baber/WOPTO huggingface dataset:
Patent GB-1449008-A (GB)
Title: Hydraulic steering brake for a vehicle
IPC: F16D66/02
Filed: 1973-09-19
Abstract: 1449008 Steering by differential braking KOMATSU SEISAKUSHO KK 19 Sept 1973 [22 Sept 1972] 44034/73 Heading B7H [Also in Division F2] An hydraulic steering brake for a tractor is actuated by a brake pedal 1 or lever connected by a linkage 2 to a control valve 3 which controls the supply of hydraulic pressure to an hydraulic cylinder 5 for actuating a brake band lever 4. The band, not shown, engages a steering clutch, not shown. The control valve 3, Fig. 2, has spools 9 and 10 actuated by a rod 1 moved to the right by a roller 38 provided at the lower end of linkage 2. When the pedal 1 is not depressed the roller 38 is clear of rod 12 such that the spools 9 and 10 are urged by springs 14 and 20 to the left; hydraulic fluid from a source p is fed through port a to a port b, through passage 32 into the chamber b<SP>1</SP> so as to urge the piston 28 to the right until the piston 28 is stopped by a stop m to release the brake. When the brake pedal is slightly depressed within the limits of its lost motion, the brake remains released. Further depression of the pedal to produce slow braking causes the control valve to move into the Fig. 4 (not shown) position so that fluid under pressure flows to a chamber c<SP>1</SP> in the cylinder 5, thereby urging piston 23 to the left and operating the steering brake. When the brake pedal is depressed for quick braking the control valve moves to the Fig. 5 (not shown) position to increase the braking force. When the pedal is depressed for emergency braking the pedal travel is increased, thereby causing the rod 12 to move the spool 17 to the right and greatly increasing the hydraulic pressure in chamber i while chamber b<SP>1</SP> of cylinder 5 is drained through port d. The piston 28 is then free to be moved by springs 29a, 29b. Because pressure in chamber b<SP>1</SP> becomes zero prior to that of chamber c<SP>1</SP> the braking force is exerted by the piston 23 under the tension of springs 29a and 29b acting on the piston and the steering brake is not released during emergency braking. If the tractor engine stops or the hydraulic circuit is damaged pressure fluid from source p is not fed through port a. Should the pedal be almost fully depressed, the piston 23 is urged by piston under the action of springs 29a and 29b to operate the brake as for emergency braking. The brake may be released in these circumstances by pressure p fed through the port a, passage 8, the port b and chamber b<SP>1</SP> of cylinder 5 thus urging the piston 28 to the right. Should the engine or hydraulic circuit be damaged a manual pump 34 supplies pressure to the chamber b<SP>1</SP>. Should the gap between the brake drum (not shown) and brake lining (not shown) increase the stroke of piston-rod 24 increases, such that a sensor 36 connected to a warning device 37 is engaged by the rod 24.
Patent GB-1115819-A (GB)
Title: Improvements relating to vacuum switching
Inventor: REECE MICHAEL PETER
IPC: H01H33/16
Filed: 1965-10-18
Abstract: 1,115,819. Vacuum switches; arcing preventing. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 6 Jan., 1967 [18 Oct., 1965], No. 44035/65. Heading H1N. The high-frequency oscillations and attendent high voltage swings brought about by the capacitance and very rapid deionization in the small gap between the open contacts of a vacuum switch are overcome by connecting a damped inductor 3 in series with each terminal of the vacuum switch 1. A damping resistor 4 may be directly connected across the inductor as shown or transformer coupled to it. The invention may be applied to a group of seriesconnected vacuum switches (Fig. 2, not shown) having voltage dividing capacitors and resistors.
Patent GB-1435860-A (GB)
Title: N,n-bis-phosphonomethyl-acrylamides
IPC: D06M13/447
Filed: 1974-10-11
Abstract: 1435860 N,N - Bis - (phosphonomethyl)- acrylamides BAYER AG 11 Oct 1974 [12 Oct 1973] 44168/74 Headings C2P and C2C Novel compounds of Formula I where R is H, CH 3  or C 2 H 5  and R<SP>1</SP> and R<SP>2</SP> are C 1 -C 4  alkyl optionally substituted by halogen; hydrogen; alkali metal; alkaline earth metal; or ammonium; or R<SP>1</SP> and R<SP>2</SP> together with the O atoms and the P atom form a 5- to 7 -membered heterocyclic structure, may be prepared by reacting a compound of Formula II (II) where X is Cl or Br with an ester of Formula III where R<SP>3</SP>, R<SP>4</SP> and R<SP>3</SP> are each C 1 -C 4  alkyl optionally substituted by halogen or R<SP>3</SP> and R<SP>4</SP> together with the O atoms and the P atom form a 5- to 7- membered heterocyclic structure and optionally hydrolysing and converting to a required salt. In examples N,N - bis(chloromethyl) - methacrylamide is prepared by reacting N-methoxymethylmethacrylamide or methacrylamide with paraformaldehyde and thionyl chloride. The compounds of Formula I may be polymerized to form homopolymers or copolymers with other polymerizable monomers. The compounds may also be added as flame retardants to textiles, plastics materials and paper.
Patent GB-1459556-A (GB)
Title: Reflector arrangement
IPC: G01N21/53
Filed: 1974-10-11
Abstract: 1459556 Reflectors E SICK [trading as ERWIN SICK OPTIK-ELEKTRONIK] 11 Oct 1974 [24 Oct 1973] 44174/74 Heading G2J A reflector arrangement (e.g. for redirecting a beam of incident light to a detector) comprises a reflector 12 with an aperture 11, and a sighting plate 14 in fixed relation thereto. When the incident light beam is correctly aligned with the reflector 12 the pin hole 11 images the source on plate 12, which consists of corner cube reflectors. The reflector arrangement is mounted for adjustment about two axes which are both arranged to be ; substantially perpendicular to the incident beam when roughly aligned. The front surface of plate 12 is protected by a cover plate 37. The sighting plate 14 is normally obscured by removable screws 21. The device is placed opposite an arrangement comprising projector/receiver to detect smoke or the like (e.g. in a chimney). Purging gas can enter via 36 to prevent the smoke or like forming deposits within the housing.
Patent GB-1369824-A (GB)
Title: Tie indexing devices for railway track maintenance machines
IPC: E01B27/16
Filed: 1971-09-22
Abstract: 1369824 Indexing device for railway maintenance vehicle CANRON Ltd-CANRON LIMITEE 22 Sept 1971 [2 Oct 1970] 44188/71 Heading E1G An indexing device 11 fixed to a track maintenance vehicle's chassis 20 for terminating movement of a workhead (e.g. a tamping device, a spike driver or a rail bolter) to locate it above a work station comprises a shoe 31 having its lower edge resiliently biassed into engagement with the ballast and carrying a finger 35 pivotal relative to the shoe so that a sleeper, on engaging the finger, moves it to actuate a switch 42 to terminate the workhead's movement. The finger may have a pinion 38 engaging a spring loaded rack 39 carrying a cam 41 engageable with the switch 42. The shoe 31 is mounted on a hydraulic piston and cylinder, the piston rod 15 being pivoted to the chassis 20 and the cylinder being slidable in guides 24, 25. The switch 42 may activate the vehicle's brakes or stop the forward movement of one workhead relative to another workhead along the chassis.
Patent GB-1168982-A (GB)
Title: Vehicle Lift
Inventor: FARNFIELD RONALD EDWARD
IPC: B66F7/02
Filed: 1965-10-19
Abstract: 1,168,982. Garage lifts; safety catch gear. TECALEMID (ENG.) Ltd. 19 Oct., 1966 [19 Oct., 1965], No. 44272/65. Headings B8H and B8L. [Also in Division B7] The platform of a three-post vehicle lift comprises a V-shaped frame 16, 18 supported from a drive post 60 and support posts 62, 64 and provided with wheel tracks 22, 24, enabling a vehicle to be moved to a position straddling the platform, and with body-engaging pads 58. The pads 58 are slidably supported on arms 26, 28, 30, 32 which are rotatably mounted on saddles 34, 36, slidably supported on the wheel track 22, and on saddles 38, 40, slidably supported on the frame 16, 18. The end 20 of the V-shaped frame 16, 18 is suspended from a nut, Fig. 3 (not shown), on a rotatable screw shaft suspended in the drive post 60 and driven by an electric motor 102. Guide rollers are provided on the end 20 of the frame 16, 18 for engagement in guides in the post 60 to prevent tilting of the platform. Cables, Fig. 2 (not shown), pass from anchorages adjacent the tops of the posts 62, 64, through the frame 16, 18 and down to anchorages adjacent the base of the drive post 60. Stands, Figs. 9-11 (not shown), may be provided on to which a raised vehicle may be lowered to be supported by its wheels. Safety devices.-In addition to upper and lower limit switches in ascend and descend circuits of the motor 102, a further switch which, is adapted to stop the motor in the event of a reduction in or loss of tension in either of the support cables, is provided. When the tension in the cable is reduced, the end of the cable at the anchorage adjacent the base of the post 60 is spring-urged downwardly to actuate a push rod controlling the switch. Means are provided to cancel operation of this switch when the platform engages the ground. The platform is provided, adjacent each support post 62, 64, with a pulley 74, Fig. 8, under which the support cable 66 passes, the pulley being mounted on a rotatable shaft 150. Rotatably mounted on the shaft is a ring clutch comprising a bearing portion 156 supporting a plate 158 formed with an aperture 160 through which extends a rigid bar 148 secured in the support post. The plate 158 is normally maintained horizontal by a jockey pulley 168 resting on the cable and mounted in a bracket 164 which is urged downwardly about a pivot 166 on the platform by a spring plunger 172 and which is coupled to a lever device 162 secured to the portion 156 of the clutch. When the tension in the cable is lost, the bracket 164 pivots downwardly thereby causing angular movement of the ring clutch about the shaft 150, which causes the plate 158 to grip the bar 148.
Patent GB-1014943-A (GB)
Title: Improvements in or relating to buckles
Inventor: COOPER DANIEL WAUMSLEY
IPC: A44B11/28
Filed: 1963-11-09
Abstract: 1,014,943. Buckles. G. Q. PARACHUTE CO. Ltd. Oct. 21, 1964 [Nov. 9, 1963], No. 44300/63. Heading E2A. A buckle comprises a sliding bar 12 which is engageable with a loop in a strap end portion, a frame against which said loop is held by the said bar and a hook member 13 to which another strap end portion 18 is connected in use and which hooks on to the said frame the hook member and frame being forced apart by one or more springs which in use press the hook member against the loop around the sliding bar to prevent slipping as the load on the buckle fluctuates. In the construction shown a single leaf spring 16 is used which is riveted at its centre to the hook member. The bar 12 as shown has concave end surfaces which engage the inner surfaces of the frame sides but in a modification it could slide in grooves in the sides of the frame. The surface of the bar can be roughened over the central portion to increase the friction between the bar and the loop.
Patent GB-1539007-A (GB)
Title: Process for the preparation of 5-amino-2-propargyloxy-n-n-butylbenzamide
IPC: C07C237/44
Filed: 1977-10-26
Abstract: After 5-nitro-2-chlorobenzoic acid has been converted to 5-nitro-2-propargyloxy-N-n-butylbenzamide, the latter product is subjected to the action of a reducing agent to produce 5-amino-2-propargyloxy-N-n-butylbenzamide. This benzamide has antiinflammatory, analgesic and muscle-relaxing properties.
Patent GB-988478-A (GB)
Title: Improvements in quick-release buckles for safety harness
Inventor: GUNTHER RUDOLF AUGUST
IPC: A44B11/25
Filed: 1962-11-28
Abstract: 988,478. Buckle fastenings. H. LEEK. Nov. 28, 1963 [Nov. 28,1962]. No. 45025/62. Heading E2A. A quick release buckle comprises a female element provided with a pivotally mounted hand lever 14 which in turn carries a pivotally mounted pawl 18 which is adapted on movement of the lever in one direction to pass through a slot 24 in a male element 1 of the buckle and to engage behind a fixed abutment of the female element to latch the two elements together the arrangement being such that on subsequent movement of the lever in the opposite direction the pawl is disengaged from the abutment whereon it is free to pivot in relation to the lever to effect its disengagement from the slot of the male element to release the latter. In the construction shown the female element is provided with a slot in a base 4 and one edge of this provides the abutment engaged by the pawl. The base 4 is part of a channel shaped member having two side walls between which the lever 14 is pivoted. Both the pawl and the lever are spring loaded and the side walls of the channel shaped member are provided with inturned lugs 7 and 9 to guide the male element. The female element is also provided with a sliding bar 8 arranged in a slot for connecting it to a length of webbing. The male element has a slot through which a length of webbing is looped. Clockwise movement of the pawl in the hand lever is limited by a stop 20. In a modification an end stop can be provided to limit the inward movement of the male element in the female element and this may have an overhanging portion to act as guide means for the male element in which case the lugs 9 are omitted.
Patent GB-1194353-A (GB)
Title: Improvements in and relating to Connection Arrangements for Multi-Conductor Cables.
Inventor: SEIBT REINER
IPC: H01R13/193
Filed: 1967-10-04
Abstract: 1,194,353. Two part couplings. WAGGONBAU BAUTZEN VEB. 4 Oct., 1967, No. 45129/67. Heading H2E. A connector for multi-conductor cables comprises a body 3 having projections 7 and carrying pins 1<11> which are inserted into slit resilient contact sleeves 1<1> embedded in an elastic member 2 located in a second body 4. When clamping screws 5, which hold the bodies 3 and 4 together, are tightened, pressure caused by projections 7 displacing the material of member 2 is exerted on the sleeves 1<1> to cause them to grip the pins 1<11>. In another embodiment (Fig. 2, not shown) the elastic member, which is of circular crosssection, is enclosed by a compression band which, on being tightened produces contact pressure between the sleeves and the pins.
Patent GB-1056456-A (GB)
Title: Process for the production of vulcanisable multipolymers
IPC: C08F210/18
Filed: 1963-11-15
Abstract: A process for the production of vulcanizable multipolymers by low-pressure polymerization of aliphatic 1-olefins having two to four carbon atoms and multiple olefins in the presence of Ziegler catalysts and inert diluents, comprises polymerizing ethylene and propylene and/or butene-1 and at least one multiple olefin in the molar ratio 1:1:0.005 to 1:5:0.5 at -20 DEG  C. to +80 DEG  C. by means of a mixed catalyst of a hydrocarbon-soluble vanadium compound and a hydrocarbon - soluble halogen - containing organo-aluminium compound at a pressure of 1 to 5 atmospheres and a mean residence period of 5 to 40 minutes in the polymerization vessel and a monomer conversion of 30 to 60%. Multiple olefins exemplified are biscyclopentadiene, tricyclopentadiene, hexadiene-1,4, hexadiene-1,5, pentadiene-1,4, decadiene-1,9, and trivinylcyclohexane; also specified are 2-methyl pentadiene-1,4 and norbornylene.  Catalysts exemplified are vanadium tetrachloride with diethyl aluminium chloride, and VOCl3 or VO(O-isobutyl)3 with ethyl aluminium sesquichloride. Other catalyst components specified are ethyl aluminium dichloride and dibromide. The reaction may be continuous. The usual inert diluents including chlorinated hydrocarbons may be used.  The multipolymers are recovered by precipitation with alcohol or after washing with water by driving off the solvent with steam. The multipolymers are vulcanized using conventional agents and methods.
Patent GB-1474509-A (GB)
IPC: F16D48/06
Filed: 1975-10-31
Abstract: 1474509 Electromagnetic friction clutches NCR CORP 31 Oct 1975 [4 Dec 1974] 45224/75 Headings F2C and F2L An electromagnetically-operated helical spring clutch has a spring 20 of ferromagnetic material, a driven member 16 having a body 54 of non- ferromagnetic material and a cylinder 70 of ferromagnetic material, the cylinder 70 being within part of the spring 20 so that energization of a stationary electromagnetic coil 46 causes the spring 20, which has one end connected to a driving member 58, to tighten on to the cylinder 70 and transmit drive. The driving member 58 is fixed on a tubular shaft 24, on which the driven member 16 is rotatably mounted, a shaft 22 of hexagonal cross-section within a hexagonal bore of shaft 24 being driven by a motor 28 through a pulley 26. The free end of spring 20 (of wire of square cross-section) lies within a central bore 74 of a ferromagnetic washer 50 fixed to the housing 40 of the coil 46, drag on this end of the spring causing the tightening when the coil is energized. The cylinder 70 may be a layer of nickel formed on a brass cylinder 72. The driven member may be provided with a cam, as shown in Fig. 5, with which a follower roller 126 engages, to open a switch 102 at either of two low points 124, to de-energize coil 46. The body 54 of the driven member 16 can be of acetal resin. The clutch may drive a paper feed mechanism on a printer.
Patent GB-958294-A (GB)
Title: Process for the production of tetrabromophthalic acid anhydride
Inventor: HAHN HEINRICH
IPC: C07C51/567
Filed: 1961-12-18
Abstract: Tetrabromophthalic anhydride is prepared by adding simultaneously at 60 to 260 DEG C. from 4 to 6g. atoms of bromine and from 0.5 to 3g. atoms of chlorine to each mol. of phthalic anhydride in concentrated sulphuric acid containing 20 to 65% of free SO3, a small excess of bromine over chlorine being constantly maintained during the course of the reaction. Preferably about 5.2g. atoms of bromine and about 1.1g. atoms of chlorine are employed, and preferably 1.6 to 3.3 parts by weight of SO3 per part of phthalic anhydride.  A bromination catalyst may be used, e.g. iodine with powdered iron.
Patent GB-1182159-A (GB)
Title: Method for Inhibiting Polymerisation of Conjugated Dienes.
IPC: C07C7/20
Filed: 1967-09-20
Abstract: 1,182,159. Inhibiting diene polymerization. JAPANESE GEON CO. Ltd. 20 Sept., 1967 [22 Sept., 1966], No. 45325/69. Addition to 1,182,157. Heading C5E. The tendency of conjugated dienes to polymerize in polar solvent solutions at elevated temperatures, e.g. during solvent extraction or extractive distillation separation processes, is inhibited by adding thereto an aromatic mercaptan, e.g. thiophenol or thiosalicylic acid. The polar solvent may be acetonitrile, dimethylformamide, acetone or N-methylpyrrolidone, and water may be present. The solutions may additionally contain any of the inhibitors disclosed in Specifications 1,182,157 and 1,182,158, i.e. an α-#-unsaturated nitrile, an aliphatic nitro compound, α-nitroso-#-naphthol, isatine, cinnamic aldehyde, aldol or morpholine; or any of the following previously known inhibitors: sodium nitrite, hydroquinone, Methylene Blue, sulphur, tert.-butylcatechol, #-naphthylamine, furfural, benzaldehyde or an aromatic nitro compound. Examples are given of solutions containing such additional inhibitors.
Patent GB-1137958-A (GB)
Title: Improvements in or relating to superconductive devices and to circuits including such devices
Inventor: BALDWIN JOHN PATRICK
IPC: H01L39/22
Filed: 1966-10-12
Abstract: 1,137,958. Superconductive circuits. MULLARD Ltd. 13 Dec., 1967 [12 Oct., 1966], No. 45543/66. Heading H3B. [Also in Division H1] A superconductor storage device comprises a superconductive loop one arm of which contains a Josephson junction, and a control conductor arranged so that the junction can be switched between the superconducting and the normal states, information stored in the loop as a circulating current being read-out by switching the Josephson junctions to the normal state and sensing the voltage developed across the junction. As shown, Fig. 1, input and output conductors 2, 2 are joined by a storage loop 3 which comprises two Josephson junction 4, 5 connected in series by a bridge 6, and a parallel arm 7. A control conductor 1 crosses both arms of the loop and when energized drives the junctions 4, 5 from the superconducting state (tunnelling with no voltage drop) to the normal state (quasiparticle tunnelling). Information is stored by passing a writing current through the loop between conductors 2, 2, energizing control conductor 1 to drive the junctions 4, 5 normal thus diverting all the current through arm 7, removing the control current to return the junctions 4, 5 to the superconducting state, and then removing the writing current so that a circulating current is set up in the loop due to the trapped flux. The device is read by driving junctions 4 and 5 normal whereupon a voltage is developed across them with a polarity depending on the direction of the stored current. The device may be produced in the form of thin films of superconductor material on a substrate. The superconductor material may be niobium applied by vapour deposition or sputtering in vacuo through a stencil. The Josephson junction insulation may be of niobium oxide produced by admitting oxygen to the reactor after depositing the loop and is of the order of 10 Angstroms thick. The arm 7 and the bridge 6 are insulated from the control conductor 1 by thick films of niobium oxide or silicon monoxide (not shown). If difficulty is experienced in maintaining the thin layer of niobium oxide during deposition of niobium to form bridge 6, this member may be of lead, In the vapour deposition process the source of material may comprise a niobium rod the end of which is subjected to electron bombardment. A superconductive ground plane may be provided to reduce the control current required to switch the device. A plurality of such devices may be produced on a single substrate to form a computer storage matrix.
Patent GB-1064472-A (GB)
Title: Improvements relating to apparatus for filling containers
Inventor: FRYD ERIC MICHAEL
IPC: G01G13/00
Filed: 1962-12-04
Abstract: 1,064,472. Weighing apparatus; fluid pressure operated. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 3, 1963 [Dec. 4, 1962], No. 45813/62. Heading G1W. [Also in Division G3] Relates to an apparatus for filling containers e. g. beer barrels, with measured quantities by weight which automatically takes into account the tare weight of each unfilled container. In operation, a control valve C. V. is positioned as shown in Fig. 1, so that the tare weight of a cask C applied to a load cell W produces a pressure which is communicated through lines L1, L2 to a pressure adder PA where the said pressure due to the cask is added to a pressure arriving along a line L5 from one or other pressure Regulator PR1 to PR5, (a Regulator is selected according to the required weight of beer.) and the sum of these pressures is applied through a line L4, a valve V3 and a line L6 to the upper side of a differential relay R. A pressure representing the actual weight of the cask would also be applied through a line L3 to the relay R. To start filling the cask the valve CV is changed over to a position shown dotted  causing a pressure to be applied to open a supply valve S. V. Simultaneously the valve V3 is closed isolating the line L6, the pressure in this line representing the tare weight plus the predeter-  mined weight of beer still being applied to relay R. As filling continues the actual weight develops a pressure at the load cell W which is applied through L3 to the relay R until the pressure in line L3 equals that in L6 (i.e. the actual weight of the beer in the cask equals the required weight). The relay is thus actuated and this changes over the valve CV so that filling stops. The cycle is then repeated for a succeeding cask. The pressure adder PA is described in detail with reference to Fig. 2 (not shown). The fluid  pressure system may be pneumatic or hydraulic.