baber/WOPTO huggingface dataset:
Patent GB-299599-A (GB)
Title: An improved leather and process for obtaining same
IPC: C14C3/28
Filed: 1927-10-11
Abstract: 299,599. Ehrenreich, A. Oct. 11, 1927. Goldbeaters' skin and parchment.-Leather is obtained by tanning the great intestine and wall of the stomach of cartilaginous fishes such as sharks. The raw material is washed and the veins caused to disappear by compression or extracting, limed for two to four days with the addition of a carbolate and immersed in a tanning liquid and then in a bath containing one per cent commercial hydrochloric acid and not less than four per cent sodium chloride. The tanning is then completed in a basic chrome alum bath or by a vegetable tanning such as by quebracho or sumach. Or the final tanning may be begun with chrome and finished with vegetable tanning agents. The tanning may also be carried out with formaldehyde or formaldehyde and alum. In the production of drum skins the great intestines are ulled for twenty four hours with fish (preferably shark) oil and sea salt and the skins so obtained hung in the open air.
Patent GB-865051-A (GB)
Title: An electromagnetic torsional transducer
IPC: G01L1/12
Filed: 1958-08-22
Abstract: 865,051. Electric measuring systems. VYZKUMNY A ZKUSEBNI LETECKY USTAV. Aug. 22, 1958 [Aug. 24, 1957], No. 27057/58. Class 40 (1). Apparatus for comparing two forces or torques comprises means for applying the forces to twist a ferromagnetic shaft subjected to a rotating magnetic field, whereby voltages are induced in coils surrounding the shaft, which voltages are compared to obtain the ratio of the applied forces or torques. As shown (Fig. 1), a ferromagnetic rod or tube 5 is centrally located in two ferromagnetic cylindrical casings 8 whose end-plates 9 are secured to the rod 5. The open ends of the casings 8 are fitted with metal flanges 10, separated by an insulator 11. The rod 5 is divided into four equal parts by arms 6, 7 which protrude beyond the casings 8, the two arms 7 being mechanically linked, and the spaces between the rod 5 and the casings 8 are occupied by four similar coils 1, 2, 3, 4. Coils 1, 4 and also coils 2, 3 are connected in series opposition, the two pairs of coils also being connected in series through a potentiometer 16 (Fig. 4), with the outer ends of coils 1, 3 connected to a balancing potentiometer 19. An A.C. voltage is connected to the flanges 10 of the casings 8, producing a rotating magnetic field inside the casings, which is distorted when a first torque MK 1  is applied to arms 7 and a second torque MK 2 , in the opposite direction, is applied to arm 6, producing induced voltages in the coils 1-4 and an unbalance voltage between the sliders of potentiometers 16, 19 which is reduced to zero by moving the slider of potentiometer 19 either manually, or automatically via amplifier 17 and motor 18. It is shown that at balance the distance the slider of potentiometer 19 moves from the centre is proportional to the ratio of the applied torques MK 1 , MK 2 . The torque MK 2  applied to the central arm 6 may have a fixed known value obtained by adjustment of bolts attached to the casings 8.
Patent GB-715188-A (GB)
Title: An improved garment hanger
IPC: A47G25/66
Filed: 1952-10-30
Abstract: 715,188. Garment hangers. HAZLEHURST, H. E. Oct. 28, 1953 [Oct. 30, 1952], No. 27259/52. Class 52(5) [Also in Group XXV] A skirt or like hanger comprises a shoulder support 5 to which is attached a length of wire 7b with downwardly cranked end portions 7c. On each of these portions 7c is mounted a clip 8 comprising two pivotally interconnected parts spring loaded by a substantially V-shaped spring 11. Each clip is axially slidable on the wire and is pressed outwardly by a spring 9. A length of wire 10 strengthens the wire 7b and limits rotation of the clips 8. Specification 715,189 is referred to.
Patent GB-1360162-A (GB)
Title: Signal-to-noise detector for non-stabilised doppler radar
IPC: G01S13/60
Filed: 1972-06-12
Abstract: 1360162 Radar SINGER CO 12 June 1972 [30 Aug 1971] 27290/72 Heading H4D A signal to noise ratio detector for use in the frequency tracker of a Doppler radar has first means which samples noise over the entire pass band of the frequency tracker input except for a range in the vicinity of the tracking frequency of a local oscillator second means for sampling the Doppler returns in the said range, and detector means coupled to the first and second means for comparing the signals from both said means to produce an output signal when the signal to noise ratio exceeds a threshold. The detector 42 is described in conjunction with a switched multi-beam Doppler radar, the Doppler inputs corresponding to the beams arriving in sequence at emitter follower 10. Capacitors and switches 31, 51 are used to accommodate tracking and signal to noise detection of each beam separately. The circuitry of Fig. 1, apart from the S/N detector, controls oscillator 32 so that it tracks the centre frequency of the Doppler return for each beam. The S/N detector receives from filter 38, a noise sample obtained from the entire pass band input except for a range around the tracking frequency (see shaded area of Fig. 6). The detector also receives a sample of Doppler returns and noise obtained from the above range. These are fed to amplifier 50 which senses if the noise level is above the Doppler returns. Fig. 6 illustrates the situation wherein the tracker has erroneously locked on to a side lobe or unwanted beam. The required main lobe signal, which is greater than the side lobe therefore adds to the noise signal. The noise level is therefore above the side lobe level and signal is given to prevent the tracker from locking on to the side lobe.
Patent GB-1104921-A (GB)
Title: Improvements in discharge pipes for flushing cisterns
Inventor: SPEDDING IAN MAXWELL
IPC: E03D1/08
Filed: 1963-07-11
Abstract: 1,104,921. Water-waste-preventing cisterns. CLAIMCOM PATENTS Ltd. 8, Oct., 1964 [11, July, 1963], No.27450/63. Heading E1C. A flushing cistern discharge pipe 32 has a constriction 33 in its bore and is flared above and below the constriction, the upper flaring being shorter than the lower. As shown the construction is integral, but may be in the form of an insert in a straight pipe. The bore may be substantially that of a theoretical vena contracta.
Patent GB-226328-A (GB)
Title: Improvements in or connected with a device for letting down the mica on a commutator of an electric machine
IPC: H01R43/14
Filed: 1923-11-02
Abstract: 226,328. Pape, F., and Bennison, J. H. Nov. 2, 1923. Slotting.-An appliance for cutting down the insulation between commutator bars comprises one or more adjustable cutters 7 mounted on a metal support which is moved by hand on guide wheels 3. A sliding guide-blade may replace the wheels.
Patent GB-519430-A (GB)
Title: Improvements in the control of two concomitant devices
IPC: B64C25/22
Filed: 1938-09-22
Abstract: 519,430. Hydraulic machines. MERCIER, J. Sept. 22, 1938, No. 27626. Convention date, Sept. 27, 1937. [Class 69 (ii)] In hydraulic apparatus for simultaneously controlling two movable parts, such as aircraft wings or vehicle brakes, a distributing device comprises a cylinder 1 with a conduit 3 for the admission of pressure fluid and with conduits 4, 5 leading to the two parts to be moved, a slide valve 2 with two pistons 6, centering springs 51 between the cylinder and collars 50 on the valve, and a lever 53 pivoted at 52 to the valve and at 54, 54<1> to links 55, 56 connected to the two parts to be moved. When the latter move in a predetermined relationship, the lever 53 rocks about the pivot 52 and does not affect the valve 2. When this relationship is upset, one of the links 55, 56 moves quicker than the other, the pivot 52 is displaced, and the valve 2 is moved so that one of the pistons 6 closes one of the conduits 4, 5 to automatically brake the quicker moving part. The Specification as open to inspection under Sect. 91' comprises also the modification shown in Fig. 2 (Cancelled) according to which the valve 2 is connected to a piston 58 in a cylinder 59 which is connected by conduits 60, 60<1>, 61, 61<1> to cylinders 62, 62' containing pistons 63, 63' connected to the two parts to be moved ; in addition it states that the apparatus may control more than two movable parts. This subject-matter does not does not appear in the Specification as accepted.
Patent GB-1300209-A (GB)
Title: Camera including distance determining means
IPC: G03B13/20
Filed: 1971-06-14
Abstract: 1300209 Distance-determining means BELL & HOWELL CO 14 June 1971 [29 June 1970] 27686/71 Headings G2A, G2J A distance-determining mechanism comprises an arrangement 42, 46 which is balanced in a camera view-finder so that it remains in its balanced position as the camera tilts, and reads against a distance scale in the view-finder. When the camera is held with the view-finder at average eye level and inclined so that an indicator on the balancing member is aligned with the base of the subject being photographed, the indicator then reads directly against a distance scale. As shown, the balanced member comprises two beams 42, with a cross-hair indicator 46 connecting them at one end. At the other end of the beams are counterbalancing weights 48 having axles 44 which rest in bearings 32 in the walls of the view-finder housing 22. The arrangement is such that the beams can pivot about a horizontal axis 34 which is perpendicular to the optical axis 36 of the viewfinder. The balance is such that when the axis 36 is horizontal, the indicator 46 is below the axis. The front window 28 of the view-finder has a distance scale 50 marked along one edge. When the camera is tilted, the balanced member remains in its original position, so that indicator 46 appears to move relative to scale 50, and thus indicates the distance directly against the scale. A small mirror 58 on the housing reflects the focusing scale 18 on the objective lens 14, so that this scale is also visible in the view-finder.
Patent GB-799511-A (GB)
Title: Improvements in and relating to foundry moulds and cores
Inventor: RENNIE WILLIAM MURRAY OUDNEY
IPC: B22C3/00
Filed: 1955-09-29
Abstract: 799,511. Mould and core materials. IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 20, 1956 [Sept. 29, 1955], No. 27728/55. Class 83 (1). A carbonaceous coating, e.g. blacking or plumbago, for a mould or core is applied suspended in a liquid medium containing isopropylalcohol and up to 16 per cent by weight of water. The composition may include a resinous substance such as a urea- or phenol-formaldehyde resin, shellac, or wood rosin or mixtures thereof. After application, the composition is ignited to burn off the alcohol.
Patent GB-1063755-A (GB)
Title: Drive means for rollers of machines for treating moving webs of material
IPC: D21F7/02
Filed: 1964-07-06
Abstract: 1,063,755. Textile treating apparatus. C. A. MEIER-WINDHORST. July 6, 1964 [Aug. 3, 1963], No. 27730/64. Heading D1L. Drive means for driving conveyer rollers in a web treatment apparatus having two or more components presenting different drive resistances or requirements is characterized in that some or all of the rollers of the several components are driven from a common transmission shaft by means of elastic driving belts which differ in elastic characteristics according to the different drive resistances or requirements of the rollers of the respective components. In the embodiment shown a web of material 12 is conveyed through a smoothing calender 10 with two separate pairs of rollers 18 and through two embossing calenders 11 each with a pair of rollers 19. The common drive is shown at 13 and the rollers 18, 19 are driven therefrom by way of pulleys 14, 15 and resilient belts 16, 17. In another embodiment similar drive arrangements are applied to hydro-extracting squeeze rollers and guide rollers in full-width wash compartments where the web is accumulated in loops.
Patent GB-708231-A (GB)
Title: Improvements in and relating to wind tunnels
IPC: G01M9/04
Filed: 1952-11-04
Abstract: 708,231. Gas-turbine plant. AKT.-GES. FUR TECHNISCHE STUDIEN. Nov. 4, 1952 [Nov. 30, 1951], No. 27740/52. Class 110(3) [Also in Group XXXHI] The working medium supply for a wind tunnel is taken from a closed circuit gas turbine plant comprising at least one compressor and at least one turbine and to which heat is supplied from an outside source, at a point between the first compression stage and the inlet of the turbine and returned to the circuit at a point of lower pressure. The gas turbine plant shown comprises a compressor 12 which supplies a gaseous working medium to a turbine 15 through a heat exchanger 13 and heater 14. The exhaust from the turbine passes through the heat exchanger 13 back to the suction of the compressor 12. The working medium for the wind tunnel 18 is abstracted from the discharge of the compressor at the point 22 and returned to the suction side of the compressor at the point 23 by a compressor 19 driven by the gas turbine plant. The pressure level in the closed circuit may be varied by means of an auxiliary compressor feeding working medium into the circuit or a discharge valve. This allows the tunnel to be operated at different Reynolds numbers for the same Mach. No. The compressor 19 may be dispensed with and, if desired, the tunnel may be supplied with hot working medium by abstracting this medium after the heat exchanger 13. When the compressor 19 is employed, a conduit 25 and slide valve 24 may be provided to enable the compressor to be by-passed. To increase the range of operation of the wind tunnel, shut off valves may be incorporated in the supply conduit from the point 22 and return conduit to the point 23 and the two conduits connected by a by-pass pipe provided with a third shut ofl valve. The compressor 19 may then be used to circulate air through the wind tunnel in a circuit which is independent of the gas turbine plant. Air or gases such as carbon dioxide or argon, may be employed as the working medium. Coolers 16, 17, 20 and 21 may be provided.
Patent GB-482144-A (GB)
Title: Improvements in or relating to machines for breaking or granulating stone and like material
IPC: B02C13/09
Filed: 1936-10-13
Abstract: 482,144. Impact pulverizers. PARKER, Ltd., F., and PARKER, F. W. Oct. 13, 1936, No. 27780. [Class 59] Shields or protective pieces are detachably secured to a rotor in an oblique position in front of the hammers or other parts to be protected. As shown in Fig. 1, the beaters 3 are mounted on the disc 5 as described in Specification 408,032 and shields 10 are mounted in front of the hammers to protect parts of the hammer or carrying members from the impact of the material. The shields 10 are inclined and may be extended below the periphery of the disc at 20, Fig. 4. The plates may be secured by bolts or studs 12 to lugs 13 on the periphery. The shields may be flat and be secured by lugs which straddle the disc and are secured thereto by a bolt. Specifications 347,354 and 371,583 also are referred to.
Patent GB-503918-A (GB)
Title: Improved ball-valve for cisterns
IPC: F16K47/02
Filed: 1937-10-13
Abstract: 503,918. Float - actuated valves. BARCLAY, J. A. Oct. 13, 1937, No. 27783. [Class 135] For reducing the pressure of the supply and preventing noise a ball-float valve has a cylindrical block A of compressed wire gauze inserted in the valve inlet and a perforated outlet pipe B leading to, and along, the bottom of the tank.
Patent GB-1119768-A (GB)
Title: Method of preparation of pollucite and its application to the production of radioactive sources
Inventor: OLOMBEL ANDRE
IPC: C01B33/26
Filed: 1966-06-22
Abstract: Crystalline pollucite, Cs2O, Al2O3, 4SiO2, H2O is prepared by mixing colloidal aqueous silica with aqueous caesium and aluminium nitrates, evaporating to dryness and heating to below 1000 DEG  C. to decompose remaining nitrates and form an amorphous powder which is then compacted under a pressure of 2.5 tonnes per cm.2 and sintered at 1600 DEG  C.  In a modification, the calcination is at a temperature below 600 DEG  C. (instead of 1000 DEG  C.) and the sintering in two constant temperature stages at 970 DEG  C. and 1200 DEG  C. respectively. In this case, the calcined powder may be activated in a water vapour atmosphere at 100 DEG  C. for 15 to 30 minutes.  The powder may be ground to a mean particle size of 10m  before compacting and sintering.
Patent GB-152025-A (GB)
Title: Improvements in apparatus for preventing the stealing of motor-cars
IPC: B60R25/022
Filed: 1920-10-02
Abstract: 152,025. Hamon, M. A. Oct. 7, 1919, [Convention date]. Guarding against unauthorized use. - To prevent the unauthorized use of a motor-vehicle, the steering-wheel is locked by means of an arm D pivotally mounted on the body B and carrying a pivoted arm F or arms adapted to engage the rim H or a spoke of the steering-wheel, the arm being secured by a lock I.
Patent GB-254252-A (GB)
Title: Improvements in or relating to baling presses
IPC: B30B9/30
Filed: 1925-11-07
Abstract: 254,252. Canadian American Machinery Co., Ltd. June 24, 1925, [Convention date]. Baling-presses. - In a baling press in which a plunger b operates in the upper part of an upright compression chamber a and in successive down strokes compresses successively added material on top of previously added material, and in which rods B may be thrust through apertures in the sides of the chamber to hold the material M at the place to which the plunger compress it. the apertures are formed as vertical slots A, A<2> to permit the rods to move downwardly when the next charge M' of material is compressed in the chamber above them. The plunger operates with a constant stroke the lower limit of which is level with the upper ends of the slots. The chamber a and its hinged door a' are reinforced at the level of the lowermost position of the plunger by stiffeners A', A' which act as abutments to limit any upward movement of the rods B in the slots A, A<2> and channel members on the underside of the plunger guide the rods across the chamber. When a fresh charge of material is placed in the chamber above a compressed one held by the rods B, compression of the fresh charge displaces the rods downwardly and when the compression is complete, the rods are transferred to the top of the newly compressed charge of material. The plunger is provided with pinions c by which it is moved along and down L-shaped racks e the vertical portions d<1> of which are hinged and terminate in hooks adapted to swing the racks forwards as the plunger reaches its lowest position, the pinions c then engaging a rack opposite and being locked thereby.
Patent GB-1316771-A (GB)
Title: Sound reproducing system
IPC: H04R1/28
Filed: 1970-06-10
Abstract: 1316771 Loud-speakers S YANDO 10 June 1970 [19 June 1969] 28130/70 Headings H4J and H4X A loud-speaker (diagrammatically represented by a disc 16) Fig. 1, is mounted in an air-tight cabinet 10 in which a free piston 13 is sealingly mounted by an elastic membrane 14. Sound emitted from the free piston 13 augments that emitted by the loud-speaker 16 over a predetermined low frequency range. There may be several free pistons and these may resonate at different frequencies. A substantially rigid shell (not shown), substantially encloses the cabinet 10, has an opening adjacent the loudspeaker 16 to radiate the acoustic output of the system, and acts to augment the power output of the system over the low frequency range. Preferably the enclosed volume of air in the cabinet 10 is substantially isobaric over the low frequency range. A moving coil loudspeaker is used. In an alternative arrangement, the loudspeaker 316 Fig. 6, is sealingly mounted on a movable piston 313 forming a front cabinet wall which is sealed to the remainder of the cabinet 310 by an elastic membrane 314. In addition, a portion of the rear wall 325 of the cabinet may also be sealed by an elastic membrane 326. The mass of free piston 325 is then substantially equal to that of free piston 313 plus the magnetic structure and frame of the loudspeaker 316. The cross-sectional area of free piston 325 is substantially equal to that of free piston 313. The momenta of the pistons is thus equal but oppositely directed, thereby creating a dynamic balance which leaves the body of cabinet 310 quiescent and free of objectionable vibrations- The pistons resonate with the elastic stiffness of the dynamic system at one and the same frequency. The sealed cabinet 310 has standoffs 327 and is within an outer shell 328.
Patent GB-1202731-A (GB)
Title: High strength structural steel
IPC: C22C38/02
Filed: 1967-06-29
Abstract: 1,202,731. Altering physical properties. FORD MOTOR CO. Ltd. [FORDMOTOR CO.]. 29 June, 1967, No. 28143/67. Heading B3V. [Also in Division C7] A steel containing in percentage by weight C not more than 0À07 one or more of Ni, Mo, Cr, Mn, Si not more than 7 Al 0-0À15 Ti 0-0À2 V 0-0À5 optionally Nb 0À02-0À08 in which the total content of Ni, Mo, Cr and Mn does not exceed 6%, the content of Ni and/ or Mn is such that the transformation of austenite to massive martensite does not occur above 1300‹ F., and the content of chromium and/or molybdenum is such that no transformation of austenite to equiaxed ferrite occurs above the temperature at which the transformation to massive martensite occurs, is hot-worked to finish at a temperature sufficiently low to inhibit austenite grain growth during working and subsequent cooling and to provide a martensitic product having a yield strength of at least 80 k.s.i. and a, minimum impact value at - 40‹ F. of at least 40 ft. 1b. The steel may be hot-rolled at 1400-1775‹ F. followed by quenching, air-cooling or furnace cooling at a controlled rate; cold rolling may follow. The steel may also be used in the ascast form; it may then be normalized at 1800-2100‹ F.
Patent GB-891228-A (GB)
Title: Diapositive frame
IPC: G03B21/64
Filed: 1958-09-02
Abstract: 891,228. Transparency frames. RIEDEL, H. Sept. 2, 1958 [Sept. 3, 1957; March 25, 1958], No. 28175/58. Class 98(2). In a transparency frame in which cover-glasses are located in a frame member and secured by a cover member having runners engaging grooves in the frame member, the runners are resiliently inclined to the grooves so that the adjacent margins of the glasses are passed down by the overlying portions of the cover. As shown, when using two cover-glasses which are thinner than the average, only the outer longitudinal edge 30 of each runner 10 engages the groove in the frame member to exert pressure through overlying portion 29 on the film 31 and glasses. When thicker cover-glasses are used the overlying portions transverse to the runners may be bowed outwardly from the glasses. In another form, (Figs. 15-19, not shown) this tendency is overcome by giving the cover a cylindrical curvature in the opposite sense. A depression 33 enables catch 25 to be released by insertion of the finger-nail so that the cover may be slid off in the longitudinal direction of Fig. 11. The frame may be made of polystyrene having a titanium dioxide filter.
Patent GB-405403-A (GB)
Title: Improvements in or relating to steam traps
IPC: F16T1/26
Filed: 1932-10-10
Abstract: 405,403. Steam traps. HOLDEN & BROOKE, Ltd., and McNAIR, D. G., Sirius Works, West Gorton, Manchester. Oct. 10, 1932, No. 28186. [Class 64 (ii).] A steam trap of the bucket type receives condensate from an external chamber 8, from which it is adapted to be isolated unless there is an accumulation of condensate in the chamber 8. The bucket trap is similar to that described in Specification 314,645, [Class 64 (ii), Heating systems &c.], but the inlet to the trap 10 is connected by a passage 9 with a superposed chamber 8 which receives condensate through the inlet 3. Condensate only passes from the chamber 8 when full to the level of the float valve 11.