baber/WOPTO huggingface dataset:
Patent GB-640371-A (GB)
Title: Improvements in or relating to an insecticidal composition
Filed: 1947-06-20
Abstract: Di-(chlorophenoxy)-methane is prepared by reacting equimolecular proportions of sodium with 4-chloro-phenol in absolute ethanol, and treating the resulting alcoholic dispersion with one-half molecular proportion of dichloromethane at a temperature between 80 DEG  and 150 DEG  C. under autogenous pressure. The mixture is cooled and diluted with water, the insoluble compound being recovered by extraction or fractional distillation of the extract.  The other di-(mono-chlorophenoxy)-methanes may be similarly prepared.ALSO:An insecticidal composition comprises a mixture of a di-(mono-chloro-phenoxy)-methane with a finely divided solid inert carrier, an emulsifying and dispersing agent, or a liquid carrier. Specified compounds are the di-(4-chloro-phenoxy)-, the di-(2-chloro-phenoxy)- or the di-(3-chlorophenoxy)-methane.  The toxicant may be dispersed on gypsum, diatomaceous earth, bentonite, talc, volcanic ash, and wood flour to form compositions used as dusts or in water suspensions, or may be incorporated in other standard insecticidal compositions and/or in combination with lead arsenate, pyrethrum, rotenone, sulphur and copper sprays.  The toxicant may also be employed as a constituent of oil-in-water emulsions, sodium lauryl sulphate being a suitable emulsifying agent; or may be dissolved in a light kerosene fraction, preferably also containing pyrethrum. p
Patent GB-923022-A (GB)
Title: Improvements in or relating to power driven feed arrangements for wood sawing machines
Inventor: GOLAY PAUL
IPC: B27B29/08
Filed: 1958-05-21
Abstract: 923,022. Control of several motors. GUTLLIET SONS & CO. Ltd. Aug. 21, 1959 [May 21, 1958], No. 16362/58. Class 38 (3). [Also in Group XXIII] A wood-working machine, such as a band saw, has an alternating current -motor 3 for driving the saw blade and a direct currentgeared motor 8 for feeding the work-table 4, the motor 8 being reversible and controlled by gears 12, 14 to give a substantially stepless variation in speed. The current for the motor 8 is rectified in a ventilated compartment 15 by such means as a copper-oxide rectifier, vacuum tubes or transistors or by a potentiometer in the control box 12, which is mounted on or close to the work-table 4.
Patent GB-612595-A (GB)
Title: A method for the production of high vacua
IPC: C07F7/08
Filed: 1946-05-29
Abstract: In producing high vacua by a condensation pump, the gas from the space being evacuated is entrained in a stream of vapours of a pumping fluid consisting of one or more organo-polysiloxanes which boil at temperatures between 250 DEG  and 500 DEG  C. at atmospheric pressure.  The melting-point of the polysiloxanes must be below the operating temperature.  They contain 1.6-3.0 hydrocarbon radicals per silicon atom and usually have 2-15 silicon atoms in the molecule. The polysiloxanes may be prepared by hydrolysis of compounds such as dimethyldichlorosilane; ethoxytrimethyl silane; dibromdiethylsilane; dichlormethylphenyl silane; bromtriethylsilane; diethoxy-diphenylsilane; benzyldichlorethylsilane; ethoxymethyldiphenylsilane; hydrolysis and condensation follow the usual course.  In example (1), a mixture of dichlormethylphenylsilane, trichlorphenylsilane, diethoxydimethylsilane and ethoxytrimethyl silane was hydrolysed. The oil was separated, washed and fractionated.  Fractions distilling at 160 DEG  C./0.2 mm. and 190 DEG  C./0.2 mm. were isolated and employed as working fluids in diffusion pumps.  In example (2), a mixture of dichlormethylphenylsilane, diethoxydimethylsilane and ethoxytrimethylsilane was hydrolysed and the product fractionated. Three fractions were obtained suitable for use as pumping fluids.  In example (3), a mixture of dichlormethylphenylsilane, diethoxydimethylsilane and ethoxytrimethylsilane was hydrolysed. Fractional distillation of the oil yielded three fractions suitable for pumping fluids.  In example (4), dimethyltetraphenyldisiloxane prepared from ethoxymethyldiphenylsiloxane is stated to be useful in diffusion pumps.ALSO:Polysiloxanes may be prepared by hydrolysis of compounds such as dimethyldichlorosilane, ethoxytrimethyl silane, dibromodiethylsilane, dichlormethylphenyl silane, bromomethylsilane, diethoxydiphenylsilane, benzyldichlorethylsilane, ethoxymethyldiphenylsilane, hydrolysis and condensation follow the usual course.  In example 1 a mixture of dichlormethylphenylsilane, trichlorphenylsilane, diethoxydimethylsilane and ethoxytrimethyl silane was hydrolysed.  In example 2 a mixture of dichlormethylphenylsilane, diethoxydimethylsilane and ethoxytrimethylsilane was hydrolysed and the product fractionated. In example 3 a mixture of dichlormethylphenylsilane, diethoxydimethylsilane, ethoxytrimethylsilane was hydrolysed.  In example 4, dimethyltetraphenyldisiloxane is prepared from ethoxymethyldiphenylsiloxane.
Patent GB-420829-A (GB)
Title: Method of treading tire casings and apparatus therefor
IPC: B29D30/54
Filed: 1933-06-08
Abstract: 420,829. Moulding treads on rubber tyres. MAYHEW, J. H., 4615, Browndale Avenue, Minneapolis, Minnesota, U.S.A. June 8, 1933, No. 16475. [Class 87 (ii)] Tyres are re-treaded by placing the circumferentially contracted tyre casing with the applied tread within a mould which has an internal diameter less than the normal diameter of the casing, the casing then being expanded into contact with the mould and heat applied. The mould is of light construction comprising a strip of sheet metal profiled to form two outer annular flanges 10 to confine the sides of the tread, and two inner flanges 11 to form the required grooves in the tread surface. Vents 13 are provided between the various flanges. A coil 14 is soldered on to the mould, the coil serving for the circulation either of a heating or cooling medium. The tyre casing is first spread apart at the rim portions as by screw- and-nut gear 23, 25, 26 in order to contract the casing diametrically so that it may be passed into the mould after the new tread 21 of unvulcanized material has been applied. The gear 23 is then removed, an inner tube 27 is inserted and the casing edges fitted on to a false rim 28. Side blocks 28<a> are clamped on to the casing by screws 31 and internal air pressure is applied to force the tread into the mould while steam is circulated through the coil 14. A heat insulation pad 32 may be applied to surround the coil.
Patent GB-1535915-A (GB)
Title: Reproduction of a recorded signal
IPC: G11B5/592
Filed: 1975-11-20
Abstract: 1535915 Automatic control of position SONY CORP 20 Nov 1975 [26 Nov 1974] 16538/78 Divided out of 1535914 Heading G3R The position of a transducer on a rotatable element e.g. in a helical scan video tape recorder is controlled so that the transducer moves in preset steps transversely across adjacent tracks on a recording medium, and thus follows the tracks. The movement is effected by control of the transducer mounting, for example by varying the voltage applied to a ceramic steel bimorph leaf upon which the transducer is mounted.
Patent GB-563755-A (GB)
Title: Improvements relating to the speed control of internal combustion engines
IPC: F02D9/00
Filed: 1942-11-24
Abstract: 563,755. Speed governors. NUNN & CO., Ltd., H. E., and MOONEY, M. Nov. 24, 1942, No. 16595. [Class 57] The speed of an internal-combustion engine is controlled by a centri fugal governor 1 through a lever 11 acting, e.g. througl a link 23, on the throttle valve, and this control is assisted by the 'suction in the intake manifold which may act on a piston in a cylinder 15, connected to the lever at an intermediate point or acting on a setting lever 5 adjustable to vary the tension of the governor spring. The piston and cylinder may be replaced by a diaphragm or bellows.
Patent GB-1509086-A (GB)
Title: Cutting machine
IPC: B26D1/00
Filed: 1975-04-22
Abstract: 1509086 Cutting apparatus B J VAN DAL and B J C LANGERWERF 22 April 1975 [23 April 1974] 16598/75 Heading B4B A machine for cutting out an elongated member of e.g. part cylindrical cross-sectional shape, from an elongated article of, e.g. foam plastics material, comprises a sleeve within which the article is adapted to be longitudinally moved, and at least one stationary blade mounted on the inner wall of the sleeve and bent to the desired cross-sectional shape of the member to be cut. As shown in Fig. 2 groups 3, 4, 5 and 6 of semi-circular blades are mounted with their ends 7, Fig. 1, secured to the wall of the sleeve and are adapted to cut semicylindrical shells from a square-section length of plastics material for use in insulating pipes. The cutting edges of the blades are shaped as shown in Fig. 1, to facilitate cutting.
Patent GB-962182-A (GB)
Title: Improved metal phosphates and method of making same
IPC: C01B25/26
Filed: 1962-05-01
Abstract: Calcium, magnesium barium, zinc, iron and aluminium orthophosphates are prepared by treating salts or oxides of these metals with phosphoric acid (which may be formed in situ) first at a temperature below 30 DEG  C. and pH 1.5-2.5, then at above 60 DEG  C. and pH 2.5-3.5, separating the crystals by hot filtration and then heating to dehydrate said crystals.  The crystals obtained before dehydration are flat plate-like crystals of the respective tetrahydrated orthophosphates, the final dehydrated product may be used as a dental setting compound.
Patent GB-569987-A (GB)
Title: Improvements in gas burners
IPC: A21B1/00
Filed: 1943-10-13
Abstract: 569,987. Gas burners. SPOONER, W. W. Oct. 13, 1943, No. 16766. [Class 75 (i)] Burner pipes 5 delivering into an opening in the front wall of a baking or other oven 3 are mounted on the inner wall of a circular chamber 1 supplied with gas or a gas and air mixture through a pipe 7, and a spring-pressed apertured plate 10 is rotatable in the chamber 1 by a handle 13 to cut off the gas flow to the burner pipes progressively. The ends of the burner pipes may be curved to cause the gas streams to impinge on one another adjacent to the oven opening. The handle 13 carries a pointer 12 registering with indications on a dial 15 and is held in position by a spring snug 16. A bye-pass 8 from the pipe 7 leads to a pilot burner 9.
Patent GB-626798-A (GB)
Title: Improvements relating to the suspension of vehicle bodies
IPC: B61F5/22
Filed: 1947-06-26
Abstract: 626,798. Suspension of vehicle bodies. WHYMAN, F., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 26, 1947, No. 16861. [Class 103 (vi)] A vehicle body 1 is suspended .from the bogie 2 by swing links 3 permitting lateral movement between 1 and 2. The link pivot, cushioned at 7, affords limited universal movement so that the body can also rotate slightly about a vertical axis relative to the bogie. The horizontal links 10, 11 form the body-to-bogie pinioning system.
Patent GB-893879-A (GB)
Title: A power transistor
IPC: H01L29/73
Filed: 1960-05-12
Abstract: 893,879. Transistors. SIEMENS-SCHUCKERTWERKE A.G. May 12, 1960 [May 12, 1959], No. 16875/60. Class 37. A power transistor comprises a P-type silicon zone 2 of about 200 ohm cm. resistivity, base electrodes 3 and 5 comprising P-type zones 7 and 9, emitter electrode 4 and collector electrode 6 each comprising highly doped N-type zones 8 and 10, the thickness of the base zone 2 between the emitter and collector electrodes being between 80 and 100 Á. Electrodes 4 and 5 are ring-shaped. The N- and P-type zones may be produced by alloying gold-antimony (0.5% of Sb) and gold-boron (0.2% of B) or gold-aluminium foils to the surface of the P-type body by heating up to about 700‹ C. The gap B between the emitter 4 and each of the base electrodes may be about 50Á. Specification 893,878 is referred to.
Patent GB-1263434-A (GB)
Title: Electronic amplitude modulator
IPC: H03C1/60
Filed: 1970-04-09
Abstract: 1,263,434. Amplitude modulation. ELEKTRONIKKLABORATORIET VED NTH. 9 April, 1970 [16 April, 1969], No. 16876/70. Heading H3R. In an amplitude modulation system, the carrier signal is modulated to discrete levels which approximate to the required modulation envelope. In one embodiment, hybrid 6 splits the carrier signal into two components which are differentially phase modulated by transmission lines 13, 14. The lines are provided with short circuiting diodes located along them at predetermined points, so that switching of the diodes in dependence of the modulation signal amplitude will produce stepwise complementary variations in the phase angle of the signals + #, - #. These two signals are then combined in hybrid 7 to give the required amplitude modulated output. The carrier signal is also applied to a similar channel 5 for modulation with a different signal. In a simpler arrangement, Fig. 2 (not shown), a single hybrid and transmission line are used. The carrier is applied to one port (P1). The modulated output is extracted from the diagonally opposite one (P2), and the two ends of a transmission line (23) are connected to the other two ports (P3, P4). Details of the arrangement for generating signals at 90 Hz and 150 Hz from a single 900 Hz source and for converting them to step function signals for switching the transmission line diodes are also described, Figs. 3, 4 (not shown).
Patent GB-145532-A (GB)
Title: Improved apparatus for storing and distributing liquids
IPC: B65D90/38
Filed: 1920-06-22
Abstract: 145,532. Racine, P. F. A. March 27, 1918. [Convention date]. Fires, preventing in receptacles for inflammable liquids.-Relates to apparatus of the type in which liquids, particularly petrol or other inflammable liquids, are stored in a tank R<2> immersed in a safety liquid, such as water, in an outer tank R<1>, the petrol &c. being in the upper part of the tank R<2> above an auxiliary liquid, such as water, which is used to force the petrol through the discharge pipe t and cock t<2>. In order to prevent leakage of the inflammable liquid, the safety liquid is given a head sufficient to exert a greater pressure than that exerted by the auxiliary or displacement liquid. The petrol is introduced through a funnel t' and the pipe t. The water may be introduced through a funnel T<1> and a pipe T, and allowed to flow away through a cock T<2> when the tank R<2> is being charged with petrol &c.
Patent GB-1221314-A (GB)
Title: Improvements in or relating to liquid sample containers
Inventor: HOBLIK RENE
IPC: G01N21/03
Filed: 1968-04-09
Abstract: 1,221,314. Optical cells. ROUSSEL UCLAF. April 9, 1968 [April 18, 1967], No.17092/68. Heading G2J. A liquid sample cell for optical investigations comprises a body 1 containing a pair of substantially parallel vertical conduits 2, 7 and 11, 12, connected together at their lower ends by a passage 13 and their upper ends by a by-pass 15 and each having a connection pipe 8, 10, at the upper end so that when inlet pipe 10 is connected to a liquid source, such as a beaker, and suction is applied to pipe 8, liquid passes through conduit 11, 12, and passage 13 to fill the optical cell portion 2. When the supply of liquid is cut off, or exhausted, the by-pass 15 is exposed to atmosphere and the liquid in the optical cell portion 2 is undisturbed so that measurements may be made immediately. An outlet 4, 5, closed by a valve 6 allows emptying under gravity or by suction.
Patent GB-1076031-A (GB)
Title: Improvments in or relating to the reaction between conjugated diolefines and phenols
IPC: C07C37/14
Filed: 1964-04-24
Abstract: A process for preparing hydroxy aromatic compounds which carry unsaturated side groups comprises reacting together at least one monohydric phenol having no substituents which contain atoms other than carbon and hydrogen and having at least one unsubstituted position ortho or para to the hydroxy group and a conjugated acyclic or cyclic diene having at least 5 carbon atoms in the presence of a catalytic quantity of an acid having a first dissociation constant, K25 DEG c., greater than 7 x 10-2 or phosphoric acid, and a quantity of water which is at least twice the weight of the anhydrous acid present and at least 1% by weight of the phenol to be reacted.  In a modification of the process a catalytic amount of a weak acid, other than phosphoric or hydrofluoric acid, having a dissociation constant K25 DEG c. of less than 7 x 10-2 is employed.  In examples: phenol is alkylated with liquid and gaseous cyclopentadiene, p-cresol is alkylated with cyclopentadiene, lambda-nonylphenol is alkylated with cyclopentadiene, b -naphthol is alkylated with cyclopentadiene, lambda-cresol is alkylated with cyclo-hexadiene and phenol is alkylated with piperylene. Catalysts specified in examples include lambda-toluene sulphonic acid and sulphuric acid.  The production of cyclic ethers as by-products is mentioned.
Patent GB-886286-A (GB)
Title: Improvements in and relating to vitreous or ceramic to metal seal assemblies
Inventor: SMART DAVID LORIMER
IPC: H01J5/20
Filed: 1957-05-30
Abstract: 886,286. Vitreous- or ceramic-to-metal seals. ENGLISH ELECTRIC CO. Ltd. May 23, 1958 [May.30, 1957], No. 17172/57. Class 36. [Also in Group XL (a)] A vitreous or ceramic component, having an annular end face arranged to bear against an end member of a seal assembly, is bonded to the end member by a metal ring having flanges bonded to the vitreous or ceramic component and to the end member respectively and having a U-shaped portion in a plane at right-angles to the axis of the assembly. The vitreous ceramic component may be a composite assembly, e.g. of three ceramic rings 13, 24, 25, the flange 26 of the metal ring 21 of iron-nickel cobalt alloy being placed between two of them, 13 and 24, which are bonded to it by known techniques such as the use of glass or metal solders, and the space 28 is filled in with sealing glass. The outer flange 20 of the ring 21 is seam-welded and copper brazed to a further ring 19 which is in turn bonded to the casing 17 and pressurering 18, a glass fibre washer 27 being inserted between the pressure-ring and the ceramic ring 24. A similar arrangement is used to bond the ring 25 to the cathode plate and pressure-ring 11 and 22 at the other end of the assembly. The rings 29 are crimped to rings 21 to facilitate location of the latter during assembly. The assembly forms part of a mercury arc discharge device, the mercury 30 being contained in the plate 11 and a heat shield 31 being provided. A modification (Fig. 3, not shown) has a clamping arrangement to avoid subjecting the assembly to tensile stress, compression being applied to the seal by means of a plate clamped by bolts secured to the easing 17.
Patent GB-625904-A (GB)
Title: Improvements in or relating to snap-action electric switches
IPC: H01H23/20
Filed: 1946-06-06
Abstract: 625,904. Tumbler switches. FRANK, E. June 6, 1946, No. 17198. [Class 38(v)] When an insulating dolly' 4 is moved about its pivot 5 a cranked pin 10 carried by an insert 9 in the dolly engages horns Ie and moves a contact member 1 about its pivot lugs 2 to disengage fixed contacts 3. At the same time the pin 10 compresses a snap-action spring 6 acting on a bridging member 12 rockably carried by sheet metal side portions of the member 1. The spring 6 holds the pivots 5, 2 apart in slots 7b in a bridge 7 and also holds its end-pieces 11, 12 in place on the pin 10 and at one end of slots 1d. In a modification, Fig. 6 (not shown), the dolly 4 is formed to receive the pin 10 without the insert 9.
Patent GB-774750-A (GB)
Title: Improvements in and relating to rule cutters
Inventor: DENNIS EDWARD HENRY JOHN
IPC: B26D7/01
Filed: 1955-06-15
Abstract: 774,750. Cutting strip material. MOORE & SONS, Ltd., C. F. Feb. 13, 1956 [June 15, 1955], No. 17249/55. Class 31 (1). A machine comprising a bed A for supporting strip material to be cut to accurate lengths by means of guillotine cutting blades E, G has a work stop O provided with a toothed member 1, Fig. 2, releasably engageable with a rack M on the bed A, the toothed member being carried by a shaft 2 housed in a spring-loaded eccentric bush 3 within the body of the work stop so that rotation of the bush by means of a knurled head 4 attached thereto and provided with a graduated scale 6, Fig. 4, causes the work stop to move lengthwise of the bed in relation to the toothed member 1 when this is engaged with the rack M. The bush is retained in any of the positions indicated on the scale 6 by means of spring-loaded pins 9 engaging dimples in the underside of the head 4. The toothed member 1 is prevented from turning, when the bush is turned, by means of a cross pin 11 projecting from the shaft 2 into a slot formed in a stub shaft 12 slidable in a lug 14 integral with the work stop. The machine may have another similarly constructed work stop S. The blade E, Fig. 1, is carried by a rocker member D provided with a nose D<SP>1</SP> which is engageable by a member I to move the blade E past the blade G<SP>1</SP> when a lever H is depressed.
Patent GB-624315-A (GB)
Title: Improvements in or relating to snap-action electric switch mechanism
IPC: H01H37/60
Filed: 1947-07-01
Abstract: 624,315. Thermal switches; snap-action switches. THERMEGA, Ltd., and SWINDELLS, V. E. July 1, 1947, No. 17352. [Class 38(v)] In a thermal switch such as that described in Specification 585,590, the moving contact blade 11 and transversely-curved snap-spring 12 are mounted on one side of an insulating tongue 8 extending from the base 3, and the fixed contact 17 is carried on a blade spring 9 mounted against a supporting plate 7 on the other side of the tongue 8. The hook-shaped stop 14 is crimped at 21 so that the stop can be adjusted relative to the fixed contact by expanding or compressing the crimp, and fine adjustment of the fixed contact is provided by a screw 22 in the supporting plate 7 bearing on the spring blade 9. The body of the base 3 is transversely slotted to locate terminal tags, Fig. 3, (not shown). The bimetallic operating strip 6 is heated by a coil 26. Specification 624,316 also is referred to.
Patent GB-152130-A (GB)
Title: Improvements in the moulds and devices relating to and to be used in the construction of concrete cottages and the like
IPC: E04G17/04
Filed: 1919-07-10
Abstract: 152,130. Clarke, E. D. O'G. July 10, 1919. Casting and moulding in situ.-Moulds or centering for walls consists of outer plates 1, 2 hinged together at 16 and inner plates 3, 6 and 4, 5 the latter two being disposed at right-angles to the former and connected to them by angles 17 and pins. Slotted bars 15 are also secured to the plates of each set by means of which and bolts 18 additional centering plates may be secured. In the case of an angle wall, the plate 2 may be swung to a position at right-angles to the plate 1 about the hinge 16 as shown in dotted lines in Fig. 6. For hollow walls inner plates 7 and 10, are used having their ends closed by wooden blocks 13, Fig. 2. The hinge-pieces are formed on a plate 16<a> secured to the plate 1 and on a slotted bar 16<e> adapted to engage over one angle of an angle-piece 16<b> secured to the plate 2 and are secured together by a pin 16<g> engaging a hole in the other angle of the angle-pieces, Fig. 6.
Patent GB-587316-A (GB)
Title: Wash-tub
IPC: D06F1/00
Filed: 1944-09-12
Abstract: 587,316. Washtubs. LOW, Ltd,. D., and ROSS, D. Sept. 12, 1944, No. 17371. [Class 138 (ii)] [Also in Group XI] The bottom of a porcelain or other washtub is formed with an aperture to which is fitted a ring D presenting a seating for a perforated plate A, and an immersion heater is contained in a flanged casing F removably secured, with the interposition of a joint forming gasket C, to the underside of the tub coaxially with the aperture. The tub is drained through an aper- .ture B and the heater casing through a cock H.