baber/WOPTO huggingface dataset:
Patent GB-491743-A (GB)
Title: Improvements in and relating to direct current dynamo electric machines
IPC: H02K23/46
Filed: 1937-04-21
Abstract: 491,743. Exciting dynamo-electric machines. JUHLIN, G. A., HILL, E. P., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. April 21, 1937, Nos. 11422/37, 16056/37, and 1530/38. [Class 35] A machine has an auxiliary wound field structure disposed between the armature'and the main field structure with poles or pole faces magnetically in series with the main poles but separated therefrom by high reluctance gaps or members, the auxiliary poles or pole faces being magnetically bridged by members which readily saturate extending from pole to pole around the machine. In the forms shown, the auxiliary poles 4 are bridged by shunts 3, have insets of cobalt steel 11 and are separated from the main poles 1 by air gaps 7 or by non-magnetic material. In Fig. 5, the auxiliary pole has a main shunt winding 22 assisted by a shunt winding 26 in series with a resistance 27 and opposed by a winding 25 in series with the separately excited winding 8 on the main pole 1. In Fig. 4 the machine is a sub exciter 19 feeding the winding 18 of an exciter 16 of a main machine 14 across which is shunted a winding 8c on the main pole of machine 19, the main pole also having shunt and series coils 8a, 8d respectively also a coil 8 across a resistance 22 in the load circuit of the machine 14 while the auxiliary field member has shunt coils 10 which might alternatively be separatedly excited or connected in series with the coil 8a. The coils 8, 8a and 8d assist one another and are assisted or opposed by coil 8c. In the case of a Ward- Leonard equipment, the exciter or sub-exciter may increase the motor excitation and decrease that of the generator when the load current increases. The coils on the auxiliary system, which may be on the poles 4 or bridges 3 or on both may be reversed, open or short-circuited at will and when separately excited may be in series with a rectifier to ensure uni-directional excitation. The resistance 27 in series with winding 26 has a non-linear voltage-resistance characteristic.
Patent GB-623315-A (GB)
Title: Improvements in or relating to jettisonable cabin enclosures for aircraft
IPC: B64C1/32
Filed: 1947-04-29
Abstract: 623,315. Jettisonable cabin enclosures for aircraft. BROWN, F. G. J. April 29, 1947, No. 11439. [Class 4] A cockpit hood 11 is slidable along rails 1, which turn through a predetermined angle about the pivots 2, connected to the aircraft, prior to jettison release. Rotation of the squared section 4 of the pivot shaft and arm 7, by the rails, operates the switch 8. A cartridge 9 is thereby fired and pressure on piston 6 withdraws the square section 4 and releases the rails &c. In an alternative arrangement (not shown), a third parallel rail carries a single releaseable pivot. The hood may be locked against sliding during the pivotal release movement, by a spring-pressed catch 14, Fig. 5, which is held inoperative in the normal position of the hood by levers 16 on the rail engaged by fixed stops 18. In an aircraft employing a power-operated jack for raising and lowering the cabin enclosure, the electrical firing circuit is broken at a further switch (not shown) rendering inoperative the jettison release device, when the aircraft is not in flight. Upon jettison release, the wind load on the partly raised hood causes shearing of a pin and allows actuation of the switch.
Patent GB-927530-A (GB)
Title: Annealed zinc-base alloys
IPC: C22C18/02
Filed: 1962-03-26
Abstract: A zinc base alloy comprises .Zn. .Cu.0.51-0.96 .Ti.0.07-0.094 These alloys are annealed at 480 DEG  F. for 1 hour
Patent GB-270702-A (GB)
Title: Improvements in the manufacture and production of pulverulent fuel for internal combustion engines
IPC: C10L5/00
Filed: 1927-05-02
Abstract: 270,702. I. G. Farbenindustrie Akt.- Ges. May 7, 1926, [Convention date]. Composition fuel. - Pulverulent natural fuel, e.g. lignite dust, is improved for use in internalcombustion engines by charging with gaseous, vaporous or atomized liquid fuels. Vapours of benzines, benzolene, alcohols, in undiluted state or in containing gases, or other adsorbable gases and vapours of a fuel nature, such as illuminating gas, low temperature carbonization gas, or cracking gases, may be employed. The gas current may be passed against the fuel powder as it descends a tower or inclined rotating pipe, or the fuel may be passed through a mist of atomized liquid fuel. 1-2 per cent of adsorbed vapours are sufficient for improving the fuel. Specification 184,250 is referred to.
Patent GB-562090-A (GB)
Title: Improvements in aircraft undercarriages
IPC: B64C25/00
Filed: 1942-08-19
Abstract: 562,090. Aircraft undercarriages. KOVAC, E. Aug. 19, 19442, No. 11662. [Class 4] The lower end of an undercarriage leg c, which may include a shockabsorber, is pivoted to one end of a crank arm b freely suspended from a landing wheel hub. There may be a single leg to one side of each wheel, as shown, or two legs, one on each side, or there may be a single leg between a pair of wheels.
Patent GB-932836-A (GB)
Title: Rotor blade retention means
IPC: B64C27/39
Filed: 1962-03-27
Abstract: 932,836. Helicopter rotors; variable pitch propellers. KAMAN AIRCRAFT CORPORATION. March 27, 1962 [April 27, 1961], No. 11711/62. Classes 4 and 114. A helicopter lifting or anti-torque rotor or an aircraft propeller comprises a blade connected to a hub so as to permit lead-lag movements of the blade about an axis which moves relative to the hub so that to each position of the blade within its range of lead-lag movement, there corresponds a different location of the lead-lag axis relative to the hub. Fig. 5 shows a blade 26 attached to an arm 24 on a hub 20 by a barrelshaped part 48 passing through a cylindrical aperture 46 in the arm. When the blade lags, for example, as shown, its effective lag-lead pivot moves off the centre line 84 to the point A<SP>1</SP>. Part 48 may include a flapping hinge, Fig. 3 (not shown), sealing means for the lubricant of which tend to return the blade to its zero lead-lag position. A centrifugally operated stop prevents flapping when the rotor is stationary, in an unspecified manner. Blade pitch change bearings are provided outboard of the blade root 28. Part 48, which need not be symmetrical about line 84 in its neutral position, is an exact fit in aperture 46, the centrifugal force arising on rotation deforming the aperture to allow lead-lag movements of the blade. Other forms for part 48 and aperture 46, which allow line contact rather than point contact, are described.
Patent GB-847432-A (GB)
Title: Machine for producing composite wire structures
Inventor: THOMPSON WILLIAM
IPC: B21F27/16
Filed: 1958-04-15
Abstract: 847,432. Metallic fabrics. SLUMBERLAND Ltd. April 15, 1959 [April 15, 1958], No. 11895/58. Class 45. [Also in Groups XIV and XXII] An apparatus for the manufacture of a material comprising longitudinally extending flexible cords 94 linked by transversely extending wires 95 which pierce the intermediate cords and are looped round the marginal cords. The apparatus comprises a plurality of similar guide units 25 flanked by looping units and all mounted on a stand 20. Each guide unit, Fig. 5, comprises a body which has a horizontal square section channel 26 machined in its front face. The wire runs in this channel and is retained by a shutter 27, which can be moved clear of the channel by a cam-operated lever 31. The wire is driven through the channel by a pair of feed rollers 39, 40, Fig. 13, which are continuously driven from a gearbox 37. The rollers are normally held apart by a spring 48, but the lower roller can be moved to grip the wire between both rollers by a cam-operated arm 44. There is also a cam-operated brake 70, Fig. 9, which prevents movement of the wire when it is released by the feed rollers. Each guide unit has a groove 36 machined in each side, so that each pair of adjacent units between them define a guide groove for a cord 94. The guide for each of the marginal cords is formed by a looping unit which comprises a hollow shaft 52 through which the cord passes and which has a flange 53 at its forward end. The flange has a shoulder 54 which co-operates with a shearing block, formed by the adjacent end of the wire guide 69, to cut the wire at each end of the apparatus when the shaft 52 is rotated. This rotation is produced by a reciprocating rack, driven by a barrel cam 65, which engages a pinion 56 mounted on the shaft 52. On continued rotation of the shaft, after shearing the wire the shoulder 54 loops it round the marginal cord as shown at 96 in Fig. 4. A strip of hessian 97 can also be incorporated in the material.
Patent GB-1269746-A (GB)
Title: Improvements in or relating to connecting devices for electrical motors
Inventor: CSAKI JOACHIM
IPC: H02K5/14
Filed: 1970-03-12
Abstract: 1,269,746. Brushgear for dynamo-electric machines. J. CSAKI [trading as ACKERMANN & SCHMITT K.G.]. 12 March, 1970 [12 March, 1969], No. 11924/70. Heading H2A. The brushes 14 of an electric motor are connected to the field windings 4, 5, through contacts 29 mounted on an insulating carrier 25 secured to the stator core 6. The carrier-comprises a ring portion 26 having two projections 27 which are either adhesively bonded to the core or are held therein by their own resilience. The contacts 29 are resilient spring contacts best depicted in Fig. 5 (not shown) which engage conductive brush holders 15 and are connected, e.g. by welding or soldering, to one end, 22 or 24, of a respective field winding. The ring portion also includes two sleeves 31 for receiving end conductors, e.g. 23, of the field windings, so as to guide the end conductors through openings 18 in the motor casing on assembly of the motor. In a modification, Fig. 6 (not shown), the ring portion has a single recess (36) for receiving the end conductors and in a further modification, Fig. 7 (not shown), the wall of the recess is formed with a slit (38) to permit insertion of the end conductors. The motor casing includes an outer metal jacket 2 and a plastics lining 3.
Patent GB-769749-A (GB)
Title: Improvements in or relating to the manufacture of coloured photographic layers
IPC: G03C1/83
Filed: 1955-04-26
Abstract: 4 : 41 - Dimethoxy - diphenyl - pyridinemethane is prepared by adding a mixture of acetic acid and conc. sulphuric acid to a cooled mixture of pyridine-4-aldehyde and anisole.  The product is heated in acetic acid with PbO2 to give 4 : 41 - dimethoxy - diphenyl - pyridinecarbinol.  The leuco base and carbinol are similarly prepared using benzothiazole-2-aldehyde and benzselenazole-2-aldehyde.  10 - Methyl - phenothiazine - 5 - dioxide is prepared by refluxing 10-methyl-phenothiazine with H2O2 in acetic acid.ALSO:The preparations of certain dyes which fall within the following formula are described:- <FORM:0769749/IV(b)/1> wherein A is a nitrogen and/or sulphurcontaining heterocyclic nucleus, B and B1 are alkoxy or substituted amino groups or B1 may be hydrogen, R and R1 are hydrogen or R1 is carboxy and X is an anion such as chloride.  Those wherein A is the residue of a phenothiazine, N-acetylphenothiazine, N-methyl-phenothiazine, N-methyl-phenothiazine-5-dioxide and carbazole nucleus, are prepared by reacting the heterocyclic compound (AH) with the appropriately substituted benzophenone, such as p-dimethylamino-o1-carboxy-; p-p1-dimethoxy-; 4-methoxy-; p-dimethylamino- and 4-dimethylamino-41-methoxy-benzophenones in the presence of POCL3 or PCl5 + P2O5.  Those wherein A is te residue of a pyridine or phenothiazine nucleus and B and B1 are the same are prepared by melting the 4:41-dimethoxy-diphenyl-pyridine-(or phenothiazine)-carbinol with benzoic acid and adding 2-chloro-5-aminobenzoic acid, or mono-ethanolamine, or p-aminophenol, or p-amino-salicylic acid wherein the amino group reacts with both the methoxy groups of the carbinol.  The dyes wherein A is benzthiazole or benzselenazole and B and B1 are methoxy (R and R1=H) are prepared by reacting the heterocyclic 2-aldehyde, with anisol in acetic acid and sulphuric acid, oxidizing the leuco-base with PbO2 and treating the carbinol formed with HCl. Thiophene-malachite green (A=thiophene) is referred to.
Patent GB-607923-A (GB)
Title: Improvements in and relating to light reflectors and deflectors
IPC: F21V8/00
Filed: 1946-04-18
Abstract: 607,923. Tubular electric lamps. SPENCER, J. C. April 18, 1946, No. 11995. [Classes 75(ii) and 75(iv)] A lighting fixture comprises a tubular electric lamp 10 along the sides of which are arranged curved sections A, B of glass, methyl methacrylate or other transparent material to deflect the rays of light from the lamp and cause them to issue from the edges of the sections. The lamp may be a fluorescent tube and the curved sections A, B may be composed of a number of superposed laminations 11, 12, 13 so as to increase the number of light rays piped along the sections by total internal reflection, the laminations being held together by a metal strip 14 embracing both sections A, B.
Patent GB-552083-A (GB)
Title: Improvements in and relating to the preparation of esters of hydroxyacetic acid
IPC: C07C69/675
Filed: 1941-09-19
Abstract: 552,083. Hydroxyacetic acid esters. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co., E. I.). Sept. 19, 1941, No. 12030. [Class 2 (iii)] In the preparation of esters of hydroxyacetic acid with monohydric alcohols, the acid is dehydrated until it gives a calculated acidity of 104-113 per cent. before it is used for the esterification. Examples of the latter are : methanol, ethanol, n and iso-propane, n- and isobutanol, octanol, alcohols derived from olefines and those obtained by the hydrogenation of oxides of carbon, oleyl alcohol and allylalcohol. In. examples, methyl and isobutyl hydroxyacetates are prepared. According to the Provisional Specification, benzyl alcohol, glycol and glycerine may be used in the esterification. Specification 8103/40, as open to inspection under Sect. 91, is referred to.
Patent GB-501386-A (GB)
Title: Improved gas-operated reloader for fire-arms
IPC: F41A5/26
Filed: 1938-04-21
Abstract: 501,386. Automatic firearms. BRONDBY, F. N. April 21, 1938, No. 12032. Convention date, April 28, 1937. [Class 119] A gas-operated reloading mechanism for automatic firearms comprises, as a combination, a channel 3 entering the barrel 1 at an acute angle with the part of the barrel axis to the rear of the channel, and a gas cylinder 4 of such comparatively large volume that the barrel is substantially exhausted of combustion products by the ejector action of the gases flowing back from the gas cylinder through the muzzle. A suitable volume for the gas cylinder is stated to be approximately one half the volume of the barrel.
Patent GB-238303-A (GB)
Title: A method of, and apparatus for, treating liquids with gases
IPC: B01J8/22
Filed: 1924-05-16
Abstract: 238,303. Steen, T. May 16, 1924. Air, treating with liquids.-To effect intimate contact between a gas and a liquid the gas is introduced into the liquid in two steams, one of which imparts circulation to the liquid, whilst the other traverses the liquid in a direction contrary to that of the circulation. A double-acting pump 10 forces gas into the autoclave 1 through a pipe 9 which opens below a tube 4 and also through a pipe 11 to a perforated tubular ring 8. The upper end of the open-ended tube 4 is fitted with a receptacle 6 having a perforated base, so that the liquid which is forced up the tube 4 descends in fine streams and meets the gas ascending from the ring 8. Unabsorbed gas returns to the pump by the pipe 12 and is redelivered to the autoclave. Fresh gas may be supplied to the pump or to the autoclave if desired. The rate of supply may exceed the rate of absorption, in which case the process is carried out with gradually increasing pressure.
Patent GB-628896-A (GB)
Title: Folding vehicle step
IPC: B60R3/02
Filed: 1947-05-05
Abstract: 628,896. Vehicle steps. McCOMBS, V. May 5, 1947, No. 12117. [Class 108 (i)] A foldable vehicle step comprises an upper step unit C having integral sides 5, hingedly attached at their lower rear portion to the lower ends of depending brackets A, secured to the vehicle so as to be able to swing said upper step unit rearwardly about a substantially horizontal axis from an extended operative position to a retracted inoperative position and a lower step unit D having integral sides 10 hingedly attached at their upper end portion to the lower front portion of the sides of the upper step unit C, and adapted to swing upwardly thereon into nested relation with the upper step unit. Flanges 8 on the sides 5 of the upper step unit limit the forward movement of this unit whilst transverse bar 14 limits the downward movement of step unit D. The bar 14 also limits the rearward movement of the step in its retracted position.
Patent GB-109079-A (GB)
Title: New Process of Manufacture of Compound Fertilizers.
Inventor: DEGUIDE CAMILLE
IPC: C05B11/08
Filed: 1916-08-28
Abstract: 109,079. Deguide, C. Aug. 28, 1916. Manures.-Insoluble phosphate, such as mineral phosphate or bone, is treated with nitre-cake and blood, urine, or waste liquors of wool-washing sufficient to dissolve the nitre-cake. The reaction mixture is left to dry in a heap. According to the Provisional Specification, the blood &c. may be replaced by liquids containing or not fertilizing- materials, such as ammoniacal water, potash water, and the liquor obtained by treating ashes with water; and there may be incorporated in the mass before or after the reaction, nitrates, sulphates, ammonia, potash salts, &c.
Patent GB-1354898-A (GB)
Title: Frame counter for cameras
IPC: G03B17/42
Filed: 1971-04-29
Abstract: 1354898 Film counters NIPPON KOGAKU KK 29 April 1971 [9 June 1970] 12144/71 Heading G2A A frame counter has a dial provided with two different scales, one for use with a longer length of thinner film and the other for use with a shorter length of thicker film. Thus in a magazine containing film of 0.07 mm thickness nearly twice as many frames would be available than with film of the more normal 0.14 mm thickness. As shown, the wind lever 1, by way of plates 4 and 6, a three-blade cam 9 and integral gear 10, idler gears 11, 12 and a sprocket gear 13, actuates the shaft 15 and hence a film wind sprocket. At the same time the rotation is also transmitted from gear 12 to gear 16, so rotating the film feed spool. A plate 38 is slidably mounted on a body part 43 of the camera, and has portions 38a, 38b, and 38c for engaging other elements of the camera mechanism. The frame scale dial 30 is marked with two scales 30a and 30b, for normal and thin films respectively, which scales are visible through respective windows 33, 34. The divisions of the two scales correspond to equal angles of rotation of the dial, and each division of scale 30a represents one frame of the ordinary film, and each division of scale 30b represents two frames of the thin film. A change-over lever (39), Fig.3, (not shown) can be set to one of two index marks (40a, 40b) to change the mechanism from "ordinary film" to "thin film" operation, and at the same time moves a cover plate 35 which leaves only one or the other window 33, 34 uncovered. In the "ordinary film" position the part 38a of slider plate 38 engages an L-shaped lever 46 having a pin 50 at one end. Lever 46 is thus moved into a position in which a pawl 22 can feed a ratchet 23 which actuates the frame counter. In the "thin film" position, the part 38a is disengaged from lever 46, which is then biased clockwise by a spring, and hence pin 50 forces pawl 22 to disengage from ratchet 23. On the other hand the other end 46b of lever 40 now engages a rotary cam (51a), Fig. 12, (not shown) formed as part of a cam gear 51 (see also) Fig. 10, (not shown). The cam is so shaped that as the cam gear 51 rotates pawl 22 is intermittently engaged and disengaged with ratchet 23. The dial 30 is thus advanced by one division in response to each two-frame feed of the thin film.
Patent GB-1437613-A (GB)
Title: Navigational radio transponder means
Inventor: ISBISTER E
IPC: C07F15/02
Filed: 1973-05-23
Abstract: 1437613 Radio transponders SPERRY RAND CORP 23 May 1973 [26 June 1972] 12267/74 Divided out of 1437611 Heading H4L An interrogator/transponder (Figs. 2a, 2b, 2c, not shown) for marine signalling identification or range finding is operable in different modes and employs a carrier pulse modulated by a binary message Figs. 1a to 1d, not shown, which identifies the calling station and the operating mode and which is coded/decoded by a delay line (100 to 114). The description is identical with that of the parent Specification 1,437,611; and the claims relate to a transponder, in particular the simplified transponder (Figs. 8, 9, not shown) designed for shore-beacon use.
Patent GB-592663-A (GB)
Title: Improvements in or relating to cavity wall structures
IPC: E04B2/56
Filed: 1944-06-28
Abstract: 592,663. Walls; builtling-slabs. AIREY, Sir E. June 28, 1944, Nos. 12292 and 15037. [Classes 20(iii), 20(iv) and 87(i)] A cavity wall comprises concrete uprights with a co-extensive tubular reinforcement, against which on the outer faces slabs are held by wire ties each connected from an anchorage on a slab to or around the adjacent upright, and on the inner faces an inner wall structure is erected. The supports shown in Fig. 1 comprise concrete posts reinforced by a metal tubular core 5, and if in sections a short tube 6 or solid member may extend across the joints inside the tubes 5, transverse bolts 7, which may also secure joists 8, being passed therethrough. Fig. 3 shows a wall construction wherein the slabs 3 taper from the lower edge which forms an overlap above each horizontal joint, and have rebated joints grouted at 28, waterproofed strips being inserted at 37; the slabs are held in place by wire ties 9 tensioned as described in Specification 592,702. Corner slabs 3c may be used. The supports 2 have aluminium foil 30 secured to battens 24 thereon, prefabricated boards 32 being spaced therefrom by horizontal battens 31. The support 2c forms a window mullion.
Patent GB-351149-A (GB)
Title: Improvements in cans or the like containers
Filed: 1930-04-22
Abstract: 351,149. Cans &c. CONTINENTAL CAN CO., Inc., 100, East 42nd Street, New York, U.S.A.-(Assignees of Kronquest, A. L. : Syracuse, New York, U.S.A.) April 22, 1930, No. 12295. Convention date, April 20, 1929. [Class 66.] A can &c. is fitted with a collar 9, Fig. 1, the upper portion of which is inset from the can wall and rolled inwardly at 11 to afford a seating for the recessed end 2 when detached by removal of the rip-strip 8 and inverted. The inset portion of the collar may be provided by doubling the lower edge 10 as in Fig. 1 or by forming an outset band 12, Fig. 3, or a series of panels 12b, Fig. 4, on a collar of single thickness.