baber/WOPTO huggingface dataset:
Patent GB-230400-A (GB)
Title: Improvements in or relating to flexible harrows
IPC: A01B19/08
Filed: 1924-12-30
Abstract: 230,400. Aitkenhead, E. Dec. 30, 1924. Harrows.-In a link for a flexible harrow comprising two horizontal eves A and two diverging arms B each formed with a vertical hook or eye D, the tongue of which is bent to form a tine E, the diverging arms are bent to form elbows F that prevent the tines from being forced back so as to open the hooks when the harrow is drawn in a direction opposite to that of the arrow shown.
Patent GB-1275679-A (GB)
Title: Method and apparatus for the manufacture of textile padding material
Inventor: BOLLIAND R
IPC: B68G7/02
Filed: 1970-06-26
Abstract: 1275679 Bonded fibre fabrics; lop forming machine RHODIACETA 26 June 1970 [27 June 1969] 31213/70 Headings DIN and D1R By means of tenters, tensioning means and rollers a tow formed from continuous manmade filaments is spread and fed under tension between smooth, high friction rubber coated rollers 1, 2. Roller 2 rotates at a higher peripheral speed than roller 1, and simultaneously reciprocates axially through amplitude a, under the influence of crank 4 and ball thrust housing 6. The sheet is received, without tension, upon a conveyor belt, passed into a spraying chamber to be sprayed on both sides with binder, and heated to cure the binder. The filaments, which may be crimped in a stuffing box, may comprise nylon 6, 6.6, 6.10 or 11, polypropylene, polyethylene terephthalate, vinylic polymers, polyacryonitrile or polyacrylonitrile containing copolymers.
Patent GB-1377972-A (GB)
Title: Process for preconception selection of sex of offspring
IPC: A61K35/52
Filed: 1972-06-30
Abstract: 1377972 Sperm separation J L LANG 30 June 1972 [2 July 1971] 31222/71 Heading C6F Male and female sperm are separated by treating a fluid containing them with an electrostatic charge bearing agent having a net charge of one polarity to handicap sperm of the opposite charge. The agent may be a linear, branched, ladder or cross-linked synthetic organic charged polymer, a natural or synthetic polyelectrolyte, or an ion exchange or semi-conducting material. The handicapped sperm may become flocculated by the treatment and be removed by filtration, and then freed from the agent and allowed to move freely again. The sperm may be cattle, rabbit, or human sperm. The fluid may contain an isotonic diluent, e.g. a buffer, aqueous sodium citrate, or egg yolk, and may also contain a mineral flocculating material and a magnetically susceptible material. The fluid containing the handicapped sperm may be separated by electrophoresis. The separated sperm may be used for artificially inseminating a female mammal.
Patent GB-1320543-A (GB)
Title: Winding machine for covering a hose of high polymer with reinforcing threads
IPC: B65H81/08
Filed: 1970-06-26
Abstract: 1320543 Reinforcing hoses INDUSTRIE PIRELLI SpA 26 June 1970 [4 July 1969] 31246/70 Heading F2P A machine for covering a flexible hose with at least a pair of layers of reinforcing threads helically wound in opposite directions, is constituted by at least a pair of winding units 1, 1<SP>1</SP> operated in opposition by a single motor 2 and aligned along the same axis. Each winding unit comprises a rotatable hollow shaft 3, through which the hose is passed; at least one group of closed containers 12 each enclosing a package of thread 15 and mounted in a star-like arrangement on respective discs 10 with their axes inclined from 10 to 20 degrees with respect to the shaft axis; a thread guide ring 17 keyed to the shaft in the vicinity of one end thereof for guiding all the threads on to the hose; a distributing head 19 to lay the threads on to the hose and braking means 24 for each thread and acting on the thread during its travel from its respective container to the guide ring. As shown, each winding unit is composed of three groups of containers each group consisting of six containers. The braking means 24 for the threads from one group of containers are secured to the disc 10 which precedes that group or to the guide ring 17 and each comprises (Fig. 3) a support 25 fast to the shaft 3 of the machine, a stem 26 with a hole or slit 27, and two discs 28 29 free to slide along a portion of stem 26 in the vicinity of hole 27 against the action of spring 30. The thread passes between the discs 28, 29 and through hole 27 and in use when the machine is rotating only slowly tension is controlled by the pressure between the discs and when the machine is operating at high rotational speeds, centrifugal force acts on the discs to compress the spring 30 so increasing the tensioning of the thread.
Patent GB-896070-A (GB)
Title: Automatic drop hammer for soil test boring
IPC: E21B49/00
Filed: 1960-09-12
Abstract: 896,070. Boring earth and pile driving hammers. URBAN, S. Sept. 12, 1960, No. 31323/60. Classes 68(2) and 85. A hammer for soil test borings, well drilling and pile driving comprises a frame 10, a vertical hammer assembly 21 having a shaft 20 supported for reciprocating movement in the frame, motor means 40 on the frame for driving the hammer, a rack gear 23 supported for vertical reciprocating movement on the shaft 20, a compression spring 30 between the upper end 32 of the shaft and the upper end of the rack gear 23 yieldably resisting relative movement between the shaft 20 and the rack gear in one direction, a compression spring 31 between the lower end 33 of the shaft and the lower end of the rack yieldably resisting relative movement between the shaft 20 and the rack gear 23 in the opposite direction, the motor means drivingly engaging the rack gear and comprising a drive shaft 49 with a sector gear 48 secured thereto for rotation within a plane common to a plane containing the teeth of the rack gear 23, the sector gear having a toothed portion with teeth 50 rotatable into the path of movement of the rack gear for meshing engagement therewith during a portion of each revolution of the drive shaft, the sector gear releasing the rack gear during the other portion of each revolution of the drive shaft, whereby continuous rotation of the sector gear in a single direction is operative to raise the rack gear 23 during the first mentioned portion of each revolution of the drive shaft, this upward movement of the rack gear compressing the spring 30 to raise the shaft 20, and disengagement of the rack gear during the second mentioned portion of each revolution of the drive shaft allowing the rack gear and shaft. 20 to drop by gravity into striking engagement with a workpiece, downward movement of the rack gear relative to the shaft 20 being limited by compression of the spring 31, said compression returning the rack gear 23 partially upwardly into engagement with the toothed portion of the sector gear for elevation by the motor means.
Patent GB-742395-A (GB)
Title: Hydraulic piston-and-cylinder actuators, particularly for vehicle braking systems
IPC: F16D65/22
Filed: 1952-12-11
Abstract: 742,395. Hydraulic brakes. BELENKIJ, J. Dec. 11, 1952, No. 31397/52. Class 103 (1). In a hydraulic piston-and-cylinder actuator particularly for vehicle braking systems comprising a slave cylinder (wheel cylinder) which is actuated by a master cylinder and mechanically operates the brake shoe or shoes, the slave cylinder comprises a main piston which actuates the brake shoe, an auxiliary piston having the same diameter, disposed between a supply port for the pressure liquid and the main piston, means for limiting the stroke of the auxiliary piston and so constructed that it allows part of the pressure liquid to enter the space between the auxiliary piston and thmain piston and is retained in order to autoe matically compensate for wear of the friction linings. The embodiment illustrated in Fig. 1 comprises a slave cylinder 1 provided with a groove for a stop member 7 which is arranged inside a groove in auxiliary pistons 4, 14 which are provided with slots which correspond with each other as indicated in Fig. 2, so that the pistons 4, 14 are shown apart from each other to a maximum extent, as defined by the axial width of the groove. A spring 6 is provided between the two auxiliary pistons urging them apart. Each of the auxiliary pistons is provided with a cup-shaped packing collar 5 which has an axial projection making contact with the main or working piston 2. In operation, liquid is forced from the central portion of the cylinder 1 through passages in the auxiliary pistons 4, 14 past the lips of collar 5 and into the spaces between the pistons 2 and the collars 5 to operate the brake shoes through thrust members 9. On release of the brakes the pistons 2 are pushed back, due to the pressure decrease inside the slave cylinder 1, and the movement is transferred to the packing collars 5 and the auxiliary pistons 4, 14 until movement is limited by the stop member 7. When wear of the brake shoe linings occurs, the clearance is automatically taken up by the fact that extra liquid enters the space between the pistons 2 and the collars 5 and is prevented from escaping on release of the brakes by virtue of the lips provided on the collars 5. A modification, to assist in the dismantling of the cylinder, is illustrated in Fig. 4 in which the single stop member 7 is replaced by a set of balls 12 fed into the groove through the liquid supply opening and prevented from falling out during operation by a wire catch member 15.
Patent GB-174766-A (GB)
Title: Improvements in or relating to lathes
IPC: B28B1/48
Filed: 1920-11-06
Abstract: 174,766. Bullers, Ltd., and Harris, G. H. Nov. 6, 1920. Turning.-A turning or boring attachment for a lathe particularly applicable to the working of plastic materials such as are used for making insulators comprises a number of tool-holders 5 adjustably carried on a plate 4 secured to a bar which is mounted in bearings 2 on a frame 1 and is rotatable in a sleeve 10 moved axially by rack-andpinion gearing by a handwheel 15. The bearings 2 are square in crosssection and coact with squared portions 3 on the bar to hold the latter stationary during working. In operation, the first tool 6 is advanced until the work is bored to the required depth. The bar is then withdrawn until its circular portions lie within the bearings, whereupon the bar is rotated to position the next tool. Any number of tools may be employed, the bar and its bearings being correspondingly modified.
Patent GB-1433215-A (GB)
Title: Granular magnesia useful as electrical insulator
IPC: C04B35/04
Filed: 1973-07-02
Abstract: 1433215 Magnesia product NORTON CO 2 July 1973 [3 July 1972] 31519/73 Heading C1J A granular magnesia product is made by fusing magnesia in the presence of from 10 to 45 wt. per cent of additives comprising at least alumina, silica or lime or a mixture thereof and then air quenching the molten magnesia in a compressed air stream to produce solidified spheres at least 40% of which are smaller than 35 Tyler mesh, crushing the remainder of the larger sized spheres to pass through the 35 Tyler mesh screen and mixing uniformly the crushed air quenched spheres and uncrushed air quenched smaller spheres. In examples mixtures of magnesite, alumina, silica together sometimes with lime were fused, the fused mixtures being formed into droplets by passage through an aspirating nozzle. The magnesia product is useful as an insulator.
Patent GB-919807-A (GB)
Title: New ª--pyrone derivatives and processes for the preparation thereof
IPC: C07D311/44
Filed: 1959-09-16
Abstract: The invention comprises amides of the formula <FORM:0919807/IV (b)/1> (wherein R1 is an alkyl or aryl group and R2 is hydrogen, or R1 and R2 are joined to form a fused benzene ring which may be substituted by one or more halogen atoms or hydroxy or alkyl groups, R3 is an alkyl or alkenyl radical of at most 12 carbon atoms, an aralkyl group, an aryl group substituted by one or more halogen atoms or hydroxy or acyloxy groups, or a pyridyl group, and R4 is hydrogen, or R3 and R4 are joined to form together with the adjacent nitrogen atom a piperidino, 1-pyrrolidinyl or morpholino group) and, their preparation by (1) heating a corresponding alkyl ester with the appropriate amine NHR3R4; or (2) when R4 is hydrogen, heating a corresponding 3-unsubstituted-4-hydroxy-a -pyrone with an appropriate isocyanate or azide R3NCO or R3CON3.  n - Heptyl - isocyanate is prepared from n-heptylamine hydrochloride and phosgene.
Patent GB-215795-A (GB)
Title: Improvements in or relating to variable pitch propellers
IPC: B64C11/36
Filed: 1923-02-07
Abstract: 215,795. Heath, S. Aug. 9, 1922, [Convention date]. Screw propellers.-Relates to variable-pitch propellers in which the adjustment is effected by gearing upon the application of brakes to drums normally rotating with the propeller, and consists in providing a pair of oppositely disposed brake shoes for each drum. Means are provided for equalizing the pressure of the shoes. The blades 13, Fig. 2, are adjusted by pinions 16, 17 acting on internal pinions on the blade roots, the pinions being driven by worm gears 22, 20 and 23, 21 from shafts actuated by spur gearing, the first elements of which are carried by the bosses 31, 34 of the two brake drums 33, 35 respectively. The drums are arranged in a casing 40 and are each adapted to be engaged by radially movable opposed shoes 41. The shoes are guided by spring-controlled rods 43, Fig. 3, and are moved by rods 42 under the action of rockers 47 on shafts 46. Each shaft at its upper end is connected to a rod 48, Fig. 5, the two rods 48 being pivotally coupled to an equalizing yoke 50, which is moved to and fro by the handcontrolled rod 51. Movement of the rod results in engagement of one of the pairs of brakes with a consequent increase or decrease in the pitch of the blades according to which pair is actuated. Specification 202,270 is referred to.
Patent GB-436328-A (GB)
Title: Improvements in brake mechanism for trailer vehicles
IPC: G01C3/12
Filed: 1934-11-05
Abstract: 436,328. Trailer brakes. BLEICHERT-TRANSPORTLAGEN GES., 15, Bleicherstrasse, Leipsic, Germany. Nov. 5, 1934, No. 31746. Convention date, Nov. 6, 1933. [Class 103 (i)] Brake-operating mechanism for trailers having buffer spring d between a collar l on the drageye of the draw-bar and a guide k fixed to the trailer comprises a normally stressed spring e within the buffer spring adapted to actuate a sleeve f connected to the brakes when released by a manually operated pawl g. A spring c is arranged between a collar i on the trailer and the collar l. The brakes are also applied if the trailer over-runs the tractor.
Patent GB-1560482-A (GB)
Title: Portable reflectometer
IPC: G01N21/47
Filed: 1975-07-30
Abstract: Reflectometer for measuring the optical reflecting power of specimens by comparative measurement between the reflecting power of a reference object and the specimen to be measured. In order to keep low the supply of power to the light source required for this purpose, use is made of a pulse discharge tube (T) whose flash discharge is produced by the discharging of a capacitor (C2). A time-delay circuit leaves the digital display device which displays the measured values switched on only for a short, but adequate, read-off time. The power consumption of the reflectometer is reduced by the fact that a small storage battery suffices as voltage source, and the reflectometer therefore has a low weight, which enables it to be carried. <IMAGE>
Patent GB-846139-A (GB)
Title: Driving mechanism for washing machines
Inventor: DIJKSHOORN HENDRIK JACOBUS
IPC: D06F13/02
Filed: 1957-10-14
Abstract: 846,139. Washing-machines. ENKES N.V. Oct. 14, 1957, No. 31970/57. Class 138 (2). A driving mechanism for a reciprocating agitator comprises a casing in which one toothed wheel of a motor-driven gearing has a pin slidable in a slot at the end of a reciprocating rack bar which meshes with a drive gear on the agitator shaft, characterized in that the rack bar is of T-section and its cross-piece is in a rectilinear slot open at the front in one part of the casing and closed in by the other part of the casing. As shown, a two-part casing 13, 21 houses a driven shaft 23 to which is attached a gear-wheel 22 driving a second gear-wheel 19. The latter has an outwardly projecting eccentric pin 18 which engages, by way of a bushing 28 within a slot 17 in a T-sectioned rack-bar 16, rotation of gear-wheel 19 thereby causing reciprocation of rack-bar 16. The teeth on rack-bar 16 engage gear-wheel 15 and cause the agitator shaft 17 to rotate alternately in opposite directions on its bearings 14.
Patent GB-410176-A (GB)
Title: Improvements relating to excavators
IPC: E02F3/30
Filed: 1932-11-11
Abstract: 410,176. Excavators. DEMAG AKT.- GES., 64, Werthauserstrasse, Duisberg, Germany. Nov. 11, 1932, No. 31983. Convention date, Nov. 12, 1931. [Class 68 (i).] In a scoop-arm excavator lifting, lowering, advancing, retracting, slueing, and opening of the shovel are all controlled by two hand levers and two foot levers, one hand lever at least having movement about two relatively inclined axes. The hoisting rope 7 passes from a drum 6 by pulleys 8 to the larger periphery of a stepped drum 10 on the shaft of the racking pinion 10<a>; from the smaller periphery, a tail rope 11 passes to a drum 12 coaxial with the drum 6. Foot levers B, C, Fig. 3, control brakes 44, 47, on the hoisting drum 6 and slueing gear respectively. A lever D acts through rods or through a valve 36 and pressure cylinder 37 to control the drive clutch 35 of the hoisting drum 6. A lever A, Fig. 2, is movable about axes 14, 30, at right angles to each other, movement about axis 30 acting through lever 31 to control the drive for slueing the superstructure 2, Fig. 1. As regards axis 14, when the lever A is in midposition, a brake 21 is applied to the drum 12. Movement of the lever A to the right in Fig. 2, effects release of the brake 21 through rod 15, and cranks 16, 18, a pull on the rope 7 then racking the scoop arm forwardly, while when the lever A is moved to the left, the brake is similarly released and in addition, through crank 22 rod 23, lost-motion connection 23<a> and lever 24, a valve 25 admits fluid to a cylinder 27 and thereby, through bell crank 28, applies a clutch 29 to drive the drum 12, so racking the scoop arm backwardly. A hand grip 33 is carried by either lever A or D and acts through a valve 34 and fluid pressure connections, or through rods, to apply a clamp 39 to a weighted rope 40 connected to the latch mechanism of the scoop door 41; on racking the scoop forwardly, the door is opened for dumping. The Specification as open to inspection under Sect. 91 states also that the controls are applicable to excavators of the grab, skimmer and drag line types, lever A controlling the hoisting means in a drag line excavator while lever D controls the drag line. This subject-matter does not appear in the Specification as accepted.
Patent GB-1106684-A (GB)
Title: Improvements in electric arc welding
Inventor: BOUGHTON PETER
IPC: B23K9/09
Filed: 1964-08-06
Abstract: 1,106,684. Arc welding systems. BRITISH OXYGEN CO. Ltd. 20 July, 1965 [6 Aug., 1964], No. 32023/64. Heading H2. [Also in Division B3] In a consumable electrode gas shielded arc welding system having a base power supply 10 for maintaining the arc and pulsed supply 20 for metal droplet transfer, a choke 20 normally unsaturated at the base supply is provided to stabilize the current and to prevent arc extinction. The choke is saturated by the pulses and may have a small air gap. A capacitor 44 may be connected as shown.
Patent GB-358745-A (GB)
Title: Improved manufacture of cyanates and cyanides of alkali metals
IPC: C01C3/14
Filed: 1930-10-24
Abstract: Alkali metal cyanates are obtained by the reaction of an ammonia-carbon dioxide mixture upon alkali oxides or oxide-forming compounds, that is compounds which yield oxide when heated such as carbonates and hydroxides at temperatures of 400-800 DEG  C. and at ordinary or elevated pressure; by adding carbon to the raw material cyanides may be produced.  Substances which facilitate the reaction such as halides or cyanates may be admixed with oxides or the like. The presence of metals which promote the decomposition of ammonia should be avoided the reaction chamber being lined with ceramic material.  The ammonia-carbon dioxide mixture may be passed over catalysts, preferably those having an imide-forming or water-removing action, before it reacts with the oxide or oxide-forming compounds. The catalysts referred to are copper, manganese and their alloys, silver, aluminium oxide, active charcoal and wood charcoal. Alternatively these catalysts may be applied as a lining to the reaction chamber or they can be mixed with the oxides or oxide-forming compounds or embedded therein in layers.  Gaseous mixtures containing ammonia may be used instead of ammonia and gaseous mixtures containing carbon dioxide, for example carbon dioxide admixed with hydrocarbons, may be used instead of carbon dioxide.  It is preferable to regulate the rate of flow of the ammonia-carbon dioxide mixture so that the water vapour content of the outgoing gases remains below a certain limit; for a reaction velocity of \ba1/10\be gram-molecule of ammonia a combined per gram molecule equivalent of metal oxide per hour this water vapour content should not exceed 4 per cent and is preferably 2 per cent.  The water vapour content of the outgoing gases should not however be substantially below 1 per cent.
Patent GB-1253579-A (GB)
Title: Improvements in or relating to drive mechanisms
IPC: F16H47/08
Filed: 1969-06-25
Abstract: 1,253,579. Change-speed control. FICHTEL & SACHS A.G. 25 June, 1969 [28 June, 1968], No. 32126/69. Heading F2D. An hydraulically engaged friction clutch 2, by-passing a torque-converter 25 in the drive from an engine 26 to the change-speed gear 30 of a motor vehicle is engaged only in predetermined settings of the gate-guided manual shift-lever 14 of the change-speed gear. Thus in 3, 4, 5 and 6 speed-settings the shift-lever 14 closes one of a number of parallel switches 17 to energize a solenoid 31, operating a valve 18 to supply pumped oil 22 to a clutch-engaging piston 6 and exhaust the torque-converter, this condition being reversed in other settings. One or more manual switches 35 provides disablement of the by-pass clutch 2 in one or more ratio-settings, and a series switch 13 is opened by the usual engine-driven governor 12 of the engine fuel injection pump 36 at speeds below engine idle, to release the by-pass clutch 2 to prevent engine stall. Separate valves and solenoids for the converter 25 and clutch 2 may replace the single valve 18. A separating clutch 8 between the converter 25 and changespeed gear 30 is actuated by the shift-lever 14 by means not described.
Patent GB-618176-A (GB)
Title: An improved animal trap
IPC: A01M23/26
Filed: 1946-10-30
Abstract: 618,176. Animal trap. CLARK, F. L. Oct. 30, 1946, No. 32258. [Class 5 (i)] The jaws A, B are pivoted on a cross piece D at right angles to the base C and are engaged by holes in the leaf springs E at the opposite ends to those at which the springs are anchored to the cross piece D. The jaws are held back in their set position by a detent G which is disengaged b y pressure on the bait platform F. The jaw-sides are inclined inwardly from their pivots and are bowed.