baber/WOPTO huggingface dataset:
Patent GB-481871-A (GB)
Title: Improvements relating to the manufacture of porous articles from natural or synthetic rubber
IPC: C08J9/26
Filed: 1936-08-13
Abstract: Porous rubber having pores of controlled size is obtained by milling into a crude natural or synthetic rubber mix, e.g. derived from ethylene polysulphide, grains of a substance which is insoluble in cold water, convertible into a soluble substance by the action of heat, enzymes or a chemical reagent, and capable of resisting attrition on normally-spaced milling rolls, converting the grains during or after vulcanization into water-soluble form without permitting them to swell materially, and leaching the converted grains out of the rubber.  Suitable grains are those of starch, albumen, meat fibrin, or a lime-casein reaction product. Battery separators and reinforced filter sheets may be made of the product.ALSO:Porous rubber having pores of controlled size is obtained by milling into a crude natural or synthetic rubber mix grains of a substance which is insoluble in cold water, convertible into a soluble substance by heat, enzymes or treatment with a chemical reagent, and is capable of resisting attrition on normally-spaced milling rolls, converting the grains during or after vulcanization into water-soluble form without permitting them to swell materially, and leaching the converted grains out of the rubber. Suitable grains are those of starch, albumen, meat fibrin or a lime-casein reaction product.  Articles such as grooved battery separators and filter sheets having a perforated metallic reinforcement between two sheets of the rubber may be made by the process.
Patent GB-277170-A (GB)
Title: Improvements in and connected with alloys
IPC: C22C19/05
Filed: 1926-09-10
Abstract: 277,170. Kelly, T. D. Sept. 10, 1926. Alloys.-A malleable alloy consists of 33 1/3-90 per cent of nickel, 5-33 1/3 per cent of molybdenum and 5-33 1/3 per cent of chromium. The alloy is made by melting the metals under a flux of anhydrous calcium or magnesium chloride and carbon.
Patent GB-169868-A (GB)
Title: Improvements in grinding compounds
IPC: C09K3/14
Filed: 1920-07-27
Abstract: An abrasive compound used with water for grinding in valves or for other metal work consists of powdered carborundum distributed in a jelly of water and starch, flour or other water-soluble glutinous binder.  Formalin is added to preserve the binder.  The preferred proportions are 10 parts of carborundum, 1-2 parts of starch, 10-20 parts of water, 1/30 -\ba1/50 part of formalin.
Patent GB-267877-A (GB)
Title: Improvements in filling blocks for air-heaters or the like
IPC: F28D17/02
Filed: 1926-09-10
Abstract: 267,877. Strack, O., and Pfõlzische Chamotte-und Thonwerke (Schiffer & Kircher) Akt.-Ges. March 20, 1926, [Convention date]. Bricks, special shapes of. -A refractory filling block of the kind described in Specification 219,943 has, in addition to the recess c at one end to allow communication between the passages a in the block, a space d at the other end bounded by a spherical or conical surface d, and a cylindrical or prismatic surface d<2> to provide a more uniform communication between the passages a.
Patent GB-923028-A (GB)
Title: Improvements in trawls, especially bottom trawls
IPC: A01K73/02
Filed: 1960-06-27
Abstract: 923,028. Trawl nets. F. JAKOBSON. June 27, 1960 [June 27, 1959], No. 22530/60. Class 48. In a trawl net comprising wings 4 and an upper piece 2 extending beyond a bottom piece, a wedge-shaped insert 16 in the upper piece 2 extends forwardly beyond the headline, a rope 20 is connected between each forward corner 18 of the insert 16 and a trawl board 9, and a rope 23, to which the meshes are attached, extends along the upper border 24 of a wing 4, a front edge of the upper piece 2, the adjacent border 25 of the insert, the front edge 21 of the insert and the corresponding edges and borders on the other side of the net. Lifting boards 19 or floats are attached to the forward corners 18 of the insert 16 and floats 22 are arranged on the front edge 21 of the insert. Weights 14 are attached to the ground rope 13. The upper piece is cut along the diagonals of the four-sided figures formed by pairs of adjacent meshes to form a V for reception of the insert 16.
Patent GB-666672-A (GB)
Title: Improvements in and relating to laundry washing machines
Inventor: DEANE GILBERT
IPC: D06F95/00
Filed: 1949-08-31
Abstract: 666,672. Washing-machines. BAKER PERKINS, Ltd. Aug. 31, 1950 [Aug. 31, 1949], No. 22571/49. Class 138 (ii). A perforated cage for a laundry washing-machine rotatable on a horizontal axis in a stationary drum, is of polygonal shape in crosssection, the end opening of circular form being substantially tangent to the walls of the polygon, so that when a wall of the cage is in the horizontal unloading position, such wall, on which the clothes rest, will be level with the door opening in the stationary drum. In the arrangement shown, a central part 1 of a square-section perforated cage is built up from four angled walls 1a, 1b, 1c and 1d each having outwardly turned edges 4, 5 forming longitudinal channel formations which are secured together back-toback. The walls are riveted to end-rings 2, 3 and at one end, a sheet-metal ring 6 is riveted to outward flanges on the walls. At this end, the ring 2 is formed. with a flange 8 which conforms to the ring 6 and provides an opening 15 to the cage. The ring 2 is riveted adjacent its outer periphery, to the ring 6 and is provided. with outer and intermediate flanges 9 and 10. The other end of the cage is closed by a wall 11 to which the ring 3 is riveted and an internal gear-ring 14 is secured to the flange 10. The cage is mounted in a cylindrical drum 16, having a door 17, by means of rollers 18 which engage the flanges 9 of the rings 2 and 3, a pair of rollers being provided at each end and located on either side of and equidistant from the vertical plane containing the axis of the drum. Each roller is secured on a spindle 19 mounted in roller bearings 20 in a mounting element 21 which is removable with the roller 18. A pair of steadying rollers may be provided at each end of the cage beneath the rollers 18 and the roller spindles 19 may be eccentric to the elements 21 for adjustment purposes. The cage is driven by a pinion 23 at or adjacent the uppermost part of the gear-ring 14, the pinion being carried by a shaft carried in bearings on the drum 16. The drum is pivotally mounted at the door end and is raised and lowered by a hydraulic cylinder located at the opposite end. Connections to the drum for water and other solutions are located adjacent the pivoted end and a dumping valve (not shown) is provided in its lower wall. Ribs or beaters may be formed within the cage and the rings 2 and 3 may be stainless iron or the like castings.
Patent GB-1072753-A (GB)
Title: Signal responsive apparatus
IPC: G02B6/04
Filed: 1964-06-01
Abstract: 1,072,753. Pattern recognition. SPERRY RAND CORPORATION. June 1, 1964 [May 31, 1963], No. 22580/64. Addition to 962,087. Heading G4R. [Also in Division G1] The invention is a modification of that of the parent Specification in which a combination of frequencies (representing a character or speech) causes selected ones of a bank of lighttransmitting rods to vibrate, the rods being fixed at one end and having different resonant frequencies. Light from the free ends of the rods is passed through a mask to a photo-cell. A mask may be made by placing a photographic film adjacent said free ends and either applying no frequencies to the rods and processing the film to a get a negative image (" static mask ") or applying a characteristic combination of frequencies and processing the film to get a positive or negative image (" acceptance mask " and " rejection mask " respectively). In this invention, the combination of frequencies to be recognized is passed to two banks of rods, one bank having a rejection mask and the other having either a static mask or an acceptance mask. The outputs of the respective photocells are compared (e.g. in a bridge circuit) to get a difference or ratio signal which represents the degree of match between the combination of frequencies received and that the masks were constructed to recognize. Alternatively, a single composite acceptance-static mask can be used for recognition, being prepared by exposing autopositive film to yellow light with rod vibration, then exposing the film to bluewhite light without rod vibration.
Patent GB-260926-A (GB)
Title: Improvements relating to fittings for suspenders for personal wear
IPC: A41F11/02
Filed: 1926-09-15
Abstract: 260,926. Walker, Ltd., T., Walker, G. T., and Wood, H. H. Sept. 1?, 1926. Hose-suspenders. - In stocking or hose suspenders, the slotted or apertured lower portion 3, Fig. 2, and the lower loop 2 of the fitting are formed from a single length of wire which is bent up to form a substantially key-hole shaped opening 4 to be engaged by the usual stud element of tho suspender, the end portions of the wire being arranged to intersect or to cross one another at the upper or larger end of the opening and being then bent inwards to form the lower loop 2, the bent-in ends 5 being attached or hinged to the upper loop 1 of the fitting. The ends 5 may be housed within a sleeve 6 which serves to hinge the lower loop member 2 to the upper loop 1. Fig. 5 shows the upper loop 1 formed in one with the lower loop 2 and the lower apertured portion 3. The wire is preferably flattened at the points of intersection.
Patent GB-747831-A (GB)
Title: Improvements in or relating to protective means for internal combustion engines
Inventor: SHERLOCK JOHN EDWARD
IPC: F02D17/04
Filed: 1953-08-18
Abstract: 747,831. Indicating working conditions. BRITISH THERMOSTAT CO. Ltd. Aug- 3, 1954 [Aug. 18, 1953], No. 22767/53. Class 7(2) [Also in Group XXVI] Protective means for an internal combustion engine comprises units, such as flexible metallic bellows 1, 2, responsive respectively to temperature and pressure changes and respectively connected to the coolant and lubrication systems and also to temperature'and pressure indicators and to mechanical devices arranged to actuate a control lever to cut off the supply of fuel to the engine in the event of abnormal temperature and pressure conditions. The bellows 1, 2 carry rods 3, 7 having collars 4, 8 respectively arranged to act on opposite sides of the pivot 6 of a latching lever 5 which is normally engaged by a latch member 9 pivoted at 10 and pivotally connected to a second latch member 11 having a hooked end engaging in a recess in a cam 12 on a shaft 13 carrying the fuel throttle lever 14 spring-loaded to close. Return springs 16 and 17 are provided on the latch members 9 and 11 respectively. In the event of abnormally high coolant temperature or abnormally low lubricating oil pressure the bellows 1 and 2 respectively expand or contract to thereby rotate the lever 5 clockwise and release the latch members 9 and 11 to allow the throttle to close and stop the engine. The ends of the rods 3 and 7 also act respectively on a lever 20 and an auxiliary latching lever 24 both pivoted at one end 21, 24a and respectively actuating rack bars 22, 23 engaging pinions carrying pointers indicating temperature and pressure conditions respectively. Bell-crank levers 25, 26 mounted adjacent the rack bars 22, 23 are biased towards the bars by springs 27, 28 and held in their inoperative positions by a rod 29 which, when the cam 12 is released to stop the engine, falls into a depression 30 in the cam and allows the bellcranks to contact the rack bars and return them in their raised positions and thereby indicate the cause of failure. On starting the engine the latching lever 5 will be in its inoperative position due to lack of lubricating oil pressure, and the auxiliary latching lever 24 is arranged to hold the latch 9 until the oil pressure exceeds the minimum safe working pressure by about 5 pounds per square inch when the lever 24 is tripped and the latch 9 is then held by the lever 5.
Patent GB-316193-A (GB)
Title: Improvements in and relating to electric control systems
IPC: B66B1/50
Filed: 1929-07-24
Abstract: 316,193. British Thomson-Houston Co., Ltd., (Assignees of Lum, W.O.). July 24, 1928, [Convention date]. Thermionic valve-circuits .-A relay 44 in the anode circuit of a thermionic valve 41 picks up or falls out according as to whether the valve is quiescent or oscillating. Magnetically-coupled grid and anode coils 45, 46 normally cause oscillation, but the interposition of a metallic screen stops oscillation. As applied to a floor-levelling arrangement for a lift 29, the valve 41 and relay 44 are used for stopping on the downward journey, and are carried by the lift, the coils 45, 46 projecting from the side so as to co-operate with fixed screens 49. Similarly for upward movement another valve 42, relay 43 and screens 50 are used. As the floor, at which the stoppage is desired, is approached, the coils 45, 46 come into the range of the screen 49, relay 44 lifts, and energizes contactor 35, the motor 30 thus continues to run at a very slow speed until the screen passes from between the coils 45, 46, when it comes to rest immediately. Should the lift travel slightly past the desired floor, the other screen, valve, and associated relay come into'operation to reverse the motor and bring the lift back.
Patent GB-295284-A (GB)
Title: Improvements in and relating to the production of electric signalling impulses
IPC: G08C19/26
Filed: 1928-08-07
Abstract: 295,284. British Thomson-Houston Co., Ltd., (Assignees of Price, D. R.). Aug. 8, 1927, [Convention date]. Tell-tale apparatus.- -In a method of indicating the speed of rotation of an electric meter &c., an arc discharge is periodically interrupted or diverted so as to cause impulses of corresponding frequency which may control a ratchet-operated integrating device or a magnet drag indicator which gives a deflection proportional to the average rate of the impulses and therefore indicates the speed of rotation of the meter. In the arrangement shown in Fig. 1, mica strips 18, 19 on a disc carried by the meter shaft 10 interrupt an arc discharge between electrodes 14 fed by the high-tension secondary winding 22 of an opencore transformer 20 having a second low-tension secondary winding 23 in circuit with a relay 24 controlling a ratchet-operated integrator 11 and a magnetic drag indicator 12. The indicator 12 comprises a notched disc 33 driven by a motor 32 and released at each impulse received by the magnet 31. By means of a pawl-and-ratchet the disc 33 drives a spring shaft 35, which in turn drives a permanent magnet 37 acting on a spring- controlled induction disc 38 connected to the pointer 12. In the modification shown in Fig. 2, an arc discharge normally passes between electrodes 14 but may be diverted to pass through electrodes 41, 42 in series with relays 43, 44 by metal insets on insulating members 47, 48 arranged at different distances from the spindle 10. The relays 43, 44 may control a double-relay ratchet mechanism 53 for operating a counter. In a further modification an insulating disc 54, Fig. 3, on the meter spindle has cut-away portions at different distances from the spindle, so that by arranging the electrodes 14 on the radius of opening 55 or of openings 56, one or two impulses per revolution may be produced. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement wherein the meter spindle carries a conducting member which establishes an arc between fixed electrodes twice per revolution. This subjectmatter does not appear in the Specification as accepted.
Patent GB-643247-A (GB)
Title: Improvements in centrifugal pumps
IPC: F04D29/14
Filed: 1948-08-30
Abstract: 643,247. Centrifugal pumps; stuffing-box substitutes. WILFLEY & SONS, Inc., A. R. Aug. 30, 1948, No. 22836. Convention date, April 9. [Classes 110(i) and 122(v)] In a centrifugal pump having an impeller shaft which is axially movable upon rotation so as to open an annular sealing passage around the shaft, the shaft being driven by a driving sleeve which is axially non-movable, resiliently-deformable means are provided for both transmitting the driving torque and urging the shaft into the sealing position. Leakage is prevented when the pump is stationary by a rotary member 55 which is pressed into sealing engagement with a stationary ring 58. On rotation, centrifugal governor weights 69, 70, which are pivoted on the impeller shaft 42, swing outwards and react upon a flange 39 carried by the driving sleeve 36 so as to move the shaft 42 to the left against the action of laminated coupling springs 78, 79. The sealing members 55, 58 are thereby separated, and leakage is opposed by auxiliary vanes 49, assisted by a labyrinth gland 53. The vanes 49 are longer than the main vanes 48. Leakage is drained through a spout 59a. Bushings 40, 41 between the sleeve 36 and shaft 42 are of brass. impregnated wood or composition.
Patent GB-441635-A (GB)
Title: An improved sterilising chest
IPC: A61L2/06
Filed: 1934-08-07
Abstract: 441,635. Hinges. JONES, T. M., 39, Fox Hollies Road, Acocks Green, Birmingham, and MARTIN'S CULTIVATOR CO., Ltd., Lincolnshire Iron Works, Ryhall Road, Stamford, Lincolnshire. Aug. 7, 1934, No. 22851. [Class 65 (ii)] [See also Groups VI and XVII] The pressureresisting door of a steam sterilizing- chest is connected to the chest by means of pivots engaging in channels which project beyond the part to which they are fixed and are widened and closed at one end. The pivots may be on the chest and the channels on the door, or vice versa, and the door may be arranged to slide, when opened, over the top, or to one side of the chest. In the form shown, the door b carries channels c at each vertical side. The channels are widened and closed at the ends f and are closed by bolts or screws g at the other ends. Arms i secured to the sides of the chest a carry pivots j engaging the channels c. The pivots are located in front of the chest and slightly higher than the chest, but not over its top. When closed the door is held in place by clamps e.
Patent GB-735269-A (GB)
Title: Improvements in or relating to a digging device
IPC: E21B11/06
Filed: 1953-08-20
Abstract: 735,269. Boring earth and rock. STRAITIFF, D. E. Aug. 20, 1953, No. 22960/53. Class 85. A digging device includes a plurality of endless chains extending longitudinally of the device, and provided with digging teeth, the chains at one end being trained over coaxially-aligned sprockets, and one of the chains extending beyond the others to provide space for a gear drive mechanism which is restricted laterally to pass into the hole cut by the chains. Fig. 1 shows the upper part, Fig. 2 the intermediate part, and Fig. 3 the lower part of a well-digging device. A cutting head 12 at the lower end carries coaxial sprockets 13, 14, 15 engaging endless chains 23, 22, 21, 20 engaged respectively by sprockets 16, 17, 18, 19. Sprockets 16 and 17 are driven in opposite directions by means of bevel gearing 59 and spur gearing 52, 54 from a vertical drive shaft 60 connected to the lower end of the drill string 11  through a connector element 67, and a shock absorbing device comprising telescopic members 26, 27 and a compression spring 28. 18 and 19 are idler sprockets co-operating with a part 14b of the sprocket 14, which is double, and the sprocket 15, so that the outer endless chains 23, 20 move in one direction and the inner chains 21, 22 move in the opposite direction. The links of the chains are each provided with hard digging teeth. The tension of the chains may be adjusted. The interior of the device is hollow for the supply of liquid which removes the cuttings up through the annular space in the well hole surrounding the device. Sealing means are provided for preventing the liquid reaching the bearings which may be ball bearings or fibre bearings. To resist the tendency of the frame to turn in the opposite direction to the direction of rotation of the drill string, shoes 13a Fig. 9, may be provided at vertically-spaced intervals on the frame assembly between the cutting head and the lower idler sprocket. These shoes are mounted on diagonallyopposite portions of the frame assembly and on the slack sides of the digging chains 20 and 23.
Patent GB-933405-A (GB)
Title: Hydrated magnesium aluminate
Inventor: SCHENCK REMSEN TEN EYCK
IPC: C01F7/162
Filed: 1960-07-01
Abstract: Hydrated magnesium aluminate containing bound sulphate, of formula 2MgO.2Al2O3.SO3 is prepared by mixing an alkali metal aluminate solution with magnesium sulphate solution in proportions of at least 1/2 gram atom of magnesium per gram atom of aluminium whilst adding an acid which forms a soluble magnesium salt, such as sulphuric, acetic or hydrochloric acid, the addition of the aluminate and acid being such that a pH of 6-10 is maintained.  The precipitated product may be dried and ground and employed as an antacid (see Group VI).ALSO:A hydrated magnesium aluminate containing bound sulphate, of formula 2MgO.2Al2O3.SO3 (see Group III) is employed as an antacid in 5-grain tablets with sugar or dextrin. It may also be employed in association with analgesics which as a side effect, irritate the gastric mucosa.  Reference is made to 5-grain aspirin tablets containing 2-3 grains of the hydrated magnesium aluminate containing bound sulphate.
Patent GB-840439-A (GB)
Title: Electro-magnetically actuated fluid flow control valve
IPC: F16K31/10
Filed: 1957-07-22
Abstract: 840,439. Electromagnetically actuated valves. DUBOIS, R. C. July 22, 1957 [July 23, 1956; Feb. 12, 1957], No. 23085/57. Class 135. A valve having at least one closure member 2a operated by an electromagnet and integral with two pistons 3, 4, the force of fluid pressures on the inner faces of which substantially balances that on each side of the valve member, is characterized by a spring 9 holding the valve member, when the electromagnet is not excited, in a first position (shown) and, when the electromagnet is excited, to the supplementary action of a counter-pressure spring 11 which maintains the valve member in a second position. In Fig. 1 the armature 7 of the electromagnet is slidably mounted on the control rod 2 of the valve member and carries a yoke 10 which holds the counter pressure spring 11 against a boss 14 on the end of the control rod; when the armature is attracted to the magnet the movement of the armature, being greater than the movement of the valve member between its operative positions, causes the spring 11 to contract and overcome the action of spring 9 to move the valve member to its second operative position. In Fig. 5 two valve members are arranged to close in series and are actuated through a rocking lever 20 and control rod 2 by an armature 23 slidable within the electromagnet. The tension of the spring 11 may be adjusted by means of a screwed plug 28. The valve member may be adjusted to positions intermediate its extreme positions by varying the electromagnet current. In addition an electromagnet may be provided at each end of the valve member and locking means may be provided to hold the valve member in an operative position when the current is cut off.