baber/WOPTO huggingface dataset:
Patent GB-1393394-A (GB)
Title: Devices for producing an air flow
IPC: A61G13/00
Filed: 1972-06-16
Abstract: 1393394 Treatment chambers PIELKENROOD-VINITEX BV 16 June 1972 [17 June 1971 10 Dec 1971] 28206/72 Heading A5R [Also in Division F4] A germ-free air supply cabinet 1 has a middle section 10, Fig. 1 for supplying an air flow horizontally over an operating table 11 and side sections 12 for supplying air to the spaces on each side of the table where the surgeon and his assistance stand. Each section has a separate, independently controllable fan drawing air from slit 3 and passing it through filter 4 Fig. 2 and vertical grid 5. The sections 12 have shelves 13 where sterile operating equipment may be stored. Circulation of room air over the operating table is reduced by a hanging curtain 15 and extra nozzles 17, 18, 19 providing air barriers at the foot of the bed. When not in use the curtain may be stored in canister 16.
Patent GB-1059214-A (GB)
Title: Photographic silver halide emulsions
Inventor: KITZE THEODORE JOSEPH
IPC: G03C1/49
Filed: 1964-07-09
Abstract: 1,059,214. Photo-developable silver halide emulsions. EASTMAN KODAK CO. July 9, 1964, No.28457/64. Heading G2C. Photo-developable silver halide emulsions contain (1) 0À1-100 mole % of a chloride, bromide or iodide of Li, Na, K, Ca, Mg or NH4 and (2) 0À1-50 mole % of a substituted thiourea halogen acceptor of formula R<1>R<2> N-C(S)-NR<3>R<4> wherein R<1>-R<4> are each H or a substituted or unsubstituted alkyl or aryl group or R<1> and R<4> together complete a heterocyclic ring, not all of R<1>-R<4> being H, the mole % being based on the silver halide. The silver halide grains are preferably 0À1 to 10 Á and are predominately internally sensitive. Suitable heterocyclic compounds (2) are triazolethiols, imidazole-thiones, imidazoline-thiones, triazine thiols, thiobarbituric acids and thiouracils. The emulsions are exposed imagewise to a high intensity light and then developed by a uniform low intensity light.
Patent GB-821339-A (GB)
Title: Improvements in canopies or awnings for shop fronts, door ways or the like
Inventor: WEAVER JOHN GILBERT
IPC: E04F10/10
Filed: 1956-09-20
Abstract: 821,339. Awnings. POLLARD & CO. Ltd., E. Dec. 20, 1957 [Sept. 20, 1956], No. 28847/56. Class 20(3) An awning for a shop front, doorway &c. having lazytong side frames A supporting overlapping metal plates F has the front plate F<SP>1</SP> constructed to form, in the collapsed position, the cover of a box L secured to the building to house the collapsed awning. The awning is locked in its collapsed position by a spring pressed bolt M connected by wire O with a rotatable bar P extending between frames A and rotatable by means of a lever arm R to retract the bolt M which engages with a cam N on the box L. The inner ends of the innermost links B of frames A are attached to sleeves S slidable on rods T mounted on the building and the lower links are formed as toggle links movable against a stop W to lock the awning in extended position. In a modification, Fig. 5, the plates F are bolted to brackets E<SP>1</SP> welded to the links B instead of being supported on extensions of the links and instead of a bolt M, rollers engage spring loaded toggle catches N<SP>1</SP>. With large awnings adjustable springs may be mounted to exert pressure between the lower sleeves S and a fixed point on the building and counterbalance a proportion of the inclined weight.
Patent GB-875655-A (GB)
Title: Process for the production of fluorobenzoic acids
IPC: C07C51/275
Filed: 1959-08-24
Abstract: Fluorobenzoic acids are prepared by oxidising fluorotoluenes at elevated temperature and elevated pressure with aqueous nitric acid. Specified temperatures are 125 DEG -250 DEG C. and preferably an excess of nitric acid is used.  In a modification of the process the nitric acid is replaced by nitrous gases.  In examples o-, m- and p-fluorotoluenes are heated with aqueous nitric acid in a stainless steel autoclave to give the corresponding fluorobenzoic acids.
Patent GB-407434-A (GB)
Title: Improvements in or relating to mechanism for collecting and delivering sheets of paper, cardboard and the like
IPC: B65H33/16
Filed: 1932-10-15
Abstract: 407,434. Sheet-delivery apparatus. TIMSON, E. A., Perfecta Works, Catesby Street, Kettering. Oct. 15, 1932, No. 28872. [Class 100 (i).] Apparatus for delivering paper, cardboard, or like sheets from printing or other machines comprises movable supports on which a batch of sheets is collected and a counting-mechanism whereby a reciprocating element is moved into operative engagement with the supports to cause the supports to deliver the batch when a predetermined number has been collected. The supports 1 are pivoted on shafts 4 inter-connected for simultaneous movement in opposite directions by levers 12 against the pull of a spring 15. A stop 16 on one arm 12 engages a fixed pin 17 to limit the movement, and the other arm 12 has an extension 21 carrying a pivoted block 20. Adapted to engage the block 20 and move the arms 12 and supports 1 at the required intervals is a foot 19 on a member 18 pivoted to an arm 31 fixed to the oscillating shaft 32 carrying the beater 35 for knocking the sheets from delivery-bands 33 on to the supports 1. The member 18 is normally held in inoperative position by a spring 18<a>, but is caused by pins 29 on a ratchet-disc 24 engaging a cam block 30 thereon to move into a position where the foot 19 on its upward movement engages the block 20 and operates the supports 1. A pawl 22 pivoted to the lever 31 has two teeth 26, 27, the longer 26 of which drives a ratchet-disc 23. A deep tooth 28 on the disc 23 allows the tooth 27 to engage and operate the pin-carrying pawl disc 24 once for each revolution of the disc 23. A spring- pressed detent 34 holds the discs against unwanted movement. By changing the discs 23, 24 or altering the number of pins 29 on the disc 24, the number of sheets collected in each batch can be varied. Fixed stops 45 and movable stops 36 are provided for jogging the collected sheets, the latter being suspended by links 38 and operated from the shaft 32 by levermechanism 37, 39, 40, 42, 43.
Patent GB-504131-A (GB)
Title: Improvements in or relating to speedometers and other indicating instruments
IPC: G01P1/11
Filed: 1937-10-22
Abstract: 504,131. Indicating apparatus ; speedometers. KENNEDY, A. Oct. 22, 1937, No. 28933. [Classes 106 (iii) and 106 (iv)] In an indicating and/or recording instrument such as a speedometer fitted with an indicating needle 12 movable over a scale, one or more setting pointers 15 are mounted on a transparent cover 14 for the instrument and each carries a flexible wiper contact element 16 which contacts with the needle when the latter coincides with the pointer the pointers being adjustable by manually operated knobs 22 on the outside of the cover. One end of an electric signalling circuit may be clamped to the spindle of the setting pointer 15 which is insulated from the rest of the instrument. The other end of the circuit is connected to the indicating needle so that a signal is given whenever the needle passes by the pointer.
Patent GB-742527-A (GB)
Title: Improvements in and relating to radar apparatus
Inventor: BOWEN ARTHUR
IPC: H01Q3/18
Filed: 1951-12-11
Abstract: 742,527. Radio direction-finding systems. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 23, 1952 [Dec. 11, 1951], No. 28994/51. Class 40 (7). To avoid overshooting a radar target and to follow it smoothly, an aerial array comprises a directional transmitter (horn 4) mounted on the reflector turntable for rotation thereon about an axis parallel to the axis about which the turntable moves in azimuth. The horn has Œ 5 degrees of freedom and it is able, with its small inertia, to follow a target smoothly. Predictor information is obtained by adding the outputs of magslips on the turntable and on the horn arm 3. In an alternative array the horn is stationary and radiates to the main reflector via a small mobile subsidiary reflector. The movement of the array in elevation may be similarly controlled.
Patent GB-685889-A (GB)
Title: Process for the recovery of solvents in chemical cleaning
IPC: B01D5/00
Filed: 1950-11-28
Abstract: Water used to precipitate dry-cleaning solvent of greater specific gravity than water from heated air which has passed through cleaned textile material and on which water the solvent floats as a result of a surface-tension effect is subjected to violent movement, for example by means of a circulating pump, stirring or shaking device or by directing a jet of it on an impingement plate to cause the solvent to deposit in the water, whereupon isolation is effected, for example in a water separator. Examples of dry-cleaning solvent are trichlorethylene and perchlorethylene.
Patent GB-948562-A (GB)
Title: An improved air-cooled heat exchanger
IPC: F28B1/06
Filed: 1962-07-30
Abstract: 948,562. Air-cooled heat exchangers. HAPPEL G.m.b.H., [trading as GEA LUFTKUHLER - GESELLSCHAFT HAPPEL G.m.b.H. KOMM. GES.]. July 30, 1962 [July 29, 1961], No. 29175/62. Heading F4S. In an air cooled heat exchanger or condenser at least one exchanger element 4 comprising a number of preferably ribbed tubes is arranged in an inclined plane and a fan is positioned below it to blow cooling air upwards over it, and a louvre 6 is arranged on the air discharge side of the element at an angle less than 90 degrees to the plane of the element wherein the blades of the louvre have a generally upward slope in cross-section. As shown, the heat exchanger comprises a plurality of elements 4 arranged in gable fashion over whose surfaces cooling air is blown from a fan (not shown). Louvres 6 extend over the greater part of the vertical height of the elements and may extend over the whole height. The louvres are pivotally mounted at their bottom edges and are held vertical, but may be held in any plane which approximately intersects the bottom edge of each adjacent heat exchange element. The slope of the louvre blades is adjustable. Protective screens are provided at those sides of the heat exchanger not fitted with louvres.
Patent GB-206687-A (GB)
Title: Improvements relating to apparatus for charging secondary batteries
IPC: H01M10/46
Filed: 1922-10-26
Abstract: 206,687. Thor Electric Safety Lamp Co., Ltd., and Stretton, T. Oct. 26, 1922. Stands for charging secondary batteries are provided with projections f depending from the trays a and adapted to engage stops k on the batteries to prevent the latter from being placed in position for charging with their polarity reversed. The trays are provided with an open front c but with a rim b round the remaining portion and they are carried by rails g one of which supports an insulating slab i carrying the charging contacts j. The trays are preferably made in pairs as shown in plan in Fig. 3.
Patent GB-295349-A (GB)
Title: Improvements in milking machines
IPC: A01J5/04
Filed: 1927-11-02
Abstract: 295,349. McCornack, H. Aug. 10, 1927, [Convention date]. Cow-milkers. - In a milking-machine having a milk-receiving bucket 1 pivotally suspended from a support 2, 3 in such a manner that the weight thereof is partly borne by the cow's udder through the teat cups 6, an oscillator 17 is interposed between the bucket and a point substantially fixed in relation to the suspension means for the purpose of mechanically swinging the bucket independently of the surging produced by the teat cups under the action of the pulsator 11. The oscillator consists of a rigid shell 18, connected by a stem 19 to a handle 20 of the bucket lid 8, and a rubber diaphragm 21, fitted with a forwardly extending stem 24 engaging with a hook 26 on a pivoted arm 4 on the bucket handle 5, and' the space between the parts 18, 21 is connected by a pipe 27 to the pulsator 11 which is mounted on the lid 8. A valve 15 with hanging weight 16 provides a communica. tion between the inside of the bucket and vacuum in a tube 12 connected up to the pulsator. As each teat is milked out the respective cup is automatically pulled off and drops to a position to shut off the vacuum from it. By the provision in each nipple 14 of a circumferential groove 28 with one or more openings 29 the vacuum in the bucket can be utilized to hold the milk tubes 5a more securely to the nipples and so to the bucket lid; a similar connection is provided between the pipe 12 and the pulsator nipple 12a. To prevent milk from being carried over into the vacuum line the nipples 14 are arranged at an acute angle to the lid and the inner ends of the nipples are made bell shape, and there is also a semicircular deflecting ring 30 of triangular cross-section arranged on the lower surface of the lid around the vacuum port 13. The spout 7 is preferably provided with a central reinforcing strip 31 which may be crimped to form projections 32 serving to prevent slipping between the spout and a receptacle into which milk from the bucket is being poured. When the bucket has been disconnected from the cow the hooked arm 4 falls flat against the handle 5 and lies in the channeled upper face thereof. Australian Specification 20624 is referred to.
Patent GB-1150562-A (GB)
Title: Improvements in or relating to Differentials
Inventor: KNOBLOCK FREDERICK DELBRIDGE
Filed: 1966-06-30
Abstract: 1,150,562. Differential gears. F. D. KNOBLOCK. 30 June, 1966 [1 July, 1965; 19 April, 1966], No. 29327/66. Heading F2D. A differential comprises spring-loaded members 30, 31 splined to half-shafts 23, 24 and normally coupled by bevelled clutch teeth 28 to similar teeth 27 on opposite sides of a central drive member 26 coupled to the crown wheel 22, the member 26 housing an inner control member 36 and side balk rings 38. The control member 36 has oppositely disposed teeth 37 with inclined sides, while each of the side rings 38 has radial projections (39) engaging locking grooves 40 in the drive member and outwardly projecting balk teeth 43. In operation, if shaft 24 and member 31 overrun the driving member 26 the inclined teeth 37 on the latter engage teeth 28 to force member 31 out of driving engagement against its loading spring, and at the same time the associated side ring 38 is rotated against a stop key 42, in which position the balk teeth 43 prevent engagement of teeth 27, 28. When the shaft speeds become equal ring 38 returns to its normal position to allow re-engagement of members 26, 31.
Patent GB-1516087-A (GB)
Title: Generation of low frequency high voltages
IPC: H02M7/533
Filed: 1974-07-03
Abstract: 1516087 Converters F C ROBINSON & PARTNERS Ltd 27 June 1975 [3 July 1974] 29498/74 Heading H2F An apparatus wherein, in use, D.C. high voltages are modulated comprises a high voltage circuit 9 and a low voltage circuit 10 electrically isolated therefrom. The low voltage circuit includes means for producing an electrical control signal for modulating the D.C. high voltages, and a light emitting means energized, in use, by the electrical control signal. The high voltage circuit has a light responsive means to which, in use, the signal from the light emitting means is supplied for generating the control signal in the high voltage circuit. The light signal is conducted from the low voltage circuit to the high voltage circuit by fibre optic light transmission means. The electrical control signal in the low voltage circuit is produced by an oscillation 19. The period of the high voltage modulation and the level thereof is controlled in the low voltage circuit by circuits 21 and 22 respectively. The high voltage circuit comprises a pair of triodes 11, 12, the control signals being impressed on the grids thereof. A filter network 15 is provided for fitting transients in the high voltage circuit. The oscillator 19 may bereplaced by a low frequency waveform generator so that the high voltage output may be sinusoidal, ramp triangular &c. Alternatively a variable frequency waveform generator may be used. In a further embodiment (Fig. 2, not shown) two banks of series and parallel connected high voltage triodes are provided each pair thereof being separately controllable by control signals applied to the grids thereof. The apparatus is used for testing insulators.
Patent GB-498085-A (GB)
Title: Improvements in and relating to the manufacture of asbestos cement products
IPC: B28B1/42
Filed: 1937-10-28
Abstract: 498,085. Cylinder board - making machines. TURNER & NEWALL, Ltd. (Eternit-Werke L. Hatschek) Oct. 28, 1937, No. 29534. [Class 96] In making asbestos-cement sheets on a machine of the millboard type, fibres, on the cylinders 2 above or below the pulp level in the vats 4, or on the felt 1, are displaced as by combs 7 on arms 9 pivoted and reciprocated on rods 8 by hand or mechanically. Alternatively rollers with helical ribs, or bristles, pins, teeth, &c. may be used. Fibres of successive layers may be oppositely displaced.
Patent GB-1202167-A (GB)
Title: Improvements in devices for scraping rotating rolls
IPC: D21G3/00
Filed: 1968-06-21
Abstract: 1,202,167. Roller mills. VALMET OY. 21 June, 1968 [22 June, 1967], No. 29607/68. Heading B2A. [Also in Divisions D1 and D2] A device for scraping a rotating roll, grinding and crushing machines, comprises a blade 2, secured to a hollow support 1, an inner beam 3 located inside the support, a plurality of means operable by fluid pressure being arranged to exert forces between the inner beam 3 and the support to deflect the support, so regulating the pressurve exerted by the blade over its length. The fluid pressure means may be expansible tubes 11 pressurised by cylinder-andpiston units 7. Telescopic cylinders or bellows may be substituted for the tubes 11. The expansible tubes 11 may extend longitudinally of and parallel with the support, and may be accommodated in channels bounded by the surfaces of the inner beam 3, flanges 10 secured to these surfaces, and strips 9 on the inner surfaces of the support 1. The support 1 and the inner beam 3 may be box-type beams, and the support 1 may be mounted so that the cylinder-and-piston arrangement 7 acts on the support to provide the pressure between the blade and the roll. .
Patent GB-722870-A (GB)
Title: Accelerators for vulcanisation
IPC: C08K5/00
Filed: 1952-11-24
Abstract: The invention comprises N, N-disubstituted-thio - carbamyl - thiomethyl phenols of the formula <FORM:0722870/IV (b)/1> wherein R is a monocyclic phenol residue and R1 and R2 are aliphatic, cycloaliphatic, aralkyl, furfuryl or tetrahydrofurfuryl radicals or are joined together to form a single cycloaliphatic radical including morpholino and piperidino. The compounds are addition products of carbon bisulphide and amino-methylene-phenols and may be prepared by heating carbon bisulphide at 125 DEG  to 175 DEG  C. and at superatmospheric pressure with the reaction product of the phenol, a secondary amine and formaldehyde.  Alternatively, the carbon bisulphide may be reacted simultaneously with these three ingredients, or the amine and bisulphide may form the dithiocarbamate which is reacted with the formaldehyde and phenol.  With certain phenols, e.g. 3,5-xylenol, normal pressures and temperatures of about 90 DEG  C. are sufficient.  In the examples, (1) the reaction product of 3,5-xylenol, dimethylamine and formaldehyde is refluxed with CS2 giving a compound of the formula <FORM:0722870/IV (b)/2> ; (3) dimethylamino - methyl - m - cresol is heated with CS2 in a sealed tube at 150 DEG  C. to give N,N - dimethyl - thiocarbamyl - thiomethyl - m - cresol; (5) bis (N1N-dimethyl-thiocarbamyl-thiomethyl) hydroquinone is similarly prepared.  Lists of other monocyclic phenols and secondary amines are given which may be used to prepare the compounds of the invention which are used as vulcanizing accelerators.ALSO:Compounds which are used as accelerators in the vulcanization of natural and synthetic rubber comprise N, N - disubstituted - thiocarbamyl - thiomethyl phenols of the formula <FORM:0722870/V/1> where R is a monocyclic phenol residue and R1 and R2 are aliphatic, cycloaliphatic, aralkyl, furfuryl or tetrahydrofurfuryl radicals or are joined together to form a single cycloaliphatic radical including morpholino and piperidino. Specified compounds are the N, N-dimethyl-thiocarbamyl-thiomethyl, derivatives of 3, 5-xylenol, m-cresol and hydroquinone.
Patent GB-636640-A (GB)
Title: Improvements in or relating to electric motors with speed reduction gearing
IPC: H02K7/116
Filed: 1947-11-07
Abstract: 636,640. Motor driving arrangements. LANCASTER, S. D. Nov. 7, 1947, No. 29749. [Class 35] [Also in Group XXIV] An electric motor has, at one end of its casing, inner and outer closure members 13, 15, housing a speed reduction gearing. The latter comprises a double pinion 2 freely mounted on an eccentric pin 3 on the motor shaft 4, the pinion 2 having gear teeth 6 meshing teeth 8 on a ring fixed to the member 13 and gear teeth 7 meshing teeth 9 on a plate 10 fixed to an output shaft 11 in alignment with the motor shaft 4. The shaft 11 is carried in bearings 17 in the closure member 15. A balance weight 20 is fixed to the end of the pin 3.
Patent GB-230397-A (GB)
Title: Improvements in brakes for bicycles and the like
IPC: B62L1/14
Filed: 1924-12-11
Abstract: 230,397. Creed, A. B. Dec. 11, 1924. Brake mechanism.-In brake yokes of the kind comprising two block or pad carrrying angle arms a pivoted to the transmission rod i, the arms are pivoted at e to the upper ends of two auxiliarv arms d the lower ends of which are each anchored by the hooked end of a clip f to a fork limb g. The auxiliary arms have lugs h to resist any tendency of the angle arms being carried forward with the wheel when the brake has been applied.
Patent GB-1414420-A (GB)
Title: Reactive triazine dyestuffs
IPC: C09B62/04
Filed: 1973-06-22
Abstract: 1414420 s-Triazinylamino phosphorus compounds CIBA-GEIGY AG 22 June 1973 [23 June 1972 14 June 1973] 29799/73 Heading C2P [Also in Division C4] (4,6 - Dichloro - s - triazin - 2 - yl) - phosphorimidic trichloride is prepared from 4,6-dichloro- 2-amino-s-triazine and phosphorus pentachloride in dioxane. It may be isolated by removal of the dioxane in vacuo followed by sublimation. The corresponding 4,6-dibromo- or 4,6-difluoro compounds may be prepared similarly (Ex. 1). (4,6 - Dichloro - s - triazin - 2 - yl) - phosphoramidic acid is prepared, as the disodium salt, by treating the trichloride in dioxane with aqueous disodium hydrogen phosphate under alkaline conditions. The corresponding dibromo or difluoro compounds may be prepared similarly (Example 1). N - (4,6 - dichloro - s - triazin 2 - yl)- N- methyl-phosphoramidic acid may be prepared analogously (Example 1). The compound is prepared from (4,6-dichloro-s-triazin-2-yl)- phosphoramidic acid and m-phenylenediaminesulphonic acid in aqueous solution, and subsequently converted to a diazonium chloride.
Patent GB-320765-A (GB)
Title: Improvements relating to tampings for bore-holes for blasting cartridges
IPC: F42D1/18
Filed: 1928-10-16
Abstract: 320,765. Hodge, D. Oct. 16, 1928. Blasting tampings.-An expansible tamping comprises a. cylindrical plug a split longitudinally into two separate halves but retained together by bolts and springs d, e, and adapted to be wedged aside, for example by cones h worked by screws f. This expansion causes the tamping to grip the sides of the borehole firmly. The surface of the plug may be formed with serrations or projections k, and with a longitudinal groove l for the fuze.