baber/WOPTO huggingface dataset:
Patent GB-659547-A (GB)
Title: Improvements in electric hand lamps
IPC: F21L14/02
Filed: 1949-07-26
Abstract: 659,547. Supply systems for space discharge lamps. ALLWOOD, R. H., and PROCESS CONTROL GEAR, Ltd. July 26, 1949, No. 19632. [Class 38 (iv)] [Also in Group XI] A portable hand lamp comprises a fluorescent discharge lamp 18 mounted behind a window 17 of glass or transparent plastic material at one side of a casing containing a pair of dry batteries 14 connected in series in a circuit which includes an inductive resistance 25 and " on " and " off " switches 20, 21 of the pushbutton type, the switch 20 being normally in the open position and switch 21 closed. To start the lamp the filaments 24 are heated by closing switch 20 for a brief period and then releasing the pressure to allow the switch to open, whereupon the discharge through the lamp is initiated. The lamp is switched off by depressing push-button 21. The casing is provided with a carrying-handle 11 attached to a top cover-plate, with the push-button switches located one at each side of the handle and closely-adjacent thereto. Specifications 641,077 and 641,129 are referred to.
Patent GB-530929-A (GB)
Title: Improvements in or relating to pulleys or the like made of mouldable plastic materials
IPC: B29C67/00
Filed: 1939-07-06
Abstract: 530,929. Driving pulleys. FAIREY AVIATION CO., LTD., and WALMSLEY, W. July 6, 1939, No. 19712 [Class 80 (i)] [Also in Group XXXIV] A pulley etc., of plastic material is moulded about a bush a of light aluminium alloy or other ductile metal having an inwardly projecting flange b at one side to form an abutment for a ball or roller bearing which is secured in position by spinning over a deformable lip c at the other side of the bush. Alternatively the deformable lip may be formed on a separate annulus threaded into the bush. The outer surface of the bush is knurled.
Patent GB-880637-A (GB)
Title: Improvements relating to speed governors
IPC: G05D13/08
Filed: 1959-06-09
Abstract: 880,637. Centrifugal governors. FAIRCHILD ENGINE & AIRPLANE CORPORATION. June 9, 1959 [Sept. 17, 1958], No. 19738/59. Class 57. [Also in Group XXIX] A fluid-pressure governor operating, e.g. through an actuator 5 on the throttle 4 of a turbine 2, comprises a housing 10 which is rotated at a speed dependent on the turbine speed, the housing containing a movable valve member 16 which moves outwards centrifugally against the force exerted by a spring 19 which is connected between the valve member and a movable anchorage 20 within the housing, this anchorage being movable by fluid-pressure controlled means, such as a pressure-responsive diaphragm 21, within the housing in order to vary the setting of the governor, the pressure of the fluid transmitted to the diaphragm 21 being controlled by a regulator 32 outside the housing, the valve member controlling the flow of a second fluid through the housing which is arranged to operate the actuator 5. A port 44 in the hollow open-ended piston valve 16 controls the inlet of the second fluid to a control chamber beneath the piston, this fluid being supplied from a point upstream of the throttle 4 through a restriction 41. The lower edge of the piston controls a vent port 48, a control pressure from the chamber being led to the actuator 5 through a restriction 46. The control chamber is connected to the opposite side of the piston through a pair of restrictions 51, 52 and a volumetric passage 50 between them, the restriction 51 at the upper end of the piston being smaller than the restriction 52. Thus a space 15 above the piston functions as a dashpot chamber to prevent response to transient conditions arising, e.g. from torsional oscillation. Volumetric passage 50 between the restriction causes the pressure above the piston to lead or lag the pressure in the control chamber beneath it so that a temporary speed droop may be provided which has a stabilizing effect on the control system.
Patent GB-753947-A (GB)
Title: Improvements in overload-slipping couplings for shafts for transmitting rotary motion
IPC: F16D3/00
Filed: 1954-07-07
Abstract: 753,947. Overload slip clutches; universal joints. YATES, H. July 7, 1954, No. 19895/54. Class 80(2) A clutch which slips on overload comprises a sleeve c, keyed on a shaft a, carrying axially directed blade springs e having part spherical studs i at their ends engaging in axial grooves j in a sleeve d keyed to shaft b. On overload, the studs i ride out of the grooves j and give audible warning that the clutch is slipping. Shims h allow the radial distance of the springs e from the shaft a to be adjusted. In the form shown, the clutch allows universal movement between the shafts a, b, but in a modification, Fig. 6 (not shown), the grooves j are formed in a hub secured to a pinion journalled on the shaft to which the sleeve is keyed. In a further modification, Fig. 7 (also not shown), the part spherical studs i are carried on the radially outer sides of the springs e and engage in axial grooves j on the inside of a cylindrical recess in a V-belt pulley journalled on the shaft to which the sleeve c is keyed.
Patent GB-883013-A (GB)
Title: N,n-substituted piperazines
Inventor: GOLD-AUBERT PHILIPPE
IPC: C07D/
Filed: 1957-06-25
Abstract: The invention comprises compounds of the general formula <FORM:0883013/IV (b)/1> and their non-toxic acid addition salts in which R and R1 which may be the same or different represent hydrogen atoms, C1-5 alkyl, aryl or aralkyl groups, Alk and Alk1 represent straight or branched chain C1-3 alkylene radicals and may be the same or different and R2, R3, R4 and R5 which may be the same or different represent hydrogen or halogen atoms or C1-3 alkoxy groups, and the preparation thereof by reacting a piperazine <FORM:0883013/IV (b)/2> with a compound <FORM:0883013/IV (b)/3> wherein J and K, which may be the same or different represent groups capable of reacting with the group L to form the group OAlk or OAlk1.
Patent GB-773461-A (GB)
Title: Dehydroepiandrosterone acetate
IPC: C07J75/00
Filed: 1955-07-11
Abstract: Dehydroepiandrosterone acetate (D 5 androsten - 3b  - acetoxy - 17 - one) is prepared by mixing D 5,16-pregnadien-3b -acetoxy-20-one oxime with an excess of phosphorus oxychloride in pyridine, pouring the mixture into a mixture of concentrated hydrochloric acid and ice at such a rate that the temperature of the reaction product exceeds 40 DEG  but does not exceed 50 DEG  C., and collecting the precipitate obtained. Preferably more than four mols. of phosphorus oxychloride per mol. steroid is used and the reactants are mixed at a temperature below - 10 DEG  C.  In an example: D 5,16-pregnadiene-3b -acetoxy-20-one oxime in pyridine is cooled to - 15 DEG  C. and a cooled solution of phosphorus oxychloride in pyridine slowly added; after 3 hours the mixture is poured on to a mixture of concentrated HCl and ice controlling temperature between 40 DEG  and 50 DEG  C. when D 5-androsten-3b -acetoxy-17-one separates.  It is also stated that if the hydrolysis is carried out below 40 DEG  C. the product is essentially 3b -acetoxy-17b -acetylamino - D 5,16 - androstadiene. Specification 563,889 is referred to.
Patent GB-1291893-A (GB)
Title: Composite spring assembly
Inventor: BROWNYER N
IPC: F16F1/368
Filed: 1970-04-28
Abstract: 1291893 Leaf Spring suspensions NORTH AMERICAN ROCKWELL CORP 28 April 1970 [25 June 1969] 20219/70 Heading B7D [Also in Division F2] In a two-leaf laminated spring for a vehicle suspension one, 15, of the leaves 14, 15 is made of a plastics material. The other, 14, is made of metal, e.g. steel. The leaves are not in contact except at their ends where they are attached to the vehicle body 12, and at an intermediate portion where they are attached to the axle 13. At these places the leaves are not in direct surface contact, but in metal-to-metal contact. At the intermediate portion the plastics leaf element 22 is surrounded by a rigid metal enclosure 23, 24, 26, the top, 23, of which is in contact with the metal leaf 14. U-bolts 41 clamp the leaves 14 and 15 together and to the axle. The ends of the plastics leaf element 22 (which may be reinforced with glass fibre) have metal clips 50 whose bridges 51 are in contact with the metal leaf 14.
Patent GB-902159-A (GB)
Title: Improvements relating to material guiding devices
Inventor: DUBINSKY MILTON
IPC: B65H23/032
Filed: 1959-06-13
Abstract: 902,159. Automatic edge guiding control systems. MOUNT HOPE MACHINERY S.A. June 13, 1959, No. 20319/59. Drawings to Specification. Class 38 (4). In a system for automatically controlling the lateral position of a moving web of material, e.g. cloth, paper, or metal, the edge of the material operates a two-way switch controlling a forcebalanced pneumatic servomotor which adjusts transversely the position of a support for the material. In the arrangement described the two-way switch operates one or other of two solenoid-operated changeover valves in lines coupling a pneumatic pressure source through check valves to each side of the servomotor piston so that the pressure on one side of the servomotor piston is reduced gradually through a needle valve to operate the servomotor in the appropriate direction to effect correction. When the position of the web is correct the forces on each side of the servomotor piston are equalized by means of a self-bleeding regulating valve in the appropriate pneumatic line to the servomotor or by providing a piston-rod on each side of the piston. The servomotor may have two pistons with an oil slug between or oil may be supplied through petcocks.
Patent GB-585974-A (GB)
Title: An improved method and means of heat treating articles
IPC: C21D1/34
Filed: 1944-10-21
Abstract: 585,974. Heat treating. FALLON, J. Oct. 21, 1944, No. 20415. [Class 51 (ii)] [Also in Group II] In a method of heat treating articles the articles are enclosed within a thermo - induction cell formed in two or more sections providing a cavity adapted closely to conform to the size and outline of the article but permitting a minimum clearance, the separable sections being provided with interconnecting means. As shown, the cell consist's of two portions a having fins a<1> on the outer surface and dowel pins c for positioning. The article b is inserted in a cavity a<2> which is of a shape and size to allow a minimum clearance round the article. The cell may be preheated before inserting the article or the article may be removed and a fresh one inserted before the cools down. The thickness of the material of the cell should have a minimum value of one inch and never less than the greatest thickness of the article.
Patent GB-829815-A (GB)
Title: An electric switching device
Inventor: MANTZ HAROLD A
IPC: H01H35/26
Filed: 1957-06-28
Abstract: 829,815. Thermal switches. GENERAL CONTROLS CO. June 28, 1957, No. 20472/57. Class 38 (5). A temperature or other condition responsive means 23 comprises a shell 24 with a flexible wall 26 movable in response to fluid pressure in a temperature-sensing tube 27 and carrying a stud 29 having a shoulder 31 engaging a pivoted lever 32. The lever 32 has ears 38, 39 engaging in a transverse indentation 41, of a further lever 40, against the back of which indentation another lever 67 is urged by a spring 68, so that movement of the lever 32 applies force to both levers 40, 67 on a line between the ears 38, 39. The lever 40 abuts the end 65 of an adjustable temperature setting screw 62 and carries an extension lever 46 pivotable about it at 47 and urged against it by a spring 48 on a pin 51. When the lever 40 is moved in a clockwise direction (Fig. 3) about its pivot abutment 65, under the action of the means 23 acting through the lever 32, the end 55 of the extension 46 operates the pin 56 of a microswitch 57 at a predetermined temperature. Continued movement does not damage the switch since the extension lever can pivot about 47 against the action of the spring 48. The lever 67 moves at the same time as the lever 40 but pivots about its abutment with an adjustable screw 71 to subsequently operate a second micro-switch 74 at a higher temperature. In order that the device may fail to safety if the temperature-sensing element fails and the stud 29 moves to the left (Fig. 2), a strip 76, adjustable by a screw 78, engages the lever 67 which then pivots anticlockwise about the end 77 of the strip to open the switch 74.
Patent GB-1173921-A (GB)
Title: Improvements in or relating to a Process of Reducing Organic Compounds with Alkali Metal Amalgam
Inventor: COWDREY WILLIAM ARTHUR
Filed: 1966-05-09
Abstract: 1,173,921. Dimerization of olefinically unsaturated compounds. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 April, 1967 [9 May, 1966], No. 20488/66. Heading C2C. [Also in Division C7] Organic compounds are reduced in a cyclic process, particularly to effect the hydrodimerization of α,#-olefinically unsaturated esters, amides or nitrites, e.g. acrylonitrile to adiponitrile, with alkali metal (e.g. Na or K) amalgam in a medium containing water, while at least partially neutralizing the alkali metal hydroxide formed in the reaction with CO 2 , e.g. to maintain the pH at 8-9, to form a reaction mixture containing the reduced organic compound and from which mercury and alkali metal bicarbonate are separated, e.g. by filtration and the bicarbonate is electrolysed in an aqueous medium with the mercury as the cathode to regenerate alkali metal amalgam for re-use in the reduction step. A Pt, Ni or C anode may be used immersed in an aqueous solution of sodium carbonate and nitrate in a porous pot placed in an agitated beaker containing the mercury and bicarbonate. The CO 2  liberated at the anode may be used for the neutralization in the reduction step. Oxygen formed at the anode may be not all liberated as gas but may form a per-salt in the electrolyte at -10 to + 30 C., e.g. perborate or persulphate, which may be isolated. The reaction mixture preferably also contains a polar organic solvent, such as acetonitrile, adiponitrile, dimethyl sulphoxide, tetramethylene sulphone, dimethylformamide or dimethylacetamide, and/ or a quaternary ammonium salt, e.g. tetramethyl / ethyl - ammonium chloride / p - toluene sulphonate/bicarbonate.
Patent GB-584987-A (GB)
Title: Improvements in or relating to liquid pressure control systems
IPC: F15B11/15
Filed: 1944-10-23
Abstract: 584,987. Liquid pressure engines; regulating fluid flow. AUTOMOTIVE PRODUCTS CO., Ltd., CLENCH, E. C. S., and SPITTLE, C. T. Oct. 23, 1944, No. 20555. [Classes 69 (ii) and 135] A liquid-pressure motor 15 having alternate working and idling strokes, e.g. for operating a ratchet-and-pawl device 10, 11, is moved on the working stroke by liquid pressure supplied to one end of the cylinder 16 and on the idling stroke by a spring 21, which exhausts the liquid through an adjustable flow restricting device 65 which determines the idling speed. Supply and exhaust of liquid to and from the cylinder is controlled by a valve 36 reversed by pressure liquid applied at its ends under control of a pilot valve 35 actuated at each end of the piston stroke by stops 44, 45 on the pawl mechanism. The exhaust flow restrictor comprises inlet and outlet ports 84, 85 connected by a cylindrical bore containing a member 93 . having a helical groove 96 and adjustable axially to vary the length of throttling passage by a cam 104 opposed by a spring 102. Pressure liquid is supplied by a pump or accumulator 30.
Patent GB-573136-A (GB)
Title: Improvements in and relating to lock-nuts
IPC: F16B39/36
Filed: 1943-12-09
Abstract: 573,136. Self-locking nuts. MINCHIN, A. E. Dec. 9, 1943, No. 20620. [Class 89 (i)] In self-locking nuts of the kind in which a longitudinally split and tapped member is retained within an outer member, the engaging surfaces are conical across the whole depth of the nut. Relative rotation is prevented by a pin e, Fig. 5, driven into a hole formed in part in each member. The parts are retained against axial separation by a spring ring d engaging a groove a<2> in the outer and a chamfer b<3> in the inner member. The pin e may be replaced by flats formed on the upper parts of the members, the flats preferably subtending an angle of 60‹ at the centre. To protect the parts from rust the ring d may be replaced by a disc h, Fig. 12, slit at i to enable it to be sprung into place. If the end of the bolt is required to project, the disc is either formed with a hole closely fitting the bolt or is domed as k, Fig. 16 to pass over it. Specifications 415,754 and 502,477 are referred to.
Patent GB-1116131-A (GB)
Title: Improvements in or relating to irrigation systems
Inventor: MASON ALAN
IPC: A01G25/02
Filed: 1966-05-10
Abstract: 1,116,131. Soil irrigation systems. ALMA IRRIGATION Ltd. 22 May, 1967 [10 May, 1966], No. 20660/66. Heading A1B. [Also in Division F2] An irrigation system particularly for glasshouses comprises pipes 10 laid in the soil and comprising a strip of plastic material (Fig. 2) which is folded double and a marginal portion is folded again and stitched along the marginal portion at 11. In use water oozes out through the stitching into the soil. As shown in Fig. 3 a tube of plastic material is flattened and stitched along a marginal portion. A transverse main pipe is provided with tubes which are inserted into the plastic pipes.
Patent GB-1434613-A (GB)
Title: Method and apparatus for control of biochemical processes
IPC: G01N35/00
Filed: 1973-05-02
Abstract: 1434613 Control of biochemical processes NEW BRUNSWICK SCIENTIFIC CO Inc 2 May 1973 [ 10 May 1972] 20863/73 Heading G3N A plurality of controllable variables of a biochemical process are controlled, to remain within predetermined tolerances, themselves varied in time to suit the epoch of the process in response to computer determination, of the state of the process as defined by calculation of valves appertaining to not directly measurable state variable(s), the computer receiving detected values of the controllable, and measurable state, variables during the process. As described, control variables include temperature and pressure in reaction vessel 72 and a plurality of component addition vessels 74, addition rate of ingredients, flow of air and other gases to the process, and torque and power input to agitator 90. pH and dissolved oxygen and CO 2  (i.e. HCO 3 ), concentrations are also sensed, as are the redox potential and metabolite concentrations. Variables may be directly controlled by the computer, or individual closed loop systems may operate autonomously, process control overall being reflected in the setting, by means of limit switches 144, of tolerances, varying in time, within each variable must lie. Ideal tolerance/time profiles are programmed in the computer, and compared at stage (36) Fig. 1 (not shown) with actual values of the logged process variables, the latter Fig. showing a programme in which information, in form of state and controllable variables is fed out to an operator who can change the time profiles of the tolerances. Controllable variables may be computer controlled under control of an algorithm taking into consideration the calculated state variables to keep them within the tolerances. The programme has also a preliminary sterilization phase. Variables are handled using sequential or random interrogation techniques. The process may be of pilot, or manufacturing scale, the former being used to aid in developing the computer algorithms. The sensor signals are passed to a/d converters, which may also function as digital panel meters, themselves feeding BCD signals to the computer 132. Fig. 4 (not shown) displays exemplary calculated state variables, and Fig. 5 (not shown) shows an automatic control scheme. The control algorithm may choose to control at each epoch a most dominant variable applicable to the state of the process. A single computer may control more than one such process. Applications are to microbe cell propagation, enzyme reactions in cells, such as mushroom propagation, aerobic cell metabolism in submerged cultures, fermentation, plant cell reactions, with or without photo-synthesis, propagation of protozoa, phages and viruses in suspense culture. Samples (114), Fig. 2 (not shown) may be periodically taken out and analyzed by unit (116). Calculated state variables may be representative of the physiological or biochemical state of the process, or of the rheological conditions of the culture liquid.
Patent GB-841038-A (GB)
Title: Textile fibre processing elements
IPC: D01H5/86
Filed: 1958-06-30
Abstract: The working surfaces of spinning rolls, roll covers or cots, drafting aprons, rub aprons and similar devices used in the drawing or condensing of cotton, rayon and wool and other textile fibres comprise a vulcanized butadieneacrylic nitrile copolymer in which is incorporated a minor proportion, e.g. 2-8/100, of nickel dibutyl dithiocarbamate, to prevent glazing. Specifications 563,374, 641,941, 650,024 and 730,520 are referred to.
Patent GB-423105-A (GB)
Title: Improved cooling system for utilising solid carbon dioxide
IPC: F25D3/12
Filed: 1933-07-25
Abstract: 423,105. Jointing. LEES, D. S., Norton Hall, The Green, Norton-on-Tees, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. July 25, 1933, No. 20959. [Classes 83 (iii) and 83 (iv)] [See also Group XIII] Metal articles are cooled by contact with a liquid which does not solidify above about -70‹ C., and has been cooled by solid carbon dioxide. The apparatus may comprise a bath of liquid into which the carbon dioxide and the article to be cooled are placed. Two baths 1 and 2 may also be used one containing the carbon dioxide 3 and the other the article 5 to be cooled. The method may be used to cool and shrink cylinder liners. Drilling.-The method may also be used for cooling metal articles during machining either by immersing them in the liquid or directing a stream of liquid on them during operations such as drilling.
Patent GB-149218-A (GB)
Title: Improvements relating to thermionic receiving apparatus for wireless signalling
IPC: H03F1/08
Filed: 1920-07-12
Abstract: 149,218. Loewe, S. April 18, 1918, [Convention date] Wireless signalling.-In apparatus for receiving wireless signals and employing thermionic receiver and amplifiers, the received oscillations are led to the anode of the receiver, and energy transmitted to the input transformer of the amplifier is taken from the grid circuit of the receiver. This arrangement minimizes retroactive self-excitation, and allows conducting connexion in the input transformer to be retained. An aerial 5 is shown connected to the anode of the receiver 1. The grid circuit 4 of the receiver is coupled through a transformer 6, 7 with the grid of the amplifier 11, and energy is drawn from circuit 4 by means of a condenser 13 connected, on one side directly, and on the other side through the coil 6, to the negative pole of the battery. A series of amplifiers may ba used, a telephone 10 being included in the anode circuit of the last amplifier of the series.
Patent GB-803656-A (GB)
Title: Dehydrocortical hormones
IPC: C07J75/00
Filed: 1955-06-08
Abstract: The invention comprises 17a ,21-dihydroxy-1,4 - pregnadiene - 3,11,20 - trione 21 - cyclopentylformate.  This compound is obtained by esterification of the corresponding 21-hydroxy compound with cyclopentylformic acid anhydride, chloride or bromide, ester by ester exchange, or the acid itself, in the presence of an esterification catalyst.
Patent GB-873098-A (GB)
Title: Grinding mill
IPC: B02C7/08
Filed: 1959-06-19
Abstract: 873,098. Disc mills. MOREHOUSE INDUSTRIES Inc. June 19, 1959 [June 25, 1,958], No.21081/59. Class 59 In a mill having rotary and stationary grindstones 19, 25 respectively, the stone 19 is secured in position relative to a shaft 15 by means of a clamping plate 23 from which project spirally curved impeller vanes 37, preferably of involute form, which assist the feed of material from a hopper 42 to the space between the grindstones. The stone 19 is adjustable axially relative to the stone 25.