baber/WOPTO huggingface dataset:
Patent GB-617776-A (GB)
Title: Method of concentrating solutions
IPC: B01D39/06
Filed: 1944-10-17
Abstract: Solutions of fruit juices, medicinal extracts &c. substantially free from alcohol are concentrated by distilling the juice under a high vacuum, freezing the liquid remaining after distillation substantially solid, gradually heating the frozen mass while maintaining the temperature below 32 DEG  F., removing the concentrated solutions and adding to them the condensate from the distillation.  Specifications 617,858, 617,859, and 617,860, [all in Group XIII], are referred to.ALSO:Solutions of fruit juices, medicinal extracts, &c substantially free from alcohol are concentrated by freezing the solution substantially solid and then gradually heating the frozen mass while maintaining the temperature below 32 DEG  F. so that concentrated solutions pass downwardly through the ice formations and are removed.  In the case of very dilute solutions sugar may be added to lower the freezing point.  The fruit juice may be distilled under a high vacuum before freezing and the condensate added to the concentrated liquid obtained by the freezing. Insoluble matter recovered from the ice may be added to the concentrated juice.  Specifications 617,858, 617,859 and 617,860 are referred to.
Patent GB-1465763-A (GB)
Title: Control apparatus for a grinding machine
IPC: G05B19/416
Filed: 1974-05-07
Abstract: 1465763 Automatic control of grinding BENDIX CORP 7 May 1974 [7 May 1973]  20082/74 Heading G3N In control apparatus for a grinding machine, in which the rapid traverse, rough grind and finish grind feeds of a grinding wheel towards and into a workpiece are controlled by comparing the content of a grind counter 34, which content is increased as the wheel moves towards the workpiece, with pre-set values set in comparators 42, 44, 48, means are provided to inhibit the counting up of counter 34, after a dressing operation, until the wheel has moved a distance, towards the workpiece, corresponding to the dressing depth, its contents thus corresponding to a given location of the wheel cutting zone, irrespective of wheel diameter. The dressing depth is pre-set in comparator 58, to be compared with the content of a dress counter 36 whose content is increased as the wheel moves towards a dress, crushing, roll or diamond dresser. When the required dressing depth is reached, comparator 58, after a delay provided by dwell 68, causes flip-flop 70 to set, inhibiting the grind counter 34, the dwell output also resetting the dress counter to zero. The inhibition remains as the wheel is fed away from the dress roll and  towards the workpiece until comparator 56, storing the negated dressing depth, provides a signal indicating that the wheel has moved a distance equal to the dressing depth whence the flipflop is reset removing the inhibition on counter 34. To avoid cumulative errors in the grind counter, least significant digits of the grind counter 34 may be latched into the negated dress depth comparator 56, so that the inhibition is removed only at a point corrected by any wheel overshoot which may have occurred. The comparators 42, 44, 46, 48, 50, 56, 58, 60, 62 provide control signals to feed control circuitry of the grinding machine and hence to a motor and feed screw for a wheel head. Indicator lights and wheel drive may also be controlled. Numbers representing the dress depth, and total, and rough grind changeover positions are pre-set by thumb wheels, changeover positions from rapid traverse being hardwired. The pulses for counters 34, 36 are provided by a Moire fringe transducer (24, 26), Fig. 1 (not shown) and a pulse amplifying, shaping and dividing circuit 32.
Patent GB-1109173-A (GB)
Title: Improvements in or relating to teaching machines
IPC: G09B3/02
Filed: 1964-05-15
Abstract: 1,109,173. Education appliances. E. J. ARNOLD & SON Ltd., and R. D. AUSTIN. 11 May, 1965 [15 May, 1964], No. 20253/64. Heading G5G. A question and answer device comprises a base 1 containing a spool 13 carrying a question and answer roll of paper and a coaxial spool 12 carrying a plain roll on which a student may write a considered answer, both rolls being moved over a transverse bridge 5 by a spool 7. A lid 3 has a window opening having portions 17A-17C in a mask 16 so positioned that a student views a first question at portion 17A. A considered answer is written on the plain roll through aperture 18. The rolls are then advanced so that the considered answer is beneath window 20 and may be compared with the first question and answer thereto positioned beneath portions 17B, 17C respectively. An appropriate mark may then be inserted in opening 19. Friction pads prevent return motion of the plain roll and of the spool 7. The window opening may be reduced in size by use of an appropriate mask.
Patent GB-1457354-A (GB)
Title: Coupling armoured flexible pipes
IPC: F16L33/00
Filed: 1974-05-08
Abstract: 1457354 Pipe couplings; nails; flexible pipes INSTITUT FRANCAIS DU PETROLE 8 May 1974 [14 May 1973] 20298/74 Headings F2G F2P and F2H [Also in Division H2] A coupling for an armoured flexible pipe comprises a substantially tubular sleeve, integral with a body 8, whose internal bore receives the inner layers 5, 6, 7 of the pipe and whose outer surface is covered by the external armouring layer 2 of the pipe up to shoulder 17 of the body 8 which also incorporates a frustoconical surface 12 cooperating with a similarly shaped surface 18 of the bevelled plug member 10 to compress the internal sheath 6 of the pipe which has been interposed therebetween, tightness being adjusted by nut 19. The external casing 9 surrounds the armouring, its integral shoulder 21 interlocking with shoulder 17 of body 8. The assembly is secured by injection of an epoxy resin into aperture 32 filling annular space 22 and by insertion of nails 23 into the external armouring 2, an external ring 11 bearing against shoulder 41 of body 8 and threadably engaging with external casing 9, compressing annular gasket 30 to seal annular space 29. A spring 33 may optionally be placed around the pipe to provide a progressively increasing flexibility close to the coupling. The pipe comprises a flexible, tight tubular core 6 which may be elastomeric material inside a pressure withstanding armouring 5, a flexible, tight tubular sheath 7 surrounding armouring 5 and single or multilayer traction withstanding armouring 2; the armouring 5 being constituted by helically wound strip of Z or S shaped crosssection, and the armouring 2 being formed of layers of wires of circular or I cross-section helically wound upon the external sheath 7. The nails 23 (Fig. 5) are of sawtooth form in longitudinal cross-section. The coupling can accommodate one or more electrical conductors embedded in the external armouring 2 through an aperture in shoulder 17 of body 8 communicating to recess 38 in body 8 where the conductor is connected to another conductor passed through bore 39 of body member to a connecting plug 40.
Patent GB-831449-A (GB)
Title: Improved apparatus for dispensing sheet material from a continuous web
Inventor: HOWLETT EDWARD JOHN
IPC: A47K10/28
Filed: 1957-06-27
Abstract: 831,449. Towelling dispensers. ADVANCE LINEN SERVICES Ltd. June 24, 1958 [June 27, 1957], No. 20319/57. Class 18. The predetermined length of towelling delivered from the device is governed by the length of an endless chain or belt carrying a cam member which operates a locking lever for the delivery roll. The length delivered is independent of the circumference of the delivery roll. The delivery roll 8 carries a sprocket 14 driving a chain 15. The chain also engages a second sprocket mounted on a spring urged arm. A cam member 19 on the chain engages a toe 25 on a pivoted locking lever 21 causing a stop arm 23 to engage a pin 24 on the roll 8 and arrest the delivery of the towelling. The lever 21 may be connected to a pneumatic dashpot 28 to provide a delay, which is adjustable, before the lever 21 releases the roll 8. Radial pegs in the end of the roll 8 engaging the chain 15 or a line of holes in an endless belt may replace the sprocket 14. The chain may carry more than one cam member 19. Specifications 732,768 and 771,387 are referred to.
Patent GB-709573-A (GB)
Title: Process for the production of acid amides
Filed: 1951-08-28
Abstract: Acid amides are manufactured by reacting an a -chloro-, a -bromo-, a -amino-, a -mercapto- or a -thiocyano carboxylic acid or an a  : a 1-dithiodicarboxylic acid, at elevated temperature and pressure, with an aqueous ammonium polysulphide solution or with aqueous ammonia and sulphur, or with aqueous ammonium hydrosulphide solution, preferably with the addition of sulphur.  The products contain in general one less carbon atom in the molecule than the starting materials (which may be aliphatic, cycloaliphatic, araliphatic or heterocyclic), but in the case of a : a 1-dithiodicarboxylic acids they contain one less than half the number of carbon atoms.  The reaction may be carried out by heating in an autoclave to 150-250 DEG  C. (preferably 160-190 DEG  C.), if desired in the presence of an organic solvent (e.g. alcohol, dioxan or especially pyridine).  The amides may be converted into the corresponding acids, which in some cases are also obtainable as by-products on acidifying the reaction medium after recovery of the amide.  Examples describe the conversion of: (1) a -bromobutyric acid to propionamide; (2) a -phenylbromoacetic acid to benzamide (and some benzoic acid); (3) to (5) leucine to isovaleramide; (6) glutamic acid hydrochloride to a mixture of amides which on hydrolysis with caustic soda and acidification yields succinic acid; (7) a -aminophenylacetic acid to benzamide; (8) phenylalanine to phenylacetamide; (9) a -mercaptobutyric acid to propionamide; (10) a :a 1-dithiodibutyric acid to propionamide.
Patent GB-865841-A (GB)
Title: Photoflash unit
IPC: H05B41/32
Filed: 1959-06-15
Abstract: 865,841. Photographic cameras combined with flash lamps. INTERNATIONAL POLAROID CORPORATION. June 15, 1959 [June 23, 1958(2)], No. 20431/59. Class 98(1) [Also in Group XXXV] A photographic flash unit comprises a low voltage incandescent lamp 117 ignited from a capacitor 102 charged through a resistor from a battery, the components being mounted in a casing which supports a reflector 82, which may be of ellipsoidal, hemispherical, or parapaloidal shape, and which has a light diffusing element 86 at its apex and a light transmitter 76 such as a callimating lens or transparent planar sheet at its open end. The casing may be part of a camera or moanted on the camera by means of a foot which carries a switch and three contacts, the latter engaging with similar contacts on the camera. When the casing is attached to the camera, a synchronizing switch is connected into the circuit, and the capacitor is connected to the battery. A spring contact shunts the capacitor when the battery is removed. U.S.A. Specifications 2,662,457 and 2,812,420 are referred to.
Patent GB-797217-A (GB)
Title: Process for the production of cyclohexanone oxime and o-alkyl ethers thereof
Filed: 1955-07-15
Abstract: Cyclohexanone oxime and o-alkyl ethers thereof are prepared by reacting a dialkyl sulphate with at least one salt of nitrocyclohexane in the presence of a solution of alkali metal hydroxide.  Preferably, the dialkyl sulphate is added to the nitrocyclohexane salt and the alkali metal hydroxide solution, the temperature during the addition being maintained above 15 DEG  C. After the addition of the dialkyl sulphate, the products may be obtained from the reaction mixture by bringing it to a pH below 7 and recovering the cyclohexanone oxime and o-alkyl ether thereof, by extraction.  The cyclohexanone oxime and o-alkyl ether thereof can be separated by vacuum distillation.  A salt of hydroxylamine can be added to the reaction mixture following the dialkyl sulphate so as to enhance the yield.  The process may be carried out batchwise or continuously.  Specified salts of nitrocyclohexane are the sodium, potassium and ammonium salts. Specified dialkyl sulphates are the dimethyl, diethyl, di-n-propyl and diisobutyl sulphates.  Specified solvents for the alkali metal hydroxide are water, methanol, ethanol and isopropanol.  In examples: (1) dimethyl sulphate is added to a solution of nitrocyclohexane in aqueous sodium hydroxide; (2) as in (1) but using diethyl sulphate and aqueous potassium hydroxide; (3) as in (1) but using an ethanol solution of a mixture of sodium and potassium hydroxides; (4) as in (1) but hydroxylamine hydrochloride added after the dimethyl sulphate.
Patent GB-1491450-A (GB)
Title: Container finishes
IPC: B65D41/02
Filed: 1974-12-17
Abstract: 1491450 Container finishes ANCHOR HOCKING CORP 17 Dec 1974 [9 Jan 1974] 20496/76 Divided out of 1491449 Heading B8T The description is identical to that of the Parent Specification but the claim is to a container having a finish comprising a gasket guiding surface 20 flaring outwardly and downwardly from the container rim and a sealing surface 5 extending downwardly from the bottom of the guiding surface and having a lesser flare than that of the guiding surface, both of the surfaces being concave in longitudinally axial cross-section and having substantially equal cross-sectional lengths.
Patent GB-823918-A (GB)
Title: Improvements in carbon diffusers for gas activated electric batteries
IPC: H01M12/04
Filed: 1958-06-26
Abstract: 823,918. Batteries. UNITED STATES OF AMERICA, SECRETARY OF THE ARMY. June 26, 1958 [July 11, 1957], No. 20521/58. Class 53. A battery consists of a number of superimposed cells each comprising an anode 1 of zinc, aluminium, magnesium or iron, an electrolyte paste 6 consisting of the chlorides of zinc, calcium and lithium with finely divided carbon and silica, and a carbon cathode 4. A film 5 of regenerated cellulose separates the cathode 4 and electrolyte 6, and the anode 1 is provided with an impervious conductive coating 2. The cell is depolarized by chlorine which is fed through an opening in the battery casing to a diffuser 3 consisting of a compressed mat of inorganic fibres impregnated with finely divided carbon and an inorganic binder. The fibres may consist of glass, asbestos or aluminium silicate and they are mixed with water in a high-speed mixing machine. A suspension of carbon black in water and a wetting agent is then added, together with the binder which may consist of sodium silicate and the mixing continued for a few minutes. The liquid in the mixture is then removed and the solid residue compressed into discs which may be grooved.
Patent GB-1515023-A (GB)
Title: Photometric system
IPC: G01N21/27
Filed: 1975-05-15
Abstract: 1515023 Sample cells WATERS ASSOCIATES Inc 15 May 1975 [15 May 1974] 20612/75 Heading G2J [Also in Division B1] A sample cell for use in photometric analysis of a continuously flowing liquid comprises a truncated, generally conical chamber 32 closed at the ends by transparent plates 23, 26, the smaller end of the chamber defining a radiation inlet and the larger end of the chamber defining a radiation outlet.
Patent GB-380206-A (GB)
Title: Means or apparatus for rendering or refining fats and heavy oils
IPC: C11B1/12
Filed: 1931-07-20
Abstract: In apparatus for rendering fats and heavy oils by steam and hot air within an insulated chamber 4, the reticulated container 9, the drip collector 13, or both have a filter 12, 15, and the water boiler 17 and drip collector 13 have uptakes such as 20, 14, 30 for the hot air and steam.  There may also be provided a fine wire gauze or fibrous filter 15x across the overflow 22 of the drip collector, a trap T divided by a wall 23 with a fine wire gauze top 24, a screen 26, a cowl 21 or a chamber 21x, Fig. 2, with a portion 21y extending into the container <PICT:0380206/III/1> <PICT:0380206/III/2> 9, and a hot-air chamber 27 having inlets 28 and outlets 29.  The heating may be effected electrically, or by a gas ring 1, or by other means.
Patent GB-1262781-A (GB)
Title: Improvements in or relating to material delivering apparatus
Inventor: PEBERDY REGINALD KENNETH
IPC: G01G11/08
Filed: 1969-04-23
Abstract: 1,262,781. Weighing apparatus. SIMON-BARRON Ltd. April 21, 1970 April 23, 1969], No.20670/69. Heading G1W. In a continuous feed weigher the amount of material fed from a hopper 2 to a conveyer belt 4 is metered by a gate 6 which is controlled by the out of balance of a pivoted weigh-beam 5 upon which the conveyer is disposed in a manner such that the tension in the conveyer belt remains constant during pivotal movements of the weigh-beam. The conveyer may be arranged so that its upper run has a forward position which is substantially horizontal and a rearward portion inclined downwardly from the horizontal portion, the junction between the two portions being located near the pivot axis of the weigh-beam. The lower run of the conveyer may pass over a roller at the center of the weighbeam. The weigher may have stops 14 to limit pivotal movement of the weigh-beam, a plate 18 giving support to the conveyer as it passes under the hopper outlet 3, a scraper 23 which acts upon the lower run of the conveyer, a post 15 upon which weights may be placed to adjust the balance of the weigh-beam and hence the flow rate of material, and a counterbalance beam 17 for balancing the beam about the pivot axis. A trim weight 24 provides fine adjustment for the weigh-beam and a micro-switch 21 actuates the motor 20 of the gate 6 in response to pivotal movement of the weigh-beam.
Patent GB-1045338-A (GB)
Title: Improvements in or relating to inking devices for franking and like stamp printing machines
IPC: B41K3/60
Filed: 1963-05-23
Abstract: 1,045,338. Inking rollers. HASLER A.G. May 23, 1963 [May 25, 1962], No. 20701/63. Heading B6C. A self-supplying inking roller for a rotary printing machine comprises a hollow cylinder 1 of hard rubber or a resilient synthetic plastics material which has orifices 2 covered by a jacket 3 of felt, foam rubber or porous synthetic plastics material. The cylinder, which is formed with a bearing pivot 7 and a journal 4 and shoulder 5 acting as abutments for a tensioning spring 6 which bridges a cut-out 15 in a frame member 22 of the machine in which the roller is used, is filled with ink from one end and sealed by a cover plug 9 of hard rubber or a resilient synthetic plastics material. On insertion of this plug, which has a tapered securing ring 10 the outer diameter of which is greater than the inner diameter of the cylinder 1, into the cylinder the ring engages a groove 11. Sealing washers 12 to prevent leakage of the liquid from the cylinder 1, are mounted on the plug and also have an outer diameter greater than the inner diameter of the cylinder 1. In use, the bearing pivot 7 lies in a bore 14 formed in a frame member 22 of the machine and both the jacket 3 and the cylinder 1 are compressed when the jacket contacts a printing plate mounted on the plate cylinder. The extent of compression and thus the degree of wetting of the jacket 3 may be regulated by adjustment of the tension of the spring 6.
Patent GB-706797-A (GB)
Title: Improvements in and relating to electric pumps for barrels and the like
IPC: F04D13/06
Filed: 1951-09-03
Abstract: 706,797. Centrifugaland screw pumps, LAING, N. Sept. 3. 1951 [Sept. 13, 1950; Aug. 6, 1951], No. 20715/51. Class 110 (1). [Also in Groups XXVIII and XXXV] A portable electrically-driven pump comprises a tubular body the lower end of which can be inserted into a barrel or other narrow-necked container, the tubular body having an inlet at or near its lower end and an outlet near its upper end, a pump rotor being housed within the tubular body just above the inlet and the driving motor being enclosed in the tubular body or in a casing forming a continuation thereof. The pump shown in Fig. 3 comprises a main impeller 16 directly driven by a motor 19 and an auxiliary impeller 14 driven through a conical clutch member 22, Fig. 4, which engages a conical seat 21 formed on the impeller 16. When the pump is started, the impeller 14 is driven through the clutch until the liquid reaches the impeller 16, when the buoyancy of the impeller 14 and its hollow shaft 17, together with the axial thrust due to the pumping action, causes an upward displacement which disengages the clutch and brings a braking surface 25, which may be serrated, against a stationary seat 24. A switch 3 and a carrying handle 1 are provided. The motor may be located between the impellers. A thermal cut-out is preferably provided within the motor to prevent overheating. due to the pump running idle or conveying hot liquid. In an alternative construction, Figs. 7 and 8, a single impeller 37 and its driving motor 36 are contained in an inner cylinder 32 which carries a packing ring 38 and guide members 39 over which is pushed an outer cylinder 310. The pumped liquid flows through the annular space between the cylinders and is discharged through a connection 312. A detachable screen 321 is secured in place by a circlip 320. The handle 31 is in two halves which surround the cylinder 310 and connection 312 and are clamped together by a nut 316, Fig. 10. The impeller may be of the worm type, working within a stator provided internally with helical threads. The pump may be controlled by an annular float surrounding the cylinder 310 and connected by lost motion linkage to the switch. An extension hose 350, Fig. 21, may be connected to the pump. To draw the liquid up to the level of the impeller 37, the discharge pipe 353 is closed by pushing a pipe 355, carried by a flexible diaphragm 354, into a chamber 352 until a plate 356 closes an opening 359. A flexible bulb 358 is then squeezed and released, thus drawing the liquid up the hose 350. A float 361, Fig. 23, carrying a screen 362 and pipe 360, may be screwed into the pump inlet.
Patent GB-903757-A (GB)
Title: Method of joining a pipe
IPC: F16L47/22
Filed: 1961-06-08
Abstract: 903,757. Pipe joints. MONTECATINI SOC. GENERALE PER L'INDUSTRIA MINERARIA E CHIMICA. June 8, 1961 [June 13, 1960; March 17, 1961], No. 20764/61. Class 99(1). In a method of for ming a joint in a pipe T of thermoplastic material and having an elastic memory one end of the pipe is radially expanded and disposed over a fitting R, having grooves or saw teeth S, the expanded end of the pipe then being heated so as to form locking collars with the grooves by tending to resume the initial shape thereof.