baber/WOPTO huggingface dataset:
Patent GB-762074-A (GB)
Title: Improvements in or relating to internal combustion engines and pistons therefor
Inventor: MANSFIELD WILFRED PERCIVAL
IPC: F02D15/04
Filed: 1952-06-10
Abstract: 762,074. Driving-gear; charge pumps. BRITISH INTERNAL COMBUSTION ENGINE RESEARCH ASSOCIATION. June 3, 1953 [June 10, 1952; Aug. 12, 1952; Nov. 11, 1952], Nos. 14602/52, 20267/52 and 28402/ 52. Class 7 (2). [Also in Group XXVI] To give a compression ratio varying inversely with engine load, an I.C. engine piston has two relatively axially movable parts 1, 6, defining chambers 7, 8, of reciprocably variable volume fed with oil or other liquid from a common passage 9, 10 via respective one-way valves 11, 12, and passages (not shown) and having discharge passages and, in the case of the chamber 7, a discharge valve but not being in effective mutual communication. As shown the chambers 7, 8 discharge via oneway piston valves 13 and an adjustable orifice 29 respectively but the valves 13 may be replaced by a single annular spring plate valve and the orifice 29 by leakage along the piston surface. The passage 9, 10 also supplies a cooling chamber 28, via passages 26, with oil discharged via passages 27. The valve 12 may be in the gudgeon pin 2. In operation, due to the small size of the orifice 29, with decreasing load the piston gradually increases the compression ratio accordingly over a number of engine cycles but, due to the large size of the valves 13, with increasing load the piston quickly decreases the compression ratio accordingly. The invention is applicable to two-stroke or four-stroke engines with an effective expansion stroke greater than the effective compression stroke and an exhaust driven charge compressor. The Specification discusses in detail the working conditions obtainable when the invention is used in conjunction with an air or combustible mixture charge compressor, particularly the variabledelivery compressor of Specification 665,484 [Group XXVI] especially when driven by an exhaust gas turbine which may have a variable nozzle area, and/or when charge cooling is used. Compounding by using an exhaust gas turbine to drive the engine shaft or another shaft, when the engine may be merely a gas generator driving a charge compressor, is also discussed. Specification 762,110 also is referred to.
Patent GB-643937-A (GB)
Title: Improvements in and relating to hydraulic high-pressure rotary engine or pumps
IPC: F04C2/36
Filed: 1948-05-31
Abstract: 643,937. Rotary engines or pumps. BAGHUIS, L. H. May 31, 1948, No. 14644. Convention date, July 21, 1947. [Class 110(ii)] The engine or pump has a stator 2, a rotor 3, rotary abutments 8 which are geared to the stator and loosely mounted pistons 6, 7 kept in position by the teeth on the stator. The meshing teeth of the parts 2, 3 extend axially beyond the length of the pistons and the working chamber. Working fluid enters and leaves through ports 5, 5a. Specification 602,836 is referred to.
Patent GB-235558-A (GB)
Title: Improvements in adjustable carburettors
IPC: F02M1/00
Filed: 1925-06-08
Abstract: 235,558. Salvatori, A. June 10, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Spray carburettors.-A multi-jet carburettor comprises a body 1 provided with air inlets 5 adjacent fuel nozzles 4 which are brought into action in succession by a hollow rotary throttle 6 provided with ports 8 of varying length. Each fuel nozzle consists of a tube 12 having a conical end engaging the outlet of the fuel passage 3, and provided with a fuel inlet 11, an air inlet 14, and aerated fuel outlets 13.
Patent GB-888699-A (GB)
Title: Improvements in and relating to electrical energy regulators
Inventor: HUMM ROBERT WILLIAM
IPC: H05B1/02
Filed: 1957-05-10
Abstract: 888,699. Interrupters. ENGLISH ELECTRIC CO. Ltd. May 8, 1958 [May 10, 1957], No. 14811/58. Class 38 (5). A regulator for the heating elements of a cooking stove comprises a resiliently supported beam arranged to be longitudinally reciprocated and carrying at least two contacts, each of which co-operates with an adjustable " fixed " contact. In one form, Fig. 2, an insulating beam 35 is carried by springs 36 and is connected by a resilient wire 34 to an eccentric 33 driven by an electric motor which may be that of a timer unit on the stove. The beam carries contacts 37 connected by leads 38 to terminals 39 and co-operating with contacts 40, the positions of which are individually adjustable by cams 41 on spindles 42. Each spindle also carries a cam 45 actuating contacts 46 which control an indicator lamp (not shown), and which may control a separate drive motor. The contacts 40 may be adjusted so that they are permanently closed or permanently open or are closed for any desired fraction of a cycle therebetween. In a modification, Fig. 4, the movable contacts 61 are directly secured to struck-out parts 60 of a conductive beam 50 which is connected to terminals 64, the contacts 61 being adjustable to a small extent by screws 63. The rotation of the cam spindle is limited by the engagement of projections 72, 73 and the spindle is located in its " off " position by a projection on one of the indicator contacts 74, 75.
Patent GB-345558-A (GB)
Title: Improvements in the reconditioning of worn sole plates for railway rails
IPC: B21K9/00
Filed: 1930-05-14
Abstract: 345,558. Reworking worn railway chair plates. OBERBAU GES. FœR ERNEUERUNG VON EISENBAHNBAUSTOFFEN IM IN-UND AUSLANDE, 22A, Potsdamerstrasse, Berlin. May 14, 1930, No. 14852. Convention date, Aug. 27, 1929. [Classes 83 (ii) and 83 (iv).] A sole -plate 1 for railway rails is reworked in dies by pressing in metal 6 from the underside to make up wear in the bolt holes 2 and at the sides 3, 4 of the flange recess, leaving a projecting rim 7 round the sole so proportioned as to sink into the sleeper whereby it is held firmly in position.
Patent GB-866167-A (GB)
Title: Improvements relating to switch contact assemblies
IPC: H01H50/56
Filed: 1958-05-09
Abstract: 866,167. Contact-members for switches. MIDGLEY, F. May 8, 1959 [May 9, 1958], No. 14873/58. Class 38 (5). A contact stack has insulating layers 1 with aligned holes 2 having co-operating projections 4 and recesses 5 arranged so that the contact springs 6 are held between projections 4 when the layers are clamped together by bolts 3 and nuts 11. The springs 6 are indented at 7 to engage the projections 4 for positive location and the upper layer 8 has larger holes 9 to receive the projections 4 of the adjacent layer.
Patent GB-725882-A (GB)
Title: Improvements in or relating to closures for containers made of plastic
IPC: B65D43/02
Filed: 1953-05-28
Abstract: 725,882. Container closures. JARNAKER, E. K. May 28, 1953, No. 14907/53. Class 125 (3). A container 2 of plastic and having a sealing ridge 3 formed with a chamfer 4 is closed by a lid 1 of plastic and having an inwardly projecting bead 7 and sealing surface 6, the lid being elastically deformed when applied so that the ridge 3 engages the surface 6 and bead 7 engages beneath ridge 3 to prevent displacement of the lid. An enlargement 8 ensures automatic centralisation of the lid and it is stated that the lid should be more elastic than the container by making for example the container of polystyrene, cellulose acetate or cellulose-acetone-butyrate and the lid of a soft polyethylene or a softened polyvinyl chloride.
Patent GB-611024-A (GB)
Title: Improvements in or relating to binders for use in the manufacture of bats, boards, sheets or the like of fibrous glass
IPC: C09J161/24
Filed: 1944-08-08
Abstract: A binder for use in the manufacture of boards, sheets or the like of fibrous glass consists of a mixture of a phenol-formaldehyde or urea formaldehyde synthetic resin, ammonium caseinate, the resin sold under the Registered Trade Mark "Vinsol," mineral oil and ammonium stearate.  Specification 558,654 is referred to.  The Specification as open to inspection under Sect. 91 comprises also a binder made of "Vinsol" and phenol formaldehyde or urea formaldehyde synthetic resin only.  This subject-matter does not appear in the Specification as accepted.
Patent GB-709250-A (GB)
Title: Improvements in self-excited transductors
IPC: H03F9/04
Filed: 1952-06-16
Abstract: 709,250. Magnetic amplifiers. ALLMANNA SVENSKA ELEKTRISKAAKTIEBOLAG ET. June 16, 1952 [June 16, 1951], No. 15061/52. Class 40 (4) In an auto - excited transductor in which the control current is applied directly to the load windings 2 as described in Specification 704,349, the two half-wave rectifiers 6 are shunted by a resistor 8, while a resistance with a positive temperature coefficient or a further transductor is connected in the control circuit. The rectified currents through the load windings provide positive feedback while the shunt resistors, or alternatively the reverse current through the rectifiers, provide negative feedback which acts during the non-conducting periods of the rectifiers. In this arrangement, an increase in the control voltage initially increases the control current and the magnetization of the transductor cores is correspondingly augmented so that the load winding currents increase. This causes an increased voltage drop in the windings which acts in opposition to the control voltage so that the control current is reduced to a stabilized value lower than its initial value. If the A.C. current through a load 3 is interrupted it follows that the control current reaches a high value and may have unstabilizing effects on the control circuits of other transductors. The magnitude of the control current is therefore limited by a series resistance with a positive temperature coefficient or a glow tube 9, Fig. 1. Alternatively the control circuit may be decoupled from the control voltage 7 by a further transductor 10. As shown in Fig. 2, transductor 10 has a control winding 10<SP>1</SP> and a winding 10<SP>11</SP> which is energized by the rectified output of a current transformer 11 connected in series with load 3. The two windings act in opposition, and an increase in control voltage initially increases the rectified control current to load windings 2. This control current then falls as the load current rises and its reduction is assisted by the demagnetizing effect of winding 10" until a condition of equilibrium is reached before the control current falls to zero. In a modified arrangement, Fig. 3 (not shown), the current transformer is omitted and winding 10<SP>11</SP> is connected in parallel with the load over a bridge rectifier 17 as shown in Fig. 4. In the latter figure the rectified output of transductor 10 controls a transductor 12 which is connected to the load windings 2 over additional halfwave rectifiers 6. Where a D.C. output is required, the load 3 is connected to the D.C. terminals of rectifier 17, Fig. 5 (not shown). A further arrangement, Fig. 6, comprises a number of transductors which are controlled from a potentiometer 13 though individual transformers 16 which have their primary windings connected in series.
Patent GB-129868-A (GB)
Title: Improvements in Apparatus for Coating Papers, Fabrics or the like, with Waterproofing or other Mixtures or Materials.
Inventor: FARQUHARSON WILLIAM THOMSON
IPC: D06B3/10
Filed: 1918-09-18
Abstract: 129,868. Farquharson, W. T. Sept. 18, 1918. Coating fabrics in long lengths.-In apparatus for coating paper &c. with water-proofing and other materials, the paper is drawn over the gauzecovered and perforated side of a receptacle a, preferably tubular, containing the coating material. A slot g is formed in the side' of the receptacle, and this is partially covered by a perforated plate h secured by serews j leaving an upper opening k through which surplus liquid is returned to the receptacle from a roller l serving as a scraper. The plate h is covered by a length of gauze &c. n secured by a screw o and a tightening- device q. Spring bands u may be placed round the receptacle to prevent the margins or other portions of the paper from being coated. The liquid, suitably heated, is supplied from a tank, and steam pipes e may be provided to maintain its temperature in the receptacle a.
Patent GB-681488-A (GB)
Title: An improved identification bracelet
IPC: A44C5/20
Filed: 1950-06-17
Abstract: 681,488. Bracelets. WHITFIELDS BEDSTEADS, Ltd., and WHITFIELD, C. G. May 28, 1951 [June 17, 1950], No. 15181/50. Class 43. [Also in Group XV] An identification bracelet  comprises an elongated transparent sheath a to re ceive a slip of paper d and a band b having a series of holes b'. The band and sheath are held together by studs c engaging in holes b<SP>1</SP> and a<SP>2</SP>. The bracelet is preferably of pliable plastic material such as polyethylene.
Patent GB-375954-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C25/60
Filed: 1931-05-22
Abstract: 375,954. Energy-absorbing elements. HAVILLAND, G. DE, White House, Stanmore, and DE HAVILLAND AIRCRAFT CO., Ltd., Stag Lane Aerodrome, Edgware, both in Middlesex. May 22, 1931, No. 15193. [Class 103 (i).] A collapsable metal tube 5 corrugated throughout a part or the whole of its length is combined with resilient shock-absorbing means for aircraft, the tube 'being adapted to come into operation at a predetermined load which is in excess of that which the resilient means is designed to accommodate. Superimposed rubber blocks 2 are housed within a streamline casing 1 provided at its upper end with a bracket or shackle 3 for attachment to the body of the aircraft. A portion of the inner telescopic member 4 may be associated with any energydissipating device. The collapsing load may be equal to three times the normal weight of the aircraft.
Patent GB-1378486-A (GB)
Title: Punch presses
IPC: B21D28/36
Filed: 1972-01-26
Abstract: 1378486 Punching US AMADA Ltd 26 Jan 1972 [19 Feb 1971] 15299/74 Divided out of 1,378,183 Heading B3W A punch press has an upper and a lower turret 20, 22 each of which has multiple, radially spaced tracks A-C as shown, for mounting tools 23, 25. The eccentrically driven ram 32 actuates a punch striker 44 mounted for vertical reciprocation in a holder 42 which is movable radially of the turrets by a piston and cylinder device 48. In the ram 32 are recesses 34 aligned respectively with the tool tracks and with apertures 36 in a hard plate 35 backing up a shear plate 35. If an overload is applied to the punch the head of the striker punches a slug from the shear plate and pushes it through an aperture 36 into a recess 34.
Patent GB-581253-A (GB)
Title: Improvements in or relating to bee feeding appliances
IPC: A01K53/00
Filed: 1944-08-11
Abstract: 581,253. Bee-feeding appliances. UNIVERSAL PLASTICS, Ltd., and JOHNSTON, J. Aug. 11, 1944, No. 15310. [Class 5 (ii)] A bee-feeding appliance comprises a container A with an open-ended tubular member A<SP>1</SP> extending vertically from an aperture in the base and having steps, ridges or Other projections to enable the bees to climb the walls. The bore of the member A<SP>1</SP> increases in diameter step by step from the base while the outer surface decreases. Radially projecting ribs A<SP>2</SP> with shoulders A<SP>3</SP> support and position an inverted glass or like jar B. The container may be of moulded thermo-setting material, or of ceramic material, or of metal or glass.
Patent GB-457767-A (GB)
Title: Improvements in means for detachably attaching metal plates or other similar flat sectional members together or to other members
IPC: F16B35/02
Filed: 1935-05-27
Abstract: 457,767. Bolts. MANNING, F. A., Kismet, Poynders Road, Clapham Park, London. May 27, 1935, Nos. 15390/35 and 10260/36. [Class 89 (i)] [See also Group XIV] Flat sheets, such as metal plates or wooden or asbestos sheets, are connected edge to side or edge to edge by fastening devices each of which is split or cut away for the whole or part of its length on each side of a plane containing its axis so as to leave one or more portions and thus form a slot or recess g<1>, Fig. 2, in or between the part or parts. This slot or recess receives a part of one of the sheets c, Fig. 3, and the fastening device projects through a hole in the other sheet a and is secured by means such as a nut g<3>. The fastening device may consist of a threaded bolt with the centre part cut out and having two nuts g<2>, g<3> Figs. 2 and 3, or a head g<4> and washer g<5>, Fig. 4. The nut g<2> or the head and washer are located in a hole c<1> in the sheet c. In another form, a bolt h<1>, Fig. 7, is cut away for a portion of its length to form a recess h<2>, leaving a part h<3> which is slightly undercut and is received in a hole in the plate c. The threaded part h passes through a hole in the sheet a and receives the nut i. Fig. 8 shows a further form of split bolt fastening in which extensions j<4>, j<5> offset to fit together, are formed at the head end. The gap formed between the screwed parts j, j<1> is increased in width towards the outer end so that as the nut is screwed towards this end the head ends may be opened out to receive the edge part of the sheet c without removing the nut completely. A form of fastening device for joining plates edge to edge comprises two members having screwed parts n, n<1>, Fig. 12, and lateral extensions n<4>, n<5> respectively, the two members fitting together to leave a slot between the parts n<4>, n<5> within which the edge parts of the plates l, m, Fig. 10, are received. Interfitting lugs n<6>, n<7> on the extensions n4, n5, pass through a hole in one plate, while the split parts of the shank pass through the hole in the other plate, and a nut o secures the two parts of the device together. The spaces between the extensions may be increased by the pitch of the screw thread, or a multiple thereof by altering longitudinally the position of one part of the split shank relatively to the other.
Patent GB-300703-A (GB)
Title: Improvements in the destructive hydrogenation of carbonaceous materials
IPC: C10G1/08
Filed: 1927-08-11
Abstract: 300,703. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Aug. 11, 1927. Divided on 276,001 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 12, 1927. Hydrogenation, destructive.-The destructive hydrogenation of carbonaceous materials is carried out in the presence of a catalyst containing 10 per cent of a mixture of copper and zinc or copper and cadmium the remainder being made up of one more of the elements boron, aluminium, silicon, titanium, vanadium, tantalum, chromium, molybdenum, tungsten or their compounds or compounds of cobalt. Large excess of hydrogen or hydrogenating gases is used preferably in a circulating system. Crude oil mixed with Florida earth is heated with hydrogen whilst stirring under a pressure of 200 atmospheres and at 420‹ C. and the vapours produced are led over a catalyst consisting of silica acid with 10 per cent of a mixture containing about 30 per cent copper and 70 per cent zinc. A product is obtained containing 70-80 per cent benzine. Specifications 258,272 and 268,774 are referred to.
Patent GB-701012-A (GB)
Title: Improvements in or relating to arrangements for predicting the value of electrical signals
IPC: H04N7/12
Filed: 1951-06-29
Abstract: 701,012. Television. WESTERN ELECTRIC CO., Inc. June 29, 1951 [June 29, 1950], No. 15479/51. Class 40 (3). [Also in Group XL(c)] Relates to arrangements for predicting the values of successive samples of message signals for use in a signal transmission system such as that described in Specification 701,011. These arrangements comprise one or more tapped electrical delay lines provided for deriving from each a plurality of signal samples preceding a sample at its input, and may also comprise acoustic delay lines for separating derived samples, for example by a line period in television systems, and storage tube delays for separating derived samples by a frame period. The derived preceding signal samples are combined, in selected polarity and suitably weighted, to predict the value of each successive message signal sample. The electrical delay line predictor is fed from the message wave sampler 100, Fig. 1, and amplifier 12, the delay line 13 being tapped at points 21 ... 29 separated by the sampling period or a multiple thereof, so that the selected preceding samples appear simultaneously thereat. The outputs are weighted by variable attenuators 31 ... 39 and connected by switches 41 ... 49 either to conductor 16 or 17. These conductors are connected to a differential amplifier 14 so that an input on 16 produces a positive output, and on 17 a negative. The predicted output on conductor 18 is related to the sample pulse at the input of line 13, so that if this point is connected over conductor 19 to the appropriate input of amplifier 14, the output thereof is the error in prediction as required by the signal transmission system previously referred to. When the input signal is a television picture signal, several electrical delay lines 50, 60, 70, 80, 90, &c., Fig. 2, provide previous pictures samples in the neighbourhood of the sample to be predicted. To accomplish this they are separated by acoustic delays 55, 65, 85, &c., producing a delay of one line period and storage tube delays such as 75 producing a delay of one frame period. The previous samples are weighted and combined as in Fig. 1. The storage tube delay comprises a binary coder, followed by plurality of binary digit storage tubes of the type described in Specification 701,010, [Group XL (c)], and controlled by the television frame sync. signal, which feed a decoder, Fig. 3 (not shown).
Patent GB-975026-A (GB)
Title: Motor-driven cont
Inventor: HORSTMANN FREDERICK OTTO
IPC: H01H19/62
Filed: 1962-05-24
Abstract: 975,026. Cam-operated switches; controllers. HORSTMANN GEAR CO. Ltd. April 23, 1963 [April 24, 1962], No. 15507/62. Heading H2B. A rotatable cam-shaft has a pair of rotationally offset cams for each pair of co-operating contact springs, e.g. cam 74 is engaged by a spring 64 and cam 76 is engaged by a spring 67, and the cam profiles are such that contacts 66, 82, on the overlapping springs 64, 67, make and break with a snap-action as the cams are rotated by a synchronous motor (not shown). External contacts (not shown) in the motor circuit are operated to start the motor and rotate the cam-shaft, and the camshaft operates auxiliary cams 95, 97, to make and break contacts 99, 100, 101 in the motor circuit to switch off the motor when the required actuation of contact springs has occurred (see also Fig. 8, not 'shown). A further cam 98 operates an " ON-OFF " indicator flag. Each pair of contact springs has its own subcompartment insulatingly partitioned from the other compartments. Insulating ridges such as 68 and 48 separate all terminals, and insulating discs 77, 80 are provided on the cam-shaft. Separate cores 33, 39<SP>1</SP> for the cam-shaft compartment and motor compartment are provided an an outer cover and terminal cover complete the apparatus (Fig. 1, not shown), the terminal cover having weakened portions for the entry of cables to the terminals from a threephase motor or other device.