baber/WOPTO huggingface dataset:
Patent GB-633889-A (GB)
Title: Coffee maker
IPC: A47J31/043
Filed: 1947-07-10
Abstract: 633,889. Coffee maker. SUNBEAM CORPORATION. July 10, 1947, No. 18281. Convention date, Oct. 27, 1938. [Class 129] In a vacuum-type coffee maker, the filter frame 48 is adapted to be tightened on its seat by a rod 35 adjustably and detachably secured to the bottom of the lower pot 16, and carrying a freely rotatable collar 42 which engages in an axial sleeve 53 of the filter frame. The collar 42 is free to move on the rod between the spaced abutments 39, 41, and the sleeve 53 is kept in position on the collar 42 by means of a spring ring 44 mounted in the annular groove 43 on the collar. The upper bowl 29 is provided with a cover 64 having an operating knob 65 connected to a channel-section member 67 within the cover, the member 67 being adapted to engage the hook-shaped upper end 57 of the rod 35 so that the rod may be rotated in either direction by means of the knob 65. The cover 64 may also be used as a cover for the pot 16. The filter assembly 48 comprises a cylindrical side wall 49 and a transverse member to which the axial sleeve 53 is attached. A filter cloth 54 is spread over the upper part of the frame 'and secured thereon by means of a drawstring 55.
Patent GB-109366-A (GB)
Title: Improvements in Valves.
Inventor: NEILSON ROBERT MORRISON
IPC: F04B53/10
Filed: 1916-12-21
Abstract: 109,366. Neilson, R. M., (Brownlie, T. A M.). Dec. 21, 1916. Check-lift valves; fluid-actuating mechanism. - A non-return valve arrangement for the suction pipes of tube well pumps, &c., comprises a chest or casing b, a lift disk valve g ccntrolling ports c in the bottom of the casing, and a sleeve valve o controlling ports p in the sides of the casing. A trident, or spider m connected to the sleeve o rests on the disk so that both valves open when the disk is raised. The sleeve valve o may be in the form of a double-beat valve. In the modification shown in Fig. 4, the valve members g, o are connected by multiplying levers u, w so that the lift of the sleeve valve is greater than that of the disk valve. In every case, the greatest lateral dimension of the casing is made very little greater than the diameter of a circle of the same area as the aggregate passage area past the two valve members when open.
Patent GB-1502319-A (GB)
Title: Direct current commutator machines
IPC: H02P7/29
Filed: 1975-05-02
Abstract: 1502319 Control of DC machines W KO. FINK 2 May 1975 [2 May 1974] 18335/75 Heading H2J A D.C. machine, having a shunt field winding 1, armature 2 and brushes 3, 4 co-operating with the commutator of the armature, is controlled by electronic switches 5, 6 connected into the armature winding circuit between the brushes, the switches 5, 6 being triacs or antiparallel-connected thyristors which are fired in dependence on the position of the armature and turned off by the reversal of current in the armature winding occurring at commutation The firing pulses may be obtained from a mechanical breaker unit 10 coupled to rotate with the armature 2 or from a contactless electronic pulsing unit (not shown) producing pulses in accordance with the instantaneous angular position of the armature. Pulses from the unit 10 are coupled from its brushes to switches 5, 6 through the brushes 3, 4 and resistors 13, 14 connected to the control electrodes of the switches 5, 6. Pulses from the electronic unit are coupled to the switches 5, 6 through slip rings or through inductive coupling means comprising stator coils connected to the pulsing unit and fixed relative to the armature and rotor pick-up coils connected to the control electrodes of switches 5, 6 and arranged to rotate with the armature. The armature current is varied by adjusting the instants at which the switches 5, 6 are fired, the mean current thus being determined by the corresponding angular position of the armature relative to that at which switches 5, 6 are turned off. The instant of firing may be varied, in the case of the breaker unit 10, by adjusting the positions of the brushes 11, 12. High resistance coils 7, 8, which may be in the form of auxiliary armature windings, have voltages induced therein which compensate for those produced by the current reversal at commutation, so protecting the switches 5, 6 against such voltages. Further protection against excess current may be provided by a centrifugal switch, which short circircuits the switches 5, 6 at a low speed when the machine is operating as a motor or at a high speed when it operates as a generator. Alternatively the centrifugal switch may short circuit a resistor in series with the armature when the machine reaches a predetermined speed, e.g. to limit starting current for operation as a motor. The switches 5, 6 are displaced by 180 electrical degrees and, in the case of a lap wound machine, are increased in number, with the same displacement, according to the number of machine poles, e.g. a four pole, four brush machine will require four switches, one for each armature winding path. In the case of a wave wound machine, only two switches are required irrespective of the number of poles, each switch controlling a plurality of armature winding paths.
Patent GB-498299-A (GB)
Title: Claw hammer
IPC: B25D1/04
Filed: 1938-05-16
Abstract: 498,299. Claw hammers. MURDOCH. J. M. May 16, 1938, No. 18378/37. [Class 61 (ii)] A claw hammer with a throat member 5 provided with a dovetail recess 6 so arranged as to engage the head 7 of a nail 10 and to enable the shank 8 to be wedged in the claw 2 has the member 5 secured to the hammer shaft 4 by a wood screw 12.
Patent GB-777470-A (GB)
Title: Method of sticking wooden floor coverings to concrete
IPC: E04F15/04
Filed: 1954-06-23
Abstract: Wooden floors are stuck to concrete underlayers by means of an adhesive which consists of 33 to 95 per cent of polyvinyl acetate dispersion containing 50-60 per cent vinyl acetate, 2.5 to 33 per cent of polyvinyl alcohol solution, e.g. of 5 to 25 per cent concentration, and 2.5 to 33 per cent of fillers and modifiers. Fillers specified are bean, vetch, barley, rye and pea flour, potato and cereal starch, chalk, bentonite, china clay and lithopone. Modifiers specified are plasticizers such as glycerine, glycols, tricresyl phosphate, phosphates and rubber latex; fibrous materials, e.g. waste textile fibres, in loose or fleece form; thickening agents such as borax, boric acid, inorganic sulphates and carbonates; stabilizers such as formaldehyde, furfural and sodium bichromate; dyes and pigments such as aniline dyestuffs and ochres; silicone compounds; and freezing-point depressants such as alcohols.  The adhesive is particularly useful for mosaic parquetry as it bonds the inlays to each other as well as to the base.
Patent GB-390141-A (GB)
Title: Improvements relating to coating metallic bodies with an alloying metal
IPC: C25D5/50
Filed: 1931-06-25
Abstract: 390,141. Electroplating. ELECTRIC FURNACE CO., Ltd., 17, Victoria Street, London.-(Assignees of Northrup, E. F. ; Ajax Park, Trenton, New Jersey, U.S.A.) June 25, 1931, No. 18420. Convention date, June 27, 1930. Void [Published under Sect. 91 of the Acts]. [Class 41.] A metal, such as iron or steel, is provided with a hard surface layer by coating it electrolytically with another metal or metals, e.g. chromium, and fusing the coating to the foundation metal by the inductive action of highfrequency currents traversing an induction coil in proximity to the metal. The method is particularly applicable to the formation of hard layers on the interior surfaces of cylinders of automobile engines or on the exterior surfaces of rolls. In treating the interior of a cylinder 10, Fig. 1, which is coated with a layer of chromium or of chromium and nickel, an induction coil 11 is arranged coaxially inside the cylinder and spaced therefrom by an insulating layer 12. In treating a roll 23, Fig. 5, a coil 11<1> is arranged coaxially around the roll and spaced therefrom by an insulating layer 12<1>. The cylinder or roll is preferably heat treated before coating at a temperature higher than that to which it will be subjected in working and is then ground to the exact dimensions. Electrical circuits for obtaining the necessary rate of heat input are described and illustrated in Figs. 4, 6 and 7 in which 14, 15 represent the leads from the electric supply, 11, 11<1>, 11<2>, the induction coils, 16, 16<1>, 162 additional resistances, and 17, 17<1>, 172 capacities.
Patent GB-148690-A (GB)
Title: Improved construction of door posts, sills, styles, heads, mullions, transomes and the like used in buildings
IPC: E06B1/24
Filed: 1919-07-24
Abstract: 148,690. Judge, M. H., and Judge, M. July 24, 1919. Door jambs; window frames.-Door posts, sills, stiles, mullions, transomes, &e. are made from reinforced or plain concrete and wood, the wood being positioned so as not to be exposed to the weather. A window stile is shown in Fig. 2 formed from a plain or ornamental concrete slab 1 with a fixing groove or rib 2 and wooden flanges 10, 11, 13 in the inner side of the usual construction. A mullion for a casement sash is shown in Fig. 5 and a post or head for a door in Fig. 9. The wooden facings are secured to the concrete by means of ribs and grooves or 'by screwing to plugs moulded in the concrete &c. The sill for a door may be all concrete.
Patent GB-993800-A (GB)
Title: Improvements in high pressure seals
IPC: F16J15/56
Filed: 1962-05-14
Abstract: 993,800. Seals; pneumatic springs. H. P. DOETSCH. May 14, 1962 [May 19, 1961], No. 18513/62. Headings F2B and F2S. A high-pressure seal in the cylinder 11 of a gas spring, Fig. 5, comprises a radially-stressed, highly resilient, abrasion-resistant and flat sealing ring 1 which is arranged with its inner and outer periphery in sealing engagement with the piston-rod 7 and cylinder 11 respectively and in its flat operative condition is urged by the gas pressure against an abutment 9 held against axial movement away from the ring; in its initial unstressed condition, Fig. 1, the ring has its central hole of frusto-conical shape with the larger diameter corresponding to that of the piston-rod and the outer periphery may be of corresponding frusto-conical shape so that in operation the ring is flattened and the internal forces generated in it compress the periphery of the hole at one side against the piston-rod and the outer periphery of the ring at the other side against the cylinder. The ring is fitted on the piston-rod between the abutment 9 and a guidering 12 loosely slidable in the cylinder, the abutment being in the form of a washer as shown or an end flange on the cylinder. Filling of the cylinder with gas is effected through the annular passages initially separating the parts 11, 9, 1, 12 while the piston-rod is brought to bear on a stop 13; on removal of the stop the gas pressure urges the piston-rod inwardly and the seal to its flattened sealing condition. The ring may be formed of a plastic such as ethylene glycol-adipic acid polyesters, if desired of oil-absorbing type or combined with high-alloyed nickel chromium steels; the ring may also be coated with finelyground chromium. The ring may be stamped from the material while the latter is supported on a soft backing penetratable by the tool and the progress of the tool through the material may be briefly interrupted before it completely penetrates the material so as to produce a hole with the cross-section shown in Fig. 7.
Patent GB-586176-A (GB)
Title: Arrangements for selecting electric pulses from a pulse train in accordance with their amplitude
IPC: H04J7/00
Filed: 1944-09-12
Abstract: 586,176. Pulse modulation; radio receiving circuits. STANDARD TELEPHONES & CABLES, Ltd. Sept. 27, 1944, No. 18521. Convention date, Dec. 15, 1942. [Class 40 (v)] In a filtering arrangement for removing from a pulse train pulses of greater amplitude than the wanted pulses, the pulses of greater amplitude are distorted by producing sharp amplitude maxima defining the leading and trailing edges thereof, the pulses are then filtered to eliminate the higher harmonics, thereby reducing the amplitudes of the distorted pulses below the amplitude of the wanted pulses and the unwanted pulses are then removed by clipping at a level above their maximum amplitude. As shown, the pulses are applied to an amplifier 10, Fig. 1, which may comprise any arrangement giving a characteristic as shown at 15, Fig. 2, i.e. where an increase of input potential causes the output potential to increase to a maximum 41 and then to decrease toward zero at 42. The amplifier 10 comprises an input triode 17 coupled by condensers 25, 29 to push-pull connected triodes 21, 22. The triodes are separately biassed over resistors 27, 30, triode 21 being in the absence of a signal, biassed beyond cut-off and triode 22 being biassed to permit a normal plate current. As the grid 14 of tube 17 is made increasingly negative by an increasing input pulse potential, the grid 24 of tube 22 is made more negative, thereby reducing its anode current and increasing the output potential of point 33 as indicated between points 40, 41 on curve 15. At the same time the grid 23 of tube 21 is made less negative and as tube 22 reaches the cut-off point tube 21 begins to conduct. The anode current of tube 21 then increases with further increase of the input potential causing the potential of point 33 to fall as indicated between points 41, 42 of curve 15, Fig. 2, until at 42 the tube 17 reaches the cut-off point. The characteristic curve 15 need not be symmetrical as shown, however. The gain of the amplifier 10 is adjusted so that when a series of pulses 51 ... 54, derived e.g. by demodulation of a carrier wave, is applied thereto, the amplitude of the wanted pulse 51 is brought near and preferably slightly under the maximum point 41 of curve 15. The output pulse 51a is thereby produced in substantially the same shape as the input 51. The unwanted pulses 52, 53 of greater amplitude than 51, extend beyond the point 41 and cause sharp amplitude maxima 52a, 52b, 63, 64, corresponding to the leading and the trailing edges of the input pulses 52, 53. The unwanted pulse 54, of lesser amplitude than 51, produces a reduced output pulse 54a. By suitably filtering out the higher harmonics at 12, Fig. 1, the sharp pulse portions 52a, 52b ... are reduced in amplitude as indicated by the wave 70. The latter is then clipped at 13, Fig. 1, along line 71 of wave 70 to give the final output wave 80 containing only pulse energy 81, corresponding to the wanted pulses 51.
Patent GB-774871-A (GB)
Title: Improvements in or relating to the production of polymers
IPC: C08G61/00
Filed: 1953-07-03
Abstract: Liquid or resinous hydrocarbon polymers are made by subjecting a steam-cracked petroleum fraction having an initial boiling-point of 15 DEG  to 120 DEG  C. and a final boiling-point of 140 DEG  to 200 DEG  C., to a heat treatment in the liquid phase at a temperature of 150-300 DEG  C., and a pressure between 50 and 2000 lbs/sq. inch for a period of at least 60 minutes and distilling the product to recover the polymer fractions, e.g. a distillate polymer fraction and a residual polymer fraction.  The hydrocarbon fraction is preferably obtained by steam-cracking a petroleum naphtha boiling in the range 90 DEG  to 250 DEG  C.  The distillate polymer fraction may be further fractionated under reduced pressure and/or in the presence of steam.  The low molecular weight liquid polymers may be used as a component in a drying oil, as a turpentine substitute, an additive to vegetable drying oils or incorporated in coating compositions containing natural or synthetic resins. The resinous polymers may be used for coating surfaces admixed, if desired, with vegetable drying oils or semi-drying oils or other plasticizers.ALSO:Low molecular weight liquid hydrocarbon polymers are made by subjecting a steam-cracked hydrocarbon fraction of petroleum origin having an initial boiling point in the range of 15 DEG  to 120 DEG  C. and a final boiling point in the range of 140 DEG  to 200 DEG  C. to a heat-treatment in the liquid phase at a temperature in the range 150-300 DEG  C. and a pressure between 50 and 2000 lb/sq. in. for a period of at least 60 minutes and distilling the product to recover the polymer fraction.  The hydrocarbon fraction is preferably obtained by steam-cracking a petroleum naphtha boiling in the range 90 DEG  to 250 DEG  C.  The polymer fraction may be further fractionated under reduced pressure and/or in the presence of steam. The liquid polymers may be used as a component in a drying oil, as a turpentine substitute, an additive to vegetable drying oils or incorporated in coating compositions containing natural or synthetic resins.
Patent GB-948239-A (GB)
Title: Method of embedding a metallic grid in a body of semiconductive material
Inventor: SHOCKLEY WILLIAM
IPC: H01L21/00
Filed: 1962-05-15
Abstract: 948,239. Semi-conductor devices. CLEVITE CORPORATION. May 15, 1962, No. 18741/62. Drawings to Specification. Heading H1K. A metallic grid is embedded within a layer of semi-conductive material by applying the grid to one surface of a wafer of semi-conductive material and subsequently epitaxially growing a layer of semi-conductive material on the surface to embed the grid in the epitaxially grown layer. The grid may contain impurities which diffuse outwardly so that the grid is surrounded by a region having a higher impurity concentration than the surrounding portion of semiconductive material. The invention is particularly directed to reducing the base spreading resistance in transistors and in four-layer switching devices.
Patent GB-201377-A (GB)
Title: Improved stay or stiffener for trousers
IPC: A47G25/66
Filed: 1922-08-05
Abstract: 201,377. Grimes, S. A. J. Aug. 5, 1922. No Patent granted (Sealing fee not paid). Stiffeners.-A stiffener for insertion horizontally in the turned-up ends of trouser legs, comprises a resilient strip A, Fig. 1, of sheet metal having spikes C for engaging the fabric. Fig. 3 shows a modification in which V-shaped portions E are cut and bent to shape. Holes D may be provided for sewing.
Patent GB-1202213-A (GB)
Title: Improvements in or relating to means for inhibiting corrosion of graphite articles in a nuclear reactor
Inventor: LIND ROBERT
IPC: G21C15/08
Filed: 1967-04-24
Abstract: 1,202,213. Moderator Structures. UNITED KINGDOM ATOMIC ENERGY AUTHORITY AND NUCLEAR POWER GROUP Ltd. 18 April, 1968 [24 April, 1967], No. 18838/67. Heading G6C. In a nuclear reactor graphite 'moderator block 1, the central axial channel 2 forms a passage for the carbon dioxide gas coolant. Blocks may be keyed together by keyways 3. Gas flows through the ducts 4, to enable the corrosion inhibiting constituent in the gas to reach the block inner regions. Access to the duets 4 may be provided by transverse ducts intersecting the longitudinal ones. Connecting channels may be provided by grooves in the block end faces. The corrosion inhibitor may be methane.
Patent GB-221614-A (GB)
Title: Improvements in apparatus for the measurement of the frequency of alternating (or pulsating) electric currents
IPC: G01R23/02
Filed: 1923-07-23
Abstract: 221,614. Campbell, A. July 23, 1923. Filter, rejector, and separator circuits.-Relates to a frequency-measuring circuit applicable also for suppressing any desired frequency component in a composite wave form. A source A of alternating or pulsating current of which the frequency is to be determined is connected in series with a non-inductive resistance P and one coil B of a mutual inductance M. The second coil C of this mutual inductance and one coil D of a second mutual inductance N are connected in series with a resistance R, of which a portion S is included in a circuit containing the second coil F of the mutual inductance N, the resistance P, and a telephone, vibration galvanometer, or other detector T. The mutual inductances M, N and the resistances P, R, S are adjusted to give a null effect in the telephone T, the frequency being then calculated from the known values of these quantities. 'The source A and telephone T may be interchanged, the same conditions of balance holding. For a direct-reading frequency meter the mutual inductance M may have a fixed value. the mutual inductance N being variable and calibrated directly in terms of frequency. To obtain a series of different scale ranges, the resistance R may have a series of different values, or the mutual inductance M may be given different values, the resistance S being at the same time altered so that the product M, S is constant. To obtain an even scale, the values of the mutual inductances M, N may be kept constant and the resistances P, R, S varied proportinally to one another. The coils B, C are preferably mounted so that the mutual inductance between these coils and the coils D, F may be adjusted to zero. The self-inductance of the resistance P may be balanced bv introducing an equivalent mutual inductance between the coils B, F by slightly altering their relative positions. To reduce temperature errors the resistances added to the resistance R for different scale ranges may be made adjustable in accordance with the observed temperature. A number of nearly constant frequencies may be dealt with by adding resist. ance in steps in the circuit, of the coils C, D.
Patent GB-1116916-A (GB)
Title: Improvements in or relating to contraceptive devices
IPC: A61F6/14
Filed: 1966-04-29
Abstract: 1,116,916. Intra-uterine devices. ORTHO PHARMACEUTICAL CORPORATION. 29 April, 1966 [30 April, 1965], No. 18845/66. Heading A5R. An article, such as an intra-uterine contraceptive device, is of a resilient synthetic plastics material and is either in the form of a torus (as shown), or is of elongate shape overall (Figures 8-14, not shown) and comprises one or more elongate parts integral and intersecting with the elongate article, there being a web 23, 24 (35, 36, 44, 46) formed in the torus or at the junction of the intersecting parts to facilitate bending. The inside surface of the torus-shaped article may be concave.
Patent GB-724745-A (GB)
Title: An electrically heated propeller de-icer
IPC: B64D15/12
Filed: 1953-07-08
Abstract: 724,745. Electrically-heated de-icers. WING- FOOT CORPORATION. July 8, 1953 [Dec. 12, 1952], No. 18924/53. Class 39 (3). An electrically-heated propeller de-icer comprises a body of resilient rubber containing a' conductive rubber heating element and at least one wire containing heating element. The de-icer is preferably in. sheet form and in Fig. 2 is shown attached to the leading edge of a propeller blade, a conductive rubber element 8 being in the central portion of the de-icer and a wire heating element 9, 9 being disposed on either side of the rubber element 8. In Fig. 5, wire elements 26 are formed of a number of parallel connected U-shaped wires, and in Fig. 4 (not shown) the central area of the heating unit comprises an additional wire element. In Fig. 6 (not shown) the heating wires extend parallel and longitudinally of the de-icer body. A further modification, Fig. 7, has wire heating elements 30 of which the wires are serpentine shaped. The area of the conductive rubber heating element preferably does not exceed 33 per cent of the de-icing area and different degrees of heat from different areas of the de-icer may be provided by appropriate choice of the various heating elements when constructing the de-icer.
Patent GB-854699-A (GB)
Title: Improvements in or relating to electric advertising signs
IPC: F21V8/00
Filed: 1958-06-13
Abstract: 854,699. Changing signs. GOODMAN, M. June 15, 1959 [June 13, 1958], No. 18940/58. Class 3(1) An edge-illuminated panel is mounted on a slotted base containing a fluorescent tube 28 which is rotated by an electric motor 7 through reduction gearing 8-13 and is energized through conventional slip-ring and brush connector means. The tube is provided with contrasting translucent or transparent bands in the form of longitudinal strips or patterns.