baber/WOPTO huggingface dataset:
Patent GB-1114885-A (GB)
Title: Preparing aldehydic carboxylic acids and esters thereof
Inventor: CHARMAN HUGH BERNARD
IPC: C07C51/31
Filed: 1966-05-23
Abstract: Open chain compounds having terminal aldehyde and -COOR groups in which R is an alkyl group or hydrogen are prepared by contacting oxygen or an oxygen containing gas with a solution of (a) a cyclic ketone having at most 12 carbon atoms and (b) copper ions and chloride, bromide and/or fluoride ions in a substantial quantity of a saturated alcohol having at most four carbon atoms and/or water.  To increase the rate of reaction 1-30% by weight, of the water and/or alcohol mixture, of an aliphatic carboxylic acid having, if it is a monocarboxylic acid 1-5 carbon atoms or if it is a dicarboxylic acid 2-6 carbon atoms may be present. Alternatively an amine which is stable to oxidation under the process conditions and is miscible with the water and/or alcohol may be present in the proportion 1-400% by weight of the water and/or alcohol.  In the examples mixtures of adipaldehydic, glutaraldehydic, adipic and glutaric acids were obtained using cyclohexanone as the starting material.  The 2,4-dinitrophenylhydrazone derivatives were also prepared.
Patent GB-829597-A (GB)
Title: Improvements in or relating to variable resistors or potentiometers
IPC: H01C10/32
Filed: 1957-07-19
Abstract: 829,597. Variable resistors; couplings between relatively movable conducting parts. EGEN ELECTRIC Ltd., and BOWMAN, A. July 21, 1958 [July 19, 1957], No. 22870/57. Classes 37 and 38 (1). In a variable resistor or potentiometer a resilient wire contact is in the form of a ring shaped to make wiping engagement with a collector, a small portion of the ring being deformed to protrude through an opening in a rotatable annular insulator so as to make contact with the arcuate resistance element, the remainder of the ring being shielded from the resistance element by the insulator. The Specification describes a potentiometer in which part B of a spring wire contact A protrudes through a hole K in the annular insulator D. The contact A is formed from beryllium-copper or phosphor-bronze and is shaped so that the section B makes contact with a carbon resistive track R carried by an insulating disc O. The wire ring A is bent across the diameter at C so that these points make contact with the nickel-silver collector ring V carried on an insulating disc P. The two discs O, P are supported on a moulded insulating boss L by a hollow rivet M and two washers N. The boss L forms a bearing for the annular insulator D, which is flanged at E so as to provide an edge-operated finger control. Terminal posts S secured near the ends of the arcuate track R also provide end stops. The potentiometer may be mounted by means of a screw through the hollow rivet M with the operating flange E projecting through a slot in the panel.
Patent GB-615284-A (GB)
Title: Built-up laminar-flow aerofoil
IPC: B64C3/00
Filed: 1946-08-01
Abstract: 615,284. Aerofoils. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., SIR W. G., WOODHAMS, H. M., and LOCKWOOD, S. W. D. Aug. 1, 1946, Nos. 22904/46 and 16741/47. [Class 4] An aerofoil has at least the main portion of its air-swept surface formed of panels, of appropriate curvature, having inwardly projecting marginal flanges rigidly connected together by bolts, each of the panels being machined from a bar or plate of sufficient thickness for the formation of the marginal flanges. In the form shown in Fig. 1, upper and lower panels 21, 22 of light alloy are secured to spars 30, 31 and stiffeners 32 by bolts passing through spanwise flanges 25 and chordwise flanges 24 respectively. As shown in Fig. 3, the peripheral edges of the spars and stiffeners extend to the exterior surface of the aerofoil; alternatively, they may be recessed into the marginal flanges which are arranged to abut each other. The marginal flanges are stayed by triangular gussets 26, and the panels may also be provided with chordwise-extending reinforcing ridges between the flanges 24, also provided with similar gussets. The leading- edge portion 23 of the aerofoil is bolted to the spar 30, and the trailing-edge portion to the spar 31. Fig. 8 shows an alternative method of securing the leading-edge portion 37 in a recess 36 along the edge of the flange 25 to provide a flush joint. Such an arrangement may be used for attaching the trailing-edge portion, or for flush fitting access plates. The exterior surfaces of the panels are machined to the desired profile. Specification 615,275 is referred to in the first Provisional Specification.
Patent GB-646718-A (GB)
Title: Felt hardening machine
IPC: A42C1/02
Filed: 1947-08-18
Abstract: 646,718. Felt. MERRIMAC HAT CORPORATION. Aug. 18, 1947, No. 22910. Convention date, Sept. 11, 1946. [Class 42 (ii)] [Also in Group VII] A machine for hardening hat bodies and other hollow felt shapes comprises a hollow, perforated form 22 with a roughened outer surface on which the body B is supported and a flexible belt 24 with a roughened surface which is reciprocated endwise in contact with the body while steam is supplied through the form. The belt extends over the tip of the body and engages segments of about 60 degrees angular extent at opposite sides of the body. The form is rotated manually at intervals, while the belt is lifted from contact with the body, so as to present successive segments of the body to the belt, and can be lowered and tilted to facilitate loading and unloading. The form B is carried rotatably on a carriage 138 which can be tilted on trunnions 140 and can fall vertically under the weight of the form, or be held in raised, operative position by a treadle 150 and catch. The form is rotatable by a ring rack 122 and hand wheel 124, Fig. 4 and is divided internally by partitions 172 which define a chamber within the tip and six lower chambers each of 60 degrees angular extent. The various chambers are separately supplied with steam by compartments 168, 178 in the carriage 138 fed by pipes passing through the trunnions 140. The supply of steam is cut off automatically when the form is lowered to inoperative position. The belt 24 is secured, at opposite sides of the form, to plates 26 which are curved as shown in Fig. 4 and are connected by links 28, 30 to rods 34 slidable in guideways on plates 40. The rods 34 are connected by links 46 to the ends of a bar 52 which is rocked on a pin 54 by means of a crank linkage 62, 64 so as to reciprocate the belt. The pivot pin 54 is carried by blocks 56 which are movable vertically in fixed guides 58 so that the belt assembly can be lifted from the form at intervals to allow the form to be rotated. To this end, the plates 40 are supported by pins 72, 78 engaged in curved slots 74, 80 in fixed members 76, 82, the pins 78 being connected to links 84 connected to the blocks 56 and the pins 72 being engaged by the slotted ends of levers 88 which are connected by links 90, rocking levers 92 and suitable belt-crank levers and cords to a pair of treadles 84a, 86. Operation of one treadle raises the levers 92 so that the plates 40 and with them the plates 26 and belt 24, are moved to the position shown in dotted lines in Fig. 1. At this time, the form is rotated through an angle of 60 degrees. Operation of the second treadle then re-engages the belt with the hat body. When the entire surface, including the tip, of the body has been hardened, the treadle 150 is released and the form descends and can be tilted forwardly for removal of the body.
Patent GB-726150-A (GB)
Title: Improvements in or relating to venetian blinds
IPC: E06B9/308
Filed: 1953-08-19
Abstract: 726,150. Venetian blinds. ROLLADENFABRIK A. GRIESSER AKT.-GES. Aug. 19, 1953 [Feb. 21, 1953], No. 22911/53. Class 20 (3).  In a Venetian blind of the kind having laths 9 carried by ladder tapes 8 suspended from tilting frames 7 coaxial with and rotatable independently of the winding shaft 2, a lifting drum 13 on the shaft 2 and a lifting tape 12 attached to the lowermost lath, rotation of the tilting frame 7 is brought about by the engagement of one or other-of pawls 21 with a rigidly mounted ratchet wheel 22. When, on turning the shaft 2 to raise or lower the blind a plate 19 integrally attached to the tilting frame 7 reaches either of two positions, a pawl 21 is tripped out of engagement with the ratchet wheel 22 by an abutment 23 and no further tilting can occur. Each of the sleeve portions extending from the sides of frame 7 is squared and carries a disc 14, a flat portion 15 of which rests on a ledge 16 when the laths are in the position shown in Fig. 2. Yokes 18 prevent the shaft from jumping out of its bearings in the plates 17. The blind is operated by a drawtape 4, wound on drum 3, the end of which is attached to a clamping device 25 which consists of a bottomless outer case 26 and a threesided member 27 pivoted at 28, of which the outer end is pressed by spring 29 to clamp tape 4 between it and a rubber strip 31. If the tape 4 is released by pulling member 27 downwards the blind tilts and descends as shown in Fig. 2 under its own weight. If the tape 4 is unwound from the drum 3, the laths tilt in the other direction before the blind begins to rise. When the blind is in motion the upper pawl 21 jumps the ratchet wheel 22. Stops 39 on the frame 17 and 38 may be provided in a modification in which spring pawls 35 in a plate 33 engage holes 37 in a ratchet wheel 36. The first pawl 35 in the direction of rotation is tripped out of engagement by a member 32. An alternative to the discs 14 and ledges 16 comprises a disc with a notch which engages a roller carried on a spring arm. The lower part of the surface 6 to which the ladder tapes 8 are attached by e.g. a spring clamp is apertured extensively for the passage of lifting tape 12, of steel, preferably, or of a synthetic material. Laths 9 are held in bridges 11 fixed to the ladder tapes 8.
Patent GB-864990-A (GB)
Title: Improvements in or relating to tensile testing apparatus
IPC: G01N3/06
Filed: 1958-07-17
Abstract: 864,990. Tensile testing machines. TECQUIPMENT Ltd., and POPE, J. A. Oct. 5, 1959 [July 17, 1958], No. 22920/58. Class 106 (2). Tensile testing apparatus comprises a frame 3, 4 slidably mounted on a base 1 and holding a recording sheet 15, a pillar 12 on the base 1 and means 24 to move the frame 3, 4, to subject a specimen 11, gripped between the frame and the pillar 12, to a tensile stress and a marking point 17 carried by the pillar to make a record on the surface of the sheet 15. The test piece 11 is gripped by clamps 10, 13 and is stressed by turning a hand wheel 30, thus turning a wormwheel 22 to move a screw 21 axially. When tension is applied, the pillar 12 flexes slightly and so the marker 17, moving in unison with an arm 14 attached to the pillar 12, indicates the load applied. The recording sheet 15, which may comprise a sheet of smoked glass, is attached to the frame 3, 4, and moves to give an indication of the strain in the specimen. The recording sheet 15 is adjustable along the frame 3, 4 and the marker 17 which is carried by a pivoted arm 18 is angularly adjustable. To ensure that no bending stresses are set up in the specimen, the clamp 13 acts on the pillar 12 through a knife edge 28. If desired, projection apparatus (not shown) may be used to project an image of the record sheet 15 on to a screen.
Patent GB-1533672-A (GB)
Title: Cement composition
IPC: C04B35/66
Filed: 1976-06-04
Abstract: 1533672 Silica cement composition SOUTHWEST RESEARCH INSTITUTE 4 June 1976 [30 July 1975] 23130/76 Headings C1A and C1J Cement compositions consist of (I) (a) spray dried microspheres of hydrated sodium silicate powder with weight ratio of SiO 2 : Na 2 O of 2À4:1 to 3À22:1, and (b) K 2 SiF 6  and/or Na 2 SiF 6 ; (II) (a) spray-dried microspheres of hydrated potassium silicate powder having a wt. ratio of SiO 2  K 2 O in the range 2.4:1 to 3À22: 1, and (b) Na 2 SiF 6 . Siliceous fillers may be added to the formulation e.g. sand, silica flour, flyash, siliceous clays and other argillaceous minerals of high silica content.
Patent GB-242047-A (GB)
Title: Improvements relating to the manufacture of bobbins
IPC: B65H75/14
Filed: 1924-10-01
Abstract: 242,047. Wilson, W. B., and Wilson & Co. (Barnsley), Ltd. Oct. 1. 1924. Bobbins.-In bobbins having flanges made separate and fixed on the barrel, the ends of the barrel are tapered and shaped as shown, Fig. 1, and formed with slots or saw cuts a<3>. The flanges B are correspondingly shaped and pressed over the ends of the barrel. A plug C, Fig. 8, is then pressed into the end of the barrel to expand the slotted portion., and afterwards shaped at; shown. Glue or cement may be used to secure the various parts.
Patent GB-778054-A (GB)
Title: Improvements in or relating to electric accumulators
Inventor: PETERS FREIMUT
IPC: H01M50/42
Filed: 1954-08-11
Abstract: 778,054. Batteries. ACCUMULATORENFABRIK AKT.-GES. Aug. 11, 1954, No. 23170/52. Class 53. An accumulator having an alkaline electrolyte, e.g. potassium hydroxide, and a negative electrode consisting of a metal capable of forming an amphoteric hydroxide, e.g zinc, lead, tin, is provided with separators of hardened polyvinyl alcohol, the electrodes and separators being inserted in the cell container without being under compression so that they can expand freely, the electrolyte being retained in the electrodes and separators in such small quantity that the electrode materials do not dissolve during the discharge of the accumulator. The positive electrode may consist of copper oxide, and the polyvinyl alcohol of the separator may be mixed with polyacrylic acid derivatives or polyvinyl compounds. Carbonates or boric acid may be added to the electrolyte to reduce the solubility of the electrodes.
Patent GB-1264004-A (GB)
Title: Double current telegraph signal transmitter
Inventor: LONGWORTH ARNOLD
IPC: H04L25/24
Filed: 1969-05-07
Abstract: 1,264,004. Telegraphy; transistor switching circuits. CREED & CO. Ltd. 7 May, 1969, No. 23240/69. Headings H3T and H4P. In a circuit having two electronic switches serially connected across the positive and negative terminals of a power supply to generate double current signals in response to telegraph signals, it is arranged that only one switch can be conductive at any one time to prevent shortcircuiting the supply and to avoid the need for a current limiting resistor. Telegraph signals, Figs. 2A, 2B (not shown), at terminals 1 are passed in true and invert form from transistor 41 to gates 37, 38. Capacitors 35, 36 increase the rise time of the signals, Figs. 2E, 2F (not shown), fed to the gates so that one gate is rendered non-conductive prior to the other being rendered conductive. Pulses from oscillator 17 pass via the conductive gate 37 or 38 and transformer 12 or 15, and are rectified at 13, 16, the resulting signals controlling transistor switches 34 connected across the supply terminals 8, 9.
Patent GB-796002-A (GB)
Title: Detachable tire sidewall
IPC: B60C13/00
Filed: 1956-07-27
Abstract: 796,002. Pneumatic tyres. GOODYEAR TIRE & RUBBER CO. July 27, 1956 [Oct. 27, 1955], No. 23254/56. Class 144 (2). A detachable sidewall 10 to be applied to a pneumatic tyre 16 mounted on a wheel rim 13 is of coloured resilient material in the form of an annular body 17 moulded to conform with the contour of the tyre side 19 and has a radial inner peripheral skirt 20 to be clamped between the tyre bead 15 and the rim flange 14, the skirt 20 having a series of circumferentially spaced holes or recesses 21 along its medial line to permit bulging of the tyre bead surface thereinto, Fig. 2, to enhance the anchorage of the detachable sidewall against the action of centrifugal force. As shown, the skirt 20 is thinner than the body 17 and the holes 21 have a radial width of about one-third that of the skirt 20. The angular spacing of the holes may be from 10 to 30 degrees and where blind holes 21, Fig. 6, are used they extend from the bead-engaging face of the skirt to a depth of at least 20 per cent of the skirt thickness. U.S.A. Specifications 2,621,979 and 2,696,409 are referred to.
Patent GB-277035-A (GB)
Title: Improvements in valves and valve gear for internal combustion engines
IPC: F01L5/10
Filed: 1926-10-04
Abstract: 277,035. Haltenberger, J. Jan. 9, 1926, [Convention date]. Valve gear; regulating.-Sleeve valves 17 are given a combined oscillating and reciprocating movement by a valve shaft 20 formed with inclined or wobble cranks 21, which are connected by rods 22 to levers 25 fulcrumed at 30 and connected at 28 to the valves. The connections 24, 28, and 30 are ball joints, and the lever 25 slides through the ball 28. In a modification, the shaft 20 is arranged above the lever 25. Adjustment of the fulcrum of the lever 25, either for setting the valve or regulating the timing, is effected as described in Specification 264,132, by a pair of eccentric members 35, 37, or by a single eccentricmounting.
Patent GB-635479-A (GB)
Title: Improvements in and relating to magnetrons
IPC: H01J25/587
Filed: 1945-09-10
Abstract: 635,479. Magnetrons. BRITISH THOMSONHOUSTON CO., Ltd. Sept. 10, 1945, No. 23332. Convention date, June 22, 1942. [Class 39 (i)] A multi-resonator magnetron comprises a pair of pole-pieces 40, 41, Fig. 1, preferably permanently magnetized, located within a ferromagnetic container, e.g. of cold rolled steel, which serves as a low reluctance return path for the magnetic flux. In a modification, Fig. 6, the arrangement is unsymmetrical, 150 being a permanently-magnetized pole-piece and 162 a multi-cavity anode of ferromagnetic material which is magnetized by induction by the polepiece 150. The envelope is closed by headers 11, 12 and has cooling fins 14 of which 15 serves as a mounting flange. The pole-pieces 40, 41 are secured to discs 48, 49 based on the headers 11, 12 by clamping rings 51, 52 and are supported and spaced from the anode by discs 56, 57 and rings 54, 55. The cathode leads pass through a central aperture in pole-piece 40, and an exhaust tubulation 85 is attached to the other pole-piece 41 over a central aperture therein. The multi-cavity anode has small channels cut in the periphery thereof to receive rings of brazing material and a large channel 29 to reduce the weight. The indirectly-heated cathode has a flanged sleeve 32 closed at either end by discs 36, 37 and is positioned by insulating beads 62, 63, and the cathode leads 37<1>, 371 are positioned by insulators 76, 77. A centring stud 68 projecting from disc 36 is received in bead 63. The cathode leads 37<1>, 37<1> are secured to heavy leads 79, 80 sealed through metal eyelet 82 by glass body 81. The polepieces 40, 41 may be of an alloy of aluminium, nickel and cobalt such as those described in Specifications 423,897 and 424,746, [both in Group II], or of an alloy of iron, nickel, and titanium. The surfaces of the pole-pieces adjacent to the interelectrode space are finished by grinding and are then copper-plated to reduce high-frequency losses. Slots 49<1> in members 48, 49, holes 90 in discs 56, 57, and hole 92 in anode 20 allow all the parts of the device to be evacuated during manufacture. Energy is extracted by coupling loop 100 and tapered transmission line 107, 110 hermetically sealed by glass bead 112. In a slight modification, Fig. 5 (not shown), the cathode is grounded to the envelope and the anode is insulated therefrom. In the embodiment of Fig. 6, a supporting and spacing ring 154 is provided for pole-piece 150 and the cathode 157 is insulated from pole-piece 150 by member 158. The anode 162 is of iron or steel and is coated with copper. It has four radially-extending tubular channels 165 communicating with the space above the anode by slots 166 and also with a central opening (not shown) in the anode. The channels 165 serve as resonators. The Specification as open to inspection under Sect. 91 suggests that the anode structure of Fig. 6 may be permanently magnetized. This subject-matter does not appear in the Specification as accepted.
Patent GB-707854-A (GB)
Title: Improvements in and relating to mattresses
Inventor: FRENCH DOUGLAS YALDEN
IPC: A47C27/22
Filed: 1952-09-17
Abstract: 707,854. Mattresses. MULTI-SPRING, Ltd. Jan. 6, 1953 [Sept. 17, 1952], No. 23338/52. Class 52(4) A foamed or sponge rubber overlay mattress A is covered with layers of cotton linters D arranged between an upper ticking E and a bottom layer of muslin B, preferably with a crepe paper backing C, the respective layers being connected by stitching F in the manner of quilting.
Patent GB-827866-A (GB)
Title: Electrical conductors
Inventor: MARSH ANTHONY CARYSFORT
IPC: H01B11/18
Filed: 1956-07-27
Abstract: 827,866. Conductors. TELEGRAPH CONSTRUCTION & MAINTENANCE CO. Ltd. July 17, 1957 [July 27, 1956], No. 23339/56. Class 36. In a high-frequency coaxial cable with an outer conductor having a lower conductivity than copper, the central conductor is of composite construction and combines a conductivity at least equal to that of copper with a coefficient of expansion substantially equal to that of the outer conductor. The inner conductor may comprise a core of the same metal as the outer conductor (e.g. aluminium) which is enclosed in a metal layer of good conductivity (e.g. copper, silver or silver-coated copper).
Patent GB-696045-A (GB)
Title: A device for burning oil
IPC: F23D5/00
Filed: 1951-10-09
Abstract: 696,045. Oil burners. KEMP, G. C. Oct. 9, 1951, No. 23434/51. Class 75(i) In an oil burner a plurality of uniformly spaced primary air jets 19a and secondary air jets 20, arranged in advance of the primary jets, overlie, so as to direct downwardly air on to, a downwardly and rearwardly sloping vaporizing and mixing chamber base 13 to which fuel is supplied to the rear thereof and over which gases and vapours, pass horizontally to a mouth 12 at the front thereof. Fuel is supplied to the burner through a pipe 17 on to a horizontal portion 15 of the base 13 provided with two ridges 19 which guide the incoming oil to control the distribution of the vaporized gases in a chamber 11. Air forced through a pipe 22 by a motor-driven fan is evenly distributed by means of baffles 23 24 to the primary and secondary air jet holes 19a and 20 in a plate 18. The sloping portion 14 of the base 13 is extended beyond the burner mouth 12.
Patent GB-686102-A (GB)
Title: Improvements in or relating to pumps
Inventor: CLARKE DENIS ARTHUR
IPC: F04D9/00
Filed: 1949-09-09
Abstract: 686,102. Centrifugal separators. SELFPRIMING PUMP & ENGINEERING CO., Ltd. Oct. 26, 1950 [Sept. 9, 1949], No. 23437/49. Class 23 [Also in Group XXVI] A pump for highly volatile liquids or liquids containing occluded gas, as shown a submersible pump for the fuel tank of an aircraft, comprises a centrifugal impeller 17 rotatable in a horizontal plane, and a centrifugal separator for separating gas from the liquid about to enter the impeller, the separator being in the form of a chamber beneath the impeller and having a central inlet aperture 18 in the bottom, an outlet 7 for gas at the top and provided with internal blades 15, the blades and at least part of the chamber being rotatable. The impeller has an inlet eye 4 in the form of a downwardly directed annulus closed at the top, the inner wall of the annulus surrounding the gas outlet' and the outer wall 13 forming a continuation of the chamber, whereby the separated gas passes upwardly through the outlet within the eye. The chamber is bounded by a sleeve 12, to the interior of which the blades 15 are attached. Each of the latter tapers from a minimum width at the bottom to a maximum width at the entrance to the eye, and abuts and merges at 16 with an impeller blade. The aperture 18 is sharp edged and is formed in a fixed plate 14. The gas is discharged into a funnel 9. The gas outlet is constituted by the openings between three arms which connect the inner wall of the annlus to a driving shaft 10 coupled to an electric motor 2. The arms may be shaped to serve as an extractor fan. It is stated that the shaft may be hollow to serve as a chimney for assisting extraction of the gas, and may be provided internally with an extractor fan.