baber/WOPTO huggingface dataset:
Patent GB-599194-A (GB)
Title: Adjustable chair seat
IPC: A47C3/026
Filed: 1945-01-15
Abstract: 599,194. Seats. DEHN, F. B. (Automatic Products Co.). Jan. 15, 1945, No. 1186. [Class 52(ii)] A pedestal type support for a seat has a fixed bearing mounted in the top of the pedestal, a guide box adapted to rotate in the bearing, and a seat-carrying slide assembly mounted on rollers on the guide box, the guide box being automatically locked against rotation except when the seat is fully retracted, and the seat-carrying slide automatically locking in position when fully extended. A spindle 17, rotatably held in the fixed bearing 11 by a set screw 19 engaging in an annular groove 18, has fixed to it the guide box 20 which comprises a top plate 21, a lower plate 22 and parallel side plates 23 spaced inwardly from the edges of the guide box to form tracks for rollers 43 carried on stud shaft 42 on side arms 39 which depend from a plate 38 and have secured to them spiders 40 which carry the seat S. The plate 38 is about half the length of the guide box and limits the sliding movement of the seat by abutting against upturned portions 45 and 46 of the top plate 21. A locking lever 29 carried on a pivot pin 31 has at one end a dog 34 guided by a bracket 36 through a slot 35 in the plate 22 and fitting in a notch 13 in a cap 12 on the bearing 11, thus normally holding the guide box against rotation, and at the other end a cam surface 32 which, whenever the seat is in the fully retracted position, is pressed down by the plate 38 against the action of a spring 33 and lifts the dog 34 to permit rotation of the guide box. On rotation, a lug 28 on the lower plate 22 moves a projecting end of a coil spring 27, the other end being held by a projecting pin 14 on the cap 12, the rotation being arrested after 90 degrees by abutments (not shown). In the fully extended position a spring 49 urges a finger 48 to overlap the upturned portion 45 and prevents withdrawal of the seat until a lever 47, loosely connected to the plate 38 by nuts 52, is lifted.
Patent GB-250148-A (GB)
Title: Improvements in instruments for measuring angles
IPC: B43L13/00
Filed: 1926-01-15
Abstract: 250,148. Tresidder, T. J. Jan. 15, 1926. Protractors. - An adjustable angle-gauge or protractor comprises a base a which is recessed to receive a pivoted slotted arc c to which is secured a wedge b in such a manner that the apex of the wedge and the axis of the pivot d are in one line lying in the plane of one edge of the base. The wedge and the base provide two members the angle between which can be varied, while the front and back surfaces of the one always lie in the same planes respectively as the front and back surfaces of the other. The pivot member d is let into the upper edge of the base and is machined with it, see Fig. 2, so as not to interrupt the continuity of either of the two angularly-disposed surfaces. The wedge b bears behind the standing part of the pivot and retains the are c in close contact with the base. The are can be clamped by a screw g. An attachment k, Fig. 5, may be fixed to the base by a screw l for testing internal angles.
Patent GB-625968-A (GB)
Title: Improvements in and relating to permeability tuned radio receiver circuits
IPC: H03J3/06
Filed: 1946-01-14
Abstract: 625,968. Transformers. BRITISH THOMSON.HOUSTON CO., Ltd. Jan. 14, 1946, No. 1240. Convention date, Jan. 19, 1945. [Class 38 (ii)] [Also in Group XL (c)] A permeability tuned transformer for use in a radio receiver (see Group XL (c)) comprises a primary winding 2 overwound to the same length as the secondary winding 7, which is tuned by the powdered-iron core 8. A tertiary winding 16 of substantially constant inductance is wound adjacent the end of the. winding 7 at which the core 8 enters.
Patent GB-571404-A (GB)
Title: Improvements in and relating to radio receiver circuits
IPC: H03G3/28
Filed: 1944-01-24
Abstract: 571,404. Wireless receiving circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 24, 1944, No. 1314. Convention date, Jan. 30, 1943. [Class 40 (v)] In a transmission channel, two amplifiers connected in cascade are arranged to operate as a multivibrator in the absence of an adequate signal so as to prevent the transmission of noise. Fig. 1 shows the invention applied to eliminating noise when tuning between stations in a frequency modulation receiver in which intermediate frequency energy is fed through cascade limiters 19, 30 to the input winding 14 of a disoriminator. The anode of 19 is resistancecapacity coupled to the grid of 30 while the anode of 30 is connected to the grid of 19 through capacity 40 and resistance 41. In the absence of an adequate input to 19, valves 19 and 30 operate as a multivibrator having a frequency somewhere between the audio and intermediate frequencies. As valves 19, 30 are alternately biassed to cut-off and to anode current saturation, no noise voltages are transmitted through the channel in the absence of a signal. When the signal reappears, the negative' voltage developed across resistor 26 by rectification of the signal, stops the multivibrator action and re-establishes thenormal limiter action. The level at which the multivibrator action commences is determined by adjustment of resistor 41 or condenser 39. In a modification, Fig. 2 (not shown), a network is provided for preventing multivibrator hiss from being introduced into the transmission channel. Also a switch is provided in the feedback circuit to facilitate a comparison of the noise output with and without the multivibrator action. The invention may be applied to any two amplifiers, not necessarily operated as limiters.
Patent GB-857859-A (GB)
Title: Improvements in and relating to the repair of thermoplastic materials
Inventor: DEWAR DOUGLAS
IPC: B29C65/04
Filed: 1957-01-15
Abstract: 857,859. Dielectric heating of thermoplastics. DUNLOP RUBBER CO. Ltd. Jan. 1, 1958 [Jan. 15, 1957], No. 1450/57. Class 39(3). [Also in Groups VIII and XXXIV] A high-frequency electric apparatus for welding patches 10 to thermoplastic sheet material 2 (see Group XXXIV) comprises an anvil electrode 9 carried by a lower arm 4 of the apparatus which is insertable through the aperture 5 to be repaired and into an annular peripheral pocket 15 of the patch 10, and a roller electrode 20 carried by an upper arm 16 which is insulated from, and horizontally pivoted to, the lower arm 4. The arms 4, 16 are spring- urged apart but are movable together to effect welding, the roller 20 having a spring-loaded carbon brush 22 bearing thereon, and the brush and the electrode 9 being connected to a highfrequency source 25.
Patent GB-1440930-A (GB)
Title: Device for wrapping block-like articles
IPC: B65B19/22
Filed: 1973-01-11
Abstract: 1440930 Packaging cigarettes A SCHMER MUND 17 Dec 1973 [11 Jan 1973] 1551/73 Addition to 1440923 Heading B8C In a machine of the type described in the parent Specification 1,440,923 wherein cigarette blocks are successively loaded into the cells 20 of a first stepwise rotatable member I at one station and transferred at another station into the wrapper-holding cells 21 of a second stepwise rotatable member II, which is rotated about an axis parallel to that of the first member successively through various stations to wrap the block in a first wrapper, guide means 16 are arranged at the transfer station and define a guide channel between two aligned cells 20 and 21 through which the cigarette block is pushed on axial displacement of reciprocable pusher 13 through the cell and along the channel. The guide means comprises a rigid element 509 and outwardly yieldable resilient elements 501, 502, 503 and 504 defining a rectangular cross-section guide-channel having a lengthwise extending side slot 515 to accommodate the reciprocable movement of the pusher arm 516. The guide means itself is reciprocable and as shown enters the mouth of the cell and/or wrapper into which the block is transferred. The rigid element 509, Fig. 6 (not shown), may act as a folding guide. The pusher is drivingly coupled with drive of the rotating members so to be forwardly displaced when the members are stationary and retracted when the rotating member I is being indexed to bring the next cell to the transfer station.
Patent GB-787970-A (GB)
Title: Polyoxyethylene ethers for use in hydraulic fluids
IPC: C10M173/02
Filed: 1956-01-17
Abstract: The invention comprises polyoxyethylene ethers of dimeric unsaturated fatty alcohols suitable for use in hydraulic fluids (see Group XXIX). The ethers may be prepared by reacting the alcohols with a preformed polyethylene glycol.  The preferred method, however, is reacting the alcohol with ethylene oxide; products so obtained containing 2-4 ethylene oxide units are oil-soluble while those containing 12-28 or more such units are water-soluble.  Examples describe the condensation of dilinoleyl alcohol with 12, 15, 20 and 28 mols. of ethylene oxide using sodium methylate as catalyst at elevated temperature in an autoclave, the ethylene oxide being added incrementally.ALSO:Polyoxyethylene ethers which are nonflammable and resistant to hydrolytic conversion and are thus suitable as viscosity control agents in hydraulic fluids are obtained by etherification of dimeric unsaturated fatty alcohols with preformed polyethylene glycols or preferably by direct addition of ethylene oxide to the dimeric alcohols.  The dimeric unsaturated alcohols may be obtained as described in U.S.A. Specification 2,413,612 by dimerization of unsaturated fatty acids followed by hydrogenation of the acids to alcohols 200 gs. dilinoleyl alcohol and 1.05 gs. sodium methylate are heated in an autoclave flushed with nitrogen to 140 DEG  C. and ethylene oxide introduced until the pressure reached 50 lb. p.s.i. The exothermic action was allowed to continue until the pressure dropped to 30 lb. p.s.i. whereupon further increments of ethylene oxide were added to make up a total of 320 gs.  According to conditions employed oily liquids containing from 12 oxyethylene groups per mol. upwards were obtained.  A table is given of hydraulic fluid compositions containing water, formamide, ethylene glycol and etherified dilinoleyl alcohol.
Patent GB-126663-A (GB)
Title: Improvements in or relating to Governors for Internal Combustion Engines.
IPC: F02M21/00
Filed: 1917-01-31
Abstract: 126,663. Napier & Son, D., Rowledge, A. J., and Tryon, H. C. Jan. 31, 1917. Regulating. - A governor, particularly for engines used on aircraft, comprises two chambers A, B connected together at their open ends, and gripping in an air-tight manner one end of an airproof diaphragm F, of which the other end is similarly attached to a piston E. The chamber A has a cock C by which it may be connected to the atmosphere when the engine is at the ground level, and the chamber B is always open to the atmosphere through a port B'. Variations in the atmospheric pressure, acting on the lower side of the piston E, move it and so actuate a valve J controlling the quantity or quality of the explosive mixture or the quantity of air or fuel supplied to the engine. Temperature variations in the atmosphere act similarly. The piston may be returned to normal position by hand or by a spring.
Patent GB-395713-A (GB)
Title: Improvements in and relating to piston rings
IPC: F16J9/02
Filed: 1932-01-19
Abstract: 395,713. Piston-rings. BIRCH, G., 22, Meadow Bank Avenue, Sheffield. Jan. 19, 1932, No. 1622. [Class 122 (i).] In a ring of the kind comprising a split ring b housed in the recess of an L-shaped ring a, projections h on the ends of the ring b engage a groove g in the radial abutting face of the ring a whereby relative radial movement of the rings and consequent fouling of cylinder ports is eliminated. An axial projection e may be provided on the ring b to engage a slot c in the radial flange of the ring a and cover the gap d therein.
Patent GB-222819-A (GB)
Title: Improvements in the manufacture of bread flour and bread
IPC: A21D2/36
Filed: 1924-01-21
Abstract: 222,819. Osmundsen, R. Oct. 3, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Cereal, dextrin, and vegetable preparations.- Flour or dough is prepared from a starchy grain material containing a large percentage of sugar and dextrin produced by the action of the enzymes contained in the grain, mixed with a starchy material from other sources, such as potato pulp, potato flour, potato starch, or corn starch, and, if desired, with materials containing proteins and salts. Grain, such as rye, or flour is maintained at from 10‹ to 30‹ C. until the desired percentage of sugar has been produced. Bran, peas, or beans, or a substance extracted from bran by a solution of salts may be employed to supply the proteins. The product may be a dough from which bread is made, or it may be a flour.
Patent GB-1461033-A (GB)
Title: Furniture polinths and methods of mounting such plinths
IPC: A47B95/00
Filed: 1975-01-15
Abstract: 1461033 Adjustable feet; furniture feet; ornamenting furniture H TEISSEIRE 15 Jan 1975 [15 Jan 1974] 1758/75 Headings A4H and A4U A method of mounting an elongate and generally horizontally extending plinth 1 under a piece of furniture 8, whose undersurface 7 is capable of deflecting downwards under load, comprises attaching intermediate floor-engaging supports 6 of adjustable height to a rear face of the plinth at intermediate positions along the length thereof, the supports 6 being initially of smaller height than the height above the floor of the under-surface which is supported on floor-engaging end feet (10), placing the plinth under the piece of furniture from the front thereof, attaching the plinth to front faces of the end feet, and then adjusting the supports 6 in height to engage the undersurface 7 to prevent or reduce subsequent downward deflection thereof. The supports 6 and end feet (10) are attached to the plinth 1 by elastic studs 3, (9) which snap fit in rear longitudinal grooves 2 in the plinth, the studs 3 being integrally moulded with supports 6 and the studs (9) being integral with collars (12) which snap fit on end feet (10). Supports 6 have threaded ferrules 5 which are turned by a tool inserted in a space 13 between the undersurface 7 and the plinth 1.
Patent GB-786135-A (GB)
Title: Substituted cyclopentyl compounds
Filed: 1956-01-18
Abstract: The invention comprises cyclopentylacetic acid amides of the general formula <FORM:0786135/IV (b)/1> (wherein Y represents an unsubstituted or substituted amino group and R represents hydrogen or an alkyl, aralkyl, cycloalkyl or aryl radical), and the preparation thereof by reacting the corresponding compounds in which Y is halogen, OH or O-alkyl with an NH compound such as ammonia, a primary or secondary amine or a urea.  The products are useful as sedatives or as intermediates for other therapeutic agents.  In examples, cyclopentylacetic acid is brominated in the presence of red phosphorus, the product is treated with thionyl chloride and the resulting acid chloride is reacted with (1) aqueous ammonia, (2) urea in benzene, and (4) dibutylamine in ether.  In Example (3), cyclopentyl-n-butylacetic acid is treated as in (1).  There may similarly be prepared cyclopentyl-n-propyl-, di-(cyclopentyl)-, cyclopentyl-benzyl-and cyclopentyl-phenyl-bromoacetamides.
Patent GB-725666-A (GB)
Title: Condensation products of styrene oxide with alkylene oxides and method of making the same
Inventor: BRITTON EDGAR CLAY
Filed: 1953-01-21
Abstract: Mixed polyglycols with an average molecular weight of at least 300 are prepared by interpolymerizing 0.1-9 mols. of styrene oxide with one mol. of at least one alkylene oxide having 2-4 carbon atoms/mol., by heating the liquid phase oxide mixture in presence of 1-10 per cent by weight of a glycol and 0.1-0.5 per cent of an alkali metal hydroxide at 80-200 DEG  C. and under p  superatmospheric pressure. Alkylene oxides mentioned are ethylene, 1,2-propylene, isobutylene and 1,2-butylene.  Glycols mentioned are ethylene, propylene, butylene, dipropylene, triethylene, tripropylene, or phenyl ethylene. Preferably the glycol corresponds with one of the oxides in the reaction mixture. The glycol may be formed from the oxides by addition of a small quantity of water.  The products are soluble in aromatic hydrocarbons and some of them in water.  They are suitable as plasticizers, e.g. for polystyrene or ethyl cellulose or as emulsifying or dispersing agents.  On completion of the reaction the catalyst is neutralized, e.g. with carbon dioxide, HCl or H2SO4 and the product freed from salts by washing and from unwanted components and low polymers by distillation.  The colour may be improved by treatment with finely-divided charcoal. In the examples, polymers are prepared from styrene oxide and (1), (5), (7) 1,2-propylene oxide; (2), (3) and (4) ethylene oxide; (8), (9) and (10) mixtures of ethylene oxide and 1,2-propylene oxide.ALSO:Mixed polyglycols with an average molecular weight of at least 300 are prepared by interpolymerizing 0.1-9 mols. of styrene oxide with one mol. of at least one alkylene oxide having 2-4 carbon atoms/mol., by heating the liquid phase oxide mixture in presence of 1-10 per cent by weight of a glycol and 0.1-0.5 per cent of an alkali metal hydroxide at 80-200 DEG C. and under superatmospheric pressure.  Alkylene oxides mentioned are ethylene, 1,2-propylene, isobutylene and 1,2-butylene. Glycols mentioned are ethylene, propylene, butylene, dipropylene, triethylene, tripropylene, or phenyl ethylene.  Preferably the glycol corresponds with one of the oxides in the reaction mixture. The glycol may be formed from the oxides by addition of a small quantity of water.  The products are soluble in aromatic hydrocarbons and some of them in water.  They are suitable as plasticizers, e.g. for polystyrene or ethyl cellulose or as emulsifying or dispersing agents.  On completion of the reaction the catalyst is neutralized, e.g. with carbon dioxide, HCl or H2SO4 and the product freed from salts by washing and from unreacted components and low polymers by distillation.  The colour may be improved by treatment with finely-divided charcoal. In the examples polymers are prepared from styrene oxide and (1), (5), (7) 1,2-propylene oxide; (2), (3) and (4) ethylene oxide; (8), (9) and (10) mixtures of ethylene oxide and 1,2-propylene oxide.
Patent GB-581802-A (GB)
Title: Improvements in or relating to electric welding apparatus
IPC: B23K11/00
Filed: 1941-02-10
Abstract: 581,802. Welding gas containers &c. AUTOMOTIVE PRODUCTS CO., Ltd., and SMITH, R. E. Feb. 10, 1941, No. 1817. [Classes 83 (ii) and 83 (iv)] Two sections of a hollow body which are to be welded together, such as in making a gas container or bottle, are secured to the work holders of the electric welding machine by soldering, brazing or the like. The sections 14, which may be semi-cylindrical with one end partly spherical and the other end open, may first be soldered over their whole surfaces or at spaced points to external and internal supports 26, 34. The supports 26 are located and slidably mounted in recesses in dies 23 which are held in recesses in bolsters 21 carried respectively by the fixed and movable parts 17, 18 of the welding machine. The movable part 18 may be operated by fluid pressure or by a cam driven by an electric motor. The faces of the supports 26, 34 and the ends of the recesses in the dies 23 are shaped to conform with the surfaces of the sections. The 'supports 26 are provided with studs 31 having hooks 43, which may be engaged with hooks 42 on fluid-operated pistonrods 41 controlled by a valve 44 so as to press the sections into the dies. In order to provide for endwise loading of the sections in the dies after soldering has been effected, the dies and bolsters are provided with open-ended longitudinal slots 32, 33 through which the studs 31 may be guided. Spreading of the upper and lower parts of the bolsters under load from the fluid-pressure mechanism is prevented by pivoted latches 51. The valve 44 is first operated so that the pistons 37 are withdrawn and after loading of the sections, the valve is operated so that the pistons move forward, the hooks 43 riding over the hooks 42 and dropping into engagement therewith. Thereupon the control valve is returned so that the sections are pulled back into the dies. After welding, the valve is again reversed to free the work supports which are then removed endwise after first moving the bolsters slightly apart. The work is then separated from its supports after melting the solder. The open end is then formed to hemispherical shape with a neck on which a reinforcing ring is welded and the body is strengthened by a wire wound thereon between collars soldered to the body and having flanges bent over the end turns. The slots 32, 33 may be replaced by holes, in which case the sections are axially loaded, the saddle 18 being first traversed. The die and bolster may be integral with each other. The internal support may be positioned by resilient or collapsible struts instead of by soldering, or may be dispensed with.
Patent GB-256475-A (GB)
Title: Improvements in or relating to light-reflecting devices or units
IPC: G02B5/126
Filed: 1926-01-22
Abstract: 256,475. Murray, R. H. Jan. 22, 1926. Reflectors. - Lightreflecting devices of the type described and claimed in Specification 194,034 are provided with bases or caps upon which the devices mav be stood while being fitted in a frame or holder; the caps also serve as protectors for the reflectors. As shown, the device comprises a lens having convex and plane surfaces 8, 9 respectively, and a concave reflector 10 fitted to the lens. A pressed metal cap 12 is fitted on the device and has a flat base and a shouldered wall 13. The wall 13 may be crimped on to the lens to secure the cap, and a filling 15 of plastic material may be provided. In a modification, the cap may be formed by extending and turning back the rim 11 of the reflector 10, the enclosed space being provided with a filling. In a further modification the reflector may itself be formed as a cap with a flat base. The surface 9 of the reflector may be ground and polished.
Patent GB-126678-A (GB)
Title: Improvements in the Process for the Manufacture of Ammonium Nitrate.
Inventor: FREETH FRANCIS ARTHUR
IPC: C01C1/18
Filed: 1917-02-07
Abstract: 126,678. Freeth, F. A., and Cocksedge, H. E. Feb. 7, 1917. Ammonium nitrate is obtained by preparing a solution saturated with ammonium nitrate, sodium nitrate, and sodium sulphate at a selected temperature, adding enough water to keep the sodium salts in solution at a selected lower temperature and then cooling the diluted solution to that temperature when ammonium nitrate separates out. The mother-liquor is then concentrated until the added water has been removed, and quantities of ammonium sulphate and sodium nitrate equivalent to the separated ammonium nitrate are then added, the whole being maintained at a temperature not lower than the original selected temperature. Sodium sulphate separates and is removed, and the whole series of operations can then be repeated indefinitely. Specification 16454/10 is referred to.
Patent GB-122504-A (GB)
Title: Improvements in or relating to Furnaces.
Inventor: SMALLWOOD ALFRED
IPC: A22C13/00
Filed: 1918-02-02
Abstract: 122,504. Smallwood, A. Feb. 2, 1918. Reverberatory furnaces.-In a gas-fired furnace, air from a recuperator beneath the working-chamber passes to an adjacent transverse flue q, from which part is delivered into the gas flue b from below through ports r, while the remainder enters a second transverse flue u at a higher level and passes into the gas flue from above through ports v. In the construction shown, the furnace comprises two working-chambers c with a single gas producer a between them. The products of combustion leave the working-chambers through the ports e, and after traversing the passages f, g, h, of the recuperators, enter transverse flues i in communication with a roof flue l and the chimney. The air passages n, p, of the recuperator are situated between the sets of waste-gas passages f, h, and are in communication with an horizontal chamher o between the upper and lower sets. A supply of gas from an external source may be delivered through passages at the sides of the recuperators, a transverse flue x, and ports z. In this care the producer may be bricked up.