baber/WOPTO huggingface dataset:
Patent GB-962186-A (GB)
Title: Polyurethane elastic threads
IPC: C08G18/72
Filed: 1962-06-25
Abstract: Polyurethanes suitable for melt extrusion comprise the reaction product of a linear polyester of not over 1,400 average molecular weight with at least one di-isocyanate in proportions less than 0.7 or more than 1 mol. of di-isocyanate per mol. of polyester, and of additional di-isocyanate and a dihydric chain extender to give a polymer having a degree of polymerization within the fibre forming range and not exceeding that corresponding to a melt stick temperature of 249 DEG C. Di-isocyanates specified are methylene-bis (4-phenyl isocyanate), toluene di-isocyanate, tetramethylene di-isocyanate, hexamethylene di-isocyanate and meta-xylylene di-isocyanate. The polyesters may be the ethylene and/or propylene esters of adipic, sebacic and/or terephthalic acids. Di-hydric chain extenders specified are 1,4-butanediol and 1,5-pentanediol.
Patent GB-334040-A (GB)
Title: Electric heating elements
IPC: F02N19/10
Filed: 1929-08-09
Abstract: 334,040. Triggs, W. W., (Preferred Electric Co.). Aug. 9, 1929. Heating by electricity. - An electric heating element for heating the oil in the sump. of. an engine at or prior to starting comprises a resistance coil 15 arranged in two insulated layers between vertical tubes 8, 14 extending into the sump 1 from a plug 5 screwed into a pan-shaped base member 3 bolted to the underside of the sump. The ends of the coil are connected by insulated wires 18 to a plug socket 7 at the lower end of the plug 5. The upper ends of the tubes 8, 14, which are secured together, are a close sliding fit in a sleeve 9 to which is secured a plate 10. A cylindrical screen 11 is secured to the plate 10 and to the base 3, the lower end of the space 23 between the tube 8 and the screen being closed by a plate 21 in which the tube 8 is a close sliding fit. A number of openings 25 in the sides of the base 3 below the plate 21 provide communication between the sump and the chamber 24 in the base, the chamber 24 communicating with the interior of the tube 14 through passages 13, 13<1> in the plug 5. A passage 26 in the base registering with an opening in the plate 21 provides communication between the space 23 and a pipe 28 leading to the engine oil pump. During operation of the heater, heated oil within the tube 14 rises and flows out through the top of the tube, its place being taken by oil flowing from the sump, whereby a continuous current of oil is circulated through the heater.
Patent GB-337839-A (GB)
Title: Anti-dazzle devices for artificial lights
IPC: F21V11/16
Filed: 1929-12-24
Abstract: 337,839. Evans, W. Dec. 24, 1929. Lantern screens.-An antidazzle device for a vehicle or other lamp comprises a skeleton cage formed by a number of springy metal stave-like fingers 1 shaped to be sprung over and to grip on to an electric lamp bulb, the fingers extending from the base of the bulb and meeting one another at the apex of the bulb. This device may be used in association with a reflector.
Patent GB-697369-A (GB)
Title: Improvements in bourdon tubes
IPC: G01L7/04
Filed: 1951-10-19
Abstract: 697,369. Pressure gauges. FOXBORO CO. Oct. 19, 1951 [Nov. 1, 1950], No. 24469/51. Class 106 (ii). A Bourdon tube is formed such that in cross-section it has re-entrant blanks. In Fig. 2 the tube 12 is generally oval in cross-section, there being a V-shaped fold 18 at each small radius portion 19 of the oval. In Fig. 3, the tube comprises parallel opposed walls 21, 22 joined at their edges by flexible V-shaped formations 23, 24.
Patent GB-699809-A (GB)
Title: Hydraulic shock absorbers
IPC: F16F9/18
Filed: 1950-10-07
Abstract: 699,809. Hydraulic shock-absorbers. McCANDLESS, R. Jan. 7, 1952 [Oct. 7, 1950], No. 24540/50. Class 108 (iii). A hydraulic shock - absorber having a recuperation chamber 21, Figs. 1, 2, has a reservoir 47 open to the chamber 21 at spaced points 50, 49 which are respectively above and below the normal liquid level. Thus when liquid in the chamber 21 becomes aerated, the more dense unaerated liquid in the reservoir is drawn into the working cylinder. The upper end of the cylinder is connected with the recuperator chamber 21 by a port 41 which is covered by a sleeve 43. The latter opens at a point 43a below the liquid level in the recuperator. In a modification, Fig. 3 (not shown), the sleeve 43 is replaced by a channel-shaped strip which overlies the port 41 and extends below the liquid in the recuperator chamber. Alternatively the strip covers a channel formed in the cylinder wall. The cross-section of the channel is greater than the cross-section of the port 41. At the end of its stroke, the piston cuts off the port 41. A felt, oil-impregnated gland packing 30 supplies lubricant to a sinteredbronze bearing 31. Oil seals 29 and 32 are provided. The shock-absorber damps the action of a coiled spring 15, the precompression of which may be adjusted as shown in Fig. 5. A sleeve 51, forming the spring abutment, is located relative to the end attachment lug 12 on the piston-rod 13, by pins 55 which engage respective helical grooves or slots 54 on an enlarged part of the lug 12. Rotation of the sleeve results in axial movement to select two alternative spring loadings. In the position of greater loading, the pins 55 are retained by engaging a recess or return portion of the grooves 54. Inward movement of the pistonrod is limited by a rubber buffer 17. A spring- loaded piston-type safety-valve (not shown) may be provided centrally of the base partition 33 of the cylinder 18. In operation, on compression, liquid flow through the piston is controlled by a valve 40 and liquid is displaced through the port 41 to the recuperator chamber. On rebound, liquid flows into the cylinder 18 through a base valve 36 and more liquid is displaced through the port 41. The degree of damping on the compression and rebound strokes respectively is controlled by the valves 40 and the port 41. When liquid in the recuperator chamber becomes aerated, the more dense unaerated liquid in the reservoir is drawn through the port 49 and valve 36 into the cylinder. Aerated liquid passes to the reservoir through the upper port 50 which is above the normal liquid level of the recuperator space. According to the Provisional Specification, a one-way valve for the port 41 is provided by a rubber sleeve surrounding the outer surface of the cylinder and covering the port.
Patent GB-518287-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: H02K19/12
Filed: 1938-08-20
Abstract: 518,287. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 20, 1938, No. 24561. Convention date, Aug. 20, 1937. [Class 38 (iii)] The field structure of a synchronous motor is provided with an auxiliary single-phase winding, displaced with relation to the main field winding, to supply slip frequency current to a time-delayed relay which controls the connection of the field winding to its source of excitation. Upon closure of a switch 4 the motor 1 is connected to the supply with its field winding 6 connected in a closed circuit with a resistance 9. A relay 21 is operated and after a time interval closes its contacts 2C in the circuit of the coil of a switch E controlling the connection of the motor field to the D.C. supply 7. The circuit is not completed however until a relay 18 provided with a delay mechanism and fed through a rectifier 16 with slip frequency closes its contacts 19. The relay 18 is fed not from the field winding 6 but by an additional winding 13 mounted on the motor field structure in a position displaced from the field 6. Specification 384,567 is referred to.
Patent GB-374338-A (GB)
Title: Improvements in universal joints
IPC: F16C11/04
Filed: 1931-09-01
Abstract: 374,338. Universal joints. THOMPSON PRODUCTS, Inc., 2196, Clarkwood Road, Cleveland, Ohio, U.S.A. Sept. 1, 1931, No. 24565. Convention date, March 26. [Class 65 (ii).] A universal joint particularly for the steering gear of motor vehicles, comprises a stud, wedgeshaped seating members surrounding the stud, a resilient bushing enclosing the seating members, and a socket receiving the bushing. The socket member 6 has a screwed stem which is clamped in the split end of a hollow tie rod 1; the socket is cylindrical internally, one end being partially closed by an annular flange 12. The stud 23 passes through the aperture of the flange 12, and has a cylindrical portion rotatable in two pairs of semicircular bearing members 14, 15, which have conical outer surfaces and are held on the stud between a collar 28 and a nut 27. Between these bearing members and the wall of the socket is a resilient bushing 18, which is placed in compression by tightening the nut 27. This bushing takes up wear and allows universal movement ; it is held in place by a split ring 32 engaging a circumferential slot in the socket.
Patent GB-721332-A (GB)
Title: Improvements in or relating to devices for the measurement or control of temperature
IPC: G01K7/38
Filed: 1952-10-01
Abstract: 721,332. Thermometers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 1, 1952 [0c 4, 1951], No. 24594/52. Class 97 (3). [Also in Groups XXXV, XXXVI, XXXVII and XXXVIII] A temperature measurement or control device comprises a permanent magnet consisting of magnetic material with negative interaction between the crystal sub-lattices, which magnet acquires a temperature related to the temperature to be measured or controlled, and means sensitive to the magnetic field providing an indication of the temperature to be measured or effecting the required control. The magnetic material may be substantially composed of non-cubic crystals of polyoxides of iron and at least one of the metals barium, strontium, lead or calcium, and may be manufactured as described in Specification 708,127, [Group XXXV]. As shown, the magnet 3 is made of the material referred to, and is connected to soft-iron polepieces 4, 5 between which lies a small rotatable magnet 8. The rotation of magnet 8, indicated by a scale 12 and pointer 11, is dependent on the field set up by magnet 3 and hence its temperature. As the fractional change in field strength is small, sensitivity is low, but may be increased by means of a conventional permanent magnet 13 positioned to oppose the field due to magnet 3. A pair of magnets may be mounted on a pivoted arm, one in the field of a magnet of the material referred to and one in the field of a conventional magnet, so as to balance at a particular temperature. Variations in temperature cause tilting of the arm. Two magnets of the material referred to may be placed close together with their fields in opposition, one fixed and one movable and urged towards the fixed magnet as by gravity. The distance apart of the magnets, which may be indicated by a scale and pointer, is dependent on temperature. A magnet of the material referred to may be rotated in a winding in which a current is set up. The current may give a reading of temperature at a distance. Alternatively, the coil may rotate around a fixed magnet, -In a magnetic circuit, changes in the field of the material referred to may effect changes in the permeability of the magnetic core of a coil, the inductance of which is thus varied with temperature. The inductance may be included in a circuit to give an indication of current variations. Alternatively, the inductance may be included in a bridge circuit with a resistance in which current flows when the temperature-sensitive element differs in inductance from a standard. The temperaturesensitive inductance and the resistance are contained in a space of which the temperature is to be controlled. When the temperature drops, the bridge is unbalanced, and the current flowing in the resistance restores the temperature. In a temperature-sensitive switch, an armature carrying the switch arm is placed between a magnet of the material referred to and a conventional permanent magnet.
Patent GB-771748-A (GB)
Title: Vat dyestuffs and process for their manufacture
IPC: C09B5/40
Filed: 1955-08-26
Abstract: Vat dyes are made by treating with a melt comprising anhydrous aluminium chloride and sulphur dioxide or a sulphite a product obtained by reaction of 6.Bz.1-dianthraquinonylamino - benzanthrone free from acylamino groups with an alkaline condensing agent. Substances lowering the melting point of the melt may be employed, especially alkyl halides.  The products dye or print natural or regenerated cellulose olive-brown shades. In examples, the product obtained by alkaline condensation of 6.Bz.1-di-(a  - anthraqunonylamino) - benzathrone (see example 1 of Specification 337,741 (Class 2(iii)) is treated with an aluminium chloridesodium chloride melt which has been treated with sulphur dioxide, with or without methyl chloride, isopropyl bromide, n-butyl chloride, or amyl chloride. A dyeing example is given.
Patent GB-653739-A (GB)
Title: Improved devices for mounting and coupling bobbins and tubes to spindles
IPC: D01H7/16
Filed: 1947-09-08
Abstract: 653,739. Mounting bobbins on spindles. AKT.-GES. J. J. RIETER, & CIE. Sept. 8, 1947, No. 24686 Convention date, Sept. 7, 1946. '[Class 120 (ii)] A device for mounting and coupling a tube or bobbin on a textile spindle by means of a system movable transversely with respect to the spindle and comprising several spring- loaded coupling- members is characterized by three coupling -members symmetrically arranged circumferentially, and two springs, preferably leaf springs, abutting on each coupling - member, said springs connecting each coupling-member with the other two without coming into contact with the spindle. As shown, two thimbles, 3 and 4, housing the coupling members 8 are mounted on the spindle 2 with a sleeve 7 between them. The coupling-members 8 are pressed by means of leaf springs 10, which interconnect the coupling members, through slots in the thimbles so that abutments 11 are normally bearing on the inner surface of the thimble. When a tube is mounted on the spindle the coupling members 8 are pressed inwards and the springs 10 then maintain frictional contact between the coupling members 8 and the tube.
Patent GB-245855-A (GB)
Title: Improvements in or relating to electric switches and to the manufacture thereof
IPC: H01H23/14
Filed: 1924-10-18
Abstract: 245,855. Crabtree, J. A. Oct. 18, 1924. Switches, quick-action; handles. - The operating member for tumbler &c. switches comprises two portions consisting of a dolly a which may be of insulating material and a member b by which the operating movement is transmitted to the switch mechanism, which may be of the type described in Specifications 218,172, 217,939 or 140,180, the member b being provided with abutment surfaces to limit its movement as described in Specification 140,179. The member a has an operating knob a<2> and an inwardly-directed integral spigot a<1>, which projects through a circular hole b<1> in the cross member b<4> of the U-shaped metal stamping b. Perforations b' are formed in the limbs b<5> of the member b and a perforation a in the spigot a' of the member a so that when the pivot pin c is placed in position as described for example in Specification 142,225, it passes through the perforations in the members a and b enabling the switch operating movement to be transmitted between them. To prevent relative movement between the members a and b a spring washer may be provided or the portion b<4> of the member b may be expanded on the spigot a<1> on the member a. If the portion a is of mouldable . material the stamping b and pivot pin may be placed in a suitable mould and the operating member moulded on to them. In a further modification a bush may pass through the perforations in the members a and b, the bush being swaged at its ends to secure the members together. The bush then forms a bearing for the pivot pin.
Patent GB-233239-A (GB)
Title: Improved water wheel
IPC: F03B1/00
Filed: 1924-10-20
Abstract: 233,239. Macropoulos, A. D., (Macropoulos, C. D.). Oct. 20, 1924. Jet wheels.-A water-wheel 1 having peripheral pockets 4 is enclosed in a casing which touches it along the arcs 10-11, 12-13. Inlets 6, 7 and an outlet 8 for the exhaust are provided together with air-holes 9 for facilitating the exhaust.
Patent GB-187115-A (GB)
Title: Improvements in buckets for elevators, dredgers, excavators, and the like
IPC: E02F3/14
Filed: 1921-09-20
Abstract: 187,115. Handley, G., and Bullock, P. W. Sept. 20, 1921. Endless-chain machines.-In bucket excavators &c. the front wall 1 and the side walls 2 of each bucket are rigidly secured to a belt or chain 3 and the back wall 4 is either hinged to the side walls, or to the belt &c., and is moved to discharge the contents of the bucket when an arm 6 comes into engagement with a cam surface 7. A part of the cam surface may be shaped so as to return the back wall to its normal position, or a separate cam 10 may be provided for this purpose. In a modification, Fig. 2, a link 15 connects the back wall to an arm 11 pivoted to the belt &c. and projected below the belt by a spring 16. When a rotary cam 17 comes into contact with the joint between the arm 11 and link 15, the back wall is moved. The inner surface of each back wall may be concave.
Patent GB-379858-A (GB)
Title: Improvements in knives
IPC: B26B3/08
Filed: 1931-09-04
Abstract: 379,858. Cutting-appliances. ANSTRUTHER, D., of Williamson & Son, Ltd., Lancashire. Sept. 4, 1931, No. 24913. [Class 31 (ii).] A knife for cutting leather has a cutting edge A and on auxiliary cutting edge C formed on a twisted shank B.
Patent GB-1003464-A (GB)
Title: Method of, and apparatus for, braking a rotating machine
IPC: F16D65/22
Filed: 1962-06-29
Abstract: 1,003,464. Fluid-pressure brakes. ALLMANNA SVENSKA ELEKTRISKA A.B. June 29, 1962 [June 30, 1961], No. 25011/62. Heading F2F. In a method of braking a rotating machine, e.g. the rotor of a large generator, one or more brake blocks 3 are pressed against a braking surface 2 rotating with the machine in such a way that the product of the speed and the braking pressure on the brake block or blocks is substantially constant for the greater part of the braking action. The product of the speed and the braking pressure may be greater at the start than that corresponding to the constant product. As shown an A.C. tachometergenerator 5 running at the same angular velocity w as the rotor 1 and having an output voltage proportional to w has connected across it an inductance L in series with a resistance r which together with a rectifier 7 produces a   current i = k<SP>w</SP>/ r+jLw  , where k is a constant and j equal #-1, in a winding 9 of an electrohydraulic or electro-pneumatic regulator 10. The latter is supplied with pressure medium from a pump 11 and is arranged to give a linear relationship between the current i and the pressure P in the actuating cylinders 4.
Patent GB-383999-A (GB)
Title: Sizing treatment of artificial silk yarns and threads
IPC: D06M15/15
Filed: 1931-09-07
Abstract: The warp or skein sizing process for artificial silk described in the parent Specification is modified by using a composition comprising casein and a hygroscopic material such as corn sugar, glucose and glycerine, to which may be added a preservative such as sodium fluoride, an animal glue, dextrin or dextrinized starch containing material, a solubilizing agent for casein, for example ammonia, and neutralized sulphonated castor or olive oil.  An aqueous solution of the size is used at a temperature of 140-160 DEG  F.ALSO:The warp or skein sizing process for artificial silk described in the parent Specification is modified by using a composition comprising casein and a hygroscopic material such as corn sugar, glucose and glycerine, to which may be added a preservative such as sodium fluoride, an animal glue, dextrin or dextrinized starch containing material, a solubilizing agent for casein, for example ammonia, and neutralized sulphonated castor or olive oil.  An aqueous solution of the size is used at a temperature of 140-160 DEG  F.
Patent GB-296419-A (GB)
Title: Improvements in printing plate graining machines
IPC: B24B39/06
Filed: 1928-08-31
Abstract: 296,419. Zarkin Machine Co., Inc., (Assignees of Zarkin, C.). Aug. 31, 1927, [Convention date]. Abrading medium, article moved in, through, or similarly in contact with.-In a machine for graining printing-plates, the machine base or main frame 12 carries a sliding guide frame 22 which is movable thereon in one direction by means of longitudinal guides 23, 24, while a tub 7 carrying the printing plates and graining marbles is hinged at 8 to a sub-frame 9 which is independently supported on the base by balls 13 running in cups 14 and is given a circulating movement by means of a single eccentric 16 mounted on the base. The sub-frame is restrained and guided at 28 so as to move in a direction transverse to the movement of the guide frame. At one end of the tub a trough with. diamond shaped perforation 37 and a catch basin 38 beneath may be arranged. The eccentric shaft may be driven by spiral gearing 33 from a shaft 34 and counterweights 31, 32 are provided.
Patent GB-1309188-A (GB)
Title: Key lock fitments
IPC: B41J5/20
Filed: 1971-04-19
Abstract: 1309188 Keyboards SUMLOCK ANITA ELECTRONICS Ltd 19 April 1971 [26 Jan 1970] 25133/71 Heading B6F [Also in Division E2]  A fitment 1 for permitting operation of a shift key 2 while preventing effective operation of a shift lock key 4 permits downward movement of the shift key 2 but prevents downward movement of the key 4 relative to the key 2. The fitment may comprise a member as shown which includes a ledge 9 preventing relative depression of the key 4. In a modification (Fig. 5, not shown), a fitment (11) couples the shift and shift lock keys together so that no relative movement therebetween is possible.
Patent GB-155414-A (GB)
Title: Electric contact maker for railways
IPC: B60L5/38
Filed: 1919-10-14
Abstract: 155,414. Roe, N. P. Oct. 14, 1919. Track apparatus actuating signals on trains and for stopping trains. - A rotary contact maker is fitted on the locomotive and is operated by a metal brush fitted to the rails or sleepers. The brush, according to the Provisional Specification, may work in conjunction with the signal arm so as to be moved out of the path of the contact maker when the signal is lowered. In the construction shown in Fig. 1, the contact member consists of a rotary insulating disk B weighted at one point and having a metal drum extension E with an insulating inset on which spring contacts H, I normally rest. When the drum is rotated by rubbing along the fixed brush the contacts H, I are interconnected and the circuit closed. An additional contact maker K, L may be operated by the centrifugal device J when the rotary disk is revolved. According to the Provisional Specifi. cation a rotary disk is mounted on the track between two arms of stainless steel which, when bridged by a metal brush on the train, complete the circuit even if the disk sticks. Normally however the disk is caused to revolve, and by means of a cam formation on one face presses a spring contact against a fixed contact. A depression in the face of the disk allows the switch to open if the weighted disk sticks in the dead-centre position. Specification 155,516 is referred to.