baber/WOPTO huggingface dataset:
Patent GB-726716-A (GB)
Title: Improvements in and relating to electric cookers
IPC: F24C15/10
Filed: 1953-04-16
Abstract: 726,716. Electric cookers and hot-plates. LOCKER. O. April 16, 1953 [April 18, 1952; Jan. 8, 1953], No. 10469/53. Classes 39 (3) and 126. An electric cooker for large kitchens has one or more hollow axles 13 pivoted in the upper part of the cooker, each axle having mounted therein one or more carriers 14 supporting hot-plates 5, the hollow axles and carriers accommodating the electric leads, so that the hot-plates and carriers may be tilted up for cleaning beneath them. The hollow axle 13 is disposed longitudinally or transversely of the cooker, and two hot plates may be mounted on one axle in a bay of the cooker. The terminals of the hotplates extend into sealing casings 11 beneath them and the leads therefrom pass through tubes 14 forming the carriers into the axles 13, at the end of which is a switch. Several parallel hollow axles may be arranged across a cooker, and a projection on each axle supports a hot-plate on an adjacent axle. The cooker carries beneath the hot-plates a sloping trough 40 with a discharge 41 at the lower end for draining rinsing water. The trough 40 may comprise several overlapping sloping plates. The hollow axles 13 may be below the edge of the hot-plates or below the centres thereof. The hotplates may be tilted by turning the hollow axles by an arm engaging a socket adjacent the end of the axles. The axle 13 may carry on an arm at one end a spring-pressed pin which engages an aperture in a bearing flange of the axle so as to lock the hot-plates in raised position. Several parallel axles may be turned simultaneously by a hand crank rotating a rod carrying worm wheels each engaging a worm wheel on each axle; or each axle carries a spur gear engaged by a toothed rack mounted on a single rod which is moved longitudinally by a screwed spindle at its end to tilt the hot-plates. Alternatively the axles 13 carry lever arms linked to a push rod which is moved longitudinally to rotate the axles' (Fig. 14 not shown), or the axles carry sprocket wheels over which run chains. The hot plate 5 rests on an insulating sheet 6 on a base plate 7 attached to the axle 13 by a connecting piece 12 which has a shoulder 16 on which the edge of an adjacent hotplate may rest. The hot-plates are square in outline, or round hot-plates may be mounted in rectangular frames. Sheet metal covers 24 between the top edging 26 of the stove and the hot-plates are readily lifted out when the hot-plates are to be moved.
Patent GB-541942-A (GB)
Title: Improvements in or relating to bridge arrangements for the comparison of electrical resistances
IPC: G01R17/10
Filed: 1940-06-17
Abstract: 541,942. Resistance measurements. BLUMLEIN, A, D. June 17, 1940, No. 10471. [Class 37] A bridge for comparing low resistances is arranged so as to reduce errors due to contact resistances. The bridge comprises ratio arms AC, AD, an arm BD containing the standard resistance Ro, and an arm Bc containing the resistance R1 which is to be compared with the resistance Ro. An alternating current source having a frequency of about 1000 cycles per second is connected between the points AB, and a voltage detector P such as a pair of telephones with a thermionic amplifier is connected between the points C, D. If it is desired to adjust the resistance R1 to equality with the standard Ro, the ratio arms AC, AD are chosen to be of equal impedance and the resistance R1 is adjusted until the voltage between the points C, D is a minimum. Contact resistances r2, r6 in series with the detector P do not affect the balance of the bridge and may be neglected. Contact resistances r1, r5 in series with the ratio arms AD, AC have negligible effect on the balance of the bridge provided they are small compared with the impedance of the arms AD, AC. The error due to the resistances r1, r5 may therefore be reduced by increasing the impedance of the arms AC, AD. The shunting effect of stray capacitances may be reduced by forming these arms as two tightly coupled inductances L1, L2 and earthing their common point, so that each arm has a high impedance but the voltage set up across each arm when the bridge is in balance is small. In order to reduce the errors due to contact resistances r4, r8 in series with the resistances Ro, R1, one end of each of the resistances Ro, R1 is connected by one pair of leads to the ends of a resistance R3 which is provided with an adjustable slider B. The same ends of each of the resistances R1, Ro are connected by a separate pair of leads to a tapped resistance R2 which is small in relation to the resistance R3. The resistance R3 is adjusted fo bring the bridge into balance and the position of the slider B in relation to the mid-point of the resistance R3 then indicates whether the resistance R1 is higher or lower than the standard Ro. The resistance R1 is then changed by adjusting the soldered connection and the procedure continued until balance occurs with the slider B at the mid-point of the resistance R3. As the value of the resistance R1 approaches equality with the standard Ro, the resistance R2 is decreased to give greater sensitivity. A resistance may be inserted between the generator G and the point A of the bridge and the voltage across this resistance applied to the moving plate of a differential condenser, the two fixed plates of which are connected to the points C, D. The current component in quadrature with the in-phase currents in the arms BC, BD may thus be equalized and the voltage minimum across the points C, D sharpened.
Patent GB-962053-A (GB)
Title: Improvements relating to electrolytic marking inks
Inventor: CLIFF HARRY OLIVER
IPC: C25F3/14
Filed: 1962-03-19
Abstract: An electrolytic marking ink, for use with an absorbent and an applied voltage, consists of a solution containing per 100 cc. an alkali metal nitrite from 2 g. up to saturation measured at 0  DEG C., a neutral sequestering agent 0.2-1 g. and a non-ionic surface-acting agent 0.05-1 g. The saturation amounts of nitrate are NaNO2 72 g., KNO2 281 g., LiNO2 125g.  The sodium salt of E.D.T.A. is preferred as sequestering agent but the citrate or gluconate may be used. The preferred surface acting agent is polyethanoxy octyl cresol. Surfaces of steel, aluminium, titanium copper or their alloys, treated at 20V. A.C. or D.C. give a range of colours.
Patent GB-238923-A (GB)
Title: Improvements in or relating to regulating and locking means for windows, particularly those used on automobiles
IPC: E05F11/38
Filed: 1925-01-29
Abstract: 238,923. Crudgington, E., and Smye, A. Jan. 29, 1925. Vehicle-window opening and closing apparatus. -Holding means adapted to be released by the initial movement of the handle consist of gravity- or spring-controlled balls &c. 6 in tapered cavities 5 between the movable member 3, attached to the operating lever or chain wheel, and the fixed casing 1. The handle 16 has an extension provided with an inturned lug 14 projecting between the balls &c. through a slot. in the cover 13 and adapted to release that one of the holding balls which opposes movement. A balancing spring, such as a helical spring 17, may be combined with the lever 8 or its spindle. In the case of a chain-operated sash, the central cut-out part of the cover 13 is secured to the member 3.
Patent GB-108317-A (GB)
Title: Improvements in Lawn Mowers.
Inventor: WORTHINGTON CHARLES CAMPBELL
IPC: A01D75/30
Filed: 1916-12-20
Abstract: 108,317. Worthington, C. C. Dec. 20, 1915, [Convention date]. Lawn-mowers. - Each unit of a gang lawnmower is provided with a dis@ectible clutch 0member between the cutter shaft and the cutter reel. Each unit comprises a pair of ground wheels 5 which drive a rotary cutter shaft 10 through a train of gearing housed in the side plates 7. The shaft 10 has rigidly secured to its centre a disk 16 provided with apertures adapted to receive one or more rods 18 mounted on a collar 19 and arranged to move through dust-proof openings in two housing-parts 15<a>, 15<b> each mounted on a separate sleeve 12 on the shaft 10 and bolted together to form a chamber for the disk 16. The sleeves 12 carry the rotary cutters, and when, by pushing in the rod 18, the disk 16 is rigidly connected with the housing, the cutters are rotated as the ground wheels rotate. The clutch may be hand-operated, or it may be pushed in by a spring 20 and released when the cutters are lifted from the ground. In the latter case, the rods 18 are extended and secured to a sliding collar 24 provided with a groove engaged by the forked end of a lever 25, which is attached to the cutterlifting chain 29 by a bridle 27. The tension of the spring 20 may be so arranged that the clutch will be operated after the cutters have been lifted a. predetermined distance. To permit the clutches of the several units to be operated simultaneously by a lever 35, the link 37 which moves the operating shaft 31 for the rear units is provided with an horizontal joint to allow for the movement of a fifth. wheel joint 4.
Patent GB-105801-A (GB)
IPC: B63B17/02
Abstract: 105,801. Walker, J. H. April 29, 1916. Awnings, special applications of.-Relates. to lifting or hauling appliances of the kind wherein the lifting &c. rope has a sluing rope in connexion with it and works through a sleeve which allows the lateral movements of such rope to be controlled so that it can be used in conjunction with an awning' as described in Specification 104,377. The ropes a, h, Fig. 5, pass through slots in a plate o which is suspended with the frame d to which the awning c is connected The frame is preferably inclined, and the edges of the slots are turned up so as to form a series of gutters through which water can be directed away. The hips of the main awning are fitted with rings which are free to travel on the guide ropes attached to the corners of the frame d.
Patent GB-477248-A (GB)
Title: Improvements in or relating to presser feet for sewing machines
IPC: D05B29/00
Filed: 1937-04-14
Abstract: 477,248. Sewing-machines. MAUSERWERKE AKT.-GES. April 14, 1937, No. 10631. Convention date, April 16, 1936. [Class 112] A presser-foot b has the sole portion a provided with one or more yielding runners f consisting of a closed spring band encircling the sole and providing a space between the band and the bottom of the sole to provide a resilient clearance for cross seams s as shown in Fig. 6. The sole may be shouldered as at k and i, Fig. 9, to accommodate the spring runners.
Patent GB-527260-A (GB)
Title: Improvements in electric regulating switches
IPC: H01H19/62
Filed: 1939-04-05
Abstract: 527,260. Snap-action switches. THOMPSON, S., and TRICITY COOKERS, Ltd. April 5, 1939, No. 10635. [Class 38 (v)] A rotatable shaft 1 provided with an indicator plate 5, carries an insulating disc 10 on which is a spring plate 12 carrying a metal element 11, which is adapted, as the shaft is rotated, to depress movable contacts 17 in turn against corresponding fixed contacts 15 on the base 2, the contacts 17 being arranged radially of a central metal disc 18. The shaft 1 is located in each contact-making position by a star wheel 6 having one groove for each pair of contacts 15, 17, the grooves being engageable by a pair of spring-pressed balls 7 in a socket 9. The contacts 15 are connected to terminals 16 which all face the same direction so as to facilitate wiring to tappings of an auto-transformer controlling the supply of current to a cooker or the like. The foot of shaft 1 carries an insulating cam 19 adapted to operate a pair of spring contacts, of which 20 opens the transformer circuit when the switch is in "off" or full-heat position and 21 opens the live lead when it is in the "off" position. The co-operating contacts 26 are connected to terminal 23 whereas 20, 21 are connected to terminals 22, 24, respectively. One of the arms 17 is connected to an incoming mains lead at 23, this position corresponding to the open position of contacts 20. 21.
Patent GB-745157-A (GB)
Title: Improvements in or relating to machines for peeling or preparing vegetables and the like
IPC: A47J17/18
Filed: 1953-04-20
Abstract: 745,157. Potato peelers. TWEEDY & CO., Ltd., G., and BROOKS, E. May 19, 1954 [April 20, 1953], No. 10739/53. Class 28(2). Potatoes, &c. dropp ed into an inner con tainer 5 and peeled by the action of a rotated abrasive bottom plate are discharged through side openings 7 and 3 ir the inner and an outer fixed container 1 respectively, the openings being brought intc register by hand rotating the inner container by its flared edge 13. Registering is deter. mined by a stop 9 on 5 abutting against one stop 11 on 1, and non- registering by abutting against the other stop 11. The inner container may have an abrasive surface. A water spray 19 in a slot 21 is provided and a waste outlet may be provided at or near the bottom of both containers.
Patent GB-560759-A (GB)
Title: Process and apparatus for the production of lead oxide
IPC: C01G21/06
Filed: 1942-07-31
Abstract: 560,759. Lead oxide. FEUER, E. July 31, 1942, No. 10778. [Class 1 (iii)] Lead oxide is obtained by oxidation of atomized lead in a stream of oxidizing gases derived from the heating means for melting the lead, the gases being brought into contact with the atomized lead at such a distance from the atomizing chamber that no reaction between the hot gases and the lead in the atomizing chamber can take place. In the apparatus shown in Fig. 1 molten lead contained in a vessel 3 is atomized by a centrifugal atomizer 15 having air ducts 17 for an air current to carry atomized lead upwards into a lateral conduit 12. The vessel 3 and a vessel 6 for melting lead, introduced through a lateral opening 7 in the casing, are heated by gases introduced through a flue 19 which pass upwards through flues 11 into the conduit 12 to react therein with the atomized lead.
Patent GB-610298-A (GB)
Title: Improved apparatus for sifting materials
IPC: A23F3/00
Filed: 1946-04-09
Abstract: 610,298. Sifting-apparatus. BROOKE, BOND, & CO., Ltd., and COOKE, W. M. April 9, 1946, No. 10870. [Class 117] A vibrating motion is imparted to a perforated sifting drum 5 which contains granular material such as tea, by mounting the shaft 4 of the drum eccentrically in a sleeve 3 and rotating the sleeve relatively to the shaft. Preferably both the drum and shaft are rotated but at different speeds. As shown, the shaft 4 extends outwardly from one end wall 5b of the drum, the other end of the drum being open for introducing the material into the drum. The shaft is inclined so that it is eccentric to the sleeve at the drum end but is concentric at the opposite end. The drum is somewhat downwardly inclined so that the larger pieces of material which do not pass through the perforated cylindrical wall travel towards, and are discharged through, the open end. The sifting perforated surface 5a may be constituted by a sheet of gauze releasably secured upon the drum structure, e.g. by means of spring strips 14a each having a loop at one end engaging a crank pin 15 on the end disc 5b and a hook 14b at the opposite end to hook on to the front end ring 5c of the drum. The ends of the perforated sheet may overlap in a shallow longitudinal trough formed in the outer surface of one of the stays 13 and be secured by a strip 14a. In the case of tea sifting the end wall 5b of the drum carries within the main drum 5 so as to be rotatable therewith a smaller diameter perforated drum 16 for use in breaking up moist rolled green leaf.
Patent GB-813880-A (GB)
Title: Improvements in or relating to the polymerisation of ethylene
IPC: C08F2/00
Filed: 1957-04-03
Abstract: Catalysts used in polymerizing ethylene (see Group IV (a)) are obtained by heating aluminium (preferably in the pure state) with a vanadium chloride (e.g. the tetrachloride) at a temperature up to 300 DEG  C. and in the absence of polymerizable hydrocarbons.  A diluent which is not contaminated with sulphur-containing impurities may be present in the preparation of the catalyst and specified are benzene, hexane, heptane, decahydronaphthalene, cyclohexane and cyclohexene. Subsequent to polymerization, catalyst residues may be removed from the polymers by the use of methanolic hydrochloric acid, methanol, solvents such as cyclohexane, or a combination of these treatments.ALSO:Ethylene is polymerized by a batchwise or continuous process using as catalyst the product obtained by heating aluminium (preferably in the pure state) with a vanadium chloride (e.g. vanadium tetrachloride) at a temperature up to 300 DEG  C. and in the absence of polymerizable hydrocarbons.  A diluent which is not contaminated with sulphur-containing impurities, may be used in the preparation of the catalyst and/or in the polymerization and specified are benzene, hexane, heptane, decahydronaphthalene, cyclohexane and cyclohexene.  The polymerization may also be effected in bulk and, if desired, technical ethylene may be used. In the example ethylene is repressurized into the autoclave during polymerization.  The solid polyethylenes obtained may be purified by the use of methanolic hydrochloric acid, methanol, solvents such as cyclohexane, or a combination of treatments.
Patent GB-300085-A (GB)
Title: Improvements in or relating to the reinforcement of concrete structures
IPC: E04C5/03
Filed: 1928-04-13
Abstract: 300,085. Chubb & Son's Lock & Safe Co., Ltd., Butter, F. J., and Ball, H. S. April 13, 1928. Reinforced concrete.-Twisted strip reinforcement with fins similar to those described in Specification 282,226 are produced by cutting a metal strip in the zig-zag manner shown in Fig. 1, leaving the edges plain; the two portions are then placed together with the plain edges overlapping, and the whole is twisted axially, as shown in Fig. 4.
Patent GB-680667-A (GB)
Title: Method of regulating gas turbine plants
IPC: F02C9/28
Filed: 1951-05-03
Abstract: 680,667. Gas turbine plant. MASCHINENFABRIK OERLIKON. May 3, 1950 [May 16, 1949], No. 10973/50. Class 110(iii) In a gas turbine plant, air from the working cycle of the plant is used to transmit the impulses from a speed governor driven by the turbine to a valve controlling the fuel supply. In the plant shown air compressed in a compressor 1 is heated in a heat exchanger 2 by the exhaust gases from the turbine 4 and then fed to a combustion chamber 3 supplying the turbine 4. The fuel supply to the combustion chamber 3 is controlled by altering the pressure above the level of the fuel in the chamber 8. For this purpose, the chamber 8 is connected at point 14 to a conduit 15 through which control air is taken from the working fluid circuit at point 12 and returned at point 13. The point 14 lies between a fixed orifice 10 and a valve 7 operated direct by a speed governor 6. The control air may be discharged to atmosphere instead of being returned to the circuit. A plurality of control air streams branched off from the circuit at various points and returned to the circuit at a point of lower pressure may be employed.
Patent GB-971319-A (GB)
Title: Gear finishing machine
IPC: B23F15/00
Filed: 1963-03-20
Abstract: 971,319. Gear - finishing. NATIONAL BROACH & MACHINE CO. March 20, 1963 [April 12, 1962], No. 10985/63. Heading B3B, B3K and B3T. A gear-finishing machine comprises a rotary work support 20, Figs. 3 and 4, reciprocable horizontally in any direction, a cutter slide 56 movable vertically on a column, the axes of the work and cutter being horizontal, and means 26 for effecting vertical feed of the cutter. The table 20 can be rocked for crowning a gear and is adjustable angularly on slides which can be adjusted to set the direction of traverse whilst maintaining the set crossed-axes angle. A cutter feed motor 28, Figs. 4 and 21A, driving a screw 290 engaging the nut 26, and a cutterrotating motor 40 are both mounted in the column, which has two legs 61, 62 to allow work transfer means to pass through. A drive transfer box 50 supported by and partly within the column projects into the slide. The box 50 contains gearing 558 interconnecting a shaft 534 (position 48, Fig. 4) driven by the motor 40, with a splined shaft 334 (position 54, Fig. 4) driving the cutter 58, and gearing 552 interconnecting a shaft 436 (36), driven by the motor 28 with a shaft 308 (52) driving the screw 290. The cutter-drive includes change-speed gears controlled by hand-knobs. The screw 290 (Fig. 9) is coaxial with a gear 342 in the cutter drive and with a recess 348 in the slide which receives the angularly adjustable cutter head 56, Fig. 23. The head is adjusted angularly by a manually-rotatable worm engaging a worm-wheel 364. The cutter-spindle 570 is, supported by an outboard-bearing 598. The motor 28 drives the screw through an hydraulically-operated clutch 406 which controls the feed-speed by selecting the drive through wormgearing 392 and 400. The gearing also rotates a control disc 38, Fig. 12, having dogs to actuate switches 460, 462, 464, 466 which control withdrawal of the cutter slide, fast feed, incremental feed and dwell, the latter being achieved by a simultaneous switching-off and braking of the motor. After several strokes of the work with in-feed, a finishing stroke may be made without additional feed.
Patent GB-569355-A (GB)
Title: Improvements in variable speed gear
Filed: 1943-07-07
Abstract: 569,355. Variable-speed gearing. GUY MOTORS, Ltd., ANDREWS, A., GILBERT, W. H., and REECE, J. E. July 7, 1943, Nos. 11004 and 11007. [Class 80 (ii)] In variable-speed gearing in which a countershaft 3 is constantly driven by a driving-shaft 12 and transmits different speeds to a driven shaft 2 through a number of gear pairs of different ratios, the driven shaft 2 and the countershaft 3 are both supported by bearings 6, 7 arranged at each side and in the immediate vicinity of the gears 4, 5 for the first or low speed. The bearings 6, 7 may be carried by a casing 8 separate from the main gearcasing 9 or, as shown, only the bearings 6 may be so carried. Preferably, all the gears 4, 12a, 12b, which are freely mounted on the driven shaft 2, are clutchable to the latter by clutches acting on the synchro-mesh principle, and bearings intermediate these gears are dispensed with. Specifications 569,354 and 569,356 are referred to.
Patent GB-1187202-A (GB)
Title: Improvements relating to Sequential Sample Analysis
Inventor: POLLARD ALAN
IPC: G01N15/06
Filed: 1966-03-14
Abstract: 1,187,202. Automatic analysis apparatus; moving band filter. WRIGHT SCIENTIFIC Ltd. and A. POLLARD. 14 March, 1967 [14 March, 1966], No. 11082/66. Headings B1D and B1X. Apparatus for filtering precipitates for examination in automatic analysis procedures, for example the radio immune assay of insulin, comprises an extended strip 4 of filter medium, reinforcement applicator 20, 19 for applying for example rubber solution to the edges of strip 4, filtration unit 7 including a liquid permeable filter support and means included in 33-36 for discharging a liquidsolid mixture for filtration on to the strip, drying unit 8, laminating unit 9 for continuously securing a protective lamina 12 over at least one surface of the strip, and means for advancing strip 4 successively through applicator 20, 19, filtration unit 7, drying unit 8 and laminating unit 9. The strip may then pass through detector unit 55, for example a geiger or scintillation counter, and is then wound by reeling unit 17. Strip 4 may be of felted glass fibre and may be supported on a perforated strip of polytetrafluoroethylene 26 over perforated steel plate (25) (Fig. 3 not shown). In the analysis apparatus of Fig. 5 (not shown) samples of insulin-containing material from turntable (70) are mixed with antibody suspension from (73) and with labelled insulin from (74). An air-segmented stream of treated samples passes through reaction coil (84) and is delivered through nozzle (34) on to strip 4 for filtration.