baber/WOPTO huggingface dataset:
Patent GB-523941-A (GB)
Title: De-icing device for airscrews
IPC: B64D15/16
Filed: 1939-01-18
Abstract: 523,941. Screw propellers. VEREINIGTE DEUTSCHE METALLWERKE AKT.-GES. Jan. 18, 1939, No. 1816. Convention date, Jan. 22, 1938. [Class 114] In a de-icing device for airscrews, of the kind wherein liquid for preventing deposition of ice is fed from an annular channel to the outer surface of the blades, the intermediate pipes from the channel to the blades are carried by the spinner covering the hub. The intermediate section b of the spinner surrounding the hub of the propeller has supported upon it pipes g with couplings i. Externally the couplings i carry the pipes k which lead directly to the blade surfaces. Internally the pipes g are fitted with flared openings adapted to register with the tapered outlet pipes f of the annular channel c which is itself fed by a pipe d. Instead of piping, gutters or open channels may be used to guide the fluid which is retained therein by centrifugal force when the screw propeller is rotating.
Patent GB-917308-A (GB)
Title: Improvements in fastening means for the removable end covers of drum containers
Inventor: NUGENT GEORGE WALTER
IPC: B65D8/18
Filed: 1961-01-17
Abstract: 917,308. Releasable fastenings. NORMAN Ltd. Aug. 2, 1961 [Jan. 17, 1961], No. 1874/61. Class 44. [Also in Group XVII] A releasable fastening for the removable end cover 7 of a drum container 1 comprises strips 11, 12 of manually flexible but relatively stiff material, e.g. annealed iron, the ends of which pass through slots 6 and are then bent over as shown. Instead of the strips and cover being secured together by a rivet 10, the strips may be separate from the cover, and need not intersect ; or they may be replaced by individual shorter tongues secured to the periphery of the cover.
Patent GB-1488211-A (GB)
Title: Monolithic semiconductor structure and hybrid circuit incorporating the same
IPC: H01L21/822
Filed: 1975-01-16
Abstract: 1488211 Rectifying GENERAL ELECTRIC CO 16 Jan 1975 [18 Jan 1974] 1877/75 Heading H2F [Also in Division H1] A hybrid full-wave rectifier for use at 50 kHz, the circuit of which is shown in Fig. 1, is characterized by the use as rectifying elements of NPN transistors Q 1 , Q 2  operated in the inverse mode and shunted by respective Schottky diodes SBD 1  and SBD 2 . At the start of a half-cycle the relevant Schottky diode conducts on account of its low forward voltage drop and the resulting current in primary P 1  of the ferrite cored transformer 22 acts via secondary S 1  to switch on transistor Q 1 . When the voltage at 12 falls below that at 18 reverse current instantaneously flowing through the transistor acts via windings P 1 , S 1  to rapidly switch off the transistor. The transistors Q 1 , Q 2 , formed in the same silicon wafer as the Schottky diodes, as described in Division H1, are so constructed as to have high inverse gain, and the diodes provided with guard rings.
Patent GB-938037-A (GB)
Title: Improved process and apparatus for the treatment of sludge
Inventor: MALAN HENRY LAWRENCE
IPC: C02F11/06
Filed: 1961-01-17
Abstract: 938,037. Sewage sludge. NORDAC Ltd. April 17, 1962 [Jan. 17, 1961], No. 1886/61. Classes 46 and 111. Sewage sludge is delivered to the upper burner compartment 1 by port 11 and is mixed with material circulating before it passes slowly through the hole 4 in the inverted truncated conical perforated baffle 3 to the lower compartment 2 with base 12 of similar shape to baffle 3. The hot gases from burner 5 give up almost all their heat to the sludge which is kept at about 65‹C. for the time of its passage through the lower compartment before its ultimate discharge as sterilised fertiliser from weir 15 via rising main 13. Examples of submerged combustion heaters 5 are disclosed in Specifications 610,271. and 613,883
Patent GB-387113-A (GB)
Title: Improvements in or relating to silencers for internal combustion engines
IPC: F01N13/20
Filed: 1932-01-22
Abstract: 387,113. Exhaust-silencers. NORTON MOTORS, Ltd. and CARROLL, A., Bracebridge Street, Aston, Birmingham. Jan. 22, 1932, No. 1957. [Class 7 (ii).] The gases enter a Venturi tube f at d, part of the gases escaping through holes l into a chamber b, the remainder passing through the tube to exert an ejector action to withdraw the gases from the chamber b. This action is obtained by the outlet end g of the Venturi being located by ribs i, with some clearance, in a flanged aperture h of a baffle plate j. The gases ultimately escape to atmosphere through a perforated tube n with fishtail m.
Patent GB-1459699-A (GB)
Title: Recovery process using surfactant mixtures
IPC: E21B43/16
Filed: 1975-01-16
Abstract: 1459699 Oil recovery TEXACO DEVELOPMENT CORP 16 Jan 1975 [6 Feb 1974] 1981/75 Heading E1F A method of recovering oil from a subterranean formation comprises injecting into the formation (a) a slug of hydrocarbon solvent containing a mono-unsaturated secondary alcohol, (b) a slug of an aqueous solution containing a water-soluble alkali metal or ammonium inorganic salt and a sulphate salt of a C 8-20  fatty alcohol, and (c) water or brine as a drive agent. The alcohol may be a mono-unsaturated cyclic secondary alcohol, a terpene alcohol or a polyalicyclic alcohol, e.g. cholesterol, and is present in the hydrocarbon solvent in a concentration of 0.1 to 10% by weight. The hydrocarbon solvent may be propane, butane or crude oil and the alkali metal salt may be sodium chloride. The sulphate salt may be sodium dodecylsulphate or sodium tridecylsulphate and is present in the aqueous solution in a concentration of 0.1 to 2% by weight. The alkali metal salt is present in a concentration of 0.1 to 5% by weight.
Patent GB-658662-A (GB)
Title: Improvements in or relating to internal heat-treatment device
IPC: A61B17/22
Filed: 1949-01-25
Abstract: 658,662. Surgical dilators. REICH, W. J.. and NECHTOW, M. J. Jan. 25, 1949, No. 2005. [Class 81(ii)] A device for applying heat to a.body cavity comprises a flexible bag 10, of rubber or similar material, having its interior communicating with an inlet tube 11 and a discharge tube 12 for the passage of fluid through the bag. The outlet tube has higher resistance to fluid flow than the inlet tube, as by being of narrower bore tubing, so that the bag is maintained distended during use. The free end of the inlet tube may have a tapering box to facilitate attachment to a mixing tap.
Patent GB-1336361-A (GB)
Title: Photographic silver halide products and diffusion transfer  processes
IPC: G03C8/48
Filed: 1971-01-15
Abstract: 1336361 Photographic diffusion transfer film unit POLAROID CORP 15 Jan 1971 [19 Jan 1970] 2124/71 Heading G2C A photographic film unit, for forming by diffusion transfer a composite print in which a positive image is formed over a negative image the composite print being viewable without separation of the two images as a positive reflection print, comprises a photo-sensitive laminate comprising a support, a photo-sensitive silver halide emulsion layer, a polymeric image-receiving layer and, between the silver halide emulsion and image-receiving layer, a layer comprising a dispersion of reflecting inorganic pigment having a first mean particle size, which layer transmits incident actinic radiation to expose the photosensitive silver halide emulsion layer and which dispersion upon contact with alkaline processing composition provides a dispersion of the pigment having a second, larger, mean particle size such that the dispersion is effective to mask imageforming material in the silver halide emulsion layer. The pigment may be titanium dioxide. The first particle size may be less than 0À2 microns and the second particle size greater than 0À2 microns. The support may be opaque and the image-receiving layer may be distant from the opaque support and a transparent cover sheet may cover the image-receiving layer or maybe connected to the opaque support and be capable of covering the image-receiving layer. Alternatively the support may be transparent, the silver halide layer may be distant from the transparent support and a second sheet may cover the silver halide layer or may be connected to the transparent support and be capable of covering the silver halide layer. The film unit may contain a rupturable container that contains alkaline processing composition positioned to discharge the composition between the laminate and the second sheet. The processing composition may contain an opacifying agent. Each silver halide emulsion layer may have associated therewith a compound providing a dye image forming material e. g. a dye-developer. The film unit may contain an acidic layer. The film units and processes of Specification 1326035 are disclaimed. Film units and processes in which the present invention is usable are described and claimed in Specification 1336362.
Patent GB-710794-A (GB)
Title: Pulsator for milking machines
IPC: A01J5/12
Filed: 1952-01-25
Abstract: 710,794. Cow-milking machine pulsators. KAISER, E. G. Jan. 25, 1952 [March 23, 1951], No. 2126/52. Class 84 The membrane 1 of a milking machine pulsator is maintained in the rest position shown by the spring 21 so that the valve 3 is opened and the valve 4 is shut. A vacuum is applied to 6a and the pressure in the space 11 above the membrane is thus lowered at a speed controlled by the setting of the valve 14. At the same time suction is applied to the teat-cup through pipe 10a. When the pressure in the space 11 is low enough, the atmospheric pressure in the space 18 overcomes the spring 21 and the valves are actuated to shut off the suction by valve 3 and allow the teat-cup to communicate with the atmosphere through valve 4. The cycle then recommences as air enters space 11.
Patent GB-1068021-A (GB)
Title: Improvements relating to spraying equipment
Inventor: BROTHERS ALBERT EDGAR
IPC: B05B12/14
Filed: 1963-01-17
Abstract: 1,068,021. Coating apparatus. MORPHYRICHARDS Ltd. Jan. 16, 1964 [Jan. 17, 19631, No. 2137/63. Heading B2L. Spraying equipment comprises a spraying head, at least three containers for containing two spraying media and a solvent and means for selectively coupling said lead to said containers. In the arrangement shown 1 is a container filled with a first paint and connected through a stop valve 4, connector 5 and hose 6 to a distributing pipe 7. The latter is connected by tubes 10 to pumps 11, all mechanically coupled and driven by shaft 17, and the pumps discharge via tubes 12 and 14 to spraying heads 13. Paint in container 1 is at atmospheric pressure and when pumps 11 are started and stop valve 4 opened, paint gravitates to pipe 7 and thence via pumps 11 to spraying heads 13. Two additional canisters are provided, one 20 for paint thinners and the other 21 for a second paint and fitted with stop valves 22, 23 respectively. When it is desired to change from one paint to another, valve 4 is closed and tube 6 uncoupled and connected to cannister 20. Valve 22 is then opened to allow thinners to pass through the system until thinners uncontaminated with paint is discharged through spray heads 13. Stop valve 22 is then closed and the tube 6 disconnected from it and connected to stop valve 23 of container 21. Valve 23 is then opened to allow the new paint to flow through the system and force the residue of thinners out of the system until paint of the desired consistency is discharged from sprays 13. The containers may be made air-tight and provided with means to connect them to a compressed air supply 26 to expidite the flow of thinners and the initial flow of new paint, to assist in rapid change over from one paint to the other.
Patent GB-961922-A (GB)
Title: Substituted 1,2,4-dioxazines
IPC: C08K5/35
Filed: 1963-01-17
Abstract: The invention comprises compounds of the formula <FORM:0961922/C1/1> where R in both rings is hydrogen or alkyl of 1-4 carbon atoms, and their preparation by reacting a gas containing molecular oxygen with a compound <FORM:0961922/C1/2> in an organic solvent such as ethanol or chloroform. Specification 936,372 is referred to.
Patent GB-608881-A (GB)
Title: Improvements in or relating to hydraulic relief valves
IPC: F16K17/04
Filed: 1946-01-24
Abstract: 608,881. Relief valves. FAIREY AVIATION CO., Ltd., and CHURN, C. R. Jan. 24, 1946, No. 2391. [Class 135] A hydraulic relief valve has a spring-loaded valve member 17 of which the end opposite to the valve face 19 is formed as a hollow stem 18 slidable in a balancing chamber 13 and of which the other end is formed with a hollow snout 22 constituting a continuation of the bore of the hollow stem and extending away from the low pressure region around the valve seat 15 so as to place the balancing chamber in communication with the highest availablepressure. High pressure from the inlet 11, Fig. 1, acts on the annular area of the valve face 19 outside the valve seat 15 against a spring 21 acting on a flange 20 with gaps 24. When the valve is open, the pressure in the outlet 12 passing through a passage 23 in the stem 18 acts in the balancing chamber 13 to aid the spring in closing the valve. In Fig. 3, the inlet and outlet are reversed and the area of the valve face within the valve seat is larger than the area of cross-section of the balancing chamber.
Patent GB-988025-A (GB)
Title: Electron beam irradiation apparatus
Inventor: MUEL JACQUES
IPC: H01J33/00
Filed: 1963-01-21
Abstract: 988,025. Electron beam apparatus. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 21, 1963 [Jan. 30, 1962; Jan. 11, 1963], No. 2532/63. Heading H1D. A flat electron beam for irradiating materials is focused by at least one pair of permanent or electromagnets disposed on either side of the beam parallel to its major axis and with their polarities oppositely oriented. The edge effects of the magnetic fields produced may also have the effect of diverging the beam as shown. The electron gun comprises a cathode filament, a pair of reflector electrodes diverging away from the filament, pairs of rod-shaped focusing electrodes at increasing positive potentials and a slotted accelerating electrode. In apparatus for irradiating material 120 in strip form, the electron beam emerges through a window structure D<SP>1</SP> which includes an upper block with a slide valve covering a slot, and a lower water-cooled block with a seating 86 for the window proper 84. The end and side walls of the beam chamber A consist of insulating material, e.g. " Araldite " (Registered Trade Mark), and the side walls are shielded by triangular electrodes 93 or, alternatively, by centrally slotted parallel plates distributed along the chamber. The pair of focusing magnets is indicated at 26<SP>1</SP>.
Patent GB-391557-A (GB)
Title: Improvements in and relating to collapsible boxes
IPC: B65D5/36
Filed: 1932-01-28
Abstract: 391,557. Collapsable boxes. MANSFIELDS (NORWICH), Ltd. and FLOWERDAY, W. A., St. Saviour's, Norwich. Jan. 28, 1932, No. 2580. [Class 18.] A collapsable cardboard box, e.g. for cut flowers of the kind comprising two trough-like members fitting one over the other and scored at their sides or ends so that they can be folded flat, has the bottom member, Fig. 2, formed from a rectangular cardboard &c. blank scored longitudinally and transversely at a distance from the edges equal to the depth of the walls and slit along the longitudinal scoring from the edges to the transverse scoring, a scoring 3 being formed from the bottom of each slit at an angle of 45 to the transverse scoring, so that the member can be stapled up in the form shown and collapsed by pushing in the sides. The member is kept erected by means of strips 5 of wood stapled &c. to the sides and resting on vertical wood strips 6, also stapled &c. to the walls, and bevelled wooden stops 7 slanting outwards from the ends and engaging against the inner faces of the strips 5. The upper member, Fig. 1, is analogous to the lower but the parts 5, 6, 7 are omitted and a strengthening strip 12 is provided which rests on or accommodates the edges of the strips 5 and is arranged above the pieces 6. Aligning ventilation apertures 13 may be employed.
Patent GB-538031-A (GB)
Title: Electric measuring instrument with suppressed zero
IPC: G01R15/00
Filed: 1940-02-10
Abstract: 538,031. Testing and calibrating instruments; current and voltage measurements. STEGHART, F. L. Feb. 10, 1940, No. 2600. [Class 37] An instrument having a suppressed zero is provided with calibrating means. Fig. 1 shows a moving-coil instrument for measuring the voltage of a thermo-couple 1 after amplification in a valve amplifier 4. The moving coil 5 carries a pointer 16 which is held against a stop 17 by the control spring 7 until the current reaches a value sufficient to overcome the torque due to the spring. By moving a switch 3 into the position shown a standard cell 2 is connected to the coil 5 through a smaller stage of amplification in the amplifier 4 and produces an output current sufficient to bring the pointer to a calibration mark on the scale. The spring 7 is then adjusted by a handle 14 until the pointer is brought to this mark. The amplifier may have different amplification stages which may be changed by a switch to give different ranges of temperature readings. Fig. 2 shows an instrument in which the zero is suppressed electrically by means of an opposing voltage due to a current flowing in a resistance 20 from a battery 22. This current is adjusted to a standard value by means of a potentiometer resistance 23. By placing a switch 21 on contacts b the standard cell 2 is placed in opposition to the volts drop across a standard resistance 24 and the potentiometer 23 is adjusted until zero reading is obtained. By placing the switch 21 on contacts c the instrument itself is tested and if necessary a magnetic shunt is adjusted until the pointer gives a standard indication. Specification 537,784 is referred to.
Patent GB-112845-A (GB)
Title: Improvements in Tanks for Oil-break Electric Switches.
IPC: H01H33/55
Filed: 1917-02-22
Abstract: 112,845. Gregory, R. W., and Reyrolle & Co., A. Feb. 22, 1917. Tanks.-A tank for an oil-break electric switch consists of a strong outer vessel A and a separate inner oil-container B which is so formed as to be capable of yielding under internal pressure. The container B may be formed with corrugated or indented sides as shown in Figs. 1 and 7 respectively and with an indented or plain bottom. The air in the space between the vessel and the container acts as a cushion. The container may, as shown in Fig. 7, stand on the bottom of the vessel A, or, as shown in Fig. 1, a small clearance space may be provided below the container, which in this case is supported by a flange D. The vessel A may be provided with a gauge C for indicating leakage from the container.
Patent GB-1318714-A (GB)
Title: Process for producing organic hydroperoxides
IPC: C07C409/12
Filed: 1971-01-19
Abstract: 1318714 Organic hydroperoxides NIPPON YUSHI KK 19 Jan 1971 [22 Jan 1970] 2632/71 Heading C2C Tertiary organic peroxides of formula in which R 1  and R 2  are alkyl groups and Ar is an aryl group are prepared by oxidizing compounds of formula AR-C(R 1 )(R 2 )H with oxygen or air in the presence of an alkali metal salt of a trialkyl acetic acid containing 7-19 carbon atoms in a homogeneous liquid phase. The reaction is preferably carried out at a temperature of 80-150‹ C. Examples describe the oxidation of diisopropylbenzene and cumene to their mono-hydro peroxides and in each case a small amount of the hydroperoxide product is added to the reaction mixture as initiator.
Patent GB-571810-A (GB)
Title: Improved guard for power operated presses and like machines
IPC: F16P1/02
Filed: 1944-02-12
Abstract: 571,810. Machinery guards. CURRAN & CO., Ltd., E., CURRAN, J., and KING, C. L. Feb. 12, 1944, No. 2642. [Class 80 (iv)] Consists in a guard for power-operated presses and like machines having reciprocating working tools which are fed by hand with a strip of material, e.g. a machine for stamping disc blanks from a brass strip. According to the invention, a fixed grille 1 is fixed in a position displaced from the tools 2, 3, 4 and has an aperture adapted to permit of the passage of a strip 8 to the tools, such aperture being limited on opposite sides by members resiliently held in position. The members may comprise springs 7, Fig. 1, under tension, or rigid members 9, Fig. 2, supported by springs 7a. The fixed grille comprises rigid bars 5 fixed in vertical frame members 6.
Patent GB-702866-A (GB)
Title: Improvements in or relating to screen stencil-printing machines
IPC: B41F15/08
Filed: 1952-01-31
Abstract: 702,866. Stencilling machines. McLAURIN, J. N. Jan. 31, 1952, No. 2654/52. Class 100 (2) A screen stencilling machine comprises a screen frame 2, Fig. 1, pivotally mounted near its rear end on the fixed frame 5 of a horizontal printing bed 32 and counterbalanced by a weight 4 so as to tilt upwards when released and a resilient squeegee 21 mounted for rocking movement on a horizontal axle 11 on a carriage A reciprocable across the screen by mechanism consisting of a pair of chains 18, Fig. 2, to which the axle 11 is attached by arms 17. An electric motor 1, Fig. 1, drives the chains and is controlled by a switch 33 actuated to stop the motor by the tilting up of the frame 2 and vice-versa. The frame is held in the horizontal position for printing by a catch 6 released at the end of the printing stroke by abutment between the carriage A and a member 15 connected to the catch. As the arms 17, Fig. 2, pass round the sprockets 19, 20 at each end of the chain, the axle 11 is oscillated to rock the squeegee into engagement with the screen for the printing stroke and to lift it clear at or near the end of the printing stroke for the return stroke. A slide valve is tripped momentarily during the return stroke of the carriage allowing a charge of colour to fall from the reservoir 31 on to the screen. The pressure of the squeegee on the screen may be adjusted by screws 23a mounted on arms 23 on axle 11 and bearing against the squeegee carrier. The momentum of the driving means for the carriage causes it to move a short distance on the return stroke in readiness for the next printing stroke, after the screen has tilted up and switched the motor off.
Patent GB-870717-A (GB)
Title: Improvements in or relating to magnetic transducing heads
Inventor: ELLIOT JAMES
IPC: G11B5/29
Filed: 1959-01-24
Abstract: 870,717. Magnetic record heads. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 25, 1960 [Jan. 24, 1959], No. 2660/59. Class 40 (2). A multi-track head comprises non-magnetic mounting members 1, 2 disposed face to face, each having a recess 5, 6 oblique to the medial plane, a polepiece 9, 10 in each recess, said mounting members and said polepieces being slotted at 12 to form separate pairs of polepieces, core means 13 completing the magnetic circuit of each pair of polepieces, each core means 13 carrying a coil 14, and magnetic screens disposed in each of the slots 12. Figs. 3 and 4 show a modification in which the members 1, 2 are provided with slots 15 for the insertion of the core means 13 and its associated coil 14, after which a cushion 16 and screw 17 secures the said core and coil in position. The portions of the slots 15 each side of the screw provide passages for the insertion of suitable " potting " material.
Patent GB-1077792-A (GB)
Title: Improvements relating to brackets
Inventor: HANKIN ROBERT WILLIAM
IPC: A47B96/06
Filed: 1964-01-22
Abstract: 1,077,792. Shelf brackets. SWISH PRODUCTS Ltd. Jan. 22, 1965 [Jan. 22, 1964], No. 2717/64. Heading A4B. A nylon shelf bracket 10 with a mounting plate 11 having a dovetail cavity 12 to engage an element 14 secured to a wall or like surface and a support member 16 projecting perpendicularly from the plate 11 has a slot 18 to receive the end of a shelf and a strengthening web 17. In a modification, Fig. 6, two slots 26, 27 are provided to support adjacent ends of a pair of coplanar shelves.