baber/WOPTO huggingface dataset:
Patent GB-1287021-A (GB)
Title: Improvements in attenuator circuits
Inventor: BARR COLIN
IPC: H03G11/02
Filed: 1970-04-13
Abstract: 1287021 Limiters C & E BRADLEY Ltd 19 April 1971 [13 April 1970] 17526/70 Heading H3T An attenuator, the attenuation of which increases for signals above a given level, comprises a pair of input terminals 11, 12 and output terminals 13, 14, the terminals 11, 13 being interconnected by means of a first impedance, comprising resistor 16 shunted by capacitor 15, and the output terminals 13, 14 having connected across them a second impedance, comprising resistor 18 shunted by capacitor 17. Also shunted across the output terminals 13, 14 is a series circuit comprising a third impedance, i.e. resistor 22 shunted by capacitor 21, in series with reversely connected diodes 19, 20 which may comprise Zener diodes. The arrangement may be modified for a balanced circuit by connecting a further impedance, identical with the impedance 15, 16 in series between the terminals 12, 14.
Patent GB-924467-A (GB)
Title: Improvements in or relating to hollow charge explosive devices
IPC: F42B1/028
Filed: 1959-05-22
Abstract: 924,467. Hollow charges for ammunition and blasting devices. RHEINMETALL G.m.b.H. May 22, 1959 [May 24, 1958], No. 17623/59. Class 9 (1) An explosive device includes a hollow charge with a liner, the arrangement of the charge and/or liner being such that on detonation, fragments of the liner are projected along the axis of the charge with a component of angular velocity relative to that axis. The angular velocity may be produced by forming the liner as a hollow cone having a stepped surface as shown in Fig. 1; the surfaces 2 of the sectors a-f may be arcs of circles or of spirals. Alternatively, the liner may be shaped as a spiral cone and formed by winding a strip of sheet metal. Other shapes of liner may be used, for example as described in Specification 907,878. Another method of producing the angular velocity is to use a normal circular cone liner and to insert in the explosive charge an explosive capsule having a speed of detonation different from that of the main charge. The projected particles may be used as a combat weapon or for blasting and enlarging holes in rock. As shown in Fig. 5, a secondary grooved projectile 18 may be attached to the liner 17; the main explosive charge 21 is fired by fuze 22, a high velocity and spin being imparted to the projectile.
Patent GB-716589-A (GB)
Title: Improvements in or relating to a fluidtight watch case
IPC: G04B37/08
Filed: 1952-07-15
Abstract: 716,589. Watches. DROZ, R. July 15, 1952 [July 16, 1951], No. 17820/52. Class 139 A fluidtight watch case is characterized in that it comprises a combined rim and case band having two internal grooves, one being adapted to receive a watch glass and the other a back, the watch glass and back being of plastic material, the back being adapted to be fitted into position in its groove by resilient deformation by peripheral compression by means of a clamping tool for the purpose of obtaining efficient fluid tightness of the case without the use of packing. The combined rim and case band 1, Fig. 1, has a groove 2 for receiving the plastic glass 4 and a groove 3 for receiving the transparent or opaque plastic back 5. The glass 4 has a groove 7 and the back a rim 11 for engagement by appropriate tools. The edge 8 of the glass rests on the dial 9 to hold the movement 6 against a shoulder 10 of the case band 1. The movement is introduced through the opening for the glass. In a modification, Fig. 2 (not shown) the glass 4 has no groove 7, the case band has no movement supporting shoulder 10 and the movement is introduced through the opening for the back. The back 5 may have a groove 23, Fig. 3, for receiving a metal disc or ring 22 which forces the edge of the back 5 into the groove 3.
Patent GB-1343568-A (GB)
Title: Process for decreasing the flammability of textile material
IPC: D06M15/673
Filed: 1972-04-18
Abstract: 1343568 Phosphonic acid esters BURLING- TON INDUSTRIES Inc 18 April 1972 [4 May 1971 7 April 1972] 17181/72 Heading C2P [Also in Divisions C3 and D1] N - methylol - 3 - (diallylphosphono)propionamide is prepared by reacting diallyl phosphite with acrylamide in allyl alcohol and then reacting the product with formalin. N-methylol-3- (bis[2,3 - dibromopropyl]phosphono) - propionamide is prepared by reacting 3-(diallyl phosphono)-propionamide with bromine and reacting the product with paraformaldehyde.
Patent GB-199945-A (GB)
Title: Improvements in and relating to wind screens for motor road vehicles
IPC: B60J1/20
Filed: 1922-06-30
Abstract: 199,945. Connolly, W. J., and Sandham, P. H. June 30, 1922. Windscreens. - A side windscreen for a motor or like vehicle comprises a sheet of celluloid a surrounded on its top, rear and bottom edges with rigid reinforcing strips b, b<1> of metal or like materal, while its front edge c is flexible and adapted to be curved when making contact with the front screen so as to make a wind and water-tight joint, the whole screen being pivotally mounted at its lower edge on the side of the vehicle. The flexible front edge c is preferably obtained by terminating the rigid strips b, b<1> at a point c<1> a short distance from the front edge and continuing the reinforcement by short flexible metal strips fixed to a rigid front strip b<2>, beyond which the celluloid is continued to form the extreme edge. The metal strips are covered with a binding b<*> of leather or like material, and a depending strip d of textile material is fastened to the lower edge b<1> to constitute an apron. The screen is mounted for adjustment about two axes at right angles to each other by a fitting comprising a male coned member e<1>, Fig. 3, attached to the side or door of the vehicle, a second member e<4> having both male and female coned parts, and a female coned member e<7> having an extension e<8> attached to the screen. Clamping-screws e<3>, e<6> lock the coned portions in engagement.
Patent GB-698573-A (GB)
Title: Improvements in automatic light flux adjusting devices
IPC: G03B7/085
Filed: 1951-07-30
Abstract: 698,573. Photo-electric camera exposure control. SOC DE FABRICATION D'APPAREILS DE CINEMATOGRAPHIE (EN ABREGE SOC. FACINE). July 30, 1951 [July 31, 1950], No. 18028/51. Class 40 (iii). The light flux incident on the film of a camera is adjusted by a photo-cell which is subject to the same illumination conditions as the camera objective and which adjusts also the light incident on the cell so as to maintain the light intensity on the film constant. Fig. 7 shows the invention applied to an ordinary photographic camera, the objective of which consists of a compound lens 1b which focuses light on to a film 26. Situated below the objective is an opening 29 through which light passes to a photo-electric cell 3b through a pair of polarizing screens 17b, 18b. Screen 18b is fixed, but screen 17b is mounted on the shaft 7b of a moving-coil meter fed from the cell output. On the other end of the same shaft is one of a pair of arms forming a shutter in the path of the light through the objective. The shutter construction is shown in Fig. 5. Arm 8 is carried on the meter shaft 7 and is geared at 14 to the other arm 13 of the shutter so that the two arms move in opposite directions. An embodiment is described, Figs. 1, 4 (not shown), in which a shutter rotated by a meter is in the form of a maltese cross and co-operates with similar apertures in a fixed plate in the path of light to the photo-cell, while in the embodiment of Fig. 6 (not shown) polarizing screens are used in both light paths, the movable screen in the photo-cell light path being geared to that in the path of the light passing through the camera objective. A manually adjusted mask may be provided in addition to the movable one and exposure adjusting factors may be taken care of by devices in the photo-electric cell circuit used as variable resistors, the movable elements of which may be geared to the exposure time adjusting member, the member for taking account of film sensitivity, or the aperture diaphragm. In the embodiment of Fig. 9 (not shown) the light path to the film includes polarizing screens and an adjustable shutter, while a further manually adjusted screen of " Polaroid " (Registered Trade Mark) is included in the photo-cell light path. Two further constructions of adjustable shutter are described, Figs. 10 and 11 (not shown). In Fig. 10 the two parts of the shutter are connected to the meter movement by links and in Fig. 11 a cam works between the two halves of the shutter to open and close them.
Patent GB-676304-A (GB)
Title: An improved shaving brush
IPC: A46B15/00
Filed: 1949-07-08
Abstract: 676,304. Shaving brushes. GWILLIAM, V. C. E. MARTEN-. Jan. 26, 1950 [July 8, 1949], No. 18041/49. Class 19. A shaving brush having a hole or aperture of any longitudinal or transverse section and open at the end of the handle remote from the bristles, the said hole being disposed longitudinally and having its axis either coincident with or parallel to or slightly inclined to the axis of the handle and, being terminated by a plug or partition which is secured adjacent to the root of the bristles, is adapted to receive a finger of the hand to assist in holding the brush when shaving. In Figs 2 and 5 the brush handle 1 has an aperture 2 provided with a groove 4 into which the edge of the hemispherical cup 3 is snapped and cemented after fitting the bristles. Alternatively a plug as shown in Fig. 4 may be inserted and the groove may he dispensed with. The handle has a flange 6 to form a drip guard below the bristles, a polygonal base 8 and circumferential fins 9.
Patent GB-578400-A (GB)
Title: Improvements in or relating to the manufacture of electrical condensers
IPC: H01G4/26
Filed: 1944-04-27
Abstract: 578,400. Condensers. HUNT, Ltd., A. H., GROUSE, R. A., and BETTRIDGE, F. L. G. April 27, 1944, No. 18074. Divided out of Complete Specification of 565,874. [Class 37] A multi-layer condenser has electrode plates covered with oxide, a layer of metal of " selfhealing " thickness deposited on the dielectric and metallised paper interleaved with the oxide and metal-covered plates to afford electric connection with the deposited metal without interfering with the " self-healing " properties. In the example the plates 11, of aluminium or magnesium are doubled over, oxidised as at 13, metallised as at 12, assembled in a stack with paper 14 metallised on one or both sides wound zig-zag between the middle parts of the plates. The edges that would be exposed are covered with folded-in strips of paper 15 metallised on the outer face only. The ends of the strips 11 are riveted together and form one terminal, metal 21 sprayed on the metallised paper 14, 15 forming the other. Specifications 396,453, 485,965, [Group II], and 563,080 are referred to.
Patent GB-110246-A (GB)
Title: Improvements in and relating to Electric Motor Control Systems.
IPC: B60L15/34
Filed: 1916-12-16
Abstract: 110,246. British Thomson-Houston Co., (General Electric Co.). Dec 16, 1916. Master control systems.-The notching relay D used in the system described in Specification 11658/15 is provided with a shunt coil 56, the circuit of which is completed through the contacts H while the controller M is moving from one position to the next. The coil assists the main coil of the relay and renders the relay more sensitive to changes in the main current.
Patent GB-1048152-A (GB)
Title: Improvements in or relating to rotary hydraulic machines such as turbines, pumps, and reversible pump-turbines
IPC: F03B11/00
Filed: 1964-05-01
Abstract: 1,048,152. Hydraulic turbines; centrifugal pumps. DOMINION ENGINEERING WORKS Ltd. May 1, 1964 [June 10, 1963], No. 18147/64. Headings F1C and FIT. Leakage preventing means in an hydraulic turbine, pump or reversible pump-turbine including a rotary member mounted for rotation relative to a static member, consists in supplying fluid of relatively low density, which may be air, to an annular space formed between the two members and preventing this fluid from escaping from the annular space by forming two zones of restricted clearance between the two members and bounding the annular space, and supplying a relatively high density fluid, which may be water, to at least one of the zones of restricted clearance to form a fluid seal therein. Air is supplied to an annular space 18 surrounding the runner 13 of a Francis turbine. The lower zone of restricted clearance is formed by the co-operation of the runner band 29, the stator 19, rings 20 and 34, and base ring 32. The inner surface 21 of the stator is provided with an annular groove 26 to which water is supplied through duct 24. It is stated that a standing water seal is formed in the outer region of the annular gap 25 between rings 34 and 20. Several modifications, Figs. 3-7 (not shown), of the zone of restricted clearance include runner bands, stators and associated rings of slightly different shapes to provide zones of restricted clearance of varying configurations to each of which water is supplied in a manner similar to that illustrated in Fig. 2.
Patent GB-368172-A (GB)
Title: Improvements in change speed gear
IPC: F16D11/12
Filed: 1931-06-23
Abstract: 368,172. Variable-speed toothed gearing ; clutches. MADSEN, J., 6, Lokkegade, Aalborg, Denmark. June 23, 1931, No. 18154. [Class 80 (ii).] In variable-speed gearing of the countershaft type for motor cars &c., shock-reducing clutches for direct drive between the driving and driven shafts 1, 2 and for connecting loose gear wheels to the said shafts are of the form in which axially slidable cones 4, 6, 12, 14 are moved to press radial pins 16 in one clutch member 3 inwards into the path of spring- supported pins 18 in the other clutch member 5.
Patent GB-1502878-A (GB)
Title: Apparatus and method for electroplating
IPC: C25D17/00
Filed: 1975-05-01
Abstract: 1502878 Current connections in strip electroplating NATIONAL STEEL CORP 1 May 1975 [24 July 1974] 18154/75 Heading C7B Strip material to be electro-plated is passed over a partially immersed roll 5 having longitudinal contact segments 15 separated by insulation 17, current being selectively delivered to each segment e.g. by conductors 19 (insulated at 23) passing through a bath seal 37 to a commutator 25 of similar construction. An arcuate anode, which may comprise several electrically separate parts, is used. Brush(es) 33 supply current only to immersed parts of the strip; separate brushes allow varying power supply to the segments (a split anode then being used). Another embodiment Fig. 6 (not shown) utilizes for connecting the commutator and roll proper a "squirrel cage" of conductive rods which pass through a flexible circular seal leaving a peripheral groove engaging the bath.
Patent GB-239666-A (GB)
Title: Improvements in or relating to the manufacture of horse shoes
IPC: A01L1/02
Filed: 1924-06-13
Abstract: 239,666. Fenemore, G. A. June 13, 1924. Constructional details of metal shoes.-A horseshoe is made from a length of mild steel bar formed with two sets of oppositely inclined cogs b, c. The metal d between the two central cogs is thickened to provide for the formation of a toe-calk.
Patent GB-226750-A (GB)
Title: Electric liquid-break switches
IPC: H01H33/55
Filed: 1924-07-31
Abstract: 226,750. British Thomson-Houston Co., Ltd., (General Electric Co.). July 31, 1924. Oil switches are provided with heat-insulating linings for the cover and the upper part of the casing to reduce condensation of moisture in the air space above the oil level. The sheet-metal switch casing 8, Fig. 1, is supported on channel iron members 12 placed at the bottom of a concrete-lined pit 1 sunk into the ground. The space between the sides of the casing and pit is filled with sand &c. Where the lining and switch casing 8 project above ground level they are reinforced by a tie-belt structure 2. A cover 3 is bolted on the casing by bolts 14 which project down through the channel members 12, a gastight gasket 10 being interposed between a flange on the cover and an angle-iron member 9 secured to the switch casing 8. The inside of the cover, together with the upper part of the switch casing 8 and the external walls of the insulating bushings 4 are provided with a layer of heat-insulating material 18 to reduce condensation in the air space above the level of the insulating liquid 7. To prevent moisture from entering this space during the breaking action of the switch air from outside passes first through a container 25 filled with asbestos 29 soaked in sulphuric acid 30 and then through a vessel 23 containing calcium oxide to remove acid which has passed over. Where the pipe 22 from this vessel enters the switch casing a valve 33, 34 is provided and is operated an increase of pressure to prevent oil and gas from entering the dehydrating apparatus. In a further modification described in which the switch is completely buried in the ground below the frost level, heat insulating jackets are placed around all parts projecting to the ground level including the lead-in insulators, the stuffing box for the operating rod and the manhole casing.
Patent GB-1023808-A (GB)
Title: Grinding wheel dressing means and process
Inventor: RADEMACHER FRANK JOHN
IPC: B24B53/12
Filed: 1964-05-04
Abstract: 1,023,808. Dressing grinding wheels; blasting. EX-CELL-O CORPORATION. May 4, 1964 [May 6, 1963], No. 18378/64. Heading B3D. A device for dressing a grinding wheel comprises a diamond tool and mechanism for introducing grit and fluid under pressure into the device, for mixing the same therein, and for blasting the grit and fluid in a pressure stream therefrom to grit-blast the loading off the working face of the grinding wheel whilst the latter is being dressed by the diamond tool. A diamond tool 5 is sintered in a holder 6 secured in a head 7. A venturi 8 in the head 7 is supplied with pressure air through conduit 13 and with abrasive grit through conduit 15 and passage 10. The venturi outlet is connected to a nozzle 12. Coolant is supplied through conduit 17 to a passage 14 in the head connected to a nozzle 18. The head 7 is secured by a screw 22 on the shank 23 of a spindle 24 forming part of the grinding machine and arranged to traverse the working face of the grinding wheel 3.
Patent GB-913650-A (GB)
Title: Coating metals with amino-alkyl silicon compounds
IPC: C07F7/08
Filed: 1960-05-25
Abstract: Metals below and including magnesium in the electromotive series, and alloys thereof, are coated with a film of a secondary and/or tertiary aminoalkyl silicon compound containing the group: >N-R-Si­, wherein R is a divalent saturated hydrocarbon radical having a chain of at least 3 carbon atoms and wherein nitrogen is attached to at least a third carbon atom removed from silicon, wherein at least one of the free bonds of the nitrogen is bonded to an aminoalkyl radical or a hydrocarbyl, amino-alkyl or [-(CH2)aSi­] radical wherein "a" is an integer having a value of at least 3, and wherein at least one free bond of silicon is attached to an alkyl radical or silicon through Si-O bonds and the remaining free bonds of silicon are attached to a hydrocarbyl group; the compound is cured to form an adherent coating. Specified metals include magnesium, aluminium, zinc, chromium, steel, tin, tinplate, terne-plate, lead, copper, brass, bronze, p  silver, silver plate or sterling silver.  The aminoalkyl silicon compounds may be employed as monomers, polymers or copolymers. In an example, copper panels are treated with mixtures of water, alcohol, and N-betaaminoethyl - gamma - aminopropyl - trimethoxy - silane, N-beta-aminoethyl-gamma-amino-butylmethyl diethoxysilane, or N-gamma-aminopropyl-gamma-aminobutyl triethoxy-silane, airdried, and cured in an oven at 150 DEG C.  The treated panels have improved corrosion-resistance.
Patent GB-230708-A (GB)
Title: An improved spanner, pipe wrench, or the like
IPC: B25B13/18
Filed: 1924-08-01
Abstract: 230,708. Godde, Bedin, et Cie, Successeurs d'A. July 7, 1924, [Convention date]. Sliding-jaw wrenches.-A spanner, pipe wrench, or the like comprises a fixed slotted jaw A on the shank of which is pivoted an operating lever E, a jaw C slidable on the shank of the fixed jaw A and having a pivot pin H passing through the slot B in the jaw A, and a link or links F connecting the pivot pin H with a pivot G on the operating lever E, so that angular movement of the lever E reciprocates the movable jaw. The pivot G may be placed in any one of a number of holes in the lever E. The jaws may be smooth or provided with teeth, and may be parallel or shaped to grip hexagonal nuts or pipes.
Patent GB-1529539-A (GB)
Title: Method of fabricating a fuel cell electrode
IPC: H01M4/88
Filed: 1977-05-03
Abstract: 1529539 Coating electrodes UNITED TECHNOLOGIES CORP 3 May 1977 [15 June 1976] 18482/77 Heading B2E A fuel cell electrode is obtained by forming a uniform aqueous suspension of electrocatalyst and a hydrophobic polymer, adjusting the pH of the suspension to within the range 1.5 to 6 or from 10 to 12 to form a flocculate, applying the flocculate onto a conductive support to form a catalyst/polymer layer and heating to sinter the layer. Suitable polymers are polytetrafluoroethylene, polytrifluorochloroethylene, polyvinyl fluoride, polyvinylidene fluoride, polytrifluoroethylene, polyfluoroethylenepropylene, perfluoroalkoxypolyethylene, and copolymers of these. The preferred electrocatalysts are nickel, iron, gold, copper, palladium, platinum, rubidium, ruthenium, osmium and iridium and alloys of these.
Patent GB-662439-A (GB)
Title: Improvements in the control of electrically driven vehicles
Inventor: ROSE ALFRED GERMAN
IPC: B62D51/00
Filed: 1948-07-09
Abstract: 662,439. Electrically-propelled hand vehicles. ROSE BROS. (GAINSBOROUGH), Ltd. July 6, 1949 [July 9, 1948], No. 18487/48. Classes 79(iii) and 79(v) In a control mechanism of an electrically propelled hand vehicle a driving wheel is driven by a reversible electric motor controlled by a slidable member arranged for movement relatively to the vehicle to each side of a neutral position to operate a variable speed device, progressive movement of the slidable member in either direction on either side of the neutral position progressively increasing or decreasing the speed of the motor according to the direction of such movement. As shown the invention is applied to a trolley, from the body 11 of which extends an under-frame 14 carrying batteries 24 and the reversible motor 19. The motor 19 drives wheels 12 through a flexible coupling 21, worm reduction gearing 22 and a differential. Wheels 13 are freely mounted in a forked bracket 16 pivoted in a bearing member 17 on the body 11. Secured to the bracket 16 is a steering handle 18 carrying the variable speed device 26 which consists of a pair of rheostats 27, 28. A contact arm 26 for the rheostats is connected by an arm 31 and a link 32 to a forked arm 33, pivoted to a bearing member 34 on the handle 18. The arm 33 engages a groove 37, Fig. 2, on the handle 18. The arm 33 engages a groove 37, Fig. 2, on a T-shaped hand grip 38 suitably keyed for sliding movement on a shaft 39 extending from the handle 18. The hand grip 38 is moved in opposite directions from the neutral position shown in Fig. 2 to prcgressively increase speed of the motor in the desired direction. The hand grip 38 is returned to the neutral position by a spring 41 having flanges 42, 43 and arranged between a shoulder 46 on the shaft 39 and a collar 44 secured to the shaft 39.