baber/WOPTO huggingface dataset:
Patent GB-1520782-A (GB)
Title: Sweep generator apparatus
IPC: G01R13/30
Filed: 1975-07-31
Abstract: 1520782 Cathode-ray tube displays for time measurement HEWLETT-PACKARD CO 31 July 1975 [11 Sept 1974] 32043/75 Heading H4T In order to superimpose at least two time separated parts of a repetitive waveform on a c.r.t., a first event 10, Fig. 4(a), triggers a main ramp waveform Fig. 4(c) which is compared with, for example, two reference levels 1 and 2. Logic circuitry (Fig. 1, not shown) then produces two trigger signals during each main ramp and further logic selects alternate trigger signals in successive main ramps to trigger an output sweep waveform Fig. 4(g) which is applied to the c.r.t. The levels 1 and 2 may be adjusted so that pulses 12 and 24. Fig. 4(a) are displayed by successive sweeps at the same part of the display. Further apparatus may be provided to indicate the time difference between probes 12, 24-which difference is a function of the difference between levels 1 and 2, Fig. 4(c).
Patent GB-263298-A (GB)
Title: Improvements relating to time lag devices of the dash pot type
IPC: H01H71/44
Filed: 1925-12-18
Abstract: 263,298. Ellison, G. Dec. 18, 1925. Automatic c i r c u i t - breakers; retarding devices.-Dashpots used in connection with time-lag devices in electric circuit breakers are constructed with a yielding connection between the piston and its rod and with means whereby relative movement between the two provides a free passage between both sides of the piston so that the dashpot ceases to function as such under the action of abnormal forces. The pistons b, c are slidable on the piston rod d between limits determined by the collars h, i, a shoulder on the piston rod, and the helical springs g. e. The outer piston b is slightly conical and engages a similar conical part of the casing a, while the two pistons are formed with interfitting conical surfaces. During normal working as a dashpot, the pistons remain in the relative positions shown, but in the event of an excessively rapid upward movement of the piston rod, the upper piston b uncovers the port j which communicates with the hollow end part of the rod and allows free flow of liquid from above to below the pistons. The port j and hollow rod may be replaced by a flat on the rod. Specification 218,137 is referred to.
Patent GB-160550-A (GB)
Title: Improved apparatus for printing and copying music or the like
IPC: B41J3/34
Filed: 1919-12-22
Abstract: 160,550. Walton, T. Dec. 22,1919. Index type-wheel machines for writing music. -In music typewriters of the kind in which the platen roller is revoluble to position the notes with respect to the stave, the printing-member consists of a single, horizontal type-wheel f slidable horizontally on a support g for impression. Inking is effected by a ribbon h; or the types may be inked. The type-wheel resembles that described in Specification 152,375 and may be provided with types for printing letter-press as well as music. Case-shift mechanism.-The type-wheel f may be provided with two sets of types and be movable vertically by means of a lever 9, Fig. 2, operating cams or slotted links 6 engaging pins 7 on the support 8 of the slide 9. Aligning for impression.-Aligning-notches 10, Fig. 2, in the type-wheel f engage a stationary tooth 11, which may be adjustable for regulating the impression. Platen rotation for writing music. The platen roller c is rotated by setting a knob 3 with reference to a scale 4. The knob is geared to a pinion 5 which is rotatably mounted on the base a and engages a square shaft z mounted on the carriage b and provided with pinions x engaging toothed wheels 1 on the platen roller. Platen scales. - The scale 4 is adjustable to facilitate transposing. Paper-supports. - The platen roller c may be provided with a renewable surface of rubber, cardboard, or the like. Letter-spacing mechanism.-The carriage b is propelled by a spring m, Fig. 2, and is provided with opposed racks d co-operating with escapement teeth l<1>, l<11> on a slide l. The printing- member f is provided with a yielding arm which, during the impression stroke, wipes idly over a pin on a lever n connected to the slide. When, however, the printing-member is returned the arm engages and then releases the pin, the slide being thereby drawn forwards and then returned by a spring o. The forward movement causes the tooth l<11> to engage the front rack, and the return movement causes the tooth l<1> to re-engage the rear rack, the carriage stepping to the left at each movement. As shown, the racks are staggered and the steps are equal to a half-tooth interval. The racks may however have the teeth arranged in register, the steps being then equal to a tooth interval. In the modification shown in Fig. 5, the slide l is connected by a link t<2> to a pinion t<1> engaging a pinion t provided with a ratchet-wheel r engaged by a pawl s on an arm s<1> carried by a lever s<4> engaging the printing- member f. To permit of variable spacing, the pawl may be adjustable with respect to the ratchet-wheel. As shown, the arm s<1> is connected by a cord w to a lever which is set with reference to a scale. Space-key actions; carriage-releasing arrangements.-A space-key p, Figs. 2 and 3, operates a slide k provided with teeth k<1>, k<11> for engaging the racks d, the carriage being released by means of a key q connected to the slide l. The key q may also be used as a space-key. Ruling-devices.-The type-wheel f is provided with a stave-ruling wheel f<1>.
Patent GB-1422826-A (GB)
Title: Charging circuit for rechargeable batteries
IPC: H02J7/00
Filed: 1973-07-05
Abstract: 1422826 Charging standby batteries IONLITE Ltd 13 May 1974 [5 July 1973] 32120/73 Heading H2H An automatic battery charging apparatus comprises a first timing means for sensing the time during which a battery is being discharged and a second timing means arranged to connect the battery to a charging device when the discharge period ends so that the battery is charged for a time determined by the time the battery was discharging. A battery 10, which may be a battery used for an emergency supply for electric lighting during a mains failure, has its discharge periods timed by a plurality of solid state timing circuits 16, 17, 18, the circuit 16 causing a relay 21 to be de-energised at the end of a first discharge period, the circuits 17, 18 causing de-energisation of relays 22, 23 at the end of a second and a third discharge period respectively. De-energisation of any one of the relays causes a respective time constant circuit 27, 28, 29 to be connected to a timing circuit 31 by contacts 24, 25, 26. At the end of a discharge period the timing circuit 31 causes energisation of a relay 15 so as to connect a high rate charging circuit 13 to the battery 10, the time for which the battery is charged being dependent upon which of the time constant circuits 27, 28, 29 is connected to the timing circuit 31 during the battery discharge period. Solid state devices may replace the relays if desired. A further charging circuit 11 is provided, permanently connected to the battery 10 for trickle charging purposes.
Patent GB-506891-A (GB)
Title: Improvements in the manufacture of groups of cooling or like tubes
IPC: F28D9/00
Filed: 1938-11-07
Abstract: 506,891. Heat - eschange tubes. CESKOMORAVSKA - KOLBEN - DANEK AKCIOVA SPOLECNOST, and SIMOTA, V. Nov. 7, 1938, No. 32208. Convention date, July 11. [Class 64(iii)] [Also in Group XXII] Groups of cooling tubes 4 are made by slitting a metal sheet at a number of places 1, 2 and 3, corrugating the sheet and bending towards each other, and joining, adjacent parts 8, 9 &c. to form the tubes 4. The unslit ends (Lh) of the corrugations are united as at 15 thus leaving openings 5, Fig. 4 (upside down) through which a cooling medium enters or leaves the cooling tubes 4.
Patent GB-655993-A (GB)
Title: Improvements in or relating to the brakes of scraper haulage gear and the like
IPC: F16D49/10
Filed: 1948-12-14
Abstract: 655,993. Band brakes. HOPKINSON & CO., Ltd., A., SIDEBOTTOM, T., and VOORSANGER, A. Dec. 14, 1948, No. 32271. [Class 103 (i)] In the band brake of a scraper haulage gear, clearance of the band 2 around the drum 1 is adjusted by raising or lowering the band by the rotation of a shaft 7, that has keyed to it an eccentric cam 4 which is gripped between two spring-loaded levers 5 and the face of a bifurcated U-shaped member 3 welded or otherwise rigidly secured near to the mid-point of the band. The shaft 7 may be locked in any position by adjusting a screwed bush 10 that clamps it against the brake frame centre-piece 9. The distance between the ends of the band 11, 13 may be adjusted by rotation of a rod 20, which has parts of its length threaded with slightly differing pitch threads engaging trunnion nuts 12 and 19. The brake is quickly applied by drawing back the lever 18 so that the operating linkage 14, 15, 16, 17 moves from the position shown dotted to the full outline position.
Patent GB-163383-A (GB)
Title: Improved apparatus for use in loading agricultural produce on to carts and other conveyances
IPC: A01D87/02
Filed: 1919-12-24
Abstract: 163,383. Stubbs, E. C. Dec. 24, 1919. Couplings for road vehicles. -The stub axles of the wheels b of a portable conveying apparatus drawn by a cart are connected by vertical spindles and arms b<4> to a link b<5>. A whipple tree b<6> is pivoted to the centre of the link b<5> and is connected by chains h to the cart.
Patent GB-1345978-A (GB)
Title: Controlled high voltage chopping gap
IPC: H01T4/20
Filed: 1971-07-09
Abstract: 1345978 Spark gap pulse generators EMIL HAEFELY & CIE AG 9 July 1971 [10 July 1970] 32278/71 Heading H3P A pulse circuit more particularly for the chopped impulse testing of transformers, comprises a string of spark gaps F 1 <SP>1</SP>-F 5 <SP>1</SP> of which the first at least has a trigger electrode, the others being fired via impedances R 1 <SP>1</SP> to R 4 1 connected to intermediate points on a parallel string of capacitors. When F 1 <SP>1</SP> is fired a voltage is developed across R 1 <SP>1</SP> which adds to the voltage across C 2 <SP>1</SP> to fire F 2 <SP>1</SP> and so on along the string. As shown. firing is assisted by trigger electrodes connected to taps on the impedances. The impedances may be resistors, inductors or the primary windings of transformers having their secondaries connected to respective trigger electrodes. Damping may be applied to the capacitor storing and a plurality of strings of spark gaps may be connected in parallel.
Patent GB-1459929-A (GB)
Title: Preparation of silicate compositions
IPC: C03B1/02
Filed: 1974-07-22
Abstract: 1459929 Preparing silicate compositions SAINT GOBAIN INDUSTRIES 22 July 1974 [24 July 1973] 32284/74 Headings C1M and C1A A process for preparing a composition comprising a silicate (e.g. for use in glass-making) comprises feeding heated sand and an alkali metal hydroxide solution to a fluidized bed formed by the sand at at least 320 C., the solution being distributed substantially uniformly within the bed and the bed being mechanically stirred substantially at the vertical level at which the solution is introduced into the bed. The composition produced may comprise silica particles coated or aggregated with sodium silicate. Optionally the composition may comprise at least one of sodium carbonate, limestone, feldspar and dolomite. The sand is supplied through a duct 23a (Fig. 5) to reaction chamber 20, in which the sand forms a fluidized bed 45. The fluidizing gas is supplied from chest 21 through grill 22. The gas is preferably at 750-850 C., and preferably is a CO 2 -containing gas obtained by combustion of methane. The sand is preferably pre-heated to 750-870 C. The alkali metal hydroxide solution (which is preferably a 40-70% by weight NaOH solution pre-heated to 100 C.) is supplied to the bed 45 through a duct 36 in a rotatable member 32. The end of the rotatable member 32 comprises an injection portion 37 (Fig. 2), which rotates while the solution passes therethrough into the bed 45, and a rotating stirring device, in the form of a mounting 49 and teeth 50. The member 32 preferably rotates at 10-45 r.p.m. Reaction product from the fluidized bed is removed through duct 24. If further optional constituents are used, they may be supplied through duct 60 to plates 61, on which they are heated by hot gas rising from the bed 45. Alternatively, the plates 61 may be omitted and the constituents supplied directly to the bed 45 (Fig. 6, not shown).
Patent GB-1277131-A (GB)
Title: Transmission system comprising a transmitter and a receiver for the transmission of information in a prescribed frequency band and transmitters and receivers to be used in said system
IPC: H04J3/06
Filed: 1969-06-26
Abstract: 1277131 Automatic frequency and phase control PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 June 1969 [29 June 1968] 32372/69 Addition to 1201923 Heading H3A The invention relates to a signal transmission system in which as in the parent Specification, a periodic pulse pattern, non-correlated with the main information signal, is transmitted simultaneously with the information and in the same frequency band. In the receiver, according to the present invention, the combined signals, in which the main information signal comprises bivalent pulses, are applied to two parallel arranged channels, the first provided with a pulse restorer for restoring the main information signal and the second including a difference producer to which is applied the received signal and also the output of the pulse restorer, the output of the difference producer comprising the auxiliary periodic pulse pattern which is applied to the modulation device in the circuit for automatic phase control of the locally generated pulse pattern. In one embodiment the first channel includes a pulse restorer comprising a double limiter 92, the output from which is applied via the pulse regenerator 67 to the utilization circuits 68. The second channel comprises difference producer 93 to which the output of pulse restorer 92 is also fed via an automatic amplitude control circuit 95; the output of difference producer 93 is applied over filter 96 to the modulation device 19, the second input of which is derived from local pulse pattern generator 10<SP>1</SP>, and the output of which controls the frequency of the pattern generator oscillator 16<SP>1</SP>. The outputs of the double limiter 92 and difference producer 93 are combined in a product modulator 97 and applied over filter 98 to control the gain in the automatic amplitude control circuit 95. Alternatively, the output voltage of the difference producer 93 may be directly applied as a control voltage to the automatic amplitude control circuit 95, after rectification and filtering, or the amplitude control may be applied to the received signal. In a second embodiment (Fig. 3, not shown) the second input for the difference producer is derived from the pulse regenerator 67.
Patent GB-1348828-A (GB)
Title: Agricultural machine
IPC: A01D41/14
Filed: 1971-07-09
Abstract: 1348828 Harvester header AGROSTROJ PROSTEJOV NARODNI PODNIK 9 July 1971 [9 July 1970] 32439/71 Heading A1F The detachable header 2 of a combine harvester is secured to the crop conveyor 1 by catches 5, 6 engaging behind flange 8 and roller 3 respectively on the crop conveyor and is able to pivot about a longitudinal axis to follow ground irregularities due to roller 3 and two rollers 4 mounted on flange 8 which engage the rear surface of header 2. Rollers 4 may be mounted on the header instead of the conveyor. In an alternative form, Fig. 5, catch 5 is replaced by a roller 21 which engages behind the top portion of flange 8, and additional rollers 19, 20 engage the periphery of flange 8. In both forms the flange 8 rests within the flared rearward extension 9 of the header carrying the catches which are operated by compression spring 7. The header 2 is urged to a level position by two spring-loaded tubular members 13, which are adjusted by nuts 18 and slide through brackets 17 on the rear of the header, engaging lateral projections 15 on the crop conveyor.
Patent GB-762444-A (GB)
Title: Process for the polymerisation of cyclic lactams containing seven or more ring members
Inventor: HAMANN ADOLF
IPC: C07D201/14
Filed: 1954-11-09
Abstract: Lactams containing seven or more ring atoms are polymerized with an alkali metal hydroxide in two stages by first bringing about the reaction between the alkali and the lactam at the boiling-point under considerably reduced pressure and then carrying out the polymerization at the polymerization temperature.  In a preferred embodiment of the invention, the pressure is such that the mixture boils within the range 120 DEG  to 150 DEG  C.  Specified lactams are e -caprolactam, enantholactam, heptane acid lactam and c -octane acid lactam.  In the example, e -caprolactam is polymerized in the presence of sodium hydroxide, the first stage taking place at 140 DEG C. and 12 mm. of mercury, followed by polymerization at 240 DEG  C. in the presence of oxygen-free nitrogen.
Patent GB-523534-A (GB)
Title: Improvements in reflectors for road lighting
IPC: F21V7/04
Filed: 1938-11-09
Abstract: 523,534. Road lighting systems; lamp reflectors. MEYER, L. W. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Nov. 9, 1938, No. 32559. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 13, 1939]. [Classes 75 (ii) and 75 (iv)] An egg-shell shaped reflector for use in a road lighting system is formed on one half of its length with facets 2, 2<SP>1</SP>, 2<SP>11</SP> which intersect one with another in mutually parallel planes C,C<SP>1</SP>,C<SP>11</SP> each facet comprising on the side nearer the centre of the reflector a major inwardly concave reflecting part H, G whose characteristic, section is of slight curvature and on the side away from the centre of the reflector a minor inwardly c,oncave reflecting part HJ whose characteristic section is of relatively great curvature, the tangents l 1 , l 2 , l 3  to the slightly curved parts at the points of intersection with the adjacent facets forming angles a', a<SP>2</SP>, a<SP>3</SP> with the intersection planes decreasing in value towards the end of the faceted part from about 90 degrees to 45 degrees. By the use of such reflectors the light from the light source 3 may be thrown mainly to the opposite side of the road, the light patch formed on the same side of the road by the rays D when reflectors having smooth surfaces 5, such as are described in Specification 515,418, are used being eliminated. The light sources 3 may be super pressure mercury vapour discharge tubes. The Specification as open to inspection under Sect. 91, states that the intersection planes extend normally to the major axis of the reflector in a major plane intersecting substantially normally the light source approximately at its middle point and that the tangents touching the facet parts extending towards the middle of the reflector make angles with the major axes increasing to a maximum of 45 degrees towards the end of the reflector. This subject-matter does not appear in the Specification as accepted.
Patent GB-171618-A (GB)
Title: An improved appliance for making spills
IPC: B27L9/00
Filed: 1920-11-18
Abstract: 171,618. Phillips, E. B. Nov. 18, 1920. Slicing.-A thin slice, to be used as a spill, is taken off the edge of a board by a razor blade i held between two overlapping channelled castings a, b at a short distance above the base of the channel which guides the board. The front casting a is made to hook over the edge of a table and the base. of the channel is inclined as shown. By suitably arranging the studs k and screws t which position and fix the blade, different parts of either cutting edge can be used in turn.
Patent GB-287638-A (GB)
Title: Improvements in or relating to brush-holders for dynamo electric machines
IPC: H01R39/38
Filed: 1926-12-23
Abstract: 287,638. Fletcher, G. H., and Metropolitan-Vickers Electrical Co., Ltd. Dec. 23, 1926. Brush-holders.-The invention relates to brushholders of the kind in which a rocker arm 5 pivoted upon the brushholder is caused by a spring 6 to engage a brush and press it into contact with the commutator or other collecting surface, and consists in providing the rocker arm with a spring strip 12 having a detent 13 which can be caused at will to engage with a projection 14 carried by the brush-holder when the rocker arm is withdrawn from engagement with the brush. As shown, the spring strip is attached to a pressure finger 11 upon which is formed or secured a clip 15 for restricting the movement of the spring. To cause the hook 13 to engage the projection 14, the rocker arm is. withdrawn to the position shown and pressure is applied to the spring at the point a in the direction of the arrow. To release the rocker arm, the pressure finger 11 is drawn back. Specification 250,010 is referred to.
Patent GB-1302730-A (GB)
IPC: B25B23/142
Filed: 1970-07-06
Abstract: 1302730 Torque wrenches FORGES STEPHANOISES 6 July 1970 [18 July 1969] 32610/70 Heading B3N A torque measuring wrench of the direct reading type comprises a driving means, and square 2, having a head 1, a flexible rod 4 secured to the driving means, a plate 7 pivoted on the axis 6 of the driving means and connected to the rod 4 having at least one, or preferably two markings 8, 8a and a cover 12 fixed to the driving means and having a slot 13 with linear graduations along its length. In use there is relative movement between the plate 7 and the cover 12 and the torque applied is read from the marking meeting the linear graduations. The shaft 4 is keyed at 3 to the head 1 and fits into a bore 16 shaped so that the shaft flexes about axis 6. The head is notched at 15 to accommodate freely the plate 7.
Patent GB-415615-A (GB)
Title: Improvements in and relating to the cylinder ports and passages of two-stroke cycle motors having carburettors or other vaporisers and crank-chamber scavenging pumps
IPC: F02B25/00
Filed: 1933-11-22
Abstract: 415,615. Cylinders. SCHNURLE, A., 91, Moltkestrasse, Cannstatt, Stuttgart, Germany. Nov. 22, 1933, No. 32666. Convention date, Nov. 23, 1932. [Class 7 (ii).] In a two-stroke engine, having crank-case compression two transfer passages 7 open into the cylinder on either side of an exhaust port 6. The passages are arranged obliquely so that the incoming mixture follows the course shown by the arrows, the piston, preferably, having a flat crown. Specification 282,697, [Class 7 (ii)], is referred to. The Specification as open to inspection under Sect. 91 comprises also arranging the inlet ports adjacent the exhaust ports from which they are separated by common walls. This subject-matter does not appear in the Specification as accepted.