baber/WOPTO huggingface dataset:
Patent GB-796156-A (GB)
Title: Improvements in or relating to thermostatically operated valves for controlling air flow
Inventor: MARTIN-HURST WILLIAM FREDERICK
IPC: G05D23/02
Filed: 1955-05-26
Abstract: 796,156. Valves. TEDDINGTON AIRCRAFT CONTROLS, Ltd. Aug. 3, 1956 [May 26, 1955], No. 15261/55. Class 135. A thermostatically operated valve for controlling air flow comprises a housing la, 1b with air inlet port 2 and outlet port 3, wherein a bellows 5 mounted on a ported wall 4 carries a valve disc 6 engaging a seating member 7. A tube 14 formed of brass or stainless steel is secured at one end to the wall 4 and at the other end to a rod 13 of invar or similar material which extends through the tube 14 to engage with a valve 19. When the thermostat element 13, 14 is cold, contraction of the tube 14 opens the valve 19 to prevent any pressure being maintained in the bellows 5. Warm air entering the housing lifts the valve disc 6 to flow through the housing. As the thermostat element warms up the tube expands withdrawing the rod 13 and closes the valve 19 allowing pressure to build up in the bellows through the aperture 10 and move the disc 6 towards its seating, restricting the air flow. The progressive restriction afforded by the tapered needle 11 in the aperture 10 modulates the movement of the disc for a given thermal response of the thermostat element. With the removal of the housing 1b and the substitution of an outlet port 25 the valve may be made responsive to space temperature instead of air flow. In an alternative arrangement the thermostat element and its coacting valve is independent of the air supply valve and is connected thereto by a tube. The air supply valve disc may be lifted by the air flow as in Fig. 1 or may be held open by spring pressure and closed by pressure built up in the bellows when the thermostat valve is shut.
Patent GB-770728-A (GB)
Title: Improvements in or relating to process for preparing 1-benzamido-1-phenyl-3-piperidinopropane
Inventor: POHLAND ALBERT
IPC: C07D295/125
Filed: 1955-05-26
Abstract: 1 - Benzamido - 1 - phenyl - 3 - piperidinopropane is made by reacting 1-phenyl-3-piperidinopropanol with benzonitrile in the presence of concentrated sulphuric acid at a temperature of 30 DEG to 100 DEG  C., preferably between 50 DEG  and 60 DEG  C.  If desired, the reaction may be carried out in a solvent such as glacial acetic acid.  The product may be purified either via a crystalline salt such as the hydrochloride or by recrystallization of the free base.
Patent GB-369470-A (GB)
Title: Improvements in or relating to cans or the like metal containers
Filed: 1931-05-23
Abstract: 369,470. Cans &c. CONTINENTAL CAN CO., Inc., 100, East 42nd Street, New York, U.S.A.-(Assignees of Prahl, F. A. and O'Brien, F. J. ; 100, East 42nd Street, New York, U.S.A.) May 23, 1931, No. 15273. Convention date, Dec. 5, 1930. [Class 66.] To facilitate the insertion of the fingers to enable it to be removed from its attachment at 9 to the end of a can &c., parts at the handle end 10 of an opening key are bent, for instance as at 12, to lie away from the surface of the can end. Specification 292,876, [Class 66, Hollow-ware], is referred to.
Patent GB-640267-A (GB)
Title: Improved signal-translating stage for radio signalling
IPC: H03J3/06
Filed: 1947-06-10
Abstract: 640,267. Valve circuits for radio reception. HAZELTINE CORPORATION. June 10, 1947, No. 15286. Convention date, June 22, 1946. [Class 40 (v)] In a high-frequency amplifier or a frequency-changing stage positive feedback is used to balance out the inherent input conductance of the valve and negative feedback to provide damping on the input circuit which is constant over a range of frequencies and does not increase the circuit noise. As applied to a triode frequency-changer positive feedback which varies with frequency in the same manner as the transit-time input impedance is produced by means of inductance 18 inserted in the anode lead, in conjunction with the anode-grid capacity 21. A constant input conductance is obtained by negative feedback, also over capacity 21, and provided by the intermediate-frequency transformer, which behaves as a capacity 17 at the signal frequency. The arrangement may be used, Fig. 2 (not shown), in an inductively-tuned constant band-width preselector circuit of the type described in Specification 535,078. In a modified arrangement using a pentode or hexode valve, Fig. 3 (not shown), feedback is obtained over the screen to grid capacity from the screen circuit, which comprises inductance and capacity in series, the steady screen potential being applied over a choke. U.S.A. Specification 2,279,543 is referred to.
Patent GB-203052-A (GB)
Title: Improvements in electrical condensers
IPC: H01G4/04
Filed: 1922-05-31
Abstract: 203,052. Ditcham, W. T. May 31, 1922. Condensers comprise two sets of plates d, h immersed in a liquid dielectric, the insulators e, serving to insulate one set from the other, being arranged outside the Lquid. The plates dare mounted on rods c carried by metal bars b placed across the top of the container a, and the plates h are similarly mounted on rods g carried by metal bars f supported by the insulators e.
Patent GB-220108-A (GB)
Title: Improvements in or relating to holders or temporary binders for catalogues and the like
IPC: B42F11/00
Filed: 1923-06-13
Abstract: 220,108. Palmer, H. C., and Upton, J. B. June 13, 1923. Post files; clamping- devices; covers; sheets and cards. - In a loose-leaf binder, in which sheets, catalogues &c. are provided with open L-shaped slots for slidable engagement on transverse pins g mounted within the back e of the binder, the sheets &c. are locked on the pins by means of a stop h slidable in the back of the binder. The stop h comprises a T- shaped metal blank provided with a flanged head h<1>, a finger-piece h<2> and a slot h<3> sliding on a stud i, to which it can be locked by means of a screwed nut k. The sheets may be filed through the intermediary of slotted hinge pieces b having a metallic strip reinforcement c, as described in Specification 220,267.
Patent GB-536566-A (GB)
Title: Improvements in handles for percussion drills, jumpers or the like
IPC: B25G1/00
Filed: 1940-04-22
Abstract: 536,566. Percussive &c. tool holders. RAWLINGS, J. J., and RAWLPLUG CO., Ltd. April 22, 1940, No. 15443/39. [Classes 61 (i) and 124] In a tool holder for a manually or mechanically operated percussion drill, chisel, or the like, in which the tool is held in a slightly tapered axial hole 2 in one end of the holder 1, and a transverse hole 3 is formed at or adjacent the inner end of the hole 2 to allow an ejecting member to be inserted behind the tool, the lower wall 5<SP>1</SP>, 5<SP>11</SP> is in the form of an inverted V the apex of which is situated on the centre line of the holder. Preferably the outer wall 4 is substantially at right angles to the axis of the holder, and the hole 3 may be formed from three cylindrical holes, two of which are inclined relatively to the third. The edges of the ejecting member are inclined to correspond to the wall parts 5<SP>1</SP>, 5<SP>11</SP>.
Patent GB-261643-A (GB)
Title: Improvements in or relating to divisible rims for vehicle wheels
IPC: B60B25/20
Filed: 1926-06-18
Abstract: 261,643. Gilpatrick, E. W. June 18, 1926. Tyre attachments to rims.-The detachable side flange 5 is formed with holes to receive studs 3 projecting from the fixed arms part 1, and with slots 8 through which the heads of bolts 4 may pass when turned through 90‹ from the locking positions shown. The flange 5 is also formed with slotted lugs 9 to receive an operating- tool.
Patent GB-975551-A (GB)
Title: Improvements in or relating to automatic cigarette dispensers
IPC: A24F15/10
Filed: 1963-04-19
Abstract: 975,551. Cigarette dispensers. H.G. ROTT, [trading as SCHOELLER & CO., ELEKTROTECHNISCHE FABRIK]. April 19, 1963 [May 5, 1962], No. 15448/63. Addition to 893,194. Heading B8P. The automatic cigarette dispenser of the parent Specification is modified in that an auxiliary control rod 101 has a lower speed during its advance to the igniting device than during its return. The improvement is applied to an embodiment substantially as shown in Figs. 13-15 of the main Specification. When the pusher rod 3 is moved forward, rod 101, which is counted thereto by a spring 102, also moves and the pawl 30 which is now mounted on this latter rod engages a pin 31 on the control rod 32. The rod 32 is coupled to an escapement 35 by means of a pin 203 and thus the forward movement of the holding claw and cigarette therein, which is controlled by the auxiliary rod 101, is delayed. At the end of the forward motion the pusher rod is locked by the pawl 29, the pawl 30 is raised to clear the pin 31, and the control rod returns under the action of its spring. A pin 210 on rod 32 then contacts a switch assembly 211 and energizes first the lighting circuit and then an electromagnet 204. This causes an armature 205 to pivot upwards and a surface 205b thereon to release the pawl 29. Rods 3 and 101 then both return, their motion being controlled by a helical spring 7 and bellows 201 with an air bleed 202. Should the energization of electromagnet 204 fail, a rod 207 provided on the front surface of the dispenser is pushed to urge a lever 208 towards the armature so that it pivots upwards. The rod returns under the action of a spring 209.
Patent GB-529659-A (GB)
Title: Improvements in or relating to fluid metering valves
IPC: E03D3/04
Filed: 1939-05-24
Abstract: 529,659. Fluid-actuated valves. BAILEY, S. R., and HANDY FLUSH VALVE CO., Ltd. May 24, 1939, No. 15472. [Class 135] A liquid-metering valve of the kind claimed in Specification 452,616 has a movable actuator operatively connected with the relief valve and a trip device which, when the main valve has moved a pre-determined distance serves automatically to interrupt the operative connections between the actuator and the relief valve. The main valve carries a washer 19 adapted to co-operate with a seat 9 around the outlet 13 and is connected to a piston having cupleathers working in a liner 14 held in place by a detachable cap 16. The liner is spaced from the casing to leave an annular passage connecting the inlet 12 with the actuating chamber 10 by way of a restricted orifice 17. The valve member is provided with a chamber 20 connected by restricted orifices 21 with the chamber 10. The chamber 20 houses a spring-loaded tilting- disc relief valve 23 provided with a tubular stem 25 and having a telescoping extension 26 adapted to be engaged by a spring-loaded sliding member 31. This member works through a packing gland 33 and is operated by curved head 35 on an actuating handle 32 held in place by a cap 36. Specifications 5578/10, 281.211, [both in Class 135], 355,622, 368,985, 417,370 and 420,950 are referred to.
Patent GB-1501153-A (GB)
Title: Pharmaceutically active amines
IPC: C07C213/02
Filed: 1975-04-15
Abstract: 1,3,4-Trimethyl-1-(3,4,5-trimethoxybenzyl)-1,2,5,6-tetrahydro-pyrid ine chloride and N-methyl-N-(3,4,5-trimethoxybenzyl)-2,3-dimethyl-2,4-pentadienamine (formula I), which can be used as painkillers, are obtained by initially refluxing, in a first synthesis step, 3,4,5-trimethoxybenzyl chloride with 1,3,4-trimethyl-1,2,5,6-tetra-hydropyridine in an anhydrous solvent, from which reaction mixture 1,3,4-trimethyl-1-(3,4,5-trimethoxybenzyl)-1,2,5,6-tetrahydropyridine chloride is formed upon cooling. This compound is subsequently subjected, in a second step, to a degradation reaction by boiling it over a prolonged period in an aqueous solution of an alkaline metal hydroxide, giving the compound of the formula (I). <IMAGE>
Patent GB-865643-A (GB)
Title: Improvements in or relating to phase-sensitive electric circuit arrangements including relays
Inventor: HARRISON DONALD
IPC: H01H47/16
Filed: 1958-05-14
Abstract: 865,643. Electromagnetic relays. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 12, 1959 [May 14, 1958], No. 15576/58. Class 38 (5). In an A.C. phase-sensitive relay circuit arrangement, the relay has two magnetic circuits including respective electromagnets energized by A.C. signal and reference sources of the same frequency so as to respond to their relative phases. As shown, the armature 1 comprises two parallel magnetic members 2, 3 and is pivoted at 4. A signal source 8 energizes an electromagnet 7 with poles 5, 6 between the members 2, 3, and a reference source 12 energizes an electromagnet 11 with poles 9, 10 outside the armature. The relay may be damped to limit the effect of the alternating component of the armature torque so that the relay responds to the product of the current magnitudes and the cosine of their phase differences. Alternatively, the armatures of two such relays may be rigidly coupled together, the windings of the other relay being energized in quadrature so as to cancel out the alternating torque components.
Patent GB-751423-A (GB)
Title: Improvements in or relating to safety valves for steam and liquid pipes
IPC: F16K17/10
Filed: 1954-05-26
Abstract: 751,423. Valves. HAENISCH, L. May 26, 1964, No. 15584/54. Class 135. A safety valve comprises an apertured rotary disc 12 situated in a pipe line between a nozzle inlet plate 3 and a seating plate 11, both plates being provided with matching openings. The disc is located in a flange in the pipe along with an actuating pinion 13 to which it is geared. An excess of pressure in the pipe line acts through a hydraulic link on to a piston which, through levers and bevel pinions, drives the shaft of pinion 13. The valve is loaded by a weighted lever secured to the shaft of one of the bevel pinions.
Patent GB-1067558-A (GB)
Title: Surgical probes
IPC: A61B18/02
Filed: 1965-04-13
Abstract: 1,067,558. Surgical cooling devices. SPEM BLY TECHNICAL PRODUCTS Ltd., R. RUBINSTEIN and A. J. WALKER. April 12, 1966 [April 13, 1965; July 7, 1965], No. 15608/65. Heading A5R. A cryosurgical probe comprises a holder 11 for a probe element 12, a holder 1 for liquid nitrogen, heat conductors 11, 16, 15, 4 interconnecting the holders 1, 11 for conducting heat from the probe element and heating elements 20, 21 on the probe holder for raising the operational temperature of the probe element above that dictated by the liquid nitrogen. A stainless steel outer tube 5, the interior of which is sealed from the atmosphere, is evacuated and houses a liquid nitrogen container 1. Layers of aluminised plastic film (not shown) may be disposed in the evacuated space between the outer tube and the container. A copper block 4 in the container is in heatconductive contact with a silver rod 15 which is connected by silver strips 16 to a second silver rod 11. The forward end of the second rod 11 receives the probe element 12. The liquid nitrogen container is half-filled only, through a tube 3 which extends rearwardly from a point midway between the ends of the container to a fitting 27 for connection with a liquid nitrogen source (not shown). Heating elements 20, 21 on the second rod 11 are controlled to determine the temperature of the probe by a thermostatic device which operates in response to a thermocouple 22 (Figure 2, not shown) in conductive contact with the probe element. The thermostatic control may be overridden to permit rapid heating of the probe element. Activated charcoal 24 in the ends of the nitrogen container 1 adsorbs gases emitted by metal parts into the evacuated space.
Patent GB-591805-A (GB)
Title: Improvements in automatic cut-off devices for pipe lines
IPC: F16K17/32
Filed: 1943-09-23
Abstract: 591,805. Cut-off valves. WATERMAN. W. Sept. 23, 1943, No. 15635. [Class 135] An automatic cut-off valve for a pipe line is held 'against axial movement by means requiring the valve to be rotated through a predetermined angle by the action of an excess of flow on vanes carried by the valve, the holding means including surfaces on the valve and an anchor pressed together axially by the drag to produce a frictional resistance to rotation, variation in the drag arising from viscosity being balanced by corresponding variations in frictional resistance. The valve is normally held in open position by means of an anchor 19, Fig. 3, fitted with wings 20 engaging a shoulder 21, and with a head 24 having sector-shaped. lugs 28 which pass through corresponding recesses 29, Fig. 2, and rest behind shoulders 26 on a rearward, vaned extension 16 of the valve. Relative rotation between the anchor 19 and valve member 16 is normally prevented by a transverse member 18 which may be flexed or broken; the member is mounted in a slot in the anchor and engages lugs 31 on the valve member. The relative rotation is also resisted by the friction between the lugs 28 and shoulders 26 the engaging surfaces being inclined to a transverse plane at such an angle as to cause a varied frictional resistance to be produced by a varied drag arising from viscosity changes. Specification 569,367 is referred to.
Patent GB-107514-A (GB)
Title: Improvements in and relating to Endless-track Bands for Motor and other Vehicle Wheels.
Inventor: FLETCHER WILLIAM DAWSON
IPC: B62D55/04
Filed: 1916-11-02
Abstract: 107,514. Fletcher, W. D. Nov. 2, 1916. Slipping of wheels, preventing. - An endless band 2 envelopes the tyre cf the vehicle wheel 1 and is kept taut by the guide pulley 3 located in the plane of the wheel and urged away from the wheel by the spring 4 housed in the casing 5.
Patent GB-241134-A (GB)
Title: Improvements in apparatus for vulcanising rubber tyres
IPC: B29D30/06
Filed: 1924-07-17
Abstract: 241,134. Dehn, F. B., (Budd Manufacturing Co., E. G.). July 17, 1924. Vulcanizing by electricity.-A vulcanizing apparatus comprises an annular tyre mould, an induction coil surrounding the mould, a second induction coil surrounded by the mould, and means for supplying high frequency current to the two coils, thus heating the mould by inducing currents therein. A number of moulds 22 may be stacked in a cylindrical vessel 75 and compressed by a ram 76. Heat-insulating material 78, 79 may be placed between the moulds and the induction coils 71, 73.
Patent GB-331994-A (GB)
Title: Improvements in or relating to breech loading ordnance
IPC: F41A3/08
Filed: 1929-05-21
Abstract: 331,994. Vickers-Armstrongs, Ltd., and Hampton, E. R. May 21; 1929. Ordnance, adapting for miniature ammunition practice. - An aiming-tube C, for use with a parent gun A having breech mechanism of the screw-carrier type, is adapted for use with barecharge ammunition by replacing the usual obturator by one of smaller size which fits a cone-seat C<1> on the aiming-tube. The small obturator has an axial vent to enable the firing gear of the parent gun to be used with the usual vent-sealing tubes. The breech-screw of the parent gun is replaced by a locking member D engaging the interrupted threads on the breechchamber. The aiming-tube has a screwed or integral flange C<5> formed with interrupted threads also engaging the threads of the breech-chamber, and is centred and supported in the gun by a fixed collar C<6>, and by spring-pressed sliding collars C', C<9>. A catch E engages a screwed segment of the gun to fasten the aiming-tube.
Patent GB-804839-A (GB)
Title: Mixed polyesters
Inventor: AITKEN ROXBURGH RICHMOND
IPC: C08G63/16
Filed: 1956-05-22
Abstract: A polyester, suitable for use as a plasticizer, is the polyesterification product of 1 : 5-pentane diol and a mixture of 25 to 50 molecular proportions per cent of adipic acid and 75 to 50 molecular proportions per cent of glutaric acid.  Minor amounts of the glycol or dicarboxylic acids may be replaced by other glycols or dicarboxylic acids.  Polyesterification is preferably effected in the absence of oxygen.  The acids may be employed as their anhydrides, acid chlorides or alkyl esters and the glycol in the form of its acetate.  Esterification catalysts (e.g. zinc chloride) or ester-interchange catalysts (e.g. stannous chloride, litharge, zinc acetate, calcium acetate, antimony trioxide or tetrabutyl titanate) may be used.  The polyesters, which preferably have a viscosity of 10-5000 poises at 25 DEG  C., are suitable for the plasticizing of polyvinyl chloride; copolymers of vinyl chloride and vinyl acetate, unsymmetrical dichloroethylene, styrene and the esters, nitriles and amides of acrylic, methacrylic, fumaric or maleic acid; synthetic rubbers, e.g. chloro-butadiene and butadiene-acrylonitrile polymers; chlorinated vinyl chloride polymers; chlorinated rubber; and cellulose derivatives, e.g. nitrocellulose, ethyl cellulose or cellulose acetate.  The polyester may be mixed with vinyl chloride polymers or copolymers by milling the components together, as such, or in presence of an organic liquids which are swelling agents or solvents for one or both components.  Alternatively solutions of the two components may be mixed.  Fillers, pigments, other plasticizers, stabilizers or antioxidants may be added.  The plasticized compositions may be formed into shapes or spread or calendered on a substrate.  Examples disclose polyesters from (1)-(7) and (9)-(13) 1 : 5-pentane diol, glutaric acid and adipic acid, with or without methyl adipic acid, succinic acid, 1 : 2-propylene glycol, diethylene glycol, or a mixture of 1 : 2-propylene glycol and 2 : 2-dimethyl-1 : 3-propane diol; (8) 1 : 5-pentane diol, dimethyl glutarate and dimethyl adipate; (14) 1 : 5-pentane diol, diethylene glycol, dimethyl glutarate, dimethyl adipate and dimethyl phthalate.  In Example (15), 50 parts of each of the above polyesters, 100 parts of polyvinyl chloride and 4 parts of calcium stearate are milled together at 165 DEG  C. to effect gelation and a sheet obtained from the gel by pressing at 165 DEG  C. followed by cooling under pressure.
Patent GB-1031599-A (GB)
Title: Improvements in methods of and devices for hermetically closing thin-walled containers
IPC: B21D51/34
Filed: 1964-04-16
Abstract: 1,031,599. Seaming. HANS W. PFEIFFER. April 16, 1964 [April 18, 1963], No. 15911/64. Heading B3J. [Also in Division B8] A device for sealing a flanged lid 12 to the flanged mouth of a filled container 20 with an elastic sealing and opening ring 3 trapped by the lid flange, comprises a supporting member for the ring with the container mouth flange resting on it and a reciprocating pressure plate 9 for forcing the lid on to the container and ring, a concave conical surface on a fixed die pressing the lid flange inwards towards the container to secure it and trap the ring. The container body may be of plastics and the lid of thin metal. In one embodiment, the supporting member 2 is held by a spring 4 above the rim of the die 1 until pressed down by the plate 9, a cylindrical portion 15 of which engages closely within the lid flange 23. A surface 18 bends in the flange 23. An ejector plate 8 is provided. The support 2 is recessed at 25 to receive the pull tab 24 of the ring. In a simpler version, the upper end surface of the die has a V-shaped peripheral groove, the inner boundary part of which forms the support for the ring, the lid flange passing externally of the ring and boundary part into the groove to bend against its outer wall (Fig. 2, not shown).
Patent GB-542715-A (GB)
Title: Improvements in or relating to tooth brushes
IPC: A46B3/16
Filed: 1941-11-01
Abstract: 542,715. Tooth brushes. JACKSON, L. MELLERISH-. (Owens Staple-Tied Brush Co.). Nov. 1, 1940, No. 15995. [Class 19] A tooth &c. brush back or handle A is formed with a number of spaced-apart double rows of bores B arranged close to each other so that the tufts of bristles C bear against each other a short distance above the back and form in effect a single tuft, which is then trimmed to taper each of the sides so that the centre bristles are supported and reinforced by the shorter outer bristles. The end group has a third short row of tufts to provide additional reinforcement.