baber/WOPTO huggingface dataset:
Patent GB-265498-A (GB)
Abstract: 265,498. Ransford, A. J., (Cassella & Co., Ges., L.). Aug. 7, 1925. 4-Arylamino-arylene-2:1-thiazthionum compounds of the general formula (where Ar and R are aryl residues and X is hydrogen or an alkyl or aralkyl group) are obtained from aromatic amines and the products of reaction of disulphur dichloride on aromatic amines described in Specification 17417/14 and having the formula (Y=a labile substituent such as halogen or alkyloxy in the p-position to the N-atom). The condensation is effected in acid solution, preferably strong acetic or formic acid, and with one molecular proportion of aromatic amine to half a molecular proportion of the thiazthionium compound; if molecular proportions of the components are used an agent which will bind the mineral acid liberated in the reaction is added. According to examples :-(1) Aniline is condensed with 6-methyl-4-chlor-2 : 1-phenylenethiazthionium chloride (from o-toluidine and disulphur dichloride), or 6-methyl-4-methoxy-2 : 1- phenylene-thiazthionium chloride (from 6-methyl- 1-amino-4-methoxybenzene and disulphur dichloride), in presence of acetic acid; the 6-methyl- 4-phenylamino-2 : 1-thiazthionium chloride so obtained yields with alkalies such as sodium acetate the corresponding thionium base from which the salts (chlorides and sulphates) are regenerated bv action of acids; (2) 6-methyl-4-chlor- 2 : 1-phenylenethiazthionium chloride is condensed in acetic acid in presence of sodium acetate with anthranilic acid. benzidine, or monoethylaniline; in the latter case the compound is isolated as the double compound with zincchloride: (3) 4-chlornaphthylene-2 : 1-thiazthionuim chloride (from a-naphthylamine and disulphur dichloride) is condensed with sulphanilic acid or arsanilic acid in presence of acetic acid and sodium acetate; the arsinic acid obtained possesses therapeutic properties. Toluidines, halogenated and nitrated anilines and toluidines, aminophenolethers, and a- and #-naphthylamines are also specified as components.
Patent GB-794971-A (GB)
Title: Improvements relating to the manufacture of printed electrical circuits
Inventor: ASHWORTH FRED
IPC: H05K3/04
Filed: 1953-09-28
Abstract: 794,971. Printed circuits. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Sept. 28, 1954 [Sept. 28, 1953], No. 26651/53. Drawings to Specification. Class 37. A printed circuit comprising superimposed layers to constitute the components and connections is made by printing a negative mask of the desired pattern on an insulating backing, applying by vacuum deposition a conducting, resistive or semi-conducting coating over the whole, forming a subsequent layer by further printing and coating and removing the masking material and coatings superimposed thereon. A negative mask of the desired resistive or semiconducting areas may first be printed on the base and a coating of resistive or semi-conducting material applied after which the mask and overlying coating are removed. A negative mask of the desired conducting areas is then printed on the base and a conducting coating applied, after which the second mask and its overlying coating are removed. An alternative method comprises printing on the base a negative mask of the desired resistive or semi-conducting and conducting pattern, applying a coating of resistive or semi-conducting material, printing a second negative mask of the desired conducting pattern thereover, coating this with conductive material, which adheres to the exposed areas of the resistive or semi-conducting coating, then removing the masking layers and any superimposed material. Two or more successive layers of resistance material may be applied to obtain the desired resistivity. A nickel-chromium alloy may be used for the resistance material, selenium or germanium for semi-conductors and copper or silver for the conductors. The insulating base may comprise polyester-bonded glass laminates, glass, paperbased " Bakelite " board or " Araldite " (" Bakelite " and " Araldite " are Registered Trade Marks). The completed circuit may be rolled or folded and encased in plastic, wire leads being brought out for connection. Specification 794,973 is referred to.
Patent GB-689989-A (GB)
Title: Car and like licence holders
IPC: B60R13/10
Filed: 1950-11-02
Abstract: 689,989. Licence holders. GODSALL. J. H. Nov. 2, 1951. [Nov. 2, 1950] No. 20709/50. Class 73. A licence holder comprises an annular part 1 and a disc 2 extending to the outer diameter thereof and having an aperture 3. The parts are of flexible material, preferably a synthetic plastic, such as polyvinyl chloride, having smooth or highly polished surfaces. The parts 1 and 2 will adhere together by atmospheric pressure when pressed together and, after inserting a licence, the part 1 can be pressed on the windscreen and similarly made to adhere. The whole may be fabricated as a single piece.
Patent GB-624308-A (GB)
Title: Improved mounting for the wheels of aircraft
IPC: B64C25/14
Filed: 1945-10-12
Abstract: 624,308. Retractible aircraft undercarriage. NATIONAL MOTOR SPRINGS PTY., Ltd. Oct. 12, 1945, No. 26798. Convention date Oct. 13, 1944. [Class 4] A mounting for a retractible aircraft wheel or wheels comprises members 5, 18 pivoted at 6, 19 respectively to a pillar or base secured to the aircraft and joined to form a three-bar chain linkage by a member 12. This linkage may be duplicated to hold an axle 14 for a single wheel between its ends or alternatively a single central linkage may support an axle for twin wheels on each side. One of the members 18 of the linkage incorporates a shock absorber. To retract the wheel to the position shown in dashed lines from the (extended) position shown in full lines, the member 5 is rotated about its pivot 6 by the plunger 23 of a jack. The member 5 is locked in both extended and retracted positions by a toggle link 9, 20 pivoted to a fixed point at 19 and constrained to break in one direction only by a co-operating pin and lug 27, 26. The jack plunger 23 operates on an extension 22 of one member 9 of the toggle link in such a direction as to unlock the toggle in both the initial retracting and extending movements.
Patent GB-247282-A (GB)
Title: Improvements in or relating to ornamented fabrics and methods of ornamentation thereof
IPC: D06Q1/10
Filed: 1924-11-11
Abstract: 247,282. Farragut, G. E. Nov. 11, 1924. Orn,ainenti?ig fabrics. - Small particles 3 of glass, metal, or other material are applied to deposits 2 of phenol condensation products arranged in spaced relation on the surface of a fabric 1 while the condensation product is in a liquid or plastic condition. A hardening agent, e.g. heat, is then employed finally to harden the deposits into insoluble, non-thermoplastic condition. Specification 218,327 is referred to.
Patent GB-484701-A (GB)
Title: Improvements in or relating to frequency controlling electrical circuits
IPC: H03J7/16
Filed: 1936-10-05
Abstract: 484,701. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 5, 1936, No. 26972. Convention date, Oct. 3, 1935. [Class 40 (v)] The tuned input circuit of a thermionic valve is varied in resonant frequency by means of a reflected impedance derived from a frequency control valve, the mutual conductance of which determines the magnitude of the impedance. In the schematic arrangement shown in Fig. 1, the input circuit of valve Tl has a composite reactance Z1, and the output circuit a reactance Z2, connected to the grid circuit of a frequency control valve T2 the anode of which is connected to the input of T1 over a feed-back condenser C3. The Specification discusses many forms which the reactance Z2 may have, and the resultant corresponding form of the reactances Z0 reflected across the input reactance Z1. Examples cited include Z2 as a capacity, Z0 then being a negative inductance and vice versa ; if Z2 is a negative mutual inductance, Z0 is a positive capacity. Complex networks may similarly be dealt with. Fig. 2 shows a cascade pair of screen grid amplifiers 1, 2, each with a frequency control valve 3, 4, the grid bias of which may be separately or conjointly varied to vary the tuning of the respective input circuits 5, 6. The impedance Z2 shown in Fig. 1 is here constituted by the negative mutual inductances M, M1, and ZO the reflected reactance across the input circuits 5, 6, is thus a positive capacity varying with mutual conductance of valves 3 or 4. Fig. 5 shows the application of the invention to varying the tuning circuit 54 of an electron-coupled oscillator 50. The supply choke 51 is assumed to be of negligibly high impedance, the reactance Z2 being constituted by condenser 34. The reactance reflected across 54 will thus be a negative inductance and the resonant frequency of 54 will be reduced as the gain of the control valve 52 is increased by reducing its,grid bias. The anode of 52 is coupled to the outer grid of 50 by the condenser 58. The invention may be applied to tuning over a wide frequency range, tone control, or to give automatic fine adjustment of tuning in manually or remote-controlled receivers. By reflecting back negative capacity, positive capacities may be neutralized by using the invention, in a wide band amplifier such as for television work, Fig. 3 (not shown). Specification 474,682 is referred to.
Patent GB-868883-A (GB)
Title: Improvements in stays for casement windows
Inventor: WALLIS HAROLD BASIL
IPC: E05C17/28
Filed: 1959-08-07
Abstract: 868,883. Stays for hinged articles. SMITH WALLIS & CO. Ltd. Nov. 13, 1959 [Aug. 7, 1959], No. 27003/59. Class 65(1). A casement window stay, comprising a slide bar 2 fixed to the hinged window frame and a stay bar 15 pivoted at one end to the fixed frame and at the other end to a slide 1 in the form of a sleeve, has a clamping screw 4 which applies pressure on the slide bar through a plastics bush 12, 13 lining the slide and a clamping lever 8 in splined engagement with the head 6 of the clamping screw, means being provided for limiting the angular movement of the lever relative to the slide. The lever has a projection 11 which abuts shoulders 10 on the slide and the position of the lever can be adjusted by means of the splined engagement so that the clamping position lies within its range of movement. The hole in the slide for receiving the screw 4 has a stainless steel insert 5. Nylon bushes 18 and stainless steel washers 20 are provided at the pivotal connections of the stay bar 15. All the main parts of the stay are formed of aluminium and can be anodised before assembly.
Patent GB-279824-A (GB)
IPC: H03B9/10
Filed: 1927-10-12
Abstract: 279,824. Esau, A. Oct. 29, 1926, [Convention date]. Thermionic generators; thermionic modulating systems.-The stable range of oscillation of the electrons and positive ions within a thermionic valve r is increased by placing the valve in a magnetic field NS. The magnetic field is transverse to the direction of the electronic stream. The energy emitted by the oscillator may be controlled by varying the strength of the magnetic field.
Patent GB-160720-A (GB)
Title: Improvements relating to the bodies of motor and the like vehicles
IPC: B60P3/42
Filed: 1920-09-23
Abstract: 160,720. Pearse, C., and Dobson, A. Sept. 23, 1920. Seats and seat backs, arrangement and disposition of.-In a passenger-carrying vehicle, the padded seats rest on, and are hinged to the outboards attached to the sides of the vehicle, so that when folded over the bottoms of the seats and outboards form a platform on which goods may be carried. Each seat d is hinged at e, and has a back f which is jointed at h so that the padded portion g may be folded on the back f when the seats are folded over to bridge the gangway. The back f up to the hinge h then forms a strut which is supported by the bottom of the vehicle. Detachable arm rests i support the seat backs when the vehicle is used for carrying passengers.
Patent GB-791276-A (GB)
Title: Improvements in conveyor stripping mechanism
IPC: B65G47/48
Filed: 1954-09-21
Abstract: 791,276. Endless conveyers. FLINN & SON, Ltd., and FLINN, F. W. Sept. 20, 1955 [Sept. 21, 1954], No. 27276/54. Class 78 (1). Articles 5, suspended from hooks 2 carried by an endless chain 1, are discharged at selected stations by solenoids 23 which are energized when the associated pair of switch actuating arms 13 are raised by a selected pair of abutments 7 carried by hooks 2. Each hook 2 is provided with a transverse bar 6 on which are pivoted a series of counterweighted arms which constitute the abutments. These arms are pivoted to and from the operative position either manually or by electrical means (not shown) under the control of a keyboard. The armature 24 of each solenoid is connected through a counterweighted lever 25 and a link 28 with a rod 30 which, when the solenoid is energized, arrests the article 5 so causing it to fall from hook 2 on to a bar 33. The apparatus is described in connection with the conveying of articles of clothing on clothes hangers.
Patent GB-411146-A (GB)
Title: Improvements in and relating to electric converting apparatus
IPC: F01K7/02
Filed: 1932-10-01
Abstract: 411,146. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Willis, C. H. ; 184, Prospect Avenue, Princeton, New Jersey, U.S.A.) Oct. 1, 1932, No. 27309. Convention date, Oct. 1, 1931. [Class 38 (ii).] Apparatus for transmitting energy in either direction between a D.C. circuit 10 and a singlephase A.C. circuit 11 under any desired power factor conditions comprises an inductive winding 13 and a pair of valves 14, 15 interconnecting the circuits, means including a condenser 21 for commutating the current. between the valves, and means including a further pair of valves 19, 20 for periodically charging the condenser to alternate polarities. In the arrangement shown in Fig. 1, the valves 19, 20 and condenser 21 are associated with a winding 18, and form an auxiliary inverter energized from the D.C. circuit, and the anodes of the valves 14, 15 are connected to a winding 16 inductively related to the winding 18, the mid-points of the windings being connected together. The grids of the valves are excited from a grid transformer 23 energized from an A.C. source 25 through a phase-shifting transformer 26. If the A.C. circuit 11 includes an independent source of E.M.F., the circuit 25 must be synchronized therewith, or alternatively the phaseshifting transformer may be energized from the circuit 11 through phase splitting means. In a modification for full wave conversion, Fig. 2, the winding 13 is connected to the D.C. circuit 10 through pairs of valves 14, 15 and 14<a>, 15<a> and through commutating windings 16, 16<a> and the auxiliary valve inverter, comprising the winding 18, valves 19, 20 and condenser 21 is connected across the D.C. circuit in parallel with the main converting apparatus. Specification 219,026, [Class 38 (ii)], is referred to.
Patent GB-333076-A (GB)
Title: Improvements in a process for the separation of alkalis from siliceous minerals
IPC: C22B26/10
Filed: 1929-09-09
Abstract: 333,076. Billinghurst, P. E. Sept. 9, 1929. Induction furnaces. - Siliceous minerals are heated to volatilize the alkalis in a straight or U-shaped tube 10 embedded in molten metal 9 forming a secondary surrounding a core 7 having a primary coil 8. The charge is forced through the tube 10 by a fan 6 or by steam. A preheater 11 may be included.
Patent GB-329926-A (GB)
Title: Improvements in boiler cleaners
IPC: F28G3/16
Filed: 1929-09-09
Abstract: 329,926. Fairweather, H. G. C., (Whittemore, Hulbert, Whittemore, & Belknap). Sept. 9, 1929. Cleaning, fluidpressure processes for; supporting tubes.-The nozzle tube 5 of a boiler cleaner is supported within the boiler by a number of U- shaped members 6, the ends 16 of the leg portions of which are bent to contact with the water-tubes 4 of the boiler and are connected thereto by welding 18. The ends 16 are preferably curved as at 19 to correspond with the curvature of the tubes 4.
Patent GB-242085-A (GB)
Title: Improvements in saucepans, frying-pans and the like
IPC: A47J37/10
Filed: 1924-11-17
Abstract: 242,085. Roe, I. H. Nov. 17, 1924. Handles; overturning, devices to prevent.- The free end of the handle of a saucepan, frying pan, or the like is bent round to form a foot C to prevent the overturning of the vessel. The attachment end D is made wide so as to serve as a splash guard.
Patent GB-485085-A (GB)
Title: Improvements in or relating to book supports
IPC: A47B19/04
Filed: 1936-10-10
Abstract: 485,085. Book-supports. WHITING, O. K. Oct. 10, 1936, No. 27537. [Class 16] [Also in Group XIV] Books are secured to rigid backing members 1 by means of a plurality of wires 15, Fig. 4, the backing members being pivoted intermediate their ends on a transverse rod 7 on a supporting structure 4 so that the books can swing into and out of a recess for storage or use, the extreme positions being limited by abutments. The backing member 1 has side cover members 2 and the ends of the wires 15 slide through holes in a bail 14 and are detachably secured at the other end by a rotatable hook 16a. Reference has been directed by the Comptroller to Specification 283,515, [Class 52 (i)].
Patent GB-331139-A (GB)
Title: Improvements in and relating to wire twisters
IPC: F16G11/12
Filed: 1929-09-11
Abstract: 331,139. Withers, J. S., (Royson Manufacturing Co.). Sept. 11, 1929. Twisting wires together. - A tool for twisting wires together, particularly for use in retaining building forms, steel joists &c. in place, ccmprises a gear carrying plate having a hand grip at one end and its other end bifurcated to receive the hub of a, slotted twisting- gear which is held therein by one or more slotted discs, and is driven by a handle on one of the gears. A plate 16 provided with a handle 17 receives the pivots 20, 23 of gears 21, 22 and is formed at its lower end with a thickened gapped ring portion to receive the hub 24 of a slotted gear 25 meshing with the gear 22. Removable discs 28 provided with slots 29 of width corresponding to the diameter of the wires are secured by screws 31 on each side of the gear 25. The gear 21 is rotated by a plate connected by screws thereto and provided with an offset portion 38 carrying a pivoted handle 37. In a modification a slotted bevel wheel 48 is used driven bv bevel gear 47, 44, 43. The pinion is held in the end of the plate 40 by a slotted disc 50. The tool may be used for centrally twisting the bracing wires 13 which pass round the uprights 11 of a wooden building form for receiving concrete so as to hold the spacer plates 14 between the boards 10. When the form is taken down the outer ends of the wires are cut, the wires serving as a concrete reinforcement.
Patent GB-1155537-A (GB)
Title: Improvements in or relating to the Formation of Perambulator Bodies
Inventor: ATHERTON JOHN
IPC: B29C44/12
Filed: 1967-06-15
Abstract: 1,155,537. Perambulator bodies. JEFFREY WILSON Ltd. 16 April, 1968 [15 June, 1967], No. 27658/67. Heading B5A. Perambulator bodies are formed by inserting a die into a preformed, outer shell leaving a space therebetween and inserting a foamable material e.g. polyurethane into the space and allowing it to set. Further upholstery may be formed on the article by securing a die at a position spaced from the interior surface of the first foam and inserting a foamable material into the space, preferably a material which sets to a flexible state. The shell may be of metal or of a synthetic plastics material. A preformed lining may be placed in the interior with or without the further upholstery layer.
Patent GB-839494-A (GB)
Title: Production of methylenedioxyphenyl derivatives
IPC: C07D317/52
Filed: 1957-09-02
Abstract: Chloromethyl dihydrosafrol, of the formula <FORM:0839494/IV (b)/1> is prepared by reacting dihydrosafrol or hydrogenated Ocotea Cymbarum (Brazilian Sassafras oil) at elevated temperatures, preferably 60-90 DEG  C., in an aqueous system containing formaldehyde and hydrogen chloride; and (i) adjusting the HCl concentration so that its concentration in the aqueous phase at the end of the reaction is about 6.5-9.5 N; or (ii) adding calcium chloride, e.g. about 10-18%, and adjusting the HCl concentration to give a final normality of about 5.5-8.0, the aqueous phase being saturated with HCl. Formaldehyde polymers may be used as the source of formaldehyde.  The acidity may be adjusted by bubbling hydrogen chloride into the solution.  "Piperonyl butoxide," in which the Cl of chloromethyl dihydrosafrol is replaced by -OCH2CH2OCH2CH2OC4H9, is prepared by reacting chloromethyl dihydrosafrol with the sodium salt of diethylene glycol monobutyl with the sodium salt of diethylene glycol monobutyl ether.  Specification 632,589 is referred to.
Patent GB-1288148-A (GB)
IPC: F04B49/16
Filed: 1970-06-09
Abstract: 1288148 Hydrostatic transmissions J WUEZER 9 June 1970 [8 July 1969] 27776/70 Heading F2C [Also in Division F1] In a hydrostatic transmission, the displacement volume of the pump 1 and the motor 2 is controlled by accumulators 19 in the pump cylinder block 5 and accumulators 20 in the motor pistons 4 the pressure at the pump inlet and motor outlet being controlled to determine the proportion of the displacement absorbed by the accumulators. At a lower limit pressure in the pump inlet and motor outlet set by pressure regulator 25, accumulator pistons 19 are fully extended while traversing inlet chamber 29 and are fully retracted by the outlet pressure in chamber 30, thereby absorbing the whole output of the pump pistons 3, so that the motor remains stationary. At an upper limit pressure, pistons 19 are fully retracted while traversing both chamber 29 and chamber 30 so that maximum displacement is obtained, the motor accumulator pistons also being fully retracted so that the motor rotates at the same speed as the pump. Between the upper and lower limits, the speed ratio is infinitely variable by controller 25. The control lever 26 of the controller 25 also can be set for forward or reverse rotation of the transmission, and may be remote-controlled by an hydraulic telemotor 35. The controller 25 is arranged to automatically lower the pressure in the pump inlet and motor outlet when the pump outlet and motor inlet pressure rises to a predetermined level, to prevent overloading the power source, which may be a gas turbine, Fig. 2 (not shown), or an I.C. engine, Fig. 3 (not shown). The pump and motor casings have cooling fins 38, 39.
Patent GB-173836-A (GB)
Title: Improvements in means for locking the steering columns of motor cars
IPC: B60R25/021
Filed: 1920-10-01
Abstract: 173,836. Winkelmann, R. Oct. 1, 1920. Guarding against unauthorized use. - The steering-column of a motor vehicle may be locked to its casing to prevent unauthorized use, by a key having projections adapted, when the key is placed longitudinally on the casing, to enter holes in the column and casing when coincident, the key being retained in this position by a combination ring device. As .shown, the projections k' on the key k are inserted into the apertures in the steering-column and its casing. A sleeve e, having a longitudinal groove i accommodating the key, is slid over the casing, and slotted rings a', a<2>, a<3>, a<4>, having grooves e<1>, e<2>, e<3>, e<4>, in their internal peripheries, are slid over the sleeve and projecting parts m', m<2>, m<3>, m<4>, of the key, and are then rotated to lock the key in position. The rings are held in place by collars b<1>, b<2>, having grooves and slots to accommodate the key, and operated in a similar manner to the rings. The collars and rings carry outer lettered and numbered rings, respectively, capable of being secured in a variety of positions on the inner rings to permit alteration of the code. The securing-device comprises thin code-denoter rings pressed into grooves u<1>, u<2>, u<3>, u<4>, and each provided with a metal upright adapted to project through one of a number of slots in the inner rings and engage in one of a number of slots in the outer rings x<1>, x<2>, x<3>, x<4>. A rod w<1> is carried bv circular-headed screws w<2> so as to be either pivotal on one, or rotatable between both, and carries a metal blade contacting with grooves cut between the numerals for facilitating alignment thereof. A stop f, secured to the steering- column casing, serves as an abutment for one end of the lock.