baber/WOPTO huggingface dataset:
Patent GB-1056016-A (GB)
Title: Shaft seals particularly for rotary positive displacement pumps
IPC: F16J15/447
Filed: 1965-10-01
Abstract: 1,056,016. Shaft seals. DRESSER INDUSTRIES Inc. Oct. 1, 1965 [Nov. 3, 1964], No. 41688/65. Heading F2B. Leakage of oil along the shafts 20, 21 of a rotary positive displacement vacuum pump 10 is prevented by means comprising a slinger 41 fixed to each shaft and a stationary surrounding sleeve 40 having annular grooves 42, 43, Fig. 4 (not shown), in its inner surface and a drain passage 44 which leads from the grooves to a point closely adjacent the slinger 41, whereby rotation of the latter causes any oil in the grooves to be pumped out through the passage 44. An inclined face 54, Fig. 6 (not shown), on the slinger 41 co-operates with an inclined face 48 on the sleeve 40 and the slinger has annular grooves 49, 50 and 51 facing the grooves 42 and 43 in the sleeve. Lubricating oil supplied from the pump gear-box 29, Fig. 2 (not shown), to the bearing 26 for shaft 21 flows through passage 34 to the bearing 25 for shaft 20 and is thence returned to the gear-box. The pressures on each side of the seals are equalized by connecting the passage 34 with a chamber 60 between the seals and the pumping chamber 15 by means of conduits 61 and 62.
Patent GB-1528143-A (GB)
Title: Multiple function recording and readout system
IPC: G03B27/54
Filed: 1975-10-15
Abstract: 1528143 Multi purpose optical apparatus IZON CORP 15 Oct 1975 [16 Oct 1974] 42213/75 Heading G2J A multi purpose optical apparatus comprises two parallel lens fiches each having the lensettes facing materials towards an optical screen and two sets of septa one between each lens fiche/screen pair. In addition a planar apertured opaque selector mask is disposed between the septa cap and its corresponding lens fiche. The screens and mask are removable. The apparatus can be used for xerography, micro copying and as a hand-held-viewer. Adaptations to act as a "movie" viewer are also disclosed.
Patent GB-1186132-A (GB)
Title: Electronic Multipliers
IPC: G01R21/127
Filed: 1968-09-05
Abstract: 1,186,132. Pulse modulation circuits. LANDIS & GYR A.G. 5 Sept., 1968 [14 Sept., 1967], No. 42220/68. Heading H4L. [Also in Divisions G1 and G4] A mark/space amplitude modulating multiplier comprises a voltage transformer 5 energized in series with a phase tuning variable resistor R y  to apply voltages about a centre point through temperature stable resistors R 3 , R 4  between bases and emitters of current source transistors T 3 , T 4  whose collectors are connected to corresponding emitters of transistors T 1 , T 2  connected as an astable emitter coupled multivibrator with capacitor C 1 ; the feed of T 1  being derived from voltage divider R 1 , R 2 . The centre point of transformer 5 is energized from a reference voltage fixed by Zener diode D 1  and is adjustable by shunting potentiometer P 1  applied over emitter-follower T 5 , while the pulsed output of the mark/space modulator is amplified by transistors T 6 , T, to energize networks C 2 , R 14 , D 2  and C 3 , R 15 , D 3  whose outputs are connected to the bases of n-channel and p-channel F.E.T.'s T 8  amd T 9 , which are opened and closed in pushpull to alternately pass current through load 18 from current transformer 6 through equal resistors R 16 , R 17 . A low pass filter is connected in series with R 18  and the voltage U m  developed thereacross represents the product of the voltage and current applied to the transformers; i.e. to the measured power.
Patent GB-1192877-A (GB)
Title: Power-Actuated Fastener-Driving Tools
IPC: B25C1/14
Filed: 1968-09-05
Abstract: 1,192,877. Fastener driving tool. OLIN MATHIESON CHEMICAL CORP. 5 Sept., 1968 [14 Dec., 1967], No. 42222/68. Heading B4C. A power-actuated fastener driving tool including a piston mounted for reciprocation in a housing, comprises a lever pivoted on an axis spaced from the piston, one end of the lever engaging the piston, and spring means engaging the lever at a point spaced from the axis and the piston, the arrangement being such that when the piston has completed its driving stroke it is returned to its initial position by the spring means acting on the lever. As illustrated the tool is cartridge actuated, and comprises a fastener magazine 98 in which fasteners are fed automatically to the driving position. The lever 74 has a bifurcated end 78 and extends through a slot 82 in cylinder wall 14. A buffer pad 90 of polyurethane or nylon is provided.
Patent GB-1012473-A (GB)
Title: Improvements in or relating to catalysts
IPC: C04B30/02
Filed: 1961-11-29
Abstract: An oxidation catalyst comprises an open mesh glass fibre fabric base coated with an adherent solid refractory oxide selected from the group consisting of Al2O3, SiO2, TiO2, ZrO2, porcelain and air-setting and hot-setting bonding mortars which are set and high alumina cements, and having a metal or an oxide of Fe, Ni, Rh, Ru, Ir or Os deposited thereon.  The catalyst may be prepared conventionally e.g. impregnation of support with precursor followed by firing. Examples are given.
Patent GB-1355719-A (GB)
Title: Process for the preparation of 3,5-dialkylpyridines
IPC: C07D213/12
Filed: 1971-09-14
Abstract: 1355719 3,5-Dialkyl pyridines; α-ethylacrolein BAYER AG 14 Sept 1971 [17 Sept 1970] 42819/71 Heading C2C 3,5-Dialkyl pyridines, in which the alkyl groups are the same or different and have 1-6 carbon atoms, are prepared by reacting an acrolein of the general formula CH 2  = CR<SP>1</SP>CHO in which R<SP>1</SP> is an alkyl group as defined above with ammonia, monomethylamine or dimethylamine, or two or more of such compounds, in the presence of water and/or a C 1 -C 3  alcohol in the liquid phase at a temperature of 180-350‹ C. and at elevated pressure. The process may be carried out in the presence of an acid having a pK of less than 6, e.g. an ammonium chloride, ammonium sulphate or ammonium acetate. In the examples (a) ethylacrolein is reacted with ammonia to give 3,5-diethyl pyridine with some 3-methyl-5-ethyl pyridine; (b) amylacrolein is reacted with ammonia to give 3,5-diamyl pyridine; (c) methyl acrolein is reacted with ammonia to give dimethyl pyridine and (d) ethylacrolein is reacted with ammonia to give 3,5-diethyl pyridine with some 3-ethyl pyridine, 3,5-methyl-ethyl pyridine, 3-ethyl pyridine and 3,5-dimethyl pyridine. Alpha-ethyl acrolein used as starting material is prepared by heating trimethylol propane in the presence of aluminium oxide and under a nitrogen atmosphere.
Patent GB-1181350-A (GB)
Title: Improvements in Electrical Switching Regulators
Inventor: NEWTON ANTHONY DAVID
IPC: H02M3/156
Filed: 1968-09-10
Abstract: 1, 181,350. Automatic control of current and voltage. BRITISH RADIO CORP. Ltd. Sept.10, 1968, No.43038/68. Heading G3R. A switching regulator of the type providing a stabilized electrical output, e.g. voltage or current, and including a switching element operated with a variable mark/space ratio in dependence on a feedback signal derived from the output is provided with a circuit operative on the feedback loop to hold the mark/space ratio at a predetermined low value during initial operation of the regulator, so that the switching element is protected against the excessively large current pulses that might otherwise occur at switch-on. As shown, a load 16 is supplied from a source 10 by way of a switching transistor 11 and a smoothing circuit 12, 13, 14; the switching mark/space ratio of transistor 11 is controlled by a pulse generator 20, e.g. a Schmitt trigger circuit, in dependence upon a feedback signal derived on line 22 from a differential amplifier 33 which compares a reference signal, derived from a voltage divider 34, 35, with a signal derived from the output by way of line 30, Zener diode 31 and resistor 32. The potentiometer 35 of the voltage divider is shunted by a capacitor 40 and a transistor 41 having its base connected to the regulator output by way of a Zener diode 44 and a resistor 45. When the regulator is first switched on, the transistor 41 is rendered conductive to short-circuit potentiometer 35 so that the reference input to the differential amplifier is low, and the mark/space ratio of the regulator is held at a low value; as the output voltage builds up, Zener diode 44 conducts to render transistor 41 non-conductive and capacitor 40 then charges up so that the reference signal gradually builds up to its normal value. When the regulator is switched off the transistor 41 conducts as soon as the regulator output is insufficient to overcome the Zener voltage of diode 44, and this discharges capacitor 40 in preparation for the regulator being switched on again.
Patent GB-1440084-A (GB)
Title: Hydraulic hose
IPC: F16L33/207
Filed: 1973-09-14
Abstract: 1440084 Hose AEROQUIP GmbH 14 Sept 1973 [16 Sept 1972] 43269/73 Headings F2P and F2G A hose comprises a core made of an elastomer, a sheathing comprising a plurality of layers of steel wire helically wound around the core and an outer covering wherein the ratio of the wall thickness of the core to the wall thickness of the sheathing is between 1 : 1À1 and 1 : 1À5. The hose may be attached to a hose clasp comprising, Fig. 1, a nipple 3a and an outer sleeve 5a which engages in a recess 9a of the nipple. Resilient rings 13a and 13a<SP>1</SP> are seated in grooves 11a and 11a<SP>1</SP>. When the hose is inserted into the clasp, a flange 27a engages the hose core and strips said core from the hose sheathing. The outer covering of the hose is stripped as far as the rings 13a. The hose sheathing is gripped by ribs 21a and grooves 23a and the sleeve can radially expand in the region of the groove 17a to accommodate displaced hose material. The hose may alternatively be attached to a clasp (Fig. 3) having a screw closure and comprising a nipple 1 and sleeve 11.
Patent GB-1372848-A (GB)
Title: Devices for pipetting samples
IPC: B01L3/02
Filed: 1971-10-27
Abstract: 1372848 Extruding tube UNILEVER Ltd 27 Oct 1971 [29 Oct 1970] 43275/72 Divided out of 1372847 Heading B5A [Also in Divisions G1 and C6] Heated wax or agar-agar is extruded between concentric tubes 20 and 21 of an extruder cooled by the flow of water in a jacket 24, to form a pipette preferably of clover leaf crosssection, the extruded portion of the tube is used in the usual manner of a pipette under suction and pressure applied through a line 23, and the used portion is severed by a cutter 27.
Patent GB-939441-A (GB)
Title: Improvements in valve assembly for pressurized containers
IPC: B65D83/14
Filed: 1961-12-05
Abstract: 939,441. Storing gases; forcing liquid by gaseous pressure. D. M. ROCKWELL. Dec. 5, 1961, No. 43488/61. Classes 8(2) and 102(2). A valve assembly for a container 5 for gases or liquids under pressure, comprises a cup 8 having a peripheral wall and a base, the latter having an opening 35 therein co-operating with which is a spring-loaded pressure relief valve 40, and means whereby fluid may be withdrawn from the container through the middle portion of the base. The container may be of the type which is discarded after the contents have been discharged therefrom and has an open end provided with a bead 7 over which fits a flange 9 of the peripheral wall of the cup 8, the latter being retained in the open end of the container by deformation of the peripheral wall to form a projection 12. The cup 8 has a central cylindrical wall 14 which is screw-threaded to receive a discharge valve adapter 25, the wall 14 terminating in an apertured flange 15 having a sealing gasket 16 towards which is spring-urged a normally closed discharge valve member 20. The adapter 25 is preferably screw-threaded at 29 to fit an appliance 27 which includes a control valve (not shown) and has an apertured stem 31 for opening the valve member 20 when the appliance is screwed into-position. Alternatively, the adapter may be integral with the appliance. The screw threads 29 on the adapter 25 form with the peripheral wall of the cup 8 a restricted spiral passage for fluid which may be released by the relief valve 40. In a second embodiment, Fig. 5 (not shown), the discharge valve member is dispensed with, the wall 14 being imperforate and an adapter being provided with means for perforating the wall. In a third embodiment, Fig. 3 (not shown) the wall 14 is dispensed with, the base of the cup 8 being imperforate for perforation by an adapter. For protection during shipment or handling a flexible plastic protecting cover, Fig. 6 (not shown), is provided which is stretched to fit over the flange 9 of the peripheral wall of the cup. The relief valve 40 may be disposed within a tubular shell, Fig. 7 (not shown), which is secured to the base of the cup.
Patent GB-1198672-A (GB)
Title: Reforming of Hydrocarbons.
Inventor: TOPSOE HALDOR FREDERIK AXEL
IPC: C01B3/40
Filed: 1967-09-26
Abstract: 1,198,672. Gas manufacture. H. F. A. TOPSOE. 26 Sept., 1967 [27 Sept., 1966], No. 43689/67. Heading C5E. [Also in Division C1] Gas mixtures are made by reacting a hydrocarbon feed in the gas phase with steam and, optionally, hydrogen or hydrogen and carbon monoxide at 550-1000‹ C. and at a pressure of 1-250 kg./cm.<SP>2</SP> in the presence of a catalyst comprising a metal of Group VIII and of an activator. Suitable activators are ammonia, hydrazine, hydrazines substituted by alkyl groups having 1-10 carbon atoms, and aliphatic amines having 1-10 carbon atoms and are used in amounts of 0À01 to 3% by weight, calculated as ammonia, of the hydrocarbon feedstock. The activator can be added continuously or intermittently into the reaction mixture either immediately before the latter is introduced into the reforming reactor or prior to a hydrodesulphurisation of the feed. Ammonia can be added to the feed-water for steam-reforming and the ammonia-containing water separated from the product gas can be recycled to the feed-water. Suitable catalysts are made by impregnating a porous carrier, e.g. magnesium aluminium spinel, with Ni, Co or Fe or by incorporating the catalytic metal during formation of the spinel by coprecipitation; oxides of potassium and calcium can be included in the catalysts as promoters. Suitable feedstocks are light distillates of upper boiling point 250‹ C. which contain up to 25% of aromatics, naphtha, liquified propane and butane and refinery gases containing up to 25% of olefins. The O : C ratio is between 0À8 and 10; to prepare a reducng gas it is below 2; to prepare a town gas it is between 1À5 and 3; to prepare a synthesis gas for ammonia production it is between 3 and 6; and to prepare concentrated hydrogen for methanol synthesis it is between 5 and 10.
Patent GB-1137468-A (GB)
Title: Alkyl-substituted ethylenethiourammonosulphides
Inventor: LEHMANN HELLMUTH
IPC: C07D285/36
Filed: 1967-09-26
Abstract: 1,137,468. Alkyl-substituted tetrahydro- 1,3,6 - thiadiazepin - 2,7 - dithiones. FARBENFABRIKEN BAYER A.G. 26 Sept., 1967 [5 Oct., 1966], No. 43789/67. Heading C2C. [Also in Division A5] Novel acaricidally active alkyl-substituted tetrahydro - 1,3,6 - thiadiazepin - 2,7 - dithiones of the formula in which R is C i - s  alkyl, and R 1  and R 2  each are hydrogen or C 1-3  alkyl are prepared by introducing air or oxygen into an aqueous solution of the corresponding ethylene-bis-dithiocarbamate of the formula wherein Me is a univalent metal while maintaining the pH at between 7 and 9À5 by the addition of acid. Metal salts which contain as cation metals which occur in different valency states, e.g. nickel, manganese or iron, may be used as catalysts. 1-Pentylethylenediamine is made by reacting 1,2-dibromoheptane with ammonia at a pressure of 5 atmospheres and at a temperature between 70‹ to 80‹ C.
Patent GB-1204747-A (GB)
Title: Aviation hydrocarbon fuels
Inventor: FORD PETER THOMAS
IPC: C10G29/24
Filed: 1968-09-16
Abstract: 1,204,747. Purifying oils. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 16 Sept., 1968, No. 43863/68. Heading C5E. A method of removing partly or wholly traces of metal ions from an aviation hydrocarbon fuel after contamination of said fuel by said ions comprises contacting the fuel with a solid contacting material for forming an insoluble product with the metal ions and separating the treated fuel from the insoluble product and the solid contacting material. The contacting material may be a carboxylic acid or a derivative thereof such as oxamide or salicylaldoxime, a sulphonic acid, a heterocyclic ketone, a benztriazole or a sulphide of a metal of one of groups II B  or VIA of the Periodic Table.
Patent GB-950918-A (GB)
Title: Improvements in or relating to vehicle wheel suspensions
Inventor: TANTILINGER KEITH WALTON
IPC: B60G5/047
Filed: 1962-11-21
Abstract: 950,918. Road vehicle spring suspensions. FRUEHAUF CORPORATION. Nov. 21, 1962, No. 44084/62. Heading B7D. In a road wheel suspension unit engageable with one or more similar units to provide an equalized tandem or multiple axle suspension for a semi-trailer, each of laminated springs 62 secured to an axle 90 is provided at one end 61 with an inclined cam surface 60 and engages at the other end 64 with a pivoted yoke 42 carrying an inclined cam plate 50. When the units are moved into engagement the cam surfaces 60 co-operate with the cam plates 50 to disengage the ends 61 of the springs of one unit from a bumper 74 on the frame of the unit and to disengage the pivoted yokes together with the ends 64 of the springs on the other unit from bumpers 70 on the frame. When the units are fully engaged the pivoted yokes 42 act as equalizing levers engaging the ends of the springs of each unit. The frame of each unit comprises transverse members 36, 38 connecting longitudinal members 34 carrying brackets 80 for maintaining the alignment of the springs and hangers 40 which support the yokes 42 and radius rods 100. In another embodiment, the pivoted yokes do not extend beneath the bumpers on the frames and the frames carry tongues which engage adjacent frames to ensure correct alignment of the units.
Patent GB-892085-A (GB)
Title: Oscillating lamp support
IPC: A61B6/00
Filed: 1960-12-23
Abstract: 892,085. Therapeutic lamps. CUFFMAN, J. C. Dec. 27, 1960, No. 44393/60. Class 81 (2). [Also in Group XI] An oscillating support for an electric lamp, which may be used for therapeutic applications or for display purposes, comprises a chassis having means for pivotally supporting a lamp and for oscillating the lamp support on an axis passing through the lamp, including an electric motor operating timing means controlling the supply of current to the motor and the lamp. In the form shown, the lamp 50 is carried in a socket 49 mounted in a U-shaped support 100 carried by pivots 102, 104 on spaced frames 60, 70 and rocked by means of a link 96 carried by a crank 92 on the shaft 88 of a gear-box 86 driven by an electric motor 32. The shaft 88 also carries a gear 90, meshing with a gear 112 which drives a worm 116 to rotate a gear 118 with which a cam plate 124 is pressed into frictional contact by a spring plate. The cam plate is carried by a shaft 120 provided with a setting knob and has a circular face with a flattened portion 132. The end 27 of an arm 18 rides on the cam plate, the opposite end of the arm carrying means for closing the contacts of a switch in the circuits of the motor and lamp. Rotation of the setting knob causes the end 27 of the arm 18 to ride on the circular face of the cam plate 124, closing the lamp and motor circuits. The motor then rotates the cam plate until the flattened face 132 is reached, the switch then opening the circuits of the lamp and motor.
Patent GB-1339294-A (GB)
Title: Rolling bearing with cage segments made of sheet metal
IPC: F16C33/54
Filed: 1971-09-24
Abstract: 1339294 Bearing cage W SCHAEFFLER and G SCHAEFFLER [trading as INDUSTRIEWERK SCHAEFFLER oHG] 24 Sept 1971 [26 Sept 1970] 44734/71 Heading F2A A rolling bearing in which a one-piece cage cannot be fitted is provided with sheet metal cage segments 1, 2 comprising end-ring portions joined together by webs, the material 9 of the end-ring portions being folded over. The abutting edges 10 of the segments may be chamfered. The folded portions may extend into the terminal portions of the webs.
Patent GB-1406852-A (GB)
Title: Corpuscular beam apparatus
IPC: H01J37/24
Filed: 1972-09-28
Abstract: 1406852 Automatic control SIEMENS AG 28 Sept 1972 [28 Sept 1971] 44759/72 Heading G3N The current in one or more electromagnetic lenses of a corpuscular beam apparatus e.g. an electron microscope is controlled by a digital counter which can be fed with stepping pulses and which is connected by a digital to analogue converter to the current control device. The counter is preferably a forwards/backwards counter and stepping pulses are applied either individually or in trains (the frequency or number of pulses in which may be regulated) via manually operable switches. As shown, current in lens L is controlled by differential amplifier D and power amplifier V fed with the voltage across resistor M in series with lens L, a coarse or fine setting voltage supplied via R 1  from potentiometer R 4 , R 5  and fine setting voltage via R2 from digital to analogue converter 12. Counter 7 provides the input to the converter and is supplied with forward or backward pulses from manual keys 17, 18 respectively. A second counter 23 with display devices 21 either shows the same reading as counter 7 or may be set to zero at a particular reading of 7 and may then be used to indicate the defocusing value.
Patent GB-1404056-A (GB)
Title: Methods of forming seams using sewing machines
IPC: D05B35/10
Filed: 1972-09-29
Abstract: 1404056 Sewing machine work guide PFAFF INDUSTRIEMASCHINEN GmbH 29 Sept 1972 [1 Oct 1971] 44973/72 Heading D1C A work guide presents a guide edge 8 (provided by a line of pins 7 in the embodiment shown) disposed at an acute angle to the direction of work feed, and includes a work engaging place 21 forward of and to one side of the stitching position so that the act of feeding urges the work to pivot about 21 into abutment with the edge 8. A further portion 10 of the guide is disposed parallel to the feeding direction. The guide comprises a stack of spaced plates each pair receiving between them one ply of the workpiece, work gripping thickenings (22, Figs. 2 and 4 not shown) on the plates constituting the place 21. In another embodiment (Fig. 5 not shown) the plates are urged together at one end by an adjustable arm (37) to provide the place 21.
Patent GB-1283994-A (GB)
Title: Electrohydraulic control device for hydraulic operators or loads
IPC: F15B11/08
Filed: 1970-09-22
Abstract: 1283994 Hydraulic motor control circuits ROBERT BOSCH GmbH 22 Sept 1970 [23 Sept 1969] 44977/70 Heading F1P A control device for effecting supply and return of hydraulic fluid to and from at least two actuators (not shown) selectively comprises a pressure fluid inlet 6, a return outlet 7 and a conduit 47 connected to each actuator and the device also comprises a spring-closed main valve 55 for each actuator open to a combined inflow and outflow passage 20, 48 and openable when one end 52 of a spool 51 carried thereby is subjected to hydraulic pressure at 58 controlled by spool valve 63 when displaced to the right by a single-stroke solenoid 62; the device also comprising an auxiliary valve 8 connected upstream of all the main valves and which in the open position shown connects inlet 6 with the upstream side of each valve 55 and when moved to the left by a solenoid 28 cuts off said supply inlet 6 from said passage 20, 48 and connects the latter to the return 7. The device also includes a throttle orifice 36 in a cup-member 34 which latter when solenoids 28, 62 are deenergized and valves 13, 61, 55 are in the positions shown becomes unseated to connect inlet 6 to return 7. On energizing one or other of solenoids 62 pressure fluid having passed through orifice 36 and passages 37, 67 is fed to chamber 58 and displaces spool 51 to open valve 55 thereby extending the associated actuator. If now solenoid 28 is energized the inlet 6 is isolated from passage 20, 48 and the latter is connected to return 6 to effect the return stroke of the actuator. The hydraulic actuators referred to are single acting but in a modified device the actuators are double acting.