baber/WOPTO huggingface dataset:
Patent GB-1497508-A (GB)
Title: Burner control apparatus comprising a flame relay controlled by a flame senser
IPC: F23N5/20
Filed: 1976-02-26
Abstract: 1497508 Burner control apparatus LGZ LANDIS & GYB ZUG AG 26 Feb 1976 [4 March 1975] 07656/76 Heading F4T [Also in Division H1] Burner control apparatus comprises a relay 1 controlled by a flame sensor 23 and having a first set of contacts 5 connected to control ignition and fuel supply and comprising a contact 7 coupled to an armature 2 of the relay and a rest contact 8 which is coupled to a second set of contacts 6 which causes interruption of the fuel supply when operated by movement of the rest contact 8. The contacts 7-10 are leaf springs, of which the contact 7 has a stronger restoring force than the others. In the embodiment of Fig. 1, when a flame is sensed the relay is energized, the contact 7 is moved to the right and the contacts 5 are closed; on flame failure the relay is de-energized and the contact 7 moves to the left, and if the contacts 5 fail to open, the contact 8, and with it the contact 10, are pulled to the left, closing the contacts 6. These may be connected as at 6a, Fig. 5, so that the whole system is short-circuited and fuse 32 is blown, or as at 6b or 6c so that switching means 25 or fuel control relay 27 is short-circuited. In the embodiment of Fig. 2 (not shown), failure of contacts 5 to open causes normallyclosed contacts (13) to be opened, thus breaking the supply either to the whole system (as at 13a) or to the relay 27 (as at 13b). Alternatively the system may be such that the relay is deenergized and contacts (17) are closed when a flame is sensed, the contacts (17) being opened when flame failure causes the relay to be energized; should they fail to open the resulting bending of rest contact (19) will cause contacts 6 to close, Fig. 3 (not shown), or contacts (13) to open, Fig. 4 (not shown), thus interrupting the fuel supply.
Patent GB-1414393-A (GB)
Title: Process for making chloroprene-sulphur copolymers
IPC: C08F2/44
Filed: 1973-02-16
Abstract: 1414393 Chloroprene polymers E I DU PONT DE NEMOURS & CO 16 Feb 1973 [18 Feb 1972] 7796/73 Heading C3P Chloroprene-sulphur copolymers are produced by otherwise conventional aqueous emulsion techniques except that there is introduced into the polymerization system at a time no later than when the polymer is in the latex state at least 0À5 wt. per cent (based on monomer) of a sulphenamide of formula wherein R and R<SP>1</SP> are alkyl, cycloalkyl or aralkyl radicals (any of which may be substituted by groups which do not detrimentally affect polymerization), or one of them is hydrogen, or together with the nitrogen atom to which they are attached they form a saturated ring. The compound may be added before, during or after polymerization provided the polymer is still in the latex state. In examples it is added either with a short-stop recipe, or immediately after short-stopping, or to the monomer recipe. Suitable compounds include 2-(morpholinothio)- benzothiazole, 2 - (cyclohexylaminothio)benzothiazole, 2 - (t - butylaminothio)benzothiazole and 2 - (2,6 - dimethylmorpholinothio)benzothiazole.
Patent GB-1004441-A (GB)
Title: A process for the preparation of polybutadiene latices
IPC: C08J3/07
Filed: 1964-02-25
Abstract: Latices of butadiene homo- and copolymers are prepared by polymerizing butadiene alone or with a copolymerizable monomer, in a hydrocarbon solvent in the presence of an alkali metal, an alkali metal alkyl compound or a metal organic complex compound as catalyst, mixing the hydrocarbon solution of the polymer formed with an aqueous solution of an emulsifier mixture comprising an anionic emulsifier and a non-ionic dispersing agent, emulsifying the dissolved polymer with the aqueous solution, removing the hydrocarbon solvent by distillation and recovering the polymer latex.  Generally 2 to 10% by weight of the anionic emulsifier and 4 to 20% by weight of the non-ionic dispersing agent are used, based on the weight of the butadiene polymer.  After polymerization the catalysts may be destroyed, e.g. with aliphatic, cycloaliphatic or aromatic carboxylic acids, alcohols, amines or ketones.  If the emulsion prepared contains more than 4% by weight of anionic emulsifier and more than 10% by weight of non-ionic dispersing agent, a polyhydroxy compound can be added to the emulsion before distillation, in quantities of 0.1% to 5.0% by weight based on the polymer used.  Polyhydroxy compounds mentioned are alginates, methyl cellulose or reaction products of sugars with ethylene oxide. In the Examples: (1) polybutadiene is emulsified with potassium oleate and the reaction product of nonyl phenol with 7 mols. of ethylene oxide; (2) polybutadiene is emulsified, in the presence of methyl cellulose, with the sulphated reaction product of nonyl phenol with 30 mols. of ethylene oxide and with the non-sulphated reaction product; (3) a butadiene-isoprene copolymer is emulsified with lauryl sulphate and the reaction product of nonyl phenol with 15 mols. of ethylene oxide; (4) a butadiene-styrene copolymer is emulsified with the potassium salt of coconut oil fatty acids and hydroxyethylated oleyl alcohol and (5) a block copolymer of butadiene and styrene is emulsified with the potassium salt of abietic acid and hydroxyethylated abietic acid in the presence of sodium alginate.
Patent GB-609437-A (GB)
Title: Improvements in or relating to chronographs
IPC: G04F7/04
Filed: 1946-03-14
Abstract: 609,437. Watches. BUCHLER, W. A. March 14, 1946, No. 7965. Convention date, March 19, 1945. [Class 139] In a chrononograph with a winding arbor arranged to start, stop and cause the flyback hands to fly back to their initial position the fly-back motion is effected by rotating the winding arbor. A winding pinion 1 is engaged by a click 2 with a pin 3 co-operating with the arm 4 of a lever 5. The other arm of the lever is in contact with a bolt 8 fixed to a brake 9. In the position shown in Fig. 1 the bolt 8 also holds a returning lever 12 in its cocked position. If the winding arbor is rotated the lever 5 is rocked displacing the bolt 8 so that the brake 9 and the returning lever 12 are both released. The returning lever 12 is then acted upon by a spring 13 and acts upon cams 18, 19 to bring the fly-back hands (not shown) to their initial position. To cock the returning lever 12 the castle ratchet 17 is rotated half a pitch thus allowing the bolt 8 to be snapped back into position by the action of a spring 20.
Patent GB-550224-A (GB)
Title: Improvements in the preservation of dried blood grouping serum
IPC: C07K16/34
Filed: 1941-06-25
Abstract: 550,224. Serum for blood grouping tests. LEDERLE LABORATORIES, Inc. June 25, 1941, No. 8001. Convention date, Aug. 1, 1940. [Class 81 (i)] A desiccated blood grouping serum is mixed with a dry water-soluble diluent such as sucrose, dextrose, or a salt such as sodium chloride. The mixture 6 is preserved in a tube containing calcium chloride or other desiccant 4, from which it is separated by a plug 2 of cotton wool or the like. The mixture is dissolved in distilled water when required for use.
Patent GB-683015-A (GB)
Title: Multiple capacitor unit
Inventor: MARKS BERT HENRY
IPC: H01G4/38
Filed: 1951-04-06
Abstract: 683,015. Electric condensers. GLOBEUNION, Inc. April 6, 1951, No. 8074/51. Class 37. A multiple electric condenser comprises at least two ceramic plates 10, each having coated silver electrodes 12 on opposite sides, and superimposed, a lead 14 with a circular portion 16 being soldered to both inner electrodes, so that they act as an electrostatic shield between the outer electrodes. Leads 20 are bent to U-shape and soldered on to the outer electrodes. The plates 10 may be circular or rectangular.
Patent GB-643019-A (GB)
Title: Aircraft heating apparatus
IPC: B64D13/08
Filed: 1944-03-17
Abstract: 643,019. Silencing gaseous currents. AXE, E. C. (Stewart- Warner Corporation) March 17, 1944, No. 8106/47. Divided out of 643,002, [Group XIII]. [Class 7(ii)] [Also in Groups XI and XIII] In an air heater (see Group XIII) in which hot gases from a combustion chamber 105 flow through a longitudinally corrugated cylinder 120 around which the air to be heated flows, the cylinder 120 contains a sound damper comprising a casing 126, which may be slotted, containing glass wool or other vibration-damping material.
Patent GB-591119-A (GB)
Title: Improvements in pyrophoric lighters
IPC: F23Q2/08
Filed: 1946-04-30
Abstract: 591,119. Pyrophoric lighters. ROSSETTI, I. M. April 30, 1946, No. 8112/45. [Class 75 (iii)] In a pyrophoric lighter of the kind in which a hood 9 pivoted to a bracket 12 on the fuel container, and operating the flint-wheel 8 through a one-way drive is connected by a link 14 to an operating arm 16 also pivoted to the bracket 12, the arm 16 is formed as a metal pressing having end projections or tongues, the upper projections extending through openings in the side flanges of the link 14 to form pivots 15 and the lower projections inserted through an enlarged end 12<1> of a slot 12<2> in the bracket and then slid to lodge under the bracket base in a recess 25 in the top of the fuel container to form pivots 17. The hood is returned to the closed position when the thumb-piece 17a of the operating arm is released by a blade spring 20 arranged above or below the arm or by a torsion spring coiled about the pivots 15 and having a loop engaging under the link 14. Instead of the thumb-piece 17a the top of the link 14 may be provided with an operating shroud 19. The arm 10 carrying the hood 9 may rotate the flint-wheel 8 by a pressed out tongue or by a roller pressed by a spring 26 into ratchet teeth on the flintwheel.
Patent GB-598669-A (GB)
Title: Improvements in or relating to feed magazines for rounds of ammunition
IPC: F41A9/77
Filed: 1945-04-03
Abstract: 598,669. Magazines. HYDRAN PRODUCTS, Ltd., and MOTLEY, L. April 3, 1945, No. 8187. [Class 92 (ii)] A feed magazine for rounds of ammunition comprises a rotatable escapement device which rotates step-by-step and thereby conveys the rounds successively to the firing-position, and means for conveying the rounds successively to said escapement device from a magazine proper. In the construction shown, the rounds 1 are stacked in vertical feed shoots 2, 3, 4, each fitted with a carriage device 14, as in Specification 592,714, for pressing the rounds downwardly. The rounds are thus fed to a space 6 having a floor 7 on which the rounds rest whilst they are fed by a worm 8 to a rotatable feed element mounted in a fixed drum 10. The feed element is divided into compartments by radial vanes 9 and a launching tube 5 extends from one end of the drum. with its axis at 12, Fig. 2. When a firing button is depressed, an electric motor 13 is energized and serves to tension a spring coiled around a shaft 31 which has a chain-and-sprocket connection 34, 36 with the shaft 37 of worm 8, and which is geared to a shaft 40 having a similar connection with the shaft 44 of the feed element. The escapement mechanism comprises a shaft 47 fitted with an arm 49 which passes through a hole 50 in the launching tube, the arm and shaft being biassed into that position by a spring 51. When a round is fired it rocks the arm as it passes down the tube and thereby causes an arm 52 on the shaft to disengage one of four notches 54 in a wheel 53 on the shaft 44. This disengagement enables the feed element 9 and worm 8 to advance under the action of the spring on shaft 31 to feed another round into position, the arm 52 then engaging with the next notch 54. The firing mechanism is substantially the same as that described in Specification 588,920, but is modified in that contacts 55, controlled by arm 52, are provided so as to close the circuit only when the arm is in engagement with a notch 54. In use, the shoots 2, 3, 4, Fig. 2, empty in that order, this result being effected by pivoted devices 21 arranged as shown between the shoots and having surfaces 24 which are urged to a position in which they retain the rounds in one shoot until the adjacent shoot is empty. The devices 21 may be associated with switches in circuit with the carriages and serving to de-energize one motor and to energize another when a compartment has been emptied. Specifications 572,504, 572,510 and 589,177 also are referred to.
Patent GB-1111991-A (GB)
Title: Method of passivation of pn junction devices
Inventor: COUPLAND MICHAEL JOHN
IPC: H01L21/00
Filed: 1965-02-25
Abstract: 1,111,991. Semi-conductor devices. NATIONAL RESEARCH DEVELOPMENT CORPORATION. 24 Feb., 1966 [25 Feb., 1965], No. 8236/65. Heading H1K, A PN junction in an A m B v  compound semiconductor body is protected by an epitaxial layer of semi-insulating material produced by diffusion into the body or vapour deposition on it. In a typical case the material is deposited on a transistor zone structure formed by oxide masking technique after removal of the oxide, contacts being made to the zones by alloying through the material. Alternatively a layer of intrinsic gallium arsenide is epitaxially deposited on a doped body of the same material and a buried PN junction formed by alloying through the intrinsic layer. The use of gallium phosphide to protect PN junctions in gallium phosphide is also suggested.
Patent GB-1262855-A (GB)
Title: Improvements in or relating to rotary solenoids
Inventor: HOSKINS DAVID WILLIAM
IPC: H01F7/14
Filed: 1968-02-21
Abstract: 1,262,855. Rotary actuators. SMITHS INDUSTRIES Ltd. 21 May, 1969 [21 Feb., 19681, No. 8443/68. Heading H1P. The rotor and stator of a rotary actuator have co-operating polepieces shaped to arcs of spirals.  As shown, Fig. 1, the stator comprises a soft iron core 1 having a stem 2 and a base 3 on to which is fitted a soft iron shell 8 having an inwardly extending flange 9 forming the polepiece. A coil 10 wound on a former 11 surrounds the core stem 2. A soft iron rotor 12 is pivoted on a steel shaft 4 supported in jewel ring bearings 5, 6, and is biased by means of a hair spring 22. The rest position and energized position are determined by stop plates 26 which engage a stop pin 23. As shown, Fig. 2, the rotor and stator pole faces each comprise two 180 degree arcs of Archimedian spirals, the co-operating arcs of the polepieces lying on segments of the same spiral. The rotor is biased anticlockwise to the rest position illustrated in Fig. 2, and when the coil is energized the rotor is moved clockwise to reduce the thickness and hence the reluctance of the air gaps 14. The rotor turns through an angle of about 90 degrees before it is stopped by the engagement of the stop plates 26 with the pin 23. The device has a logarithmic torque characteristic but greater starting torque may be obtained by rotating the rest position of the rotor clockwise, with consequent reduction of maximum rotation angle. The output shaft may protrude from the end of the housing remote from the rotor, to provide an anticlockwise rotation when the coil is energized.
Patent GB-707242-A (GB)
Title: Improvements in or relating to wrapping machines
Inventor: FORSTER LESLIE GORDON
IPC: B65B59/00
Filed: 1951-04-12
Abstract: 707,242. Wrapping-machines. FORSTERS MACHINE CO., Ltd. April 10, 1952 [April 12, 1951], No. 8560/51. Addition to 680,115. Class 94 (1) The machine described in the parent Specification is improved by the provision of interchangeable top-folding plates of different dimensions and/or having depending flanges of different dimensions, which are adapted and arranged to be mounted in a readily-detachable .manner in a member to which a predetermined reciprocating movement is imparted to effect the folding of the portion of the wrapper extending from the top of the package and the subsequent downward movement of the package. As shown, each folding plate 20, having a depending flange 23 secured thereto by screws, is carried by an arm 19 secured by a nut 18 to a stem 8 adapted to be received in a tubular arm 4 and having pins 11, engageable in bayonet slots 12 in the arm against the action of a spring 13 acting between pads 15 and 16. The arm 4 is adjustably secured to a reciprocable member 1 carried by a blade 2 mounted for vertical movement in ballbearings 3 as described in Specification 681,412, [Group XXXIV]. Specification 683,512 also is referred to.
Patent GB-374958-A (GB)
Title: Improvements in or relating to work-supporting racks
IPC: A47B57/06
Filed: 1931-03-20
Abstract: 374,958. Racks. BRITISH UNITED SHOE MACHINERY CO., Ltd. and ATKINS, R. H. A., Union Works, Belgrave Road, Leicester. March 20, 1931, No. 8575. [Class 52 (v).] A metal rack for use in the manufacture of footwear consists of end members 5 connected by front and rear longitudinal members 7 which carry shoe supporting struts 15 retained in position by quickly detachable members. In the construction shown the struts 15, of tinned sheet metal, are bent to form a round upper surface with inturned flanges 17 which engage in notches 19 in the members 7. The struts are retained in position by readily removable U-shaped strips 23 secured by screws 24 to the members 7. The struts are covered with rubber &c. tubes 21.
Patent GB-197144-A (GB)
Title: Improvements in electric protective devices
IPC: H02K11/00
Filed: 1922-03-24
Abstract: 197,144. Rixen, C. J. March 24, 1922. Thermal switches; protective arrangements.- To protect electric motors and other electrical apparatus against overheating, a thermal switch, Fig. 1, in which the melting of a fusible nut g allows a spring h to move a contact-piece f<1>, is arranged to connect one or more of the supply fuses d, Fig. 2, in a short circuit to earth, the fuse thereupon blowing and cutting off current from the protected apparatus. The short circuiting connection may be across the main, or between the neutral point of a polyphase system and tappings in the stator windings. The thermal switch may be put through an opening in the casing of a machine y, as shown in Fig. 10, or otherwise mounted close to the commutator, armature or other parts liable to become overheated. The invention may be applied to electric irons.
Patent GB-573717-A (GB)
Title: Improvements in frequency changers
IPC: H01F38/04
Filed: 1944-05-06
Abstract: 573,717. Frequency changing. AUTOMATIC ELECTRIC LABORATORIES, Inc. May 6, 1944, No. 8616. Convention date, May 6, 1943. [Class 38 (ii)] In a frequency reducing system comprising a core with a common limb and two other saturable magnetic limbs, a load which is associated with a condenser connected to a winding on one of the saturable limbs is supplied with current of a frequency which is a subharmonic of the frequency of the input to a winding on the common limb, connection of which input produces a starting transient. Winding 11 on the common limb 15 is energized from a source 10, and while contacts 20 of a relay 19 remain closed and short-circuit a coil 13 on a limb 17, most of the flux is diverted through limb 16. Current of the input frequency then flows through coil 12, capacitor 14 and the coil of relay 19 which opens the contacts 20. The resultant diversion of flux and general disturbance of conditions results in the setting up of oscillations in the capacitor circuit of a frequency depending largely on the natural frequency of that circuit. The frequency most easily produced is equal to one-third of the source frequency. The low impedance of capacitor 14 at the input frequency causes most of the section 15 flux to pass through section 17 and therefore the voltage in coil 18 supplying the load LD is chiefly of subharmonic frequency. Coil 18 may be omitted and the load supplied directly from the capacitor circuit. With a large value of capacitor 14 the subharmonic flux density is high and the non-linear magnetization characteristic of the core results in stability of operation. Relay 19 restarts the oscillations automatically whenever they are stopped by overload. In operation, the voltage across capacitor 14 is induced by the flux in section 16 which is substantially the difference between the fluxes in sections 15 and 17, and in a modification of the invention the same result is obtained directly by connecting the capacitor 14 in series with oppositely connected windings on limbs 15, 17. Windings 11, 13 may also be used as autotransformers'to raise the capacitor volts and to reduce the current through the relay contacts respectively, Fig. 2 (not shown). In a further modification, the two ways of connecting the capacitor circuit are combined, whereby all the winding space may be utilized advantageously, thevoltage in each winding may be lower and winding 13 may have fewer turns. If the frequency-changer is used to supply ringing power for telephone system, added harmonics to provide ring-back tone may be produced by a saturable inductance in the capacitor circuit. a capacitor may be inserted in the load circuit to prevent overloads stopping the oscillations.
Patent GB-651716-A (GB)
Title: Improvements in or relating to moisture proofing compositions and articles to which said composition has been applied
IPC: D06M13/02
Filed: 1947-03-31
Abstract: A composition for coating and impregnating artificial flowers and fruit and similar articles comprises a wax and 10-37 per cent by weight of a terphenyl, a mixture of isomeric terphenyls, a hydrogenated terphenyl or an N-xenyl stearamide.  Natural or synthetic waxes or wax substitutes may be used; paraffin wax, ceresin, hemp wax, bayberry wax, beeswax, carnauba wax, candelilla wax, chinese wax, japan wax montan wax, ozokerite and spermaceti are specified.  By " wax substitutes " is meant a fatty alcohol such as cetyl alcohol, an ester of a fatty alcohol with a fatty acid such as cetyl palmitate, an ester of a glycol or polyglycol with a fatty acid such as diethylene glycol distearate, a partial glycerol ester with a fatty acid such as monostearin or hydrogenated castor oil (opal wax). Ortho-, meta- and paraterphenyls, hydrogenated meta- and paraterphenyls, and N-ortho- and para-xenylstearamides may be used as the additive. Examples of wax compositions for coating paper are given; they are preferably applied in the form of a hot melt, but may be used in the form of a solution or an emulsion.
Patent GB-1143306-A (GB)
Title: Bearing cages
IPC: F16C33/46
Filed: 1967-02-23
Abstract: 1,143,306. Bearings. GENERAL MOTORS CORP. 23 Feb., 1967 [7 March, 1966], No. 8623/67. Heading F2A. A bearing cage comprises end rings 28 joined by cross-bars 34, the sides of the bars having radially inner and outer portions 40, 42 tangential to adjacent rolling elements and intermediate portions 44 spaced from adjacent rolling elements, the bar ends having shanks 46 extending into holes 30 in rings 28 with a flat surface 48 on each shank engaging a flat surface 32 in each hole. In Fig. 4 each shank and hole is part-circular with two parallel flat surfaces, those of the shanks being continuous with portions 44. The shanks are of lesser radial height than portions 44 and are positioned adjacent their radially inner part (as shown) or radially outer part (Fig. 8, not shown). After insertion of the shanks their ends are widened to fill the outwardly tapered part of the holes.
Patent GB-1381396-A (GB)
Title: Nut assembly
IPC: F16B33/00
Filed: 1972-02-24
Abstract: 1381396 Anchoring nuts VSI CORP 24 Feb 1972 [15 March 1971] 8632/72 Heading F2H A nut assembly 11 comprises a nut 13, a deformable sleeve 15 attached at one end to the nut, and a mandrel 17, the sleeve having at least three radially projecting lobes 61 at its other end so that when an axial pull is applied to the mandrel the sleeve is set in a bore 53 by radial expansion of the lobes and rotation of the device in the bore is precluded. As in Fig. 4, which shows a blind installation, a portion 30 of the sleeve may be deformable axially so as to clamp the device to a workpiece 49, the mandrel after deforming the portion 30 shearing at the groove 43 and then expanding the lobes to provide an anchored nut. In an alternative embodiment (Fig. 6) the sleeve 71 has lobes 77 but is not axially deformable. Instead it is attached to a flanged nut 87 by a wire retaining ring 99 engaging between tabs 85, fixed to the sleeve, and the base flange 93 of the nut. In either embodiment the lobes can be formed internally or externally of the sleeve.