baber/WOPTO huggingface dataset:
Patent GB-1399124-A (GB)
Title: Laminated glass articles
IPC: C08G18/66
Filed: 1972-06-21
Abstract: 1399124 Transparent laminates PPG INDUSTRIES Inc 21 June 1972 [21 June 1971 10 April 1972] 28976/72 Heading B5N An optically-clear, energy absorbing laminate comprises at least one glass sheet bonded to a sheet of substantially unreacted isocyanate free thermoplastic, transparent, polyester urethane drived from (a) a hydroxy-terminated polyester having linkages, a number average molecular weight between 500 and 5000 and melting above 50‹ C., said polyester either being derived from a caprolactone or being the reaction product of an aliphatic or aromatic diol and an aliphatic or aromatic dibasic acid, (b) an aliphatic or cycloaliphatic hydrocarbon diisocyanate, and (c) an active hydrogen compound containing two active hydrogens per molecule reactive with isocyanate groups and having a molecular weight of less than 250, the mole ratio of (c) to (a) being from 0À5 : 1 to 10 ; 1 and increasing with increasing molecular weight of (a), the isocyanate groups provided by (b) being substantially numerically equivalent to the sum of active hydrogens and hydroxyl groups provided by (c) and (a) to provide a polyesterurethane that is substantially free of unreacted isocyanate groups, said mole ratio of (c) to (a) being so proportioned within said range that a rigidly held laminate prepared from sheeting about 0À030 inch thick of said polyester-urethane sandwiched between two 12 x 12 Î 1/8 inch sheets of glass is non-brittle at 0‹ F. and exhibits a mean penetration velocity of at least 20 miles hour at laminate temperatures of 0‹, 70‹ and 120‹ F. when impacted with a five pound free falling steel ball. In an embodiment of the invention, a minor proportion of the polyester is replaced by a different polymer. Many suitable reactants for producing the polyester urethanes are listed and preparatory examples are given. The laminates of the invention may be made by heating the components assembled in a bag, firstly under vacuum and secondly in an autoclave. A preferred embodiment comprises two sheets of glass, one of which may be releasable, sandwiching the polyester-urethane. When a sandwich laminate is made, the polyester-urethane layer may be formed in situ between two glass sheets. The product of the invention may be used as motor vehicle windscreens.
Patent GB-304111-A (GB)
IPC: A44B3/04
Filed: 1928-10-09
Abstract: 304,111. Neumann, H. May 21, 1928, [Convention date]. Studs.-A collar stud of the kind in which the head f may be tilted on the shank has its shank a slotted at c so as to leave the same thickness of material at the sides d and free end e and to permit the head f to be slid along the shank into the position shown. A bar g carried, by the head f passes through the slot c and the construction permits the head f to be held with moderate tightness in all its positions, without the use of springs.
Patent GB-226934-A (GB)
Title: Improvements relating to mops and the like
IPC: A47L13/46
Filed: 1923-11-17
Abstract: 226,934. Cliffe, J. W. Nov. 17, 1923. Handles or holders with clamping-devices for mops and the like.-The handle b<2> is fixed in a ferrule b<1> having a flange b against which the mop cloths, dusters &c. are clamped by a U- shaped wire member A the upper ends a of which are pivoted to the legs C of a U-shaped lever C, C<1> pivoted intermediate of its ends on the ferrule b' at c. The clamp A is guided by holes B in the flange b. When the lever C, C<1> is turned into the position shown the connections with the member A pass beyond the pivot centre c so that the lever and clamp are locked in the clamping position, and the lever, being cranked or bent to the form shown at C' engages the side of the ferrule b<1>.
Patent GB-192751-A (GB)
Title: Improvements in bed-rests
IPC: A47C20/08
Filed: 1921-11-02
Abstract: 192,751. Cairns, L. M. Nov. 2, 1921. Bed-rests; adjustments.-A bed rest adapted for use either in combination with a bed or as a simple back rest comprises a short stretcher having two side members A connected by tierods a<1>, a back rest B pivoted to the stretcher at b<1>, and a compound leg rest C, D, E. The back rest is adjustably supported by struts b<4> engaging notches a<2>, and is fabric covered or padded. The part C of the leg rest is adjustably and detachably pivoted to the stretcher by bolts having wing nuts c<4> which engage recesses a<4> in slots a<3> in the stretcher. The part D is pivoted to the part C and has pivoted to it the foot rest E, the inclination of which may be adjusted by tie rods F and notched slots f<3>. The inclination of the leg rest is varied by tension-members G, which also serve as arm rests, and are connected to the part C and the back B or stretcher A. For use as a back rest alone the entire leg rest can be detached. The Provisional Specification also describes a construction in which the leg rest and stretcher are connected by means of headed studs and plates having key-hole slots. Specification 145,108 is referred to.
Patent GB-791459-A (GB)
Title: Electric arc welding
IPC: B23K35/30
Filed: 1955-10-12
Abstract: Consumable wire electrodes for use in an arc welding process (see Group XXII) have the following compositions 0.1 per cent C, 1.3 per cent Mn, 0.25 per cent Si, 0.03 per cent S, 0.03 per cent P, 0.02 per cent Al, balance Fe, and 0.3 per cent C, 0.8 per cent Mn, 0.3 per cent Si, 0.01 per cent S, 0.01 per cent P, 0.95 per cent Cr, 0.2 per cent V, balance Fe.
Patent GB-145345-A (GB)
Title: Improved means for balancing the reciprocating parts of internal combustion engines
IPC: F16F15/26
Filed: 1919-11-22
Abstract: 145,345. Weller, J. Nov. 22, 1919. Driving-gear.-Balancing is effected by weights mounted upon a pair of oppositely-rotating shafts E, M, driven at twice the speed of the crank-shaft. Weights are mounted upon both ends of each shaft E, M, from which are driven a magneto, a dynamo, and a water-circulating pump, the rotor of which may itself carry the weights secured to the shaft driving the pump. The shafts may be driven through a pinion C, which gears with a wheel D on the shaft E, or a wheel K on the crank-shaft may gear directly with a wheel L on the shaft M. Specifications 26038/11 and 26777/11 are referred to.
Patent GB-1210533-A (GB)
Title: Free piston machine
Inventor: BRAUN ANTON
IPC: F01B11/00
Filed: 1967-10-06
Abstract: 1,210,533. Free piston machines. A. BRAUN. Oct.6, 1967 [Oct.6, 1966; Feb. 28, 1967; Sept.12, 1967], No.29145/70. Divided out of 1,210,532. Headings F1B and F1Q. A piston machine has first and second reciprocably movable assemblies and a synchronizer 24 causing the assemblies to move synchronously in opposite directions. The synchronizer has two inner toothed parts 82, 83 attached to one assembly and whose teeth project radially outwardly in opposite directions and engage respective teeth of a pair of rotatable intermediate toothed members 84, 85 the synchronizer also having two corresponding outer toothed parts 96, 97 attached to the other assembly and whose teeth project radially inwardly towards each other and engage respective teeth of the intermediate toothed members and at least one rigid member 93 connecting the outer toothed parts to each other and holding them fixed in position with respect to each other and to the rigid member itself so that the forces perpendicular to the direction of reciprocation due to the interengaging of the teeth are balanced within the rigid member. The invention is applicable to free piston compressors and gasifiers. Other embodiments of the invention are described.
Patent GB-202603-A (GB)
Title: Improvements in apparatus for conditioning air
IPC: F26B21/08
Filed: 1922-10-26
Abstract: 202,603. Moyer, P. S. Aug. 18, 1922, [Convention date]. Drying and like agents, specially designed for. -A device for conditioning air, for example in containers for food products, such as show-cases, comprises a vessel containing a cooling medium, and a casing containing a drying medium connected with the cooling-vessel so as to form an air duct between the vessel and the casing, communicating with the interior of the dehydrating casing. The cooling-vessel 5 shown is partly surrounded by insulating air spaces, while its top 10 and wall 9 are formed of thin metal by which the cooling effect of the contained ice &c. is transmitted. The dehydrating casing 11 contains cakes of hydroscopic material in perforated travs 27 which are removably supported within the casing with air space around them. The air circulation through the casing is controlled by apertures 23, in the walls provided with shutters 24 regulating them. The casing is secured to extensions on the walls of the cooling-vessel by dowelpins 12 and catches 14, 15, anv side of the casing being set next the vessel. All the sides of the casing may be enclosed, one of them being formed with a door.
Patent GB-982915-A (GB)
Title: Polyamic acid compositions
IPC: C08G73/10
Filed: 1963-07-24
Abstract: A polyamic acid solution comprises a solution of a polyamic acid on a volatile organic solvent therefor, and contains, for each 100 grams of the polyamic acid, from 0.004 to 0.025 gram of formic acid and/or monochloroacetic acid, or from 0.001 to 0.007 gram mole of benzaldehyde or p-aminophenol, or from 0.0003 to 0.003 gram mole of p-nitrobenzaldehyde.  A polyamic acid is defined as a polymer having an inherent viscosity of at least 0.1 measured as a 0.5% by weight solution in N:N-dimethylacetamide, the polymer having a recurring group of the formula <FORM:0982915/C3/1> where <FORM:0982915/C3/2> is a tetravalent organic radical containing at least two carbon atoms originating from at least one tetracarboxylic acid dianhydride of the formula <FORM:0982915/C3/3> no more than two carbonyl groups of each polyamide-acid unit being joined to any one carbon atom of the <FORM:0982915/C3/4> radical, -R1- is a divalent radical containing at least two carbon atoms originating from at least one organic diamine having the structural formula H2N-R1-NH2, in which the two amino groups each being attached to separate carbon atoms of -R1- and --> denotes isomerism. Many reactants suitable for preparing the polymers are specified.  The volatile organic solvents are substantially inert organic liquids which can be used in the preparation of the polymers, are not either of the polymer-forming reactants or homologues thereof, which act as solvent for at least one of the reactants and the polymer and which contain one or more functional groups other than p- or s-amino groups or di-functional dicarboxy-anhydride groups. Specified solvents are the N:N-dialkylcarboxylamides, N-methyl caprolactam, N-methyl-2-pyrrolidone, N - acetyl - 2 - pyrrolidone, dimethyl sulphoxide, tetramethylene urea, pyridine, dimethyl sulphone, tetramethylene sulphone, formamide, N-methyl formamide and hexamethyl phosphoramide alone or in admixture with dioxane, butyrolactone, benzonitrile, benzene, toluene, xylene or cyclohexane.  The polyamic acid solutions or heating forms insoluble polyimides.  Examples are given.  Specifications 898,651, 903,271, 903,272, 928,717, 980,274 and 982,914 are referred to.ALSO:In the examples: (L) glass and metal panels are coated with solutions in formic acid, dimethyl acetamide and N-methyl-2-pyrrolidone of polyamide-acids derived from: (I) 4:41-di-aminodiphenyl ether and pyromellitic dianhydride; (II) 4:41-oxydianiline and benzophenone tetracarboxylic acid dianhydride, and (III) m-phenylene diamine and pyromellitic dianhydride; the polyamide-acids being converted to the corresponding polyimides by heating, and (M) a solution as in (L) of polyamide (I) is applied by dipping as a plurality of coatings to copper wire, heating being effected after each coating is applied. The coatings may also be applied to wood, plastics, aluminium, brass and steel.
Patent GB-601284-A (GB)
Title: Improvements in condensation pumps
IPC: F04F9/00
Filed: 1945-11-05
Abstract: 601,284. High-vacuum ejector apparatus. DISTILLATION PRODUCTS, Inc. Nov. 3. 1945, No. 29315. Convention date, Nov. 4, 1944. [Class 71.] A multi-stage condensation pump for obtaining a vacuum comprises a casing 10 on which are mounted conduits 34, 36 approximately perpendicular to the top of the casing. An inner casing 18 carries two pipes 42, 46 and is divided by a partition 54 into two boilers 58, 60, connected to the pipes 46, 42 respectively. The pipe 42 is fitted with a cowling 44 to provide an umbrella jet to draw gases down the conduit 34 and cooling coils 48 surround the conduit. The pipe 46 forms a non-flared low-pressure diffuser type nozzle and ejects gases through the conduit 36 which is provided cooling coils 50. A casing 20 surrounds the boilers and with the aid of a baffle 52 directs the condensed working fluid to the annular space surrounding the casing 20 where it passes through openings 70, 68 into the boiler 58 which is fitted with baffles 62 and the more volatile constituents are vaporised and the remainder flow through opening 56 to the boiler 60 that is fitted with baffles 64. Baffles 38, 40 are fitted to collect condensed working fluid.
Patent GB-1391665-A (GB)
Title: Catalyst systems for the production of cubic boron nitride
IPC: C04B35/5831
Filed: 1972-06-22
Abstract: 1391665 Cubic boron nitride GENERAL ELECTRIC CO 22 June 1972 [1 July 1971] 29363/72 Heading C1A Hexagonal boron nitride is converted into cubic boron nitride in the presence of at least one alloy of aluminium with cobalt, nickel or manganese. The temperature and pressure conditions and the apparatus are conventional for the conversion. The alloy may be pre-formed or prepared in situ, and it may be used in sheet form or particulate form, in this ease mixed with the hexagonal boron nitride. A finely divided hard crystalline material such as tungsten carbide, cubic boron nitride, aluminium oxide or silicon nitride may be mixed with the boron nitride charge. Tool inserts may be prepared by the process of the invention.
Patent GB-1109049-A (GB)
Title: A drive for a reaper for attachment to a tractor
IPC: A01D34/30
Filed: 1966-06-30
Abstract: 1,109,049. Driving external machines. J. JANUSCHKOWETZ. 30 June, 1966 [30 June, 1965], No. 29384/66. Heading B7H. A reaper 12 mounted on and carried by a tractor 4 consists of a reaper knife mounted on a cutter bar and reciprocable by a rod 11 driven by a shaft-driven crank or eccentric 10, the crank or eccentric 10 and the cutter bar being supported on a pivotable frame 1 mounted on the same side of the tractor as the reaper and the driving connection between a drive-shaft 13 of the tractor and the crank or eccentric comprises a V-belt pulley 16 displaceably mounted, independently of the frame 1, on the tractor and an articulated shaft 17 coupled to the pulley 16, the shaft 17, frame 1 and cutter bar forming a unit separable from the tractor. The V-belt pulley 16 is mounted on a lever 22 which is displaceable by means of a manually-controlled bell-crank 24 to disengage the reaper drive and a guide 26 and retainer 28 are provided for the V-belt 14 when the belt drive is disengaged.
Patent GB-866583-A (GB)
Title: Improvements in or relating to curtain supporting means
Inventor: ADAMS WILLIAM JOHN
IPC: A47H1/06
Filed: 1958-09-15
Abstract: 866,583. Suspending curtains. INSULARBO Ltd. Sept. 14, 1959 [Sept. 15, 1958], No. 29461/58. Class 52(5). Curtain-supporting means comprises a main member 1 including a horizontal board formed with two parallel slotted channels 3, 4 for the reception of runner elements 12 not shown, and end members 5, 6 hingedly, detachably or permanently fixed to the ends of the main member 1, one end member 5 having a single rearwardly curved slotted channel 5b leading from one of the channels 3 in the main member, and the other main member having a single rearwardly curved slotted channel 6b leading from the other slotted channel 4 in the main member. Anchorage means for the ends of the curtains are formed by sharply curved reversed portions 5c, 6c at the ends of the channels 5b, 6b respectively. When the end members 5, 6 cannot be moved, the runner elements 12 are inserted or removed through holes 7, 8 formed in the channels 3, 4. Stops 9 are provided in case the anchorage means 5c, 6c become inoperative. A third parallel slotted channel 10 is provided in the main member 1 for the suspension of net curtains. Specifications 733,310 and 866,584 are referred to.
Patent GB-1487822-A (GB)
Title: Cable joinder assembly
IPC: H02G15/192
Filed: 1976-07-15
Abstract: 1487822 Cable joint cover WALTER ROSE KG 15 July 1976 [24 Sept 1975 12 June 1976] 29489/76 Heading H2E A cable joint cover comprises a metallic sleeve 1, a pair of plastics sleeve heads 5, 7 connected to respective ends of the sleeve, each sleeve head comprising a heat shrinkable cable inlet 6, 8 and a non-heat shrinkable connecting portion 11, 12. A heat-shrinkable plastics sheath 13 is provided over the sleeve and sleeve heads, and is optionally secured to the connecting portions 11, 12 by an adhesive 15. Metallic support rings 4, interlock with the sleeve 1 (Fig. 2). Optionally, the insides of the cable inlets 6, 8 have a layer of adhesive 14. The adhesive preferably liquifies at the shrinking temperature of inlets 6, 8. A valve 9 may be provided in the non heat-shrinkable part of the sleeve head for gas pressure-monitored cables. In another embodiment (Fig. 3, not shown) the cable inlet (6a) has an inwardly directed tubular extension (16) which bears tightly against the cable together with a clamp (17) around the extension. The sleeve heads and the ends of the cables to be joined are prepared by roughening with emery paper and rubbing off with methylene chloride prior to shrinking on the sheath 13 or cable inlets respectively. The sleeve 1 may be formed from two or more parts.
Patent GB-364567-A (GB)
Title: Improved system and apparatus for concentrating or thickening liquids such as pulps and ore slimes
IPC: B01D21/00
Filed: 1930-10-02
Abstract: 364,567. Separating pulp and slimes by gravity. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.- (Merco Centrifugal Separator Co., Ltd. ; 343, Sansome Street, San Francisco, U.S.A.) Oct. 2, 1930, No. 29528. [Class 46.] Apparatus for thickening or grading pulp and ore slimes according to specific gravity and viscosity comprises a tank 11 balanced by a weight 21 and containing an overflow pipe 13, 14 delivering to a receiver R having a partition 30. Pulp is delivered by a conduit 12 and rises in the tank and overflow. Heavy pulp passes to the compartment 26 ; if the specific gravity decreases the tank rises and the discharge passes to the compartment 27. A body 31 may be placed as shown to diminish the effective area of the top of the tank. Changes of distribution due to changes in viscosity may be eliminated by providing an additional overflow 32, Fig. 2, or by replacing the pipe 14 by a septum, abolishing the pipe 13, and enlarging the pipe 32. The apparatus may be incorporated in pulp-thickening plant, Fig. 3. It is adjusted so that too light pulp passes to compartment 27 and is returned to the vat 33 while that passed to compartment 26 is discharged by pipe 38. A centrifugal separator may be used in place of the vat 33.
Patent GB-408034-A (GB)
Title: Improvements in filter mediums
IPC: B01D39/18
Filed: 1932-10-22
Abstract: A filter pad, particularly for filtering milk, consists of compressed cotton wool without adhesive or backing.  The cotton wool may be compressed in sheet form or after being cut up into pads.  The cotton wool may be subjected simultaneously to heat and pressure and may have a pattern embossed upon it, e.g. by passing between heated embossing rollers.
Patent GB-1036749-A (GB)
Title: Improvements in or relating to waveguide couplings
Inventor: BERRY JOHN ALFRED
IPC: H01P5/08
Filed: 1963-07-25
Abstract: 1,036,749. Waveguides. MARCONI CO. Ltd. July 9, 1964 [July 25, 1963], No. 29590/63. Heading H1W. The waveguide transition of Specification 805,510, for transforming the TE 01  rectangular mode to the TE 01  circular mode, improved in that it is dimensioned in such a manner that the guided wavelength is constant over the length of the transition within the transmission frequency band. The known transition comprises a first section a in which a rectangular input end 5 is transformed by a double taper to a rectangular output end lying at right angles to the input end and having a major dimension twice that of the input end. This is followed by a section b transforming between a rectangular input end and a symmetrical cruciform output end and by a section c in which the cruciform section is transformed to a circular section. The first section may be improved by spacing the start of one of the tapers from the end of the section, e.g. at the position 6, whereby it extends over three-quarters the length of the section. Both tapers may be modified in this way and the tapers may be curved, e.g. according to a cos<SP>2</SP> curve. The first section is preferably three wavelengths long. A further method of improving the first section consists in so dimensioning the L-shaped symmetrical halves of the transition that they have a constant cut-off frequency at any section preferably equal to the cut-off frequency of the initial section 5. The dimensions of the cruciform section are such that the width d (minor dimension) of the arms is smaller than the value given by the equation # h =d.2#2, where # h  is the free-space wavelength corresponding to the highest operating frequency. Preferably, the diameter of the circular output end of the third section is made greater than the longer side of the output end of the first section and this increase of dimension may be achieved either by a progressive increase extending over the whole transition or over only the third section.
Patent GB-1088444-A (GB)
Title: Means for controlling an electric motor
Inventor: GURWICZ DAVID
IPC: H02P29/00
Filed: 1965-07-13
Abstract: 1,088,444. Control of D.C. motors. SEVCON ENGINEERING Ltd. Aug. 5, 1966 [July 13, 1965], No. 29595/65. Heading H2J. [Also in Division G3] A series or compound motor M driving, e.g. an hydraulic pump in a fork-lift truck, is energized from a battery in pulses, the mark/ space ratio of which is controlled by an evaluation of load current so as to produce substantially constant torque at variable speed. A thyristor SCR1 is triggered on for constant time periods by a transistor relaxation oscillator circuit; the interval between pulses is determined by the charging of a capacitor Cl by a Zener voltage ZX1 and is increased when a transistor Tr2 is conducting, due to current through a freewheeling diode D8 shunting the motor. Thus, when the motor is pumping to move a ram its speed is high and the current through the diode decays rapidly, causing frequent pulses, but when the pump is merely maintaining a static pressure motor speed is low and the pulses are greatly spaced apart. It is mentioned that the load signal may alternatively be derived from an oil pressure transducer.