baber/WOPTO huggingface dataset:
Patent GB-1219006-A (GB)
Title: Method of producing an alarm signal and electrical protection circuit for carrying out such method
IPC: G08B13/19
Filed: 1968-04-30
Abstract: 1,219,006. Fire alarms; intruder alarms. AMERICAN DISTRICT TELEGRAPH CO. 30 April, 1968 [16 May, 1967], No. 20331/68. Heading G4N. An alarm circuit produces an alarm signal if the second differential of a monitored ambient condition exceeds a selected value, thereby distinguishing between normal variations of the monitored condition and rapid variations which signify an alarm condition. Fire alarm (Fig. 4).-A thermopile 24 having alternate exposed and protected junctions produces an output voltage dependent on the rate change of temperature which voltage, when the exposed junctions are heated, opposes the bias voltage of a normally conducting transistor TR-1, the collector of which is connected to a differentiating circuit comprising capacitors C-4, C-5 and resistor R-6. An alarm relay AL is energized when the charging current of capacitors C-4, C-5 becomes sufficient to turn on a normally non-conducting transistor TR-2. Diode REC-1 provides temperature compensation for the bias of transistor TR-1; R.F. chokes CH-1, CH-2 and capacitors C-1, C-2 and C-3 remove any radio frequency signals which may be picked up by the thermopile 24; and diode REC-2 allows quick discharging of capacitors C-4, C-5 during cooling of the thermopile. A thermostat 26 of high temperature rating is provided as a safety back-up to energize the alarm relay when a selected temperature is reached. Intruder alarm (Fig. 5).-Two antennas 41, 40 have respective capacitances to ground 45, 40<SP>1</SP> variable by the approach of a body to alter the frequency of oscillation of an R.F. oscillator and the resonance frequency of a tuned circuit coupled to the output of the oscillator, respectively. The rectified voltage across resistor 54 is fed through a first differentiating circuit 56, 57, 59, amplifier 55, a second differentiating circuit 61, 64, 63 and amplifier 62 to one winding 63<SP>1</SP> of a relay 64<SP>1</SP>, another winding 65 of which is fed with an opposing current. An increase or decrease in the output of valve 62 beyond a selected limit unbalances relay 64<SP>1</SP> to operate the alarm.
Patent GB-334009-A (GB)
Title: Improvements in the manufacture and production of aldehydes
IPC: C07C45/49
Filed: 1929-07-04
Abstract: 334,009. Johnson, J. Y., (1. G. Farbenindustrie Akt.-Ges.). July 4, 1929. Aromatic aldehydes; benzaldehydes; p-toluylaldehyde; p-chlorobenzaldehyde.-In the manufacture of aldehydes by treating neutral aromatic compounds with carbon monoxide under pressure in the presence of an anhydrous aluminium chloride catalyst, the catalyst is activated with a small amount of titanium chloride or a mixture thereof with other metal halides, such as the chlorides of iron and other metals occurring in aluminium ores. A very small amount of mineral acid, e.g. sulphuric or hydrochloric acid, may also be added to the reaction mixture, for the purpose of initiating the reaction. According to the examples, (1) benzene is treated with carbon monoxide at 30-35‹ C. under pressure in the presence of a mixture of anhydrous aluminium chloride with 1 per cent of titanium chloride; benzaldehyde is obtained; (2) toluene is treated with carbon monoxide at 35-40‹ C. under pressure in the presence of an anhydrous aluminium chloride catalyst prepared from bauxite containing ferric and titanium oxides, and in the presence or absence of a trace of sulphuric acid; p-toluylaldehyde is obtained; (3) chlorobenzene is treated as in example (1); p-chlorobenzaldehyde is obtained.
Patent GB-511031-A (GB)
Title: Apparatus comprising a low permeability core with an inductive winding thereon
IPC: H03J7/14
Filed: 1937-11-05
Abstract: 511,031. Inductances. KRAMOLIN, L. L. DE. Nov. 5, 1937, No. 20582/39. Convention date, Nov. 5, 1936. Addition to 451,097, [Group XXXVI]. Divided out of 510,941. Drawings to Specification. [Class 38 (ii)] The subject-matter is contained in Specification 510,941 as open to inspection under Sect. 91. The claims relate to the dimensioning of the low permeability core of an inductance arranged between the pole-pieces of a control magnet.
Patent GB-908060-A (GB)
Title: Containers for electrodes of storage batteries, of fibrous material, and method for their production
IPC: H01M4/76
Filed: 1959-06-16
Abstract: 908,060. Batteries. BORIOLO, L. A. June 16, 1959 [June 16, 1958; Dec. 10, 1958], No. 20595/59. Drawings to Specification. Class 53. Pencil-shaped electrodes of the type in which active material is packed in textile retaining tubes have the tubes made from synthetic fibres that are heat shrinkable and acquire rigidity in the process and further fibres of an inorganic nature resistant to chemical attack (e.g. glass fibre) so woven as to form substantially the whole of the inner face of the tubes. Further threads (e.g. of cotton) that are destroyed by the electrolyte may be added and assist initial rigidity for pouring the active powder in the tubes, subsequently assisting porosity when destroyed. Specification 809,884 is referred to.
Patent GB-480948-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/84
Filed: 1936-07-25
Abstract: 480,948. Cathode-ray tubes. NICOLL, F. H. July 25, 1936, No. 20604. [Class 39 (i)] To prevent deterioration of the screen by ion bombardment the beam is so focused by a combination of electrostatic and magnetic fields that the ions and electrons are separated and the former intercepted by a stop or screen. The Figure shows the invention applied to a tube such as that described in Specification 431,327. The beam, after leaving the cathode screen 2 is focused by a magnet coil 3 and passes through a modulator electrode 4 and anode 6 and is later focused by an electrostatic lens formed by the electrode 8. The ion beam takes the form indicated by. the dotted lines and is intercepted by a stop 10, the electron beam proceeding as indicated by the full lines and for the most part escaping the stop. The arrangement may be such that the spread of the ion beam is greater than that of the electron beam and it is intercepted by partitions such as that shown in the end 5 of the anode 6. Specifications 428,525 and 458,270 also are referred to.
Patent GB-776167-A (GB)
Title: Improvements in taps or valves
Inventor: BRADBURY THOMAS HENRY
IPC: F16K3/26
Filed: 1954-07-15
Abstract: 776,167. Valves. PHILLIPS TELESCOPIC TAPS, Ltd. July 4, 1955 [July 15, 1954], No. 20648/54. Class 135. A telescopic tap comprises a bearing sleeve 2, Fig. 1, fixed in the wall of a container, a pouring tube 3, Fig. 3, axially slidable in the sleeve 2 and having an outlet 4, a sleeve valve 5, Fig. 5, slidably mounted in the pouring tube 3, and a spring catch device fixing the sleeve valve 5 to the pouring tube 3 when the outlet 4 is closed by the valve, and means for operating the catch to release the valve from the pouring tube and anchor the valve in a stationary position when the pouring tube is partially withdrawn so that the pouring tube can be further withdrawn to open the outlet, the catch again locking the valve to the pouring tube on its return movement. With the ring 15 on the pouring tube sealing on the flange 1 on the sleeve 2, the valve 5, in the form of a longitudinally split spring cylinder is held within the pouring tube by means of lugs 8, 12 on the tube engaging slots 9a, 13 respectively in the-valve, the left-hand end of which covers the opening 4. On pulling the tube and valve outwardly through the sleeve 2, an outwardly bent cam portion 10 on the valve engages a cam slot 11 on the sleeve 2. This flexes the valve 5 so that the lug 8 rides out of the slot 9a into the slot 9 whereby the tube 3 may further be pulled outwardly with the lugs 8, 12 moving in slots 9, 13 so that the outlet 4 is moved beyond the left-hand end of the valve 5 which is now locked to the sleeve 2 by the slot 11. On pushing the pouring tube inwardly the hole 4 is again covered by the valve, the cam 10 is unlocked from the slot 11 and the valve flexes to re-engage the slot 9a on the lug 8. With the pouring tube pushed fully inwards the end 6a of a spline 6 on the tube leaves a sleeve slot 7 and may be turned to engage a cam 14 on the sleeve 2-to force the sealing ring 15 on the flange 1.
Patent GB-136270-A (GB)
Title: Improvements in or relating to Furnaces.
Inventor: FULLER HENRY
IPC: C21D1/46
Filed: 1918-12-12
Abstract: 136,270. Fuller, H., and Bedford, R. A. Dec. 12, 1918. No Patent granted (Sealing fee not paid). Crucible furnaces.-A gas-fired furnace of the kind comprising two chambers or crucibles, one of which is heated wholly or partly by the combustion products from the other, is used for the salt-bath treatment of steel. The furnace described has an outer steel casing a, an intermediate asbestos lining b, and a fire-clay body divided into two crucible chambers c, d connected by a flue passage k. The chamber c is heated by burners delivering through passages g, h opening tangentially into the chamber, and the products pass through the flue k to the chamber d and the stack. flue l. Additional heat may be supplied to the second chamber by a burner delivering through the tangential passago m.
Patent GB-1020227-A (GB)
Title: Improvements in or relating to microwave transmission systems
IPC: B64D45/00
Filed: 1963-05-24
Abstract: 1,020,227. Automatic frequency control; radio signalling. SIEMENS & HALSE A.G. May 24, 1963 [May 25, 1962], No. 20755/63. Headings H3A and H4L. In a microwave transmission system both the transmitter and the receiver operate on the superheterodyne principle and means are provided for controlling the frequency of the local oscillator. The transmission frequencies are allotted in the manner shown in Fig. 1 (not shown), a band a and band b being provided. Band a has eight channels 1a to 8a and band b eight channels 1b to 8b, the channel separation being 2f 0 , where f 0  is termed the fundamental frequency. The frequency separation between the top channel of the lower band and the bottom channel of the upper band is 3f 0  so that the frequency separation between like channels in the upper and lower band is 17f 0 . At a relay station, Fig. 2, incoming signals, e.g. on channel 7b are supplied to a frequency-changer 12 and the resulting I.F. signals 5f 0  are supplied via amplifiers 13, 16, to the transmitter frequency-changer 17 which converts the I.F. to the transmission frequency e.g. channel 7a. A free-running oscillator 1 operating at a frequency 400f 0 , is connected to the frequencychanger 17 and also supplies a frequencychanger 9 which receives an input of frequency 405f 0  derived from a harmonic producer 6 fed by a crystal-controlled oscillator 5 operating at the fundamental frequency f 0 . The frequencychanger 9 supplies a difference frequency of 5f 0  (equal to the I.F. frequency) to a frequencydiscriminator 10 having a centre frequency corresponding to 5f 0 , the resulting output operating a motor-controlled A.F.C. system 11 for the generator 1. The device 6 also supplies a signal of frequency 17f 0  via a filter 7 to a frequency-changer 3 receiving a signal 400f 0  from the generator 1 and the sum signal 417f 0  is supplied to the receiver frequency-changer 12. In a modification, the transmitter and receiver frequency-changer are each associated with a separate oscillator provided with its own A.F.C. system. In this case one of the oscillators may be frequency-modulated for the transmission of call signals, the appropriate A.F.C. loop being modified by the inclusion of a low-pass filter.
Patent GB-320427-A (GB)
Title: A method of hardening coatings of golf balls or other articles
IPC: C08J7/046
Filed: 1928-07-18
Abstract: 320,427. Geer, W. C. July 18, 1928. Balls.-Golf balls formed of rubber &c. or a rubber &c. coating which may contain pigment, are given a tough outer surface by treatment with an organic solution of a halogen salt of an amphoteric metal, e.g. tin tetrachloride in ethylene di-chloride. After treatment the ball is washed by immersion in ethylene di-chloride and then in ethyl alcohol in which caustic soda or other alkali may be dissolved.
Patent GB-1393968-A (GB)
Title: Friction clutch
IPC: F16D13/58
Filed: 1972-05-04
Abstract: 1393968 Friction clutches LUK LAMELLEN UND KUPPLUNGSBAU GmbH 4 May 1972 [4 May 1971] 20883/72 Heading F2C In a diaphragm spring clutch a stop 8 (Fig. 2), 10, 11 (Fig. 3) serves to limit the axial movement of the presser plate 3, so that leaf springs 7 interconnecting presser plate 3 and clutch housing 2 are not damaged on removal of the clutch from the flywheel (not shown). In Fig. 2 a member 8, attached to the presser plate by a rivet 6 has a portion 8a which limits the axial movement of plate 3 when it contacts the outer periphery of the diaphragm spring la. The periphery of the spring 1 is supported at other parts of its periphery on part of the housing 2. In Fig. 2 the member 8 also has a portion 8b by way of which the spring assists the action of leaf springs 7 to disengage the clutch. Two alternative forms of stop means are shown in Fig. 3, each affixed to the housing 2, a rivet 10 whose head 10a limits (by projecting between tongues of spring 1) the movement of the spring (and so the presser plate) and an abutment 11 whose part 11a stops movement of the spring 1. Other embodiments are also described with rivets or screws attached to the presser plate whose heads perform as the abutment 8a of Fig. 2, or with an alternative arrangement of stop means on the housing. In each embodiment the presser plate is allowed to move axially to an extent corresponding to maximum wear of the friction linings.
Patent GB-614573-A (GB)
Title: An improved printing press
IPC: B41F1/26
Filed: 1946-07-12
Abstract: 614,573. Printing-machines. WILLETT, H. B. July 12, 1946, No. 20967. Convention date, July 12, 1945. [Class 100(ii)] A printing-machine similar in construction to a platen machine but in which pressure is applied progressively over the type face is constructed in one form Figs. 1 and 3, with a vertical type bed and with a platen or impression member 35 curved to a large radius of curvature and fitted with curved racks 48 at each side. The member 35 is pivoted at 33 to an oscillating member 11 pivoted at 12 to the machine frame and connected by a pivot 14 to operating mechanism. The inner end 36 of the member 35 can move outwards against the action of an adjustable spring 42 which assists to keep the racks 48 in mesh with racks 32 secured to the type bed when the impression is being made. The racks 32 are secured to the type bed 19 which is connected to the machine frame 10 by bolts 23 engaging slots 22 in the frame so as to permit slight vertical movements of the racks 32 when engaged by the racks 48. These vertical movements are controlled by a cam 50 on the oscillating member 11 which can raise the racks against the action of springs 29. The arrangement ensures that the pressure is applied progressively by the action of the curved racks 48 and impression member 35. In modifications the type bed may be curved and the impression member co-acting there with either flat or curved. The member 35 may be pivoted at its lower end instead of the upper end.
Patent GB-915312-A (GB)
Title: Improvements in or relating to heels for footwear
IPC: A43B21/39
Filed: 1959-06-18
Abstract: 915,312. Heel protectors. PORTER, R. G. May 19, 1960 [June 18, 1959], No. 20974/59. Class 17 (3). [Also in Group XXV] The shank 1 of a top piece for a shoe heel includes a tapered portion which is of generally frusto-conical form, has at at least one side a flat, and increases in cross-sectional size towards the tread portion end of the shank, whereby the shank is a push-fit in the bore of the heel. As shown, the shank has flats at diametrically opposite locations so as to leave tapered enlargements 7. These enlargements are forced into and deform a reinforcing tube 11. The shank 1 may be integral with a tread portion or, as shown, a separate tread 9 of metal, leather, rubber or plastics may be held by a milled or knurled enlargement 8.
Patent GB-1180609-A (GB)
Title: A Respiration Measuring Device
IPC: A61B5/093
Filed: 1967-05-05
Abstract: 1,180,609. Spirometers. S.A.S.M.E. SOC. APPARECCHIATURE SCIENTIFICHE MEDICALI ELETTRONICHE S.r.1. 5 May, 1967 [10 May, 1966], No. 20978/67. Heading ASK. [Also in Division G4] A device to produce a spirogram of respiratory volumes comprises a first pair 2 of alternately operative variable volume containers 12, 13 for receiving air expired from a patient, and a second pair 3 of similar containers 12<SP>1</SP>, 13<SP>1</SP> to supply inhalation air, both pairs of containers being available to a patient through a mouthpiece 5 under the control of valves 19, 20, 19a, 20a, and there being measuring means associated with each pair of containers to measure the changes in volume, the measuring means being arranged to operate a recording device so as to produce the spirogram. As shown, a patient expires through a duct 4, 18 into the container 13 which expands while the second expiration container 12 which is open to atmosphere at the valve 19 contracts until valves 19, 20, actuated by contacts 40, 41 at each container, move to cause the operation of the containers 12, 13 to be reversed. Containers 12<SP>1</SP>, 13<SP>1</SP> providing air for inspiration operate alternately in a similar manner. The measuring device associated with each pair of containers comprises a disc 21 rotated by a cord 14, each disc having perforations (26) which (see also Figure 3 not shown) allow light from a source (24) to fall intermittently on a photo-electric cell (25), the number of electric pulses provided from each cell providing a measure of the degree of rotation of the disc and of the changes in volume of the containers. The output from the photo-electric cells is amplified (27), (35), modified in trigger (28) and multivibrator (32-34) devices, and is recorded as a measure of inspiration and expiration volumes at a pulse counter (31). The output from the cells is also arranged to rotate in opposite directions a motor (37) which moves a recorder to produce the spirogram. The valves 19, 20, 19a, 20a, which connect the interior of the containers 12, 13 ,  12<SP>1</SP>, 13<SP>1</SP> ,  etiher to atmosphere or to the mouthpiece, are actuated by solenoids controlled by an electronic circuit (Figure 5, not shown) which allows the valves to commute only when a container has expanded beyond a limit position (determined by contacts 40, 41) and when the container is stationery (determined by the cessation of signals from the corresponding measuring device). It is stated that the variable volume containers may comprise bellows, that each disc may be reflective instead of perforated, and that the light source and photo-electric cell may be replaced by a magnetic head and magnetised particles.
Patent GB-780586-A (GB)
Title: Roll film camera utilising narrow film
Inventor: SCHWARZBAUER HANS
IPC: G03B19/04
Filed: 1954-07-19
Abstract: 780,586. Photographic cameras. INTERNATIONALER BAU-UND INDUSTRIE TRUST REG. July 19, 1954, No. 20999/54. Class 98(1) The top and bottom of the casing 3 of a roll-film camera are each lined internally with a pair of plates (Figs. 3-6, not shown) the upper pair carrying means to prevent the reverse winding of the film, and having an opening for the stem of the film feed knob, a bearing for a film feed control spindle 28 and an exposure counter and the lower pair carrying a bearing for the other end of the spindle 28 and having a socket to receive the screw of the camera stand. The inner plates are arranged to overlap the outer plates so that a slot is formed along the upper and lower edges of the case to accommodate the rims of the back 1. Preferably a film guide, Figs. 7a, 7b is inserted between the pairs of plates to keep them in position and the lens plate is fixed to it by screws in holes 21. As shown in Fig. 8 the exposure counter is operated by rotation of the spindle 28, a complete rotation moving toothed wheel 25 and indicator disc 12 through one step. Abutment 27 then contacts leaf spring 26 and prevents the spindle from further rotation until release button 11 is depressed. The lens 30 is interchangeable.
Patent GB-730597-A (GB)
Title: Transistor oscillator circuits
Inventor: JACKSON ROBERT BLAKE
IPC: H03B5/24
Filed: 1952-08-21
Abstract: 730,597. Transistor oscillators. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 4, 1953 [Aug. 21, 1952], No. 21059/52. Class 40 (6). A feed-back circuit comprising a capacitor C and resistor R1 is arranged between a tap on potentiometer Rc in the collector lead and the emitter e. The resistor Rb is adjusted to give a substantially sine-wave output. By varying the value of resistor R1 and/or capacitor C, the frequency of oscillation may be varied. The emitter bias battery may be omitted and resistor R2 connected to earth.
Patent GB-330431-A (GB)
Title: Apparatus for playing a game
IPC: A63F9/02
Filed: 1929-07-09
Abstract: 330,431. Spear, C. July 9, 1929. Parlour games and the like. -Apparatus for playing a ring-throwing game comprises a board a adapted to be maintained in a vertical position for example by a swivelling strip e, a body i pivotally mounted upon the board to swing in a vertical plane or in both vertical and horizontal planes, and of such form and so counterbalanced that rings engaging the body at certain points will cause the same to incline so that the rings slip off, whereas rings which engage it at other points will remain thereon. The pivoted body may represent the head and neck of an elephant, giraffe, goose or other animal, and the board may be provided with a number of the representations having different scoring values. In the form shown, rings engaging the elephant's trunk slip off whereas rings engaging the neck are retained.
Patent GB-1421378-A (GB)
Title: Adiponitrile
IPC: B01J8/02
Filed: 1972-05-05
Abstract: 1421378 Adiponitrile IMPERIAL CHEMICAL INDUSTRIES Ltd 30 March 1973 [5 May 1972] 21088/72 Heading C2C Adiponitrile is manufactured by reacting a mixture of adipic acid and a molar excess of ammonia in the vapour phase in the presence of a dehydrating catalyst by passing the mixed vapours of adipic acid and ammonia through a series of catalyst beds in succession, each of which is operated essentially adiabatically, heat supplied to the mixed reaction vapours after entry to the first catalyst bed being provided by one or more heaters interposed between catalyst beds. Specified catalysts are phosphoric acid and boron phosphate and the catalysts may be supported on a carrier such as silica, alumina, pumice and kieselguhr. The first member or members in a series of catalyst beds may be duplicated so that one bed or set of beds can continue in use while the catalyst in the other is changed.