baber/WOPTO huggingface dataset:
Patent GB-504015-A (GB)
Title: Synchronised electron discharge valve oscillator circuits
IPC: H03B19/10
Filed: 1937-10-15
Abstract: 504,015. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd., and BARNARD, R. M. Oct. 15, 1937, No. 34066/36. [Class 40 (v)] An oscillation-generator comprising a valve, preferably of the screened-grid type, operating as a dynatron oscillator having its frequency determined by a locking frequency applied between its control grid and cathode is characterized in that its input circuit comprises a grid condenser and leak resistance. The valve V1 has an oscillatory circuit LC connected in its anode lead. The screening grid is maintained at a higher potential than the anode and the locking frequency, received from a transformer T1 is applied through a grid condenser C4, a leak resistance R4 being provided between the grid and cathode. The system is intended for use as a frequency multiplier, the output being taken from the oscillatory circuit LC by means of capacity coupling C5, R5, and passed through a buffer amplifier V2 to a second amplifier V3, thereby reducing the damping on the oscillatory circuit. The plate voltage of valve V1 is adjusted so that the valve just oscillates.
Patent GB-1501221-A (GB)
Title: Process for the selective allylation of orthoalkoxyphenol
IPC: C07C43/215
Filed: 1975-08-15
Abstract: 1501221 Selective alkylation of ortho alkylphenols RHONE-POULENC INDUSTRIES 15 Aug 1975 [16 Aug 1974] 34097/75 Addition to 1402974 Heading C2C A process for preparing an o-alkoxy-p-allylic phenol comprises allylating an ortho-alkoxypara-unsubstituted phenol with an allylic halide, allylic sulphonate or allylic sulphate in the presence of an aqueous solution of (a) an alkali metal hydroxide or an alkaline earth metal hydroxide and (b) an alkali metal salt, acidifying the reaction mixture and recovering the allylated reaction product. In Examples 1-6, guaiacol is reacted with allyl chloride under the reaction conditions of the present process to produce p-eugenol.
Patent GB-832855-A (GB)
Title: Catalytic dehydrogenation of n-methylpyrrolidine
Inventor: JEFFERS FRANCIS GEORGE
IPC: C07D207/323
Filed: 1957-11-01
Abstract: N-methylpyrrole is produced by passing N-methylpyrrolidine vapour and hydrogen at elevated temperatures over a platinum or palladium catalyst supported on silica gel.  The amount of platinum or palladium is conveniently from 1 to 10% of the weight of the gel and the process is carried out at a temperature of 200-500 DEG  C. Preferably the proportion of hydrogen in the gaseous mixture is high, e.g. at least 5 molecular proportions of hydrogen to one of N-methylpyrrolidine vapour.  The hydrogen issuing from the condensers may be recycled.  A method of preparing the catalyst is given.
Patent GB-1126237-A (GB)
Title: Liquid dispensing device
Inventor: DOWNIE GEORGE
IPC: G01L1/22
Filed: 1966-07-29
Abstract: 1,126,237. Delivering measured quantities of liquid. GASKELL & CHAMBERS. 13 July, 1967 [29 July, 1966; 7 Feb., 1967], Nos. 34182/66 and 5690/67. Heading B8N. A device for dispensing measured quantities of liquid comprises a free piston 11 mounted in a cylinder 10 having inlet and outlet valves 13 at each end arranged such that when one inlet valve is open the opposite end outlet valve is closed and vice versa, the valves being actuated by cam means 20, 21 at each end of the cylinder. The cam means includes a pair of resilient strips 21 mounted on collars 20 which are secured to a shaft 19 on which the piston is guided. The shaft is rotatable in one direction only by means of a handle 24 via a pawl-and-ratchet device 25 so that the valves are actuated to cause liquid to be dispensed alternately from opposite sides of the sides of the piston. The strips 21 are guided into contact with the valves by means of ramps 22. The cams may be positioned by the handle such that all the valves are closed thereby preventing the pressurized liquid acting on the piston when not required. In order to prevent the device from being actuated before the piston reaches the end of its stroke, a catch 26 is adapted to engage a slot in the collar 20 and is only released when the piston abuts a plunger 27.
Patent GB-471403-A (GB)
Title: Playing cards
IPC: A63F1/02
Filed: 1936-12-12
Abstract: 471,403. Playing-cards. NUSSGRUBER, G. Dec. 12, 1936, No. 34194. Convention date, Dec. 31, 1935. [Class 132 (ii)] Playing-cards . are made of polygonal contour having only obtuse angles, Fig. 1, or of oval shape Fig. 2, and have only one axis of symmetry the objects being to facilitate correct orientation when picking up the cards and to minimize wear at the corners. The playing face of each card is divided into three or more playing fields each representing a different designation or value.
Patent GB-1363646-A (GB)
Title: Combined upward flow filtration and sedimentation tanks
IPC: B01D21/00
Filed: 1970-07-14
Abstract: 1363646 Upward flow filtration and sedimentation apparatus BRITISH WEDGE WIRE CO Ltd 14 July 1971 [14 July 1970] 34194/70 Heading B1D Sewage is purified by the upward flow filtration and sedimentation apparatus shown in Figs. 2 and 3 by feeding raw sewage into a rectangular tank 12, Fig. 2, via an inlet 12 and a bffle 13 whereupon the sewage is filtered by upward flow through two, spaced, horizontal wedge-wire screens 17. Clarified water first passes from the screens up through transverse, perforated trays 22 which communicate via openings 23, Fig. 3, with channels 15, 16 and then out via exit 14. The area above the screens 17 is separated from the remainder of the tank by partitions 19, 21. Sludge is intermittently scraped from the bottom of the tank by means of a transverse blade 30 and exits via at least end exits 36. The scraper blade 30 is attached both to an arm 31 which is pivoted on a spindle 32 itself attached to a vertically and horizontally reciprocable post 28, and also by means of a chain 33 to an arm 34 which is fixed to the post 28. The blade 30 is raised from the tank floor upon return travel of, the post 28. In the modification shown in Fig. 6 raw sewage is fed into circular tank 51 via inlet 52. Water flows upwardly through a rectangular wedge wire screen 57 and diagonally arranged perforated trays, Fig. 5 (not shown) which connect with clarified water outlet channel 61 and exit (54). A continuously rotating shaft 65 is located in a central opening in the screen 57 and supports a framework having overlapping and horizontally and vertically inclined scraper blades 74 and side blades 75. Sludge is removed via exit 79.
Patent GB-1126789-A (GB)
Title: Signal mirror devices
IPC: G09F13/16
Filed: 1966-07-29
Abstract: 1,126,789. Signal mirror. M.G. MURRAY. July 29, 1966 [Aug.31, 1965], No.34281/66. Heading G2J. A signal mirror comprises two transparent plastics sheets 1, 3 laminated together with a reflecting deposit 3 of aluminium therebetween extending over the area of the sheets except for a sighting opening 5, and, adhesively attached to one of the sheets, a backing member 4 comprising a layer of a flexible closed cell plastics foam, of greater thickness than the combined thickness of the sheets 1, 3, and extending over the sheet apart from the sighting opening 5. The backing member may have a puncture-resistant plastics sheet 7a glued thereto, which is covered with a coloured reflective plastics sheet 7, and said sheets 7, 7a may be continued around the edges of the mirror. The foam may be a polyethylene foam, and the edges of the device may be sealed by an ambient-temperature setting neoprene solution. The mirror is aligned for use by means of the sighting openings 5 which has a hinged flap 6 therebehind having a coloured reflective surface 6b and which is held in any desired position by the action of the backing member. Correct alignment of the coloured reflected image formed by the flap 6 as described in the Specification causes the mirror to become aligned for use.
Patent GB-975960-A (GB)
Title: Improvements in or relating to methods of manufacturing semiconductor devices
IPC: H01L29/74
Filed: 1961-09-26
Abstract: 975,960. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 26, 1961 [Sept. 29, 1960], No. 34450/61. Heading H1K. Semi-conductor devices are manufactured by cutting a rod of semi-conductor material transversely into slices and dividing the slices radially into sectors. Fig. 16 shows a section of a circular semi-conductor wafer provided with electrodes which is cut into sectors to provide a plurality of PNPN controlled rectifiers each as shown in Fig. 18. A large electrode 18 ohmically contacts a first N-type layer 17 and the smaller electrode 19 ohmically contacts the second P-type layer 12. Electrode 20, which is secured to a copper and gold plated molybdenum plate 21, contacts the fourth P-layer. The assembly may be produced by enclosing an N-type silicon slice in Al 2 O 3 heating for 5 hours at 1200‹ C. to provide P-layer 12 and then in oxygen to provide a thin silica layer 13 (Fig. 11). The slice is then covered with wax except for surface region 16, etched to remove the oxide layer from that region and heated in a phosphorus atmosphere to produce the N-type layer 17. The wax and remaining oxide layer and outer edge of the P-layer 12 is then removed and the electrodes 18, 19 and 20 applied by alloying lead with 1% nickel to provide ohmic contacts. In a further embodiment, a plurality of P + PN diodes are produced in a similar manner by heating a P-type silicon wafer in phosphorus and oxygen to form an N-type layer covered by silicon dioxide and phosphorus pentoxide, grinding the top surface, heating in boron trichloride and nitrogen to form a Pr region on the upper surface while the N-type region extends by further diffusion, and grinding the upper and lower surfaces to provide the P +, P, N structure. The structure is nickel plated in an electroless bath containing nickel chloride, sodium hypophosphite, ammonium chloride, sodium citrate and water at a temperature of 90‹ C. The coating is improved by further heating at 700‹ C. for one hour and the device is then held in clamps which protect the upper and lower surfaces and etched in a bath of HF and HNO 3  to remove the nickel and N-type portions at the edges. The device may be encapsulated and germanium may be used in place of silicon.
Patent GB-196244-A (GB)
Title: Toy figure with sound producing device
IPC: A63H3/31
Filed: 1922-12-18
Abstract: 196,244. Heumann, B., and Bõtz, E. April 15, 1922, [Convention date]. Animal.-A sound-producing toy is adapted to emit a sound on the movement of the head with either a tilting or rotating motion. The head b is pivoted at m to a pin k rotatably mounted in a tube i carried by the body a. The head is connected by a link d to bellows f, which sound a reed gthe pipe h of which is bent at right-angles and doubled upon itself.
Patent GB-827953-A (GB)
Title: Improvements in sheet separating and forwarding machines
IPC: B65H3/40
Filed: 1954-09-01
Abstract: 827,953. Feeding sheets. BACKHOUSE, H. T. Dec. 1, 1955 [Sept. 1, 1954; Oct. 28, 1954], Nos. 34475/55 and 34476/55. Divided out of 827,952. Class 100(1) Sheet separating and forwarding:- Sheet separating and forwarding apparatus of the kind in which an edge or corner portion of each uppermost sheet in turn of a pile of sheets is first separated from the pile by separating grippers 94, Fig. 1, and the sheet is then transferred to forwarding grippers which move substantially in the plane of the sheet to forward the sheet over the pile is characterized by the provision of two forwarding suction grippers 230, 242 (or two sets of such grippers) which operate, respectively, on alternate sheets. The sheets are forwarded to overlie a front suction gripper 150 which feeds them to a conveyer 152. The gripper 94 and auxiliary sheet separating aids such as air-blasts and presserfeet are described in Specification 774,874, and the gripper 150 is as described in Specification 774,875. The gripper 94 could be replaced by two sets of grippers which operate respectively, on alternate sheets as described in Specification 827,952 and two stop feet incorporating air-blast nozzles which alternate with each other, and two fluffing air-blast nozzles also acting alternately may be used. In the form shown in Figs. 3 and 4, each sheet is separated by two suckers 10, 11 each of the kind incorporating a suction cylinder 18 arranged to rock the sucker mouth around a stop 19 when the mouth is sealed by a sheet. The cylinder is carried by a body part 21 on a carriage 22 adapted to be rocked up and down by a cam and bell-crank lever. The cylinder is connected by a suction inlet 20 to a bore in the body 21 to which a suction source is connected, and a slide valve 27 in the bore is depressed, against the action of a spring, by the abutment of a lever 36 with a fixed stop 42 when the body 21 rises to cut off automatically the suction to the sucker, and connect the latter to atmosphere. An air-blast from a baffie 44 assists sheet separation. There are two pairs of forwarding suckers 14, 15, Fig. 4, each of which is of the double-acting collapsing type, and each pair is reciprocated along guide rods 52 which can be raised so that the return stroke is at a higher level to above the sheet being operated on by the other. The suction cylinder 50 of each sucker, such as 14, is attached to a carriage slidable on the rods 52 by means of a cam and link means, and the rods 52 are secured to a slide 58 also raised by a cam and lever means. A rotatable valve 62 controlling the suction inlet to the sucker 14 is operable by a bell-crank lever 64 having surfaces 68, 69 adapted to abut fixed stops 70, 71 at each end of the travel of the sucker. All four suckers are similarly constructed and operated, the pairs 14 and 15 each forwarding a sheet in turn.
Patent GB-1268730-A (GB)
Title: Radio signal transmission system
Inventor: LUTZ KARL
IPC: H03H7/48
Filed: 1970-07-16
Abstract: 1,268,730. R.F. couplings. PATELHOLD PATENTVERWERTUNGS - UND - ELECTRO--HOLDING A.G. 16 July, 1970 [18 July, 1969], No. 34497/70. Heading H4A. A circuit arrangement for feeding an aerial R A , which is in parallel with a capacitor C 2 , from two transmitters S 1 , S 2 , of like frequency and phase, comprises two inductors L 1 , L 2  connected in series between said transmitters. The aerial is connected to the common point of said inductors and they are bridged by a series combination of two capacitors 2C 1  separated by a fixed resistor R 1 , and by an inductor L B . With proper adjustment, the resistor R 1  only carries current when one of the transmitters is ineffective. The inductor L B  is adjusted to compensate for the effects of stray capacitances C ST , C ST .
Patent GB-1312125-A (GB)
Title: Compressors for refrigeration systems
IPC: F04B35/00
Filed: 1970-07-16
Abstract: 1312125 Reciprocating compressors I PELLIZZETTI 16 July 1970 19 July 1969 14 Jan 1970 and 20 Feb 1970] 34556/70 Heading FIN A compressor for a refrigeration system has a piston 14 reciprocable by an inclined crank 2a, the crank 2a being enclosed in a tubular part 18a to which is fixed a flexible diaphragm 22 sealingly separating the crankcase 6 from a bearing housing 5. Thus the crankcase 6 is hermetically sealed, while the motor (not shown) driving the crankshaft 2 is accessible for maintenance. The tubular part 18a is non-rotatable about its axis, the axis describing a cone during operation. The movement of the tubular part 18a is converted into reciprocatory movement of the piston 14 by a cylindrical member 18 slidable in a transverse bore in the piston and secured to the tubular part 18a. Alternatively, Fig.4 4 (not shown), the tubular part is provided with a spherical socket (29) which receives one of the spherical ends of a connecting rod (28), the other spherical end being received in a spherical socket in the piston 14. A conical spring (33) surrounding the connecting rod (28) urges the rod ends into their sockets. A delivery valve in the form of an O-ring 11 and an inlet valve 10 in the cylinder head 7 or the piston 14 are provided. A cavity A is filled with lubricant for the crankshaft 2.
Patent GB-413200-A (GB)
Title: Improvements in and relating to index tabs
IPC: B42F21/08
Filed: 1933-12-08
Abstract: 413,200. Index tabs. POLLAK, J. E., 20, Holborn, London.-(Multigraph Co. ; 1840, East 40th Street, Cleveland, Ohio, U.S.A.) Dec. 8, 1933, No. 34612. [Class 16.] An index tab, particularly for use with an address - printing plate, is adapted to be readily and removably mounted in any of a number of regions on the plate and to be shifted in each region into a plurality of positions. The tab 20, Fig. 5, comprises a strip of sheet metal provided with a central tongue 23 at its lower end, with recesses 24 in the centre of its sides, and with a curved tongue 26 punched out from an aperture 25. The tongue 23 is adapted to engage loosely in any one of a number of slots 12, Fig. 3, in'the walls of a trough 11 in the plate 10, and the tongue 26 engages slidably over the turned-over top edge 14 of the plate. A row of projections 13 are provided on the plate, one being arranged opposite each interval between the slots 12. The tab can thus be swung pivotally about the tongue 23, from a central position in which it is held between two of the projections 13, to either of two inclined positions in which one or other of the projections engages with the aperture 25.
Patent GB-1080080-A (GB)
Title: Methine dyes
Inventor: DEPOORTER HENRI
IPC: C09B23/10
Filed: 1964-08-25
Abstract: The invention relates a cyanine dye salt and a merocyanine dye containing a methine chain of 3 and 2 carbon atoms respectively and at least one benzothiazole nucleus having in the 4- or 7-position a sulphamyl group, an N - acetyl sulphamyl group, an N : N - dimethyl-sulphamylamino group, a methyl sulphonamido group or an N-acetylmethyl sulphonamido group.  These dyes are prepared by the usual condensation reactions from appropriately substituted benzothiazolium salts.  In the examples, the cyanine dye salts may be in the anhydro form containing a -NH-SO2- group betaine structure and may contain a meso-alkyl or phenyl group in the methine chain.ALSO:2 - Methyl - 4 - chlorosulphonylbenzothiazole is prepared by diazotizing 2-methyl-4-amino-benzothiazole and reacting the diazonium salt with CuCl2 and acetic acid saturated with sulphur dioxide.  It is converted to the 4-sulphamyl compound by treatment with conc. amomnium hyroxide and the latter is in turn converted to the N-acetyl-4-sulphamyl compound by treatment with acetic anhydride. 2 - Methyl - 7 - chlorosulphonyl benzothiazole is obtained similarly from the 7-amino compound obtained by reduction with Raney nickel of the 7-nitro compound and undergoes similar reactions to produce the 7-sulphamyl and 7-acetyl sulphamyl compound.  2-Methyl-4 or 7-methylsulphonamido benzothiazole is prepared by reacting the 4- or 7-amino compound with methylsulphonylchloride. 2 - Methyl - 7-dimethylsulphamyl-amino benzothiazole is prepared by reacting the 7-amino compound with dimethyl sulphamyl chloride.  The above benzothiazole compounds containing -SO2NH-are converted to their p-toluene sulphonates by reaction with methyl and ethyl p-toluene sulphonate. 2-Methyl-3-(N-methylsulphonyl)-carbamyl methyl - 7 - sulphampl benzothiazolium bromide is prepared by reacting N-(bromacetyl)-methane sulphonamide with the corresponding base; and 2:3-dimethyl - 7 - methyl - sulphonamido - benzothiazolium methyl sulphate by reacting dimethyl sulphate with the corresponding base. 2:3 - Dimethyl - 7 - N:N - dimethyl - sulphamylamino benzothiazolium methyl sulphate is obtained similarly.
Patent GB-655577-A (GB)
Title: Improvements in or relating to sealing devices for rotating shafts
Inventor: MILNER THOMAS
IPC: F16J15/32
Filed: 1948-11-19
Abstract: 655,577. Stuffing-box substitutes. SUTCLIFFE, Ltd., R. Nov. 19, 1948, No. 34693/47. [Class 122(v)] A rotating shaft a is provided with a deformable seal ring d of circular cross - section rigid with and rotating with the shaft a and accommodated in a groove e in the wall of the shaft housing f.
Patent GB-831762-A (GB)
Title: Differential drive mechanism for a control drum in a machine tool
Inventor: SMITH EDWIN ROY
IPC: B23Q5/40
Filed: 1957-11-07
Abstract: 831,762. Lathe details. SENECA FALLS MACHINE CO. Nov. 7, 1957, No. 34766/57. Class 83 (3). In a machine-tool, a differential connection allows an angular movement of a timing-drum for controlling the speed or direction of carriages &c. to be co-ordinated with the linear movement of a tool carriage, when either singly, or jointly, operated and controlled. The carriage 10 supports mating gears 11, 15, the former being threadably mounted on a lead-screw 12, and the latter on a splined shaft 16, driven through a gear-wheel 27, the rotation of which transmits movement to the carriage, providing the leadscrew 12 is held stationary by a magnetic friction-brake 14. Alternatively the shaft 16 may drive the lead-screw 12 through sprockets 20, 21 and chain 22; the sprocket 20 being connected to shaft 16 by a magnetic clutch 23, the latter being energized when brake 14 is ineffective and vice versa. A timing-drum 30, having a worm-gear 31 engaged by a worm 32 on a shaft 33, is driven at a predetermined speed by either the shaft 16, or the lead-screw 12. The worm-shaft 33 is connected to shaft 16 by sprockets 42, 43, chain 44, shaft 41, sun-wheel 40, planet-pinion 38 and an off-set arm 37 rigid with shaft 33; and the shaft 33 is connected to the lead-screw 12 by sprockets 54, 55 and chain 56, the sprocket 55 being rigid with a differential casing 51 mounted freely on shaft 41 and having internal teeth 50 mating with planet-pinion 32 on arm 37. In use, the slow travel of the carriage is effected with the casing 51 held against rotation by the brake 14, the shaft 16 driving the drum; and fast travel is effected by rotating the lead-screw in addition to the gears 11, 15, the extra movement being conveyed to the drum through sprockets 54, 55, &c.
Patent GB-1513605-A (GB)
Title: Beauty treatment device
IPC: A61H23/02
Filed: 1976-08-20
Abstract: 1513605 Massage device MABUCHI MOTOR CO Ltd 20 Aug 1976 [4 Sept 1975 16 Oct 1975] 34844/76 Heading A5R A beauty treatment device that includes a cushioned plate which is repeatedly caused to tap the skin comprises, in the Fig. 1 form, a main housing 1, 2, containing a motor 15 which, via gears 21, rotates a disc 10 to cause rollers 11 to strike a lower abutment 3A of a frame 3 which is fixed to an actuator rod 5 for the plate 7 but which slides on rod 9 to compress spring 17. Continued rotation of the disc 10 causes the roller 11 to disengage from the abutment 3A such that spring 17 drives the plate forwardly within a guide 6 whose mouth is placed on the skin to maintain the required stroke distance. Second cushion 4 reduces vibration of the frame 3. The tension of spring 17, and hence the intensity of tapping, can be adjusted by screw 14. The motor is driven by a battery control box or batteries mounted in the housing. In the former case the motor speed can be varied to vary the rate of tapping. In the modification of Figs. 7, 8 three adjustment screws 44 allow different degrees of spring adjustment. They may be used independently or in any combination by unlatching the appropriate pin from an end recess of the corresponding slot 51. The plate 37 and its cushion and the guide 36 may be replaced by similar items of different diameters.
Patent GB-761519-A (GB)
Title: Improvements in and relating to shoes
IPC: A43C11/00
Filed: 1954-12-01
Abstract: 761,519. Shoes. WEGNER, T. O. Dec. 1, 1954, No. 34863/54. Class 17 (2). A shoe upper of canvas, leather or other non-elastic material has a foot-receiving opening formed at the front by the inner edges of a relatively small panel 4 and a strip 6, and at the sides and back by the inner edges of a U-shaped strip 9 formed as an upward extension on a strip 8 secured to the top edge of the upper to project inwards from the sides. The parts 4, 6, 8, 9 are of knitted or woven fabric with transversely extending rubber threads, with thick rubber threads 10, 11 at the junctions of the parts 4, 6 and 8, 9. Protective pads 12, 13 of rubber extend from sole over parts of the upper. The shoe is intended for sports and athletic wear.