baber/WOPTO huggingface dataset:
Patent GB-856869-A (GB)
Title: Method and apparatus for maintaining constant temperature polymerization
IPC: C08F2/00
Filed: 1957-07-19
Abstract: <PICT:0856869/IV(a)/1> A polymerization reaction in which monomer, solvent and catalyst are continuously introduced into a reaction zone is controlled by varying the rate of introduction of catalyst in accordance with changes in the rate of heat removal.  In Fig. 1 monomer, solvent and catalyst are fed into the reaction vessel at 2, 3, 4 respectively and heat removed by a coolant circulating through 10 and 14.  The temperature of the coolant is regulated by water passing through the heat exchanger 12, and this is in turn controlled by the valve 11 in response to changes of temperature sensed by the thermocouple 8.  If the activity of the catalyst changes, the rate of generation of heat in the reactor will alter but the control system just described will tend to maintain the temperature constant.  The device 9 senses the change in heat generation by measuring the difference in temperature between the ingoing and outgoing coolant streams and adjusts the valve 15 to vary the rate of introduction of catalyst and thus maintain the reaction rate constant.  The rate of flow of coolant is held constant by the system 25, 26, 27.  In an alternative system (Fig. 2 not shown) the coolant is a boiling liquid and its temperature is regulated by varying the pressure on the boiler in accordance with the thermocouple output.  In this case the valve 15 is controlled in accordance with the pressure in the line of the outgoing coolant.  In another arrangement (Fig. 3, not shown) the coolant temperature is constant and the pressure in the line of the ingoing coolant is varied to control the temperature in the reactor; this pressure is also used to control the valve 15.  An example is given of the use of the control system in the polymerization of ethylene at 290 DEG F. and 500 p.s.i.a., using cyclohexane as solvent and chromium oxide as catalyst.  The latter contains a substantial amount of hexavalent chromium and is associated with 90-99.9% of porous silica, alumina, zirconia or thoria, as used in the process of Specifications 790,195 or 804,641.  The process is applicable to the polymerization of 1-olefines having 2-8 carbon atoms and no branching nearer the double bond than the 4-position; suitable olefines are mentioned. The solvent may be an alkane or cycloalkane of 3-12 carbon atoms; olefines are less suitable.  The solvent can be partially or wholly premixed with the catalyst or the monomer before introduction into the reactor.
Patent GB-691518-A (GB)
Title: Improvements in and relating to dies for high temperature applications and iron alloys therefor
IPC: C22C38/58
Filed: 1951-10-03
Abstract: An air-hardening alloy, suitable for use as a forging die, has the following composition.  C 0.3-0.4 per cent, Mn 1.5-2.5 per cent, Si 1.25-2.5 per cent, Cr 3.0-4.0 per cent, W 0.75-1.5 per cent, Ni 1.0-2.0 per cent, Fe the balance.  A known alloy used for forging dies is referred to containing C 0.35 per cent, Cr 5.0 per cent, W 1.2 per cent, V 0.2 per cent, Mn 0.35 per cent, Si 1.0 per cent, Mo 1.6 per cent.
Patent GB-153148-A (GB)
Title: Improved method of driving electric generators on bicycles and similar vehicles
IPC: B62J6/06
Filed: 1919-09-19
Abstract: 153,148. Earnshaw, J. Sept. 19, 1919. Dynamos, driving.-Generators for lighting on bicycles and like vehicles are driven by a small pulley E engaging a driving-band F carried on clips D on the spokes of the wheel A. The generator B is mounted by a clip or bracket b on the fork C, a spring stay b<1> being placed over the free end of the spindle for further support. When the generator is idle the belt is removed from the pulley and carried by an auxiliary clip D<1>.
Patent GB-1503993-A (GB)
Title: Reaction container for chemical analysis
IPC: G01N35/02
Filed: 1975-05-23
Abstract: 1503993 Portable containers WORTHING- TON BIOCHEMICAL CORP 23 May 1975 [28 May 1974 16 May 1975] 23057/75 Heading B8D [Also in Division G1] A disposable reaction container of rigid or semi-rigid material comprises (Fig. 8) two chambers 38, 39 communicating with respective liquid inlets at the top of the container and separated from each other by dividing means 37 which is impervious except for a passage 40 of restricted cross-section through the dividing means in the lower portion of the container, at least one of the chambers having transparent windows 60, 61 therein for transmission of light through a body of given thickness of liquid within the chamber between the windows, passage 40 being effective to entrap a quantity of air upon introduction of aqueous solutions respectively into chambers 38, 39 to levels above the levels of the openings of the passage into the chamber to thereby maintain the solutions separated from each other, each chamber being capable of retaining a body of liquid therein without flow to the other chamber when the container is in an upright position. The dividing means in the embodiment shown comprises projection 36 extending from the bottom wall of the container between and integral with the side walls of the container, and dividing means 37 also extending between and integral with the side walls. In another embodiment (Fig. 6) a divider 17 depends from a cover 16 for the container and is in snug contact with or is heat adhesive or solvent sealed or ultrasonically welded to the sides of the container. Grooves in the inner wall of the container accommodate tongues (25), 27 in the cover to locate the cover on the container. The cover has openings 28, 29 communicating one with each chamber, the openings having removable plugs or stoppers or alternatively a rupturable sealing membrane. A puff of air introduced through the opening into one of the chambers serves to force liquid from that chamber to the other through the restricted passage. The container may be of plastics and contain known amounts of lyophilized reagents for use in testing, e.g. lactic acid and phosphate buffer, and diphosphopyridine nucleotide in the respective chambers for determination of lactic dehydrogenase.
Patent GB-185946-A (GB)
Title: Improvements in electric accumulators
IPC: H01M10/18
Filed: 1921-08-31
Abstract: 185,946. Palmer, J. R., and Ashton, W. C. Aug. 31, 1921. Electrodes. - A storage battery consists, as shown in plan, of a trough A provided with grooves B to receive lead partitions C formed with undercut projections P. The electrodes D, E are provided with portions K to engage between the projections P, thus forming a number of cells in series. The electrodes D, E are of lead peroxide and spongy lead respectively.
Patent GB-1292573-A (GB)
Title: Pipe joint
Inventor: BORNER FRITZ
IPC: F16L13/007
Filed: 1971-04-19
Abstract: 1292573 Pipe couplings MESSER GRIESHEIM GmbH 19 April 1971 [4 March 1970] 23082/71 Heading F2G A pipe joint comprises a spigot 2, integral with or connected to a pipe 15, a sleeve 1, integral with or connected to a pipe 13, the sleeve engaging a portion of the spigot and extending beyond to form an annular space 5 between the sleeve and the spigot in which an intermediate ring 6 is located to form a tight seal. The portion 3 of the spigot 2 engaging the sleeve 1 is formed as a collar having axial prongs 11 piercing the intermediate ring 6 and the sleeve 1. The sleeve is initially heated, and the spigot 2 is pushed into the heated sleeve so that the prongs 11 bite into the sleeve; the unheated intermediate ring 6 is pushed into the annular space, and the sleeve 1 is allowed to cool. The intermediate ring 6 and the sleeve 1 may be welded at 9. The sleeve 1 is of aluminium together with the intermediate ring 6, and the spigot 2 is of austenitic steel. The intermediate ring 6 may comprise segments or half-rings.
Patent GB-389731-A (GB)
Title: Improvements in and relating to vehicles such as road rollers, traction engines andtrailers
IPC: B62D17/00
Filed: 1932-08-17
Abstract: 389,731. Vehicle axles. BARFORD & PERKINS, Ltd. and KNIGHT, F. B., Invicta Works, Rochester, Kent. Aug. 17, 1932, No. 23102. [Class 108 (ii).] Relates to road rollers, traction engines, and vehicles having each side wheel mounted on a stub axle 1 pivoted on an axis longitudinal of the vehicle and provided with an inward extension 2 whereby the wheels may be adjusted or set themselves to suit the desirable or actual camber of the road. According to the present invention each inward extension 2 has its own spring and means are provided for positively locking or limiting the play of the extensions. In the construction shown the extensions 2 pass through a casing 4 fixed to the vehicle frame 3 and are formed with faces 8 bearing on abutments 9 resting on coil springs 10 carried by the casing 4. Eye-bolts 12, 13 are pivoted to the ends of the extensions and pass through sleeves 14 screwed into the casing 4 ; when the nuts 16 on the bolts are loose the extensions are controlled by the springs 10 which act as shock-absorbers, but by screwing the sleeves 14 in or out and tightening the nuts 16 each extension can be independently adjusted and locked to give a desired camber to the corresponding wheel. In a modification a single bolt locks both extensions, but when free each extension is controlled by its own spring. Fore-and-aft play of the extensions is limited by coacting faces 6, 7 formed thereon and on the casing 4. According to the Provisional Specification additional locking means may be provided comprising a wedge device, e.g. three wedges, engaged over the centres of the extensions so as to look them against fore-and-aft movement.
Patent GB-1455729-A (GB)
Title: Process for the production of tertiary amines
IPC: C07C/
Filed: 1974-05-23
Abstract: 1455729 Tertiary amines RUHRCHEMIE AG 23 May 1974 [30 May 1973] 23147/74 Heading C2C Tertiary amines are made by reacting at an elevated temperature and pressure (1) a compound obtained by condensing ammonia with an aldehyde of formula R-CHO where R is a C 2-20  alkyl group (2) an aldehyde of formula R<SP>1</SP>-CHO where R<SP>1</SP> is a hydrogen atom or an alkyl group (3) hydrogen and optionally (4) ammonia in the presence of a catalyst comprising at least one metal selected from Cr, Mo, W, U, Mn, Tc, Re, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir or Pt. Preferably the catalyst is a mixture of metallic Fe, Co or Ni, a Group VI metal compound, e.g. chromium (3) oxide and optionally an activated, e.g. magnesium oxide or aluminium oxide. The aldehyde-ammonia condensate (1) may be an azomethine or alpha-ethanolamine.
Patent GB-413511-A (GB)
Title: Improvements in wardrobe travelling cases particularly for ladies' garments
IPC: A45C13/03
Filed: 1933-08-19
Abstract: 413,511. Suit cases; garment-hangers. PARKER, WAKELING, & CO., Ltd., and SNOW, P. W., 13, Playhouse Yard, Golden Lane, London. Aug. 19, 1933, No. 23154. [Class 18.] In a suit case of the type provided with a flat frame h hinged in the case but removable therefrom and adapted to hold removable rods r on which garments are draped so that they are further folded or draped over the frame when the latter is lifted into the case, the end trunnions of the rods engage in slots in brackets j disposed on the frame near the hinged end thereof, and the frame complete with its superposed rods and the garments thereon can be removed from the case and used as a separate garment hanger as, for example, by attaching a loop of cord, &c. to the brackets. The frame is H-shaped in plan and it is hinged in the lid of the case by means of trunnions adjacent the brackets engaging in slots in brackets e, and the slots in both sets of brackets e, j are so formed at the entrances to facilitate insertion of the trunnions on the frame and rods respectively. The rods are, preferably, of substantially circular cross section, and the side of the frame adjacent the brackets j is of circular form whilst the opposite side is also curved. The frame is held in the raised position by transverse straps in the lid. According to the Provisional Specification, the brackets e may be in the body of the case.
Patent GB-475073-A (GB)
Title: Improvements in operating gear for doors, gates or the like
IPC: E05F15/14
Filed: 1936-08-24
Abstract: 475,073. Electromagnetic clutches. EXPRESS LIFT CO., Ltd., and HEPPELL, W. A. Aug. 24, 1936, No. 23226. [Class 35] [Also in Group XXV] An eddy-current clutch comprises solenoids 23 with cores 21 in a casing 14 mounted on the driving shaft 15 and a steel disc 17 on the driven shaft 18, the solenoids 23 being fed through slip-rings 25.
Patent GB-643251-A (GB)
Title: Improvements relating to electrical remote control systems
IPC: H02H7/00
Filed: 1948-09-03
Abstract: 643,251. Switching systems. SWITCHGEAR & COWANS, Ltd., ROWBOTHAM, J. L., and HALACSY, A. Sept. 3, 1948, No. 23239. [Class 38 (iv)] A relay is remotely controlled by a switch having (1) a " start position in which it connects in circuit with the relay coil and source an impedance of such value as to allow the relay to pick-up, and (2) a " run " position in which it changes the circuit impedance to a value such that the relay holds in but fails to pick up should it drop out for any reason. A relay b supplied from a low voltage transformer a is controlled by three-position switches c, d connected together by pilot wires e. To operate the relay one switch is moved from the " off " position 3 to the " run " position 2 and the other is moved to the " start " position 1. Three of the four condensers f-i are thereby connected in parallel and pass sufficient current through the relay coil to cause pick-up. Current is then reduced to a holding value by moving the second switch from position 3 to position 2. Condenser failure, or an.earth fault on the line pilot wire causes the circuit impedance to rise above the hold-in value, so that the relay drops out. In a modified arrangement the relay coil circuit includes in series a fixed inductor and a fixed capacitor and the switches function to insert further inductance or resistance into the circuit. The switches may be spring-biassed from the " start " position to the " run " position.
Patent GB-627464-A (GB)
Title: Improvements in or relating to moulds
IPC: A61C13/08
Filed: 1947-08-21
Abstract: 627,464. Moulding artificial teeth, dolls' eyes, marbles, buttons or control knobs. LEADER, S. A. Aug. 21, 1947, No. 23243. [Class 87 (ii)] A mould, particularly for use in the manufacture of artificial teeth according to the process described in Specification 627,406 comprises two mould parts 2, 3, an open topped filling chamber 4 in the upper part 3, downwardly extending canals 5 leading to mould cavities 6. The canals and cavities are formed in at least one of the mating surfaces of the mould parts. The mating surfaces are conical or pyramidal. The mould parts are held together by clamps 7. The upper part of the mould may be subdivided. Similar moulds may also be used in the manufacture of dolls' eyes, marbles, buttons or control knobs.
Patent GB-803933-A (GB)
Title: Tubular elements for heat exchange apparatus
Inventor: UPTON HENRY EDWARD
IPC: F28D9/04
Filed: 1956-07-27
Abstract: 803,933. Making heat-exchangers. SERCK RADIATORS, Ltd. July 11, 1957 [July 27, 1956], No. 23247/56. Class 83 (2). [Also in Group XIII] In a method of making a heat exchanger, an initially flat element is folded upon itself (Fig. 4) and is then coiled' to a spiral form (Fig. 5) so that the two ends d of the element lie outside the coil for subsequent connection to headers, the element being formed by welding together two metal sheets of predetermined positions, by rolling, the sheets being subsequently dilated at intermediate positions by fluid pressure, to provide a plurality of tubes b (Fig. 3) formed by the dilated parts of the sheets and separated by integral webs c formed by the welded parts of the sheets.
Patent GB-241692-A (GB)
Title: Improvements relating to windscreens for motor-cycles
IPC: B62J17/04
Filed: 1924-10-03
Abstract: 241,692. Brooks & Co., Ltd., J. B., and Lawrence, A. H. Oct. 3, 1924. Weather-screens.-In a windscreen for motor-cycles of the kind which is carried upon horizontal rods 7 mounted on the handlebars and is maintained in an upright position by inclined stays 14 connected at one end to the screen 1 or adjacent part and at the other end to the rods, the upper ends of the stays are slidably mounted upon guide-rods 5 forming part of the screen frame so that the inclination of the screen can be varied by raising or lowering the upper ends of the stays, and the two ends are adapted to be locked simultaneously in any adjusted position by the rotation of a single bar or the like. In the construction shown, the rods 5 from the vertical limbs of a U-shaped support and pass through and support tubular sleeves 2 integral with the edges 3 of the screen frame proper, the lower ends of the limbs 5 being pivotally mounted by joints 9 - - 12 so as to have a universal movement on the rods 7. The ends of the stays 14 are also pivotally connected by two-part pivoted clips 17 and 24 to the rods 7 and guide-rods 5 respectively so as to have universal movements relative thereto. In this way the rods 7 can be adjusted to any suitable angle to fit handle-bars or supports of various widths. In order to effect a simultaneous tightening or slackening of both clamps 24 for adjusting the inclination of the screen, a transverse rotatable bar 32 having internally threaded ends 30 engages fixed right- and left-handed screws 29 passing through the clamps and is rotated to cause the limbs of the clamps to close together or move apart.
Patent GB-759685-A (GB)
Title: Improvements in and relating to coding devices for use in automatic telephone exchanges
Inventor: CHUBB ALEXANDER ALBERT
IPC: H04Q3/42
Filed: 1950-09-22
Abstract: 759,685. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd. Aug. 31, 1951 [Sept. 22, 1950], No. 23344/50. Drawings to Specification. Class 40 (4). Dialled digits are registered on a succession of switches whose bank terminals are fed by different code signals and the outputs from the wipers are fed together with other non-digital information to an output terminal. The code signals may take the form of pulses, a different pulse position being allocated for each digit and each digital position. The non-digital information, which may be the identity of a communication channel through the exchange may be impressed on the output either by gating the digital information only during prescribed periods indicative of the non- digital information ; or by the provision of further pulses occurring after the pulses denoting the digital information. The description is substantially identical with that referring to Figs. 3 and 17 of Specification 759,682. Specification 759,684 also is referred to.
Patent GB-698531-A (GB)
Title: Improvements in flower holders
IPC: A47G7/03
Filed: 1951-10-08
Abstract: 698,531. Flower holders. WEST, G. C. March 7, 1952 [Oct. 8, 1951], No. 23393/51. Class 128 [Also in Group XXV] A flower holder comprises a flower support 1 having a base 4 and pins 6 projecting therefrom, in combination with a resilient suction pedestal 2 having a recess 13 into which the base 4 fits and having, e.g. a suction cup 14. The base 4 may have an outwardly and downwardly spread, e.g. bevelled or stepped, edge, the recess 13 being correspondingly undercut. The base may be made of thermo-setting or thermo-plastic material, or of resilient material, e.g. indiarubber, artificial rubber or gutta percha, and may be formed with perforations 7, e.g. slightly less in diameter than the pins, into which the pins are inserted. The pins may have heads 8 and the holes may be countersunk to receive them. The suction pedestal may be made of indiarubber softer than the base 4.
Patent GB-685029-A (GB)
Title: Improvements in frequency regulating devices
IPC: H02P9/42
Filed: 1951-10-08
Abstract: 685,029. Automatic frequency control. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Oct. 8, 1951 [Nov. 10, 1950], No. 23397/51. Class 38 (iv). An A.C. supply is regulated by a frequency discriminator regulator, and further corrected for time keeping by comparing in a differential gear the speed of a synchronous clock driven from the supply and a master clock keeping astronomic time, the output of the differential being used to modify the frequency regulator. Frequency control. As shown, the A.C. supply 5 feeds through a voltage stabilizer 3, a frequency discriminator comprising a pair of back-to-back connected triodes 7, 8 energized from a transformer 6, and having their grids supplied from the secondaries of a transformer 5 tuned to the normal frequency whereby the grid voltages are substantially in quadrature with plate voltage at the resonance frequency. A D.C. responsive regulator 15 responds to the mean of the anode currents to operate e.g. the steam supply valve of the primer mover. Synchronizing. The time-correcting arrangement comprises a differential gear driven by a synchronous motor 12 energized from the supply and an impulse motor 18 slaved to a master clock 19 keeping astronomic time. The difference element 16 varies the anode resistance 12 of one of the valves to unbalance the frequency discriminator. Alternatively, the difference element may, e.g. vary the capacitor 4 to vary the normal frequency and correct the synchronous time.
Patent GB-218161-A (GB)
Title: Apparatus for raising the seats of water closets by means of the foot
IPC: A47K13/10
Filed: 1923-09-19
Abstract: 218,161. Johnstone, W., and Wheeler, P. H. Sept. 19, 1923. Closet seats.-The seat i is connected with a treadle d by links f, b. When the treadle is depressed the seat is raised and held in the raised position by a spring or gravity catch j which is released by pressing a lever k pivoted to the lever b. Descent of the seat is retarded by a dashpot p.
Patent GB-1274627-A (GB)
Title: Antiskid braking system for automotive vehicles
IPC: B60T8/38
Filed: 1971-04-19
Abstract: 1,274,627. Antiskid braking systems. SOC. ANON D.B.A. 19 April, 1971 [12 March, 1970], No. 23400/71. Heading F2F. In a vehicle antiskid braking system wherein the fluid supply between a pressure source such as a master cylinder 10 and front wheel cylinders 18, 19 or rear wheel cylinders 22, 23 is controlled by pressure modulating valves 62, 63 or 26, 30 respectively which are actuated in response to shielding conditions to terminate the supply from the source and connect the wheel cylinders to a low pressure reservoir 12 to prevent wheel lock a restricted fluid passage 72 or 46 is provided in the fluid supply connection so that the fluid flow rate to the wheel cylinders is limited when the supply connection is re-opened. Devices 70, 44 which include the restricted passages also include by-pass passages 80, 50 controlled respectively by valves 76, 52 operated by pistons 78, 54 responsive to differential pressures.
Patent GB-277952-A (GB)
Title: Improvements in distillation
IPC: C10C1/04
Filed: 1927-09-06
Abstract: 277,952. International Combustion Engineering Corporation, (Assignees of Runge, W.). Sept. 21, 1926, [Convention date]. Film evaporators; hydrocarbons, distilling; column stills and rectifiers. - In apparatus for distilling tars and oils in which the materials are heated in a still 2 by a heating medium passing through a hollow casing 18 adapted to be rotated and to carry the material as a film on its surface, the casing is provided with radially projecting hollow blades 20. A baffle 34 is mounted inside the casing 18 which is covered with iron plates 44 joined by wooden fillers 47. The volatilized material is condensed in a series of tubular condensers 56, Fig. 5 through which the waste gases are passed in series through pipes 58, 64. The temperature of the gases is controlled by a thermostat 68. A modification is shown :n Fig. 7, in which the material is first preheated in heat exchangers 75, 78 before entering the still 2. The undistilled residue is continuously withdrawn through a pipe 72 having a goose. neck seal to the heat exchanger 78. Hot combustion gases are passed through a heat exchanger 82 thus preheating uncondensed gases obtained in the process which are drawn by a blower 88 through a condens,er 75, a catch tank 92, and a condenser 96 back to the still by a pipe 90.