baber/WOPTO huggingface dataset:
Patent GB-751591-A (GB)
Title: Improvements in or relating to devices for propelling flowable substances
Inventor: WIBAULT MICHEL
IPC: B64C11/00
Filed: 1952-02-19
Abstract: 751,591. Propelling aircraft and ships. VIBRANE CORPORATION. Feb. 13, 1953 [Feb. 19, 1952 ; March 11, 1952], Nos. 4411/52 and 6345/52. Classes 4 and 114. [Also in Groups XXVIII and XXX] A device for propelling a flowable substance comprises a flexible member in contact with the substance and means for effecting displacement of a portion of the member alternately in opposite directions out of the plane of the member to produce undulations along the member from the portion toward a free edge thereof, thus propelling the substance swept by said undulations, the flexible member being flaccid and having substantially no resistance to the generation of the undulatory motion and the distance between the displaced portion and the free edge of the member is at least one half of the wavelength of the undulations. The device may be used for the propulsion of ships or aircraft. Fig. 6 shows a member 31 in which the leading edge is wrapped around a shaft 29 fitted with a radial member 32 which is oscillated; several members may be arranged parallel to each other. Reinforcements may be arranged transversely of the member to provide strengthening. The range of the oscillations of the member 32 may be varied to vary the angle of the neutral axis of the undulations whereby, in the case of propelling aircraft, lift may be provided. In the arrangement shown in Fig. 9, the member is in the form of a cylinder 49, the leading edge being secured to a ring 51 carrying lever devices 55 oscillated by a reciprocating member 53. In an alternative form, the leading edge is attached to a ring, and a ring that can be expanded and contracted is located a short distance from the leading edge.
Patent GB-402031-A (GB)
Title: Improvements in or relating to coupling arrangements for synchronous machines, and piston engine and the like
IPC: H02K7/02
Filed: 1932-02-15
Abstract: 402,031. Driving - arrangements. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Feb. 15, 1932, No. 4418. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 21, 1932]. [Class 35.] A synchronous generator or motor g driven by a piston engine a is provided with a flywheel s connected to it by a flexible coupling f and placed on the side of the generator remote from the motor a. The flywheel may be replaced by the rotor of a second generator.
Patent GB-103389-A (GB)
Title: Improvements in Lens Grinding Machinery.
Inventor: TRAVIS WALTER JAMES
IPC: B24B13/02
Filed: 1916-03-27
Abstract: 103,389. Travis, W. J., and Morgan. W. C. March 27. 1916. Lenses, grinding and polishing.-In machines for grinding lenses, in which the lens is moved to and fro over a semicylindrical concave or convex grinding-bed, an oscillating motion is imparted to the grinding-bed. The end plates q of the bed are formed with trunnions supported in bearings; one of the trunnions carries a balance weight, the other a worm-wheel in gear with a worm o on a shaft b driven alternately in opposite directions by an open and crossed belt reversing-gear. The beltshifter rod m is operated by a lever k engaging, by means of an internal cam, with a pin on a worm-wheel f, which is in gear with a worm formed on a sleeve extension of the loose pulley c<2>, which receives a belt wider than the fast pulley c', so that it is always in motion. The rod m is connected to the lever k by a finger l, which may be turned down to engage a notch in the head of the arm, or turned back to rest upon the V-surface at the top of the bracket g. This bracket carries the rod m, the spindle of the worm-wheel f, and the pivot of the lever k; it is supported on a sleeve h fitting over the shaft b. The grinding-bed may be secured to the end plates by means of inter-engaging ribs and grooves, and bolts or studs passing through slots in the end plates.
Patent GB-456097-A (GB)
Title: Grinding wheels and methods of making the same
IPC: B24D18/00
Filed: 1936-02-14
Abstract: 456,097. Grinding-wheels. NORTON GRINDING WHEEL CO., Ltd., Welwyn Garden City. Feb. 14, 1936, No. 4485. Convention date, Feb. 14, 1935. [Class 60] A grinding - wheel comprises an outer annular abrasive zone 10 of diamond grains with a resinoid bond and an inner zone 12 integral with it made of a resinoid composition with a granular filler, the volume percentages of the grains in the two zones being substantially equal and the materials selected so that both zones have substantially the same coefficients of shrinkage during the maturation of the resinoid and the subsequent cooling. Warping after manufacture is thus avoided. For example, the outer and inner zones may contain respectively 50 per cent by volume of diamond and silicon carbide grains, and 50 per cent by volume of phenolic resinoid bond in each case. The wheels may be made by first moulding the central body without completely maturing the resinoid, placing it in a mould of a size to form the complete wheel, packing the mixture of diamond grains and resinoid around the central body, and "hot-pressing" the whole. Alternatively, the two mixtures may be filled into the mould, a metal ring separating them during filling and being removed before pressing.
Patent GB-779943-A (GB)
Title: Improvements relating to respiratory masks
Inventor: GABB JOHN ESCOTT
IPC: A62B18/08
Filed: 1954-02-16
Abstract: 779,943. Respiratory masks. BRITISH OVERSEAS AIRWAYS CORPORATION. Feb. 10, 1955 [Feb. 16, 1954; July 27, 1954], Nos. 4552/54 and 21936/54. Class 81(2) A respiratory mask is held against the face by having at each side a toggle composed of two pivoted links extending forwards from points of attachment to the farepiece and a support on the wearer's head respectively. relative movement between the links being limited by a stop which prevents breaking of the toggle by downward movement of the links but allows the toggle to be broken by upward movement of the lower end of the links to detach the mask from the face. The facepiece 1 is secured to a head harness comprising earpieces 16 and flexible head bands 25, by links, one pair of links being in the. form of a U-shaped rod 7 hinged at its ends to brackets 6 on the facepiece 1 and passing through a sleeve member 9 through which a second U-shaped rod 11 forming the second pair of links also passes. The ends of the second U-shaped rod 11 are secured by eyes 13 to spring catches 14 on attachment plates 15 rotatable on the earpieces 16. A turnbuckle 12 is provided near each end of the second rod 11. An earphone 19 is provided on each earpiece 16. A counterpressure band 28 passes across the back of head between the earpieces 16. A microphone 3 is provided in the facepiece 1. A second microphone 22 rotatably secured to one earpiece is used when the facepiece 1 is not in use. The facepiece 1 falls away from the face when the toggle is broken by pushing the sleeve 9 past its dead-centre position. Microphone and earphone leads 29 are connected with one earpiece and a lead 30 runs from the earpiece to the microphones 3, 22. Plugs 32, 34 alternatively connect either microphone with the earpiece. In an alternative construction the sleeve 9, Fig. 3, is replaced by a short connecting member 41 having a finger piece and one U-shaped rod 43 is hinged to a plastic support 45 for a moulded rubber facepiece 46. The connecting member 41 may be arranged in two alternative positions so that two alternative pressures are exerted on the facepiece by the toggle linkage. In an alternative arrangement the sleeve 9, Fig. 6, or short connecting member 41 is replaced by two members 50, 51 through each of which a U-shaped rod passes. A shaft 55 having a helical groove 56 is journalled in these members 50, 51 and a pin 57 in one member 50 is moved along the groove 86 as required to vary the pressure applied to the facepiece.
Patent GB-693625-A (GB)
Title: Method and arrangement for the continuous passage of a metal strip or sheet through a pair of rolls
Inventor: WLEUGEL JOHN
IPC: B05C9/08
Filed: 1950-02-22
Abstract: 693,625. Rolling. ALUMINIUM LABORATORIES, Ltd. Feb. 22, 1950 [Feb. 22, 1949], No. 4612/50. Class 83 (iv). [Also in Group VIII] Pairs of rolls for embossing, lacquering, &c., continuous metal sheets or strip are positively separated automatically in response to means for detecting momentary increases in thickness. The lower roll 3, Fig. 1, of a roll pair 3, 4 is lowered immediately prior to, a joint 2 reaching the roll-pass through means controlled by a feeler roller 6 mounted in front of the roll pair and adapted to close an electrical time relay 8. The roll 3, Fig. 3, driven by a sprocket 25, is freely rotatable on a shaft 10 and is lowered by rotation of the shaft 10 which has eccentric trunnions 11 on each end and normally holds, the roll 3 in the uppermost position in correct engagement with the upper roll 4. The shaft 10 is rotated by a lever 12 fixed on the shaft by a pin 15 and carrying a pawl 13, Fig. 2, adapted to engage a ratchet-wheel 14 which is freely rotatable on an extension 16 of the shaft and driven through a sprocket 17. An armature 19 of an electromagnet 20 mounted on the machine frame is normally urged by a spring 26 to engage the pawl 13 and hold it out of engagement with the rotating ratchet-wheel 14, but when the magnet 20 is energized by the relay 8 the pawl is released and urged against the ratchet-wheel by a spring 23 so that the arm 12 and shaft 10 are rotated to first lower and then raise the roller 3. Before one revolution of the shaft 10 is completed the relay 8 automatically interrupts the current to the magnet 20 and releases the armature 19 which intercepts the pawl 13 and disengages it from the ratchet-wheel 14 when the shaft 10 completes one revolution and brings the roller 3 back to its normal working position.
Patent GB-490599-A (GB)
Title: Improvements in and relating to visual indicating and measuring devices for use with echo-sounding systems and for like chronoscopic applications
IPC: G01S1/72
Filed: 1937-02-16
Abstract: 490,599. Echo - sounding apparatus. RICKETS, W. J. Feb. 16, 1937, No. 4630. [Class 118 (ii)] The interval between the emission of the primary sound and the receipt of the echo is measured by a cathode-ray oscillograph in which, by means of a pair of deflecting magnets 4a, 4b rotated by a motor 5, the cathode beam is caused to trace a circular path on the fluorescent screen 15. At an appropriate point of the rotation, the sound emitter 19 operates over brushes 17, 18, and at the same time an impulse is transmitted to the magnets 4a, 4b, or alternatively to conical plates 21a, 21b, to produce an increased deflection of the beam. This action is repeated on the receipt of the echo by the receiver 20, and the distance between the two indications is read on a scale, which may be adjustable to bring the zero to the first indication. The screen is preferably such that the trace persists -for one revolution. The radius of the trace may be varied by means of a rheostat 14 in the circuit of the deflecting magnets.
Patent GB-465377-A (GB)
Title: Improvements relating to joints for grippers for use on looms, and for other hinged articles
IPC: D03D39/08
Filed: 1936-02-17
Abstract: 465,377. Pivots. EDMONDS, Ltd., G., and EDMONDS, H. Feb. 17, 1936, No. 4738. [Class 65 (ii)] A pivot for a pair of members 1, 2 such as the jaws of a gripper for a loom comprises a circular or disc-like part or head 8 having an inclined or undercut edge and engaging an aperture in one of the members (1) so as to form a pivot about which this member can turn, the part 8 being attached to the other member (2) by one or more projections or parts disposed away from, or set outwards of, the centre of the part 8, so that tilting of the parts is minimized. In the form shown, the part 8 is formed with two projections 11 which are passed through apertures in the member 2 and riveted over; but more than two such projections may be used, or a single projection extending along a diameter of the part 8 ; the projections may be formed on the member 2 to engage apertures in the part 8, or may be replaced by rivets through holes in both parts 2, 8. The part 8 is shown formed with a hole 9 which registers with a hole in the member 2 to receive a pin to facilitate assembly of the joint ; alternatively, the part 8 may be formed with a pin engaging the hole in member 2.
Patent GB-826175-A (GB)
Title: Elevator entrance sills
IPC: B66B13/30
Filed: 1957-02-12
Abstract: 826,175. Sliding doors. OTIS ELEVATOR CO. Feb. 12, 1957 [Feb. 29, 1956], No. 4746/57. Class 20(3) [Also in Group XXX] In an elevator installation, each hoistway entrance, or the elevator car itself, is provided with a sill for the sliding doors which is adjustable. As applied to a hoistway entrance in which a pair of centre opening doors 30, Fig. 1, are suspended from a conventional overhead hanger track which is supported by a pair of vertical angle members 31, the sill is formed as an elongated strip having a grooved slot 8, Fig. 4, in its lower surface, for adjustably attaching the sill to the floor, and a grooved slot 7 in its upper surface for adjustably attaching the angle members 31. The lower end of each member 31 is welded to one leg of an angle bracket 32, the other leg receiving the shank of a bolt 34 whose head is confined within the slot 7. At intervals along the sill, the slot 8 receives the heads of bolts 16 which are fastened by nuts 15 to portions 11 of mounting brackets secured at 14 to the rough floor 4. Each door jamb 17 is secured to an angle bracket 27, Fig. 5, having a pair of slots 26 to receive bolts 28 which also pass through apertures 25 in a supporting bracket 20, the latter being fastened to the sill 6 by a bolt 24 whose head is engaged in the slot 8. Guides 35 on the doors 30 enter the slot 7. The finished flooring 5 may be flush with the upper surface of the sill 6.
Patent GB-495862-A (GB)
Title: Improvements in or relating to induction furnaces
IPC: H05B6/22
Filed: 1937-02-17
Abstract: 495,862. Electric induction furnaces. VEREINIGTE EDELSTAHL AKT. - GES. Feb. 17, 1937, Nos. 4763, 4764, and 4765. Void. Convention dates, Feb. 17, 1936, March 21, 1936, and March 21, 1936. [Class 39 (iii)] A cooling jacket 10 is arranged between the coil 2 and the crucible 4. The jacket may be subdivided longitudinally or may consist of a hollow coil of few turns. A further cooling jacket may be arranged outside the coil 2. Polyphase furnaces with helical and flat coils are described. With flat coils the cooling jacket is a tube of spiral or grid form.
Patent GB-1452924-A (GB)
Title: Prosthetic devices
IPC: A61F2/38
Filed: 1973-01-31
Abstract: 1452924 Endoprosthetic joints NATIONAL RESEARCH DEVELOPMENT CORP 29 Jan 1974 [31 Jan 1973] 4837/73 Heading A5R [Also in Divisions El and E2] An endoprosthetic elbow joint comprises an ulnar component 10, Fig. 2, including a bearing member 11 having a generally saddle-shaped bearing surface 13, and a humeral component 20, Fig. 4, comprising a bearing member 22 with a bearing surface 23 attached to a bifurcated member 21, the bearing surface 13 being part of a surface of revolution, of concave circumferential form and convex axial form, and the bearing surface 23 being a surface of revolution with its axis extending between the arm ends of member 21 and of convex circumferential form, with greater angular extent than that of surface 13, and of concave axial form, so as to receive member 11 in articulatory engagement. Bearing member 22 is preferably of metal. Bearing member 11 may be of metal or preferably of plastics material. The bearing surface 13 may have a circumferential angular extent of about 180, or slightly more if a snap-fit between the two components is required. The extremities of the member 11 are rounded off both in the plane of Fig. 2 and at right angles to it, Fig. 3 (not shown). Bearing member 11 is attached to a metallic platform member 12 by means of a dovetail section keyway 14 in member 12 which engages with a key 15 on member 11. Thus the angular position of member 11 with respect to member 12 may be adjusted before the members are cemented together. Fixture of the bearing member 11 to the platform member 12 is facilitated by a slot 17 in member 12 which fills with cement which traps a stud 18 on member 11. A rib 16, or other relief configuration, may be provided to aid fixture of member 12 to the bone with cement. Similarly humeral member 21 may be provided with ribs 24, or with grooves or studs. Alternatively intramedullary stems, as shown dotted in Figs. 2 and 4, may be employed for fixing the components to the ulna and humerus respectively.
Patent GB-605937-A (GB)
Title: Improvements in and relating to electric control systems
IPC: H02J3/18
Filed: 1944-03-16
Abstract: 605,937. Automatic control of power factor. BRITISH THOMSON-HOUSTON CO., Ltd. March 16, 1944, No. 4895. Convention date, March 20, 1943. [Class 38 (iv)] The power factor of a line 1 supplying a load 3 is maintained within predetermined limits by electronic relays which detect deviation of the power factor from the limits and automatically apply correction by connecting or disconnecting the capacitance to or from the line. The relay circuit is such that, irrespective of the power factor, conduction through the relay is initiated or tends to be initiated, at the same point in each cycle of the supply voltage, the power factor obtaining determining whether or not conduction actually occurs. As shown, relay 19 which corrects for lagging line current comprises a gas, or vapour-filled discharge tube 27. Its anode-cathode circuit is energized through transformer 21 by a voltage in phase with two of the lines and its control grid 31 and shield 30 receive hold-off bias from the lower section of the secondary of the transformer. A control bias voltage, in phase with and derived from the current in the third line through transformers 44, 41 and resistor 441 is also applied to grid 31, this bias, under unity power factor conditions, thus being in quadrature with the hold-off bias and approaching phase opposition therewith when the line current lags by 90 degrees. An in-phase peak voltage provided by a transformer 47 in the shield circuit is inadequate to fire the tube under normal conditions, but does so when the line current lags by a predetermined amount due to reduction of effective bias on grid 31 by the phase change of control bias. Subject to delay by a timing circuit 52, conduction of tube 27 energizes winding 17 of a reversible motor 11 which drives a switching segment 12 for effecting the successive connection of condensers such as 4, 5 to the line, the tube again becoming non-conducting and the motor stopping when sufficient capacity has been added to restore the power factor. A relay 191, similar to 19 but becoming conducting with a leading line current and associated with a timing circuit 52<SP>1</SP> effects energization of the reversing winding 18 of the motor to remove capacity from the line under conditions of excessive leading line current. In a modified arrangement relays 19, 191 both " pick-up " on lagging line current, but at different settings and motor 11 is dispensed with, the condensers 4, 5 being successively switched in directly by the delay circuits. The latter have in this case different time constants. The timing out of the delay circuits automatically modifies the hold-off bias on relays 19, 19<SP>1</SP> so that these do not-drop out until the line current becomes leading, the drop out angles for the two relays being different.
Patent GB-829704-A (GB)
Title: New light-sensitive compositions for use in the manufacture of photographic materials
Inventor: GAZZARD EDWARD GEORGE
IPC: G03C1/38
Filed: 1957-02-13
Abstract: Polystyrene polysulphon - (p - o  - cyanacetylanilido)-polysulphonic acid is prepared by sulphonating polystyrene in ethylene dichloride with sulphuric acid, treating the polysulphonic acid thus obtained with chlorosulphonic acid, and reacting the chlorosulpho-groups thus introduced with p-o -cyanacetylaniline.  Specifications 479,838, 593,088 and 747,589 also are referred to.
Patent GB-1248901-A (GB)
Title: Improvements relating to oceanographic survey devices
Inventor: STARKEY BERTRAND JULIAN
IPC: B63B22/06
Filed: 1967-08-19
Abstract: 1,248,901. Buoys. E.M.I. Ltd. 18 Nov., 1968 [19 Aug., 1967; 31 Jan., 1968], Nos. 38318/67 and 4906/68. Heading B7A. [Also in Division G1] An oceanographic survey device 1 to measure and record submarine pressure, temperature and conductivity (see Heading G1N) comprises an anchor 2 and a buoy 3. The buoy includes a buoyant chamber 10 divided into upper and lower compartments by a bulkhead 11 and a hermetically sealing cover 14. Inside the former are carried measuring and recording instruments and a motor control circuit 12 while a battery 13 is mounted inside the latter. At the lower external end of the buoy is a freeflooding fairing 21 enclosing an electric motor 18, winch 17 and gear train 19, a mooring cable 4 being guided and supported by a fairlead 22. The dead-weight anchor produces a net anchoring force of 70-90 pounds and comprises a steel hemisphere in which is a winch drum 25, on bearings 24, carrying a mooring cable 4 which is guided by a fairlead 26. Prior to launching the fairleads 22, 26 are maintained in contact by a manacle 28 kept in tension by three struts 29. The manacle 28 is released at a desired depth by a pressure-sensitive plunger (not shown) when the struts fall free, the anchor sinks to the sea bed and the buoy floats at a depth of about 100 metres. The buoy is driven upwards once daily to a depth of 5 metres and returned again to its mooring station by the control circuits; measurements and recordings being made the while it moves.
Patent GB-1489554-A (GB)
Title: Method for classifying timber
IPC: G01N22/00
Filed: 1976-02-09
Abstract: 1489554 Classifying timber using radio waves INSINOORITOIMISTO INNOTEC OY 9 Feb 1976 [14 Feb 1975 19 Nov 1975] 04910/76 Heading G1N Timber is classified by detecting knots in it by determining the phase shift of a micro-wave signal passed through it. Energy from an r.f. generator 2 preferably having a frequency of 10 GHz is passed  via waveguide 3 to a transmitting antenna 4, having an aperture which is short in the direction of travel of the timber but is equal laterally to the width of the timber. A receiving antenna 5 connects to a diode detector 6. There may be pairs of antennae operating at different frequencies whereby the effects of moisture or of movements of the timber towards either antenna may be compensated. The micro-wave signal may be frequency or amplitude modulated. The intensity or type of polarization of the radiation can be selected taking into consideration the direction in which timber is to be measured or growth direction. The signal received when gaps between timber lengths are present between the antennae may be used for calibration.
Patent GB-956678-A (GB)
Title: Improvements in or relating to processes for casting iron
IPC: C21C1/10
Filed: 1961-02-09
Abstract: Molten cast iron is passed through a vacuum and then oxygenated.  The metal may fall into a ladle contained in a vacuum chamber to remove occluded gases and then be oxygenated by adding oxygen as gas or by the addition of a substance, e.g. iron oxide, which will liberate oxygen.  It is stated that the process retains the strength of the cast iron and reduces the brittleness.