baber/WOPTO huggingface dataset:
Patent GB-879412-A (GB)
Title: Disk brake
IPC: F16D55/00
Filed: 1960-06-01
Abstract: 879,412. Disc brakes. BENDIX CORPORATION. June 1, 1960 [June 3, 1959], No. 19418/60. Class 103 (1). A disc brake includes a pair of friction members 52 located in a stationary housing 16 having two laterally spaced sides 40 connected by an arcuate portion 34 straddling a portion only of a periphery of the disc, each of the friction members 52 being movable into engagement with a respective face of the disc by fluid motor means carried by a side of the housing; in such a disc brake anchoring bosses 66 and supporting lugs 62 are formed integrally with each of the housing sides to support slidably and confine the friction members during braking, the friction members, bosses and lugs being so proportioned that the friction members are disengageable from the bosses and lugs by lateral movement for removal from the housing upon pivotal movement of the housing about one of the mounting legs of the housing to swing the friction members radially beyond the disc. Each friction member is supported and confined by a structure including one anchoring boss constructed in the inner surfaces of the corresponding housing side, spaced supporting lugs extending laterally from the lower edge of the side and an abutment formed along the upper edges of the side at the end of the housing opposite to the anchoring boss. This form is cheaper to construct than the form of caliper known hitherto. Specification 783,083 is referred to. Reference has been directed by the Comptroller to Specification 688,382.
Patent GB-584119-A (GB)
Title: A work clamping and locating device
IPC: B25B5/10
Filed: 1945-07-30
Abstract: 584,119. Work - holders. DYSON, A. July 30, 1945, No. 19464. [Class 83 (iii)] [Also in Group XXIII] A work-clamping device comprises a plate or base A with a range of holes to receive the work H which holes may each be of two diameters such as B, B or C, C made available for use by reversing the plate and are surrounded by tapped holes D adapted to receive studs E with fulcrum pins G for clamping arms F operated to hold the work down by clamping screws J, the arms having slots F<1> notched at F<2> for adjustable engagement with the fulcrum pins.
Patent GB-813060-A (GB)
Title: Improvements in or relating to holders for vehicle licences and the like
IPC: B60R7/04
Filed: 1956-06-22
Abstract: 813,060. Holders for vehicle licences. ORME, F. June 21, 1957 [June 22, 1956], No. 19465/56. Class 73 [Also in Group XXXII] A holder for a vehicle licence is held in position adjacent the windscreen or side window of a vehicle by means of a permanent magnet incorporated in the holder and adhering to ferrous metal material on the instrument panel or window frame. As shown, a vehicle licence 3 and transparent window 4 are held in a recess in the holder adjacent the windscreen 9, the holder having a foot portion with a surface 5 shaped to conform to the instrument panel top 6 which is in contact with a magnet 7 located in a recess in the foot. The foot portion has a toe 8 which prevents rocking of the holder and necessitates a movement in a direction substantially normal to the surface engaged by the magnet in order to remove the holder therefrom. The magnet 7 may be adjustably mounted in the recess in the foot portion and the licence holder may be pivotally mounted on the foot portion so that it can tilt to any angle to lie flat against the windscreen. The toe portion 8 may be made slidably adjustable in the foot.
Patent GB-388991-A (GB)
Title: Improvements in or relating to screw fan blades
IPC: F04D29/38
Filed: 1932-07-09
Abstract: 388,991. Screw fans. MEY, R. DE, 198, Avenue du Roi, and HAVARD, P., 36c, Rue Jourdan, both in Brussels. July 9, 1932, No. 19473. Drawings to Specification. [Class 110 (i).] The constant-pitch blades of a screw fan are constructed so that the relative thickness, the relative curvature and the width of the crosssections of the blade are a maximum at the root and decrease progressively from the root to the tip. In a modification, this decrease may be stopped before the tip is reached and the remaining portion of the blade based on constancy of these factors.
Patent GB-212187-A (GB)
Title: Improvements in or relating to headwear for use by motorists or aeronauts
IPC: A42B1/06
Filed: 1923-07-31
Abstract: 212,187. Hope Manufacturing Co., Ltd., and Brown, H. July 31, 1923. Helmets; accessories.-A motorist's helmet or like head covering of the kind having a forehead flap or peak I is provided with a detachable transparent eye protector B independent of the flap, with fur or other soft material applied to its edges. The protector is capable of being rolled up into small compass when not required; is preferably of celluloid and provided with tabs C engaging the interior of the helmet by press fasteners.
Patent GB-627818-A (GB)
Title: Improvements in or relating to devices for sowing seeds
IPC: A01C7/04
Filed: 1947-07-22
Abstract: 627,818. Seed sower. GALLAGHER, T., and WILLATS, H. R. July 22, 1947, Nos. 19589 and 23195. [Class 6(i)] [Also in Group XVII] A seed-sowing device comprises a tubular container divided transversely into two sections 2, 5 by a flexible diaphragm 7, a reciprocating plunger 16 having pockets 17 therein, which plunger picks up seed from one section 2 of the container and carries it to the other section so that the seed is released. As shown the plunger 16 has pockets 17, 17a, 17b of different sizes and an adjustable sheath 24 having an opening 25 is provided so that any pocket may be uncovered by the sheath. To set the sheath in its correct angular position a dial 26 suitably calibrated is provided which co-operates with a fixed index. Alternatively the container may be provided with notches 28 co-operating with a handle 29 in the sheath. The sheath may be provided with a bevel gear which co-operates with a bevel gear, on the container, operated by a handle for setting the sheath. A groove may be used instead of pockets. The machine may be operated by hand or may be fixed by bracket 38 to a cultivator and the plunger reciprocated by power from a motor or cultivator hand-wheel.
Patent GB-298510-A (GB)
Title: Improved apparatus for ventilating rooms and inducing a draught in chimneys
IPC: F24F7/00
Filed: 1927-07-07
Abstract: 298,510. Bard, P. July 7, 1927. Divided on 294,364, [Class 25, Chimneys &c.]. Ventilators; valve apparatus.-Apparatus for ventilating rooms and inducing a draught in chimneys consists of a box 2G which is disposed adjacent the chimney in the upper part of the room and is provided with one apertures 16 leading to the room and a second and lower aperture 20 communicating with the chimney, and means are provided for operating simultaneously the shutters 27, 27<1> for such apertures. The shutters are connected by means of pivoted links 45, 48, 49, the central link 45 being pivoted on a vertical post 47. The shutters are adapted to be closed against the action of a spring 51 by a chain 25 connected at 44 to the lever 45. A conduit 43, adapted to be mounted within the chimney, is mounted on flanges on the cover member 26<1> of the casing 26 and such cover member 26' is adapted to be readily detached.
Patent GB-773442-A (GB)
Title: Improvements in preparation of pyrrolidone
IPC: C07D201/08
Filed: 1955-07-07
Abstract: Pyrrolidone is prepared by hydrogenating one or more alkyl b -cyanopropionates using a hydrogenation catalyst at 70 DEG  to 100 DEG  C. and 50 to 200 atmospheres pressure in the presence of ammonia. Up to 4 mols., preferably from 0.8 to 1.7 mols. of ammonia per mol. of b -cyanopropionate may be used.  Preferably, Raney nickel is used as catalyst in the proportion of 5 to 25 parts by weight per mol. of alkyl b -cyanopropionate, and the reaction is effected in an alkanol, such as methanol, ethanol, propanol, butanol or isopropanol. The alkyl b -cyanopropionate may be the methyl, ethyl, propyl, isopropyl or butyl ester or a mixture of esters. Detailed examples are given of the hydrogenation of (1) methyl b -cyanopropionate, and (2) ethyl b -cyanopropionate, in ethanol in the presence of Raney nickel and ammonia, to give pyrrolidone.
Patent GB-968067-A (GB)
Title: Reversible internal combustion piston engines having displaceable camshafts
IPC: F02D27/00
Filed: 1963-05-20
Abstract: 968,067. Reversing. SULZER FRERES S.A. May 20, 1963 [May 22, 1962], No. 20008/63. Heading F1K. A reversible internal combustion engine comprising a cam-shaft 3 which is displaced during reversal has means for preventing displacement of the cam-shaft in an engine speed range below a predetermined speed. The means may comprise an element which is actuated by a speed responsive device and prevents operation of the cam-shaft displacement mechanism below a predetermined speed. As shown the cam-shaft is controlled by a fluid pressure operated piston 13. The cylinder 14 is connected by conduits 16, 17 to the oil chambers of oleo-air tanks 18, 19. As long as the engine speed and hence the quantity of oil delivered by the pump 28 are low no appreciable pressure to move the piston 26 of the control valve 22 can build up in the conduit 27 in front of the throttle 32. Only when the speed reaches a certain level does the pressure operate the control valve. The pump may be a lubricating oil or fuel pump. The hydraulic speed sensitive device could be replaced by a mechanical device such as a governor which could actuate a valve corresponding to the valve 22 directly or an electrical speed sensitive device which could control a solenoid operated valve corresponding to the valve 22. Alternatively pneumatic operation could be employed. A latch may be pushed into the path of a part which effects or causes the displacement of the cam-shaft. An embodiment is described in which a latch controlled by a centrifugal governor co-operates with a member attached to the cam-shaft. The latch could be operated by a solenoid under control of an electrical speed sensitive device replacing the mechanical governor. Swiss Specification 348,575 is referred to.
Patent GB-958726-A (GB)
Title: Electrical control switch with snap action
IPC: H01H5/18
Filed: 1962-05-24
Abstract: 958,726. Snap-action switches; actuation of switches. BENDIX CORPORATION. May 24, 1962 [June 7, 1961], No. 20041/62. Heading H2B. [Also in Division G1] A switch comprises a contact carrying arm 10 flexibly supported by a base 12 and biased towards a fixed contact 14, and two snap-acting spring mechanisms which go over-centre when the arm is actuated to break contacts 13, 14, the arrangement being such that the resultant of the spring forces acting on the arm 10 (F+B+B<SP>1</SP>= operating force P) remains substantially constant during its displacement. In a humidistat a length of human hair 39 forms the sensing element and provides the operation force for arm 10<SP>11</SP> through a link 25<SP>1</SP> connected therewith. A second arm 48 provides abutments 211, 22<SP>1</SP> with pivot grooves in which flexible tongues 17<SP>1</SP>, 18<SP>1</SP> struck out from arm 10<SP>11</SP> are located under compression. Abutment 22<SP>1</SP> bears upon the head 57 of an adjustable shaft 55, rests upon projection 68 of the head to give an " on " position, and rests in groove 69 of the head to give an "off" position of contacts 1311, 14<SP>11</SP>. Intermediate these two positions rotation of shaft 55 sets the operating point of the humidistat at a selected relative humidity. Stop 271 for contact 13<SP>11</SP> is rotatable to adjust the control differential of the device. Fixed contact 1411 is mounted on a bimetallic arm 31<SP>1</SP> through which current passes and which bends upon heating in a plane perpendicular to the plane of contact breaking movement of arm 10<SP>11</SP>, thereby providing a contact weld-breaking action. Operating element 3 of the switch may be a thermally responsive or pressure responsive element, or the switch arm may be actuated manually or by electromagnetic or pneumatic means.
Patent GB-220966-A (GB)
Title: Improvements in thermionic devices
IPC: H01J5/54
Filed: 1924-03-26
Abstract: 220,966. Dubilier Condenser Co. (1921), Ltd., (Assignees of Houck, H. W.). March 26, 1923, [Convention date]. Vacuum tubes.-The base 14 of a thermionic valve has an annular conducting band 15 to which an electrode such as an anode is connected, and contacts 18 on the lower face connected with the filament. A restricted portion 13 of the envelope is mounted in the base, and the anode lead is taken up between the portion 13 and the band, and joined to the band at its upper edge. The base extends for a short distance below the lower edge of the band and is slightly tapered as shown at 17. The contacts 18 project for a short distance only beyond the surface of the base or are flush with the surface. Bayonet lugs 19 are provided on the band. The base may be modified for use in valves with more than two electrodes.
Patent GB-314996-A (GB)
Title: Improvements in or relating to heat sensitive elements.
IPC: G01K5/60
Filed: 1929-07-01
Abstract: 314,996. Askania-Werke Akt.-Ges. vorm. Centralwerkstatt Dessau und C. Bamberg-Friedenau. July 7, 1928, [Convention date]. Thermometers. - A heat sensitive device for operating an indicating, recording, or regulating device, is, for facilitating replacement, provided with a protective tube 1 which can be fitted into an opening in the container. The thermal element is of small heat capacity and comprises a thin steel band 2 passing over a support 6 and secured at its two ends. The support 6 is carried by a rod 3 of material such as quartz having a small expansion, which transmits any change in length of the band 2 to the device operated by the thermal element.
Patent GB-723465-A (GB)
Title: Hydraulic thruster for pipe bending machines
Inventor: BUCKLER RONALD WALLACE
IPC: B21D7/00
Filed: 1952-08-11
Abstract: 723,465. Reciprocating pumps. LAWLER, AYRES & CO., Ltd. Aug. 7, 1953. [Aug. 11, 1952] No. 20175/52. Class 102 (1). [Also in Group XXII] A pump for 'supplying fluid to an actuating piston B of a pipe bending machine includes a pump cylinder E extending within a fluid reservoir F, a piston L reciprocated by a manuallyoperated lever P, and a spring- loaded outlet valve O. The piston L is formed with a longitudinal bore M<SP>1</SP> open at one end, through ports M and a filter gauze L<SP>1</SP>, to the reservoir F and provided at the other end with a ball N adapted to close the bore on the forward, operating, stroke of the piston. Manually controlled valves I and K, or in a modification a single valve, control the supply of fluid to the piston B.
Patent GB-1216954-A (GB)
Title: Improvements in and relating to nickel plating
Inventor: SALVAGO GABRIELE
IPC: C23C18/36
Filed: 1969-04-21
Abstract: 1,216,954. Electroless deposition of Ni-Sn-P. G. SALVAGO. April 21, 1969, No.20183/69. Heading C7F. Substrates such as iron are coated with a Ni-Sn-P alloy by electroless deposition from an acid bath comprising a Ni salt, a soluble stannic salt and a hypophosphite. The bath contains 0À01 to 2 moles/l of the stannic salt e.g. stannic chloride and should also contain at least 0À5 moles/l of lactic acid. The Ni salt used in the sulphate and the hypophosphite is that of Na. Coating is effected at 90‹ C. and the examples specify coatings containing <1%, 1À5% and 3% of Sn.
Patent GB-673689-A (GB)
Title: Improvements in or relating to electric battery lamps
IPC: F21L4/00
Filed: 1949-08-03
Abstract: 673,689. Battery lamps. GENERAL ELECTRIC CO. Ltd., and ROBERTS, L. J. Aug. 3, 1950 [Aug. 3, 1949], No. 20231/49. Class 39(ii) A metal casing for an electric battery lamp, for use more particularly as a cycle lamp, 'consists of two parts 10 and 12, one fitting within the other, the rear part 10, which carries the battery 11, being in the form of a shallow box, open at one side and of a depth such that a battery held' therein extends partly from the box, while the front part 12 carries the lamp bulb 13, reflector 14, cover glass 15, and a screw-type switch 33. The bulb is retained in position by screwing its cap through an axial hole in the reflector and into a spring metal strip or bridge 30 which is mounted transversely within the casing part 12 by offsetting its ends and inserting them within slotted lugs projecting inwardly from the side walls of that part of the casing. Interconnection between the two parts of the casing is effected by providing the upper portion of one with a transverse rib 37 which snaps into a groove 26 in the other, the lower portions having a similarly co-operating rib 25 and groove 26. A hinge connection may be provided between the two parts of the casing. An upper contact strip 20 on the battery 11 is held against inadvertent contact with both the switching screw 33 and the casing by locating it beneath an insulating stud 21. Fig. 2, (not shown), mounted on one of the casing parts. A resilient lug 19 on the inner side of the rear wall of the casing engages the upper edge of the battery to hold it in position. A bridge piece 16 is provided for attaching the lamp to a cycle, and a looped carrying handle 35 is arranged to engage behind a lug 36 on the bridge piece when the handle is not in use.
Patent GB-946517-A (GB)
Title: Process for the manufacture of umbrella fabrics from woven polyester materials
IPC: D06C7/02
Filed: 1962-05-25
Abstract: A polyester umbrella fabric is produced by subjecting the fabric to cleaning, drying, embossing, setting, impregnation with a water-proofing agent, drying, and calendering.  Embossing may be with finely fluted or fine-grain crystal rollers.  The steps of embossing and setting may be reversed.  The fabric may be produced from dyed yarn, or may be dyed, cleaned, and dried after embossing and setting and before impregnation.  Dyed fabric may be treated by cleaning with an aqueous solution containing 2 gm/1 of an anionactive detergent and 1 gm/1 of soda for 45 minutes at 50 DEG C., drying on a Palmer felt calender at 120 DEG C. embossing with a crystal embossing roller at 130-135 DEG C. at a pressure of 10 tons per sq. cm., setting on a Morisson machine for 30 seconds at 190-210 DEG C., impregnating with an aqueous solution of 150 gm/1 of Persistol Extra, drying on a Palmer felt calender at 120 DEG C., and calendering between paper and cotton at a pressure of 50 tons.
Patent GB-1079309-A (GB)
Title: Semiconductor rectifiers
IPC: H01L29/73
Filed: 1966-05-06
Abstract: 1,079,309. Semi-conductor rectifiers. SIEMENS SCHUCKERTWERKE A.G. May 6, 1966 [June 15, 1965], No. 20294/66. Heading H1K. A semi-conductor rectifier comprises a mono crystalline silicon body with highly doped (greater than 10<SP>17</SP> atoms per c.c.) end regions of opposite conductivity types and intermediate regions which adjoin to form the PN junction, one intermediate region being uniformly and lightly doped and the other lightly doped adjacent the junction and heavily doped adjacent is associated end region. In the embodiment of Fig. 1, a weakly N-type silicon body 2 (50 to 150 ohm cms.) has a P-region 3 produced by diffusion of aluminium (and possibly also gallium) and two heavily doped regions 5 and 6 of N+ and P+ types respectively produced by alloying gold-antimony foil and aluminium. Molybdenum electrodes 10 and 8 are attached to the contact regions adjacent the highly doped regions. The impurity concentration in P- region 3 varies from approximately 10<SP>14</SP> adjacent the PN junction to about 10<SP>16</SP> or more adjacent end region 6 where the concentration is about 10<SP>19</SP>atoms per c.c. The edge of the PN junction is protected by alizarin lacquer layer 9. The intermediate N zone 2 is 150 to 250Á thick, and P-zone 3, 60 to 100Á, the first portion (7-13Á  'thick) having a relatively small variation in dopant concentration after which the concentration increases steeply until P+ zone 6 is reached. The layers may be produced by epitaxial deposition.
Patent GB-493968-A (GB)
Title: Improvements in or relating to electron multipliers
IPC: H01J43/28
Filed: 1937-07-22
Abstract: 493,968. Electron multipliers. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. July 22, 1937, No. 20343. Convention date, Aug. 28, 1936. [Class 39 (i)] In an electron multiplier comprising a number of secondary emitting electrodes K<2>, accelerating electrodes R<1>-R<3> and a magnetic field causing the electrons from a photo-cathode K<1> to impact the electrodes K<2>, auxiliary electrodes C<1>, C<2> are provided to repel electrons moving transversely of the main stream, thereby preventing collection of charges on the insulating supports of the main electrodes. Each electrode C<1>, C<2> may be made of a number of parts or they may be in the form of a tube surrounding the emitting electrodes ; they may be outside the envelope. They are at a potential equal to or less than that of the cathode K<1>.
Patent GB-583345-A (GB)
Title: Improvements in gas blast electric circuit breakers
IPC: H01H33/56
Filed: 1944-10-20
Abstract: 583,345. Gas-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd., and WILCOX, T. W. Oct. 20, 1944, No. 20348. [Class 38 (v)] A gas-blast circuit-breaker of the series multiple-break type has relatively-movable contact-members 10, 10a assembled axially in sections 1, 2, respectively, of an insulating chamber, the sections 1, 2 being normally clamped together by bolts at 9 but hinged at 4 so that one section may be swung through an angle of 180 degrees to render the contact-members accessible. The contacts, which are housed in conducting chambers 13, 13a, and carry heads 11, 11a terminating in nozzles 14, 14a, are biassed by springs 15, 15a into engagement with fixed contact nozzles 16, 16a on a vented structure 8 interposed between the sections 1, 2. An inlet 23 is provided for pressure gas which, after forcing itself between the contact nozzles 14, 16, 14a, 16a, exhausts to atmosphere through the structure 8 and contact-members 10, 10a. On separating the sections 1, 2, contact-members 10, 10a may be withdrawn, leaving the springs 15, 15a, within the casings 13, 13a. In a modification, more than two separable axially-disposed sections, and more than two sets of contacts may be employed. The contact construction of Specification 583,346 is referred to.
Patent GB-1064989-A (GB)
Title: Improvements relating to photographic projection screens
IPC: G03B21/60
Filed: 1964-05-15
Abstract: 1,064,989. Projection screens. MECHANISCHE WEBEREI G.m.b.H. May 15, 1964 [May 18, 1963], No.20378/64. Heading G2J. A projection screen made of a plastics foil and containing plasticizers to render it foldable and crease-resistant, and a white pigment, has material providing a high reflectivity factor normal to the screen at one or both surfaces. The material, lead carbonate crystals, may be embedded in the plastics foil or may be embedded in a second thinner layer of foil bonded to the base foil, the second foil generally being colourless. The pigment used is titanium dioxide crystals. Glass or plastics beads of high refractive index, silver or aluminium particles, or metal bronzes or spangles may be used instead of lead carbonate crystals.
Patent GB-364610-A (GB)
Title: Improvements in or relating to electrical sound reproducing devices and the like
IPC: H04R11/08
Filed: 1930-07-04
Abstract: 364,610. Gramophones. McCLATCHIE, S., 21, Osnabruckerstrasse, Wilmersdorf, Berlin. July 4, 1930, No. 20386. Convention date, July 4, 1929. Void [Published under Sect. 91 of the Acts]. [Class 40 (ii).] In a gramophone pickup, the needle (not shown) is clamped to a tubular armature 12, Fig. 2, by the part 21 of a spring clamp 20, the part 21 passing through an opening in one side of the armature and serving as a pivot about which the armature and needle turn. Alternatively, a wire 21a, Fig. 8, enters the armature 12 to clamp the needle 17 and may be bent out to release the needle by an arm 30.