baber/WOPTO huggingface dataset:
Patent GB-500867-A (GB)
Title: Method of and apparatus for grooving optical lenses
IPC: B24B9/14
Filed: 1937-06-16
Abstract: 500,867. Grinding grooves in lens edges. WILLIAMS, A. F. June 16, 1937, No. 16792. [Class 60] A machine for grinding marginal grooves 31 along the curved edge 32 of a lens C, to enable it to be mounted in a channel in a spectacle frame, comprises a grinding-wheel 18 driven 'by a motor 16 and provided with a guard 19 and a receptacle B from which water is supplied by a pipe 20. A standard 22 adjustably mounted by means of slip joints 26 carries a gauge plate 23 shaped, adjacent the wheel 18, to fit the curved edge 32 of the lens, and secured to the plate 23 is a spring 24 having a gauge end 28 which engages a curved face of the lens so that the groove is cut to the required depth. The position of the end 28 is adjusted by a cam 29 pivoted to the plate 23 and movable by a screw 29<1>, and in order to move the spring 24 outwards during cutting of the first groove, a cam 35 is provided, carried by a shaft mounted on the plate 23 and movable by a lever 33. The lens is held between a rubber disc 41 carried by a yoke arm 42 and a rubber disc 40 carried by a shaft 45, the yoke arm having a collar 44 slidable on the shaft and pressed by a spring 43 to grip the lens; the collar is moved on the shaft by a rod 51 movable by a member 50 operated by a lever 47. The shaft 45 is rotatable in a part 39<1> of a universal joint 39 mounted on a carriage 38<1> adjustable by rack gearing on a standard 36. By rotation of the shaft 45 and movement of the universal joint, the lens edge is moved in the required path.
Patent GB-425660-A (GB)
Title: A system or method of scanning an optical image: for use in conjunction with any moving spot scanning device: for television or the like
IPC: H04N5/30
Filed: 1934-06-09
Abstract: 425,660. Television. RICHARDSON, H. A., Darley House, Marlboro Road, Buxton, Derbyshire. June 9, 1934, No. 17136. [Classes 39 (i) and 40 (iii)] An optical image A1 B1 of an object AB is projected on a photo-electric surface PS which is scanned by a spot of light or other radiation controlled by a mirror drum or an apertured disc ND. In addition to the photoelectric cathode, the cell PC has a negatively biassed grid G1 and an anode G2 and has a non-linear relationship between incident light intensity and anode current. The non-linear relationship is obtained by the grid G1 or by the shape of the envelope or of the other electrodes. Reference has been directed by the Comptroller to Specification 368,705.
Patent GB-515702-A (GB)
Title: Improvements in or relating to door, window or like frames
IPC: E06B7/23
Filed: 1938-06-09
Abstract: 515,702. Door and window frames ; draughts, excludng. METAL TRIM, Ltd., and PENKALA, E. June 9, 1938, No. 17176. [Class 20 (iii)] A door, 'window or like frame constructed of profiled sheet-metal sections 1 is provided with a slot 3 which is disposed at an angle to the general plane of the frame for the reception of a draught-excluding element 4. The slot 3, which may extend inwardly at an angle of about 45 degrees to the general plane of the frame, is of sufficient depth to receive the flat portion 4a of a rubber draught-strip 4 so that only the tubular portion of the strip projects.
Patent GB-571069-A (GB)
Title: Improved means for heating electrically handlebars of motor cycles and like control handles of power driven machines
IPC: B62J33/00
Filed: 1943-10-19
Abstract: 571,069. Warming motor-cycle handle-bars. FRY, J. E. Oct. 19, 1943, No. 17176. [Class 39 (iii)] A handle-bar 1 of a motor-cycle or control column of an aircraft is fitted with a heatinsulating sleeve 2 on which a resistance wire 3 is wound and retained at each end by a metal band 4, to which supply leads are connected. The heating resistance is enclosed by a sleeve 6 of rubber, thermo-setting material, or fabric impregnated with resin. One lead 5 is connected to earth, and the other through a switch to the distribution box of the vehicle. In a modification, the heating element is enclosed in a strip of insulating material which is wound around the handle-bar grip and connected at the ends to resilient metal bands. Specifications 23161/03, [Class 39], 24049/14, 209,062, 271,345, [all in Class 39 (iii)], 425,360, [Group XXIV], 447,619 and 453,131 are referred to.
Patent GB-1222058-A (GB)
Title: Hydraulic rotating device for ploughs
Inventor: LEMKEN VIKTOR
IPC: A01B3/421
Filed: 1969-04-02
Abstract: 1,222,058. Reversible ploughs. V. LEMKEN [trading as PFLUGFABRIK LEMKEN K.G.]. 2 April, 1969 [9 April, 1968; 20th April, 1968], No. 17198/69. Heading A1B. A rotating device for a half turn plough comprises a plough front chassis 1, a turning shaft 2, a hydraulic cylinder 9 connected to a lever 6 which engages a slot 5 in the turning shaft crank 4 by means of a peg 8. The slot 5 has a widened portion 5a of which different embodiments are illustrated in Figs. 5, 6 and 7 (not shown). The centre of gravity S of the rotatable plough frame (not shown) is arranged to one side of the turning shaft and in a mounted plough falls at the beginning of the rotation whereas in a semi-mounted plough it is lifted. In a further embodiment especially for use with semi-mounted ploughs the slot 5 has the shape of an ellipse. A tension spring 19 is arranged to support the motion of the crank 4 when the centre of gravity S is situated in the vicinity of the shaft 2 and adjustable stops 15 and 16 are provided to limit the motion of the crank. In an embodiment, Fig. 16, a barrier block is interposed between the pressure fluid conduits 13 and 14 to prevent the fluid in the cylinder 9 from returning. Pressure fluid may be selectively pumped through conduits 13 or 14 whereupon the slide block 29 opens the opposite non return valve 34, 35 and the piston 11<SP>1</SP> is driven along the cylinder accordingly.
Patent GB-111534-A (GB)
Title: Improvements in or relating to Equalizing Apparatus for Drivers' Brake Valves.
IPC: B60T15/04
Filed: 1916-11-30
Abstract: 111,534. Knorr-Bremse Akt.-Ges., and Hildebrand, W. Nov. 30, 1916. Fluid-pressure.-The equalizing reservoir is utilized to control the admission of air to the train-pipe from the main reservoir in releasing the brakes, in a similar manner to that in which it controls the discharge from the train-pipe in applying the brakes. The manipulation of the driver's valve is thereby rendered independent of the length of the train and a gradual cut-off of the supply of air to the train-pipe is obtained. A slide valve o is provided, of which the piston chamber l is open to the equalizing reservoir at c and the valve chamber is open to the train-pipe by an orifice a. The valve o controls a port n which terminates a passage m leading from the seat of the driver's rotary valve b. The space above the valve b is open to the main reservoir. When the valve b is moved to what is termed the service release position shown, main reservoir air is able to pass by way of passages f, h and the usual pressure-regulator or feed-valve g to the valve cavity i thence by passage k to the piston chamber l and equalizing reservoir e. The consequent movement to the left of the slide valve o uncovers the port n and main reservoir air passes through the valve b and passage m to the trainpipe until the pressure therein equalizes with that in the equalizing reservoir. Communication between the equalizing reservoir and the main reservoir can be interrupted at any time by moving the valve b to lap position in which the passages h, k are cut off but the passage m is left open. In the known positions of the valve, the equalizing device acts in the usual way. In a modification, the passage m, instead of ending in a slide valve port (n), leads to a chamber which is normally closed to the slide valve chamber by a spring- pressed valve but is adapted to be pressed open by the slide valve.
Patent GB-1459025-A (GB)
Title: Paint compositions
IPC: C09B67/20
Filed: 1974-04-19
Abstract: 1459025 Paints IMPERIAL CHEMICAL INDUSTRIES Ltd 15 April 1975 [19 April 1974] 17233/74 Headings C3B and C3R A paint composition which can be cleaned from an applicator in the presence of water comprises (a) a water-insoluble film-forming binder dissolved in a water-immiscible diluent, (b) an acidic pigment, extender, or filler having zero #-potential at pH <3À5, and (c) a surfactant which can form a stable emulsion of (a) in water. There may be 0À25-20% (c) based on (a); the proportion of (c) may be insufficient to emulsify the whole of (a). The binder may be an epoxy, polyester, vinyl or alkyd resin, optionally oilmodified, and optionally containing urethane or polyamide moieties resin. (b) May be prepared by coating a conventional pigment, e.g. with an alkyl silicate or SiCl 4  and hydrolysing, or with Na or K silicate and acidifying. Many pigments are specified. The diluent may be white spirit, or aromatic hydrocarbons, esters, or ketones. (c) May be non-ionic or ionic, e.g. poly(ethylene oxide), alkylphenol, Na dodecylbenzenesulphonate, poly(12-hydroxy-stearic acid)/poly-  ethylene glycol ester. (c) May be incorporated immediately after preparation of a pigment mill-base.
Patent GB-994391-A (GB)
Title: Polymerisation process and catalyst therefor
IPC: C08F136/06
Filed: 1963-05-01
Abstract: A polymerization catalyst for 1,3-butadiene is made by reacting a titanium iodide, an aluminium alkyl, and a carboxylic acid and/or a beta-dicarbonyl compound in the presence of an alkyl halide.  The titanium iodide may be TiI2, TiI3, or TiI4, and the aluminium compound aluminium triethyl, triisobutyl, or trihexyl. Specified acids and carbonyl compounds are acetic acid, trichloro- or trimethyl acetic acid, oleic acid, hexahydrobenzoic acid, stearic acid, phthalic acid, adipic acid, acetylacetone, benzoylacetone, cyclohexandione - 1:3, ortho - hydroxybenzaldehyde, ethyl acetoacetate, and benzoyl acetic ester.  The alkyl halide may be methyl, isopropyl, or tert.-butyl iodide, cyclohexyl bromide, benzyl chloride, benzal chloride, butyl bromide, iodoform, or 1-chloro-4-iodobutane. The catalyst is preferably preformed and the polymerization effected in a hydrocarbon solvent or diluent.  The reaction is terminated by adding N: N1-diphenyl-para-phenylene diamine and rosin acid, or ethanolamine, isopropanol, and methylene-di-2: 21-dihydroxy-3: 31 - di - tert. - butyl - 5: 51 - dimethylbenzene. The butadiene polymers are vulcanized by conventional techniques.
Patent GB-172584-A (GB)
Abstract: 172,584. Haddan, A. J. H., (National Cash Register Co.). May 31, 1920. Web-feeding arrangements; line-spacing mechanism.-In a cash register or like machine, the record-strip 300 passes from a supply roll 301 around rollers 302, 304 over a casting 310 under a platen 313, over a writing-table 314, and around rollers 315, 309 to a winding-on roll 318. An arm 323 loose on the shaft 319 carries a friction roller 324 adapted, when the arm is rocked from the main cam shaft 166, to engage the rim of and drive a flanged disc 322 on the roll 318. The length of feed is varied automatically according to the diameter of the coil of paper on the roll 318 and may also be altered by hand to provide for the autographic or non-autographical use of the machine. The automatic variation is obtained by a pair of connected pivoted arms 342, 343, one of which carries a roller bearing on the paper coil and the other acts as a stop in the path of the reciprocating arm 323. The parts are shown in Fig. 16 as set for short feed strokes, but when the strip is to be shifted a greater distance at each feed, in order to give space for writing between successive imprints, a lever 335 is moved to the left from the position shown in Fig. 16, thus engaging a recess 337 instead of 338 with a roller 339 on a lever 340 carrying the arms 342, 343, which are thereby shifted upwardly so that the arm 323 travels a greater distance before meeting the arm 342. Retrograde rotation of the winding-on roll is prevented by a friction detent comprising a spring-controlled roller 348 mounted between the rim of the disc 322 and a projection 352, which, together with the roller, is on a pivoted arm 347 maintained in position by engagement of extensions 349, 350 of the arm with the exterior and interior of therim. After each impression, the strip is shifted to bring the imprint to the top of the table 314, so that notes may be written beneath the printing, and this is effected by rocking an arm 306 supporting the rollers 304, 309. The printing- mechanism includes, as described in Specification 169,750, sets of type-carries for printing the date, the consecutive number, and the details of the transaction. Hammer-impression arrangements.-The hammer-platen 313 is operated once to take an impression on the record-strip and then again (if required) to print on the voucher-strip, passing from a roll 355. The platen is rocked by a link 401 connected to a bifurcated lever 402 oscillated by cam-and-geneva mechanism from pins on a disc fast on the main shaft 166. One pin is longer than the other, so that when the disc is shifted axially this pin remains effective to produce one impression, viz. that on the record strip.
Patent GB-808926-A (GB)
Title: New tropeine derivatives
Filed: 1956-06-05
Abstract: The invention comprises tropeine derivatives of the general formula <FORM:0808926/IV (b)/1> wherein X represents halogen, and the preparation thereof by (a) reacting dl-tropyltropine with a p-phenylbenzyl halide, or (b) reacting the quaternary compound formed from tropanol and a p-phenylbenzyl halide with a dl-O-acyltropic acid halide and then removing the O-acyl group from the product.  In examples: (1) dl-tropyltropine is warmed with p-phenylbenzyl bromide in acetone; (2) trans-tropanol is warmed with p-phenylbenzyl bromide in acetone, the product is heated with O-acetyl-dl-tropic acid bromide, and the acetyl group is then removed by boiling with hydrobromic acid.  The products are useful for therapeutic purposes on account of their combination of ganglion-blocking and parasympatholytic properties.
Patent GB-740973-A (GB)
Title: Improvements in or relating to machines for folding or bending sheet metal
IPC: B21D5/02
Filed: 1952-07-10
Abstract: 740,973. Angular bending. BILHAM, W. C. Oct. 12, 1953 [July 10, 1952], No. 17434/52. Class 83 (4). A machine for bending sheetmetal comprises a fixed lower bending member and an upper bending member movable to and from the lower member by means comprising two links pivoted together to form a knee-joint and pivoted at their free ends to the bending members. An upper bending member 4 is movable in guides 1 to and from a fixed lower member 3 by linkage means 5 at each end of the members, adjustable stops 18 being provided on the lower member 3. Each linkage means 5 includes a link 8, adjustable in length, having a pin 8a at its upper end normally held in a lateral recess 13a of a vertical slot 13 in the upper member 4 and a link 6 pivoted to the fixed lower member 3 or to the machine framework, the links 8 and 6 being pivotally connected at their free ends 7 to form a knee joint. Each knee joint is linked at 10 to a lever 11 pivoted to the lower member 3 which when swung by a lever 23, or by a hydraulic ram, moves the knee joints inwardly or outwardly to lower or raise the upper member 4. Alternatively the links 10 may be threaded into a rotatable operating member. When a bent sheet is to be removed from the apparatus and the member 4 is to be raised more than normally the links 8 are pulled, by handles or by lever means, against springs 15 or counterweights, so that the pin 8a can slide in the vertical slot 13, springs 14 or counterweights then lift the member 4 up to stops 17. In a modification the recesses 13a may be formed in the edge of the member 4, the slots 13 being dispensed with or recesses 13a or slots 13 may be formed in the link and the pin 8a carried by the member 4. Specifications 512,521, 636,591, 715,684, 715,730 and 741,026 are referred to.
Patent GB-619876-A (GB)
Title: Improvements in brake operating mechanism for trailers
IPC: B60T7/20
Filed: 1946-06-11
Abstract: 619,876. Brakes for trailer vehicles. LOW LOADING TRAILER CO., Ltd., and CLARKE, C. V. June 11, 1946, No. 17437. [Class 103 (i)] [Also in Group XXXII] The coupling or draw-bar device of a trailer vehicle particularly such arranged to apply the trailer brakes when the trailer tends to overrun the tractor vehicle, includes a friction damper device whereby " hunting " movement of the trailer relatively to the tractor is prevented. According to Fig. 1, an arm 3 pivoted at 4 on an extension 5 of the trailer chassis 6 carrying the coupling eye 2 engages an arm 17 on a short shaft 15 to which is also secured a pair of arms 14 connected by a pullrod 16 to the trailer brakes. The brakes are thus applied if the trailer tends to overrun the tractor. This movement and also reverse movement is damped by the friction between a curved surface 7 of the arm 3 and a friction pad 8 on a lever 9 acted on by a spring 11. The brakes may be applied by hand by a lever 17<SP>1</SP> on the shaft 15 the locking pawl 19 for the lever being normally held out of engagement with the rack 18 during travel, by a pin passed through holes 21, 22 in the pawl and lever. A limiting stop 12 for the arm 3 is provided. In a modification of the mechanism shown in Fig. 1, the friction damper comprises a spring-pressed disc engaging one side of a lever similar to the lever 3. According to the Provisional Specification the tow-bar is mounted to reciprocate on the trailer and abuts on a pivoted brake operating arm and the damping device comprises a friction band connected at its ends to the tow bar and spring-loaded at one end so that it slides over a drum as the tow bar moves relatively to the trailer chassis.
Patent GB-918386-A (GB)
Title: Improvements in continuous acting sieve centrifuges
Inventor: KAETHER WILLY
IPC: B04B11/06
Filed: 1959-05-22
Abstract: 918,386. Centrifugal strainer separators. BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT A.G. May 22, 1959, No. 17487/59. Class 46. A continuously-acting centrifugal strainer separator has a drum which in axial cross section is curved, or composed of several sections of different inclination, and has also within the drum a concentric rotating distributor disc which is movable axially of the drum and whose plane is at right angles to the drum axis. Material to be centrifuged is introduced at 10 into a drum 1 of curved crosssection and is thrown outwards to the drum surface by a distributor plate 2 which rotates at the same speed as the drum (as shown) or at a different speed. Besides straight or curved ridges 20 a cylindrical or conical jacket 21 may be provided on the plate 2. It may be moved axially, so as to be opposite regions of the drum surface of different inclinations, by a hydraulic cylinder 9 coupled to the shaft 4 of the disc 2 through the bearing shown. The disc shaft 4 is splined within the drum shaft 3. The discharged solids are collected and slowed down by fixed collecting rings 12, 13. Material collecting below the disc 2 may be ejected through extra-large holes 18, received in trough 19 and fed again to the centrifuge. Wash liquid (preferably a saturated solution of the solids, e.g. sugar) introduced at e may be used repeatedly, passing through tunnels 15, pumps 16 and discharge points f, g. Water or steam may be used instead. A stepped drum is depicted in Fig. 4 (not shown).
Patent GB-662704-A (GB)
Title: Improvements in and relating to gas heaters
IPC: F24C3/10
Filed: 1949-07-02
Abstract: 662,704. Gas burner igniters. PRICE, C. P. July 2, 1949, No. 17541/49. Class 75(iii) A hood suspended above but to one side of a gas burner is swung to an operative position in the vertical path of the gas arising from the burner to direct such gas horizontally to a lighting point remote from the burner. A gas-fired room-heater is shown wherein a double hood comprising two troughs 44, joined medially by a trough 45 and having a side extension 46, is suspended by rods 47, 27 above but to the side of two longitudinal gas burners 43 and when manually swung to the dotted position, Fig. 8, by a hand inserted through a closable aperture 22 directs gas rising from the burners 43 to a pyrophoric igniter. This igniter comprises a steel abrasive member 33 over which a flint 42 is pulled by a rod 36 and then released for return by a spring. 40.
Patent GB-1417280-A (GB)
Title: Herbicide
IPC: A01P13/02
Filed: 1973-04-12
Abstract: 1417280 Mixed herbicides BADISCHE ANILIN- & SODA-FABRIK AG 12 April 1973 [13 April 1972] 17554/73 Heading A5E A herbicidal composition comprises a composition of a) a benzofuranyl compound of the formula and b) a carbamate compound of the formula where X denotes hydrogen or lower alkyl of a maximum of 3 carbon atoms. Other herbicidal compounds which may be included are pyridazones and cyclohexyl substituted uracils. The compositions may be used as selective weedkillers in crops or as total herbicides.
Patent GB-653102-A (GB)
Title: Improvements in or relating to pulse generating apparatus
IPC: H03K3/78
Filed: 1948-06-30
Abstract: 653,102. Supersonic inspection devices. SPERRY PRODUCTS, Inc. June 30, 1948, No. 17570. Convention date, July 5, 1947. [Class 118 (ii)] [Also in Group XL (c)] A damped oscillatory pulse of relatively long duration is cut short by applying a shortduration pulse to a device which short-circuits the tuned circuit of the oscillation generator. A damped oscillation is periodically generated in a resonant circuit at 10 and is fed through a condenser to a load circuit, e.g. a piezo-crystal vibrator 12. The output from 10 is also fed to a delay network 31 and synchronizes a pulse generator 30 which gives delayed short pulses of a duration about equal to half the oscillatory period and applies them positively to the grid of a triode valve 15 connected across the generator 10. These pulses cause the valve to operate as a short-circuit, and cut short the damped train of oscillations. The crystal 12 may be used to transmit vibrations to a test specimen 14, irregularities in which will reflect the vibrations to an amplifier 35, the position of the irregularity being indicated on an oscilloscope 40 as in Specification 641,095.
Patent GB-176493-A (GB)
Abstract: 176,493. Rhodes, W. F. W., Rhodes, V. H., and Hardman, W. H. Dec. 7, 1920. Lantern gratings.-An anti-glare device for attachment in front of or behind the front lens or glass of the lamp comprises a cellular grating having a number of substantially square compartments and consisting of preferably corrugated strips a, which are slit laterally so as to engage with one another and are secured within a circular embracing-strip. The grating covers the whole or a portion of the lens and glass, and may be secured to the outside of the lantern body by spring clips a<2> or may be hinged and covered in front by a glass sheet. The grating may be arranged mainly on that side of the lens nearest to the approaching vehicles and the other side may have a few strips or may be masked by strips at the top part only. According to the Provisional Specification, the anti-glare device may be permanently fastened to the frame containing the lens or glass. The strips may be enclosed in a frame of similar strips fixed by spring clips to the lamp.
Patent GB-688602-A (GB)
Title: Improvements in or relating to insulated coils
IPC: H02K3/34
Filed: 1951-07-26
Abstract: A siloxane composition curable to a rubber comprises a paste made from 105 parts by weight of a liquid polydimethylsiloxane having a viscosity of 15,000 centistokes at 25 DEG  C., 100 parts by weight of TiO2 and 5 parts by weight of benzoyl peroxide. Curing takes place in two steps; firstly to a tacky stage by heating to 130 DEG  C. for 15 minutes, and secondly under a pressure of 50 pounds per square inch, at 200 DEG  C. for 10 minutes. Specifications 608,955 and 608,956 are referred to.