baber/WOPTO huggingface dataset:
Patent GB-712602-A (GB)
Title: Improvements in or relating to electrical voltage or potential reproducing apparatus
Inventor: LAWS CECIL ALFRED
IPC: H01J31/04
Filed: 1949-01-03
Abstract: 712,602. Amplifiers using photo-cells. ELLIOTT BROS. (LONDON), Ltd. Jan. 3, 1950 [Jan. 3, 1949], No. 115/49. Class 40 (3). [Also in Group XL(c)] In an amplifier of the type in which the input voltage and a voltage proportional to the output are applied to the beam deflecting element of a cathode-ray tube and means are provided to vary the output in response to variations of the input so as to restore the electron beam to a zero position, the zero position of the beam is defined in relation to an element having one edge inclined to the perpendicular to the line along which the beam is deflected by variations in input, so that the initial relation between the input and output may be adjusted by deflecting the beam in the direction perpendicular to the line. The input and a voltage proportional to the output are applied to the X plates 3 and 4, Fig. 4, of a cathode-ray tube with a fluorescent screen 8. A mask 11 with a straight edge slightly inclined to the Y-axis determines the amount of light falling on to a photo-multiplier tube 10. The output is taken from the cathode of the third stage of an amplifier, Fig. 6, following the photo-multiplier tube 10. The relation between the input and output is adjusted by varying the voltage applied to a Y-plate of the cathode-ray tube.
Patent GB-166596-A (GB)
Title: Improvements in flexible joints for diving dresses
IPC: B63C11/10
Filed: 1920-01-02
Abstract: 166,596. Peress, J. S. Jan. 2, 1920. Fluid-seal joints; hinge and swivelling joints; joints with fluid-distended packing.-In a joint for the limb members of rigid diving-dresses, an incompressible but readily displaceable fluid cushion is interposed between the moving parts of the joint. The joint comprises cup-shaped members a, a<1>, Fig. 1, the member a<1> having double walls forming a space, within which is a bag formed of flexible diaphragms c of rubberized fabric or other material clamped between separable parts of the cup-shaped members and filled with water or other incompressible fluid. The joint may pivot about a single axis on external pins e, or may be adapted for universal movement by using two pairs of pins e, e<1 >at rightangles, as shown in Fig. 4. The pins serve only to hold the members together when out of water. Any suitable known means may be provided to prevent the entry of grit &c. to the joint, and to keep out the water in case of rupture of the fabric.
Patent GB-239097-A (GB)
Title: Improvements in or in connection with containers for dehydrating pads for use with receptacles for food-stuffs or the like
IPC: B65D51/30
Filed: 1925-01-03
Abstract: 239,097. Frenkel, G. Jan. 3, 1925. Internal fittings.-The lid 1 of a jar or other receptacle 2 is provided with a container 3 for a hygroscopic pad, said container having a single aperture 4 of relatively large diameter which is closed when the lid 1 is removed from the receptacle 2 by a spring shutter 6. The shutter, which prevents loss of the hygroscopic qualities of the pad, is mounted on a weak spring 8 carried in clips 9 on the lid 1. When the lid is applied, the mere weight of the container and pad overcomes the resistance of the spring and the shutter 6 uncovers the aperture 4 so that the pad can exert its hygroscopic action on the contents of the jar. When the lid is withdrawn the unstressed spring closes the shutter 6 against the aperture 4. The pad (not shown) is supported on projections 5 in the base of the container to allow free access of air.
Patent GB-1196391-A (GB)
Title: Process for producing Cells of Yeasts containing L-Tryptophan
IPC: C12P13/22
Filed: 1969-01-02
Abstract: 1,196,391. L-Tryptophan production. KYOWA HAKKO KOGYO CO. Ltd. 2 Jan., 1969 [24 Jan., 1968], No. 233/69. Heading C2C. Yeast cells containing L-tryptophan are pro duced by culturing a hydrocarbon-assimilating yeast under aerobic conditions in an aqueous nutrient medium containing a hydrocarbon or mixture of hydrocarbons as the main carbon source and anthranilic acid and optionally removing the cells from the culture liquor and extracting L-tryptophan therefrom. Specified micro-organisms are Candida tropicalis ATCC 20175, Candida arborea ATCC 20176 and Candida lipolytica ATCC 8661.
Patent GB-562869-A (GB)
Title: Improved device for the ventilation of buildings
IPC: F24F7/02
Filed: 1943-01-06
Abstract: 562,869. Ventilating. GELDER, R. Jan. 6, 1943, No. 234. [Class 137] A ventilator fitted in the roof of a building comprises one or more box-like compartments open at the top and bottom and formed from vertical walls 2, 3 with or without transverse dividing walls 7, the opening 1 for the passage of foul air being covered by horizontal baffle plates 4, 4a which are spaced from the opening to provide ventilating passages. Additional or alternative ventilating means may be provided on the roof slope 6 which is raised to allow air to pass beneath it and above the lower surface 6b, a vertical wind deflector 8 being mounted on the lower surface, and transverse deflectors 9 on the upper surface. Air entering through drainage openings 12 in the deflector 8 is directed upwards by baffles 14.
Patent GB-881241-A (GB)
Title: Improvements in or relating to ventilators
IPC: E06B7/10
Filed: 1959-01-02
Abstract: 881,241. Ventilators. MYERSON Ltd., F. T., SUTHERWOOD, G. R., PRESTON, D. G. and MARSTON, V. L. April 4, 1960 [Jan. 2, 1959], No. 278/59. Class 137. A ventilator for fitting in an aperture in a window comprises an annular member 111 clamped to the glass by a ring 114 and cooperating screw 115 and having apertures 124, and a second annular member 131 also having apertures 133 and mounted on the screws to slide relative to the first annular member to allow or stop the passage of air therethrough. The second member has a lip 132 which holds a circular disc of glass 139 in the centre of the ventilator. According to the Provisional Specification the three annular members may be made from a transparent plastics material in which case th e movable member may be formed integrall y with the centre disc.
Patent GB-672021-A (GB)
Title: Improvements in and relating to electric motors
IPC: H02K25/00
Filed: 1950-01-05
Abstract: 672,021. Electric motors. LONDEX, Ltd., and BESSON, A. P. Jan. 4, 1951 [Jan. 5, 1950], No. 328/50. Class 35. A unidirectional motor has is stator winding 4 interrupted by a vibrating reed 16 which is controlled by a spring 14 joining the reed to the disc rotor 16 at an eccentric 15. This spring 14 exerts impulses which maintain the reed 16 vibrating at its natural frequency so as to break and close the stator circuit twice during each resolution of the rotor 16. The reed is made to close the circuit shortly before the rotor 16 reaches its neutral magnetic point. The rotor 16 which is made of soft iron may comprise one or more pairs of poles. An adjustable leakage member may be provided. The rotor can be brought into a favourable position for re-starting by a centrifugally controlled or other device.
Patent GB-523558-A (GB)
Title: Improvements in chain dredge buckets
IPC: E02F3/12
Filed: 1939-01-04
Abstract: 523,558. Bucket dredges. TENNANT, W. J. (Taylor-Wharton Iron & Steel Co.). Jan. 4, 1939, No. 330. [Class 68 (i)] [Also XXV] In a bucket dredge in which adjacent buckets are connected by an L-headed pin, the L-head 6 fits a slot of which the lower wall 9 is formed as an integral flexible tongue adapted to be forced against the L-head preferably by a jack screw 11 adapted to enter a socket 12 in the wall 9 against which a nut 13 bears ; a screw cup 16 is held against rotation by a feather 17 and slot 18.
Patent GB-692279-A (GB)
Title: Method of making chloromethyl methyl ether
Filed: 1951-01-04
Abstract: Chloromethyl methyl ether is obtained by introducing hydrogen chloride into an aqueous mixture containing approximately molecular equivalent proportions of formaldehyde and methyl alcohol in admixture with calcium chloride in amount corresponding approximately to from 0.5 to 1 part by weight of the calcium chloride (based on the anhydrous salt) per part of the water to be present upon completion of the reaction, at a reaction temperature between 0 DEG  and 60 DEG C., until the mixture is substantially saturated with respect to the hydrogen chloride and thereafter separating the chloromethyl methyl ether from the reaction mixture.  The formaldehyde is preferably employed in the form of an aqueous solution containing from 27 to 40 per cent by weight or more of formaldehyde. although formaldehyde in solid or polymeric form such as paraformaldehyde or trioxan may be used. The calcium chloride may be employed in amount sufficient to form a saturated or nearly saturated solution of the calcium chloride in the aqueous medium and the reaction is usually effected at 10-50 DEG  C. and at substantially atmospheric pressure, although lower or higher pressures, e.g. from 5 to 20 pounds per square inch may be used.  In examples: (1) hydrogen chloride is passed into a mixture of methyl alcohol, an aqueous formaldehyde solution, and calcium chloride (containing water of crystallization) maintained at 40-50 DEG  C., chloromethyl methyl ether being obtained from the organic layer; in a comparative example in which the calcium chloride is omitted a reduced yield of the product is obtained; (2) a mixture of methyl alcohol, paraformaldehyde, and calcium chloride (containing water of crystallization) is stirred and heated to 40 DEG  C. and a stream of hydrogen chloride is then introduced, chloromethyl methyl ether being recovered from the organic layer; (3) as in (1) except that the reaction mixture is maintained at 10 DEG  C.; in a comparative example the reaction is effected under similar conditions but in the absence of calcium chloride the product being obtained in reduced yield.
Patent GB-667588-A (GB)
Title: Improvements relating to end closure caps for tubes
IPC: B60K15/04
Filed: 1950-01-06
Abstract: 667,588. Closure caps. SILK, W. F. July 5, 1950 [Jan. 6, 1950], No. 405/50. Class 125(iii) A key-operated closure cap 28 for tubes such as the filling tubes of motor vehicle fuel tanks has a lock barrel 14 rotatably mounted in the cap carrying a detent member 17 adapted to be moved by the key 15 into and out of engagement with a lug 25 of a securing strap 23 fixed to the outside of the tube, rotation of the cap being prevented by a stop 22 on the tube engaging stops 20, 21 on the cap. On withdrawal of the key from the barrel 14 Jocking pins enter a slot in the cap body to prevent rotary movement of the barrel. The stops may be arranged to extend within the tube.
Patent GB-115004-A (GB)
Title: A Variable distance Device for Pulleys of Belt-driven Vehicle.
Inventor: BLAKOE ROBERT
IPC: B62M7/10
Filed: 1918-01-08
Abstract: 115,004. Blakoe, R. Jan. 8, 1919. Disconnectible gearing.-To tension the driving- belt of a motor-cycle, car, bath chair, &c., and to disconnect the gearing by slackening the belt, the motor, which is placed above the driving-belt pulley, is raised and lowered by means of levers, cranks, eccentrics, cams, wedges, or pneumatic pistons. The motor shown in Fig. 1 is mounted on a platform A which is adjustably supported above a platform B by levers G operated by a handle I on the handle-bar of the cycle. Springs may be arranged between the platforms A, B and a spring may be placed in the connexion H operating the levers G. In the case of a car the platform B may be supported by stays on the front and rear axles or by the undercarriage or frameof the vehicle.
Patent GB-1517771-A (GB)
Title: Apparatus for effecting treatment of an elongate piece of photographic material
IPC: G03D3/13
Filed: 1976-04-06
Abstract: 1517771 Endless belt conveyors; feeding webs WAINCO PRODUCTS Ltd 6 April 1976 [6 Jan 1975 5 Jan 1976] 426/75 and 00134/76 Headings B8A and B8R An endless belt conveyor for feeding a web along a predetermined path comprises an endless belt 10, Fig. 2, provided at spaced intervals therealong with clips 20 engaging a marginal web portion, the clips being formed by relatively movable U-shaped members 21, 23. The member 23 is spring biased and actuated by a cam follower 33 pivoted by a cam 35, Fig. 3, which is fast with a guide wheel 13 over which the belt is passed at web infeeding and outfeeding locations (Fig. 1, not shown). The cam follower 33 acts on the end of the member 23 provided with a washer 27 supporting one end of a spring 25, which causes the clip to close. In a modification the belt 10 is replaced by a stationary guide track 50, Fig. 5, and the clip is formed by U-shaped members 54, 58, engaging a web 55.
Patent GB-156532-A (GB)
Title: Improvements in roof trusses for halls and like buildings
IPC: E04C3/11
Filed: 1921-01-05
Abstract: 156,532. Fischer, F. Dec. 9, 1919, [Convention date]. Roofs.-Roof trusses for halls and like buildings consist of end trussed portions designed for the usual span together with intermediate portions for any other span, the latter portion being designed and made for the particular span under construction. Fig. 1 shows a truss with the truss end portions 1 connected together at the ridge 2 and also by a tie-rod 3. Fig. 2 shows a roof truss for a particular span, the end portions 1 being provided with and connected to an intermediate portion 4. Figs. 3 and 4 show connecting plates, the upper members 5 of the intermediate portion 4 being bolted or riveted to the plate, Fig. 3, by means of holes 11 and the vertical members bv means of holes 10, while the lower members 6 of the intermediate portion are connected to the plate 8, Fig. 4, by means of holes 9. In cases where no intermediate portion is required, the part of the plate, Fig. 3, to the right of the line 12 is cut away.
Patent GB-574155-A (GB)
Title: Improvements in and relating to electrical amplifying apparatus employing dynamo electric machines
IPC: H02P25/28
Filed: 1944-01-10
Abstract: 574,155. Exciting dynamo-electric machines. FLETCHER, G. H., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Jan. 10, 1944, No. 463. [Class 35] The excitation of a metadyne which may act as the exciter of a main machine comprises components depending on desired variable quantities, the effect of which is determined by one or more impedances having non-linear current-voltage characteristics. In the form shown, the excitation of windings 10 and 12 of the metadyne 1 varies with the current and voltage respectively of main motor 2, the winding 10 being connected across motor interpole winding 14, and non-linear impedances 15, 18 are connected in their circuits and these windings are assisted or opposed by winding 13, the excitation of which varies With rate of change of motor current. The component produced by section 11 energized by tachometer generator 17 becomes effective as the motor reaches the limiting speed and assists sections 10, 12. Specification 568,155 is referred to.
Patent GB-543142-A (GB)
Title: Improvements in and connected with fire extinguishing
IPC: A62D1/00
Filed: 1940-07-05
Abstract: 543,142. Fire-extinguishing. CAREW, G. E. July 5, 1940, No. 481/42. Divided out of 11281/40. [Class 47 (ii)] A fire-extinguisher for incendiary bombs &c. comprises zinc chloride in a container of stiff paper &c. coated internally with rubber &c. paint and provided with a sealed lid to make it air and damp tight. A fire-extinguishing medium comprises an aqueous solution of zinc chloride containing upwards of 50 per cent. of the chemical, to which is added as much ammonium chloride as is possible.
Patent GB-1082354-A (GB)
Title: Trifluoroacetoxy-haloalkyl benzimidazoles
IPC: C07D235/12
Filed: 1964-11-11
Abstract: The invention comprises compounds of the general formula <FORM:1082354/C2/1> wherein each of R1 and R2 is H, CF3 or a C1- 5 alkyl or alkoxy radical, R3 is H or a C1- 5 alky radical, R5 is H or CF3CO-and X is CI or Br, and their acid-addition salts with CF3COOH. The compounds are prepared by treating a compound of the formula <FORM:1082354/C2/2> or a CF3COOH addition salt thereof with chlorine or bromine in a solvent.
Patent GB-379601-A (GB)
Title: Improvements in compression refrigerating plants
IPC: F25B41/04
Filed: 1932-01-07
Abstract: 379,601. Refrigerating. BAUMANN, C., 19, Hardturmstrasse, Zurich, Switzerland. Jan. 7, 1932, No. 492. Convention date, Jan. 8, 1931. [Class 29.] Compression machines and systems. -The throttle valve 5 in the suction pipe of the continuously running compresser of a refrigerating plant is regulated automatically by means, e.g. an auxiliary motor 6, controlled by a thermostat 7 in the cooling chamber of the plant. When the temperature in the chamber rises or falls the motor is actuated to open or close the valve respectively. The thermostat may control a solenoid or fluid pressure for regulating the valve.
Patent GB-1020088-A (GB)
Title: Improvements in or relating to the recovery and purification of acrylonitrile
Filed: 1965-01-06
Abstract: Acrylonitrile is recovered and purified from a substantially ammonia-free gaseous reaction product containing hydrogen cyanide and saturated and unsaturated carbonyl compounds in addition to acrylonitrile by cooling and partially condensing the reaction product, washing the cooled, partially condensed product with water to absorb acrylonitrile, hydrogen cyanide and the carbonyls, the cooling and absorption steps carried out while maintaining the pH at less than 3, distilling the aqueous solution to recover a distillate containing acrylonitrile, hydrogen cyanide and the carbonyls, allowing the carbonyls and hydrogen cyanide to react to form cyanhydrins, adjusting the pH of the resulting mixture to less than 4 and separating the cyanhydrins from the acrylonitrile and excess hydrogen cyanide by distillation.  The pH is maintained at less than 3 by injection of a spray of sulphuric acid into the gases before condensation.  The water used in the absorption step is preferably at a pH of less than 3 before use.  The final acrylonitrile containing distillate may be further purified, e.g. by fractional distillation.
Patent GB-956932-A (GB)
Title: Improvements in or relating to window catches
Inventor: MOSS NORMAN SIDNEY
IPC: B61D25/00
Filed: 1962-01-06
Abstract: 956,932. Sliding bolts. WILMOTBREEDEN Ltd. Jan. 3, 1963 [Jan. 6, 1962], No. 603/62. Heading E2A. A window catch comprises a spring-loaded bolt 9 for engagement with a recess or aperture 18 in a surface 16 relatively to which the window slides, and a pivotally mounted release lever 23 which is manually operable to release the bolt 9 by moving the latter against the spring-loading, the lever having a face 26 which engages the surface 16 with a wedging action as the lever moves away from the release position. As shown, in which a die-cast housing 1 is mounted on the window 2 itself, adjacent a bottom edge thereof, and in which the window is mounted for horizontal sliding movement in upper and lower guides, the housing includes a front plate 19 having a bottom section 20 which co-operates with a face 17 of a sill member 14 carrying the surface 16. The arrangement is such that the sill member is clamped between the lever 23 and the section 20 whereby to produce vertical restraint of the window and obviate tendency for window rattles.
Patent GB-1214122-A (GB)
Title: Hand operated printing machine
Inventor: SCHLEE HERMANN
IPC: B41K3/04
Filed: 1969-01-03
Abstract: 1,214,122. Manually operated platen press. H. SCHLEE. 3 Jan., 1969 [28 Aug., 1969], No. 604/69. Heading B6C. In a manually operated ribbon-inked platen printing machine for printing prices on labels, a number-printing apparatus is carried at the lower end of a vertically movable member 20 the descent of this member to affect the printing of a label lying face upwards on an impression table 20 being effected by a spring-loaded handle 26 the return of which automatically causes feed rollers 10 and 11 to rotate sufficiently to pull a predetermined amount of inking ribbon across the table 20 from a spool 6 in readiness for the next printing operation of the machine. The depth of printing stroke of the numbering- apparatus may be adjusted by a vertically movable threaded rod 22.
Patent GB-227455-A (GB)
Title: Improvements in hinge devices for spectacle frames in tortoise shell or imitation material, and the like
IPC: G02C5/00
Filed: 1925-01-08
Abstract: 227,455. Lissac, M. Jan. 11, 1924, [Convention date] . Spectacles.-Hinges for tortoiseshell spectacle frames are constructed with two flat leaves a, e, one of which is inserted between the split ends d<1>, d<2> of the frame e. This leaf e is hinged to the leaf a carrying the temple piece by the pin d passing though lugs. The leaf a is secured to the temple piece by two screws as shown and the screws f, f<1> securing the lens in the frame passes through the leaf a.
Patent GB-1358935-A (GB)
Title: Complex electronic system
IPC: H01L23/525
Filed: 1972-01-06
Abstract: 1358935 Integrated circuit &c. memories and computing systems TEXAS INSTRUMENTS Inc 6 Jan 1972 [27 Jan 1971 (2) 13 May 1971] 660/72 Heading G4C A memory or computing system comprising a plurality of subsystems on a substrate includes at least one spare subsystem on the substrate, and each subsystem has an associated enabling means for selectively coupling that subsystem to conductors on the substrate whereby the required number of perfect subsystems are selected to form the complete system. In a computing system, spare sub-systems may be provided for each different type of subsystem. The description is mainly concerned with integrated circuit constuctions employing FET storage and gating circuits each enabling means being a set of gates for isolating the associated subsystem from the conductors, but reference is also made to charge transfer devices. Each memory subsystem may include, besides the storage array, the associated decode and drive systems, refresh generators and clock generators. After manufacture of an integrated circuit clip containing the system, test signals may be selectively supplied to the subsystem via test probes which are engaged with test pads intermediate the enable circuit and the subsystem or via the enable circuit which is selectively energized by connection of a jumper wire which also supplies power to the selected subsystem. After testing the enable circuits of the required subsystems are permanently connected to enable the associated subsystems.
Patent GB-586138-A (GB)
Title: Improvements in or relating to electron discharge valve amplifiers
IPC: H03F1/36
Filed: 1944-01-13
Abstract: 586,138. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 13, 1944, No. 662. Convention date, Jan. 13, 1943. [Class 40 (v)] In an amplifying circuit employing a valve 1, with unbyepassed biassing resistor 8, feeding over transformer 7 a load 12, means are provided for feeding back in regenerative sense some or all of the voltage developed across the secondary winding to counteract the degeneration produced by the unbyepassed resistor. The resistor 8 may be connected in series with the secondary or shunt fed (Fig. 2, not shown). By earthing an intermediate point on the secondary (Fig. 3, not shown), the cathode resistor of the preceding valve may be connected to the other end of the secondary.