baber/WOPTO huggingface dataset:
Patent GB-559555-A (GB)
Title: Frequency modulation radio receivers
IPC: H03J3/14
Filed: 1942-08-21
Abstract: 559,555. Frequency modulation. PHILCO RADIO & TELEVISION CORPORATION. Aug. 21, 1942, No. 11791. Convention date, Oct. 21, 1941. [Class 40 (v)] To enable a frequency-modulation receiver to be accurately tuned, an audio amplitude modulation is imposed on the received wave and the tuning is adjusted until a minimum audio response is heard in the receiver, or a minimum effect observed in an indicator. As shown, the I.F. amplifier 13 is coupled to a balanced frequency discriminator, of the kind described in Specification 559,967, the output of which is fed to the audio stages. An audio note, which may arise from the unsmoothed output of a mains supply rectifier 29 is fed through a control switch 36 to the screen grid of the amplifier 13 thereby amplitude-modulating its output. When the set is accurately tuned this amplitude modulation produces little or no effect on the output of the discriminator, but when the set is off tune, the note is heard. A small condenser 35 and resistance 37 may be provided to favour harmonics of the mains frequency. The note frequency may control a visual indicator, which may be arranged to respond only to the particular note frequency employed.
Patent GB-149417-A (GB)
Title: Improvements in or relating to vacuum cleaning apparatus
IPC: A47L5/06
Filed: 1919-05-10
Abstract: 149,417. O'Neill, F. R. May 10, 1919. No Patent granted (Sealing fee not paid). Vacuum cleaning-apparatus.-In portable apparatus wherein a rotary fan is operated through gearing by a crank-handle &c., the fan draws the dust-laden air through a screen or screens interposed between the fan and the air inlet; two or more fans may be employed; the fan may be of the disk-supported blade type. As shown in Fig. 2, a fan a enclosed in a snail-shaped casing c draws air in axially through a pipe d connected, through a dust chamber g furnished with a filtering screen and an inspection window l, with a pivoted inlet pipe m having a flared mouth within a casing o travelling over the surface to be cleaned, and delivers it through an outlet e covered by a canvas &c. bag f. The fan is driven through chain-and-sprocket wheels t, u by a crank handle z, the gearing being enclosed within a cage q lined with leather, sheet metal &c. The frame is provided on the fan casing side with a leather &c. loop at the top and a handle at the middle, for support. Fig. 4 shows the fan as consisting of a disk carrying flat blades 18 tangential to the surface of a cone co-axial with the fan spindle, the edges of the blades remote from the disk being the longer. The fan casing may be formed, as shown in Fig. 8, in two halves with partitions 38 forming with the casing wall an induction pipe 39, or merely dividing the air exit into two parts. In a modification, an auxiliary fan in a separate casing may supply air to an eduction pipe such as the pipe 39; or two fans may be employed, one on each side of the frame q, each connected with a dust chamber or with the suction mouth; or a fan or fans may be employed so as to create induced draught only; or two fans may be employed on separate spindles in casings one below the other, the casings being arranged at one side of an intake chamber from which they are screened by canvas, and delivering into a common outlet pipe with a canvas bag f, or being arranged to induce a draught from the intake chamber to a dust chamber. Fig. 6 shows the casing containing a brush 24 and the arcuate suction mouth n which is pivoted between wheels 22; the brush is driven by a chain from one of a pair of wheel 23 at a greater peripheral speed than the speed of translation; the mouth n is large enough to approach the brush closely at any angle at which the apparatus is propelled. The casing o extends close to the ground except in front, and is provided with a rubber tube forming a buffer.
Patent GB-880623-A (GB)
Title: Lubrication of the depth of field in photographic objectives
IPC: G03B17/02
Filed: 1959-04-08
Abstract: 880,623. Depth of field indication in photographic objectives. SCHNEIDER, M. C. April 8, 1959 [April 17, 1958], No. 11833/59. Class 98(1). A photographic objective has means for indicating two sets of depth of field limits for each of a number of diaphragm settings, the limits of one set corresponding to a smaller circle of least than the other. In those objectives in which the depth of field is indicated by means of a set of stationary depth of field graduations co-operating with a rotatable focusing scale, a second set of such graduations preferably in a different colour and indicating wider limits, may be either superimposed on (Fig. 1 not shown) or provided along side (Fig. 2 not shown) the first. In the second of the two alternatives the two sets of depth of field graduations are circumferentially spaced around a member rotatably mounted on the objective and adjustable to either of two predetermined angular positions according to which set of graduations it is desired shall co-operate with the focusing scale. In a modification (Fig. 3 not shown) the two sets of depth of field graduations are only provided with one set of reference numerals but two sets of leading lines indicate the alternative limits of the depth of field on the focusing scale. In a mechanical embodiment shown in Fig. 4 two rings e and f are rotated in opposite directions when a diaphragm setting member (not shown) is adjusted and respectively carry two masking plates g and h, the edges g<SP>1</SP> and h<SP>1</SP> of which indicate limits of the depth of field by uncovering varying amounts of an underlying focusing scale (not shown). Additional plates i and j for indicating a second set of depth of field limits are controlled respectively by two levers k and l, which are respectively pivoted on the rings e and f and co-operate with stationary cams m and n. In the embodiment shown in Figs. 5 and 5a a plate p bearing stepped graduations p<SP>1</SP> is mounted in known manner on objective o so as to be axially displaced by adjustment of a diaphragm aperture setting ring s, two different portions of said graduations being visible in the spaced windows q and q<SP>1</SP> for indicating two sets of depth of field limits on a rotatable focusing scale r<SP>1</SP>. In modifications of this embodiment, the plate p may carry two sets of differently coloured graduations p' which are made visible in a single window on the objective, and the stepped graduations may be replaced by line graduations.
Patent GB-549273-A (GB)
Title: Improvements in or relating to muffle kilns
IPC: F27B5/06
Filed: 1941-09-17
Abstract: 549,273. Muffle kilns. BONNYBRIDGE SILICA & FIRECLAY CO., Ltd., and Mc- BRYDE, W. Sept. 17, 1941, No. 11889. [Class 51 (ii)] In a circular muffle kiln of the kind comprising an annular wall 2 with fireplaces 5 and heating flues 3, 4 leading to flues beneath the floor and to a central chimney 1, the flues 6 beneath the floor are of spiral shape. The side walls 7 of the spiral flues may terminate short of the chimney 1 so as to provide an annular chamber 8 around the base of the chimney which is formed with spaced openings 9 or the flues may communicate directly through the openings 9 with the chimney. The spiral flues 6 gradually decrease in width towards their exits.
Patent GB-1080853-A (GB)
Title: Method of degasifying coal seams
IPC: E21F7/00
Filed: 1966-03-18
Abstract: Natural gas is removed from coal seams by forcing a low-boiling point liquid under pressure into the rock to fracture it, and pumping off, or sucking out or allowing to escape, the natural gas with the liquid, which has passed into the gaseous phase due to relief of pressure and to the rise in temperature of the fractured rock. Preferred liquids are the halogen-substituted hydrocarbons used as refrigerants, and ammonia, carbon dioxide, sulphur dioxide and liquefied petroleum gas are mentioned.  A supporting material may be added to the liquid.
Patent GB-947057-A (GB)
Title: Improvements relating to conveyors
Inventor: ANDERSON DOUGLAS GRAEME FORDYC
IPC: B65G13/00
Filed: 1960-04-05
Abstract: 947,057. Rollerway conveyers. ROWNSON CONVEYORS Ltd. March 22, 1961 [April 5, 1960], No. 12099/60. Heading B8A. Spindle 6 of the roller 5 of a rollerway conveyer is supported by side member 1 of the conveyer frame and is held in place by clamping member 7. Member 7 is three sided and is clamped on top of side member 1 by bolts 10 and is formed with slots 9 through which pass respective spindles 6. Each clamping member thus secures a plurality of rollers by means of their spindles.
Patent GB-602311-A (GB)
Title: Improvements in or relating to systems for controlling the pressure in the cabin of an aircraft or the like
IPC: B64D13/04
Filed: 1944-06-26
Abstract: 602,311. Fluid-pressure servomotor-control systems. WESTLAND AIRCRAFT, Ltd., and WIDGERY, W. M. June 26, 1944, No. 12115. [Class 135] [Also in Group XXXIII] A pressure control system for aircraft cabins and the like incorporates two cabin pressure release valves in series, controlled independently. An outlet b to a chamber w from the cabin a is controlled by a valve d mounted on the movable wall of a bellows f while the outlet y from the chamber to the atmosphere is controlled by a similar valve v and bellows u. A further outlet c from the cabin leads through restricted orifices g, k to similar separate containers i, j, the pressure in which is communicated to the bellows u and f by pipes t, thus controlling the valves d and v. Within each container i, j are two capsules k and m, the first being sensitive to the pressure in the container alone and the second to the difference between that pressure and the pressure of the atmosphere communicated to the capsule by pipes 2, 3, z. Each pair of capsules controls an air valve o similar to a "Schrader" (Registered Trade Mark) valve, which exhausts the containers to the atmosphere in the manner described in Specification 563,553 ; the construction of the containers may also be as described therein. Cams s and stops y<SP>1</SP> are provided to enable the performance of the control units to be varied by changing the initial clearance between the fixed stops p and the ends of the beam n, so that as the external pressure rises or falls the cabin pressure rises or falls by a smaller amount. Reference is made to Specification 602,340 concerning the capsules k<SP>1</SP> which arc sensitive to the difference between cabin pressure and atmospheric pressure.
Patent GB-748139-A (GB)
Title: Keyboard transmitter
Inventor: KLEINSCHMIDT EDWARD ERNST
IPC: H04L17/04
Filed: 1951-07-06
Abstract: 748,139. Printing-telegraph transmitters. KLEINSCHMIDT LABORATORIES, Inc. July 6, 1951, No. 12271/53. Divided out of 748,121. Drawings to Specification. Class 40(3). The subject-matter is wholly included in Specification 748,121, but the claims relate to a keyboard transmitter mechanism in which a set of permutation bars selectively positioned by the key levers operate a set of pivoted blocking members to one or the other of two positions in which a corresponding number of contactoperating levers are selectively blocked or not blocked and pivot about one or the other of two axes under control of a rotatable cam member so that a pair of transmitting contacts common to the contact-operating levers are sequentially operated in accordance with the signals to be transmitted.
Patent GB-1393887-A (GB)
Title: Methods of establishing electrical connections
IPC: H01R4/02
Filed: 1971-04-30
Abstract: 1393887 Laminated windscreen heating assembly SMITHS INDUSTRIES Ltd 28 April 1972 [30 April 1971] 12306/71 Heading B5N [Also in Divisions H2 and H5] A vehicle window heater comprises a generally rectangular laminate sheet produced by bonding a layer of aluminium foil (24) to a layer (26) of plastics film, e.g. polyester, both layers being in the form of a long narrow sinuous strip (22), coating the exposed surface of the foil with a cross-linked, acrylic-based, thermosetting adhesive (28) and applying a backing sheet (20) of polythene coated, silicone-release kraft paper to the adhesive-coated side of the foil. Another paper sheet (25) coated with a low-tack adhesive is applied to the surface of the backing sheet supporting the strip. Two portions of the adhesive-coated surface of the foil constitute electric contacts and have steel filings (27) in the adhesive coating.
Patent GB-986712-A (GB)
Title: Hair coloring shampoo
Filed: 1963-03-28
Abstract: A hair colouring shampoo comprises a basic dye and an amphoteric detergent and preferably includes an essentially aqueous vehicle.  A number of amphoteric detergents are specified, those preferred being N-lauryl-b -aminopropionic acid or a mixture thereof with the inner salt of 2-trimethylamino-lauric acid, the sodium salt of 1 - (carboxymethyl) - 1 - (2 - hydroxyethyl) - 2 - coco - 1 - imidazolinium hydroxide and a mixture of N-lauryl-b -aminopropionic acid and the partial sodium salt of N-lauryl-b -iminodipropionate in a ratio of 4:1 to 1:1. A number of known basic dyes of the disazo, ketone imine, triphenylmethane, xanthene, azine, oxazine and thiazine series are also specified.  The compositions may further contain solubilizing agents, e.g. alcohols such as isopropanol, glycols such as hexylene glycol, non-ionic detergents such as alkanolamides, or ethylene oxide condensates with sorbitan monolaurate, ceto-stearyl alcohol or nonylphenol, perfume, hair conditioners, super-fatting agents, thickening agents such as hydroxyethylcellulose, lubricating agents, foam boosters and preservatives.  The pH of the compositions is preferably adjusted to a value of 5-7 by addition of hydrochloric or phosphoric acid.ALSO:A hair colouring shampoo comprises a basic dye and an amphoteric detergent and preferably includes an essentially aqueous vehicle.  A number of amphoteric detergents are specified, those preferred being N-lauryl-b -aminopropionic acid or a mixture thereof with the inner salt of 2-trimethylamino-lauric acid, the sodium salt of 1-(carboxymethyl)-1-(2-hydroxyethyl-2-coco-1-imidazolinium hydroxide and a mixture of N-lauryl-b -aminopropionic acid and the partial sodium salt of N-lauryl-b -iminodipropionate in a ratio of 4:1 to 1:1.  A number of known basic dyes of the disazo, ketone imine, triphenylmethane, xanthene, azine, oxazine and p  thiazine series are also specified.  The compositions may further contain solubilizing agents, e.g. alcohols, glycols and non-ionic detergents, perfume, hair conditioners, super-fatting agents, thickening agents, lubricating agents, foam boosters and preservatives.  The pH of the compositions is preferably adjusted to a value of 5-7.  Examples are given.
Patent GB-272184-A (GB)
Title: Machine for removing severed sewing threads from straw-plait
IPC: A42C3/00
Filed: 1927-05-09
Abstract: 272,184. Burkhardt, W. June 5, 1926, [Convention date]. Picking out sewing.-A machine for picking sewing threads out of straw plait from old hats so that the plait may be used again comprises a pair of gripper jaws n, o urged apart by a spring p and carried at the lower end of a bar l reciprocated by a lever f and rod c from an eccentric on a driven shaft a. A sleeve k surroundof a bar l reciprocated by a lever f and rod b from an eccentric on shaft a, and the lower end of the sleeve is formed so that when it is moved down on rod l it embraces and closes the jaws n, o on to the thread. The strokes of bar l and sleeve k are adjusted and timed so that the jaws move into position to grip the thread, sleeve k closes the jaws on the thread, sleeve and jaws rise together to withdraw the thread, and finally sleeve k moves up on bar l allowing the jaws to open and release the withdrawn thread. The plait is passed over a supporting table u, which can be adjusted in height for different thicknesses of plait, and under a presser foot q, the plait being fed through by a feeder x resembling that on a sewing machine. The presser foot has a forked end guiding the thread into a groove, not shown, on the underside of the foot and leading to a slot in the foot through which the jaws n, o grip and remove the thread. The presser foot holds the plait down as the thread is being withdrawn and also protects the plait from the jaws.
Patent GB-878198-A (GB)
Title: An improved automatically operating electrolytic or similar installation
IPC: B65G49/04
Filed: 1959-04-13
Abstract: 878,198. Step-by-step conveyers. LAMINOIRS A. FROID DE THIONVILLE. April 13, 1959 [April 22, 1958], No. 12449/59. Addition to 866,190. Class 78 (1). In the automatically operating installation for the electrolytic treatment of metal objects in a series of tanks of the parent Specification, the pivoted arm 54 of each transfer unit is driven by an hydraulic-pneumatic unit. The arm 54 is fast on a shaft 57 carrying a pulley 73, or chain wheel, over which passes a belt 72, or chain, connecting the ends 67b, 67c of plungers 67, 67a which work in cylinders 66, 66a. Gas is admitted to the lower ends of the cylinders at 68, 68a and liquid to the top ends at 69, 69a. The distributers 71, 70 for these fluids are coupled and their opening and closing are controlled by electromagnets 75, 76. Output regulators 74, 77 control the speed of the moving parts. Desired stations may be provided with a second pivotally moving arm which is supported by an auxiliary upright and driven through the intermediary of transmission means by the plungers of the hydraulic-pneumatic jacks.
Patent GB-719212-A (GB)
Title: Improvements relating to synchronous dynamo-electric machines
Inventor: KREBS ERNST WOLFGANG
IPC: H02P9/38
Filed: 1950-05-18
Abstract: 719,212. Synchronous dynamo-electric machines. SELECTRA, Ltd. March 30, 1951 [May 18, 1950], No. 12457/50. Class 35 A synchronous motor or alternator is compound excited through rectifiers from its output so that the excitation is derived partly from the terminal voltage and partly from the load current, excitation being initiated by feeding the rectifier directly or through step-up transformers with a voltage produced by the residual magnetism of the machine. In its simplest single-phase form, shown, the field winding E of the alternator D is energized through a rectifier H from the alternator output voltage, either directly or through a transformer, connected in series with the secondary winding F2 of a current transformer F in the load circuit. To ensure build-up when the residual voltage of the machine is low, the rectifier is connected at contact G2 of a relay or manually operated switch G to a step-up autotransformer J through a current limiting resistor R. In a modification, the voltage component is supplied to the rectifier from an additional winding on the alternator armature instead of from the output of the main winding, winding layouts for the additional winding being shown. A modification for a balanced two-phase system is described in which the voltage component is supplied from a transformer between one of the phases and neutral, the secondary winding being provided with an additional winding for boosting the excitation at starting, while the current compounding is derived as before from a current transformer in the same phase line. If desired, transformers may be used in both phases. In a modification for unbalanced two-phase loads, the current compounding is derived from a current transformer in the neutral line, and the voltage component from an auto - transformer connected between phases. A system for a balanced threephase system is described in which the current and voltage transformers are energized from the same phase and the initial excitation is provided by connecting the rectifier directly across two phase lines through a current limiting resistance. For unbalanced three-phase systems, current and potential transformers are connected in all three phases and a threephase rectifier is used. A phase-shift may be introduced into the system by the voltage transformer of a three-phase system by splitting the windings and transposing a part of the winding to another phase. A further exciting winding excited only in dependence on the line voltage may oppose the normal current compounded excitation. In large machines a D.C. exciting generator may be interposed in the system.
Patent GB-785130-A (GB)
Title: An improved variable pitch pulley
IPC: F16H55/56
Filed: 1955-04-30
Abstract: 785,130. Expanding pulley gearing. SKINNER, Ltd., E. J., and THOMAS, A. P. L. April 30, 1956 [April 30, 1955], No. 12592/55. Class 80 (2). An expanding pulley, for use with a V-belt, comprises flanges 2a, 6a fast with inner and outer telescoping sleeves 2, 6, registering axial grooves 2c, 6b in the adjacent outer and inner surfaces after two sleeves containing balls 7 (or rollers) which connect the two flanges &c. The inner surface of the sleeve 2 has axial grooves 2b registering with axial grooves 1b on the outside of a shaft sleeve 1, balls &c. 3 lying in these grooves and a set-screw la securing the shaft sleeve to a shaft (not shown). The pulley flanges are biased towards each other by a compression spring 10.
Patent GB-200281-A (GB)
Title: Improvements in loose leaf ledgers, binders and the like
IPC: B42F13/04
Filed: 1922-05-04
Abstract: 200,281. James, F. May 4, 1922. Flexible-band files; covers.-To provide for increased expansion of a loose-leaf thong binder, the tensioning mechanism for the thongs consists of a sliding member in one cover 1, over which the thongs are freely looped, the free ends of the thong being fixed to the cover. The sliding member 4 is of channel section and is operated by a multiple screw-threaded spindle 3 rotating in a nut 5 in the member. The thongs 19 may pass round the outside of the member 4, or may be looped round rollers mounted on pins on this member, the ends of the thongs being riveted to the cover. Both covers may be provided with tensioning mechanism of the kind described. The clamping bars 8 are hinged to the covers by means of staples 9 pivoting in blocks 11 riveted to the clamping bars. Specification 108,095 is referred to.
Patent GB-988354-A (GB)
Title: Improvements in mats of fibre and heat curable binder
IPC: D04H1/64
Filed: 1964-03-25
Abstract: 988, 354. Bonded fibrous sheets. GUSTIN-BACON MANUFACTURING CO. March 25, 1964 [April 1, 1963], No. 12652/64. Heading D1R. A bonded fibrous sheet material having at least one of its surfaces compressed to a greater density than the interior of the sheet is prepared by compressing and heating a mat comprising fibres and a heat curable binder so that at least one face is cured to a limited depth, allowing the mat to spring back to a greater thickness and heating the mat to complete the curing of the binder at the desired thickness of the final product. A loose mat 16 of glass fibres together with a thermosetting resin, such as phenol formaldehyde,is deposited upon a foraminous belt 12 and is compressed and heated by means of rollers 18, 19 at least one of which is heated. The heat supply is only sufficient to cure the surface or surfaces to a limited depth and the mat springs back to a greater thickness after passage through the nip. The mat then passes through a final curing oven 23 in which opposed belts 24, 25 confine the mat to the desired final thickness. The cured mat passes to a conveyer 32 for the finishing operations such as slitting or painting to be carried out. In modified apparatus (Figs. 2 and 3 not shown), opposed belts are used to provide the initial compression stage and means are provided to cause a partial precuring of the mat before the first compression stage. Additional bonding agent may then be sprayed on the partially precured mat.
Patent GB-1041484-A (GB)
Title: Nickel-silicon alloys
Inventor: WAKEMAN DENNIS WILLIAM
IPC: C22C19/00
Filed: 1964-03-25
Abstract: An alloy, which is resistant to corrosion by boiling sulphuric acid of 50-65% concentration, has the following percentage composition: .Si.at least 7 .Ti.1-5 .Cu.1-4 .Mo.1-4 .Ni.the balance, the Si and Ti contents being such that Si + 0.5 Ti is between 9.5 and 11.5.  The alloy may be used as-cast or may be annealed at 1000-1100 DEG C. for 4-24 hours.