baber/WOPTO huggingface dataset:
Patent GB-499842-A (GB)
Title: Improvements in apparatus for inserting chaplets for casting moulds
IPC: B22C21/14
Filed: 1937-07-26
Abstract: 499,842. Inserting chaplets in pattern plates. DETLEFSEN, G. C. July 26, 1937, No. 21777 /38. Divided out of 494,922. [Class 83 (i)] Apparatus for inserting chaplets in pattern plates for moulding comprises mechanical means for feeding individual chaplets to their receiving holes in a pattern plate and for positioning the chaplets in the holes. The chaplets which may be of wire bent to form a shank and a circular head, are separated and fed to magazines 17 by apparatus described in Specification 494,922. A reciprocating plate 26, Figs. 5 and 6, having an opening 27 and projecting finger 60 and curved away from the magazine 17 at its upper end, allows the chaplets to fall, one at a time, into a recess 31. The chaplets assume an upright position in this recess with the heads uppermost and a small air-operated hammer 38 pushes them into the receiving hole 36 in the pattern plate 37. The recess 31 and guiding portion 35 for the chaplet stem are formed by slidable halves 32, 33 which are moved apart at the end of a positioning operation to enable the positioning device to be withdrawn without disturbing the chaplets.
Patent GB-600729-A (GB)
Title: Improvements relating to powder metallurgy
IPC: B22F3/16
Filed: 1944-11-06
Abstract: 600,729. Powder metallurgy. AMERICAN ELECTRO METAL CORPORATION. Nov. 6, 1944, No. 21777. Convention date, Oct. 30, 1943. [Class 83 (iv)] Forging dies.-In order to obtain substantial uniformity of particle distribution in a body formed by powder metallurgy and having final thicknesses which differ considerably in the direction of pressing, the metal powder is compressed in a die to form a compact of an intermediate shape and density, which compact is sintered and is then subjected to a final pressing operation at a considerably higher pressure in which it is brought to the required final shape and in which the less dense parts of the compact are more compressed than the denser portions. If a metal powder fill in a die 13 is pressed by punches 15 and 16, Fig. 3b, to its final form 25, the density of the thinner central portion will considerably exceed that of the outer portions which may crumble during subsequent handling. According to the method of the invention this difficulty is overcome by filling a die 13 whose bottom is formed by a punch 55, Fig. 7, having an upstanding central portion whose curvature is considerably greater than that of the required final body and partially compressing the powder fill between this punch and an upper punch 63 with a central portion of less curvature to form the compact 68, Fig. 8. The average density of the compact is about midway between that of the powder fill and that of the required final body. This compact is sintered for from 10 to 30 minutes in a neutral or reducing atmosphere within a temperature range of about 20 to 35 per cent below the melting point of the powder. In the subsequent final shaping step the sintered body is compressed in a die 13 between punches 73 and 74, Fig. 9. The central portion of the lower punch 74 is of less curvature than that of the compacting punch 55 so that the less dense outer portions of the body are more highly compressed than the central portion. In general the compact will be formed at a pressure of from 2 to 10 tons per sq. inch and the final shaping will be carried out at a temperature of from 40-50 tons per sq. inch. A volatile lubricant may be added to the original powder mix. As a specific example, pure spongy iron passing a 300 mesh sieve is mixed with 1 per cent lubricant of a zincstearite base and pressed at 5 tons per sq. inch. The intermediate shape was sintered for 15-20 minutes at 1100‹ C. and then pressed to final shape at 50 tons per sq. inch. The body was finally annealed at a temperature between 600‹-720‹ C.
Patent GB-929185-A (GB)
Title: Improvements in or relating to the production of primary and secondary organo-phosphine oxides
IPC: C07F9/53
Filed: 1960-06-22
Abstract: Organophosphorus oxides having the formula:-  <FORM:0929185/IV(a)/1> wherein R is an alkyl, cycloalkyl or aralkyl group which group may be substituted or unsubstituted, and R1 is a hydrogen atom or an unsubstituted or C-substituted 1-hydroxyalkyl, 1-hydroxycycloalkyl or a -hydroxy aralkyl group are obtained by contacting phosphine and at least one molar equivalent of one of the following substituted or unsubstituted ketones; alkyl ketones, cycloalkyl ketones, aralkyl ketones and diaryl ketones in the presence of a mineral acid. Suitable substituents for the groups R and R1 are halogen, hydroxy, alkoxy, carboxy and nitro.  When about one molar equivalent of the ketone is used the corresponding primary phosphine oxide is obtained but when two or more molar equivalents of the ketone are used the corresponding hydroxy-substituted secondary phosphine oxide is formed.  The invention also includes secondary phosphine oxides having the formula:-  <FORM:0929185/IV(a)/2> wherein R is as defined above and R11 is an unsubstituted or C-substituted 1-hydroxyalkyl, 1-hydroxycycloalkyl or a -hydroxyaralkyl group.  Specified ketones for use in the process are cyclohexanone, cyclopentanone, acetone, diethyl ketone, methyl isopropyl ketone, 4-heptanone, acetophenone, benzophenone, p-chloroacetophenone, laevulinic acid, methyl isobutyl ketone, octyl ethyl ketone, 1-hydroxy-3-oxo-butane, 1-methoxy-3-oxo-butane and p-nitroacetophenone.  The mineral acid used in the reaction is preferably a strong aqueous mineral acid, e.g. HCl, HNO3, H3PO4 or H2SO4.  The reaction may be carried out at atmospheric or higher or lower pressure and suitable temperatures are from -5 DEG C. to 100 DEG C., about 15 DEG  to 50 DEG C. being preferred.  The process may be carried out batchwise, continuously or semi-continuously.  Several examples are given and the products are useful as complexing agents for the extraction of various metal ions, e.g. for selectively leaching uramyl values from an ore containing such values.  Specification 912,269 is referred to.
Patent GB-1473662-A (GB)
Title: Battery cages for poultry incorporating a droppings belt
IPC: B65G39/16
Filed: 1974-05-07
Abstract: 1473662 Conveyer-belt rollers H D SHARMAN 7 May 1974 [8 May 1973] 21841/73 Heading B8A [Also in Division A1] In a poultry battery cage having a droppings belt beneath the or each tier of cages a roller assembly for guiding each belt, comprises a sleeve 10 supported by a central plate 16 through which a stationary spindle 12 passes. An aperture for the spindle is rounded, at 18, to enable the sleeve 10 to rock on the spindle. The extent to which the sleeve can rock is limited by apertures in end plates 20 through which the spindle passes. Wandering of belt B on the sleeve is automatically limited. In a modification, Fig. 5 (not shown), a ball bearing (22) is provided between the spindle and the plate (16).
Patent GB-1281794-A (GB)
Title: A pipe fitting and method of making the same
IPC: F16L41/02
Filed: 1971-04-19
Abstract: 1281794 Joints JOHNS-MANVILLE CORP 19 April 1971 [13 Feb 1970] 21845/71 Heading A4H [Also in Division F2] A pipe fitting which may be in the form of a junction piece of elbow, bend, Y or, as shown, T-shape, is made in two sections in Z with interengaged tongues and grooves 16, 18 held together by a layer 32 of adhesive of a uniform thickness determined by the interaction between the tongue or grooves. The height of the tongues 16 is greater than the depth of the grooves 18, so that abutted faces of the sections Z are held spaced apart. The sections Z are identical in shape and are made in a common mold from a thermosetting resin reinforced with glass fibres. Holes 24, 28 receive self-tapping screws holding the sections Z together until the adhesive sets. The sections Z have external reinforcing ribs (36), Fig.3 (not shown).
Patent GB-1436096-A (GB)
Title: Pyrazoles substituted by perfluoralkyl groups and a method of  preparing the same
IPC: C07D231/12
Filed: 1974-05-16
Abstract: 1436096 Perfluoroalkyl pyrazoles PRODUITS CHIMIQUES UGINE KUHLMANN 16 May 1974 [22 May 1973] 21854/74 Heading C2C Perfluoroalkyl pyrazoles of general formulµ in which R F  and R F <SP>1</SP>, same or different, are each perfluoroalkyl groups C n F 2n+1  wherein n is an integer 3-15, optionally substituted phenyl, C 1 -C 7  alkyl and in which at least one of the R F  and R F <SP>1</SP> groups is a perfluoroalkyl group and X is H, C 1 -C 7  alkyl, optionally substituted phenyl or perfluoroalkyl groups C m F 2m+1  in which m is an integer 2-7, are prepared by reacting a #-diketone with a hydrated hydrazine XNH-NH 2  in the presence of a catalytic amount of concentrated HCl by refluxing for at least 1 hour in a C 1 -C 4  alcohol solvent. Amongst the Examples 3(5) phenyl-5(3) pentadexafluoroheptyl pyrazole is preferred.
Patent GB-1141958-A (GB)
Title: Improvements in or relating to pumps, in particular scavenging pumps for use in drilling operations
IPC: F16J15/10
Filed: 1967-05-11
Abstract: 1,141,958. Seals. MASCHINEN - UND BOHRGERATE - FABRIK ALFRED WIRTH & CO. K.G. 11 May, 1967 [20 May, 1966], No. 21882/67. Heading F2B. The packing 5a, 5b, 5c of a scavenging pump is tightened up separately from the cover 4 and cylinder bush 3 by means of a fixing device 31 operated by fluid pressure. Once the packing has been compressed by a piston-type gland 34 operated by fluid supplied through passages 36, 37 from a hand pump, screws 40 may be screwed down by hand to the back of the gland and the fluid pressure released. The cover 4 and bush 3 are then tightened by fluid pressure which is supplied from a hand pump through passages 14, 15 to move pistons 10 against sleeve abutments 9 screwed on the end of studs 6. Once the desired fixing force has been reached as indicated by a manometer, nuts 16 are spun down by hand to abut the cover and the fluid pressure released.
Patent GB-1166208-A (GB)
Title: An Improved Fastener
IPC: F16B19/10
Filed: 1968-05-09
Abstract: 1,166,208. Stud and socket fastenings; clips. A. RAYMOND. 9 May, 1968 \t3l May, 1967], No. 22116/68. Heading E2B. A resilient synthetic plastics fastener 10 comprises a head 11, a recess 23 in the undersurface of the head and a shank 12 comprising a plurality of tongues 27-29 which project from the base of the recess 23 and which are snap-engageable through an aperture and a panel wherein the roots of the hangers are spaced inwardly .from the side wall of the recess. As shown, in which the head is formed with wings 13-16 for engaging inturned flanges of a moulding, a pin 22 is located as a friction fit in a bore 19 and subsequent to insertion of the shank .12 into the panel aperture, is forced to expand the latter behind the panel.
Patent GB-1508025-A (GB)
Title: Process for the production of continuously dyed high-shrinkage filaments and fibres of acid-modified acrylonitrile copolymers
IPC: D06P5/20
Filed: 1975-05-22
Abstract: 1508025 Dyeing dry spun acrylonitrile copolymer fibres BAYER AG 22 May 1975 [1 June 1974] 22193/75 Heading D1B A continuous process for dyeing dry-spun acrylonitrile copolymers comprises passing unstretched fibres or filaments of acrylonitrile copolymer, containing at least 150 milliequivalents of acid groups per kg, under light tension through a water bath at a temperature of up to 70‹C; removing from 30-70% of the residual liquid present in the fibres or filaments by squeezing; drying under heat to a residual liquid content of at most 10%; dyeing at 20-100‹C in a dyebath for up to 60 seconds; fixing the dye; stretching the fibres or filaments to 1.5 to 2.5 times their original length at 70-90‹C and then after-treating. The acid groups are derived from copolymerised monomer preferably allyl, vinyl, styrene or methallyl sulphonic acid, 3- methacrylaminodiphenyldisulphonimide, or their alkali metal salts. The copolymer preferably also contains vinyl acetate or acrylic or methacrylic acid alkyl ester comonomers.
Patent GB-726394-A (GB)
Title: A control system for electric motors
Inventor: BREITLING WILHELM
IPC: H02P3/10
Filed: 1953-08-12
Abstract: 726,394. Control of motors. OLYMPIA WERKE WEST GES. Aug. 12, 1953, No. 22238/53. Class 38 (3). The armature current of a universal motor 1 is reversed for braking by moving contacts 3a, 3b, to the position shown, the connection of the motor to the source being maintained for a predetermined period by contact 5 of a time delay relay 4. The coil of the relay is connected across a capacitor 8 which is charged through contacts 3c, 3d, during the normal running operation of the motor, and, for braking operation, the time delay of release is adjusted by resistor 7 so that the contact 5 opens when the motor is about to change its direction of rotation. A rectifier 6 is connected in series with the relay coil when the supply is A.C. The voltage across the capacitor 8 may be stabilized by means of a parallelconnected discharge tube and a series-connected resistor.
Patent GB-206606-A (GB)
Title: Improvements in ball bearings
IPC: F16C19/18
Filed: 1922-08-16
Abstract: 206,606. Martes, H. Aug. 16, 1922. Ball bearings.-A selfcontained adjustable twopoint contact ball bearing having two or more rows of balls comprises a cup a having a cylindrical outer surface a<2> and a cone b having a cylindrical inner surface b<2>, each row of balls c, c<1> running on a conical surface on one member and in a groove in the other member. The groove has a curvature slightly greater than that of the balls, so that each ball makes contact at diametrically-opposite points. As shown in Fig. 1, the cup a is formed with a conical inner surface a<1> and the cone b is formed with grooves b<3>, b<4>. but this arrangement may be reversed. Fig. 6 shows a construction in which the balls c of one row run in a groove b<3> on the cone b and on a conical surface in the cup a, while the balls c<1> of the other row run on a conical surface on the cone b and in a groove a' in the cup a. The balls in the two rows may be of different diameters. The balls are spaced and retained in position on the cone b by cages d, d<1>, Figs. 1 and 3, which comprise cylindrical or conical rings of a diameter greater than that of the ball centres and having apertures f smaller than the balls and cut through at one side of the ring so as to be sprung over the balls. The parts may be retained in position by a spring-ring d<2>, Fig. 5, or by a spring-ring d<3>, Fig. 10. Specifications 10986/96 and 2557/02 are referred to.
Patent GB-690125-A (GB)
Title: Improvements in and relating to the manufacture of electrical coils
IPC: H01F41/12
Filed: 1950-09-11
Abstract: An electric coil is impregnated with a liquid composed of 60 per cent diethylene glycol maleate, 24 per cent methyl methacrylate, 8 per cent diallyl phthalate, 8 per cent styrene. Polymerization may be achieved by heat or by activators such as ascorbic acid.  Greater flexibility of the solid is achieved by adding talc, e.g. 20 per cent.  Specification 540,168 is referred to.
Patent GB-1301127-A (GB)
Title: Apparatus for air conditioning
IPC: F24F3/044
Filed: 1970-05-08
Abstract: 1301127 Air-conditioning apparatus FRIED KRUPP GmbH 8 May 1970 [10 May 1969] 22412/70 Heading F4V An air conditioner comprises a mixing chamber 4 for fresh and returned air, an air filter 6, heat exchangers 7 and 8 using water as the heat exchange medium and enclosing a drip trap 9, a steam air humidifier 10 and a fan 11 installed in box-shaped housings assembled to form a compact uniform housing with a heating cell 12 and cooling cell 13 connected to said heat exchangers by circuits including limiting valves 16 and 17 and change-over valves 14 and 15. A fan 2 recirculates air through a duct 3, over a temperature sensor 18, a humidity sensor 19 and maximum and minimum humidity limiters 20 and 21. Other controls include a temperature sensor 22 in the fresh air duct 5 and another 23 between the heat exchangers 7 and 8. All these sensors are associated with a known regulating device. Pumps 40 and 30 determine the direction of flow of heating and cooling water. The ratio of recycled air to fresh air in the mixing chamber 4 is controlled by flap 25 operated by a motor 24. Operation.-With excessive humidity in the summer, valves 14 and 15 are controlled by limiter 20 to cause cold water to flow between heat exchanger 7 and cooling cell 3 to dehumidify the mixed air and hot water to flow between heat exchanger 8 and heating cell 12. Valves 16 and 17 come respectively under the control of humidity sensor 19 and temperature sensor 18. If heat exchanger 8 is unable to maintain the required room temperatures valves, 14 and 15 are actuated to divert hot water to heat exchanger 7. In winter with temperatures below 5‹ C. temperature sensor 22 actuates valves 14 and 15 so that heat exchanger 7 can only act as an air heater, and control of the humidity sensor 19 is switched from valve 16 to the flap setting motor 24 to vary the air mixture according to the humidity. During frost, sensor 23 shuts off the fans 2 and 11 and the fresh air flaps 25, valve 17 being opened and valves 14 and 15 being switched to the through flow position so that heat exchanger 7 can act only as a heater.
Patent GB-1310045-A (GB)
Title: Assemblies of precision-fitted relatively movable components and method for manufacturing the same
IPC: F16K27/00
Filed: 1970-05-11
Abstract: 1310045 Mixing Taps INVESTORS IN VENTURES Inc 11 May 1970 [22 May 1969] 22629/70 Heading A4N [Also in Divisions B1 B3 C7 F2 and G1] In a method of making an assembly of at least two components, which respectively have complementary, adjacent surfaces movable relative to one another, there is initially deposited at the complementary surface of one component an initial molecular layer, which does not adhere thereto and whose configuration is determined by that of the surface, and then successive molecular layers are deposited on the initial layer until a unitary structure of desired thickness if formed, the  structure forming at least a part of the other component. A mixing tap 254, Fig.22, is made by forming an inner component 270 of an elastomeric material, the component being moulded directly on to a stem 276 and provided with openings 278, 280. It is  filled with a wax filler 284, Fig.26 (not shown), which has extensions 286, 292, and is externally coated with graphite to render it electrically conductive. A component 282, e.g. of copper, is deposited electrolytically and a masking body 298 allows the formation of a flanged opening 300. The wax is removed and a pair of nipples 296 fitted to correspond with the opening 280. Each nipple connects with a hot and cold water conduit respectively, Fig.23 (not shown), of a pipe 256. A bottom part 262 is secured to the pipe 256 and a handle 264 is fastened to the stem 276 by a screw 274.
Patent GB-841133-A (GB)
Title: Improvements relating to hollow electrical resonators
Inventor: AULD BERT ALEXANDER
IPC: H01J23/207
Filed: 1955-08-06
Abstract: 841,133. Tuning cavity resonators. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 20, 1956 [Aug. 6, 1955], No. 22696/55. Class 40(8). [Also in Group XL(a)] A resonator 2 of the re-entrant type, forming e.g. part of a klystron, is tuned by means of a conductive plate movable radially towards and away from the re-entrant part 3. As shown in Fig. 4, the plate 5 is in one piece and is of such a width that the path swept out by its edges would pass on either side of the re-entrant part 3 if produced. This improves the linearity of the tuning characteristic. In a modification, the plate consists of two connected wing portions which may lie in approximately the same plane or may include an angle of 90 degrees. The wing portions 9, 10 of Fig. 8 are attached separately to a yoke 14 movable upon a rod 15.
Patent GB-223217-A (GB)
Title: Improvements in pumps
IPC: F04B1/12
Filed: 1924-09-26
Abstract: 223,217. Rey, A. Oct. 8, 1923, [Convention date]. Cam-actuated pumps; stroke, varying; air vessels; multiple-acting pumps; revolving-cylinder pumps.-A pump or compressor comprises a casing 1 and a pump barrel 5 containing a number of chambers 9 in which plungers 10 are reciprocated by an inclined rotary head 26 when the barrel 5 is rotated. The plungers are connected to the head by extensions 30 embracing pins 27 which are mounted in ball segments 28 in sockets 29. The head 26 rotates on a plate 25 secured to a spherical member 14 rotatably mounted in the cover 3 of the casing. The head 26 has an extension 26<1> passing through the plate 25 and engaged by a nut 24. The inclination of the head 26 may be adjusted by a screw 18 and nut 20 connected to the member 14. The head is fixed in position by a plate 16 covered by the member 14 and clamped against curved extensions 13<1> of the cover 3 by a nut 17. Liquid enters the chambers 9 through a port 6 and suction chamber 6<1> and is delivered to the outlet 7 through a chamber 7'. A lateral chamber closed by an elastic diaphragm may be arranged in the wall of the chamber 7' to regulate delivery. The casing 1 and cover 3 may rotate instead of the bamrel 5 and head 26.
Patent GB-986634-A (GB)
Title: Styrene derivatives
Inventor: WILLIAMS LESLIE
IPC: C07C25/28
Filed: 1960-06-30
Abstract: Vinyl halobenzenes are prepared by dehydrobromination of a bromoethylhalobenzene preferably by passing the bromoethylhalobenzene with superheated steam over a calcium sulphate catalyst at a temperature of at least 180 DEG  C. and preferably within the range of 275-325 DEG  C. The halogen nucleous substituent may be fluorine, chlorine or bromine.  The bromoethylhalobenzene may be prepared by bromination of ethylhalobenzene by mixing the ethylhalobenzene with the theoretical amount of bromine and exposing the mixture to light in a visible and infra-red spectrum at room temperature. The compounds are used for incorporating in a polymeric material to produce a self-extinguishing polymeric material.  In an example of the preparation of vinyl dibromobenzene, ethyldibromobenzene is prepared by brominating ethylbenzene which is then mixed with bromine and passed through a cylindrical glass annulus where it is irradiated with light from a tungsten or "daylight" fluorescent lamp located within the annulus to produce bromoethyldibromobenzene. The latter is passed through a dehydrobromination apparatus consisting of a vertical tube with a thermocouple tube fused axially therein, the annular space between the inner and outer tubes being packed with granular calcium sulphate.  The tube is wound with two independently controlled heating elements of 250 watts and is heavily lagged.  An efficient condenser and receiving system is connected to the bottom of the tube.  At the top of the tube is mounted a vaporizer consisting of a vertical tube 10 inches long by 1 1/4 inches internal diameter packed with glass helices and wound with a 250 watt variable heating element, and to which superheated steam is supplied. The bromoethyldibromobenzene and water in the ratio of about 1 to 3 parts by volume are metered to the vaporizer and water evaporator respectively.  The superheater and vaporizer outlet temperatures are governed at 220 DEG  C. and 200 DEG  C. respectively.  The dehydrobromination reaction is endothermic and heating of the reaction tube is set to give a temperature of about 275 DEG  C. in the centre of the top portion and 300 DEG  C. in the bottom portion. The vinyl dibromobenzene condenses along with dilute aqueous hydrobromic acid and separates as a very pale yellow lower layer, which is separated, washed till neutral and dried with calcium chloride.  In another example, vinyldichlorobenzene is prepared by methods analogous to the above.  Specifications 837,696, 927,281, U.S.A. Specifications 2,432,737 and 2,485,524 are referred to.ALSO:Vinylhalobenzenes, in particular vinyldibromo and dichlorobenzenes are incorporated during the manufacture of polymers of ethylenically-unsaturated compounds, in particular polymers and copolymers derived by the polymerization or copolymerization of styrene e. g. polystyrene, unsaturated polyester-styrene copolymers, butadienestyrene copolymers and styrene-acrylonitrile copolymers.