baber/WOPTO huggingface dataset:
Patent GB-729805-A (GB)
Title: Improvements relating to pit props
Inventor: BEYER RUDOLF
IPC: E21D15/54
Filed: 1953-05-22
Abstract: 729,805. Pit props. BECORIT-GRUBENAUSBAU GES. May 22, 1953, No. 14524/53. Class 20 (2). A pit prop has two footplates of different size, the smaller footplate 2 being rigidly secured to the bottom 1 of the prop and having a shallow domed surface 4, and the larger footplate 5 having a cavity 6 which will receive the smaller footplate 2 with a clearance at the sides, the larger footplate 5 being detachably secured to the smaller footplate 2 by means of bars 8 which are held by screws 11 upon the upper surface of the footplate 5 and are spaced vertically from the rim 3 of the lower footplate 2 and horizontally from the lower prop member 1. The surface of the cavity 6 has a shape corresponding to the curvature of the surface 4 of the smaller footplate 2, and when the prop is used on a soft floor with the larger footplate 5 attached, relative rocking movement can occur between the prop and the footplate 5. When the prop is used on a hard floor the footplate 5 may be detached and the face 4 of the smaller footplate 2 placed against the floor.
Patent GB-549188-A (GB)
Title: Improvements relating to cardboard boxes
IPC: B65D5/42
Filed: 1941-11-11
Abstract: 549,188. Closures for cardboard boxes. BAMBER, W. Nov. 11, 1941, No. 14544. [Class 18] Cardboard boxes, e.g. for cereals or biscuits in paper bags or cigarettes in small cartons are made by folding a blank such as shown into an open-ended tube, the ends of which are thereafter obturated wholly or in part by flaps 15 cut from one or more of the sides which are bent back over the ends and engaged in slits 16 in the opposite sides or in flaps cut from the opposite sides, or in the flange of another panel.
Patent GB-1247102-A (GB)
Title: Urea derivatives, their manufacture and use as herbicides
IPC: C07C275/34
Filed: 1969-03-20
Abstract: 1,247,102. Herbicides containing chloroethoxyphenylureas. FARBWERKE HOECHST A.G. 20 March, 1969 [20 March, 1968], No. 14637/69. Heading A5E. [Also in Division C2] Herbicidal compositions comprising as active ingredient a compound of formula wherein R 1  is CH 3 , CF 3 , Cl, R 2  is H, CH 3 , R 3  is CH 3 , OCH 3 , stated to be novel, together with a carrier and if desired a wetting agent, adhesive, dispersing agent, grinding auxiliary, granulating agent or a further biocidal agent or fertilizer, are applied to the weed habitat. Suitable further herbicides are listed and fall within the classes of urea, triazine, urazil, pyrazone, carbamic acid and dinitro-phenol derivatives, growth-  promoting preparations, chlorinated aliphatic acids and amides, dipyridilium compounds, anilides and nitriles.
Patent GB-101876-A (GB)
IPC: F28D1/053
Filed: 1916-10-14
Abstract: 101,876. Espujols, R. L. d'. Oct. 16, 1915, [Convention date]. Combined surface and jet condensers.- A condenser radiator for steam automobiles comprises an injector 4 in which the steam mixes with cooling- water, and air-cooled condensing-tubes 7. The cooling - water from a water reservoir enters the radiator by an inlet 1 and fl o w s upwards through lateral casings 2 to the injector 4. The ir:jector consists of water nozzles 3 surrounded by converging - diverging nozzles 5 to which the steam flows from the interior of the central casing. The water of condensation is returned to the water reservoir by an outlet 8. The tubes 7 may be ribbed, and a fan may be disposed behind the battery of tubes
Patent GB-378546-A (GB)
Title: Improvements in and relating to kinematographic film feed mechanism for cameras, projectors, printing apparatus and the like
IPC: G03B1/22
Filed: 1931-05-18
Abstract: 378,546. Kinematograph apparatus. VINTEN, W., North Cicular Road, Cricklewood, London. May 18, 1931, No. 14657. [Class 97 (i).] Intermittent feed mechanism of the claw-andregister pin type has a rotating balance disc carrying a crank pin which functions in less than a half revolution and accomplishes the whole of the necessary motions and the correct timing of the film. As shown in Fig. 9, the feed mechanism comprises a spindle a driven from the main shaft d and carrying a balanced crank disc e from the pin f of which depends a bracket g within which reciprocates the rod h carrying the feed pin i. The rear end of the rod h is connected to a beam k pivoted at m and carrying a pin n connected by a rod o to an arm p on the pin f, the upper end of the arm p being pivoted to a lever g. Pivoted on the beam k is a link t, the pin s<1> of which is linked by a rod u to a pin v on a crosshead w reciprocating in guides on the bracket y and carrying the register pins z. The rod u has a hollow pin terminated by a collar running in the guide 2, and the pin v on the crosshead enters or leaves the bore in the hollow pin when the gate is moved laterally. The other end of the rod u carries a projection 3 held in contact with the link t by a spring 4. Depression of a knob separates the abutting faces and withdraws the register pins. As shown in Fig. 4, transverse movement of the film together with the register pins and the substitution of a focusing screen is effected by withdrawing and rotating a knob on the spindle 15, which causes the pinion 10 to move a rack 11 fixed to the extension 12 of the plate 8. The upper edge of the bar 12 has two indents 13, 13a determining the limits of travel by the engagement therewith of the spring-urged disc 14 attached to the spindle 15, on which is a disc having an indent to clear a disc attached to the gear which drives the crank shaft a. Clearance only exists when the film is in the taking position.
Patent GB-253898-A (GB)
Title: Improvement in machines for making wire fabric
IPC: B21F43/00
Filed: 1925-08-06
Abstract: 253,898. Spirella Co. of Great Britain, Ltd., (Assignees of Bowler, W. E.). June 17, 1925, [Convention date]. Drawings to Specfication. Making metal fabrics; shearing.-A machine for making wire fabrics, particularly those formed of oppositely disposed overlapping loops for corset stays, consists of a mechanism for forming the fabric, a severing mechanism, means actuated by the forming mechanism for feeding the fabric to the severing mechanism, and means for intermittently actuating the severing mechanism, and means for varying the periodicity of the operating cycle of the severing mechanism relatively to the operating speed of the forming mechanism. The machine further comprises the combination of mechanism for forming the fabric, severing mechanism to which the fabric is fed, and means for intermittently actuating the severing mechanism, comprising a clutch, an automatirally reversible mechanism, and means controlled by the reversible mechanism for actuating the clutch. The mechanism is fully described in Specification 253,855. Specifications 12593/09 and 14333/12 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers to Specification 21282/10. This reference does not appear in the Specification as accepted.
Patent GB-471337-A (GB)
Title: Improvements in thermionic valve relaxation oscillation generator circuits
IPC: H03K4/12
Filed: 1936-05-25
Abstract: 471,337. Valve generating circuits. LUBCKE, H. R. May 25, 1936, No. 14729. [Class 40 (v)] A relaxation oscillator comprises a valve having three grids G<1>, G<2>, G<3>, the grid G<1> being connected to the cathode K, the grid G<2> to a positive bias 11, and the third grid G<3> to the first grid through a condenser 8 and to a less positive bias 14, the anode being connected to the cathode through a condenser 18 and to an intermediate positive bias 17. The valve is a highvacuum valve, and the oscillations are taken off through the lead 22. An alternating- current generator 19 produces pulses, at or near the desired frequency, which are applied to the grid G3 and if desired to the other grids or the plate. The device operates by reason of the secondary emission from the grid G<3> and frequencies of from 120 to 6000 cycles may be obtained with amplitudes of from 2 to 75 volts.
Patent GB-1341095-A (GB)
Title: Conveyor system
IPC: F26B21/02
Filed: 1971-05-13
Abstract: 1341095 Drying cans on conveyers; heating articles MIDLAND-ROSS CORP 13 May 1971 [9 June 1970] 14761/71 Headings F4G and F4U [Also in Division B8] Articles, such as aluminium cans 16 to be heat treated or dried in a chamber 12 and cooled in a chamber 14, are conveyed through these chambers by an endless conveyer belt 11. The latter has a load-carrying surface having open areas comprising 3 to 10% of that surface. This results in a pressure difference being developed across the belt by the passage of heating/drying or cooling air and this tends to retain the cans by suction in position on the conveyer belt. As shown, the belt is formed by bent flat wire members 55 to which slats 59 are secured. The spaces between the slats provide the 3 to 10% open areas. The heating/drying air flow is provided by fans 17, 17. The flow is controlled by annually adjustable flaps 39, 42, 43 and 44. Fresh or make-up air enters through the exit (45) (Fig. 1, not shown) of the aparatus and through an opening 40. The firing of burners (Fig. 1, not shown) is controlled by thermocouples TC so as to maintain a desired temperature. The plane of the conveyer belt may be vertical instead of horizontal. In a modified arrangement (not shown), articles are suspended upside-down from the underside of a lower run of a conveyer belt. The articles can be discharged from the belt by cutting off the air supply.
Patent GB-874603-A (GB)
Title: Process for the manufacture of hydroperoxides from terpene hydrocarbons
IPC: C07C409/14
Filed: 1959-04-30
Abstract: A process for the manufacture of hydroperoxides of terpene hydrocarbons, e.g. p-methane, comprises the steps of oxidising the hydrocarbon up to a hydroperoxide concentration of about 5-10% with oxygen or a gas containing oxygen, rapidly and thoroughly mixing the resulting hydroperoxide solution with a dilute aqueous solution or alcoholic suspension of a hydroxide or carbonate of an alkali metal or alkaline earth metal and forming an upper layer consisting of hydroperoxide and hydrocarbon and a lower layer which contains some hdyroperoxide and hydrocarbon, decanting the upper layer and washing it with water, methanol, glycol, or other suitable washing liquid, and feeding the lower layer back to the alkali washing process.  A solution of pure hydroperoxide is obtained.  This solution may be submitted to further oxidation in one or more stages, in which the same procedure is followed, until a solution containing up to 30% of hydroperoxide is obtained.  The oxidation may be carried out with air or oxygen, if desired with addition of ozone, at temperatures of 100 DEG -140 DEG C. and at pressures from 1-10 atmospheres.  The alkali washing may be p  carried out in a centrifugal or turbulence pump so as to reduce the treatment time to less than 5 seconds.  The process may be carried out in continuous fashion, and the solution of hydroperoxide may be concentrated by evaporating the hydrocarbon solvent.
Patent GB-1018979-A (GB)
Title: Improvements in or relating to methods of removing thin metal layers by spark erosion
IPC: B23H9/06
Filed: 1963-04-16
Abstract: 1,018,979. Spark erosion. PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd. April 16, 1963 [April 19, 1962], No. 14850/63. Heading B3. Part of a thin metal layer 2, Fig. 1 (not shown), on an insulating or semi-conducting base 1 is removed by spark erosion between the layer and a pin electrode 4. This has an oblique face 5 and is rotated whilst being traversed across the layer 2. The invention is used in the manufacture of precision capacitors and resistors, and optical image amplifiers.
Patent GB-1478435-A (GB)
Title: Percussive device
IPC: E21B1/26
Filed: 1975-04-10
Abstract: The intention is to be able to reduce the wear and permit easier starting. The percussion apparatus has a housing (1) to which a tool can be fastened. A piston (27) with a head (4) is axially movable in a reciprocating manner in a cylinder space in the housing. A sleeve-shaped, axially movable control valve (7) concentrically encloses the piston in such a way that the cylindrical inner face forms a cylindrical wall of the cylinder space surrounding the head. A front chamber (8) is formed in the cylinder space on the percussion side of the head. The front chamber (8) is separated from the control-valve space (6) of the control valve by a housing shoulder (28) surrounding the head. There is a passage (13) in the cylindrical surface of the head in order to produce a pressure-fluid connection between the front chamber and the control-valve space at the level of the end of the percussion movement of the piston. On the other hand, the pressure-fluid connection is interrupted near the end of the stroke movement of the piston (27) by the head (4) and by the shoulder (28). The pressure fluid required for the control of the control valve (7) can thus be obtained in a simple manner from the front chamber (8) of the cylinder space through the passage (13) in the piston head. <IMAGE>
Patent GB-1390824-A (GB)
Title: Echo-sounding device
IPC: G01S15/12
Filed: 1972-03-30
Abstract: 1390824 Echo-sounding BOFORS AB 30 March 1972 [2 April 1971] 15165/72 Heading H4D Relates to a pulse echo sonar of pulse recurrence periods (PRP)T in which echoes of echo time greater than T are suppressed by varying the transmitter carrier frequency from pulse to pulse in a cyclic manner, the receiver tuning being varied in a corresponding manner. In such a system if the repetition period of the cyclic frequency variation is nT, e.g. n = 4, then the receiver will still accept unwanted echo pulses having an echo time of between nT and (n + 1 )T and according to the present invention the receiver is prevented from accepting a regular sequence of such unwanted echo pulses by arranging that when the receiver accepts an echo pulse of carrier frequency f i  during any one recurrence period m then the cyclic frequency variation is interrupted and the carrier frequency of the next (m+1)th transmitter pulse is held at f i , the normal frequency variation being resumed at the next recurrence period (m + 2) as shown in Fig. 2i, for n = 4 and f i =f3 so that for an echo time between nT and (n + 1)T an echo is only accepted by the receiver every (n+1)th recurrence period as described with reference to Fig. 3b (not shown). As shown in Fig. 1, if no echo pulses are received then the frequency of the transmitter 3 is varied cyclically in four steps between f1 and f4 by a logic unit 5 in response to transmitter trigger pulses a, Fig. 2, applied thereto through a normally enabled gate 4. If during the mth recurrence period an echo pulse Cl is received (of frequency f3 as shown in Fig. 2), then a corresponding electrical pulse c from a signal processor 7 is applied through a normally enabled gate 8 to trigger a monostable 9 thereby producing corresponding negative and positive pulses e and f both of duration T, the negative pulse e being applied to disable the gate 4 so that the carrier frequency of the next transmitted pulse is f3 (see Fig. 2i), and the positive pulse f being applied to enable a normally disabled gate 10 to select the next trigger pulse g which triggers a monostable 11 to produce a negative pulse h of duration T which disables the gate 8 so that if an echo pulse c2 is received during the (m+1)th recurrence period it is unable to prevent the logic unit 5 from stepping the transmitter frequency to its next value f4 for the succeeding recurrence period (m+2). Fig. 4 (not shown), illustrates the behaviour of two adjacent devices A, B, and Fig. 5 (not shown), illustrates the behaviour of two adjacent devices A, B and an adjacent object. The figures illustrate that continuous interference between adjacent devices and objects outside the normal range of the device is avoided. The invention is applied to a proximity fuze.
Patent GB-1504754-A (GB)
Title: Locks
IPC: E05B63/04
Filed: 1975-04-14
Abstract: 1504754 Lock LAPERCHE 14 April 1975 [18 April 1974] 15180/75 Heading E2A In a lock, the bolt 4 is engaged in all positions by a lever 11, the lever 11 being rotatable by a door handle follower 5 except that when the bolt 4 is locked e.g. by tumbler 26, lever 11 is rotated so that it does not interfere with the follower 5.
Patent GB-1378284-A (GB)
Title: Apron
IPC: A41D13/04
Filed: 1973-03-29
Abstract: 1378284 Aprons LONG MELFORD PROLUCTS Ltd 29 March 1973 15184/73 Heading A3V [Also in Division A4] An apron comprises a panel 10 of woven nylon material having a waterproof coating thereon and having a first portion 11 to protect the chest of a wearer and a second portion 12 to protect his trunk and a kneeler 22 of padded material connected to the bottom edge of the portion 12 to extend therefrom in a first posiion in which it is usable as a kneeling mat, the kneeler being provided with female press stud portions 26 engageable with male portions 27 on the panel 10 so that the kneeler 22 may be held in a second position against the panel 10 out of contact with the wearer. Bindings 17 are disposed at arcuate edges of the first portion 11 and provide body ties 18 and a neck loop 19 which is adjustable by the threading of one of the bindings through two rings 21 secured in a loop 20 in the other binding. A semi-circular pocket 13 is provided on the front of the apron and this is divided into two quadrants by stitching 14. The waterproof coating for the panel 10 is preferably of acrylic or polyurethane resin. The kneeler 22 is made of a polyester fibre padding sandwiched between layers of water-proof coated woven nylon material, the layers being quilted together by stitches 24.
Patent GB-1101444-A (GB)
Title: Improvements in planographic plate image reinforcement
IPC: B41N3/08
Filed: 1965-04-09
Abstract: The image on a lithographic printing plate is reinforced by treatment with an emulsified lacquer composition in which the dispersed phase comprises a resin compound, formed by reaction of a chloromethylated diphenyl oxide with a phenolic compound, dissolved in a solvent which is immiscible with the dispersing phase of the emulsion.  The solvent may be methyl isobutyl ketone, di-isobutyl ketone, ethyl isoamyl ketone, cyclohexanone, amylacetate, methoxy-butyl acetate, or "Cellosolve" (Registered Trade Mark) acetate.  The solvent in the dispersing phase may be water, glycerol, ethylene glycol, other aliphatic polyhydric alcohol, or mixtures thereof.  There may also be added (1) a lithographic desensitizing agent such as phosphoric acid or salts thereof including hexamethaphosphates, citric acid or salts thereof, silicic acid or salts thereof including colloidal silica, gum arabic, carboxymethyl cellulose, (2) a colourant to render the image visible, such as a dye or pigment, (3) a thickening agent such as polyvinyl alcohol or methyl cellulose, (4) a wetting or emulsifying agent, (5) a fungicide or bactericide, such as phenolic preservatives.
Patent GB-1387380-A (GB)
Title: Flow velocity measuring device
IPC: G01P5/14
Filed: 1973-03-29
Abstract: 1387380 Measuring fluid-flow YOKOGAWA ELECTRIC WORKS Ltd 29 March 1973 [27 April 1972] 15259/73 Heading G1R In a flow velocity measuring apparatus a tubeshaped detecting means 1 is placed in a fluid path to create Karman's vortices to enable the frequency at which such vortices are produced and shed to be a measure in terms of velocity, and a detecting element 5, such as a hot wire, within the tubeshaped detecting element 1 detects the suction and discharge of fluid through holes 22, 24 and 21, 23 due to the generation and shedding of vortices controlling the separating points of the boundary layer on the outside of the tube-shaped detecting means 1. Sectional segmental chambers 31, 32 between a core member 3 intercommunicate via a through bore 33. The ports 21, 22 and 23, 24 may be spaced in different manners and have a circular or slot-like configuration.
Patent GB-985449-A (GB)
Title: Improvements in and relating to electric systems for producing signals representative of a picture or visual image
IPC: G06V30/162
Filed: 1962-04-19
Abstract: 985,449. Automatic character reading. PHILCO CORPORATION. April 19, 1962 [April 21, 1961], No. 15271/62. Heading G4R. Signals representing an image are produced in two levels (black and white) from signals substantially representing the sum of second spatial derivatives of brightness of the image in two directions. The cathode ray tube 10 produces a spot scanning in a horizontal raster over the paper 11 and the reflected light is received in a photocell 13. The scanning spot is given a wobble either of focus or in vertical position, so that transitions from white to black and back give a ripple rather than a straight slope. The presence of a black or white area adjacent the scanning line will also produce a ripple as the wobble causes the boundary to be cut. The wobble is produced by an oscillator 15, this also sends a signal via a frequency doubler to a demodulator which receives the photo-cell signal through a band-pass amplifier. The output of the demodulator consists of pulses at the beginning and end of a black area which are used to set and reset a flip-flop 22 to produce a two-state signal corresponding to white and black sections of the image.
Patent GB-976956-A (GB)
Title: Self-extinguishing epoxy resins
IPC: C08G59/32
Filed: 1963-04-18
Abstract: Self extinguishing shaped articles are manufactured by a process which comprises the curing of a fluid resinous composition of a polynuclear glycidyl ether having an average of more than two oxirane groups per molecule, a catalytic or co-reactive curing agent therefor, and a halogenated polynuclear phenol having at least two hydroxy groups per molecule, the halogenated phenol being present in such an amount as to provide no more than 0.45 hydroxyl equivalents per oxirane equivalent. The epoxy resin may be an epoxylated novolac. The halogenated phenol may be an halogenated novolac resin, or an halogenated bisphenol.  Curing agents specified are benzyldimethylamine; BF3: monoethylamine; maleic phthalic, succinic, hexahydrophthalic and pyromellitic anhydrides; trisdimethylaminomethylphenol, dicyandiamide; polyamides; methylnodic anhydride and 4,41-methylenedianiline. Additional fire-retardants such as antimony trioxide, and solvents such as acetone and dimethylformamide may also be added. A non-halogenated polynuclear phenol or novolac may also be added to the compositions castings, coatings and laminates may be prepared by the process.