baber/WOPTO huggingface dataset:
Patent GB-1277647-A (GB)
Title: Method and means for reducing the duration of oscillation of a step motor
IPC: H02P8/32
Filed: 1969-07-15
Abstract: 1277647 Control of stepping motors ANKERWERKE AG 15 July 1969 [18 July 1968] 35581/69 Heading H2J A stepping motor 2 is damped by means of a system in which a signal representing the desired position of the motor is applied to a reversible counter 8 and a storage unit 7. The output of the unit 7 is applied to a comparator 6 which also receives a signal from the counter. A pulse emitter 9 actuates the counter which is connected to the coil-switching circuit 11 for the motor 2. The output of the comparator is applied to a generator 4 for transmitting pulses to a brake 3 coupled to the motor. The signal from the unit 7 depends upon the preselected number of steps to be performed by the motor and determines the duration and the instant of initiation of the time interval during which the brake is to operate, as well as the magnitude of the braking pulses. The maximum speed of the motor increases with the selected number of steps. When a large number is selected, the two input signals to the comparator reach correspondence and braking is initiated before the motor reaches its selected position at which the driving pulses are stopped and the counter is reset. A capacitor shunted by a resistor may be connected between the generator 4 and the brake whereby the magnitude of the braking pulses is reduced in a stepwise manner.
Patent GB-906650-A (GB)
Title: An improved tripod ladder
Inventor: ROBINSON CHARLES PORTLAND
IPC: E06C1/20
Filed: 1959-10-21
Abstract: 906,650. Ladders. ROBINSON & SONS Ltd. Sept. 8, 1960 [Oct. 21, 1959 ; Dec. 8, 1959], Nos. 35615/59 and 41600/59. Class 20 (2). A ladder 11 is mounted on a tripod comprising two front legs 10a, 10b and a rear leg 10c. The ladder is supported by a cross-bar 17 or 17<SP>1</SP> on pins 18 on the front legs and rests against a cross-bar 13 on which it is located by stops 16 or a stirrup. The legs 10a, 10b are connected together by a hinge 19 and another hinge connects the leg 10c and the bar 13 is detachable at one end to allow the legs to be folded together. A ladder may be hung by a rung on hooks on the front legs. The rear leg may be connected by a chain &c. to a rung of the ladder to locate both parts. The tripod may be used to steady the end of a long ladder leaning against a building.
Patent GB-1300513-A (GB)
Title: Multi-circuit brake system
Inventor: BURGDORF JOCHEN
IPC: B60T11/10
Filed: 1971-07-29
Abstract: 1300513 Multi-circuit brake systems ALFRED TEVES GmbH 29 July 1971 35646/71 Heading F2F In a multi-circuit, specifically a dual, braking system a tandem master cylinder 1 is actuable to supply pressure via lines D and E to a control valve 4 and to respective connections 73, 72 of two intermediate master cylinders 50 which also have connections 52, 51 respectively connected to brake circuits 10, 12; the control valve 4 is operable by the hydraulic pressure of lines D, E to actuate a vacuum booster 6 which is connected to a booster cylinder 8 having a piston displaceable to apply pressure via bores 74, 75 to the intermediate cylinders 50 to thereby further pressurize the circuits 10, 12. The cylinders 50 each incorporate a valve piston 59 (60) having a bore 80 (79) movable by pressure in line E (D) to pressurize the respective circuit 12 (10); pressure supplied to bores 74, 75 from the booster cylinder 8 acts to move a respective secondary piston 61 (62) which has a valve locking member 64 (63) engageable with the bore 80 (79) of the valve piston 59 (60) to shut off communication between connections 72, 51 (73, 52) and to thereafter mechanically move the valve piston 59 (60). Each valve locking member 64 (63) passes through a wall 66 (65) which separates chambers 58, 57 (56, 55); the valve pistons 59 (60) and the secondary pistons 61 (62) are of different areas and the secondary pistons 61 (62) are slidable in cylinders 67 (68) screwed into the bores 53 (54) of the intermediate master cylinders 50 which bores 53 (54) are stepped. The control valve 4 has pistons 14, 15 actuable by pressures in lines D, E to move a double headed valve body 16 to thereby disconnect a line B from a vacuum line A and connect line B to atmosphere; the lines A and B are connected to opposite chambers of the brake booster 6 and the left hand chamber is connected via a line C incorporating a non- return valve 7 with a vacuum source. Thus when the control valve 4 is actuated atmospheric pressure is admitted via line B to the right hand chamber of booster 6 to thereby operate booster cylinder 8. A pressure medium reservoir 9 is common to the booster cylinder 8 and the intermediate cylinders 50, and is connected in a line 20. The master cylinder 1 has a reservoir 3.
Patent GB-811764-A (GB)
Title: Improvements in or relating to hooke's joints
Inventor: SPINDLER JOHN EDWARD
IPC: F16D3/40
Filed: 1956-11-22
Abstract: 811,764. Universal joints. BLANCH & CO. Ltd., A. B. July 16, 1957 [Nov. 22, 1956], No. 35709/56. Class 80 (2). A Hooke's joint wherein the forks 14, 16 are coupled by a spider comprising ablock 5 having two through holes at right angles, a long pin 8 extending fully through one hole so that the ends project beyond the block, a pair of half pins 10 extending from the other hole beyond the block and a securing means 12 extending lengthwise of the half pins and transversely of the long pin. The securing means 12 may be a rivet or screw means.
Patent GB-797846-A (GB)
Title: Improvements relating to slicing machines
Inventor: DUYN ADRIANUS VAN
IPC: B26D1/153
Filed: 1955-12-13
Abstract: 797,846. Slicing machines. MAATSCHAPPIJ VAN BERKEL'S PATENT N. V. Nov. 19, 1956 [Dec. 13, 1955], No. 35712/55. Class 28 (2). The motor 16 of a gravity feed slicing machine is compactly located under and at the lefthand side of the knife 15 (looking from the other end of Fig. 1) and rearwards beyond the knife shaft 13, the motor shaft being geared at 21 to the underside of the knife shaft, and the motor shaft axis C-C is parallel to the knife plane, but inclines downward and rearward. The frame has an open bottom into which the rear end of the motor extends.
Patent GB-316078-A (GB)
Title: Improvements in, or relating to, cartons and other box-like containers
IPC: B65D5/38
Filed: 1928-12-04
Abstract: 316,078. Crossgrove, R. B. Dec. 4, 1928. Drawer-and-shell cases; contents, facilitating access to. - A drawer-and-shell case or carton comprises a member h disposed between the shell n and drawer a and one or more flexible members m enfolding the intermediate member h and having its ends secured to the drawer and shell so that when the member h is pushed out of the shell, the drawer a is projected approximately double the distance the member h is moved. The drawer a has an open front and sides and the member h has an open front, a lug t on the back panel of the drawer engaging a slot r in the back panel of the member h to prevent the drawer falling forwards in the open position. The flexible members m pass through slots k in the sides of the member h and one end of each member is secured to the outside of the bottom panel of the drawer and the other end to the outside of the shell. The front panel of the shell may have a tongue which coacts with the edges of the upper flap of the drawer to prevent it being projected from the wrong end of the casing.
Patent GB-377558-A (GB)
Title: Improvements in or relating to thermionic valve circuit arrangements
IPC: H03B19/10
Filed: 1931-12-24
Abstract: 377,558. Valve circuits. SOC. FRANCAISE RADIO-ELECTRIQUE, 79, Boulevard Haussmann, Paris. Dec. 24, 1931, No. 35744. Convention date, Dec. 24, 1930. [Class 40 (v).] In a thermionic valve circuit of the type in which an oscillatory circuit L C, as shown in the Figure, is connected at one end to the anode of a valve or several valves in parallel, and is coupled to the input of a pair of valves 1, 2 connected in push-pull, and in which a symmetry of the oscillatory circuit for high frequencies is compensated by an adjustable impedance C between the end of the circuit remote from the valve anode and earth, indication of correct balance is obtained by connecting a neon lamp at the point O of direct current plate feed to the oscillatory circuit, the balancing impedance being adjusted until the lamp is extinguished. A further arrangement, Fig. 2 (not shown), comprises an oscillator coupled to two frequency multipliers and a push-pull amplifier. In each case balancing about the mid-points of the oscillatory circuits is effected by variable capacities and neon lamps are connected between the mid-points and the cathode or earth points, through blocking condensers. Specification 352,357 is referred to.
Patent GB-508086-A (GB)
Title: Process and apparatus for treating metal sheets in liquids
IPC: B65G49/04
Filed: 1937-12-24
Abstract: 508,086. Treating metal sheets. REMY, VAN DER ZYPEN, & CO. Dec. 24, 1937, Nos. 35769 and 35770. Convention dates, Dec. 24, 1936 and Oct. 19, 1937. [Class 82 (ii)] A method of treating metal sheets in liquids, for example pickling, rinsing and the like, in. which the metal sheets guided in guiding members are moved through the liquid contained in a tank, is characterized by the fact that for the purpose of protecting the parts of the metal sheets which lie upon the guiding members, sheets are, during their passage through the liquid, lifted wholly or partly from the guiding members by means of the liquid itself producing a lift upon the sheets. In Figs. 1 and 2 the sheets freed from the retaining flap 6 pass through the guidemembers 12 to the exit rolls 8. Jets of water from nozzles 3 with deflecting members 4 hold the plate floating and arms 9 attached to chain 10 move the plate forward. Streamlined longitudinal bars 14 and safety arms 15 serve to prevent the sheets from escaping from the guides. In a modification the guides 12, Fig. 3, are curved steeply downward and. then upwards. The sheets are propelled uniformly forward by arms 9 and the shape of the guides is such that the sheets are caused to be lifted and to tilt. In another arrangement the propeller 18, Fig. 4, causes water to circulate around the horizontal partition 19 and in consequence the sheets moved by the arms 9 along the single-flanged guides 20 and held in position by members 9a assume a tilt as shown. Two or more rods such as 9 may be used for forwarding each sheet. The lift may also be caused by a stream of bubbles of air or steam issuing from fine openings in the pipe coils 21, Fig. 7, said openings being regulated by a fine adjustment. The longitudinal rails 14, the forwarding rods 9 and the points of the safety bars 15 may be made of chemically-resistant material.
Patent GB-815841-A (GB)
Title: Separation of guanidine values
Filed: 1956-11-22
Abstract: Guanidine values are recovered from an aqueous mixture comprising a guanidine salt, ammonium salts and melamine by a modification of the method described in the parent Specification which comprises the steps of adding to said mixture borate ions and an excess of ammonium ions to provide a crystalline precipitate of substantially pure guanidine tetraborate and separating said precipitate.  The borate ions may be provided by the addition of boric acid and the ammonium ions by passing gaseous ammonia through the aqueous mixture.  The guanidine tetraborate may be converted to other guanidine salts by treatment with the appropriate acid, e.g. the sulphate using dilute sulphuric acid, and the boric acid recovered may be re-used.  The products of fusion of ammonium thiocyanate, comprising guanidine thiocyanate, ammonium thiocyanate, thiourea and melamine, in 2 to 80 per cent, preferably 20 to 60 per cent, solution may be treated with 0.1 to 2.1 mols. of boric acid per mol. of guanidine, the mixture heated to 70 DEG  C. while ammonia is passed through until a pH of 7.5 is attained and the solution then cooled slowly to 15 DEG  C. and the white crystalline solid centrifuged and washed with water at 70 DEG  C.  The process may be also used where the hydrochloride, sulphate, sulphamate or carbamate of guanidine is present with ammonium salts.  Detailed examples of the recovery of guanidine tetraborate from ammonium thiocyanate fusion products by the above method are given.
Patent GB-522218-A (GB)
Title: Improvements in sheening of the pile of wool rugs and carpets
IPC: D03D27/00
Filed: 1938-12-08
Abstract: 522,218. Lustring. MATHIESON ALKALI WORKS. Dec. 8, 1938, No. 35851. Convention date, Dec. 18, 1937. [Class 15 (ii)] The pile of wool rugs and carpets is lustred by subjecting the pile to treatment in an aqueous caustic alkali solution in which the alkali concentration is less than 6 grams per litre and insufficient to adversely affect the pile, and then to treatment in an aqueous solution containing calcium hypochlorite, the concentration of available chlorine in the solution being within the range of 0.75 to 3 grams per litre. Preferably the calcium hypochlorite is substantially free from calcium chloride, and it may contain more than 50 per cent. of available chlorine. Subsequently to the hypochlorite treatment, the materials may be subjected to washing or to treatment with dilute acids, e.g., formic or acetic acids. Specification 317,437, [Class 15 (ii)], is referred to.
Patent GB-1026204-A (GB)
Title: Transverse severing apparatus
IPC: B65H35/10
Filed: 1963-09-12
Abstract: 1,026,204. Severing by tearing. A. WINDMOLLER, and M. GENNERICH, [trading as WINDMOLLER & HOLSCHER]. Sept. 12, 1963 [Sept. 12, 1962], No. 35987/63. Heading B4B. Severing apparatus for continuously tearing off lengths of multi-layer web or tube along lines of weakness provided thereon comprises a pair of clamping rollers 21, 22 and a pair of severing rollers 31, 32, of which the rollers 21, 31 are tiltable by a lever arrangement and held in their operative position by cam discs 3, 4 and in their inoperative position by springs 23, and a flexible intermediate member 14 between each of the lever arrangements 6, 9, 10 or 8, 11, 12 actuated by the cam discs 3, 4 and the levers 15, 16, 25, 26 carrying the tiltable rollers 21, 31. The apparatus is driven from a main drive (not shown), via a gear 1 engaging a gear 2 which rotates with the cam discs 3, 4. In operation, a multilayer web or flattened tube such as is used for bag-making, is fed by rollers (not shown) in the direction of the arrow 36 until the transverse perforations are between the rollers 21, 22 and 31, 32, when the levers 15, 16 and 25, 26 are tilted against the force of springs 23 to engage the rollers 21, 31, against the rollers 22, 32. Since rollers 31, 32 are driven by a gear 33 at a higher speed than the rollers 21, 22, which are driven by gear 33 via an intermediate gear 34, a length of material is torn free. The free ends of the levers 6, 8 then pass to a smaller radius curve of the cam discs and the rollers 21, 31 are retracted. Flexible intermediate members 14 which apply force to rollers 21, 31 and absorb counter-pressure occurring in the event of a blockage, may each comprise a loaded spring-pot or an hydraulic piston and cylinder, with a drawbar 13. A stop valve may be used to relieve working pressure in the hydraulic cylinders. Two flexible intermediate members may be used for each roller 21, 31 to effect an even pressure over the width of the material, and errors in roller adjustment may be compensated by adjustment of screws in the heads of the spring pots or cylinders. An hydraulic-pressure relief-valve maintains a constant counter-pressure at all positions of the pistons.
Patent GB-1485842-A (GB)
Title: Radioactive gas containing capsule
IPC: A61B5/08
Filed: 1974-08-15
Abstract: 1485842 Administering radioactive gases GENERAL ELECTRIC CO and MEDIPHYSICS Inc 15 Aug 1974 [15 Aug 1973 (3)] 36041/74 Heading A5T [Also in Division B4] A capsule 23, Fig. 2, containing a gaseous radioisotope for inhalation by a patient so that the lungs may be examined, comprises a shearable, gas-impermeable material consisting of vinyl-vinylidene chloride, polyethylene terephthalate or polysulphone, said capsule further containing a physiologically benign absorbent for products formed by the effect of radiation on the capsule material. The said absorbent may comprise moisture or water vapour. The' capsule is, in use, held in a cavity 25 of a valve assembly 22, the capsule being sheared open on rotation of a valve plug 32. A mouthpiece 21 is provided at one end of the valve assembly and a breathing bag 24 at the other end. The valve assembly is made of a lead alloy comprising about 5% by weight tin, and about 11% by weight antimony, the balance being lead. The radioisotope may be xenon-127, xenon-129, xenon-133, krypton-85 or radon-232. The capsule may contain air, nitrogen or oxygen as a diluent. A rubber bulb expressor (41), Fig. 4, (not shown) may be attached to said other end of the valve assembly instead of bag 24, said bag then being positioned between said one end of the valve assembly and said mouthpiece. The expressor (41) has a one-way valve (42) which admits air to the apparatus. A cannister (36) Fig. 3, (not shown), containing material for absorbing water vapour and carbon dioxide in the air exhaled by the patient may be included in the apparatus. The valve assembly may be used as a transportation unit for the radioactive gas-containing capsule when end plugs 35, Fig. 7, also of the lead alloy, are fitted into the valve-body 26 at the ends of cavity 25. A handle 33 is attachable to the plug to effect rotation thereof to break the capsule and release the gas.
Patent GB-829845-A (GB)
Title: Improvements in or relating to fountain type dispensing combs
Inventor: HEINRICH HERBERT
IPC: A45D24/26
Filed: 1957-11-19
Abstract: 829,845. Combs. COTY Inc. Nov. 19, 1957, No. 36053/57. Class 131 A reservoir comb comprises a channelled back 11, and a comb body 10 having a head 15 which is received in the back and is formed with an opening 18 and on one side, a groove 16 connecting a grooved passageway 19 in the back with branch passageways 17 to individual teeth. The comb body 10 is secured in the back 11 by glue and the passageway 19, which ends at the opening 18, conducts liquid from a passageway 21 in a cap 12, integral with the back and screwed to a resilient plastic reservoir 13 which is squeezed to express the hairtreating liquid through a dip tube 28 and an aperture 26 in a plastic washer 25. The branch passageways 17 at the ends of the comb are larger than those in the middle to equalize distribution of the liquid.
Patent GB-997897-A (GB)
Title: A circuit arrangement for use in the production of a voice frequency spectrum
IPC: G10L25/00
Filed: 1963-09-12
Abstract: 997,897. Formant tracking vocoders. TELEFONAKTIEBOLAGET L. M. ERICSSON. Sept. 12, 1963 [Sept. 17, 1962], No. 36069/63. Heading H4R. A synthesizer for a formant tracking vocoder in which the formant frequencies are transmitted as digital signals comprises, Fig. 2, a series parallel converter for each formant to convert the serial binary number on the line to a parallel form so that triggers, e.g. VII to V14, may be actuated and, via a diode matrix, operate a transistor switch to connect the appropriate one of capacitors C1 to C16, in parallel with the inductance L so tuning the inductance L to the frequency appropriate to the binary signal received from the line. The tuned circuits for each formant, e.g. F1 and F2 in Fig. 2, are serially connected to the output of a spectrum generator to obtain the synthesized speech. Fig. 3 shows in detail how the output of the diode matrix BO causes conduction of one of the transistors T1 to T16, in accordance with the binary input to the triggers, so connecting the appropriate one of capacitors C1 to C16 to tune the inductance L to the required frequency. The emitter follower amplifiers Ta and Tb, Tc, are provided to match the inductive circuit to the preceding and following circuits. Resistors R1 to R16 are connected in parallel with the tuning capacitors C1 to C16 to adjust the bandwidths of the tuned circuits to the required values.
Patent GB-937430-A (GB)
Title: Halogenated cyclic boron-nitrogen compounds and their preparation
Inventor: TURNER HAROLD SILAS
IPC: C07F5/02
Filed: 1959-10-24
Abstract: The invention comprises tetrameric borazynes of the general formula:- <FORM:0937430/IV(a)/1> wherein X represents chlorine or bromine and R represents an aliphatic group of the type <FORM:0937430/IV(a)/2> where R1, R2 and R3, which may be the same or different, are straight chain or branched alkyl groups, the branch not being attached to the carbon atom adjacent to the tertiary carbon atom, or R1 and R2 form part of a reduced six-membered ring.  Tetrameric borazynes may be prepared by reacting boron trichloride or boron tribromide with a sterically hindered aliphatic primary amine, RNH2, where R is as defined above, in the presence of an organic base which will abstract the hydrogen chloride or hydrogen bromide, the organic base being such that its complex with the boron trihalide is not so stable that the formation of this complex takes precedence over the hydrogen halide abstraction reaction, and in the presence of an inert, non-aqueous, substantially completely anhydrous liquid medium, preferably boiling in the range 50 to 150 degrees. Suitable organic bases are tertiary alkylamines such as triethylamine, diethyl-n-propylamine and tri-n-propylamine. Examples of liquid media are hydrocarbons and chlorinated hydrocarbons.  The boron trihalide may be introduced as such or a haloborate such as potassium tetrachloroborate may be used. Examples describe the preparation of tetrameric borazynes from t-butylamine, t-amylamine, and 1-methylcyclohexylamine.  The products are useful as additives for petroleum fuels for use in internal combustion engines.
Patent GB-875294-A (GB)
Title: Improvements in or relating to automatic telephone systems
Inventor: BENNION ROGER HAROLD
IPC: H04Q3/52
Filed: 1958-11-12
Abstract: 875,294. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Oct. 30, 1959 [Nov. 12, 1958], No. 36348/58. Addition to 814,597. Class 40 (4). In the system of the parent Specification in which a multiple of discharge tubes H, S is employed to connect the subscriber's line circuits with a link circuit, the line circuit is modified mainly as regards the ringing and release conditions. When a call is initiated, transistor TX1 conducts, and this in conjunction with earth on the slow scanning lead YSL primes tube VK1 which fires in response to a pulse on the fast scanning lead XSL. As a result a pulse on lead ZL causes the seizure of a link, and a pair of tubes H, S fire to effect the connection thereto. Transistor TX2 which is normally conducting is extinguished. A pulse applied to the triggers of tubes VK3, VK4 fires VK4 which is primed from the slow scanning lead YSL. Diodes D4, D6 are now biased to allow pulses to pass from lead OPL to the link. Dialled impulses extinguish TX1 and interrupt the flow of pulses. On a terminating call, the register applies a group marking on lead YML and a pulse on lead XML fires tube VK2, provided the line circuit is free, in which case TX2 is conducting and diode D7 is backed off. Tube VK3 which is-primed from lead YML fires, and a pair of tubes H, S fire to complete the connection. Scanning is interrupted while the register is in use and therefore VK4 is not primed. Negativegoing ringing pulses, amplified by TX3, are applied by way of the H tube to tube VK6 which is primed over lead RSL according to the ringing pattern to ring the called party. On reply TX1 conducts, and diodes D5, D6 are now biased to allow pulses to pass from lead IPL to the link, these pulses being interlaced with those from lead OPL. Ringing is cut off and speech is transmitted over the S tubes. Hanging up by either party extinguishes TX1 and stops the flow of pulses to the link, and as a result a pulse on common lead CDL fires tube VK5 and extinguishes tube VK3 or VK4 as well as the H and S tubes. If the called party fails to hang up after the calling party has done so, VK1 is prevented from firing by a delay circuit C7, R10 of which C7 charges while TX1 is conducting. This circuit also allows the use of forced release if the calling party fails to dial.