baber/WOPTO huggingface dataset:
Patent GB-338352-A (GB)
Title: Improved means for the elimination of distortion in telephone lines
IPC: H04B3/08
Filed: 1929-11-07
Abstract: 338,352. Telefonaktiebolaget L. M. Ericsson. Nov. 9, 1928, [Convention date]. Repeating and amplifying systems.-Distortion due to unequal attenuation in a pupinized line is reduced by making use of the property of such lines that the characteristic impedance and attenuation vary with frequency approximately according to the same law, the amplifiers being constructed so that the reaction of the anode load on the control voltage is eliminated by the transfer of a compensating voltage from the anode circuit to the grid circuit, and consequently the different frequencies are amplified to the same degree as they are attenuated in the line. Fig. 1 shows a repeater stage in a two-wire line in which output transformers 6, 7 of the amplifying valves are provided with a third winding 8 included in the grid circuit. The distortion may be reduced still further by a suitable adjustment of the distance between repeater stages, and a mathematical discussion is given showing that the best result is obtained when this distance is such that the line attenuation at low frequencies is approximately one neper. Fig. 2 shows a repeater stage in a four-wire line with two amplifying valves arranged as in Fig. 1, separated by an artificial line having the same characteristic impedance as the actual line but substantially free from attenuation. The line section may thus be double the length of that when a single amplifying valve is employed. A greater number of amplifying valves may be used in a similar manner. If the length of a section is fixed by geographical conditions, the number of amplifying valves is chosen so as to compensate fully for the line attenuation, and any excess amplification is neutralized by the insertion of a suitable network.
Patent GB-325536-A (GB)
Title: Improvements in or relating to motor-tractors and other motor-vehicles
IPC: B62D7/00
Filed: 1928-11-20
Abstract: 325,536. Rushton, G. Nov. 20, 1928. Axles, adjusting longitudinally of vehicle.-A tractor or other self-propelled road vehicle is provided with alternative mountings adapted to receive the axle of a pair of steerable road rollers in order to permit adjustment of the turning circle. In the construction shown, the axle 14 of the steering wheels may be connected by a central pin 22 to either of the sets of lugs 20, 21 spaced apart longitudinally of the vehicle to give either a short or a long wheelbase.. The axle is thus free to rock transversely but other movements are prevented by radius rods 18 connected by a pin to the set of lugs 20, 21 not in use by the axle. The radius rods 18 will be arranged forward of the axle when the latter is pivoted to the rearmost lugs 21.
Patent GB-631651-A (GB)
Title: Improvements in or relating to the production of phenanthridine compounds
IPC: C07D221/12
Filed: 1947-12-24
Abstract: Nitrophenanthridines of the general formula <FORM:0631651/IV (b)/1> (wherein at least one of the benzene rings is substituted by at least one nitro group and R is a phenyl substituent) are obtained by reacting an amidine of the general formula <FORM:0631651/IV (b)/2> (wherein each xenyl group is substituted by at least one nitro group and is unsubstituted in at least one of the 21- or 61-positions and R is a phenyl group) with a benzotrihalide, e.g. benzotrichloride, in an organic non-hydroxylic ionizing solvent at a temperature of at least 200 DEG  C. in the presence of an inorganic halide catalyst until evolution of hydrogen halide has substantially ceased.  By inorganic halide is meant one of the groups comprising aluminium, stannic, ferric, zinc and zirconium chlorides, bismuth trichloride and oxychloride.  Aluminium, zinc and stannic chlorides and bismuth trichloride are preferred. Solvents specified are nitro-benzene and nitro-toluene.  The amidine base may be prepared from a salt thereof, e.g. the hydrochloride, by basifying or in situ by dissociation on boiling in the solvent at above about 200 DEG  C.  It is preferred that when the hydrochloride is used the free base is obtained therefrom prior to the addition to the solvent medium of the benzotrihalide and catalyst since the catalyst tends to impede the dissociation of the hydrochloride.  The nitrophenanthridines may be quaternated by the addition of a quaternating agent to the reaction mixture in which they are formed.  In examples: N : N1-bis-(4 : 41-dinitrodiphenyl-2-)benzamidine hydrochloride is (1) heated at 210 DEG  C. in nitrobenzene, hydrogen chloride being evolved, and benzotrichloride and stannic chloride in nitrobenzene added, the temperature being kept at 210 DEG  C. for 2 1/2 hours when the mixture is allowed to stand overnight and the product, 2 : 7-dinitro-9-phenylphenanthridine, collected and washed with nitrobenzene and ether; and (2) dissolved in boiling pyridine for 50 minutes and cooled overnight when the precipitated base is collected and recrystallized from chloro benzene containing one molecule of chlorobenzene of crystallization, this complex being substituted for the hydrochloride used in (1) and the same product obtained.  The benzamidine hydrochloride used in (1) and (2) is prepared by treating 4 : 4-dinitro-2-aminodiphenyl in dry nitrobenzene with a mixture of benzotrichloride, stannic chloride and nitrobenzene at 170 DEG  C. for 1 1/2 hours, the product, N : N1-bis-(4 : 41-dinitrodiphenyl-2)benzamidine hydrochloride, separates and is filtered off, washed with nitrobenzene and ether and dried. Specification 611,745 is referred to.
Patent GB-212659-A (GB)
Title: Improvements in or relating to automatic small arms and machine guns
IPC: F41A21/48
Filed: 1922-12-16
Abstract: 212,659. Vickers, Ltd., (Berthier, A. V. P. M.). Dec. 16, 1922. Machine guns.-A removable barrel A is locked in position by a sliding member B operated by a rotary pin C having teeth engaging rack teeth b<1> on the locking member. The invention is shown applied to a gas-operated gun in which the barrel-locking member B is part of the gas cylinder, the connection with the gas-port block a at the front being broken when the member is retracted to release the barrel. The operating- member is provided with a cranked handle C' which is retained in the locking position by a spring catch.
Patent GB-482001-A (GB)
Title: Mechanism for effecting opposite movements of a driven member by successive similar movements of a driving member
IPC: B60Q1/068
Filed: 1936-12-16
Abstract: 482,001. Gearing for conveying reciprocating motion. BUTLERS, Ltd., and REEVES, A. Dec. 16, 1936, No. 34541. [Class 80 (i)] [Also in Group XI] Consists in mechanism for effecting opposite movements of a driven member by successive similar movements of a driving member stated to be particularly applicable to the actuation of a pivoted or other anti-dazzle device in the head lamps of a motor vehicle by hand or foot. The driven member b is slidable in guides f, g in a support a, and has a slot i working over a pin h on the guide f. It is loaded by a spring c and has on its underside a rack d, the teeth of which are adapted to be engaged by teeth k, l of a gapped wheel j. Secured to this wheel is a ratchet wheel m, and pivoted on the shaft n is an arm o carrying a pawl p the arm being connected by pin-andslot u, v to a plunger r adapted to be actuated against a spring t by a knob s. A holding pawl is provided at q. With the parts in the position in Fig. 1, the first depression of the plunger r causes the teeth k to move the rack to the right and stretch the spring c. At the end of this movement the rack teeth remain in engagement with the teeth k and return movement of the slider is prevented by the pawl q when the plunger r is released. The next depression of plunger r causes teeth k to move the slider a small amount to the right so as to clear the teeth k from those of the rack which is then returned by the spring c. Meanwhile the wheel is rotated by the plunger r until the teeth l are in the same position as the teeth k in Fig. 1. The member b may be connected to the lamp device by a cable. A toothed oscillatory member may replace the slide b and the toothed wheel may be formed with more than two gaps.
Patent GB-844141-A (GB)
Title: Improvements in plastic compositions
IPC: C08L25/12
Filed: 1958-10-29
Abstract: A synthetic resinous composition comprises, per 100 parts thereof, 10 to 40 parts of rosin or a derivative thereof and 90 to 60 parts of a rubber and-rosin material comprising, per 100 parts of the material, 10 to 40 parts of an emulsion polymerized synthetic rubber containing not less than 95% of polymerized butadiene and not more than 5% of a styrene copolymerized therewith and 90 to 60 parts of a synthetic rosin aqueous emulsion copolymer of a mixture of 25 to 90% of a styrene and 75 to 10% of acrylonitrile, at least 5% of the styrene-acrylonitrile rosin having been prepared by graft polymerization in admixture with the latex of the synthetic rubber. Rosin derivatives specified are hydrogenated, dehydrogenated, polymerized, disproportionated and esterified rosins.  The styrene used in the rubber and/or rosin may be styrene itself which may be replaced wholly or in part by alpha-methyl styrene or vinyl toluene. The products may be formed into shaped articles by injection moulding.
Patent GB-194821-A (GB)
Title: Improvements in or relating to roasting furnaces
IPC: F27B9/24
Filed: 1921-12-23
Abstract: 194,821. Leggo, A. V. Dec. 23, 1921. Furnace fire-places.-The hearths of a multiplehearth roasting-furnace are supplied with hot gases from an equalizing-chamber 3 in communication with the combustion chamber 4 of a fire-box 5 provided with a mechanical stoker 6 or an ordinary grate, or a burner may be provided. Hot air from the hollow rabble shafts 13 in the. hotter part of the furnace is delivered by pipes 12 and a fan in regulable quantities over the ignition arch 4 and under the grate at the sides and front of the furnace. The arch 4<1> may be inclined or parallel to the grate and a bridge 5<1> of suitable height is provided. To ensure equal distribution of the hot gases, the discharge ends of the hearths 2, in their order upward, extend progressively nearer the wall 3<1> of the equalizing-chamber. Uniformity of temperature and chemical composition of the hot gases is obtained by a depending baffle 3<11> extending downwardly from the wall 3<1> to a point level with or below the lowermost hearth 2. The baffle 3<11> may be of chequer brickwork or provided with openings. which are smaller in area nearer the roof of the chamber 3. The feed ends of the roasting chambers 7 are connected by dampercontrolled flues 8 to a stack or the like. Tiles may be inserted through holes in the sides of the furnace to restrict the passage of gases from the chamber 3 to the hearths 2.
Patent GB-859413-A (GB)
Title: Safety shut-down system for combustion process
IPC: C09C1/50
Filed: 1957-11-08
Abstract: <PICT:0859413/III/1> In a carbon black furnace, a valve in the hydrocarbon supply conduit is closed when the pressure in any of the conduits supplying air, fuel or hydrocarbon to the furnace drops below a predetermined level.  Hydrocarbon preheated at 14 is fed axially to a reactor 11 heated by tangentially supply air and fuel, and the partly burnt products, quenched by water from a line 27 pass through an elongated section 12 of the reactor, heat exchanger 13 and conduit 16 to a quench tower 17 and carbon black recovery equipment. Pressure controllers 68, 86 operated by the pressures in the fuel and air supply heaters 62, 73 open switches 71, 87 respectively when the pressure in either heater drops below a predetermined value to de-energize solenoids controlling valves 53, 64, 77, 81 and 93.  The opening of valve 53 causes a final valve 51 in the hydrocarbon charging line to close and opens a valve 52 in a line returning hydrocarbon to stock.  The opening of valves 64, 81 closes valves 63, 82 in fuel and air supply lines 20, 23 respectively, and the opening of valve 77 closes a blower protection valve 76 in the air supply heater 73.  Opening valve 93 opens a valve 91 in a line supplying purge steam to the conduit 16 leading combustion products to the quench tower 17.  Pressure controller 54 operates a switch 57 to de-energize the solenoids controlling valves 37, 46, 42 and open a relay contact to de-energize the solenoid controlling valve 53 when the pressure in the hydrocarbon heater 32 drops.  Valves 37, 46, 42 control valves 34, 47, 41 in the hydrocarbon supply line 33, the preheater by-pass line 48, and a purge steam supply to the hydrocarbon line 33 upstream of the preheater, respectively.  The final hydrocarbon valve 51 closes and the hydrocarbon return valve 52 opens as for a fuel or air supply failure, but the fuel and air supplies remain open so that undue condensation in the quench tower is avoided.  A power supply failure will close all the normally open valves and admit purge steam to the hydrocarbon supply lines and the quench tower.  An emergency generator supplies lights and may supply the fuel and air supplies to prevent damage.  Manual reset switches prevent damage by valves opening in the wrong order.  The main fuel, air and hydrocarbon stock valves are controlled in accordance with the flow in the pipes, and the preheater by-pass valve is controlled in accordance with the temperature of the hydrocarbon passing to the reactor.  Specification 711,816 is referred to.
Patent GB-750261-A (GB)
Title: Spark ignition magnetos for internal combustion engines
Inventor: FRY WILLIAM LAURENCE
IPC: F02P1/00
Filed: 1953-12-15
Abstract: 750,261. Trip couplings for magnetos. LUCAS (INDUSTRIES), Ltd., J. March 9, 1955 [Dec. 15, 1953], No. 34870/53. Class 35. A trip mechanism for a magneto comprises an angularly adjustable trip ring 1 attached by bolts 5 through selected holes of merged groups 4, and an angularly adjustable coupling consisting of one member 7, which is connected by dogs (not shown) to the enginemember 10, another member 11, which is connected to the spring 12, and a linking member 21 having eight teeth 22 engaging slots in the first member and nine teeth 23 engaging slots in the second member, so that a variety of relative angular positions can be obtained.
Patent GB-336840-A (GB)
Title: Improvements in and relating to centrifugal pumps and the like
IPC: F04D29/44
Filed: 1929-11-20
Abstract: 336,840. Wade, J. T. Nov. 20, 1929. Casings; impeller blades. - A centrifugal pump comprises a double disc impeller with double convex radial vanes as described in Specification 279,325 and a convergent divergent annular discharge passage formed between two ring like plates 11 attached to the casing. The impeller is formed with an inlet 9 for the fluid through the shroud 7, the other shroud 7a being so shaped that it directs the fluid to the vanes. The centre lines of the converging and diverging portions of the cross section of the discharging may be in alignment as shown, or may be at any desired angle. Correct positioning of the plate 11 is obtained by the interposition of washer rings. The impeller is eccentrically disposed with regard to the casing so that the delivery passage outside the plates 11 has a minimum section at 17 and increases gradually to the outlet 4.
Patent GB-892152-A (GB)
Title: Mounting bobbins in textile machinery
IPC: D01H7/16
Filed: 1960-10-17
Abstract: 892,152. Coupling bobbins to spindles. ETABLISSEMENTS PAIN-BOURGEAS. Oct. 17, 1960 [Oct. 16, 1959], No. 35527/60. Class 120(2) For coupling a bobbin to a spindle, male and female members are provided such that relative movement between them produces a progressively increasing thrust to centre the bobbin or hold it in centred position. As shown, the female member is a bushing 7 extending from a flange 8 of the bobbin, bored to correspond with a male member 2 in the form of a prism force-fitted on the spindle 4. The engaging faces of the two parts are concave and convex, and a flange 9 to support the bobbin may be provided on the spindle or, as shown, on the member 2. At the upper end of the bobbin a bushing 15 fits over a bush 16 forcefitted on the spindle, the diameter of the bush being such as to allow the bushing 7 to pass when the bobbin is doffed.
Patent GB-1268412-A (GB)
Title: Shaft for winding narrow ribbon or tape
IPC: F16C19/55
Filed: 1969-07-15
Abstract: 1,268,412. Rollers. MASCHINENFABRIK GOEBEL G.m.b.H. 15 July, 1969 [27 July, 1968], No. 35641/69. Heading F2U. A series of lap creels 2 (e.g. having winding sleeves 5 on which tape or ribbon 6 is wound) are mounted on a shaft 1 with which are rotationally fast discs 3 axially urged against the creels thus applying torque thereto through intermediate roller bearings with radial needle rollers.
Patent GB-741714-A (GB)
Title: Improvements in heads for angle handpieces, more especially for dentistry purposes
IPC: A61C1/18
Filed: 1953-12-23
Abstract: 741,714. Dental engines. KALTENBACH, A., and HOFFMEISTER, E. Dec. 23, 1953 [Sept. 7, 1953], No. 35799/53. Class 81(2). A head for an angle handpiece includes parts 1, 2 divided or separable along a longitudinal plane at right angles to the axis of the drive member 6 one part of the head having a collar 3 for engagement with a bore or recess 4 in the other part 2 for centering the two parts 1, 2 when assembled, and each part receiving a removable bearing 5, 9, for the drive member 6, each bearing 5, 9 being inserted into its associated part from the side defined by the separation plane. The bearings 5, 9 are screwed into position in the parts 1, 2.
Patent GB-1008858-A (GB)
Title: Improvements in dyeing hair
IPC: C09B1/28
Filed: 1964-09-02
Abstract: Hair is dyed with azo dyes of the formula <FORM:1008858/D1-D2/1> wherein R1 and R2 are H or an alkyl or alkanol residue of 1-3 C atoms and X is a phenylene or naphthylene radical.  A number of dyes are specified including 2, 21-and 4, 41-diaminoazobenzene and 4-amino-41-dimethylaminoazobenzene.  The dyes may be applied singly or in admixture and/or together with known anthraquinone dyes and anionic or non-ionic washing agents.  The dye composition may be in the form of an emulsion cream and adjusted to a pH of 8.5-9.5.  Other specified additives are thickeners, perfumes and conditioners and permanent waving agents containing mercapto groups.  Examples are given.  Specifications 957,119 and 1,005,915 are referred to.
Patent GB-343589-A (GB)
Title: Improvements in or relating to packing machinery
IPC: B65B19/02
Filed: 1929-11-23
Abstract: 343,589. Feeding cartons from stacks or piles. CLARKSON, R. and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. Nov. 23, 1929, No. 35945. [Class 117.] In the packing of cigarettes in cartons of the slide shell type, the collapsed shells 1 are delivered to an opening device from magazine 2, in the Figure, from which they are removed by a tooth 3 on a reciprocating bar 5 and travel beneath a pivoted weight 11 and spring 12 which keep them in position and prevent retraction on the backward stroke of the bar. At the next forward stroke, the edge 4 of the bar carries the shell further along the machine bed so that the leading edge rides up a pivoted plate 14, which at that moment is disposed in a diagonal position, and into the corner of a fixed abutment 13 to commence the opening.
Patent GB-1389040-A (GB)
Title: Packaging
IPC: B65D5/68
Filed: 1972-08-02
Abstract: 1389040 Packages BRITISH TITAN Ltd 21 May 1973 [2 Aug 1972] 35993/72 Heading B8C A package of powder such as titanium dioxide comprises a box with rigid sides, such as of cardboard, 2, 3, 4, 5 foldable about edges 6, 7, 8, 9 to collapse when empty, the ends being closed by paper sheets 10, 11 of a substance of from 50-200 grams per square metre which may be glued to the sides. A handle 13 may be secured to the sides, and the whole package may be covered with a shrink-plastics sheet. The packages may be stacked, the weight being taken by the sides.
Patent GB-334138-A (GB)
Title: Improvements in and relating to bumpers and like shock-absorbing devices for vehicles
IPC: B60R19/28
Filed: 1929-11-25
Abstract: 334,138. Conti, E. Nov. 28, 1928, [Convention date]. Collision-guards. - In a vehicle bumper or like shock-absorbing device of the kind in which the bumper-bar 1 is mounted upon the forward ends of a pair of pivoted two-armed levers 2, the other arms of which are associated with shock-absorbing springs, the rear ends of the levers are connected, preferably by cables 3 passing around pulleys 5, 6, with the rear springs 8 of the vehicle, the arrangement being such that the energy of a shock is transmitted to the springs 8 and therehy to the whole vehicle, producing a rapid damping effect. For the purpose of absorbing smaller shocks, light springs may be interposed in the connection between the levers 2 and springs 8. According to the Specification as open to inspection under Sect. 91 (3) (a) the connection between the levers and springs may be pneumatic or hydraulic. This subject-matter does not appear in the Specification as accepted.
Patent GB-362659-A (GB)
Title: Improvement in electric dry cell battery and seal therefor
IPC: H01M50/147
Filed: 1930-11-29
Abstract: 362,659. Galvanic batteries. DEIBEL, C. P., 18176, Clifton Road, Lakewood, Ohio, U.S.A. Nov. 29, 1930, No. 36064. Convention date, Sept. 11. [Class 53.] Gas exits and collectors.- A dry cell sealed at the top has a layer of plastic sealing material covering the depolarizing mixture which is separated from the outer seal by an expansion chamber and is so arranged that the plastic material may escape into the space provided between the metal can and the outer carton. In the form shown in the Figure, the paper-lined metal can 1 is loosely arranged in the carton 9 which projects above the can and is closed by hard sealing material 10. An expansion chamber 8 is provided and below this is a layer of plastic material 6, which may be soft tar or pitch, any of which carried over the edge of the can by the gas bubbling upwards collects in the space between the can and the carton 9. The metal can may have holes near its upper edge for the passage of the plastic material when the can extends into the hard seal at the top of the cell, and its edge may be bent over and embedded therein.