baber/WOPTO huggingface dataset:
Patent GB-844488-A (GB)
Title: A process for the production of filamentary materials from polycarbonates
IPC: B29C67/00
Filed: 1958-01-13
Abstract: Filamentary materials or films of thermoplastic polycarbonates of high molecular weight are made by stretching a crystallisable polycarbonate in the form of a filamentary material or film at or above the conversion temperature and below the melting point of the polycarbonate.  Stretching is preferably carried out at 20-30 DEG C., above the conversion temperature, which is defined as the point of intersection of the two linear parts of the refractive index-temperature curve.  Suitable polycarbonates include those derivable from 1, 1-(4, 41-dihydroxydiphenyl) ethane, -butane, -isobutane, and -cyclohexane, and from 2, 2-(4, 41-dihydroxydiphenyl)-propane and -butane, all of which have conversion temperatures within the range 123-170 DEG C. Polycarbonates derivable from 2, 2-(4, 41 dihydroxydiphenyl) pentane, 2, 2-(4, 41-dihydroxydicresyl) propane, and from mixtures of 2, 2-(4, 41-dihydroxydiphenyl)-propane and 4, 41-dihydroxy diphenyl methane; 2, 2-(4, 41-dihydroxydiphenyl)-propane and 1, 1-(4, 41-dihydroxydiphenyl)-cyclohexane; 2, 2-(4, 41-dihydroxydiphenyl)-propane and 2, 6-dihydroxynaphthalene; 2, 2-(4, 41-dihydroxydiphenyl)-propane and 4, 41-dihydroxydiphenyl; 2, 2-(4, 41-dihydroxydiphenyl) propane and hydroquin one; 2, 2-(4, 41-dihydroxydiphenyl)-propane and xylylene glycol; 2, 2-(4, 41-dihydroxydiphenyl)propane and 2, 2-(4, 41-dihydroxydicyclohexyl)propane; and polycarbonates derivable from 4, 41-dihydroxydiphenylsulphone, 4, 41-dihydroxydiphenyl sulphoxide, 4, 41 dihydroxydiphenyl ether and 4, 41-dihydroxydiphenyl sulphide may also be used.  Specifications 772,627, 808,485, 808,486 and 809,735 are referred to.
Patent GB-584638-A (GB)
Title: Aeroplane landing gear
IPC: B64C25/40
Filed: 1945-01-15
Abstract: 584,638. Aircraft landing wheels. KENDRICK, J. F. Jan. 15, 1945, No. 1185. [Class 4] To effect rotation of a landing wheel prior to its making contact with the ground, the hub is furnished with turbine blades 10, a stationary plate 12 being provided with nozzles 13, 16, which respectively supply air to, and exhaust it from, the turbine chamber. The supply and exhaust nozzles are arranged alternately around the circumference of the upper portion of the plate 12, the supply nozzles pointing forwardly and the exhaust nozzles rearwardly. The lower portion of the nozzle plate is provided with solid lugs 17 of greater mass than the nozzles 13, 16, whereby the nozzle plate 12 is normally held stationary. In the event of the nozzle plate adhering to the wheel body, for example due to ice formation, the plate is rotated with the wheel when the latter contacts the ground, thereby preventing skidding of the wheels and nose pitching of the aircraft. According to modifications, the nozzle plate may normally be held in position by a frangible pin passing through the wheel axle, or by an expansion spring coiled around abutting collars on the hub of the plate and the undercarriage leg.
Patent GB-174343-A (GB)
Title: An improved device for imparting reciprocating motion to saw frames and the like for cutting stone, marble and the like
IPC: B28D1/06
Filed: 1922-01-13
Abstract: 174,343. Stocq, E. Jan. 21, 1921, [Convention date]. Sawing.-A stone-sawing frame is driven in such a manner as to avoid shocks. The driving crank axle at one end of the frame is carried by a cross-beam E attached to the verticallymoving slides C, C<1> which carry the frame, and drives the frame through springs M, M'. For this purpose the crank pin is mounted in a block L which slides horizontally in a housing K under the control of the springs M, M', and the housing K slides vertically between guides I attached to the saw frame. The frame is also attached to the slides by shockabsorbing springs G, G<1>.
Patent GB-938596-A (GB)
Title: Improvements in or relating to hydraulic pumps or motors
IPC: F01B17/02
Filed: 1960-01-13
Abstract: 938,596. Swash plate pumps. VICKERS Inc. Jan. 13, 1960 [Jan. 14, 1959], No. 1224/60. Addition to 938,595. Class 102(1). [Also in Group XXIX] A reciprocating pump comprises a rotating cylinder block 36, Fig. 1, housing axial pistons whose end face contacts a valve plate 50, the block and plate being urged into contact by a spring loaded pin 38. The valve plate 50 is provided with high pressure and low pressure arcuate ports 134, 132 as shown in Fig. 5 and two vanes 87 which contact the surface 72 of the chamber in which the plate is mounted while two vanes 91, 92 mounted in the housing contact the valve plate. When the high pressure exceeds a predetermined value it acts on a spring loaded control valve as in Fig. 2 (not shown) to move the valve and allow high pressure liquid to flow to two of the chambers formed between the two sets of vanes causing rotation of the valve plate to vary the phase relationship between the arcuate slots and the reciprocating pistons. The maximum extent of the movement is governed by pins 124, 126 and slots 120, 122. When the high pressure again drops the liquid in the chamber is released by movement of the control valve and the valve plate moves to its original position under the action of a coil spring 110. Sealing means are provided to prevent leakage of the liquid from the chambers between the vanes. Specification 778,186 also is referred to.
Patent GB-1087521-A (GB)
Title: Preparation of alkylene monothiocarbonates
IPC: C07D327/04
Filed: 1965-01-11
Abstract: Optionally halogenated alkylene monothiocarbonates are prepared by condensing an alkali metal, alkaline earth or ammonium thiocyanate with an alkylene oxide in an aqueous medium of pH 0-3 at 0 DEG -50 DEG  C. to give the alkylene hydroxythiocyanate which is ether isomerized, cyclized and hydrolysed in the presence of an acid to give the desired product. The conversion of the hydroxy-thiocyanate to a monothiocarbonate may be conducted in a single operation or in two stages with the isolation of a 2-imino-1,3-oxathiolane salt as the product of isomerization and cyclization, this product then being hydrolysed to give the corresponding monothiocarbonate.
Patent GB-1405856-A (GB)
Title: Portable reciprocating type filing machine
IPC: B24B23/04
Filed: 1973-01-10
Abstract: 1405856 Filing machines NITTO KOHKI CO Ltd 10 Jan 1973 [20 July 1972] 1244/73 Heading B3L A reciprocating type portable filing machine has a main hand grip 10, a hollow main body 30, a fluid actuated cylindrical reciprocator 60 disposed in the main body, an axially slidable piston 80 in the reciprocator 60, a filing member 90 rigidly connected to the reciprocator and a roller bearing assembly 100 spaced between the main body and the filing member 90. In operation actuation of valve member 23 allows air to enter one of the chambers 77, 78 in the reciprocator. Consider air initially enters chamber 78 then the piston is forced to the left and the reciprocator moves to the right against spring 48. Such movement uncovers exhaust ports 63 allowing chamber 78 to be vented such that spring 48 can move the reciprocator to the left. The movement of the piston causes air to enter chamber 77 and a similar sequence of movement of the piston and the reciprocator occurs although the directions are reversed.
Patent GB-838163-A (GB)
Title: New or improved means for securing a mudguard to cycle stays
Inventor: BLUEMEL FRANK WILLIAM
IPC: B62J15/02
Filed: 1958-01-14
Abstract: 838,163. Mudguards. BLUEMEL BROS. Ltd. Jan. 12, 1959 [Jan. 14, 1958] No. 1254/58. Class 136(1) Means for securing cycle mudguards to straps comprise a bridge piece 12 and a pair of headed studs 17 formed in an elastomer material, the bridge piece being formed at each end with an opening 16 for the passage of one of the studs 17, each stud having a transversely extending hole 20 in its shank to receive the adjacent end of one of the stays 15. The openings 16 may be keyhole slots. The holes 20 may have enlarged portions 22 to facilitate the insertion of the stay ends. Specification 357,181 is referred to.
Patent GB-1280842-A (GB)
Title: Polarization rotator
IPC: G01S13/44
Filed: 1969-08-14
Abstract: 1280842 Waveguide polarization rotator RCA CORPORATION 14 Aug 1969 [21 Aug 1968] 1342/72 Divided out of 1280841 Heading H1W The description is the same as in the parent Specification, but the claims relate to a phase shifter and to a polarization rotation system. As described, a phase shifter 73, Figs. 9, 10, is a square waveguide section having a ridge 86 on each of the four sides to excite a wide band of frequencies, and capable of propagating signals in both the TE 10  mode and the TE 01  mode. Spaced along two opposite corners of the waveguide section are two sets of fifteen irises 88, which cause an incoming wave with polarization parallel to a side wall of the waveguide section (e.g., in the TE 10  or TE 01  mode) to split into two equal power orthogonal components, with a nominally 90 degrees differential phase shift by the time they are propagated through the waveguide section. Posts 90 may be placed in the middle of each iris which resonate in the upper part of the operating frequency band. If the irises are arranged for resonance in the lower part of the operating frequency band, the combined impedance remains nearly constant over said band. Residual mismatch effects are compensated by tuning screws 89. A polarization rotation system uses two such phase shifters, which are coupled in axially aligned relationship, and which are relatively rotatable. TE 10  and TE 01  mode waves are converted into circularly polarized mode waves of opposite hands by passage through one phase shifter, and are re-converted into TE 10  and TE 01  mode waves by 'passage 'through the 'other phase shifter, but with an attitude which is dependent upon the angle between said phase shifters. As described, a phase shifter (75), Fig. 11 (not shown), is rotatable through gearing (111), (112) by an electric motor (110) and is coupled at each end to fixed equipment (there being a fixed phase shifter at one end) through a rotary joint. As shown in Fig. 12, a rotary joint comprises a square to circular waveguide transition 96, and a circular to square waveguide transition 97. A flange 99 is opposed  by a flange 98, and is formed with grooving 100 and 101 respectively providing half-wavelength chokes at received and transmitted operating frequencies.
Patent GB-913503-A (GB)
Title: Improvements in or relating to electric cable connectors
IPC: H01R4/56
Filed: 1961-01-13
Abstract: 913,503. Cable and wire couplings. TELEFUNKEN G.m.b.H. Jan. 13, 1961 [Jan. 14, 1960], No. 1519/61. Class 38 (1). A cable connector consists of two similar insulating shells each formed in two halves 2, 3 which are jointed together, having longitudinal centre bores 17, 18 recessed to hold bosses 4, 5 on the ends of a cylindrical rigid conducting piece 1, said bosses having inclined tapered holes 7, 8 to receive the uncovered conductors of cables 19, 20. With the connector in the initial position in which marking ribs 27 formed on the surfaces of the shells are aligned, shoulders 11 and 12 on helical faces 9, 10 of the bosses 4, 5 contact the widest part of walls 21 in the half-shells 2, which are formed with internal helical faces 22, so that the inner ends of holes 7, 8 are free and can accept the bore conductors of cables 19, 20 as shown in the right-hand half of Fig. 2. When the shells are rotated in opposite directions the bare conductors are clamped between the helical faces 9, 10 and the corresponding faces 22, as shown in the left-hand half of Fig. 2. The pitch of the faces is chosen so as to prevent the release of the cables when they are subjected to tension.
Patent GB-365323-A (GB)
Title: Process for the treatment of natural and artificial cellulosic fibres with alkali
IPC: D06M13/144
Filed: 1931-01-16
Abstract: 365,323. Wetting &c. agents. CHEMISCHE FABRIK VORM. SANDOZ, Basle, Switzerland. Jan. 16, 1931, No. 1521. Convention date, Jan. 16, 1930. [Class 15 (ii).] The wetting properties of alkali solutions of mercerizing strength for use in the treatment of natural and artificial cellulose fibres with alkali, are improved by adding a mixture of phenols with ketones, not containing hydroxy groups or mixtures thereof. In two examples, mixtures of commercial tar cresols with camphor and with acetone oil are added to caustic soda lyes. The ketones known by the name " Ketol," acetone, cyclopentanone, cyclohexanone, and methylcyclohexanone are also mentioned. Specification 279,784, [Class 15 (ii), Dyeing, Processes &c. for], is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of hydroxy ketones, in association with phenols, acetone alcohol being mentioned. This subject-matter does not appear in the Specification as accepted.
Patent GB-984397-A (GB)
Title: High voltage electric generator
IPC: H02M3/18
Filed: 1963-01-14
Abstract: 984,397. Capacitors. UNITED STATES ATOMIC ENERGY COMMISSION. Jan. 14, 1963 [April 16, 1962], No. 1581/63. Heading H1M. [Also in Division H2] A cyclicly variable capacitor comprises a rotor 26 and stator 30 having axial ridges 28, 32. The minimum gap separation S is given as 0.005 inch and the width should be about 45 s. and the depth 90 s., the separation being about 90 s. Each ridge should have a slightly oval surface. For a rotor 1 foot long and 1 foot dia., the output is given as 2 KVA with a peak voltage of 35KV when the rotor is driven at 3600 by an external motor. Power output should increase linearly with the rotor length and as the square of the rotor diameter.
Patent GB-959554-A (GB)
Title: Control means for vehicle headlamps
Inventor: SUTHERLAND WILLIAM DRUMMOND
IPC: B60Q1/14
Filed: 1960-01-18
Abstract: 959,554. Control systems for vehicle lighting. C.A.V. Ltd. Jan. 11, 1961 [Jan; 18, 1960] ,  No. 1697/60. Heading H2H. A vehicle lighting system comprising a headlamp having main and dipped beam filaments is provided with means whereby when the headlamp is initially switched on the dipped beam filament is energized irrespective of the position of the dip switch. The apparatus includes a relay having an operating winding 6 and a holding winding 13 together with a normally open contact 8 and a normally closed contact 11. Further the current flowing in the main beam filament 1 when resistor 7 and/or winding 6 is in series therewith is insufficient to cause illumination of the main beam. Thus, when the headlamp switch 9 is closed the dipped beam filament 1 will be illuminated irrespectively of the dip switch 12. Thereafter, operation of the dip switch 12 will cause illumination of the main and dipped beam filaments alternatively. Lamp 14 provides an indication of main beam illumination.
Patent GB-552625-A (GB)
Title: Improvements relating to the internal grinding of screw threads
IPC: B24B19/02
Filed: 1942-02-10
Abstract: 552,625. Grinding machine gauges. CHURCHILL MACHINE TOOL CO., Ltd., and ASHBRIDGE, H. H. Feb. 10, 1942, No. 1772. [Class 60] A setting gauge for grinding an internal screw thread comprises a cylinder c, threaded externally to the same pitch as the partially threaded bore, which engages the thread to be ground, the grinding wheel b being brought into engagement with a projecting part of the gauge on the opposite side to that engaged by the workpiece a whereby the normal feed and traverse will bring the crest of the thread form on the grinding wheel into the root of the thread in the bore.
Patent GB-176947-A (GB)
Title: Improvements in mountings for the driving wheels of cycles and other vehicles
IPC: B62K25/02
Filed: 1921-01-11
Abstract: 176,947. Low, A. M., and Low Engineering Co., Ltd. Jan. 11, 1921. Wheels, facilitating detachment of. - A wheel mounting for cycles and other vehicles, more particularly motor-cycles, comprises the combination of a driving bevelwheel e provided with laterally projecting elements, such as pins e<1>, to engage apertures in one of the hub flanges, a brake drum p containing expanding shoes q carried by the other hub flange, and a bolt j extending through the bevel-wheel, the hub, and the brake drum to hold the parts in driving-relation without lateral pressure between the hub and the bevel-wheel, the parts being so arranged that upon sufficient withdrawal of the bolt, the hub, its sleeve, and the brake drum and shoes can be removed without disturbing the bevel-wheel. The brake shoes are actuated by a cam-piece s carried by a stud t. The bolt engages with a nut o which is adapted to be screwed off the end of the bolt when the wheel is to be released. According to the Provisional Specification, gearing other than bevel driving-gear may be employed.
Patent GB-565633-A (GB)
Title: Stud and means for arc welding the same to a support
IPC: B23K35/02
Filed: 1943-02-05
Abstract: 565,633. Welding studs to plates &c. NELSON, E. F. Feb. 5, 1943, No. 1961. [Class 83 (iv)] A stud 2 to be arc welded to a metal support, such as a deck-plate 3, beam or other structural member, has a recessed end 5 containing a flux over which is disposed a sheet-metal cap 7 with a point 8 to facilitate placing of the stud in a predetermined position on the support. The stud end is also provided with a point 4, preferably central, for ensuring that heating extends evenly outwards to the edge of the end surface 6 which is upset or spun inwardly round the edge of the cap. The flux may consist of a mixture of powdered iron and aluminium. The stud is held in the resilient jaws 22 of a chuck and passes through the bore of a porcelain or other refractory ferrule 12 which is connected to the chuck by a coiled spring 18, the ends of which are close and grip respectively a tapered neck 16 on the ferrule and the threaded portion of the chuck jaws. The ferrule has a portion 14 of the bore enlarged and conserves the heat round the end of the stud and confines flux and molten metal. Its position is adjusted by turning it with the spring on the threaded portion of the chuck jaws so that when the stud is pushed against the plate and then withdrawn to strike the arc, the ferrule is resiliently pressed against the plate. If welding is effected through an aperture in a wooden plank, the ferrule may serve as a centring device, but in other cases a punch mark is provided on the work. In the former case, the ferrule, which is largely destroyed by the heat, may be kept in position after welding, but in other cases it is knocked off the stud.
Patent GB-543381-A (GB)
Title: An improved hand-operated grab for handling incendiary bombs and the like
IPC: A62C3/06
Filed: 1941-02-17
Abstract: 543,381. Handling incendiary bombs. WHITHAM, A. Feb. 17, 1941, No. 2092. [Class 61 (ii)] An incendiary bomb handling device comprises a long shaft a carrying a forked jaw d fixed to the lower end and a jaw e pivoted thereto at f and operated by a rod g and lever handle i pivoted to the shaft at k, a compression spring l normally holding the pivoted jaw open. In the modification shown in Fig. 3 the jaws are arranged so that the spring l normally holds the pivoted jaw n in closed position and a shield p carried by a spring grip q slidable along the shaft is adapted to be clamped in any position by a bolt r.
Patent GB-224769-A (GB)
Title: Improvements in control mechanism for motor-actuated doors
IPC: E05F15/00
Filed: 1924-01-28
Abstract: 224,769. Dehn, F. B., (National, Pneumatic Co.). Jan. 28, 1924. Operating and controlling doors electrically.-To reverse the movement of a. door when in closing it encounters an obstruction, the. lower end of a shoe member 2 carried by the front edge of a sliding door 1 is provided with a movable, contact member 22 that is arranged to complete an electric circuit to reverse the door-operating motor when the shoe encounters an obstruction in the form of a foot or heel of a passenger. The shoe member is also fitted with the usual wires 3, 7 to form a flexible buffer member throughout its length, the wires being arranged to be moved into contact to reverse the motor when the shoe connects with the body of a passenger. The wires 3, 7 and the contact members 24, 25 are connected through conducting wires 4, 8 with the motor. In the arrangement shown, the shoe 2 is pivotally mounted on the front edge of the door by an arm 20 which is forced outwardly by a, spring 27. This arm carries a rod formed with a conducting portion 22. When the obstruction encountered is at the lower edge of the door, the member 2 is moved bodily and the member 22 slides through the contacts 24, 25 to make the circuit for reversing the motor. If the obstruction is at a higher level the member 2 being flexible provides for the wires 3, 7 to make contact for the reverse movement of the door.
Patent GB-289529-A (GB)
Title: Improvements in or relating to repulsion motors
IPC: H02K27/06
Filed: 1927-01-27
Abstract: 289,529. J÷rgensen, C. Jan. 27, 1927. No Patent granted (Sealing fee not paid). Alternating - current commutator machines. -In order to maintain approximately constant the speed of a repulsion motor, the rotor is prov i d e d with an additional shortcircuited winding, the bars a of which are located beside the main winding b as shown in Fig. 1, or in recesses in the teeth between the main winding slots as shown in Fig. 2. According to the Provisional Specification, the bars of the short-circuited winding may be situated directly over or under the main winding coils.
Patent GB-450320-A (GB)
Title: Improvements in and relating to cam-operated multiple contact electric switches
IPC: H01H1/26
Filed: 1935-01-25
Abstract: 450,320. Snap action switches. HESKETH, B., c /o McMichael Radio, Ltd., Wexham Road, Slough, Buckinghamshire. Jan. 25, 1935, No. 2455. [Class 38 (v)] In a cam-operated multiple-contact switch, pairs of contact blades 1 are mounted as shown in Fig. 4 by means of pressed-up portions 2 engaging slots in insulating members 4, retaining plates 6 with large slots then being put in position and the whole clamped by channelshaped clamps 8. The blades are actuated by cams 10 on a shaft 12, Fig. 10, which may be rotated by a handle. A stop 30 on the shaft co-operates with a plate 29 to limit the movement, and a spring 28 co-operates with the square-sectioned shaft to determine the switch positions. The cams are mounted on the shaft in the desired positions by a special jig, Figs. 7, 8 (not shown), and a special tool, Fig. 9 (not shown), then clinches the cams firmly in position by making indentations 13 in the corners of the shaft, a small amount of metal thus being forced up against the sides of the cam.
Patent GB-383114-A (GB)
Title: Improvements in and relating to pulling jacks for wheels
IPC: B25B27/02
Filed: 1932-01-27
Abstract: 383,114. Removing wheels from shafts. THOMSEN, A. C., 9, Kannikegade Hillerod, Denmark. Jan. 27, 1932, No. 2500. Convention date, July 22, 1931. [Class 61 (iii).] A differential screw device for withdrawing wheel hubs from shafts comprises a sleeve 3 split, coned and threaded at the end for clamping by means of a ring 4 on the threaded hub end 23, inside of which sleeve 3 works a tubular stem 1 threaded inside and outside and with a quicker pitch thread on the outside, the inside thread engaging a threaded spindle 18 with head 19 adapted to engage the end 24 of the taper shaft. In operation the end of sleeve 3 is clamped to the hub and the tubutar stem 1 is rotated by means of its head 5, a pin 20 on head 19 engaging slots 22 in the sleeve to prevent the spindle 18 from rotating.