baber/WOPTO huggingface dataset:
Patent GB-580275-A (GB)
Title: Thermosetting plastic composit ons comprising polyvinyl acetal and ketal resins
IPC: C08K5/21
Filed: 1944-06-05
Abstract: Polyvinyl acetal or ketal resins are mixed with dimethylol urea or a lower alkyl or aralkyl ether thereof at a temperature below 80 DEG C. followed by curing at a temperature above 80 DEG  C.  The hydroxyl number of the resin exceeds 60.  Acetals and ketals are prepared from formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, acetone and methyl ethyl ketone.  Urea derivatives specified are di-(methoxymethyl), di(ethoxymethyl), di(n-propioxymethyl), di(n-butoxymethyl), di(n-amyloxymethyl), di(iso-propioxymethyl), di(iso-butyroxymethyl), di(sec-butoxymethyl), di(n-decyloxymethyl), di(benzyloxymethyl) ureas.  Acidic catalysts such as betaphenyl-betabrompropionic acid, bromnaphthols, ammonium chloride, or phosphoric acid may be added during curing.  Plasticisers, pigments and fillers may be added.  Those specified are dibutyl sebacate, di(methoxyethyl) sebacate, di(butoxyethyl) sebacate, di(methoxyethyl) phthalate, di(ethoxyethyl) phthalate, di(butoxyethyl) phthalate, methyl phthalyl methyl glycollate, butyl glycollate, di(butoxyethoxyethyl) glutarate, butoxyethyl stearate, triethylene glycol di(2-ethyl butyrate), hydrogenated methyl abietate, castor oil, linseed oil, blown cotton-seed and blown corn oils, tricresyl phosphate, triphenyl phosphate, tri(tert.-butyl phenyl) phosphate, chlorinated diphenyl; whiting, ground mica, clay, lithopone, barytes, zinc oxide, magnesium carbonate, magnesia, titanium oxide, carbon black, graphite, ground leather.  Ethyl alcohol may be used as a solvent in initial mixing.  Such compositions may be used for coating fabrics, wood and paper. Sheeting, extruded tubes, tapes, adhesives, soles and heels of shoes, balls, fruit jars and gaskets may also be made. Specification 537,971 is referred to.
Patent GB-996754-A (GB)
Title: Improvements in or relating to lift doors
IPC: B66B13/14
Filed: 1963-03-19
Abstract: 996,754. Lift door operating mechanisms. DEWHURST & PARTNER Ltd. and A. DEWHURST. March 11, 1964 [March 19, 1963], No. 10785/63. Heading E2M. The system relates to holding means for lift doors in which the brake or locking means is operable when energized and is mechanically biased to be inoperable when de-energized. In one embodiment the locking means consists of an electromagnetically operated brake which applies a braking force to the door drive means when the brake is energized, the brake being maintained in a de-energized released condition during door opening and closing. The door is held in both the fully open and closed position and also during any dwell period with the lift car static. The brake has an electrical winding 13 connected in series with the winding of the door motor field windings 11 and has a shunt connection there around which includes normally open brake actuator switch contacts 14. Thus with these windings energized and the motor armature 12 de-energized the brake will be effective for holding the door. The door motor armature 12 is energized for door movement and at the same time the brake winding 13 is effectively de-energized by short-circuiting the connections shunting the brake winding. With both brake winding and motor field windings powered by a common supply, failure of this supply is accompanied by brake release. An electrically-operated latching means may be used instead of a brake, such means being biased to the non-locking position by a spring or weighted lever system.
Patent GB-882507-A (GB)
Title: Improved machine for producing elastic bands
IPC: B26D1/00
Filed: 1959-03-31
Abstract: 882,507. Cutting machines. POLKEY, E. H. June 28, 1960 [March 31, 1959], No. 10839/59. Class 31 (1). In a machine for producing elastic bands, of the kind comprising a vertical knife 2 reciprocable vertically relatively to a horizontal knife 4 and feed rollers 5, 6 operable in timed relation with the reciprocations of the knife 2 for progressively and intermittently feeding a flattened elastic tube T between the knives, the knife 4 is mounted on a slide 3 which is spring-biased towards the knife 2 so as to maintain the knife edges in contact, under pressure, during each cutting action to sever a band from the tube, and means are provided, operable in timed relation with a reciprocable carriage 1 for the knife 2, for pushing the slide back against the spring action and thereby relieving the pressure between the knife edges at times when these are not required to cooperate. The slide 3 is biased towards the knife 2 by means of a pair of manually-adjustable compression springs 24 and is adjustable by means of manually-operable screw means 32a. The slide is pushed back against the springs 24 by means of a vertical tapered cambar 35 mounted on the carriage and a cooperating roller 36 provided on the slide. The cam-bar is pivotally mounted at its upper end relative to a carrier plate 38 and is pivotally adjustable by means of manually-operable screw means 41, 42 acting in conjunction with a spring 46. The plate 38 is adjustable by manually-operable screw means 47, 48. Alternatively, the cam-bar may be mounted on the slide and the roller on the carriage. A carrier 17 for the slide is angularly adjustable to enable the cutting edge 4a of the knife 4 to be set at the required shearing angle. The carriage 1 is operated from a crank-shaft 7 through a connecting rod 55. Means are provided for guiding the tube T between the knives and holding it down upon the top of the knife 4 prior to each cutting action.
Patent GB-1174946-A (GB)
Title: Improvements in Process Program Controller
Inventor: SCHNEIDER ALFRED
IPC: G05B19/07
Filed: 1967-03-08
Abstract: 1,174,946. Alkyd resins. WIENER SCHWACHSTROMWERKE G.m.b.H. 8 March, 1967, No. 10871/67. Heading C3R. [Also in Division G3] Apparatus for the control of batch chemical processes in the manufacture of condensation polymers and addition polymers comprises a vessel for the charge, which is provided with a heating system, an aerator, a cooler and a discharge device, and a programme controller which actuates those devices corresponding to the next programme step when actual measured values are attained corresponding to the programmed desired values of the charge. As shown, a stirring vessel 1 is provided with a stirrer 3 driven by a motor 2. The vessel 1 is heated by an induction coil 4 energized through a switch 5. The temperature of the contents of the vessel is measured by a device 6. A process being carried out in the vessel is controlled by a programme controller 7 so that at a predetermined temperature a viscosimeter 8 is rendered operative and at a programmed viscosity value the switch 5 is opened to deenergize the coil 4. The temperature of the vessel falls and at a predetermined value the controller 7 energizes a timing relay 11 to alert a metering pump 9 which discharges a polyalcohol from a tank 10 into the vessel 1 for a predetermined time. After a further interval the relay 11 causes a valve 12 to open which controls supply of coolant to a cooler 13. At a predetermined temperature, a timing relay 16 starts a metering pump 14 which charges from a tank 15 another ingredient into the vessel 1; the duration of this operation being controlled by a timing relay 16, and the temperature controlled to that prevailing at the commencement of the operation. During the ensuring condensation, liquid is liberated and condensed in condenser 17 and collected in container 18. The amount of water is measured by pressure transducers 19. When the predetermined amount of liquid has been collected the switch 5 is closed to reheat the vessel, the viscosity is again measured and at a predetermined value the switch 5 is opened. At a predetermined temperature a valve 20 is opened to discharge the contents of the vessel and complete the process. In examples the system is used in the manufacture of alkyds from (1) glycerin, phthalic anhydride and lauric acid; (2) glycerin, phthalic anhydride, linseed fatty acids and hydroxyacetic acid.
Patent GB-473609-A (GB)
Title: Improvements in semi-automatic variable speed power transmission
IPC: F16D67/00
Filed: 1936-04-15
Abstract: 473,609. Hydro-mechanical variable-. speed gearing. DUFFIELD, W. A. April 15, 1936, No. 10881. [Class 80 (ii)] In transmission mechanism which varies in ratio automatically when a valve 88, Fig. 3, is closed over a vent 89, but remains in low speed when that valve has been manually opened, the driver 30, Fig. 1, of a fluid coupling is fast on the tail shaft 2, the runner 31 of the coupling is rigid through a bell 32 with the carrier 4 of planetary gearing and this gearing connects to the tail shaft 2 so that on the runner 31 taking up the speed of the driver 30, the planetary reduction gearing is caused to turn solid by the automatically picked-up hydraulic drive. The carrier 4, which carries stepped planets 41, 42 meshing respectively with gears 10, 20 fast on a driving-shaft 1 and on the tail shaft 2 is adapted to be held against backward rotation by a one-way brake 62 which is operative on low speed and overruns on higher speeds. This low speed is brought in to commence the drive by expanding a brake shoe 65 against a drum 6 which renders the one-way brake 62 operative. As the hydraulic coupling picks up the drive, the brake 62 overruns and the speed ratio increases without any manual gear changing provided the coupling has been kept supplied with oil through a duct 82, Fig. 3. Oil is circulated by vanes 57 on a drum 5 rigid with a sun gear 53, Fig. 1, which meshes with a third planet step 43. During forward driving, the vanes 57 pump oil into a trough 8 and along the passage 82, Fig. 3, and through passages 83, 87, Fig. 1, into the coupling. So long as the valve 88 is in the raised position shown in Fig. 3, the coupling is kept full of oil excess of which escapes through vent plugs 36 and around the driver 30 to the toothed gearing. Lowering the valve 88 by emptying the coupling cuts out the automatic speed changing action with automatic return to low speed by the one-way brake 62. On expanding a shoe 55 manually to hold the drum 5 and gear 53, and releasing the shoe 65 the planetary gearing operates to drive the gear 20 and shaft 2 reversely, while the coupling speedily empties since it is not supplied with oil on this reversed drive.
Patent GB-876976-A (GB)
Title: Improvements in electrically-heated steam generators
IPC: F22B37/42
Filed: 1959-03-31
Abstract: 876,976. Electrically heated steam generators. DEHN, S. G. (Reimers Electric Appliance Co. Inc.). March 31, 1959, No. 10910/59. Class 39(3). An electrically heated steam generator contains an electric heating element 21, Fig. 3, within the boiler 17, and a thermostat operated by changes of pressure of liquid in tube 26a, the other end of which is in contact with and preferably fastened to the electric heating element 21. The thermostat has a bellows type member 26<SP>1</SP> actuated by liquid in copper pipe 26a to cut off the current when all the water in boiler 17 has evaporated. The electric heating element 21 has an associated alloy resistor 21d. Resistor 21 heats casing 17 which heats the water. Automatic control of the water level in the boiler is obtained by'electrode 27 having a water contacting disc 27a. When the water level falls relay 28 operates solenoid controlled water valve 30 to allow additional water to flow into boiler 17 from pipe 31a, valve 30 closing when the water level rises to contact disc 27a. Emergency tank 39 is fed by steam from pipe 40 from boiler 17 so .as to equalise the pressure. 44 is a safety valve and 25 a drain, while steam goes through 17d, 43 to industrial pressing machines or 'sadirons'. The top and two sides of the outer casing (not shown) surrounding the boiler are vertically slidable to allow inspection of the boiler. In a modification, Fig. 4 (not shown), the water level is controlled by a float and lever, the outer end of the lever being one contact of a switch.
Patent GB-200892-A (GB)
Title: Process for treating iron, steel and the like to produce a protective surface layer thereon
IPC: C23C22/62
Filed: 1922-04-19
Abstract: 200,892. Mai, A. April 19,1922. Coating.-Iron, iron alloys, and steel are treated to produce a protective layer thereon in an alkaline bath, e.g. caustic soda, containing an oxidizing agent and also slaked lime or other caustic alkaline earth. The oxidizing agents may be bichromates, permanganates, nitrates, nitrites, peroxides, chlorates &c. and also organic oxidizing agents, e.g. nitrocellulose, nitrophenol, nitrotoluol or organic peroxides. The bath is employed at temperatures of 120-130‹ C. or higher, such as 180-200‹ C., the treatment at higher temperatures and with more concentrated baths occupying less time than the treatment at lower temperatures. The oxidation and coloration of the metal surface takes place more rapidly if small quantities of decomposition products of the oxidizing agent are added to the bath at the beginning of the operation. The same result may be obtained by adding small quantities of an iron salt, e.g. ferric nitrate. Brighter colours are obtained if the metal is first provided with a preliminary protective coating, e.g. by immersion in dilute copper sulphate solution or by heating in air. The bath subsequently employed is preferably concentrated and employed at 180-200‹ C. On removal from the bath, the objects may be immersed in dilute acetic acid or other liquid to dissolve any adhering lime, and then washed in water, dried, and lacquered, varnished or oiled.
Patent GB-594646-A (GB)
Title: Improvements in or relating to directional microphones
IPC: H03F1/36
Filed: 1944-06-09
Abstract: 594,646. Circuits for microphones. WESTERN ELECTRIC CO., Inc. June 9, 1944, No. 11116. Convention date, June 24, 1943. [Class 40 (iv)] A directional microphone comprising a diaphragm with both of its surfaces in communication with the atmosphere, one substantially directly and the other through acoustic phaseshifting means so that the resultant acoustic force exerted on the diaphragm due to the incident sound waves is dependent on the angle of incidence of the sound waves, is provided with means for applying to the diaphragm a controlling force which is derived from the microphone output and which is varied with frequency so as to equalize the response of the microphone at different frequencies. As shown in Fig. 1, the diaphragm 14 of a condenser microphone is clamped between a ring 15 and a shoulder 13 on a casing 10 closed at the rear by a plate 11 and forming a chamber with access to the atmosphere through peripherally spaced holes 12 covered by acoustic resistance material 41, such as silk. The perforated metallic electrodes 16, 17 of the microphone are spaced from the diaphragm 14 by washers 20 and are mounted within rings 18 by means of insulating supporting rings 19, preferably of polystyrene, the electrodes being clamped against the washers 20 by externally threaded rings 21. In the circuit arrangement shown in Fig. 3, the output from the electrode 16 of the microphone and an associated amplifier 43 is partly fed back to a circuit 44 comprising a capacitance 45 and a shunt resistance 46 connected to the second electrode 17 of the microphone. In a microphone with a cardioid response, the arrangement can be such that the total phase shift due to the acoustic network and to the difference in length of the sound-wave path to the opposite faces of the diaphragm is proportional to frequency with the result that the driving force applied to the diaphragm decreases as the frequency increases. The response curve for such a microphone in a direction normal to the diaphragm and without feedback is somewhat as indicated in curve A of Fig. 4, the peak occurring at the resonant frequency of the diaphragm. It is analytically shown that a flat response, as indicated by curve B of Fig. 4, is obtained if the feedback network 44 has a transmission characteristic increasing with frequency to compensate for the decrease of acoustic driving force as the frequency increases. The curve C indicates the equalized response for sound incident at an angle to the normal axis. The diaphragm 14 provides a shield between the electrostatic fields on its opposite sides so that the output to the amplifier is modified solely in accordance with the mechanical controlling influence exerted on the diaphragm by the feedback voltage. As the feedback circuit can be designed to provide a level response, an improved signal-to-noise ratio can be obtained by suitable modification of the microphone characteristics to this end, for example in the choice of dimensions and material of the diaphragm.
Patent GB-645452-A (GB)
Title: Improvements in or connected with covers for powder compacts or powder cases
IPC: A45D33/26
Filed: 1948-04-23
Abstract: 645,452. Powder compact brush. STRAUS, S. April 23, 1948, No. 11187. [Class 19] [Also in Group XVII] An outer cover 1 in which is carried a powder compact or powder case 4 has a brush 2 secured, as by sewing or adhesive, to the lower end. The upper end is left open for entry of the compact. The cover is of leather, plastic, cloth or fabric. The stock of the brush may be rigid or flexible.
Patent GB-1411849-A (GB)
Title: Furnace particularly for combustion of garbage and sewage sludge
IPC: F23G5/32
Filed: 1973-03-08
Abstract: 1411849 Incinerators ARBMAN DEVELOPMENT AB 8 March 1973 [13 March 1972] 11238/73 Heading F4B A furnace for combustion of refuse comprises a cylindrical combustion chamber 1 having a tangential inlet 3 for the refuse, a duet 10 for admission of combustion air, and a burner 5 for the ignition of the refuse. The length of the chamber is equal to or shorter than the radius. The refuse is deflected by lip 2a towards the wall of the combustion chamber 1 and entrained in the stream of combustion air entering through the perforations 11, the burning refuse then passing through the chamber in a spiral pattern to the outlet 9. Combustion air may be preheated by passing through a duct 12 surrounding the combustion chamber. An embodiment in which the combustion chamber is vertical is also disclosed, solid matter being removed from a collecting cone in the lower end wall.
Patent GB-647855-A (GB)
Title: Improvements in and relating to the trip mechanism of electrical circuit-breakers
IPC: H01H71/40
Filed: 1948-04-23
Abstract: 647,855. Automatic circuit breakers. COMBI, A. April 23, 1948, Nos. 11253/48 and 6917/49. [Class 38(v)] A circuit-breaker comprises a spring- urged pivoted contact arm a which is held closed by toggle links c, d, which may be collapsed by the tail f<SP>3</SP> of a spring-urged bell-crank lever f normally held inoperative by the engagement of a tongue g' thereon by a catch. In Fig. 4, the tongue g<SP>1</SP> engages a hole in a spring blade j which is arranged to be moved to the left either by (a) a rod r on energization of an earthleakage coil p<SP>1</SP> or an overload winding such as p<SP>2</SP>, Fig. 9, or (b) a bimetal strip such as t, Fig. 9, on a moderate overload. In Fig. 9, the lever f is held by a rigid blade n fixed to a lever o. In each arrangement, the tongue g<SP>1</SP> is bent out of the line joining the pivot f and the junction of the tongue and its catch, so as to obtain maximum sensitivity consistent with natural stability. The circuit-breaker is reset by a handle s, connected to the toggle-link d by a link d<SP>2</SP>, the handle after tripping first being rotated counter-clockwise so as to straighten the toggle and cause a lever b to re-engage the tongue g<SP>1</SP> with its catch, and then clockwise to reclose the contacts. According to the first Provisional Specification the lever f may be latched by a further lever which is itself retained by a pivoted catch.
Patent GB-1224793-A (GB)
Title: Condensate purification process
IPC: B01J49/00
Filed: 1968-03-07
Abstract: 1,224,793. Ion-exchange. CRANE CO. 7 March, 1968, No. 11262/68. Heading B1J. A mixed bed of cation and anion exchangers is separated into two beds. The upper portion of the upper bed (anion) is regenerated with alkali and excess regenerant is removed. The lower portion of the bed (cation) is regenerated with acid and excess acid regenerant is removed. The cation exchanger is then regenerated with ammonia before mixing again for the demineralising process. The portions of the upper bed may remain in contact during regeneration.
Patent GB-551674-A (GB)
Title: Improvements in or relating to a mechanical method for use in the separation of the sell and flesh of crustacea or the like
IPC: A22C29/04
Filed: 1941-09-04
Abstract: 551,674. Crushing and dressing shell fish. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Sept. 4, 1941, No. 11338. [Class 28 (ii)] In order to separate the shell and flesh of crustacea the shelf is first crushed by mechanical treatment and thereafter the flesh together with the crushed shell is treated in a separator acting on the difference between the specific weights of the shell and the flesh. In the arrangement shown in Fig. 5 the shellfish are carried by a conveyor 14 under a crushing block 15, teeth 16, 17 being provided on the block and the conveyor links. The crushed material passes into a separator 3 containing a common salt solution in which the shell parts 4 settle and the flesh 5 floats on the surface and flows over into a space 6 provided with an outlet 7 for the liquid. The shellfish may be crushed by inter-geared rollers, Fig. 1 (not shown), or by the means shown in Fig. 3 in which the fish are conveyed by an endless band 9 past fixed guides 11 and laterally-reciprocating guides 10 to a crushing device comprising laterally-reciprocating jaws 13 co-operating with fixed jaws 12. U.S.A. Specifications 2,047,688 and 2,051,676 are referred to.
Patent GB-1204202-A (GB)
Title: Substituted diphenylthioethers and their use in pesticidal compositions
IPC: A01N33/22
Filed: 1968-03-08
Abstract: 1,204,202. Diphenyl sulphides. CIBA Ltd. 8 March, 1968 [8 March, 1967], No. 11394/68. Heading C2C. [Also in Division A5] The invention comprises compounds of formula wherein X is halogen, C 1-12  alkyl, OCH 3 , NO 2  or CF 3 , Y is halogen or C 1-4  alkyl and n and m are 0 or 1. The compounds are prepared by reacting 4- chloro - 3 -trifluoromethylnitrobenzene with a mono- or di-substituted thiophenol. They are used in fungicidal compositions (see Division A5).
Patent GB-527559-A (GB)
Title: Improvements relating to the wheels of perambulators and the like
IPC: B60B27/02
Filed: 1939-04-14
Abstract: 527,559. Vehicle wheels. MORRIS, E. T. April 14, 1939, No. 11412. [Class 144 (i)] [Also in Group IV] Perambulator and like wheel hubs are moulded from a phenol-formaldehyde condensation product or like material with or without canvas &c. or metal reinforcement. In the construction shown, the moulded hub body a is recessed at a', a<SP>2</SP> to seat the outer ball-races b, and at a<SP>3</SP>, a<SP>4</SP> for the spoke-flanges e<SP>1</SP>, e. The inner races b' are retained by the swaged ends of a split sleeve d. The cap f may also be formed of thermo-plastic material.