baber/WOPTO huggingface dataset:
Patent GB-822302-A (GB)
Title: Improvements in or relating to hoeing implements or machines
IPC: A01B1/16
Filed: 1956-08-10
Abstract: 822,302. Hoes. McKEE, J. Aug. 9, 1957 [Aug. 10, 1956], No. 24562/56. Class 6(1). A hoeing implement comprises a frame 3 supporting a drum or barrel 1 having polygonal end plates 11 joined by blades 8 spaced on the circumference of the members 11 and adapted to act consecutively on the ground as the drum is rotated, the frame 3 being fitted with a cutter bar 7 and having means connected thereto for supporting tines 2 or other implements, e.g. ploughs or ridgers. The drum 1 is carried on a spindle 5 mounted in the ends of the frame 3. The cutter bar 7 may be swung into its operative position, Fig. 2 (not shown), by pivoting the frame 3 about its spindle 5. The blades 8 may have plain or serrated edges or be formed into teeth or prongs which penetrate the soil. Alternatively fixing holes are provided in each blade for attaching a subsidiary blade having serrations, teeth, Fig. 3 (not shown) or spikes, Fig. 4 (not shown). The blades 8 may be either welded to the plates 11 or detachable. The device may be propelled by an I.C. engine.
Patent GB-718851-A (GB)
Title: Process for preparing resinous products and the resulting products
IPC: C08G59/18
Filed: 1952-10-01
Abstract: Curing agents for hardening the glycidyl ethers of polyhydric phenols are prepared by reacting with a fatty acid to form a salt a curing agent as claimed in Specification 705,786 prepared by reacting such a glycidyl ether having 1-2 epoxy groups per molecule with at least 1.5 mols. per epoxy group of a secondary amine containing a single nitrogen atom linked to two different carbon atoms.  Salt formation may be effected in solution e.g. in dioxane or diethyl ether.  The fatty acid may be saturated or unsaturated and should contain 2-12 carbon atoms.  For hardening glycidyl ethers sufficient secondary curing agent is preferably added to give 0.1-4 per cent. of nitrogen in the composition. The mixture may be made at raised temperatures, e.g. 40 DEG C. or with a solvent which may then be evaporated at a temperature below 50 DEG C.  Hardening may be effected at temperatures above 65 DEG C. Pigments, fillers, plasticizers and other resins may be included in the compositions to be hardened.  In the examples a glycidyl ether prepared from 2, 2-bis (4-hydroxyphenyl) propane and epichlorhydric was used to prepare the curing agent and as the ether to be cured.  The amine used was in each case dimethylamine and the fatty acid used for salt formation was acetic acid. Specifications 691,543 and 718,850 also are referred to.ALSO:Curing agents for glycidyl ethers of polyhydric phenols (see Group IV (a)) are prepared by forming fatty acid salts of curing agents prepared by reacting a glycidyl ether of a dihydric phenol, having an average number of epoxy groups between 1.0 and 2.0, with a secondary amine containing a single nitrogen atom which is linked to two different carbon atoms, in such a proportion that at least 1.5 mols. of the amine are present per epoxide group in the glycidyl ether as claimed in Specification 705,786.  The fatty acids may be saturated or unsaturated and preferably contain 2-12 carbon atoms. In an example excess dimethylamine was bubbled through a solution in dioxane of a glycidyl ether of 2,2-bis-(4-hydroxyphenyl) propane.  An adduct was formed which was probably the di-(3-dimethylamino-2 hydroxypropyl) ether of 2,2-bis-(4-hydroxyphenyl) propane.  Glacial acetic acid was added to form the acetate from which the dioxane was then evaporated in vacuo.  Specifications 691,543 and 718,850, [both in Group IV (a)] also are referred to.
Patent GB-909315-A (GB)
Title: Pneumatic tires
IPC: F16C31/04
Filed: 1960-07-15
Abstract: 909,315. Pneumatic tyres. FIRESTONE TIRE & RUBBER CO. July 15, 1960 [Aug. 7, 1959], No 24710/60. Class 144 (2). A pneumatic tyre having a carcase of one or more rubberized parallel cord plies 11, which may be of metal cords extending radially, has a crown reinforcement of at least three plies 17, 18, 19, two of which, 18, 19, comprise crosslaid rubberized parallel metal cord plies and the other, 17, of which comprises rubber reinforced with fibres f, of textile or mineral material other than metal, which are oriented in a direction at an angle to the cords of each of the two plies 18, 19. The cord plies 18, 19 may each have a cord angle of 10 to 30 degrees to the circumferential, and the ply 17 may have a fibre orientation of 0 to 20 degrees or 60 to 90 degrees to the circumferential. Two such plies 17 may be used, in which case their fibres may be respectively oriented at 0 and 90 degrees to to the circumferential. The fibres may be of nylon ranging in denier from 1¢ to 6, in length from 1 to 1 inches, and in weight from 2 to 5 % of the ply. Alternatively, fibres of glass, natural or synthetic textiles, polypropylene or polyethylene may be used. The ply 17 may be positioned above or between the plies 18, 19 or below or between the carcase ply or plies.
Patent GB-463796-A (GB)
Title: Improvements in or relating to rack and pinion gearing more particularly for excavating machines
IPC: E02F3/30
Filed: 1935-09-05
Abstract: 463,796. Rack -and - pinion gearing. MARSHALL, L., and RUSTON-BUCYRUS, Ltd. Sept. 5, 1935, No. 24720. [Class 80 (i)] In rack-and-pinion gearing of the type in which the rack moves between predetermined limits, the rack carries a buffer which engages an abutment at the end of the travel of the rack and shock is absorbed by relative movement between the rack and the thrust member of the buffer.' In the form shown, the rack b, which operates the dipper arm a of an excavating machine, has a reduced end portion b<1> carrying a slidable piece f having a boss j bearing on a spring k contained in a casing m on the arm a. When the arm a moves to the right to its extreme position, the piece f abuts against the shrouds h on the driving pinion c and is stopped, but the arm a, rack b and the casing m of the spring k continue to move until the spring is compressed, so that these parts are gradually brought to rest. Instead of the spring k, a buffer comprising layers or discs of rubber or metal may be employed.
Patent GB-585009-A (GB)
Title: New or improved hand sweeping or spreading appliance
IPC: A01B1/24
Filed: 1944-12-11
Abstract: 585,009. Brushes. CHAPMAN, G. Dec. 11, 1944, No. 24748. [Class 19] A device for sweeping worm casts &c. from lawns or for spreading powdered substances consists of a length of steel tubing about nine feet long and thin enough to be whippy at the end, formed of two or more tapered sections and provided with a long wooden handle. The tubing preferably is copper-coated and of 21 I.W.G., and may be tapered from #" at the thicker end to #" at the thinner end. Liquid may be fed through the bore of the tubing.
Patent GB-1469859-A (GB)
Title: Method and a device for the production of mouldings and more especially of magnetised ferrite mouldings
IPC: H01F1/36
Filed: 1974-06-05
Abstract: 1469859 Compression moulding ceramic material DORST-KERAMIKMASCHINEN-BAU OTTO DORST UND DIPL-ING WALTER SCHLEGEL 5 June 1974 [7 June 1973] 24930/74 Heading B5A An aqueous suspension of ceramic particles is pumped into the space K above a punch 2 via a duct 9, valve V and ducts 11, 20 a space 14 bounded by a deformable wall 16 is also supplied with the suspension via a duct 13. With the spaces filled, the valve V is closed and a piston 18 raised causing pressure fluid to act on the deformable wall which pressurizes the suspension in the space K causing the liquid of the suspension to escape through holes 8. The punch is then raised to compact the particles; during such movement the inlet 20 is closed by the punch. Magnetizing coils 6, 7 effect an appropriate particle alignment when producing magnetized ferrite mouldings. Alternatively the die containing the space K is moved downwardly, and the punch is stationary.
Patent GB-939027-A (GB)
Title: Photo-electrically controlled switching apparatus
IPC: H01J17/04
Filed: 1960-07-18
Abstract: 939,027. Electric measuring instruments. P. GOSSEN & CO. G.m.b.H. July 18, 1960 [July 18, 1959], No. 24949/60. Class 37. [Also in Groups XXXVIII and XL (c)] Apparatus for switching warning or control signals when an electrical quantity reaches a prescribed limit or limits comprises a meter movement with shutters affixed to the pointer so as to obscure photo-cells situated at those positions on its travel corresponding to the limits, the photo-cells being connected to valve circuits controlling the switching relays. A stepped annular mask 24 and arcuate shutters 22 and 23 mounted on an instrument pointer 21, throw shadows 26, 27, in the path of light from a lamp 25 to photo-cells 2 and 4. A circuit connected to the photo-cells provides for a contact 5b to connect terminals 6 and 8 of an external circuit if the pointer is over a portion denoted as " blue " of a scale 3 and to maintain this connection until the pointer reaches a zone of the scale marked as " red," whereupon the contact 5b operates to switch the connection of terminal 6 to terminal 7, this connection being maintained until the " blue " zone is again reached. Another embodiment forms apparatus to operate a warning signal where a limit is reached, it being impossible to switch off the warning manually until the measured value is again within limits. Other embodiments use different circuit connections involving transposition of the connections of the two photocells from that shown, with corresponding transposition of the relays.
Patent GB-322218-A (GB)
Title: An improved stopper for bottles and the like
IPC: B65D39/12
Filed: 1928-08-30
Abstract: 322,218. Armstrong, D. S. Aug. 30, 1928. Closures completed by outstanding packing-rings. - A stopper for bottles &c. comprises a hollow resilient body portion 1, and a plug 2 mounted on a screwed pin 6 and adapted to ride up and down the pin to contract or expand the body portion, the pin 6 being secured to a base 7 carried in the hollow portion 1. The base 7 may be square or be provided with projecting fins to prevent the screw from being rotated in the hollow portion 1 and the plug portion may carry a knob 5 or be perforated as at 9 for the reception of a wire &c. by which it may be turned.
Patent GB-920317-A (GB)
Title: Blowing device for supplying the refining agent in top-blowing processes
IPC: C21C5/46
Filed: 1961-07-10
Abstract: 920,317. Refining steel. VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE A.G. July 10, 1961 [July 11, 1960], No. 24979/61. Class 72. A blowing device for a top blowing refining process comprises a U-shaped lance having a straight end portion mounted on a carrier capable of vertical adjustment, the carrier being movable on an arcuate path and the lance pivotable into and out of the converter vessel when the carrier is at the top of the arcuate path. As shown, a lance 2 having a straight end portion 3 is mounted on a carrier 5 which may travel vertically along a thread 6. The carrier 5 is mounted on a carriage 12 connected to a support 14 fixed to the converter wall by two pivot links 13, 13<SP>1</SP>, movement of the carriage along an arcuate path 15 allowing the lance to be moved into and out of the converter when the carriage is at the top of the arcuate path.
Patent GB-569875-A (GB)
Title: Improvements in and relating to safety razors and blades therefor
IPC: B26B21/40
Filed: 1943-12-08
Abstract: 569,875. Wrapping razor blades. HEIDE, H. C. (Gillette Safety Razor Co.). Dec. 8, 1943, No. 25035/44. Divided out of 569,868, [Group XIV]. [Class 94 (i)] [Also in Group XIV] A thin slotted razor blade is provided with a wrapper which may be withdrawn endwise after the wrapped blade is inserted in the razor. The wrapper comprises a sheet 5, Fig. 2, with a slot 8 which, after the sheet is folded along the line A-A which may be weakened or perforated, forms an open-ended slot exposing the open-ended slot 1a, Fig. 1, in the razor blade. Side parts 10 on one leaf of the sheet are then folded over a tongue 9 on the other leaf. The leaves may be kept flat against the blade by an adhesive. The wrapped blade is particularly for use with a razor constructed as described in Specification 569,868.
Patent GB-702895-A (GB)
Title: Improvements relating to tined cultivators
Inventor: SHICKLE HARRY THOMAS
IPC: A01B35/22
Filed: 1952-10-07
Abstract: 702,895. Agricultural implements. MONRO, Ltd., G Oct. 7, 1952, No. 25135/52. Class 6 (1) A tined cultivating implement fitted with a tine shaft or beam 1 is characterized in that a set of tines 5 each having an attachment end 6 are each arranged to pass, through a, slot 2 in the shaft 1 and are attached to two lugs 3 on the shaft by means of a pin 9 which is locked by means of a locking ring 11 or split pin which passes through the pin 9 and one of the lugs 3. the invention is designed primarily for implements having a rotary tine shaft but is applicable to cultivating implements wherein tines are mounted on a fixed beam.
Patent GB-1098477-A (GB)
Title: Voltage indicating devices
Inventor: PLUMMER CLIFFORD ARTHUR
IPC: H02J7/14
Filed: 1965-06-15
Abstract: 1,098,477. Keyed oscillators. ELECTROLOID Ltd. June 7, 1966 [June 15, 1965], No. 25194/65. Heading H3T. [Also in Divisions G1 and H2] A circuit arrangement for indicating when the voltage applied to terminals 50, 51 falls to a predetermined value comprises a Schmitt trigger circuit which includes transistors 56, 60 so arranged that with normal voltage at the terminals 50, 51 transistor 60 is conductive and transistor 56 non-conductive. When the voltage at the terminals 50, 51 falls to the predetermined low value, the voltage at the slider of a potentiometer 68 is insufficient to maintain transistor 60 conductive, thus causing the transistor 56 to become conductive. Conduction of this transistor causes the potential across resistor 55 to change, the change being fed over a capacitor 55 to a loud speaker coil 76 and a winding of a transformer 65. The voltage induced in the other transformer winding is fed, by way of a capacitor 64, to the base of the transistor 56 thereby setting up an oscillatory circuit the oscillation frequency being determined by capacitor 64, resistor 62 and, to some extent, by the tapped winding of the transformer 65. Furthermore, the voltage across this winding, rectified and smoothed by diode 74 and capacitor 73, acts to hold transistor 60 non-conductive in the event of a voltage rise from the predetermined value. In order to reset the circuit it must be disconnected from the applied voltage.
Patent GB-641209-A (GB)
Title: Improvements in chairs
IPC: A47C7/58
Filed: 1948-09-28
Abstract: 641,209. Resilient mountings for seats. NYSTROM, K. G. Sept. 28, 1948, No. 25266. [Class 52 (i)] In a chair comprising a back rest, seat, and a supporting frame particularly suitable for theatres &c. the seat is supported on the frame by a substantially centrally positioned member including an element of rubber &c. to enable the seat to give and change its slope when the occupant changes the position of his body. As shown, as applied to chairs arranged in rows the supporting frame 11 comprising legs 12, 13 and a floor plate 15 has secured thereto a square sectioned tube 10 and the centrally positioned member comprises a hinge one part of which forms a sleeve 20 which is threaded on to the tube 10 and secured in any suitable position. The other member of the hinge comprises two portions one portion 21 being mounted on the hinge pin 18 and the other portion 22 being secured to the seat plate 23. Between the two portions 21, 22 is an intermediate element 24 of rubber &c. which is held compressed by a bolt 25. The back frame comprises a U-shaped tubular member the lower end of which is bent upwardly and forwardly terminating in sleeves 29 which are threaded on to the tube 10 and there secured. At each side an arm rest 31 forming a tubular closed loop which is welded to a sleeve likewise threaded on to the tube 10. The tube 10 is supported by leg frames at widely spaced points. In a modification the upper part of the hinge may be formed as an integral block of rubber which is secured to the seat plate.
Patent GB-436413-A (GB)
Title: Improvements in or relating to electric discharge devices
IPC: H01J61/42
Filed: 1934-09-03
Abstract: 436,413. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London. - (Patent - Treuhand-Ges. fur Elektrische Gl³hlampen, 11, Ehrenbergstrasse, Berlin) Sept. 3, 1934, No. 25321. [Class 39 (i)] Lamps in which luminescent material is excited by ultra-violet radiation from a mercury-vapour discharge are operated at a frequency exceeding 10<6> cycles per second and at a current density of the discharge below 10 milliamps. per sq. cm., so that the luminescent light is not modified by visible light from the discharge. The vapour pressure of the mercury is below À01 mm. and neon or argon may be added at a pressure of a few mm. The fluorescent material may be inside or on the envelope or between double walls of the discharge tube or may be on screens associated with the envelope or within a fitting housing the tube, the envelope being transparent to ultra-violet radiation. The electrodes of the tube may be external or internal and in the latter case may be thermionic. Colour filters may be added.
Patent GB-997847-A (GB)
Title: Improvements in or relating to devices operated by contact with water such as survival equipment
Inventor: BASNETT JAMES THOMAS
IPC: B63C9/18
Filed: 1963-06-26
Abstract: 997,847. Compressed gas discharge devices. G. Q. PARACHUTE CO. Ltd. June 22, 1964 [June 26, 1963], No. 25334/63. Heading F4P. Discharge of compressed gas, e.g. carbon dioxide from a container 11 connected at 12 to a life jacket or inflatable raft is effected by removing a valve slug 18 connected by a line 17 to a plunger 14 when the latter is fired from a gun 13 connected to battery cells 21 which become energized on immersion in water. Firing may be delayed by short-circuiting the detonator through a tie 27 on the anchored portion 25 of a separable connector until such time as the other portion 23 which is secured by a line 24 to the jacket is separated from portion 25, thus breaking the short circuit. The plunger 14 may be withdrawn manually by a pull cord 16.
Patent GB-227196-A (GB)
Title: Apparatus for the extraction of particles from gas streams
IPC: B01D45/08
Filed: 1923-10-11
Abstract: 227,196. Carty, M. W. Oct. 11, 1923. Dust collectors.-A dust and cinder separating element comprises a long, narrow, and deep compartment closed at the top and one end and open at the bottom and the other end, the cinder-laden gas entering at the larger open end and proceeding to the smaller closed end, the solid matter being deflected downwards while the cleaned gas flows upwards at the sides. Fig. 1 shows such an element. Fig. 2 shows an arrangement of separators in the smoke uptake of a boiler furnace, the horizontal passages of the two sets of separators being closed by a common plate 30 by which the dust &c. is deflected into a pair of hoppers 35 having pipes 40 leading to a collector 41. The gases rise around the side walls 10<a> of the separators, each set of which extends from a common passage g, h. Fig. 7 shows a modified arrangement of separators under the last pass of a water tube boiler, the top walls 10 of the separators sloping downwards and the lower edges of the side walls being horizontal.
Patent GB-1246349-A (GB)
Title: Isomerisation of unsaturated carboxylic acids and their derivatives
IPC: C07C51/353
Filed: 1969-05-19
Abstract: 1,246,349. Isomerization of carboxylic acids and derivatives. BALM PAINTS Ltd. 19 May, 1969 [20 May, 1968], No. 25423/69. Heading C2C. Cis-compounds of formula wherein R 1  is a carboxylic or carboxylic ester group, R 2  is H, Cl or CH 3  and R 3  is a substituent which with the adjacent ester carbonyl forms a carboxylic acid ester or amide group, are isomerized to the corresponding trans-compound by heating with at least 0À1% by weight of an inert dipolar aprotic liquid at a temperature below the thermal decomposition temperature. The aprotic liquids are listed in classes, carboxylic acid amides, cyclic lactams, stable acylated cyclic secondary amines, substituted phosphoramides and phosphonamides, carbonic acid amides, sulphoxides and N-oxides of aromatic tertiary amines, and the compounds used in examples are N,N-dimethyl formamide, N,N-dimethyl acetamide, dimethyl oleamide, N,N-dimethyl aceto-acetamide, N-methyl pyrrolidone, tetramethyl urea, dimethyl sulphoxide and pyridine N-oxide. Maleic, mono-chloromaleic, citraconic acids, esters and ester-acids may be isomerized.
Patent GB-1253638-A (GB)
Title: Circuit arrangement for a pulse-controlled connection of a telecommunication signal source to a telecommunication signal load
IPC: H04Q3/52
Filed: 1970-05-27
Abstract: 1,253,638. Semi-conductor gating circuits; marker controlled switching networks. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 27 May, 1970 [30 May, 1969], No. 25482/70. Headings H3T and H4K. A circuit for pulse-controlled connection of a signal source to a load, comprising a controlled semi-conductor device KA111, Fig. 3(c), e.g. an SCR or equivalent transistor pair 30, 31, is characterized in that the control circuit includes an element whose differential resistance is low for low value control currents and high for high value control currents Fig. 4(a) (not shown). The element, comprises a first transistor TA111 and a second transistor SA111, the latter constituting a constant current source. The circuit may be employed as a matrix switch in a telecommunications system, Fig. 5. If a +30V marking signal is applied by switch 61, application of a marking pulse to, for example, terminal MB1 switches element TCr1n to its low resistance state, and fires thyristor KCr1n. Once the thyristor is fired, the element again becomes high resistance so that further marking pulses do not influence the circuit. The element is similarly high resistance in the case of circuits to which +30V marking signal is not applied.