baber/WOPTO huggingface dataset:
Patent GB-1048471-A (GB)
Title: Improvements in electric motors with brushless commutation
Inventor: BURTON GEORGE ERNEST
IPC: H02K29/10
Filed: 1961-07-19
Abstract: 1,048,471. Commutation arrangements for dynamo-electric machines. MINISTER OF AVIATION. Oct. 19, 1962 [July 19, 1961], No. 26136/61. Heading H2A. A motor having a permanent magnet rotor M has the stator field windings commutated by means of light-sensitive devices, e.g. phototransistors, sequentially excited from a light source through a rotating shutter. Pairs of photo-transistors R +, R - ; B+, B-; G +, G - ; are supported in radial pairs spaced 120 degrees apart around the axis of the machine with the positive ones illuminated through slot P and the negative ones through slot N. As the shaft rotates the stator windings of the motor are connected in turn to the positive or negative supply lines depending on which transistor is illuminated, or effectively disconnected when neither transistor is illuminated, thus producing a rotating field vector. The transistors may either switch the stator windings directly or be used to actuate further high power electronic switches depending on the size of the motor.-The motor is readily reversible. Reference has been directed by the Comptroller to Specification 973,797.
Patent GB-1399477-A (GB)
Title: Shuttering spacer equipment
IPC: E04G17/07
Filed: 1972-06-05
Abstract: 1399477 Concrete shuttering spacer S BURGI 5 June 1972 [3 June 1971] 26159/72 Heading E1S A shuttering spacer comprises a flat tie 1 having a central portion 11 and end portions 12, 13 with the boundaries therebetween being weakened, e.g. by notches 14; securing means, e.g. wedges 4, for fastening the tie between opposed shuttering panels 21; and inserts 6 of iron salt-resistant material, e.g. synthetic resin, which extend between the panels 21 and the central tie portion 11 and each have a slot to receive the tie, the slot being just wide enough to receive the tie at the end of the slot away from the panel, but wider at the end adjacent the panel. In use, the inserts 6 form cavities in the concrete around the end tie portions 12, 13, whereby the end portions may be broken off at the weakened boundaries by a suitable lever tool, and the inserts 6 remaining in the concrete are plugged. The tie 1 may have stamped out formations 15, 16 which further weaken the tie at the boundaries and also provide abutments to engage the inserts 6. As shown, wedges 4 pass through slots 121 at the ends of the tie and bear through channelsection bars 3 against the panels 21.
Patent GB-305602-A (GB)
Title: Improvements in or relating to tanks, compartments, magazines, bunkers or containersfor inflammable or explosive liquids, or substances
IPC: B65D90/44
Filed: 1927-10-04
Abstract: 305,602. Laing, B., and Brand, J. J. C. Oct. 4, 1927. Fire-extinguishing by gases; fires, preventing in connection with containers for inflammable materials.-In the method of protecting inflammable materials from fire in which a dried, cooled, and cleaned, inert gas, such as the exhaust gas from an internal combustion engine, is admitted to the container in which the material is stored, the gas is passed to and from the container by pipe lines provided with valves, and is circulated continuously through the container above the material by means of a fan or blower. The volume of gas admitted may be in proportion to the quantity of material removed from the container. Specifications 15195/11 and 121,479 are referred to.
Patent GB-443649-A (GB)
Title: Improvements relating to revolving doors
IPC: E06B3/90
Filed: 1934-09-12
Abstract: 443,649. Hinges. ELLIOTT, C. A., Lamorna, Upper Waren Avenue, Mapledurham, Oxfordshire, and ELLIOTT & SONS (READING), Ltd., S., 24, Basinghall Street, London. Sept. 12, 1934, No. 26191. [Class 65 (ii)] [See also Group X] A collapsable revolving door comprises four vanes 2 .. 5 connected by hinges in pairs to two relatively angularly movable members of the centre post. The two members may be semicircular posts 10, 11 pivotally connected by spindles 12, 13 to straps 9, 14 rotatably mounted in ceiling and floor. The posts may be fluted or connected by gearing, Fig. 7, or may have two spring straps each secured to and enveloping half of one post, Fig. 6, to rotate together. The posts may be connected by spreen hinges to a central pivoted post 24, Fig. 8. The vanes may be held extended by projections 35 or rollers or the like engaging grooves in a spring-pressed plate 31 on the supporting spindle 26 and when collapsed may be moved to one side as described in Specification 428,245, [Group X].
Patent GB-642149-A (GB)
Title: Improvements in cable tensioning means for hoists
IPC: B66B9/187
Filed: 1947-09-29
Abstract: 642,149. Hoists. WARRY, R. F. Sept. 29, 1947, No. 26248. [Class 78 (iii)] A hoist in which a platform 8 is raised up or lowered down a tower 1 and is connected by a cable 7 to a winch drum 6 via guiding means 11, 13 at the top of the tower and in which the winch drum 6 is driven by a power unit 5 controlled by manually-operable control means 16, is characterized in that means (19) is provided which is adapted, in the event of the remote control means not being operated to arrest unwinding of the drum immediately the platform reaches its lower platform, to take up the surplus length of cable as it is unwound from the drum due to the drum over-running the stopping of the platform at its lower terminus and thus to maintain the whole of the cable unwound from the drum under tension. The cable 7 runs up from winch drum 6, round pulleys 11 mounted on tower 1, and down and around pulley 12 mounted on platform 8, up over guide 13, around stops 14 and round hand winch 15. The purpose of stops 18 and winch 15 is to fix the end of cable 7 but to allow it to be adjusted when required. If the winch by error is allowed to continue running when platform 8 reaches the bottom, i.e. if the control rope 16 is not operated, the resultant slack is taken up by bar 19 pivoted at 20 to the frame, the platform striking the bar 24 pivoted at 25 and the movement being transmitted through spring 22 and cable 23 to one end of the bar 19, the other end of which has a projection 18 which catches at and pulls out the cable 7 from its vertical position. When the platform 8 reaches the top it strikes bar 17, which is fixed at 17<1> to control rope 16 and automatically stops the winch 6. The cable 7 is fixed to the winch 6 at 27 which is a socket rotatable in flange 61. Specification 627,571 is referred to.
Patent GB-995886-A (GB)
Title: Gamma rays detector
IPC: G01V5/10
Filed: 1962-07-09
Abstract: 995,886. Radiation well-logging. SOCONY MOBIL OIL CO. Inc. July 9, 1962 [July 7,1961], No. 26257/62. Heading G1A. [Also in Division H1] In logging a bore hole gamma rays produced by bombarding the formations surrounding the hole with neutrons from a radio-active source 52 cause changes in resistance of a reverse biased PIN diode of the type described in Division H1. The resulting current pulses are amplified in the logging capsule, fed to the surface, further amplified and then fed to a pulse height analyser 35. The output of this may be displayed on a cathode ray tube and used to drive the pen of a recorder. The diode which includes elements with an atomic number greater than 50 has a high resolving power and a low-sensitivity to slow neutrons and can distinquish the chlorine spectrum produced by the presence of salt water normally associated with oil from the iron spectrum from the well lining.
Patent GB-714330-A (GB)
Title: Improvements in or relating to apparatus for melt-spinning artificial fibres
IPC: D01D1/10
Filed: 1950-10-27
Abstract: <PICT:0714330/IV (a)/1> <PICT:0714330/IV (a)/2> Apparatus for the melt-spinning of fibres from synthetic linear polyamides comprises a melting device in which the polyamide is melted with exclusion of air, a distributer nozzle leading from the melting device to a vacuum chamber, and a spinning nozzle connected to the vacuum chamber through a spinning pump, the distributer nozzle feeding the molten polyamide through the vacuum chamber in the form of filamentary streams and thereby facilitating the volatilization of monomeric components, occluded gases and water vapour.  As shown (Fig. 1), the molten polymer is forced by a pump or by the pressure of the protective gas in the melting chamber (not shown) through conduit 16, sieve 17 and distributer nozzle 14, from which it passes in the form of filamentary streams through vacuum chamber 9.  The molten polymer is then passed by pump 11 to the spinning nozzle 4.  The hood 6 of the spinning head 5 is heated by a liquid or vapour which enters at 7 and leaves at 8.  In a modification (Fig. 2), melting of the polymer is effected at the spinning head, a rod 19 of the polymer being forced through a tapered electrically heated melting bore 16 from which the molten material is forced through distributer nozzle 14 as before.  To ensure that the rate of melting does not exceed the supply performance of the spinning pump, a contact manometer actuated by the pressure existing ahead of the distributer nozzle may be employed to control the heating element 18.
Patent GB-601867-A (GB)
Title: Improvements in or relating to the manufacture of cinematograph films
IPC: B29C48/08
Filed: 1945-10-09
Abstract: <PICT:0601867/IV(a)/1> <PICT:0601867/IV(a)/2> Films suitable as a base for cinematograph films are manufactured by a process comprising continuously moving a belt or carrier having a series of register teeth along a predetermined path, at one point in the path spreading thereon around the teeth a layer of plastic material suitable for forming a transparent cinematograph film, and at a second point further along the path peeling the film away from the carrier.  While the film is still on the carrier pictures may be printed on it by imbibition or otherwise (see Group XX).  The carrier may comprise a drum but preferably it comprises an endless belt of thin flexible rust-proof metal such as that known as "Monel" metal (Registered Trade Mark).  Suitable film-forming materials are polyvinyl alcohol, polyvinyl acetal and regenerated cellulose, but stronger films are produced from cellulose esters such as cellulose acetate, acetate-propionate and acetate-butyrate.  The ester film may be surface-treated with alkali such as 5 per cent sodium hydroxide or with organic amines such as ethanolamine and isopropylamine to improve its dye-receptivity.  The apparatus shown in Figs. 1-2 comprises an endless belt 3 carrying register teeth 4 on its margins which is trained over drums 1 and 2. Film-forming material 7 is fed from a hopper 6 and is spread or moulded by an endless belt 11 trained over rollers 8 and 9, the space between the belts 3 and 11 being equal in thickness to that of the film 12.  The projecting teeth 4 are received in radial openings 13 and in the roller 8 these openings 13 are connected by transverse openings 16 extending to the side faces of the roller, so that any moulding material forced into the openings can escape through the transverse openings instead of being compacted.  The belt 11 is likewise provided with openings 17 to accommodate the teeth 4.  The roller 8 is flanged to prevent material being squeezed out at the sides.  The film is peeled from the carrier at 29 and reeled.
Patent GB-324067-A (GB)
Title: Improvements relating to lamps
IPC: F21S8/10
Filed: 1928-09-14
Abstract: 324,067. Allman, P. Sept. 14, 1928. Vehicle &c. lamps. -In a vehicle or other lamp the casing a is moulded from a phenol formaldehyde product, such as that known under the Registered Trade Mark " Bakelite," and is formed integrally with one or more bosses a<1> for securing it to a support. The bass a<1> may be provided with one or more metallic or other internal screw threaded rings a<21> or like members, and with a hole a<3> for the passage of the leads h. The front of the casing a may have an external screw threaded periphery for the reception of a milled front ring b and an annular recessed part a<2> for the reception of the substantially cylindrical part d' of a wholly or partly parabolic, hyperbolic, elliptical, or spherical metal reflector d. The front ring b and the bulb holder g may be moulded from the same material as the casing a.
Patent GB-1262488-A (GB)
Title: Hydraulic apparatus for including variable-delivery pumps
Inventor: BOYDELL KENNETH RAYMOND
IPC: F15B11/05
Filed: 1968-06-04
Abstract: 1,262,488. Hydraulic motor control circuits. DOWTY TECHNICAL DEVELOPMENTS Ltd. May 21, 1969 [June 4, 1968], No.26529/68. Heading F1P. The delivery of a variable delivery hydraulic pump 11, Fig. 1 which supplies a double acting jack 24 through an open centre selector value 15 is controlled by means 50 actuated by a spring-biased servo-device 45, 49, responsive to the pressure drop across an orifice 41 in a line 38 downstream of an unloader valve formed by slots 36, Fig. 2 in lands 27, 28 of valve 15 whereby on moving valve 15 in either direction from the neutral position shown in order to supply and exhaust the jack, the unloader valve is closed resulting in reduction to zero of the pressure drop across orifice 41 and the pump delivery being increased to its maximum.
Patent GB-316804-A (GB)
Title: Improvements in or relating to steam power plant with intermediate superheating
IPC: F01K3/26
Filed: 1928-09-17
Abstract: 316,804. Siemens - Schuckertwerke Akt.-Ges., and Gleichmann, H. Sept. 17,1928. Compound &c. engines.- Steam at least the critical temperature and critical pressure, termed " limit " steam, is used to heat the working steam between the stages of expansion in a fluid pressure motor. The motor 1, 2, 3, Fig. 1, is supplied with steam from a source 4. Intermediate receivers 5, 6 are heated by limit steam passed in series through coils 7, 8 by a pump 11 connected to a generator 9. Regulation may be effected by controlling the pump 11 or a throttle valve 13 in the system by changing conditions in the working steam. In a modification, the coils 7, 8 are arranged in parallel and the steam therein is controlled by throttle-valves subject to working steam changes. In the construction shown in Fig. 3, the motor is worked by limit steam taken from a generator 20, and heating-steam is taken from a branch of the main supply and pumped through an intermediate heater 5, the steam condition in which controls the heating-steam supply. The condensate in coil 7 is returned by a pump 11 to the generator 20. In a further modification in a plant using limit steam on the working-fluid, steam is taken from a main-supply branch and pumped in parallel through two intermediate heaters, the control of each being effected by the steam conditions therein. In a modification of the last arrangement, a multistage boiler feed pump also circulates the heating-steam.
Patent GB-808835-A (GB)
Title: Improvements in and relating to floor or roof structures and methods of erecting the same
Inventor: HARRIS ALLAN JAMES
IPC: E04B5/28
Filed: 1954-09-14
Abstract: 808,835. Floors; roofs. GILBERT-ASH Ltd. Dec. 12, 1955 [Sept. 14, 1954], No. 26621/54. Cass 20(4) A method of erecting a floor, or roof, structure comprises positioning slabs 15, made of wood wool, or of a lower layer of wood wool and an upper layer of concrete, in the spaces in a grillage formed by prestressed concrete primary beams 1, and secondary beams 2 fitted between them and subsequently prestressed, and applying thereto a screed, e.g. of concrete 20, to cover the slabs and reinforcing rods 17, and contact the upper edges 13 of the beams 1, 2 which project above the slabs 15, the latter forming permanent shuttering for the in situ concrete. The beams 1, 2 are of similar section comprising lower and upper booms 10, 11 respectively which are spaced apart, at regular intervals, by webs 12, the upper booms 11 having their tapered projecting flanges 13 provided with slots 18 to accommodate the reinforcing rods 17, and seatings 14 on each side to support the corresponding slab edges. The ends of the beams 1, 2 are each provided with a seat 4 to rest upon a spport 5 on a main wall 6. Specification 744,756 is referred to.
Patent GB-203921-A (GB)
Title: Improvements in water tube steam boilers
IPC: F22B21/18
Filed: 1922-10-03
Abstract: 203,921. Naismith, D. M. Oct. 3, 1922. Water-tube boilers.-A water-tube boiler has a steam drum 8 arranged between two steam-andwater drums 5, 7 and connected thereto by steam tubes 12, 13 and water-drainage tubes 15. The steam is dried during its passage through the drum 8 and is taken off through a pipe connected to the drum 5. Feed-water is supplied to the drum 5 through a pipe 23. Combustion gases may pass around the bottom of the steam drum or a baffle 24 may be fitted to prevent the gases from coming into contact with the drum. In a modification, the generating tubes are horizontally inclined and connected to front and rear headers.
Patent GB-664129-A (GB)
Title: Improvements in screw thread taps
IPC: B23G5/06
Filed: 1949-10-19
Abstract: 664,129. Taps. HAYCOCK, H. J., and WILSON, H. G. C. Oct. 16, 1950 [Oct. 19, 1949], No. 26791/49. Class 83 (iii). The flutes 1 of a helicallyfluted tap have a helix angle of between 40 and 50 degrees, preferably 45 degrees, to assist in the removal of swarf, particularly from blind holes. The flutes are of the same hand as the threads 2 of the tap and the trailing edges 4 of the threaded lands are backed off.
Patent GB-187826-A (GB)
Title: Improvements in keeper pins for axle caps of colliery tram wheels and the like
IPC: B61F15/26
Filed: 1921-10-11
Abstract: 187,826. Allen, G. W. Oct. 11, 1921. Hubs.-Relates t o looking pins, for preventing accidental unscrewing of the axle caps of wheels, of the type which engage a hole formed by registering grooves in the cap and wheel hub, and consists in the provision of a resilient strip of metal 9 firmly secured to the pin at one end and bent back on itself so as to engage the inner face of the wheel hub as shown in Fig. 5 and prevent accidental withdrawal of the pin. The shank of the pin is slotted axially and one of the sides cut away as at 4. The resilient strip has a shank part 6, which is secured in the slot by a rivet 12, and a curved resilient part 7 the free end 9 of which is bent back so that normally it projects beyond the surface of the pin. When it is desired to withdraw the pin, sufficient force must be applied either to fracture the strip or bend it back.
Patent GB-659559-A (GB)
Title: Process of manufacturing moulded articles from bark of coniferous trees, and articles thus manufactured
IPC: C08L97/02
Filed: 1949-10-19
Abstract: Moulded articles such as building boards, flooring boards, furniture boards and insulating boards are obtained by moulding a powdery mass consisting wholly or mainly of the ground bark or rind of coniferous trees without any extraneous binder, at a moisture content not greater than 25 per cent, a temperature of between 65 DEG  and 190 DEG  C. and a pressure above 30 kgs. per sq. cm. In examples: (i) and (ii) conifer bark is ground to pass a 2 mm. sieve and the moisture adjusted to 12 per cent, it is then pressed at 120 kgs. per sq. cm. for 25 minutes at 145 DEG  C., with or without a 1 mm. thick veneer of oak or mahogany.  In example (iii) insulating material is obtained by pressing the bark at 65 kgs. per sq. cm. at 100 DEG  C.
Patent GB-579122-A (GB)
Title: Improvements in or relating to the transmission of mechanical waves or vibrations for signalling purposes
IPC: G01S1/72
Filed: 1940-09-17
Abstract: 579,122. Signalling by audible signals. IGRANIC ELECTRIC CO., Ltd., and RANDALL, C. E. Sept. 17, 1940, No. 26870/39. [Class 118 (ii)] A signalling system comprises a cable or a structure through which mechanical waves of audio frequency can pass, a transmitter for producing the waves and transmitting them to one end of the cable through a transmitting amplifier for giving the waves high energy, and a receiver for receiving the waves from the other end of the cable and for converting them into intelligible signal form. In the arrangement shown in Fig. 2, a cable C connects two magnetostriction devices S which are anchored at Z. Each device S comprises a magnetising coil W, Fig. 1, wound on a rod D which is secured at one end to the casing and at the other end is connected to the cable C. A microphone M is connected to one of the devices S through an input amplifier IA, while the other device S is connected through an output amplifier OA with a telephone Ph. A polarizing current may be applied to the coil W by means of a battery. The arrangement may be used for communication between a captive balloon and the ground, the casing of the devices S being made sufficiently heavy to provide reaction for the vibrations. The signals may also be transmitted through the hull of a ship. The magnetostrictive devices may be replaced by piezoelectric devices each comprising two quartz blocks Q, Fig. 4, gripped between an anchoring frame F and a plate P which is connected to the cable C. The input and output circuits are connected with electrodes E1, E2 in contact with opposite faces of the blocks Q, insulating sheets I1, I2 of rigid material, such as mica or porcelain, being interposed between the electrodes and the rest of the assembly. A number of signals can be transmitted simultaneously over one cable by connecting three frequency generators A1, A2, A3, Fig. 6, controlled by keys K1, K2, K3, respectively, to separate primary windings on a transformer P3 the secondary of which is connected to the coil W of the driver S. A similar device is used at the receiving end of the cable, the output transformer being connected to telephones through selectively-tuned audio frequency amplifiers.
Patent GB-1341414-A (GB)
Title: Variable displacement vane-type rotary pumps or motors
IPC: F04C14/22
Filed: 1971-04-19
Abstract: 1341414 Rotary positive-displacement pumps and motors CHANDLER EVANS Inc 19 April 1971 [14 April 1970] 26924/71 Heading F1F A pump or motor, e.g. a variable output fuelpump, comprises a rotor 18 carrying outwardlysliding vanes 22 that engage with a cam track defined by a pair of elements 26, 28, which can be moved radially relative to each other by partial rotation of a ring 32 in response to pressure applied to pistons 34, 36. The elements have mutually engaging tongues and grooves, Figs.3 and 4 (not shown), and are prevented from rotating by a frame 30 and pistons 43, 45. An inlet conduit 16 communicates with a pair of inlet ports in each element, Figs.3 and 5 (not shown), by way of a cavity 14. A pair of outlet ports in each element is connected to a discharge conduit 14b by way of a passage 26f, or 28f, and the interior of a wash-flow filter 148. A pressureloaded piston 52 urges an end plate 48 and the rotor towards a further end plate 46. Each of the end plates has lugs 136, 138 engaging with holes in the frame 30 to prevent rotation. Pressure is communicated to the inner ends of the vanes from the passages 26f, 28f through apertures 122, 124 in register with said passages, and recesses 126, 128 in each end plate. Recesses 132, 134 facilitate escape of leakage fluid and limit the outward thrust on each plate. The profile of the cam track is described in detail with reference to Fig.1A (not shown). To actuate the pistons 34, 36 a pressure differential is applied through conduits 226, 228 to bellows 216 and thereby moves a value spool 188, 190, 192, 194 accordingly to apply inlet and discharge pressures to opposite sides of the pistons, the discharge pressure being transmitted through the filter. The piston 52 is subjected to discharge pressure through conduits 158, 160 and an orifice 163 adjacent a pressure-relief valve 144. Bearings for the rotor may be lubricated through a conduit 230.