baber/WOPTO huggingface dataset:
Patent GB-532465-A (GB)
Title: Pressure regulators
IPC: G05D16/06
Filed: 1939-07-24
Abstract: 532,465. Pressure-regulating valves. GROVE, M. H. July 24, 1939, No. 21494. Convention date, Oct. 10, 1938. [Class 135] A pressure-regulating device for delivering steam or similar fluid at a constant pressure is constructed with a valve 14 between the inlet pipe 11 and supply pipe 12, and the valve is controlled by a diaphragm 21, preferably of synthetic rubber, which is controlled by a chamber 46 containing compressed air and also by the steam pressure in a chamber 36 connected by a passage 37, port 59, and pipe 58 to the steam outlet pipe 13. The chamber 36 is preferably formed with fins 23a for radiating heat, and above the diaphragm 21 is a metal disc 44 with a bevelled edge 44a the maximum diameter of which is slightly less than that of a recess 60a into which it is expanded by the pressure of the air in chamber 46 which is admitted through passages 48, 47 under control of a needle valve 49. A central boss of the disc 44 supports a rod 39 which is guided by a bush 42 supported by radial webs 43, and by a bush 41 supported by flanges 32, 34, which connect the valve body to the chamber 36 and are so designed as to prevent a great flow of heat from the valve to the chamber 36. In working, this chamber is adapted to contain condensed steam so that the diaphragm is covered with water, or if the fluid under control is injurious to the diaphragm the chamber may contain a layer of liquid which has no injurious action. To prevent abrupt movements of the diaphragm 21 a rigid baffle wall 52 is secured below it with a slight clearance, and it is provided with a small aperture 54 and a plurality of webs 56. The valve seating 15 is maintained in position by a removable ported sleeve 16, and the valve is of inverted conical form and is urged on to its seat by a light spring 19. In modifications (a) the chamber 36 is formed with an extra set of cooling fins larger than the fins 23a, Fig. 1; and (b) the dome 22 is surrounded by a container filled with a cooling liquid such as water, the container being suspended by straps from the flanges 32, 34. Specification 447,519 is referred to.
Patent GB-458248-A (GB)
Title: Improvements in or relating to velocipedes
IPC: B62H5/18
Filed: 1936-08-06
Abstract: 458,248. Coin - freed velocipedes. LANGE, C., 35, Bethesdastrasse, Hamburg, and HAMMERSTEIN, (nÚe HARTWICH), H., 83, Ohe-Chaussee, Garstedt, near Hamburg, Germany. Aug. 6, 1936, No. 21695. Convention date, Jan. 8. [Class 27] A velocipede is provided with a brakeapplying device controlled by one of the road wheels to effect a gradual application of the brake after a given number of revolutions of the wheel, and coin-freed means for releasing the brake. The device comprises a casing 17, Figs. 2 and 4, clamped to the steering pillar and guiding a brake-rod 12 which is surrounded by a spring 16 tending to raise the brake from contact with the front wheel tyre of a bicycle. An eccentric on the hub of this wheel reciprocates a rod 20, 21, adjustable in length at a coupling 22, the rod actuating a driving pawl on a pivoted arm 30 to rotate a ratchet wheel 32 step-by-step. A worm 38 on the shaft of the ratchet wheel rotates a wheel 39 and a cam 41 which is connected to the wheel 39 by a lost motion connection comprising a spring 44 and a pin-and-slot 43, 42. After the bicycle has run a certain distance, the cam contacts with the end of the rod 12 and gradually depresses it to apply the brake, which is shown fully applied in Fig. 2. Coin action, mechanical connection.- To release the brake, a coin 48 is inserted in a slot 46 to drop to position between an inclined shoulder 49 on the brake-rod, and the end of a spring-controlled plunger 58 provided with a finger piece 59, the coin resting against a pin 50 on a lever 52 pivoted at 51. When the plunger is depressed, it acts through the coin to depress the brake-rod, the cam 41 being moved clear of the rod by the spring 44. In order to prevent manipulation of the rod 12 from the outside, when the brake is applied, it is locked by the nose 521 of the lever 52 engaging between two pins 54, 64 on the rod. The coin, when moved by the plunger 58, presses against the pin 50 and disengages the lever 52 from the rod 12. The incline 49 on the rod 12, and a similar incline on the end of the plunger causes the coin to move sideways against the pin 50 and finally to drop to a money-box 63. Money-boxes or receivers.-The box 63 is attached to the bottom of the casing 17 by a bayonet joint and locked by a pin 66 on a hinged front of the casing 17 engaging a slot 69. Sawdust in the box 63 prevents the coins from rattling.
Patent GB-879789-A (GB)
Title: A process for the manufacture of spirocyclic polyketones
Filed: 1960-06-21
Abstract: Spirocyclic triketones of the general formula <FORM:0879789/IV (b)/1> and enol ethers and enol acylates thereof (R1, R2, R3 and R4 are optional alkyl, alkoxy, nitro or halogeno substituents and R5 is an optional alkyl substituent) are prepared by additively reacting a 2-alkoxycarbonyl-coumaranone-(3) of formula <FORM:0879789/IV (b)/2> (R6 is a lower alkyl group) with an alkenyl methyl ketone of formula (R5 or H)-CH: CH.CO.CH3, cyclizing the addition compound by treating it in a water-free organic solvent with an alkaline cyclizing agent, and if desired converting the resulting spirocyclic triketone into an enol-ether or enol ester thereof.  The addition process is preferably effected in the presence of benzyl trimethyl ammonium hydroxide in methanol, or both addition and cyclization stages can be effected in one process by use of sodium methylate in methanol.  When R5 is present two stereoisomeric racemates are obtained which can be separated by chromatography or fractional crystallisation.  Six detailed examples are given.  2 - Methoxycarbonyl - 2 - (3-oxobutyl)-4,6-dimethoxy-coumaronone-(3) is prepared by treating 2-methoxycarbonyl-4,6-dimethoxy-coumaranone-(3) with methyl vinyl ketone in the presence of benzyl trimethylammonium hydroxide.  Its 2-ethoxycarbonyl-, 7-methyl-, 2-(1-methyl-3-oxobutyl)-, and 7-chloro-analogues are similarly prepared. 2-Methoxycarbonyl-4,6-dimethoxy-7-methyl coumaranone-(3) is prepared by cyclizing 2 - (methoxycarbonyl-methoxy)-3-methyl-4,6-dimethoxy benzoic acid methyl ester itself prepared from 2-hydroxy-3-methyl-4,6-dimethoxy benzoic acid methyl ester and methyl bromoacetate.  The 7-chlorocoumaranone-(3) analogue is formed from the corresponding 3-chloro-benzoic acid methyl ester which is prepared from 3-chloro-4,6-dimethoxy salicyclic acid by methylation and then treatment with methyl bromoacetate.  Similarly are prepared 5-chloro-(and 3,5-dichloro-)4,6-dimethoxy salicyclic acid methyl ester, the corresponding 2-(methoxycarbonyl-methoxy) compound, and 2-methoxycarbonyl-5-chloro-(or 5,7-dichloro)-4,6-dimethoxy coumaranone-(3).
Patent GB-259725-A (GB)
Title: An improved exchangeable furnace arch
IPC: F23M5/06
Filed: 1925-08-29
Abstract: 259,725. J³rges, E. Aug. 29, 1925. Bricks, special shapes of.-In a furnace arch formed of bricks suspended by hanger bars, the lower ends of the latter have the shape of hammer heads F which are inserted in corresponding openings G in the bricks, such openings being provided with lateral extensions H to receive the hanger bars B and undercut recesses to receive the hammer heads when the bricks are slid laterally into position on the hanger bars. The hanger bars are composed of two members connected by an articular joint C. The bricks are provided with projections and corresponding recesses at D. Air passages E are provided in the bricks for the passage of air for cooling purposes.
Patent GB-885034-A (GB)
Title: Improvements in or relating to cabinets and like articles of furniture
IPC: A47B47/03
Filed: 1959-06-24
Abstract: 885,034. Cabinets. GRUNDY EQUIPMENT Ltd., WEST, L. J., and GRIFFIN & GEORGE Ltd. June 9, 1960 [June 24, 1959], No. 21733/59. Class 52(1) A cabinet has rectangular front and rear frames 13, 14 end plates 16, and bottom and top plates 15, 40 respectively which lock plates 16 in engagement with frames 13, 14, the plates 16 having edges 16a, 16b inturned to provide grooves which embrace tongues formed by the adjacent edges 13c, 14c of the upright members of the frames 13, 14. The tongue is a close fit in the mouth of the groove and the bottom of the groove is semi-circular. Each of the plates 16 has a lower flange 16c with lip 16d which receives the downwardly and inwardly turned portion 15a, 15b of plate 15. Drawer slideways 19, 20 can be adjusted in height by means of eccentrics 21 mounted on screws 23 engaged by nuts and the sides of the drawers 10 carry angle section strips 24 which engage the slideways. A rubber buffer 19d is secured at the front of each slideway and each drawer has a groove 25 as a finger hold. The back of the cabinet is formed by a sheet metal member 29 secured in position by pins 30, 31 on triangular brackets 32 passing into holes in uprights 14c which brackets also support a shelf 33 in the cabinet. Pins 30 are hooked and the shelf has holes engaged by pins 34 on the top edges of the brackets.
Patent GB-254137-A (GB)
Title: An improved method of and means for preventing discharges from surfaces or bodies charged to a high electrical potential
IPC: H02G15/103
Filed: 1925-08-31
Abstract: 254,137. Simons, D. M. Aug. 31, 1925. Cable joints are protected by wrapped-on insulation containing as part of its structure a built-up body of conducting material forming a surface of revolution about the axis of the conductor and connected to the conductor or the sheath thereof. Such a body may be formed by coating the edges or other portions of the wrapping material with metal. Fig. 2 shows a joint thus protected. The sheath 4 of the portions of the cable 1 and the insulation are cut away and the ends of the conductors 2 thus bared are united by a metal sleeve sweated on. The joint thus formed is wrapped in a strip of paper shown in a shortened form in Fig. 3. On this strip is a metal band 8, shaped as shown, so that when the paper is wrapped on there is formed a metal body 6<a> surrounding the joint and in contact with the conductor 2. The joint may be enclosed in a metal sleeve 10 which may be filled with insulating liquid. Other arrangement of metal described which may yield surfaces nf toroidal or other form.
Patent GB-398016-A (GB)
Title: Improvements in or relating to lids for saucepans and the like
IPC: A47J36/08
Filed: 1932-08-04
Abstract: 398,016. Saucepan &c. lids. CURTIS, G. W. R. and TAYLOR, G. A., 81, Corporation Street, Walsall. Aug. 4,1932, No. 21851. [Class 66.] A saucepan or like lid is provided with a plate b slidable at the under side thereof and formed with apertures b<1> adapted for hit-and-miss registration with apertures a<1> in the lid, the plate being formed with an arcuate channel b<7> . engageable with a pair of arcuate embossments a<4> formed at the underside of the lid, a second channel b<8> serving to strengthen the plate. The plate is operated by a handle comprising a part b2 encircled by a strap b<5> the ends of which are turned over at the underside of the plate ; the handle is supported upon a base-plate b<4> and slides in a curved slot a<3> in the lid.
Patent GB-804995-A (GB)
Title: An improved process for the halogenation of normally gaseous olefins
Inventor: READ WILLIAM JAMES
IPC: B01J19/12
Filed: 1955-07-28
Abstract: The invention comprises a continuous process for the halogenation of gaseous olefines by introducing olefine and chlorine, bromine or mixtures thereof into a reaction zone provided with interior heat exchange means having a large expanse of cooling surface per volume of free reactor space, withdrawing heat products at a rate such as to maintain the interior of the reaction zone at a temperature below the boiling point of the product dihalide, whilst maintaining an entirely fluid phase, and establishing contact between olefine, halogen and product dihalide while the latter flows downwardly, as a discontinuous phase, over the surface of the heat exchange means. Advantageously the dihalide is contacted in countercurrent with gaseous olefine to remove the dissolved halogen.  Two zones may be used, a lower packed zone below the reaction zone, as in the apparatus of Specification 804,996, [Group III].  The process is applicable to the bromination of ethylene, but also to the bromination of other normally gaseous olefines, e.g. propylene, and chlorination or joint chlorination and bromination of olefines.  An example of the bromination of ethylene to ethylene dibromide, with description of the plant and operating data is given; the process may be made automatic by maintaining ethylene pressure at a predetermined value, and flow rate in excess of consumption to give a constant excess in the exit gases, with a constant bromine feed rate; any fluctuations in this are compensated for with automatic adjustment of the ethylene flow.
Patent GB-728760-A (GB)
Title: Improvements relating to surge storage silos and like apparatus
IPC: B65D88/54
Filed: 1952-09-01
Abstract: 728,760. Screw conveyers; emptying storage chambers from below. PAGE, M. W. FLOOD-, and MELDRUM, FLOOD-PAGE, Ltd. Aug. 27, 1953 [Sept. 1, 1952], No. 21983/52. Classes 78 (1) and 78 (4). In a chamber for the temporary storage and delivery at a controllable rate of wood waste in comminuted form, e.g. sawdust, of the kind which is not divided by partitions or floors and is of considerable depth, the material is delivered to an outlet at the side of the chamber 1, Fig. 1, by a screw 8 disposed just above the floor 4 which is rotatable about the vertical axis of the chamber. The floor may be stationary and the screw movable about a vertical axis relatively to it or the floor and the screw may each be movable relatively to one another. The screw 8 is driven by.a motor 14 through an infinitely variable gear 15 and chain-andsprocket gearing. The gear 15 is preferably of the kind described in Specification 714,592, [Group XXIV]. The inner bearing 9 for the screw is rotatably mounted upon a vertical trunnion 11 which is coaxial with the chamber and is held against rotation. The floor 4 is rotatably mounted on the trunnion 11 by means of a bracket 43 and has an annular rack 44 secured to it which is engaged by a pinion 45 driven by a motor through an infinitely-variable gear. The underside of the rack is supported by rollers 49 carried by pedestals 51. An annular gutter 33, Fig. 4, is disposed below the edge of the floor to catch material. Projections 35 on the underside of the floor push such material along the gutter to an outlet which communicates with the main delivery shoot. The amount of material entering the gutter is minimized by a flexible strip 38 attached to the wall of the chamber. The outlet of the chamber may be at the centre of the floor and the floor may be conical. There may be several screws delivering to a corresponding number of outlets or to an annular outlet extending around the bottom of the chamber.
Patent GB-251161-A (GB)
Title: Improvements in and relating to stop valves
IPC: F16K31/44
Filed: 1925-09-03
Abstract: 251,161. Graham, J., and Auld & Sons, Ltd., D. Sept. 3, 1925. Valves controlled by pilot or relay valves.-A stop valve of the type opened by the pressure of the fluid on the valve d and the operation of a regulating screw h and closed by the regulating screw or in emergency by the operation of an actuating valve to admit pressure fluid to a cylinder f to act on a piston g carried by the stop valve spindle e, is so constructed that on opening the stop valve fluid leaks to both sides of the piston g and is provided with a pair of spring-loaded lift valves m, p, Fig. 3, arranged in alignment within a single valve chest, which lift valves m, p together form an actuating valve on operation of which fluid under pressure acts directly on one side of the piston g while the other side is opened to exhaust whereby the piston g forces the valve d to its seat. The valves m, p are opened by a lever s so putting chambers i<1> supported from the inlet side of the stop valve and i<4> open to exhaust in communication with the outer and inner sides of the piston g to close the stop valve. The cylinder f is fitted with a liner g<6> and at the inner end with a sleeve g<3> having leaky bushes g<4> through which the valve-spindle e passes. The valve spindle is of reduced diameter at its outer end to fit in the bore of the regulating screw h.
Patent GB-516272-A (GB)
Title: Improvements in or relating to massaging or pressure applying apparatus
IPC: A61H23/04
Filed: 1938-07-25
Abstract: 516,272. Massaging-apparatus. HUNT, W. T. July 25, 1938, No. 22008. Addition to 483,132 [Class 81 (ii)] Pneumatic massaging apparatus as disclosed in the parent Specification is provided with means for braking the air-distributing piston disposed externally to the cylinder and capable of adjustment during operation. The piston 6, which is operated by the inlet and outlet pipes 1, 2 of an air pump, to supply air to pipes 7 terminating in the air cushions 8 which apply pressure to the desired part of the body, is provided with a rack bar 10 engaged by a toothed wheel 12 external to the cylinder 5. The wheel is loosely mounted on a flanged sleeve 13 which in turn is mounted oh a spindle 14 carrying the screw nut 25 and spring 23. A leather washer 16 is interposed between the sleeve 13 and stationary disc 17. The upper end of the sleeve 13 carries a rachet 18 engaged by a pawl 20 carried by the toothed wheel 12. Thus, during the downward movement of the pistons, the rack 10 rotates the wheel, and with it the sleeve 13 owing to the ratchet. The resistance can be varied by screwing up the nut 25 to increase the pressure of the leather washer on the disc 17. During the return movement of the piston, the pawl moves freely over the ratchet and the sleeve 13 does not move.
Patent GB-1280787-A (GB)
Title: Capacitance meter
Inventor: PAULKOVICH JOHN
IPC: G01R27/26
Filed: 1971-04-19
Abstract: 1280787 Measuring capacitance J PAULKOVICH 19 April 1971 [18 Feb 1970] 22020/71 Heading G1U To measure an unknown capacitance 17, Fig.2 by comparison with a reference capacitance 15, one of the capacitances is charged from a constant current source 13 and simultaneously a current is applied to the other of such magnitude as to maintain a fixed linear relationship between the voltages across the two capacitances. This latter current will be constant and indicative of the unknown capacitance 17. Periodically, both capacitances are discharged (11) and the charging process re-started. In Fig.4 the constant current source comprises an f.e.t. Q4 which is associated with several current-determining resistors R5-R11 and reference capacitors CR2-CR5 to provide different measuring ranges. An emitter follower Q5 maintains the voltage across the unknown and reference capacitances equal, diode D7 in the reference capacitor path compensating for the base-emitter volt drop of Q5. The emitter follower current is measured by a meter M2 protected by a diode D4. The unknown and reference capacitances are periodically discharged via diodes D5, D6 by a unijunction transistor Q3 acting as part of a relaxation oscillator. In modifications: (i) a constant current diode provides the constant current source; (ii) emitter follower transistor Q5 is replaced by an f.e.t.; (iii) unijunction transistor Q3 is replaced by a four layer diode, a diac or an ovonic threshold  diode.
Patent GB-1321941-A (GB)
Title: Retaining pin for retaining pad backing plates in the brake  housing of a disc brake
IPC: F16D55/22
Filed: 1971-04-19
Abstract: 1321941 Disc brakes; retaining pins ALFRED TEVES GmbH 19 April 1971 [21 Feb 1970] 22025/71 Headings F2E and F2H In a spot-type disc brake a pair of pads and a hold-down cross-spring are held in position by virtue of their engagement with a pair of pad retaining pins 1 which are stamped from sheet metal and which engage in slots in the tops of the backing plates of the pads and which pass through locating holes 10 in a brake housing which straddles the disc. The pin 1 of Figs. 1, 2a includes a latch 2 bent back towards the shank of the pin 1, which latch 2 has a nose 3 which snaps over an edge of the locating hole 10 to hold the pin 1 in place: the end 4 of the pin 1 is reduced in size. In the embodiment of Fig. 3 (not shown), the latches (2) of two pins are joined by a cross-piece (5). Fig. 4 shows a pin formed with recesses 7 in its shank and each recess 7 can engage the hold-down spring 12 to aid location of the pin: the widened end 8 of the pin fits into a locating hole 10. Fig. 5 shows a pin with a tang 9 which engages an inner wall of the brake housing adjacent the hole 10 and Fig. 6 (not shown) has the wider end (8) of the pin further widened around a punched hole (11).
Patent GB-625549-A (GB)
Title: Mining machine
IPC: E21C29/10
Filed: 1947-08-08
Abstract: 625,549. Coal-cutting machines. JOY MANUFACTURING CO. Aug. 8, 1947, No. 22054. Convention date, Oct. 12, 1938. [Class 68(i)] Moving means for a coalcutting machine include a gear connectible through a friction clutch to a cable winding drum, and means for moving said gear either into mesh with a driving gear, or into engagement with stationary locking means so that the clutch may act as a brake for the drum. A motor 14 drives, through bevel gears 15, 16, the cutter chain 5 and a vertical shaft 18, the latter driving a transverse shaft 21 through worm gearing 19, 20 ; one end of shaft 21 may drive the feed drum 6 through gearing 22 ... 26, while the other end carries a driving gear 27 adapted to mesh with a gear 28 on a stub shaft 29, Fig. 6, on a swingable frame 30 pivoted at 31 to the machine frame. Journalled on the stub shaft 29 and the hub of the gear 28 is a guiding drum 7 connectible in driving relation to gear 28 by a disc clutch 33 operable by pressure fluid acting through piston 34 and levers 36. A lever 37, Figs. 1 and 5, on the swingable frame 30 has a slot 45 engaged by an eccentric pin 44 on a shaft 43 rotatable by a pivoted lever 47, whereby the gear 28 may be freed from the gear 27 and engaged with a fixed gear segment 39, clutch 33 then acting as a brake to control paying-out from the drum 7. Notches 48, 49 are engageable by lever 47 to hold the parts in adjusted position. The feed drum 6 is similarly swingable to connect it to its driving means.
Patent GB-1087543-A (GB)
Title: Improvements relating to gas-cushion vehicles
Inventor: HUNT ROWLAND DEVILLE
IPC: B60V1/14
Filed: 1964-05-28
Abstract: 1,087,543. Air cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. June 28, 1965 [May 28, 1964], No. 22202/64. Heading B7K. An air cushion vehicle 30 is propelled by one or more fans 32 discharging through nozzles 35 and rotatable about shafts 33, whereby the direction of thrust of the propulsion units or fans may be varied to control the vehicle. Fans pivotable about horizontal axes are described to control pitch of the vehicle and in a further embodiment the fans are carried by a universally adjustable mounting.
Patent GB-824141-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B9/58
Filed: 1958-10-03
Abstract: 824,141. Photographic cameras. THOMPSON, W. H. G. Oct. 3, 1958, No. 22254/57. Class 98(1) [Also in Group XL(b)] A camera. includes a photocell in a tubular housing so that, on taking a self portrait, the operator may locate himself with respect to. the camera by shining a light towards it. The photocell is arranged to receive only light coming from in or near the optical axis of the camera objective and to initiate the release of the shutter. Preferably, a photovoltaic cell operates a relay to energize a battery operated electro-magnetic shutter release device and sound a buzzer. The shutter may be operated on a delayed action self-timer or a time delay relay may be used to energize the device and a separate relay be provided to operate the buzzer until the shutter has been released.