baber/WOPTO huggingface dataset:
Patent GB-663664-A (GB)
Title: Improvements in or relating to modulated carrier wave radio receiving systems
Inventor: BEANLAND CHARLES PERCY
IPC: H04B7/12
Filed: 1949-03-03
Abstract: 663,664. Radio diversity receivers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 11, 1949 [March 3, 1949], No. 5898/49. Class 40 (v). In a radio receiving system having a plurality of aerials, the best signal outputs for upper sideband, lower sideband, and carrier frequency are individually provided by selective means operating in accordance with normal diversity reception practice, and automatic means are provided to supply either the selected carrier output, or if this should drop below a predetermined level, oscillations from a local generator of carrier frequency, to the demodulators associated with each of the selected upper and lower sidebands. In the Figure, signals from aerial A1 after amplification and frequency conversion in frequency changer IFC1 and again in frequency changer 2FC1 are separated into upper sideband, lower sideband and carrier frequency portions respectively by filters USB1, LSB1 and CF1. Similar treatment is applied to signals from aerial A2, and in each case the strongest of the two signals is selected as in diversity reception by upper sideband selector SBS1, lower sideband selector SBS2 and carrier selector CS. The upper sideband output is applied to detector D and the lower sideband output to detector D2. If the selected carrier output is above a predetermined level, this output is supplied to detectors D1 and D2 via switch RS, but if the output is below this level, switch RS operates to connect a local oscillator CLO which is then used to supply carrier frequency oscillations to detectors D1 and D2. The operation of switch RS is controlled by a voltage derived from an automatic gain control circuit AGC which is jointly responsive to the two carrier frequency outputs. Alternatively, by means of switch SW, the switch RS may be manually operated so that the local oscillator is used continuously in place of the received carrier oscillations. An automatic frequency control circuit is used to control the frequency of the second heterodyne oscillator 2LO.
Patent GB-174865-A (GB)
Title: Improvements in or relating to kettles
IPC: A47J36/00
Filed: 1921-02-22
Abstract: 174,865. Waite, G. Feb. 22, 1921. Kettles.-A lidless kettle has at the bottom of the spout b a perforated annular baffle-plate e to prevent boiling-over of the contents. The plate may be formed as shown by cutting an opening f in the domed top a and perforating the metal surrounding the opening.
Patent GB-634999-A (GB)
Title: Improvements in or relating to resonant cavity oscillators
IPC: H01P7/04
Filed: 1947-03-03
Abstract: 634,999. Thermionic valves. LA PERRELLE, E. T. DE. March 3, 1947, No. 6003. [Class 39 (i)] [Also in Groups XL (b) and XL (c)] An electric discharge tube 9 is mounted at or near one of the foci of an oval-shaped resonator 6 formed between two parallel plates 1 and 2, while a variable tuning condenser is mounted near the other focus of the oval. The valve 9 is of the disc seal triode type with the anode grid circuit connected across the resonant cavity. The cathode and grid have terminal contact springs 18 and 17 respectively while the anode cap of the valve is in contact with an external securing cap which is capacity coupled to one wall of the resonator. 0
Patent GB-513158-A (GB)
Title: Improvements in and relating to control systems for electric motors
IPC: H02K23/02
Filed: 1938-02-25
Abstract: 513,158. Exciting dynamos. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 25, 1938, No. 6015. Convention date, Feb. 25, 1937. [Class 35] [Also in Group XXXVII] A motor 5 is supplied from a generator 1 excited by field windings 2, 3, and 4, to have a limited output and a resistance r3, connected in series with its separately excited field 6 is connected through a unidirectional current conducting device 7 across the motor armature, so that when the voltage across the motor armature is below a predetermined value current is diverted from the resistance r3 and the motor field is strengthened. Similarly the separately excited field 2 of the generator is connected through a unidirectional current conducting device 10 across the generator armature 1, and in series with a resistance r1 to a source of excitation so that current is diverted from the generator field when the voltage across the generator armature is less than the voltage across the generator field. A resistance r4 may be connected in circuit with the diverter circuit for the motor field resistance r3, and a similar resistance r2 on the diverter circuit for the generator field 2. The resistances and the exciting voltage V may be regulated to vary the operating characteristics of the motor. Where a motor is supplied from a constant voltage source, a resistance in the motor field circuit may be connected through a unidirectional current conducting device across the motor armature. Starting of the motor may then take place without returning a motor field regular from its weak field position. In this arrangement a variable resistance may be connected in the armature circuit in parallel to the field. Specification 484,596, [Group XXXVII], is referred to. The Specification as open to inspection under Sect. 91 includes also an arrangement in which the motor field supplied from an excitation source is connected in series with the armature through a unidirectional current conducting device, the resistance across the motor armature being omitted, and a second motor field winding being provided to give a minimum motor field. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 343,766, [Group XXXVII].
Patent GB-1083271-A (GB)
Title: Electromagnetic relays
IPC: H01H51/28
Filed: 1966-02-11
Abstract: 1,083,271. Attracted armature relays. JENNINGS RADIO MANUFACTURING CORPORATION. Feb. 11, 1966 [Feb. 15, 1965], No. 6090/66. Heading H2B. A relay having its contacts in a vacuum has terminals extending into the sealed casing 2 and forming fixed contacts 9, 12 which cooperate with a movable contact 18 formed with spring arms which pass on opposite sides of an insulating rod 19 secured to an armature 23 rockable on an abutment plate 32 and retained and biased by a spring 34. The electromagnet 25, 41, 42 is sealed to a closure member 24 on which the abutment plate 32 is fixed.
Patent GB-1531455-A (GB)
Title: Nozzles
IPC: B05B1/12
Filed: 1976-02-13
Abstract: 1531455 Spray-producers C P EQUIPMENT Ltd 13 Feb 1976 [13 Feb 1975] 6179/75 Heading B2F A liquid discharge nozzle comprises a tubular flow control member 2 which is open at one end for connection to a supply of liquid under pressure and closed at the other end 12 and is provided with circumferentially spaced radially extending holes 14 adjacent the end 12, the member 2 being mounted for relative movement in a body member 4 having a discharge passage 8 within which the end 12 is relatively movable and which is of somewhat larger diameter than the portion of the flow control member 2 adjacent the end 12 to provide radial clearance for liquid flowing through the holes 14. The passage 8 terminates in a frusto conical or dished surface 16 whereby, if the member 2 is moved relatively outwardly from the jet discharge position depicted, liquid impinges on the surface 16 to form a generally conical spray pattern. The members 2 and 4 may cooperate via a screw thread and a screw thread or lug and discharge is stopped when the holes 14 lie between sealing rings 32. The nozzle is provided with a rubber grip 34.
Patent GB-348737-A (GB)
Title: Improvements in golf clubs
IPC: A63B53/00
Filed: 1930-02-25
Abstract: 348,737. Golf clubs. BLOMEFIELD, J. W., The Willows, and EASTEN, G. T., The Rectory, both in Sterkstroom, South Africa. Feb. 25, 1930, No. 6261. [Class 132 (ii).] In a golf club of the kind in which the head, Figs. 1 and 6, is rotatable about an extension 2 of the shaft 1 to vary the angle of loft, and is fixed in adjusted position by screw clamping-means, the head comprises a curved portion 4, that projects rearwardly from the upper edge of the striking- face 3 and is formed with an arcuate slot 14, the walls of which are engaged by the clamping-means. The clamping-means comprise a wedge-shaped member 17 pressed into engagement with the tapered walls of the arcuate slot by a screw 16 that enters an arm 13 projecting from the shaft extension. The curved portion of the head is formed of lighter material than the striking face and carries on its upper surface a chart 29 cooperating with an index 28 on the wedge-shaped member. The head is maintained against axial movement by a screw 19 secured by a grub-screw. Shafts.-The length of the shaft is rendered adjustable by forming the handle of a covered metal tube 25 telescopically mounted on an internal metal tube 22 secured to the shaft. The outer tube is secured in adjusted position by a screw 27 passing through a hole therein and entering one of a series of recesses situated in a longitudinal groove in the shaft.
Patent GB-139313-A (GB)
Title: Improvements in or relating to number-plates for railway wagons and the like
IPC: B61D49/00
Filed: 1919-03-13
Abstract: 139,313. Ainsley, R. March 13, 1919. Number plates; signs.-Number plates for railway wagons &c. comprise a base-plate A perforated by pairs of vertically superposed holes B at equal horizontal and vertical distances apart, and separate number units D having holes E on a vertical diagonal line X bisecting a rectangle Y containing the units. The units D are attached to the base-plate A by riveting &c.
Patent GB-515411-A (GB)
Title: Improvements in or relating to the reduction of sexual hormones containing carbonyl groups
IPC: C07J75/00
Filed: 1938-02-28
Abstract: 515,411. Sex hormones. SCHERING AKT.- GES. Feb. 28, 1938, No. 6319. Void. Convention date, Feb. 27, 1937. [Class 2(iii)] The reduction of polyoxo-compounds of the cyclopentanopolyhydrophenanthrene series is effected by the introduction of such compounds into a solution in which a reducing fermentation. is taking place. Agents which bring about suitable reducing fermentation include microorganisms and enzymes obtained therefrom, the preferred material being yeast. The process is of particular interest as applied to compounds having in conjugation with one keto group a carbon-carbon double bond. In an example androstendione is introduced slowly into an actively fermenting mixture of yeast and saccharose, and the fermentation continued for four days. The alcohol is removed and the residue extracted with ether to give androstenol- 17-one-3. The reduction by fermentation of any sexual hormones containing carbonyl groups is also disclosed.
Patent GB-246092-A (GB)
IPC: F01N1/08
Filed: 1925-03-09
Abstract: 246,092. Wolff, W. Jan. 16, 1925, [Convention date]. Exhaust - silencers.- The exhaust gases are passed through a filling of small perforated bodies c of ceramic material. As shown, balls c are carried by a perforated casing b with a perforated cover plate f held in place by a bolt h and nut g. The balls are perforated with cylindrical holes, preferably intersecting in the form of a cross, and the outer casing a is fitted with inlet and outlet members i, k. In a modification, the casing b is replaced by two perforated plates, one fitting in a recess m in the casing a and the other held between the flanges of the casing a and the member i. The bodies c may be cruciform or irregular in shape and those in the lower part of the casing may differ in size from those in the upper part.
Patent GB-235816-A (GB)
Title: Improved terminal adapter for wireless phones or the like
IPC: H01R31/00
Filed: 1925-03-09
Abstract: 235,816. Field, A. A. Dec. 5, 1924, [Convention date]. Couplings.-An adapter for connecting a plurality of wires to one terminal comprises two or more tubes E fixed to a metal base B which has a rod or bifurcated projection to engage with the terminal. The tubes contain bow-shaped springs A to ensure contact with lead ends inserted therein, and are preferably angularly disposed on the base.
Patent GB-821473-A (GB)
Title: Preventing vibration induced by flow instability in a tube-containing duct conveying a gaseous stream
IPC: F22B37/10
Filed: 1957-02-26
Abstract: 821,473. Steam superheaters; feed water heaters. COMBUSTION ENGINEERING Inc. Feb. 26, 1957 [March 28, 1956], No. 6410/57. Classes 64(3) and 123(3) In a steam generator comprising a furnace 10 from which gases flow through a lateral pass 16 locating a secondary superheater 24 into a downpass 18 locating a primary superheater 22 and an economizer 44, the superheaters and economizer consist of platens of multiple-bend U-tubes spaced apart across the width of the passes, the limbs of the U-tubes, instead of being parallel to those of the adjacent platen, being set at an angle # thereto, the angle being approximately equal to tan-<SP>1</SP>K(x-d), L where L is the length of the tube run across the pass, # is the outside diameter of the tubes, x is the distance between the platens and K is unity. If the tube limbs are parallel, severe vibration and intense noise occurs in operation if the laterally-directed gas pulsations which develop at the same frequency across the width of the pass as a result of gas flow instability occurring as the gas passes around the tubes, are in acoustical reson. ance with the chamber formed by the gas pass due to the establishment of a standing wave across the pass. With the adjacent tubes set at the angle the instability generated pulses at any particular frequency do not reach a sufficient energy level to establish a standing wave and the noise and vibration are prevented.
Patent GB-242218-A (GB)
Title: Improvement in pneumatic hammer tool
IPC: B25D17/04
Filed: 1925-03-09
Abstract: 242,218. Ingersoll-Rand Co., (Assignees of Jimerson, F. A.). Oct. 29, 1924, [Convention date]. Percussiwe hand tools.-A pneumatic hammering tool is provided with a resilient handle formed by a spring loop U with a rubber or other grip b. The end Y of the loop is adapted to be pressed against a rod K so as to open the ball valve J controlling the admission of motive fluid.
Patent GB-401554-A (GB)
Title: Improvements in or relating to the manufacture of ammonium chloride and sodium carbamate
IPC: C01B21/12
Filed: 1933-03-02
Abstract: Ammonium chloride is precipitated and recovered from p  concentrated solutions in liquid ammonia by treating such solutions with carbon dioxide.  The process may be employed in the production of sodium carbamate by carbonating sodium chloride in liquid ammonia until the solution is saturated in respect to ammonium chloride, separating precipitated sodium carbamate, further carbonating the solution, and finally separating the precipitated ammonium chloride.  The liquid ammonia may be returned to the first stage of the process after separation of the ammonium chloride.  The precipitation of ammonium chloride is preferably effected at above 7 DEG  C.
Patent GB-540685-A (GB)
Title: An improved valve for controlling the flow of fluids and materials capable of flowing
IPC: F16K7/07
Filed: 1941-05-07
Abstract: 540,685. Valves. LEE, G. R. May 7, 1941, No. 6436/40. [Class 135] A valve device for controlling the flow of gases, liquids and relatively small solid particles comprises two rigid pipes 1, 2 joined by a flexible connection 3 and enclosed in a rigid chamber 8, to which fluid may be admitted to compress the flexible connection and so regulate the flow through the rigid pipes. The controlling fluid, preferably a liquid may be admitted or exhausted through a relatively small bore pipe connected to a reversible pump, cylinder and plunger or a filter pump and valves attached to a water supply. A small air release valve is fitted at 11. The flexible connection may be made of rubber, rubberized 'fabric, leather, the material known under the Registered Trade Mark " Cellophane ", or thin sheet metal. In the form shown the flexible connection comprises two sheets joined at 6 by adhesive and stitching and secured to the rigid pipes by bolts 4 and clamping strips 5. When made of thin metal sheets the edges are joined by soldering or brazing. The rigid pipes may be made of cast iron, mild steel, bronze, the material known under the Registered Trade Marks " Duralumin " and " Bakelite ", porcelain or earthenware. Specifications 19857/06, [Class 8], and 438,087 are referred to.
Patent GB-600830-A (GB)
Title: Comparison gauges
IPC: G01B3/38
Filed: 1945-03-15
Abstract: 600,830. Linear-dimension gauges. FOSTER, S. A. March 15, 1945, No. 6533. [Class 106 (ii)] A comparison gauge comprises a supporting body, a fixed jaw carried thereby and a movable jaw operating with said fixed jaw to calliper a comparison member of annular or cylindrical form, a work-engaging jaw pivotally mounted on the supporting body and coupled to the movable jaw engaging the comparison member for co-ordinated movement therewith, a spring- biassed plunger operating as a second movable work-engaging jaw and means responsive to movements of the plunger for indicating deviations of the work-engaging jaws from the setting determined by the position of the jaws callipering the comparison member. In the gauge shown for matching the outer and inner races of a ball bearing, the outer race 10 is positioned on calliper jaws 12, 11, the first of which is clamped on a calliper head and the second of which is mounted on a plunger 14 which is spring-loaded in order to urge the jaw 11 away from the jaw 12. The jaw 11 may be clamped when in position. A rod extending downwardly from the plunger 14 bears on an extending leg of a further calliper jaw 20, which is pivoted to a bracket 22 adjustably secured to the calliper head and which may be lightly spring-loaded as shown. The bracket 22 is also adjustably secured to a tube 25 through which passes a plunger rod 26 and the lower end of this plunger forms a calliper jaw opposite to the jaw 20, both of which are provided with suitable gauging points to gauge the inner race 27 of the ball bearing. The plunger 26 is urged downwardly by means of a spring and its upper end is in contact with the gauging point 34 of a linear-dimension indicator of any well-known type. An adjustable stop 35 may be provided for convenience in positioning the inner race and lateral stops (not shown) may be provided for the outer race. The device may be supported from an adjustable bracket 38 and the inner race may be checked whilst being ground. The jaw 20 is shown pivoted at its centre but it may be pivoted elsewhere for other types of matching. In an embodiment for comparing the external dimensions of two objects the calliper jaws 11, 12 are replaced by two external calliper jaws, one of which is urged toward the other by a spring.
Patent GB-1028235-A (GB)
Title: Process for the production of cross-linked polyolefines
IPC: C08K5/159
Filed: 1964-02-17
Abstract: A polylefin is cross-linked by heating with a peroxide of formula <FORM:1028235/C3/1> wherein A and A1 are -CH2-CH2-, -CH=CH-, or -C=C-, and R1, R2, R3 and R4 are C1 to C3 alkyl radicals. Conventional additives such as carbon black may also be present.  In the examples, polyethylene is cross-linked using 3,31,6,61,9,91,12,121-octamethyl-1,2,7,8 - tetraoxacyclododecadi - 4,10 - yne.
Patent GB-831050-A (GB)
Title: Improvements in the production of alpha-chloro acrylic acid alkyl esters
IPC: C07C69/653
Filed: 1957-02-28
Abstract: Alkyl esters of alpha-chloro-acrylic acid are prepared by splitting off hydrogen chloride from alkyl esters of alpha : beta-dichloropropionic acid at elevated temperature, using a small amount of a carboxylic acid, amide or imide or nitrile, amine, carboxylic acid or sulphonic acid as catalyst.  The reaction may be carried out in liquid or gas phase.  A polymerization inhibitor may be added to the reaction mixture.  Halides of metals from the 2nd to 8th groups of the Periodic system may be used, in addition to the catalyst, since they effect a lowering of the reaction temperature. In examples, methyl alpha : beta-dichloropropionate is converted into methyl alpha-chloroacrylate by heating in the liquid or gas phase in the presence of the following catalyst, metal halides and polymerization inhibitors: N-methyl-2-pyrrolidone, 2-pyrrolidone, quinoline, pyridine, phenothiazine, N-butyl-pyrrolidine, dimethyl-formamide or -acetamide, N - butyl - or N : N - dibutyl - formamide, phthalimide succinimide, adiponitrile, succininitrile, benzonitrile, N - methyl - or N : N - dimethyl - aniline, (N : N - diethyl) - 2-aminoethanol - 1, (N : N - diethyl) - 3 - aminopropanol - 1, m - chloroaniline and 2 - ethylhexanoic, mono -, di - and tri - chloroacetic, alpha : alpha - or alpha - beta - dichloropropionic, alpha- or beta-chloropropionic, alphachloro - n - butyric, beta - chloro - isobutyric, p - toluenesulphonic, p - nitrotoluene - o - sulphonic acid, benzoic, salicylic, o-chlorobenzoic, riccinic and adipic acids; cadmium chloride; phenothiazine, picric acid and hydroquinone.
Patent GB-230837-A (GB)
Title: Improvements in or connected with cash registers
IPC: G07G1/00
Filed: 1925-03-11
Abstract: 230,837. National Cash Register Co., (Assignees of Pein, E. J. von). March 11, 1924, [Convention date]. Cash registers with operating-means; fullstroke and cash drawer mechanism.-In a draweroperated machine of the kind described in Specification 6428/09 restraint of the drawer-propelling mechanism after release, as by improper manipulation of the autographic printing table, results in interception of the drawer to prevent its opening. The drawer is normally held by a latch 52 linked with arms 50 supporting a bar having a roller 43 resting in a notch in a bell-crank lever 38. Depression of the release key 30 effects the liberation of the roller 43 and allows the spring 57 to rock a shaft 67 and, through link 69 and pivot 70, swing arms 55 to propel the drawer forward. The shaft 67 is connected by bell-crank 66 and link 75 with the printing table 79 so that if this should be held stationary the drawer might be unlatched but registration would not occur. To prevent the drawer from being pulled open, in these circumstances, a lever 121 pivoted at 122 on the full-stroke rack 74 remains in the path of a bracket 124 on the drawer until by the permitted advance of the arms 55 the spring-controlled cam-plate 111 pivoted to one of the arms at 112 rocks a bell-crank 103 and therefore a lever 115 pivoted at 116 to raise the lever 121 into ineffective position. This occurs as soon as the full stroke pawl 73 has reached its first notch. The continuance of the engagement of the totalizer 85 with the actuators throughout the return stroke of the arms 55 is ensured by preventing any action of the cam-plate 111 upon bell-crank 103 at this time. This is effected by a pin 117 on the full-stroke pawl supporting the lever 115 which in turn supports one end of the bell-crank.
Patent GB-752584-A (GB)
Title: Improved spinning composition and process for preparing the same
IPC: D01F6/08
Filed: 1954-03-09
Abstract: Polyvinyl chloride is dissolved in a mixture of dimethyl sulphide and acetone.  The polyvinyl chloride may be dissolved directly in a mixture of the solvents or may first be swollen in dimethyl sulphide and the swollen polymer then dissolved in acetone.
Patent GB-296270-A (GB)
Title: Flotation process
IPC: B03D1/012
Filed: 1928-03-05
Abstract: 296,270. Guggenheim, D., Guggenheim, M., Guggenheim, S. :Et., Guggenheim, S., MacGowan, J., K., and Smith, E. A. C., (trading as Guggenheim Bros.). (Assignees of Fischer, A. H.). Dec. 29, 1927, [Convention date]. Xantho compounds. - Ethoxythiocarbonylethoxycarbonyl sulphide is prepared by allowing ethylchlorocarbonate to react with an aqueous solution of potassium ethylxanthate at below 20‹ C. and diluting the mass with water. The product also contains xanthic anhvdride which is removed bv fractional distillation. Reference has been directed by the Comptroller fo Specification 284,198.