baber/WOPTO huggingface dataset:
Patent GB-721734-A (GB)
Title: Improvements in or relating to free piston or semi-free piston internal-combustion engines
IPC: F02B71/00
Filed: 1952-12-15
Abstract: 721,734. Free piston engines ; alarms. PESCARA, R. P. Dec. 15, 1952 [Dec. 14, 1951], No. 31692/52. Classes 7 (1) and 7 (2). [Also in Group XXVIII] In a free piston engine of the type comprising opposed pistons synchronised by connecting rods 3, 4 connected to a crank 1 pivoted at 2 and arranged to rotate from one stop position, Fig. 1, through an angle greater than 180 degrees to its second stop position, Fig. 2, during which the pistons perform a complete reciprocation, the fuel injection pump 10 is actuated by a cam 7 connected to the oscillating crank 1 and having two working surfaces 8, 9 which are operative in succession to actuate the pump at or near each stop position of the crank. The invention is applicable to free piston engines in which the crank 1 is designed to operate permanently in the above manner and also to engines in which the crank 1 normally rotates through an angle less than 180 degrees, so that the crank returns to its first stop position at the end of each oscillation of the pistons, but in which occasionally, under certain working conditions, the crank rotation exceeds the normal angle and the crank operates as described above, a warning device preferably being provided to indicate when this occurs.
Patent GB-484388-A (GB)
Title: Improvements in and relating to fishing line floats
IPC: A01K93/00
Filed: 1937-11-18
Abstract: 484,388. Fishing-line floats. NELSON, M. F. Nov. 18, 1937, No. 31736. [Class 48] Line-floats 1 consist of an elongated buoyant body cut square across at the top 2 and tapering to a blunt lower end 3 which carries means for attaching the line, the action of the float when drawn below the surface of the water causing a distinct sound to be made. The top 2 may be hollowed out as at 4 to enhance this sound. The line 9 is secured by a knot or by winding to a spring snap 8 attached by a swivel 7 to a staple 5 driven into the end 3.
Patent GB-265738-A (GB)
Title: Improved construction of holder for use with chair arm or the like
IPC: A47C7/68
Filed: 1925-12-16
Abstract: 265,738. Bellow, E., A. Dec. 16, 1925. Ash-trays D are connected to a strip A having one end B thickened and held between the seat cushion E and the chair arm F. The strip extends over the chair arm and its other end may carry the ash-tray or may be weighted if the tray is carried centrally. The end B is thickened by rolling the material of the strip on itself or by applying a separate pad B<1>.
Patent GB-290648-A (GB)
Title: Improvements in talking and like apparatus
IPC: G10K13/00
Filed: 1927-11-25
Abstract: 290,648. Parlophone Co., Ltd., (Assignees of Lindstrom Akt-Ges., C.). May 19, 1927, [Convention date]. Cases with internal horns. -A sound-magnifying conduit in a. gramophone or the like, designed for providing a compact arrangement with comparatively great length within the casing is shaped as shown. From the tone-arm orifice 5 a uniformly-flaring duct 6 extends obliquely downwards and then forms a semicircular bend 7 lying in an horizontal plane near the bottom and rear wall 10 of the case; the portion 7 is extended to form a bend 9 which runs partly beneath the orifice 5 towards the rear wall and then opens into the bell-mouth portion 11. The conduit may consist of two or more parts, and a telescopic joint may be made at 12. The parts 8, 9, 11 of the conduit are preferablv of rectangular cross-section having a greater width than height.
Patent GB-1300025-A (GB)
Title: Improvements in stirling cycle hot gas engine power-control systems
Inventor: HAKANSSON SVEN ANDERS SAMUEL
IPC: F02G1/05
Filed: 1971-07-07
Abstract: 1300025 Stirling cycle hot gas engines UNITED STIRLING (SWEDEN) AB & CO KB 7 July 1971 31824/71 Heading F1S The invention relates to a Sterling cycle hot gas engine comprising a plurality of dead volume chambers 17 and 31-34 adapted to be selectively connected to the working chambers of the engine through respective passages, each including valve means, a non-return valve 16 being connected in parallel with one of the valve means. According to the invention at least one of the valve means comprises a valve piston 18 or 39-42 working in a valve cylinder, the valve piston being capable of opening or closing the passage, and the interior space in the valve cylinder behind the valve piston is connectible to a working chamber 5 of the engine through one or other of two conduits 11, 13 each containing a respective non-return valve 12, 14 one of these non-return valves 14 allowing flow of gas only from the valve cylinder to the working chamber and the other of these non-return valves 12 allowing flow of gas only from the working chamber to the valve cylinder. The connections to the conduits 11, 13 are controlled by solenoid operated valves 21.
Patent GB-675955-A (GB)
Title: Improvements in or relating to very short wave radio aerial systems
Inventor: RUST NOEL MEYER
IPC: H01Q3/16
Filed: 1948-12-09
Abstract: 675,955. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 8, 1949 [Dec. 9, 1948], No. 31906/48. Class 40 (vii). In a radio directive aerial system of variable directivity comprising a mirror M, loss of forms is avoided by employing a phase correcting member P analogous to the correcting lens employed in a Schmidt optical system. In the case of transmission, the emergent rays 2 (21) are maintained irrespective of the position of the source S in the image surface 1-1, whilst in the case of reception all parallel rays incident on member P are concentrated on a small area in the image surface irrespective of the angle of incidence. The correcting member comprises a metal lens, dielectric plate or a combination thereof and is positioned in a plane passing through the centre of curvature of the mirror which may be of spherical or cylindrical form. The element S may be constituted by a slot aerial at the end of a wave-guide, movement for scanning being obtained by movement of the slot or by providing a " slot vernier system " comprising a system of differently moving slots, one behind the other, so arranged as to provide only one through aperture at any instant. More than one transmitting source or receiving element may be used simultaneously in the same system. An alternative receiving element may comprise an envelope containing an inert gas, such as neon, in which is positioned a slotted flat plate. The plate is normal to the axis of the whole system and the slots are each a halfwave long, being arranged in rows and columns. A received beam excites a localized area of the plate causing a visible glow at the slots in that area. In another embodiment, Fig. 4 (not shown), the rays from the mirror first project on to a combined flat plate and circular polarizer and from there are reflected out through the phase correcting member. This embodiment may be re-arranged, Fig. 5 (not shown), by exchanging the position of the polarizer and correcting member. In yet another embodiment, Fig. 6 (not shown), a half-reflector and half-lens correcting member are employed with the source off-set from the path of the emergent beam so that it causes no shadow or obstruction.
Patent GB-188971-A (GB)
Title: Improved wheel-barrow
IPC: B62B1/18
Filed: 1921-11-30
Abstract: 188,971. Fleming, R. Nov. 30, 1921. Bodies.-The body 1 of a barrow fitted with shafts and rests is of box form and is surmounted by a platform 6 having side rails 7, forming shelves extending beyond the walls. A movable partition 5 may divide the body 1.
Patent GB-926793-A (GB)
Title: Railway cars for transporting road vehicles
Inventor: CLEJAN DEODAT
IPC: B60P3/075
Filed: 1960-09-19
Abstract: 926,793. Railway vehicles. GENERAL AMERICAN TRANSPORTATION CORPORATION. Sept. 19,1960, No. 32185/60. Class 103 (4). A railway car A Fig. 3, for transporting road vehicles, has a frame supported at each end by a bogie truck and formed of a centre sill 10 having spaced I-beams 11 secured by transverse beams 12, and a plurality of spruce and lateral transverse members 13 secured to the beams 11 and carrying platforms 14, wherin the upper flanges of the beams 11 serve as ribs for engagement by auxiliary flanged wheels 53 provided on a road vehicle B.1, between the usual road wheels 52.1 and the platforms serving as a roadway below the rails and engageable by the road wheels of a conventional road vehicle, not provided with flanged auxiliary wheels, whereby the car can be used to transport both types of road vehicle. Referring also to Fig. 6, the road vehicle axle 51 or 51.1 Fig 3, is resiliantly secured to the car by the hooked upper ends of a pair of threaded rods 32 operable by integral nuts and worm gears 31 Fig. 5, rotatably mounted in a saddle member 29 and actuatable by worms 33 on a shaft 34 engageable by a handle. The handle is engageable with either end of the shaft 34 after passing through a hole 11 provided in the associated I-beam 11. The saddle 29 is welded to a pair of rods 21, each slidable in a bracket 16 and a housing 15 secured by rivets 17 to the respective beam 11. The rod 21 is slidable in either direction against the action of a shock absorber in the form of a plurality of rubber mats 23 disposed on the rod between discs 24, 26 on the rod and engaging shoulders on the housing. The lower ends of the threaded rods 32 and secured by a member 35 whereby rotation of nut and worm gears causes vertical movement, only of the rods. In another embodiment described with reference to Fig. 9 (not shown), the integral nuts and worm gears are driven by a single worm on a shaft extending longitudinally of the car and operable by a transverse shaft through bevel gears. In yet another embodiment described with reference to Figs 10 and 11 (not shown) the upper end of each threaded rod is provided with a selflatching hook device which can be manually released, the hook device in its operative position encircling the road vehicle axle.
Patent GB-198967-A (GB)
Title: Improvements in apparatus for supporting and straining lawn tennis and other similar nets
IPC: A63B61/02
Filed: 1922-11-24
Abstract: 198,967. Ayres, Ltd., F. H., and Kearns, W. T. Nov. 24, 1922. Lawn-tennis and like net supports.-A supporting and straining device for lawntennis and like nets comprises a conical, gear-driven, winding drum as described in Specification 2010/07, mounted with its axis at right angles to the plane of the net in a slot or recess in the upper end of a post. As shown in the Figure, a conical drum 5 is formed integral with trunnions 6, 6 whereby it is rotatably mounted in a post 1. The major periphery of the drum is formed as a worm wheel 7 and engages a worm 8 connected to an operating handle 9. The net supporting wire 11 passes over a pulley 3 and is attached to a hook 10 projecting from the surface of the drum.
Patent GB-967709-A (GB)
Title: Rotary regenerative gas heat exchangers
IPC: F02C7/105
Filed: 1963-08-15
Abstract: 967,709. Thermal regenerators. GENERAL MOTORS CORPORATION. Aug. 15, 1963 [Aug. 24, 1962], No. 32270/63. Heading F4K. In a rotary regenerative heat-exchanger comprising a housing 34 divided into two zones by a diaphragm 26 for the passage of hot and cold gases respectively, and a porous regenerator matrix, rotatably mounted in the housing and extending into both zones; the pressure difference which exists between the gases flowing through the zones and which produces a net force on the matrix in the direction of the lower pressure zone, is compensated for by a device which is responsive to the pressure difference between the zones, and exerts on the matrix a force proportional to such difference. In the form shown, the matrix 16 is of annular form and is divided into two zones by the diaphragm 26, cold air from an air compressor being passed through the lower zone, and hot low-pressure exhaust gas being passed through the upper zone, which is substantially twice the size of the lower zone. The compensating force is exerted vertically downwards by the compensating device situated above the upper periphery of the regenerator; which device comprises an expansible chamber motor 60, a lever 61 in the form of a rhomboidal frame biased by the motor and fulcrumed on an adjustable screw 66, and bogies 64 mounted on the lever 61 and bearing through rollers 80 against the periphery of the matrix 16. The expansible chamber motor 60 comprises a piston 71, movable within a cylinder 72 with a pistonrod 70 acting on the lever 61. The space above the piston has a connection 77 to the air compressor outlet, and a port 78 connects the space below the piston to the exhaust gas zone of the regenerator. The gas pressure difference acting on the piston is aided by a pair of Belleville springs 76. The matrix is supported on rollers 50, 51 positioned below, and adjacent to, the parts of the diaphragm 26 separating the housing 34 into the two zones and is driven by gearing 53, 48.
Patent GB-821317-A (GB)
Title: Moulding mixture for production of shell-like moulds for foundry purposes
IPC: B22C1/20
Filed: 1955-11-11
Abstract: 821,317. Mould and core materials. POLYGRAM CASTING CO. Ltd. Nov. 11, 1955 [Nov. 16, 1954], No. 32374/55. Class 83 (1). A composition for making moulds and cores comprises a mixture of a granular refractory material, e.g. quartz-sand, a bituminous material, and elemental sulphur. The bituminous material may be a natural bitumen or a tar, pitch, or wax resulting from blowing, destructive distillation, &c. The granular material may be coated with the molten bituminous material, in which case, after cooling, the mass is ground with elemental-sulphur, or the bituminous material and sulphur may be first ground together and then mixed with the dry granular material.
Patent GB-142419-A (GB)
Title: Device for testing or repairing drains, sewers or the like
IPC: F16L55/1645
Filed: 1919-12-24
Abstract: 142,419. Bostel, F. J. Dec. 24, 1919. Indicating, locating, and repairing leaks.-A device for testing and repairing drains &c. consists of a collapsible rubber air container 4 closed at each end by heads 5 and bolted to two stout rubber disks 3. The bolts 6 are provided with eyes 9 and a chain or rod is attached at each end to one of the eyes in order to take the longitudinal stress. In one of the bolts 6 is drilled a duct 11 through which air is pumped into the container. A wire coil 14 surrounds the tube 4 and serves to protect it from damage or to prevent undue expansion. In operation, the space surrounding the container is filled with liquid cement and the device is inserted in the drain. On pumping air into the container, pressure is exerted on the cement, tending to force it into the leaks or faults in the drain. The device is then gradually drawn or pushed through the drain. The apparatus may be used for testing purposes by connecting a pressure gauge to shew the pressure within the container. The presence of a leak is indicated by a drop in pressure due to expansion of the container.
Patent GB-1323036-A (GB)
Title: Means for preventing back-rotation
IPC: E21D20/00
Filed: 1971-04-19
Abstract: 1323036 Rock bolt assembly C I WILLIAMS 19 April 1971 [3 Feb 1970] 32443/72 Divided out of 1323031 Heading F2H The subject matter of this Specification is identical with that described in Specification 1,323,033, but the invention claimed is an arrangement for preventing loosening of a coupling joining two rod sections forming a rock bolt to which torque is applied to fix an anchoring device in a hole in a rock formation and comprises normally inter-engaged means adjacent the coupling establishing greater torque resistance to relative back rotation than the torque required to back-rotate the anchoring device.
Patent GB-937165-A (GB)
Title: Organic peroxides
Inventor: RIECHE ALFRED
IPC: C07D317/04
Filed: 1960-09-21
Abstract: The invention comprises compounds of formula (II) wherein R is an alkyl or aralkyl radical (e.g. ethyl, propyl, t-butyl, benzyl or cumyl) and a method of preparing them by reacting the hydroxydioxolane (1) with R.OOH in presence of sulphuric acid, sulphonic acid (e.g. of toluene) of perchloric acid. <FORM:0937165/IV(a)/1> <FORM:0937165/IV(a)/2> <FORM:0937165/IV(a)/3> By using H2O2 instead of R.OOH, "mesityl oxide peroxide" (III) is obtained.  The examples describe the preparation of compounds (II) (R = ethyl, t butyl and cumyl) and (III).
Patent GB-1462917-A (GB)
Title: Process for electrowinning of copper valves from solid forms thereof
IPC: C25C1/00
Filed: 1974-07-23
Abstract: 1462917 Electrowinning copper C W WOJCIK and BC WOJCIK 23 July 1974 [24 July 1973]  32509/74 Heading C7B Cu values are electrowon from a finely-divided cement Cu and/or Cu sulphide concentrate (e.g. chalcocite, bornite, chalcopyrite, covellite or chrysocolla), continuously agitated (i.e. leached) in H 2 SO 4  electrolyte in which is established and maintained at least 10 g/l of dissolved Fe e.g. added as FeSO 4 , by passing D.C. through the electrolyte between a cathode and an anode at a cathodic C.D. of at least 44À4 ASF to electro-deposit Cu on the cathode with liberation of hydrogen which continuously reduces ferric to ferrous Fe. Ferrous Fe is oxidized at the anode acting to ionize elemental Cu. For cement Cu, the Fe and Cu concentrations are preferably each 20 to 40 g/l; for sulphide concentrates (e.g. Cu 2 S), the Fe concentration is preferably 10 to 35 g/l and the Cu concentration is at least 25 g/l. A D.C. voltage of 2 to 5 volts is preferred. Agitation may be effected by several oscillating steel plates with paddles in an octagonal anode tank.
Patent GB-928427-A (GB)
Title: Rubber processing
IPC: C08K5/01
Filed: 1961-09-11
Abstract: A rubber composition comprises (a) as the major rubber constituent a rubbery homepolymer of butadiene-1,3 in which at least 80% of the units are joined cis 1,4 and which exhibits a 4-minute ML Mooney viscosity at 100 DEG C. in the range 35 to 120 and (b) from 1 to 25 parts per 100 of the homopolymer of a hydrocarbon oil having a viscosity-gravity constant from 0,79 to 1,0. Also present may be 0,5 to 10 parts of an organic acid, 0,5 to 15 parts of a rubber tackifying agent, 25 to 125 parts carbon black, 0,5 to 10 parts zinc oxide, 0,5 to 5 parts sulphur and 0,2 to 2,0 parts accelerator. Rosin and a condensate of formaldehyde with an alkylated phenol are specified tackifying agents, while preferred organic acids are those containing at least 10 carbon atoms per molecule.  The preferred composition may be prepared by combining the homopolymer with hydrocarbon oil, masticating the mixture, adding 35-80 parts of a high structure carbon black having an oil absorption value of 49 to 76 litres/45 kg., and masticating the mixture at 66 DEG  to 204 DEG C.  The products may be vulcanized.
Patent GB-466420-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/32
Filed: 1935-11-23
Abstract: 466,420. Slicing-machines. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO, Ltd. (Maatschappij van Berkel's Patent N.V.) Nov. 23, 1935, No. 32539. [Class 28 (ii)] [Also in Group XVII] - The slice-receiver of a bread-slicing machine has a mounting permitting it to be tilted from a slice-receiving position to a slice-discharging position, the receiver being adapted, when in the latter position to pass the slices into a holder or container adjacent to, or around, its discharge end. As shown the invention is applied to a machine having a disc knife, with a combined rotary and orbital motion, which is enclosed in a housing 1. Openings in the housing register with a loading tray 23 and with the slice receiver which has a bottom 2 having oblique slots 3 and side walls 4 including parts 5 arranged to be urged inwards about the pivots 6, by springs. The side walls have slots 7 in which brackets 8 with hinges 8a are slidable. Wings 9 are attached to the pivots and are urged into positions transverse to the bottom 2 by springs 10. The main body 11, forming the front of the receiver, has downwardly extending arms 12 pivoted at 13 to a link 14 pivoted at 15 to a fixed bracket 16. A stop 17 locates the receiver in its normal position, and a handle 18 facilitates manipulationof the receiver. A holder 19, has a ledge 20 to support the slices when the receiver is tilted into its discharge position. A removable crumb tray 22 is provided. When the loaf is sliced, the slices advance on edge between the walls 4, and the wings 9 are pushed along by the slices. When the receiver has the required number of slices, it is tilted, whereupon the weight of the slices displaces the wings 9 against the action of the springs 10 so that they are pushed out of the way of the slices which fall past the spring - pressed walls 5 which bear lightly on the slices so that they are discharged in a neat pile. The receiver is then swung into the oppositely inclined position to allow the wings to gravitate to the initial position whereupon the receiver is manipulated into its slice receiving position. If desired, a bag may be placed over the end of the receiver. The loading tray and slice receiver are provided with guards 24, 25 which are associated with safety-means as described in Specification 351,134, [Group XXIV]. The stop 17 may form the movable element of a switch in the motor circuit so that the circuit is broken when the receiver is tilted for discharge.
Patent GB-772944-A (GB)
Title: Rotary compressor
IPC: F04C29/02
Filed: 1955-11-15
Abstract: 772,944. Rotary compressors. JAEGER MACHINE CO. Nov. 15, 1955 [March 23, 1955], No. 32589/55. Class 110 (2). A rotary compressor plant, having means for supplying lubricant to various parts, has additional means which prevent the accumulation of excessive quantities of lubricant in the lower parts of the compressor. As shown, the plant has low-pressure and high-pressure stages 11, 12 of a sliding-vane compressor supplied with oil for cooling, lubricating and sealing purposes by means of a pump 25, which may be of the gear type. An engine 10, preferably an internal-combustion engine, drives the compressor rotors 14, 15, the pump 25 and an additional pump 33, which may be a gear pump, and which sucks oil that accumulates in the bottom of a manifold 13 or inlet to the cylinder 12. The L.P. cylinder 11 has a valve-controlled air inlet 16, having a filter 17, and delivers air through the manifold 13 to the H.P. cylinder 12. The latter discharges into a receiver 19 and oil is drained into a tank 20. The compressed air passes into a separator 21 where oil is filtered out, some oil draining through a pipe 26. Each compressor chamber is provided with oil under pressure, by the pump 25, by way of inlets 23, 24, Figs. 5, 6 (not shown). A checkvalve 28, in the line 26, is provided to prevent oil-laden air from being forced up the pipe 26 when the compressor is started up. Air pressure in the receiver 19 forces oil from the tank 20 through a line 29 to an oil cooler 30 placed near the engine radiator 31. From the cooler, the oil passes through a pipe 32 to the pump 25. In an alternative arrangement, the two oil pumps are arranged between the H.P. stage and the receiver, Fig. 7 (not shown).
Patent GB-173941-A (GB)
Title: Improvements in bicycle pedals
IPC: B62M3/08
Filed: 1920-11-19
Abstract: 173,941. Peace, H. W., and Gibson, J. W. Nov. 19, 1920. Pedals for bicycles, of the kind wherein the frame comprises a unitary moulded structure having end plates and integral side bars spaced from the barrel, are formed with the side bars parallel with the barrel and are fitted with pedal rubbers which are slotted longitudinally and are adapted to be distended to allow of the insertion of the bars into the slots, the rubber material gripping the side bars to retain the rubbers in position. As shown, the rubbers 9 have longitudinal slots or grooves 11, 10 in the two sides to receive inner and outer side bars 7, 6, the rubber between the grooves being hollow as at 12 to enable the rubbers to be pressed into position. A cap 14, screwed to the outer end of the pedal frame, fits over a circular flange surrounding the cup-shaped ball-bearing recess at the end of the barrel. In a modification, the side bars are formed substantially T-shaped in cross-section, and the rubbers, which have an internal longitudinal slot and are split on one side, are placed in position by spreading open the split side.