baber/WOPTO huggingface dataset:
Patent GB-1438276-A (GB)
Title: Textile machines
IPC: D01H13/18
Filed: 1972-07-03
Abstract: 1438276 Feed roller stop motion JAMES MACKIE & SONS Ltd 29 June 1973 [3 July 1972] 31071/72 Heading D1D In a textile machine having pairs of feed rollers driven by a common drive each pair of feed rollers has a movable detector 21 engaging the yarn and movable to come into the range of a magnet 24 on yarn breakage, this movement serving to operate a mechanism which prevents the feed rollers concerned from feeding yarn while not affecting other feed rollers in the machine. As shown in Fig. 2 a projection 28 on sensor arm 21 disengages a hooked portion 32 of a link 31 from a rotatable wheel 33. This releases a weight 42, which turns a bracket 45 to nip the fibrous material 15 against the pressing feed roller 4 of drafting head and disengage this roller from its companion 3. As Shown in Fig. 4 the projection on the sensor arm operates a pneumatic valve to activate a cylinder 79 and hence nip the material 15 by a blade 81. In each embodiment means are provided to over-ride the sensor during machine start up and comprise a sensor engaging slidabde member 52 in Fig. 2, and a sensor engaging rotatable member 85 in Fig. 4.
Patent GB-654565-A (GB)
Title: Improvements in printing mechanisms for cash registers, calculating machines and thelike
IPC: B41J9/28
Filed: 1948-12-01
Abstract: 654,565. Typewriters &c. BROWN, J. H. H. (Kooperativa F÷rbundet, F÷rening u.p.a.). Dec. 1, 1948, No. 31115. [Class 100 (iv)] A printing hammer for cash registers, calculating - machines, &c. comprises a frame 6 which partly encloses at least one impression-pad holder 7 carrying set - screws 9 arranged wholly within the frame 6 to bear against the bottom so they may be accessible for adjustment through apertures 10 in the bottom of the frame. The heads of the screws 9 are pressed against the bottom of the frame by locking-screws 11 extending through the frame and threaded into the holders. The impression pads 8 may be secured to the holders 7 by soldering.
Patent GB-731905-A (GB)
Title: Improvements in tying-up devices
IPC: A01G17/08
Filed: 1953-11-11
Abstract: 731,905. Twisting wires together. GUIGNARD, D. Nov. 11, 1953, No. 31284/53. Class 83 (4). A hand tool for twisting wires together comprises a cheek member in which a rod having a hook at one end is longitudinally movable against a spring, means being provided to rotate the rod when it is displaced longitudinally for twisting together the ends of a fastening engaging with the hook. The tool includes a cheek plate 1, to which is secured a handle 2, and a square-sectioned rod 6, having a twisted portion 7 and formed at one end with a hook 8, longitudinally movable in lugs 4, 5 on the plate 1. In'operation, two wires to be fastened are held over the hook 8 and the plate 1 pulled back so that the rod 6 slides relatively thereto and at the same time rotates, due to the engagement of the twisted portion 7 with the lug 5, to twist the wires together. A bell-crank 13 pivoted at 12 on the cheek 1 carries an abutment 17 which serves, when the crank 13 is moved against a spring 15, to engage a stop 10 on the rod 6 to prevent the return movement of the rod 6 under the action of a spring 11 and thus allow the twisted wires to be removed from the hook 8. An end 19, to which may be secured a cutting blade, of the crank 13 and a projection 20 on the cheek 1 together constitute means to grip the ends of fastened wires for cutting. A blade 23 is secured to the cheek 1 for cutting twigs &c. In a modification, the abutment 17 is pivoted on the crank 13, being spring-urged towards a position perpendicular thereto. A rod 6 having a helical groove, in which a lug on the cheek 1 engages, may be used.
Patent GB-1418452-A (GB)
Title: Preparation of 1-aza-2-hydroxybenzanthrone
IPC: C09B27/00
Filed: 1974-07-16
Abstract: 1418452 1 - Aza - 2 - hydroxybenzanthrone MONTEDISON SpA and AZIENDE COLORI NAZIONALI AFFINI ACNA SpA 16 July 1974 [18 July 1973] 31353/74 Heading C2C A process for the preparation of 1-aza-2- hydroxybenzanthrone comprises reacting an alkyl anthraquinone-1-acetate with ammonia in a solvent in the presence of a strong base and/or a reducing agent, the solvent being an aliphatic mono- or polyhydroxy alcohol with up to ten carbon atoms if the reducing agent is absent or such an alcohol or water if the reducing agent is present, and the alkyl group of the ester having from 1 to 5 carbon atoms.
Patent GB-364709-A (GB)
Title: Apparatus for separating sheets of paper or other material whilst travelling in the same direction
IPC: B65H29/64
Filed: 1930-10-20
Abstract: 364,709. Photographic printing. HALL, B. J., 2, Weymouth Street, and HALL, B. F., 8, Scarsdale Studios, Stratford Road, both in London. Oct. 20, 1930, No. 31382. [Class 98 (ii).] The attractive or repellant force of static electricity is employed to separate two or more sheets of paper, cloth, or other material travelling in the same direction so that the top or bottom sheet can be made to travel in a direction differing from that of the remaining sheet or sheets. As shown, a pair of sheets c<1>, e<2> delivered from a photographic-printing machine by a conveyer band E are directed by a guide-plate F under a roller B charged electrostatically by a roller A in frictional contact, whereby the sheet e<1> is attracted and passes over the rollers B, A and back towards the feed end of the machine, and the sheet e<2> is delivered on to a table J. Should the forward end of the sheet e<2> be in advance of the sheet e<1>, the former is attracted by the roller B but falls away as soon as the latter is interposed. Alternatively, electrostatic lifters consisting of stationary devices or endless bands charged by friction, induction, or otherwise may be arranged above or below the sheets and may be separated from the sheets by screens of open-mesh insulating-material preventing contact therewith the screens may be fixed or rotary and may be in the form of a conveyer band.
Patent GB-877835-A (GB)
Title: Process for the manufacture of certain substituted naphthalene sulphonic acids
Filed: 1959-09-16
Abstract: 1-Acylamino - 2 - chloro-naphthalene-3-sulphonic acid or the corresponding 2-bromocompound are produced by the action of chlorine or bromine on the appropriate 1-acylamino-naphthalene-3-sulphonic acid (or the alkali metal salts thereof), the reaction being carried out in a medium comprising an anhydrous lower aliphatic carboxylic acid.  The products obtained can readily be converted into the corresponding 1-amino-2-chloro and -2- bromo-naphthalene sulphonic acids by splitting off the acyl group in an acid medium.  In the example, chlorine is passed into a solution of the sodium salt of 1-acetyl-amino-naphthalene-3-sulphonic acid in glacial acetic acid, at a temperature of 10 DEG C. whereupon 1-acetylamino - 2 - chloronaphthalene-3-sulphonic acid is precipitated.  This is filtered off, and may be boiled with hydrochloric acid to give 1-amino-2-chloronaphthalene-3-sulphonic acid.
Patent GB-701387-A (GB)
Title: Fire detecter or temperature-increase-detecter
IPC: H01H37/36
Filed: 1950-12-30
Abstract: 701,387. Temperature-responsive actuating elements. WHITEHORN, H. K. Dec. 31, 1951 [Dec. 30, 1950], No. 31667/50. Class 64(2) [Also in Group XXXVII] A fire-alarm comprises air-filled globes 4, 5, connected by a liquid-filled U-tube 6, the globe 5 being lagged, so that on a sharp temperature rise the air in globe 4 expands more rapidly than that in 5 and the liquid overflows down branch 7 into a pan 14 carried by a mercury switch 11 pivoted at 15 in an air-tight vessel 10, whereby to close circuit 12, 13. Alternatively, the overflow liquid may operate a balanced armature situated within a closed vessel, a magnet balanced outside the vessel being influenced by the armature to actuate a switch; or, the overflow liquid may upset a balanced pan to operate a valve. In another construction, Fig. 2, a float 26 in the limb 25 connected to the lagged globe 24 carries a magnet 27 by a spindle 28 to affect an armature 29 fixed to a pivoted mercury switch 30.
Patent GB-988095-A (GB)
Title: Ammonium nitrate compositions and methods for producing same
IPC: C01C1/18
Filed: 1961-09-04
Abstract: In a free-flowing microprilled ammonium nitrate composition especially suitable for use in a fertilizer or explosive at least 80% of the prills are less than 20 mesh, the prills containing not more than 5% of a hydratable inorganic salt and water in amount less than that required for complete hydration of the salt, there being less than 6% of the explosively inert materials present.  The compositions may have bulk densities of at least 62 lb./cu. ft. to in excess of 100 lb./cu. ft., whilst various preferred ranges of size and weight ratios are specified in detail.  The hydratable inorganic substance may be Mg, Al, Fe3+, Fe2+, Ca and Zn nitrates, also MgSO4, MgO, MgCO3 or mixtures thereof, the latter two compounds being changed to nitrates when added to molten ammonium nitrate. Additives such as talc, diatomaceous earth and surface active agents may also be added to the composition. The compositions may be made by prilling a molten mixture containing all the ingredients, e.g. by spraying through nozzles and the solid product may be optionally sieved to give the desired size ranges. For use in explosive compositions the ammonium nitrate prills may be mixed with carbon black, sawdust or oat hulls but preferably a hydrocarbon oil, e.g. 6% light fuel oil.  The explosive composition may be used in both wet or dry boreholes and the size of the prills is varied according to the size of the borehole.
Patent GB-507665-A (GB)
Title: Improvements in or relating to thermionic valve voltmeter and potentiometer circuits and the like
IPC: G01R15/14
Filed: 1937-11-18
Abstract: 507,665. Current and voltage measurements;potentiometers.; thermionic valves and amplifying circuits. BULL, C. S., and BLUMLEIN, A. D. Nov. 18, 1937, No. 31682. [Class 37] [Also in Group XL] A thermionic valve circuit functioning as a valve voltmeter or potentiometer, or as a monitoring arrange ment for a radio trans mitter, has the cathode connected through a high resistance to a point of fixed or reference potential, and the control electrode maintained at a steady potential with respect to the fixed potential, a positive potential applied to the anode producing a potential variation in the cathode circuit that is a fixed fraction of the potential applied to the anode. A continuouscurrent meter 4 can be arranged in series with the resistance R, Fig. 1, for measuring a D.C. anode potential, and the cathode C can be connected to an amplifier, or to an indicator responsive to A.C. potentials applied to the anode. If a shunt condenser 11 is employed, peak-voltage measurements can be made, and the capacitance of the cathode to earth can be utilized for this purpose. A low effective cathode impedance to frequencies covering a wide band may be obtained by making the grid G more positive and maintaining the cathode slightly positive thereto. The lower end of resistor R may be connected to a negative source. The potential to be measured can be capacitance coupled to the anode circuit. The derived cathode potential can be connected to a " cathode follower " valve, such as that described in Specification 477,392, and the meter reading in this valve circuit will then be proportional to the anode potential of the valve 1. Fig. 3 shows such an arrangement for measuring a high D.C. potential, or A.C. peak potential, a further high resistance 17, and the meter 14 being located in the cathode circuit of valve 15. A secondary transformer winding 21 supplies the heater currents to valves 1, 15. An adjustment of the meter "zero" can be effected by a tapping 18. The control grid is formed as, or provided with, a shield for preventing the cathode and its leads having leakage paths to the anode. Fig.. 2 shows an arrangement of valve electrodes, the grid G being coaxial with respect to the cathode and having shields comprising a cap 9 and skirt 10. The anode A is held in position by springs attached to the glass bulb and comprises a ring of thin wire interrupted at one or more points to prevent its destruction by eddy currents when gettering. The grid can comprise a slotted cylinder, and a thin wire on its axis the anode, the cathode and shields being located outside the grid. U.S.A. Specification 1,846,043 also is referred to.
Patent GB-1478892-A (GB)
Title: Junction box for motor vehicle electrical systems
IPC: B60L/
Filed: 1974-07-17
Abstract: 1478892 Junction boxes CAVIS-CAVETTI ISOLATI SpA 17 July 1974 [5 Dec 1973] 31731/74 Heading H2E A junction box for a motor vehicle comprises a hollow body 1 having sides 4 and a back 2, a bottom wall 13 slotting in guideways 12, a front wall 26, a tray 16 for housing electrical components, e.g. fuses, a transparent lid 23, and connector blocks (not shown) of the flat pin type in faces 26a and 13a. Teeth 31 are provided for snapping into a hole cut for example in the forward bulkhead of a vehicle whilst the box is secured by bolts in holes 7, 9, 11. The tray, when engaged in guideways 15 may be attached to the lid by screw 25. The connector blocks are interconnected within the box and may also be connected to fuses or other components such as switches housed within said box. (For Figure see next page.)
Patent GB-729414-A (GB)
Title: Improvements in or relating to coke oven doors
IPC: C10B25/12
Filed: 1953-11-16
Abstract: 729,414. Coke oven doors. KOPPERS CO., Inc., Nov. 16, 1953 [April 2, 1953], No. 31742/53. Class 55 (1). Coke oven door fastening mechanism comprises a latch bar 30 rotatably and slidably mounted on a support 20 fixed to the door, power means 72 moving the bar into door closing, co-operation with a door jamb structure 12 and locking means 52 automatically securing the bar when the door is closed thereby fastening the door and permitting disengagement of the power means. Sealing members 8 are bolted to the door and pressed against the jamb frame when brought against it by spring-loaded plungers 11. The latch bar support 20 comprises a spindle fastened to a casting 16 bolted to the door and has a head portion 22 which fits slidably within a recess 32 in the latch bar and is retained therein by a thrust bearing 36 held in a larger recess 34 by an end plate 38 A gripping knob 62 screwed to the outer face of the bar has a shoulder 68 for engagement by claws 70 of a bellows motor 72. To close the door the latch bar is placed in horizontal position by a lifter (not shown) and motor 72 brought against it, whereupon on expansion of its pressure chamber 74 the claws 70, by contact of lugs 98 near their pivots with the rounded head of the gripping knob, are caused to embrace the shoulder 68. A gripping engagement results from the expansion of the motor pressure chamber 74 and the doors and are retained in that position by the action of screws 106 as the thrust cylinder 84 with its sleeve 86 is pushed against projections on the door to move it into closed position. Further expansion of chamber 74 causes its face 76 and control shaft 90 on which the doors are mounted to move away from the door, the latch bar thus being pulled by the claws into engagement with latch hooks 58 on the jamb structure. In this position pressure fluid pipes 48<SP>1</SP>, 501 attached to the thrust sleeve communicate with fluid passages 48, 50 in the latch bar leading respectively to a conical recess 44 now aligned with a similar recess 54 in the head 22 and to a passage 60 also in the head. Admission of fluid to pipe 48<SP>1</SP> causes a tapered pin 52 to be driven from recess 44 into recess 54 so as to lock the latch bar. Unlocking is effected by admitting fluid to pipe 50<SP>1</SP> to displace the pin out of the door spindle recess.
Patent GB-658504-A (GB)
Title: Improvements in brakes for bicycles and like vehicles
IPC: B62L1/12
Filed: 1949-12-10
Abstract: 658,50,4. Cycle brakes. LAUZIER, R. Dec. 10, 1949, No. 31764. Convention date, Dec. 10, 1948. [Class 136 (i)] ] In a cycle or like brake of the type gripping the rim under the control of a cable 12 in a sheath 9, a wing nut 7 is provided having the shaft through which the cable passes guided in an opening in one of the jaws 3 of the brake and serving as a stop abutment of the sheath, the wing nut being displaced parallel to its axis when rotated and guiding the sheath in this displacement. The wing nut 7 is tapped longitudinally on a part of its length for the screwing of a sheath abutment 8 and bored for the passage of the cable 12. An abutment 4 fixed to the jaw 3 is bored longitudinally and has two helicoidal inclined planes 5 symmetrical relative to the axis of the abutment. Diametrically opposite notches 6 are -provided at the top of the two inclined planes and when the wings 10 of the wing nut 7 are supported in these notches the cable 12 is held in the normal working position. By rotating the nut 7 in the direction of the arrow 13 the wings 10 are supported at the bottom of the inclined planes 5, the cable 12 is relaxed and the brake jaws parted to allow the passage of the inflated tyre.
Patent GB-337182-A (GB)
Title: A new or improved pulley block
IPC: B66D3/04
Filed: 1930-07-10
Abstract: 337,182. Taylor, C. W. A. July 10, 1930. Pulley-blocks.-A sheave 4 is journaled on a pin 6 secured by bolts 7 to side straps 1 suspended from an eye 2, the sheave being arranged in a shell 3 fitted within the straps. An opening 10 in the shell for supplying lubricant to a recess 8 in the pin is normally closed by a plate 11 carrying a stud 12 extending through the recess and secured to the opposite side of the shell by a nut 13.
Patent GB-604488-A (GB)
Title: Improvements in or relating to lead azide compositions and detonators containing same
IPC: C06B45/02
Filed: 1945-11-26
Abstract: "Ultra-short fibre" nitrocellulose, viz: having a fibre length between 30 mm. and 250 mm. and preferably between 50 mm. and 150 mm., is preferably prepared by subjecting nitrocellulose to viscosity reduction treatments to bring its viscosity (measured in a concentration of 40 gm. in 100 cc. of aqueous acetone S.G. 0.8097 at 20 DEG  C.) between 0.3 and 0.5 c.g.s. units at 20 DEG  C.  The fibre may be prepared (a) by directly kiering a fibrous nitrocellulose under pressure, and washing the product or (b) by treating nitrocellulose with boiling aqueous ammonia at ordinary pressure with subsequent bleaching at raised temperature and stabilization by water boiling.  A stabilizer, e.g. calcium carbonate, may be incorporated in the fibre.
Patent GB-697905-A (GB)
Title: Tetrahydrobenzaldehyde acetals
IPC: C07C47/42
Filed: 1949-12-12
Abstract: The invention comprises the dimethyl and diethyl acetals of D 3-tetrahydrobenzaldehyde, and the manufacture of these and other acetals by reacting an aldehyde of the general formula <FORM:0697905/IV (b)/1> (wherein R1, R2, R3, R4, R5 and R6 represent hydrogen or alkyl or aryl radicals or two of them form a bridge grouping) with a saturated aliphatic monohydric alcohol in the presence of an acetalization catalyst (e.g. a strong mineral or organic acid) under substantially anhydrous conditions, preferably at room temperature or below. Preferred starting materials are those in which R1, R3, R4 and R6 represent hydrogen and either R5 represents hydrogen and R2 a lower alkyl or mononuclear aryl radical or R2 and R5 jointly represent a bridge grouping, e.g. -CH2-.  The reaction may be effected by dissolving the aldehyde in the alcohol, adding the catalyst (advantageously also dissolved in the alcohol) while cooling to 16-20 DEG  C. or below, and allowing the mixture to stand. In examples, D 3-tetrahydrobenzaldehyde is reacted with: (1) ethyl alcohol in the presence of hydrogen chloride; (2) ethyl alcohol in the presence of sulphuric acid; (3) methyl alcohol as in (1). Additional starting materials specified are 5-methyl-, 2 : 5- and 3 : 4-dimethyl-, 2 : 2 : 5 : 5-tetramethyl-, 2-phenyl-, 2 : 5-endomethylene-and 2 : 5-endoethylene- D 3-tetrahydrobenzaldehyde, and the condensation products of acrolein with 2-methyl- and 1 : 1-dimethylbutadiene.ALSO:A frothing agents in the froth flotation of minerals may be employed acetals of the general formula <FORM:0697905/II/1> wherein R1, R2, R3, R4, R5 and R6 represent hydrogen or alkyl or aryl radicals or two of them form a bridge grouping, and R7 represents an alkyl radical.
Patent GB-451321-A (GB)
Title: Improved device for signalling defects in the operation of an internal combustion engine, particularly for motor cars
IPC: B60R16/023
Filed: 1935-11-18
Abstract: 451,321. Alarms for indicating abnormal working conditions. ETABLISSEMENTS E. JAEGER, 2, Rue Baudin, Levallois- Perrett, Seine, France. Nov. 18, 1935, No. 31935. Convention date, Nov. 19, 1934. [Class 7 (ii)] The closure of the ignition switch also closes a circuit to a lamp 1 or solenoidal windings 12, 13 controlling a pointer 17 from which run two branch circuits 4, 5, switches 6, 7 in which are responsive to lubricat - ing-oil pressure and to cooling-water temperature. If the ignition switch 3 is closed while the engine is stationary or if the lubricating-oil fails, the switch in the corresponding branch circuit closes. Similarly, excessive radiator temperature is indicated, but to distinguish the indications from each other, a resistance 8 in the heat-responsive circuit may cause the lamp to glow less brightly than when oil pressure is defective. When the windings are used, that in the oil circuit may be of preponderant effect. The two forms of indicating device may be used in parallel.
Patent GB-984974-A (GB)
Title: Improvements in or relating to vacuum measuring devices and apparatus
Inventor: SINCLAIR IAN ROBERTSON
IPC: H01J41/04
Filed: 1962-08-21
Abstract: 984,974. Ionization manometers. ENGLISH ELECTRIC VALVE CO. Ltd. May 30, 1963 [Aug. 21, 1962], No. 31997/62. Heading H1D. A vacuum-measuring device comprises an envelope 1, adapted to communicate with a pumped space, and containing a cathode 3, an anode 7 and a charge-storage member 5, 6. Ions produced by electronic bombardment of gas remaining within the envelope produce a charge on member 5, 6 which controls the current flow to anode 7, so that the anode current varies in dependence upon the gas pressure. As shown, cathode 3 is surrounded by an accelerating grid 4, a metal gauze electrode 5 having an inner, secondary-electron-emitting coating 6 of magnesium fluoride and an anode 7. During operation, positive pulses are applied to member 5, 6 to cause secondary emission, so that after each pulse coating 6 is negatively charged relative to gauze 5 and prevents flow of electrons therethrough. Subsequent collection of positive ions on coating 6 grandually restores electron flow to anode 7, so that the anode current a predetermined time after each pulse, or the time taken for the anode current to reach a predetermined amplitude, is a measure of the vacuum.
Patent GB-1072022-A (GB)
Title: Plasma arc generator with a fluidised bed electrode
IPC: H05H1/32
Filed: 1965-07-27
Abstract: Acetylene is produced from methane or hydrogen and carbon in a plasma generator (see Division H5) in which an arc is struck between an electrode and a fluidized bed of graphite.ALSO:Phosphorus is produced from Ca3(PO4)2 in a plasma generator (see Division H5) in which an arc is struck between an electrode and a fluidized bed of graphite. A powdered mixture of Ca3(PO4)2, SiO2 and carbon is conveyed by argon to the plasma and P condensed from the effluent gas.  CaC2 is produced in a similar apparatus from lime powder and carbon, the graphite becoming carbide coated.