baber/WOPTO huggingface dataset:
Patent GB-434884-A (GB)
Title: Improvements in automatic voltage regulators
IPC: G05F1/247
Filed: 1934-03-14
Abstract: 434,884. Antomatic regulation. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, DAVIS, G. E., and GIBSON, J. W., c/o General Electric Co., Witton, Birmingham. March 14, 1934, No. 8069. [Class 38 (iv)] A voltage regulator for A.C. current comprises a transformer with a secondary winding 2 in series with the load 1 and a primary winding 3 supplied with current controlled by tap changing means operated by the load current or by a current derived therefrom. The regulating current in the primary 3 depends upon the position of the drum type switch which is rotated by a torque motor 4 having an unsaturated magnetic circuit against weights 20, 21. The pull of the weight 20 is exerted through a cam of varying radius in such a way that the torque decreases as the weight is raised, while the cord through which the weight 21 acts is free in the first running or low voltage position 1 and taut in the second or intermediate voltage running position 5, and also in the third or high voltage running position 8. In the first running position 1, the primary 3 is shortcircuited, in the second running position 5 it is connected across the mains, and in the third running position 8 only the left-hand section is operative. In the first, second and third transitional positions 2, 3, 4, and the fourth and fifth transitional positions 6, 7, the connections, primary 3 and the unsaturated choke 16 are appropriately varied. The transformer tappings may be controlled by contactors operated by solenoids operating at different current values.
Patent GB-164537-A (GB)
Title: A new or improved retaining device for holding the supports of motor cycles in inoperative position
IPC: B62H1/04
Filed: 1920-03-19
Abstract: 164,537. Tonery, W. J. March 19, 1920. Supports for motor-cycles are retained in inoperative position by a device consisting of a casting or steel drop forging 2 which is attached to the mud-guard and provided with a hollow boss 4 and a recess 5 at right-angles thereto, the boss being fitted with a spring-pressed ball 7 or a round-nosed plunger protruding into the recess to engage with the cross - bar 6 of the support. A screwthreaded plug 10 provides for the adjustment of the pressure of the spring 9.
Patent GB-419919-A (GB)
Title: A box primarily for pharmaceutical products or other articles
IPC: B65D81/133
Filed: 1934-03-15
Abstract: 419,919. Internal fittings for boxes. LABORATORIES GALENIGUES VERNIN, 16, Quai St.-Ambroise, Melun, Seine-et-Marne, France. March 15, 1934, No. 8216. Convention date, Dec. 28, 1933. [Class 18.] A box for soft pharmaceutical products &c. is fitted with a tray of celluloid, synthetic resin or metal formed with recesses 5 shaped to receive the contents and with an upstanding flange 4 which resiliently engages the walls of the case. Additional trays may be superposed and the box may be partitioned.
Patent GB-1330273-A (GB)
Title: Magnetic window cleaning device
IPC: A47L1/12
Filed: 1972-02-22
Abstract: 1330273 Window cleaning apparatus J S DOYEL 22 Feb 1972 [3 Dec 1971] 8228/72 Heading A4F A manually operated magnetic window cleaning device for simultaneously cleaning both surfaces of a window 14 comprises substantially identical master 10 and slave 12 units. Each unit 10, 12 comprises an annular multi-pole magnet 38 affixed within a rigid frame including a substantially flat surface 20 and a ridge 22. A cleaning pad 28 extends over the ridge 22, thereby providing a primary cleaning surface, being clamped in position by a hinged holder 26. The surface 20 may be provided with indents, holes 20c, or ridges etc. to increase the friction between surface 20 and pad 28 thereby producing a secondary cleaning surface. A glide pin 24a minimises friction between the window and units 10, 12. Unit 10 is provided with a handle 18.
Patent GB-774072-A (GB)
Title: Improvements in or relating to electromagnetic switches adapted to trip under fault conditions
IPC: H01H71/68
Filed: 1952-04-01
Abstract: 774,072. Automatic circuit-breakers; electromagnetic switches. WEST & CO., Ltd., A., PAVITT; F. J., and BERRY; A. W: J. March 19, 1953 [April 1, 1952], No. 8275/52. Class 38(5)  The normally-closed stop contacts 9, 10 in circuit with the closing coil 1 of an electromagnetic switch having three main bridging contacts 2 and a fourth contact 8 which completes' a circuit across the normally-open start contacts 4, 5 to maintain the coil 1 energized after the start button has been pressed and then released, comprise a flat plate constituting the contact 10 and an integral latch arm 16, the plate 10, 16 being pivoted at 17 and having an extension 32 whereby it is biased counterclockwise by a spring 34. The plate 10, 16 is normally latched as shown in Fig. 2 by the arm 16 engaging a trip bar 14 which overlies plungers 13 of overload coils 12 connected in the three phases, the ends of the bar being in-turned and pivoted at 14b. The contact 9 has an upper extension 26 pivoted at 15 and biased clockwise by a spring 27 so that when the plate 10, 16 is latched the contact 9 engages contact 10. The stop button 11 co-operates with the bent-over end 35 of a horizontally movable' member 18 constituted by a plate, a pin 37  on the member 18 having lost-motion connection with a horizontal slot in the plate 10,16. On an overload of sufficient dura- 'tion determined by the dashpots 12a the trip bar 14 is lifted by one or more plungers  13 and the arm 16 is released whereby the contact 10 disengages contact 9 to de-  energize coil 1 and open contacts 2, 8, Fig. 5. The contact 9 also moves into a vertical position in which it is arrested by a stop 'and thus prevented from following the contact 10. If on overload the button 11 is held so that member 18 cannot move, the con- 'tact 10 is still able to disengage contact 9 owing to the lost-motion connection be-  tween 18 and the plate 10, 16. On opening of the contacts 2 the bar 14 returns and the contacts 9, 10 are reclosed by pressing button 11 which re-latches the arm 16. When  the member 18 is moved to the right during this reclosing. operation an insulating wheel 20 on an arm 19 carried by the member 18 engages the contact 9 and holds the latter away from the contact 16 until pressure on the button 11 is released. whereupon spring 27 moves contact 9 to engage the contact 10. The start button may now be pressed to reclose the contacts 2, '8, and the latter may be subsequently ,opened as desired by pressing the button 11 to disengage the contact 9 from contact 10, the wheel 20 engaging the contact 9 before the lost-motion connection with 10 is taken up.
Patent GB-1211779-A (GB)
Title: A method for the automatic control and regulation of a malting process
Inventor: LEUE GERHARD
IPC: C12C1/00
Filed: 1968-02-21
Abstract: 1,211,779. Malting. FORSCHUNGS INSTITUT FUER DIE GAERUNGSINDUSTRIE ENZYMOLOGIE UND TECHNISCHE MIKROBIOLOGIE. Feb.21, 1968, No.8346/68. Heading C6E. An automatically controlled and regulated malting process is described in considerable detail. The preferred processing conditions are as follows: washing and steeping of the grain with water at a determined temperature between 8 and 35‹ C., treatment of the grain with soda lye at a determined concentration between 0À1 and 1% and a determined temperature between 8 and 35‹ C., germination of the grain at a moisture content of 41-45% over a temperature range of from 14‹ C. in the first of the germination zones to 18-20‹ C. in the last, and drying of the germinated grain with hot air at determined temperatures ranging from up to 45‹ C. in the first of the drying zones up to 84‹ C. in the last zone, with the proviso that the moisture content of the material leaving the first and last drying zones is reduced to values of 20-22% and 4% respectively. In each case the method of control and regulation is specified.
Patent GB-1425369-A (GB)
Title: Resistance heating of elongate metal sections
IPC: H05B3/00
Filed: 1973-02-20
Abstract: 1425369 Rolling metals BRITISH STEEL CORP 20 Feb 1974 [20 Feb 1973] 8366/73 Heading B3M [Also in Divisions H3-H5] An elongate metal section 1, prior to rolling, is heated by passage therethrough from a main power supply of a lengthways electric current between pairs of electrodes 2, 3 clamped adjacent each end, each end being further heated by a current from an auxiliary power supply which is conducted between the electrodes of each pair.  High voltage A.C. to heat the length of the metal section is supplied from a main transformer 4 to a centre tapping on the secondaries of low voltage output transformers 5, 6, which are supplied with current from a further transformer 7 to heat the ends of the metal section.
Patent GB-626445-A (GB)
Title: Ceramic cutting tools
IPC: B23P15/30
Filed: 1944-05-03
Abstract: A metal cutting tool is formed by calcining alumina, grinding finely, adding up to 10 per cent, preferably 1 1/2 per cent, by weight of powdered aluminium, chromium, or magnesium before or after calcining, shaping, and firing under oxidizing-conditions to a temperature of 1,550 - 1,750 DEG  C., preferably 1,650 DEG  C., and for a period of 7 - 10 hours.  The mixture may be heated in an oxidizing atmosphere to a temperature of 750 DEG  C. and reground before shaping and final firing.
Patent GB-680415-A (GB)
Title: Device for use in the removal of rail fastening spikes
IPC: E01B29/26
Filed: 1951-04-11
Abstract: 680,415. Spike extractors. ELASTIC RAIL SPIKE CO., Ltd. (Dow, J.). April 11, 1951, No. 8468/51. Class 61 (iii). A tool for extracting rail fastening spikes 7 comprises a lever arm 1 having a toe 5 adapted for insertion under the arched head of a spike and two prongs 8 secured one at each side of the lever and adapted to lie close to or in engagement with the upper face of the head when the toe is engaged beneath the head. Each arm is cranked at 8c and has an upwardly curved portion 8b. The undersurface of the end of each prong lies slightly below and the upper surface slightly above the domed upper surface of the end of the toe 5.
Patent GB-144988-A (GB)
Title: Improvements relating to boilers, stoves and the like
IPC: F24H9/18
Filed: 1920-03-23
Abstract: 144,988. Duckworth, A. H., and Marwood, F. T. March 23, 1920. Doors; ashes, removing.-The base or stand B upon which a sectional or other boiler A, or a stove or the like, is mounted is provided at the back with a plate C wholly or partly removable to facilitate the removal of clinker at the back end of the grate. As shown, the upper part c of the plate is hinged, and a hit-and-miss grating c is fitted in the lower part. The part c may be hinged at the top, or at either end, or may be a sliding piece, or be removable.
Patent GB-233109-A (GB)
Title: Improvements in or relating to garages and the like
IPC: E04H6/04
Filed: 1924-04-04
Abstract: 233,109. Greig, K. C. April 4, 1924. Garages. - A garage is formed of two sheetmetal hoods, one a being fixed while the other b is hinged horizontally at c to it, so that the open ends of the hoods are adjacent and facing. One hood is slightly larger than the other so as to enclose it when rotated into the open position. Each hood is provided with a flange f, which flanges fit together to prevent the entrance of rain when the garage is closed.
Patent GB-555888-A (GB)
Title: Method of making runners for blowers
IPC: B23K5/00
Filed: 1942-06-23
Abstract: 555,888. Making runners for blowers &c. SCINTILLA, Ltd. June 23, 1942, No. 8605. Convention date, Oct. 25, 1941. [Class 83 (ii)] [Also in Group XXVI] In a method of making runners for blowers and the like, a disc 2 mountable on a shaft 1 is provided with chamfered slots 12, the blades 3 being then drawn through the slots and welded, Fig. 4, round the boundaries of the slots. If the blade channels 4 are of the closed type as shown on the left of Fig. 1, the blades are provided with ears 13, Fig. 4, which extend into chamfered milled slots in the closing disc 15 and are welded at 14. The completed runner may be finally heat treated. In a modification a runner of the closed type has curved vanes fitting in correspondingly curved slots and the cover discs have holes to receive welding metal which secures the discs. The disc 2 may taper towards its periphery.
Patent GB-563494-A (GB)
Title: Rubber-like compositions
IPC: C08L21/00
Filed: 1942-06-23
Abstract: A rubber-like composition comprises an intimate mixture of a rubber-like polymer or copolymer of a conjugated diolefine and a rubber-like thermoplastic composition prepared as described in Specification 543,186.  The polymers may be those of butadiene, methyl or dimethyl-butadienes or chlorobutadiene or copolymers thereof with styrene, acrylonitrile, chloro - acrylonitrile, acrylic or methacrylic esters, or isobutylene.  The components are preferably mixed on a rubber mill.  Vulcanizable compositions may be made by addition of stearic acid, paraffin, zinc oxide, sulphur, carbon black, dibutylamine and benzothiazyl disulphide, calcined magnesia, wood resin, coconut oil and titanium dioxide. The preparation of alkyd resins is described (1) by heating together phthalic anhydride, acids formed as by-products in the preparation of sebacic acid from castor oil, ethylene glycol and glycerine; (2) phthalic acid, sebacic acid, castor oil and glycerine.  The rubber-like copolymers may be those made from butadiene (85 to 50 parts) and acrylonitrile (15 to 50 parts); butadiene (85 to 60 parts) and styrene (15 to 40 parts); isobutylene (99 to 95 parts) and butadiene, isoprene or piperylene (1 to 5 parts).ALSO:A rubber-like composition comprises an intimate mixture of a rubber-like polymer or co-polymer of a conjugated diolefine and a rubber-like thermo-plastic composition prepared as described in Specification 543,186, [Group IV].  The polymers may be made of butadiene methyl or dimethyl-butadiene or chlorobutadiene or polymers thereof with styrene, acrylonitrile, chloro - acrylonitrile, acrylic or methacrylic ester, or isobutylene. The components are preferably mixed in a rubber mill. Vulcanizable compositions may be made by addition of stearic acid, paraffin, zinc oxide, sulphur carbon black dibutylamine benzothiazyl disulphide calcined magnesia, wood resin, cocoa-nut oil and titanium dioxide.  The preparation of alkyl resin is described (1) by heating together phthalic anhydride, acids formed as by-products in the preparation of sebacic acid from castor oil, diethylene glycol and glycerine; (2) phthalic acid, sebacic acid, castor oil and glycerine.  The rubber-like copolymers may be thus made from butadiene (85 to 50 parts) and acrylonitrile (15 to 50 parts); butadiene (85 to 60 parts) and styrene (15 to 40 parts), isobutylene (99 to 95 parts) and butadiene, isoprene or piperylene (1 to 5 parts).
Patent GB-1119807-A (GB)
Title: Thermostatic control device
IPC: F16K31/64
Filed: 1966-02-28
Abstract: 1,119,807. Valves. ROBERTSHAW CONTROLS CO. 28 Feb., 1966 [3 March, 1965], No. 8737/66. Heading F2V. A valve 90 controlling the fuel or electricity supply to a water heater is controlled by a rod and tube thermostat 124, 126 through a snapacting mechanism 102 while a valve 36 upstream of the valve 90 normally held open by a coil 48 energized by a pilot flame thermocouple 60 is caused to close if the water temperature reaches a dangerously high value by a bimetallic switch 138 which also controls the energization of the coil 48. A manually-actuated plug cock 88 is also included in the fuel line while a manually actuated push-button 84 permits the valve 36 to be held open until the pilot burner is lit and the coil 48 thereby energized. The bimetallic switch may be arranged as shown in Fig. 5 to open circuit the coil 48 or to short circuit the thermocouple 60 and is provided with tabs to engage the thermostat tube which is wholly immersed in the water tank and connected thereto by a threaded shank 128. A rubber seal 174 prevents contamination of the switch contacts while an earthing screw 172 connects a bracket 170 at the inner end of the switch to the shank 128. The switch may close the valve 36 at a temperature of, say, 210‹ F., while the thermostat closes the valve 90 at a temperature which may be adjusted by a knob 122, a shaft 118 and a lever 112 and is normally about 140‹ F. The blade 138 of the switch has opposed arcuate portions 140 crimped around the end of conductor 136 and, except for its movable end, is surrounded by an insulating covering 144.
Patent GB-203007-A (GB)
Title: Improvements in and relating to the shut-off valves of petrolengines and in the letter-lock safety-mechanism of motorvehicles
IPC: B60R25/042
Filed: 1922-03-28
Abstract: 203,007. Connell, H. W., and Connell, F. K. March 28, 1922. Locking.-The push and pull spindle a of a petrol cock n can be locked in the closed position by the engagement of spring pressed pawls b in annular grooves. c<3> in the inner of concentric rings c<1>, c<2>. The outer rings c<2> which bear a series of letters or numerals are made capable of rotation in one direction only through the action of a check bar f and teeth c<5>. This rotation also moves the inner rings c<1> by the engage. ment of pawls d in teeth c<6>. When the key-word is formed by the letters on the outer ring, the valve can be opened by pulling out the spindle, the pawls b sliding without depression along longitudinal grooves e thus brought into line until, with the valve fully opened, each pawl b rests in the annular recess of the adjacent ring. The rings may then be moved to break up the key word. The valve mav be closed at any time by pushing the spindle, as each pawl will compress the spring supporting it until the annular recess c<3> is reached. To change the combination, the key word having been set, the spindle is pulled out half way. The pawls in the grooves e will lock the inner rings c<1> and on raising the check bar f, the outer rings c<2> can be turned in the opposite direction, the pawls d slipping over the teeth c<6>, until the desired new combination is set up. The check bar f is then released and the spindle pushed home. The spindle may operate the valve through linkwork or by means of a Bowden wire.
Patent GB-150646-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H21/16
Filed: 1920-03-26
Abstract: 150,646. Smith, A. C. March 26, 1920. Switches; actuating.- A switch in which the contact-member in its movement always remains parallel to the fixed contacts has a contactcarrying plate 6 with insulated contacts 14 which are interconnected by fuses, formed with lateral extensions 7 at each side which constitute the parallel-moving links of parallelogram linkages 11, 4, 7, 8 of which the member 11 is fixed, the link 4 being pivoted about the rotary operating-spindle 2 of the switch. The switch is operated by rotating the spindle 2, which carries a driving-member 12 in the form of a plate having a cut-away portion which engages a rod 3 joining the similar links 4 on each side of the contact-carrying member. Quick action may be provided and the cut-away portion of the driving-pla,te enlarged so as to give a lost-motion drive for the quick action. Additional fixed contacts may be arranged so that the switch may function as a change-over switch.
Patent GB-1219782-A (GB)
Title: Improvements in or relating to polymers
Inventor: SAVILLE ROWLAND WHINCUP
IPC: C08F36/16
Filed: 1968-02-23
Abstract: 1,219,782. Stabilizing neoprene. E.I. DU PONT DE NEMOURS & CO. 24 Feb., 1969 [23 Feb., 1968], No. 8943/68. Heading C3P. Boric acid is added to sulphur-modified neoprene after the polymerization reaction in which the neoprene is prepared has been terminated. The boric acid can be added as a solid or an aqueous solution to the dipersion of polymer before drying or the solid acid can be mixed with the polymer on a roll-mill. The amount of boric acid added is preferably 0À3 to 1% by weight of the neoprene.
Patent GB-140820-A (GB)
Title: Improvements in or relating to emulsifiers or the like
IPC: B01F25/74
Filed: 1920-03-26
Abstract: 140,820. Davies, J. W. April 23, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Density machines. - In a machine for emulsifying milk &c., the milk &c. is fed by a pipe 38 from a container 37 into a receptacle 16 mounted on a shaft 15. The wall 18 of the container 16 has a series of openings in which are mounted emulsifying elements, Fig. 2, comprising a casing 20 screwed into the wall 18 and provided with a head 21, perforations 22, and a. deflector 23. Screwed into the casing 20 is a plug 24 with an axial perforation 25 having a flared inner end 26 and also an annular clearance 28. A bearing member 27 is inserted between the plug 24 and the head 21 of the casing. and by adjusting the plug 24 is caused to bear against the head 21, leaving a small passage communicating with the perforations 22 by the clearance 28, and the end 26 of the perforations 25 so that the fat globules of milk passing therethrough will be disrapted. The emulsified milk &c. passes into a pan 30 with an outlet 32. A cover member 34 with an inclined bottom and carrying the container 37 fits into the pan 30.
Patent GB-558432-A (GB)
Title: Improvements in or relating to electrical resistances
IPC: H01C17/20
Filed: 1942-07-01
Abstract: 558,432. Resistance coatings. CLARK, A. G. July 1, 1942, No. 9048. [Class 37] A high resistance of the kind formed by depositing a film of carbon, metal, &c. on an insulating body has an insulating coating applied in direct contact with the conducting film, the coating being composed of polystyrol whereby the adherence of the film to the coating is less than the adherence of the film to the insulating body, so that the coating can be strained or distorted without setting up excessive strains in the film, which affect the stability of the resistance. In an example a body of porcelain has a conducting film of carbon formed by cracking a hydrocarbon on the porcelain. This is coated with a lacquer formed of polystyrol dissolved in xylene, and is dried to cause the xylene to evaporate, leaving the polystyrol unchanged chemically. A sleeve of polyvinyl chloride may then be shrunk on to the resistance, being first swelled in xylene and then pushed on to the resistance. Excess free xylene from the sleeve softens the surface of the polystyrol coating, which adheres firmly to both the sleeve and the resistance film. Specification 416,835 is referred to.
Patent GB-240624-A (GB)
Title: A process for the manufacture of cellulose acetate
IPC: C08B3/06
Filed: 1924-04-09
Abstract: Acetone-soluble cellulose acetates are produced by adding to the acetylating mixture comprising a condensing-agent, a salt or salts of vanadium, nickel, cobalt or chromium; the addition has the function of a catalyst, the metal being the active element, and therefore it may be introduced in the metallic form, passing gradually into solution as the reaction proceeds.  In examples, chromium acetate is added from the commencement, and the temperature is first kept below 15 DEG  C. until solution occurs and is subsequently maintained at 30 DEG  C. until an acetone-soluble acetate is produced; alternatively, nickel acetate is present during the first stage, and an addition of vanadium sulphate is made before the temperature is raised to 30 DEG C.  The material treated is preferably cotton in the form of paper and containing 6-7 per cent of moisture.  During the first stage of the reaction, the temperature may be controlled by occasional additions of sodium carbonate in order partly to neutralize the sulphuric acid employed as the condensing-agent.  The Provisional p Specification refers to the addition, as catalyst, of salts of copper.