baber/WOPTO huggingface dataset:
Patent GB-1108536-A (GB)
Title: Means and method of tufting
IPC: D05C15/20
Filed: 1966-05-06
Abstract: 1,108,536. Tufting needles. CALLAWAY MILLS CO. 6 May, 1966 [2 Aug., 1965], No. 20066/66. Heading D1G.- [Also in Division B3] In a hollow tufting needle from which yarn is discharged approximately axially of the needle shank, the .discharge end of the shank is tapered to displace a work-penetrating tip towards the axis of the shank so that the taper provides a camming surface to displace yarns of the backing material when penetrated by the needle. The discharge end of the shank 22 of a hollow tufting needle is initially bevelled at 30 degrees to form a point 35. Said end is then introduced into a bore 41 of .a swaging block 40, the bore having a diameter of 0.001 inch greater than that of the shank. Said end is then forced into a conical bore 42, co-axial with bore 41 and subtending an angle of 12 degrees. until the end 36 of mouth 34 opposite point 35 reaches the inner end of bore 41, whereby point 35 is displaced towards the axis of shank 22. The edges of mouth 34 are then rounded off and the area in the vicinity of mouth 34 is hardened.
Patent GB-1293498-A (GB)
Title: Suspension emulsion interpolymers
IPC: C08F2/22
Filed: 1971-04-19
Abstract: 1293498 Multi-layer polymer particles STAUFFER CHEMICAL CO 19 April 1971 [16 Feb 1970] 20113/71 Headings C3G and C3P Multi-layer polymer particles are produced by (1) emulsion polymerizing a monomer yielding a polymer having a glass transition temperature above 25 C. to form a particle core, (2) emulsion polymerizing thereon monomer(s) capable of forming a cross-linked rubber having a glass transition temperature below 25 C. and (3) suspension polymerizing a monomer in the presence of the latex from step (2) to form a polymer surrounding and/or dispersed in the rubber polymer layer. Preferred proportions are 0À5-48À5% core, 0À5-50% rubber and 50-99% suspension polymer. In examples the core is formed from vinyl chloride, the rubber from butyl acrylate and butylene-1,3-dimethacrylate optionally with methacrylic acid, in two stages and the suspension polymer from vinyl chloride or styrene and acrylonitrile. The products are used as impact modifiers for P.V.C., styrene-acrylonitrile copolymer or polymethyl methacrylate.
Patent GB-1263023-A (GB)
Title: Joints between plate-form and/or sheet-form members and/or parts of members
IPC: F16B9/02
Filed: 1970-04-27
Abstract: 1,263,023. Bolting. ECE-ELEKTROSTATIK UND CHEMISCHE ENTWICKLUNGS G.m.b.H. 27 April, 1970 [26 April, 1969], No. 20199/70. Heading F2H. Two plates 1, 2 are joined together by a pin 5 and bolt 8, the pin being passed through a hole 3 in one plate 2 and the bolt 8 passing through a hole 4 in the other plate 1 and being screwed through a threaded aperture 7 in the shank of the pin. The head of the pin and that of the bolt abut one side of their respective plates after they have been passed through the holes so that tightening of the bolt secures the plates together. A circumferential groove may be provided in the shank of the pin 5 into which burred material of the plate 2 formed during drilling of the hole 3 is forced so as to lock the pin 5 in the plate.
Patent GB-702822-A (GB)
Title: Improvements in arc-extinguishing devices for electric switches, contactors or circuit breakers
IPC: H01H9/36
Filed: 1949-08-03
Abstract: 702,822. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd., and MARTIN, E. H. B. July 31, 1950 [Aug. 3, 1949], No. 20209/49. Class 38(5) An arc chute is shaped as a divergent nozzle and contains vanes of high magnetic permeability, e.g. steel, the lower edges of the vanes D having V-shaped notches formed therein and the vanes being recessed at E, F, into the insulating side walls of the chute. Further vanes of non-magnetic material may be arranged near the exit of the chute. Specifications 530,199, 593,575 and 645,087 are referred to.
Patent GB-136226-A (GB)
Title: Improvements in Mounting and Driving Aircraft Propellers.
IPC: B64D27/00
Filed: 1918-12-06
Abstract: 136,226. Wolseley Motors, Ltd., and McCormack, A. J. Dec. 6. 1918. Propelling.-Relates to reduction gearing for driving aircraft propellers in which spur-wheels mounted on the engine shaft and propeller hub respectively are engaged by one or more pairs of pinions carried by one or more shafts mounted in a fixed casing, and consists in mounting the propeller hub to rotate on the engine shaft, and in arranging the gear so that it may be applied to an ordinary engine shaft and casing without alteration of the said shaft or casing. The spur-wheel E is formed on a sleeve B<1> keyed to the engine shaft B and secured therto by a tapered ring h and nut L, and engages pinions F on shafts G mounted on ball and roller bearings g, g<1> in a fixed casing D. The shafts C also carry pinions H engaging a spurwheel on a sleeve j, which is mounted on ball bearings C<2> on the sleeve B<1> and is keyed to the propeller hub C. The propeller hub is mounted on the sleeve B<1> by means of a roller bearing c<1> and a thrust bearing a, the thrust being transmitted by the bearing a to the engine shaft and thence to the engine casing A by the usual thrust bearing o. The various ball races, thrust-rings, and distance-pieces are secured on the sleeve B<1> by a nut f. The casing D may be connected to the engine casing or other fixed part of the aircraft by torque-rods.
Patent GB-269838-A (GB)
Title: Improvements relating to signalling devices for cameras
IPC: G03B17/42
Filed: 1926-08-19
Abstract: 269,838. Cage, F. W., and Tondreau, A. W. April 20, 1926, [Convention date]. Magazine hand cameras with connected action between shutter and changing-mechanism. - In order to indicate whether the portion of a rollfilm which is in the focal plane has been exposed or not, an indicator element displaceable by resilient means from one position into another is mounted on the camera, and is caused by a driving-element, also displaceable by resilient means, to occupy one position on actuating the shutter, and to occupy the other position on turning the film winding-handle. In the form shown. a plate 46, Fig. 4, carrying the words " exposed " and " unexposed " is slidable horizontally in a frame 24, the cover 48 of which is slotted at 47 to exhibit either word according to the position of the plate. The frame 24 is mounted adjacent to the finder 27, Fig. 3, on the lens front 26 of the camera, and in it is journaled a square shaft 23 on which is slidably mounted a cam unit comprising three continuous cams 29, 30, 31 shaped and disposed with respect to the shaft as shown in Fig. 4. On depressing the shutter trigger 43 to make an exposure an eccentric 41 in the shutter casing rocks a lever 38, which in turn rocks a lever 33 connected to the cam unit, so that this is displaced to the left against the action of a spring 32 into the position shown in Fig. 3. An arm 53, depending from the plate 46, which before exposure rested against the cam 29, is caused by the movement of the cam unit to slip off the cams 29, 30 in turn, and come to rest on the cam 31 in the position shown in Fig. 4; during this movement a spring 50 moves the plate 46 rearwards to exhibit the word " exposed " through the slot 47. On actuating the film winding-key, the shaft 23 is rotated in a clockwise direction, Fig. 4, by a flexible shaft 19 connected by bevel gearing to the winding-key. The cams are so shaped and disposed that. as the shaft 23 rotates, the cam unit is displaced to the right in two movements by the spring 32 as the arm 53 permits the cams 30, 29 to slip in turn from its side to its rear edge, and the rotation of the cams displaces the arm 53 against the action of the spring 50 so that the plate 46 is moved forwards and exhibits the word " unexposed " at the slot 47. Continued motion of the shaft 23 to complete the winding of the film does not affect the position of the plate 46, since the cam 29 on which the arm 53 finally rests is circular and centrally mounted. The parts are then in position for a further exposure after the shutter has been reset.
Patent GB-838721-A (GB)
Title: Visual tuning indication arrangement
Inventor: ULBERT KAREL
IPC: H01J31/14
Filed: 1957-06-28
Abstract: 838,721. Cathode-ray tubes. TESLA, NARODNI PODNIK. June 28, 1957, No. 20505/57. Class 39(1). [Also in Group XL(c)] In a tuning indicator valve, the flourescent screen is of cylindrical shape and the envelope is surrounded by a conical reflecting surface. During operation of the valve there appear on the screen luminescent strips which are of variable width in accordance with the tuning degree of the receiver. These are observed in the conical mirror 7, Fig. 3. Thus a comparatively large indicating field may be obtained with a miniature valve. The mirror 7 may be integral with the valve holder. The fluorescent screen preferably comprises a layer 3, Fig. 1, on the envelope 1. Concentrically with the fluorescent layer 3 and adjacent thereto is arranged an anode 2, a cathode system 4 being provided in the axis of the envelope. The control electrodes 6 are such that as the potential thereon is increased the widths of two luminescent strips increase.
Patent GB-203475-A (GB)
Title: Improvements in oscillating fans
IPC: F04D25/10
Filed: 1922-07-27
Abstract: 203,475. Veritys, Ltd., and Rogers, D. E. July 27, 1922. Mounting.-A fan is arranged for oscillation about either of two independent axes substantially at right-angles by means of one oscillating gear. The bifurcated frame e<2>, e<3> is supported on a column f and is free to turn round the lug e<4>. The fan motor is carried bv trunnions at the ends of the frame e<2>, e' and can oscillate within the frame. At the rear of the motor a crank plate j is driven through worm gear i, i<2> and toothed gear i<4>, i<5>, and the crank pin j<2> on the plate is connected by the telescopic arm l to a fixed peg ni on a plate attached to the lug e<4>. The friction between the two parts of the arm l is insufficient to prevent adjustment of the arm as the plate i rotates, but is sufficient to force the motor casing to oscillate by reason of the connection to the peg m. A lever g works on a pivot g<2> on the frame e<3> and carries at one end a clamping screw h. By adjustment of the screw h, it can be. made to grip the motor casing and oscillation then occurs round the lug e<4>; or, the screw can be operated to cause the lower end of the lever g to grip the collar f<2> on the pillar f, and oscillation then occurs about the trunnions d. The worm wheel i<2> is coupled to its shaft i' by a, member o which can be inserted or removed by hand.
Patent GB-322801-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G02B27/12
Filed: 1928-07-16
Abstract: 322,801. Alldridge, R. S. July 16, 1928. Lens mounts.-To reduce the parallax effect produced when two or more lens systems are used simultaneously, the distance apart of the axes of the lens systems is made to vary with the focussing. A casing a has a tapered bore and contains two half-sleeves l also tapered forwards and containing circular lenses b each with a segment cut away in contact with a septum consisting of leaves d<2>. A focusing sleeve e, screwing in the rear of the casing and moved by a lever f carries a ring with chamfered edge i pressing against a similar edge on the half-sleeve so that these move towards one another when moved forward. A ring similarly chamfered and mounted by springs s against a ring q and a locking ring r are mounted in the front of the tube which carries also a ring fcr holding colour filters.
Patent GB-1046105-A (GB)
Title: Separation of ethylbenzene from dehydrogenation products thereof
IPC: C07C15/073
Filed: 1963-05-23
Abstract: In the dehydrogenation of ethylbenzene to styrene, ethylbenzene is separated from the product stream also containing steam by compressing the mixture so that the minimum condensation temperature of the steam is 210-240 DEG  F., using the compressed mixture to heat the reboiler of an ethylbenzene distillation column by condensing steam and distilling the mixture in the column to obtain ethylbenzene overhead.  The compression is preferably effected by a steam turbine driven by highpressure steam which is then superheated and mixed with feed ethylbenzene for the dehydrogenation. The reaction effluent is compressed by at least 2 p.s.i.a. to 20-32 p.s.i.a. to provide a steam condensation temperature of at least 5 DEG  F., preferably 10 DEG  F., above the column bottoms temperature.  Part of the compressed mixture is also used to heat the reboiler of a light ends column and condensates and vapours from the reboilers are condensed and distilled. The ethylbenzene column having 60-80 plates is operated at an overhead pressure of not below 10 mm. Hg, e.g. 25 mm.
Patent GB-597912-A (GB)
Title: Improvements in or relating to radio-location equipment
IPC: G01S7/34
Filed: 1945-08-10
Abstract: 597,912. Automatic volume control. CARTER, R. H. A., and BRADFIELD, G. Aug. 10, 1945, No. 20651. [Class 40 (iv)] [Also in Group XL] A potentiometer network which attenuates signals of large amplitude relative to those of small amplitude, comprises one or more diodes whose impedance varies with signal strength so that an approximately logarithmic response is obtained. The output from the second detector V1 of a radar receiver is applied to the potentiometer network R2, V2, wherein the impedance of the diode V2 decreases as the signal applied to it increases, the circuit valves being so chosen that the attenuation varies approximately logarithmically. An additional network R3, V3 may be added and is so arranged that when the signals pass beyond the logarithmic range of the network R2, V2 they come into the logarithmic range of R3, V3. The range may be further extended by the addition of more similar networks.
Patent GB-995683-A (GB)
Title: Improvements in packings
Inventor: THOMPSON CHARLES HENRY
IPC: F16J15/26
Filed: 1963-05-24
Abstract: 995,683. Stuffing-box packing. UNITED STATES METALLIC - PACKING CO. Ltd. May 25, 1964 [May 24, 1963], No. 20758/63. Heading F2B. Metallic packing for a reciprocable rod, e.g. a compressor piston rod, comprises a sealing ring or rings 18 and at least one wiper ring 16, 17 disposed at each side of the ring or rings 18 and axially spaced therefrom. The packing is housed in a casing 13 formed in halves secured together by bolts 14 and secured to the compressor casing 12 by bolts 15. The sealing and wiper rings are each formed in three segments held in position by garter springs 21 and 22 and arranged to break joints with abutting rings. The wiper rings have slots 20 therein and fluid removed by the rings 16 is discharged through apertures 23 and collected in a receptacle (not shown) whilst oil removed by the rings 17 is returned to the crankcase through grooves 24 in the lower end 25 of the casing 13.
Patent GB-1430632-A (GB)
Title: Grinding machines
IPC: B24B27/00
Filed: 1973-05-02
Abstract: 1430632 Grinding cams SCHIESS AG 2 May 1973 [3 May 1972] 20829/73 Heading B3D A copy-grinding machine comprises a workpiece headstock 3 mounted on a table 2 and having a spindle for rotating a workpiece 9 to be ground, a tailstock 7 mounted on the table and axially adjustable relative to the headstock, the table being displaceable on a bed 1, two template discs 5, 6 exchangeably secured one behind the other on the spindle, and two copying carriages 13, 14 which are arranged one on each side of the axis of the spindle and displaceable horizontally on the machine bed 1 at right angles to the axis. A respective grinding head slide 15, 17 is supported on each carriage 13, 14 and has a grinding head 19, 21 supporting a grinding wheel 20, 22, and a respective follower slide 16, 18 is supported on each carriage 13, 14 and has a follower 27, 28 for abutment with a respective one of the template discs 5, 6. The grinding head slides and follower slides are axially adjustable and transversely adjustable on the carriages independently of each other. The table 2 is movable in the direction of the arrow E by a hydromechanical drive to position the spindle, which is driven by an hydraulic motor, for loading and unloading of a workpiece and for dressing of the grinding wheels by a trueing device 12. The workpiece 9 is carried between centres in the headstock and tailstock and a carrier 4 clamps the headstock spindle to the workpiece. The carriages 13, 14 are mounted for movement at right angles to the workpiece axis on the bed 1, each carriage slidably supporting a respective copying slide 16, 18 and a respective grinding head slide 15, 17. The copying slides each have a roller block 25, 26 having a follower roller 27, 28 and the slides are adjustable in the direction of the arrows G by spindles 30 and in the direction of arrows F by hand wheels 32. The grinding heads 19, 21 carry grinding wheels 20, 22 and are driven by belts 23 from motors 24. The heads are mounted on the slides 15, 17. which are adjustable in the direction of the arrows G by spindles 34 and in the direction of the arrows F by hand wheels 31. The slides 15, 17 are movable in the direction of arrows K to compensate for wear and trueing of the grinding wheels.
Patent GB-1481915-A (GB)
Title: Pile driving apparatus
IPC: E02D7/06
Filed: 1975-05-16
Abstract: 1481915 Pile drivers VAN KOOTEN BV 16 May 1975 [20 May 1974] 20902/75 Heading B3H [Also in Division E1] A pile driver 7 has a guide frame 9 in which hammer 8 is guided on to the pile 1 to be driven. The guide frame has a socket 22 through which the pile slides as it is driven and at least one guide stay 23 on which the hammer is slidable, the guide stay or stays being detachably secured to the socket. The hammer shown in Fig. 4 is a Diesel one in which the cylinder 13 bears through the rubber cushion 18 on collar 19 of the rammer 12. Fig. 8 shows a steam hammer comprising a heavy cylinder 13, a piston 14 secured to a guide member 25 and a steam inlet 36 controlled by a steam slide 35. The driving cap guide 10 is secured by setting rods 37 to the guide member 25.
Patent GB-1261949-A (GB)
Title: PRODUCTION OF beta-AMINOCARBOXYLIC ACIDS
IPC: C08G69/08
Filed: 1969-04-24
Abstract: 1,261,949. #-Aminocarboxylic acids. BADISCHE ANILIN & SODA FABRIK A.G. 24 April, 1969 [25 April, 1968], No. 20922/69. Heading C2C.  #-Aminocarboxylic acids are produced by reacting an α,#-unsaturated carboxylic acid nitrile with formic acid at elevated temperature and superatmospheric pressure followed by treatment of the resultant polyamide with an aqueous mineral acid or caustic alkali solution. Starting materials mentioned include acrylonitrile and substitution derivatives thereof bearing C 1-6  alkyl radicals or cyclohexyl benzyl or phenyl radicals in the α- or #-positions. The examples describe the preparation of #-alanine and α-methyl #-alanine hydrochloride.
Patent GB-661438-A (GB)
Title: Cork puller
IPC: B67B7/06
Filed: 1949-08-11
Abstract: 661,438. Cork extractor. IRVING, J. H. Aug 11. 1949, No. 20931/49. Class 125(ii) The stem 12 of a device 10 for pulling corks from bottles is provided with a spring prong 18 which lies within a slot 19 in the stem 12 while the latter is inserted down the side of a cork 22 which is to be removed from a bottle 23 and which having passed below'the cork 22 springs o u t from the slot 19 to engage the bottom of the cork as the device 10 is raised to withdraw the cork from the bottle. The stem which is thin and resilient may be curved or flat in section.
Patent GB-718027-A (GB)
Title: Improvements in or relating to the purification of oxytetracycline
IPC: C07C233/00
Filed: 1951-09-05
Abstract: A process of recovering oxytetracycline, also known as terramycin, from its fermentation broth comprises adding to the broth a sequestering agent and extracting the oxytetracycline from the broth with a solvent, especially a substantially water-immiscible solvent such as butanols, amyl alcohols, 2-phenoxyethanol, cyclohexanol and mixtures thereof.  It is preferred to use a filtered broth containing at least 800 mcg/ml. oxytetracycline and adjusted to a pH of 8.5 to 11.5, especially 10.0.  Ratio of solvent to broth is 0.1-0.5 to 1. 1.6 to 16 lbs. sequestering agent are used for each 100 gallons of broth.  The solvent extract is acidified with mineral or organic acids and concentrated in vacuo.  Amorphous oxytetracycline forms at pH 5.0 to 7.5, and crystalline oxytetracycline at pH 3.0 to 5.0. Crystalline oxytetracycline hydrochloride is produced by adding hydrochloric acid to a solution in methanol of the above amorphous or crystalline oxytetracycline.  The sequestering agent is any substance having the ability to make the various metallic ions present in the fermentation broth non-reactive by binding them in a soluble complex. Specified are weakly ionized polybasic acid compounds such as sodium tetraphosphate; hydroxylated organic carboxylic acids such as citric acid and gluconic acid; and amino acids such as ethylenediamine tetra-acetic acid and ethylene triacetic acid and mixtures thereof. Specifications 684,417 and 718,020 are referred to.
Patent GB-460227-A (GB)
Title: Improvements in cooling apparatus employing solid gas-emanating refrigerants
IPC: F25D3/12
Filed: 1935-07-23
Abstract: 460,227. Refrigerating. STEWART, W. M. July 23, 1935, No. 20969. [Class 29] A cooling unit for use, e.g. on rail or road vehicles comprises a heat-insulated solid carbon dioxide &c. container having ports 37, 56 connected by a heat-conducting vapour circulation duct 34, 52, the vapour circulation being controlled by a preferably manuallycontrolled valve 46 and a valve 62 controlled by a bimetallic strip 63 subject to the temperature of the vapour. The position of the valve 62 may be adjusted by a cam 69 eccentrically mounted on a shaft 66 operable from outside the unit. A part of the circulating vapour may pass to the atmosphere through a port 59. The refrigerant blocks are prevented from fouling the ports 37, 56 by stops provided on the door and the back of the container. The vapour escaping from the container may be circulated through the insulation of the walls of the chamber in which the unit is placed. In a modification, a motordriven air-circulation fan 126, Fig. 4, having an inlet 127 and an outlet 128 may be secured to the unit.
Patent GB-768548-A (GB)
Title: Improved method of forming metallic patterns
Inventor: CASSMAN HARRY
IPC: G03F1/00
Filed: 1953-07-29
Abstract: A method of forming a metallic pattern on a surface of a support comprises depositing on said surface through a stencil corresponding to said pattern a layer of a first metal, e.g. Sb, Bi, Ag or Al, removing the stencil, then depositing a layer of a second metal, e.g. Cr or Pt, and treating said layers with a substance which reacts with the first metal to reduce its adhesion to the support without reacting with the second metal or reducing its adhesion to the support thereby enabling the first metal and the portions of the second metal covering it to be removed, and after removal, to leave on the surface the second metal in the form of a pattern corresponding with the stencil.  The reactive substance used may be dilute HCl in the case of Sb, Bi or Ag and dilute NaOH in the case of Al.  The formation of a target electrode for a television pick-up tube is described where the support is of glass, quartz or mica, the stencil is a silver mesh, the metals are applied by vapour deposition in vacuo and the second metal (Cr) is evaporated on to a surface heated to 200-300 DEG C.  The manufacture of optical gratings employed in the photographic art is also referred to.