baber/WOPTO huggingface dataset:
Patent GB-593241-A (GB)
Title: Improvements in and relating to animal traps
IPC: A01M23/18
Filed: 1945-05-25
Abstract: 593,241. Animal traps. CARPENTER, W. M., and CRAWFORD, J. H. May 25, 1945, No. 13107. [Class 5 (i)] An animal trap housing two spring or gravity-operated end doors 13 and 14, pivoted about the transverse pivots 15, 16 has arms 31 and 32 extending from the doors, the transverse portions of these arms being engaged by a locking arm 28 rigidly connected to the bait holder 25. The bait holder is pivotably suspended about a transverse axis by means of lugs 26 and carries a platform 27 and an upstanding arm 35 projecting through an opening 36 to steady the bait holder when setting the trap. When the bait holder is disturbed the arms 31 and 32 are released and the doors drop. They are held closed by wire loops 21 engaging notches 23.
Patent GB-1534068-A (GB)
Title: Process of making a high melt viscosity block co-polyeste
IPC: C08G63/00
Filed: 1976-03-31
Abstract: 1534068 Preparing polyesters GENERAL ELECTRIC CO 31 March 1976 [1 April 1975] 13125/76 Heading C3R A polyester is prepred by melt blending two different polyalkylene iso/terephthalates each having a melt viscosity of from 500 to 7500 poises and one of the polyesters containing from 0À01 to 5 mole per cent, based on the repeating units of a branching compound, and subjecting the blend to solid phase polymerization at a temperature of 10 to 50 C. below the melting point of the lowest melting polyester until the melt viscosity has increased to at least 10,000 poises. The polyesters used in the examples are polyethylene terephthalate and a polybutylene terephthalate branched with pentacrythritol.
Patent GB-495062-A (GB)
Title: Improvements in the stabilisation of organic esters of cellulose
IPC: C08B3/28
Filed: 1937-05-07
Abstract: A continuous process for the stabilization of organic esters of cellulose consists in continuously extracting the ester with a dry hydrocarbon and/or a monohydric aliphatic alcohol having no appreciable solvent action on the ester, by vaporizing the extracting medium, condensing same, causing the condensate to percolate into the ester, treating the deleterious material extracted from the ester and contained in the condensate with a fixation medium, and re-vaporizing the condensate for re-use. The condensate may be withdrawn siphonically from the ester.  The fixation medium is a non-volatile substance, preferably soluble in the extracting medium, and may be triethanolamine or aniline with a hydrocarbon extracting-medium, or caustic soda or potash with an alcoholic medium.
Patent GB-1293728-A (GB)
Title: Brake structure with manual override
Inventor: JEFFRIES DAN WEBSTER
IPC: F16D65/14
Filed: 1971-05-05
Abstract: 1293728 Slack adjusters D W JEFFRIES and H W NASH 5 May 1971 [18 June 1970] 13149/71 Heading F2E A disc brake having an automatic slack adjuster is manually and mechanically actuated through a crank 60 provided with bifurcated portions 62 carrying a roller 72 that engages the head 74 of a screw 76 threaded into the bore 78 of a piston 36, provision being made to ensure that crank 60 has an adequate stroke despite wear of friction linings, by means of ratchet teeth 128 on the head 74 and a pawl 130. coupled to crank 60 and urged by a spring 136 into engagement with the teeth. A compensating mechanism ensuring proper clearance between the piston and brake disc surrounds the screw and comprises a friction ring assembly that grips the caliper bore 56, a retraction spring R, a stop S, a memory spring M and an 0-ring forming a piston P. The friction ring includes a split ring 138 spring-urged on to the conical exterior of a base-ring 140 to cause the split-ring to engage bore 56 through Belleville washers 142 forming spring R. Upon application of fluid pressure piston 36 moves forward against the force of spring R, the latter becomes coil bound and friction ring assembly F releases and remains stationary as the caliper deflects rearwardly. When deflection is reduced the assembly locks and spring R provides the requisite clearance while spring M allows inward travel of piston 36 without disturbing the adjusted position of assembly F. A mechanical actuating assembly for actuating a pair of disc brakes is provided comprising cables (88), (90), Fig. 1 (not shown), coupled to cranks 60 and connected to a pair of pivoted scissor levers (100), (102). A hand or pedal lever cable is provided for closing the scissors connected to a cable (110) carrying a roller (112) that fits into cam-slots (114), (116) in the levers.
Patent GB-514335-A (GB)
Title: Improvements in or relating to electron multipliers
IPC: H01J43/08
Filed: 1938-05-03
Abstract: 514,335. Electron multipliers. BAIRD TELEVISION, Ltd. (Fernseh Akt.-Ges.). May 3, 1938, No. 13174. [Class 39 (i)] The envelope 1 is divided into two or more portions by at least one partition 5 formed of insulating material which mechanically prevents the passage of electrons or ions and is provided with an aperture through which the main electron stream passes, the aperture being covered by an electron permeable electrode. Effects of-stray electrons and positive ions are eliminated. The partition 5 may be an annular - glass ring sealed to the envelope or an inward bulge formed in the envelope itself. The permeable electrode may be secondary-emitting as well as electrodes 4 (grids or foils). Two partitions are shown, but one may be provided between each secondary-emitting electrode. To facilitate insertion of the electrode system from, say, the right hand end of the envelope, all the electrodes to the left of a partition are made smaller than the aperture in it: as each permeable electrode is made larger than the aperture it covers, the apertures in the partitions increase in diameter from left to right. The cathode 2 may be photo-electric, or thermionic with control grid.
Patent GB-725033-A (GB)
Title: Improvements in electromagnetic oscillating armature driving units
IPC: H02K33/04
Filed: 1953-05-12
Abstract: 725,033. Oscillating machines. BOSCH GES., R. May 12, 1953 [May 13, 1952], No. 13175/53. Class 35. An electromagnetic drive for hair-cutting machines and the like comprises an electromagnet having an E-shaped core having curved pole-shoes on which an elastically mounted armature 14 rolls as the latter oscillates under the action of the electromagnet and of a permanent magnet 24. The armature is mounted on a shaft M through which passes a pivot spindle 35 having two rubber discs 36, 37 at its ends. A leaf spring 26 clipped between the inner wall of the plastic casing 11, 12 and the armature 14 tends to press the latter against the curved track 25 of the pole-shoes while tho helical springs 23, 27 limit the armature oscillations. The armature may be mounted in a bearing spindle 57, Fig. 4 (not shown), which is covered by a rubber tube 56. In a modification, Figs. 5, 6 (not shown), the armature has a notch in which a cylindrical rubber member is inserted which rests in a similar notch of an abutment. Specification 702,374 is referred to.
Patent GB-1425280-A (GB)
Title: Method and apparatus for monitoring the serivce life of a stress bearing member
IPC: G07C3/00
Filed: 1974-03-25
Abstract: 1425280 Monitoring service life of a member B B C BROWN BOVERI & CO Ltd 25 March 1974 [26 March 1973] 13193/74 Heading G1N In apparatus for monitoring the service life of a stress-bearing member, the actual operating time is multiplied by a factor based on the thermal and mechanical stresses to which the member is subjected, to determine the equivalent operating time, the factor being obtained from design curves relating stress and temperature for different values of service life. As shown Figs. 2, 4, for determining the equivalent operating time of a heated rod, the temperature # at the surface 4 and the temperature # + # # at a point 5 along a radius are measured by thermocouples 4', 5'. The surface temperature signal # is fed to a function generator 9 relating temperature and stress for a required service life, giving the steady-state stress corresponding to this temperature for the required service life. The temperature difference signal ##, representing additional thermal stress, is combined at 8 with mechanical stress signals, e.g. pressure, centrifugal forces, &c., to give an actual stress signal which is compared at 13 with the steady-state stress. The difference # o is fed to a pulse generator 10 whose output is normally one pulse per hour and is counted at 11 to determine the used part of the service life of the member. The difference signal ## increases the pulse rate so that the indicated operating time takes into account the additional thermal and mechanical stresses.
Patent GB-1021147-A (GB)
Title: Divided base four-layer semiconductor device
IPC: H01L29/423
Filed: 1963-04-03
Abstract: 1,021,147. Semi-conductor devices. TEXAS INSTRUMENTS Inc. April 3, 1963 [Nov. 13, 1962], No. 13230/63. Heading H1K. A four-layer semi-conductor device comprises first and second zones of opposite conductivity types, a plurality of mutually spaced third zones, contiguous with, and of opposite conductivity type to, the second zone, and a plurality of fourth zones each contiguous with one of, and of opposite conductivity type to, the third zones. Ohmic connections are made to each of the third zones and to the first zone and a common ohmic connection is made to the plurality of fourth zones. In one embodiment the first, second and third zones 12, 10, 11, Fig. 1 (not shown), are prepared of P-, N- and P-type material respectively and the fourth layer 13, of N-type material, is formed to cover part only of the surface of the third layer 11. The surface is then etched to provide a channel 14 which extends completely through the third and fourth layers so as to divide each of these two layers into two separate halves. The N-type emitter zones 13, 13a are then bridged by a contact 21, and contacts 20, 22, 23 are provided. By applying a suitable bias to connections 21, 23, to influence the total collector current it can be arranged that a control bias applied across connections 21, 22 will provide a current gain, through the collector 12, which is either less than or greater than unity and thus a relatively large current through connections 21, 20 can be switched on or off by a comparatively small control current.
Patent GB-643824-A (GB)
Title: Recovery of fluosulphonic acid
IPC: C01B17/45
Filed: 1948-05-14
Abstract: Fluosulphonic acid is recovered from spent acid comprising fluosulphonic acid, sulphuric acid and hydrogen fluoride, by admixing sulphur trioxide with the spent acid, distilling the mixture and recovering fluosulphonic acid as distillate.  The addition of sulphur trioxide, in gaseous or liquid form or in a carrier such as sulphuric acid and preferably in amount at least equivalent to the hydrogen fluoride, may be accompanied by agitation and, if necessary, cooling. The distillation which may be effected at a pressure not exceeding, for example, 30 mms. of mercury, may result in a first fraction of non-condensable gas, a second fraction of fluosulphonic acid and a residual non-volatile fraction.  The process, which may be continuous, may be applied to the spent acid from making D.D.T. with fluosulphonic acid as the condensing agent.  The apparatus used is made of corrosion resistant material, e.g. aluminium, aluminium alloys or stainless steel.
Patent GB-704787-A (GB)
Title: Improvements relating to change-speed transmissions for automotive vehicles
IPC: F16H47/08
Filed: 1951-06-05
Abstract: 704,787. External band brakes. BORGWARNER CORPORATION. June 5, 1931 [June 5, 1950], No. 13294/51. Class 103(1) [Also in Groups XXIV and XXIX] The band 90, Fig. 5, of a brake 33, which provides reaction for intermediate speed in a planetary change-speed gear (see Group XXIV), has a fixed abutment-anchor at one end 92, and is actuated at its other end through a strut and adjustable lever 94 by oil-pressure supplied to a space 102 to act on the left face of a piston 98 secured to a stem acting on the lever 94. A coil-spring 99 opposes the engaging pressure, and for some gearshifts the brake is disengaged by supplying linepressure to a space 101 on the right face of the piston, whilst maintaining equal engaging pressure in the left space 102. For other shifts the brake is released by exhausting the engaging-space 102. The band 90 is self-tightening in the direction of normal torque-reaction (arrow A) for forward drive. The band 104, Fig. 4, of a second brake 34 for low-speed and reverse, has an adjustable anchor-strut 108 at one end, and is actuated at its other end through a strut and lever 111 by a spring- released piston 113. This band is self-tightening in the direction C of torque-reaction applied in reverse, but not in that, B, in low speed. Servo application pressures are controlled variably in accordance with load and speed conditions by a complex valve-system in the 'change-speed control (see Group XXIV).
Patent GB-132981-A (GB)
IPC: F02M25/022
Abstract: 132,981. Walford, E. W., (Holley, G. M.). March 5, 1919. Spray carburettors. - In a carburettor such as described in Specification 128,525, cornprising an atomizing tube D rotatable from a distance through a universal joint D" and having fuel inlet ports such as D<9> and an inlet D<2> for air which passes from end to end of the tube, an additional port D<8> is provided for the supply of water to prevent detonation, preignition, &c. in the engine cylinder. Two fuel ports D<9>, D<12>, Fig. 4, are provided, one of which is in the same angular position as the water port D<8>, and the other in a different angular position. Thus, by rotating the tube either fuel alone or fuel and water may be admitted to mix with the air passing through the tube D. The tube is held in position by a ball D<6> entering depressions D<7>. The resulting rich mixture leaving at D<10> passes through a vaporizing coil to a mixing chamber where it is diluted with a further supply of air admitted past hand and suction controlled valves as described in the above-mentioned Specification.
Patent GB-133138-A (GB)
IPC: F16K3/08
Abstract: 133,138. Brown & Barlow, and Brown, C. Sept. 30, 1918. Rotary disk valves.-A rotary disk valve, particularly applicable for use in apparatus for measuring the flow of liquids, of the kind described in Specification 118,949, comprises a pair of disks a, b eccentrically mounted with respect to the passageway c. The fixed disk is carried by the inlet branch, which is fitted with an air valve g, as described in the above-mentioned Specification, while the movable disk is formed integrally with the outlet nozzle d. Stops are formed on the peripheries of the disks. In a modified form, the seat is provided with inlet and outlet ports, and is adapted to co-operate with a valve disk having corresponding ports joined by a pipe connexion. Specification 121,015, [Class 69 (i), Hydraulic apparatus &c.], also is referred to.
Patent GB-133336-A (GB)
IPC: C22B34/12
Abstract: Ilmenite is treated with sulphuric acid, with the employment of open steam, so that the strength and concentration of the solution can be regulated.  The ilmenite may be greatly in excess, the undissolved residue being employed again.  The solutions may be employed as such, or may be reduced by means of metallic iron, until the titanium dioxide is reduced to sesquioxide.  The hydrated ferrous sulphate is separated by crystallization.  A proportion of other suitable acids, for example hydrochloric, hydrofluoric, or oxalic, may be added to the titanium sulphate; or salts may be obtained therefrom by double decomposition with suitable salts.
Patent GB-133631-A (GB)
IPC: A47B81/06
Abstract: 133,631. Fisher, P. J. May 14, 1919. Cabinets.-In a cabinet for holding gramophone records, the records are held in place and separated from one another by series of cords or wires 7 connecting cross-bars 2, 3. The cords or wires 7 may be secured to the bars 2, 3 in different ways, and the two bars 2 may be replaced by a single bar that is curved in cross-section and has the cords or wires secured to its longitudinal edges. All the cords &c. may be formed from a single length of material.
Patent GB-478639-A (GB)
Title: Process for treating animal skins and hides
IPC: C14C1/02
Filed: 1936-05-12
Abstract: Hides and skins are subjected for preserving purposes to the action of a mixture of an emulsifying agent with hydrocarbons, their chloro, alcoholic, or monovalent alcoholic ester derivatives having an evaporation velocity not more than one-fiftieth that of acetone.  The substances must have no tendency to resinify and be inactive to protein substances.  The preparations may be mixed with the usual preservative salt. Suitable substances are higher benzene, naphthene, and terpene hydrocarbons, higher boiling constituents of petroleum, fenchyl alcohol, benzyl alcohol, cyclohexanol, terpineol m-dichlorobenzene, chloronaphthalene and perchlorethane. Particular compositions are described comprising: 1, terpinolene, butyl benzene and sodium cetylsulphonate; 2, fenchyl alcohol, petroleum distillate, pentachloroethane, sodium sulpho-ricinoleate; 3, benzyl alcohol, m-dichlorobenzene, sodium diisobutyl-naphthalene sulphonate; 4, cyclo hexanol, naphthene hydrocarbons, sodium naphthenesulphonate.  The hides &c. are placed in an aqueous emulsion of the preparation or may be coated on the flesh side with the preparation or with salt mixed with the preparation.  The treatment is stated to improve the effect of subsequent leather-making processes.  Reference has been directed by the Comptroller to Specification 416,309, [Group VIII].
Patent GB-1037282-A (GB)
Title: Improvements in and relating to colour light signals
IPC: F21S8/00
Filed: 1963-04-04
Abstract: 1,037,282. Light signals. SENDLINGER OPTISCHE GLASWERKE G.m.b.H. April 4, 1963 [May 26, 1962], No. 13461/63. Heading F4R. A colour signal light, especially for traffic control, comprises an incandescent lamp 2, a reflector, a colour filter 17 and a closure member 22, 23 and incorporates one or more of the following means for reducing phantom light (a) a baffle 4 surrounding the base of the lamp; (b) a diffusing screen 29 between the closure member and the colour filter which is preferably inclined backwards from top to bottom; and (c) a hood 30 between the colour filter and the closure member of the diffusing screen, the outer surface of which is light absorbing. In addition a set of radial vanes 13, 15, e.g. three or four equally spaced around the axis, may be provided and these may also serve to support the baffle 4. The baffle may conform to the surface of a cone extending from an opening in the base of the reflector to the filament of the lamp or may be a cylinder parallel to the axis of the reflector. The diffusing screen may consist of a screen covered with a pattern of pyramidal depressions which may be symmetrical or designed to deflect parallel light downwards to a greater extent than upwards. The screen is enclosed in a dished element 21 secured to the front of the filter 17. The bottom of the dish which forms the front of the signal has an upwardly inclined surface 23 and a downwardly inclined surface 22 which deflect sunlight falling on the signal. The centre of the filter 17 carries a hood 30 blackened externally which extends forwards from the filter and performs a similar function to the usual external hood of the signal. It may be supplemented by a backwardly extending ring or part ring on the filter or by a diffusing ring or part ring on the inner surface of the filter. The reflector may be parabolic with an inturned corrugated ring or a ring of part spherical shape at the outer edge.
Patent GB-134769-A (GB)
IPC: F16L19/08
Abstract: 134,769. Burns, J. A. May 7, 1919. Spigot-and-socket joints with packing at base of socket.-A tube, rod, or the like is held against endlong movement by a ring of struts inclined to its axis and frictionally engaging its surface. In the application to a pipe joint shown in the drawings a cone A is radially divided and formed with notches G which clear the retaining projections F on the union nut B when the cone is inserted in the nut. When the nut is screwed up the struts into which the cone is divided force the pipe C against packing on the face of the pipe D.
Patent GB-878483-A (GB)
Title: Process for the production of stabilised dolomite
IPC: C04B35/03
Filed: 1960-04-14
Abstract: Stabilised dolomite in the form of powder or in massive form is produced by treating the free lime present in the dolomite with sufficient silica or silica containing material such as sand, olivine or serpentine to form a lime excess of 0,3% to 5% based on the weight of the dolomite above that required to form tricalcium silicate (3 CaO) SiO2.  The stabilised dolomite powder can be fired or hydraulically set with water.
Patent GB-733629-A (GB)
Title: Improvements in apparatus for applying liquids to the soil
Inventor: KLEBOE JOHN ANTHONY
IPC: A01C23/02
Filed: 1952-05-28
Abstract: 733,629. Subsoil injection of fertilizer. WARD, Ltd., T. W. Aug. 21, 1953 [May 28, 1952; Jan. 22, 1953; April 20, 1953], Nos. 13545/52, 1884/53 and 10801/53. Class 6 (1). An apparatus for the subsoil injection of fertilizer comprises a wheeled carriage provided. with a sub-frame including a transverse toolbar 10 carrying a series of spaced hollow coulters 30, the front of the sub-frame being connected to the carriage about a pivot 12 which permits swinging of the sub-frame up and down and sideways and also permits rotation about a longitudinal axis, the sub-frame being connected by chains 17 to levers 16 on the carriage for raising and lowering the sub-frame. The coulters are connected by flexible pipes 31 to nozzles 32 on a tank 34, which is dismantable and has a level-indicator comprising a diaphragm 49 through which a float-arm 50 passes, the outer end moving over an arcuate scale 53. The filler cap 40 incorporates a strainer. The main frame comprises beams 1 rearwardly diverging from a draught-connection 2 and terminating in two upward extensions 13 which support a rockshaft 15 integral with the levers 16, the rock-shaft being rotatable by a hydraulic ram 21 supplied with fluid from the towing tractor (not shown), through a pipe 23; the ram is connected to an arm 18 on the rock-shaft by a coupling member 19. which is attached to a valve 35 controlling the fluid-supply to the coulters, so that raising of the latter automatically interrupts the supply. The main frame rests on a tubular axle 3 within which are adjustable half-shafts 6 carrying rubber-tyred land-wheels 4. The tool-bar 10 is carried by beams 9 diverging from the pivot 12, the coulters being adjustable along the bar and vertically through clamps 28. According to the second Provisional Specification, the transverse bar is suspended from the main frame by parallel links and is raised by a hand-lever.