baber/WOPTO huggingface dataset:
Patent GB-918339-A (GB)
Title: Control systems for electric motors
IPC: H02P27/02
Filed: 1961-02-03
Abstract: 918,339. Control of A.C. motors. STANDARD TELEPHONES & CABLES Ltd. Feb. 3, 1961 [Feb. 10, 1960], No. 4170/61. Class 38 (3). A motor having star-connected primary windings W7, W8, W9, is supplied from a transformer having delta-connected primary windings W1, W2, W3, and star-connected secondary windings W4, W5, W6. Parallel-connected transistor-rectifier combinations are included in the motor primary circuit and in the transformer secondary circuit, between each winding and a neutral point D or C. The bases of all the transistors are connected in common to a terminal A of a source A, B, of control voltage. The transformer may be replaced by a generator. Single-phase arrangements are referred to.
Patent GB-1430694-A (GB)
Title: Probe units for electro-surgical devices
IPC: A61B18/14
Filed: 1974-01-29
Abstract: 1430694 Probe tips WHALEDENT INC 29 Jan 1974 [12 March 1973] 4208/74 Heading A5R [Also in Division H2] A probe unit 10, Fig. 1, for use in an electro-surgical device for applying high level, high frequency voltage to tissue etc, includes a probe tip 33, Fig. 5, inserted removably into a conductive sleeve 32 of a plastics nosepiece 24 of said unit, said tip comprising an insulating generally cylindrical shell 34 having two opposed slots 35 and a narrowed end 66, Fig. 5, and a conductive resilient wire 37 having a portion extending beyond end 66 to form a cutting tip 38 and a portion generally disposed in said shell but having two opposed arcuate portions 36 each passing through a slot 35 and being depressed into said shell on insertion of the shell into the sleeve. The sleeve is electrically connected to a source of voltage by cooperating male and female connectors 30, 20 respectively and leads of a coaxial cable 40. A micro-switch 46 is provided on the end 13 of housing 12 of said unit. The nosepiece has a proximal section provided with a cylindrical recessed portion (61) Fig. 2 (not shown) adapted to be located around a cylindrical end portion (49) an end 13 of said housing, a spring 28 being interposed between said portions. The proximal section of the nosepiece has a cylindrical exterior (60) and a distal section thereof has a frusto-conical exterior. In an alternative embodiment, the distal section (70) Fig. 3, (not shown) is of contraangled form. The wire 37 is a continuous section substantially doubled up, a diamondshaped loop thereof forming the cutting tips in a plane substantially normal to the wire portion generally within the shell. The end 64 of the shell remote from the loop is flared and provided with axial slots 80 for resiliency said end being of plastics material. A neon light 44 indicates when high level, high frequency voltage is being applied to tip 38.
Patent GB-585316-A (GB)
Title: Improvements in or relating to the purification of capryl alcohol
IPC: C07C29/74
Filed: 1945-02-20
Abstract: Capryl alcohol is separated from methyl hexyl ketone in a mixture of said compounds (such a mixture being for example, the crude capryl alcohol obtained as a by-product in the preparation of sebacic acid by treating castor oil with caustic alkali) by heating with an alkalimetal condensing agent for the ketone and separating the capryl alcohol from the polymeric ketone.  In the example, the mixture of capryl alcohol and methyl hexyl ketone is refluxed with sodium hydroxide solution, and the evolved water removed.  In example (1) the reaction is carried to completion and capryl alcohol distilled from the product under vacuum.  In example (2), the refluxing is stopped when only part of the water has been removed, pure capryl alcohol is distilled off and more crude capryl alcohol added and the refluxing continued.  This process may be repeated indefinitely. Other known alkali metal condensing agents may be used, such as the oxides, hydroxides, amides or alkoxides of sodium lithium or potassium.
Patent GB-989561-A (GB)
Title: Improvements in or relating to the measurement of oxygen consumption by an oxygen absorbent
IPC: G01N33/18
Filed: 1962-02-05
Abstract: 989,561. Determining oxygen absorption by absorbents. J. M. VOITH G.m.b.H. Feb. 5, 1962 [Feb. 22, 1961], No. 4264/62. Heading B1X. The oxygen consumption by an oxygen absorbent is measured by introducing a sample of the absorbent into an oxygen-containing system closed to the atmosphere, measuring the drop in. pressure in the system to obtain a measure of the oxygen consumption by the sample, and using the indication in pressure drop to replenish the oxygen content to neutralize the pressure drop, thus making the system ready for the sample to absorb more oxygen. The indication of the pressure drop may be used to supply oxygen to the closed system from an oxygen reservoir or to initiate electrolysis of copper sulphate solution using a constant electric current actuated by the level of a column of mercury which makes or breaks the electric circuit, the level of mercury being determined by the pressure in the system. The time intervals between breaking and making the circuit may be transmitted to a digital pulse counter or to a line recorder for graphical recording. The method may be carried out at constant temperature. In Fig. 3 a test vessel 1 is associated with an electrolytic cell 49 and a contact pressure gauge 48. Test substance 11 absorbs oxygen and mercury electrode 56 contacts electrodes 57 thus causing the electrolytic cell to produce oxygen which is supplied to test vessel 1 thus increasing the pressure and lowering the mercury electrode 56. A carbon dioxide absorber 8 and stirrer 9 may be provided. Recordings are obtained on the indicating device 72. Fig. 2 (not shown) shows an alternative form of test vessel wherein a hollow stopper contains carbon dioxide absorbent. The method may be used to determine the biological oxygen requirement in water supplies.
Patent GB-693160-A (GB)
Title: Shoulder-bead for use in dry-wall construction
IPC: E04F19/02
Filed: 1952-02-19
Abstract: 693,160. Wall corners. DUNLAP, A. H. Feb. 19, 1952, No. 4364/52. Class 20(iv) A corner crowning structure for use in dressing and protecting an outside corner formed by two meeting sheets 10, 11 of wall board comprises a wide ribbon 6 of flexible material and a narrow strip 5 of inflexible material centred upon and cemented to the ribbon so that edge portions of the ribbon project laterally as wings 7 beyond the edges of the strip, so that the strip closely fits the corner and the wings cover the adjacent portions of the wall boards. A putty-like covering material 13 is applied over the wings and portions of the wall boards and dressed flush with the exposed face of the wall board, immobilizing the wings, holding the strip in position, and giving a smooth surface. Strip 5 may be formed of plastic, metal &c., and the ribbon is suitably made of a heavy grade strong paper. A layer 12 of putty, joint cement &c. is first spread over the corner, the corner-board pressed into position and excess joint material forced out, a thin skin of joint cement applied and allowed to dry, and the thin finish coat 13 of cement applied and smoothed down beyond the side edges of the wings. The wall may then be painted.
Patent GB-436365-A (GB)
Title: Improvements in or relating to pistons for internal-combustion engines
IPC: F02F3/02
Filed: 1934-04-09
Abstract: 436,365. Pistons. AUTOMOTIVE ENGINEERING CO., Ltd., and BAKER, R. J., The Green, Twickenham, Middlesex. April 9, 1934, No. 4400. [Class 122 (i)] The lower portion 15 of the skirt is separated from the remainder by a single circumferential slot 14 or by two or more slots in the same plane, the slots being arranged in the skirt at the side of the bosses remote from the head and webs 16 connect the bosses with the said portion. Longitudinal slots 18 may extend from the circumferential slots.
Patent GB-181677-A (GB)
Title: Method of and apparatus for the treatment of silicates with acids in order to obtain solutions of salts free from silica
IPC: C01D9/04
Filed: 1922-02-15
Abstract: 181,677. Blanc, G. A. June 14, 1921, [Convention date]. Solids, treating with liquids.-Silicates are decomposed by means of acids to give clear solutions of salts free from silica by the following method. Granulated leucite, for example, is treated in the receptacle 1 having a perforated base 3, with an acid solution which is circulated repeatedly by means of pump 6 and pipe 5. Salts of potassium and aluminium are formed, and any colloidal silica which is also produced becomes occluded by the undissolved siliceous material in the receptacle 1. The supply of acid may be replenished by means of the tower 10. The solution falls on the grid 11 and comes in contact with hydrochloric, nitric or other acid in the vaporous condition, which enters the tower through the pipe 12, the superfluous gas leaving by the pipe 13.
Patent GB-621307-A (GB)
Title: Improvements relating to electric couplings of the plug and socket type
Filed: 1947-02-15
Abstract: 621,307. Two-part couplings. DUNN, W. E. Feb. 15, 1947, No. 4452. [Class 38 (i)] In a plug element of a plug-and-socket coupling, wires extending through diverging passages 11, 12, 13, leading from the side of the plug body 1 to points adjacent the heads of pins 8, 9, 10 projecting through said body into an annular channel 2 therein, are clamped on to the pin heads by a ring-shaped projection 6 on a cap 5 which screws into the internally-threaded outer wall 4 of the channel 2. An annular rib 15a on the projection 6 forces the wires into a groove 15 passing across the pin heads. A similar construction for a twopin plug is also described. According to the Provisional Specification, the body may be formed with an external screw-thread engaged by a clamping ring which presses the wires against abutments at their points of entry into the passages so as to take any strain thereon.
Patent GB-565817-A (GB)
Title: Improvements in grinding machines
IPC: B24B3/08
Filed: 1943-03-19
Abstract: 565,817. Grinding milling-cutters &c. COTTON, Ltd., W., LYNAM, J. E., and BRAIN, H. W. March 19, 1943, No. 4474. [Class 60] A grinding-machine for grinding the profile of a work-piece, for example, a milling-cutter or the like, by copying a pattern or template, and in which the work-holder and grinding- head are freely movable relatively for following the outline of the pattern, comprises a member 10, supporting the work 11 and a pattern 12, movable in a horizontal plane parallel to the axis of the grinding-wheel 13, which is mounted in a stationary head 14, to which a pattern follower 15 is attached. The machine has a table 16 having therein two parallel grooves or tracks 17b forming ball races, and parallel or at right angles to the axis of the grinding-wheel 13. Above the table is an intermediate member 18, having on its underside tracks 17a between which and the tracks 17b are located ball bearings 117 in a cage 19, and on the upper surface of the member 18 are two more parallel tracks 20b at right angles to the tracks 17a, 17b, co-operating with tracks 20a formed in the undersurface of the member 10 ; balls 120 in a cage 21 are located in the tracks 20a, 20b. Stop means are provided for limiting the movement of the members 18, 10, comprising slots 23, 25 in the members 18, 10, respectively, engaging pins 24, 26 in the table 16 and member 18 respectively, the pins having heads to prevent lifting of the members 18, 10. The member 10 has brackets 22 between which the work 11 is supported and indexing means 27, 28 is provided ; the pattern plate 12 is supported by cross-slides, cut being applied by a feed knob 31 ; the follower 15 is of the same radius in cross-section as the periphery of the grinding-wheel 13, and is located immediately below the grinding-point. Instead of ball bearings, roller bearings or a combination of ball and roller bearings may be employed. Specification 523,086 is referred to.
Patent GB-250713-A (GB)
Title: Improvements in electric signalling systems employing carrier waves
IPC: H03C1/00
Filed: 1925-02-18
Abstract: 250,713. Western Electric Co., Ltd., (Western Electric Co., Inc.). Feb. 18, 1925. High-frequency machines; inductor-alternators; reciprocating and oscillating machines.-Carrier waves are produced by mechanically varying the reluctance of a magnetic circuit and are modulated by varying the magnetomotive force. The outputs from several such systems can be combined in such a way that certain components of the resulting complex oscillations are cancelled out. Thus, a self-maintained tuning fork having the carrier frequency may be so positioned that its prongs complete two magnetic circuits the reluctances of which consequently vary at the carrier frequency, while the current which gives M.M.F. to the magnetic circuits is varied by a microphone, a switch being provided so that the M.M.F.'s may be applied in similar or in opposite senses, at will, to the two magnetic circuits. Output is taken from coils linked with these circuits and connected in series to the line either in alliance or in opposition according to the setting of a further switch. In another embodiment a star-shaped rotor 22 is driven so as to vary the reluctance of the circuits A, B at the carrier frequency. Polarizing current is supplied to the coils D, D and modulating current to the coils E, E, while the output current is taken from the coils F, F to line. Switches are provided as shown so that the coils of each pair can be connected either in alliance or in opposition. In modifications, the rotor may have an odd number of spokes, or a larger number of magnetic circuits may be employed.
Patent GB-633286-A (GB)
Title: Bearings for shafts
IPC: F16C32/06
Filed: 1948-02-16
Abstract: 633,286. Fluid bearings. YATES, H. G., and PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. Feb. 16, 1948, No. 4493. [Class 12 (i)] In a fluid bearing, a bored socket f in the end of a shaft g accommodates a rigid spigotmember b, mounted in one end of a casing a, having a plurality of shallow recesses c in the peripheral surface thereof which are supplied with pressure - fluid through passages d communicating with a common duct e. Fluid leaks through the space h to the space i within the casing. The invention is particularly applied to a steam turbine and the fluid may be steam supplied from a separate boiler.
Patent GB-274527-A (GB)
Title: The manufacture of vat dyestuffs of the 2-thionaphthene-2-indolindigo series
IPC: C09B7/06
Filed: 1926-02-17
Abstract: 274,527. Carpmael, W., (I. G. Farbenindustrie Akt.-Ges.). Feb. 17, 1926. Thioindigoid dyes.--Vat dyestuffs of the 2- thionaphthene-2-indolindigo series are produced by condensing oxythionaphthenes of the general formula (where X=balogen or alkyl, Y=hydrogen, halogen or alkyl, and Z=hydrogen or a monovalent radicle but not halogen) with isatin-alpha-derivatives of the general formula (where R is an aryl residue and R, a halogen or an arylido group). 5 : 7-Dihalogenisatin-alphahalides are particularly suitable, though similar dyestuffs can be obtained by using non-halogenated isatin-alpha-derivatives and subsequently halogenizing the products. The products dye cotton and wool from the vat in fast blue to violet shades. According to the examples, dyestuffs are obtained from the following components : 5: 7-dichlor- or 5 : 6 : 7-triohlor-oxythionaphthene and 5 : 7-dibromisatinchloride; 5: 6 : 7-trichloroxythionaphthene and isatin-alphaanilide followed by bromination in sulphuric acid; 5-chlor-7-methyl-, 5-methy-7-chlor-, or 5: 7- dichlor-6-methyl-oxythionaphthene and 5: 7- dichlor- or 5: 7-dibromisatin chloride or arylide, or 6-chlor-7-methylisatinarylide ; 4-ethyl-5 : 7- dichloroxythionaphthene and 4 : 7-dimethvl-5- chloroxythionaphthene are also specified as parent materials. The condensation of 2: 4-dimethyloxythionaphthene (5 : 7 - dimethyloxythionaphthene) with halogenized derivatives of alpha- or #- naphthisatins is excluded. Oxythionaphthenes. - The above mentioned oxythionaphthenes can be produced from the corresponding substituted arylamines by converting into the corresponding arylthioglycollic acids and treating these with chlorsulphonic acid, or, after conversion into the acid chlorides, with condensing agents such as aluminium chloride or phosphorus pentoxide. 5:6: 7-Trichloroxythionaphthene may also be prepared from 1-amino-3: 5-dichlorbenzene or 1- amino-3 : 4 : 5-trichlorbenzene according to the series of reactions described in Specifications 17417/14 and 18292/14: 4 methyl-5 : 6 : 7- trichloroxythionaphthene may also be obtained from 1-methyl-2-amino-4: 6-dichlorbenzene or 1-methyl-2-amino-4: 5: 6-tricblorbenzene by the same methods. 6-Chlor-7-methylisatin-alpha-arylides may be obtained from 1-methyl-2-amino-6-chlorbenzene by the method of Sandmeyer described in Specification 15497/99. Chlortoluidines. - 1-methyl-2-amino-4: 5: 6 trichlorbenzene may be made by nitrating 3 : 4- dichlor-1-methylbenzene, further chlorinating the nitro compound, and reducing; the acetyl derivative is mentioned. 1-Methyl-3-amino- 4 : 5 : 6-trichlorbenzene may be made by nitrating 1-methyl-4 : 5 : 6-trichlorbenzene, whereby a mixture of the 2-and 3-nitro compounds is produced, separating the more volatile 3-nitro compound by fractional distillation, and reducing. 1-Ethyl-3-amino-4: 6-dichlorbenzene is obtained by further chlorinating 4-chlorethylbenzene, isolating the 4 : 6-dichlor compound by distillation, nitrating, and reducing.
Patent GB-982548-A (GB)
Title: Improvements in or relating to oil filters
IPC: B01D35/153
Filed: 1962-02-06
Abstract: 982,548. Filters for liquids. A. KNECHT. Feb. 6, 1962 [March 1, 1961], No. 4618/62. Heading BID. A lubricating oil filter 1, which is detachably mounted on the cylinder block of an internal combustion engine, comprises a flanged housing cover 9, which has bores 19 for the passage of oil and incorporates a threaded sleeve 10, a filter insert 3 of, e.g., radially folded paper, and a housing receptacle 8, the circumferential surface of the housing cover having closure lugs 16 provided thereon to form a bayonet connection with slots 21 arranged below hollow projecting portions 22 in an upper wall member 20 of the housing receptacle. A sealing washer 18 is retained below the closure lugs in an annular groove 17 in the housing cover and by the interior face of the upper wall member. The filter insert has a lower cover disc 4 and an upper annular cover disc 5, on which a resilient perforated annular membrane disc 7, which abuts against the housing cover, is fitted. A flanged head piece 2 is interposed between the cylinder block and the housing cover, and a sealing washer 14 is provided in an annular groove 13 in the upper end face 12 of the housing cover. In a modification, Fig. 3 (not shown), the housing cover has a stepped, threaded, central boss for screwing directly on to the cylinder block and a stepped bore for a non-return ball outlet valve.
Patent GB-511198-A (GB)
Title: Improvements in or relating to finger guards for sewing machines
IPC: D05B83/00
Filed: 1938-02-15
Abstract: 511,198. Sewing-machines. COLLINSON, R., and COHEN, L. Feb. 15, 1938, No. 4699. [Class 112] A finger-guard associated with the presserfoot 5 comprises a pail of forwardly-projecting members 13 spaced apart for the passage of the needle 11 between them and upwardly turned at their front ends, one or both of the members having an integral skeleton side shield in the form of comparatively thin ribs of which one (15) forms an intermediate support for a top cross rib 14 extending from front to rear of the guard. The guard is preferably secured to the presser-bar 3 as shown by an integral clip 2 engaged by the screw 4 which secures the presser-foot 5. The ribs of the side shield may vary'in shape and number.
Patent GB-898760-A (GB)
Title: Apparatus for the application of connection slips to filter tip cigarette groups
Inventor: MUELLER HORST
IPC: A24C5/47
Filed: 1960-02-11
Abstract: 898,760. Making filter-tip cigarettes. TABAKUND INDUSTRIEMASCHINEN DRESDEN VEB. Feb. 11, 1960, No. 4810/60. Class 130. Groups 2, Fig. 1, each comprising a doublelength filter tip flanked by two cigarettes, and having stuck thereto glued connector bands 5, are sucked from troughs 4 of a suction conveyer 1 into troughs 20 of a drum 12, the troughs 20 being pivotable first in one direction to cause leaf springs 28 to wipe down one flap of the bands 5 and then in the other direction to cause wiping down of the other flap by an endless band 35 running without slip on the drum 12. The wrapped groups pass heaters 38 and are subdivided by a cutter 39 before being guided on to a conveyer 40. Suction is applied to the troughs 20 at appropriate times via ducts 25, 26, Fig. 3, a part-annular duct 27, rubber pipes 23 and apertures 21. The troughs 20 are pivoted by ball-bearing rollers 32 running in a stationary cam track and connected to the troughs by arms 34.
Patent GB-209619-A (GB)
Title: Improvements in and relating to refuse destructor furnaces
IPC: F23G5/00
Filed: 1923-02-20
Abstract: 209,619. Lindsay, W. Feb. 20, 1923. Refuse-consuming furnaces. - Refuse or other low-grade fuel is consumed in a furnace furnished with a helical hearth, the material being fed in at the top of the furnace, dried in the upper part of the furnace and consumed in the lower part. As shown, a spiral hearth F<2> surrounding a central flue D<2> receives the material from a hopper B through a valves B<3>. Air under pressure is forced into a tank E<2> surrounding the furnace and passes through openings E<4> through checkerwork F<1> and escapes through jets E<6> in the hearth, agitating the material and causing it to gravitate towards the bottom of the furnace. The gases pass along the spiral chamber G to the top of the furnace and down the flue D<2> to an underground flue D<3>. Relief vents are provided at D Clinkering holes A<5> are provided in the top of the furnace. The ash passes into a water-seal H. The hearth may comprise one or more spirals. In a modification, the checkerwork F<1> is omitted and the blast is controlled by a valve so that it may be directed to the top zone only for starting; also the take-off flue is at the top of the furnace. Arrangements of a battery of furnaces are also described. The air supply may be regulated to ensure complete combustion, the resulting gases being used for steam raising; or may be curtailed or replaced by steam to produce combustible gases.
Patent GB-161041-A (GB)
Title: Improvements in or relating to swords and the like
IPC: F41B13/02
Filed: 1920-02-17
Abstract: 161,041. Staiti, A. Feb. 17, 1920. Swords; daggers.-Consists in a sword, dagger, &c. having a handle shaped to ensure a definite mode and position of grasping, and a blade shaped and mounted so that. when the handle is grasped the point of the blade and the forearm of the user lie in the same straight line and the cutting edges lie in the plane in which the forearm swings about the elbow joint. In the construction shown, the handle is formed with a number of projections a, b, d which ensure a definite position of the hand. A cup-shaped guard e protects the hand. The blade H has two cutting edges and a point, and is secured to the handle by a screwed tang.
Patent GB-725440-A (GB)
Title: Improvements in and relating to field or portable kitchens
IPC: F24C5/20
Filed: 1953-02-23
Abstract: 725,440. Cooking-stoves. SOC. ANON. DE REPRESENTATION GENERALE POUR L'INDUSTRIE ET LE COMMERCE, EN ABREGE SARICOM. Feb. 23, 1953 [Feb. 23, 1952], No. 5023/53. Class 126 [Also in Group VI] A field or transportable kitchen comprises a casing b, with a foot-board m running round it, mounted on wheels and enclosing cooking units individually heated by means of burners e and a fuel tank g having pipes f, with control means, feeding liquid fuel, e.g. petrol, to the burners. Box casing b containing four pots c and an oven d each heated by a pair of burners e is mounted on a wheeled chassis a. The pipes f are controlled by cocks with handles h grouped on a distribution panel i and each pipe supplies two burners e. A further regulating cock is provided at each burner. Fittings I support the heads of the burners.