baber/WOPTO huggingface dataset:
Patent GB-992057-A (GB)
Title: Improvements in and relating to hydraulic pumps
Inventor: LIDDALL JACK ANTHONY
IPC: F04B9/14
Filed: 1960-09-23
Abstract: 992,057. Hydraulic reciprocating pumps. YORK TRAILER CO. Ltd. Sept. 21, 1961 [Sept. 23, 1960], No. 32866/60. Heading F1A. A manually operated hydraulic pump comprises two pistons 12 connected to a single operating lever 17 which is pivoted about a vertical pivot 22 on a lever 18 pivoted about a horizontal axis 20, whereby setting of the handle 17 by turning it about the axis 22 from a mid position determines different strokes of the two pistons when the handle is oscillated about its pump axis 20. As the handle 17 is moved from its mid position about the axis 22, e.g. to the dotted line position in Fig. 1, the connection 16 of one piston to the crosshead 14 of the lever moves towards the pumping axis 20 reducing the piston stroke, whilst that of the other piston moves away from the axis 20, increasing the piston stroke. The pistons are formed as differential pistons with high pressure portions 12b and low pressure portions 12a, each portion having a separate suction valve 35, 37, and delivering to a common outlet 43 through delivery valves 44, 46. During low pressure operation both pump spurs are operative. For high pressure operation, the suction valves 35 are held open by rods 45, Fig. 6, actuated by a manually operated cam 40 whereby the pump 12a is rendered inoperative. To release pressure from the hydraulic system, the suction valves 36 are opened by a knob similar to 40, and the delivery valves 46 are held open by projections 50 on the pistons when they are operated on a full stroke.
Patent GB-1369941-A (GB)
Title: Drilling machines
IPC: E21B3/02
Filed: 1972-07-13
Abstract: 1369941 Boring earth &c ROBBINS CO 13 July 1972 [15 July 1971] 32879/72 Heading E1F In a drill having guide columns 18, a frame 22 movable up and down the columns, a motor 38 rotating a member 88, a rotary head 92, 110 having portion 110 connected to a drill pipe 122, and a driving connection 90, 91 between the member 88 and the head, the head is mounted on the frame in bearings 94, 96 permitting limited tilting movement of the head and the driving connection does not transfer this movement to the member 88. The portion 110 is axially movable in the portion 92 on splines 116, and the connection 90, 91 is formed by splines. The frame is moved by cylinders 42 which move on rods 44 fixed to a base 12. The cylinders are connected by a plate 52 and a swivel mounted below the plate supplies drilling fluid to a tube 124. The weight of the drill stem 122 and the portion 110 is balanced by the apparatus disclosed in Specification 1362554.
Patent GB-211977-A (GB)
Title: Improvements relating to the boilers of hot water installations
IPC: F24H1/40
Filed: 1922-12-02
Abstract: 211,977. Mycock, W. Dec. 2, 1922. Boilers.-Apparatus for heating buildings comprises a closed hot-water circulating system, a main heating chamber to the top of which the flow pipe is connected, a preheating chamber, to which the return pipe is connected, in the path of the products of combustion, and a pipe connection between the preheating chamber and the bottom of the main heating chamber so that the cooled water returning from the system is preheated before passing into the main heating chamber. The return pipe D, Fig. 1, is connected to a pipe c' having offset compartments c contained in a rectangular casing E and shaped to allow a sinuous passage for the combustion gases. A pipe D', passing outside the casing and upwards through the burner G, connects the pipe c<1> with the main heating chamber A to the top of which is connected the flow pipe B. In the form shown in Fig. 3 the preheating chamber c is a hollow flat spiral and is arranged round the flow pipe B which passes up the centre of the cylindrical casing. Alternatively, a number of spiral pipes or pipes arranged in zigzag fashion may be used for preheating.
Patent GB-254984-A (GB)
Title: Band-clips
IPC: F16B2/06
Filed: 1925-12-31
Abstract: 254,984. Stevenson, D., and Mackay, G. D. Dec. 31, 1925. Clips, band. - A band clip for holding together two or more circular columns or shafts is made from a metal strip notched at the sides where the parts of the strip cross when wrapped round the columns in the form of a figure 8. The notches A are flat bottomed and of a depth equal to half the width of the strip, one side being cut obliquely. The fastener is secured by a bolt through the holes C at each end.
Patent GB-321821-A (GB)
Title: Improvements in or relating to apparatus for measuring depths at sea
IPC: G01C13/00
Filed: 1928-11-12
Abstract: 321,821. Gillie, J. W. Nov. 12, 1928. Sounding-apparatus -In apparatus of the pressure type in which water is collected in a measuring tube A enclosed within a guard tube B, a baffling disc is mounted within the guard tube to prevent overflow of water from the measuring tube during withdrawal of the apparatus from the water. Two superposed plugs I), E having central apertures communicating with the tube A are fixed within the upper end of the tube B and enclose between them a chamber in which is freely mounted the baffling disc F. Any outflow of water from the tube A forces the disc against the hole in the plug D and the water is thus prevented from escaping. The upper surface of the disc and the coacting surface of the plug D are flat and smooth; the lower surface of the disc is, however, roughened so that it cannot block the hole in the plug E. Grooves are formed in the circumferences of the plugs to allow water to pass to the tube A. The upper end of the tube B is hermetically sealed by a plug C and the upper end of the tube A is secured in a recess in the plug E.
Patent GB-618637-A (GB)
Title: Current transformer with two-part magnetic core
IPC: H01F38/28
Filed: 1946-11-06
Abstract: 618,637. Transformers. AKT.-GES. BROWN, BOVERI, & CIE. Nov. 6, 1946, No. 33008. Convention date, Nov. 8, 1945. [Class 38 (ii)] A current transformer has a core of two parts which may be of different cross-sections, with a premagnetization winding e supplied from the secon-' dary of an auxiliary transformer f, the primary of which is energized solely from the secondary winding c of the main transformer. The transformer has a single primary conductor b and supplies a load d which is in series with the primary of the auxiliary transformer f, the core of which has a saturable characteristic which may be produced by a tertiary winding connected to a resistance, the value of which varies with voltage, Fig. 2 (not shown). It is stated that with this arrangement the transformation ratio errors are reduced over the working range.
Patent GB-862888-A (GB)
Title: Improvements in or relating to a gas separating plant comprising a heat regenerator
Inventor: MINKHORST JAN HENDRIK
IPC: F02G1/057
Filed: 1959-09-29
Abstract: 862,888. Thermal regenerators. WERKSPOOR N.V. Sept. 29, 1959, No. 33017/59. Class 64(1) [Also in Group XXVIII] In a thermal regenerator forming part of a gas separating plant and comprising a casing 24 (Fig. 2), having ports 26, 28 in its end walls for the alternate admission and discharge of the heat exchanging gases (e.g. air and nitrogen), transverse perforated conical portions 29, 30, extend within the casing and constitute the end walls of an intermediate chamber which contains a quantity of particulate heat transfer material the intermediate chamber being divided into inner and outer sections by a partition 32 which may be perforated and which is spaced from the conical walls by a space sufficient to permit passage of the particulate material from one section to the other, the arrangement being such that alternate reversals of gas flow through the regenerator cause the particles to slowly circulate between the sections thereby preventing the regenerator from being choked with solid carbon dioxide which tends to be deposited on the particles located in a colder zone of the regenerative mass and is evaporated when the particles move into a warmer zone.
Patent GB-1042501-A (GB)
Title: Improvements in or relating to gas turbine installations
Inventor: CRAIG HUGH ROBERT MORTON
IPC: F02C6/16
Filed: 1961-09-14
Abstract: 1,042,501. Gas turbine plant axial-flow compressors. RICHARDSONS, WESTGARTH & CO. Ltd. Sept. 14, 1962 [Sept. 14, 1961], No. 33021/61. Headings F1C, FIG and FIT. In a gas turbine installation the inlet side of the turbine is connected to a storage reservoir for compressed air through one or more compressors having an overall pressure ratio which is substantially less than that of the turbine. When generating electricity an alternator and motor 12 is driven by a gas turbine 10 having oil-fired combustion chambers 60 within its casing and being supplied with compressed air from a storage chamber, such as an underground cavern 26. The air is supplied through a pair of parallel connected booster compressors 20, 22 of axial-flow or centrifugal constant speed type. These compressors are controlled as by adjustable stator blades or a variable by-pass to compensate for the gradual fall in pressure in the cavern 26 and thereby supply air a substantially constant pressure to the turbine. Alternatively, the boost may be provided by a compressor driven by an auxiliary turbine which is connected in parallel with the main turbine and controlled by throttling its air supply. Compressors 16, 18, which are redundant during generation, are evacuated by an auxiliary motor-driven compressor 54 to reduce power losses. The installation can be started by supplying air to the turbine inlet from the cavern 26. During off-peak hours the alternator and motor 12 functions as a motor to re-charge the cavern with air compressed successively in compressors 16, 18, 22 provided with intercoolers 32, 35. The compressors 16, 18 may be integral with the intercooler 32, Fig. 2 (not shown). The compressor 20 and turbine 10, which are redundant during re-charging, are evacuated by an auxiliary compressor 46 to reduce power losses, the exhaust air from the turbine then passing through a by-pass 38 and intercooler 40 to the compressor 20. Alternatively, the compressor 20 and turbine 10 are connected to an auxiliary chamber evacuated during generation by the compressors 16, 18, or the compressor inlet and turbine outlet are opened to atmosphere and fuel is burned in combustion chambers 60. For part-load operation (about ¥ load) of the installation during generation, the compressors 16, 18 and 22 may supply some of the air to the turbine. A clutch or similar connection may exist between the turbine 10 and compressors 20, 22. When the storage chamber is out of use the compressors 16, 18 supply air to the turbine 10.
Patent GB-656119-A (GB)
Title: Improvements in or relating to spindle assemblies for film reels
IPC: G03B21/32
Filed: 1948-12-22
Abstract: 656,119. Film-winding apparatus. KODAK, Ltd. Dec. 22, 1948, No. 33054. Convention date, Dec. 26, 1947. [Class 97 (i)] An assembly for rotatably supporting a film reel comprises a rotatably mounted spindle having a portion for angularly locating one flange of the reel and a pair of abutments relatively axially adjustable to clamp the flange between them, the reel. locating portion and the abutment for engaging the inner surface of the clamped flange being relatively angularly adjustable and non-circular in shape so that the flange may be positioned on said portion when the latter and said abutment are in register and held against withdrawal when they are out of register. As shown, a dead shaft 14 is secured to the channel-shaped arm 11 and carries the tubular spindle 13 retained thereon by the screw 16 engaging the counterbored portion 17. The reel-supporting portion 22 is enlarged at the inner end into a squared portion 25 beyond which is a reduced portion 33 on which is journalled the pulley 34, the boss 38 of which is formed with a projecting portion 39, square like the portion 25. Three detent members 47, urged by springs 48, are housed in bores in the pulley 34. Secured to the end of the shaft 13 are two superposed discs 28, 29, the first having three arcuate slots through which the detent members 47 pass, the second being formed with recesses adjacent the ends of these slots, which recesses and slots cooperate with the detents to limit the relativeangular movement of pulley and spindle. At one end of this movement the squared portions 25, 39 are in register and the square hole in the reel flange 40 can be fitted thereon. The flange is thicker than the portion 39, so that if the reel and pulley 34 are pressed inwardly against the springs 48 they can be rotated relatively to the spindle 22 to put the squared portions 25, 39 out of register so that the flange is held between the squared portion 25 and the hub 38 by pressure of the springs 48. The knurled portion 24 assists the relative rotation of spindle and pulley.
Patent GB-461300-A (GB)
Title: Improvements relating to flower holders
IPC: A47G7/07
Filed: 1935-11-29
Abstract: 461,300. Flower holders. ABRAHAM, E. A. Nov. 29, 1935, No. 33108. [Class 128] A flower holder comprises a dome-shaped perforated member and a complementary flower-positioning member disposed therein and formed of open wire mesh or perforated sheet metal. The circular disc 6 of open wire mesh is supported on a wire ring 7 and the rim of the dome 5 is cut away at points 5b to allow circulation of water. In another construction, the disc 6 is replaced by a perforated zinc plate soldered to the ring 7 which supports also a dome - shaped open wire mesh positioning member canopied over the plate. The rim of the dome 5 may be protected by rubber. The dome may be made of synthetic resin, the base thereof being then weighted with lead.
Patent GB-1176958-A (GB)
Title: Improvements relating to Devices for Detoxicating and Silencing a Pulsating Flow of Gaseous Material
Inventor: OTT WALTER
IPC: F01N1/14
Filed: 1967-07-19
Abstract: 1,176,958. Exhaust silencers. W. OTT. July 19, 1967 [July 19, 1966], No.33116/67. Heading F1B. An exhaust silencing and treating device comprises a chamber 2 having a bellows inlet end 8, with tangential inlet pipe 1, connected by a curved wall portion 9, which is convex towards the axis 6, to a substantially cylindrical outlet 10. Treating materials such as air, oxygen or steam may be admitted through an inlet 12. In an opposed cylinder engine (17, Fig. 2, not shown) separate chambers (15, 16) are connected to the exhaust of the cylinders. The casing may be of iron and thermally insulated .
Patent GB-1507557-A (GB)
Title: Manufacture of self-extinguishing urethane group-containing polyisocyanurate foams
IPC: C08G18/09
Filed: 1975-08-08
Abstract: 1507557 Fire retardant polyisocyanurate foams BASF AG 8 Aug 1975 [9 Aug 1974] 33142/75 Heading C3R A fire retardant polyisocyanurate foam is prepared from a reaction mixture comprising a polyisocyanate, a trimerization catalyst, a blowing agent and a polyesterol derived from an aliphatic C4-12 dicarboxylic acid and a diol mixture comprising (1) a C2-18 aliphatic diol which may contain one or more ether groups and (2) a halogen-substituted aromatic diol where A is a halogen-substituted phenylene, naphthylene or diphenylene radical, R is a C1-4 hydroxyl-substituted aliphatic radical and R<1> is a C1-4 aliphatic radical. The examples describe preparing polyisocyanurate foams from polyesterols derived from adipic acid, ethylene glycol, propane-1,2-diol or diethylene glycol and N,N<1> - bis - (ethanol - 2) - diaminooctachlorodiphenyl, and a mixture of diisocyanatophenylmethanes and polyphenyl-polymethylene polyisocyanates.
Patent GB-282078-A (GB)
Title: Improvements relating to optical systems for use in photography
IPC: G02B13/08
Filed: 1927-12-08
Abstract: 282,078. Soc. Technique d'Optique et de photographie (S.T.O.P.), (Assignees of ChrÚtien, G.). Dec. 9, 1926, [Convention date]. Colour kinematography; stereoscopic kinematography; optical systems.- Sets of colour - record or stereoscopic images are assembled so as to occupy one normal image area on a kinematograph film by means of an optical system which distorts them so that one dimension is relatively reduced or increased; such images are projected by means of a similar optical system to produce normal images on the screen. The images may be reduced in width or in height. Fig. 5 shows a taking system comprising a divergent cylindrical lens L, a convergent cylindrical lens L', three objectives O cut so that their optical centres may be placed close together, colour screens R, B, V, and a film P. Fig. 6 shows a system for stereoscopic kinematography comprising two pairs of cylindrical lenses L, L<1> and prisms or pairs of reflectors M, M'. The cylindrical lenses are preferably of low power.
Patent GB-1346874-A (GB)
Title: Nematic aryl esters of aryl carboxylic acids and mixtures containing these esters
IPC: C09K9/02
Filed: 1972-07-12
Abstract: 1346874 Aryl esters of aromatic carboxylic acids MERCK PATENT GmbH 17 July 1972 [7 Aug 1971] 33267/72 Heading C2C [Also in Divisions C4 and H4] The invention comprises compounds of the formula wherein R 1  is a C 1  to C 7  straight-chain alkyl or alkoxy group or a C 2  to C 7  straight-chain alkanoyloxy group, R 2  is a C 1  to C 7  straight-chain alkyl or alkoxy group and n is 0, 1 or 2; provided that when n = 0, (a) the radicals R 1  and R 2  together contain at least 4 carbon atoms and (b) the radical R 1  is not capronyloxy if R 2  is an alkoxy group. They may be obtained by (a) reacting a phenol of the formula wherein p is 0, 1 or 2 or a corresponding phenolate, with an aromatic carboxylic acid of the formula wherein q is 0, 1 or 2, the sum of p + q being not more than 2, or with a reactive derivative of said acid, at a temperature of from - 50 to + 200 C.; or (b) reacting a phenol of the formula or a corresponding phenolate, with a C 2  to C 7  straight-chain aliphatic monocarboxylic acid or a reactive derivative thereof, at a temperature of from- 50 C, to + 200 C. Numerous specific compounds are specified and several examples are given for their preparation. They have useful nematic properties. 4 - Benzyloxycarbonyloxybenzoic acid 4<SP>1</SP>- (C 1  to C 7 )alkylphenyl esters are obtained by reacting 4-benzyloxycarbonyloxybenzoyl chloride with a potassium salt of a 4-(C 1  to C7)alkylphenol. 4 - Hydroxybenzoic acid 4<SP>1 </SP>- butylphenyl ester is obtained by hydrogenating 4-benzyloxycarbonyloxybenzoic acid 4<SP>1</SP>-butyphenyl ester in presence of Pd/C.
Patent GB-285051-A (GB)
Title: Improvements in shafts for golf clubs, polo sticks and the like
IPC: A63B53/12
Filed: 1927-12-09
Abstract: 285,051. American Fork & Hoe Co., (Assignees of Cowdery, R. H.). Feb. 10, 1927, [Convention date]. Shafts; billiards, cues for.-A method of forming a shaft for golf clubs, polo sticks, billiard cues and other sporting implements consists in applying compressive stresses to successively shorter lengths of a tube, whereby the tube is given a stepped formation and increases in thickness towards its smaller end. The shaft 14 is formed from a cylindrical tube 20 that is passed to decreasing extents through dies 5, Fig. 5, of decreasing diameters. The shaft extends during the process and the wall of the shaft thickens at the reduced head-end. The dies are rounded at their smallest diameter to form continuous curves in the wall of the shaft at the junctions 12 of the sections. The material of which the shaft is formed has the following percentage composition, viz.: carbon 0.28-0.35; manganese 0.4-0.6; phosphorus 0.04 maximum; sulphur 0.045 maximum; silicon 0.1-0.2; chromium 0.8-1.10; molybdenum 0.13-0.25; the balance of the composition being iron. The exterior surface of the finished shaft is electroplated with chromium. The head end of the shaft is wrapped with tape impregnated with glue before insertion into the hose 7 of the club head 6 and is held in place therein by a pin 9, screws 2 and wood plug 13.
Patent GB-1275998-A (GB)
Title: PROCESS FOR THE MANUFACTURE OF 14beta-HYDROXY-3-OXO-5alpha-CARD-20(22)-ENOLIDES
IPC: C07J19/00
Filed: 1969-07-02
Abstract: 1275998 Cardiovascular &c medicines FARBWERKE HOECHST AG 2 July 1969 [2 July 1968] 33464/69 Heading A5B [Also in Division C2] Pharmaceutical compositions comprise an optionally further substituted 14#-hydroxy-3- oxo-5α-card-20 (22)-enolide (e.g. uzarigenone) and a carrier. The active ingredients are said to possess inotropic, cardiovascular, diuretic and antispasmodic activities. Routes of administration are not specified.  Reference has been directed by the Comptroller to Specification 1175429
Patent GB-756227-A (GB)
Title: Improvements in or relating to electrical safety circuits
IPC: G05B11/01
Filed: 1953-12-04
Abstract: 756,227. Automatic fuel control systems. UNITED AIRCRAFT CORPORATION. Dec. 4, 1953 [Dec. 6, 1952], No. 33766/53. Drawings to Specification. Class 38 (4). Provision is made to ensure that a desired operating signal is produced upon failure of an electric amplifier, e.g. in a system for automatically controlling a turbine jet engine as in Specification 751,007 in which signals from a tachometer generator and from thermocouples responsive to tailpipe temperature are normally applied to a crossover network involving biased rectifiers so that either speed or tailpipe temperature is maintained constant by automatic control of the fuel.supply to the jet engine, which variable is selected by the crossover network to be maintained constant is determined by which signal is calling for the greatest reduction of fuel or which is calling for the least increase of fuel. A thermionic valve amplifier having synchronously chopped input and output which amplifies the D.C. output of the thermocouples is provided with negative feed-back which is delayed by a resistancecapacity network to counteract lag in the thermocouple response. The output impedance of this amplifier is arranged to form with a larger external resistance a potential divider across a source of negative voltage, the effect on the output of the amplifier normally being negligible but on failure of the amplifier, the consequent rise in output impedance produces a substantial negative signal which, being applied to the crossover network, permits a negative underspeed signal to increase fuel supply. Specifications 656,208 and 751,003, [Group XXVI], also are referred to.
Patent GB-979204-A (GB)
Title: Improvements in the production of ball-races
Inventor: KELSEY WILLIAM
IPC: A44C5/10
Filed: 1962-09-04
Abstract: 979,204. Sheet metal chains. GAY FRERES S.A. Aug. 23, 1963 [July 18, 1963], No. 33439/63. Addition to 888,789. Heading B8A. A bracelet or like chain of the form described in the parent Specification is modified by the provision of lugs 20 to 23 adjacent the main pivot arms 11, 12 of the folded rectangular metal frame constituting its alternate links. The flattened U-shape intermediate links 6 are hooked round the lugs 20 and 21 at one end and round the main pivot arm 11 of the next link at the other end, these intermediate links thus being offset, longitudinally of the chain, from the symmetrical arrangement of the parent Specification. This arrangement allows each of the intermediate links to pivot with respect to only one of the alternate links to which it is coupled, being effectively rigid with the other. The spare pairs of lugs 22, 23 allow for the opposite offset to that shown. The pairs of lugs may be replaced by auxiliary arms parallel to the main pivot arms 11 and 12.