baber/WOPTO huggingface dataset:
Patent GB-1147587-A (GB)
Title: Laser
IPC: H01S3/101
Filed: 1968-03-12
Abstract: 1,147,587. Lasers. INTERNATIONAL BUSINESS MACHINES CORP. 12 March, 1968 [13 April, 1967], No. 11874/68. Heading H1C. A laser beam is emitted in a required direction by transmitting an ultrasonic beam transverse to the plurality of resonant paths in a degenerate optical resonator, the ultrasonic beam causing that resonant path which is diffracted at the Bragg angle to become effective. Scanning is effected by changing the frequency of the ultrasonic beam so that a different resonant path is diffracted at the Bragg angle. The ultrasonic beam may be propagated through the active medium 6, Fig. 1, which may be ruby, neodymium-doped yttrium aluminium garnet or suitably doped LiNbO 3 , or the beam may be transmitted through an ultrasonic medium 26, Fig. 2, separate from a ruby or a gaseous active medium 25. The degenerate resonator is formed in Fig. 1 by spherical mirrors 2, 4, and the active medium 6 is provided with curved surfaces 16, 18 which assist in focusing laser light in the resonator on to the spherical mirrors. The ultrasonic beam is produced in the active medium by applying a signal from a high frequency oscillator 10 to a zinc oxide or cadmium sulphide transducer element 8 cemented or vapour deposited on the active medium, the transmitted ultrasonic beam being absorbed on the other side of the active medium by an absorber 12 such as glass. A transducer element is unnecessary if the active medium has piezo-electric properties, e.g. a suitably doped LiNbO 3  crystal. In Fig. 2 the resonator is formed by a spherical mirror 2 incorporating an operative stop 32 and a plane mirror 24, the arrangement in association with a lens 30 providing separate paths for each direction of light diffracted in the separate fused quartz or water ultrasonic medium 26, the arrangement neutralizing a shift in the laser light frequency which would otherwise be obtained. Two dimensional scanning may be obtained by using two orthogonal ultrasonic media.
Patent GB-280801-A (GB)
Title: Improvements in or relating to moulds or moulding boxes
IPC: B28B7/02
Filed: 1927-05-04
Abstract: 280,801. Leyland, A. May 4, 1927. Hasp fastenings.-The sides of two-part mould. ing boxes are connected by a hasp e<1>, Fig. 2, which is pivoted to an extension c<1> of the side b, and is locked to an apertured lug d on the sidea by a wedge f and is thereby pressed against a projection d<2> on the side a to make a tight joint.
Patent GB-1097062-A (GB)
Title: Process for the production of articles from thermoplastic plastics material reinforced with glass fibre and synthetic resin
IPC: B29C70/44
Filed: 1965-03-19
Abstract: 1,097,062. Laminates. DYNAMIT NOBEL A.G. March 19, 1965 [March 21, 1964], No. 11908/65. Heading B5N. Articles formed from thermoplastic material reinforced with glass fibres are made by enclosing a layer of glass fibres between, and hotpressing it to two layers of thermoplastic material such as P.V.C., impregnating the fibres with a hardenable synthetic resin such as a polyester and curing. The thermoplastic layers may be formed into the shape of the article, e.g. by deep drawing, before or after assembly with the fibre layer, and may be clamped or welded together around their edges. The synthetic resin may be introduced between the layers, via tubes through the closed edges, by a pressure or vacuum pump or by both acting together. In deep drawing a bath, the thermoplastic surface of which is for example acid resisting, the sealed edges may be shaped to form the lip of the bath.
Patent GB-493384-A (GB)
Title: Improvements relating to automatic weighing scales
IPC: G01G13/00
Filed: 1937-04-28
Abstract: 493,384. Automatic - feed weighers. HENNEFER MASCHINENFABRIK C. REUTHER & REISERT. April 28, 1937, No. 12091. Convention date, June 20, 1936. [Class 143] In an automatic weighing-scale.for grain, or powdered material, the weigh hopper b whilst filling is locked in a raised position close to the supply hopper c by a pivoted catch d which is controlled together with a feed gate retaining lever i by means of a pivoted flap h subject to the pressure of the material in the supply hopper. When the feed gate k is opened (in known manner), the material fills the weigh hopper b and piles up in the supply hopper c until its pressure pushes back the flap hand raises the lever i, allowing the feed gate to close. In closing, the feed gate displaces the catch d from beneath a projection e on the weigh hopper. The weigh hopper descends and actuates an auxiliary balance m, the main portion of the load being balanced by the weights in the weights pan. The weight is registered by known counters. When the weigh hopper has discharged, the feed gate is re-opened in known manner and the parts return to the positions shown.
Patent GB-105191-A (GB)
Title: Improvements in the Construction of Wooden Batch Rollers employed in Textile and other Machines.
Inventor: SMITH HERBERT STUART
IPC: B65H75/10
Filed: 1916-08-28
Abstract: 105,191. Smith, H. S. Aug. 28, 1916. Rollers.-Wooden batch rollers of the sectional type, for winding fabrics, paper, &c., are constructed in two or four sections dovetailed together parallel to the axis, as shown in Figs. 2 and 3. The two sections a, b, Fig. 2, have the dovetail joint a<1>, b<1>, and the four sections a, b, Fig. 3, have four dovetail joints a<1>, b<1>, formed as shown. The joints are preferably glued, and pieces of corrugated steel c, Fig. 2, may be driven into the ends for additional security.
Patent GB-642934-A (GB)
Title: Improvements relating to acrobatic or tumbler toys
IPC: A63H11/04
Filed: 1948-05-03
Abstract: 642,934. Mechanical toys. MOORE, A. G. May 3, 1948, No. 12134. [Class 132 (iii)] A tumbler toy of the kind comprising a ladder and a tumbler, has the tumbler 10 in the form of a pendulum portion 11, in which the centre of gravity of the tumbler is located, and a recess at each side of the pendulum portion in which the ladder rungs pivotally engage. The ladder, which is secured to a base 17, may have one or two sides 15. Alternatively, the rungs may be of varying lengths and emit musical notes when struck by the tumbler. In a further embodiment the rungs carry bells. Electric contacts may be mounted on the rungs which complete an electric circuit when the tumbler strikes them, which thereby intermittently energizes electric lamps or bells. A propelling device, Fig. 6, may be incorporated, including a spring 40 and a trigger 42, so that the tumbler may be projected towards the top of the ladder. Specification 641,504 is referred to.
Patent GB-279335-A (GB)
Title: Improvements in or relating to key fasteners
IPC: E05B13/04
Filed: 1927-05-06
Abstract: 279,335. Stubbs, W. A. May 6, 1927. Keyholes, obstructing.-A key 35 is retained in the lock and prevented from being turned from the opposite side by a U-shaped clamp 10 gripping the key and having extensible limbs 21 to engage the handle 22. A separate member 26 passes through the keyholes 34 in the lock casing and prevents access to the key stem. The U- shaped member 10 has grooves 13, which may be corrugated or roughened, to grip the key stem when the screw 16, engaging a tapped hole in the block 14 and pressing on a perforated block 15 by a collar 17, is tightened. Interengaging extensions 21 slide on the limbs 12 of the clamp, and are adjusted to grip the handle to prevent the key and clamp being turned as a whole. A member 26, with a bent-up part 29 carrying a recess 31 or cap 38 for the end of the key stem, is inserted through the keyholes 34 of the lock casing and presents access to the end of the key stem or the entrv of skeleton keys. The other end of the member 26 passes between the limbs of the clamp, and is secured when the screw is tightened. The device may be anchored to the door by a ring 40 and chain 42, to suspend below the lock when not in use.
Patent GB-1044236-A (GB)
Title: Improvements in or relating to the production of gels
IPC: C08L29/04
Filed: 1965-03-23
Abstract: A process for gelling an aqueous polyvinyl alcohol solution comprises reacting therein (1) a first compound which does not cross-link the polyvinyl alcohol by which is convertible into a second compound which supplies ions which do cross-link the polyvinyl alcohol; and (2) a reagent which accomplishes the conversion in situ to obtain the ions which cross-link the polyvinyl alcohol.  Suitable ions to effect crosslinking are Cr 3 +, Ti 4 + and V less than 5 +, which ions may be provided by reduction of hexavalent chromium or pentavalent vanadium compounds, oxidation of trivalent titanium compounds, or release of the ions from complexes.  Sodium and potassium chromates and dichromates may be reduced with sodium bisulphite, sulphide, hyposulphite or hydrosulphite or ethanethiolic acid, optionally in the presence of copper ions which may be provided by cupric sulphate, chloride, acetate or nitrate; sodium, potassium and ammonium vanadates may be reduced with sodium sulphite, sodium hydrosulphite, hydroxylamine hydrochloride or hydrazine; titanium trihalides and titanous sulphate may be oxidized with oxygen, nitric acid, alkali metal nitrates, acetoxime, sodium sulphite, sodium bisulphite or sodium thiosulphate; and titanium 4 + ions may be released from complexes, e.g. potassium titanium oxalate, with ammonia, amines, basic salts and buffers such as carbonic acid/bicarbonate buffers. Gelled foams may be prepared by foaming the polyvinyl alcohol solution.  In examples aqueous polyvinyl alcohol solutions are gelled with (1) sodium chromate and sodium bisulphite in the presence of copper sulphate; (2) sodium dichromate and sodium sulphide; titanium trichloride and (3) potassium nitrate and optionally sodium molybdate, and (4) sodium thiosulphate; ammonium vanadate and (5) sodium sulphide, (6) sodium hydrosulphide and (7) hydroxylamine hydrochloride and copper sulphate; and potassium titanium oxalate and (8) sodium bicarbonate together with (9) sodium oxalate and (10) sodium oxalate, boric acid and glycerol.  A gelled foam is prepared by blowing the solution of Example 10 with air.
Patent GB-1491851-A (GB)
Title: Process for recovering copper and zinc from hydrothermal ore sludges
IPC: C01G3/00
Filed: 1976-03-26
Abstract: 1491851 Copper and zinc recovery FRIED KRUPP GmbH 26 March 1976 [27 March 1975] 12366/76 Heading ClA [Also in Division C7] Cu and Zn are recovered from concentrates of hydrothermal ore sludges by (a) treating a suspension consisting of a mixture of undried ore sludge concentrate having a solids content of 100 to 250 g/l and spent electrolyte from Zn electrode position, the suspension having 20 to 60 g free H 2 SO 4 /100 g. solids, in an autoclave at 80 to 120 C. under superatmospheric pressure in an atmosphere containing oxygen for ¢ to 3 hours, (b) subject the resulting suspension after cooling to multi-stage counterflow decantation in a wash concentrator preferably using vapour condensate produced by evaporation of Cu-free refined product (see below) to separate leach liquor and residue, (c) adding a reagent precipitating Cl ions, e.g. Cu 2 O and a gaseous reducing agent such as SO2, and separating the resulting precipitate, (d) extracting Cu from the resulting solution poor in Cl ions by a liquid ion exchanger (e.g. oximes or derivatives of 8-hydroxy quinoline) and after reextraction separating Cu by electrodeposition, (e) subjecting the Cu-free refined product to multistage evaporation and separating Zn by electrodeposition from the resulting concentrated solution after adding milk of lime, and (f) using the spent electrolyte containing H 2 SO 4  from the Zn electrodeposition to form the suspension in (a). Initially the undried ore sludge concentrate may be washed to a Cl content of less than 5 g/l; and a reagent precipitating Fe ions, e.g. Na 2 SO 4  may be added to the suspension.
Patent GB-769638-A (GB)
Title: Brassiere
IPC: A41C3/00
Filed: 1955-04-29
Abstract: 769,638. Brassieres. EVEN-PUL FOUNDATIONS, Inc. April 29, 1955 [Oct. 5, 1954], No. 12412/55. Class 141. A brassiere comprises central panels 15, preferably elastic, which at their lower parts are secured together in overlapping relation and are attached to the inner edges 17, 19 of bottom panels 14, and at their upper parts are secured to the inner edges 16 of breast cups 13. Elastic side panels 23 are attached to the outer edges of the cups 13 and to side sections 12 of the brassiere. The central panels 15 may be further secured together at points 22.
Patent GB-867612-A (GB)
Title: Improvements in or relating to electronic pulse-counting apparatus
IPC: G01R23/09
Filed: 1958-04-19
Abstract: 867,612. Frequency detectors. COLE Ltd., E. K., and SAUNDERS, P. W. April 20, 1959 [April 19, 1958], No. 12465/58. Class 40(5) In an electronic ratemeter for radioactivity measurement a Miller integrator valve circuit V 3  is connected as shown to the output of the pulse integrating circuit C 3 , R 3 . Different switched values of C 4  produce different rate ranges on the valve voltmeter M. Moreover the circuit ensures that nCR 3 , where n is the charging rate, and C the effective value of C 3 , is approximately maintained constant over each range (due to a decreasing stage gain of the valve as its input increases) thereby equalizing the mean probable error (proportional to 1/#nCR 3 ), over the range. The capacitor C 3  may be of low value and used by itself for high counting rates, the Miller circuit being then disconnected. C 3 , R 3  may form part of a diode pump circuit.
Patent GB-166392-A (GB)
Title: Improvements in folding chairs
IPC: A47C4/32
Filed: 1920-05-05
Abstract: 166,392. Drake, F I. May 5, 1920. Bedsteads convertible into seats.- A folding chair convertible into a camp bed comprises front and rear frames a, d pivoted at i, j to the opposite ends of a pair of side members g. The arms or members k pivoted at l, l to the side members g are adapted for engagement with the front frame a. The rod n, carried by links m, m pivotally connected to the side members g, engages a groove f<1> on the crossbar f of the rear frame d when the framework is erected as a chair, Fig. 2, or with notches o in the rear frame when erected as a camp bed, Fig. 1.
Patent GB-1223145-A (GB)
Title: A parking plant
IPC: G08G1/14
Filed: 1968-03-14
Abstract: 1,223,145. Parking installations. FORSVARETS FABRIKSVERK. 14 March, 1968 [17 March, 1967], No. 12537/68. Heading G4T. A car park having an entrance and exit includes a ticket issuing machine at the entrance for dispensing tickets and permitting entry into the car park, a ticket checking apparatus at the exit for calculating the parking fee due, and a clock-driven counter operatively associated with the ticket issuing machine and ticket checking apparatus. The clock 54 applies subtract pulses to counters 11, 18 at predetermined time intervals. The ticket issuing machine 9 is operated when a car is detected by a mechanical, inductive or capacitive contact 10, to punch a ticket with the number shown on counter 11. Removal of the ticket from the machine 10 closes contacts to raise barrier 15 and admit a car. On leaving the installation, the ticket is placed in checking apparatus 19 which subtracts the number currently showing on counter 18 from the number recorded on the ticket and calculates the amount due. Insertion of the required value of coins in the apparatus 19 raises the barrier 28 or issues a ticket controlling the barrier if used in a predetermined period of time. Photo-electric detectors 4, 5 operate a signal 17 if the vehicle is too high. A counter 7 coupled to the barrier maintains a count of the number of vehicles in the installation and operates the signal 17 when the installation is full. The barriers may be controlled by a subscription card inserted in the checking devices 8 and 19. In a modification, a single counter is used and the checking apparatus replaced by a cash register operated by an attendant. As shown in Fig. 4, the information is recorded four times on the ticket so that the ticket may be orientated in the checking apparatus in any fashion. The clock mechanism (54) steps a shaft (51) carrying five cams (46-50) at fixed intervals, Fig. 3 (not shown). The cams have different profiles and close-associated switches (31-34, 45) at different predetermined time intervals. The switches are selectively placed in circuit with the counters (11), (18) under the control of a stepping mechanism (42) controlled by the clock mechanism to vary the rate of stepping the counters according to the time of day. Several stepping mechanisms are provided, one being selected by a manual switch, whereby the rate of stepping the counters may be varied according to the day of the week. In addition, the checking apparatus may be controlled by a stepping mechanism to vary the rate of charging.
Patent GB-971916-A (GB)
Title: Mouldable oxymethylene polymers
Inventor: KRAY RAYMOND JOSEPH
IPC: C08G2/00
Filed: 1961-06-09
Abstract: A mouldable oxymethylene polymer is prepared by copolymerising trioxane, a cyclic ether having at least two adjacent carbon atoms and a glycidyl ether (as in Specification 971,915) the polymer chain comprising 80 to 99% oxymethylene groups, 19.5 to 0.5% oxymethylene groups and 19.5 to 0.5% other oxyalkylene groups. The remaining details are as in Specification 971,915.
Patent GB-911154-A (GB)
Title: Improvements relating to equipment mounting racks
Inventor: WALSH NORMAN ALLEN
IPC: F16B21/02
Filed: 1960-04-08
Abstract: 911,154. Stud and socket fastenings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 10, 1961 [April 8, 1960], No. 12649/60. Class 44. A stud and socket fastening for mounting a chassis upon an equipment rack comprises a stud 2 connected to a mounting thread 4 by an eccentric waist 9, and a keyhole socket 13 having at the side furthest from the stud a recess 17 into which the stud is pressed by a spring 16 when the connection is fully made. Two such fastenings support the chassis.
Patent GB-144262-A (GB)
Title: An improved gaiter or patch for repairing pneumatic tyres
IPC: B29C73/00
Filed: 1920-05-07
Abstract: 144,262. Steell, E. M. Oct. 30, 1918, [Convention date]. Punctures, apparatus for closing.-A gaiter or patch for repairing or reinforcing a damaged place in a tyre cover 1 consists of a perforated metal plate 7 covered on both sides with fabric 5, 6, the plate being fitted (or formed) with spikes 8 to enter the body of the tyre on inflation.
Patent GB-999431-A (GB)
Title: Improvements in or relating to transistors
Inventor: LOEB HANS WALTER
IPC: C30B31/06
Filed: 1961-04-10
Abstract: 999,431. Transistors. ASSOCIATED SEMI-CONDUCTOR MANUFACTURERS Ltd. March 30, 1962 [April 10, 1961], No. 12823/61. Heading H1K. A transistor comprises a wafer of e.g. P-type germanium, semi-conductor material into which is diffused an impurity, e.g. arsenic to form a base collector junction. The diffusion is carried out in two stages to form two zones of base material, D2 Fig. 1 of relatively low impurity content and D1 of relatively high impurity content, alternatively the highly doped region may be formed by epitaxial deposition from the liquid or vapour phase. A base connection BS is made to the highly doped region by alloying in an evaporated film of e.g. gold doped with antimony and an emitter ES is provided by alloying an evaporated film of, e.g. aluminium, through the highly doped region into the region D2. The two zones D1 and D2 may be formed by heating the wafer to a temperature of 700 C. in the presence of a body of arsenic at say 50 to 100 C. for about an hour, then raising the temperature of the arsenic body to about 300 C. for 5 to 10 mins., thus forming two diffusion zones, D1 having depth of about 0À1 microns and impurity concentration of 10<SP>16</SP> to 10<SP>19</SP> atoms/cc. and D2 a depth of 0À9 microns and impurity concentration of 10<SP>15</SP> to 10<SP>16</SP> atoms/cc. D1 may alternatively be produced by epitaxial deposition from the vapour phase. Material may be removed from the vicinity of the emitter to form a Mesa type transistor.
Patent GB-1435352-A (GB)
Title: Pipeline sealing devices
IPC: F16K7/10
Filed: 1973-03-16
Abstract: 1435352 Pipe sealing device G W TEMPERTON 28 Feb 1974 [16 March 1973] 12877/73 Heading F2P A pipe sealing device comprising an inflatable member having a neck through which it can be inflated and a protective cover which either (a) has an aperture in it, or (b) is made of a loosely woven material, through which gaseous medium can be exhausted. Referring to Fig. 1, the aperture may be in that end of the inflatable member remote from the neck 7 and may have a grid to exclude dust or may comprise a one-way valve or a flap. The inflated device may comprise a sphere or a cylinder with part-spherical ends. An elongate member 8 may extend across the inflatable member from the neck. This member may be an open-ended tube with or without perforations, or a solid rod with longitudinal grooves, or a coil spring. This member forms a passage for exhausting gaseous medium from parts of the inflatable member remote from the neck 7. The protective cover 2 may be made of leather, cotton, nylon.
Patent GB-550885-A (GB)
Title: A new or improved cover for silos
IPC: A01F25/13
Filed: 1941-10-07
Abstract: 550,885. Silos tents. PIGGOTT, C. H. Oct. 7, 1941, No. 1296. [Class 20 (i)] To enable ensilage to be: removed through the top of. a silo while still affording protection against the weather, a flexible tent-like cover is provided with door flaps and a depending skirt portion adapted to surround and embrace the upper portion of. the silo. The cover may be supported by an adjustable pole 11 provided with a foot 12 to rest on the ensilage, or by a pole .fixed to one side of the silo, or between two poles fixed on opposite sides ; the poles may extend downwardly to the floor. The cover 10 is provided with an opening adapted to be. closed by flaps 19 which can be laced together and made waterproof by a sealing flap 21 which covers the joint, and a split skirt portion 16 provided with eyelets to receive a reeving line 18 which binds it to the top of the silo.
Patent GB-470126-A (GB)
Title: Improvements relating to automatic packing or weighing machines
IPC: B65B1/40
Filed: 1936-05-08
Abstract: 470,126. Delivering material from hoppers. SMITH, A. R. May 8, 1936, No. 13012. [Class 78 (i)] For delivering definite quantities of powdered, granular, and like materials from a shoot or hopper having mechanically-actuated discharging means, a controlling clutch is used to stop the actuation of the discharge mechanism at the completion of either a single revolution of the driving-shaft or a definite number of complete revolutions. In the form shown the worm e in the delivery spout of the hopper is driven by bevel gear k and a crank h from the shaft i, which carries a member m, Fig. 3, keyed thereto. Surrounding the latter is a toothed disc n geared to the belt-driven pulley l. On depression of the pedal x a stop z is withdrawn from the member v, thus allowing a spring w to rotate it clockwise and cause a corresponding rotation of a member s into a position in which it fouls the sleeve n and thus forms a driving-connection between n and the shaft i. When the pedal is released the member z again contacts the member v at the completion of the revolution of the apparatus then in progress and the member s is turned again into its inoperative position. The spring w may be replaced by a weight.
Patent GB-310544-A (GB)
Title: Improvements relating to centrifugal machines or separators
IPC: B04B7/02
Filed: 1929-04-26
Abstract: 310,544. Ramesohl & Schmidt Akt.- Ges. April 27, 1928, [Convention date]. Couplings, disconnectible. - The cover 2 of a centrifugal separator contains chambers 3, 4, 5, which receive liquids from the bowl and which' have outlet pipes 8, 9, 10, registering with adjustable pipe supports. The inlet pipe 7 similarly engages an adjustable support. The cover is arranged on a hinge 1, and the pipe supports are of the type shown in Fig. 1, where the support 12 operates under spring pressure to engage the extension 11 of the inlet pipe 7. The pipe supports are all movable axially in the holder 13. When the cover is raised on the hinge and breaks the pipe joints, the liquid runs from the chambers 3, 4, 5 into the drip trays 15.