baber/WOPTO huggingface dataset:
Patent GB-764498-A (GB)
Title: Improvements in coal mining devices
IPC: E21C35/14
Filed: 1954-06-02
Abstract: 764,498. Endless belt face conveyers. DEUTSCHE KOHLENBERGBAU - LEITUNG. June 2, 1954 [June 3, 1953], No. 16317/54. Class 78 (1). [Also in Group XXI] In a coal - mining apparatus one run of a flexible belt conveyer extending along a face in a mine is so slidably coupled with a mining machine that it is maintained against a face by the pressure set up on the cutting means of the machine by the coal being broken away from the seam as the machine is advanced, that the machine on advancing moves the belt transversely of its length towards the face. In one embodiment the machine is a plough and the edge of the flat flexible conveyer belt e adjacent the plough is formed with a flange d, which slides through a complementary recess c formed in the body a of the plough, the shape of the flange and recess being such that disengagement cannot be effected by movement transverse of the. axis of the recess. In a second embodiment a sheet metal structure projects from the body of the plough, the upwardly facing concave surface of the structure being directed towards the plough. No flange is formed on the belt.
Patent GB-545808-A (GB)
Title: Improvements in or relating to diamond drill bits
IPC: B28D1/04
Filed: 1940-11-11
Abstract: 545,808. Copper alloys. ROAN ANTELOPE COPPER MINES, Ltd. (Heydenreich, J. H.). Nov. 11, 1940, No. 16347. [Class 82 (i)] [Also in Groups XXII and XXIII] Diamonds 12 are set in a rock-drill bit 11 by caulking at 13 and then covering the caulked diamonds with a layer of bronze &c. 14 melted in place, e.g. by a torch. Worn bits may be renovated by depositing bronze. Bronze containing 60 per cent. of copper, 39.25 of zinc and 0.75 of tin is suitable. Specification 119,759, [Class 83 (ii)], is referred to.
Patent GB-185850-A (GB)
Title: Improvements in means for operating aircraft controls
IPC: B64C13/00
Filed: 1921-06-14
Abstract: 185,850. Norman, J. M., (Representative of Norman, G. H.). June 14, 1921. Hydraulic transmission of power; machines and apparatus.-A servo-motor for assisting an aircraft pilot to operate the control surfaces comprises a variable-stroke hydraulic swash-plate pump and a hydraulic motor, the motor pistons being mounted on a common piston rod and wc,rking in coaxial stationary cylinders the inner ends of which are adapted to communicate with the pump. The pump body 19 is carried by a rotary shaft 12, which is driven by a windmill through bevel gearing 11. The pump body contains a number of parallel cylinders 23, in which can work plungers 28 universally jointed to arms 31 rotating with a swivel pin 32. This pin is carried by a bridge-piece 33, which can be rocked t) tilt the arms 31, as shown in Fig. 3, and so cause the plungers to reciprocate in the cylinders 23 with variable strokes as the pump body 19 rotates with the shaft 12. The control cables leading from the pilot's hand-wheel to the control surfaces pass around pulleys 16 carried by a lever 14, so that, when the control cables are operated, the lever 14 is rocked with its pivot 15, and the arms 31 are tilted in one direction or the other through levers and links 37, 36, 34. Liquid is then pumped, as the pump body 19 rotates, through ports 24, 25 from the motor cylinder 26 to the motor cylinder 27 or vice versa, according to the direction in which the control cables have been operated. Pistons 38, moving in the cylinders 26, 27, are fixed on a single rod 39, which passes through the partition 40 between the cylinders and is connected at its ends to the cables operating the control surfaces. One of the adjustable valves 41 opens if the pressure in one of the motor cylinders, becomes excessive, or when a motor piston reaches the inner end of its stroke. The lever 14 is also connected to the common rod of a pair of resistance pistons 47, working in cylinders 44 which communicate respectively with the motor cylinders 26, 27 through passages 48 and side ducts 49 in a cock 50. If the pilot releases his control wheel, the air pressure on the control surfaces acts through the charged motor cylinder and the connected cylinder 44 to move the lever 14 and the pump arms 31 back into the position ir. which the pump plungers 28 are not reciprocated. To enable the controls to be operated by hand alone, the cock 50 is turned to connect the motor cylinders 26, 27 to one another and to shut them off from the cylinders 44. The pump and motor drain into a tank 54 with a filling cap 64. Liquid is supplied by a gear-wheel pump 56 from the tank to a sump 52 for making good leakage in the motor cylinders and cylinders 44. The tank may also be filled through a filling cap 60 on the cock 50, and air allowed to escape by raising the pump body 19 off its seating 21.
Patent GB-610593-A (GB)
Title: Improvements in or relating to the control of magnetic clutches used in combination with internal combustion engines
IPC: F16D27/02
Filed: 1946-05-29
Abstract: 610,593. Controlling clutches. HUMBER, Ltd., MILLER, A. C., KAMPER, A. M., and BERRY, G. May 29, 1946, No. 16371. [Class 80 (ii)] Where an electromagnetic clutch is driven by an internal-combustion engine having a fast idling device on the carburetter and is energized by current supplied from an engine driven generator as described in Specification 610,519, means are provided for increasing the predetermined speed of automatic engagement when the fast idling device is in operation. In one embodiment, the fast idling device lever 2 is actuated by a cable 1 which also opens a switch 3 to allow the resistance 4 to be placed in the generator/clutch circuit. The value of the resistance may be such that the voltage applied to the clutch is substantially the same under normal and fast idling conditions. Other modifications show control of the fast idling device by thermostatic devices.
Patent GB-398785-A (GB)
Title: Improvements in and relating to ventilation devices
IPC: A62B13/00
Filed: 1933-06-07
Abstract: 398,785. Ventilation apparatus. DEUTSCHE GASGLUHLICHT-AUER-GES., 16, Rotherstrasse, Berlin. June 7, 1933, No. 16388. Convention date, Sept. 24, 1932. [Class 137.] In the ventilation of gas protective chambers, air is drawn through an inlet ? n and breathing filters m by a double-acting bellows a worked by hand operated levers e, and discharged through valves c, c<1> into the chamber to be ventilated. The filters m are screwed into a partition l in a box k mounted on a bedplate h, pipes p, p<1> leading from a chamber o in the box to the bellows.
Patent GB-1292411-A (GB)
Title: Plural output path torque transmitting mechanism
IPC: F16H37/00
Filed: 1971-05-21
Abstract: 1292411 Differential gearing; driving multiple axles BORG-WARNER CORP 21 May 1971 [1 June 1970] 16444/71 Heading B7H [Also in Division F2] In a motor-vehicle inter-axle limited-slip bevel-type differential gear 12 wherein differential rotation of a pair of telescoped output shafts 37, 38, respectively driving the rear and front propeller shafts 17, 15 is resisted by cone friction clutches 48, 55 arranged between side wheels 49, 50 and the differential casing halves 40, 41, bolted via a flange 25 to the input shaft 23, and pre-loaded by Belleville spring packs 56, the pre-load of the spring packs 56 may be reinforced (Fig. 2) or relieved (Fig. 3) by the bevel tooth reaction separating force which in Fig. 2 serves to additionally apply the core clutches 55 to further increase resistance to differential action, whilst in Fig. 3 it serves to relieve the spring pressure to reduce the cone clutch resistance to differential action, the pre-load of the spring packs 104 in Fig. 3 being of such magnitude that it can never be completely overcome by the outward bevel gear thrust, thus ensuring that the side gears 92, 93 are not moved axially outwardly. The inner shaft 37 is connected directly, in the usual fashion, to the rear propeller shaft 17 whilst the outer shaft 38 is telescoped over and journalled at 30 on the inner shaft 37 and drives via gears 36, 44 and a chain 45, all mounted within the integral inter-axle casing 21, to a shaft 42 connected directly, in the usual fashion, to the front propeller shaft 15.
Patent GB-1188332-A (GB)
Title: Improved Surgical Drainage Device
Inventor: BIDWELL ROBERT ERNEST
IPC: A61M1/00
Filed: 1967-03-14
Abstract: 1,188,332. Surgical drainage apparatus. R. E. BIDWELL, S. MISHKIN and E. J. HALLSTEIN. 14 March, 1967 [17 March, 1966], No. 16459/69. Divided out of 1,188,331. Heading A5R.  The subject matter of this specification is identical with .that described in the Specification 1,188,331 but the claims are concerned with a surgical drainage apparatus for draining fluid from a cavity, the apparatus being in one piece and comprising a trap chamber with an inlet port to collect liquid, and a seal chamber having an outlet port and communicating with the trap chamber, the seal chamber permitting the establishment of a liquid seal for separating the trap chamber from the outlet port.
Patent GB-275765-A (GB)
Title: Improvements in two stroke cycle internal combustion engines
IPC: F02B75/18
Filed: 1926-07-01
Abstract: 275,765. Bronander, W. B. July 1. 1926. Cylinders receiving liquid fuel.- The liquid fuel injection valves are opened by the piston. In the twin cylinder arrangement one valve is placed at the end of each cylinder; as one piston is in advance of the other, the valves open in sequence.
Patent GB-1217000-A (GB)
Title: Improvements in or relating to the production of propylene oxide and propylene glycol and its esters
Inventor: FLETCHER JOHN VINCENT
IPC: C07D301/14
Filed: 1968-04-05
Abstract: 1,217,000. Propylene glycol and its esters and propylene oxide. PETROCARBON DEVELOPMENTS Ltd. 8 April, 1969 [5 April, 1968], No. 16580/68. Heading C2C. Propylene oxide, propylene glycol or an ester thereof are prepared by reacting propylene with an equilibrium mixture comprising at least one carboxylic acid of formula RCOOH, in which R is hydrogen, phenyl or a C 1 -C 5  alkyl radical optionally substituted by one or more electrophilic substituents, a peracid or mixture of peracids corresponding to the carboxylic acid(s), hydrogen peroxide and water, the amount of water present being controlled during the oxidation to produce at least one compound selected from propylene oxide, propylene glycol and its esters with the acid RCOOH, the reaction being effected in the absence of mineral acid and heavy metal ions. The equilibrium mixture may be obtained by mixing an adduct of urea/hydrogen peroxide with an extracting solvent consisting of an alkyl ketone containing up to 7 carbon atoms, an alkyl ester containing up to 7 carbon atoms or a C 1 -C 4  alkyl ortho-phosphate and mixing or replacing the ketone in the resulting solution with the carboxylic acid(s) of formula RCOOH. Examples are given of the oxidation of propylene with an equilibrium mixture containing acetic acid, hydrogen peroxide, peracetic acid and water to give propylene oxide and propylene glycol. When additional water is added to the mixture acetates of propylene glycol are also formed.
Patent GB-355813-A (GB)
Title: Improvements in or relating to internal combustion engines of the liquid fuel injection compression ignition type
IPC: F02B19/04
Filed: 1930-05-29
Abstract: 355,813. Compression - ignition oil engines. RICARDO, H. R., 21, Suffolk Street, Pall Mall, London, and BERGIUS, W. M., 254, Dobbie's Loan, Glasgow. May 29, 1930, No. 16646. [Classes 7 (iii) and 7 (v).] In an engine in which an air charge is forced during the compression stroke into a chamber of smaller volume than the cylinder and the chamber is formed by an annular wall and a corresponding recess in the cylinder or piston, tangential passages are disposed in the annulus and impart a whirling motion to the charge as it enters the chamber at the end of the compression. A valve C<1>, which is located between the normal inlet and exhaust valves, is held open during starting when combustible mixture is admitted through an inlet part D<1>, and ignited by the plug D<5>. The piston E has an annular flange E<1> which enters the mouth of a combustion chamber B<1> in which is a fuel admission device F. Air from the cylinder is forced into the chamber through tangentially arranged slots E<2> in the flange. According to modified constructions, the slots are formed in the wall of the combustion chamber, and according to another modification, a projecting flange is secured to the mouth of the combustion chamber and enters a recess in the piston; the slits are formed in the projecting flange. Specifications 261,435, [Class 7 (iii), Internal-combustion engines, Carburetting- apparatus &c. for], 342,304, and 355,812 are referred to.
Patent GB-444010-A (GB)
Title: Improvements in valves for engines operating with a fluid under pressure
IPC: F01L31/22
Filed: 1934-06-04
Abstract: 444,010. Engine valves and valvegear. CAPROTTI, A., 2, Via Pergolesi, Milan, Italy. June 4, 1934, No. 16652. Convention date, June 2, 1933. Addition to 396,437. [Class 122 (ii)] [See also Group XXIX In a valve-gear of the kind described in the parent Specification, and wherein the valve V has two seats one conical and free to yield due to pressure and temperature changes while the other seat is held stationary, the angle between the generatrice of the surface of the free conical seat and the average line of inclination of the upper bell is made approximately 90‹ whereby the deforming strains of the movable seat develop in the direction of the generatrice. The valve is provided with rigid straight arms between the hub and the bell, and the arc PQ between the arms is so small that the change in its camber does not appreciably affect the valve tightness. The valve is placed under a closing force sufficiently strong to ensure contact of both seats.
Patent GB-385862-A (GB)
Title: Improvements in units for manifolding books
IPC: B41L1/24
Filed: 1932-06-13
Abstract: 385,862. Manifolding-books. BALLANTYNE, W. H., 111, Hatton Garden, London.-(Appleford Paper Products, Ltd. ; 78, Stirton Street, Hamilton, Ontario, Canada.) June 13, 1932, No. 16688. [Class 16.] A manifold unit comprises record leaves and a carbon leaf or leaves and is provided with one or more stubs for binding in a book, two or more of the leaves being secured together by an adhesive adjacent the stub or stubs, and the leaves being separable as a unit from the stub or stubs along a line at one side of the line of adhesion, and also separable from one another along a line at the other side of the line of adhesion ; or the unit may comprise two or more record leaves and one or more carbon leaves, the outer record leaves being connected together at their outer ends, the parts of the unit being connected at their inner ends in such a manner that the outer leaves enclose the intermediate leaf or leaves and are connected thereto, the unit including a stub for binding in a book. In the embodiment shown in Fig. 1, each unit comprises an integral sheet of paper folded at 3 to form two record leaves 4, 5, each provided with a stub whereby it is bound into the book. A carbon leaf 6 is interposed between the leaves 4, 5, and is preferably carbonized on its under side only. Adjacent the stubs, at 7, the three leaves are secured together by an adhesive, and lines of weakness 8, 9 are provided in each leaf on each side of the line of adhesion to enable the unit first to be detached as a whole from the book and then subsequently to allow the carbon leaf to be separated from the record leaves. The carbon leaf only may be provided with a stub bound into the book. In the embodiment shown in Fig. 5, a third record leaf 10 provided with a stub 10a is interposed between the record leaves 4, 5, and the carbon sheet 6 is folded upon itself to embrace the third record leaf 10. The carbon sheet 6 is carbonized alternately on opposite sides so that impressions are made on an underlying record leaf only, and is provided with a stub 6a by means of which it may be bound into the book. The record leaves and carbon sheet are connected by an adhesive and lines of weakness 8, 9 are provided as before. In modifications of the arrangement shown in Fig. 5 (1) the interposed record sheet is translucent and overlies the carbon leaf which is a single leaf carbonized on each side, (2) two separate carbon sheets are provided instead of a single folded one, (3) the folded carbon sheet is formed with a stub at each end adapted to be bound into the book, and (4) the two outside record leaves are not connected together at their outside ends, and two single carbon sheets, each having a stub, are provided. The two outside record leaves may, instead of being integral, be connected at their outside ends bv adhesive. All the record leaves may be differently coloured. When the units are detached as a whole from the stubs they may be used for subsequent entries or passed through dating &c. machines. The book is provided with the usual stop-sheet 2.
Patent GB-1462978-A (GB)
Title: Optical apparatus
IPC: G02F1/13363
Filed: 1974-04-17
Abstract: 1462978 Controlling light RANK ORGANISATION Ltd 16 April 1975 [17 April 1974] 16709/74 Heading G2F When a "twisted" layer of nematic liquid crystal material with positive dielectric anisotropy is subjected to an electric field across its thickness so that it changes from an optically active state to a uniaxial state with its optic axis substantially perpendicular to the plane of the layer, the resulting field of view of the layer as disposed between polarisers is restricted due to alteration of the polarisation of off-axis rays, as in conoscopic interference figures. The field of view is broadened by disposing a uniaxial crystal plate parallel to the liquid crystal layer, the two uniaxial optic axes being parallel and the signs of their optical anisotropics being different. The presence of the crystal plate reduces the field of view of the unenergized layer, and preferably the plate is chosen such that the fields are substantially equal in the presence and absence of an electric field across the nematic layer.
Patent GB-551097-A (GB)
Title: Skin covered structures
IPC: B64C3/26
Filed: 1941-12-30
Abstract: 551,097. Aircraft hangars. CRAIGON, A. Dec. 30, 1941, No. 16759. [Class 20 (i)] [Also in Group XXXIII] i For securing a fabric or sheet-metal covering to the framework of an aircraft wing, fuselage, or field hangar, a number of pairs of ribs, having' contiguous sides undercut, extend across the framework and the covering is pushed into the spaces between the ribs against which it is clamped by wedge members and filler strips secured together. Fig. 3 shows a pair of such ribs comprising tubular members 2 which extend across the ribs 1 of the plane structure to serve also as spar booms. Struts 15 connect the upper and lower parts of the ribs 1 together. The covering 11 is pushed into the space between the tubes 2 and wedge members 5, which are narrow enough in one dimension to be inserted between the tubes, are so inserted, and turned through a right angle. Shaped filler strips 3 having square holes to engage the squared shanks of bolts 6 integral with the wedge members 5 are then placed in position and the members 3, 5 are drawn together by nuts 7 to clamp the fabric against the tubes 2. The lateral thrust is supported by shaped recesses in the ribs 1 at the points where the tubes 2 cross the ribs 1, but at positions between the ribs 1 the thrust is taken by C-shaped members spanning the two tubes Pins 10 on the wedge members 5 are forced through the fabric into holes in the ribs 1 to prevent lateral movement of the wedge members. A modification is described in which square tubes with corners opposed replace, the tubes 2. The space above the nuts 7 is closed by a filling 9. The edges of the covering may be secured by screws 13 and where joints occur parallel to the tubes 2 the edges of the material are overlapped beneath the wedge members 5.
Patent GB-167600-A (GB)
Abstract: 167,600. Kane, W. H., and McClements, T. May 15, 1920. Disc and like mills.-Relates to grain mills having grinding-plates provided with deep grooves to feed the grain inwardly or outwardly to or from the centre to the circumference of the plate. The grinding-plates are made with deep grooves or slots b having one or more stoppers c<1>, c<2> in each groove to prevent the passage of unground grain outwardly or inwardly along the grooves or slots. The stoppers may be arranged to form a pattern on the plate. The plate may be slotted and provided with a separate back-plate. Reference has been directed by the Comptroller to Specifications 18716/95, 13307/03, 9166/06, 4606/07, and 133,476.
Patent GB-563584-A (GB)
Title: Improvements in and relating to jets for blowlamps, blow-torches, or the like
IPC: H02K23/50
Filed: 1942-11-26
Abstract: 563,584. Gas burners for blow-lamps. GREY, H. HAMILTON-. Nov. 26, 1942,No.16767. [Class 75 (i) In a blow-lamp or torch of the kind in which the gas issuing from a pilot jet G on a blow-lamp body A impinges on the outlet of a main jet at the end of a bent length of small-bore tubing B, the main jet is bored out to form a cupshaped orifice D and is filed to form a flat surface F on which the flame from the pilot jet impinges. Flame extinction by sudden movement of the blow-lamp is thereby prevented. The main jet may be made as a separate fitting and be threaded on or otherwise secured to the tubing B.
Patent GB-372585-A (GB)
Title: Combined steering and stabilising control device for aircraft
IPC: B64C13/00
Filed: 1931-06-09
Abstract: 372,585. Aircraft control gear. BERNARDI, M. DE, 42, Via Della Mercede, Rome. June 9, 1931, No. 16817. Addition to 371,526. [Class 4.] Apparatus for simultaneously adjusting the rudder and ailerons of an aeroplane as described in the parent Specification has means for adjusting the rudder control relatively to the aileron control as desired and relocking it to the aileron control. Elastic restraint to restore the hand-wheel to any adjustable mean position also is provided. The rudder control pulley 1 and its sprocket 51 is loosely mounted on its shaft 4 and is connected by a chain 7<1> to a sprocket 8<1> loose on the hand-wheel shaft 10. The sprocket 8<1> has a lever 8<2> provided with a clamp 8<4> for locking it to the hand-wheel 11 after the rudder has been adjusted to connect for any asymmetry of thrust or resistance on the aircraft. A hand-grip 8<3> is provided on the lever 8<2> and has an indicator moving over a scale marked on the hand-wheel. In order to restore the control to a predetermined and adjustable position, an elastic cord 46, Fig. 3, connected to a lever 47 is secured to a pulley 45 on the shaft 4. The lever 47 is adjustable by a rod 49 and nut 50. Alternatively a cable 51, Fig. 5, may be secured to the pulley 45 and passed around pulleys 53 .. 56, springs 52 being interposed in the cable lengths. The top part of the cable can be fixed against movement by a clamp 57 after the shaft 4 has been turned to the required position.