baber/WOPTO huggingface dataset:
Patent GB-803815-A (GB)
Title: Improvements in and relating to injection moulding machines
IPC: B29C45/72
Filed: 1955-03-17
Abstract: 803,815. Injection-moulding machines. WINDSOR, Ltd., R. H., and DYKEHOUSE, R. H. Feb. 28, 1956 [March 17, 1955], No. 7802/55. Class 87(2). The material is pre-plasticized by passage through a sinuous or other tube 13 embedded in a mass M of aluminium or other high-heatconducting material, the mass being heated by electric heating elements 15 disposed therein. The tube is contained within a housing 12 the lower part of which accommodates the injection cylinder 17, which also is surrounded by the aluminium &c. and heating elements. The lower end of the tube terminates in a nozzle 14 which feeds the injection cylinder through an annular channel 17a and holes 17b in the cylinder wall. As shown the tube winds in serpentine fashion, but it may follow a helical path. The tube is circular in cross-section from 13a to 13b, but flattened from 13c to the nozzle 14. Material from hopper 11 is fed to the upper end of the tube by a hydraulic piston 6. A cooling channel 8 shields the transfer conduit 5 from the heat of the pre-plastizer. The injection piston 26 is hydraulically reciprocated and the forward limit of its stroke may be adjusted by means of a nut 28 threaded on the piston and abutting a stop 29. When the injection piston is retracted a slide valve 25 in the nozzle is closed, and when the piston is to be advanced the valve is opened. The movements of the valve are effected by hydraulic means 37 via rocker arm 35, the means 37 being co-ordinated with the means that operate the injection piston.
Patent GB-908265-A (GB)
Title: Sealing joint for a slidable rod
IPC: F16J15/56
Filed: 1959-03-06
Abstract: 908,265. Stuffing-box substitutes. BERGOIN, G., and VERRIER, A. March 6, 1959 [March 6, 1958; Dec. 23, 1958], No. 7882/59. Class 122 (5). Packing for a slidable rod h comprises a helix c of polytetrafluoroethylene urged inwardly by resilient means such as, for example, a rubber &c. bush d. The helix may be integral with a guide portion b. In the modification shown in Fig. 3, the helix e which is located between a ring i of hard material and a rubber &c. ring j, has a conical external surface and is urged inwardly by a spring g acting on a conical sleeve f.
Patent GB-769702-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: GRANVILLE JAMES WILLIAM
IPC: H01L21/316
Filed: 1954-03-18
Abstract: 769,702. Semi-conductor devices; anodizing silicon. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 25, 1955 [March 18, 1954; July 23, 1954], Nos. 7887/54 and 21537/54. Classes 37 and 41. A junction-type crystal valve is produced by pressing a probe against a thin insulating layer on a semi-conductor body, the probe containing an impurity characteristic of the conductivity type opposite to that of the body, and applying an electric pulse so that the probe punctures the layer and welds to the semi-conductor to provide a rectifying contact. Fig. 2 shows the completed device, in which a phosphor bronze probe 6 has been welded to a P-type silicon body 1, by passing a 5 ms. 50 V. pulse in the forward direction. The silicon body has an insulating oxide layer 2. The oxide layer may be produced by electrolytic oxidizing treatment in a bath of oxalic acid, an aqueous solution of potassium hydroxide, or a 1 N solution of nitric acid, or by baking in air at 1000 C. for several hours. The probe may consist alternatively of alloys or mixtures of copper with arsenic antimony or bismuth, or if N-type material is concerned, of copper with aluminium, indium, gallium or thallium. Indium coated copper is given as an example. Two electrodes may be provided for example on a wedge-shaped body, to provide a transistor. Specification 700,236 and U.S.A. Specification 2,619,414 are referred to.
Patent GB-560530-A (GB)
Title: New or improved mouldable composition and the manufacture thereof
IPC: C08L61/10
Filed: 1942-06-10
Abstract: Moulded boards or other sheet form materials are made by mixing wood waste (dust, chips or small scraps) with relatively long cellulosic fibres (flax shives, hemp cuttings, cotton or wool waste, straw or dried grass), drying the mixture to a moisture content not more than 10 per cent by weight, mixing it with an aqueous solution of a urea- or phenol-formaldehyde condensate in such a way as to coat the individual particles and moulding the mass by pressure and heat.  The liquid is preferably used in an atomized state, e.g. a spray.  In an example a mixture of 20 per cent sawdust and 80 per cent flax shives is used.
Patent GB-730918-A (GB)
Title: Improvements in or relating to residual pressure check valves more particularly for fluid pressure braking systems
IPC: B60T11/28
Filed: 1953-03-23
Abstract: 730,918. Fluid-actuated valves. BENDIX AVIATION CORPORATION. March 23, 1953 [May 28, 1952], No. 7951/53. Class 135. [Also in Group XXXIV] A residual pressure check valve, particularly for fluid pressure braking systems, comprises a casing 36 containing a resilient sealing member 50 controlling fluid flow in one direction through a casing opening 38, and a reaction member 44, supported by casing ledges or the like 48, acting as abutment for a spring 54 loading the sealing member, the casing acting as a valve seating 60 on a yielding ring to control fluid flow in the reverse direction. The device is shown incorporated in the line between a master cylinder and wheel cylinders of a vehicle fluid-pressure braking system, the spring 62 bearing on the master piston and the casing moving in the master cylinder 12, for the purpose of creating a residual pressure in the wheel cylinders. The semi-elliptical valve and domed casing respectively may be replaced by a similar valve flattened at its seating end or a flat valve backed by a metal plate co-operating with the flat end of a frusto-conical casing. The reaction member is perforated at 46. Specification 694,409 is referred to.
Patent GB-216969-A (GB)
Title: Improvements in or relating to vacuum cleaning apparatus
Inventor: MCCLATCHIE STANLEY
IPC: A47L9/19
Filed: 1923-03-20
Abstract: 216,969. McClatchie, S. March 20, 1923. Motors, cooling and ventilating; casings.-In a vacuum-cleaning apparatus comprising an electromotor and fan mounted in a casing of rounded form whereby it may readily be drawn over the floor following the movements of the flexible suction pipe which connects it with the suction nozzle, the exhaust current induces a cooling current of air over the motor. The motor, which is mounted within the rounded casing of the fan, carries on its rotarv armature 5 a disc 6 on which the curved' blades 7 of the fan are mounted. Air outlets 8 are formed in the casing on a level with the fan blades, which are separated from the filter chamber by a partition on the chamber or by a disc secured to the upper sides of the blades. A current of air is induced by the fan through apertures 9 around' the armature.
Patent GB-659922-A (GB)
Title: Improved electrolytic apparatus using pad electrodes
IPC: C25D17/14
Filed: 1949-03-23
Abstract: 659,922. Electrolytic apparatus. ICXI, J. J. G. March 23, 1949, Nos. 7957 and 7958. Convention dates, March 23, 1948 and Nov. 24, 1948. [Class 41] A pad-type of electrode is provided with a cooling member in contact therewith. The cooling member may have longitudinal or transverse ribs, or may be hollow and have cooling liquid circulated therethrough. As shown in Fig. 2, an anode 1 of platinum or graphite and a pad 6 are held within a cap 2 of insulating material. In contact with the anode is a member 4 which is provided with cooling ribs 5 and is a good conductor, being made, for example, of aluminium. In the arrangement shown in Fig. 3, the cooling means comprises a tubular assembly of longitudinal ribs 5 to which the anode 10 is adjustably secured. A pencil-shaped pad 11 is held on the anode by a collar 12.
Patent GB-161060-A (GB)
Title: Improvements in rotary driers for use in drying granular or clayey material
IPC: F26B11/04
Filed: 1920-03-17
Abstract: 161,060. Christre, L. R. March 17, 1920. Continuous discharge apparatus, rotary. - Relates to driers of the type in which the material is cascaded through the space between two concentric rotary drums and heated gases are passed through the inner drum and the space between the drums, and consists in the provision of flights 12, Figs. 1 and 3, extending throughout the entire length and depth of the space between the drums and dividing the space into longitudinal chambers 13 preferably communicating with each other adjacent to the inner drum 2. The forward end of the outer drum is located within a furnace flue 19 and the gases pass through nozzles 20,.Figs. 1 and 9, arranged between the drums into the inner drum. The nozzles are formed of flat plates and may be arranged at an angle to the axis of the drums. The gases are accelerated through the inner drum by helical flights 18 which may be formed with upstanding portions and arranged in staggered relation to one another. The wet material is fed from a hopper 25 through helical flights 26 into the drying compartments through which it is cascaded by the flights 12 and the shelves 15, 16. The shelves 16 on the inner drum may be arranged in line with the flights 12. The dried material passes from the buckets 29 at the rear end of the outer drum through shoots 28<1> formed in the discharge head 27. In a modification, the forward end of the inner drum is flared outwards and is directly connected to the furnace flue.
Patent GB-654054-A (GB)
Title: Improved manufacture of new organo-silicon oxide condensation products
IPC: C08G77/00
Filed: 1947-03-24
Abstract: An organosilicon oxide condensation product is prepared by reacting a mono-organo-dihalo-silane, wherein the organic radical is monovalent and contains at least five carbon atoms, with water at a temperature of 5 DEG  C. or below.  Mono-organo-dihalosilanes with the following substituents are specified in examples: (1) amyl; (3) benzyl; (4) phenyl; (5) naphthyl; (6) p-methyl phenyl; (7) p-chlorophenyl Mixtures of (2) lauryl dichlorosilane and tetra decyl dichlorosilane, and (8) hexadecyl dichlorosilane and octadecyl dichlorosilane are also employed.  In each case the appropriate alkyl, aryl or alkaryl magnesium chloride is reacted in equimolecular amount with trichlorosilane at -70 DEG  C.  The product is then hydrolysed while cooling with an ice and salt bath.  The hydrolysis is preferably carried out in the presence of an inert solvent, e.g. an ether, an aliphatic or aromatic hydrocarbon, or a halohydrocarbon, and also of a weak alkali, e.g. sodium acetate or bicarbonate.  On treatment with oxidizing agents the hydrogen atoms of the polymers are removed and cross-linking oxygen bridges are formed.  The hydrogen attached directly to the silicon atoms may be estimated by treating the products with sodium hydroxide and pyridine, and measuring the hydrogen evolved.  The products may be used as coatings (becoming resinous by air oxidation). lubricants, hydrophobing agents, e.g. for glass, ceramics, felt, or asbestos.  When liquid, they may be used as damping or hydraulic fluids.  The product of (2) above, applied to a wire coated with organo-siloxane enamel increases the abrasion resistance.  The Specification as open to inspection under Sect. 91 comprises also the use as starting material of mono-organo-dihalosilanes in which the organo-radical contains at least two carbon atoms, and no limitation of the hydrolysis temperature is made.  Examples describe the hydrolysis of (1), (2), (3) ethyl dichlorosilane; (5) dihalogeno-silanes with one of the following substituents, n-propyl, isopropyl, n-butyl, isobutyl. Other mixtures specified as starting material are of ethyl dibromosilane and diphenyl dichlorosilane, phenyl dichlorosilane and diethyl monochlorosilane, dodecyl dichlorosilane and dodecyl - ethyl - monochlorosilane, methyl dichlorosilane, diphenyl monochlorosilane and silicon tetrachloride.  The subject-matter of Specification 654,099 is also included.  This subject-matter does not appear in the Specification as accepted.
Patent GB-851387-A (GB)
Title: Improvements relating to turbines
Inventor: THOMAS ALBERT
IPC: F01D21/02
Filed: 1958-03-13
Abstract: 851,387. Engine stop-gear. ARMSTRONG SIDDELEY MOTORS Ltd. March 4, 1959 [March 13, 1958], No. 8045/58. Class 122 (4). An overspeed trip device for the free power turbine 3 of a gas-turbine engine comprises means rotatable with the turbine and centrifugally-operable at a predetermined speed to interrupt the combustion chamber fuel supply. A disc 10 attached to the turbine shaft 9 carries two opposed L-shaped arms 11 secured near the periphery of the disc by bolts 12 and prestressed to oppose deflection by centrifugal force so that normally the axial limbs of the arms abut each other as shown in Fig. 2. The axial limb of each arm 11 carries a cutting blade 13 at its free end and has a threaded pin 15 for adjustment to ensure simultaneous deflection of both arms at overspeed. The fuel supply system to the combustion chamber for the compressor-turbine (Fig. 1, not shown) and the free power turbine 3 includes a valve 8 having a valve member 18 loaded to close by a spring 19 and normally kept open by a metal tape 22 secured at one end to the valve rod 21 and at the other end 23 to a fixed part 24 of the engine. The tape is held in tension across a slot 25 in the part 24 and at overspeed the arms 11 are deflected under centrifugal force and the tape is cut by one of the blades 13 to allow the spring 19 to close the valve member 18 thereby interrupting the fuel supply to the combustion chamber and shutting down the turbines.
Patent GB-988501-A (GB)
Title: An adjustable frequency converter system for polyphase networks
IPC: H02K47/28
Filed: 1964-02-26
Abstract: 988,501. Converting. ALGEMENE KUNSTZIJDE UNIE N.V. Feb. 26, 1964 [March 1, 1963], No. 8054/64. Heading H2F. A frequency changing arrangement comprises a rotating armature bearing a continuous closed winding 3 having distributed points to which a polyphase supply is connected via slip rings 7 and whose turns or groups of turns are connected to commutator segments 8 engaged by 3 fixed brushes to provide a polyphase output 2. The magnetic circuit is closed by an unwound yoke 4. The armature is rotated via a change speed device 11 from a motor 10 fed from the output supply 2. The input supply provides a rotating magnetic field within the core rotating at the supply frequency, the changing of this field being detected by the winding so that a polyphase output is obtained. The frequency of this is the supply frequency when the rotor is still and decreases as the rotor (rotating in the opposite direction to the rotating field) increases in speed its value depending on the difference in these speeds. A changeover switch 9 enables the direction of the motor to be reversed.
Patent GB-905034-A (GB)
Title: Cinematograph projector
IPC: G03B21/18
Filed: 1959-03-09
Abstract: 905,034. Kinematograph apparatus. ZEISS IKON A.G. March 9, 1959 [March 13, 1958], No. 8107/59. Class 97 (1). Cinematograph projector incorporates switch means serving in operation to switch off the film feed, a switch actuating member operatively associated with said switch means and adapted, in operation, to occupy a position dependent on the tension of film running through the projector, and delay action means operating directly on said switch actuating member and serving to delay switching off said switch means after such switching off has been initiated by the film. As shown, film 1 passes over a fixed slide 2 and between rollers 5 and 6, roller 5 being mounted on one end of a lever 10 which is pivoted about a bolt 11 and has a rear arm operating a switch 12 controlling-through a relay-the current supply to the film driving motor. The roller is kept in contact with the film by its own weight or by spring-biasing, and opens the switch 12 if the film breaks or if its tension drops below a predetermined level. So that short fluctuations in film tension do not operate the switch, movements of lever 10 are delayed by an air-damped piston arrangement 13, 14. The film may also have metal coatings, for example 8 and 9, which co-operate with pairs of contacts 3, 31 and 4, 4<SP>1</SP> to control certain operations in the projector. An R.C. delay network may be associated with one of the pairs of contacts.
Patent GB-122108-A (GB)
Title: Improvements in Armor for Ships.
Inventor: DOWTHARD GEORGE WASHINGTON
IPC: B63B3/10
Filed: 1918-05-15
Abstract: 122,108. Dowthard, G. W. May 15, 1918. Armour.-A ship is protected against injury from projectiles by outwardly projecting rods of different lengths carrying beads 3, the heads on the longer rods overlying the heads on the shorter rods, and by tapering projections 2 terminating inwardly of the heads on the shorter rods. The rods and projections are preferably formed of hard steel. The heads are preferably conical. A cover S is provided to conceal the armour.
Patent GB-881979-A (GB)
Title: Production of alcohols
IPC: C07C29/16
Filed: 1960-03-08
Abstract: An olefinic compound having n carbon atoms in the molecule is converted into a primary alcohol having 2n+2 carbon atoms by reacting it with hydrogen and carbon monoxide in contact with a cobalt carbonylation catalyst and an aldox catalyst modifier separating a mixture containing dimeric and monomeric aldehydes from the product, separating the monomeric aldehyde from the dimeric aldehyde and catalytically hydrogenating the dimeric aldehyde.  The "monomeric" and "dimeric" aldehydes are defined as Cn+1 and C2n+2 aldehydes prepared from Cn olefines.  The aldox catalyst modifier comprises Group II metals, especially zinc, Group IV metals or Group VI metals and is preferably used in an oil-soluble form such as the salt of a fatty acid.  For the hydrogenation step a suitable catalyst is molybdenum sulphide on charcoal with a temperature of 300 DEG F.-550 DEG F. and a pressure of 1000-3000 p.s.i.g.  The monomeric aldehyde may be hydrogenated separately or recycled to the oxo reactor.  The invention is described with particular reference to the production of 2-ethyl hexanol from propylene, and C16 alcohols from C7 olefines. Specifications 682,177, 717,446, 742,879 and 776,998 are referred to.
Patent GB-1497802-A (GB)
Title: Safety razors
IPC: B26B29/00
Filed: 1975-01-27
Abstract: 1497802 Razors GILLETTE CO 27 Jan 1976 [22 Feb 1974] 8272/74 Heading B4B [Also in Division B8] A shaving unit comprises at least one blade 2 permanently clamped between a cap member 4 and a blade support platform 5 having a guard surface 6 and means 7 for attaching the unit to a handle, the unit being provided with a removable cover member 9 extending over the cutting edge of the blade and affording protection against damage while leaving exposed sufficient of the shaving unit to enable it to be grasped by the user and connected to the handle. The cover 9 may be integrally moulded with the cap member 4 and connected thereto by frangible portions (10) Fig. 2 (not shown) such that when the unit is required for use the cover can be broken away by means of a finger tab portion 11. In the modification shown in Fig. 6, the cover 19 is formed separately from the cap member 4 and is made from a resilient material such that it can be clipped onto the cap via a portion 21, 22; a finger piece 23 is provided to facilitate removal.
Patent GB-350558-A (GB)
Title: Improvements in and applicable to lifting devices such as jacks
IPC: B66F3/12
Filed: 1930-03-14
Abstract: 350,558. Lifting jacks ; jacking attachments for vehicles. DUIN, P. W., Bovenkerk, Nieuwer Amstel, Holland. March 14, 1930, No. 8291. Convention date, Jan. 27. [Class 78 (iii).] Lifting-jacks of the kind having a casing enclosing a screwed spindle carrying nuts connected by linkage to a base plate adapted to close the under side of the casing, have the nuts connected to the baseplate by a pair of links. The casing 1 encloses a right- and left-hand screwed spindle 5 with one end 12 projecting for actuation by a handle. Nuts 7 are mounted on the spindle and a pair of links 9 are pivotally connected at their upper ends to the nuts and at their lower ends to a baseplate 11 which when the jack is collapsed closes the under side of the casing. When applied to a vehicle, clamping plates 2 are secured by bolts 3 to a bearing block 6 and to the frame 4 of the vehicle.
Patent GB-846682-A (GB)
Title: Improvements in or relating to the hydrolysis of protein substances
IPC: A23J3/32
Filed: 1959-03-10
Abstract: A hydrolysed protein substance is obtained by mixing the protein substance with a strong volatile mineral acid, heating the mixture to a temperature of 90 to 140 DEG C. so as to hydrolyse the mixture, removing the hydrolysis products from the hydrolysed mixture when the ratio of their total nitrogen content to their amino nitrogen content is less than ten and greater than one, removing the acid from the hydrolysis products, and replacing the acid removed from the mixture as a result of the removal of the hydrolysis products.  The protein substance may be an extracted meat and the acid may be hydrochloric acid.  The removal of the hydrolysis products and replacement of the acid may be continuous, fresh protein substance and acid being continuously added so that the volume of the mixture and quantity of solid substance remains constant, or until the protein substance is entirely decomposed.
Patent GB-154116-A (GB)
Title: Improvements in and connected with fish traps
IPC: A01K73/12
Filed: 1920-03-20
Abstract: 154,116. Johnson, E. M. March 20, 1920. Traps; nets; net floats and buoys.-A fish trap comprises a top part, preferably a circular perforated metal tube 1 connected by twine-netting to a bottom part consisting of a series of similarly constructed concentric tubes 2, 3, 4 covered with wire mesh. The tubes 1, 2, 3, 4 contain endless, flexible tubes 15 inside which are perforated air-hoses 12, connected by tubes 6, 7, 8 to an air-compressor and exhauster ashore or afloat, so that the tubes 15 can be inflated. Flexible tubes 15 within the tubes 2, 3, 4 are then similarly inflated and eventually the whole trap is raised. Pumping the air out of the tubes 15 causes water to flow into the tubes 1, 2, 3, 4 and the trap sinks. Buoys a and lines b, which act as guides for the top part, can be used for fishing at any desired depth. Large traps are preferably made polygonally-shaped and the bottom may consist of a series of units. A weight may be hung on the bottom to prevent tilting.
Patent GB-549835-A (GB)
Title: Safety circuit for cathode ray tubes
IPC: H03F1/54
Filed: 1941-07-02
Abstract: 549,835. Electric protective arrangements. GAGE, E. G. July 2, 1941, No. 8336. Drawings to Specification. [Class 38 (iv)] To prevent danger of shock from high-tension sources, e.g. transformer secondaries, and condensers supplying the control voltage to the electrodes of cathode ray tubes and radio valves, without affecting their utility for this purpose, the sources are permanently connected with very high resistances, e.g. 20,000 ohms, so that when short-circuited by the human body the resulting current is limited to a safe value of a few milliamperes. In the case of a transformer secondary it may be wound with very fine high resistance wire to have the necessary inherent protective resistance, or such resistance may be connected in each pole of the transformer winding and enclosed within the earthed casing of the transformer. Similar added resistances may be used with a condenser and an additional high resistance be connected across it in order that dangerous charges may be allowed to leak away.