baber/WOPTO huggingface dataset:
Patent GB-1448356-A (GB)
Title: Method of removing a brazing alloy from stainless steel
IPC: C23F1/44
Filed: 1975-03-13
Abstract: 1448356 Stripping brazing metal from stainless steel FOUNTAIN PLATING CO Inc 13 March 1975 [18 March 1974] 10481/75 Headings C7D and C7E High-temperature brazing alloys containing a major amount of Au, Ag and/or Ni are removed from stainless steel by (1) treating with an aqueous solution of an alkali cyanide and a nitro-substituted aromatic compound, (2) rinsing in water and (3) treating in a solution of 40-50 vol. % HNO 3 . The nitro-compound may be nitrobenzoic acid, Na m-nitrobenzoate, nitroaniline or nitrophenol; the aqueous solution may contain a wetting agent such as EDTA, and is used at room temperature  to 185F for 20-30 minutes. The HNO 3  may contain a minor amount of HCl and CuSO 4 ; it is used for ¢-5 minutes at 100-120F. Step (1) may be preceded by degreasing and water rinsing, and step (3) followed by water rinsing; where the braze is difficult to remove, all steps apart from degreasing are repeated as necessary. Brazes referred to are 85 Au-15 Ni, Ag/Cu, Ag/Cu/Ni, Ag/Cu/Zn/Cd and Ni/Si/B.
Patent GB-215025-A (GB)
Title: Improvements in lubricant compressors
IPC: F16N3/12
Filed: 1924-04-28
Abstract: 215,025. Tecalemit, Ltd., (Assignees of Robin, J. N.). April 27, 1923, [Convention date]. Piston apparatus for discharging receptacles. - A lubricator for applying different degrees of pressure to the lubricant comprises a screwoperated piston 8 in a cylinder 5 provided with a discharge conduit 11 fitted with a non- return valve 20. The outer end of the conduit 11 carries a piston 16 fitting a bore 15 in a sleeve 13 screwed on to the conduit 11. Under normal pressure the lubricant passes through the valve 20 and passage 19 into the bore 15 and then to the lubricating nipple 30 which is connected to the sleeve 13 by a bayonet joint. When the pressure of the lubricant reaches a certain degree, the conduit 11 begins to rotate in the sleeve 13 and the piston 16 advances into the sleeve putting additional pressure on the lubricant.
Patent GB-1363968-A (GB)
Title: Displacement detector and an optical subassembly therefor
IPC: G01B9/02
Filed: 1972-03-07
Abstract: 1363968 Measuring displacement INSTITUT AVTOMATIKI I ELEKTROMETRII SIBIRSKOGO OTDELENIA AKADEMII NAUK SSSR 7 March 1972 10485/72 Heading G4H [Also in Division G2] A laser interferometer used for measuring the displacement of a right-angled prism reflector 19 includes a laser with Brewster angle windows 11, and an interferometer located in the path of the laser beams and including two semitransparent orthogonally intersecting plates 17, 18 and the right-angled prism 19. As described light from a laser is transmitted via mirrors 13, 14 and a telescope 15 (which broadens the laser beam and reduces its angular divergence) on to a prism shaped reflector 16 which directs the beam onto plate 17 where it is split. One portion of the beam is transmitted to and reflected from the prism 19 to the plate 18 where it interferes with the second portion of the beam to derive an interference pattern in two orthogonal directions, one of which is rotated through 90 degrees by prism 16. The interference pattern, the bands of which are displaced by one band for a movement of the prism 19 of one half othe wavelength # of the laser radiation, is sensed 90 degrees out of phase by two photocells 23, 24 to feed signals to counter 27 representing the amount and sense of movement to prism 19. The counter outputs and their complements are fed to logic circuitry which results in a further reversible counter 38 being pulsed (in the correct direction) to display the displacement in metric units.
Patent GB-570949-A (GB)
Title: Improvements in or relating to electrically heated cigar and cigarette lighters
IPC: F23Q2/28
Filed: 1944-06-01
Abstract: 570,949. Cigar &c. lighters. EELES, C. W. June 1, 1944, No. 10507. [Class 75. (iii)] A cigar or cigarette lighter comprises a casing 1 fitted with a detachable cap 2 carrying on a fire proof former 7 a coiled resistance 6 the electric circuit to which is completed on lifting the casing from a supporting surface by the downward movement of a spring-pressed rod 5 carrying a contact ring 13 normally held out of engagement with resilient contacts 12 in the circuit by engagement with the supporting surface. The contacts 12 are carried by insulating blocks 11, 11a mounted on the casing 1. A disc or pin 18 limits the downward movement of the rod 5. The ring 13 may be loose on the rod 5 and pressed against a stop by a spring to ensure a quick break of the circuit. The bottom of the casing is weighted to prevent unintentional upsetting.
Patent GB-105729-A (GB)
IPC: C05C3/00
Abstract: 105,729. Schubert, A. Dec. 11, 1916 Manures.-In order to increase the manurial value of gas liquor obtained on the distillation of gas coal, the gas liquor together with the crude tar is subjected to a second distillation and the distillate passing over up to a temperature of 200‹ C., collected separately. The gas liquor is separated from the oily parts and diluted with water in the proportion of 1 to 3 up to 1 to 10. The distillation is effected by superheated steam and foaming is diminished by means of stirrers.
Patent GB-976252-A (GB)
Title: Improvements in and relating to electrical outlet socket connectors
IPC: H01R24/76
Filed: 1962-03-20
Abstract: 976,252. Two part couplings combined with switches; switches held set and freed mechanically. RING-GRIP (AUSTRALASIA) PTY. Ltd. March 20, 1962 [March 20, 1961], No. 10573/62. Headings H2B and H2E. In an electrical outlet socket one or more switches are provided which automatically close and open on insertion and removal of the plug, the contacts of the switch performing a rolling and/or sliding motion to prevent welding. As shown, each wire-receiving terminal 28-is provided with a silver contact 32 which is engaged by a similar contact 36 on the arm 34f of the resilient contact member 34, the arm 34a of which forms the contact for the plug pin. An arcuate member 40 is displaced when the pin is inserted between its end and the contact arm 34f, and bears on the arm 34b closing the switch and then twisting the arm 34b thus rolling and/or sliding the contacts 32, 36 over one another, Figs. 10, 11, 12 (not shown). When the plug is withdrawn the action is reversed due to the resilience of the contact member.
Patent GB-165578-A (GB)
Title: Appliance for practically demonstrating a geometrical truth in relation to a right-angled triangle
IPC: G09B23/04
Filed: 1920-04-16
Abstract: 165,578. Huggrett, H. April 16, 1920. Teaching geometry.-A device for demonstrating that the square on the hypotenuse of a rightangled triangle is equal to the sum of the squares on the other two sides consists of a slab of the size of the square on the hypotenuse and built up of segments connected together and relatively movable to form the squares on the other two sides. The right-angled triangle a<2> and the squares on the sides are outlined on the baseboard a. Slabs of the size of the squares on the two sides are provided, the larger one being divided into segments 1, 3, 4. 5 on lines passing through the centre, one parallel, and the other at right angles to the hypotenuse of the triangle a<2>. The segment 1 is slidably connected to the baseboard a by pins c, d a a slot e therein, but is otherwise immovable, the segments 2, 3, 4 being hinged to the segment 1, and the segment 5 to the segment 3. The segments are held in the position shown against the action of springs 6, 7, 8, 9, the last three of which act indirectly around pegs 12, by stops h, f, g respectively, and a stop i acts to prevent the segment 1 from sliding. These stops, which are carried by levers m and act through holes in the baseboard a, are held in position by flat springs j, but may be moved out of operation by levers l provided with handoperated plungers n. To form the hypotenuse square from the position shown, the stop h is withdrawn to allow the segment 2 to be pulled into the position o by the spring 6, the stop g is withdrawn whereby the spring 8 pulls the segment 4 into the position q, and the stop f is removed, to allow the segment 5 and finally the segment 3 to be drawn into the positions r, s by the springs 7, 9 so that the square is built up out of position. The stop i is drawn out of engagement with a recess in the segment 1 and the whole slid along the baseboard into the correct position. To re-form the two squares, the hypotenuse square is slid back until the stop i engages the recess in the segment and the other segments are swung into position against the action of the springs until they engage their respective stops. The levers l, m and springs j are accommodated in a recess at the back of the baseboard.
Patent GB-1234746-A (GB)
Title: Electromagnetic relay
Inventor: TOWNER STANLEY HERBERT
IPC: H01H50/28
Filed: 1970-03-05
Abstract: 1,234,746. Electromagnetic relays; electric selectors. STANDARD TELEPHONES & CABLES Ltd. 5 March, 1970, No. 10625/70. Headings H1L and H1N. A light-current electromagnetic relay having a flat E-shaped cone and yoke (10) with the operating coil 11 about its centre limb 101 and a flat armature 12 secured to a biasing spring 13 attached to the core and yoke member has an insulating bar 14 secured to the armature 12 and arranged when the relay coil is de-energized to bear on one or more contact springs 15 to hold one or more contact sets open; the bar being moved on coil energization to permit the contact spring or springs 15 to engage respective fixed contacts 16. The contacts are thus closed with a preset contact pressure unrelated to the forces on the armature. The ends 153 of the contact springs are bifurcated (Fig. 9A, not shown) and both the contact spring 15 and fixed contact 16 have terminal togs 15 4, 163 which extend through a printed circuit board on which the relay is mounted by its screw 18 as one of a matrix of relays (Fig. 14, not shown).
Patent GB-1399776-A (GB)
Title: Explosive-powered fastener-driving tool
IPC: B25C1/18
Filed: 1973-03-06
Abstract: 1399776 Cartridge-actuated fastener driving tools HILTI AG 6 March 1973 [2 May 1972] 10680/73 Heading B4C The exhaust gases in a cattridge-actuated fastener driving tool pass through one or more connecting channels 14 to an annular space 17 and then through one or more gas outlet channels 18 back to the barrel bore. As shown, the gases enter three connecting channels 14 when the head 9 of the propelled piston has driven in the fastener 4 and reached an enlarged region 13 of the barrel. The gases leave the annular space through the gas outlet channels which are in the form of three slots 18 staggered in relation to the channels 14 but aligned with "flow-off" notches 19. The muzzle 6 is secured by a screwthread 8. When a piston is not employed the fastener performs the same function as the piston in allowing the gases to enter the connecting channels 14. The invention aids sound damping and directs the gases away from the operator. The sound damping effect may also be increased by providing the annular space 17 with dividing ribs or inserts of acoustic insulating mineral wool.
Patent GB-1162646-A (GB)
Title: Hydropneumatic Accumulator
Inventor: MORLEY DAVID CHRISTOPHER WALTO
IPC: F15B1/10
Filed: 1966-03-11
Abstract: 1,162,646. Hydraulic accumulators. HYDROTROLE Ltd. Jan. 18, 1967 [March 11, 1966], No. 10703/66. Heading F1P. An hydraulic accumulator comprises a rigid body 11, 15 having therein a flexible bladder 12 loaded exteriorly by gas and clamped by its lipped mouth 12a between a clamping ring 14 fitted in a counter-bore within the body 11 and a base plate 13, the bladder having radially extending ribs (126) which collapse against one another when the bladder is deflated. The bladder is provided with disc-shaped inserts 14a adjacent its mouth. The inserts 16 seat on inlet ports 13a in the base plate 13 when the pressure of liquid supplied to the bladder falls below a certain value. As shown, the bladder mouth is of circular cross-section and is provided with four equi-spaced radially extending ribs (12b), and the inserts 16 are disposed between the ribs for seating on a respective one of the inlet ports 13a. The bladder may alternatively have a square or triangular cross-section, Figs.4-11 (not shown) and in each case the corners progressively merge into a ribbed configuration in a direction away from the mouth. A port 19 for gas is provided in the end body port 15 which also has a cushioning ring 18 in contact therewith and held in position by a circlip 17.
Patent GB-828007-A (GB)
Title: Improvements in ceramic bodies based on barium titanate
Inventor: COOK RONALD FREDERICK
IPC: C04B35/468
Filed: 1957-04-02
Abstract: 828,007. Piezo-electric elements. BRITISH DIELECTRIC RESEARCH Ltd. April 2, 1958 [April 2, 1957], No. 10755/57. Class 40 (8). A piezo-electric ceramic material comprises a major proportion of barium titanate with minor proportions of calcium titanate and cobalt oxide. The material is such that it yields on analysis BaO, CaO and TiO2 in stoichiometric proportions with 0.5% to 9% by weight of calcium titanate and a CoO content of up to 1% of the total weight of the other oxides. The preferred range of CoO content is from 0.25% to 0.75% and the preferred content is 0.5%. One of the examples given in the Specification contains, in addition, 0.5% of manganese dioxide. It is stated that the cobalt oxide addition improves the density, coupling factor and mechanical Q of the composition. A pure grade of titania obtained from redistilled titanium chloride is preferably used in preparing the composition. The oxides are milled together and calcined at 1100‹ C. for 3 hrs. after which the material is mixed with a polyvinyl acetate binder and pressed into discs. The discs are fired at 1180‹ C. to 1400‹ C. and provided with silver electrodes in the usual manner.
Patent GB-738331-A (GB)
Title: Electronic power amplifier
IPC: H03F3/32
Filed: 1953-04-20
Abstract: 738,331. Valve amplifying circuits. SIERRA ELECTRONIC CORPORATION. April 20, 1953 [April 22, 1952], No. 10779/53. Class 40 (6). In a push-pull output stage comprising a pair of valves operating as cathode-followers, with a split cathode load 16, 17 coupling paths 21, 23 respectively are provided between the grids and cathodes of the valves so that the load is in part driven also from the source 10 driving the out. put stage. In addition, the anode circuit of the output valves may comprise a centre-tapped choke 26, 27 and the respective anodes and cathodes may be cross-coupled through condensers 28, 29, in order to stabilize the load on the driver stage when the output valves are operated in class B. The load 16, 17 may be replaced by a centre-tapped choke, Fig. 3 (not shown) across which a single load is connected via blocking condensers.
Patent GB-200889-A (GB)
Title: Improvements in wood working machine tools
IPC: B23Q1/70
Filed: 1922-04-18
Abstract: 200,889. White & Sons, Ltd., T., and Christie, W. T. April 18, 1922. Cutters.-In wood-working machine tools of the type in which a cutter block is mounted on a rotatable arbor at a point intermediate of two bearings, the arbor is capable of withdrawal for removal of the cutter block without disturbing the bearings, which consist of ball races. In a four cutter planing machine, the cutter-block a is mounted on an arbor b by means of tapered collets or other means (not shown), the arbor being secured to the driving-spindle d by a tapered end c and a screw or other arrangement. The other end of the arbor carries a sleeve f which is stepped or otherwise formed so as to be withdrawn from a totally enclosed ball bearing g, and is provided with a squared or other end h for operating the connection with the driving-spindle. A hinged cover i or other device is provided for protecting the free end of the arbor. Where more than one cutter block is required they may be mounted on separate arbors or all on a single arbor.
Patent GB-839841-A (GB)
Title: Improvements in and relating to electric cables and to an improved insulation compound for use therewith
Inventor: MILDNER RAYMOND CHARLES
IPC: H01B7/02
Filed: 1956-04-10
Abstract: A composition for making extruded cellular insulation for electrical conductors comprises a mixture of a highly crystalline olefine polymer, e.g. polyethylene or polypropylene, having a specific gravity of at least 0.94 at 20 DEG  C., with or without a less crystalline olefine polymer having a specific gravity of about 0.92, and a blowing-agent, e.g. p,p1-oxy-bis-benzene sulphonyl-hydrazide, benzil hydrazine or azodicarbonamide, with or without modifyingagents, e.g. urea and biuret, to raise the decomposition temperature of the blowing-agent.  Flame retardants, plasticizers, e.g. polyisobutylene and butyl rubber, pigments and antioxidants may also be added.ALSO:A composition for making extruded cellular insulation for electrical conductors comprises a mixture of a highly crystalline olefine polymer, e.g. polyethylene or polypropylene, having a S.G. of at least 0,9 at 20 DEG C., with or without a less crystalline olefine polymer having a S.G. of about 0,92, and a blowing agent, e.g. p.p.1-oxy-bis-benzene sulphonyl-hydrazide, benzil hydrazone or azo-dicarbonamide, with or without modifying agents, e.g. urea and biuret, to raise the decomposition temperature of the blowing agent.  Flame retardants, plasticisers, e.g. polyisobutylene and butyl rubber, pigments and antioxidants may also be added.  In making an electrical conductor with a cellular insulation of a highly crystalline polymer, derived from an aliphatic monoolefine (see Group IV(a)), by the usual extrusion technique, a vacuum is set up at the point where the polymer comes into contact with the conductor, conveniently in the forward portion of the hollow mandrel.  The material is then cooled immediately after it issues from the die, by positioning a cooling bath, in which water is maintained at room temperature, in front of the die so that the extruded material has to travel not more than 2 inches before entering the cooling medium.
Patent GB-688243-A (GB)
Title: A tripod, with telescopic legs, for photographic apparatus and the like
IPC: F16B7/10
Filed: 1951-05-10
Abstract: 688,243. Tripod stands. NIGGELOH, C. May 10, 1951 [May 11, 1950], No. 10982/51. Class 52(iii) The sections of the legs of a telescopic tripod have co-acting ribs and grooves pressed therein, the number of such ribs 1 in each section increasing from the lower sections upwards. The legs are preferably of approximately oval section and indentations 2, 3 in the grooves may be provided to limit extension.
Patent GB-455090-A (GB)
Title: Improvements in or relating to prepayment electricity meters
IPC: G07F15/00
Filed: 1935-04-09
Abstract: 455,090. Electrically-tripped switches. FERRANTI, Ltd., PRINCE, J., and WHITEHEAD, M., Hollinwood, Lancashire. April 9, 1935, No. 11000. [Class 38 (v)] [See also Group XVIII] The supply switch of a prepayment electricity meter is adapted to serve also as a protective circuit breaker responsive to earth leakage current. As applied to the prepayment meter described in Specification 369,959, and to the switch mechanism described in Specification 374,057 comprising fixed contacts 1 and 2 engaged by a moving contact 7 operated by toggle links 8, 9, 10 which are latched in circuit-closing position by a pivoted latch lever 11, an electromagnet 12, having a winding 26, energized by the leakage current in the system, attracts the latch 11 to release the switch when the leakage current exceeds the permissible maximum. A second winding, energized by the load current, may be provided on the electromagnet 12 to break the circuit in the event of an overload. A manually operable press-button may also be provided to release the latch. The switch is reset by rotation of a hand shaft 19, an arm 21 on this shaft engaging a pin 22 on a loose cam 18, which depresses an extension of the toggle link 10 as its rotation is completed by a spring 23. Backward rotation of the shaft 19 is prevented by ratchet-and-pawl mechanism 20, which, together with the loose connection 21, 22 and the spring 23, prevents the switch being held closed by the consumer if prepayment is exhausted and the latch 11 moved to the releasing position by the quantity mechanism. The single-pole switch shown may be replaced by a double-pole switch, the two moving contacts of which may be mounted at the two outer ends of the toggle links 8, or secured to the outer end of one of the links by a bridge piece. A manually operable push-button may be provided for momentarily connecting the winding 26 across the mains through a suitable resistance, in order to test the correct working of the leakage current release.
Patent GB-400528-A (GB)
Title: Method of and means for finishing photographs
IPC: G03D15/04
Filed: 1933-04-13
Abstract: 400,528. Pictures. KNITTEL, B., 1, Hassestrasse, Dresden, Germany. April 13, 1933, No. 11129. [Class 11.] Photographs are finished by embossing a. raised or depressed border around the picture by means of dies which emboss one corner at a time and which may be used for photographs of different sizes. The upper die 7, Fig. 6, is fixed and the lower die 8 is actuated by a lever 10 and guided on pins. A corner piece 11 is adjustable by means of a screw 12 and acts as a stop for the photograph to regulate the width of the border, or the upper die may be of transparent celluloid or glass and have register lines on it. A simple border, Fig. 2, may be produced by one operation at each corner, or a raised beading, Fig. 3, by two operations, the photograph being reversed in between. Different shapes and sizes of dies may be used and the border may be coloured with an ink ribbon or ornamented.
Patent GB-584010-A (GB)
Title: Improvements in or relating to rubber and elastomers
IPC: C08K3/22
Filed: 1944-08-10
Abstract: A process for permanently marking rubber or elastomers such as neoprene consists in intimately incorporating vanadium pentoxide in a rubber or elastomer, subjecting it to heat at a temperature which will cure or vulcanize said compound without change of colour, and then applying a metal stamp or die heater substantially above the temperature at which curing or vulcanizing takes place momentarily to the surface of the material, thereby changing its colour at the point of application. In a preferred method from 5-20 per cent. of the pentoxide is used and the composition vulcanized at a temperature below 140 DEG C. The die or stamp which may be combined with a cutting machine is preferably heated to 180 DEG C.  The Provisional Specification describes also the use of pigments other that vanadium pentoxide which change colour under the conditions specified.
Patent GB-421635-A (GB)
Title: Improvements in or relating to means for applying heat to sealing wax and other thermo-plastic substances
IPC: B43M1/02
Filed: 1934-04-13
Abstract: 421,635. Seals; soldering. WEARHAM, J., 10, Albion Road, Lewisham, London. April 13, 1934, No. 11161. [Class 146 (ii)] [See also Groups XXII and XXV] A stick of sealing-wax, solder, or the like is slidably held in a recess formed by bending up one side of a clip 1, the stick being maintained in position by a spring 2. A taper 7 is held in a second recess on the other side of the clip by spring members 4, 5. A porcelain or like tube 6 may be provided surrounding the taper. Alternatively the clip 1 may be integral with or attached to a container for liquid or solid fuel or to an electric heater. The solid fuel may be held in a boxlike container which is provided with a spring tongue for holding the fuel in position and with a projection which is held by the clips 4, 5. The axes of the wax stick and the taper &c. are preferably inclined, and the device is used by holding the stick in the hand and rotating the clip and heater about the axis of the stick so as to bring the heating means beneath the wax and thus melt the latter.