baber/WOPTO huggingface dataset:
Patent GB-598724-A (GB)
Title: Rotary pumps
IPC: F04C14/00
Filed: 1945-09-07
Abstract: 598,724. Rotary pumps. MILES, C. W. Sept. 7, 1945, No. 23078. [Class 110 (ii)] The stator is formed internally with a helical groove which is engaged by a pair of toothed rotors which are supported diametrically opposite each other by a shaft ; the rotors have their axes directed transversely with respect to the shaft and equi-distant therefrom. Two cylindrical members 38a, 38b are journalled within the portions 11, 12 of the stator casing, with their frusto-conical surfaces 45 mating with similar surfaces 15 formed on the inner periphery of the stator. The driving shaft is in the form of two segmental parts 32 having projections 33'and defining a slot 34 between them. The latter is in alignment with corresponding slots 47 in the members 38a, 38b ; and shroud plates 48, of substantially T-shape, extend through the aligned slots. A pair of toothed rotors 39a, 49b are housed within the slots in each member 38a or 38b and mesh with helical grooves 52 formed in the conical surfaces 15. The rotors 49a, 49b are supported only by their peripheral contact with the shroud plates 48, which may be grooved as at 50 ; the central aperture in each rotor is for convenience in manufacture only. A thrust rod 37 is attached to each shaft member 32, and a compression spring 39 extends between an abutment plate 40 and the adjacent member 38a or 38b. The member 38b has recesses 53 engaged by driving teeth 31 on a member 27. The latter is journalled in the stator portion 12 by means of bearing lands 28, and is driven through a gear-wheel 29. Fluid enters two annular inlet ports 16 through ducts 19, 20, and is delivered to an annular delivery port 17 formed by the frusto-conical surfaces 46, 56, and thence to a delivery duct 23. During pumping, the rotor teeth act as pistons to force the fluid along the grooves 52, a certain amount of compression taking place as the result of the taper of the conical surfaces 15, 45. Excessive pressure forces the members 38a, 38b apart against the action of the springs 39, thereby unsealing the conical surfaces' 15, 45 to place the delivery port 17 into communication with the inlet ports 16. According to the Provisional Specification, each gear-wheel may be in mesh with an eccentric internal gear for shrouding purposes. The gear-wheels may be replaced by annular discs each carrying radially extending plungers, the outer ends of which are shaped to coact with the helical groove. whilst their inner ends coact with a fixed cam, in the form of an eccentric, in the interior of the annular disc. The plungers may be replaced by balls.
Patent GB-620569-A (GB)
Title: Improvements in or relating to variable speed control systems
IPC: H02P29/00
Filed: 1945-09-07
Abstract: 620,569. Fluid-pressure servomotor-control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Sept. 7, 1945, No. 23124. Convention date, Sept. 7, 1944. [Class 135] [Also in Groups XXVI and XXXV] In a system for producing a constant shaft speed, a variable speed driving device is coupled to an adjusting mechanism which is controlled by a fluid-pressure servomotor subjected to electrical adjustment by a speed governor, associated with the constant speed shaft, and responsive to the shaft load. In the embodiment shown, the alternator 10, driven by an aircraft engine through a variableratio transmission 12, is in parallel on the busbars A, B, C, N, with a second similarly driven alternator 10<SP>1</SP>. The gearing 23, associated with alternator 10, spins the mass 19, supported in member 18 and rotatable angularly therein, against a restoring spring, as the alternator speed changes. The push-rod 39 engages with mass 19 and is displaced vertically as the mass 19 turns about its transverse axis with changing alternator speed. The lower contact 40, of contacts 40, 41 is engaged by the upper end of rod 39 and at the datum speed the mass 19 inclines at 45 degrees to the vertical and the contacts 40, 41 barely touch. The contacts 40, 41 are in series with battery 88 and a solenoid 81 which regulates the position of arm 83 against tension spring 85 and thus controls the opening of poppet valve 86, Fig. 5. The latter controls the movement of the slide valve 63 which in turn controls the admission of fluid to the cylinder 57 to effect movement of the piston 58, which determines the adjustment of the speed ratio of the variable-ratio transmission 12, through lever 56. Capacitor 89 and resistor 90 prevent sparking and radio interference. To produce a drooping speed-load characteristic for parallel operation, torquemotor assembly 99 provides a proportionate generator-load-response means which rotates the shaft 46, supporting the contacts 40, 41 against restoring springs. Laminated members 103, 104 on opposite ends of shaft 46 rotate between the poles of stator core assemblies 100, 101 respectively. Potential coils 105, 106 wound on cores 100, 101 are connected in series, between line and neutral, with capacitor 107 and resistor 108 to bring the potential coil current in phase with the line voltage. With increasing load the shaft 46 will rotate to move contacts 40, 41, vertically upwards and away from push-rod 39, thus separating them, with the consequent operation of the servo system to reduce the alternator speed until the rod 39 again attains a height sufficient to recommence the hovering condition between contacts 40, 41. The speed setting of the device is altered by the tapping 113 of potentiometer 112. Tapping 113 may be moved manually or by automatic synchronizing means.
Patent GB-235763-A (GB)
Title: A paper roll container
IPC: B65H35/00
Filed: 1924-10-02
Abstract: 235,763. Gibson, H. W., Ward, O., and Gibson, W. Oct. 2, 1924. Roll holders.-A container for rolls of paper, e.g. wax paper, wrapping paper or paper towelling comprises a stand 25 carrying a sheet metal &c. tuba 1 closed at one end by a removable dished cap 10 with a hemispherical extension 13 engaging in a longitudinal bore 26 of the roll 6, and at the other end by a similar fixed cap. The tube 1 has one edge strip 22 arranged to overlap the other, leaving a space 21 through which the paper can be led, the strip 22 pressing elastically on the paper, and providing an edge against which the paper can be torn when the required length has been withdrawn. An aperture 24 is provided for manipulating the paper to cause a sufficiently wide strip to protrude for it to be grasped.
Patent GB-702378-A (GB)
Title: Apparatus for determining the cooling power of quenching baths
IPC: C21D1/63
Filed: 1952-09-17
Abstract: 702,378. Measuring temperature co-efficients. RIV-OFFICINE DI VILLAR PEROSA SOC. PER AZIONI. Sept. 17, 1952 [Sept. 20, 1951], No. 23363/52. Class 97(3) [Also in Group XXXVIII] Apparatus for determining the " cooling speed/ temperature " characteristic of a quenching bath 1 comprises a silver ball 2 in which is embedded a thermocouple, the ball being plunged into the bath after preheating. The output of the thermocouple is fed via an amplifier 3 to firstly another amplifier 5 to control the movement of a chart 7 in one direction A in accordance with the bath temperature, and secondly through a differentiating circuit 9 and amplifier 8 to control the movement of a pen 11 moving over the chart 7 in a perpendicular direction B in accordance with the rate of change of temperature, i.e. the cooling-speed.
Patent GB-461199-A (GB)
Title: Improvements in voltage relays
IPC: H02H3/027
Filed: 1935-08-20
Abstract: 461,199. Induction relays. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 20, 1935, No. 23390. Convention date, Aug. 23, 1934. [Class 38 (v)] [Also in Group XXXV] For controlling the tap-changing switch of a transformer operated by a reversible motor a relay has an adjustable time delay to prevent a tap change until the voltage variation exceeds half the voltage-difference between tappings, and the time delay is an inverse junction of the voltage variation, giving quicker response to large variations. A shaded-pole magnet 10 connected across the circuit drives a connecting disc 9 against the constant torque of a weight 11 or its equivalent. The time delay is provided by an adjustable magnet 14 and by a weight 21 adjustable on a radial arm on the relay shaft. The contact element 15 driven by the shaft has, normally midway between contacts 16, 17, with which it co-operates to drive the motor 5 in a suitable direction to effect correction of a voltage variation. The torque of the weight 21 increases with the displacement of the contact 15 until the weighted arm passes a horizontal position.
Patent GB-318730-A (GB)
Title: Improvements in fittings for gauge glasses
IPC: G01F23/02
Filed: 1928-08-14
Abstract: 318,730. Stove, A. E. Aug. 14, 1928. Gauge glasses.-The fittings b into which a gauge glass a is secured, are each provided with an annular flange d having two diametrically opposite gaps, and one side of the flange is inclined as at e. A locking ring h, Fig. 4, is provided with two lugs i which pass through the gaps, and the ring is then turned so that the lugs engage with the inclined faces of the flanges, and the ring g is compressed. The locking ring is provided with a recess for a bearing ring k retained by set screws l. The usual screwed plug at the top of the fitting b is replaced by a cap o having lugs p adapted to engage with shoulders n. A disc q with projecting stud r is mounted in the cap o.
Patent GB-795681-A (GB)
Title: Improvements in and relating to securing means for couplings for hoses, pipes or the like
Inventor: STEER-WEBSTER VASSAL CHARLES
IPC: F16L37/34
Filed: 1955-08-15
Abstract: 795,681. Pipe couplings. AVIMO, Ltd. Aug. 14, 1956 [Aug. 15, 1955], No. 23403/55. Class 99(1). A locking device for a bayonet type joint comprises a spring-pressed manually retractable member shown as a sleeve 6, Fig. 1, on one part of the joint engageable with a complementary member on the other part, Fig. 2, the member 6 being angularly displaced relatively to the bayonet parts and brought into locking engagement by the relative rotation involved in uniting the bayonet parts. As shown, a sleeve 4 rotatable on a socket 1 carries studs 5 engaging bayonet slots 11 in the casing 10 of a spigot 8, and the sleeve 6 has a pin-and-slot connection 6b, 4b with the sleeve 4, is retractable against the action of a spring 6a and carries detents 7 which engage the entrances of the slots 11 when the sleeve 4 has been turned through an angle of 90 degrees. In a modification (not illustrated), the pins 5 are carried directly by the housing of the socket 1, and the locking sleeve is mounted for axial displacement directly on the housing. Automatically operated valves 2, 9 are unseated by contact with one another so as to open a flow through the coupling when the coupling units are connected and are mounted in the socket and spigot respectively, and a conical surface on the valve 2 effects a seal with a flared part 8a of the spigot 8. In Fig. 4 (not shown), the valves are omitted. Specification 771,968 is referred to.
Patent GB-260724-A (GB)
Title: Improvements in or in connection with valve seats
IPC: F16K1/42
Filed: 1925-09-19
Abstract: 260,724. Axt, F., and Engineering Tools, Ltd. Sept. 19, 1925. Seats.-The seating 12 of a lift valve is secured in the cross wall or partition 14 of the valve casing by means of a metal ring 16 having the same coefficient of expansion as the cross wall. The fastening ring 16 has the outer face coneshaped at one end, as shown, or is tapered for its whole length and is forced or pressed within the valve seat from its inner end. A tool for forcing the securing ring 16 within the valve seating 12 for securing it in its position in the casing, as shown, comprises spring prongs 21 which are expanded by a cone 25 so as to engage under the valve securing ring 16. A flange 28 carries a depending tube 27 which abuts on the seating 13, and the ring is forced within the seating by manipulating the nut 26. The seating 12 is preferably of rustless steel.
Patent GB-254564-A (GB)
Title: Method of and apparatus for compressing and otherwise treating fluids
IPC: F04C19/00
Filed: 1925-09-19
Abstract: 254,564. Carrier, W. H., and Carrier Engineering Corporation. Sept. 19, 1925. Centrifugal pumps. - Gas mixtures are passed through compressors which operate by means of a rotating body of liquid. A number of impellers is employed arranged in series and the liquid is adapted to combine with an ingredient of the gas mixture, so separating it from the remainder. The pump spindle 13 is preferably arranged vertically and is recessed to receive the end of the motor spindle 12, the coupling being secured by a cross pin 14. Two impellers 15, 76 are shown working in separate casings 56, 87 ; the impellers are of the same type and their eccentricities are oppositely disposed to balance the lateral pressures. The upper impeller 15 has blades 18 extending radially from the hub 17 on a sleeve 16 the, end of which is threaded and provided with a nut 21 and locking nuts 22, 24 so that the position of the impeller may be adjusted. A shroud 62 on the blades rotates in a recess in the bottom of the casing. A pipe 45 conducts vapour or a mixture of liquid and gas to the inlet chamber 42 from which it passes through the port 48 to the impeller. The discharge port 59 leads to the chamber 43 and the discharge pipe 47. A hole 52, Fig. 9, in the pump top conveys liquid from the pipe 51 to the impeller space when the pump is operating above atmospheric pressure, but it may be omitted when the pump is used for maintaining a vacuum. The lower impeller 76 is arranged similarly to the upper one 15, and the discharge pipe 47 is connected to the inlet pipe 66 of the lower pump through a cooling pipe 65, Fig. 1. The whole apparatus consisting of pumps and cooler may be immersed in liquid in a tank 68. The gas or vapour is compressed in the first stage of the pump and is heated by the compression; it is cooled as it passes to the second stage and is mixed with the liquid pumping medium which may be supplied from the liquid in the tank. Where the pump withdraws air from a refrigeration system employing a volatile refrigerant it is convenient to pass some of the refrigerant through the pump as pumping medium. The liquid medium may be selected to remove a gas, liquid or vapour from other gases by dissolving or combining with it.
Patent GB-1377833-A (GB)
Title: Systems for testing insulating or dielectric material
IPC: G01R31/12
Filed: 1971-11-22
Abstract: 1377833 Testing insulators or dielectrics F C ROBINSON & PARTNERS Ltd 22 Nov 1971 [21 Aug 1970] Divided out of 1377474 Heading G1U A system for testing a specimen of an electrical insulating material or a dielectric, is characterized in that a D.C. ramp voltage Fig. 3 (not shown), is applied to the specimen, this being obtained by rectifying a ramp modulated sine wave Fig. 2. The system is preferably combined with a recording arrangement as described in the parent Specification1377474 in which the value of the D.C. voltage is recorded at that instant when a discharge occurs within the specimen. An h.f. oscillator (111), Fig. 1 (not shown), is modulated by a ramp generator (114) and feeds a transformer (116), the secondary of which is connected to a voltage multiplier (117) providing the desired D.C. output. The ramp generator may provide a triangular wave in which case the extinction voltage may be recorded.
Patent GB-1341626-A (GB)
Title: Apparatus for liquid development of a latent electrostatic image
IPC: G03G15/10
Filed: 1971-04-19
Abstract: 1341626 Liquid developing FUJI PHOTO FILM CO Ltd 19 April 1971 [10 March 1970] 23550/71 Heading G2H An electrostatic latent image bearing web 27 is fed past two or more developing electrodes 27 in developing liquid 39, the spacings between the electrodes and web decreasing in the direction of web travel. It is stated that by thus increasing the effect of the electrode during development, background, halo, edge effect and streaking are reduced. As shown, guide flanges 28-31 gradually reduce in size to bring the web progressively nearer to roller electrodes 20. Endless drive belts encircling electrodes 20 and drive rollers 32-35 may also act as electrodes.
Patent GB-805523-A (GB)
Title: Local anesthetic composition and preparation thereof
IPC: A61K31/16
Filed: 1956-07-31
Abstract: An aqueous composition, suitable for parenterol injection to produce local an sthesia and controlled xerostromia in the oral cavity, comprises an aqueous solution of a local an sthetic containing also an alkantheline in the amount of 1-50 mg. per ml. of said solution. Alkanthelines are defined as being quaternary ammonium salts of alkamine esters of 9-xanthene-carboxylic acid having the structural formula: <FORM:0805523/VI/1> where the lower alkyl groups have from 1 to 4 carbon atoms and may be the same or different, and An is a non-toxic anion, e.g. chloride, bromide or sulphate.  Preferred compounds are methantheline bromide (2-diethylaminoethyl-9-xanthene carboxylate methobromide) or propanthaline bromide (2-diisopropylaminoethyl-9-xanthene carboxylate methobromide). Suitable local an sthetics are procaine, tetracaine, butathamine, propoxycaine, lidocaine, hexylcaine, and 2-diethylaminoethyl-3-amino-2-(n-butoxy) benzoate.  The concentration of an sthetic in the solution is from 0.5 to 4 per cent by weight, and the solutions may also contain vasoconstrictors, e.g. hydrochloride or tartrate of epinaphrine, lero-arterenal and "Nordefrin" (Registered Trade Mark), and preserving agents.  The compositions may be prepared by simply dissolving the appropriate amounts of active ingredients in water.
Patent GB-930466-A (GB)
Title: Improvements in or relating to the treatment of arsenical drosses
Inventor: GRAY PHILIP MALCOLM JAMES
IPC: C22B7/04
Filed: 1960-07-06
Abstract: Arsenical drosses arising from the blast furnace smelting of zinc and lead are leached with molten lead at 500-650 DEG  C. for 5-30 minutes to render them capable of being handled without major evolution of arsine.  Evolution of arsine from the treated dross is further reduced by mixing the latter with 2-10% of water over a period of 20-60 minutes.  Yet further reduction in arsine evolution is obtained by mixing the arsenical drosses with an approximately equal amount of non-arsenical dross; the mixing may be done before the lead leaching stage, or the arsenical and non-arsenical drosses may be added alternately to the lead bath.
Patent GB-615392-A (GB)
Title: Improvements in or relating to electric heaters for burning off paint and the like
IPC: B44D3/16
Filed: 1946-08-08
Abstract: 615,392. Electrically heated paint removers. McDONALD, T. Aug. 8, 1946, No. 23594. [Class 39 (iii)] An electric heater for burning off paint comprises a casing 3 having an open side 4 and a handle 5, a heating element 6 being disposed in the casing. The open side 4 of the casing 3 is adapted to be applied to the paint to be removed, a reflector 7 of similar but smaller shape than the casing 3 surrounding the heating element 6 and serving to concentrate the heat at the opening. The casing 3, which is of sheet metal, tapers to a point at the front end 16.
Patent GB-807033-A (GB)
Title: Electrical fail-safe systems
IPC: G05B9/02
Filed: 1956-07-31
Abstract: 807,033. Photo-electric flame detection. SCULLY SIGNAL CO. July 31, 1956 [May 8, 1956, No. 23642/56. Class 40 (3). A fail-safe system for monitoring fluctuating radiation comprises means to produce an electric signal fluctating in correspondence to the radiation, means to recover the fluctuations from the signal and indicating means operable in the event of failure to recover the fluctuations for a time longer than the largest fluctuation. Infra-red light within 5-25 cycles per second from a gas burner is detected by a lead sulphide photo-cell and the signal amplified by a known high input impedance electronic monitor amplifier (not shown). Attached to the output terminals, 10, 12 of the system is an electromagnetic relay RY1 adapted to respond to fluctuations within the range of 5-25 cycles per second and shunted by a holding capacitor of the same reference C10 as the holding capacitor of the relay RY. A suppression circuit for maintaining the relay RY energized so long as the fluctuations are reproduced by synchronous energization and de-energization of the relay RY1 includes a capacitor C12 which alternately stores and discharges D.C. energy to feed the slow release load relay RY in synchronism with the recovery of the fluctuations in the signal. With the relay RY1 energized (not shown) armature 94 operates to pivot switches 90, 92 so that current from an A.C. source L1, L2 may be rectified at S to charge the capacitor C12 with a D.C. potential. With relay RY1 deenergized (as shown) the capacitor C12 discharges. In the event of failure to continue the current after the capacitor has discharged relay RY de-energizes activating a warning or other device. Known count-down apparatus may be used so that the relay is energized once every group of fluctuations. An alternative apparatus, Fig. 1 (not shown), comprises a step-up transformer tuned to the frequency band of the radiations to be detected, the signals from which are rectified and passed through a load relay which is shunted by a holding capacitor adapted to delay discharge of the relay for a time longer than the longest period of no-signal. Other sources of energy with inherent fluctuations, light of other wavelengths, sound, &c., may be detected by suitable means. Specifications 793,511 and 793,512 are referred to.
Patent GB-1171246-A (GB)
Title: Collapsible Tubes
IPC: B65D41/04
Filed: 1967-05-22
Abstract: 1,171,246. Container-closures. MEPAG, METALLUND PLASTIK - PACKUNG G.m.b.H. & CO. 22 May, 1967 [20 May, 1966], No. 23646/67. Heading B8T. A collapsible tube 1 has a nozzle 3 provided with a plurality of parallel screw threads designed to receive a correspondingly threaded cap (not shown). In a modification, the threads may be formed on a plastics collar which is secured to the nozzle.
Patent GB-953347-A (GB)
Title: A process for producing a slidable or friction material
IPC: F16C33/20
Filed: 1960-07-07
Abstract: A material suitable for use as a bearing or friction material is formed from a powder mixture of copper and tin oxide, preferably metastannic acid, which is compacted and then heated in a reducing atmosphere above the melting point of tin to form a porous compact in which the copper is bonded by tin.  Lead and glass powder may also be added to the powder mixture and the heating is carried out above 700 DEG C.  The sintered porous compact is then impregnated with polyoxymethylene, P.T.F.E. or silicones. The glass may also be introduced by impregnation.  The powder mixture may also be bonded to a steel carrier during the sintering treatment and in one example a first layer of a bronze containing 10-14% tin is formed on a steel base and a layer containing 5-8% tin is formed on the first layer. The pore space is then impregnated with polyoxymethylene.
Patent GB-599352-A (GB)
Title: Improvements in straps
IPC: A44C5/00
Filed: 1945-09-17
Abstract: 599,352. Watch straps. FISHER, N. CAREW-. Sept. 17, 1945, No. 23906. [Class 43] Each end of a watch strap is connected to a common buckle, one part 3 being attached to the prong-carrying bar 6 of the buckle 7, the other part 2 which has adjustment holes 9 being attached to the rim of the buckle but being capable of movement relative thereto. The end of the part 2 is passed underneath the free bar 8 of the buckle and is then formed into a loop, either by folding the strap back upon itself or by stitching to the end 12 of the strap a tongue piece 11 which may be attached to the main part of the strap by a loop. 13 at its inner end. The strap may be in two pieces 2, 3, as shown, or may be in one piece. The conventional form of watch strap can easily be altered to this form by the attachment of an extension piece 11.