baber/WOPTO huggingface dataset:
Patent GB-792754-A (GB)
Title: Method and apparatus for cold pressing metal products
IPC: B21K1/00
Filed: 1956-03-07
Abstract: 792,754. Forging; shearing; making percussion primers. SCHONDELMAIER, C. March 7, 1956 [March 10, 1955], No. 7088/56. Classes 83 (2) and 83 (4). A metal product 1 having a flattened or profiled web portion 4 is made by cold pressing a rod-shaped blank 6 with a pair of transversely acting die stamps 7, 8 which indent the blank transversely and cause it to stretch longitudinally without producing any substantial increase in diameter thereof. The rod 6 which may be of circular or polygonal cross-section is inserted into a vertical channel 12 and rests upon a solid base 11 thereof, Fig. 7 (not shown). The die 8 is stationary and is mounted in the side wall 13 of the channel. The die 7 is secured to a reciprocating member 14. Both dies have end portions 9, 10 for indenting the blank; the working ends of these portions may be flat or curved or may have steps or recesses therein dependent upon the shape of the web 4 to be formed. The articles are produced in a continuous process and are severed from the rod simultaneously with the next pressing operation, by a fixed shear blade 15 co-operating with a reciprocating shear blade 16, having its forward edge 16<SP>1</SP> embracing the body of the article to be sheared, secured to the member 14. A spring- loaded plunger 17 moves the rod 6 to the left after pressing. The pressed article is preferably used as an intermediate product in the manufacture of percussion primers for projectiles, Figs. 8, 9 (not shown).
Patent GB-513264-A (GB)
Title: Improvements in or relating to tunnelling
IPC: E21D9/08
Filed: 1938-03-07
Abstract: 513,264. Wrenches. PARKER, L. F. March '7, 1938, No. 7131. [Class 61 (iii)] [Also in Groups XXI and XXX] A tunnelling machine comprises a shield annulus with a rear plate 2 carrying an annular track formed of opposed U-plates 22, 22x, a carriage 23 being carried by rollers within the track and moved on the latter by a motor through worm gearing 28 and rack and pinion gearing 21, 25; the carriage carries a swinging bracket 33 supporting a universally-pivoted bracket 36 with a pivoted member 37 carrying a head 37x adapted to hold the nuts of the lining bolts 38 while the bolts are turned.
Patent GB-549293-A (GB)
Title: Safety razor
IPC: B26B21/52
Filed: 1942-05-27
Abstract: 549,293. Safety-razors. KRIGBAUM, A. D. May 27, 1942. No. 7173. [Class 30] A safety-razor comprises a guard 2 hinged at one end to a plate 1 and retained by a spring latch 7, the guard having a handle member 9 spaced above the centre line of the guard to form finger room, the handle having a free end adjacent the thumb which applies pressure to the guard when shaving. The plate 1 has two projections 6 engaging apertures in the blade 4 and guard 2.
Patent GB-885644-A (GB)
Title: Improvements in package and like binding mechanism
Inventor: JONES MAURICE HOLFORD
IPC: B65B13/34
Filed: 1958-03-06
Abstract: 885,644. Seals and sealing. POWER STRAPPING SYSTEMS Ltd. June 8, 1959 [March 6, 1958], No. 7193/58. Addition to 698,181. Class 146(2) [Also in Group XVII] The invention relates to improvements to the machine described in the parent Specification. Sealing Means. The plate 2, Fig. 1, that previously extended right across the machine is now shortened to expose a connecting device in a housing 100 on the middle plate 3, such exposure simplifying adjustment and servicing. The flexible binding material, when looped and tensioned around a package has its overlapping ends secured together by a sleeve of strip material Within the housing 100 are a pair of outer jaws 112, Fig. 3, that rise to sheer off a length of binding strip material fed from feed rollers 130, 131, Fig. 1, and fold it upwardly about the ends of the loop. The jaws 112 then pivot towards each other to close the strip material around the ends of the loop, and the inner jaws 113 then form tongues in the edges of the sleeve to effect a secure joint.
Patent GB-545954-A (GB)
Title: A method of recovering a stable liquid composition from a foamed aqueous rubber dispersion and of producing sponge rubber from the composition so obtained
IPC: C08L21/00
Filed: 1941-06-09
Abstract: 545,954. Recovery of foamed rubber from mixing apparatus &c. UNITED STATES RUBBER CO. June 9, 1941, No. 7244. Convention date, June 13, 1940. [Class 70] Foamed rubber latex &c. containing zinc oxide and a silicofluoride of an alkali metal or of ammonia is recovered, e.g. from paddles and wires of mixing apparatus by dispersing it in an aqueous medium containing an alkali metal &c. hydroxide and a substance capable of precipitating zinc ions, e.g. borax or other alkali metal &c. tetraborate, carbonate, or metaphosphate. The latex &c. may be foamed as disclosed in Specification 332,526, [Class 70]. In an example foam in a mixer was dispersed before it had time to set, and the particles disseminated in a wash liquor containing 2 per cent. potassium. hydroxide and 2 per cent. borax, and the liquor re-used until a concentration of 40 per cent. rubber had been built up and 5 per cent. of such rubber re-used in fresh latex.
Patent GB-815498-A (GB)
Title: Improvements relating to pressure helmets breathing masks and the like
IPC: A62B18/04
Filed: 1954-03-12
Abstract: 815,498. Respiratory appliances. TAYLOR, E. H., and BAXTER WOODHOUSE & TAYLOR Ltd. June 1, 1955 [March 12, 1954], No. 7280/54. Class 81 (2). In a pressure helmet a vizor is mounted for movement into and out of sealing engagement with an aperture opposite the eyes. In opening, the first movement of the vizor is forwardly away from the helmet to break the seal and the second movement is upwardly away from the opening. As shown, Fig. 1, the wearer moves the vizor bar 5 up or down in order to open or close the vizor 2, which in the closed position, fills the opening 4. Sealing is effected between 2 and the shell 1 by the deflatable means 16. A sun vizor 6 is movable independently, between 2 and 5. The helmet consists of a fibre front 1 which curves toward the front and top of the head and a rear part of fabric material 12 closed by a sliding fastener. Mounted on 1 are the intercommunication lead-in 8, oxygen supply pipe 11 and the emergency oxygen inlet 15. Pressurization is effected by an inflatable envelope (not shown) between 1 and 12 which envelopes the head and part of which forms the seal 16, and which includes an oxygen mask covering the nose and mouth. When 2 is closed on to a seal 16, the space in front of the. eyes can be maintained at the required pressure. Unsealing action. Movement of the bar 5 causes the vizor 2 to move about hinges 3. In one embodiment of hinge 3, Figs. 6, 7, movement of bar 5 upwards rotates shaft 29, through gearing 40, 41 and causes cranks 29 to move outward and forward thereby moving forward the vizor frame 20 away from engagement with seal 20 with further movement upwards of 5, the rotation of 29 is stopped by the engagement of the cam and stud 33, 36, a locking mechanism is released by 33 and the upward pressure on 5 carries the hinge cover 26 round the axis of spindle 25 and raises 2 above 4, against the action of the spiral spring 47. In a second embodiment, not shown, the cam and stud 33, 36 is replaced by a cam which engages with two slots in the case and base plate. In a third embodiment, Figs. 18, 19, the support rods 61 of the vizor frame 20 are urged along the slots 62 by rotation of the eccentric 53 inside the internally threaded collar 60 by the initial unsealing movement of vizor bar 5. Subsequent raising of the vizor takes place against the action of spring 70. In all the embodiments, the vizor is held in the open position by a spring catch device (not shown). Specification 815,499 is referred to.
Patent GB-841444-A (GB)
Title: Improvements in and relating to the combination of an exhaust boiler and a silencer for internal combustion engines
IPC: F01N5/00
Filed: 1958-03-06
Abstract: 841,444. Heating steam boilers by waste gases. GOTAVERKEN A. B. March 6, 1958 [June 17, 1957], No. 7328/58. Class 123(2) [Also in Group XXVII] A combined steam boiler and silencer located in the exhaust gas system of an I.C. engine consists of a vertically mounted, double-walled, cylindrical vessel having an inner silencer chamber 4 surrounded by an annular heat-exchange chamber 3 in which is disposed a number of vertical, serially-connected steam generating tubes 5. An inlet and outlet pipe 6 extends vertically through the chamber 3 and is divided internally by a sloping partition 7. Exhaust gas enters the bottom of the pipe 6 and flows into the chamber 3 through a side opening 8 in the pipe. A pivoted valve 10 proportions the gas flow between the chamber 3 and a by-pass 11 through which gas may flow directly into the silencer chamber. Gas flowing around the chamber 3 heats the tubes 5 to generate steam and enters the pipe 6 through an opening 9, the gas discharging from the unit through the outlet at the top of the pipe. Gas entering the chamber 11 is directed tangentially through a screen 12 which arrests the larger entrained solid particles into the chamber 4 in which smaller particles are cooled and separated by contact with the wall 2 of the chamber. This gas flows from the chamber 4 into the outlet end of the pipe 6 through an opening 13 therein. The considerable expansion of the gas which occurs as it enters the chamber 4 and the fact that this chamber is enclosed by the chamber 3 which is covered with a heat insulation material ensures efficient silencing.
Patent GB-659446-A (GB)
Title: Cutters for and method of producing gears
IPC: B23F9/10
Filed: 1949-03-17
Abstract: 659,446. Gear-cutting. TUGWOOD, J. R. (Gleason Works). March 17, 1949, No. 7345. [Class 83 (iii)] A face-mill gear cutter comprises outside and inside cutting surfaces of curved profile shape with their centres of curvature offset from the cutter axis by amounts proportional to the respective radii of curvature. Thus, the centres 34, 35 of the surfaces 32, 33 are offset from the cutter axis 36 by amounts proportional to the radii 38, 39. The blades are attached by screws 13 and adjusted by blocks 15 and wedges 16, which adjustment enables the effective pointwidth 31 of the cutter to be varied if alternate blades have opposite side-cutting edges. The cutter produces teeth which are eased-off at the top and bottom of the profiles and are also curved longitudinally to have less than fulllength contact. The profile ease-off is either constant or increases with point-width. The lengthwise tooth bearing is decreased with increasing point-width. A set of such cutters is provided to produce a large range of gears. As a result of the construction of the cutters, a line passing through O<SP>1</SP>, the intersection of the line 34-35 with the cutter axis, intersects both cutting surfaces at the same angle of inclination. The cutter is therefore positioned, during cutting, so that the normals to the cutting- surfaces are equally inclined to the pitch-plane of the gear represented by the cutter, and with the point 0<SP>1</SP> lying in its pitch-plane. The distance of the cutter axis from the axis of the gear which it represents, or the cradle, and the position of the cutter lengthwise of the cradle axis are the same for both gears of a pair. The tooth depth of the gear to be cut depends on the normal pitch and a cutter of given point-width has to cut the same average dedenda and depth regardless of tooth combination. Gear pairs are also cut with unequal dedenda, the pitch angles of the gears represented by the cutter being increased and decreased respectively by the dedendum angle increment. One gear may be form cut by a cutter which is then used to generate the pinion, the pinion being moved with a reduced ratio of roll on a larger pitch circle than that of the gear represented by the cutter.
Patent GB-308450-A (GB)
Title: Improvements in and relating to wrist watch straps
IPC: A44C5/16
Filed: 1928-03-09
Abstract: 308,450. Blacklock, R. March 9, 1928. Watches, securing to wrist.-The ends of a wrist watch strap a are clipped by clips c to the lugs d of a watch e and are covered by extensions f on the strap a which pass through the lugs d and are turned back over the clips, being retained in position by loops g. The clips c may be secured to the strap by clips h which pass through slits in one ply of the strap, the outer ply extending beyond the clips to form the extensions f.
Patent GB-609272-A (GB)
Title: Improvements in or relating to lighting fittings
IPC: F21V7/09
Filed: 1946-03-11
Abstract: 609,272. Electric lighting fittings. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 11, 1946, No. 7474. Convention date, March 14, 1945. [Classes 75(ii) and 75(iv)] A lighting fitting comprises a screen 13 adapted to transmit or reflect light rays from a source 2, and a reflector 1 formed with figurations 6 such as depressions, each figuration forming an image of the light source and having an area of at most 1/500 of the area of the reflector opening 5. In a plane parallel to the opening 5 and situated at distance a below it equal to twice the diameter of the opening, the average surface area of the light spots formed by the depressions is at least 1/10 of the area of the opening 5, and preferably 75 per cent of the light flux reflected by the reflector 1 falls within a circle in this plane having a radius b equal to two and a half times the diameter of the opening 5. Preferably the radius of a depression is greater in axial section than in horizontal section. The screen 13 may be translucent and diffusing or may be reflecting to direct rays partly through an upper opening 4 and partly onto the reflector 1. The reflector may consist of thin reflecting material applied to a support of moulded fibrous material. Specification 457,199 is referred to.
Patent GB-577719-A (GB)
Title: Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
IPC: B29C65/04
Filed: 1944-04-22
Abstract: In moulding &c. apparatus for heat- and pressure-treating thermoplastic or thermosetting insulating material by a high-frequency electric field, surface chilling and loss of heat are reduced by providing the electrodes with a facing of high-loss, heat-stable, insulating material of cellular form such as porous cordierite, porcelain having similar qualities, a foamed resin of the phenol-, cresol-, melamine-, or urea-formaldehyde type, or of foamed polyvinylidene chloride where it is not plasticised by the heated material.  Where a foamed plastic is used, the outer surface of the facing is preferably covered with a skin of a non-cellular, high-loss, heat-resistant material.  The facing may be secured by an adhesive such as polyvinyl acetal, and preferably has a thickness of about .01 inches.
Patent GB-540739-A (GB)
Title: Improvements in or relating to photoelectrically sensitive electrodes
IPC: H01J40/06
Filed: 1940-04-26
Abstract: 540,739. Photo-electric surfaces. BAIRD TELEVISION, Ltd., and SOMMER, A. April 26, 1940, No. 7530. Addition to 532,259. [Class 39 (i)] A method of making a photo-electric surface having a spectral sensitivity approximating that of the human eye, consists in depositing on a support, which may be the glass wall of an evacuated envelope, a layer of bismuth, which is then oxidized by heating in an atmosphere of oxygen or by electric discharge in oxygen. Silver, and then an alkali metal such as caesium, are evaporated on to the bismuth oxide layer at a temperature of 150-200‹ 'C. Preferably only sufficient alkali metal is used to reduce all the bismuth oxide. The composite layer is then baked and superficially oxidized until the optimum or desired spectral sensitivity is obtained.
Patent GB-557571-A (GB)
Title: A method of covering wire with embroidery
IPC: D02G3/36
Filed: 1942-06-03
Abstract: 557,571. Covering cores by winding; embroidery. HARRIS, B., and HEBBEN & HARRIS, Ltd. June 3, 1942, No. 7536. [Class 109] [Also in Group VII] Wire is covered with embroidery or braid by feeding the wire through the hollow needle bar of an embroidery machine and at the same time feeding the braid or embroidery material from a carrier attached to the rotary vertical centre tube of the machine. A Cornely, Lintz or Eckhardt machine may be employed, and filling material may be fed through the needle bar with the wire. The embroidery may be sewn directly to the material to which it is intended to be applied, or alternatively, may be sewn to vanishing muslin.
Patent GB-610563-A (GB)
Title: Generating vapours from solids
IPC: C07C45/55
Filed: 1946-03-11
Abstract: <PICT:0610563/III/1> Vapours are quantitatively generated from solids by feeding a suspension of finely-divided particles of the solid in a liquid of negligible vapour pressure at a controlled rate to a hot zone, and withdrawing the evolved vapour through a heated conduit. The method may be used for depolymerizing solids such as paraformaldehyde and polystyrene, and for subliming others such as p phosphorus pentoxide, phosphorus pentachloride and salicylic acid. Suitable carrier liquids are the alkyl phthalates, castor oil, tricresyl phosphate, and the polysilicones.  Catalytic materials, such as aluminium chloride, may be introduced into reaction systems in quantitative amounts by the method of the invention. Formaldehyde can be supplied in a controllable continuous flow for the formation of resins.  A slurry of the finely-divided solid in a liquid which has negligible vapour pressure at the temperature of generation of vapour from the solid, is added to feed tank 10 fitted with an agitator 12.  The slurry is then fed, by metering gear pump 16, through line 13 and preheater 14 into flash chamber 15 which is heated to the vapour generation temperature by oil bath 17 heated by coil 18.  The vapour formed is withdrawn through conduit 19 which is heated by steam jacket 20, and the fluidizing liquid is periodically discharged, via valve 24, through cooled drain line 21.ALSO:Vapours are quantitatively generated from solids by feeding a suspension of finely-divided particles of the solid in a liquid of negligible vapour pressure at a controlled rate to a hot zone and withdrawing the evolved vapour through a heated conduit.  The method may be used for depolymerizing solids such as paraformaldehyde, polystyrene and polymethyl methacrylate. Suitable carrier liquids are the alkyl phthalates, castor oil, tricresyl phosphate and the polysilicones.ALSO:Vapours are quantitatively generated from solids by feeding a suspension of finely-divided particles of the solid in a liquid of negligible vapour pressure at a controlled rate to a hot zone, and withdrawing the evolved vapour through a heated conduit. The method may be used for depolymerizing solids such as paraformaldehyde, polystyrene and polymethyl methacrylate; and for subliming others such as acetamide, borneol and salicylic acid. Suitable carrier liquids are the alkyl phthalates, castor oil, tricresyl phosphate and the poly <PICT:0610563/IV(b)/1> silicones.  A 13.3 per cent slurry of powdered paraformaldehyde in di-(2-ethyl hexyl) phthalate is fed, by metering gear pump 16, through preheater 14 into flash chamber 15 which is heated to 175-200 DEG  C. by oil bath 17 and steam coil 18.  Formaldehyde is withdrawn through conduit 19 which is heated by steam jacket 20, and the phthalate is periodically discharged, via valve 24, through cooled drain line 21. Thus, formaldehyde can be prepared in a controllable continuous flow for a chemical reaction, e.g. the formation of a resin.
Patent GB-287111-A (GB)
Title: Improvements in a method and device for guiding plastic rolled glass plates over inclined surfaces
IPC: C03B13/18
Filed: 1928-03-12
Abstract: 287,111. Naamlooze Vennootschap Mij tot Beheer en Exploit van Octrooien; March 15, 1927, [Convention date]. Rolling.-Relates to the method of making plate glass in which the plate, as it emerges from the forming-rolls a, slides over an inclined plane c, d on to a device, such as a moving table, which conveys it to the annealing oven. The invention consists in mounting a roller f with its axis transverse to the direction of movement of the glass and its surface protruding slightly above the surface of the plane c, d as shown. The roller, which may be rotated in either direction, engages the glass plate from below, and either by assisting or retarding its movement, as required, assists in preventing distortion of the still plastic glass. Instead of a single roller, a. number of rollers or endless bands may be used.
Patent GB-925685-A (GB)
Title: Improvements in or relating to an automatic light switching system in vehicles
IPC: B60Q1/14
Filed: 1960-03-03
Abstract: 925,685. Automatic light-switching systems for vehicles. A. R. AUGE, and I. R. SANROMA. March 3, 1960 [March 4, 1959; Nov. 25, 1959], No. 7585/60. Drawings to Specification. Class 40 (3). In an automatic light switching system for vehicles each vehicle is provided with a transmitter and receiver so that upon a first vehicle receiving non-visible radiation transmitted by a second vehicle the headlights of the first vehicle are switched to the dip position. The transmitted radiation is preferably infra-red or ultraviolet, and may be continuous or pulsed. The radiation is confined forwardly of the vehicle over an angle which is greater than that over which there is danger of dazzle from an approaching vehicle, and the receiver receives radiation over a somewhat smaller angle than that of the transmitted radiation. In order to dip the lights of a following vehicle, each vehicle may have a second radiator which radiates rearwardly over a small angle. The receiver may comprise a silicon cell and the transmitter has an optical system including filters to absorb visible radiation. In fog the lights may be permanently dipped-in this case a visible or audible indication of an approaching vehicle is given.
Patent GB-974747-A (GB)
Title: Method of and apparatus for the generation of pressure inside an enclosed cavity
IPC: B01J3/06
Filed: 1961-03-02
Abstract: <PICT:0974747/C1/1> A plastically deformable metallic cartridge containing graphite to be compressed for diamond formation to a pressure of 100,000 kg./ sq. mm. is arranged in a cavity (2) in a die so that at least one end portion (3) of the cartridge projects beyond the end face (5) of the die, and pressure is applied to the cartridge to bring it wholly within the die, and to the die to deform the latter around the cavity and increase the load supporting capacity of said die (see Division B1).  Alternatively the cartridge may be brought only partially within the die, in which case, however, the part not within the die must be wholly radially restrained, e.g. by means of plastically deformable, stress-hardenable rings placed around said die.  Specification 943,538 is referred to.
Patent GB-716997-A (GB)
Title: Improvements relating to automatically adjustable control means for internal combustion engines
Inventor: LEUNIG GUNTHER
IPC: F01L13/08
Filed: 1952-03-25
Abstract: 716,997. Regulating. DAIMLER-BENZ AKT.-GES. March 25, 1952, No. 7681/52. Class 7(6) A valve-operating cam shaft is adjustable angularly or axially to vary the valve time or period of valve opening in accordance with engine speed by means of a speedresponsive govenor, e.g. a centrifugal governor and in accordance with engine load by means of a pressure responsive device actuated by the pressure in the engine admission passage. The cam shaft preferably controls the admission valves and the centrifugal governor and pressureresponsive device may be connected to a two-armed lever with an adjustable pivot, which lever may actuate an axially slidable helically grooved sleeve connecting the cam shaft to its driving shaft. The movement of the sleeve causes angular adjustment of the cam shaft relative to the driving shaft, which adjustment may cause the admission valves to open and close later as the speed rises.