baber/WOPTO huggingface dataset:
Patent GB-476761-A (GB)
Title: Guard for sewing machines
IPC: D05B83/00
Filed: 1936-07-14
Abstract: 476,761. Sewing machine guards. FAIRWEATHER, W. C. (Singer Manufacturing Co.) July 14, 1936, No. 19511. [Class 80 (iv)] [Also in Group VII] In a sewing-machine having a buttonclamp, stitch-forming mechanism including a reciprocatory needle, and means to move the button clamp relatively to the stitch-forming mechanism, a vertically disposed guard member is located normally adjacent the needle, and means, actuated simultaneously with the movement of the button clamp, are provided to lift the guard vertically and to tip the bottom portion thereof inwardly toward the needle. A button clamp 7 pivoted at 9 has jaws 8 to hold the buttons, and is normally held down by a spring-pressed plunger 10. Manual means are provided to lift the clamp and break the thread. This comprises a rockshaft 11 connected at one end, through an arm 14, to a treadle-actuated rod 15 and carrying at the other end an arm 12 connected by a chain 13 with clamp 7. The guard comprises a frame 17 pivotally mounted at 18 on a lever 19 pivoted at 20 and connected with the forked end 25a of an arm 25 adjustably mounted on the rod 15. The frame 17, which may carry a transparent plate, is maintained vertical 'by a spring 22 which holds a stop finger 23 against a downturned part of lever 19. On depression of the pedal, the clamp and guard are raised and, as the rising continues, a stud 24 on the guard strikes the head 4 and causes the guard to tilt inwardly. The fulcrum stud of lever 19 is secured in an existing slot 27, or in a specially provided tapped hole.
Patent GB-798902-A (GB)
Title: Improvements in or relating to measuring devices
Inventor: HALLIDAY GEORGE FREDERIC
IPC: G01T1/00
Filed: 1953-07-15
Abstract: 798,902. Electric indicating systems. BRISTOL AERO-ENGINES, Ltd., and UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 13, 1954 [July 15, 1953; May 21, 1954], Nos. 19702/53 and 15096/54. Class 40 (1). [Also in Group XL (b)] Apparatus for detecting relative movements of two members or two parts of a single member comprises a radio-active source and detector and a masking means which masks the detector from the source to an extent dependent on relative movement of the members. The drawings show an arrangement for measuring torque or torsional strain in a rotating shaft 10. The shaft is provided with a ring of apertures 12 and carries inside it an unstressed cylindrical member 19 carrying a further ring of apertures 21 concentric with and in the same plane as those in the shaft. This cylinder is supported by a flange 13 at a point along the shaft spaced from apertures 12. Thus torsional strain in the shaft varies the overlap of the two rings of holes. Inside ring of apertures 21 is copper strip 20 plated with a radioactive isotope such as thallium emitting mainly beta rays. The isotope is lightly plated with cadmium to prevent direct handling. Surrounding the shaft is an annular housing made in four sections 36, 37 joined along a diameter at flanges 39 and circumferentially at flanges 43. Windows 32 of beta-transparent materials such as mica or aluminium foil are provided and annular electrode plates 54, 55 are supported parallel to each other in insulators 56. The container is filled with an inert gas such as nitrogen, argon, helium or air at atmospheric pressure. The annular electrodes are split along a diameter to facilitate assembly. The two sections of the electrodes are paralleled as shown in Fig. 3 and connected to an H.T. source 60. The degree of ionization of the gas in the container and therefore the current between the electrodes varies with the strain of the shaft and the overlap of the two cylinders which reduces the quantity of radioactivity reaching the detector. The ionization current is made alternating by a vibrating reed electrometer amplified by an A.C. amplifier 67 and indicated at 66. Electrometer 70 and amplifier 67 may be mounted in a casing 71 mounted on a fixed bracket with the detector.
Patent GB-1514832-A (GB)
Title: Portable battery operated device including a switch
IPC: H04B1/08
Filed: 1975-05-09
Abstract: 1514832 Deaf aids; receiver on-off switching T G PALMAER 9 May 1975 19714/75 Headings H3Q and H4J A portable battery operated device, e.g. a signal receiver for attracting the attention of personnel, a hearing aid, a speech amplifier or a radio receiver, includes an arm 2 pivotally journalled intermediate its ends so that when one end 6 is used to mount the device in position, e.g. in a jacket pocket 11, the other end 7 of the arm 2 moves to actuate a switch 10 connected in circuit with the batteries. When the device is removed from the pocket 11, the switch 10 is biased to an open position and the arm end 6 is urged by a spring 4 to a rest postion against the casing 5 of the device. The switch 10 is embedded in yielding material 12 to allow larger movements of the arm 2 when clipped over thick material 11.
Patent GB-246736-A (GB)
Title: Improvements in devices for use in connection with the automatic extinguishing of fires
IPC: A62C35/60
Filed: 1925-08-05
Abstract: 246,736. Nemec, J. Aug. 5, 1925. Inflammable fluids, cutting off in case of fire; sprinklers, automatic.-A device for cutting off a fuel-feed, particularly in vehicles or aircraft, is operated by the expansion of a metal tube 1 which is fixed at its upper end to a rod 2 having a lower coefficient of expansion. When the tube @ expands, a stirrup 2<a> on the rod 2 lifts a bar 4 to disengage a knob 4<b> thereon from a shoulder 6<b> on a plunger 6. When this occurs the plunger 6 is moved by a spring 8 so that its coned extension 9 engages a valve seat 14 to close the fuel passage. At the same time a needle 10 on the plunger 6 enters a recess 12 in the control cock 11. When the tube 1 has cooled rotation of the cock 11 forces the extension 9 back from the seating 14 so that the knob 4<b> again engages the shoulder 6<b>. In a modification, for bringing a fire-extinguishing apparatus into operation, the valve arrangement is omitted and a rope is attached to the rear of the plunger 6, this rope passing to the apparatus to be operated.
Patent GB-1474195-A (GB)
Title: Polysiloxane
IPC: G03G5/07
Filed: 1974-05-06
Abstract: 1474195 Photoconductive polysiloxanes XEROX CORP 6 May 1974 [7 May 1973] 19757/74 Headings C3T and C3S [Also in Division G2] A photoconductive polysiloxane is represented by the formula wherein each -[-A-O-]- 3  segment is independently selected from divalent radicals of the formula -[-R 1 R 2 SiO] 3 - wherein R 1  is an alkyl group of up to 8 carbon atoms, an alkoxy group of up to 8 carbon atoms or an alkyl carbonyloxy group in which the alkyl moiety has up to 8 carbon atoms, and R 2  is an aromatic polycyclic group having at least 3 fused aromatic ring nuclei or a heteroaromatic group; each -[-B-O-]- 3  or  4  segment is independently selected from divalent radicals of the formula -[R 4 R 5 SiO]- 3  or  4  wherein R 4  and R 5  are alkyl groups of up to 8 carbon atoms, R 3  is a hydroxyl or other polymer end group, R 6  is a polymer end group and m, n, p and q are positive integers. They may be prepared by contacting (a) a cyclic trimer of the formula (R 1 R 2 SiO] 3  or (b) a mixture of the said cyclic trimer and a cyclic tetramer of the formula (R 4 R 5 SiO) 4  with an initiating amount of a tetraalkylammonium silanolate or the corresponding alkali metal salt thereof at 20-160 C. optionally in the presence of an organic solvent. The cyclic trimer may be prepared by first reacting a compound of the formula R 2 Br with phenyllithium and reacting the resulting R 2 Li compound with R 1 SiCl 3 . The resulting compound R 1 R 2 SiCl 2  is preferably converted to the corresponding dihydride with LiAlH 4  and then hydrolysed. The cyclic tetramers are similarly prepared. Suitably R 2  radicals are those derived from anthracene, perylene, tetraphene, pyrene, phenanthrene, carbazole, benzcarbazole, indole, dibenzofurane or dibenzothiophene or their alkyl, halo and cyano substituted derivatives. Suitable R 3  groups include hydroxyl, acyloxy or the residue of an initiating chain, e.g. tetramethylammonium silanolate; and suitable R 6  groups are hydrogen or acyl. The polysiloxane preferably has a number average molecular weight of at least 1000 and p and/or q are preferably such that the ratio of the number of (-A-O-) units to the number of [-B-O-] units is from 3 : 1 to 1 : 8. In the examples homopolymers are prepared from the cyclic trimers wherein R 1  is methyl and R 2  is either (1) 1-pyrenyl or (2) N-ethyl-3-carbazolyl; and copolymers are prepared from the cyclic tetramer [(CH 3 ) 2 SiO] 4  and either (i) the cyclic trimer (1) or (2) as above, or (ii) a mixture of the cyclic trimer (2) and a cyclic trimer wherein R 1  is -OC 3 H 7  and R 2  is methylpyrenyl, or (iii) a cyclic trimer wherein R 1  is acetoxy and R 2  is N-octylcarbazolyl. In the above homo- and co-polymers R 3  is OH and R 6  is H.  Uses.-Xerographic photoreceptor components.
Patent GB-875365-A (GB)
Title: Improvements in motor vehicles adapted for use as mobile power supplying devices
IPC: F02B61/00
Filed: 1959-06-09
Abstract: 875,365. Motor vehicles carrying power plant. CLARKE, R. A. W. June 3, 1960 [June 9, 1959], No. 19786/59. Classes 79(2), 79(3) and 79(5). A steerable, wheeled motor vehicle used as a mobile power-supplying device has on its chassis 1 an engine 14 to one end 24 of whose crank-shaft is directly and releasably coupled a power-supplying device 26 and to the other end transmission means 18, 21- 22, including torque reducing means 20, to drive road wheels. The engine 14 is a fourstroke diesel and has a power output greater than that required solely for traction. Its radiator 16 is rearward and it has a fan 17. It drives the road wheels 4 through a clutch and gear-box 18 and a compressor 26, which may be rotary orreciprocatory (not shown), through a clutch 25. The compressor has an air-filter 28, an oil-cooler 29, also a governor 30, which is operative only when the clutch 25 is engaged. The road-wheel-clutch is pedaloperated through a rod 39 and arm 40 and the gear-lever 19 engages in a gate 47. A lever 32 pivoted to a quadrant 33, operates the compressor clutch 25 through a rod 34 and arm 35. The clutch 25. is-engaged when the lever 32 is moved back to a notch 42 (Fig. 3). With this movement an eye 43 on the bottom of the lever slides along the rod 39 to contact a stop 44 on the rod which prevents movement of the clutch pedal 13. A linkage 34-51-52-53-55 (Fig. 3) simultaneously moves a plate 46 behind the gate 47 so that the gear lever 19 is confined in a slet 46 in the neutral position. If the gear lever is not in neutral the plate 46 cannot move in behind the gate and in consequence the lever 32 cannot be operated. In an alternative embodiment (Fig. 4 not shown) the clutch 25 is operated by a lever mounted on a sleeve surrounding the upper end of the vehicle's steering column and is provided with similar interlocks with the vehicle clutch rod and with a gear lever.
Patent GB-695842-A (GB)
Title: Improvements in or relating to coupling devices
IPC: B24B45/00
Filed: 1951-08-22
Abstract: 695,842. Couplings. TINTGVATNE, A. Aug. 22, 1951 [Aug. 25, 1950], No. 19799/51. Class 80 (ii). An abrasive wheel 8 or other member is secured to the end of a spindle 1 by means of a screw 4 engaging a threaded bore in the spindle so as to clamp the wheel against a sleeve 7 threaded over the spindle and having an end shoulder 12 cooperating with a corresponding end shoulder on a collar 3 formed on the spindle, the threads in the sleeve 7 being of greater pitch than those of the screw 4 so that the wheel tends to be tightened in either direction of rotation. Due to the shoulders 12, there is no tendency for the sleeve 7 to jam on its threads. The sleeve 7 may be locked to the spindle, so as to effect self-tightening in one direction only, by axial movement of a ring 10, Fig. 3, carrying a key 11, or of a sleeve 14', Fig. 7, having an inwardly-projecting pin cooperating with grooves in the sleeve 7 and collar 3.
Patent GB-918042-A (GB)
Title: Improvements in and relating to injection moulds for brushes and like articles of thermoplastic material
IPC: A46B3/00
Filed: 1961-02-17
Abstract: 918,042. Injection moulding brushes. GROTH, C. Feb. 17, 1961 [Feb. 19, 1960], No. 19848/62. Divided out of 918,041. Class 87(2). A pin (shown in sections in Fig. 2) for insertion in a bore in an injection mould for brushes or like articles, to form bristle-moulding cavities, comprises a substantially cylindrical body having on its outer surface a plurality of spaced longitudinal grooves 9<SP>11,</SP> the bases of these grooves being formed with a plurality of smaller longitudinal grooves.
Patent GB-870214-A (GB)
Title: Improvements in magnetic material and method of fabrication
IPC: H01F1/14
Filed: 1957-09-17
Abstract: Molten metal comprising at least 92% of iron is poured into an ingot mould having a temperature gradient such that on solidification a polycrystalline casting having a <PICT:0870214/III/1> plurality of vertically elongated grains is produced.  The molten metal may contain aluminium, molybdenum, or silicon.  As shown an alloy is cast in a mould 30 constructed of fused Al2O3 and closed at the bottom by a hollow water cooled copper slab 31. In operation, the side walls of the mould are heated by an electrical resistance heater to about 1400 DEG C. and the cooled bottom slab is maintained at about 20 DEG C. Molten metal at about 1700 DEG C. is poured into the mould and an ingot is formed having a plurality of columnar grains 34 which grow vertically from the cooled bottom of the mould.  To prevent the upper portion of the molten metal in the mould from cooling too rapidly an exothermic mixture of iron oxide and aluminium is added to react with the molten metal and produce a temperature of about 4000 DEG C. U.S.A. Specification 2,112,084 is referred to.
Patent GB-373001-A (GB)
Title: Improvements in or relating to power-driven screw presses for use in making tiles and the like
IPC: B30B1/22
Filed: 1931-07-11
Abstract: 373,001. Screw presses. JESSHOPE, A. P. and BADDELEY, A., Orford Street, Longport, Stoke-on-Trent. July 11, 1931, No. 19959. [Class 87 (ii).] In a power-driven screw press for use in making tiles &c. of the kind in which the power is applied by means of a friction wheel or like device arranged in operative association with the rising and falling flywheel a of the press, the flywheel is furnished with an axially upstanding guide rod d which operates slidably in overhead bearings f in a crosshead g or the like supported by the frame of the press in order to overcome the tendency to displacement of the screw from its true axial alignment by the lateral pressure of the friction wheel or wheels.
Patent GB-598579-A (GB)
Title: An improved process for the manufacture of nitro-phosphate fertilisers
IPC: C05B11/06
Filed: 1945-08-07
Abstract: Nitro-phosphate fertilizers are made by subjecting calcium phosphates to the action of nitric acid and nitrogen oxides, simultaneously or successively in either order, while regulating the respective quantities of the reactants so that the quantity of water introduced leads to the formation of nitrophosphates containing fewer than 4 molecules of water per molecule of calcium nitrate.  While nitric acids of various concentrations and nitrogen oxides of any desired origin may be used, it is preferable to employ the products of the oxidation of ammonia without introducing water from any external source.  One method of carrying out the process consists in causing a portion only of the nitrogen oxides formed in the oxidation of ammonia to be absorbed by the water of condensation (resulting from the oxidation) and causing the resulting nitric acid and the remaining unabsorbed nitrogen oxides to act on the phosphate.ALSO:Nitro-phosphate fertilizers are made by subjecting calcium phosphates to the action of nitric acids and nitrogen oxides, simultaneously or successively in either order, while regulating the respective quantities of the reactants so that the quantity of water introduced leads to the formation of nitrophosphates containing fewer than 4 molecules of water per molecule of calcium nitrate.  While nitric acids of various concentrations and nitrogen oxides of any desired origin may be used, it is preferable to employ the products of the oxidation of ammonia without introducing water from any external source.  One method of carrying out the process consists in causing a portion only of the nitrogen oxides formed in the oxidation of ammonia to be absorbed by the water of condensation (resulting from the oxidation) and causing the resulting nitric acid and the remaining unabsorbed nitrogen oxides to act on the phosphate.
Patent GB-381948-A (GB)
Title: Improvements in or relating to delivery mechanism for use in printing machines
IPC: B65H29/16
Filed: 1931-07-14
Abstract: 381,948. Sheet-delivery apparatus. QUICK, C. G., MARSHALL, C. W., BALL, D. A., and WHITEHEAD, W. A., 109, Borough Road, London. July 14, 1931, No. 20239. Addition to 354,875. [Class 100 (i).] In the delivery apparatus for rotary printing- machines described in the parent Specification, the chain conveyer 1 is mounted so as to have a bodily translational movement towards and away from the delivery flys 2. The chains 1 pass over sprocket-wheels 3, 4, the former of which are carried on a shaft 5 and the latter on stub-shafts 6 adjustably carried by a transverse member 9<1>. Frame members 7, 8 support the parts 5, 9<1> and are pivoted by means of the shaft 5 on frame members 10, 11 pivoted on steel shafts 12, 14 fixed to the main frame 13 of the machine. A shaft 19 mounted in the members 7, 8 and rotatable by worm-gearing 17, 18<1> operated by a hand-wheel 18 carries cranks 20 having pins 21 engaging slots 22 in the members 10, 11 so that the frames 7, 8 are adjusted relatively to the frames 10, 11 by rotating the wheel 18. A similar worm-gearing and crank-mechanism 24, 30 adjusted by a hand-wheel 23 is provided on the frames 10, 11 for adjustment relatively to the main framing 13. By turning both wheels 18, 23 simultaneously, the chain-conveyer 1 is moved bodily towards or away from the flys 2, adjustments of inclination being obtained by separate manipulation of either wheel. A chain drive between the shafts 5, 14 serves to actuate the conveyer 1, the drive being varied by changing the sprocket wheels 15, 16 carrying the chain. From the conveyer 1 the products pass to endless belts 32 passing at one end over pulleys 33 on the shaft 5 and at the other end over pulleys 34 adjustably-mounted in frames 36 pivoted on the worm-gearing shaft 27 and supported by legs 37 rounded at the base to enable them to roll as the frames 10, 11 are adjusted.
Patent GB-499330-A (GB)
Title: Improvements in or relating to electrical musical instruments
IPC: G10H1/32
Filed: 1937-07-22
Abstract: 499,330. Electric switches. COMPTON ORGAN CO., Ltd., J., and BOURN, L. E. A. July 22, 1937, Nos. 20328, 20329, and 20331. [Class 38 (v)] [Also in Group XXXVIII] In an electrical musical instrument wherein the partials of the notes are separately produced, vertical rows of contacts may be operated by the electromagnetic means shown in the Figure. The contacts consist of horizontal silver wires 1 whose free ends pass through apertures in insulating vertical slides 4 and project under bus - bars 2. Depression of a key energizes a magnet 5, the L-shaped armature 8 of which, loosely pivoted at its angle on a rib 13 and controlled by an adjustable screw-head 11, lifts the slide 4 against the action of a spring 10 and allows the wires to make contact with the bus-bars by their own resiliency. The wires 1 are connected to resistances 14 inserted in holes in the board 15. Specifications 403,444, 433,050, [both in Group XXXVIII], and 501,339 are referred to.
Patent GB-426855-A (GB)
Title: Modulation system for high frequency wireless transmission
IPC: H03C1/24
Filed: 1934-07-11
Abstract: 426,855. Valve modulating circuits. HAZELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.- (Assignees of Wheeler, H. A.; 18, Melbourne Road, Great Neck, New York, U.S.A.) July 11, 1934, No. 20377. Convention date, July 12, 1933. [Class 40 (v)] A thermionic modulation system comprises a valve having two grids separated by a positively biassed screen electrode, modulating potentials being applied to one grid and radiofrequency oscillations to the other, the output circuit being between anode and cathode. The Figure shows a hexode valve in which a virtual cathode is formed between the positively biassed inner screen 3 and the negatively biassed outer control grid 4 to which modulating potentials from the microphone 19 are applied. In this case radio frequency oscillations are applied to the inner control grid 2 by back coupling the screen grid 3 to the inner grid circuit at 16, 15, 18. Improved working is obtained by the use of a positively biassed second screen electrode 5. The modulating and radio frequency potentials may be transposed, the radio frequency being applied to the outer grid and the speech frequencies to the inner. The valve may be used as a plain modulator by dispensing with the back coupling and applying radio-frequency oscillations to the control grid, Fig. 3, (not shown). The modulating control grid is given a linear relation between grid voltage and mutual conductance to give distortionless modulation ; similarly the relation between grid voltage of the radio-frequency grid and space current is made linear to give distortionless amplification.
Patent GB-738066-A (GB)
Title: Improved heating apparatus for use with liquid hydrocarbon fuel
IPC: F23D11/44
Filed: 1953-07-23
Abstract: 738,066. Liquid fuel burners. MARTIRI, R. July 23, 1953 [July 31, 1952; July 31, 1952], No. 20456/53. Class 75 (1). A liquid fuel burner in which a tubular vaporizing chamber 1 filled with a filamentary material such as coiled wire gauze feeds an adjacently lying tubular vapour chamber 4 from which the vapour passes through injectors 14 to mixing tubes 12 feeding the main burners 7, 8 and an auxiliary burner 9 which heats the vaporizing and vapour tubes is characterized in that the feeding communication 6 at the end of the vaporizing tube 1 feeds the vapour tube 4 at an intermediate point so that a section a which supplies the auxiliary burning is unaffected by variation in the demand of the main burners 7, 8 which are supplied from another section b extending in the opposite direction; like injectors are used throughout. Each injector 14 forms part of a needle valve attached at right angles to the chamber 4 in a plane above the vaporizer 1. The section a or a<SP>1</SP> of the chamber 4 feeding the auxiliary burner 9 may, as shown in Fig. 1, be an extension of the chamber 4, or, as shown in Fig. 3, an extension of the vaporizer 1 extending past the communicating passage 9 ; the section b of the chamber 4 being in the latter case a tube parallel to the vaporizer 111. The mixing tube 12 of the auxiliary burner 9 may be attached at right angles to the burner 9, as shown in Figs. 1 and 3, or may be a curved extension of the end of the tube 9, Figs. 4 and 5 (not shown). A tray 20 is located beneath the tubular members 1, 4 and 9 for initially preheating the apparatus.