baber/WOPTO huggingface dataset:
Patent GB-317594-A (GB)
Title: Improvement relating to coal-cutting machines
IPC: E21C31/00
Filed: 1928-07-04
Abstract: 317,594. MacKnight, R. J. F. July 4, 1928. Coal-cutting machines. - In a coal-cutting machine of the endless-chain type wherein the cutter-jib is capable of being moved longitudinally of the machine, the drive to the cutter chain is through a clutch which is adapted to be uncoupled to permit such longitudinal movement. A housing 7 is slidable on an arcuate guide 9 on the head 10 of the machine and carries plates 6 which enter slots 18 in the jib and support the latter by means of feet 14; slipper bars 15 may be provided between the feet 14 and the jib and enlarged openings are provided at one end of the slots 18 to permit withdrawal of the feet 14. The housing 7 has rack teeth 11 engaged by a worm 12 driven by a hand-wheel 13 whereby the jib is slued. The. motor 40 drives, through gearing 39. 38, a shaft 32 carrying a clutch sleeve 31 with depending fingers 30 adapted to engage a sprocket 24 whereby the cutter chain is driven. The clutch sleeve may be raised by a lever 36 adapted to be held by a gate 37, and the jib is then free for longitudinal movement which is effected by a pinion 45 driven from the underside of the gear 38 and acting through a clutch 46, gears 47 and a worm 48 engaging a rack 50 on the jib; girders 54 below the motor form a housing for the jib when in retracted position. A worm 41 above the gear 38 acts through a worm wheel 42, bevel gears 43 and a shaft 44 to drive the haulage gear. The cutter chain is tensioned by means of a slide block 52 adjusted by a screw 53.
Patent GB-346620-A (GB)
IPC: E01C11/16
Filed: 1930-06-25
Abstract: 346,620. Pyrometers. SOC. C.E.M.A., 236, Avenue d'Argenteuil, Asnieres, Seine, France. June 25, 1930, No. 19361. Convention date, July 16, 1929. [Class 97 (iii).] To measure temperature, the effect of radiation from a distant hot body on a photo - electric cell is compared with the effect of radiation from a standard source. The variations in resistance of the cell due to radiation from the hot body are amplified and read by a milliamperemeter. An equal deflection of the milliamperemeter is then obtained by exposing the cell to the standard source and varying the voltage applied to the source. The voltage thus applied is a measure of the temperature of the hot body. Alternatively the distance of the standard source from the cell may be varied or the source may be fixed and fitted with an adjustable diaphragm. Thermometric calibration is effected by sighting the opening of a furnace containing fusible cones. The Figure shows one form of apparatus for carrying the method into effect. The metallic casing 1 is carried by and turns in the bracket 4 which can be orientated on the stand 2. Sights 24, 25 direct the casing towards the hot body, the radiation from which passes through the lens 10 to the cell 11. A mirror 12, the position of which is indicated by pilot lamps 22, 23, is adapted to turn so as to cut off the radiation from the hot body and reflect the radiation from the standard source 13 on to the cell. The voltage applied to the lamp 13 is adjusted by the potentiometers 15, 16 and indicated by the voltmeter 14. The cell 11 is included in a Wheatstone bridge and its variations are amplified by the three-electrode valve 17 and indicated by the milliamperemeter 6. A potentiometer 28 for bringing the valve 17 to its most sensitive state is included in the Wheatstone bridge. A diaphragm adapted to be adjusted according to the emissive power of the hot body is placed in front of the lens 10. A filter, allowing only infra-red radiations to pass and having a diaphragm cutting out the edge of the sensitive portion of the cell is preferably used. A piece of opal glass may be placed in the plane of this diaphragm.
Patent GB-186202-A (GB)
Title: Improvements in the manufacture and production of thymol
IPC: C07C37/00
Filed: 1921-07-18
Abstract: Thymol and an isomer thereof are prepared by treating m-cresolsulphonic acid with isopropyl alcohol and concentrated sulphuric acid or with isopropyl hydrogen sulphate at a raised temperature, and subsequently splitting off the sulphonic group. Examples are given showing the treatment in each case, and the sulphonic group is split off by distillation in steam, the oil obtained being freed from isopropyl-ether compounds, for example, by treatment with caustic soda, and the product fractionally distilled. From the after-runnings a product is obtained by crystallization from benzene representing a thymolisomer, having a melting-point 114-115 DEG  C.  The thymol itself may be recrystallized from ligroin.
Patent GB-1193009-A (GB)
Title: Improved Electric Plug and Socket Connection
IPC: H01R13/453
Filed: 1968-04-24
Abstract: 1,193,009. Two-part couplings. BÍLKOW G.m.b.H. and SOURIAU ELECTRIC G.m.b.H. 24 April, 1968 [29 April, 1967], No. 19388/68. Heading H2E. A socket housing 201 has attached to it a flange 208 which abuts on one side against a concentric member 209 and on the other side against a resilient deformable ring 210, this arrangement allowing small movements of the socket 2 to compensate for lack of alignment with the plug 1. The member 209 is of polytetrafluoroethylene or a material of similar low friction coefficient, so that the flange can slide on the member 209. The ring 210 may be of chlorobutadiene rubber, and by virtue of its resilience allows a slight adjustment of the socket axis relative to the housing 3. A lug 212, attached to the flange 208, fits into a recess 213 in the deformable ring 210, so preventing rotation. A spring 205 provides a yielding contact for the plug 1, which is inserted and held in position by a rack and pinion arrangement (Fig. 2, not shown), contact being made with the resilient contact springs 204. In the absence of the plug, the spring 205 holds the sealing member 206 in position against the sealing lip 207, so preventing the access of unwanted matter. Also when in this position, a metal ring 211 short circuits the contact springs 204.
Patent GB-960209-A (GB)
Title: Moving bolster presses
IPC: B21D37/14
Filed: 1963-05-15
Abstract: 960,209. Metal working presses. WILKINS & MITCHELL Ltd. May 15, 1963 [June 19, 1962; July 25, 1962], No. 19396/63. Heading B3H. A moving bolster press comprises an air cushioned bed 11 located between four posts 10, a pair of tracks 15 extending from the opposite sides thereof in alignment with tracks 16 on the bed, which comprise a centre portion 17, and a pair of bolsters 20 each having transversely mounted driving wheels 22 for engagement with said tracks. The under face of each bolster is formed with eight wedge engaging surfaces 24, symmetrically arranged two on each side of the longitudinal axis thereof and the bed 11 has horizontal wedge engaging surfaces 29. The bolster is moved into engagement with fixed stops 49, locked in position by a pair of hydraulically operated vertical keys 43, retained transversely by shelves 42 and raised into engagement with stop members 41 by a pair of " E " shaped hydraulically operated wedge members 30, arranged one along each side of the bed 11, the legs of each member having an end wedge portion 33 which engages the wedge surfaces 29, 24. The wedges are operated by a pair of hydraulic cylinder units placed on each side 37 of the bed. These units and the vertical key members are controlled by a pump 45 which comprises a plurality of identical pistons 46 secured to a piston-rod 47, each piston 46 co-operates with identical pumping cylinders arranged in tandem and the rod 47 is actuated by a pneumatic piston 50 attached thereto via a solenoid valve. The hydraulic circuit comprises solenoid oil valves 54, check valves 56 and a common line 57, Fig. 6 (not shown). In the locked condition all the solenoids are de-energized, the pump and key cylinders linked to the common line which is maintained at 2000 P.S.I. and pressure switches 62 closed. To release, the control switch is moved to " out " which stops the pump and energizes the solenoids, when sensing switches (not shown) indicate that the valves have " changed over " the pump restarts and the wedges retract at a common speed. Should any pressure switch operate before all wedges are within the last <SP>1</SP>/ 1  6 th inch of the stroke, that is before limit switches are operated by the wedges, the pump will be stopped and a warning signal given. Sensing switches indicate when the keys and wedges are out and that the bolster can be moved. When the wedges are within the last <SP>1</SP>/ 16 th of an inch of travel and any one of the pressure switches 62 operate, the interconnecting solenoid 58 is de-energized so that all lines are connected to the common line and the wedges and keys positively held out against their stops. Locking is carried out by reversing the above procedure. Alternatively, the pistons may be arranged in parallel and be independently driven, e.g. by an hydraulic pump.
Patent GB-574027-A (GB)
Title: Improvements in and relating to colour cinematography
IPC: G03B33/16
Filed: 1943-11-22
Abstract: 574,027. Colour kinematography. HEWSON, B. T. Nov. 22, 1943, No. 19473. [Class 97 (i)] In a colour kinematograph system employing monochromatic colour separation images which are taken and projected. through correspondingly coloured filters, the filters are formed by a polarizer and analyzer and two pieces of stressed colourless plastic or other bi-refringent material, one of which is fixed and gives one of the colour selections, whilst the other is movable into or out of register with the fixed piece and, when in register, gives in conjunction with it another colour selection. In a two-colour system the moving piece of bi-refringent material may be carried in a frame which is oscillated in synchronism with the film-feed, or on a rotating apertured disc. In the latter case, in order to minimize change of colour due to change of direction of the polarizing axis as the disc revolves, the material is applied in the form of a number, of sectors having their polarizing axes at the same angle to their radially-disposed centre lines. For a threecolour system the frame or disc carries another piece of bi-refringent material, giving, in conjunction with the fixed piece, the third colour. The polarizer may also be carried .on the frame or the revolving disc, and the latter may consist of the existing rotary shutter of the apparatus. The fixed bi-refringent material may consist of two or more parts for use in the system described in Specification 561,425, in which each frame is divided into sections corresponding to a different colour solution. Other bi-refringent materials, or a Kerr cell, may be used instead of stressed plastic. Specifications 518,761 and 518,813 aie referred to in the Provisional Specification.
Patent GB-839166-A (GB)
Title: Cutting device
Inventor: BJOERKLUND GUSTAV ERIK
IPC: A61F15/02
Filed: 1958-06-18
Abstract: 839,166. Plaster cutters. DENTATUS A.B. June 18, 1958, No. 19499/58. Class 81 (2). [Also in Group VIII] A hand cutter for removing a plaster bandage from a patient comprises a tubular cutting tool 4, Figs. 1, 2, mounted in a reciprocable member 2, and an anvil 7 connected by a web 9 and a screw 8 to a bearing bush 6 carried by the cutter casing 1 and adapted to be slid under the bandage 15. The tool is formed with a longitudinal slot the edges 11 of which engage grooves in the web. In use, the tool is repeatedly driven into and withdrawn from the bandage so as to punch overlapping holes therein. The inner end of the cutting edge 5 of the tool is formed with a barb 12 which prevents material removed from the bandage from falling back into the hole made therein. The tool may be of oval or triangular crosssection.
Patent GB-331383-A (GB)
Title: Improvements connected with electric liquid heaters
IPC: F24H1/20
Filed: 1929-06-26
Abstract: 331,383. British Brass Fittings, Ltd., Conly, W. P., and Dunn, W. L. June 26, 1929. Heating by electricity .- Relates to apparatus wherein a heating unit h is located in a chamber e in a liquid container a, the chamber being open at the top and bottom to the container. The communication between the top of the chamber and the contents of the container is by way of an outlet q of small bore at the normal surface level and an opening of greater bore arranged at a lower level and normally closed by a lightly loaded valve n. The valve may comprise a washer mounted on the tube q the tube is engaged by a guide r. Hot water is discharged through the outlet pipe j when the inlet valve d is opened. The chamber e is surrounded by an air jacket f having a vent f<1>. The outlet pipe j may be external to the chamber c or may pass through the air jacket. The pipe q may be separate from the valve n. A baffle mav be fitted around the valve and the upper end of the outlet tube.
Patent GB-153114-A (GB)
Title: Improvements in or relating to wheels and wheel fitments
IPC: B60B3/08
Filed: 1919-08-09
Abstract: 153,114. Killen, E. B. Aug. 9, 1919. Disk wheels.-Relates to disk wheels of the kind described in Specifications 127,379 and 132,084. The wheel comprises a pair of stamped disks 2 each flanged to form a rim-seat 3 and outwardlycurved edge 13 to receive a straight-edged tyre. At the centre, the disks are cupped to receive wood fillings 9, 10, the disks being detachably connected by transverse bolts. The hub portion may be reinforced by side-plates 11. The valve-stem is housed in recesses in the disks leading to one of the lightening-holes 14.
Patent GB-147703-A (GB)
Title: Improvements in the manufacture of vat dyestuffs
IPC: C09B57/00
Filed: 1920-07-08
Abstract: Vat dyes are obtained by heating with alkali sulphides the condensation products from m- or p-nitraniline, or their substitution products, and benzoquinone or its halogen derivatives; preferably ammonium sulphide is employed in aqueous or alcoholic solution and the reaction is effected under pressure. Examples are given of the preparation of dyes from the following parent materials:-quinone m-nitranilide, chloranil m- or p-nitranilide, and the condensation products from chloranil and o-nitro-p-phenetidine, 4-chlor-3-nitraniline, 6-nitro-4-toluidine, or 6-nitro-4-amino-1 : 3-xylene.  The products dye wool from a vat various shades of grey and black.
Patent GB-583157-A (GB)
Title: Improvements in and connected with foundry flasks
IPC: B22C21/00
Filed: 1944-10-12
Abstract: 583,157. Mould weights. WHITTAKER, E. H. Oct. 12, 1944, No. 19696. [Class 83 (i)] A weight, for holding the cope 12 and drag 11 of a flask together, has means for centring it which co-operate with trunnions of said cope. The weight 26 is shaped to fit over the sloping sides 15 of the cope 12, is suspended by a swivel 31 and has two pivoted V-notched forks 28 on horizontal pivots 29 to engage the necks of the trunnions 16. Holes are provided through the weight in line with the gates of the mould. Specification 570,096 is referred to.
Patent GB-587187-A (GB)
Title: Improvements in or relating to blocks for road surface marking
IPC: E01F9/07
Filed: 1944-10-12
Abstract: 587,187. Marking roads. FRANCO-BRITISH ELECTRICAL CO., Ltd., and BRACKENSEY, A. H. Oct. 12, 1944, No. 19710. [Class 3 (ii)] A road-marking block of the type having reflectors is provided with means for automatically cleaning the face of each reflector. In an undercut recess 5 located in front of the reflector 7 is disposed a rubber or like insert 10 having its top projecting above the level of the upper surface of the block 2. Channels 11 through the insert allow of the passage of light to and from the reflector, and each time a vehicle wheel passes over the block the insert is depressed and its inner face wipes the lens. The block may stand on feet 4 which allow grouting material to pass under and surround the buried part of the block. The block may be of any material, and when of cast iron may have white or other metal or rubber inserts to render it more visible. A plurality of blocks may be fitted in a roadmarking frame of stainless steel &c.
Patent GB-652942-A (GB)
Title: Improvements in or relating to aircraft
IPC: B60V1/00
Filed: 1948-07-24
Abstract: 652,942. Aircraft. WARNER D. K. July 24, 1948, No. 19871. [Class 4] An aircraft comprises an aerofoil member 3 having at least one depression 30 formed in its upper surface, which depression enlarges rearwardly into a passage 31 extending downwardly and rearwardly through the member and a propeller 33 for impelling air through the passage, the cross-section of which increases progressively and the underside 48 of the member is rearwardly and upwardly inclined to cause the pressure of the air passing beneath the aerofoil to increase. The aircraft shown is amphibious, having fuselages 1, 2 acting as floats. An upper aerofoil member 40 is provided to increase the air flow over the surface 34 to increase the lift thereof. The member 46 is also of aerofoil section and is arranged to give a diffuser effect and thus produce high lift on surfaces 44, 45. For takeoff and landing, hinged flaps 50, 51 are lowered, by cylinders 54, 59 to the position shown in broken lines and the flaps 70, 74 are lowered and form a seal with the ground or water. The engines 36 then circulate air through a slot 62 and over the upper surface of member 3. Retractable stabilizers 11, 13 are provided, the former mounting elevons 12. The tail wheel 21 is retractable and steerable front wheels (not shown) are provided. Fig. 6 shows an embodiment designed to produce high lift. Flaps 251, 274 are arranged to form a sea] with the ground and slots 262, 316 are formed by flaps 250, 280 for circulation of air through passage 230 and around main aerofoil member 293, the slots opening and closing automatically to stabilize the aircraft. A vent 360 allows air to be sucked from within the plane to control the boundary layer. Specifications 592,756 and 593,032 are referred to.
Patent GB-583287-A (GB)
Title: Improvements relating to the flame-treatment of metals
IPC: C21D1/08
Filed: 1944-10-16
Abstract: 583,287. Surface hardening metal articles. KERSHAW, SEN., J., KERSHAW, JUN., J., and KERSHAW, L. W. Oct. 16, 1944, No. 19911. [Class 72] [Also in Group XXII] In a combined apparatus for cutting and hardening the cut surface of a ferrous metal article, such as a sprocket wheel for military tanks, the water jet is caused to follow behind the cutting jet at a distance such as to obtain the desired chilling of the cut surface, means being provided for ensuring that the water nozzle moves along the same path as the flame nozzle despite irregularities of shape in the profile being cut, so that a substantial quantity of water is directed into the kerf left by the flame. The degree of hardening and the depth of hardened surface may thus be regulated. The combined nozzle which is carried by a burner head 21 guided by a magnetic roller coaxial therewith at the top of the machine engaging a cam with a profile parallel with that of the gap to be cut in the wheel, comprises an arm 3 which is rotatably mounted by a split pin 6 and annular groove 2 on the flame nozzle 1 and carries the water nozzle 9. Nozzles of various sizes may be interchangeably used and are vertically adjustable in the arm. For repetition work the two nozzles are in fixed relation to each other in the arm but for non-repetition work or for experimental work such as when determining the conditions of distance apart, rate of cutting, pressure of cutting oxygen, size and type of cutting nozzle, height, diameter and fluid pressure required, the two nozzles are relatively adjustable. In such form the nozzle 9 which is adjustable in height by nuts 10 may have a scale marked thereon to indicate the height, is mounted in a block 7, laterally adjustable in guides in the arm and fixed in position by a pinching screw 3a, the adjustment being indicated by a scale on the arm. The block 7 has a bearing boss 12 on its lower end on which is held by a nut 14 a roller 13 for engaging a cam 20 on a post 16, the roller being magnetic or being kept by a spring 22 in contact with the cam, which is of slightly different shape from the main cam so that the nozzle 9 follows the path traced by the cutting nozzle. The nozzle 9 is also rotatable in the arm so as not to pull unduly on the flexible water pipe secured to it as the arm rotates about the nozzle 1. The cam 20 is mounted on pivots so that it may be moved out of the path of the work during loading and unloading. Specification 561,586 is referred to.
Patent GB-596760-A (GB)
Title: Improvements in or relating to pipe couplings
IPC: F16L19/10
Filed: 1945-08-02
Abstract: 5 9 6, 7 6 0. Pipe couplings. WURZBURGER, P. D. Aug. 2, 1945, No. 19924. Convention date, Sept. 27, 1944. [Class 99 (i)] A pipe coupling of the type described in the Specifications referred to below consists of a coupling member B having an internal shoulder 6 against which the pipe end T abuts and a flared mouth M, a coupling nut N and a packing ring S adapted, on tightening of the nut N, to be compressed against the flared mouth M so that its forward inner edge 4 digs into the pipe. The maximum thickness t (inches) of the actve part. of the ring (i.e. the part engaging the mouth M) is given by the expression 31t=<3>#(HB/HS). cos 2 alpha where HB is the Brinell hardness number of the material of the member B with the flared mouth, Hs is the Brinell hardness number of the material of the packing ring S, and alpha is the angle of inclination of the surface of the flared mouth M to the axis of the member B, alpha being #30 degrees. The minimum thickness is one quarter the wall thickness of the tube. If this value exceeds t 'then t is the only permissible value for the thickness. The other end of the ring S1 (Fig. 6) or the middle part S2 (Fig. 7) may be thicker. The forward outer end of the ring S is preferably of curved section as at 20 (Fig. 5), the radius of curvature R of the curve being given by where Es and EB are the moduli of elasticity of the ring S and member B respectively, and the centre of curvature being chosen so that the forward end 30 and outer edges of the ring are approximately tangential to the curve and so that a thin inner edge, as with curve 22 (Fig. 5), is avoided. With t and R in accordance with the above relationships, biting of the ring into the surface of the flared mouth M is avoided. The ring may have a relatively soft core with the active zone surface hardened, in which case Hs is taken as one half the measured Brinell hardness number of the surface material. The material of the member B may be softer than that of the ring, but compliance with the above values of t and R ensures that whereas a dent (Fig. 4) is formed in the member B, there is no biting of the ring into the member. Specifications 403,870, 491,761, 492,336, 527,999 and 528,306 are referred to.
Patent GB-256783-A (GB)
Title: Improvements in or relating to imitation fires
IPC: F24C7/00
Filed: 1925-08-07
Abstract: 256,783. Berry, H. H. Aug. 7, 1925. Electric radiators.-An electric imitation fire comprises a resistance heating element e, a reflector f, and a sheet of thin metal c adapted to reflect daylight and artificial light so as to simulate burning fuel, the sheet c or a screen b in front of it being coloured. The screen may be of coloured glass, the edges of the sheet c being bent over the edges of the screen as in Fig. 1. The sheet c may be of aluminium and is preferably crinkled. A plate h protects the sheet from the heating element. Lamps with or without flicker producing devices and additional reflectors may be employed if desired.