baber/WOPTO huggingface dataset:
Patent GB-956144-A (GB)
Title: Improvements in and relating to the electro-mechanical production of half-tone blocks
IPC: H04N1/40
Filed: 1960-08-02
Abstract: 956,144. Copying by scanning. WILHELM STAUB G.m.b.H. Aug. 2, 1960 [Aug. 17, 1959], No. 26806/60. Heading H4F. In an arrangement for engraving a half-tone block in accordance with picture signals derived by scanning an original the engraving tool is controlled by a signal of triangular wave shape produced under the control of the picture signals and the screening (i.e. rastering) signals. As shown in Fig. 5, a triangular wave is produced by integrating in 19, 20 the rectangular wave derived by connecting the integrating circuit, alternately, to negative and positive potential sources 16, 17, respectively, under the control of a polarized relay 18 which operates its contacts 13a, 13b to the position shown in response to the fly-back portion of a sawtooth wave 6 derived from the rastering signal 10 and fed to the relay via capacitor 12 and contact 14, the relay remaining in the position shown until the algebraic sum of the sawtooth 6, the amplified blank of the triangular wave and the picture signal 5 (derived by scanning the original) become zero at which instant relay 18 changes over and the integrating circuit is changed from the other polarity source. The linear full portion of sawtooth 6 cannot operate the relay via capacitor 12 so that the circuit remains in this state until triggered to the state shown by the next fly-back portion of sawtooth 6 at which the cycle recommences. The control signal 4 for the engraving tool thus produced results in the production of a printing-plate in which the depth of penetration of the engraving tool is proportional to the tone values of the original for brightness values between black and white. A circuit arrangement utilizing electronic switches in place of the mechanical switches of Fig. 5 is described with reference to Fig. 6 (not shown). Specification 779,912 is referred to.
Patent GB-268384-A (GB)
Abstract: 268,384. National Cash Register Co., (Assignees of Christian, R. A.). March 29, 1926, [Convention date]. Cash registers with several item-value totalizers.- In a machine having banks of control keys with corresponding groups or lines of totalizers, each bank contains a " group " key the depression of which is necessary in total-taking operations for the purpose of selecting the totalizer containing the total of the desired group or line of totalizers. The group keys are normally locked against use and are freed only by the proprietor's key. The invention is described as applied to a Shipley machine adapted for restaurant purposes, the control keys being allocated to the different waiters and the total-taking mechanism being available for use by them to read their own totals. The release mechanism of Specification 215,010 is utilized and reference is also made to Specifications 8110/15, 191,350 and 191.351. As shown in Fig. 7 the group key 31 appertaining to the line of totalizers controlled by the first bank is placed in No. 1 position in the second bank and similarly with the other banks, and the group keys are each locked down by the bolt of a lock 32. The group totalizers occupy the zero positions in their lines and in adding operations are consequently engaged by the tripping of the differential latch at the zero point. When a group total is to be taken however, the depressed group key by means of an extension 140, Fig. 2, effects the trip at the zero position, thus taking the place of the zero trip pawl 38 retracted by the depression of the key.
Patent GB-1465000-A (GB)
Title: Catalyst component and catalyst system and process for the manufacture of particulate homopolymers or copolymers of ethylene
IPC: C08F10/00
Filed: 1974-06-18
Abstract: 1465000 Ethylene polymerization in a fluidized bed; catalysts therefor BASF AG 18 June 1974 [19 June 1973] 26891/74 Heading C3P [Also in Division B1] Ethylene is homo- or copolymerized with up to 20% of other α-monoolefins in an agitated bed of the polymer, the Ziegler-Natta catalyst components being supplied separately to the bed, the components being (1) an organoaluminium compound and (2) a supported titanium trichloride. Component (2) is obtained by (i) heating a compound of formula at 100 to 600 C. for 1 to 100 hours, (ii) reacting the product with phosgene at 80 to 350 C. until the product has a chlorine content of 10 to 76% and (iii) reacting the chlorinated product with the T; Cl 3  component by milling the ingredients for 5 to 100 hours with a milling acceleration of 4 to 6 m./s<SP>2</SP>. The process is typically carried out continuously and in the presence of hydrogen. In Examples ethylene is homopolymerized or copolymerized with butene-1 using Et 3 Al as component (1) and the defined reaction product as component (2).
Patent GB-1157048-A (GB)
Title: Process and device for the West Treatment of Textile Materials
IPC: D06B3/20
Filed: 1967-06-12
Abstract: 1,157,048. Textile treating apparatus. VEPA A.G. 12 June, 1967 [4 July, 1966], No. 26986/67. Heading D1L. Material 6 is passed over a sieve drum 2 in two laps, the first over rollers 5 and the second between these rollers and the drum 2, being taken off at 8 and passed between squeeze rolls 9. More than two laps may be made. A hollow body 11 inside the drum enables a smaller quantity of liquid to be used in the bath 1. A circulating fan is disposed on the principal axis of the drum.
Patent GB-257444-A (GB)
Title: Improvements in catheters for milking cattle and the like
IPC: A01J3/00
Filed: 1925-10-29
Abstract: 257,444. Lassen, N. I. Oct. 29, 1925. Catheters.-An instrument for insertion into the nipple of dairy cattle is provided with means for expanding it after insertion. The instrument consists of a tube divided longitudinally into two parts 1, 2 pivoted together at 3, each part of the tube being slightly bent as shown and formed with a circular groove 7 and flange 6. After the tube has been inserted it is expanded by sliding towards the flanges 6 a hollow ring 4 containing springs which bear against the members 1, 2.
Patent GB-602553-A (GB)
Title: Improvements in or relating to the air-cooling and supercharging of internal combustion engines
IPC: F02F1/06
Filed: 1945-10-17
Abstract: 602,553. Pumping apparatus. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. Oct. 17, 1945, No. 27164. Convention date, Nov. 13, 1944. [Class 110 (i)] [Also in Group XXVII] An air-cooled internal-combustion engine is supplied with cooling air by an axial blower 6 which also supplies air to a radial charging blower 9, both blowers being mounted on the same shaft 10. As shown, this is a tubular shaft, the blower 6 being connected to the fly-wheel 2 by a shaft 5 and gears 4, 17, 3. Alternatively both blowers may be directly driven from the shaft through resilient couplings and an exhaust actuated turbine may be keyed to the shaft.
Patent GB-930909-A (GB)
Title: Improvements in and relating to water sprinklers
Inventor: GREEN ALFRED JAMES
IPC: B05B3/16
Filed: 1960-08-05
Abstract: 930,909. Rotary sprinklers. WRIGHT RAIN Ltd. April 17, 1961 [Aug. 5, 1960], No. 27195/60. Class 69 (3). A step-by-step rotary sprinkler for spraying areas lying within a predetermined sector includes a support 1 on which a sprinkler body 2 with an outlet nozzle 8 is rotatably mounted. An arm 5 with a spoon-shaped head 7 and a counterbalance end 9 swings about a post 4, and is urged by a torsion spring 6 to bring the head into alignment with the water jet from the nozzle. Thus the jet forces the arm in a rearward direction away from the jet against the action of the spring 6, whilst the body 2 remains stationary due to friction imparted by a spring 21 acting upon a gasket 25 urged against the body. When the arm is returned by the torsion spring 6 it strikes a portion 26 of the sprinkler body causing it to move forward one step. This is repeated until a predetermined sector has been covered by the sprinkler body at which point a locking device is brought into play to lock the arm 5 with the body so that the head 7 is in alignment with the water jet from the nozzle. The reaction of the jet quickly returns the body to its starting position whereupon the locking device is released and the spraying cycle recommenced. The locking device comprises a pawl 12 with arms 13, 15 mounted on a horizontal pivot 11 on the body, and the arm 15 lies between two adjustable and stationary levers 16, 17 radially projecting from the support 1. When the arm 15 strikes the lever 17 the pawl is rocked and the arm 13 moves upwardly so that a catch 14 engages a locking face 10 on the end 9 of the arm 5, thereby locking the arm 5 with the body with the head 7 aligned with the nozzle. When the arm 5 is returned to its starting position the arm 15 strikes the lever 16, the lock is disengaged and step-by-step motion is re-started.
Patent GB-1211813-A (GB)
Title: Improvements in rotary-piston engines
IPC: F02B53/00
Filed: 1969-05-29
Abstract: 1,211,813. Rotary-piston engines. UMTED STATES ATOMIC ENERGY COMMISSION. May 29, 1969 [June 27, 1968], No.27252/69. Heading F1F. [Also in Division F2] A rotary-piston engine, described as a steam engine, comprising a circular piston 46 eccentrically mounted on a shaft 14 for rotation with line contact in a circular cylinder 12 and an outwardly sliding abutment 26 separating an inlet port 22 from an outlet port 24 includes an eccentric 28 having smaller and larger semi-circular portions to form abutment shoulders for a circular leafspring 38 secured by a lock-button 42 to a ring 36 which is in turn surrounded by a bushing 44 and the piston 46. A small clearance D allows the spring 38 to urge the ring 36, bushing 44 and piston 46 radially outwards to take up any wear that occurs between the piston and cylinder. The steam may be produced by means of radio-active isotopes.
Patent GB-1237241-A (GB)
Title: Attaching groups for nitroxide spin labels
IPC: C07D211/94
Filed: 1968-06-07
Abstract: 1,237,241. Nitroxides. SYNTEX ENERGY RESEARCH Inc. 7 June, 1968 [9 June, 1967], No. 27303/68. Heading C2C. [Also in Division C3] Nitroxides of the general formula (in which R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> denote alkyl groups that may or may not be substituted, A denotes at least one independent organic group and contains a substituent (" attaching group ") which is either -NHCOCH 2 X or -OCOCH 2 X where X is Br or I) may be prepared by reacting the corresponding free radical nitroxides in which A contains an amino or hydroxyl group with a haloacetic acid, anhydride or halide. The iodo compounds can be obtained from the corresponding bromo derivatives by reaction with NaI. Preferred compounds are those of the formula (in which Y denotes -NHCOCH 2 X or -OCOCH 2 X), and those of the first formula in which A completes a ring with C 1 , C 2  and the N atom, particularly N-(1-oxyl-2,2,5,5-tetramethyl-3-pyrrolidinyl)-bromo (and iodo) acetamide, and N - (1 - oxyl - 2,2,6,6 - tetramethyl - 4- piperidinyl) iodo acetamide. These and other nitroxides bearing the same " attaching groups " can react with biologically active molecules, including methionine and cysteine, and are useful for " spin-labelling " these materials.
Patent GB-170304-A (GB)
Title: Improvements in nail strip holders
IPC: A43D71/00
Filed: 1921-10-14
Abstract: 170,304. Miller, E. J. Oct. 18, 1920, [Convention date]. Nailing, hand-tools for. - A nail holding and spacing strip for nailing boot and shoe soles, as described in Specification 169,988, is provided with a box for holding the strip and allowing it to unwind gradually for use. The coiled slotted rubber strip 5, Fig. 2, with inserted nails 6 is placed in a box 1 between discs 11, 12, Fig. 3, to which it is temporarily attached by tacks 13<1>. The discs are attached to a spool 9 which rotates about a fixed spindle 8. Between the top of the spool and a fly nut 10 on the spindle is a spring 14 which allows the spool and discs to rotate frictionally against the bottom of the box. In this way the strip 5 can be fed gradually through expandable lips 7 of the box. An adjustable gauge 16 may be attached to the side of the box. The gauge is slotted as at 17, Fig. 4, and extends downwards alongside the sole and regulates the distance of the nail channel of the box from the edge of the sole.
Patent GB-401480-A (GB)
Title: Improvements in automatic stokers
IPC: F23K3/10
Filed: 1932-10-01
Abstract: 401,480. Fluid - operated stokers. RILEY STOKER CORPORATION, 9, Neponset Street, Worcester, Massachusetts, U.S.A. Oct. 1, 1932, No. 27334. Convention date, April 12. [Class 69 (ii).] Fluid-operated stokers comprising a reciprocating ram 15, Figs. 1 and 2, a main valve 24 and an auxiliary valve 55, are provided with means for giving an adjustable dwell at the end of the fuel feeding stroke, the arrangement being such that the ram makes complete strokes in normal operation, and shorter strokes if its feeding movement is obstructed. The dwell is obtained by an adjustable needle or other valve 85, positioned in the inlet 62 to one end of the main valve casing or in the exhaust 64 from the other end ; said valve is operable manually, or automatically, e.g. in response to variations in pressure in a steam boiler. The valve 55 is actuated before the end of the feeding stroke, by an abutment 21 engaging a cam surface 88 to operate a pivoted plate carrying a pin 93, the valve 85 so restricting flow that the reversal of the valve 24 is so slow that normally the feeding stroke is completed. In a modification, the valve 55 is actuated by an abutment 98, Fig. 8, acting on a member 97 provided with springs 100.
Patent GB-334073-A (GB)
Title: Self indicating scale with weight changing device
IPC: G01G1/28
Filed: 1929-09-09
Abstract: 334,073. Kraut, W. Sept. 9, 1929. Loose-weight apparatus.-A self-indicating weighing-apparatus having interchangeable supplementary weights for increasing the weighing range, and in which the supplementary weights may, by means of changing mechanism arranged thereunder, be applied in direct fashion to the main scale beam which is furnished with prismatic recesses for the reception of the weights, is characterized in that the supplementary weights are placed on the scale beam by means of cams and levers and by means of separate, verticallyguided supports supporting the appertaining weights on the underside. In Fig. 3 is shown a side view of one supplementary weight and its operating mechanism consisting of a cam shaft D, a lever G pivoted on a bearing F, a second lever L pivoted on a bearing K and engaged by the end of the lever G, and a vertically-guided weight carrier J connected by the lever L. When the cam shaft D is rotated by means of an external knob the carrier J is raised to lift the supplementary weight A off the weighbeam B, or is lowered to replace the same according to the direction of movement. In a modification, Fig. 4, the carrier J is guided vertically with the assistance of an additional lever M. The bearings of the levers and of the spindle D are carried by a bracket O fixed across the base housing. The bracket may be arranged to carry two or more sets of levers for moving two or more supplementary weights. The cam shaft D is common to all the weights and the cams are positioned so that one weight only at a time may load the beam.
Patent GB-903081-A (GB)
Title: Improvements in and relating to magnetic amplifier controlled relay systems
Inventor: SHAW NORMAN HARRY
IPC: H02H7/085
Filed: 1957-08-30
Abstract: 903,081. Magnetic amplifiers. ENGLISH ELECTRIC CO. Ltd. Aug. 28, 1958 [Aug. 30, 1957], No. 27396/57. Class 40 (9). Negative rate-feedback is obtained in a magnetic amplifier by rectifying the output and passing the signal back over a transformer to energize a feedback winding. As shown in Fig. 1, an increasing input signal increases the D.C. in the circuit supplying the load 12 and transformer 14, and the voltage fed back from 14 to winding 10b slows down the amplifier's response to the signal. A rectifier 15 cuts-out feed-back for decreasing input signals, feedback also being cut out when transformer 14 saturates. As shown in Fig. 2, the amplifier core and the transformer 14 are biased by current rectified at 22. The load is a relay 19 and an input signal de-saturates the core and by increasing the impedance of a parallel circuit causes the load to be energized. A main control winding 10a may be energized by one variable, such as motor current, and the feedback winding 10b may be subject to a second variable, such as a signal proportional to motor speed. A stalled condition in which motor speed is zero and motor current high may desaturate the amplifier; the delay produced by negative feed-back enabling the amplifier to distinguish between a stall and a momentary condition of zero speed. Specification 903,082 is referred to.
Patent GB-536292-A (GB)
Title: Improvements in direct current amplifiers
IPC: H03F3/40
Filed: 1939-10-06
Abstract: 536,292. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 6, 1939, No. 27397. Convention date, Oct. 7, 1938. [Class 40 (v) ] A slowly varying direct current from a photocell 11, used for example in fascimile transmission, is amplified by modulation in valves 30, 31 upon a chopper frequency from source 23, and thereafter amplified in valves 42, 43. The potential developed across resistor 21 is applied through resistors 34, 35 to the anodes of the valves 30, 31 and the grids of the valves 42, 43. As the valves 30, 31 conduct alternatively under control of the chopper frequency, the anodes are reduced to zero potential and thus the grids of the valves 42, 43 are energised with a square topped wave, the amplitude of which is proportional to potential across resistor 21. In Fig. 2 (not shown) the push-pull valves are replaced by single valves, and the output from the amplifier is rectified and developed across a cathode resistance.
Patent GB-392811-A (GB)
Title: Improvements in electromagnetically actuated gas compressors
IPC: F04B49/24
Filed: 1932-10-03
Abstract: 392,811. Reciprocating machines. TEVES MASCHINEN UND ARMATUREN FABRIK GES., A., 23, Gustavsburgstrasse, and KÍNIG, W., 71, Leerbachstrasse, both in Frankfort-on-Main, Germany. Oct. 3, 1932, No. 27434. [Class 35.] An electromagnetically actuated compressor comprises a mass which together with a spring system forms an oscillatory system of frequency equal to that of the alternating current. The piston 11, Fig. 1, is connected by a ball- and socket joint, an elastic steel wire &c. with an armature 10 carrying a movable core 6 and connected by springs 9 to a support 4 carrying a coil 8 and a stationary core 7. The support 4 is screwed to the casing 1 which is supported by springs or rollers to allow oscillation. Air enters through valves in the piston and is delivered past a diaphragm check valve 15 in the outlet passage which is spring-pressed to ensure sufficient pressure to prevent the piston striking the outlet valve plate 13. In a modification, a projection on the armature strikes a valve rod during normal action, opening a valve to admit air behind the diaphragm and raise the outlet pressure ; when the stroke is too small the valve remains shut and the air leaks off. The resistance to the piston may alternatively be increased by a dashpot, brake &c. Fig. 4 shows means for regulating the magnet strength to maintain the stroke approximately constant. Part of the compressed gas flows through a throttle valve 32 to a chamber 23 from which it escapes when a valve 21 is opened by a stop 20 on the armature, lowering the pressure in the chamber 23 and causing a diaphragm 15 to draw a core 34 towards a stationary core 33 within a choking coil 35 connected with the electromagnet. A further modified stroke controlling device comprises transverse springs on the armature in addition to the springs 9, Fig. 1, anchored to pistons subject to the air pressure admitted by the opening of a valve by the excessive stroke of the armature ; the oscillatory system is thus put out of synchronism.
Patent GB-1502798-A (GB)
Title: O-aminosulphonylglycolic amides
IPC: C07C/
Filed: 1975-06-30
Abstract: 1502798 O-Amino-sulphonylglycolic amides BASF AG 30 June 1975 [1 July 1974] 27463/75 Heading C2C New herbicidal compounds have the formula where R<SP>1</SP> and R<SP>2</SP> each independently denote an open-chain or cyclic aliphatic hydrocarbon radical which may optionally be halogen substituted, and R<SP>3</SP> and R<SP>4</SP> each independently denote hydrogen or an open-chain or cyclic aliphatic hydrocarbon radical which may optionally be halogen substituted. The compounds are made by reacting a glycolic amide of formula  with an aminosulphonyl halide of formula where X is chloro or bromo. Herbicidal compositions contain the new compounds and the usual additives.
Patent GB-910396-A (GB)
Title: Method of, and means for, testing a pair of conductors in an electrical system
Inventor: TALBERT DAVID GODWIN
IPC: G01R31/02
Filed: 1960-08-09
Abstract: 910,396. Protective arrangements. LUCAS (INDUSTRIES) Ltd., JOSEPH. Sept. 1, 1961 [Aug. 9, 1960], No. 27534/60. Class 38 (5). [Also in Group XXXVI] In a method of testing for the presence of open- or short-circuit faults on a pair of conductors 3, 4, Fig. 1, for example, for connecting a control device 5 to an instrument 6, signals from a continuous-wave or pulse generator are supplied to one end of the conductor 3 and at the other end are supplied with phase reversal via transformer 19 to the other conductor 4, which, at the control end, is connected to a phase detector, Fig. 2. Inductors 13 ... 16 prevent the signals reaching the control device and instrument. In the event of a short-circuit, a phase change in signals fed to conductor 4 is prevented and an alarm is given by the detector. Similarly, an alarm is given if due to open circuit no signals arrive at the detector. In the absence of faults the signals received at input terminals C, D of the detector are of equal amplitude and similar phase and transformer 31 provides no output. At the same time signals from generator 7 and supplied to terminal A, Fig. 2, render transistors 57, 61 conductive and cause illumination of alarm lamp 62. In the presence of a fault, however, a signal at terminal D is absent, or is reversed in phase or is reduced in amplitude with the result that the transformer 31 provides an output which is amplified by transistor 41 and rectified in diode 65 which by virtue of the signal applied at terminal B is rendered phase sensitive. The rectified voltage renders transistor 50 conductive and cuts off signals from terminal A to render transistors 57, 61 non-conductive. The lamp 62 is thus extinguished to signify a fault. A separate detector may be used to detect possible failure of capacitors 12, 34.