baber/WOPTO huggingface dataset:
Patent GB-1429736-A (GB)
Title: Device connecting a cutter unit to a frame of a powered lawnmower
IPC: A01D34/82
Filed: 1974-01-19
Abstract: 1429736 Mounting cutters on mowers FLYMO SA 19 Jan 1974 02637/74 Heading A1F A telescopically adjustable device for mounting cutters on a mower frame comprises a first rod part 7, rigidly secured to mower frame 1 and a second tubular part 6 rigidly secured to the cutting assembly 2.  Expansion of the telescopic member is limited by a belt 10 located about pulleys 3 and 4 on the cutter shafts and about a driven pulley 11 mounted on the frame 1. Contraction of the telescopic member is limited by a locking latch 13, having an actuating handle 15, and mounted for eccentric pivotal movement in a bracket fixed to the tubular member 6 so as to provide a first locking position (shown in the drawings) in which the eccentric 13 abuts a spacer 14 fixed onto the rod member 7 by nuts 16 and 17; and a second free position allowing a degree of contraction sufficient to permit disengagement of the belt 10 from pulleys 3 and 4, and subsequent removal of the cutter assembly by disengaging the parts 6 and 7 of the telescopic mounting.  The tension of belt 10, in the locked position may be adjusted by varying the location of nuts 16 and 17 along a threaded extension of the rod part 7. A pin 8 is provided in the tubular part 6 which is located in a flute 9, in the rod part 7, having a width slightly in excess of the diameter of the pin 8 to allow a limited degree of rotational movement of the cutter assembly, about the axis of the telescopic member.
Patent GB-773694-A (GB)
Title: Improvements in or relating to electrostatic precipitators
IPC: B03C3/76
Filed: 1955-01-28
Abstract: 773,694. Electrostatic precipitation. RESEARCH CORPORATION. Jan. 28, 1955 [Feb. 16, 1954], No. 2649/55. Class 39(1). In a precipitator for treating gases which form a combustible mixture with oxygen, such as those from ferro-manganese blast furnaces, the devices for vibrating the high-tension electrodes are operated pneumatically by a compressed gas which does not contain uncombined oxygen so that the operating gas when discharged as exhaust into the treated gas cannot form a combustible mixture with it. Suitable operating gases are carbon dioxide, nitrogen, natural gas or steam ; or the cleaned gas from the precipitator may be used.
Patent GB-555178-A (GB)
Title: Improvements in or relating to polyphase induction motors
IPC: H02K17/04
Filed: 1942-03-04
Abstract: 555,178. Induction motors. FERRANTI, Ltd., and NORRIS, E. D. T. March 4, 1942, No. 2844. [Class 35] [Also in Group XXXVII] A disc type eddy-current motor has at least two driving elements each comprising two electromagnets, the magnets of one element being supplied in quadrature from a polyphase supply to produce a driving torque, and the magnets of the other element being supplied alternatively from a polyphase or from a single-phase source to exert driving and braking torques respectively. By using four elements and connecting up to three elements in a braking relation, a range of nine speeds between 12.5 and 87.5 per cent of no-load speed can be obtained. Each element may act on a separate rotor.
Patent GB-707183-A (GB)
Title: Wheel mountings
IPC: B60B37/10
Filed: 1952-02-04
Abstract: 707,183. Vehicle wheels. FORDHAM PRESSINGS, Ltd., and PARKER, J. F. Jan. 28, 1953 [Feb. 4, 1952], No. 2855/52. Class 144(1) A trolley or like wheel is detachably mounted on a fixed axle or journal 10 having a fixed inner retaining collar 11 by a U-shaped spring 14 housed in an axial bore 13 in the axle end, the spring having a lateral abutment 16 to project resiliently through a transverse hole 15 in the axle end and engage the outer end face of the wheel hub. As shown the abutment 16 is formed as an inverted V-shaped kink in a U-shaped leaf spring 14 to provide for a cam-action depression of the abutment on manual mounting or removal of the wheel. In an alternative construction, both limbs of the U-shaped spring may have an abutment 16 to project through diametrically opposed transverse holes.
Patent GB-533343-A (GB)
Title: Improvements in and relating to rock drills
IPC: E21B17/04
Filed: 1939-10-31
Abstract: 533,343. Rock drills. CRAIG, E. Oct. 31, 1939, No. 29037. [Class 124] In a rock drill the bit 3 is formed with a socket 4 to receive the end of a straight-sided shank 1, and has detents 5 adapted to be forced laterally into recesses 2 in the side faces of the shank. The detents may form parts of the sides of the bit which are extended past the recesses 2. The bit may be removed by means of a shoulder 9 or its edge 9<SP>1</SP>. The cutters 8 of the bit decrease in length in the direction of rotation. They each have a cutting angle of about 32 degrees, and the bottom is concaved as at 8<SP>1</SP>.
Patent GB-1103522-A (GB)
Title: Method of producing a continuous wall of piles
IPC: E02D5/18
Filed: 1966-01-21
Abstract: 1,103,522. Pile walls. G. WEY, 21, Jan., 1966, No. 2942/66. Heading E1H. A continuous wall of cast-in-situ piles is constructed by drilling a first row of holes 18 such that the distance between adjacent hole centres is less than twice the diameter of the holes removable filling members 19 are lowered into the holes 18 and a second row of holes 20 is bored between the holes 18 of the first row so that in the final arrangement of bore holes the distance between the centres of two adjacent holes is less than the diameter of each hole. The filling members 19 are tubular and have a profile which is shaped according to the diameter of the overlapping holes 20 which are to be drilled and they can be provided with an anchorage (21), Fig. 6 (not shown). The holes 20 and the filling members 19 are filled with coarse aggregates 22 after which the filling members are removed. The voids in the aggregate are filled with grout injected through pipes 23. Other forms of filling member consist of flexible tubes partially enclosed by rigid curved plates and for deep bores units of filling members can be placed one above the other and releasably connected by junctions. In a further method a previously bored hole is filled with stones the voids of which are filled with a material which can readily be cut when boring the subsequent overlapping hole.
Patent GB-1114095-A (GB)
Title: Improvements in or relating to opposed axial piston type hydraulic pumps or motors
Inventor: THOMA OSWALD H
IPC: F04B1/22
Filed: 1966-01-22
Abstract: 1,114,095. Axial piston pumps and motors. UNIPATA.G. Jan. 20, 1967 [Jan.22, 1966], No. 2998/66. Heading F1A. In an axial opposed piston pump or motor the cylinders are formed by separate sleeves 23 located in bores in the rotor 17,18,19. The sleeves are located by spring biased members 54 in the rotor part 19. The face valve 38 is supported by pipes (33, 34, 35, 36), Fig. 3 (not shown), located in fixed end plate 11 and a spigot 42 engaging a recess in the rotor part 19. In a further embodiment, Fig. 4 (not shown), a pintle valve (60) is mounted in a recess in the intermediate part (61) of the rotor. Radial balancing of the pintle (60) is provided by arcuate grooves (66, 67) in its external surface which are connected to the inlet and outlet of the pintle valve. The cam members 12,13 may be fixed or one or both may be angularly adjustable.
Patent GB-1535280-A (GB)
Title: Container for impression material for dental use
IPC: A61C9/00
Filed: 1976-01-27
Abstract: 1535280 Two compartment package; twin compartment container AB CLAASEN 27 Jan 1976 [29 Jan 1975 19 June 1975] 2998/76 Headings B8C and B8K [Also in Division B1] In a two compartment package, Fig. 1 or Fig. 4, a portion of a flexible container passes through a slot 5 or 13 in a removable clamping member and in a lay-flat condition is held in a zig-zag configuration by the clamping member to separate the compartments. As shown in Fig. 1, the clamping member is formed of flexible sheet material and has a substantially S-shaped section. In the other embodiment, Fig. 4, the clamping member comprises two relatively rotatable, concentric parts 11 and 12 provided with slots 13 and 29 through which the container passes. The parts 11, 12 are held in their clamping position by snap engaging projections 14 and recesses 15. The two part clamping member may be utilized, after admixture of the compartment contents, e.g. sterile water and powdered impression material for dental use, in attaching the container to a vibrator or a container support (17), Fig. 7 (not shown), which can be attached to a vibrator.
Patent GB-685774-A (GB)
Title: Improvements in or relating to electric converting systems
IPC: H02J1/12
Filed: 1950-02-06
Abstract: 685,774. Converting; automatic current control systems. GENERAL ELECTRIC CO., Ltd., and DALE, S. H. Feb. 6, 1951 [Feb. 6, 1950; Aug. 18, 1950], Nos. 3010/50 and 20538/50. Classes 38 (ii) and 38 (iv). A converter arrangement including at least one gas or vapour arc converter and a direct current machine or rotary converter, has each converter or machine over-compounded and dependent upon the direct current in the converter, the compounding means for each converter and machine comprising an element carrying the direct current therein, the resistances of these elements being such that an equal voltage is developed across each element when the converters and machines are sharing the load in the desired proportions, one end of each element forming a common connection of the direct current supply, the other ends being joined to an equalizing connection. A motor generator set 10, 11 is arranged in parallel with two gas arc rectifiers 25, 25a to supply a common direct current load 15, 22. The motor generator is provided with a series compounding field winding 19 and the arc rectifiers with shunts 34, 34a and it is desirable that the converters should have similar voltage/current characteristics. Further, if the converters are not of equal load capacity the characteristics should be similar when referred to the full load current, or alternatively to the normal operating current, of the converter. The resistances of the series field winding 19, and the shunts 34, 34a are chosen so that when the desired load currents are flowing in each converter the voltage developed across each element 19, 34, 34a are equal. The outputs of the converters are controlled in dependence upon the currents in these elements, that of the motor generator in normal fashion by the series field and those of the converters 25, 25a by feeding the voltage across the shunts to any known form of phase-shifting arrangements 38, 38a which are arranged to control the grids 28, 28a of the converters. The upper ends of the elements 19, 34, 34a are connected to an equalizer connection 40 in accordance with known practice. The characteristics of the converters may differ by say +10 per cent without unduly affecting the parallel operation of the units.
Patent GB-1100552-A (GB)
Title: Improvements in or relating to the manufacture of plastics or dough-like comestible products
Inventor: BURTON THOMAS GERALD
IPC: A21C7/04
Filed: 1964-01-22
Abstract: 1,100,552. Dividing and moulding dough. BAKER PERKINS Ltd. 22 Jan., 1965 [22 Jan., 1964], No. 3012/65. Divided out of 1,100,551. Heading B5A. The description is substantially that of the parent Specification 1,100,551, but the claims differ and relate to the adjustability of the time intervals between the moulding operations.
Patent GB-571335-A (GB)
Title: A process for the production of adhesives, sizes, thickeners, and finishing agents
IPC: C08L3/00
Filed: 1943-02-25
Abstract: Adhesives, sizes, thickeners and finishing agents are prepared by mixing vetch or cockle seeds, in comminuted form or as a meal, with a little cold water to form a paste, further diluting with cold water and liquefying to the extent required by heating with or without the use of high pressure or of an alkali.  Seed or meal of other field plants, such as chickling-vetch, mustard and cow wheat, may be included.  In examples, an adhesive is made by mixing 150 grams of vetch or cockle meal with 850 c.cs. water and warming to 80-85 DEG C. until it gelatinises.  By working under pressure, e.g. 2 to 3 atmospheres during 15 to 20 mins., the adhesive obtained does not thicken on cooling.  A size for cotton yarn is prepared in a similar manner from 10 kgs. of meal with 100 litres water and 1 per cent of the sodium salt of p-toluene sulphochloramide may be added.  100-200 grams of meal are boiled with 800-900 grams water for a short time to produce a thickener, which may be diluted with water, to produce a finishing agent. Specification 21755/04, [Class 121], is referred to.
Patent GB-982451-A (GB)
Title: Improved puncture sealing material
IPC: B29C73/18
Filed: 1964-01-24
Abstract: 982,451. Puncture repair materials. APASEAL Ltd. Jan. 24, 1964 [June 27, 1963], No. 3140/64. Heading B7C. Puncture sealing material comprises a sleeve which is loosely knitted from a strand 10 including a plurality of hair-like threads 13 substantially parallel with a monofilament 14, the sleeve being filled with and completely embedded in a homogeneous mass of substantially air-impervious, permanently distortable material. The threads 13 are provided by two plies of nylon yarn each comprising 68 threads of nylon filament. The material used to fill and coat the sleeve may be a polysulphide polymer, neoprene or polyurethane. This material penetrates the minute interstices between the individual threads of the strand 10 to provide a more intimate anchorage of the filling and coating material with the sleeve.
Patent GB-576780-A (GB)
Title: Improvements in or relating to reactance control circuits
IPC: H03J7/04
Filed: 1944-02-21
Abstract: 576,780. Tone controlling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 21, 1944, No. 3174. Convention date, Feb. 25, 1943. [Class 40 (iv)] [Also in Groups XXXV and XL] An arrangement for producing a variable reactive impedance comprises a fixed reactive member Xc in series with a member of resistive impedance R1 which is shunted with the cathode impedance of a thermionic valve 3. The effective reactance at the input terminals 1, 1<1> of the arrangement is varied by varying the potential of the grid 5. The impedance R1 may comprise a resistance or a resonant paralleltuned circuit (Fig. 3, not shown). The anode 8 and grid 5 of the valve 3 may be earthed for the operating frequency by means of condensers 5<1>, 8<1>. The arrangement may be employed for tone control in audio transmission systems. Specification 471,738, [Group XL], is referred to.
Patent GB-134453-A (GB)
Title: Improvements in Devices for Controlling the Supply of Air for Combustion to Internal Combustion Engines.
Inventor: LINK ROLLS PERCIVAL
IPC: F02M1/00
Filed: 1919-02-10
Abstract: 134,453. Link, R. P. Feb. 10, 1919. Closure members, piston.-A valve for admitting auxiliary air to the induction pipes of internal-combustion engines comprises a casing a with short cylindrical portion b in which slides a suction-actuated piston c in the surface of which are formed helical grooves d which are progressively shallower from the upper to the lower end of the piston. A flange f on the valve engages a flange g on a tube e which slides over a tube i screwed into the cap j. A plate o with orifices n<1> forms a hit-and-miss valve with the holes n in the cap j. The tube i is slotted to receive lugs on a nut l which is adjusted to vary the compression in the valve-loading spring h by a screw m the head p of which holds the plate o in position. An inspection aperture t may be formed in the casing a and covered by a glass tube u secured by washers u<1>, u<2>. The cap j and valve can be removed without affecting any adjustment. The casing is supported by lugs a<1>.
Patent GB-840504-A (GB)
Title: Process and apparatus for production of carbon black
IPC: F23D14/00
Filed: 1957-01-30
Abstract: <PICT:0840504/III/1> A furnace, for the production of carbon black by the decomposition of a substantially linear stream of make hydrocarbon in a surrounding spiral stream of hot combustion gases, comprises in axial alignment a substantially cylindrical first reaction zone 21 which has a diameter greater than its length, a Venturi choke 36 of which the inlet and outlet have substantially the same diameter, the diameter of each being smaller than that of the first zone, and a substantially cylindrical second reaction zone 37 which forms a continuation of the Venturi choke and which has a length greater than its diameter, the minimum crosssectional area of the Venturi being 50-80% of that of the second zone and the length of the Venturi being 50-200% of the diameter of the second zone.  The Venturi choke may be tapered outwards on the inlet side from a point at which the cross-sectional area is substantially that of said second zone to merge with the outlet wall of said first zone forming a curved surface having a radius of curvature of 0.05-0.5 times the radius of the second zone.  The throat of the Venturi throat may be streamlined forming a curved surface having a radius of curvature of at least 0.2 times the radius of the second zone. A small quantity of cooling gas, e.g. air, hydrogen, carbon monoxide, carbon dioxide, methane, or a mixture of two or more of these gases, may be passed around the make hydrocarbon injection pipe 22 through a pipe 23. Pipe 22 may terminate in a nozzle (Figs. 7 and 8, not shown) having a plurality of orifices inclined from the axis by an angle of 10-50 degrees, preferably 15-45 degrees.  The hot combustion gases may emerge from a pair of burners 29 comprising a closed ended hydrocarbon fuel pipe having a plurality of peripheral openings surrounded by a pipe for the supply of an oxygen-containing gas (Fig. 3, not shown).  In some cases the supply of fuel may be eliminated. The make and fuel hydrocarbons may be as gas e.g. methane, ethane, propane, butane, or a mixture of two or more of these gases, or a liquid, e.g. a gas oil which is 80% vapour at 775 DEG  F.  The oxygen-containing gas may be air, oxygen-enriched air, or air diluted with combustion product gas.  All or a portion of the make hydrocarbon, fuel hydrocarbon, and oxygen-containing gas may be preheated (Fig. 4, not shown).  The carbon black produced may be quenched by spraying with water from nozzles 44 or may be cooled slowly by indirect heat exchange with the atmosphere through the walls of the discharge conduit.  Tables are given specifying runs using liquid hydrocarbon which is 70% vaporized at 770 DEG  C. as make hydrocarbon, natural gas as fuel hydrocarbon, and air as oxygen-containing gas, and the properties of the resulting carbon black.
Patent GB-310912-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B60T13/36
Filed: 1928-02-02
Abstract: 310,912. Winter, H. J., and Westinghouse Brake & Saxby Signal Co., Ltd. Feb. 2, 1928. Fluid-pressure. - Fluid-pressure braking apparatus of the combined automatic and straight type comprising light and load brake cylinders is provided with a valve device adapted under load conditions, both in automatic and Straight application, to control the supply of fluid under pressure to the brake cylinders so that the stroke of the light cylinder is rapidly effected and substantially completed before fluid is supplied to the load cylinder, and when the brakes are released the venting of fluid from the load cylinder is completed first. In automatic application the fluid supplied from the triple valve 28 moves a check valve 26 in the valve device to close the straight air pipe 29 and passes through ports 31 to a chamber 15 and passages 16, recess 18 in a piston valve 4, passages 21, 22 to the light cylinder 20, also through a restricted passage 24 to this cylinder, and the slack in the brake rigging is taken up and a braking effort applied. When the pressure in the cylinder 20 and chamber 15 has obtained a predetermined value the piston 4 is raised against the pressure of a spring 8 closing the communication of the load cylinder 14 with the atmosphere through a port 6 and supplying it with fluid under pressure by a restricted port 23. Communication between the chamber 15 and the cylinder 20 through the recess 18 is out off by the upward movement of the piston 4, but the supply continues through the port 24. Fluid is released from the brake cylinders through ports 23, 24 and the triple valve until a predetermined reduction in the pressure in the cylinder 14, when the piston 4 returns to the lower position and the cylinder 4 is vented direct to the atmosphere through a port 6 and the cylinder 20 is vented through the recess 18, but not so rapidly as the cylinder 14, so that the venting of this latter is completed first. When straight air is supplied through pipe 30, 29 the check valve 26 is moved to close the pipe 27 from the triple valve and the supply and release of fluid to and from the brake cylinders takes place through the same passages as in the automatic application. The brake cylinder 14 may be rendered inoperative when the vehicle is empty by means of a cock 37 which connects it to the atmosphere.
Patent GB-352004-A (GB)
Title: Improvements in the manufacture and production of chromiferous dyestuffs
IPC: C09B45/16
Filed: 1930-01-31
Abstract: Azo dyes, soluble chromium compounds of.-Azo dyes containing chromium, and giving full uniform brown or red dyeings, fast to light, on leather, are obtained by treating the monoazo dyestuffs from diazotized aminosulphosalicylic acids and resorcinol with compounds of trivalent chromium.  In examples the dyestuffs p - aminosulphosalicylic acid (OH : COOH : NH2 : SO3H = I : 2 : 4 : 6) --> resorcinol and o-aminosulphosalicylic acid (OH : COOH : NH2 : SO3H = 1 : 2 : 6 : 4) --> resorcino are heated at 80 DEG -100 DEG  C. for 1 to 2 hours with an aqueous solution containing chromium hydrate paste and formic acid; the products give full brown and red shades respectively on leather. Specifications 26460/12, 104,045 and 116,535, [all in Class 2 (iii), Dyes &c.], are referred to. o-Aminosulphosalicylic acid (OH : COOH : NH2 : SO3H = 1 : 2 : 6 : 4) is obtained by reduction of the product of nitration of the corresponding sulphosalicylic acid.  Reference has been directed by the Comptroller to Specification 26460/12.
Patent GB-1039566-A (GB)
Title: Semi-conductor device
Inventor: WILKINSON ERNEST LINCOLN GEORG
IPC: H01L21/00
Filed: 1964-01-27
Abstract: 1,039,566. Controlled rectifiers. ENGLISH ELECTRIC CO. Ltd. Feb. 12, 1965 [Jan. 27, 1964], No. 3364/64. Heading H1K. A controlled rectifier is made by mounting an NPN body in a jig between conductive endpieces and heating to alloy the parts together. Alloying material disposed between the body and end pieces is selected to provide ohmic and PN contacts respectively to the outer regions of the body. In the embodiment, Fig. 3, in which the annular control electrode and copper terminals are attached in the same process the NPN body, jet etched to the form shown, is assembled between molybdenum end-pieces. The alloying material A is a silver-lead-antimony alloy which may also include silicon, the material B for attaching the terminals is coppersilver alloy and the PN junction forming material aluminium. The temperature of the assembly is raised to 800‹ C., held there, raised further to 880‹ C. and then held there before the final oooling.