baber/WOPTO huggingface dataset:
Patent GB-492361-A (GB)
Title: Improvements in or relating to the manufacture of organic esters
IPC: C07C51/10
Filed: 1936-12-14
Abstract: Carboxylic esters are obtained by interaction of an ether and not appreciably more than a molecularly equivalent quantity of carbon monoxide in the presence of a boron-halogen-containing compound or other halides including those of Ti, Sb, Al, Be, Zr, Hf, Th, Cb, S, Si, P, Ta, Cr, V, and Mo.  Carbon monoxide may be passed into a dialkyl ether-boron trifluoride addition compound, a carboxylic ester-boron fluoride addition compound being formed. The ester may be freed by reaction with dialkyl ether and distillation, the original compound being reformed.  Metal halides act similarly to replace the ester in the addition compound. Dihydroxyfluoboric acid, hydrofluoboric acid, and other acids made by reacting hydrofluoric acid with boric acid and borates may be used in place of or in addition to boron fluoride.  Boron fluoride-water addition compounds are also suitable.  Promoters such as metals or metal oxides may be present.  Temperatures up to about 350, e.g. 150-240 DEG  C., and pressures up to 1000 atm. or more, e.g. 350-750 atm., may be used. Carbon monoxide from commercial sources or mixed with inert gases may be employed although compounds such as sulphur derivatives and carbonyls are preferably removed.  Ethers specified are methyl, ethyl, propyl, butyl, diallyl, b - and g -chlorethers, cyclohexyl, methyl-ethyl, ethyl-propyl, methyl-propyl, methyl-allyl, and anisol. In examples (1) dimethyl ether and boron fluoride are reacted to form an addition compound and carbon monoxide added until pressure is 900 atm.  Temperature is kept at 150-190 DEG  C. for 2 hrs.  The product is distilled while dimethyl ether is added to give methyl acetate; (2) the same addition compound + 10 per cent dihydroxyfluoboric acid is used, CO pressure being 800 atm.; (3) a silver lined autoclave charged with (C2H5)2O.BF3 and BF3.H2O under an initial CO pressure of 575 atm. is heated to 170 DEG  C. pressure being increased to 800 atm.  The product is fractionated while (C2H5)2O is added.
Patent GB-467188-A (GB)
Title: Improvements in or relating to television or like systems
IPC: H04N5/06
Filed: 1935-12-11
Abstract: 467,188. Television transmitters. BAIRD TELEVISION, Ltd., and LANCE, T. M. C. Dec. 11, 1935, No. 34372. [Class 40 (iii)] In Specification 431,339, a system of intercalated scanning is described in which a cathode ray beam is deflected at varying periodicity. According to the present invention, synchronizing signals for such a scanning system are produced by mixing two oscillations of different frequency and applying them to a device which produces an impulse when its input exceeds a predetermined value. In an example for a two-intercalated scan, a 50-cycle sinusoidal potential A, Fig. 2, is applied to R1, Fig. 1, and a 25-cycle saw-tooth potential B, Fig. 2 is applied to R2, Fig. 1. The mixture C, Fig. 2, appears across R3, Fig. 1, and is applied to G, which produces an impulse when its input exceeds the level V1, Fig. 2, so that impulses D are produced. The saw-tooth potential B may be distorted so as to rise more sharply just before the return stroke. The sinusoidal oscillation may control the saw-tooth generator. Specification 431,458 also is referred to.
Patent GB-1407730-A (GB)
Title: Golf ball
IPC: A63B37/00
Filed: 1973-07-19
Abstract: 1407730 Golf ball UNIROYAL INC 19 July 1973 [28 July 1972] 34376/73 Heading A6D A golf ball has a plurality of depressions each having a diameter of 0.150+0.015 inch distributed over its surface in a pattern which conforms to a regular icosahedron inscribed on the surface. As shown the pattern is made up to twenty spherical triangles indicated by broken lines 14, 17. All or substantially all of the depressions can be bowl-shaped having a depth of .015 + .003 inch but the depressions at the vertices of the triangles can be of pentagonal (Fig 4, not shown). There can be a total of 252 depressions 12 of which can be of pentagonal form. The depressions may occupy approximately 50% of the surface of the ball and the arrangement of the depressions is such that all circumferential pathways of width .005 inch or greater intersect at least one of the depressions. The ball may comprise a fluid, liquid or solid core the later being of metal or of synthetic plastics or of elastomeric material, the core being surrounded by a winding of elastomeric yarns or filaments or by an elastomeric composition together with an outer cover in which the depressions are formed in a moulding operation. The ball may also be of solid form. Examples of suitable materials are given. U.S. Patent Specifications 3264272, 3313545; 3421766 and 3238156 are referred to.
Patent GB-498352-A (GB)
Title: Improvements in and relating to fittings for window sashes and the like
IPC: E05C17/22
Filed: 1937-12-13
Abstract: 498,352. Stays for hinged articles; hinges. BROWN, J. D., and MORRISON, R. Dec. 13, 1937, No. 34405. [Classes 65 (i) and 65 (ii)] [Also in Group X] A sliding window, door, or the like 1, hinged to the framing by a bar 5, is fitted with aligned upper and lower pins 7 arranged to slide in grooves 8 formed between angle-bars 8<1> and step 91 on the frame 9. The window may be fitted with a stay-rod 13 traversing a pivoted or slotted eye 14 on the frame and locked by a set-screw 16. Preferably, the latter is formed with a tapered end to engage a corresponding recess in the rod 13 so as to effect a tight closure of the window-sash against the frame.
Patent GB-1534430-A (GB)
Title: Photographic flash devices
IPC: G03B15/05
Filed: 1976-08-18
Abstract: 1534430 Electronic flash unit WEST ELECTRIC CO Ltd 18 Aug 1976 [19 Aug 1975] 34445/76 Headings G2A and G2X An electronic flash unit comprises two housing parts A and B, a flash tube 4 mounted in part A and a photo-electric control circuit for determining flash duration; part A being rotatable relative to part B to provide bounced flash and such rotation causing closure of switch contacts 57, 58 (=SW in Fig. 3) to vary a parameter in the control circuit to take account of this. As shown, the control circuit comprises a capacitor 13 which integrates the output of a phototransistor 12 and via a switching circuit 15 turns on a switching element 10 to discharge a quench capacitor 9. When part A is rotated to provide bounced flash, switch SW is closed to connect in an additional capacitor 14 to lengthen the flash duration. In Fig. 4 (not shown), the voltage across an integrating capacitor (13) is compared with a reference voltage provided by a voltage divider (17, 18) in order to determine flash duration. Closure of  switch SW connects an additional resistance (18) to the divider (17, 18). Part B of the unit has a battery compartment 61, a window 30 behind which is located the phototransistor, and a cylindrical part which houses a storage capacitor and forms part of the hinge for part A. Also mounted in part B are a click-stop arrangement 53, 54 and the switch contacts 57, 58. When part A is rotated to the position shown, a recess C in part A accommodates a pin 59 and thereby allows contact 57 to move into engagement with contact 58. A scale (55) Fig. 7 (not shown) indicates the angle of rotation of part A.
Patent GB-308235-A (GB)
Title: Improvements in coil clutches
IPC: F16D13/08
Filed: 1927-12-20
Abstract: 308,235. Coil Clutch Co., Ltd., and Douglas, G. G. Dec. 20, 1927. Catches, friction.-The tail 9 of a contracting clutch coil 6, adapted to grip a driven sleeve 4, is positively moved for both engagement and disengagement by a cam path 15 formed between a tapered pin 13 and an inclined finger 14 carried on a slidable control disc 11. A peg 17, projecting from a housing 12 secured to the driving- drum 3, coacts with a like cam path 16 between the pin 13 and a second inclined finger 14', so that the parts 9, 17 are drawn together to release the clutch and separated to engage it by movement of the disc 11. The head 7 of the coil 6 is retained by a screw 8 in a notch in the drum 3, which has ribs 5 coacting with welded or other bosses 21 on the'coil to ensure uniform expansion thereof. The flanges 18, 19 of the parts 3, 12 have differentially-spaced bolt-holes, in order to provide adjustable initial torsion in the coil.
Patent GB-1285352-A (GB)
Title: Process for preparing food and drink
IPC: A23L27/30
Filed: 1969-07-08
Abstract: 1285352 Sweetening food HAYASHIBARA CO 8 July 1969 [8 July 1968] 34473/69 Heading A2B [Also in Divisions C2 and C6] A process for making a sweetened food or beverage comprises incorporating in the food or beverage maltose prepared by adding α-1, 6-glucosidase and #-amylase to a liquefied starch. The starch may be waxy corn starch or potato starch liquefied using an enzyme. In the Examples the maltose is used in the preparation of orange juice, powdered sweeteners, powdered milk suitable, e.g. for infants, canned fish, bottled marron glacÚ, white bean jam and jelly, artificial sake, ice cream, hard candy, canned oranges, boiled fish paste, red and soya bean preparations, minced cuttlefish, pectin and agar jellies, creams, confectionery centres, chocolate and chewing gum.
Patent GB-1114874-A (GB)
Title: High temperature thermocouples
Inventor: MEADOR JAY D
IPC: G01K7/04
Filed: 1967-05-12
Abstract: 1,114,874. Thermocouples. GENERAL MOTORS CORPORATION. 12 May, 1967, No. 34504/65. Heading H1K. A high temperature thermocouple comprises a junction between a pair of different noble metal conductors the ends of which are connected to compensating leads. As shown, Fig. 1, a thermocouple assembly for measuring the temperature of the gas inlet to a gas turbine engine comprises an element 16 of 50% Pt, 40% Pd, 10% Au forming a junction 20 with an element 18 of 65% Au, 35% Pd. The ends of elements 16 and 18 are butt welded at 22 and 28 to a chromel conductor 26 and a nickeliron-manganese conductor 24 respectively. Two such thermocouples are contained in a stainless steel sleeve 15 from which they are insulated by a magnesium oxide mass 13. The noble metal thermocouple produces the same EMF as a thermocouple formed from the conductors 24, 26 at 1300‹ F., and in order to compensate for the voltages generated at butt joints 22, 28 these joints are maintained at 1300‹ F. by placing the thermocouple assembly at an appropriate distance into the gas stream, in which there is a transverse temperature gradient. The insulation (23) surrounding the butt joints (22, 28) may comprise beryllium oxide, Fig. 3 (not shown), and the butt joints may be staggered, Fig. 4 (not shown) to ensure that they are at the same temperature.
Patent GB-420941-A (GB)
Title: Tool or apparatus for setting or sharpening razor blades and razors of all kinds, and similar edged instruments and tools
IPC: B24D15/08
Filed: 1934-04-26
Abstract: 420,941. Sharpening razors &c. CANHAM, F., Cromwell House, High Holborn, London. April 26, 1934, No. 34536. [Class 60] A sharpener for razors &c. comprises a holder of V-shape formed by doubling a strip a of metal, or by uniting two strips at one end by brazing or by a screw and nut &c. One free end of the strip has therein a hole or indentation b in which is a steel ball c, and in the other free end is a hole or indentation d in which is a steel roller e, pressed against the ball to form a recess through which the edge of the razor &c. is drawn. In a modification, two rollers are employed in holes or recesses, one in each free end of the holder and made at an inclination to each other.
Patent GB-1420468-A (GB)
Title: Oxidising agent method and apparatus for cutting metal
IPC: C08F8/04
Filed: 1973-07-20
Abstract: 1420468 Peroxides of acrylic polymers INTEROX 20 July 1973 [21 July 1972 14 June 1973] 34616/73 Heading C3P [Also in Division C5] Polymeric peroxides are obtained by oxidation of a poly(α-hydroxy acrylic or alkylacrylic acid) or salt thereof, or of a lactone thereof, or of a poly(α-chloro acrylic or alkylacrylic acid) or a salt thereof. Oxidation may be effected by hydrogen peroxide, which may be present as such or may be produced in situ from a previously hydrogenated and oxidized mixture of secondary and tertiary amyl tetrahydro anthraquinones. Reaction may be effected in aqueous medium or in a suspension in an organic non-solvent, e.g. benzene. In examples, the starting material is poly(α- chloroacrylic acid), the sodium salt thereof, a lactone derived by hydrolysis thereof, or poly- (α-hydroxyacrylic acid) or the sodium salt thereof. Use.-Oxidizing and bleaching agents, especially in detergent compositions.
Patent GB-605385-A (GB)
Title: Improvements in sewing machine units
IPC: D05B75/00
Filed: 1945-12-21
Abstract: 605.385. Sewing - machines. UNION SPECIAL MACHINE CO. Dec. 21, 1945, No. 34661. Convention date, June 29. [Class 112] 0 Stands. - A power - driven sewing- machine unit is carried on a standard with a bracket supporting the machine, the motor being arranged either on top of the standard or on the side opposite to the machine. In the arrangement shown, a tubular standard 23 has an adjustable bracket 26 provided on one side with an arm 27 to carry the sewing-machine 31 and on the other side with a housing 28 to the underside of the top of which is adjustably fixed a depending bracket carrying the driving-means, the machine being driven therefrom by a belt 40. An electric cable is led to the housing through a pillar 60 thereon. The standard 23 is clamped in a split sleeve 21 forming part of a base 10 which carries control treadles 13, 14; adjustable work-tables 94, 97 may be provided on a pillar 90 secured to the base 10 and on the standard 23 respectively. The treadle 14 is hinged to the base 10 at one edge and is attached to a chain 70 by which a lever 73 lifting the presser-foot of the machine may be actuated. The treadle 13 is fixed at its centre-line to a shaft which extends through the sleeve 21 and carries an arm (not shown) connected by a rod to the usual clutch of the driving mechanism. In a modification, the connections from the treadles to the mechanisms they control are arranged inside the standard 23. To reduce noise, the standard is lined or filled with sound-absorbing material. Lubricating.-A double-acting oil-pump, supplying some parts of the machine from one end of its cylinder and some from the other, is connected through levers to a chain 72 which is attached to the presserlifting chain 70 (as shown) or to the clutch-actuating rod, so that the pump is actuated every time the appropriate treadle is depressed or released. Thread spool holders.-The housing 28 carriers a pillar 60 with C-shaped frames 62 supporting spindles for thread spools 64, the upper members of the frames having thread-guiding apertures. Cooling and removing fluff by air currents.-A rotary blower 53 connected with the driving-means in the housing 28 supplies air through a pipe 55 to the neighbourhood of the needle.
Patent GB-726887-A (GB)
Title: Improvements in and relating to thread-advancing reels
IPC: D01D10/04
Filed: 1953-12-14
Abstract: 726,887. Thread-advancing reels. COURTAULDS, Ltd. Dec. 14, 1953 [Dec. 15, 1952), No. 34712/53. Class 120 (2). A thread-advancing reel 10 comprises two members 11, 12 mounted for rotation about relatively offset and angularly displaced axes, the one member, 11, being positively driven, as from a gear 17 on a shaft 16, and the other member 12, which is eccentrically and freely mounted, is driven therefrom through a onepiece flexible coupling member 33 secured, by rings 34, 35, to both members 11, 12. The member 33 may be of rubber or rubber-like material, leather or a corrugated metallic annulus clamped along its inner and outer peripheries between rubber, &c., gaskets.
Patent GB-1277515-A (GB)
Title: Improvements in or relating to the coiling of elongate products
IPC: B65H19/28
Filed: 1970-07-17
Abstract: 1277515 Coiling and winding MORGAN CONSTRUCTION CO 17 July 1970 [4 Aug 1969] 34736/70 Heading B3E [Also in Division B8] Apparatus for coiling hot rolled metal rod or bar or other elongate material on a rotating mandrel includes a front end catching device comprising clamping means partly surrounding one end of the mandrel said clamping means being rotatable about an axis spaced laterally from the rotational axis of the mandrel and guide means for diagonally directing the front end of the rod or bar between the mandrel and the clamping means so that it is gripped. The coiler 2 comprises a gear housing 4 mounted on a carriage 6 movable along tracks 10 by a cylinder 5 (Fig. 2). A sleeve 12 carries a pinion 16 in the gear housing and a mandrel shaft 24 extends through the sleeve. The end 26 of the shaft is grooved to accommodate pivoted links 28 which carry curved mandrel sections 32 (Fig. 4). Each mandrel section is also pivoted to the sleeve 12 by links 36. The mandrel sections are collapsed by pulling the shaft 24 by means of a double acting cylinder 42 on the gear housing thus an accumulated coil can be removed from the mandrel. The coiler is further provided with an axially adjustable end plate assembly 48 mounted on a second carriage 50 movable on tracks 50b on the carriage 6 by means of a cylinder 51. The front end catching device comprises a cylindrical housing 59 carried by an arm 60 mounted on the carriage 6. The housing supports guide rollers 64 seated in a circular track 66 attached to end plate 58b which has an annular surface 70 and a circular clamping surface 72 extending laterally therefrom which define a clamping groove 74. The end plate 58b and its clamping surface 72 rotate about an axis 76 which is urged away from the mandrel axis 80 by an hydraulic rotary actuator 78. The clamping surface 72 contacts the coil winding surface 47 at 82 the maximum width of the clamping groove 74 being spaced at the bottom of the apparatus. The catcher also includes guide means comprising an arm 84 pivoted to a support 85 (Fig. 2) and actuated by a cylinder 89 the arm being movable axially against a spring 90 (Fig. 4). The arm has a curved lower section 92 forming first and second guide surfaces 94 and 96 the first guide surface curving inwardly towards the coil winding surface 47 and the second guide surface curving in a diagonal direction towards the annular surface 70 on end plate 58b. In operation, as the leading end of the rod proceeds into the clamping groove it is eventually gripped between surfaces 72 and 74 and the end plate 58b is wedged slightly upwards and the winding commences. As the coil forms the arm 84 is urged away from the end plate 58b until several turns have been made whereupon the cylinder 89 lifts the arm into its operative position. A hot coil of rod is cooled by a fan 108 in housing 59.
Patent GB-650805-A (GB)
Title: Improvements in self-operating mechanism for retarding the movement of an object down an inclined runway
IPC: B41D3/00
Filed: 1945-09-26
Abstract: 650,805. Hydraulic brakes. WOOD NEWSPAPER MACHINERY CORPORATION. Sept. 26, 1945, No. 34784/47. Convention date, Dec. 29, 1944. Divided out of 650,752, [Group XVI]. [Class 103 (i)] [Also in Group XVI] A self-operating mechanism for continuously retarding the movement of an object down an inclined runway, e.g. for retarding the movement of a stereotype plate travelling from a casting box to finishing and cooling units, comprises a shaft 163 carrying a roller 156 having supporting contact with a flat edge surface on the object during its movement, such contact continuously rotating the shaft 163, a pair of gears 174, 175 in mesh providing the retarding effect, one being driven by the shaft 163, an enclosure 160 closely surrounding the gears, a reservoir 184 for a fluid such as oil, and conduits connecting the reservoir and the enclosure and thereby providing a closed circuit for the circulation of the fluid. The gear enclosure 160 communicates by an inlet 178 and outlet 179 with the reservoir, the retarding effect being varied by controlling the flow through the outlet by adjusting a screw 180. The whole retarding device is secured to the machine by brackets 185 , adjustable vertically by a screw 187.
Patent GB-852444-A (GB)
Title: Improvements in or relating to absorption refrigerating apparatus
IPC: F25B33/00
Filed: 1958-10-30
Abstract: 852,444. Refrigerating. ELECTROLUX Ltd. Oct. 30, 1958 [Nov. 16, 1957], No. 34845/58. Class 29 In a continuous cycle absorption system in which the lower part of the flue tube 15 supplies heat to pump 19 discharging into standpipe 21 supplying liquid heat exchanger 11, the heat of the upper part of the tube 15 is used to operate a second pump 27 withdrawing weak solution from the exchanger 11 and returning it to the standpipe. As shown, expeller 13 receives heat from the flue in the same zone as does pump 19 but this is optional. When an electric heater is used, pump 27 is inoperative, but, when a flame heat source is used, the normally wasted heat actuates pump 27.
Patent GB-181402-A (GB)
Title: Improvements in or connected with the controlling valves of steam steering engines
IPC: B63H25/32
Filed: 1920-12-10
Abstract: 181,402. Paulin, W. J., and Fortune, T. C. Dec. 10, 1920. Economizer valves and valve-gear. - In a steering-engine of the type in which a stop-valve 2 is operated from the spindle 14 of the reversing- valve 3, the stop-valve is operated by a twoarmed lever 8 having a pin and slot connection 19 with the spindle 14 of the reversing-valve. The spring-pressed valve 2 is operated by a spring- pressed spindle 4 provided with a head 5 normally engaging both arms 6, 7 of the lever 8 which is operated by a crosshead 15 mounted on the spindle 14. Movement in either direction of the valve 3 imparts a reduced movement to the valve 2.
Patent GB-301424-A (GB)
Title: Improvements in or relating to impulse senders of the finger disc type
IPC: H04M1/31
Filed: 1928-11-27
Abstract: 301,424. Telefonaktiebolaget L. M. Ericsson. Nov. 29, 1927, [Convention date]. Applied by speed responsive devices.-In impulse transmitters of the finger-hold type for telephone systems and in which the shaft of the speed-regulator is driven by worm gearing, the shaft is displaced axially during the setting of the dial so that the braking device of the regulator is inoperative. The dial and worm-wheel 6 are locked on a common shaft, and during the setting of the dial the worm-shaft 26 of the speed regulator moves downwardly in bearings 28, so that a brake at the upper end of the shaft 26 is put out of action. When the dial comes to rest at the set position, the shaft 26 over-runs the worm-wheel 6 and is thus raised to its normal position. The speed regulator comprises weights 33 pivoted to a collar 34 on the shaft and, during the return movement of the dial, the upper ends of the weights engage a concave braking surface 32 with substantially constant pressure. The frictional reaction varies with the speed of the shaft 26 as the weights 33 swing outwardly due to centrifugal action.
Patent GB-430087-A (GB)
Title: Improvements in or relating to vehicle number plates
IPC: G09F13/06
Filed: 1933-12-13
Abstract: 430,087. Picture frames &c. ROELOFSZ, T. J., 34, Farm Elandsfontein, Post Office Van Wyks Rust, Heidelburg, South Africa. Dec. 13, 1933, No. 35098. Convention date, March 20. [Class 11] [See also Group XVIII] A vehicle number-plate comprises a plurality of stencil plates 1 supported in a rectangular frame 5 which is detachably secured to an illuminated casing 3, opal or like glass being provided in or behind the stencil openings. The plates are placed in the frame through a slot 5a which is thereafter closed by a T-shaped member slid horizontally from one end of the frame and sealed.