on." Each aperture 21 occupies a half or more of the area behind the knob and permits removal of a lamp from the front upon removal of a knob. The translucent part 26 of the knob may be a hollow concave dome with an outer convex face carrying an opaque transverse web 27 serving as a finger piece to operate the knob. An additional lamp for each knob is lit only when a thermostat establishes current supply to a heating unit, is of a different colour- and may be mounted on the holder 30 to illuminate a different paxt of the translucent member. The lamps are supplied from the secondary winding of a common step-down transformer having a primary connected to the main cooker supply. The lamps may be connected across shunt resistors in series with a main heating element or with a ballast resistor. The lamps may be of the gas discharge type energized at mains voltage in parallel with the main heater. The lamps (other than that controlled by a thermostat) may be collectively controlled by a separate switch member as an alternative to the control of the current by switch contacts operated by movement of the knob. The margin of the translucent skirt may have indicia such as "high," "low."
Patent GB-432701-A (GB)
Title: Landing gear for aircraft
IPC: B64C25/14
Filed: 1935-03-04
Abstract: 432,701. Aircraft landing gear. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., SIR W. G., SMITH, G., and BRADE, D. G., Whitley, Coventry. March 4, 1935, No. 6709. [Class 4] In retractable landing-gear for aircraft a landing strut is adapted to be held in the landing position by an extended toggle on which is expansible means for effecting the expansion and contraction of the toggle. The oleolegs 14 are pivoted at 17 and the twopart strut 18 is pivoted at the centre to a cylinder 20, the piston rod 23 being connected to the junction of a pair of links 24, the other end of each of which is pivoted to one limb of the two-part strut 18. The piston may be operated in each direction by fluid pressure from a pump driven by the engine and in the fully extended position of the strut a stop on the piston rod contacts with the cylinder when the two parts of the strut 18 have moved over their dead centre position whereby the strut is locked. In the collapsed position, Fig. 3, the wheel 15 is housed in the wing and may be retained therein by a powerrelease spring-pressed catch. A pair of toggles arranged in diamond fashion may be used. The apparatus may be used to operate a retractable tail wheel or skid.
Patent GB-852456-A (GB)
Title: Improvements in and relating to self-locking sliders for sliding-clasp fasteners
IPC: A44B19/30
Filed: 1959-02-26
Abstract: 852,456. Sliding clasp fastenings. ILOTTE, V., and CRIDA, C., [trading as FABBRICA ITALIANA CERNIERE LAMPO DI ILOTTE, V. & CRIDA, C.]. Feb. 26, 1959 [Feb. 9, 1959], No. 6749/59. Class 44. A self-locking slider for sliding clasp fasteners comprises a slider body 1 provided with an overhanging bridge piece 2 integral with the body at one end 2a and having a gap 2b at the other end to allow for assembly of a pull member 7, the gap 2b being subsequently closed by deformation. The bridge piece 2 is formed on one side with a seat 3 adapted to house a vee-shaped spring 4 which is preferably sheared from a sheet of spring metal and has an extension 5 at one end rigidly fixed in a correspondingly-shaped portion of the seat 3 with its free end 6 protruding through the slider body 1 so as to engage a fastener member on the stringer and thus lock the slider. Release of the spring 4 from the locked position is effected by pulling the member 7 in either the opening or the closing direction.
Patent GB-834157-A (GB)
Title: Improved automatic fibre feeder for treating-machines in the textile industry
IPC: D01G23/00
Filed: 1958-03-03
Abstract: 834,157. Feeding fibres. FELLMANN, I., and BAILLY, L. March 3, 1958 [April 8, 1957], No. 6758/58. Class 120(1) In an automatic fibre feeder for wool &c. comprising a rotary separating drum 1 in which crooking members 4 are carried by longitudinal supports 3 provided at their ends with guide rollers 6 movable in a fixed rollway 7 so that members 4 are projected and retracted from the drum surface during rotation of the drum, the rollway is circular and is eccentrically mounted with respect to the drum axis. As shown, members 4 consist of needles and rollways 7 are formed in plates fixed to the machine frame at each end of the roller. The supports 3 consist of bars slidable within seatings 2 in the roller, needles 4 being guided by bars 5. Needles 4 may be replaced by toothed blades.
Patent GB-1210571-A (GB)
Title: New crystalline aluminosilicates and their method of manufacture
Inventor: STEENBERG LAURENCE RICHARD
IPC: B01J29/08
Filed: 1968-02-12
Abstract: 1,210,571. Synthetic alumino-silicates. UNIVERSAL OIL PRODUCTS CO. 12 Feb., 1968 [13 Feb., 1967], No. 6777/68. Heading C1A. [Also in Division C5] A synthetic crystalline aluminosilicate has three-dimensional cages wherein solid silica is periodically disposed in an orderly and repetitious manner, the material having the molar ratio composition where n is the valence of the cation M; Y is less than 5; and X is from 4 to 11, preferably from 4À5 to 7À0, and most preferably from 4À7 to 6À2. This may be prepared by slurrying particles of the host aluminosilicate (preferably faujasite) in water in the presence of sodium silicate, drying the slurry in contact with carbon dioxide (e.g. in a carbon-dioxide-containing atmosphere) at elevated temperature, washing the dried slurry, and drying. The host particles may be impregnated with sodium silicate solution, separated from the solution together with some sodium silicate, and then slurried with water to form the slurry above. It may also be prepared by mixing aqueous solutions of sodium aluminate and sodium hydroxide with an aqueous slurry of silica, in the mole ratios SiO 2 :Al 2 O 3  from 6 to 20; Na 2 O:SiO 2  from 0À3 to 0À7; H 2 O: Na 2 O from 23 to 60; aging the slurry with agitation, and then aging without agitation at an elevated temperature, cooling and separating the solids from most of the mother liquor, reslurrying, and spray drying in an atmosphere containing carbon dioxide. The particles are then washed and dried. Preferred ratios for the initial reaction mixture are:-SiO 2 :Al 2 O 3  from 8 to 20; Na 2 O: SiO 2  from 0À40 to 0À45; H 2 O: Na 2 O from 35 to 45. The solid may then be pilled by means of a temporary binder, such as vinyl alcohol, which is subsequently removed by calcination, and the pills subjected to ion-exchange to reduce the sodium ion content. A two-step ion exchange may be employed, firstly to introduce Ca<SP>2+</SP>, and then to introduce NH 4 + ions. A Group VIII metal or metal compound may be deposited on these pills to form a hydrocracking catalyst, and this is commonly nickel.
Patent GB-912810-A (GB)
Title: Roll crusher
IPC: B02C4/28
Filed: 1959-02-26
Abstract: 912,810. Roller mills. RUHRCHEMIE A.G. Feb. 26, 1959 [March 24, 1958], No. 6781/59. Class 59. A roller mill is provided beyond the ends of rotatable crusher rollers 2, 3 with plates 7, 8 each having a slot 9 to allow non- crushable coarse and metallic pieces to drop therethrough. Shield plates 5, 6 provided near the ends of the rollers extend short of the roller nip. The plates 5, 7 and 6, 8 are connected by plates 10 to form a displaceable frame. Separator rollers 11, 12 are provided to discharge metallic ports through separate discharge conduits 13, 14. Screening devices may be provided in or below the discharge opening 15 for separating non-crushable coarse material discharged through the slots 9.
Patent GB-793078-A (GB)
Title: Improvements in or relating to adjustable floating-blade reamers
Inventor: HEATON NOEL THOMAS
IPC: B23B29/034
Filed: 1956-03-05
Abstract: 793,078. Reamers. ENGLISH STEEL CORPORATION, Ltd. Oct. 30, 1956 [March 5, 1956], No. 6787/56. Class 83 (3). An adjustable, floating-blade reamer comprises a pair of blades 5 in a slot 4 in the end of a body 1, having projections 14 in a slot 12 in a spigot 11 which is in tongue-and-slot, (10, 9), engagement with a driver 8, the spigot being of smaller diameter than the bore 6 of the body to provide the float and the driver having a helical-groove 16 in its periphery to receive a ball 18 guided in a lengthwise slot 17 in the body, and means 20, 21 for adjusting the ball along the slot 17. Conical-surfaces 22 on the opposed-ends of sleeves 20, 21, engaging screw-threads on the body 1, bear against the projecting ball 18 to clamp or adjust the ball in the slot 17. Adjustment of the ball along the slot 17 rotates the driver 8 and the spigot 11, thus reducing or, as shown diagrammatically in Fig. 10, increasing the diameter of the cutting-edges from the setting of Fig. 9, by changing the angle of the slot 12 and moving the projections in opposite directions. Either or both sleeves 20, 21 may indicate their setting, as by graduations 27, and are formed with a spigot 25 and a recess 24 to enclose the ball 18. The projections 14 have shanks 13 located in plain bores in the blades, which are retained in the slot by a plate 15. The projections, spigot 11, driver 8 and the ball may be hardened.