baber/WOPTO huggingface dataset:
Patent GB-360612-A (GB)
Title: Improvements in and relating to apparatus for cleaning blackboards and blackboard erasers
IPC: B43L21/02
Filed: 1930-10-13
Abstract: 360,612. Cleaning blackboards &c. ADAMS, E., LARGIOLL, R., STRAWN, R. D., and EHRET, W. H., Mount Carmel, Pennsylvania, U.S.A. Oct. 13, 1930, No. 30647. [Class 8 (i).] Blackboard erasers are cleaned by rotary brushes within a casing from which the dust is withdrawn by suction ; the casing may have a hose attachment fitted with a nozzle for cleaning the gutter, holding chalks, along the base of the board or a nozzle containing a rotary pad for cleaning the board. The casing 1 is divided into compartments respectively containing the brushes 14 on the one hand and an electric motor 8 and a pair of fan casings 30 on the other. The fan casings extend about openings in the partition between motor and brushes, and these openings may be closed by a slide 32. The motor drives the brushes through a clutch. The erasers 20 are held by resilient forks on the casing bottom and its cover, and the switch is closed by putting the cover in place. The fan casings are connected by a T-shaped conduit 39, the stem of which rises through the cover and is closed when erasers are being cleaned by a cap. The fans. deliver downwards into dust drawers 34. A shaft driven from the motor is mounted within the stem,. so that by removing the cap and attaching a hose,. Fig. 7, containing a flexible shaft 48 driving a pad. 54, the blackboard may be cleaned. The nozzle or cap 52 containing the pad may be replaced by a simple nozzle 51 used to clean the gutter along the base of the board. Fig. 9 shows a modified erasercleaner in which a vertical cylinder contains a brush rotated by a motor 66 to clean erasers 71 fed by gravity through a door 70, dust being drawn off by a fan 67 and delivered to a suitable point by a spout 69.
Patent GB-392448-A (GB)
Title: Improvements in or relating to control apparatus for combined electric lighting and heating or like installations
IPC: H01H71/24
Filed: 1932-10-31
Abstract: 392,448. Switching systems for consuming devices ; electromagnetic switches. JOHNSON, A. C., Electricity Works, London Road, Southend-on-Sea. Oct. 31, 1932, No. 30649. Addition to 339,752, [Class 38 (iv), Electric supply and transmission systems &c.]. [Class 38 (iv).] The "off-peak" load 21 on a distribution system 3 is switched on and off by a tilting snap-action switch a energized by a coil A, which is energized in shunt from the system through switch a and a switch b in series, which last is energized by hand or clockwork or by a series coil B in the distribution system, so that the coil A is de-energized after having been energized to switch the " off-peak" load on or off. In the position in Fig. 1, the load is connected to the supply through a three contact tilting mercury switch a energized through a lever 9 by an armature lain the coil A and having a weight 32 on an arm 31 which co-operates with stops 29 on the lever 9 to complete switching action initiated by energization of the coil A. On the occurrence of peak load conditions coil B moves an armature 18 to bridge contacts 15, 16 and so energizes the coil A through switches b and a in series. Switch a is tilted and contacts 7, 8 are bridged coil A being thus de-energized and load 21 disconnected, but contacts 7, 8, thus prepare the circuit for coil A when the armature 18 of switch b drops during "off-peak" conditions. Switch a may comprise a lever arm carrying two metal forks, Fig. 2 (not shown), insulated therefrom, which alternately connect together one of two pairs of mercury cups, one cup of each pair being permanently connected together to constitute the contact 7, Fig. 1. Alternatively, if the metal bridging forks are connected together and to the supply so as to constitute the contact 7, Fig. 1, two of the mercury cups may be dispensed with. The weighted lever 31 may be replaced by a snap action spring control. The switch b may comprise a magnetic armature 18, Fig. 4, pivoted in a mercury contact 14 and acted on by the winding B to contact with one or other of two contacts 13, 15.
Patent GB-308183-A (GB)
Title: Improvements in and relating to rotary electric switches
IPC: H01H1/58
Filed: 1927-11-15
Abstract: 308,183. Turner, C. A. Nov. 15, 1927. Binding-posts and terminals.-A rotary switch of the kind described in Specification 179,513 is provided with terminal lugs and screws, the heads of the screws facing in one general direction and being located in planes parallel to the rotary axis of the switch and transverse to the base of the switch. As shown, the feed wires 25 are led to terminal lugs 19 which are twisted so that the heads 24 of the screws all face in the same direction. The lugs may be arranged in staggered relationship and are provided with clamping plates 26. Locating or securing means for mounting the switch on a panel comprises socket members in the switch base for co-operation with screws or with projections on the panel. Specification 308,241, [Class 38 (v), Electric switches &c.], also is referred to.
Patent GB-535324-A (GB)
Title: Golf club grips and method of making same
IPC: A63B49/08
Filed: 1939-11-24
Abstract: 535,324. Handles for golf clubs. SPALDING & BROS., Ltd., A. G. Nov. 24, 1939, No. 30748. Convention date, Nov 25, 1938. [Class 132 (ii)] In a method of constructing golf-club grip a cemented sheet of material is enfolded over the grip foundation with the meeting edges abutting so as to extend outwardly in the form of a flange which is afterwards trimmed off and pressed down to form a substantially flush seam. The flange 14, Fig. 3a, is preferably arranged so that after trimming off, the resulting seam is located substantially along the under side of the grip. The grip, after trimming the seam, is wrapped with tape and cured in an oven and the tape removed. The seam may be rolled and dyed to conform in appearance and colour with the outer faces of the grip. A plug-like rubber cap 24 26a, Fig. 9, is applied to the end of the grip. The grip sheets may be perforated and cut two at a time by means of a press punch equipped with cutting and perforating dies. A rubber forming sheet secured to upper and lower forming plates may be used to press the cemented grip sheet on to the grip foundation, and the outstanding flange may be cut away in a trimming press. The grip foundation may be of the kind described in Specifications 451,063 and 455,481.
Patent GB-172918-A (GB)
Title: A new or improved guard or protector for use in connection with capstan and like lathes
IPC: B23Q11/08
Filed: 1920-09-14
Abstract: 172,918. Timbrell, W. Sept. 14, 1920. Interconnecting guard with starting-gear.- Relates to guards for the bar-stock and its feedmechanism in capstan and like lathes, of the type in which the machine cannot be started in operative condition unless the guard is in position, and consists in so interconnecting the guard with the starting-pedals or hand-levers that the lathe cannot be set in rotary motion with the guard displaced. As applied to a pedalcontrolled lathe, the pedals 2 are obstructed, when the guard is not effective, by abutments 10 on a slidable notched bar 8, which is connected bv a bell-crank lever 7 and link 5 to an extension. 6 of a supporting-bracket 3 of the guard 1. The pivot rod 4 may be wholly or partly carried by the machine, or, as described in Specification. 172,729, by independent standards 11.
Patent GB-776743-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D55/15
Filed: 1953-11-09
Abstract: 776,743. Combined disc and drum brakes. BENDIX AVIATION CORPORATION. Nov. 9, 1953 [Dec. 5, 1952], No. 30964/53. Class 103 (1). A brake combining the characteristics of both the disc and internal shoe-drum types comprises a drum 26 secured to, and rotatable with, an axle 36, and enclosing shoes 14 and 16 arranged side by side and carrying friction members 44 at their outer radial faces, the shoe 16, which has a flange 46 extending over shoe 14, carrying friction lining 48 on its axially extending face. When pressure is applied to an actuator cylinder 38, pistons 40 acting through rods 42 cause simultaneous opposite relative circumferential movement of the shoes 14 and 16 so that they are spread apart by the action of ball ramp combinations 50 into engagement with the sides of the drum. The circumferential drag on the shoes then causes them to pivot about one or other end pivots 18 or 20 so that the friction material lined flange 46 engages the axial face of the drum. Springs 56 and 58 act to retract axially and radially. Automatic adjustment means 66 may be fitted. Specification 774,489, [Group XXV], divisional on this Specification has different claims for the same construction. Specification 776,744 also is referred to. Reference has been directed by the Comptroller to Specification 698,726.
Patent GB-1109103-A (GB)
Title: Demagnetizing arrangement for colour television picture tubes
IPC: B29C48/90
Filed: 1965-07-21
Abstract: 1,109,103. Cathode-ray tube circuits. RADIO CORPORATION OF AMERICA. 21 July, 1965 [31 Aug., 1964], No. 31062/65. Heading H4T. [Also in Division H1] A magnetic shield and demagnetizing arrangement for the screen end of a colour television shadow-mask tube comprises a frusto-conical shield 16, e.g. of sheet steel, closely enveloping the tube 13 and two saddle coils 21, 22, or a corresponding single unitary coil, which may be energized by A.C. initially of high value and rapidly reduced to zero. The coils may be wholly inside or wholly outside the shield 16, or partly within and partly outside the shield channels or cut-outs 23 being provided in the shield for the coil turns.
Patent GB-248516-A (GB)
Title: An improved electric generator
IPC: H02K23/36
Filed: 1924-12-29
Abstract: 248,516. Tyler, J. W. Dec. 29, 1924. Machines with two or more armatures; armatures and field magnets, dampers and short circuited screens on cores of; armatures and field magnets, ventilating; windings; cores, yokes, and carcass structures. - A continuouscurrent generator comprises a two-part armature constructed of toothed rings 18 and core-plates 17 and two or more separate windings and separate commutators on each part. Air chambers 26 are formed between the rings 18 and core-plates, spacers 30, Fig. 3, being provided to permit circulating air currents. Damping windings 29 mounted on bobbins 27 are located in the air chambers. An H-casting 14 between the armatures has a fan 13 mounted upon it, and T-castings 15 are secured at each end of the machine. The field magnets on one part are staggered with respect to those on the other part. A portion of each winding on one part can be connected to any commutator on the same part.
Patent GB-1016767-A (GB)
Title: Improvements in or relating to electrical contacts
Inventor: COX SHAUN MATURIN
IPC: H01R4/02
Filed: 1962-08-14
Abstract: 1,016,767. Direct connection between conductors. MORGAN REFRACTORIES Ltd. Aug. 9, 1963 [Aug. 14, 1962], No. 31169/62. Heading H2E. Vanadium pentoxide is used in an electrical contact material, which may be placed between two conducting members subjected to very high operating temperatures, to maintain good electrical conductivity between them. The two conducting members may be the supply conductor to an electrically heated glass-making furnace, and-the refractory electrode thereof (e.g. tin oxide). Various additives to modify the behaviour of the vanadium pentoxide are described (e.g. Cu, Al, Al 2 O 3 , BaO, BaO 2 , Cu 2 O, CuO, SiO 2 ), or a material may be used which yields vanadium pentoxide under the conditions of operation.
Patent GB-403514-A (GB)
Title: Improvements in and relating to electric switches with arcextinction by vapour-blast
IPC: H01H33/70
Filed: 1932-11-05
Abstract: 403,514. High - tension switches. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assigness of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Nov. 5, 1932, No. 31204. Convention date, Nov. 5, 1931. [Class 38 (v).] Pneumatic blow-outs.-In switches in which the arc is extinguished by a blast of vapour a condensation device for the exhausting vapour is connected directly behind the point of interruption 1, 2 and is adapted to increase the vapour velocity at the contacts. This may take the form of a metal tube 8 of decreasing crosssection, arranged in the form of a spiral so as to exert a centrifugal action on the vapour and separate it from the liquid. A helical rotating motion in the direction of the tube-axis may be imparted to the vapour by guiding surfaces within the tube, and the condensate is collected by rings, as 9, and led away. With a metal tube 8, the lead may be connected at 10<1> instead of 10. The cooling effect of the metal may be enhanced by external fins or by an insulating jacket containing water. Alternatively, the vapour of one or more switches may be exhausted into the existing condensers of steamplant in the power-station, and the boilers of such plant may supply the arc-extinguishing vapour. The Specification as open to inspection under Sect. 91 refers also to arc-extinction by gas and to the application of the invention to the vapour generated in a water-break switch. Such subject-matter does not appear in the Specification as accepted.
Patent GB-503904-A (GB)
Title: Improvements in closure means for envelopes
IPC: B65D27/22
Filed: 1938-10-28
Abstract: 503,904. Envelopes. RODIGER, W. Oct. 28, 1938, No. 31240. Convention date, Oct. 28, 1937. [Class 146 (ii)] An envelope .for postal transmission at the cheap rate has its closure flap 2 retained in the closed position by means of a non- circular member 3 which is placed over a hole 6 in the flap and partially overlies the latter, and is gummed to the envelope back 1 by means of a gummed section 5, the member 3 originally forming part of the flap which was cut to facilitate separation of the member therefrom to leave the hole 6.
Patent GB-408899-A (GB)
Title: Improvements in microscopes for examining the profiles of surfaces
IPC: G02B21/00
Filed: 1933-11-10
Abstract: 408,899. Microscopes. SCHMALTZ, G., 79, Frankfurter Strasse, Offenbach-on-Main, Germany. Nov. 10, 1933, No. 31308. Convention date, Nov. 11, 1932. Addition to 395,649. [Class 97 (i).] The parent Specification describes a method of examining the profiles of a surface by imaging a slit or knife-edge on the surface and examining the luminous boundary line by a microscope the axis of which is inclined to that of the illuminating rays. According to the present invention the observation system and the illumination system are so attached to the microscope stand as to be interchangeable so that the surface can be illuminated normally and viewed obliquely or vice versa. In Fig. 1 the stand is in the form of a spherical dome 1 having its centre in the surface to be examined, and provided with feet 2 resting on the said surface. A tube 5 screwed into an aperture 3 in the dome carries the illumination parts consisting of a lamp 7 and lenses 9, 10. Adjacent the lens 9 are two plates 11 separated by a slit the width of which can be varied by displacing the plates by knobs 13. A member 6 screwed into the tube carries a condenser 14 which, in conjunction with the lens 10, images the slit in the plane of the surface to be examined. The stand 1 is also formed with a meridional guide 4 in which is displaceably mounted a slide 17 having an aperture into which the microscope 19 is screwed. The external threads on the tubes 5, 19 are alike so that these two parts can be interchanged. In the form shown in Fig. 3 the condenser 14 and the microscope objective 22 are identical and both are screwed directly into the stand 24. The tubes 5, 19 are carried by a member 35 which is rotatable about an axis bisecting the angle between the axes of the illumination and observation systems. The stand is rotatably mounted in a ring 25 and is provided with a pointer 27 by which its adjustment can be indicated on a scale 28 on the ring. The ring 25 is mounted within a stationary ring 29 in such a way as to be adjustable in its own plane. To facilitate the examination of small objects the microscope may be placed on pillars 46 extending from a base 42 which has a central pillar 43 adjustably carrying a stage 45 on which the object 40 is placed. An additional fixed illuminator 37 may be mounted in the stand 24.
Patent GB-446748-A (GB)
Title: Improvements in and relating to illuminated indicating scales for radio receivers and like devices
IPC: H03J1/04
Filed: 1934-11-01
Abstract: 446,748. Adjusting wireless apparatus. HESKETH, B., c /o McMichael Radio, Ltd., Wexham Road, Slough, Buckinghamshire. Nov. 1, 1934, No. 31321. [Class 37] A fixed indicating plate 1 for radio receivers is provided with a number of inclined slots 2 ... 9 and co-operates with a movable plate having a radial slot, a source of illumination behind the plates producing a spot of light as the slits intersect during relative movement of the plates. The slots are arranged at increasing heights over one half of the scale and at decreasing heights over the other half. The index plate has the station names arranged in rectangular divisions, each slot 2... 7 forming the diagonal of one division, the slots 8, 9 giving indications on an arcuate scale of a second wavelength range.
Patent GB-743484-A (GB)
Title: Hydrolysis of steroid ketals
IPC: C07J5/00
Filed: 1952-12-11
Abstract: 11 - b  - Hydroxy - pregnane - 3,20 - dione is prepared by mixing an excess of an aqueous acid hydrolysing agent and an 11-b -hydroxypregnane-3,20-dione-3,20-diketal, wherein the ketal groups are derived from an alkane-1,2-diol containing from 2 to 8 carbon atoms or an alkane-1,3-diol containing 3 to 9 carbon atoms in an inert organic solvent at a temperature between about 0 DEG  C. and the boiling-point of the reaction mixture.  The hydrolysis may be carried out with dilute mineral acid such as hydrochloric, sulphuric or phosphoric acid, or with a strong organic acid such as p-toluenesulphonic acid.  The process may be modified in that the 11b -hydroxypregnane-3,20-dione-3,20-alkanediol diketal is prepared by reacting a pregnane - 3,11,20 - trione - 3,20 - alkanediol diketal with an excess of a reducing agent, e.g. lithium aluminium hydride. The process may be further modified in that the 11b -hydroxypregnane-3,20-dione-3,20-alkanediol diketal is prepared by reacting pregnane-3,11,20-trione with the required alkanediol in the presence of an acid catalyst.  The diketal reactants may be derived from ethylene glycol, propane-1,2- and -1,3-glycol, butane-1,2- and -1,3-glycol, pentane-1,2- and -1,3-glycol, 4-methyl-pentane-1,3-diol hexane - 1,2 - glycol, heptane - 1,2 - glycol and octane - 1,2 - glycol.  The acid catalyst used in the diketal formation may be an organic sulphonic acid such as p-toluenesulphonic acid or a mineral acid. A number of detailed examples are given.  Specifications 743,486 and 743,487 are referred to.
Patent GB-773361-A (GB)
Title: An improved process for the dehydration of cooked mashed potato
IPC: A23L19/15
Filed: 1955-11-03
Abstract: The process of the parent Specification is modified by adding water to the mashed potato to decrease the solids content significantly, but not below 18 per cent, before dehydration is undertaken, the product obtained being drier and of greater bulk density, and having a greater proportion of flakes which pass through a screen with holes 15/16 in square but not a screen with holes 7/16 in. square.
Patent GB-1455367-A (GB)
Title: Resistor composition for use in glass seal type spark plugs
IPC: H01T13/41
Filed: 1974-07-16
Abstract: 1455367 Resistor composition NIPPON TOKUSHO TOGYO KK 16 July 1974 [16 July 1973 (2)] 31501/74 Heading C1M A resistor composition, for use in spark plugs, consists of: (A) a base component having been produced by mixing; (a) a mixture consisting of 15-65% by weight of barium borate glass and 35-85% by weight of an inert filler, with (b) an aqueous solution of at least one water-soluble carbonaceous material in an amount which gives 0À2-4 parts by weight carbon per 100 parts by weight of mixture (a) on calcining, drying the resulting mixture, calcining at 800-1300‹ C., and pulverizing; and (B) either a total of 0À1-20 parts by weight per 100 parts by weight of (A) of TiB, B 4 C, TiC, NC, NbC, TaC, WC, Cr 3 C 2 , Mo 2 C, SiC and/or La 2 C; or a total of 0À5-30 parts by weight per 100 parts by weight of (A) of at least one of TiO 2 , Nb 2 O 5 , Ta 2 O 5 , ThO 2  and La 2 O 3 ; component (B) having been added to (A) before or after calcination of (A). The inert filler may comprise gairome clay, zircon, alumina, mullite, zirconia or mixtures thereof. The carbonaceous material may be glycerin, sugar, polyvinyl alcohol, methyl cellulose or dextrin. The barium borate glass preferably consists of 65-75 wt. per cent B 2 O 3 , 25-35 wt. per cent BaO, and 0-10 wt. per cent of other oxides.
Patent GB-1064199-A (GB)
Title: Improvements in or relating to fluid pressure control and regulating devices
IPC: G05D16/10
Filed: 1964-08-04
Abstract: 1,064,199. Valves. C. A. NORGREN CO. Aug. 4, 1964 [Aug. 2, 1963], No. 31635/64. Heading F2V. [Also in Division G3] A pressure-regulating valve having an inlet 43 and outlet 57, comprises a chamber 13 containing two pistons 10, 12 operatively connected with a main valve 30, 37. The outer side of piston 10 is subject to pilot pressure in a chamber 32 through a passage 46 to 55 leading from the inlet 43. The outer side of the other piston 12 is subject to the pressure in main outlet chamber 42, the pistons being biased apart by a spring 18. The passage 46 to 55 is controlled by a pilot valve V 1  comprising a ball 22 carried by a stem 19 in screwed adjustment with piston 10 by a knob 29. The ball cooperates with a hollow spring-urged valve member 24 slidable in the main valve member and co-operating with a seat 20 carried by the main valve member to form a second pilot valve V 2 . This valve vents the chamber 32 through an annular seat 50, interior 61 of piston 12, apertures (not shown) in the wall of this piston, and vents 62. The bottom wall of piston 12 co-operates with a closure 59 carriedby the main valve member to form a relief valve for the outlet chamber. Pilot passage 47 has a filter S.
Patent GB-661034-A (GB)
Title: Improvements in or relating to the production of lactose
IPC: C13K5/00
Filed: 1948-12-07
Abstract: 661,034. Lactose. USINES DE MELLE, Dec. 7, 1948 [Dec. 20, 1947], No. 31669/48. Class 127. The precipitation of calcium compounds during the crystallisation of lactose from milk serum, containing calcium lactate after defecation with lime, is substantially prevented by the addition of an acid to produce lactic acid and a calcium salt having a solubility distinctly different from that of calcium lactate, or a salt to produce a lactate distinctly more soluble than calcium lactate and a calcium salt having a solubility such that the whole or substantially the whole thereof will precipitate, the acid or salt being added in an amount sufficient to react with at least so much of the calcium lactate as would otherwise precipitate during the crystallisation, e.g. with 75 per cent of the calcium lactate. The salt may be an alkaline metal sulphate, oxalate, tartrate or carbonate. The acid may be one, e.g. hydrochloric or nitric, which will produce a calcium salt having a solubility such that the whole or substantially the whole thereof will remain insoluble or one, e.g. sulphuric, oxalic or tartaric, which will produce a calcium salt having a solubility such that the whole or substantially the whole thereof will precipitate. The precipitated calcium salt in either case is removed prior to crystallisation.