baber/WOPTO huggingface dataset:
Patent GB-286841-A (GB)
Title: Improvements in or relating to the attachment of diaphragms or oscillation members for loud-speakers
IPC: H04R7/20
Filed: 1927-01-26
Abstract: 286,841. Wade, H., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Jan. 26, 1927. Diaphragms.-The diaphragm of a sound responsive instrument, such as a loud-speaker or microphone, is peripherally supported in a frame by means of a yielding strip of woollen fabric, e.g. flannel or serge. The diaphragm, which may be conical, is preferably sewn to the strip.
Patent GB-160334-A (GB)
Title: Improvements in exhaust silencers for internal combustion engines
IPC: F01N1/08
Filed: 1920-01-24
Abstract: 160,334. Read, D. Jan. 24, 1920. Exhaust-silencers.-A silencer comprises perforated cones B fitted in the exhaust pipe A, which is of the ordinary diameter without any enlargement. The cones have collars E fitting the exhaust pipe and are mounted upon a steel tube C. The apex of the cone may be rounded.
Patent GB-664429-A (GB)
Title: Improvements in and relating to variable electrical resistances
IPC: H01C10/14
Filed: 1949-01-28
Abstract: 664,429. Regulating switches; controllers. LILLEY, A. Jan. 27, 1950. [Jan. 28, 1949] No. 2469/49. Classes 38 (iii) and 38 (v). A switch for motor control comprises a stack 12 of resistance elements clamped between end plates 13, each element being connected to a blade spring 14 and a spring plunger 19 being provided to sequentially flex the springs 14 into contact whereby the resistances are progressively short circuited. The plunger 19 is depressed by a pedal 24 pivoted by a knife-edge 25 and returned by a spring 30 compressed between the housing 17 and a split pin 31 in a stud 29 on the pedal. Alternately, the springs 14 may be flexed by a screw-threaded rod or cam. According to the Provisional Specification the resistance elements may be arranged in one plane and spaced in a circle or part-circle, the extremities of the blade springs over-lying one another at the centre, and being cranked so as to be normally spaced apart but movable into contact with each other.
Patent GB-660045-A (GB)
Title: Improvements relating to stuffing boxes and the like
IPC: F16J15/28
Filed: 1949-01-28
Abstract: 660,045. Stuffing-box substitutes. TRIST & CO, Ltd., R., and CLARKE, C. W. Dec. 30, 1949 [Jan. 28, 1949], No. 2473/49. Class 122(v) A packing element for use in a stuffing- box surrounding a reciprocating rod 8 comprises an L-shaped ring 12 containing a pair of segments forming a ring 2 around the rod 8 and a second pair of similar segments having their points staggered in relation to the first pair, each segment being pressed to the shaft 8 by a leaf spring 10 which engages the ring 12. To prevent the rings rotating, projections 28 on the spring 10 engages depressions 38 in the ring 12 and the springs engage projections 20 at each end of the segments. The rings 12 are contained in a housing 36 the end ring 32 being pressed against a conical surface 42 in a wall 38. In a modification the other end ring 12 engages a ring which in turn engages a conical surface of the end cover. In a further modification the rings 12 are pressed together by a spring. The axial length of the two rings 2 may be less or greater than the length of the inner cylindrical portion of the ring 12. The rings 12 are a loose fit in the housing 36 the inner diameter of which need not be machined.
Patent GB-776386-A (GB)
Title: Improvements in or relating to domestic fireplaces
IPC: F24B1/19
Filed: 1955-01-27
Abstract: 776,386. Fireplaces. BROADBENT, E., and BROADBENT, J. T. Jan. 26, 1956 [Jan. 27, 1955], No. 2488/55. Class 126  A domestic fireplace of the type in which the air for combustion is drawn through a passage beneath the hearth and designed for fitting in a room having a fireback boiler 3 mounted in the normal position, to suit the standard stool type of grate, includes a well for a metal casing 11 supporting, a basket 29 screened by a fret 39 and having a grate 33 the rear edge of which is level with the lower edge of-the boiler flue 5. The front of the casing is formed with a boss bored to accommodate a shaft 23 turnable by a handle 25 and carrying a damper 21 disposed in a pipe 19 through which combustion air is drawn. The inlet to the pipe is disposed outside the house, although the pipe may be led through the side of the hearth so that it receives air from the room. Within the casing is an ash box 35 having feet 37 which support it so that its bottom is above the level of the pipe 19.
Patent GB-847827-A (GB)
Title: Improvements in and relating to the production of a photographic material on aluminium and its alloys
IPC: G03C1/77
Filed: 1957-01-24
Abstract: 847,827. Photographic layers. INTERALPINA. Jan. 24, 1957 [March 2, 1956], No. 2561/56. Class 98(2) Aluminium and its alloys having a grown-on carrying layer as of oxide produced chemically or anodically and silver halide incorporated therein is treated with a solution of a stabiliser to stop the antistabilising action of the carrying layer on the silver halide, and if desired is treated also with an organic chemical which increases the photosensitivity. In Example 1 an anodically oxidised aluminium plate has silver halide incorporated by double decomposition and is immersed in 6-nitrobenzimidazole sulphate solution, washed and dried, and can be contactexposed, developed and fixed. In Example 2 an oxide layer on a light metal article has silver incorporated into the layer and is then halogenated and immersed successively into solutions of imidazole-alanine (also known under the name hestidine) and cosin. In Example 3 silver halide is incorporated into an oxide layer or aluminium foil and the whole is immersed successively into solutions of 1:1<1>-diethylpinacyanol iodide and 1:3-dimethyl-imidazole. The description preceding the examples specifies triazoles, thiazoles, imidazole and tetrazole and their derivatives as further stabilisers for the purpose; and indicates a preference for an after-treatment of the material following the photographic operations with boiling aqueous cobalt or nickel salts to close the pores of the aluminium oxide. Specification 728,183 is referred to.
Patent GB-248887-A (GB)
Title: A device for cleaning the tapes and lead lines laid on hard tennis courts
IPC: A47L11/08
Filed: 1925-01-30
Abstract: 248,887. Thorne, G. Jan. 30, 1925. Lawns &c., removing rubbish from.-Apparatus for cleaning the lines or tapes of hard tennis courts &c. comprises a framework mounted on grooved rollers and carrying a rotary brush made of approximately the same width as the lines or tapes and driven in a direction opposite to that of the driving roller, the front end of the framework being supported in such a way as to allow of the brush being forced downwards without lifting the driving roller. The framework is provided with handles 4, 4a and consists of side plates 2, 2a and cross rails 3, 3a. The brush 6 is driven from the main roller 8 by a crossed belt 9, the hub of the brush and the central part of the roller 8 being grooved or reduced in diameter to accommodate the belt 9. The shaft of the brush may be adjustably mounted. The front of the frame is supported on a grooved roller 11 carried by pivoted arms 12, 12a guided by brackets 14, 14<a> and normally held in place by springs 13, 13<a> which yield when the brush is pressed downwards by means of the handles to cause the bristles to spread and sweep a broader path. In a modification the roller 11 is carried by sliding arms 'controlled by adjustable springs. A tank may be mounted on the frame or between the handles from which water may pass through a tube to the brush.
Patent GB-847511-A (GB)
Title: Method of and device for measuring detonations in internal combustion engines
IPC: B64C1/14
Filed: 1957-01-25
Abstract: 847,511. Detecting engine detonations. KUHN, L. Jan. 25, 1957 [Feb. 1, 1956], No. 2755/57. Class 7(2). [Also in Group XXXVIII] A magneto-striction, capacitative or piezoelectric pick-up 5, Fig. 3, incorporating a resiliently mounted mass 1, Fig. 1, of low natural vibration frequency, e.g. 4.5 kilocycles per second, so as to respond according to the detonation wave front steepness, actuates a measuring direct-current voltmeter 9, a "magic eye" electronic device 10 and a cathode ray oscillograph 11, any or all of which may be operative at one time. An amplifier 6, operating within the range of one to twenty kilocycles per second with variable gain, a discriminating circuit 7, permitting only voltages above e.g. 2 volts to pass, and an integrator 8, feeding a balanced direct-current bridge in which the voltmeter 9 is arranged, are provided.
Patent GB-889633-A (GB)
Title: Process for the production of polyethers
IPC: C08G65/34
Filed: 1959-01-26
Abstract: Resinous products are produced by heating the acetal group-containing condensation product of formaldehyde and an aromatic hydrocarbon, formaldehyde and a phenol ether or formaldehyde and a halogen derivative of an aromatic hydrocarbon, in the presence of one or more acid catalysts, until the removal of the acetal groups is complete, and then reacting this intermediate product at a temperature of at least 80 DEG C. with a polyhydric alcohol in the presence of one or more acid catalysts. Specified polyhydric alcohols are ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, butane-1:3 and 1:4-diols, pentane-1,5-diol, hexane-1,6-diol, dimethylol propane, trimethylol propane, hexane triol, glycerine, pentaerythritol, mannitol, xylylene glycol and ethylene oxide addition products thereof.  Acid catalysts for the de-acetalization are p-toluene sulphonic acid, phosphoric acid, zinc chloride and acid-activated bleaching earth, and for the second stage of the reaction are hydrochloric acid, organic sulphonic acids and their esters and chlorides, boron fluorides and acid-activated bleaching earths. The starting material used in the examples is a xylene-formaldehyde resin.  In Example 1, the polyhydric alcohol is a polyethylene glycol of molecular weight 560.
Patent GB-1028325-A (GB)
Title: Improvements in or relating to fuel cells
IPC: H01M4/86
Filed: 1964-01-22
Abstract: An electrode for a fuel cell is made of a platinum alloy including ore of Ir 15-60%, Ru 15-60% or Ni 3-60%.  It may be prepared by sintering and may be porous or bi-porous; or may be prepared by arcmelting.
Patent GB-123091-A (GB)
Title: Improved Device for Varying the Point of Ignition in Electrical Ignition Apparatus.
IPC: F02P5/02
Filed: 1919-02-05
Abstract: 123,091. Akt.-Ges. Brown, Boveri, et Cie. Feb. 5, 1918, [Convention date]. Addition to 117,447. Rotary interrupters; timing-devices. - In ignition timing-apparatus comprising an intermediate member f between the cam h and the interrupter lever d, as described in the parent Specification, the interrupter lever d rocks in a plane at right-angles to the plane in which the member f is shifted, and its end m is widened to cover the range of movement of the member f. The lever d rocks on a stationary pivot c, and the member f is pivoted at g on a disk l controlled bv a handle i.
Patent GB-571038-A (GB)
Title: Improvements relating to electrical measuring and indicating instruments
IPC: G01R1/10
Filed: 1944-02-16
Abstract: 571,038. Electromagnetic ammeters and voltmeters. FERRANTI, Ltd., and EASTON, H. Feb. 16, 1944, No. 2868. [Class 37] [Also in Group XIX] The top jewel bearing is held in the bridgepiece in such a manner that the bearing is not affected either by rotation of the zero adjusting arm or by vibration of the instrument, but such that it may be readily adjusted. A brass bridge-member a has a central hole tapped for a jewel bearing b and has screw holes c at its ends. A zero adjusting arm e has an annular portion which fits friction-tight within a groove d concentric with the central hole. A spring brass plate f having a central hole of slightly larger diameter than the jewel bearing b is fitted over the bridge-member a, and over this is placed a spring nut h having outwardly projecting wings terminating in downwardlyturned lugs, i which enter apertures g in the plate f. The whole is then held together by means of a clamp and the jewel bearing b is screwed through the nut h and bridge-member a until it is in the correct position, the clamp then being removed. The whole assembly is screwed to the permanent magnet. field structure of a moving coil instrument by screws passing through the holes c, c<1>. The raised portion at the centre of the groove d may be omitted provided the internal diameter of the annular portion of the arm e is larger than the diameter of the jewel bearing. Instead of the groove d, a circular projection may be made about the central tapped hole in the bridgemember a, the diameter of the projection being equal to the internal diameter of the zero adjusting arm. Instead of engaging with the apertures g in the spring plate f, the lugs i may engage apertures in the bridge-member a only, or apertures both in the spring plate and the bridge-member.
Patent GB-404467-A (GB)
Title: Improvements in or relating to rail-less bus trolley pole structures
IPC: B60L5/16
Filed: 1933-01-30
Abstract: 404,467. Electric trolly poles. BRECKNELL, WILLIS, & CO., Ltd., and WILLIS, A. M., 59, Victoria Street, Bristol. Jan. 30, 1933, No. 2909. [Class 104 (iii).] The elevating spring or springs 14 of a trolly pole are anchored to the pole at a point that is distant from the base 3 at least one-seventh of the length of the pole. The universal joint of the pole to the base comprises a vertical swivel bearing 3 and a horizontal trunnion 6 on the movable part 7 of the swivel bearing. The spring tie rods 16, 17 are connected by a sleeve nut 18 for adjustment, and the rod 16 is anchored to the base by means of anti-friction bearings. The swivel bearing may comprise a ball race 9 at the upper part and a plain journal 12 at the lower part. Specifications 404,466 and 404,468 are referred to.
Patent GB-307171-A (GB)
Title: Improved method of and apparatus for forming or lining pipes by centrifugal action
IPC: B28B21/30
Filed: 1928-01-30
Abstract: 307,171. Hume, W. R. Jan. 30, 1928. Centrifrgal machines.- In the centrifugal casting of pipes and pipe linings in vertical rotary moulds employing a verticallymovable core, a charge of material is introduced into the slowly-rotating mould and is then spread into annular form without appreciable compression by the vertically-moving core, after which the rate of rotation is increased to consolidate it. Fig. 1 shows the apparatus as used for casting concrete pipes, the mould 2 being fixed by screwoperated clamping-jaws 4 and rotated by bevel gear 14. The core 17 is raised by operating the winch 31, and the initial upward movement releases a sliding plug 22 which is raised by springs 21 to form the faucet end of the pipe. A hydraulic ram mav be used in lieu of the winch and the mould may be suspended instead of resting on a table. Discharge pipes 38 carry away the extracted moisture, which is removed from the surface of the moulded pipe by momentarily interrupting the rotation of the mould. Air under pressure may be blown on to the surface of the material through the pipes 41 in the core to smooth the interior of the pipe and assist in removing moisture. Reference is made to the instalment of a number of these centrifugal appliances on a turntable so that filling and delivery can be effected at a single point. A modified construction is described for forming metal pipes. In this case a pair of moulds are rotated alternatively through a dog clutch and hydraulic casting. extracting and' core-raising means are provided.
Patent GB-370541-A (GB)
Title: Improvements in or relating to thermionic valves and circuit arrangements therewith associated
IPC: H03F1/16
Filed: 1931-01-29
Abstract: 370,541. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Jan. 29, 1931, No. 2963. Convention date, Jan. 29, 1930. [Classes 39 (i) and 40 (v).] An external electrode of a valve forms one electrode of a neutralizing or grid-tuning or other condenser connected in the circuit of the valve. In the neutralized circuit arrangement shown in Fig. 2, the external electrode A forms a condenser with an adjustable metal coating B. In the circuit shown in Fig. 3 for eliminating hum, the external electrode A and an insulated coating B form a coupling condenser having a high reactance at low frequencies and low reactance at high frequencies. In another arrangement the insulated coating B is connected to a member serving as a support for the valve.
Patent GB-196998-A (GB)
Title: Improvements in disk wheels
IPC: B60B23/10
Filed: 1922-02-01
Abstract: 196,998. Forsyth, G. H. Feb. 1, 1922. Disc wheels.-In a dished disc-wheel having rim-positioning plates located on a plane portion of the disc between its rim-supporting periphery 17 and a rib 21, the said plane portion is formed with recesses to receive the rim-positioning plates. The plates 24, Fig. 1, have wedge portions 25 which engage between the rim 20 and the periphery 18 of the disc. The periphery of the disc may be reversed as shown at 42, Fig. 4, to receive the projection 40 of the plate 41. A split ring 30, Fig. 5, may be used to effect the wedging action. The disc may be secured to the hub of an ordinary artillery wheel by bolts and a distance or filler member 16 between the hubflange 14 and the rear hub-plate 11.
Patent GB-1044723-A (GB)
Title: An improvement in or relating to hand pumps for inflating pneumatic tyres
Inventor: WALTERS DEREK JOHN
IPC: B62J7/00
Filed: 1964-01-24
Abstract: 1,044,723. Inflators. WALTERS & DOBSON & Ltd. Dec. 2, 1964 [Jan. 24, 1964], No. 3155/64. Heading F1N. The wooden handle 18 of a hand pump for inflating tyres is provided with an open ended cavity 20 in which to help a tyre pressure gauge when the gauge is not in use. An end cap 22 with flange 24 is a press fit in the open end of the cavity. In other embodiments the handle is made from a length of metal tube and has a cap at each end, or the handle is made of plastics material. In these cases the end cap, or caps may be screwed in position. Instead of an end cap the pressure gauge could have a collar of foam rubber so as to be a press fit in the cavity.
Patent GB-1040522-A (GB)
Title: Fortified picker sticks
Inventor: EGBERT WILLIAM RITCHIE
IPC: D03D49/38
Filed: 1965-01-25
Abstract: Opposite surfaces of a picking stick are densified to a degree increasing from the butt end to the picker end.  The variation is achieved by compressing an oversize blank between heated platens, between which is a tapered distance piece.  The blank is pre-heated to plasticise the lignin content of the wood, and is coated with thermosetting resin solution before compression.
Patent GB-1135884-A (GB)
Title: Improved fuel cell electrode and process of production
Inventor: BACKE EUGENE KENNETH
IPC: H01M4/86
Filed: 1967-01-20
Abstract: 1,135,884. Sintered nickel fuel cell electrode. ALLIS-CHALMERS MFG. CO. 20 Jan., 1967 [2 Feb., 1966], No. 3197/67. Heading H1B. [Also in Division C7] A sintered fuel cell electrode comprising by weight 1 to 20% Ni filaments and 80 to 99% Ni powder is made by sintering the mixture of filaments and powder at 1300 to 2200 F. in a reducing atmosphere, e.g. hydrogen for 10 to 60 minutes. The filaments have a diameter of 0À5 to 10 microns, a length of 50 to 1000 microns and a size distribution of - 36 mesh to - 250 mesh. The Ni powder has a maximum size of 10 microns and is preferably B-type carbonyl Ni of 2À9 to 3À6 microns. The mixture of filaments and powder is sintered in a graphite mould without compaction and the sintered body is rolled prior to cutting to shape. The sintered electrode is coated with a catalyst such as Pt, Pd, Os, Ir, Ru, Rh, nickel oxide, cobalt oxide or organo metallics by impregnation, electrolysis or electroless methods. The electrodes are used in cells using fuels such as hydrogen, hydrazine, ammonia and alcohols, esters, carboxylates, hydrocarbons and carbonyl compounds.
Patent GB-1409376-A (GB)
Title: Retro-reflective detector head
IPC: G06K7/10
Filed: 1973-01-23
Abstract: 1409376 Photo-electric testing APPALACHIAN ELECTRONIC INSTRUMENTS Inc 23 Jan 1973 [17 Feb 1972] 3299/73 Heading G1A An optical detector head includes a source 12 projecting light through a semi-transparent mirror 14 and lens system 15 to an inspection zone from which reflected light passes to a photo-detector 16, a portion of the projected light being retroreflected 20 back to the photo-detector 16 which is associated with circuitry to indicate if the detected light falls below a pre-set level. In Fig.1, the retro-reflective material is in the form of a ring 20 held by O-ring 22 and collar 21. In a modification, Figs.3 and 4 (not shown) the material is in the form of strips (36) attached to blocks (32c) spacing a convex lens (31) from a cylindrical lens (33) the strips (36) being adjustably masked (34) to set the sensitivity. The photo-detector 16 may be a phototransistor (1-Q1) Fig.5 (not shown), whose conductivity determines the voltage applied via resistor (1R-2) and Zeners (1-CR1, 2) to the non- inverting input (3) of an amplifier (1-A1) to whose inverting input (2) is applied a voltage adjustable via potential divider (1-R3, 4, 5). The outputs of a plurality of such circuits may be passed via respective transistors (2-Q2, 2-Q5), Fig.6 (not shown), and diodes (2-CR3, 2-CR5) to a common transistor (2-Q3) biasing a further transistor (2-Q4) into conduction to energize an LED and relay (2-K1) so long as all circuits provide sufficient output.
Patent GB-527696-A (GB)
Title: Improvements in or relating to telephone exchange systems
IPC: H04M15/04
Filed: 1939-01-31
Abstract: 527,696. Automatic exchange systems. STANDARD TELEPHONES & CABLES,Ltd., WRIGHT, E. P. G., LOWRY, L. P., and PETERS, G. E. Jan. 31, 1939, No. 3308. [Class 40 (iv)] Calling party identification for automatic ticketing is initiated by a backward signal from the called end of the connection in order to avoid difficulties in systems using non- uniform numbering schemes when identification awaits the completion of dialling. The answering signal may be used and when ineffective calls are also ticketed, the signal comprises busy or N.U. tone. Fig. 2 shows a storage and control circuit which expects 5 or 6 digits of the wanted number and those of the calling number. The switch CR receives the digits and transfers them to condenser registers connected to the banks of CS. The charges are maintained by the arrangements described in Specification 508,691, which involves stepping the switch by timed pulses, and as this proceeds for the duration of the call, it is also used for duration timing by CR which receives a pulse in the tenth position of CS. When six digits have been received, switch CS in position 7 operates IS and IC pulls up so that when D and DD are operated by the answering signal, CM pulls up to make start and test circuits for the identifying equipment. Three digits of the calling number are received by CR and registered on CS, whereupon TH pulls up and homes CR, CS in a manner not shown, TC being operated in the home position of CS to apply a 6-second pulse to its magnet. The charges on the condensers are topped up during the stepping, and each time CS passes its tenth contact an impulse is sent to CR. When the connection is released, stepping ceases and CS goes home in readiness for the transfer of recorded digits to the pointer over a translating circuit TRC which is called in by relays IS and X and connected up by a finder switch, the contacts of which are marked CH. In the case of an ineffective call, tone is received bv a thermionic valve circuit and relav W operates CM to start the identification equipment as previously described, release relay B being held by CM. When the calling number has been received, TH pulls up releases. B and causes transfer of the record as before. When five digits are received, CS being in position 6, CM on pulling up on the answering signal as previously described charges the sixth condenser group of CS with a " space " code and drives CS to position 7, subsequent operations being the same as for a six digit number. The receipt of tone in an ineffective call has similar results. Reference has been directed by the Comptroller to Specification 498,560.