baber/WOPTO huggingface dataset:
Patent GB-626439-A (GB)
Title: Improvements relating to dynamo-electric machines
IPC: H02K3/493
Filed: 1947-08-28
Abstract: 626,439. Dynamo-electric machines. FROST & CO., Ltd., H., and PERRIGO, A. E. B. Aug. 28, 1947, No. 23795. [Class 35] A one-piece sheet-metal magnetic slot bridge for partly closing open slots in dynamo-electric machines, is fitted - to at least one of each adjacent pair of teeth, a longitudinal air-gap, unbridged by mechanical means, being left in the transverse magnetic flux leakage path between each pair of teeth. In one form, Fig. 2, each tooth 2 has a strip 4 in contact with its slot face and secured by bent-up clips 7 gripping the ends of the teeth, a flange. 5 extending partly across the slot. In a modification, Fig. 4, a pair of strips 9 are forced into a radial slot 8 in the top of the tooth, the circumferential parts 10 being apertured at 11 to accommodate each side of the tooth. In a further modification, Fig. 10, the plates 19 have T-shaped ends 21 which cross over one another and have lugs 22 engaging pockets in grooves 23 in the end plates 24. Numerous other forms are described in which the bridges are secured by hooked engagement with lugs or by clip devices attached to the ends of the teeth, or slotted plates are fitted over each tooth and retained by friction. The bridges may be placed on each or on alternate teeth, in which case the bridge extends nearly across the slot.
Patent GB-243851-A (GB)
Title: Improvements in gearing and starting mechanism for motor vehicles
IPC: F02N3/04
Filed: 1924-10-08
Abstract: 243,851. Triumph Cycle Co., Ltd., and Phillips, J. A. Oct. 8, 1924. Turning-gear.-In a combined change-speed gear and kick-starter for a motor-cycle, a lay shaft consisting of a sleeve 19 carrying gears 20, 21 is mounted on bearings 18 on the kick-starter shaft 3, to which it is clutched when the starter pedal 5 is operated. A dog clutch member 8, for engagement with clutch teeth 11 on the sleeve 19, slides on splines on the shaft 3 and is normally held out of clutching engagement, cams 13 on the clutch being hooked behind cams 14 on a fixed ring 15. When the pedal 5 is depressed, the clutch is released and is moved into engagement by a spring 9.
Patent GB-968936-A (GB)
Title: Apparatus for the continuous lixiviation of comminuted, particularly vegetable or animal material
IPC: C13B10/10
Filed: 1962-06-21
Abstract: 968,936. Lixiviating materials by aid of screw conveyers. DE DANSKE SUKBERFABRIKKER A/S. June 21, 1962 [June 29, 1961], No. 23900/62. Heading B8A. Trough 1 is provided with two pairs of intermeshing screws 3, 3a, 4, 4a so that material supplied from shoot 2 may thereby be conveyed upwards to the right against a current of liquid introduced into the top of the trough, the extract formed being discharged at the bottom of the trough. The upper screws are formed conically at 10 to permit the screws to convey material upwards against pivoted flap 8. A heating or cooling duct may pass through the centre of the trough.
Patent GB-392617-A (GB)
Title: Improvements in or relating to heat filters for use in light beams
IPC: G03B21/16
Filed: 1931-08-25
Abstract: 392,617. Optical-projection apparatus. SIMON, L. J., 5, Holmdene Avenue, London, and BROMHAM, F. J. H., 119, Rue Paul de Vigne, Brussels. Aug. 25, 1931. No. 23912. [Class 97 (i).] Apparatus for cooling a light beam comprises a chamber having walls with internal reflecting surfaces upon which the beam, in passing from end to end of the chamber, impinges at a relatively large angle of incidence, means for cooling the inner side, the outer side, or both sides of the walls being provided. As shown, a tapered tube a having an internal reflecting surface is closed by a convex lens f and by a concave lens b having a central, more concave, portion e. Cooling is effected by water which passes into the tube by a pipe h from a tank g, and returns to the tank by way of a pipe i and a cooling apparatus. Alternatively, or in addition, water may circulate between the tank g and a water jacket surrounding the tube a. The tank g may be above the tube a so that the water in the tube is under pressure.
Patent GB-718846-A (GB)
Title: Improvements in or relating to explosion-proof chambers for electrical apparatus
IPC: H01H9/04
Filed: 1952-09-24
Abstract: 718,846. Switch cases. NAAMLOOZE VENNOOTSCHAP FABRIEK VAN ELECTRISCHE APPARATEN VOORHEEN F. HAZEMEIJER & CO. Sept. 24, 1952 [Sept. 25, 1951; Sept. 16. 1952], No. 23977/52. Class 38(5) [Also in Group XXV] An explosion-proof chamber for electrical apparatus, e.g. a snap-action switch, has a cover which after it has been placed in position on the chamber, can be locked thereto by a sliding movement. In one form, Figs. 1, 3 and 4, the cover 2 is hinged at 33 and has headed pins 3 engageable in keyhole slots 4, 5 in the front of the chamber 1a. A bolt 6, threaded in a box 7 on the cover, has two collars 9, 11 arranged to engage on either side of a projection 10 secured to an upper part 1 of the chamber, so that rotation of the bolt causes up-or-down movement of the cover to engage or disengage pins 3 and slots 5. The switch-operating spindle 12a has a shaped end 14 which may be engaged by a corresponding aperture 15 in a part 35 in the box 7, by axial movement of the part 35 to the left, Fig. 4, after the box has been raised to the Fig. 4, or "locked" position. This latter movement is only permitted when the switch  is " off," i.e. when a groove 17 on part 35 is opposite a fixed lug 18. The switch is closed by rotation of part 35 which rotates a bore 13 therein from out of alignment with the bolt 6, which thereby becomes inaccessible so as to prevent removal of the cover whilst the switch is "on". When the switch is " on " the lug 18 rides in a groove 16 in member 35 so as to prevent axial movement of the latter. The pins 3 may be roundheaded, as shown, or may be enlarged only in a direction at right angles to the sliding movement, Fig. 6, and the holes 4 may be formed in a U- shaped frame surrounding and attached to the front of the chamber, Fig. 7, (not shown). Figs. 6 and 8 also show a modification of the switch operating gear wherein the end 14 of the operating spindle 12a is enclosed by a socket 111 having two walls 113, 114, between which can be inserted a cylindrical member 104 when the walls are vertical, i.e. when the switch is " off ". Member 104 is carried by a part 101 pivoted to the cover 2 at 116 and has grooves 106, 105 co-operating with a pin 115 on the wall 114 similarly to lug 18 and grooves 17, 16. Member 104 can only be withdrawn axially from the spindle 12a when a hole 107 therein co-incides with a pin 108 on part 101.
Patent GB-791697-A (GB)
Title: Improvements in and relating to brake parachute attachment gear for aircraft
Inventor: SWALES FRANK
IPC: B64D17/80
Filed: 1955-08-19
Abstract: 791,697. Remote controlled fastenings; hooks. ENGLISH ELECTRIC CO., Ltd. Aug. 17, 1956 [Aug 19, 1955], No. 24030/55. Classes 44 and 89(2) A brake parachute attachment gear is attached by a transverse pin 3, Figs. 1 and 2 to a hook 4 pivoted on the tail of an aircraft, the hook being biased to the release position by resilient means 13 and held in the locked position by a cam 18 which can be operated by remote control to move into a position to release the hook. The hook 4, Figs. 1 and 2 pivoted at 5 to frame members 6, has a roller 9 which engages under a cam 18 pivoted at 16 to the members 6. To release the parachute a solenoid 24 pulls in the core 23 and rod 22 which is pivoted at 21 to the cam, thus disengaging the cam 18 from the roller so that the hook turns clockwise about pivots 5 due to a compression spring 13 and the weight of the parachute. A nose 29 on the hook strikes a buffer 30 to arrest the hook and a rubber pad 12 cushions the rebound, The cam 18 is held in the non-release position by weak springs 20. An extension 38 on the cam extends through an aperture 11 in the fuselage to indicate the position of the attachment gear. A rod 25, carrying a mass 27 which is outside the aircraft, is pivoted at 28 to the fuselage and at 26 to arm 22 to balance the developed loads and the mass of the gear.
Patent GB-1055374-A (GB)
Title: A hat or cap and method of making the same
IPC: A42C1/02
Filed: 1965-06-08
Abstract: A hat or cap has a stiffening foundation made from an extrusion moulded, reticulated, knotless fabric consisting of thermoplastic synthetic threads, preferably polypropylene, which are firmly connected or merge at the intersections.  The crown and brim may consist of one piece shaped by hot pressing.  The foundation may be secured to the hat proper and to a lining by hot pressing, preferably after the shaping of the foundation.
Patent GB-370313-A (GB)
Title: Improvements in and relating to central lubrication of machines and particularly of automobile vehicles
IPC: F16N25/02
Filed: 1931-08-27
Abstract: 370,313. Force-feed lubricating. CHARLIER, A., 32, Boulevard de la Meuse, Jambes lez Namur, Belgium. Aug. 27, 1931, No. 2413S. Convention date, Sept. 9, 1930. [Class 12 (iii).] In a lubricating system wherein lubricant is supplied under pressure in succession'to a number of points to be lubricated by a single operation of a central pump, a cylinder 1 associated with each point, having an inlet 4; an outlet 3 to the next succeeding cylinder, and an outlet 2 to the point to be supplied, contains a spring- pressed hollow piston 5 which has a passage 9 therethrough controlled by a valve 12 to which are secured rods 10, 14 extending loosely through the passage. When oil under pressure enters through the inlet 4, the valve 12 being closed, the piston is raised, discharging oil above the piston through the outlet 2 and uncovering the outlet 3. At the same time, the rod 14 contacts with the upper cylinder head 18, thereby opening the valve 12, and the upper end of the piston seats against the head 18, closing the passage 9. When the pump pressure is relieved, the piston 5 returns to its initial position under the action of the spring 19 and oil passes from below to above the piston, the valve 12 being maintained open by a spring 15 fixed to the rod 10 and in frictional contact with the interior of the piston. At the completion of the return stroke, the rod 10 contacts with the lower cylinder head' 13 and closes the valve. The outlet 3 from the last cylinder of the series is connected to an electric indicating device.
Patent GB-1088125-A (GB)
Title: Improvements in or relating to two-stroke internal combustion engines
IPC: F02B75/02
Filed: 1965-06-08
Abstract: 1,088,125. Cylinders; combustion chambers. INPACO TRUST REG. June 8, 1965 [June 9, 1964], No. 24175/65. Heading F1B. Scavenging air flows from a closed collector chamber 4 through passages 5 parallel to the cylinder axis to radially directed inlet parts. The chamber 4 is fed by a blower. A frustoconical extension 14 of the injector housing 2 extends at t. d. c into a corresponding mouth 15 of the combustion chamber 13. The ports 14, 15 may be provided with grooves. The cylinder liner 1 is located by a shoulder 9 and leakage of coolant is prevented by asbestos cords 9. The exhaust ports 6 are widened above the level of the intake ports.
Patent GB-674049-A (GB)
Title: Power unit and transmission gearing for motor road tractors and like vehicles
Inventor: WATTS LAURENCE DEREK
IPC: B62D49/00
Filed: 1948-09-15
Abstract: 674,049. Motor vehicles. SCAMMELL LO RRIES, Ltd. Sept. 15, 1948, No. 24214/48. Classes 79(i), 79(ii) and 79(iii) A power unit and transmission gear for a motor vehicle consists in the combination of an assembly comprising a water cooled engine adjacent the driver's cab, a clutch, transmission gearing and housings therefor the assembly resembling a T in layout, being pivoted at its forward end to a frame cross member by means of a horizontal pivot member and a metal to rubber bonded bush component forming a bearing for the pivot member, and connected at its other end to leaf springs secured to the frame, a radiator mounted at the back of the cab and on the vehicle frame and flexible means for connecting the radiator to the engine water jacket, air being supplied to the radiator through inlets in the sides or roof of the cab so that the cooling air will be comparatively free from dust. As shown the assembly comprises the water cooled engine 4, the clutch housing 15, a gear box housing 16, a reduction gear housing 17, a differential housing 18 and rear axle housings 19, 19a. The engine drives through the gear box 6 formed of a layshaft 6a and main shaft 6b carrying a pinion 7 a gear 8 on a shaft 9. The shaft 9 drives through a second reduction gear- 'ing 10, 11, the differential 12. The assembly is mounted on the main frame 2 of the vehicle by means of half ellipti- 'cal springs 28 between the axle housings and the frame and at the forward end the assembly is pivotally mounted on a bracket 25 on the frame cross member 26 by means of the pivot member 24 and the bush component having flanged ends. Also carried by the frame is the cab 1. a fuel tank 43. the radiator 30 and a turntable for a trailer (not shown). The radiator is mounted on the cross member 26 and is connected with the engine by flexible hose pipes, the radiator and engine being covered by a hood 32. Air is drawn into the radiator by a draught inducing fan 33 driven by the engine through a grille 36 provided on the side of the cab 1.
Patent GB-263534-A (GB)
Title: Improvements in or relating to machines for measuring the superficial area of sheet materials
IPC: G01B5/26
Filed: 1925-09-29
Abstract: 263,534. Turner Tanning Machinery Co., Ltd., and Schettler. G. A. Sept. 29,1925. Surface areas, computing. -In a Sawyer or other area - measuring machine, the indication by the main pointer 2 is retained for a desired period by means of an auxiliary pointer 1. A lug 10 on the main pointer advances the pointer 1 which is normally held against retrograde movement due to a weight 9 and cord 8, by means of a band brake consisting of an anchored wire 12 enwrapping a drum 13 and attached to a weighted releasing lever 15. The auxiliary pointer may be released manually or semimanually, by a timing cam, or by an automatic control exercised by the presence of the leather to be measured.
Patent GB-771647-A (GB)
Title: Improvements relating to aluminium alkyls as initiators in polymerizing olefins
IPC: B01J31/14
Filed: 1955-08-23
Abstract: Activated aluminium alkyl for use as polymerisation catalysts for olefins are prepared by mixing aluminium trichloride and a lead tetraalkyl with stirring and cooling under anhydrous conditions and an inert atmosphere, the aluminium chloride being in molecular excess, heating the reaction mixture to 80 DEG  to 90 DEG  C. to complete the reaction, heating further to 145 DEG  to 170 DEG  C. to decompose unreacted lead tetra-alkyl and distilling off the aluminium alkyl reaction product.  It is preferred to use 1.1 to 1.6 mols. of aluminium chloride per mol. of lead tetra-alkyl.  The final distillation may be carried out under vacuum if desired, and the distillate may be further fractionated under dry nitrogen.  In an example aluminium trichloride and lead tetraethyl are reacted under dry nitrogen at 0 DEG  C., the mixture heated to 85 DEG  C. for an hour and finally to 165 DEG  to 170 DEG  C.  After cooling, the reaction mixture is distilled under low pressure.ALSO:A catalyst for the polymerization of olefines comprises an aluminium alkyl containing between about 0.02 to 5 per cent of chlorine and of lead.
Patent GB-997945-A (GB)
Title: Improvements in or relating to life-belts and the like inflatable devices
IPC: B63C9/18
Filed: 1961-07-05
Abstract: Carbon dioxide is generated by the action of acetic acid or sodium bicarbonate in order to inflate a lifesaving apparatus. The acid is contained within a first closed container within a second container containing the sodium bicarbonate which is placed within an inflatable part of the apparatus and both containers are of a synthetic plastic material.  The first container is broken by external pressure means so as to generate sufficient carbon dioxide to break the second container at a weakened point and inflate the apparatus.ALSO:A gas generating means positioned within an inflatable lifesaving appliance comprises a first closed container disposed within a second closed container which is placed within an inflatable part of the appliance, both containers being formed of a synthetic plastic material.  The first container is arranged to be broken by external pressure, the second container has a weakened point in the wall and the containers contain different media which, in use, when mixed by the breaking of the first container produce gas in such volume as to break the second container at the weakened point and inflate the device.  The media may be sodium bicarbonate and acetic acid.
Patent GB-1118142-A (GB)
Title: Improvements in rotary radial cylinder reciprocating piston hydraulic motors, hydraulic pumps, air compressors and the like
IPC: F03C1/38
Filed: 1965-06-09
Abstract: 1,118,142. Reciprocating pumps, motors and compressors. K. EICKMANN. June 9, 1965, No.24344/65. Headings F1A and F1N. In a rotary cylinder block radial cylinder hydraulic pump or motor or air-compressor having two axially spaced groups of cylinders 145, 156 fluid-flow is via axial passages 161 from the cylinders and the co-operating valve faces are maintained in close relationship by an axially movable annular member 155 subjected to fluid-pressure in the chambers 160 and 161a. The chambers 160 and 161a are connected to the inlet and outlet passages 135, 136. The inner faces of the valve plates 153, 253 are part-spherical and co-operate with part-spherical cylinder block end-faces. The co-operating faces of the valve plates and cylinder block may be radially plane and the co-operating faces of housing portion 133a and annular member 155 with the valve plates partspherical. Balancing recesses (191a), Fig. 3 (not shown), may be provided in the partspherical valve plate faces.
Patent GB-1248487-A (GB)
Title: Process for the manufacture of condensed aluminium phosphates
IPC: C01B25/38
Filed: 1969-05-13
Abstract: 1,248,487. Aluminium phosphates. FARBWERKE HOECHST A.G. 13 May, 1969 [13 May, 1968], No. 24350/69. Heading C1A. [Also in Division C3] A condensed aluminium phosphate containing P 2 O 5  : Al 2 O 3  in a molar ratio in the range of from 1À1 : 1 to 3 :1 is made by reacting a water-soluble alkali-metal polyphosphate cendensed in the form of a chain or ring with a water-soluble aluminium salt in aqueous solution and subjecting the precipitated condensed aluminium phosphate so obtained to a singlestage heat-treatment at a temperature in the range of from 300‹ to 600‹ C. Preferably the heat treatment is for 1-3 hours. The alkali metal polyphosphate may be, e.g., Na 4 P 2 O 7 , (NaPO 3 ) 3 , (NaPO 3 ) 6 , or Na 6 P 4 O 13 , and the aluminium salt is, e.g., the sulphate or nitrate or potassium aluminium alum. The products may be used as hardeners for cements containing water glass as a binder (see Division C3).
Patent GB-578185-A (GB)
Title: Improvements in speed-control governors
IPC: G05D13/00
Filed: 1934-08-24
Abstract: 578,185. Automatic control, systems for electric motors. RICHARDS, W. J., and STEVENS, G. W. H. Aug. 24,1934, No. 24407. [Class 38 (iv)] Speec.-Electric contacts intermittently interrupting the circuit of an electric motor and opened and closed under the control of a spring and a centrifugal mass are additionally controlled by the load torque. Fig. 1 shows the motor shaft 4 carrying the mass 1 on a leaf spring 2 and connected through a torsion spring 9 with the load shaft 10. The shaft 10 carries a cam 7 which is adapted to move one of the contact members 5, 6 and may provide any desired torque-speed characteristic or obtain constant speed at all loads. Fig. 3 shows a mass 11 operating upon contacts 20, 23, pivoted at 12 on a disc on the motor shaft, and controlled by a spring 15 with adjustable anchorage 17 on the disc. The torque loading, is obtained by a prismatic pin 29 engaging the mass at a desired point near the pivot and carried by a crank 30 connected to the load shaft.
Patent GB-263460-A (GB)
Title: Improvements in and relating to wind musical instruments
IPC: G10D9/04
Filed: 1926-10-02
Abstract: 263,460. Lehmann, C., and Chemnitzer, E. Oct. 2, 1926. Brass &c. wind instruments. - A transposing French horn or the like has a multipassage rotary valve 1 whereby an extra length 18 of main tubing is thrown in to change the key, extra tubes 19, 20, 21 for compensating the notes played by the pistons 4, 5, 6 being simultaneously thrown in by the valve. The valvs is of the quadruple two-way form shown in Fig. 4.
Patent GB-721641-A (GB)
Title: Improvements in the polymerisation of methacrylic esters
Inventor: STERN HAROLD JACOB
IPC: C08F265/06
Filed: 1952-09-30
Abstract: Methyl methacrylate is bulk polymerized in the presence of methyl methacrylate polymer and, as catalyst, a mixture of a peroxide, such as benzoyl or lauroyl peroxide, at least a trace of a copper compound, such as copper oxide, sulphate, methacrylate, or oleate, and a mercaptide accelerator selected from zinc, cadmium, lead, bismuth, alkaline earth metal, and alkali metal salts or complexes formed with tertiary aliphatic mercaptans, such as tert.-dodecyl, tert.-hexdecyl, tert.-octyl, and tert.-butyl mercaptans.  The monomeric methyl methacrylate may be employed in conjunction with a minor proportion of another polymerizable monomer such as methacrylic acid, acrylonitrile, vinylidene chloride, vinyl acetate, styrene, alpha-methyl styrene, and chlorostyrene, and may also contain a stabilizer such as hydroquinone.  The polymer component may be a homopolymer of methyl methacrylate or a copolymer thereof with a minor proportion of another monomer, such as other methacrylic monomers, styrene, and chlorostyrene.  The process may be used in the preparation of dental prostheses and fillings.