baber/WOPTO huggingface dataset:
Patent GB-278471-A (GB)
Title: Improvements in or relating to machines for opening or teasing horse-hair, wool or other staple
IPC: D01G9/14
Filed: 1926-07-24
Abstract: 278,471. Laycock, C. A. July 24, 1926. Openers, cleaners, &c.-In a machine .for opening or teasing hair, wool, &c. the toothed lags a of the cylinder are held in end plates or rims c so as to be slidable in a circumferential direction. The lags are connected together or to fixed stays e by springs f. The springs may be anchored to the rims, and a cover plate g attached to the lag may be used to protect them from dust &c.
Patent GB-869239-A (GB)
Title: Improvements in or relating to the manufacture of metallic grid structures
Inventor: MANLEY BRIAN WILLIAM
IPC: H01J9/14
Filed: 1958-06-10
Abstract: 869,239. Nickel plating baths. MULLARD Ltd. Feb. 27, 1959 [June 10, 1958], No. 18527/58. Drawings to Specification. Class 41. [Also in Group XXII] In a method of making metallic grids for electronic discharge devices, (Group XXII), a copper plate is first cleaned by scouring and then dipping in an acid solution comprising 100 ccs. HNO 3 , 100 ccs. H 2 SO 4'  1.5 gm. NaCl, 2 gm. carbon black and an equal volume of water. A nickel layer is deposited electrolytically on the cleaned plate using a solution comprising nickel sulphate, nickel chloride, boric acid and sodium fluoride. For a layer 0.002 inch thick, a current density of 20 amp/square foot for 200 minutes is used. A photo-mechanical resist is centrifugally coated on the nickel layer and the resist is exposed to a grid negative in a printing frame and developed. The uncovered portions of the nickel layer are removed by electroetching using a solution of 60% H 2 SO 4  and 40% water by volume.
Patent GB-1415996-A (GB)
Title: Process for the preparation of 2-chloro-5-sulphamoyl- benzoic acids
IPC: C07C301/00
Filed: 1974-04-29
Abstract: 1415996 Process for 2-chloro-5-sulphamoylbenzoic acids PFIZER Inc 29 April 1974 [26 Sept 1973] 18756/74 Heading C2C The invention comprises a process for the preparation of a compound having the general formula wherein R 1  is a hydrogen atom or an alkyl group containing from 1 to 4 carbon atoms; R 2  is an alkyl group containing from 1 to 4 carbon atoms or a group of the general formula wherein n is 0, 1, 2 or 3 and each of R 3  and R 4  is a hydrogen atom, a methyl group, or a chlorine or bromine atom, or R 1  and R 2  when taken together with the nitrogen atom to which they are attached form a morpholino, hexamethyleneimino, piperidino, or mono- or dimethylpiperidino group, which comprises contacting in a reaction-inert solvent a diazonium salt of the general formula with a metal chloride selected from CuCl, CuCl 2 , FeCl 2 , FeCl 3 , ZnCl 2 , CoCl 2 , AlCl 3 , HgCl 2 , NiCl 2 , SnCl 4 , CrCl 3  and SbCl 3  at a reaction temperature of 60 to 100 C.  The corresponding 2 - amino - 5 - SO 2 NR 1 R 2 - benzoic acids are also prepared as well as 2 - amino - 5 - chlorosulphonylbenzoic acid and 6-chlorosulphonylisatoic anhydride.
Patent GB-350735-A (GB)
Title: Improvements in or relating to the manufacture of compounds of manganese and rosin
IPC: C09F9/00
Filed: 1930-06-20
Abstract: A manganese resinate containing at least 4,5 per cent manganese is obtained by heating rosin with the requisite quantity of manganese dioxide at 300-315 DEG  C. until reaction is complete, and then rapidly cooling.  In operation the rosin is fused and raised to 250 DEG  C., and the manganese dioxide slowly sifted in without stirring. The temperature is then raised slowly to 300 DEG  C., the melt stirred, and the reaction completed at 310-315 DEG  C. The product is soluble in mineral oil and may be used as a drier for varnish compositions, or be added to mineral oil together with palmitic acid an be used in the purification of used mineral oil, for instance by the process described in Specification 242,272 [Class 91, Oils &c.]. A statement of the art refers to a "fused" resinate containing up to 3\ba1/2\be per cent of manganese, and a "precipitated" resinate containing up to 7\ba1/2\be-8 per cent of manganese.
Patent GB-1125428-A (GB)
Title: Improvements in and relating to methods of manufacturing semiconductor devices
IPC: H01L23/495
Filed: 1967-04-25
Abstract: 1,125,428. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 25 April, 1967 [28 April 1966], No. 19035/67. Heading H1K. In a method of manufacturing a semiconductor device moulded in an envelope of synthetic insulating material, the leads comprise parallel strips having connecting bars which form part of the wall of the mould cavity, the leads being subsequently separated by removing at least part of each connecting bar. As shown, Fig. 3, the leads 3, 5, 7 are manufactured in the form of a comb from a strip of sheet metal and have bars 31, 33 connecting them together near their free ends, to which a transistor die (not shown) is connected. The two parts of the mould are provided with a slot within which the leads and connecting bars lie while the transistor is encapsulated. The assembly is then removed from the mould, the centre part of each bar 31, 33 is removed and the leads are separated from the back of the comb. The use of connecting bars co-operating with a slot in the mould is said to prevent the liquid encapsulant from seeping from the mould between the leads. The projections (35) on the leads left by the removal of the centre part of each bar form stops to limit the depth to which the conductors can be inserted into perforations in a circuit board. The comb may comprise a plurality of sets of leads and adjacent sets may be connected together by a bar 37 so that a plurality of devices can be simultaneously encapsulated in a multiple mould.
Patent GB-240973-A (GB)
Title: Improvements in mechanism for discharging the contents from retorts used in the manufacture of gas
IPC: C10B33/08
Filed: 1924-08-12
Abstract: 240,973. Drakes, Ltd., and Drake, J. W. Aug. 12, 1924. Discharging.-In a retort discharging machine of the jointed ram type, movement of the machine in front of the bench while the ram 3 is within a retort is prevented by a safety switch 4 in the circuit of the traversing motor, the switch being held in the " off " position by a weighted. arm 14 while the ram is being operated, and until, at the end of the return stroke, a bracket stop 12 on the head section contacts with the switch operating-rod 7. A yielding connection between the rod 7 and the switch arm 6 is provided by a spring 9.
Patent GB-936037-A (GB)
Title: Improvements in measurements of volume rate of flow
IPC: G01F1/704
Filed: 1960-05-31
Abstract: 936,037. Flowmeters. E. B .BELL. Aug. 29, 1961 [May 31, 1960], No. 19287/60. Class 37. In an arrangement for determining the volume rate-of-flow of a gas along a pipe 2, a gas which does not react with the gas being measured, for example CCl 4 , is injected into the gas stream at a predetermined rate by a dispenser 3, and the mixture is sampled at a point downstream by a collector 5 which is connected to an ionization chamber 6, the changes in ionization providing a basis for the determination of flow measurement. The apparatus sensitivity may be increased by diluting the sample with an inert gas such as argon from a container 10. Graphs showing current/voltage and current/volume rate-of-flow relationships are described with reference to Figs. 1 and 3 (not shown). The measurements may be displaced or recorded on an ammeter, or from recorder 9 after amplification in 8.
Patent GB-1220498-A (GB)
Title: Aldimino-and ketimino-nitroaryl ethers and a process for their production
IPC: C07D213/53
Filed: 1968-04-24
Abstract: 1,220,498. Aldimino- and ketimino-nitroaryl ethers. FARBENFABRIKEN BAYER A.G. 24 April, 1968 [12 July, 1967], No. 19296/68. Heading C2C. The invention comprises compounds of formula wherein R is an (m+n)-valent aryl radical. R 2  and R 3  may be the same or different and are H or an alkyl, cycloalkyl, aryl or heterocyclic radical or together form a 6-membered isocyclic ring, z, m and n are 1 or 2 and R 4  is an aryl radical of valency (z 1). T e compounds are prepared by reacting a Schiff's base of formula or a compound which gives the base under the reaction conditions with an aromatic halonitro compound of formula X-R 4 (-NO 2 ) z  wherein X is F, Cl or Br in the presence of an acid acceptor. In examples the preparation of 4 - (benzylidene - imino) - 2<SP>1</SP>- chloro - 4<SP>1</SP> - nitrodiphenyl ether, 4 - (benzylidene - imino)- 4<SP>1</SP> or -2<SP>1</SP>-nitro-diphenyl ether and 4-(benzylidene - imino) - 21 : 41 - dinitrodiphenyl ether is described.
Patent GB-971059-A (GB)
Title: Motor speed controller of the variable resistance type
IPC: H02P7/295
Filed: 1963-05-15
Abstract: 971,059. Photo-electric motor-speedcontrollers. SINGER CO. May 15, 1963 [May 21, 1962], No. 19327/63. Heading G1A. A motor speed controller of the variable resistance type comprises an opaque enclosure having a base and a cover, a photo-cell mounted on the base, a light source mounted on the cover adjacent to the photo-cell, a shutter mounted for movement between the light source and the photo-cell to control the amount of light transmission therebetween, biasing means normally to position the shutter to cut off all light transmission and means including an operator controlled element for moving the shutter against the biasing means to effect control of the light transmission between the light source and the photo-cell. In the arrangement shown the photo-cell consists of a photoconductor 27 mounted in an opaque sleeve 29 which when the shutter 19 is in the closed position (shown in dotted lines) prevents stray light from reaching the photoconductor. The shutter 19 is operated by a pedal (Figs. 1 and 2 not shown) through a mechanical linkage against the action of a spring. Shutter blades of different configurations from that shown may be used, for obtaining a desired characteristic of controller resistance against pedal movement. Specification 953,061 is referred to.
Patent GB-1112231-A (GB)
Title: Method of gathering apples and like fruit,and apparatus for carrying out such method
IPC: A01D46/26
Filed: 1965-05-07
Abstract: 1,112,231. Gathering fruit. E. MULLER. 7 May, 1965 [19 May, 1964], No. 19331/65. Heading A1F. A device for gathering fruit from trees comprises a wheeled receptacle 10 for receiving the fruit, surmounted by an umbrella-like structure 1-9 which can be arranged around the tree 25 and which catches the fruit falling therefrom and conducts it, through a discharge aperture 26 into the receptacle which also forms a carrier for the umbrella. The umbrella is composed of outer and inner rings 1<SP>1</SP>-8<SP>1</SP>, 1<SP>11</SP>-8<SP>11</SP> interconnected by radial ribs 1-8, the rings having inter-telescoping segments so that the entire structure can be collapsed into the width of a single segment, which is approximately the width of the receptacle 10. The rings and ribs are covered with a canvas covering 9. Since the discharge aperture is offset, the ribs are shaped so that the aperture is at the lowest point in the cover (Fig. 3, not shown). For dealing with trees having trunks too large to be embraced by the central aperture, a separate cover may be provided for the central aperture, which is otherwise adjustable by radial plungers 18, engaging the trunk 25.
Patent GB-147452-A (GB)
Title: Improvements in drawing pins
IPC: B43M15/00
Filed: 1920-07-07
Abstract: 147,452. Atlas Maschinenbau Ges. July 8, 1919, [Convention date]. No Patent granted (Sealing fee not paid). Drawing - pins. - To rivet the stem of a drawing-pin &c. securely to the head, an annular rib f is formed on the riveting punch or die d to compress the material of the head b around the stem a.
Patent GB-256955-A (GB)
Title: Improvements in plant comprising internal combustion engines charging air compressors and exhaust turbines
IPC: F02B37/00
Filed: 1926-08-05
Abstract: 256,955. Buchi, A. Aug. 16, 1925, [Convention date]. Motor power plant.- In plant comprising an internal-combustion engine 1 exhausting into a turbine 9 and supplied with scavenging air by a compressor 5, a valve 16 is provided in the inlet conduit to the engine to prevent a flow of exhaust into the compressor, when the engine inlet and exhaust valves 14. 13 are open together and the exhaust pressure is higher than the compressor delivery pressure. The valve 16 may be automatic or controlled or it may be held open by linkage 17. A valve for the same purpose may be placed in the engine exhaust pipe 11 or the valve could be combined with the inlet or exhaust valve 14, 13.
Patent GB-775433-A (GB)
Title: A detachable device for operating the control switch of a portable drilling machine
IPC: B25H1/00
Filed: 1954-07-02
Abstract: 775,433. Drilling-machines. TAYLOR, J. H. June 7, 1955 [July 2, 1954], No. 19435/54. Class 83 (3). A portable drilling-machine 1 having lateral handles 3 and mounted for vertical feed on a pillar 2a by a hand-lever 4, has a sleeve 5 rotatable on the lever and connected by a Bowden-wire 7 to the switch 20 of the machine motor. A torsion-spring 6 biases the sleeve towards non-operative position and the cablecasing is attached to a bracket 8 on the feeding- spindle 9 of the machine. The other end of the casing 7b is attached to a bracket 11, Fig. 3, mounted on a handle 3 and carrying a pivot 15 for a lever 16 to which the cable 10b is secured. A stirrup 17a on lever 16 actuates the switchtrigger 13. In modifications for holding the sleeve 5 in the " switched-on " position, the spring 6 acts also as a compression-spring to snap a pin on the sleeve into a recess in the lever 4, or vice versa, or a spring-clip on the lever 4 engages a depression in the sleeve.
Patent GB-242718-A (GB)
Title: Improvements in or relating to safety razor blades
IPC: B26B21/50
Filed: 1924-08-16
Abstract: 242,718. Salerni, P. M. Aug. 16, 1924. Drawings to Specification. Razors, safety. The constructiun described is the same as that described in Specification 242,717 but the claims differ.
Patent GB-771851-A (GB)
Title: Improvements relating to projectiles, particularly rocket projectiles or bombs
IPC: B64D1/04
Filed: 1955-07-06
Abstract: 771,851. Rocket projectiles ; discharging from aircraft. AKTIEBOLAGET BOFORS. July 6, 1955 [July 9, 1954], No. 19499/55. Class 9 (2). Relates to rockets which are adapted to be fired electrically and suspended horizontally beneath an aircraft wing in vertical rows, the topmost rocket in a row being attached to the wing and each succeeding rocket being suspended from the rocket immediately above. Each rocket is provided with two projecting members and a recess so arranged that, when a second rocket is attached, the recess of the first rocket receives a shearable portion of a projecting member of the second rocket. The body 4 of the rocket 1 is provided with grooved guides 14, 15 which receive flanges of a support 11 fixed to the wing, similar flanges 17, 18 being provided on the rocket to engage the guides of rocket 2. Through a non-conducting body 32 extends a bar 33 biased by springs to project from each side of the rocket before attachment to the aircraft. On attachment to the support 11 the upper projecting end of the bar enters a recess in the support, the weakened portion of the bar being coincident with the junction of the rocket and the support. On attachment of the rocket 2, the bar 32 of rocket 1 is moved further into the recess of the support 11, so locking rocket 1 to the support. As the rocket 1 is attached to the support 11, the electrical circuit from a control device 23 within the aircraft is completed through contacts 26, 27 to an ignition device 44 for the rocket motor 5. When rocket 2 is put in position, movement of the bar 33 breaks the circuit to the ignition device 44 of rocket 1 and completes the circuit to the device 44 of rocket 2, so that rocket 2 must be fired before rocket 1. The rockets have a nozzle portion 6 from which project vanes 7, each vane being slotted so that the two upper vanes can engage the lower vanes of the rocket immediately above to support the rocket tail. The upper vanes of rocket 1 engage a device 10 depending fromthe wing 9. Specification 771,852 is referred to.
Patent GB-689545-A (GB)
Title: Improvements in or relating to clamping apparatus for use in fusion welding
IPC: B23K9/00
Filed: 1951-08-20
Abstract: 689,545. Welding by fusion. FORD MOTOR CO., Ltd. Aug. 20, 1951 [Aug. 24, 1950], No. 19586/51. Class 83 (iv). In an apparatus for clamping sheet metal parts edge to edge during electric fusion welding thereof, comprising a pair of opposed clamping members of which one has a groove for the reception of an electrode, the other member comprises a block of elastomer upon which is supported at least two laminations of highly heat-conductive metal. In one embodiment, two steel plates 10, 10 to be butt welded are held between an upper clamp 11, Fig. 1, having a groove 12 for an electrode, and laminations 16 of copper &c. supported by a sheet 15 of asbestos &c. on a block 14 of elastomer, e.g. of natural rubber. The block 14 is held in a lower clamp 13 which is movable to allow the positioning of the plates 10, 10. In a modification the block 14 is hollow and is supplied with hydraulic fluid so that its movement may replace all or part of that of the clamp 13. Coolant may be passed through the hollow block. In a further embodiment the block 14 is provided with metallic cooling conduits near its upper surface to replace the asbestos &c. sheet. In a modification two laminations 18, 19, Fig. 4, are welded together at their edges to form a hollow member for cooling water. The welding of aluminium, magnesium and mild steel by argon or helium-studded arc welding employing a tungsten electrode and a filler wire is referred to.
Patent GB-849973-A (GB)
Title: High frequency electrical apparatus
Inventor: O'DONOVAN HARRY MAURICE
IPC: G01R19/14
Filed: 1956-06-25
Abstract: 849,973. Electrical circuit assemblies; voltage measurements. PYE Ltd. June 25, 1957 [June 25, 1956], No. 19601/56. Class 37 A probe unit for high frequency voltage measurement comprises a tubular casing 1 divided transversely into a plurality of compartments by insulating discs 8a-8f, the disc 8a supporting a coaxial input socket 11, the adjacent compartment housing the rectifying elements of the probe, and the remaining compartments containing filtering inductors so that a filtered direct-current output is provided at the output socket 12 mounted upon the disc 8f. In the construction shown the casing comprises an inner cylindrical tube 2 of insulating material and an outer tube 3 of metal, there being an air space between the tubes 2 and 3 which provides thermal insulation for the components within the casing. The tube 3 is provided with a natural or synthetic rubber coating 7. An insulating end-piece 5 and a metal end-piece 6 close the ends of the casing, the end - pieces being suitably grooved to receive the ends of the tubes 2, 3, and being held in place by screws which pass through them and are received in threaded bushes on the discs 8a and 8f. The discs 8 are spaced apart in correct relationship by metal rods 9 which pass through and are soldered to metal eyelets in the discs. A conducting layer 14 is provided on the upper surface on the disc 8b. As a result of this construction, the unit is substantially air-tight and dust-tight but the inner structure of the unit may be readily removed from its outer casing. It is stated that the casing may alternatively comprise a single metal tube with an internal insulating layer or a single insulating tube with an external conducting layer. Specification 830,266 is referred to.
Patent GB-842685-A (GB)
Title: A combined pulse-counting and registering circuit
IPC: H03K23/82
Filed: 1958-06-19
Abstract: 842,685. Electronic counting - apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. (Philips' Gloeilampenfabrieken N.V.). June 19, 1958, No. 19651/58. Class 106 (1). In a pulse counting and registering circuit comprising a counting portion including a chain of cold-cathode tubes A1-A10 and a registering portion including one or more chains of coldcathode tubes such as B1-B10 and D1-D10, each tube A1-A10 has a probe electrode P at which a voltage appears when the tube is conducting, and the continued conduction of the last-ignited tube A1-A10, after receipt of a pulse train at 2, causes the voltage appearing at its probe electrode to ignite the corresponding tube in one of the registering chains. As shown, the circuit is generally similar to that described in Specification 714,667, the provision of the probe electrodes for controlling the registering chains permitting greater tolerances in the circuit components. The digit represented by the first received pulse train is transferred to B1-B10. Conduction of one of these tubes then raises the potential of line 5 and of points 7 connected to the trigger electrodes of tubes D1-D10 which are thus conditioned for transfer of the digit represented by the second pulse train.
Patent GB-421658-A (GB)
Title: Improvements in means for opening and closing vehicle or other doors
IPC: E05F15/02
Filed: 1933-07-11
Abstract: 421,658. Door-operating appliances. HAGGLUND, G. E., Ornsk÷ldsvik, Sweden. July 11, 1933, No. 19660. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 18, 1934.] [Class 65 (i)] Hinged or folding doors, particularly of vehicles, are operated by an electrically - controlled vacuum engine by means of a rack on the piston-rod of the engine engaging a toothed sector fixed on the door coaxially with the hinge thereof. Two doors 1, 2, mounted on hinges 3, 4, are shown, with toothed sectors 5, 6 fixed thereon to engage racks 7, 8 operated by the pistons of two cylinders 11, 12. The inner ends of the cylinders are connected by a pipe 19, and the outer ends by a pipe 18, with a slide valve 26 which at any time opens one of these pipes to the atmosphere and connects the other to a vacuum reservoir 22; the vacuum may be maintained by connecting the reservoir to the engine of a motorvehicle. The slide-valve is normally held in the position shown by an electromagnet 28, thus connecting the inner ends of the cylinders to the reservoir 22 and allowing atmospheric pressure to act on the outer sides of the pistons to close the doors ; when the circuit of the electromagnet is broken, the valve is moved to the left-hand position to open the doors. In a modification, the two pistons may be arranged in a single cylinder, the pipe 18 being connected to both ends of the cylinder and 19 to the middle.
Patent GB-1141613-A (GB)
Title: Improvements in or relating to field effect transistors
IPC: H03F3/193
Filed: 1966-05-04
Abstract: 1,141,613. Semi-conductor devices. SIEMENS A.G. 4 May, 1966 [5 May, 1965], No. 19669/66. Heading H1K. In a high frequency field effect transistor one or more control electrodes of insulated gate type are in the form of a delay line structure (e.g. interdigitated electrodes) with a delay direction parallel to the channel length. In Fig. 2, source and drain electrodes 5, 6 provide the field to cause carriers to drift in the channel underlying interdigitated insulated control electrodes 1 and 2 which are provided on both sides of the semi-conductor body 4. A high frequency signal 7; 7<SP>1</SP> is applied to one end of electrodes 1 and 2 and the carrier velocity and frequency are so phase related that as the carriers pass under the electrode fingers current is induced in the delay line structure to provide amplifier current at the other end 88<SP>1</SP> of the control electrodes. In a modification (Fig. 1, not shown) only two connections are made to the pair of interdigitated electrodes which act as a negative resistance due to the carrier-field phase relationship. Silicon may be used as the semi-conductor, the electrodes overlying an oxide layer and doping may be increased linearly along the channel to provide an effective constant channel width.