baber/WOPTO huggingface dataset:
Patent GB-245080-A (GB)
Title: Improvements in reduction gearing
IPC: F16H13/08
Filed: 1925-11-26
Abstract: 245,080. British Thomson-Houston Co., Ltd., (Assignees of Ross, E.). Dec. 27, 1924, [Convention date]. Friction gearing.-In reduction gearing of the kind in which the driving and driven members are interconnected by a system of balls freely mounted between races, one stationary and one attached to the driving member, and in which the driven member is actuated by the balls, the balls roll on one race about a radius equal to that of the balls and to the other race about a smaller radius. The gearing is applicable to variable electric condensers and like devices. One race 12 engages each ball at one point only and is secured by a nut 14 to the driving shaft 9 and the other fixed race comprises two co-axial parts 15, 17 with inclined bearing surfaces, the part 17 being .axially movable and pressed towards the part 15 by a spring 18 to hold the balls 11 firmly in the races. A cage 19 slotted to engage the balls and attached to the driven member moves with the balls as they move around the fixed race on movement of the shaft 9. The parts 15, 17 touch each ball at points 21 less than 180‹ apart on its circumference, the ratio of reduction of the gearing being increased by decreasing the angle between the bearing surfaces of the parts 15, 17. The movable vanes 5 of a condenser may be secured by a nut 8 to a hollow shaft 6, to which the cage 19 is attached, and through which the shaft 9 extends to an .operating knob 10. In a modification, the operating knob may carry a short shaft between which and an outer fixed race similar to the race 15, 17 the balls are mounted, a cage engaging the balls being attached to the shaft of a variable condenser with the races and balls situated between the vanes and the operating knob.
Patent GB-504305-A (GB)
Title: Improvements in or relating to compressed-gas operated electric switches
IPC: H01H33/12
Filed: 1937-11-02
Abstract: 504,305. Gas - blast switches. GENERAL ELECTRIC CO., Ltd., and GARRARD, C. C. Nov. 2, 1937, No. 29983. [Class 38 (v)] A compressed-gas operated electric circuitbreaker, in which the gas acts also to extinguish the arc formed between co-operating main contacts, has auxiliary isolating contacts in series with the main contacts, movement of a movable main contact to the circuit open position being arranged, after separation of the main contacts, to cause operation of the auxiliary contacts to the isolating position. When the circuit-breaker is to be opened the gas supply is connected to the main switch chamber 3 through aperture 10 by a solenoid operated valve (not shown). The movable contact rod 4, normally forced into engagement with the fixed nozzle shaped contact 1 by a spring 7, is thereby moved to the right by the gas pressure on a piston 5 secured to the contact rod 4, the arc being quenched by the gas blast through the nozzle contact and silencer 2 to atmosphere. As the moving contact 4 approaches its extreme open circuit position, an extension thereof, a rod 24, trips a spring-biassed pivotal catch 22 to release the pivotal moving contact 16 of the isolating switch 16, 18. A biassing device acting through a link 21 thereupon opens the isolating switch, and an auxiliary switch (not shown) controlled by the pivotal contact arm 16 de-energizes the solenoid actuated valve to stop the flow of pressure gas to the switch chamber 3. The spring 7 then closes the main contacts 1, 4. A spider 9 serves both to guide the main moving contact 4 and to connect it through the metallic portion 14 of the switch chamber to the fixed contact 18 of the isolating switch.
Patent GB-1009146-A (GB)
Title: Ring frame traverse device
IPC: D01H1/36
Filed: 1963-07-29
Abstract: 1,009,146. Poker guide. INSULATING FABRICATORS Inc. July 29, 1963 [Aug. 3, 1962], No. 30025/63. Heading D1D. [Also in Division F2] Guide bearings for a poker bar C of a ring frame each comprise (see Fig. 3) a circular portion A and circumferentially spaced, inwardly projecting bearing segments E defining passages D therebetween, the segments being constructed of a yielding synthetic polymeric material having a relatively low coefficient of friction (e.g. the substance known by the Trade Mark Teflon); preferably the whole of the bearing is of this material. As shown the bearings are mounted by screws 26 on flanges 11a, 11b of the spindle rail 11 which is mounted to be vertically adjustable on the frame 12. In an alternative form the segments E have greater length and outwardly directed flanges at their lower ends so that the segments may pass through the orifices 28, and snap into engagement with the lower surfaces of the spindle rail flanges 11a, 11b.
Patent GB-736334-A (GB)
Title: Improvements in or relating to electromagnetic sound recording and reproducing devices
IPC: G11B15/29
Filed: 1953-10-30
Abstract: 736,334. Change-speed belt gear. WEBSTERCHICAGO CORPORATION. Oct. 30, 1953 [Oct. 31, 1952], No. 30084/53. Class 80 (2). [Also in Group XXXVIII] A magnetic tape T of a sound recording apparatus (see Group XXXVIII) is driven at one of two speeds by either a shaft 19 or an enlarged part 23 on the shaft which is moved vertically, by a handle 26, to engage or disengage the part 23. The tape is pressed against the shaft by a spring-urged roller. The take-up reel 32 is driven from the shaft by a belt 34 which is kept taut by a spring-urged bracket 35.
Patent GB-964697-A (GB)
Title: Alkyleneboratoalkyl acrylates and methacrylates
IPC: C07F5/04
Filed: 1960-09-01
Abstract: The invention comprises compounds of formula: <FORM:0964697/C1/1> where R is the residue of an a ,b -ethylenically unsaturated monocarboxylic acid, R1 is an alkylene group providing at least two carbon atoms between the adjoining oxygen atoms, and R2 is a divalent hydrocarbon radical derived from a 1,2- or 1,3-glycol. R is preferably derived from acrylic or methacrylic acid.  They may be prepared by reacting a hydroxyalkyl ester of formula RCOOR1OH and a borate of formula: <FORM:0964697/C1/2> where R4 is hydrogen or a C1- 6 alkyl group; the borate may be prepared in situ from a 1,2- or 1,3-glycol and boric acid. The products may be polymerized or copolymerized (see Division C3).ALSO:Polymers are obtained from alkyleneboratoalkyl esters of unsaturated acids of formula: <FORM:0964697/C3/1> where R is the residue of an a ,b -ethylenically unsaturated monocarboxylic acid, preferably acrylic or methacrylic, R1 is an alkylene group providing at least two carbon atoms between the adjoining oxygen atoms, and R2 is a divalent hydrocarbon radical derived from a 1,2- or 1,3-glycol (for preparation see Division C2). Free radical catalysts, specifically peroxides and azo compounds, are used.  Copolymers with methyl and higher alkyl, e.g. lauryl, methacrylates are referred to.  The copolymers with higher alkyl methacrylates may be used as lubricant additives.
Patent GB-376595-A (GB)
Title: Improvements in butter and like dividers
IPC: A01J21/02
Filed: 1931-10-31
Abstract: 376,595. Moulding butter &c. by rotary-mould-table machines. BENZ, J. and HILGERS, W., (trading as BENZ & HILGERS), 246, M³nsterstrasse, Diisseldorf, Germany. Oct. 31, 1931, No. 30204. Convention date, Nov. 6, 1930. [Class 87 (ii).] Butter or other plastic material is divided into uniform portions by cutting off portions from a continuous stream, pressing said portions into uniform shape and rejecting in said pressing all material in excess of a given quantity. A stream of butter f is fed against a plunger i into a mould b, which is one of four similar moulds carried by radial arms on an intermittently rotating shaft, and is severed by a cutter h. The mould b is rotated to the second operating station where the butter is compressed between opposing plungers l, n, excess butter being squeezed out through apertures p in the plungers n. In the third station the butter is ejected by a plunger s on to a table v from whence it may pass to a wrapping device. The plunger n may emboss the butter with ornamental designs. According to the Specification as open to inspection under Sect. 91 (3) (a) the moulds may be stationary and the plungers may move past them. This subject-matter does not appear in the Specification as accepted.
Patent GB-847402-A (GB)
Title: A photographic enlarger masking frame
IPC: G03B27/58
Filed: 1957-09-26
Abstract: 847,402. Photographic masking frames. AGFA A. G. Sept. 26, 1957 [Oct. 18, 1956], No. 30225/57. Class 98(1) In an enlarger masking frame having two adjustable and two fixed blades forming a rectangular frame which can be brought down over an adjustable right angle paper stop, the adjustable blades have abutments which engage the edges of the photographic paper. As shown, the rectangular frame is hinged on a shaft 11 and the adjustable blades 4, 5 are moved by knobs 10 so that abutments 6 press the photographic paper against the right angle stop 1. The closing movement of the frame may bring about a slight inward movement of masks 4 and 5 so that the paper is pressed into position without it being necessary to turn knobs 10. Apertures 8 closed by spring flaps 9 enable the positions of the edges of the paper to be checked.
Patent GB-472454-A (GB)
Title: Improvements in or relating to foils or films of cellulose
IPC: B32B27/00
Filed: 1936-11-06
Abstract: To obtain a foil or sheet-like product having a crystalline appearance, a plurality of sheets of foil all of which or at least one of which has a basis of reconstituted cellulose are stuck together; the laminated product is roped, twisted, crushed or otherwise creased; and the wrinkled material is then smoothed, and may be used for decorative purposes in its laminated form or the combined sheets may be separated and used as single sheets. To prevent adjacent layers adhering during the roping operation, a layer of muslin, netting &c. may be interposed; but this provision is not necessary when the outer foils consists of reconstituted cellulose or indiarubber. Shellac or the adhesive described in Specification 370,913, [Group VIII], may be used for securing the foils together; or they may be secured at the edges as by sewing or binding. Dyes, pigments, tinsel, pearl flakes, silk or metallic threads and other effect materials may be incorporated in the laminated structure by adding such materials to the adhesive or applying them to the moistened surface of the foil. Dye solutions may be applied to the rough surface of the foil, the excess of colouring matter is then wiped off, and the foil so coloured laminated between grass plates to produce decorative articles.  The products obtained may be laminated or veneered on to wood, metals, leather, fabric &c. to form wall panels, table tops etc.; and the products may be used for pocket books, note-cases, wearing apparel, millinery parts &c., and also for upholstery and similar purposes. Specification 461,730 also is referred to.
Patent GB-790572-A (GB)
Title: Device for measuring the speed of an aircraft, particularly in the trans-sonic range
IPC: G01P5/175
Filed: 1955-10-24
Abstract: 790,572. Static pressure probes on aircraft. SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES DU NORD. Oct. 24, 1955 [Feb. 19, 1955], No. 30332/55. Class 4. A probe 1 having a static pressure detecting point 1a is mounted on a transonic aircraft fin 4 in a rearwardly directed position in order that the point 1a is situated in an undisturbed zone aft of the rearmost pressure wave 03 and substantially downstream of the turbulent wake zone of the aircraft over a range of speeds including 0À85-1À1 Mach.
Patent GB-262426-A (GB)
IPC: G04F7/06
Filed: 1926-11-30
Abstract: 262,426. Marchand, A. Dec. 4, 1925, [Convention date]. Stop-mechanism for watch balances comprises a heart-shaped cam 4 attached to the arbor 3 of the balance 1 and coacting with a springy member 6 which is operated by button 7 and linkage 8, 5. By this means the balance is always finally arrested in the position shown, ensuring a tension of the balance spring 2 sufficient to restart the watch automatically.
Patent GB-412827-A (GB)
Title: Improvements in and relating to toothed gearing
IPC: F16H55/08
Filed: 1933-11-01
Abstract: 412,827. Toothed gearing. PARSONS MARINE STEAM TURBINE CO., Ltd., COOK, S. S., and DOUGLAS, L. M., Turbinia Works, Wallsend-on-Tyne. Nov. 1, 1933, No. 30384. Drawings to Specification. [Class 80 (i).] A pair of involute gears have the teeth of one gear all-addendum and the teeth of the other gear all-dedendum, with a pressure angle lying between 22¢‹ and 30‹. If the all-addendum gear drives, engagement takes place during the arc of recess only. If the all-dedendum gear drives, the engagement is during the arc of approach only. The teeth may be helical at 30‹ to radial planes. One of the gears may be a rack.
Patent GB-248861-A (GB)
Title: Improvements in means for supplying electric current to wireless apparatus from direct-current supply mains
Filed: 1924-12-18
Abstract: 248,861. Baker & Sons, Ltd., F., and Clarkson, F. C. Dec. 18, 1924. Converting pulsating currents into steady continuous currents. - To minimize commutator ripple direct-current supply mains 3, 4 are connected to the high-tension terminals of wireless apparatus through leads 1, 2 which have condensers connected across them, choke coils 7, 8 being arranged in one or both of the leads and a variable shunt resistance 11 being provided across the leads on the output side of the choke coils. In the arrangement shown two condensers 5, 10 are inserted in parallel across the leads on the input side of the choke coils, an incandescent lamp or Neon tube 9 being arranged in one or each lead between the two condensers. A third condenser 6 is arranged across the leads between the choke coils and the shunt resistance 11. The shunt resistance may be varied by a slide 12. One or more other sliders 14, 15 adjustable over the resistance may be employed. A condenser 18 may be arranged in the earth connection from the wireless set. Specification 248,862 is referred to in each Provisional Specification and one of the Provisional Specifications describes 3 modification in which the position lead has a resistance in series at its output end and is provided with adjustable tappings for the hightension voltages of the set.
Patent GB-487654-A (GB)
Title: Psychrometric apparatus for direct reading of humidity
IPC: G01N25/62
Filed: 1937-11-05
Abstract: 487,654. Hygrometric apparatus. CRAPEZ, J. Nov. 5, 1937, No. 30443. Convention date, Nov. 5, 1936. [Class 97 (iii)] The humidity of the air is indicated by the angular movement of a dry bulb thermometer 2 necessary to bring the top of its thermometric column into alignment with a horizontal wire 17 which is mounted on a frame 14 and has been adjusted by a screw with a milled knob 12 until it passes through the top of the thermometric column of a wet bulb thermometer 1. The thermometer 2 is mounted on a pointer 3, which carries a block 4 sliding in a slot 5 in the base 10 and indicates the humidity on a scale 20. The weight of water per cubic metre of air is indicated by that one of a series of curves f which passes through the point of intersection of the wire 17 and a wire 24 on the pointer 3.
Patent GB-781423-A (GB)
Title: Steroid compounds
IPC: C07J75/00
Filed: 1953-12-17
Abstract: The invention comprises : (a) 3 : 17a -dihydroxy - 5 : 6 - dichloro - 20 - ketopregnane; (b) its 21-bromo derivative, and (c) its 21-acyloxy derivatives in which the 21-acyloxy group contains not more than 6 carbon atoms; (d) the preparation of (a) by hydrolsing a 3-acyloxy - 5 : 6 - dichloro - 17 : 20 - epoxy - 20-acyloxypregnane, which in turn may be prepared by the process of Specification 781,424; (e) the preparation of (b) by brominating (a), and the combination of this process with (d); (f) the conversion of (b) to (c) by treatment with an alkali metal salt of an aliphatic acid, or simultaneously or successively with an iodide salt and an alkali metal salt of an aliphatic acid, and the combination of these processes with (e); (g) the oxidation of (c) to a 3:20 - diketo5 : 6 - dichloro - 17a  - hydroxy - 21 - acyloxypregnane, and the combination of this process with (f); (h) the combination of (g) with the further step of converting the product to a D 4 - 3 : 20 - diketo - 17a  - hydroxy - 21 - acyloxypregnene by dehalogenation and isomerization; (i) the combination of (h) with the further step of hydrolysing the product with an alkali to produce D 4 - 3 : 20 - diketo - 17a  : 21 - dihydroxypregnene; (j) the oxidation of (a) to 3 : 20 - diketo - 5 : 6 - dichloro - 17a  - hydroxypregnane, and the combination of this process with (d); (k) the combination of (j) with the further step of converting the product to D 4-3 : 20 - diketo - 17a  - hydroxypregnene.  Process (d) is advantageously carried out in an aqueous alcoholic medium (e.g. with aqueous alcoholic caustic potash at room temperature or with an aqueous alcoholic solution of potassium bicarbonate at reflux temperature), (e) by means of a slight molar excess of bromine in an inert organic solvent (e.g. chloroform), preferably at about 40-55 DEG  C., (f) in acetone solution, (g) and (j) by means of chromium trioxide in a medium comprising sulphuric acid with or without acetic acid, and (h) and (k) using zinc (e.g. in an acetic acid medium at 40-80 DEG  C.) or chromous chloride as dehalogenating agent and sulphuric acid to effect the isomerization.  The alkali metal salt of an aliphatic acid used in (f) may be formed in situ from equivalent amounts of the acid and an alkali metal hydroxide or carbonate.  Examples illustrate processes (d) to (k) as applied to compounds in which all the acyloxy groups are acetoxy.
Patent GB-1104324-A (GB)
Title: Electrical capacitors
IPC: H01G4/18
Filed: 1965-07-19
Abstract: 1,104,324. Capacitors. UNION CARBIDE CORPORATION. 19 July, 1965 [20 July, 1964], No. 30620/65. Heading H1M. The dielectric of a capacitor, stated to show substantially invariable electrical characteristics over a wide temperature range, comprises a solid thermoplastic polyarylene polyether containing the repeating units O-E-O-E<SP>1</SP> wherein E is a dihydric phenol residue and E<SP>1</SP> a benzenoid residue having an inert electronwithdrawing group in at least one of the positions ortho or para to the bond linking the residue to the ether oxygen, both residues being bonded to the ether oxygens through aromatic carbon atoms. E may be a mono-, di- or polynuclear phenol residue optionally bearing inert substituents such as halogen, alkyl or alkoxy. Preferably E is a bisphenol wherein the nuclei are separated by -CO-, -O- -S-, -S-S-, -SO 2 -, or divalent organic radicals. In the E<SP>1</SP> residue the electron withdrawing groups may be -SO 2 -, -CO-, -CH 2 CH-, -SO-, -N=N-, -C 2 F 4 - or phosphine oxides linking two benzene rings or nitro, phenylsulphone, alkylsulphone, cyano, -CF 3 , nitroso or hetero-nitrogen substituents. The polymers are prepared by the reaction between alkali metal salts of a dehydric phenol and a dihalobenzenoid compound in an anhydrous solvent. Mixtures of monomers may be employed. The capacitor may be of the flat, stacked type or rolled. The polymer layer may be a free film or bonded to the electrode metal e.g. by casting the film or vapour deposition of the metal, or both techniques may be employed. The capacitor may be encapsulated with the same polymer, or with wax or epoxy resin.
Patent GB-174725-A (GB)
Title: Improvements in or relating to instruments for joining the ends of inner tubes for pneumatic tyres and like purposes
IPC: B29D23/24
Filed: 1920-10-30
Abstract: 174,725. Frost, W., and Frost &. Co., Ltd., H. Oct. 30, 1920. India-rubber, jointing; vulcanizing, cores for.-In apparatus for jointing indiarubber tubes of the type described in Specification 3221/06, the mandrel or mould or both are constituted by a flexible container filled with a fluid or a solid that will flow, such as sand, to distribute pressure equally. As shown, the tube 21 is passed through and bent back over a split, hollow, flexible mandrel 16 supported by a rigid ring 18, and filled with pressure.fluid, or a solid as sand, small shot, &c. The joint 22 is made and a split mould 10 capable of being heated is applied. If desired the surface 19 of the mandrel is the only flexible part, the ring 18 being then dispensed with.
Patent GB-1383108-A (GB)
Title: Apparatus for applying adhesive tape to an article
IPC: B31B50/86
Filed: 1972-06-30
Abstract: 1383108 Carrying handles LION FAT & OIL CO Ltd 30 June 1972 [2 July 1971 (2)] 30740/72 Heading A4G [Also in Division B8] Apparatus for applying adhesive tape to an article, for example to form a handle on a carton, Fig. 1, or for sealing purposes, comprises a conveyer (4) Fig. 3 (not shown), for intermittently moving an article, turntable 69 intermittently angularly displaceable in unison with the movement of the conveyer and adapted take tape up around its periphery, means 67 for cutting the tape into lengths, and means for lifting a length of the tape off the turntable and pressing it on to an article. To form a handle the tape has spaced lengths of opaque paper stuck to it and is cut between the lengths. The tape is held on the turntable by suction pads 82, 83, the cutter moving into a slit 87 provided in each pad 83. At the tape applying station a piston 62 engages a guide pin 76 extending upwardly through a slot 73 in the top of the turntable and mounted on a block having arms 77 which carries rolls 80 to press the tape ends against the carton. The tape is unwound from a reel 29 by a roller 38 being reciprocated while the tape downstream of the roller is held by clamps 57, 57'. The tape is correctly positioned on the turntable by photo tubes 51 detecting an opaque paper portion and actuating clamps 52. The conveyer 4 comprises a plate having slits through which rods protrude. The rods are mounted on a pair of horizontal beams, each beam being mounted on a pair of crank discs so that the rods are given a circular motion in a vertical plane.
Patent GB-435892-A (GB)
Title: Cooling systems for dynamo-electric machines
IPC: H02K9/06
Filed: 1934-10-27
Abstract: 435,892. Cooling dynamo-electric machines. ELECTRIC AUTO-LITE CO., Champlain Street, Toledo, Ohio, U.S.A. Oct. 27, 1934, No. 30928. Convention date, Nov. 20, 1933. [Class 35] [See also Group XXVI] A dynamo-electric machine is placed in a stream of air produced by a fan &c. and a portion of the stream is diverted through the casing of the stream by a second fan. The invention is described with respect for a lighting &c. generator for a motor-car, the first fan being the radiator fan of the car. Preferably the air on entering the casing takes a sharp turn to get rid of dust &c. Figs. 1 and 3 show such an arrangement, the stream of air from the fan 14 flowing over the casing of the generator 10 and being in part drawn through the casing by a fan 25 on the generator spindle, entering the casing by openings 58 at the end remote from the fan 14 and leaving by openings 59 at the other end. The fan 25 may be combined with the driving-pulley of the generator as shown in Fig. 5. The pulley consists of sheet metal discs 46, 47 secured to a hub 44 and the fan blades 53 are struck up from a sheet metal ring 51 secured to an extension 49 of the disc 47. The fan 25 may be at the end of the casing remote from the fan 14, and the air may enter the casing at the end near the fan 14, a flange being provided to cause the air to take the necessary sharp turn.