baber/WOPTO huggingface dataset:
Patent GB-845302-A (GB)
Title: Improvements relating to mine roof supporting frames
Inventor: FARR PETER
IPC: E21D23/08
Filed: 1957-05-29
Abstract: 845,302. Mine roof supports. DOWTY MINING EQUIPMENT Ltd. May 29, 1958 [May 29, 1957], No. 17091/57. Class 20(2) A mine roof support comprises three telescopic props 12 pivotally mounted on a common base 10 and carrying a roof bar comprising a rear section 22 and a cantilever section 21 joined by a hinge pin 24 with a spring 39 to maintain them substantially in line when not engaged with the mine roof. A third section 20 is hinged at 23 to the section 22. The props 12 are each joined to the roof bar by a conically headed bolt 29 which passes through a bearing plate 28 to extend with clearance into a conical recess in the head of the prop. A bolt 32 securing the section 21 has a longer shank extending through a bearing box 33. The bases of the props are convex with a central spigot which engages a hole in a mounting plate within the base which also contains resilient means to urge the props upright (Fig. 1b not shown, refers). A moving jack 76 is provided below the cantilever section 21. The spring 39 may be located by a stud instead of the socket 38 shown or may be replaced by a torsion spring around the hinge 24, the ends of the spring bearing on the undersides of the sections 21, 22. (Figs. 6 and 7, not shown, refer). Where the roof bar comprises only two sections the rear section 22 is weighted to assist in the contraction of the prop in compensation for the weight of the cantilever. Where the props are hydraulic, pressure fluid is supplied from a channel 81, Fig. 11 through radial bores 84 in a removable plug 83 to a channel 85 leading to the front prop. To contract the prop a valve (not shown) is operated to give access through a valve 86 to the return pipe via a bore 87 which is small enough to retard the contraction. The bore 85 of the rear prop will be smaller and the bore 87 larger than that of the cantilever prop to compensate for the unequal loading.
Patent GB-617271-A (GB)
Title: Improvements in electric heating elements
IPC: H05B3/00
Filed: 1946-06-05
Abstract: 617,271. Electric heating resistances. PROCEDES SAUTER. June 5, 1946, No. 17103. Convention date, July 13, 1945. [Class 39 (iii)] In a radiant heater for a cooker, radiator or the arch of a furnace, with coiled resistances 2 located in recesses 9 in a refractory lining 3 in a straight metal casing 1 with a flat bottom, the lining comprises several separate abutting plates 3 held in the casing by an end insulating, member 4 carrying terminals 6 and screwed at 5 to the casing 5. The end lining plate 7 is recessed so that the element passes from one groove to the next. The casing 1 has edges bent over the plates 3 and has a curved flexible tongue 8 for mounting.
Patent GB-1514614-A (GB)
Title: Supercharged reciprocating-piston internal-combustion engine
IPC: F02B37/00
Filed: 1976-04-27
Abstract: 1514614 Exhaust gas turbo-chargers MOTOREN-UND TURBINEN-UNION  MœNCHEN GmbH 27 April 1976 [30 April 1975] 17118/76 Heading F1B An exhaust gas turbo-charger for a reciprocating piston I.C. engine comprises a turbine rotor 2 and a blower 1 mounted on a common shaft, a duct 15 supplying air via throttle valve 16 from the blower to the exhaust pipe 12 of the I.C. engine, and a combustion chamber 5 which receives fuel via bore 7 and air and exhaust gas via tangential deflectors 21, the combustion products of which drive the turbine. The quantity of fuel/air is adjusted to compensate for low or zero flow-rates of exhaust gas and throttle valve 16 may be responsive to a turbine fuel control unit or the accelerator of the I.C. engine. The I.C. engine exhaust pipes may enter the housing 6 tangentially. Atomization of the turbine fuel is assisted by the rotation of the fuel jets 8.
Patent GB-724147-A (GB)
Title: Steroids
IPC: C12P33/00
Filed: 1952-07-08
Abstract: The invention comprises 11a , 17a , 21-trihydroxy-4-pregnene esters of carboxylic acids and the preparation thereof by reacting 11a , 17a , 21-trihydroxy-4-pregnene-3,20-dione with an acylating agent, e.g. an acid anhydride, an organic carboxylic acid or an acyl halide.  The 11, 17a , 21-trihydroxy-4-pregnene-3,20-dione may be obtained by aerobically contacting 17a , 21 - dihydroxy - 4 - pregnene - 3,20 - dione with the oxygenating activity of fungus of the order Mucorales, e.g. Rhizopus nigricans, Rhizopus arrhizus or Cuninghamalla Blakesleeana.  The 21 - acyloxy - 11,17a  - dihydroxy - 4 - pregnene - 3.20-dione may be reacted with an oxidizing agent, e.g. chromium trioxide in acetic anhydride, to produce 21-acyloxy-17a -hydroxy-4-pregnene-3,11,20-trione. Examples describe the production of 21-acetoxy-11(a  or b ),17a -dihydroxy - 4 - pregnene - 3,20 - dione, 11a ,21 - diacetoxy - 17a  - hydroxy - 4 - pregnene - 3,20 - dione, 21 - propionyloxy - 11(a  or b ),17a  - dihydroxy - 4 - pregnene - 3,20 - dione, the corresponding esters using trimethylacetyl chloride, b -cyclopentylpropionyl chloride and benzoyl chloride and 11a ,17a ,21-trihydroxy-4-pregnene-3,20-dione and cortisone. Specification 724,094 is referred to.
Patent GB-612919-A (GB)
Title: Apparatus for the illumination and display of objects
IPC: F21S13/00
Filed: 1946-06-06
Abstract: 612,919. Displaying. HANSEL, C. W. June 6, 1946, No. 17217. [Class 3(ii)] Display equipment comprises a framework structure consisting of spaced vertical members 7 recessed or otherwise adapted for the insertion and support of one of more shelves 3-6, and longitudinal members 13-18 connecting the vertical members either directly or through the medium of accessory fitments, the framework being adapted to support one or more inclined mirrors 10-12 so that an unobstructed view of the display on the shelves may be provided for spectators within a desired horizontal range. In the arrangement shown in Fig. 6, the shelves, which may be glass plates, are received in recesses 19 in bracket extensions on the members 7, and the longitudinals 13-18 are secured to the vertical members by fasteners passing through holes 20 in the vertical members. The longitudinals may be recessed to receive the edges of the mirrors 10-12 and the shelves 3-6, and they may be of tubular from, being built up of two co-operating members if desired. Each vertical support may consist of two upright members connected by transverse members for supporting the shelves, and the side edges of these uprights may be recessed to receive glass or like plates serving to close the framework. The shelves may be illuminated by a lamp which is attached to the framework together with a reflector; alternatively, a lamp suspended from the ceiling of the room in which the apparatus is located co-operates with a horizontal mirror to illuminate the shelves. The framework may be secured to a wall by fasteners passing through holes in the vertical members, or it may be supported on a substructure 30, as shown in Fig. 6. In the modification shown in Fig. 8, the vertical supports, which are connected by longitudinals 57, comprise arms slotted at 52a-52d for the slidable reception of adjustable members 53, 55a, carrying, respectively, a shelf 54 and pivotally-mounted mirror 55. In another form, each vertical member consists of a vertical rod 58, Fig. 9, which has a foot 59 and carries a vertically-adjustable channel 60 for supporting a shelf 54, and a vertically-adjustable sleeve 62 supporting a pivotally-mounted mirror 55. As applied to a window display, apparatus constructed as described above may be mounted as shown in Fig. 7 in front of a partition 32. The base structure is in the form of a display cabinet 30 fitted with an inclined mirror 45 in which can be viewed an optical image produced on a translucent shelf 37 by a cinematograph projector co-operating with an inclined mirror 35; the base 42 of the cabinet is illuminated by a lamp 43 and its top constitutes a shelf 47 for co-operating with an inclined viewing mirror 46. Above the cabinet 30, the apparatus comprises a screened shelf 40 carrying objects which can be manipulated through an opening 39 in the partition 32 and viewed in an inclined mirror 49; a translucent shelf 38 also co-operates with an inclined mirror 36 and cinematograph projector to provide for an optical image to be viewed in an inclined mirror 50.
Patent GB-782011-A (GB)
Title: Improvements relating to the recovery of sulphur values from waste gas as sulphuric acid
IPC: C01B17/90
Filed: 1952-07-08
Abstract: Waste gas containing hydrogen sulphide and carbon disulphide both in such low concentration that the gas mixture is non-inflammable, is treated for the recovery of sulphur values therein as sulphuric acid by catalytic oxidation.  The waste gas, containing or mixed with oxygen or air, is pre-heated by heat exchange with already reacted gas to a temperature at which reaction will take place over a catalyst for the production of sulphur trioxide, the pre-heated gas being passed over such a catalyst and the sulphur trioxide formed converted into sulphuric acid in known manner.  The waste gas may or may not also contain carbon oxysulphide and/or sulphur.  The invention is particularly concerned with waste gases occuring in viscose manufacture. According to an example a waste gas mixture which is saturated with moisture at 25 DEG  C. and contains 0.61 per cent carbon disulphide and 0.79 per cent hydrogen sulphide is pre-heated by already reacted gas to 200 DEG  C. and passed over a vanadium catalyst arranged in layers.  The reacted gas is then cooled by the pre-heating of the incoming gas to a temperature of 260-360 DEG  C., at which temperature formation of condensate in the reacted gas cannot take place.  The reacted gas is then passed through a tower fed with 78 per cent sulphuric acid which circulates through a cooler.  The acid mist formed is electrostatically precipitated, if desired after moistening the gas with water and the acid flowing from the electro filter may be passed to the cycle of the absorption tower.  The catalytic apparatus is preferably arranged for a reversal of the direction of flow of gas whereby the two ends of the catalyst bed are successively subjected to a gas entry temperature of about 200 and a gas exit temperature of about 400 DEG  C.  Conventional catalyst such as the metals of group 1 and 3-8 of the periodic table may be used and such catalysts may be regenerated by treating them at above 400 DEG  C. with sulphur dioxide and excess of oxygen.
Patent GB-646244-A (GB)
Title: Improvements in apparatus for counting impulses or determining the rate of occurrence of impulses
Inventor: COOKE-YARBOROUGH EDMUND HARRY
IPC: G01R23/10
Filed: 1948-06-28
Abstract: 646,244. Frequency measurement. MINISTER OF SUPPLY. June 28, 1948, No. 17264. [Class 37] [Also in Group XIX] In apparatus for determining the rate of occurrence of impulses, such as electrical impulses from a G.M. counter, by measuring the time taken for the occurrence of a predetermined number of impulses, additional impulses of a known frequency are added to those under measurement in order to reduce the counting period with low impulse rates such as occur when making background counts for radioactive measurements. The apparatus may comprise a scaling circuit adapted to reset the stylus of a timing printer to zero at the end of each count. The impulses under measurement are applied to the scaling circuit together with impulses derived from a constant frequency source which also drives the stylus across a recording surface to record the times of successive counts. In the apparatus shown, how ever, a differential gear 5 adds the impulses. A division (e.g. by 10 or 100) of the impulses from a G.M. counter 1 is made by a scaling unit 2 and the resultant pulses are applied to a magnetic clutch 3 to produce corresponding incremental rotations of a shaft 4. A second shaft 6 is similarly given incremental rotations of constant frequency by a clutch 7 controlled by a timer 8. The rotations of the two shafts are added by the differential 5 and fed to a counter 10 which generates a stop signal at the conclusion of each count. The stylus of a recording printer 9 is also driven by the timecontrolled shaft 6 and is re-set to zero by the stop signal at the conclusion of each count, the lengths of successive traces indicating the times taken. The clutch 7 may be omitted and the shaft 6 driven continuously by a constant-speed motor.
Patent GB-1337176-A (GB)
Title: Syrup for treating diarrhoe in baby pigs
IPC: A61K9/00
Filed: 1971-05-26
Abstract: 1337176 Antibacterial compositions YAMANOUCHI PHARMACEUTICAL CO Ltd 26 May 1971 [6 June 1970] 17291/71 Heading A5B Aqueous suspension syrups for treating diarrhoea in baby pigs, the syrups containing 1 - (5 - nitro - 2 - furyl) - 2 - (6 - amino - 3 - pyridazyl) ethylene, (nifurprazine), a sweetening agent and a cellulose derivative, are prepared by suspending 1 - (5 - nitro - 2 - furyl) - 2 - (6 - amino - 3 - pyridazyl) ethylene free base in water, using a cellulose derivative as suspending agent, and adding a sweetening agent to the suspension. The cellulose derivative may be methyl-, carboxymethyl-, hydroxypropyl or sodium carboxymethyl-cellulose and the sweetening agent may be sugar or saccarin. The syrups are administered orally and may also contain microcrystalline cellulose, a diluent, a surface active agent, a thickening agent and/or a preservative.
Patent GB-1368925-A (GB)
Title: Mechanically actuated disc brake
IPC: F16D65/14
Filed: 1973-04-11
Abstract: 1368925 Spot-type disc brakes; automatic adjustment for wear BENDIX CORP 11 April 1973 [13 April 1972] 17410/73 Heading F2E A spot-type disc brake 10 has a caliper 22 slidably mounted on a fixed support 24, and an actuating mechanism 40 within a chamber in the caliper 22 comprises an axially slidable extendible member formed by a piston 32 and an adjusting screw 36 in screw threaded interengagement and also a pair of camming plates 42, 48 having complementary recesses 50, 52 separated by spheres 54, camming plate 48 being rotatable to move the extendible member 32, 36 and apply the brake 10: to adjust for wear of friction pads 18, 20 the screw 36 is rotatable by plate 48 to extend the length of the extendible member 32, 36 by means of a mechanism 68 comprising a first clutch means 74, 76, 78 which permits the plate 48 to initially rotate through a predetermined arc upon actuation of the brake 10 without causing rotation of the screw 36, and a second clutch means 80 which is arranged to allow rotation of the screw 36 by the camming plate 48 upon brake actuation after the camming plate 48 has rotated through the predetermined arc but permits the plate 48 to rotate relative to the screw 36 upon brake release. As shown, the camming plate 48 is provided on an actuating lever 46 whose outer end is connected to an actuator, e.g. a fluid pressure actuator, and the camming plate 42 is fixed: the recesses 50, 52 are formed with ramps. A pin 60 extends through screw 36 and through plates 42, 48 and has a head 64 engaging screw 36 whilst a spring 66 mounted on the other end biases the actuating mechanism 40 to a brake released position. The first clutch means comprises a sleeve 74 received in a section 70 of a bore 60 in screw 36 and formed with keys 76 projecting into slots 78 in the plate 48, each of which extend through an angle A plus the width of the key 76. The second clutch means comprises a spring 80 disposed in a bore 82 of sleeve 74 and also in a smaller diameter section 72 of bore 60 in screw 36. When brake application is effected plate 48 is rotated and by the action of spheres 54 in ramped recesses 50, 52 the plate 48 is moved leftwards to move extendible members 32, 36 to apply pad 18, whilst pad 20 is applied by reaction. Should plate 48 rotate through an angle greater than A the sleeve 74 will start to be rotated and by the action of the spring 80 the screw 36 will be rotated with it to adjust the length of the extendible member 32, 36; should the actuating force be high, however, frictional torque between the threads 38 will prevent this rotation thereby preventing adjustment during a "panic stop". When the brake is released the plate 48 is rotated back and moves rightwards and the sleeve 74 rotates back as well. However, in this direction of rotation of sleeve 74 the spring 80 slips relative to section 70 while turning with sleeve 74 and the screw 36 therefore does not move from its adjusted position.
Patent GB-1396227-A (GB)
Title: Castors
IPC: B60B33/02
Filed: 1973-04-11
Abstract: 1396227 Castors HAPPE & CO 11 April 1973 [24 April 1972] 17433/73 Heading A4U [Also in Division F2] In a castor a brake lever 11 is pivoted on a bolt 10 secured to the castor fork 4 and carries at its rear end a splayed arm 16, a pivoted foot pedal 17 being operative to spread the arm 16 relative to the brake lever 11 so as to engage a braking area 14 with a mounting plate 3 to act as a swivel lock and to engage a braking area 15 with the periphery 5'of the castor wheel 5. The bolt 10 engages elongated slots 11 " in the lever side walls and an adjusting screw 12 is provided for moving a wedge 13 which engages the bolt 10 for adjusting the height of the lever 11 at the bolt. The braking area 14 is formed as a bolt which may engage corresponding ratchet teeth on the plate 3, and the arm 16 is formed as a leaf-spring rivetted to the brake lever 11. The pedal 17 is pivoted to the lever 11 by a link 19, and adjusting screws 21 are provided for varying the spread of the arm 16. A spring 22 biases the brake lever 11 to its raised release position. In a second embodiment, Figs. 3 and 4 (not shown), a U-shaped foot pedal having its legs on opposed sides of the rear end of the brake lever 11 is pivoted to the lever by a bolt engaging elongated slots in the lever side walls, the pedal having a bridge part engaging the leafspring 16. Adjusting screws in the lever 11 engage the bolt to vary the spread of the leaf-spring 16. The ends of the legs of the foot pedal are turned outwards to form actuating lugs which when pressed releases the foot pedal and the brake lever. In a third embodiment, Fig.5 (not shown), a foot pedal is linearly non-displaceably pivoted to the rear end of the brake lever 11 and it carries an adjustable screw which engages the leaf-spring 16. In a fourth embodiment, Fig.6 (not shown), the splayed arm 16 is a spring-loaded forked member pivoted at one end to the rear end of the brake lever and it has a transverse web for engaging the wheel periphery 5'. A foot pedal is pivoted to the other end of the forked member and the pedal is shaped so that when it is operated it presses against the brake lever to spread the forked member against its spring-loading into its wheelengaging position.
Patent GB-1392303-A (GB)
Title: Flexible composite sheet material
IPC: D06N3/00
Filed: 1971-05-27
Abstract: 1392303 Coated sheet materials IMPERIAL CHEMICAL INDUSTRIES Ltd 10 May 1972 [27 May 1971] 17469/71 Heading B2E A flexible composite sheet material comprises, as a support material, a woven or non- woven textile web, a fibrillated interlayer consisting of a multiplicity of filamentary or tuftlike projections extending from, integral with and of the same material as, a sheet or coating adhesive to the textile web, and a top coating of a polymeric material which is adhered to the filamentary or tuft-like projections on the fibrillated interlayer. The fibrillated interlayer may be of a dissimilar material to that of the support material and may consist of a fibrillated coating on or fibrillated sheet which is laminated to the support material. Preferably the fibrillated interlayer comprises a multiplicity of filamentary or tuft-like projections which extend from a perforate or imperforate sheet or coating of a polymeric material. The sheet or coating may be located on a perforate support material in which case the projections will extend through the interstices in the support material. The interlayer may be made by either pressing the softened polymeric material through a perforate support material into contact with a heated surface or by interposing a softened polymeric material between the support material and a heated surface, separating the support material and polymeric material from the heated surface so that tufts or filaments of the polymeric material are formed between the support material and the heated surface, which tufts or filaments being bonded to the support material eventually separate from the heated surface and remain as a pile on the support material. Alternatively the interlayer may comprise an embossed coating of a polymeric material provided on the support material. The embossed pattern is preferably in the form of a multiplicity of closely spaced fibrils having a suede-like appearance. The support may be a woven, non-woven, knitted fabric, bonded web, hessian, cotton knit or scrim. The fibrillated interlayer may be formed of polymers and copolymers of vinyl chloride, vinyl acetate, acrylonitrile, ethylene and propylene and condensation polymers, e.g. polyamide, polyesters, polyurethanes. The top coating may be polyvinyl chloride, polyurethane, polymethyl glutamate, nylon, polyethylene, terephthalate, polyethylene. The top coating may be applied by transfer coating from a paper sheet which may be plain or embossed.
Patent GB-956911-A (GB)
Title: Beryllia silicon carbide ceramic bodies
IPC: C04B35/575
Filed: 1962-05-07
Abstract: A refractory body is made by forming a mixture of silicon carbide and beryllia in a volume proportion of from 10:90 to 90:10, shaping the mixture into the form of the body and heating it in a non-oxidizing atmosphere so that incipient fusion of the particles occurs. The shaping and heating may be effected simultaneously by hot pressing, or the body may be preformed and then sintered.  In shaping the body a temporary binder may be used, e.g. polyvinyl alcohol or water.
Patent GB-1077340-A (GB)
Title: Thermocopying devices
IPC: G03B27/30
Filed: 1966-04-21
Abstract: 1,077,340. Thermocopying apparatus. G. RITZERFELD. April 21, 1966 [May 8, 1965], No. 17587/66. Heading G2A. In a thermocopying apparatus, the original and copy sheets are passed in contact between a glass cylinder 14, within which is an infrared heater 22, and a counter-cylinder 13, the pressure between the two cylinders being adjustable by means of a spring 18. Cooling is provided by a motor-driven blower 3. As the sheets are inserted through an opening 24, they engage a switch arm 25 which starts the drive motor 2 and the blower motor 4, and energizes the heater. Fig. 2 (not shown) is a circuit arrangement including a time delay. Thus when the rear edge of the sheets has passed the switch 25, the heater is switched off, but the motors operating the cylinder drive and the blower continue for a predetermined time, so avoiding overheating. The delay may be provided by an RC component, a bi-metallic switch, or a clockwork mechanism.