baber/WOPTO huggingface dataset:
Patent GB-587614-A (GB)
Title: Improvements in or relating to electric hot plates
IPC: H05B3/70
Filed: 1941-04-17
Abstract: 587,614. Electric hot-plates. GENERAL ELECTRIC CO., Ltd., and CARMALT, L. H. April 17, 1941, No. 5007. [Class 39 (iii)] An electric hot-plate for use in an industrial cooking range comprises a number of separately removable parallel elongated members 1 each of which is a rectangular body of iron cast around a sheathed heating element 2. Each member rests on knife edges 3, and all are enclosed in a frame 5. The ends 6 of the heating element are brought out below the hot plate and the connections may be such that several degrees of heat are available. In Fig. 2b, the elements may be circular or part circular, resting on radial knife edges 3. Specification 289,545, [Class 39 (iii)], is referred to. According to the Provisional Specification, the heating element may be embedded in a groove in a pre-cast body.
Patent GB-1029281-A (GB)
Title: Calculating device
IPC: G06G1/00
Filed: 1962-02-09
Abstract: 1,029,281. Circular slide rules. D. F. MACKAY. Feb. 8, 1963 [Feb. 9, 1962], No. 5016/62. Heading G4B. A calculating device comprises superposed, coaxial, relatively rotatable discs having circular logarithmic scales marked on them and juxtaposed so as to be easily compared, and one of the scales has conversion factors indicated thereon so that they can be utilized without the aid of a cursor.
Patent GB-1167087-A (GB)
Title: A Method of Disinfecting Refrigerating Rooms.
Inventor: MALINOWSKA IRENA
IPC: A61L2/18
Filed: 1967-02-02
Abstract: 1,167,087. Disinfecting cold rooms. CENTRALNE LABORATORIUM CHLODNICTWA. 2 Feb., 1967, No. 5083/67. Heading F4H. A cold room is disinfected by dispersing a solution of a disinfectant in the form of an aerosol mist into the room, the latter being at a temperature below 0‹ C. and above the temperature at which the solution freezes. The disinfectant may be chloramine B or dimethyl lauryl benzyl ammonium bromide and the solvent may be a mixture of glycerol, ethyl alcohol and water. Preferred concentrations are disclosed.
Patent GB-735669-A (GB)
Title: Improvements in or relating to photographic roll film cameras
IPC: G03B17/30
Filed: 1953-02-24
Abstract: 735,669. Photographic roll film cameras. WITT, W. Feb. 24, 1953 [Feb. 25, 1952], No. 5161/53. Class 98 (1). A roll film camera having an openable rear wall and an axially slidable film rewinding knob carrying a film spool driving key is characterized in that the rear wall is latched closed by means operable by an intermediate member within the camera engaged by a coupling element provided on the key shaft and disposed so that it only engages the intermediate member when the knob is withdrawn to disengage the key from driving relation with the spool, when rotation of the knob releases the latch. As shown, a supply cassette 24 containing a spool 27 is located by engagement within the core 21 of the key 17 of the film-rewinding knob 13 which is held in the position shown by a spring 14 engaging in a groove 15 in the knob shaft 16. The spool is thus freely rotatable to unwind the film by means of a further knob (not shown). When the film is to be rewound, the knob 13 is pushed inwardly until the key 17 engages the diametral bar 23 of the spool core. To remove the cassette, the knob 13 is pulled outwards to its full extent when the key slot 18 engages a pip 19 on a slide 11 located against the top wall of the camera body and passing through a slot in the end wall of the body and by turning the knob clockwise the slide flexes the resilient latch member 3, which fits flush with the front of the body and the removable back when the camera is closed, so that the back may be detached.
Patent GB-635074-A (GB)
Title: Improvements in or relating to the polymerisation of vinyl compounds
IPC: C08F4/00
Filed: 1947-02-21
Abstract: Vinyl compounds such as methacrylic acid, its anhydride or esters thereof such as the methyl and glycol esters, acrylic esters, a -halogen acrylates, styrene, vinyl carbazole and vinyl esters, are polymerized in bulk in the presence of a sulphinic acid, or other organic derivative of sulphurous acid, no oxygen-yielding polymerization catalyst being present.  Sulphinic acids specified are p-toluene, chlorobenzene, 2 - naphthalene, xylene, p - cymol, anthracene, benzyl and p-acetylamino-benzene sulphinic acids.  The reaction may be carried out with no external heat, with mixtures of monomer and polymer or with hydroquinone present as inhibitor.  The process is applicable to the manufacture of lenses, dental fillings and prostheses, artificial leather, lacquers and varnishes.  The Provisional Specification describes the use of p-toluene sulphinic acid in polymerizing methyl methacrylate in aqueous dispersion containing oleic acid and also the use of a peroxide in conjunction with a sulphinic acid.
Patent GB-677506-A (GB)
Title: Improvements in pulse amplifiers
IPC: H03K9/00
Filed: 1951-03-05
Abstract: 677,506. Automatic gain and selectivity control. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 5, 1951 [March 8, 1950], No. 5266/51. Class 40 (vi). A R.F. pulse amplifier comprises an amplifying valve and tuned circuit in which the mutual conductance of the valve and the damping of the tuned circuit are increased by control pulses produced as a function of the signal pulses. The control pulses may be derived from the detector stage or from a local pulse generator synchronized from the incoming signals. Incoming R.F. pulse signals, Fig. 1, are fed to a receiver 2 including a mixer with a local oscillator 3 and through broadband I.F. stages to a narrow band amplifier comprising valves 6, 11. The tuned circuits 4 and 7 are insufficiently broad to pass the pulses faithfully while the valves 6, 11 are biased to a low value of mutual conductance. When desired, signals 42, 42<SP>1</SP>, Fig. 3a, with interference pulses 43, 44 and 45 are fed to the narrow band amplifier, the output across tuned circuit 14 increases according to curve 50, Fig. 3b. An amplitude detector diode 17 feeds signals to valve 21 normally biased beyond cut-off by a tapping on potentiometer 25 so that when they exceed this potential a positive going signal is fed over line 35 to increase the mutual conductance of valves 6, 11. Diodes 31, 32 are normally cut-off by bias derived from cathode resistors 9, 13, but the positive-going signal causes them to conduct and thereby increase the damping on the associated tuned circuits. The remainder of the pulse 42 is transmitted faithfully as pulse 46 whereas interference pulses 43, 44 are not of sufficient duration to cause a control voltage to appear on line 35. Long interference pulses 45 of small amplitude do not produce a sufficient control voltage to broaden the bands width of the amplifier so that the output pulse 49 is also of small amplitude. The negative pulses appearing at the anode of valve 21, Fig. 3 (c) are differentiated over capacitor-resistor network 56, 57 to produce the waveform of Fig. 3 (d). This is applied to biased diode 62 clipping at level 66 to give output pulses 59, 59<SP>1</SP> which are passed to demodulator 27. In a modification, Fig. 2 (not shown), the pentodes 6, 11 are replaced by grounded grid triodes the increases in grid potential increase the mutual conductance and thus the input impedance of the cathode circuit tapped-on to the tuned circuit. When the pulses are frequency modulated on the carrier the amplitude detector is replaced by a frequency detector. By the use of secondary-emission valves, the gain of the amplifier may be substantially increased when the bandwith is increased by the control voltage.
Patent GB-144760-A (GB)
Title: Improvements in and relating to internal combustion engines, and the like
IPC: F02B75/28
Filed: 1919-03-04
Abstract: 144,760. George, J. W. March 4, 1919. Valves; valve-gear. - In engines of the kind in which cylinders are arranged in pairs co-axially with two pistons on the same rod, the open ends of each pair are outward, the piston rod passing through packing rings y of wedge section adjusted bv wedgeshaped members tightened by screws z. The. casting contains two pairs of such cylinders and two pairs of rocking rotary valves f surrounded by rockmg sleeves h. The valve member has two sets cf six ports alternately connected by internal partitions 7 to the ends 9 of the valve casing for inlet, and to the inner chamber 10 for exhaust. The sleeve members h and casing g<1> have three ports each. The passages in the casing are oppositely disposed to cylinders on the same level and on the same axis, so as to obtain similar strokes in diagonally opposite cylinders simultaneously. The valve and sleeve are operated by eccentrics set at 90 degrees on a pair of shafts n, o, Fig. 2, parallel to the axis of the cylinders, or on a short shaft p, Fig. 3, bearing in a bridge across the end of the cylinder and driven by gearing r from a single shaft parallel to the cylinder axis. A gauze u is fitted over the outer ends of the cylinders to catch lubricant, which is led back by a passage v to the crank-case.
Patent GB-525412-A (GB)
Title: Improvements in and relating to typographical composing machines
IPC: B41B11/06
Filed: 1939-02-18
Abstract: 525,412. Type-bar-making machines. LINOTYPE & MACHINERY, Ltd., SCOTT, R. H., GORSE, W. F., and HAYWARD, A. S. Feb. 18, 1939. No. 5473. [Class 100 (iii)] Magazines.-To facilitate the removal of a magazine from a shiftable column, the movement of an extensible magazine-supporting arm to operative position is arranged to spread the magazines apart, and to separate from its baseframe the magazine to be removed. The magazines are spread apart by toggle-mechanism comprising links 12, 13, Fig. 1, the lower links 13 being fixed to a shaft 14 in the lowermost base-frame, and the upper links 12 pivoted to the base-frame of the uppermost magazine. The lower magazines are lifted, as far as is necessary, by manually adjusted hooks 16. The toggleshaft 14 is formed at its end with a transverse tongue, which, as the magazines are raised or lowered, passes into engagement with one or another of grooves 20, Fig. 2, formed in the hubs of lever-arms 21, which are mounted in the machine frame. The arms 21 are connected by a link 22, and are rocked simultaneously by a link 8 connecting them to one of the magazinesupporting arms 5. The magazine in use is lifted from its base-frame by cam-members 28 fixed on shafts 27, one of which is mounted in each base-frame. Each shaft has at its end a transverse tongue, and that corresponding to the magazine in use rests in a groove 25, Fig. 2, in a lever-arm 11, which is mounted in the machine frame. The arm 11 is connected by a link 9 to the magazine-supporting arm 5, the arrangement being such that the magazine in use is not raised until the magazines have been separated. To prevent the magazine from being lifted if the matrices are not locked therein, .a latch may be provided for locking the magazinesupporting arm until the matrix-locking bar has been moved into locking position.
Patent GB-696306-A (GB)
Title: Method of bonding aluminium to ferrous metal and article produced thereby
IPC: B22D19/00
Filed: 1951-03-07
Abstract: In order to obtain a good bond between aluminium or aluminium alloy, the backing is first coated with a barrier layer of cobalt or an alloy of cobalt with nickel and/or iron and then with a coating of silver or an alloy of silver with copper and/or gold. Preferably the barrier layer is from 0.0001 to 0.0005 inch thick, the silver or silver alloy layer from 0.00005 to 0.0002 inch thick, the ferrous backing layer exceeds 0.080 inch thick and the cast layer exceeds 0.020 inch thick.  The cobalt and silver layers are preferably applied by electrodeposition and the plated backing member is then heated in a hydrogen atmosphere to approximately 1350 DEG F and the aluminium or aluminium alloy is cast thereon at that temperature. The body is then cooled at not less than 100 DEG F per second down to 1000 DEG F.  The cast layer may be an alloy comprising 1.5 per cent silicon, 6.5 per cent tin, 1 per cent copper, 0.5 per cent nickel and the balance aluminium. Specification 646,506 is referred to.
Patent GB-1273695-A (GB)
Title: Improvements in apparatus for coiling lamp filament supports
IPC: H01K3/08
Filed: 1970-02-05
Abstract: 1,273,695. Making lamp filament supports; coiling. GENERAL ELECTRIC CO. 5 Feb., 1970 [13 Feb., 1969], No. 5586/70. Headings B3A and B3E. [Also in Division H1] Lamp coil supports 6 are produced by rotating a locking chuck 2, 6 relative to a spindle 17 in a clockwise direction as seen in Fig. 9 until the end of an arcuate slot 36 engages the head of a set screw 35, at which time the inner end of a shoulder 33 on the face of a nosepiece 28 is at the end of a slot 34. The end of a wire 43 extending from a spool 44 through a support 47, is placed against the shoulder 33 and is slid along the shoulder into the end of the slot 34. The locking chuck is then released to permit a torsion spring 37 to rotate it relative to the spindle 17 so that the wire is clamped in the slot 34 by the shoulder 33. The spindle 37 is rotated so that the wire 43 is wound helically around the surface 31 of the spindle for one and a half turns 47<SP>1</SP> after which the wire rides down on a spiral track 48 of a die to form the spiral portion 48<SP>1</SP> of the support. The spiral portion is interrupted by a straight ohordal section 49 and the wire makes a sharp bend at 52 as it turns radially inward at 53. The wire then engages with a filament mandrel 7 between adjacent pairs of turns of the filament coil 2 to form several small diameter turns 54. The direction of the coiling is then reversed to form a looking overwind 55 by a cam operated pivotal movement of a finger member 56 to the left as seen in Fig. 2. The wire 43 is then cut at the end of the overwind 55 and a pressure finger 64 is forced against the helical turns 47<SP>1</SP>. The end of support 6 is released from the slot 34 by rotating the chuck 26 and the pressure finger 64 is pulled away slightly from the spindle 17. Thus the outer turns 47<SP>1</SP> are freed and unwind ¢ to ¥ of a turn before they are restricted by the pressure finger 64. After the finger 64 has been completely lowered, a filament coil holding collet 18 is opened and the filament coil 2 is advanced for forming the next support.
Patent GB-515039-A (GB)
Title: Improvements relating to the synthetic production of motor fuels
IPC: C07C2/62
Filed: 1938-02-22
Abstract: 515,039. Motor fuel hydrocarbons. ANGLOIRANIAN OIL CO., Ltd., DUNSTAN, A. E., and THOMPSON, F. E. A. Feb. 22, 1938, No. 5607. [Class 2 (iii)] Hydrocarbons suitable for use as a motor fuel or a motor fuel constituent are prepared by a two-stage process wherein the first stage comprises the catalytic alkylation of isobutane or isopentane with an olefine, and the second stage comprises the fractional distillation of the product thus obtained characterized in that the high boiling residue from the second stage is added to the reaction mixture in the first stage of a subsequent batch. The process may also be conducted such that the only olefine which is used in the first stage is that obtained as a high boiling residue from the second stage of a previous batch. The preferred alkylation process used in the first stage comprises treatment in the presence of sulphuric acid of high concentration within the range -10‹ C. to + 30‹ C. Olefines mentioned as suitable for the first stage include propylenes, isobutene, disobutene, triisobutene, butene-1, butene-2, trimethylethylene, or a mixture of olefines such as C4 fraction cut from gases derived from an oil cracking plant, or a condensation product from olefines derived from such a fraction, or a polymerized mixture of olefines, or a polymerized olefine such as propylene' butenes or isobutenes, or a polymer gasoline. In the second stage the distillation is carried on so as' to separate the constituents which have a boiling range of 20‹-185‹ C. Ethylene may be used as the olefine with isopentane in the presence of cupric sulphates and mercurous sulphates. Specification 479,345 is'referred to.
Patent GB-1426571-A (GB)
Title: Method for manufacturing fluorescent screens for use in colour picture tubes
IPC: H01J9/20
Filed: 1973-02-05
Abstract: 1426571 Colour television tubes HITACHI Ltd 5 Feb 1973 [7 Feb 1972] 5677/73 Heading H1D In a method of manufacturing a three colour striped colour crt screen wherein photosensitive substances coated on the front panel inner surface are exposed to light through parallel stripe shaped perforations of a colour selecting member (e.g. a shadow mask) with bridges (9), (Fig. 2, not shown), the light source comprises either a stationary elongated tubular lamp parallel to the perforations, or a point source which is reciprocated in a direction parallel to the perforations so as to be effectively an elongated source, the photosensitive substances behind the bridges being exposed by light obliquely incident on the colour selecting member. The phosphor stripes may be formed continuously (Fig. 2A, not shown) separated (Fig. 2B, not shown) and with intervening black non-luminous substance (e.g. graphite) (Fig. 2C, not shown). The light source may be moved as in Fig. 3, which includes parallel guide members 12a, 12b with grooves 15a, 15b, point source 17 (e.g. tubular Hg arc lamp 18, conical collimator 19, reflector 20 and casing 21) electric motor 22, with circular disc 25 having a small eccentricity and connecting arm 26 to movable plate 16. Reciprocation may be 7 to 8 mms. Movement may be as in Fig. 5 (not shown) including operating arm (37) supporting a point source (not shown) electromagnet (40) and spring (41) the magnet may be operated by A.C. or low frequency pulse signal. Alternatively, a stationary elongated light source may be used (2Î10 mms.). The methods overcome uneven exposure due to the bridge portions (9).
Patent GB-653825-A (GB)
Title: Electromagnetic clutch-operating mechanism for use for instance for automatic telephone switches
IPC: H01H63/24
Filed: 1948-02-26
Abstract: 653,825. Brakes. STANDARD TELEPHONES & CABLES, Ltd. Feb. 26, 1948, No. 5713. Convention date, Sept. 13, 1946. [Class 103 (i)] [Also in Groups XXIV and XXXV] An electromagnetic clutching device, e.g. for telephone systems, comprises a universallypivoted armature 26 which presses on a flexible gear-wheel 29 to engage or disengage a driving gear. The U-shaped electromagnet core 10 having coils 18 is secured by a screw 14 to a frame 13. An arm 19 projecting from the frame provides support for an adjustable bolt 23 having a ball-end 24 on which the armature pivots so that it may adapt itself to engage both pole-faces of the electromagnet. The flexible gear 29 is tensioned so that when the electromagnet is energized it engages the driving-wheel, but when de-energized an adjustable returning spring 35 causes the armature end 34a to press on the wheel and displace it axially against an adjustable stop 42 for braking.
Patent GB-845464-A (GB)
Title: Improvements relating to the production of nickel oxide
Inventor: LLEWELYN DAVID MYERS
IPC: C01G53/04
Filed: 1958-02-21
Abstract: Nickel oxide powder is produced by roasting a mixture of nickel powder and nickel oxide powder in air until substantially all the nickel has been converted into oxide, without substantial sintering the particles.  The nickel powder may be obtained by the thermal decomposition of nickel carbonyl, and is preferably in the form of aggregates with a structure resembling cotton-wool. From 30 to 50% nickel oxide is normally present in the initial mixture.  The final oxide may be milled to 1 to 1.5 micron size, and in that state it is particularly suitable for ferrite production.
Patent GB-496740-A (GB)
Title: Improvements in physical culture apparatus
IPC: A63B23/00
Filed: 1937-02-26
Abstract: 496,740. Exercising-apparatus. GARCIA, A. Feb. 26, 1937, No. 5807. Void. Convention date, Feb. 26, 1936. [Class 132 (i)] Comprises a frame 1, Fig. 1, carrying stirrups 3 and a seat 4 adjustable in height by plates 6. The seat is also adjustable longitudinally of the frame 1 by means of pins 5 to accommodate users of different height. In Fig. 2, the seat 4 is carried by parallel motion links 7 and is adjustable both longitudinally and in height by means of an adjustable strut 8. For rowing exercise the struts 8 are removed and the seat 4 oscillated by pulling on levers 11 in opposition to a spring 10, stops such as 9 limiting the seat movement in both directions. The levers 11 may be detachable and replaced by known devices for simulating the movements of rowing.
Patent GB-933285-A (GB)
Title: Mixing foamed resins and moulding articles therefrom
Inventor: WALDRON KEVIN CYRIL
IPC: B29B7/42
Filed: 1961-02-17
Abstract: 933,285. Mixing and moulding foamed res in AUSTIN MOTOR CO. Ltd. April 3, 1962 [Feb. 17, 1961], No. 2752/61. Class 86. Mixing apparatus for use in a method of moulding articles from foamed synthetic resin comprises a cylindrical chamber 1, one end of which is formed by a valve block 2 having an inlet valve and means for metering quantities of foamforming materials sufficient, after foaming, to fill the mould; the other end of the chamber is constituted by the valve-like closure member 7A. There is a helical ribbon stirrer 5 supported by arms 4 from a spindle 3C and scraping the walls of the chamber ; the lowest arm 4 follows the shape of the closure 7A. In operation, materials are admitted to the chamber and mixed for a predetermined time when they are abruptly ejected into the mould by actuation of the push-rod 19, which depresses the closure member 7A. The duration of mixing is about 2 to 8 seconds, and the stirrer is rotated at 500-3,500 r.p.m. In other embodiments, the closure member may be secured to and rotate with the stirrer spindle, the entire stirrer assembly being axially displaced to effect discharge, see Fig. 1 (not shown); or the stirrer shaft may be in two parts connected by a pin and slot joint, the lower part bearing on the closure member by means of a thrust-race and being axially displaceable by a push-rod, see Figs. 2 and 3 (not shown). The mixing chamber is open to atmosphere through an air port during metering and mixing so that mixing does not take place under pressure. Metering, mixing for a predetermined time and ejection are controlled automatically.
Patent GB-525494-A (GB)
Title: Improvements in or relating to abrasive products and grindstones and other tools employing the same
IPC: B24D3/02
Filed: 1939-02-22
Abstract: 525,494. Abrasive compositions. GROS, J. T. L. Feb. 22, 1939, No. 5911. Convention date, Nov. 28, 1938. [Class 70] [Also in Group IV] An abrasive article such as a tool or grindstone consists of a mixture, compressed and agglomerated with a binding substance, of an abrasive powder and chips of a soft metal in which the abrasive grains are embedded due to the compression. The abrasive may be diamond, emery, corundum, silicon carbide, or a mixture, the metal may be an aluminium alloy, copper, or bronze, and the binder may be liquid and/or powdered synthetic resin, shellac, rubber, clay, kaolin, or glass. Fibres such as asbestos or cotton may be added. The abrasive composition may be moulded upon cores of metal or plastic material, or mounted on a backing by cementing or screwing.
Patent GB-557169-A (GB)
Title: Improvements in or relating to the concentration of slurries and apparatus therefor
IPC: B04C5/04
Filed: 1942-05-04
Abstract: 557,169. Centrifugal machines. DU PONT DE NEMOURS & CO., E. I., LAUGHLIN, H. G., and RISSER, G. J. May 4, 1942. No. 5961. [Class 23] A cyclone type separator for concentrating slurries comprises a tangential entry 2 leading into a helical chamber 4 surrounding the rising exit pipe for clear liquid 3 and a shell 5, which may be conical and closed at its lower end, in the neighbourhood of the entry to the pipe 3. The concentrated slurry leaves by the exit 6.