baber/WOPTO huggingface dataset:
Patent GB-1536338-A (GB)
Title: Gas burning appliances
IPC: F24C3/04
Filed: 1977-06-13
Abstract: 1536338 Imitation solid fuel gas fires RICHARD BAXENDALE & SONS Ltd 13 June 1977 [11 June 1976] 24183/76 Heading F4W A gas fire comprises one or more radiant units 8 supported on a firebrick 90 to define a passage therebetween, a gas burner 7 to direct flames through the passage, pieces of artificial fuel 15 supported by the unit(s) 8, and a flue arrangement 6 including a duct 20 having an opening 28 through which air can pass to dilute the combustion products and a baffle 34 arranged to direct any back-draught in the duct 20 towards the opening 28. Air enters the opening 28 via openwork areas 4 of the sides of a casing 1 of the gas fire. A further baffle 35 prevents low pressure in duet 20 from affecting operation of the burner 7. The or each unit 8 is of inverted open channel-section, is made of ceramics or stainless steel, and is in two parts 11, 12 arranged at an angle. The part 11 is perforate whereas part 12 may be imperforate. The parts 11, 12 may alternatively be made in one piece from a perforated metal sheet, e.g. expanded metal. The gas fire is otherwise substantially as described in Specification 1,506,168.
Patent GB-1345561-A (GB)
Title: Process for preparing a water-absorbent laminate
IPC: E04D5/02
Filed: 1971-04-19
Abstract: 1345561 Coated sheet materials DOW CHEMICAL CO 19 April 1971 [24 Feb 1970] 24206/71 Heading B2E [Also in Division B5] A water-absorbent laminate is produced by impressing upon a fibrous support a waterswellable, essentially water-insoluble polymer as a gel substantially swollen with water and heating the laminate at 100-200‹C. to remove at least a major part of the water contained by the water-swollen gel and to bond the polymer to the fibrous support. The aqueous gel may be coated on one or both sides of a woven or unwoven fabric such as cotton cloth, rayon, wool, surgical gauze, burlap, or paper. Multilayer laminates can be made with two or more layers of the fabric base, or the aqueous gel can be mixed with loose fibres of cellulose, asbestos, to make a composite sheet which itself may be bonded to a supporting sheet. Suitable polymers include cross-linked polymers and copolymers of acrylamide, polyacrylate salts, polymers and copolymers of vinyloxazoladinone, vinyl pyrrolidinone, methacrylate salts, and salts of styrene sulphonates, styrene-maleic anhydride copolymers crosslinked by reaction with a glycol. Preferred polymers are cross-linked polymers of acrylamide produced by polymerisation of a solution of 2-20 weight percent acrylamide in water in the presence of 0.002-0.5 mole percent of a diene cross-linking monomer and subsequent partial hydrolysis with alkali metal hydroxide to convert up to 50% of the carboxamide groups in the polyacrylamide to carboxylate groups. The fibrous support may be first impregnated with a cationic polymer such as polyethylenimine, polyalkylene polyamine, polyvinyl alcohol or a cationic derivative of polyacrylamide such as a linear polymer of acrylamide in which at least 5 mole percent of the combined monomer units are N-dimethylamino methylacrylamide moieties and the remaining units correspond to monoethylenically unsaturated monomers copolymerisable therewith, at least half of the monomers being hydrophilic to ensure water-solubility with the finished copolymer. Applications mentioned are facial tissues, portable base for an ice rink, a roof covering, bandages, dressings, undersheets, moisture-barriers in porous soil.
Patent GB-165870-A (GB)
Title: Improvements in and connected with keys and key-levers for typewriters and like machines
IPC: B41J5/14
Filed: 1919-03-03
Abstract: 165,870. Harrington, F. C. A. March 3, 1919. No Patent granted (Sealing fee not paid). Keys.-Relates to keys made from metal blanks and having integral stems, and to a form of integral spacing-key and lever. The key shown in Fig. 1 is made from a blank which is doubled to form a finger-piece a and an integral stem c having shoulders f and spaced ends d for engaging the end of the key-lever. The key is detachably secured by the engagement of a projection or tongue e with a recess in the key-lever; or screws or pins may be used. The finger-piece may be stamped with a character or may be cut out to receive a character-disc. The key a shown in Fig. 3 is integral with the key-lever h, one of the stem-parts c forming a continuation of the keylever. The key-levers may be formed with open slots for engaging a pivot rod. The spacing-key k, Fig. 7, extends along the front and sides of the keyboard and is formed with an integral inner flange l having side extensions m which are pivoted to the framework. Key actions.-To permit detachment of keylevers n, Fig. 8, from a pivot-rod o, the key-levers are formed with open slots n for receiving projections p on the rod. The projections permit of the key-levers rocking independently but prevent them from moving longitudinally. When the keylevers are to be detached, the rod is moved longitudinally to bring the projections into the spaces between the key-levers: any key-lever can then be lifted off the rod. A pin may be provided for holding the rod in the normal or the released position. The key-levers may be spaced by means of fingers on the base.
Patent GB-1425848-A (GB)
Title: Electrical traction systems incorporating a dc motor and to vehicles including such systems
IPC: B60L7/12
Filed: 1973-05-22
Abstract: 1425848 Control of D.C. motors ETABS E RAGONOT 22 May 1973 [24 May 1972] 24394/73 Heading H2J  A separately excited motor in a traction system has both the armature 1 (Fig. 1) and field 2 (Fig. 2) current controlled and has the armature connected to a plurality of parallel paths each containing a transistor switch 4 and a series inductance 5 with a diode 8 shunting the inductance and armature. Preferably each switch comprises one or more transistors, Fig. 3 (not shown). The transistor switches are switched on by the output of fixed frequency pulse generator 10, which sets the bi-stable circuit 12 and are switched off by the output of variable frequency pulse generator circuit 9 which resets the bi-stable circuit 12. The potentiometer 19, which is connected to an accelerator pedal 20, determines the output frequency of the pulse generator 9 which includes a unijunction transistor, a capacitor, resistors, diodes and a further transistor, Fig. 4 (not shown). If the voltage level at point 28 is excessive, e.g. under overload conditions, pulse generator 11 emits a resetting pulse to bi-stable 12. The field winding 2, Fig. 2, is connected in series with a transistor switch 70 and is controlled in accordance with the armature current by means of a link to point 28 in the armature circuit. In operation the output waveform of a sawtooth generator 76 is added at 78 to a voltage proportional to armature current, developed across capacitor 82, to produce a pulse waveform, the pulse width being portional to armature current. The pulses pass to a device 72 which has an adjustable threshold level provided by potentiometer 86. An alternative threshold level which alters with the position of accelerator pedal 20 is provided by potentiometer 87 supplied through a threshold device from a tachometer 91 so that once a predetermined speed has been reached the accelerator position also determines the excitation of the field winding. Pulse generator 11 is described, Fig. 5 (not shown). Regenerative braking can be provided by additional circuitry, Fig. 7 (not shown), which includes a comparator for comparing the armature voltage with a reference signal supplied to a braking pedal potentiometer and the resulting signal is used to control field excitation.
Patent GB-1074465-A (GB)
Title: Control device for winches
Inventor: WALSH RALPH EDWARD
IPC: B66C13/06
Filed: 1965-06-09
Abstract: 1,074,465. Winches. BREEZE CORPORATION Inc. June 9, 1965, No. 24409/65. Heading B8B. A cable guide 19, Fig. 5 for a hoist has a spherical seating 23 to permit rocking movements as the cable swings with the load and which actuates a trip switch 15 through cam faces 25 and a spring-loaded plate 26 to stop the winch in the event of an excessive swing. The switch 15 may also operate remote indicator lights. An axially slidable cylindrical section 21 of the guides engaged by a bumper 35 on the winch cable to actuate the switch 15 and stop the hoist at its upper limit of travel. The apparatus is particularly adapted for use with hoisting gear on a helicopter.
Patent GB-950085-A (GB)
Title: Improvements in or relating to conveyor mechanisms for use in sterilising and preserving apparatus
Inventor: ROBINSON LESLIE ERNEST
IPC: A23L3/00
Filed: 1960-07-14
Abstract: 950,085. Endless conveyers. MITCHELL ENGINEERING Ltd. June 9, 1961 [July 14, 1960], No. 24520/60. Heading B8A. In a conveyer of the kind described in Specification 756,740 the article supporting bars are of the cross-section shown shaded in Fig. 1, each bar providing two surfaces 4, 5, each supporting a respective row of articles. The articles 2, 3, are retained in position by flanges 8, 9. Flanges 9, 10 on respective adjacent bars may be sufficiently closely spaced to prevent the ingress or the egress of the containers when the conveyer is moving in a straight line. When the conveyer is moving in a curved path there may be sufficient space between the flanges 9, 10 to per. mit the passage of the articles 2, 3.
Patent GB-812660-A (GB)
Title: Device for printing addresses
IPC: B41L13/02
Filed: 1957-08-02
Abstract: 812,660. Stencil addressing-machines. STIELOW, J. H. Aug. 2, 1957 [Sept. 19, 1956], No. 24539/57. Class 100(2) In a device for printing addresses in which an inking roller is connected with a hand lever by means of a rocking arm with a knee joint action so that on en countering the stencil plate or card it is displaced relatively to the hand lever, the free ends of the arm are guided in rigid tracks which comprise a portion uniformly spaced from an inking member and a portion uniformly spaced from the stencil plate so that the inking roller traverses the region of the inking member with a light pressure thereon and then in the region of the stencil plate it rolls over the latter with a suitable and always uniform pressure. On rotating a hand lever 3 pivoted to the base 1 at 2b, an inking roller 5 mounted on an arm 4 pivoted to the lever at 2c is moved over an inkpad 10 and then over a stencil addressplate 12. Rollers 7 mounted on the arm 4 run in guide tracks 8, 8a so as to maintain uniform pressure of the roller 5. The stroke of the roller 5 is limited according to the number of lines of impression to be made by limit pins 8c selectively placed in apertures 8b. The address stencils are mounted in housings 11 and supported by blade springs 13. Internal springs 14 cranked at their left-hand ends from a stop for smaller stencils, larger ones seating against the edge 11a of the housing 11. Pins 15 secured to blade springs 16 act as stops for the paper to be printed. For larger sheets, pusher members 17a are displaced by rods 17 out of the region of the spring 16, which carry the pins down. wardly. The stencils are fed in series from a magazine.
Patent GB-1096301-A (GB)
Title: 1,4-benzodioxane derivatives
Inventor: SHAPERO MAURICE
IPC: C07D319/20
Filed: 1963-06-20
Abstract: Compounds of the general formula <FORM:1096301/C2/1> (wherein R is a hydrogen or halogen atom or an alkyl or alkoxy group having 1-6 carbon atoms, each of R1 and R2 is a hydrogen or halogen atom, an alkyl group having 1-6 carbon atoms or an alkoxy group having 2-6 carbon atoms, and n is 2-6) and their acid addition salts are prepared by reacting a compound of the formula <FORM:1096301/C2/2> with a compound of the formula <FORM:1096301/C2/3> (wherein one of X and Z is a halogen atom and the other is a primary amino group), optionally followed by salt formation.  The compounds of the invention have sedative and hypnotic activity.
Patent GB-1442637-A (GB)
Title: Method of stiffening supporting or diemnsionally stabilising a substrate
IPC: C08L1/00
Filed: 1973-05-23
Abstract: 1442637 Laminates DEUTSCHE GOLDUND SILBER - SCHEIDEANSTALT 23 May 1973 [23 May 1972] 24565/73 Heading B5N [Also in Division B2] A substrate is stiffened by locally attaching a material comprising at least one backing of fibrous material and at least one thermoplastics containing at least 3 parts carbon black, subjecting the structure to ultra-high frequency radiation, forming the resulting structure and allowing it to cool. The stiffening material may be coated on one or both sides with an adhesive based on a thermoplastic plastics. The fibrous material may be woven, non-woven or knitted fabrics of natural and/or synthetic fibres, e.g. cotton, rayon, staple, polyester, polyacrylonitrile, polyamide. Alternatively the stiffening material may be made up of a base fabric and a covering fabric. Leather fibres can also be used. Thermoplastic plastics materials mentioned are homopolymers or copolymers of styrene, styrenebutadiene or styrene-acrylonitrile copolymers, styrene-acrylate copolymers or styrene-acrylonitrile - butadiene terpolymers, polychlorobutadienes, polyvinyl acetate, polyacrylates or polymethacrylates, polyvinyl chloride, polyvinylidene chloride, nitrile rubber, ethylenevinyl acetate copolymers or terpolymers and ionomeric resins. Natural resins, phenol resins, maleic resins, modified colophony resins may be added. The adhesive may be based on polychlorobutadiene, polyvinylacetate, polyacrylic acid esters, ethylene-vinyl acetate, copolymers or nitrile rubber optionally containing natural resins, phenol resins, maleic resins, modified colophony resins. The carbon may be provided in a thermoplastic impregnant or coating, in the adhesive coating or in the form of intermediate layers between the adhesive coating and the natural stiffening material. The stiffening materials can be used for stiffening, supporting and permanently dimensionally stabilizing preferably the toe and heel sections of shoes, for stiffening and dimensionally stabilizing headwear or luggage goods. Suitable pieces are cut out or punched out and locally attached, e.g. by stitching to the substrate to be stiffened. The whole is then introduced into a microwave oven before basting and forming.
Patent GB-792722-A (GB)
Title: Improvements relating to fluid pressure-operated rotary actuators
IPC: F15B15/08
Filed: 1956-08-10
Abstract: 792,722. Fluid-pressure engines. KOPPERS GES., H. Aug. 10, 1956 [Aug. 10, 1955], No. 24585/56. Classes 122 (2) and 122 (3). [Also in Group XXIX] A double-acting piston having piston-heads 3, 4 and reciprocating in a cylinder 1 is connected through a freewheel device 8 to an output shaft 60 so that a step-by-step rotation is given to the shaft. The free-wheel device is enclosed in a fluid-tight casing 54, 55, part 54 being integral with the cylinder. Piston head 3 is of greater area than head 4 and for a working stroke, gas is supplied through an inlet 11 under the control of a valve 13 to act on the head 3. Valve 13 is closed when gas is admitted to a chamber 26 to act on a diaphragm 24 connected to the valve, and is opened by the pressure of the gas supply acting on the head 14 of the valve when chamber 26 is opened to exhaust. Valve 13 may also be opened and closed by a hand wheel 36 co-operating with collars 33, 12, formed on the valve stem. Gas is supplied through a port 41 to act on the head 4 for a return stroke. The stroke is adjusted by means of an abutment 48 screwed into the piston head 4, the abutment being adjusted by means of a shaft 50 having a square portion extending into the abutment.
Patent GB-633910-A (GB)
Title: Improvements in wrapping machines
IPC: B65B45/00
Filed: 1947-09-06
Abstract: 633,910. Packing tobacco &c. by wrapping up. ROSE, A. G., PEARSON, F. H., and ROSE BROS. (GAINSBOROUGH), Ltd. Sept. 6, 1947, No. 24597. Drawings to Specification. [Class 94(i)] The subject-matter of this Specification is substantially the same as that described in Specifications 633,907, 633,908 and 633,909, but the claims differ. In addition, the auxiliary wrapper supports (marked 17 in Fig. 5 of Specification 633,907) may be slidably instead of pivotally mounted.
Patent GB-870420-A (GB)
Title: Pipe-supporting apparatus, more particularly for well-heads
IPC: E21B33/04
Filed: 1959-07-17
Abstract: 870,420. Oil wells. McEVOY CORPORATION. July 17, 1959 [Oct. 13, 1958], No. 24691/59. Class 85. Tubing, suspended in a well casing 16, is supported by taper slips 51 arranged in a ring between the tubing 18 and a hanger body 40 having a conical bearing surface 50 for the slips, the angle between the faces of the slips being less than the angle between the tubing 18 and the surface 50 so that the lower parts only of the slips engage the surface 50, if the load on the slips is small, and as the bearing surface 50 is increasely distorted as the loading increases, the slips bear on the surface over an increasing part and ultimately over the whole of their height. Fig. 1 shows the tube suspending apparatus in a "no load" position, the lower members of the teeth 53 only engaging the surface 50. The body 40 is accommodated in the casing head 10 which has a tapered seat 22 on which a taper surface 41 bears when the load is applied. A packing 64, between rings 60, 66, is secured to the body 40 by bolts 73, the upper ring being bevelled at 70 to be engaged by lockscrews 71. The lower ring 60 seats on the seat 22 so that when the body 40 is pulled down by the load, the body 40 separates from the ring 60 and the bolts 73 pull down the ring 66 to compress the packing 64. The load forces down the slips to distort the lower parts of the body 40 outwardly, so that the surface 50 ultimately is strained to conform with the slope of the slips. Recesses 43 in the body 40 ensure that flow to and from ports 35, 36 is unobstructed. The differential taper of the slips 51 and the surface 50 is small and has been exaggerated in the drawing for clarity. A differential taper of a few degrees, usually about one degree, is mentioned.
Patent GB-247183-A (GB)
Abstract: 247,183. Farkas, P., and Szoke, F. Feb. 6, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Helico-centrifugal apparatus.-Mixture is supplied to the cylinders of an engine by a helicocentrifugal pump T on the engine crank shaft V. A number of similar inclined cells C are formed in the pump rotor, each cell decreasing in crosssection towards the delivery side t'. The rotor moves between two plates A<1>, A<2> in each of which is formed a groove R', R<2> of varying depth. The groove R<1> forms the inlet to the rotor and the groove R<2> collects the compressed mixture.
Patent GB-1596995-A (GB)
Title: Electroplating chromium and its alloys
IPC: C25D3/06
Filed: 1977-06-14
Abstract: Chromium or a chromium alloy is electrodeposited from an aqueous bath solution which contains a chemically equilibrated thiocyanatochromium(III) complex and a buffer material. The buffer material forms a ligand of the complex in the equilibrated solution.
Patent GB-361404-A (GB)
Title: Improvements in or relating to electric insulators
IPC: H01B17/02
Filed: 1930-08-19
Abstract: 361,404. Insulators. HERMSDORFSCHOMBURG-ISOLATOREN GES., Hermsdorf, Thuringia, Germany. Aug. 19, 1930, No. 24805. Convention date, Aug. 19, 1929. [Class 36.] To obtain a uniform distribution of pressure between the pin-head 5 and the cavity wall of a suspension insulator 1, the pressure-transmitting blocks 7 are formed with faces conforming in shape to that of the cavity wall and are arranged to tilt on the pin-head, so as to be capable of adjustment with respect to the cavity wall. The blocks 7 may each be formed with a horizontal ridge 81 extending over the centre of the block and adapted to abut against the pin-head, as shown, or a ridge formed on the pin-head may abut against flat blocks The ridge 81 may be replaced by raised protuberances. A layer 6 of flexible material, such as cardboard, may be disposed between the blocks 7 and the cavity wall. The cavity is finally filled with lead 8.
Patent GB-627392-A (GB)
Title: Improvements relating to arm and spindle slide locking mechanism of radial drilling machines
IPC: B23Q1/28
Filed: 1947-09-11
Abstract: 627,392. Drilling-machines. ASQUITH, Ltd., W., and JOHNSON, A. Sept. 11, 1947, No. 24916. [Class 83 (iii)] A hand lever A or the like is provided on the spindle slide B of a radial-arm drilling machine for the purpose of actuating both mechanism for feeding and unlocking the spindle slide B in relation to the arm C and also an electric switch D controlling a motor E which is capable of rotation in one direction only for actuating the arm-locking mechanism. The lever A is mounted on a shaft A<SP>2</SP> carrying a shoe B<SP>2</SP> for clamping the spindle slide B to a slideway C<SP>1</SP> on the radial arm C which is mounted on a pillar K. A cam A<SP>3</SP> on the shaft A<SP>2</SP> also actuates the switch D through a spring-loaded plunger A<SP>4</SP> and a bell-crank D<SP>1</SP>, D<SP>2</SP>. The motor E is mounted on a box J which is screwed to the arm socket encircling the pillar K, and encloses mechanism comprising pinions, a worm E<SP>3</SP> and worm-wheel E<SP>4</SP> for rotating a shaft E<SP>5</SP> carrying three cams. The centre one of these cams actuates a forked arm E<SP>8</SP> which is pivoted within a hollow lever E<SP>10</SP> provided on a shaft E<SP>11</SP>. The vertical movement of the lever E<SP>10</SP>, the position of which is adjusted by a screw E<SP>12</SP>, is communicated to an endwise-movable stud E<SP>13</SP> carrying a self-aligning pad E<SP>14</SP> which is thereby forced against the pillar K; a similar pad C<SP>3</SP> acts on the opposite side of the pillar K. The other two cams on the sleeve operate bell-cranks L3, M3 controlling switches L<SP>4</SP>, M<SP>4</SP> which are inter-connected with the switch D and a three-way switch F positioned on the slide B for controlling the motor E. When the motor E is set into operation, it will continue to run until one of the switches L<SP>4</SP>, M<SP>4</SP> has been tripped by its cam and at this stage the locking cam will have caused the application of the pad E to the pillar. One setting of the three-way switch renders the motor E inoperative so that movement of the lever A only locks the slide. The second setting renders the motor operable so that movement of the lever A will lock both the arm and the slide, and the third setting operates the motor independently of the hand lever. A signal G to indicate that the arm is locked is provided on the slide. The motor E is so interconnected with the motor for raising and lowering the arm that the latter cannot operate while the arm is locked.
Patent GB-220190-A (GB)
Title: Improvements connected with postal knockers
IPC: A47B95/02
Filed: 1923-10-08
Abstract: 220,190. Barker, F., (trading as Barker Bros.). Oct. 8, 1923. Knockers. - The knocker 7 is hingedly connected to a pair of lugs 6 formed integral with the back-plate 3 and hangs below the letter aperture 4 provided with a cover. The ends of the screws 9 engage recesses 8 in the lugs. When the arms of the knocker work against the inner faces of the lugs, the pins 9 pass through the knocker arms and engage holes formed in the lugs.