baber/WOPTO huggingface dataset:
Patent GB-887133-A (GB)
Title: Improved variable-speed power transmission mechanisms
IPC: F16H41/26
Filed: 1960-05-24
Abstract: 887,133. Hydro-mechanical variable-speed gear. GENERAL MOTORS CORPORATION. May 24, 1960 [June 10, 1959], No. 18220/60. Class 80 (2). In a combined torque converter and planet gear an input shaft 10 is connected to an impeller 12 and to a sun 27 of a first sun-ring planet train, a first turbine 14 is connected to an output-connected carrier 23 of said first train for forward drive throughout the operation, and a second turbine 15, connected to a sun 34 of a second sun-ring planet train having a carrier 36 reacting on a one-way detent 38 and to a first train ring 28 through a one-way clutch 32, is reversely driven at low impeller speeds to forwardly drive, at reduced speed and increased torque, an output-connected second train ring 41, thereby augmenting turbine 14 torque, and is forwardly driven at high impeller speeds to forwardly drive the first train ring 28, the carrier 36 over-running, to provide, with the input-connected sun 27, a split torque drive augmenting turbine 14 torque. A reactor 16 reacts on a one-way detent 17. At converter coupling stage the turbines approach a common speed and a split torque drive having a high proportion of direct mechanical torque is provided. A direct drive clutch 45 is provided between input and output shafts 10, 24. The planet trains may be positioned rearward (Fig. 2, not shown), or, as shown, forward of the torque converter and may be spaced therefrom. The incidence of the second turbine 15 blades is variable during operation. An increase (or decrease) in the ratio of the second planet train lowers (or raises) the overall speed ratio at which the speed of the second turbine stops increasing in a negative direction and provides a higher (or lower) stall torque ratio and a higher (or lower) torque ratio over a shorter (or longer) initial speed ratio range. Increasing (or decreasing) the ratio of the first planet train decreases (or increases) the torque transmitted by the sun 27 assuming the same torque from the second turbine 15. The Specification includes graphs in respect of torques, speeds and efficiencies. Details are also provided in respect of ratios of the planet gear trains and torque converter blade angles.
Patent GB-313570-A (GB)
IPC: D04B9/46
Filed: 1929-06-13
Abstract: 313,570. Dietrich, H. June 14, 1928, [Convention date]. Stockings and socks.- A flat piece of fabric for a stocking &c. leg is worked down to the line 2. Knitting is discontinued on the centre part while side pieces 3, 4 for the heel are worked. These pieces form loops or tubes of fabric which are subsequently cut along the lines 6 through some waste courses. After the foot has been completed, the blank can be seamed up in the usual way. In a modification. the tubes are made only large enough to provide for the waste courses, and the heel parts are knitted thereto after the foot has been completed.
Patent GB-984818-A (GB)
Title: Improvements in shaping on slotting machines
IPC: B23D13/00
Filed: 1960-05-24
Abstract: 984,818. Planing. R. KOCHAR. May 24, 1961 [May 24, 1960], No. 18355/60. Heading B3L. A slotting or shaping machine comprises a ram D carrying tools for cutting on each stroke of the ram. The ram is reciprocated by a motor G1 driving an adjustable crank E2 connected to the ram by a link E. The motor also drives a crank H to operate a ratchet feed device J, K. The tools are mounted in a clapper box moved to one position by a spring P and to the other by a solenoid M, acting through cams N, N1 and a rod O1, and operated by switches S actuated by a dog S1 on the ram. The tools may be side-by-side or one behind the other.
Patent GB-1495272-A (GB)
Title: Protection apparatus
IPC: G08B13/16
Filed: 1975-04-23
Abstract: 1495272 Machinery safety devices SACOL CONTROLS Ltd 23 April 1975 [26 April 1974] 18422/74 Heading F2J [Also in Divisions G1 and G4]  Machinery guarding apparatus comprises a signal generator CPG, a transmitter of radiant energy TX, a receiver RX, gate means TG1 for example, means responsive to the presence for a predetermined period of the output signal from receiver RX to cause the gate means to inhibit passage of the input signal to TX, and thereafter responsive to the absence of said signal for a predetermined period to cause the gate means to enable said passage, and detector DET2 responsive to the cyclic presence and absence of the said output signal to indicate that the radiant energy is not obstructed and the apparatus is functioning correctly. Positive pulses of 10 Ás width at a frequency of 1000 per second from clock pulse generator CPG are transmitted as pulses of radiation to receiver RX. Second gate means TG2 operates alternately with gate TG1 to inhibit and enable passage of the output signal of receiver RX via synchronous detector SD acting as an AND gate and inhibiting electrical interference and spurious light changes. Detector DET1 gives a positive D.C. output when input pulses are present and this is converted to a rectangular waveform by hysteresis circuit H. Bi-stable circuit JK is triggered only by positive-going changes in the output of circuit H. A 1 Ás delay circuit DLY ensures that the circuit JK is triggered before the output of circuit H reaches AND gates &1 and &2. The outputs Q. and Q of circuit JK are complementary alternating signals each with a period of 20 msec., the gates TG1 and TG2 being inhibited alternately every 10 msec. for a duration of 5 msec. When more than two checking loops are required the bi-stable circuit JK may be replaced by a shift register. In a multi-channel embodiment (Fig. 2, not shown) the output signals of three receivers are fed via a channel inhibitor and channel selector to detector DET1. The channel selector is fed with a train of pulses from the generator CPG to provide synchronous gating and selects one channel dictated by binary coded decimal data supplied by a counter (CNTR). This data corresponds to the number of negative going output pulses of an inverter (INV2) which receives the output of circuit H. The channel inhibitor and channel selector inhibit all channels alternately every 10 msec. for a duration of 5 msec., the channel selector changing channels at the start of each inhibit operation. For employing two checking loops on an even number of channels two sets of channels each with an odd number may be interlaced with each other. Preferably with the generator signals to one set out of phase with those to the other set to eliminate cross-talk. The apparatus may be used for machine or security guarding systems.
Patent GB-818799-A (GB)
Title: Valve assembly for metallurgical furnaces or the like
Inventor: POTTMEYER EDWARD WILLIAM
IPC: F27D7/02
Filed: 1956-06-14
Abstract: 818,799. Fluid-actuated valves. BLAWKNOX CO. June 14, 1956, No. 18473/56. Class 135. A hinged plate valve controlling, e.g. air flow alternatively through a pair of conduits to an open-hearth, reversing furnace, comprises a valve body 15, Fig. 3, having an inlet 22 connected to a blower and outlet pipes 24 welded thereto leading to regenerators. The inner ends of the pipes 24 are obliquely faced to provide valve seats 25 between which a valve member 26 mounted on a shaft 40 may swing to seat on one or other of the seats. The valve member comprises a pair of spaced oval-shaped plates 32, connected together by bolts 34 and spacers 35 and a member 33 therebetween through which the lower four spacers pass with clearance. The member 33 is pivotally mounted on the shaft 40 and resiliently connected to the plates 32 by means of springs 42 surrounding the middle two spacers so that whichever plate is applied to its seat it will seat evenly thereon. Rubber gaskets 37 are fitted, one for each plate, to improve the sealing between the respective plate and its seat. The valve member is operable by a double-acting pneumatic motor 51, air being supplied to the motor by means of a solenoid-actuated valve and non-return check valves, one in each line 55, 56 to move a piston 50 connected by an arm 48 with the shaft 40. The check valves include a valve member 59, Fig. 8, having a restricted passage 60 therethrough to allow restricted exhaust from the appropriate end of the cylinder when the valve 59 is seated.
Patent GB-477691-A (GB)
Title: Improvements in contact structures for electric switches
IPC: H01H1/14
Filed: 1936-07-03
Abstract: 477,691. Switch contacts. BRITISH THOMSON-HOUSTON CO., Ltd., and COX, H. E. July 3, 1936, No. 18564. [Class 38 (v)] When the movable contact 1 is raised to close circuit, it first engages the lower ends of a plurality (four, as shown) of radiallyarranged fixed contact members 3, which are notched at 5 to engage pegs 4 rounded at their ends to provide pivots. Further upward movement of 1 causes members 3 to rotate about their pivots until the whole of their contact faces engage the surface of 1. When lowering 1 to open circuit, the leverage exerted between the lower corners of members 3 and the faces thereof causes them to be prized free if they have become fused to contact 1. The members 3 are preferably rectangular in cross-section and are provided with springs 7 which bias them downwardly by bearing on a member 9, the prongs of which lie on either side of, and are pivoted at 10 to, members 3. The upper ring support 8 of the springs 7 is fixed by bolts 11 to a plate 6 which acts as a stop to members 3. The Figure shows the contact structure applied to the explosion pot of Specification 477,702.
Patent GB-1510537-A (GB)
Title: Impact resistant polyvinylchloride
IPC: C08L51/02
Filed: 1975-05-02
Abstract: 1510537 Graft polymer/vinyl chloride polymer compositions DYNA31IT NOBEL AG 2 May 1975 [7 May 1974] 18566/75 Heading C3M A composition comprises (a) a polymer of vinyl chloride and (b) the product obtained by grafting vinyl chloride on to (i) a copolymer of ethylene and vinyl acetate or (ii) a copolymer of ethylene and an alkyl acrylate in the gel phase, the said copolymers containing 2À5 to 15% by weight of vinyl acetate or alkyl acrylate, examples are given in which polyvinyl chloride is blended with a graft polymer produced by grafting vinyl chloride on to a copolymer of ethylene with vinyl acetate, n-butyl acrylate or ethyl-n-hexyl acrylate, dibutyl tin mercaptide and polyethylene wax.
Patent GB-256237-A (GB)
Title: Improvements in flexible couplings
IPC: F16D3/16
Filed: 1926-07-27
Abstract: 256,237. Nicholson & Co., W. H., (Assignees of Nicholson, H. S.). Aug 3, 1925, [Convention date]. Shaft couplings; universal joints. -Shaft-coupling heads are provided with aligned dovetailed slots, which are loosely engaged by wedge-shaped blocks having a tendency to be thrust inwards by the transmitted load and outwards by centrifugal force, whereby the play is taken up and " chattering " eliminated. The flanges 19, 20, Figs. 1 and 2, of coupling heads 17, 18 are provided with a preferably odd number of slots 21 to receive loosely-fitting wedge blocks 22. To allow for want of shaf-alignment, the inner faces 23 of the blocks 22 are relieved into concave form. A divided lubricant casing 24, 25, which retains the blocks axially, may be rigid with the part 18 or bear freely thereon. In a modification, a lubricant casing 44, Fig. 6, and a modified coupling head 39 are channelled to receive packing 47, the casing having a filling-plug 51 and engaging a flange 48 on the other head 49, to which it is secured by screws 49. The wedge blocks 22, of which only three may be provided, have flat bases, the coupling-head slots being bevelled, as shown at 35, to accommodate misalignment. The blocks may have cushioning-pads of asbestos composition, leather, fibre, brass, &c., secured by screws 33 on their operative faces. The casing may be dispensed with, discs being then provided to retain the blocks axially. The alternative modifications described are applicable to either constructional form of the invention. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also cushioning-pads of " Raybestos." This subject-matter does not appear in the Specification as accepted.
Patent GB-634088-A (GB)
Title: Improvements in negative feed-back amplifiers
IPC: H03G3/08
Filed: 1946-06-21
Abstract: 634,088. Valve amplifying circuits. SADIRCARPENTIER. June 21, 1946, No. 18750. Convention date, June 21, 1945. [Class 40 (vi)] The negative feedback applied to an amplifier across an impedance is controlled by a D.C. voltage applied to a valve whose anode-cathode resistance shunts the impedance. In one embodiment, Fig. 3, the cathode resistance 5 of an amplifier valve 1 is shunted by a control valve 8 with its cathode connected to the cathode of valve 1. The amount of negative feedback applied to the amplifier valve 1 from a following stage 2 is varied by a negative control voltage applied to the grid of valve 8. In a modification, Fig. 4 (not shown), part of the output of the following stage 2 is applied to the grid of the control valve. The feedback to the amplifier 1 varies according to the phase and magnitude of the energy applied to the grid of the control valve, and may become positive. In a further modification, Fig. 6 (not shown), the cathode resistance of the amplifier valve is shunted by a parallel tuned circuit, and a fraction of the output of the following stage is fed to the grid of the control valve through a filter network. This enables the response of the amplifier to be reduced round the resonant frequency of the tuned circuit, and to be increased by an amount depending on the control voltage for frequencies within the pass band of the filter. In another embodiment, Fig. 5, the anode of the control valve 8 is connected to the cathode of the amplifier valve 1 through a blocking condenser 12. A portion of the output of the following stage 2 is fed to the grid of valve 8 through a potentiometer 13, 14. In a modification, Fig. 7 (not shown), part of the input to the amplifier is fed to the grid of the control valve, so that the amount of negative feedback is reduced for frequencies contained in the input, and the gain is reduced for unwanted frequencies. The amplifier may form part of a receiver, when the automatic volume control voltage may be applied to the control valve.
Patent GB-755787-A (GB)
Title: Synthetic resins and their production
IPC: C08F8/30
Filed: 1954-06-27
Abstract: Hydroxyl group containing reaction products of copolymers derived from carbon monoxide and olefines, such as ethylene, propylene and butylene, are reacted with polyisocyanates such as toluylene di-isocyanate, hexamethylene di-isocyanate, cycloaliphatic polyisocyanates, the reaction product of toluylene di-isocyanate with trimethylol propane, the reaction products of polyalcohols, polyglycol ethers or hydroxyl group containing polyesters with an excess of polyisocyanate, also compounds splitting off polyisocyanates on heating, for example phenyl urethanes, or the reaction products of polyisocyanates with acetoacetic or malonic ester.  The hydroxyl group containing copolymers may be obtained by reducing olefine/carbon monoxide copolymers by pressure hydrogenation, or by the use of aluminium isopropylate, alternatively methylol groups may be introduced into the copolymers by reaction with formaldehyde, preferably in the form of paraformaldehyde. Before being reacted with the polyisocyanates the reduced copolymers may be subjected to partial esterification with monocarboxylic or dicarboxylic acids such as propionic or maleic anhydride; alternatively the reduced copolymers may be reacted with paraformaldehyde to introduce methylol groups into the molecule.  The reaction between the polyisocyanates and the hydroxyl group containing copolymers is preferably carried out in solution in a solvent which contains no hydroxyl groups, though if compounds splitting off isocyanate groups are used hydroxyl group containing solvents may be employed.  In an example a process is described in which a mixture of a hydrogenated ethylene/propylene/carbon monoxide copolymer and a hydroxyl group containing polyester derived from adipic acid, 1,3-butylene glycol and trimethylol propane is reacted with toluylene di-isocyanate.  The products may be used in the manufacture of lacquers, varnishes, adhesives, protective coatings and moulded objects.
Patent GB-978158-A (GB)
Title: Improvements in or relating to building assemblies of masonry blocks
IPC: E04B2/46
Filed: 1961-05-24
Abstract: 978,158. Block walls. ENTREPRISE ROUZAUD ET FILS. May 24, 1961 [July 4, 1960], No. 18819/61. Headings E1B and E1V. A wall is assembled from masonry blocks of various thicknesses each having apertures 4 by which the blocks are joined with concrete dowel plugs 14. The blocks also comprise an undercut edge 26, open cavities 5, a plane end free or alternatively an end recess 8, and a recessed underface with bearing surfaces 6. Metal links may be cast into each block to provide a horizontal tying system. The wall may comprise single blocks 22, thin blocks 23 enclosing a cavity 25, or two different blocks 23,24, and the quality of the material used may differ between blocks. The positions of thin and thick blocks 23, 24 may be alternated. The cavities in a wall may be filled with reinforced concrete.
Patent GB-146965-A (GB)
Title: Carburetter for internal combustion engines
IPC: F02M3/08
Filed: 1920-07-06
Abstract: 146,965. Pordes, D. March 9, 1917, [Convention date]. Spray carburettors.-The constricted passage around the fuel nozzle is obtained by enlarging the throttle valve, the nozzle being formed in the valve. As shown, the stem of the valve f is hollow and dips into the float-feed chamber a, three horizontal passages m, n, o leading from the central enlargement of the stem. At starting and during slow running the passage n forms the fuel nozzle, while during normal working the passage o forms the nozzle; air is drawn through the passage m, the amount being regulated by the valve l.
Patent GB-786104-A (GB)
Title: Preparation of unsaturated polyene compounds
IPC: C07C1/24
Filed: 1955-06-30
Abstract: The invention comprises a compound having the formula <FORM:0786104/IV (a)/1> and a process for preparing an unsaturated polyene compound comprising contacting a b -hydroxy carboxylic acid of the formula <FORM:0786104/IV (a)/2> wherein R is a conjugated polyene radical, each of the symbols R1 and R11 is a hydrogen atom or a lower alkyl radical, and R111 is a hydrogen atom, a lower alkyl radical or a conjugated polyene radical, with an acid anhydride under substantially anhydrous conditions to form a compound having the formula <FORM:0786104/IV (a)/3> As acid anhydrides there may beused acetic anhydride, n-butyric anhydride, n-propionic anhydride, n-caproic anhydride, phthalic anhydride and succinic anhydride. Starting materials, some of which are used in the examples, are 1-(2,6,6-trimethyl-1-cyclohexen-1-yl) - 3,7 - dimethyl - 7 - hydroxy - 8 - carboxyl-1,3,5-nonatriene and the corresponding octatriene, 1 - (2,6,6 - trimethyl - 1 - cyclohexen - 1 - yl) - 3 - methyl - 3 - hydroxy - 4 - carboxy - 1 - pentene and the corresponding butene, 1-(2,6,6-trimethyl - 1 - cyclohexen - 1 - yl) - 3,7,10 - trimethyl - 9 - hydroxy - 10 - carboxy - 1,3,5,7-decatetraene, 1 - (2,6,6 - trimethyl - 1 - cyclohexen - 1 - yl) - 3,7 - dimethyl - 9 - hydroxy - 10 - carboxy - 1,3,5,7,11 - dodecapentaene, 1 - (2,6,6-trimethyl - 1 - cyclohexen - 1 - yl) - 3,7,11 - trimethyl - 9 - hydroxy - 10 - carboxy - 1,3,5,7,11 - dodecapentaene, 1 - (2,6,6 - trimethyl - 1 - cyclohexen - 1 - yl) - 3,7 - dimethyl - 9 - butyl - 9 - hydroxy - 10 - carboxy - 1,3,5,7 - decatetraene, 1 - (2,6,6 - trimethyl - 1 - cyclohexen - 1 - yl) - 3,7,10 - trimethyl - 9 - hydroxy - 10 - carboxy - 1,3,5,7 - dodecatetraene, 1 - (2,6,6 - trimethyl-1-cyclohexen - 1 - yl) - 3,7,10 - trimethyl - 9 - hydroxy - 10 - carboxy - 1,3,5,7 - tridecatetraene, and 6 - hydroxy - 7 - carboxy - 2,4 - heptadiene.  Starting compound.  1 - (2,6,6 - Trimethyl - 1-cyclohexen - 1 - yl) - 3,7,10 - trimethyl-9-hydroxy-10 - carboxy - 1,3,5,7 - decatetraene is obtained by condensing Vitamin A aldehyde with a -bromo-propionate in the presence of zinc and hydrolysing the b -hydroxy ester thus produced.
Patent GB-756509-A (GB)
Title: Process for the preparation of a piperidine derivative
IPC: C07D409/12
Filed: 1954-06-28
Abstract: Compounds of the formula <FORM:0756509/IV(a)/1> where R is methyl or ethyl (see Specification 717,227) are prepared by reacting the corresponding 1 - alkyl - 4 - thenylamino - piperidines with mono-halogenated benzenes; if desired, they may be converted into salts.  The process may be carried out at room or higher temperature and an acid-binding agent is preferably present, e.g. alkali carbonate, alkali amide or copper powder; a solvent may also be used. An example is given of the process using 1 - methyl - 4 - (21 - thenylamino) - piperidine, bromobenzene and copper powder; the tartrate of the product is described.
Patent GB-320063-A (GB)
Title: Improvements in signs for advertising and like purposes
IPC: G09F13/14
Filed: 1928-07-02
Abstract: 320,063. Lugg, E. T. F. July 2, 1928. Radial boards and like elements, rotating; actuating and controlling .-A daylight sign of the overhead stencil type is fitted with a rotating windoperated vane 5 to produce a flashing effect. The ends 4 of the sign are extended upward to house the ends of a spindle 6 on which the vane is mounted. Louvres 7 direct the air currents on to the vane. The surface a may be made reflecting to illuminatethe vane which may be coloured. A wind-operated brake may be provided to prevent too rapid rotation of the vane. A separate wind motor may be provided for rotating the spindle 6.
Patent GB-1347506-A (GB)
Title: Crop driers
IPC: F26B25/00
Filed: 1971-06-07
Abstract: 1347506 Crop dryer C VAN DER LELY NV 7 June 1971 [11 June 1970] 19294/71 Heading F4G A crop dryer comprises a drying space 1 and heating equipment 5 which includes a burner 6 and heat exchanger 7 for heating air which is forced into a passage 4, having slots in its roof, by a fan. Crop is admitted to the space 1 through doors in the wall furthest from the burner 6, a conveyer 2 moving it towards a second conveyer 3 having hook-like tines which engage the crop and convey it upwardly. At a predetermined height the crop is dropped, the cycle then being repeated until the crop is dry. Some of the crop will inevitably fall into the passage 4 from where it is removed by a worm conveyer driven from the conveyer 2 by gearwheels 12, 13. In modifications, the conveyer is replaced by a collecting trough or by a canvas sheet placed on the floor of the passage 4 and removed when required.
Patent GB-1574082-A (GB)
Title: Process for the manufacture of tertiary optically active aliphatic compounds
IPC: C07C17/20
Filed: 1977-05-09
Abstract: A process for asymmetrically hydrogenating through the use of microorganisms a double bond connected to tertiary carbon atom in an olefinic aliphatic compound to produce a tertiary, optically active aliphatic compound useful as an intermediate for optically active Vitamins E and K.
Patent GB-838039-A (GB)
Title: Improvements in or relating to semi-conductor rectifier stacks
Inventor: BROOKS NORMAN COLSTON
IPC: H01L25/07
Filed: 1958-06-17
Abstract: 838,039. Semi-conductor rectifier stacks. STANDARD TELEPHONES & CABLES Ltd. June 17, 1958, No. 19344/58. Class 37. A form of construction for a crystal rectifier mainly for use in high-voltage equipment, giving a largely tubular stack with semispherical ends and yet having comparatively large cooling fin surface comprises diodes of the " top hat " type bolted to the centre of insulating spiders with cooling members of cup shape interposed between the diode and the spider. The spiders are then threaded on to mounting studs together with two semi-spherical end plates to form the assembly as shown in Fig. 1. Insulating discs may be used in place of the spiders the discs being well perforated by holes to permit the flow of cooling medium around the fins. Alternatively the insulating spiders or discs may be omitted and the cooling fins carrying the diodes secured to longitudinal support rods by dowels or preferably screws, Fig. 4 (not shown).