baber/WOPTO huggingface dataset:
Patent GB-1222931-A (GB)
Title: Improvements in microwave radiometers
IPC: H01P1/175
Filed: 1969-05-30
Abstract: 1,222,931. Attenuators; polarization rotators. THOMSON-CSF. 30 May, 1969 [31 May, 1968], No. 27625/69. Heading HlW. [Also in Division Gl] A heterodyne type comparison microwave radiometer for measuring microwave radiation at e.g. 60 gc/s. from an emissive body incorporates an aerial 1 receiving the radiations and supplying a corresponding first signal, a reference emissive source 2 supplying a second reference signal; a polarization multiplexer 3 receiving the first and second signals and delivering them together at an output with crossed polarizations to a gyrator 4 where direction rotation is controlled by an A.C. source 5 to be alternatively Œ #/4. One polarization mode in the gyrator output is suppressed by an absorbing fin 6 whose output is coupled to a second gyrator 7. The polarization direction of this gyrator is controlled by a D.C. source 6 to be (2k + 1) #/4 (k an integer or zero) and its output is passed to a mixer 9 which receives also the output from a local oscillator 10 (e.g. a klystron) to generate I.F. signals related to the first and second signals respectively. These I.F.'s are processed by I.F. and L.F. circuits 12 to provide an output corresponding to the amplitude of the received microwave radiations. The gyrator 4 and absorbing fin 6 operate together to suppress the unknown and reference signals alternately, so that the outputs from the system in opposite half-cycles correspond to each of these alternately and can be compared. The gyrator 7 is provided to prevent signals from the local oscillator 10 from being transmitted to the gyrator 4 and reflected as noise; the gyrator 7 polarizes any local oscillator signal into a direction such that it will be absorbed at 6. As shown in Fig. 4, the polarization multiplexer comprises a square section waveguide, matched to the circular section of the gyrator 4 by a junction 41. The gyrators 4 and 7 and the absorbing fin 6 are formed as a single assembly in a circular guide 44. Each gyrator incorporates a ferrite element 43, 73 and control winding 42, 72, while the absorbing fin is formed by a metallized mica strip at 45 degrees to the planes of the waves from the multiplexer 3. A final junction 71 matches the circular section to the rectangular section of the mixer 9.
Patent GB-469868-A (GB)
Title: Improvements in combined hot water supply and heating systems
IPC: F24H1/48
Filed: 1936-10-12
Abstract: 469,868. Heating water. HALLSTEN. E. V. Oct. 12, 1936, No. 27679, 27680, and 27681. Convention dates, Oct. 16, 1935, Aug. 6, 1936, and Sept. 7, 1936. [Class 64 (i)] In a combined hotwater supply and radiator heating system, a boiler 1 is connected by flow and return pipes 2, 4 to a hot water tank 3. The radiator system 8 which requires water of a lower temperature is connected to a shunt pipe 5, the capacity or heating surface of which is only a small fraction of the boiler 1. The shunt 5 is connected by an opening 12 to the lower part of the boiler and by a valved pipe 13 to the flow pipe 2. In an alternative form, Fig. 2 (not shown), the shunt 5 is arranged within a hot water jacket connected at both ends to the boiler, the upper connection being valve-controlled. In another form, Fig. 3 (not shown), the shunt 5 is in thermal contact with the outer wall of the boiler, and in another form, Fig. 4 (not shown), the shunt 5 is arranged in the combustion space in the boiler. In any form, the valve 13 may be arranged at the point 14 within the boiler. The heating surface of the shunt 5 is so dimensioned that the water only reaches the temperature required for the radiators, and the water circulates through the shunt at a higher rate than through the boiler. The temperature of the water supplied to the radiating system is regulated by the amount of hot water supplied to it through the valve 13. In another modification, Fig. 5 (not shown), heating of the water in the radiating system is effected by adding hot water from the boiler, or in Fig. 6 (not shown), such heating may be used in conjunction with direct heating. The shunt 5 may be cast integral with the boiler, and may occupy a segment of the annular space, or may project inwardly or outwardly from it.
Patent GB-1378264-A (GB)
Title: Trailer brake control device
IPC: B60T15/36
Filed: 1973-06-11
Abstract: 1378264 Trailer brake control assemblies BENDIX CORP 11 June 1973 [29 June 1972] 27713/73 Headings F2E and F2F Trailer brakes are actuated by a control assembly when the trailer overruns its towing vehicle, the assembly having a locking system, preventing trailer brake actuation, which is released by an actuator controlled by towing vehicle brake actuation, the assembly also having an energy storing device which operates upon locking system release to apply trailer brakes with a predetermined force in the absence of relative towing vehicle-trailer movement. A trailer brake master cylinder piston 20 is moved by a rod 44 which is locked against movement by balls 80 held by a sleeve 84. Upon towing vehicle brake application, the brake switch 102 is closed, actuating a solenoid device 90 to move the sleeve 84 rightwardly allowing the balls 80 to ride up a ramp 76 on the rod 44. The energy storing device in the form of a spring 68 moves the rod 44 to apply the predetermined brake force. The rod 44 is further moved by a rod 40 pivoted on a lever 26 which moves with regard to towing vehicle-trailer movement by means of pivots 30, 34. Fluctuations due to bumps &c., are damped out by a shock absorber 38 and a spring controlled lost motion connection 48, 50 between the rods 40, 44. The locking system release may be caused by operation of a switch 104 independent of the towing vehicle brake switch 102. The locking system is forcibly released under fail-safe conditions of high loading without the external actuation.
Patent GB-158688-A (GB)
Title: Improvements in the manufacture of cold drawn metal articles
IPC: C23C2/30
Filed: 1919-11-10
Abstract: 158,688. Shoemaker, R. J. Nov. 10, 1919. Drawings to Specification. Cased forms; tubes. - In making cold drawn metal tubes &c., the billet after pointing and pickling is plated prior to drawing by immersing in molten lead or alloy thereof through a supernatant molten flux consisting of zinc chloride or zinc chloride with 20 per cent of sodium chloride, so as to impart a highly polished non-oxidizable surface. The coating serves as a lubricant and prevents superficial hardening. If an annealed tube is required the drawn coated tube is then heated and cooled in a reducing atmosphere, and the tube then given a light pass through the draw-bench to restore the polish. In drawing a light walled tube, e.g. 24 or 26 gauge, which requires eight or more passes, the tube is plated a second time, usually at the end of the fifth pass. In the case of a boiler tube requiring an extra heavy lead coating, the tube is first drawn uncoated to within <1>/16 inch of required size and then annealed, pickled. and lead plated and finished with a light pass through a draw-bench.
Patent GB-734565-A (GB)
Title: Method and arrangement for continuous production of furfural
IPC: C07D307/50
Filed: 1953-10-09
Abstract: Furfural is produced from solid raw material containing pentose and pentosan by continuously introducing such raw material into a digester through an inlet at one end thereof, and causing it to pass in one direction through the digester, into which also steam at a temperature above 125 DEG  C. is introduced and in which acidity is maintained below a pH of 5 in such a manner that the total formation of furfural, in the main, is completed during the passage of the mixture through the digester, the said mixture, together with at least a considerable proportion of the furfural thus formed being continuously discharged into an expansion vessel in which the reaction residue is rapidly de-steamed so as to separate steam and furfural from the solid reaction residue, which is continuously removed out of the expansion vessel.  Suitable raw materials are wood chips, corn cobs, brushwood, straw, husks of cereals, and residue from olive pressings.  The steam should have a temperature of 125-250 DEG  C. (preferably 170 DEG  C.) and is injected into the raw material at or near the point of entry into the digester.  When wood chips are used, the average pH value should be approximately 2.5, and is attained by adding a diluted mineral or organic acid to the raw material.  A proportion of the furfural formed may be diverted from the digester before the reaction mixture has reached the outlet into the expansion vessel. Low pressure steam may also be introduced into the expansion vessel to extract any furfural remaining in the reaction residue prior to expulsion.  The mixture of furfural and steam may be separated by distillation or by condensation and decantation. Acetic acid, acetaldehyde and methanol are formed as by-products during the process.
Patent GB-1361909-A (GB)
Title: Storage-stable quick-curing epoxide resin moulding materials
IPC: C08L63/00
Filed: 1972-06-14
Abstract: 1361909 Epoxy resin moulding materials CIBA-GEIGY AG 14 June 1972 [15 June 1971] 27829/72 Heading C3B Storage stable moulding materials contain: (I) pre-adducts containing aromatic constituents and free epoxy groups formed from epoxy resins and polyamines; (II) preadducts containing free amino groups prepared from cycloaliphatic or heterocyclic polyamines and glycidyl compounds; and (III) mineral or organic pulverulent or fibrous fillers. I and II soften at 45-120‹ C. and melt 5-30‹ C. above the softening point and are present predominantly as discrete particles. I may be prepared by reacting a diglycidyl ether of bisphenol A containing at least 2 epoxide equivalents per kg. and a diamine, e.g. 4,4<SP>1</SP>-diaminodiphenylmethane. II may be prepared by reacting a low molecular weight polyglycidyl compound with the heterocyclic or cycloaliphatic polyamine, e.g. N-aminoethylpiperazine or 1,3-bis-(aminomethyl)cyclohexane, e.g. by heating at 50-200‹ C. in the absence of solvents. Uses.-Electrical insulation.
Patent GB-205990-A (GB)
Title: Improvements relating to screens adaptable for grinding and sifting machinery for grain and the like
IPC: B07B1/46
Filed: 1923-05-30
Abstract: 205,990. Barradell, L. May 30, 1923. Sieves and screens, forms and construction of. -Screens for grinding and sifting machines comprise transverse metal bars C, Figs. I, II, and interposed washers D strung on the rods E which are housed in grooves in the frame A. In another construction, Figs. IV, V and VI, the grooves F in the frame A are undercut and the washers G are correspondingly shaped, the longitudinal tie rods being omitted.
Patent GB-1428587-A (GB)
Title: Cigarette making machine
IPC: A24C5/42
Filed: 1974-06-24
Abstract: 1428587 Cigarette making appliance A KASTNER 24 June 1974 [7 Nov 1973] 27896/ 74 Heading A2C A cigarette making machine comprises a casing 2 and a hollow nipple secured to the casing to receive an open end of a cigarette tube, a tobacco compacting chamber 5 formed within the casing and an opening 4 in the casing providing access to the chamber 5, there being a tobacco compacting member 42 movable in the chamber to tobacco receiving (see Figs. 1 and 2) and tobacco compacting positions (see Fig. 3) and toggle link means consisting of a toggle arm 26 and first and second pairs of toggle links 30, 32 for moving the tobacco compacting member, there being a movable plunger 62 and attached injection spoon 66 for moving a wad of tobacco from the chamber through the nipple 68 and injecting the wad into the cigarette tube, an operator arm 14 for moving the plunger and spoon, and a cigarette tube retaining lever pivotable under spring action to retain the cigarette tube on the nipple during injection thereinto of a wad of tobacco there being a handle secured to a cam plate having cam surfaces, rotational movement of the handle resulting in rotation of the cam plate and movement of the operator arm, and a cam stud carried adjacent one end of the toggle arm and in contact with the said cam surfaces wherein rotation of the the cam plate imparts movement to the toggle link means, inner ends of the two pairs of toggle links being pivotally secured to pivot studs 31, 33 on the toggle arm, with outer ends of the first pair of toggle links being pivotally carried by pivot studs 37, 39 on the casing and outer ends of the second pair of toggle links being pivotally secured to pivot studs 38, 40 on the tobacco compacting member, characterised in that the casing of the tobacco compacting member, the toggle arm and toggle links are moulded plastics material, the pivot studs on the casing, the tobacco compacting memiber and the toggle arm also being of moulded plastics material there being circular bearing surfaces being of plastics material moulded integrally with the casing; moulded integrally with the tobacco compacting member for sliding engagement with circular bearing surfaces of plastics material, moulded integrally with the outer ends of the first and second pairs of toggle links, respectively, and circular bearing surfaces of plastics material moulded integrally with and adjacent inner ends of the toggle links of the first pair in sliding engagement with circular bearing surfaces of plastics materal moulded integrally with and adjacent inner ends of the toggle links of the second pair.
Patent GB-1324126-A (GB)
Title: Method and apparatus for separation of conductive materials by  endless movement of magnetic field
IPC: B03C1/247
Filed: 1971-06-15
Abstract: 1324126 Separation by induced electromotive forces VANDERBILT UNIVERSITY 15 June 1971 [15 June 1970] 27926/71 Heading B2J Particles having different electrical conductivities are classified by subjecting them to a magnetic field moving in an endless path whereby electromotive forces are induced in said particles corresponding to their conductivities, the magnetic field and its velocity being large enough to cause movement of the particles in the direction of said moving field. As shown, a plurality of electromagnets 25, 30 are rotatably mounted on carriers 23, 28 to rotate in circular paths above and below a fixed platform 13. The electromagnets are uniformly spaced on the carriers with respective upper and lower magnets in alignment. The carriers are synchronously driven by belts 32, 34 from a drive shaft 33. When particles to be classified are dropped into chutes 38, those which are non-conducting pass radially across platform 13 whereas those which are conducting are diverted to a degree depending on their conductivity (Fig. 2, not shown). Mutual separation of particles of copper, tin and glass is referred to. The electromagnets may be replaced by permanent magnets.
Patent GB-1393948-A (GB)
Title: Hand held drills
IPC: B23B45/00
Filed: 1972-06-15
Abstract: 1393948 Portable electric drills ROBERT BOSCH GmbH 15 June 1972 [16 June 1971] 27964/72 Heading B3C [Also in Division F2] In a portable-electric-drill the gears 15 are actuated by a lever 8 having a strap 7 rotatably mounted in a bearing 4 in the split casing 33, of the drill, the strap being split and bared at one end 12 so as to mount a pin 13 eccentrically. Pin 13 is located in a groove 14 in the gears, and in order to adjust the gears, the lever is pivoted so that a lug 9 is located in a released one of two notches in the casing. Strap 7 is held in the bearing by a resilient collar 9<SP>1</SP>.
Patent GB-430288-A (GB)
Title: Improvements in or relating to electric discharge tubes and similar electric devicescomprising caps
IPC: H01J5/54
Filed: 1934-10-01
Abstract: 430,288. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Oct. 1,<*>1934, No. 28052. Convention date, Oct. 4, 1933. Drawings to Specification. [Class 39 (i)] [See also Group XI] In a discharge tube or similar electric device which comprises a contact-carrying cap and which operates at a high temperature, the cap is moulded of heat-proof material and is then provided with a layer of hardening resin. The discharge tube may contain rare gas such as neon and the vapour of a difficultly volatilizable metal such as sodium, magnesium, cadmium, zinc, or thallium. A U-shaped tube is shown, secured rigidly by one end only to a cap carrying contacts. The heat-proof material may be asbestos-cement, gypsum, fireclay, cement or brick. The hardening resin may be phenol-, urea-, or thio-urea-formaldehyde condensation products, shellac, or the material sold under the Registered Trade Mark " Glyptal." The method of coating a cap made of a mixture of asbestos, cement and talc with a phenolformaldehyde condensation product is described.
Patent GB-423455-A (GB)
Title: Change-speed mechanism
IPC: F16H63/46
Filed: 1933-10-12
Abstract: 423,455. Controlling change speed gearing. RILEY, P., c/o Riley Engine Co., Aldbourne Road, Coventry. Oct. 12, 1933, No. 28191. [Class 80 (ii)] Transmission mechanism suitable for motor vehicles comprises a preselector control for a change-speed gear having two portions A and B, Fig. 1, in series, one of these portions being an " easy-change " device. The preselection is effected by movements of a hand-lever 24, Fig. 3, in perpendicular directions thereby stressing springs, and the selected changes are effected by depressing and releasing a pedal 35 which may be the main clutch pedal. The change-speed gearing shown in Fig. 1 has three pairs of constant-mesh gears and yields four speeds corresponding to the changes two and two of four dog clutches 11, 12 and a coupled pair 40. The easy-change character is derived from a tail or isolating one-way clutch 46. The easy-change character of a form of gearing shown in Fig. 1 of Specification 423,454 is derived from the frictional character of the clutch pair 23. The clutches 11, 12, Fig. 1, are brought into action by being moved right singly by separate forks 13, 14, Fig. 5. The pair 40 is moved two ways by a single fork 39, Fig. 4. The forks 13, 14 are pressed right of Fig. 3 by separate springs 15 and each fork has an arm 21 and pin 16. In the neutral position shown, the pins 16 are pressed by the springs 15 into locking notches 18 in a transversely movable selector bar 17 connected through a lever 29, rod 27, two springs 23 and a cylinder 26 to a rectangular arm 25 on the lever 24. The fork 39 is connected through a stem 37, Fig. 4, and two springs 38 to the heel of the lever 24. The pedal 35 is geared to a pair of opposite cranks 32, Fig. 3, connected to slide two bars 19, 30 in opposite directions. In the released position shown, two notches 36 in the bars 19, 30 are out of line so that the stem 37 cannot be moved into either. To select a speed change, the lever 24 is moved, say, clockwise of both Figs. 3 and 4. The cylinder 26 rises and stresses a spring 23 which tends to depress the selector bar 17. A spring 38 is stressed which thrusts the stem 37 against the bar 30. To effect the change, the pedal 35 is depressed and released. The depression causes two shoulders 20 on the left-moved bar 19 to lift the pins 16 out of their lock notches 18 so that the selector bar 17 shoots down to bring a slot 22 opposite the upper pin 16. At the same time, the stem 37 slips into the notch 36 in the bar 30. Release of the pedal causes the pin 16 of the fork 14 to slip into its slot 22 so that that fork is operatively moved by its spring 15 to engage the clutch 12 while the other clutch 11 is held out by the lower pin 16 engaging the face of the selector bar. At the same time, the leftmoving bar 30 carries the stem 37 and fork 39 with it to clutch the gear 41 to the driven shaft 47. The selector bar 17 has a lower slot 22 for the pin 16 of the other fork 13.
Patent GB-847057-A (GB)
Title: Improvements in and relating to zeolites
IPC: C01B39/02
Filed: 1958-09-03
Abstract: A synthetic crystalline zeolite of composition: 0.95 \sB 0.15 K2O:Al2O3:2.05 \sB 0.3 SiO2:0-3 H2O having a specified characteristic X-ray powder diffraction pattern and designated zeolite F, is prepared by forming a potassium aluminosilicate mixture of composition, expressed as oxides of K2O/SiO2 from 1.4 to 4, SiO2/Al2O3 from 1.0 to 3.0, H2O/K2O from 10 to 20, and maintaining such mixture at 25 to 120 DEG C. until crystallisation of the desired zeolite occurs.  The potassium zeolite so formed may be exchanged with the following cations: lithium, sodium, rubidium, caesium, magnesium, calcium, strontium, barium, hydrogen and ammonium; aqueous solutions containing the desired cations are normally employed and the exchanging solution preferably has a pH between 5 and 12.  Thus a hydrogen exchange may be effected with a dilute acid solution or sodium, lithium or ammonium or magnesium exchange may be effected with chloride solution.  The zeolite may be activated by partial dehydration at temperatures of about 250 DEG C. and atmospheric or reduced pressures or by maintaining the zeolite at room temperature under vacuum.  The zeolite may be employed as an adsorbent, if desired a pelleted in admixture with clay.  It will function as a selective adsorbent to separate small polar molecules from mixtures with other materials.  The adsorption characteristics of the potassium form of zeolite F for water, carbon dioxide, ammonia, sulphur dioxide, ethylene, methanol and oxygen are given and the separation of water from oxygen or ethylene is referred to.
Patent GB-755502-A (GB)
Title: Reel for magnetic tapes
IPC: B65H75/28
Filed: 1952-11-10
Abstract: 755,502. Bobbins. LOEWE OPTA AKT.- GES. Nov. 10, 1952 [Nov. 13, 1951], No. 28262/52. Class 120 (3). [Also in Group XX] A tape-carrying reel which may be of transparent material comprises a hollow body or core at a portion of the circumference of which a guide leads into the body and forms a support against which the tape end is pressed in such manner that the pressure increases when the tape is drawn outwardly by means which may be lifted for insertion or removal of the tape end. As shown in Fig. 1, the end of a tape 9 inserted through a slot 3 is held against a surface 4 by a resilient cylinder 5 which is fastened by means of a stirrup 6 to a leaf spring 7 anchored at 8; the tape may be released by pressing back the spring 7 with a finger inserted through a hole 10; the support 4, and spring 7 having a portion 11 carrying the cylinder 5, may be in one piece, Fig. 2. In Fig. 3 a clamping device or wedge 13 carried on a spring 7 presses the tape end against a supporting wall 4 or 4<SP>1</SP> of a triangular tape-inserting slot 3. As shown in Fig. 4 an elastic head 14 or a rubber cylinder (not shown) is carried on a pressing part 12 of the tape-inserting slot.
Patent GB-707677-A (GB)
Title: Improvements in percussion drills
IPC: B25D11/06
Filed: 1951-12-03
Abstract: 707,677. Percussive drills,. CRAIG, E. Dec. 3, 1951, No. 28337/51. Class 124 A percussive drill, having a rotor on which is mounted a hammer which strikes a tappet, has the hammer mounted in a cage rotatably supported in the rotor, means to rotate the cage in a direction opposite to that of the rotor, and means for locking the hammer for movement relative to the cage immediately after the tappet has been struck. As shown, a cage 22 is mounted for rotation relative to a rotor 13 which is supported on a drive shaft 21. A gear 25 on the cage meshes with an internally toothed ring 24 mounted on the machine casing so that rotation of the rotor in one direction causes rotation of the cage in the opposite direction as described in Specification 707,678. The cage comprises a cylindrical casting having a groove 26 in which is located a hammer 27. A locking member 32, Fig. 3, supported in a recess 31. has a tooth 36 which engages with a stop 37 on the hammer and prevents movement away from the striking face 30. The locking member is so arranged that, immediately after impact of the striking face 30 with the tappet 5, it moves into the position shown in Fig. 4, with the face 35 preventing movement of the hammer away from the tappet. As the cage revolves the locking member falls into its recess and allows the hammer to take up its position prior to delivering another blow.