baber/WOPTO huggingface dataset:
Patent GB-347017-A (GB)
Title: Electric incandescent lamps with reflectors
IPC: F21V19/02
Filed: 1930-05-06
Abstract: 347,017. Electric battery &c. lamps. O'DELL, A. E., 285, High Holborn, London. -(Elektroteohmache Fabrik Schmidt & Co., Ges. ; Bodenbach, Czecho-Slovakia.) May 6, 1930, No. 13949. [Classes 39 (ii) and 75 (iv).] Mounting electric lamps in lanterns.- The socket 7 of an electric incandescent lamp bulb 8 is slidably mounted in the reflector sleeve 2 of an electric lamp, and is adjusted along the reflector axis by means of a pin-andslot connection 3 between the reflector sleeve and the lamp socket or, as shown, a bush 4 which is rotatable but not axially movable with respect to the lamp socket, a hand-lever 5 being attached to the socket or bush. The socket 7 is attached to a battery holder 9 which slides in guides 30, and is pressed towards the reflector by a spring 11. A bolt set in the slot in which the lever moves marks the position for the bulb to be in focus. The battery box has insulated contact strips 18, 19 connected respectively with the lamp contact 20 and one pole of the battery. The other pole of the battery and other lamp contact are electrically connected through the battery box and socket body, all being in metallic connection. The switch contact spring 16 connects the bulb to battery contacts or the contact spring 21 which extends from the dynamo supply terminal 17 and is insulated from the casing. Spare lamps are carried by holders 13, 14. The socket body may be axially movable relatively to the battery box, and the lever 5 may be wholly within the casing. In the form in which the pin- and-slot connection is directly between the socket and sleeve, the hand-lever is connected with the battery holder, as shown in Fig. 6, and contact springs 22, 23 from the lamp contact and a battery terminal bear against two contacts 24, 25 which are insulated from each other and are connected with the switch. The lamp socket may be rotatably connected with the battery holder and also freely movable axially, the lever being attached to it. The lamp may be fed from a dynamo only. The lever may be independently fulcrumed, and have a toothed segment at its inner end which engages a toothed segment on the member to be actuated. In this case a gear wheel may replace the handlever.
Patent GB-724125-A (GB)
Title: Improvements in or relating to float-operated electric switches
IPC: H01H36/02
Filed: 1955-02-16
Abstract: 724,125. Magnetic switches. FLIGHT REFUELLING, Ltd., BROOKESMITH, F., and MACGREGOR, P. S. Feb. 16, 1955 [June 3, 1952], No. 13999/52. Class 38 (5). A float-operated switch mechanism comprises a non-magnetic partition 10 pivotally supporting at 12 an arm 13 of a depending float (Fig. 1, not shown). The arm 13 adjustably carries an armature 41 influenced by a magnet 27 mounted on one arm of a two-armed lever 23, 24 pivotally mounted at 18 on a lug 16 on the other side of the partition 10. The lever is balanced by a counterweight 32 and has a screw 30 for operating the plunger 31 of a micro-switch 21 fixed to the lug 16. When the float is in its lowest position (Fig. 2) the armature 41 is against the partition 10 whereby the magnet 27 is attracted thereto and the screw 30 operates the switch plunger 31. When the float is raised by the liquid the arm 13 is rotated counter-clockwise so that the armature moves away from the magnet whereby the latter is released and a spring within the switch 21 projects the plunger 31 and the switch is restored.
Patent GB-973908-A (GB)
Title: 1ª.2ª-methylene-í¸-17ª-hydroxy-progesterone-17-carboxylic esters halogenated in 6-position and a process for their manufacture
IPC: C07J7/00
Filed: 1962-04-11
Abstract: The invention comprises 6-halogen (particularly chloro)-1a , 2a -methylene-D 6-17a -hydroxy-progesterone 17-carboxylic esters, and the preparation thereof by epoxidizing 1a , 2a -methylene-D 6-17a -hydroxy-progesterone carboxylic esters, for example, by means of a percarboxylic acid, to form 1a , 2a -methylene-6a , 7a -oxido-D 4-pregnen-17a -ol-3,20-dione 17-carboxylic esters, treating this compound with a hydrohalic acid to form 6-halo-1a -halomethyl-D 4,6-pregnadien-17a -ol-3, 20-dione 17-carboxylic esters, and dehydrohalogenating this compound with an organic base such as collidine.  Specification 926,372 is referred to.
Patent GB-311333-A (GB)
Title: Improvements in back pedalling brakes for velocipedes
IPC: B62L5/04
Filed: 1929-05-06
Abstract: 311,333. Suter, P. May 9, 1928, [Convention date]. Back-pedalling brake and free-wheel arrangements. - In a free-wheel hub having a backpedalling brake of the type in which a brake sleeve 15 is expanded against the hub 5 by means of a coupling-member axially displaceable on the driving-member 7 by means of a screw thread 11, the coupling-member is formed of two annular parts 12, 26 adapted to be pressed apart by an interposed spring 31, the two parts being splined together at 25 so that the part 26 rotates with the part 12 but is axially movable thereon. During forward motion of the sprocket wheel 6 and driving-member 7, the coupling-member is displaced to the right to bring a serrated conical end surface 29 on the part 26 into driving engagement (as shown) with a conical surface 30 on the hub 5, the spring 31 being compressed and the coupling-member completely freed from the brake sleeve 15. In free-wheeling, the rotating hub entrains the coupling-member, which is displaced to the left to bring a serrated conical part 13 into engagement with a serrated conical surface 14 on the brake sleeve 15, the part 26 being moved to the right on the part 12 by the spring 31 until arrested by a stop consisting of a wire ring 28 on the part 12. In back-pedalling, the coupling-member is further displaced to the left, and the brake sleeve 15 is expanded under the action of a conical surface 23 on the bearing member 19. The brake sleeve 15 consists of a number of spaced longitudinal sections held together by spring rings 18. A fixed instead of a free-wheel drive may be obtained by turning the wheel round so as to bring an alternative sprocket wheel 32 into engagement with the chain.
Patent GB-537809-A (GB)
Title: Improvements in and relating to internal combustion engines
IPC: F02F1/18
Filed: 1940-09-12
Abstract: 537,809. Two-stroke engines; cylinders SOUZA, D. F., DE. Sept. 12, 1940, No. 14118 [Class 7 (ii)] A cylinder is formed of two or more partcylindrical sections with longitudinal bolting flanges between which are distance-pieces containing inlet and exhaust ports. A twopart cylinder with flanges 2 and distance pieces 3 with ports 4, 5 is shown in Fig. 1. The cylinder may be applied to a two-stroke engine having a pair of oppositely-moving pistons and crank shafts located at the ends of the cylinder remote from a central combustion chamber. The engine shown in Fig. 4 has two pairs of oppositely-moving pistons 9 and a central crankshaft 7 to which the whole of the pistons are connected indirectly. If preferred, two additional crankshafts may be located at the ends of the cylinder for connection to the outer pistons.
Patent GB-1416151-A (GB)
Title: Window channels
IPC: B60J10/00
Filed: 1972-03-25
Abstract: 1416151 Glass run DRAFTEX DEVELOPMENT AG 29 May 1973 [25 March 1972] 14136/72 Heading E1J The sealing lips 11 b of a metal-cored, plastics glass run for a vehicle window are made of a softer plastics than-and are moulded integrally with-the channel and the lips are coated with flock 14. The run is made by extruding the hard and soft plastics as a one-piece extrusion onto the flat metal core and then bending it into a channelshape. The base 11c of the channel may also be coated with flock 13. The channel may be curved to accommodate a window with curved edges.
Patent GB-119516-A (GB)
Title: Improvements in Photographic Cameras.
Inventor: MUELLER FREDERICK WILLIAM
IPC: G03B37/02
Filed: 1917-10-01
Abstract: 119,516. Mueller, F. W. Oct. 1, 1917. Panoramic photography and apparatus. - A panoramic camera for photographing the whole sweep of the horizon at a single exposure upon a continuous sensitive film comprises a cone-shaped film support and a rotatable lens having its optical centre in the axis of the cone and its optical axis at an angle therto; the film may be carried in a removable film-holder so as to permit daylight loading. As shown in Fig. 1, the film, having the shape of a large sector of a circle, is carried on a film support 4 in the shape of a cone having a semi-vertical angle of 45 degrees. A hollow removable cone 6, having a triangular exposure slot 13, covers the film, and is secured to a top carrying a lens 10, the axis of which is perpendicular to a generator of the cone. The top has a flange 9 which enters a groove 8 so as to form a lighttight joint, and is mounted on a shaft 17 which enters a hollow rotatable shaft 18 and is secured to it. A spring 25 in a drum 23 rotates the shaft 18, cone 6, lens 10, &c., to effect exposure, a latch 37 normally held in the path of a lug on the flange 9 by a spring 'being pressed down to permit rotation. The length of exposure may be regulated by adjusting the position of a braking shoe 34 which engages a disk 33 carried by a. governor 32 geared to the shaft 18. The exposure slot 13 is covered before and after exposure by a shield 14, the shield being provided with a ring loosely surrounding the shaft 18 and having a lug 14<a> which comes into engagement with a lug and a leaf spring carried by the cone 6 and so arranged that the shield is automatically removed from and brought into the covering position. In a modification, the film is carried in a film-holder comprising a conical base 44, Fig. 10, secured to an externally threaded nipple 43, and a conical cover 46, the cover having flanges 47, 48, and being held in position by one or more pins 50 and slots in the manner of a bayonet joint. The cover 46 has a triangular slot normally closed by a shield 52 which is provided also with a triangular slot. The film-holder is inserted into the camera so as to rest on the support 4, and the nipple 43 screws into a socket constituting the upper end of the shaft 18. When rotation of the shaft 18 and the parts carried by it commences, relative movement cf the shield 52 and the cover 46 takes place so as to bring their slots and the slot in the cone 6 into coincidence and permit exposure, and at the end of the exposure further relative movement takes place so that the slot in the cover 46 is again covered, the movements being effected by means of lugs and levers described in the Specification.
Patent GB-1532594-A (GB)
Title: Self-retracting tool holder assembly
IPC: B23Q1/68
Filed: 1977-04-04
Abstract: 1532594 Tool holders DEVLIEG MACHINE CO 4 April 1977 [5 April 1976] 14179/77 Headings B3B B3C and B3T To avoid draw lines on withdrawing a tool after a machining operation a tool holder assembly supports a tool bit holder 16 to allow limited pivoting about, an axis inclined to the longitudinal axis of the shank 14, the holder 16 being spring biased to a retracted position. The holder 16 engages the shank by engaging flat surfaces 12, 18 and pivots about a pin 36. A stop pin 40 engages in a recess 42 to limit the pivoting movement and a spring biased plunger assembly 52 acts in the stop pin 40. In operation when the tool bit 2Q first bites into a workpiece the holder 16 pivots to its working position during a cutting operation. When cutting ceases the plunger assembly 52 biases the holder to a retracted position for tool withdrawal. The geometry is arranged so that when the holder pivots to its working position the tip of the tool bit moves into the workpiece along the feed direction and in the cutting direction. Turning, facing and boring operations are referred to.
Patent GB-458296-A (GB)
Title: Improvements in or relating to apparatus for delivering and weighing predetermined quantities of material
IPC: G01G13/00
Filed: 1935-06-15
Abstract: 458,296. Automatic - feed weighers. WARD, T. O., Grinton Lodge, Church Road, Roby, and EATON, S., 65, Greenhill Road, Mossley Hill, Liverpool, both in Lancashire. June 15, 1935, No. 14205. [Class 143] In apparatus for delivering and weighing granular material, of the type in which a supply hopper communicates intermittently with a measuring chamber from which the material is discharged on to the goods pan of the weighing device, the measuring chamber is controlled by a pair of oppositely-moving slide valves and the upper valve has a relatively small aperture for permitting a dribble feed through the measuring chamber direct to the scale pan, the area of the dribble aperture being controllable by a closure member operated by an external handle, and means are also provided to compensate for the material in flight between the hopper and the weighing device after cut-off of the feed. In weighing out a predetermined quantity into a bag placed on the scale pan 7 below a funnel 9, the operator depresses a handle 23 and thereby slides the lower valve 18 into the open position, and the upper valve 15 into the closed position, the valves being retained by the attractive action of an electromagnet 57 on an armature 58 on the valve 18. The material runs from the measuring chamber 3 into the bag, and a dribble continues through an aperture 15a, Fig. 4, in the upper valve, the size of the aperture being adjustable by means of a semicircular projection 60 rotated by an external knob 61. When the weight is made up a bracket 41 on the scale pan allows a lever 37 to descend and open a spring contact 44, Fig. 9, in the circuit of the electromagnet 57, springs 24 then closing the lower valve 18 to cut off the feed and at the same time opening the upper valve 15 to refill the measuring chamber. The lower valve 18, in closing, rocks a mercury switch 53 and causes an electromagnet to rock the lever 37 clear of the bracket 41 and enable the weight to be checked on the scale dial before initiating a further weighing operation. The pressure of the lever 37 upon the bracket 41, compensates for the material in flight at cut-off of the feed and adjustment therefor may be made by an adjusting screw 50. The capacity of the measuring chamber may be adjusted by means of a plunger slidably disposed in the side of the chamber and operable by means of a hand-lever. An agitating device driven by hand or motor is arranged against the dribble feed aperture to maintain a constant feed. Specification 334,304, [Class 143], is referred to.
Patent GB-931208-A (GB)
Title: Web tension control apparatus
IPC: B65H23/24
Filed: 1961-04-20
Abstract: 931,208. Feeding webs. GRAVURE RESEARCH Inc. April 20, 1961 [April 25, 1960], No. 14273/61. Class 100 (1). [Also in Groups XXIX and XXXV] An apparatus for correcting variations from a selected level in the tension of a travelling web for use in web handling machinery such as rotary printing presses, comprises a brake, Fig. 6, in the form of a vacuum box 27 extending transversely of the web having a perforated wall 26 so that the web slides across the surface of the wall 26. A pump (not shown), is provided for evacuating air from the box 27 at a regulable rate, and a means for sensing variations in the selected web tension is provided. Two separate embodiments of a controller responsive to the sensing means are provided; a pneumatic controller (see Group XXIX) and an electrical controller (see Group XXXV). In one embodiment of the sensing means, Fig. 4, for use with the electrical controller, the web passes over a roller which has its ends 32, 33 journalled in the outer ends of a pair of arms 34, 35, so that a component of the tension in the web is sensed. The inner ends of arms 34, 35 are pivoted to side frame members 36, 37 of a machine, such as the printing press referred to above. The outer ends of arms 34, 35 are connected, through setscrews 38, 39, with buttons 41, 42 extending from the tops of strain gauge load cells (see Group XXXV). In the second embodiment of the sensing means, Fig. 11, for use with the pneumatic controller, the web 25<SP>1</SP> passes over a roller rotatably mounted in a pair of arms that are rigidly mounted on a shaft 98 mounted in bearings supported by the frame of the press. A head 104 mounted on a link 104a fixed to the shaft 98 bears against the loading platform 105 of a pneumatic load cell 110 (see Group XXIX). Any change in the tension of the web is immediately transferred to a change of force on the loading platform 105. The load cell produces a signal for any variation of the web tension which is fed via a conduit 131 (Fig. 9, not shown) to the pneumatic controller. The pneumatic controller includes a proportional control, a rate control and a reset control and produces an output signal which controls the setting of a pneumatically actuated throttle valve (not shown) located in a conduit connecting the vacuum pump with the vacuum brake, which in turn varies the tension of the web.
Patent GB-840885-A (GB)
Title: Flow regulation
IPC: G05D11/00
Filed: 1956-05-08
Abstract: <PICT:0840885/III/1> The effect of an increase or decrease in viscosity of the gas due to an increase or decrease in temperature is compensated by causing the increase or decrease in temperature to increase or decrease the rate of flow of the gas to an electro-conduction measurement gas analyser EC, an electrolyte 11 passes around a double casing 7 of a vessel 6 contaning a liquid 8 and a predetermined quantity of air V0.  A rise in temperature of the electrolyte causes expansion of the volume V0 of air and some of the liquid 8 is forced through a pipe 9 into a reservoir 4 raising the level of liquid therein by D h1.  The increase D h1 in the liquid level increases the depression in the pipe 3, and, in consequence, the rate of flow of the gas is increased.  Air is drawn down a pipe 12, through the liquid in the reservoir 4, and is exhausted by a vacuum pump.  The electrolytic cell is a modified form of that shown in Specification 641,978. Gas to be analysed enters the coil B and passes into the conduit system 3.  Electrolyte from conduit 10 enters the lower bulb C1, thence to the upper bulb D, fills coil E1 and passes through the capillary 2 and into confluence with the gas at the bottom of the coil B.  The electrolyte leaves the cell and passes downwardly through an hydraulic seal 11.  The gas passes upwardly through conduit 3.
Patent GB-862492-A (GB)
Title: Process for the manufacture of polymers in emulsion or suspension
IPC: C08F2/26
Filed: 1958-05-05
Abstract: Ethylenically unsaturated compounds are polymerized in neutral aqueous media using an emulsifying agent which contains a plurality of carbon chains containing 3 to 20 carbon atoms bound through ester linkages to at least one group imparting solubility in water, which emulsifying agent is easily hydrolysable in alkaline or acid media under mild conditions, and after the polymerization the emulsifying agent in the reaction mixture is hydrolysed to form non-surface-active products by rendering the mixture alkaline or acid.  Specified monomers are styrene, vinyl esters, vinyl chloride, vinylidene chloride, acrylic acid esters, butadiene and unsaturated acids.  The emulsifiers may be salts of sulphonated or phosphated polycarboxylic acid esters, e.g. sodium sulphosuccinic acid diesters such as the didodecyl ester, sulphopyrotartaric acid esters, a  : a 1-disulpho succinic acid esters or sulphonated or phosphated tricarballylic acid esters; or salts of esters of sulphonated or phosphated polyhydric alcohols, e.g. 1 : 3-propanediol diesters. Polymerization may be initiated by conventional catalysts, e.g. peroxides, redox systems and azo compounds.  Specifications 843,700 and 855,669 are referred to.
Patent GB-1300679-A (GB)
Title: A hydraulic power steering device for a vehicle
IPC: B62D6/02
Filed: 1971-05-12
Abstract: 1300679 Power steering NISSAN MOTOR CO Ltd 12 May 1971 [1 June 1970 (2) 11 Aug 1970] 14425/71 Heading B7H A vehicle has an hydraulic power steering system in which the vehicle's road speed is used to modulate the reaction pressure in the reaction chamber 15 of the control valve 11 by means of a modulator valve 13 placed between the fluid pump 10 and the reaction chamber 15. The control valve 11 is incorporated in the steering linkwork and comprises a spool 28 having grooves 45, 46 which works in a valve body 16 to which is connected the steering pump P at bore 40 and the power steering ram at bores 47, 48. The "feel" at the steering wheel is due to the pressure in the reaction chamber 15 acting on a spring seat 32 which is slidable inside spool 28 and which acts on the steering wheel via rod 38. Pump P communicates with the reaction chamber 15 via the pressure modulator valve 13 which may be, as shown in Fig. 2, of the nozzle-flapper type wherein a torque motor 54 fed by a D.C. current generated in proportion to vehicle speed controls the spacing X between the flapper 52 and the nozzle 51. Alternatively the modulator valve 13 may comprise a chamber having an inlet from pump P, an outlet to the valve 11 and a further orifice variable controlled by a poppet valve operated by a solenoid also fed by a speed dependent D.C. current. In a further modification (Fig. 6) a valve 75 attached to propeller shaft 76 contains a spool 83 which slides outwards at high shaft speed to increase flow from bore 80 to urge spool 92 of valve 77 to the right, thus increasing pressure in line 102 which leads to control valve 11. (For Figures see next page)
Patent GB-543623-A (GB)
Title: Improvements in screws and the like
IPC: F16B33/00
Filed: 1940-09-25
Abstract: 543,623. Wood-screws. GERHOLD, A. Sept. 25, 1940, No. 14537. [Class 89 (ii)] A wood screw has a gimlet end 3 with a quick pitch groove 4 leading into the thread 2. The groove may be continued on the shank 1 beyond the thread. Applications to a screw eye, railway chair screw, and coach screw are also illustrated.
Patent GB-1363023-A (GB)
Title: Doors locks
IPC: E05B65/36
Filed: 1972-03-28
Abstract: 1363023 Locks L L J MASSAL 28 March 1972 [30 March 1971] 14574172 Heading E2A A door lock comprises a part 5 having a cam 4 and a co-operating part having a pivoted fastening member 7 provided with a cam follower 8 which in the locking position, is held in firm engagement with the cam by a spring 15 and is brought to a locking position by closure of the door. The follower is arranged to move, around the cam from and back to the locking position as a result of first opening and then closing the door and initially under the action of the spring which is re-energised in returning the cam follower to the locking position; there are means for releasing the member 7 to the unlocking position. As shown, the lever 7 is pivoted to an arm 9 connected to the tension spring 15 and is engaged by a stop lever 11 in turn engaged by a pawl 12. Energisation of a solenoid causes the plunger 17 thereof to pivot the pawl and to release the stop lever whereby the lever 7 is rotated under the action of the spring to an unlocking position wherein the cam follower rides over the cam to assume the position A, Fig. 3, and which position is indicated by a lamp 26 or an audible warning device; alternatively, the pawl may be operated by a key. On closure of the door, the cam follower 8 rides under the cam 4 whereby the lever 7 displaces a member 13 which engages the stop lever 11 to reset the pawl 12 to a locking position, the cam follower assuming the position B, Fig. 3.