baber/WOPTO huggingface dataset:
Patent GB-277689-A (GB)
Title: Improvements in telephonic loudspeakers
IPC: H04R7/12
Filed: 1927-09-17
Abstract: 277,689. Horny, F. Sept. 17, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Diaphragms; magnetic instruments. - Relates to hornless loud-speakers of the kind employing a large conical diaphragm to the apex 8 of which a vibratory element is attached and consists in supporting the rim of the diaphragm on one or both sides by a ring or rings 7 of wadding &c. The rim is preferably formed with peripheral reinforcement corrugations 6. The diaphragm may be made of paper impregnated with artificial resin, e.g., from one of the materials known under the registered Trade Marks " Bakelite," " Gummoid " or Pertinax." Two or more diaphragms of different sizes may be employed either as shown at 2, 3 in Fig. 1 on the same side of the electromagnet 1 or as shown at 4. 5 in Fig. 2 on opposite sides thereof.
Patent GB-1436899-A (GB)
Title: Document copying apparatus
IPC: G03G15/04
Filed: 1973-05-23
Abstract: 1436899 Document copiers XEROX CORP 23 May 1973 24563/73 Headings G2A and G2H A document 11 is copied line-by-line on to an electro-photographic drum 18 by a scanning system 12-17, a photo-detector (21), Fig. 2 (not shown) being positioned adjacent the drum surface to detect the intensity of the image during a precopy scan and to control the image intensity or the bias on an electro-photographic developer applicator accordingly. The photo-dector may control image intensity by adjusting the intensity of a lamp 15, by adjusting the size of an exposure slit, or by inserting a neutral density filter. To compensate for the light reflected from platen cover 22 on additional photo-detector (not shown) may be located adjacent the edge of the cover, or the cover may have a dark stripe along the line of sight of the first photo-detector other methods of compensating are also described.
Patent GB-144534-A (GB)
Title: Improvements in children's vehicles propelled by the rider
IPC: B62M1/00
Filed: 1919-10-08
Abstract: 144,534. Case, H. W. Oct. 8, 1919. Velocipedes for children; direct-action velocipedes.-In a child's vehicle with rear bolsters 4 depending from the body 2 and an axle-tree 5 mounted between the bolsters and having an axle 7 at each extremity, each axle is provided with a a pair of flanged collars 9, 12, of the form shown in Fig. 4, which form bearings for the wheels 8 and prevent binding of the wheels and axles. The wheels and collars are retained on the axles by buttons 15 provided with pins 14, which are covered with glue and inserted in holes in the ends of the axles. The steering-post 20 is mounted in a forward bolster 18 and carries an axle 24 having threaded ends, on to which are screwed the front wheels 25, the ends of the axle being first coated with glue. Metallic collars 23, similar to those used for the rear wheels, are provided on the axle 24. The pedal members 26 are screwed into holes provided near the circumference of the wheels 25.
Patent GB-677397-A (GB)
Title: Improvements in or relating to methods of polymerisation
IPC: C08F2/18
Filed: 1950-10-10
Abstract: A non-emulsified aqueous suspension of monomeric vinylidene chloride, vinyl chloride or acrylonitrile or mixtures of monomeric vinylidene chloride with vinyl chloride or with acrylonitrile, in a closed system to prevent loss of monomer vapour, is polymerized in the presence of from 0.2 to 1 per cent, based on the weight of monomer, of a catalyst consisting of 2,4-dichlorobenzoyl peroxide or lauroyl peroxide and from 0.1 to 5 per cent, based on the weight of monomer, of low viscosity methyl hydroxypropyl cellulose having a methoxyl content of from 25 to 32 per cent and containing from 0.05 to 0.2 hydroxypropyl groups per C6H10O5 unit, the weight ratio of water to monomers being from 1 : 1 to 4 : 1, and the dispersion of polymerizing particles being maintained by agitation at a temperature from 25 DEG  to 65 DEG  C. until at least 70 per cent polymerization has occurred.  The cellulose derivative employed may be made by the reaction between alkali cellulose and a mixture of a relatively large amount of methyl chloride and a much smaller amount of propylene oxide.
Patent GB-1203483-A (GB)
Title: Improvements in a hydro-dynamic spindle assembly having a spindle rotatable with axial reciprocation
IPC: F16C33/10
Filed: 1968-05-23
Abstract: 1,203,483. Grinding. SOC. NOUVELIE DE ROULEMENTS. 23 May, 1968 [26 May, 1967], No. 24776/68. Heading B3D. A hydro-dynamic spindle assembly comprises a spindle 2 for rotation and axial reciprocation in hydro-dynamic bearings 3, 4, the axial reciprocation of the spindle being effected by hydraulic pressure applied to the spindle and transmitted to a tool, such as a grinding wheel, directly by the spindle, the pressure and its regulation being controlled by a distribution device and the fluid being utilized to lubricate the bearings of the spindle. Each hydrodynamic bearing comprises three bushes supported in the body 1 of the assembly. The spindle is formed with a collar 10 acting as a piston located between a pair of rings 12, 13 and defining chambers 14, 15 alternately supplied with fluid pressure from a valve 18 having a spool 30 reciprocated by a crank 31 to reciprocate the spindle. Fluid pressure from the chambers passes through gaps between the spindle and rings to the bearings 3, 4. The ends of the stroke of the collar 10 are limited by hydro-dynamic stops formed by wedges of fluid in V-shaped slots 38 in the rings 12, 13.
Patent GB-367791-A (GB)
Title: Improvements in or relating to screw propellers
IPC: B21K3/04
Filed: 1930-08-19
Abstract: 367,791. Screw propellers. ALUMINIUM, Ltd., 22, Canada Life Building, Toronto, Canada.-(Assignees of Handler, A. A. ; 2210, Harvard Avenue, Cleveland, Ohio, U.S.A.) Aug. 19, 1930, No. 24793. Convention date, Aug. 19, 1929. [Class 114.] A metallic airscrew blade is made from a billet of solid metal and one stage of the process involves axially upsetting or extruding the root portion of the blade. The extruding may be effected so as to produce a hollow or recess within the blade shank and this recess may be continued towards the root of the blade. A billet A after heating is rolled to rough blade form by rollers R and the root portion is then confined in a die 2 and an upsetting tool 4 is introduced so that the metal is forced out into the die and the point 5 of the die produces a hollow portion. The root is subjected to a series of such piercing operations until the blade and root have the form shown in section in Figs. 11 to 15.
Patent GB-186903-A (GB)
Title: Improvements in sound-reflecting devices for talking-machines
IPC: G10K13/00
Filed: 1922-09-14
Abstract: 186,903. Telegraphie-Ges. System Stille. Oct. 1, 1921, [Convention date]. Sound magnifying and directing appliances.- In a gramophone of the kind having an internal horn arranged so as to direct the sound on to an angular reflector, the outer edge of the horn is cut away as shown, forming incisions 4, 5, and the reflector 6, which is mounted on a sounding- board 7, has its apex disposed in two of the incisions which are diametrically opposed.
Patent GB-429325-A (GB)
Title: Improvements in rolled metal props, struts and like shoring members of splayed h sectional form
IPC: E21D15/502
Filed: 1934-08-30
Abstract: 429,325. Metal constructional bars. RICHARDS, F., Glenaraeth, Baglan Road, Port Talbot, Glamorgan. Aug. 30, 1934, No. 24970. [Class 20 (ii)] Rolled-metal sections of the general proportions shown in Specification 375,572 and with splayed flanges, for use as props or struts, have the flanges 1 decreasing or increasing in thickness uniformly from their roots 3 outwardly, as shown in Figs. 1 and 2, respectively. The sections can be made with thicker webs than is usual in normal rolled sections without splayed flanges, and are thus capable of greater resistance to torsional stresses when these occur.
Patent GB-1034817-A (GB)
Title: Decontamination of radioactive solutions
Inventor: CRAWLEY RALPH HUGH ALFRED
IPC: G21F9/12
Filed: 1962-06-29
Abstract: 1,034,817. Processing radio-active waste. ENGLISH ELECTRIC CO. Ltd. June 21, 1963 [June 29, 1962], No. 25004/62. Heading G6R. Cooling-pond water from a nuclear reactor installation is decontaminated from radio-active cations, including caesium, by adjusting the pH to 5 to 7 and then pumping the water through solid sodium alumino-silicate of the general formula Na2O.Al2O3.nSiO2.6H2O, the number n being 4, 5 or 6, in order to remove the radioactive cations by ion-exchange. Alternatively, the contaminated water is pumped through a strong-base ion exchanger which removes all the cations, and these cations are taken up by an acid regenerant which is then neutralized and treated with sodium alumino-silicate as in the first process.
Patent GB-967406-A (GB)
Title: Improvements in or relating to domestic open fireplaces
IPC: F23L17/00
Filed: 1962-06-29
Abstract: 967,406. Heating air. Y. COLLARD. June 29, 1962 [June 30, 1961], No. 25041/62. Heading F4S. A fireplace has an air heater 13 partially in the flue 19 with an outlet 11, which may include a filter, controlled by a horizontally pivoted vane 18, although a horizontally sliding, graduated plate may alternatively be used, Fig. 2 (not shown). The air enters the heater through an external inlet 16 after passing beneath the plate 14 on which the fire burns. The housing 20 of the shutter device, Fig. 4 (not shown), may include the filter or a vaporizable substance of a de-odourising or disinfectant nature. Specification 116,367 is referred to.
Patent GB-945524-A (GB)
Title: A sealing member
Inventor: MILSTER ARTHUR NICHOLAS
IPC: F16J15/32
Filed: 1961-07-11
Abstract: 945,524. Piston packing. WAGNER ELECTRIC CORPORATION. July 11, 1961, No. 25043/61. Heading F2T. A rubber &c. cup packing 10 for pistons comprises a base portion 25, an annular sealing portion 27 having a sealing edge 29 and a further integral portion 30 extending radially inward and axially beyond the edge 29. The outer surface 28 of the portion 27 forms an obtuse angle with that of the portion 30 and the surfaces 28 and 33 converge to produce a reduced section 34 adjacent the edge 29.
Patent GB-1210247-A (GB)
Title: Reducing vibration in engine compressor assemblies
Inventor: HERON VICTOR
IPC: F02B63/04
Filed: 1967-09-27
Abstract: 1,210,247. Balancing. V. HERON. Sept. 27, 1967, No.25045/70. Divided out of 1,210,245. Heading F1M. A rotationally balanced engine-compressor assembly has a crank-shaft 14, at least one cylinder, at least one piston 11, connected to the crank-shaft, a counter flywheel 25 and gearing 22, 23 inter-connecting the crank-shaft and counter flywheel so that they are forced to turn together at fixed speed ratios. At least one compressor element 12, 13 is driven from the crank-shaft by at least one non-yielding connection. The algebraic sum of the moments of inertia about axes parallel to the crank-shaft of all the rotating parts of the assembly each multiplied by the positive or negative ratio of its speed relative to the speed of the crank-shaft is approximately zero. As shown the compressor is a reciprocating compressor but to other types of compressor may be employed.
Patent GB-1001291-A (GB)
Title: Methods of brazing titanium components using silver-aluminium brazing alloys
Inventor: DAVIES JOHN ELVET
IPC: C22C5/06
Filed: 1962-06-29
Abstract: A brazing alloy for titanium metal or alloy components consists of Ag 85.1-99.5% and Al as balance, except for impurities.  With Al 0.5-14.9%, the alloy may additionally contain one or more of: Li between 0.05% and 1%, Cu, Ni or Mn each between 0.05% and 2%.
Patent GB-1064795-A (GB)
Title: Method of purifying metal
Inventor: SCRUGGS DAVID M
IPC: C22B9/14
Filed: 1964-06-18
Abstract: A method of purifying metals containing oxygen as an impurity comprises adding a finely divided metal oxide which will combine with the oxide of the metal to be purified to form a spinel and holding the mixture at a sufficiently high temperature to form the spinel and to allow the impurities to migrate thereto.  Powdered oxide may be added to a melt of the metal or a powdered mixture of the metal and the oxide may be sintered.  If it is required to remove the spinel the dispersion modified metal may be melted under a protective atmosphere and the spinel allowed to settle out and be removed.  In examples Be is purified by adding Al2O3 in a powder metallurgical process and Cr2O3 in a melting process.
Patent GB-1073466-A (GB)
Title: 17ª‡-halohydrocarbon derivatives of oestradiols
IPC: C07J1/00
Filed: 1964-06-18
Abstract: Novel steroids of the formula <FORM:1073466/C2/1> (wherein Y is trifluorovinyl, 11,21,21 -trifluoroethyl, trifluoropropynyl, 31,31,31 - trifluoropropenyl propenyl or 31,31,31 - trifluoropropyl; R is H or acyl; and R1 is H, acyl, alkyl, aralkyl or cycloalkyl) are prepared by reacting estrone or an ether thereof with trifluropropyne which has been previously treated with ethyl magnesium bromide, or with trifluorovinyl magnesium bromide.  The trifluoropropenyl product is prepared by hydrogenation of the trifluoropropynyl compound in the presence of lead deactivated palladium on calcium carbonate, the trifluoroethyl product by hydrogenation of the trifluorovinyl compound in the presence of platinum oxide, and the trifluoropropyl product by hydrogenation of the trifluoropropynyl product in the presence of platinum oxide. 3- and 17-cylates are prepared by standard procedures.  The 3-methyl and -benzyl ethers of estrone are prepared by reacting estrone with dimethyl sulphate and benzyl chloride respectively.  The steroids of the invention, which are stated to be estrogenic agents, may be made up into pharmaceutical compositions for oral or parenteral use with suitable carriers.
Patent GB-1358844-A (GB)
Title: Dynamo electric machines
IPC: H02K9/19
Filed: 1970-05-26
Abstract: 1358844 Cooling dynamo electric machines ROTAX Ltd 19 May 1971 [26 May 1970] 25308/70 Heading H2A In a dynamo electric machine, e.g. an alternator, having at least one machine component, e.g. rotor winding end turn 17, mounted for rotation on a shaft 15 having an axial bore 19 for the passage of a cooling liquid, e.g. oil and a cooling liquid distributer 22 mounted on the shaft radially inwardly of the component, for discharging the liquid onto the component by centrifugal force, the distributer comprises walls defining an annular reservoir chamber communicating with the bore 19 and arranged to allow the liquid to flow to an annular flange 32 defining a weir, and a further wall 28 defining a plurality of apertures, e.g. slots 29 disposed radially outwardly of the weir, the apertures being arranged to distribute the liquid leaving the weir to the component when, in use, the shaft, component and distributer are rotated. The weir is provided to ensure an even flow of the liquid, and as shown in Fig. 2, the end turns 17 may be mutually spaced to increase the cooling effect; alternatively, the component may be a rectifier. The liquid may enter the bore 19 through an axial passage in one end of the alternator casing or, as shown, through a path which also cools the stator 10 and comprises a casing duct 20, a scroll 14 defined by the casing 13 and a cylinder 12 in which the stator is mounted, and a further duct 21.
Patent GB-537648-A (GB)
Title: Improvements in or relating to eye shields or sunglasses
IPC: G02C5/14
Filed: 1939-09-07
Abstract: 537,648. Goggles. CLARK, G. M., (Lapin Products, Inc.). Sept. 7, 1939, No. 25341. [Class 97 (i)] Eye-shields or sunglasses, intended especially for manufacture from moulded plastics such as resins and cellulose derivitives, comprise a substantially flat front portion A with glass lenses B and with substantially vertical straight ends 13 having hinge lugs 15 projecting rearwardly adjacent their upper and lower ends, together with temples C having forward portions of substantially the width between the lugs 15 and formed with lugs or extensions adjacent their upper and lower edges co-operating with the lugs 15 to form hinge joints. The front edges of the temples are substantially straight and vertical, and abut against the parts 13 of the front portion when the shield is in use. In the form shown, the hinge lugs on the temples are formed by inwardly-directed flanges 20 extending along the upper and lower edges of the eye-shielding portions.
Patent GB-241224-A (GB)
IPC: C22C3/00
Filed: 1925-10-10
Abstract: 241,224. Meyer, M., and Meyer L., (trading as H³ttenwerke Tempelhof A. Meyer). Oct. 11, 1924, [Convention date]. Drawings to Specification. Alloys; liquating.-A process for separating the constituents of tin-lead alloys containing also antimony or copper or both, or for obtaining from them other alloys of different composition, consists in melting the whole of the alloy or alloys and allowing the products to cool slowly so that certain constituents solidify while the remaining fluid metal or alloy may be drawn off. A eutectic alloy consisting of 55 per cent of tin, 41.4 per cent of lead, 0.1 per cent of copper, and 3.5 per cent of antimony may be obtained from a charge consisting of 44 per cent of tin, 32 per cent of lead, 4 per cent of copper, and 20 per cent of antimony, or from a charge consisting of 70 per cent of tin. 13 per cent of lead, 5 per cent of copper, and 12 per cent of antimony, the solid residue in the latter case being a bearing metal consisting of 76 per cent of tin, 16 per cent of antimony, 7 per cent of copper, and 1 per cent of lead. The process may be carried out in furnaces of such depth that the material cools sufficiently slowly to allow separation of the solidified and molten constituents.
Patent GB-245870-A (GB)
Title: Improvements in crystal detectors for wireless receiving sets
IPC: H01L29/00
Filed: 1924-10-24
Abstract: 245,870. Brooker, H. T., and Williams, L. E. Oct. 24, 1924. Crystal detectors. - A screw adjusting-device for the movable contact member of a crystal detector comprises a sliding spindle 14 extending through the usual ball component 13, and carrying a chuck 18 for securing the contact, an externally-screwed member 17 for imparting sliding movement to the opposite end of the spindle, and a spring 19 gripping the chuck at one end and the ball component at the other end, so as to prevent rotation of the spindle 14. The spindle 14 may also be of square section with its corners guided in slots in the ball extension 20. The externally-threaded sleeve 17 is engaged by an internally-threaded tube 15 attached to a control knob 16. The metal contact is withdrawn for searching by pulling the knob 16, and is returned to a fresh point on the crystal 5 by the spring 19, the pressure on the crystal being limited by the engagement of the end of the tube 15 with the ball 13. The pressure may be adjusted by turning the knob 16 and tube 15, thereby giving an axial movement to the sleeve 17 and rod 14, which are prevented from rotating by the frictional grip of the ball and sleeve 20, assisted by the grip of the spring 19 on the chuck 18 and the ball 13. The crystal is held in its cup 6 by a screwed cap 7. The angular movement of the knob 16 may be under the guidance of a micrometer gauge. The metal contact may be replaced by a second crystal.
Patent GB-371743-A (GB)
Title: Improvements relating to electric lamp holders
IPC: H01R33/46
Filed: 1931-09-10
Abstract: 371,743. Electric lamp holders. TUCKER, J. B., King's Road, Tyseley, Birmingham. Sept. 10, 1931, No. 25378. [Class 39 (ii).] In electric lamp holders of the type wherein spring-controlled plungers mounted within separate bores in the holder are provided at their upper endswith terminals for securing the lead connections, and protrude at their lower ends to engage the lamp contacts, each or either of the plungers b is arrested from rotation by means of a pin of the like c protruding therefrom and engaging a slot a<5> extending from the bore a3 into the body a of the holder. The pin c extends transversely through an aperture in the plunger and holds the helical plunger-spring d in compression against a shoulder a4 at the top of the bore a3. The downward movement of the plunger is restrained by a bent of angle-pin e, one limb e<1> of which is inserted into a transverse aperture in the plunger, while the other limb e<2> engages slidably within a vertical bore a<6> disposed parallel to the bore containing the plunger. An insulating web a<7> forms a partition between the leads to the plunger terminals b<1>. Specification 282,551, [Class 39 (ii), Electric lamps, Incandescent], is referred to.
Patent GB-666105-A (GB)
Title: Improvements in or relating to prefabricated cupola enclosures and the erection thereof
IPC: F27B1/12
Filed: 1949-10-04
Abstract: 666,105. Buildings; tents. MASCHINENFABRIK ESSLINGEN and HACKER, H. Oct. 4, 1949, No. 25482/49. Class 20(i) The cupola frame of a building consists of steel members pivoted at their ends to a central lifting collar so that when the collar is raised the steel members hang so as to form the cupola. As shown, the members b are initially joined to the lifting collar a by pins i, k resting in slots m, n. The collar is then hauled up the mast l until the pins lock in the slots when the cupola members hang as shown. As soon as the cupola is clear of the ground, the cupola support c is assembled. This comprises a number of vertical rods to which the ends of members b are bolted, the rods themselves being joined by a circular lattice work as shown in Fig. 9. Side ties e are also pivoted to these rods as by a bolt r so that as lifting continues the side ties are locked by a bolt s. Members e are then joined to each other by a series of tie-rods. Lifting continues until vertical members d, hinged to the bottom of these rods, hang in the vertical position and their ends are placed in prepared seatings. Finally, wall members are joined to the ends of the side ties e and the lifting mast removed.