baber/WOPTO huggingface dataset:
Patent GB-1440173-A (GB)
Title: Acceleration sensitive motion snubber
IPC: G21C9/04
Filed: 1974-09-27
Abstract: 1440173 Band brakes; weight-operated acceleration-sensitive brakes PACIFIC SCIENTIFIC CO 27 Sept 1974 [1 Oct 1973] 42063/74 Headings F2E and F2F A brake comprises a pair of members 10, 12, Fig. 2, mounted for relative movement with respect to each other and an accelerationsensitive component (as shown, an inertia mass 70 (connected to the members for limiting movement of either of the members relative to the other in either of two opposite directions to a predetermined threshold acceleration, the acceleration-sensitive component including apparatus for preventing such limiting, below the predetermined threshold acceleration, thus permitting repeated or continuous relative movement below the threshold both before and after it has been reached. As shown, one support member 10 consists mainly of a tube 16 and a tongue 14 having an attachment hole 15; member 10 is telescopically slidable but not rotatable relative to the other support member 12 which consists mainly of a tube 24 and a cup-shaped housing 22 secured together by a collar 28 and bolts 29; attachment holes (not shown) are provided in a flange 22a. Relative linear movement is converted into relative rotation by a housing 40 furnished with ball bearings and having a ball return track 40a, the housing being secured to tube 16 and the bearings co-operating with a threaded shaft 38 secured to the inner race 44a of a bearing 44 whose outer race 44b is secured to tube 24. A cup-shaped torque carrier 48 is secured to shaft 38, and a helical spring 60, located between carrier 48 and tube 24, has its ends 60a, 60b, protruding through a window 48d in the torque carrier. The spring ends engage the inturned ends 74a, 74b of a spring "clutch" 74 which engages the inner surface of a cup-shaped inertia mass 70 which is rotatable on shaft 38. In operation, when there is no relative movement between members 10 and 12, all parts are stationary with relative positions as shown in Fig. 3; when movement occurs below a threshold acceleration, tube 22 and tube 24 with included outer race 44b remain rotationally fixed, while all other components rotate, retaining their relative positions of Fig. 3. Assuming counter-clockwise rotation of shaft 38, when the acceleration reaches the threshold value, inertia mass 70 lags behind the torque carrier 48, which thereupon forces spring end 60a counterclockwise while end 60b is held by clutch end 74b, Fig. 4, Spring 60 is thereby contracted and acting as a band brake grips tube 24 to inhibit or prevent further relative movement. If members 10 and 12 reach one or other end of their mutual travel after relative motion at high speed, the abrupt stop thereby resulting is prevented from damaging spring 60 by slipping of "clutch" 74 in the inertia mass 70. The apparatus functions appropriately for either direction of relative movement. Member 10 may be connected to a fluid-conducting pipe and member 12 to the wall in a nuclear power station to prevent pipe-rupture during earthquakes.
Patent GB-1442830-A (GB)
Title: Holding device for an artificial heart valve
IPC: A61F2/24
Filed: 1973-09-07
Abstract: 1442830 Heart valve holder MEDICAL INC 7 Sept 1973 [8 Sept 1972] 42262/73 Heading A5R A device for holding a heart valve 10 comprises a body 22 with a head 23 engageable with the valve base 16, an inclined groove 30 in the head for accommodating the valving means 18 and a band 26 for passing over the valve, secured at one point to the head and at its free end in a slot 32 by a screw 34. Holes (25) Fig. 8 (not shown) are provided to relieve blood pressure across the valve during implantation. The band 26 comprises a connecting section (27) Fig. 2 (not shown) moulded into the head, the body with the head and the band being of plastics material, an elliptical shaped section 29 Fig. 2 to cover the valve and a tail section 28 which passes through the slot 31 to be secured in the slot 32. A hole 33 in the body is threaded to receive a handle (14) Fig. 1 (not shown) comprising a rod (37) and flanges (38, 39) with a flexible plastics or rubber sheet (41) between them for use as a suture holder. The band (126) Fig. 14 (not shown) may be attached to the head (123) by a connecting section (127A) coupled to a metal member (125) by a hub (125A) moulded into the head (123), and passed through a slot (131) in an edge of the head to be received in a transverse passage (132). The opening (131) also prbvides relief for blood pressure during implantation.
Patent GB-1505578-A (GB)
Title: Thermally insulated pipes
IPC: F16L59/12
Filed: 1976-10-18
Abstract: 1505578 Heat-insulated pipes BRUUN & SORENSEN Ltd 18 Oct 1976 [17 Oct 1975] 42609/75 Headings F2P and F2G A thermally insulating pipe includes a carrier pipe 2 concentrically spaced from an outer insulated pipe 4 by means facilitating relative axial movement between the pipes. Preferably a plurality of axially spaced collar members 6 maintained in embracing contact with a steel carrier pipe 2 via clamping means 12, carry circumferentially arranged mountings 8 wherein ball castors-or as shown rollers 10, of nylon or cast-iron are mounted in rolling contact with an outer steel pipe 4. Mineral or asbestol wool insulation may be included at each radial side of the collar with a layer of polyurethane foam 16 surrounding the outer pipe and protected by an outermost casing 18 of high impact resisting polyethylene. The whole may be surrounded by a water impervious layer, e.g. of PVC. A joint for such pipes is also disclosed (Figs. 3-5, not shown) wherein projecting carrier pipe ends of axially confronting pipes are welded before a sleeve member surrounding the outer pipe is axially slid into bridging relationship with the spaced outer pipe ends and welded respectively thereto.
Patent GB-1531615-A (GB)
Title: Measuring the moisture content of a gas
IPC: F26B21/08
Filed: 1976-10-14
Abstract: The object of this method is to measure the absolute humidity of a gas used for drying in dryer designs, the humid gas to be measured, with a temperature of over 100 DEG C, flowing through a measuring tube. The gas whose humidity is to be measured is passed through a measuring tube (7). Into this tube, via a nozzle (10), a precisely defined amount of liquid (W) is sprayed into the gas. Said amount of liquid is chosen in such a way that the enthalpy of the gas to be measured remains virtually unaffected. The temperature of the gas to be measured is measured by two temperature sensors (12, 13) upstream and downstream of the spray-in point; based on these two temperature values, the absolute humidity is calculated. The method is used especially in dryers which are employed to produce and finish various continuous materials having hygroscopic properties. <IMAGE>
Patent GB-1027743-A (GB)
Title: Preparing alkenes
IPC: C07C69/54
Filed: 1962-11-12
Abstract: Alkenes, substituted by a group containing a C atom bonded by a single bond to one of the unsaturated bonds of the alkene and by a double, triple or aromatic bond to another atom, e.g. a vinyl or an aryl group, for example, styrene and butadiene are prepared by dehydrogenating the corresponding alkane with an oxide, sulphide, or oxyacid of arsenic, antimony or bismuth or with a salt of such oxyacid at a temperature of at least 100 DEG  C. In a modification a compound containing two alkenyl groups, e.g. divinyl benzene, is similarly produced.  A temperature of between 450 DEG  and 500 DEG C. is preferred and a stream of vapour of the compound may be passed through the reaction vessel packed with particles of the oxide or containing particles suspended on a carrier such as silica gel, alumina or silica. Examples describe the preparation of styrene from ethylbenzene, using antimony tetroxide as a catalyst; and butadiene from butene-1 using a bismuth trioxide catalyst.ALSO:Alkenes substituted by a group, containing a C atom bonded by a single bond to one of the unsaturated carbon bonds of the alkene and by a double, triple or aromatic bond to another atom, e.g. a carboxyl, carbalkoxy, carbaryloxy, aldehyde, nitrile, or vinyl group, or a group <FORM:1027743/C2/1> in which R is aryl or methyl, or an aryl group, are prepared by dehydrogenating the corresponding substituted alkanes with an oxide, sulphide, or oxyacid of arsenic, antimony or bismuth or with a salt of such oxyacid at a temperature of at least 100 DEG C. In a modification a compound containing two alkenyl groups is similarly prepared.  A temperature of between 450 DEG  and 500 DEG C. is preferred and a stream of vapour of the compound may be passed through the reaction vessel packed with particles of the oxide or containing particles suspended on a carrier such as silica gel, alumina or silica.  Examples describe the preparation of methacrylic from isobutyric acid, crotonic from n-butyric acid, methacrylonitrile from isobutyronitrile, and methyl methacrylate from methyl isobutyrate using arsenic pentoxide as catalyst; styrene from ethylbenzene, methacrylonitrile from isobutyronitrile, methyl vinyl ketone from methyl ethyl ketone, ethyl vinyl ketone from diethyl ketone using antimony tetroxide as catalyst; butadiene from butene-1 using bismuth trioxide catalyst; methacrolein from isobutyraldehyde using a heated granular potassium pyroantimonate as catalyst; and phorone and isophorone from diisobutyl ketone using arsenic pentoxide as the catalyst. Compounds with two oxidizable positions, e.g. dialkyl ketones, dialkylthioketones, dialkyl vinyl compounds and dialkyl benzene may also be oxidized to the corresponding dialkenyl derivatives.
Patent GB-1447330-A (GB)
Title: Chemosterilant and larvicidal imidodithiocarbonates
IPC: A01N47/42
Filed: 1974-10-04
Abstract: 1447330 Dithioimide carbonic acid esters and their method of preparation AMERICAN CYANAMID CO 4 Oct 1974 [28 Oct 1973] 43238/74 Heading C2C Dithioimido carbonic acid esters of the general formula wherein R is chloro or methyl, R 1  is chloro or methyl, and R 2  and R 3  are each selected from lower alkyl, lower alkylthiomethyl, allyl, 2- chloroallyl, 2-methyl-allyl, propargyl, benzyl and 4-pyridylmethyl with the proviso that R 2  and R 3  cannot both be lower alkyl, are produced by reacting a dithiocarbamate of the general formula with a compound of formula R 3 -Y in which Y is a leaving group such as halo, alkyl, or aryl sulphonyl. The dithiocarbonic esters may be prepared by reacting an appropriate alkali metal or ammonium dithiocarbonate salt with an appropriate reactive halide. The compounds other than when R 3  is lower alkyl may be prepared by reacting the corresponding isocyanide dichloro compound with an appropriate mercaptan. The compounds have chemosterilant and larvicidal properties.
Patent GB-1055579-A (GB)
Title: An electrical converter connection
IPC: H02J3/34
Filed: 1963-11-04
Abstract: 1,055,579. Changing frequency. ALLMANNA SVENSKA ELEKTRISKA A.B. Nov. 4, 1963 [Nov. 14, 1962], No. 43387/63. Heading H2F. Frequency changes of the kind having for each secondary phase (such as X in Fig. 2) two converter groups 1, 2, one of which acts as a rectifier and the other of which acts as an inverter during one half cycle of the secondary voltage, are controlled by guiding control voltage derived from a control generator 14; there is a positive difference between the mean inverter voltage and the mean rectifier voltage over a half cycle, and this difference increases when the guiding control voltage increases, in order to avoid circulating current. In the arrangement of Fig. 2 the guiding voltage generator 14 is connected as shown through resistors 15 to 19 to the converters 1, 2. and the circuit includes D.C. sources 20, 21 whose voltage varies with the guiding voltage. Fig. 3 shows the guiding voltages L1, L2 seen by the individual converters 1, 2 respectively, and the effective guiding voltage X which determines the final output. The waveform X in Fig. 3 is almost sinusoidal, but as L1 and L2 are reduced, X would depart further from a sine wave unless E20 and E21 wave also reduced (Figs. 4 and 5, not shown). A modification of the above arrangement replaces the D.C. sources by diodes 22, 23 (Fig. 6. not shown) across part of the resistors 17 and 18. The final output (Fig. 7, not shown) will follow L2 for the first half cycle and L1 for the second half cycle, as in Fig. 3. -
Patent GB-1451932-A (GB)
Title: Fire resistant panels
IPC: E04B/
Filed: 1973-09-17
Abstract: 1451932 Laminates GLAVERBEL-MECANIVER 27 March 1974 [17 Sept 1973] 43537/73 Heading B5N [Also in Division E1] A fire screening glazing panel comprising a fire screening means which becomes operative when sufficiently heated, comprises a first structural ply which is a vitreous sheet and at least one other structural ply and between the first structural ply and the other or another structural ply at least one layer composed of or incorporating an intumescent hydrated metal salt selected from aluminates, plumbates, stannates, alums, borates and phosphates. The salt which may be an aluminium or alkali metal salt and may be used in admixture with polyvinyl pyrrolidone, may be applied to one surface of the vitreous ply, preferably as an aqueous solution, and another layer bonded to the ply optionally using an adhesive. The plies may also be held together by a frame, the salt optionally being present in the form of a solution. The or at least one vitreous ply of the panel may be coated with cobalt oxide or may have been chemically tempered, e.g. in a bath of potassium nitrate. The panel may be transparent, translucent or opaque. Both plies may be of vitreous material or one ply may comprise a sheet of plastics material or two sheets of glass bonded together with polyvinyl butyral. A hollow glazing unit may comprise the multi-ply panel and a second panel, which may be a single sheet or plurality of sheets, held in spaced relationship.
Patent GB-1465083-A (GB)
Title: Curable epoxy resin composition and process for tis preparation
IPC: C08G59/14
Filed: 1974-10-08
Abstract: 1465083 Epoxy resin composition NITTO KASEI CO Ltd 8 Oct 1974 [9 Oct 1973 15 Oct 1973 26 Oct 1973] 43573/74 Heading C3B [Also in Division C2] An epoxy resin comprises a reactive diluent, at least 60% by wt. of diluent consisting of in which R is C 1-7  alkyl, C 2-7  alkenyl, C 5-6  cycloalkyl, C 6-7  methylcycloalkyl, phenyl, cresyl or benzyl, R<SP>1</SP> is H or Me (not all R<SP>1</SP> need be identical) and n=1-9. I may comprise 1-150 parts by wt. per 100 parts by wt. of epoxy resin.
Patent GB-992833-A (GB)
Title: A process for the production of l-glutamic acid
IPC: C12P13/16
Filed: 1963-11-05
Abstract: L-Glutamic acid is prepared by cultivating a microorganism capable of producing L-glutamic acid in a culture medium containing beet molasses, cane molasses, thin cane juice, raw cane sugar, raw beet sugar or raw beet juice as a carbon source, an assimilable nitrogen source, necessary inorganic salts and either a C8-18 saturated aliphatic carboxylic acid, a salt or amide thereof, or a monoamine in which the hydrocarbon radical is derived from said saturated aliphatic carboxylic acid.  Specified microorganisms are Brevibacterium flavum ATCC.  No. 14067 and Brevibacterium lactofermentum ATCC. No. 13869.  Specified acids, amides, salts or amines are caprylic, capric, lauric, myristic, palmitic, margaric and stearic acids and their alkali metal or alkaline earth metal salts thereof, stearyl amide, dodecylamine, hexadecylamine and octadecylamine. Specifications 873,448, 876,943, 889,187 and 905,973 are referred to.
Patent GB-1013811-A (GB)
Title: Improvements relating to the mechanical handling of particulate materials and their introduction into a continuous stream of fluid material
Inventor: BAKER DONALD ERNEST
IPC: B01F29/60
Filed: 1961-12-07
Abstract: 1,013,811. Mixing appliances. E. T. OAKES CORPORATION. Nov. 27, 1962 [Dec. 7, 1961], No. 43906/61. Heading B1C. [Also in Division B8] Apparatus for agitating an agglomerate mass of particulate materials and mixing them with a fluid stream, as fruit into cake batter or rubber crumb into foamed latex, comprises an inclined rotating cylindrical container 10 having an open bottom and closed by a fixed plate 23 having a discharge aperture 26. The container is rotated eccentrically, being secured by a cap nut 17 on a drive shaft 16 eccentric to the container axis. The discharge aperture 26 is elliptical, angularly displaced from the lower point of the cylinder, and adjustable by a shutter 27. The discrete particles fall into a metering device 11 which may comprise a worm 30 having a helical flight 31 of varying inclination engaging in slots 32 in a disc 33 (see Specification 653,185). The material then falls into the upper end of a mixing chamber 35 into which the fluid component is pumped under pressure through a port 13 and they are mixed by a rotatable pegged stirrer 41, 42 and discharged at 14. The preferred inclination of the rotary cylinder 10 is 40-55 degrees ; it may alternatively rotate about its own axis at a constantly varying speed or have an internal agitating rib. The wetting device 11 may be a spur gear pump or one with co-operating lobed rotors. The flow of solid material may be controlled by weight by mounting the apparatus on a load cell to measure the rate of flow from the apparatus and controlling the welding device manually or automatically.
Patent GB-1111432-A (GB)
Title: Electrical control systems
Inventor: QUARMBY RAYMOND BARBER
IPC: H04Q9/00
Filed: 1964-10-28
Abstract: 1,111,432. Selective signalling systems. ENGLISH ELECTRIC CO. Ltd. 26 Oct., 1965 [28 Oct., 1964], No. 43944/64. Heading G4H. Plant items e.g. in a power station, are arranged in groups, a group of items is selected by marking a combination of cores in a multicore selection highway, and the desired item in the selected group is selected over an actuation highway. In a first embodiment, Fig. 2, one of a hundred groups XOYO, XOX1, to X9Y9, is selected by means of two banks of push buttons BX0 to BX9 and BYO to BY9. All group decoder relays RXY have a first coil 30X connected through diodes across a pair of cores 1X to 5X, those of groups prefaced X0 being connected across 1X and 2X. The second coils 30Y of relays RXY are similarly connected across cores 1Y to 5Y. Assuming buttons BX0 and BY0 are depressed to select group X0Y0, the positive side of a source 25 is connected through BX0 to 1X, through the coils 30X of relays RXY of groups prefaced X0, along core 2X to the lower contact of BX0, through closed select XY button 28, button BY0 to core 1Y, through the coils 30Y of all groups suffixed Y0, along core 2Y to the lower contact of BY0 and thence to the negative side of source 25. Since relays RXY only operate when both coils 30X and 30Y are energized, only relay RXY of group X0Y0 operates. Contacts 33 of this relay then connect item actuation relays RZ0 to RZ9 across pairs of cores 1Z to 5Z of an actuation highway. Depression of a further button BZ0 to BZ9 energizes the corresponding one of relays RZ0 to RZ9 in the selected group in a manner similar to the energization of a coil 30X , or 30Y described above. In a second embodiment, one of three groups is selected by pressing the appropriate button (S1) to (S3), Fig. 4 (not shown), to apply positive potential to three of the cores (1S) to (5S) of a selection highway (the remaining cores being negative) and to energize the associated memory relay 108. Each group decoder com-. prises three diodes 54, Fig. 3 (not shown), connected to a unique combination of cores (1S) to (5S), an associated transistor 51 being allowed to conduct only when all three associated diodes 54 are reverse biased. Conduction of a transistor 51 applies negative potential to the corresponding three of cores (1C) to (5C) of a confirmation highway and a transistor (113), Fig. 3, corresponding to the depressed button (S1) to (S3) is cut off to provide a confirmation signal at terminal 78 indicating correct selection. In response to a confirmation signal a set of buttons (W1) to (W10) is energized and when one of these is pressed, the corresponding actuation relay (RZ0) to (RZ9) in the selected group is energized over an actuation core (1W) to (10W) and through the associated conducting transistor 51. If an incorrect selection or other incorrect operation occurs, an output is obtained at 65 to actuate an alarm and prevent energization of buttons (W1) to (W10).
Patent GB-1273993-A (GB)
Title: A process for recovering energy from the decomposition of amalgam in the electrolysis of alkali metal chlorides
IPC: C25B1/42
Filed: 1969-09-05
Abstract: 1,273,993. Amalgam-forming cells for brine electrolysis. FARBENFABRIKEN BAYER A. G. Sept. 5, 1969 [Sept. 21, 1968], No. 43968/69. Heading C7B. Energy is recovered from the decomposition of amalgam in the electrolysis of alkali metal chlorides, in which the amalgam-forming cell and a current-recovering amalgam-decomposition cell are connected in series (so that voltages are directed oppositely), by periodically operating the amalgam-decomposition cell and only connecting it into the circuit when the concentration of sodium in the amalgam is greater than 0À01% by wt. The sodium concentration may be monitored and a control mechanism, e.g. two time switches for determining "on" and "off" periods respectively, only activated to switch this cell out of the circuit when the concentration falls to a predetermined limiting value of 0À01-0À05% by wt.