baber/WOPTO huggingface dataset:
Patent GB-271139-A (GB)
Title: Improvements in or relating to wireless receiving instruments and loud speakers or other telephone receivers
IPC: H03G1/02
Filed: 1926-02-15
Abstract: 271,139. Coaks, R. H. Feb. 15, 1926. Receiving apparatus. - A variable shunt resistance of the slider type for varying from a distance the volume of reproduction from a loudspeaker or other telephone instrument operated by a wireless receiving-set or the like comprises an electric resistance 12 connected at one end to a terminal 22 and at the other end and at intermediate tapping-points to a set of lineally arranged contact plates 13, a contact strip 18 arranged in line with the contact plates and connected to a second terminal 21 and a manually operated lineally adjustable sliding contact member 14 which always contacts with the contact strip and connects it to different contact plates according to the position of the sliding member. In one end position the slider bridges the contact plate connected to the terminals and the contact strip, thus short-circuiting the resistance, and in the other end position contacts with contact strips only, thus breaking the circuit between the terminals. The resistance is wound on a cylindrical sectional insulating former 11 and the contact plates and strip are disposed along the bottom of a longitudinal groove in an insulating- bar 9 parallel to the former. Contact fingers 15, 16 on the slider travel along the groove, and the slider is also guided by a bar 10.
Patent GB-1101751-A (GB)
Title: Improvements in or relating to pumping systems
Inventor: CRASWELL KENNETH BRIGGS
IPC: B01L1/02
Filed: 1965-02-01
Abstract: 1,101,751. Vacuum chambers. BIR-VAC Ltd. Feb. 1, 1966 [Feb. 1, 1966], No.4375/65. Heading F1X. A pump 3, Fig. 2, is movable relatively to chambers 1 for connection thereto in a predetermined order by means of retractable duct means 6 provided on the pump or on the chambers. The vacuum chambers 1 e.g. for metallizing, degassing, drying or melting, are successively evacuated by the pump 3 which is movable on a track 5, the vacuum being maintained by smaller pumps 2 after the closing of a valve in port 7. The valve and/or track 5 may be omitted. Pump 3 may comprise a mechanical vacuum pump and a mechanical or vapour booster pump.
Patent GB-1027487-A (GB)
Title: Electrical resistors
Inventor: CLUFF J
IPC: H01C1/148
Filed: 1964-02-03
Abstract: 1,027,487. Ohmic resistors. ERIE RESISTOR Ltd. Dec. 31, 1964 [Feb. 3, 1964], No. 4424/64. Heading H1S. A resistor 1 (Fig. 1) comprises a tubular ceramic member carrying on its outer surface a winding of resistance wire or a coating of resistance material, a first terminal or plug 3 being connected to the opposite end of the resistance by a wire passing through the ceramic tube and a shouldered second terminal or plug member 4a, 4b, parallel to member 3, being connected to the other end of the resistance. The resistance coating may be a carbon, metal or metal oxide film. End caps or bands 1a, 1b may be secured or cemented to the ceramic tubular member and joined to the resistance material by soldering or brazing. The resistance may be encapsulated, e.g. in a silicon based cement.
Patent GB-311457-A (GB)
Title: Press for extruding or squirting metal tubes
IPC: B21C23/21
Filed: 1928-02-13
Abstract: 311,457. Gardner, L. F., (Testa Ges.). Feb. 13, 1928. Squirting.-In a press, for extruding tubes, comprising a matrix 1 for holding the billet 4 and a ram 5 carrying a mandrel 6 for piercing and extruding the billet, the matrix only advances during the piercing operation and the ram only during the extruding operation. The press is operated by a driving shaft 14 which actuates the matrix by gearing 15, 16, 17 and a cam 9 having a concentric portion 8 to give the necessary pause, and actuates the ram through a gear 18, mutilated for the same purpose, and a crank 12.
Patent GB-910615-A (GB)
Title: Process of manufacturing warp knitted fabrics having controlled and constant elasticity and the product resulting therefrom
IPC: D04B1/06
Filed: 1960-02-09
Abstract: 910,615. Knitted fabrics. MANUFACTURES JEAN BAPTISTE MARTIN, J. MARTIN-A., CHARRIN & CIE. Feb. 9, 1960 [Feb. 10,1959l No. 4519/60. Class 74 (2). A process for obtaining elastic warp-knitted fabrics having controlled elasticity is characterized by the provision of selvedges which offer a resistance to longitudinal extension which is greater than that offered by the remainder of the fabric, the selvedge assuring at least temporarily the required longitudinal stabilization whilst the structure of the knitted fabric is in a deformable condition, the fabric being submitted subsequently to heat treatment, whereby it is stabilized and rendered elastic. Thus, selvedges L1, L2 of an antiladder fabric may contain reinforcing threads knitted in a pattern different from the knitting pattern of the threads of the body of the fabric. Such selvedge threads may be contractable and thicker than those of the body. Thus, they may be of polyvinyl chloride thread of metric number 45, whilst reinforcements R1, R2 are of polyamide thread of metric number 300 and the part F of polyamide thread of metric number 600. Contraction by heat treatment of the selvedges controls the longitudinal dimension of the fabric until that fabric is stabilized, such heat treatment being at a temperature below that required for stabilization of the polyamide. The heat treatment may be effected on the knitting machine, or on a fabric-receiving roller at a predetermined tension, or in a free state of the fabric. The resistance of the selvedges to longitudinal extension may also be afforded by a ribbon stuck or sewn on to the fabric. Stocking blanks 1, 2 may be cut from the fabric, as shown.
Patent GB-230435-A (GB)
Title: Improvements in and relating to toroidal coils and to the method and apparatus for making the same
IPC: H01F41/04
Filed: 1925-02-18
Abstract: 230,435. Auty, F. March 5, 1924, [Convention date]. Coils, apparatus for making. - Self-sustaining toroidal coils for use in wireless signalling apparatus and otherwise are formed by winding a length of wire into a helix, preventing the unencased coil from spreading after it is wound, for instance by applying an adhesive tape 12 or 120 along it, either inside or outside or both, and then curving the coil into a torus. Preferably the coil is wound so that on one side the convolutions overlap in groups, as shown in Fig. 4, the number of overlapping wires in each group being the ratio between the outer and inner diameters of the torus. To wind the coil, a mandrel is made by turning eccentric grooves 21 in a cylindrical rod, as shown in Figs. 5, 6 and 7, one face of the grooves being radial and the other inclined. The inclined face may be straight or curved, and the grooves may be separate and parallel, or formed like a screw-thread. The mandrel is finished in collapsable form, having a removable core 31, Fig. 6, and segments 30 held together by end caps 33. Wire is wound on this mandrel so that the convolutions climb up the inclined faces of the grooves and then drop suddenly into the bottom of the next groove. Several layers may be wound in each groove. The parts of the coils on which the adhesive tape is applied may be flatly cylindrical, as indicated by the lines 29, Figs. 1 and 6. A mount for the coils may comprise conical discs 14, 15, Fig. 1, supported on a central rod 16.
Patent GB-783111-A (GB)
Title: Improvements in the preparation of potassium polyphosphate
Inventor: SEMMENS PETER WILLIAM BRETT
IPC: C01B25/41
Filed: 1955-02-16
Abstract: A mixture of ammonium dihydrogen phosphate and potassium chloride is heated at below 800 DEG  C. to prepare substantially linear polymeric potassium polyphosphate having a formula such as (KPO3)m.  Preferably equimolecular proportions of the reactants are used.  The heating preferably is first conducted at not above 400 DEG  C., e.g. 2-300 DEG  C., for an hour and then for two hours at a higher temperature. The removal of steam and ammonium chloride from the product may be assisted during heating by agitation or the passage of an inert gas thereover.
Patent GB-1210288-A (GB)
Title: Improved means for mounting glass panes in apertures
Inventor: WEBB RONALD RICHARD
IPC: B60J10/02
Filed: 1968-01-30
Abstract: 1,210,288. Glazing strips. HOWARD CLAYTON-WRIGHT Ltd. 22 Jan., 1969 [30 Jan., 1968], No. 4653/68. Heading E1R. A strip 11 of glazing material e.g. uncured neoprene based compound particularly for securing a pane 17 in an aperture in the body 18 of a vehicle has a longitudinally extending groove 12, or grooves and disposed therein a mastic substance 16 which is softer than the strip material and which protrudes from the surface of the strip so as to engage the surface 20 of the flange 19 surrounding the aperture and seals any undulations or irregularities in the otherwise plain surface 20. The pane is pressed on to the strip which is cured by an electrical heating wire or by hot fluid passed through a tube 14 of small diameter (even capillery) embedded in the strip.
Patent GB-293280-A (GB)
Title: Improvements in and relating to curtain rings
IPC: A47H13/02
Filed: 1928-02-14
Abstract: 293,280. Rumpf, H., and Rumpf, I. J. Feb. 14, 1928. Curtain rings.-A curtain ring is formed of a single length of wire bent to a round or rectangular shape 6 the ends 9, 11 being overlapped, and preferably pointed, so that they can be separated and the ring placed upon the rod without removing the rod from its supporting brackets. The ring is formed with a bulge 7 and the wire may be roughened at 8. In use an eye, attached to the curtain is supported at the lower part of the ring and the upper part of the curtain is stitched or otherwise secured to the roughened part of the ring. Specifications 6202/10, 151,108, and 204,763 are referred to.
Patent GB-415063-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G19/16
Filed: 1933-02-15
Abstract: 415,063. Conveyers. REDLER, A., Severnsea, Sharpness, Gloucestershire. Feb. 15, 1933, Nos. 4685 and 10368. [Class 78 (i).] In an en masse type of conveyer in which flights are mounted on an endless chain, rope, cable, band, &c., the flights are angularly displaceable relatively to the chain &c. to enable the cross-sectional area of the ineffective return traverse to be reduced. Fig. 1 shows flights 5 pivoted by universal joints 6 to trail behind links 1, lugs 7 on the flights abutting against stops 8 to limit their swing to one direction. The flights after leaving the operative trough 3 are tilted by contact with the sprocket 9 and enter the smaller return duct 4 collapsed against the chain. The sprocket 9 may be on a power shaft 10 and has flats 11 and double teeth 12. Means may be provided on the opposite sprocket for bringing the flights back into operative position. Fig. 6 shows a modification in which the flights consist of two bars 23, 24 each pivoted to a link 21. The bars 24 are turned in on approaching the sprocket 26 by a bell-crank 31 tilted by a pivoted arm 29 swung by a cam 28 on the sprocket. The bars 23 are similarly turned in by contact of the sprocket teeth 27 with bosses 23A on the bars. The bars 23, 24 return to operative position by gravity, by frictional or other means, or by engagement with the load. The bars 24 may be omitted. Fig. 9 shows a further modification in which the flights have rigid projecting arms 43 pivoted to the common junction of links 45. Discs 48 on the sprocket wheel coact with parts of each flight to turn it into parallelism with the chain-links 45. Similar discs 51, spaced closer together, may be provided at the other terminal to effect turning of the flights into working position, or the turning may be brought about by gravity. In all constructions, one or more tilting flights may be provided which fill the space swept out in the operative trough and have brushes &c. around their edges to clean the trough. Specifications 169,262 and 316,233, [both in Class 78 (i)], are referred to in the Complete Specification, and the first Provisional Specification also refers to Specifications 243,770, 244,693, 249,570, and 323,204, [all in Class 78 (i)].
Patent GB-1223091-A (GB)
Title: A method of operating a crossed field amplifier
IPC: H01J25/44
Filed: 1969-01-28
Abstract: 1,223,091. Travelling-wave tubes. GENERAL ELECTRIC CO. 28 Jan., 1969 [7 Feb., 1968], No. 4764/69. Heading HID. A crossed field travelling-wave tube is operated with such relative values of the crossed fields that the electrons pursue cycloidal trajectories through the interaction region, which is thereby permitted to be of reduced length, since unfavourably phased electrons reach, and are removed by, the sole electrode, rather than, as in prior art devices, being gradually ahifted to a favourable phase as they progress along the interaction region. An electron gun proper may be dispensed with, the electron source being formed by a heated, emissive-coated portion 22 of the sole electrode 21. In modified arrangements, the emissive-coated portion may be separated from the remainder of the sole to reduce loss of heat from the heater (Fig. 4, not shown); the sole may be composed of a series of segments held at different potentials to facilitate collection of the unfavourably phased electrons; and the device may be of cylindrical form (Fig. 6, not shown).
Patent GB-588525-A (GB)
Title: Improvements in or relating to clutches
IPC: F16H31/00
Filed: 1945-02-26
Abstract: 588,525. Toothed gearing. BRITISH TABULATING MACHINE CO., Ltd., and LAST, J. Feb. 26, 1945, No. 4815. [Class 80 (i)] In toothed gearing adapted for connecting and disconnecting the drive a driven gear wheel has teeth cut away radially so that in certain angular positions they clear the teeth of a driving gear wheel but engage them in other positions. An auxiliary toothed member pivoted to the driven wheel is movable when drive is to be transmitted to present engaging teeth to the driving wheel in the inoperative sections of the driven wheel. As shown, the driven wheel 2, Fig. 1 and 2, has alternate oppositely directed oblique cutaways 11, 12 on its teeth so that they clear the teeth of the driving wheel 1 in certain positions. The wheel 2 also carries on a projecting hub 4 an auxiliary ring 3 having similarly multilated teeth which forms with it a composite toothed member. When no drive is to be transmitted two interacting spring-loaded detents 13, 15 act as shown in Fig. 1 against teeth of the members 2, 3 respectively, holding them with their teeth profiles coincident. To transmit drive, the detent 13 is retracted to clear the teeth of the ring 3 which then moves clockwise one tooth space relative to the wheel 2 under the action of a spring 8 situated in a recess 9 in the hub 4, to the position shown in Fig. 3, each composite tooth of the members 2, 3 then having a long flank 11 on each side and being able to engage the wheel 1. Further movement of the detent 13 acts through a lug 19 to free the detent 15. To disengage the drive the detent 13 is released, its resultant return movement being limited by a stop 20 so that it engages only a tooth of the wheel 3 which presents to it a long flank 11. The wheel 1 then continues to drive the wheel 2 against the spring 8 into an inoperative position wnere it is held by the detent 15. The detents 13, 15 may engage projections on the members 2, 3 instead of their teeth, and the spring 8 may be replaced by a helical tension spring. In another form (not shown) the spring 8 is dispensed with, an additional member pivoted on an extension of the detent 13 serving to change the phase of the members 2, 3 positively when the detents are retracted.
Patent GB-785921-A (GB)
Title: Improvements in valves for gas containers
Inventor: OLIVER FREDERICK DERRICK
IPC: F16K1/30
Filed: 1955-02-18
Abstract: 785,921. Valves. CALOR GAS (DISTRIBUTING) CO., Ltd. Feb. 17, 1956 [Feb. 18, 1955], No. 4911/55. Class 135. A valve for gas containers comprises an axially movable valve pin 12 co-operable with a valve seat 14, a resilient stop 24 arranged in a valve chamber 5 to limit the opening movement of the pin and form a seal therewith, and sealing means such as the sealing ring 26 for trapping lubricant between the stop and the sealing means. The stop 24 is in the form of a rubber or other resilient washer held in a counterbore in the valve chamber by a screwed plug 22 which guides the valve pin. A control knob 17 or the like is secured to a non-circular portion 19 of the valve pin by a nut 18. The nut 18 is obscured by a blanking disc 20 in a groove 21 and cannot be tampered with without buckling or fracturing the disc 20. The sealing ring 26 is arranged between a pair of annular flanges 25 on the valve pin, the upper of which co-operates with the stop washer 24 to limit the valve opening movement. The lower part 15 of the valve pin screws into the valve chamber. The valve body has a threaded spigot 2 for connection to a gas cylinder and a threaded outlet extension 7 which may be closed by a cap 9 when the extension 7 is not connected to a burner or the like. Rotation of the knob 17 prior to use of the valve is prevented by a sealing wire through eyelets 27, 28.
Patent GB-139879-A (GB)
Title: Improved attachments for fixing handles to broom heads and the like
IPC: B25G3/12
Filed: 1919-02-27
Abstract: 139,879. Smith, W. J., and Emmett, P. A. Feb. 27, 1919. Barbed holding-devices with lug or flange attachments or clamping-devices for socket fixings.-A fixing-device for socket handle-attachments of brooms and the like comprises an adjustable sleeve having three legs or extensions with barbs which are placed in the socket of the brush head and expanded by driving-in the handle, the sleeve being then fixed to, or clamped on, the handle. As shown in Figs. 1 and 3, the sleeve a is split at b and is formed with three extensions d having barbs e at the ends. Holes c are formed for fixing by screws &c. to the handle, as shown in Fig. 3. In the modification shown in Fig. 2, the sleeve a has lugs f with holes g for a clamping-bolt.
Patent GB-512230-A (GB)
Title: Improvements relating to heat-exchanger cores, particularly for motor-vehicle radiators
IPC: F28F1/32
Filed: 1939-02-15
Abstract: 512,230. Finned heat-exchange tubes. RANDLE, F. Feb. 15, 1939, No. 4941. [Class 64 (iii)] In a radiator cove particularly for a motor vehicle and of the kind having rows of elongated sheetmetal tubes extending through fins having grooves 15 between the rows and projections 16, 17 pressed in their edges, the similarly directed projections on the fins are arranged on the same vertical lines. Specification 466,539 is referred to.
Patent GB-123988-A (GB)
Title: Means for Transporting Articles such as Moulds for Chocolate or other Substances from One Plane to a Higher One Continuously.
Inventor: SAVY EMILE LOUIS ALFRED
IPC: A23G7/00
Filed: 1919-02-27
Abstract: 123,988. Savy, E. L. A. March 17, 1917, [Convention date]. Casting confectionery. -Moulds for chocolate &c. or other flat articles are transported from a conveyer 1 to a conveyer 2 by a series of conveyers 5, 6, 9, 10 each composed of two chains on which wooden or iron laths are riveted. The speed of the conveyer 5 is greater than that of the conveyer 1 so that the moulds M become separated. The end 8 of the conveyer 9 is so arranged that a mould does not fall towards the conveyer 6 until its forward end rests on the shelf 16 of a verticallymovable counterweighted sector 13 which moves down slowly until the mould is deposited on the conveyer 6. A roller T prevents the mould coming into contact with the conveyer 6 bebefore it has taken the direction of the conveyer 9. If the moulds M are arranged in two parallel lines on the conveyer 1, they may be superposed at 12 on the conveyer 2 by providing additional conveyers 9<1>, 11. Guides 17, 17<1> may be provided to ensure exact superposition.
Patent GB-1299065-A (GB)
Title: Two-stage rotary-piston compressor
IPC: F16C33/10
Filed: 1970-02-03
Abstract: 1299065 Rotary-piston compressors MITSUI SHIPBUILDING & ENG CO Ltd 3 Feb 1970 [8 Feb 1969] 5063/70 Heading F1F A two-stage compressor has eccentric pistons 18, 18a fixed to a common driving-shaft 17 and lodged in cylindrical chambers 14, 15 that are limited axially by partitions 11, 12, 13, inlet and outlet ports in the peripheral wall of each cylinder being separated by a plate 20 that is moved radially in synchronism with the pistons by cams 23, 24. The outlet port of the cylinder 14 contains a non-return valve 30 and is connected by way of an inter-stage cooler to the inlet port of the chamber 15, Fig. 1 (not shown).
Patent GB-160453-A (GB)
Title: An improved material for the insulating of pipes or similar parts against heat or cold
IPC: F16L59/02
Filed: 1921-02-14
Abstract: 160,453. Mellgren, O. J. March 18, 1920, [Convention date]. N o n - conducting coverings for heat. -An insulating covering for steam-pipes, boilers, pumps, &c. comprises a flexible hose 1 of cloth or the like adapted to be filled with fine-ground bark of pine as an insulating material and to be wrapped round the pipe 4 in one or more layers. Before wrapping, the filled hose is preferably dipped into water-glass or a similar coating-solution. In order to join two sections of hose, the ends of one section are tied at 3 leaving empty extreme portions 5 which are passed over the filled ends of the adjacent section and secured by a cord 6. The wrapping is preferably covered by an external binding 7 which is also coated with a protecting-material such as water-glass or oilpaint.
Patent GB-838302-A (GB)
Title: Improvements in or relating to froth flotation
IPC: B03D1/16
Filed: 1957-02-15
Abstract: 838,302. Froth flotation. POTTER, W. W. (Mining Process & Patent Co.). Feb. 15, 1957, No. 5171/57. Class 82(2) A froth flotation apparatus incorporates two impellers 20, 22, the upper one of which forms an air vortex 27 and also expels part of the air sucked down the tube 15 laterally to form froth. The lower impeller 22 mixes the air from the vortex with the pulp and the aerated pulp is forced through apertures 25 into the main body of the pulp. Several such impeller units may be positioned in a single container 10.
Patent GB-428405-A (GB)
Title: Improvements relating to apparatus for producing electrical impulses of very high voltage
IPC: H03K3/537
Filed: 1934-02-16
Abstract: 428,405. Condensers ; charging and discharging. BRASCH, A., 4, Clausewitzstrasse, Charlottenburg, and LANGE, F., 19, Waldowstrasse, Friedrichshagen, both in Berlin. Feb. 16, 1934, No. 5260. Convention date, Feb. 16, 1933. Addition to 389,813. [Classes 38 (ii) and 38 (iv)] [See also Group XL] The arrangement described in the parent Specification for generating momentary high voltages by charging a number of condensers in parallel through resistances, and then discharging them in series through sparkgaps, is characterized by the provision, in addition to those spark-gaps which are normally operated in compressed gas, of one or more other spark-gaps open to ordinary atmospheric pressure. The latter serve to initiate a migrating wave which ensures a simultaneous discharge of all the gaps.
Patent GB-1524614-A (GB)
Title: Barrier system
IPC: E01F13/02
Filed: 1977-05-11
Abstract: 1524614 Barrier CAMERON-PRICE Ltd 11 May 1977 [11 Feb 1976] 05310/76 Heading E1B An elongate structural element for forming horizontal or vertical members of a barrier system comprises a tube having a plurality of abutting plastics sleeves 2 covering the whole length of the tube and held in place by inserts 6 in both ends of the tube. The inserts include spigots or sockets for attaching the elements together or to bases or for receiving lamp supports. Alternate sleeves are of different colours, and at their abutting wide ends embrace a spacer ring mounted on the tube. The tube may be metal or plastics.