baber/WOPTO huggingface dataset:
Patent GB-953963-A (GB)
Title: Method of preparing strontium titanate
IPC: C01G23/00
Filed: 1962-07-30
Abstract: Strontium titanate is made by digesting, at the boiling-point, an aqueous solution containing strontium nitrate and titanyl nitrate, the pH of which is preferably adjusted to a maximum of 0.5 and containing about 1% excess over equimolar proportions of titanyl nitrate, to precipitate titanic acid; adding to the solution stoichiometric excess, preferably 100%, of hydrogen peroxide for converting the strontium nitrate to dioxide; adding sodium hydroxide to the mixture, whereby strontium dioxide precipitates; separating the mixed precipitate from the supernatant and igniting the precipitate at 400-800 DEG  C.  Titanyl nitrate is obtained by oxidizing with hydrogen peroxide a titanium sulphate solution, adding nitric acid followed by barium nitrate and filtering off barium sulphate.  An example is provided.  The product, when made from a radio-active strontium isotope, e.g. Se 90, may be used as fuel element (see Division G6).
Patent GB-445774-A (GB)
Title: Improvements in the treatment of textile fabrics
IPC: D06M15/423
Filed: 1934-10-12
Abstract: A calendar finish fast to washing is fixed on a fabric by means of a formaldehyde-urea or thiourea resin, if desired in combination with sizing materials and/or softening materials, dyestuffs, dulling and filling materials.  The resin may be applied to the fabric by printing, and may be hardened by the caldender treatment, repeated if necessary.  Calendering effects mentioned are stamping, gloss, moire, wave, and beetle effects. Impregnation with resin may be effected after calendering, the resin being applied in a non-aqueous solvent. In examples: (1) A mixed cotton and artificial silk fabric is bleached, dyed, and impregnated with a 20 per cent aqueous solution of carbamide resin containing 0,5 per cent tartaric acid, the fabric is slightly dried and passed through a stamping calender heated to 150 DEG  C.; the fabric is then heated to 110 DEG  C. for 5--10 mins. (2) A mousseline fabric prepared as in example 1 is subjected to a hot p  calender treatment whilst moist to obtain a gloss effect.  (3) A cotton fabric is impregnated with a 25 per cent solution of dimethylol - urea, slightly dried, and repeatedly passed through a hot calender roller until hardening is completed.  The treated fabrics are subsequently soaped, washed, and dried.
Patent GB-700499-A (GB)
Title: Improvements in or relating to apparatus for measuring the amount of liquid in a container
IPC: G01F23/26
Filed: 1951-01-29
Abstract: 700,499. Electrically measuring liquid quantity ; electric condensers. LIQUIDOMETER CORPORATION. Jan. 29, 1951 [Jan. 31, 1950], No. 29324/52. Divided out of 700,466. Class 37 A condenser whose capacity varies with the density and dielectric constant of a liquid comprises a float, e.g. a cylinder 21, Fig. 1, in a container 14, the capacitance being determined by the depth to which the float is submerged (i.e. the density of the liquid), and the dielectric constant. The device 12 Fig. 3 is combined with a condenser 2, whose capacity varies with the depth of the liquid, in the circuit of Fig. 3 to measure the weight of a liquid in a tank ; each condenser is in parallel with an inductance, the inductance 78 being equal to the reactance of the condenser 12 when the dielectric constant is unity; and the inductance 74 being equal to the reactance of the condenser 2 when free of liquid ; each condenser and inductance forms one arm of a bridge whose other arms are formed by the half-windings of transformer 50, one of which is shunted by a tapped resistance 60 ; the bridge output is amplified at 84, applied to a phase-sensing circuit 100, 110, to produce a D.C. voltage between 118, 124 whose sense is dependent on the direction of unbalance of the bridge ; this voltage is applied to valves 122, 128 whose cathodes are fed with A.C. from transformer 136 so that the output in transformer 146 is A.C. of phase dependent on the direction of unbalance of the bridge ; this is applied to a winding 152 of motor 70 which adjusts the tap 68 on resistance 60 to balance the bridge and actuate an indicator 158. It is shown in the Specification that the position of the contact 68 at balance is independent of the dielectric constant of the liquid but is a direct function of the density of the liquid and its height, so that the indicator 158 is in terms of weight of liquid. Specification 700,466 is referred to.
Patent GB-894779-A (GB)
Title: Improvements in bale sledges
Inventor: KNIGHT RICHARD JOHN
IPC: A01D85/00
Filed: 1959-08-27
Abstract: 894,779. Bale sledges. CURLIGHT INDUSTRIES Ltd. Aug. 24, 1960 [Aug. 27, 1959], No. 29378/59. Class 94(1). [Also in Group XXX] A bale sledge comprises a base frame 3 and a bale fork unit mounted on the frame so as to be movable from a substantially horizontal position to an inclined position, and means for moving the unit between these two positions, said bale fork unit comprising a plurality of equally spaced right-angled prongs 1 fixed to a common transverse roller 2. The roller is mounted on base frame 3 which has a platform 4 and skids 5, the inner prongs being braced by members 6 extending to collars 7 on the roller. Levers 12 are connected through links 13 to an adjustable rod 14, which is connected to the outermost prongs on either side by links 8, 9. In use, the sledge is towed with the fork unit in the horizontal position, the operator standing on a platform 4 and stacking the bales onto the prongs, the unit being inclined by depressing the levers 12 for unloading. In another embodiment the prongs 1 are rigidly attached to a rectangular bar replacing the roller and the tilting means comprises hinged plates and a linkage system. The bale fork unit may be removably mounted, and the number of prongs may be increased to alter the loading capacity. The tilting action may be operated hydraulically e.g. from a tractor, and the sledge used for picking up bales.
Patent GB-189439-A (GB)
Title: Improvements in or relating to folding photographic cameras
IPC: G03B3/02
Filed: 1922-10-27
Abstract: 189,439. Baille-Lemaire et Fils. Nov. 25, 1921, [Convention date]. Cameras with baseboard folding; fronts and baseboard fittings for. - In a folding baseboard camera the U-front 1, Figs. 1 and 2, is pivoted on a self erecting hinge 5 to a sliding plate 3 moving on the rails 11 of the baseboard. The front and the plate are clamped firmly in position on the rails by two wedges 9 which are outwardly urged by a retractable spring. The wedges are retracted by the knobs 13 and when released engage between the tail pieces 8 of the front 1 and the rails 11, thereby pressing the forward portion 4 of the U-front into contact with the slide 3, as well as clamping the slide on the rails. In tolding the camera the tail parts 8 pass through recesses in the sides of the slide 3.
Patent GB-797555-A (GB)
Title: Improvements in or relating to electrical resistance welding apparatus
Inventor: COOKE FRANK ARTHUR
IPC: B23K11/31
Filed: 1955-10-14
Abstract: 797,555. Welding by pressure. ROLLSROYCE, Ltd. Jan. 4, 1957 [Oct. 14, 1955], No. 29440/55. Class 83 (4). [Also in Group XXVI] In an electric resistance spot, stitch or step-by-step seam welding machine having fixed and movable rod or roller electrodes, the movable electrode is actuated by a first piston, the stroke of which is determined by a second fluid-pressure-actuated piston. The movable electrode 11 is connected to the rod 26 of a piston 24 having a central groove 28 vented through a duct 30 to atmosphere. The second piston 31 in a second cylinder 17 on the end of the first cylinder 14 carries a buffer 36 which abuts a skirt 25 on the first piston 24. In operation, the movable electrode 11 is fully retracted to allow insertion of the work by exhausting the lower chambers of both cylinders by linked valves 44 and operating control valve 45 to supply air at 80 - 100 1bs./sq. inch to the upper chamber 38 of the first cylinder. The electrode 11 is raised into a position adjacent the work by actuating valves 44 to supply air at 80 - 100 lbs./sq. inch to the lower chamber 40 of the second cylinder 17 and air at 60 lbs./ sq. inch to the lower chamber 43 of the first cylinder 14. Welding is then effected by alternately connecting the upper chamber 38 of the first cylinder 14 to exhaust and to the pressure source by actuating the control valve 45 under the control of an electronic timer, a switch 48 being operated when the chamber 38 is exhausted to connect up the welding circuit. In a modification welding current is passed when the upper chamber 38 is supplied with air at 30 1bs./sq. inch, the chamber being exhausted after welding so that an increased pressure on the electrode exerts a forging action.
Patent GB-573301-A (GB)
Title: Improvements in adjustable hydraulic shock absorbers
IPC: F16F9/44
Filed: 1939-11-07
Abstract: 573,301. Shock-absorbers. EZBELENT, G. E. Nov. 7, 1939, No. 29589. [Class 108 (iii)] A hydraulic shock-absorber comprises a cylinder 1 closed at the top by a head 3, a piston 4 on a rod 5 connected to the end connection 18, a partition 2 spaced from the head 3 to enclose a compensating chamber of the same volume as the piston-rod 5 and a conduit 6 mounted on the partition 2 and extending through a hole 13 in the piston 4 into the cylinder. The cover 8 excludes dust from the piston-rod. The end connection 18 has a threaded part 17 adjustable on the end of the piston-rod and the other end connection 11 has a filling plug 10. A disc 12 with aperture 20 closes the circulation orifices of the piston at the end of the stroke forming a hydraulic brake. The conduit 6 has a variable exterior so that at the part 14 the passage of liquid through the piston aperture 13 is made more difficult to vary the damping effect. The head 3 has synthetic rubber packing 22 held in place by a tapered metal packing piece 24 and screwed ring 23 and the piston is fitted with a valve 25 and spring 27.
Patent GB-916270-A (GB)
Title: Improvements in or relating to electronic data storage apparatus
Inventor: MINNICK ROBERT CHARLES
IPC: G11C15/02
Filed: 1960-08-27
Abstract: 916,270. Magnetic storage apparatus. BURROUGHS CORPORATION. Aug. 27, 1960, No. 29635/60. Class 40 (9). [Also in Group XIX] Data words stored in rows of a magnetic core matrix (as shown in Fig. 3, three words are stored in rows Y1-Y3) include a " tag " portion of four bits which is compared with the contents of register 24, equality operating the corresponding driver of unit 34 to read out the rest of the word from cores 33. The tag bits are stored in transfluxors 12, which are " blocked " to store 0 and " unblocked " to store 1. Blocking is effected by current in line 18 only; 18 links the central aperture and thus produces around aperture 16 the flux pattern shown in the " 0 " column of Fig. 7, so that current in line 22 is then unable to cause flux change. The unblocked state is produced by simultaneously energizing 18 and 22 to produce the pattern shown in the top right-hand corner of Fig. 7; energizing of 22 can then switch the flux in the right-hand legs. Comparison is effected by first providing " ready " pulses on lines 22, each in a sense dependent on the bit stored in the corresponding part of 24; these have no effect on transfluxors storing 0's, but leave the unblocked cores as shown in rows 2 and 3 of Fig. 7. Next a " compare " pulse of opposite sense on each line 22 to the " ready " pulse switches all unblocked cores to produce on their output lines 28 signals of polarity depending on the equality or otherwise of their stored bits and the corresponding 24 bits (see rows 4 and 5). Added to the signal on each line 28 is a pulse from a generator 42 of a magnitude equal to the number of 1-bits stored in 24 multiplied by the magnitude of a transfluxor output pulse, and of such a sense that the resultant signal on row 28 is zero only in the case of identicity of tags. Fig. 4 (not shown) shows schematically means for reading from and writing into the matrix, including a timing pulse source and control and data connections to a computer. The extension to 3-dimensional matrices is also described.
Patent GB-665584-A (GB)
Title: Improvements in and relating to phase angle responsive circuits
IPC: G01R25/00
Filed: 1949-11-21
Abstract: 665,584. Phase-difference measurements. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 21, 1949 [Nov. 26, 1948], No. 29731/49. Class 37. [Also in Group XXXV] A phase angle responsive circuit comprises means for deriving a signal voltage in phase with the voltage in a high-frequency circuit, means for deriving a second signal voltage in quadrature with the current in the circuit, and electron discharge means utilizing both of the signal voltages for deriving a third voltage responsive to the phase angle between the voltage and current in the circuit. A concentric transmission line of the air dielectric type comprises a central conductor 1 and an outer tubular conductor 2, through openings in which are inserted a probe 3 and a loop 4. The probe 3 derives a signal voltage, proportional to and in phase with the signal line voltage at that point, which is transmitted through a small concentric conductor 5 to the control electrode 7a of a valve 7. The loop 4 has induced in it a small signal voltage proportional to and in quadrature with the current in the transmission line. This signal voltage is transmitted through a concentric conductor 6 and impressed on the control electrode 14b of a valve 14. A reference voltage is obtained from a tetrode 8 controlled by a piezo-electric crystal 11. A capacitance 9 and inductance 10 form a resonant circuit tuned to the fundamental frequency of the crystal, a second resonant circuit 12, 13 being tuned to the third harmonic, which is impressed on the control electrodes 7b, 14a of the valves 7, 14. The valve 7 serves as a mixer and limiter, its output being passed to a limiter valve 18 and thence to a control electrode 26a of a gating valve 26. A capacitor 23 and inductance 24 form a resonant circuit in the output circuit of the valve 18, a resistor 25 giving the circuit a broad band pass characteristic. The valve 14 serves as a mixer and limiter, its output being passed to a limiter valve 31 and thence to a control electrode 26b of the gating valve 26. The control electrodes 26a, 26b function as overlapping gates to control the anode current of the valve 26 so that it varies with variation in the phase angle between the two signal voltages and thus with the phase angle in the transmission line. The unidirectional output voltage of the valve 26 is impressed on the control electrode of a valve 37 through a voltage dropping resistor 38. The cathode of the valve 37 is maintained at a constant positive potential by a gas-filled voltage regulator valve 39<SP>1</SP>. The output voltage of the valve 37 is applied to two solenoids 39, 40 in series operating switches 43, 44 to energize a reversing motor controller 45. This controls a motor 46 which adjusts a variable capacitor 47 forming part of an automatic tuning system. Alternatively the output of the valve 26 may include a voltmeter calibrated in terms of phase angle. Specification 664,227, [Group XXXV], is referred to.
Patent GB-307282-A (GB)
Title: Improvements in compensating devices for rudder and elevator controls of airplanes
IPC: B64C13/00
Filed: 1928-02-23
Abstract: 307,282. Couzinet, R. A. A. Feb. 23, 1928. Divided on 312,258. Controlling.-Auxiliary rudder or elevator sur. faces are pivoted on the main surfaces so as to be movable independently, and to move automatically, when the main surfaces are moved, in the opposite direction thereto. Such arrangements are stated to compensate for unequal thrust due to stoppage of a side-engine, or for incorrect setting of fixed plane surfaces. To the end of the rudder 113 is pivoted an auxiliary surface 118 connected to an intermediate rudder-bar 121 and operated by a control wheel 120. The bar 121 is independently pivoted on the same axis as the rudder 113. The surface 118 may be adjusted relative to the rudder as shown in Fig. 2, and when the rudder is moved the surface 118 is moved oppositely thereto by its control cords. The pivotal axes of the rudder 113 and the surface 118 are preferably parallel. Similar arrangements axe used for the elevators.
Patent GB-363737-A (GB)
Title: Improvements in weather screens for motor vehicles
IPC: B60J1/04
Filed: 1930-10-06
Abstract: 363,737. Hinges. GODIN, A., Aldine Place, 142, Uxbridge Road, Shepherd's Bush, London. Oct. 6, 1930, No. 29819. [Class 65 (ii).] A hinge for a vehicle windscreen comprises a tubular member having a channel-sectioned part to embrace the edge of the screen and a second tubular member fixed to the body and having a longitudinal slot. The first tubular member fits closely and rotatably in the second, the angle of rotation being determined by the width of the slot.
Patent GB-1451570-A (GB)
Title: Preparation of a phenol
IPC: C07C39/07
Filed: 1974-07-05
Abstract: 1451570 Preparation of 3,5-dimethylphenol SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 3 July 1975 [5 July 1974] 29934/74 Heading C2C A process for the preparation of 3,5-dimethylphenol comprises converting 3,5,5-trimethyl-2- cyclohexen-1-one to 3,5-dimethylphenol in the gas phase using a catalyst comprising cobalt and molybdenum on an aluminium-containing carrier which catalyst has been calcined at a temperature above 800‹ C.
Patent GB-995349-A (GB)
Title: Method of manufacturing ª-hydroxy carboxylic acids, salts and ester lactones thereof
IPC: C07C51/353
Filed: 1961-08-18
Abstract: a -Hydroxy-glutaric acids, of formulae <FORM:0995349/C2/1> where R1 and R2 are hydrogen atoms or alkyl, aryl and aralkyl groups, their alkali metal salts, and lactones are prepared by heating an a -hydroxy-carboxylic acid <FORM:0995349/C2/2> with an a -hydroxy-carboxylic acid <FORM:0995349/C2/3> in the presence of an alkali metal compound and an oxide or hydroxide of a metal of valency not less than 2.  The reaction is by dehydration and examples of (2) are lactic acid, a -hydroxy-butyric, valeric, caproic, caprylic, capric, lauric acids, g -carboxy-a -hydroxy butyric, a -hydroxy-b -phenyl propionic and butyric acids and a -hydroxy-g -benzyl butyric acid and of (3) are glycollic, mandelic in addition to those of (2). Sodium and potassium hydroxides are preferred and the carbonates may be used, and the catalysts may be hydroxides or oxides of zinc, iron, chromium, tin, magnesium, calcium, manganese, cobalt, nickel, copper, cadmium, and barium.  The alkali metal salts are first formed and converted to lactones by acidification and esterification and then to acids by acid or alkaline hydrolysis. Examples describe the preparation of a -hydroxy glutaric acid, a -hydroxy-b -methyl glutaric acid, a -hydroxy-b -methyl-g -ethyl glutaric acid, and a -hydroxy-g -phenyl glutaric acid through their corresponding alkali metal salts and butyro lactones.
Patent GB-648083-A (GB)
Title: Improvements relating to light and heat sensitive cells
IPC: H01J40/14
Filed: 1948-11-18
Abstract: 648,083. Photo-electric cell circuits. SCOLES, G. J., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Nov. 18, 1948, No. 30016. [Class 40 (iii)] The components in the output current of an A.C. fed photocell which are due to the selfcapacitance and leakage resistance of the cell (here represented by' dotted lines) are compensated by feeding the output of the cell with a suitable phased current from the A.C. supply. As shown, the cell Q and resistor RL are connected in series across the secondary of a transformer T. A small voltage derived from a tapping on the secondary winding is adjusted by potentiometers P1 and P2 and fed through condenser C1 and resistor R1 to balance the undesired voltage component developed across resistor RL. In another embodiment, Fig. 2 (not shown), the potentiometers are omitted, C1 and R1 being made variable.
Patent GB-839177-A (GB)
Title: Improvements in or relating to pig rearing stalls
Inventor: BIEHL HEINRICH
IPC: A01K1/02
Filed: 1958-09-22
Abstract: 839,177. Farrowing houses. BIEHL, H. Sept. 22, 1958, No. 30218/58. Class 20(1) A farrowing house comprises outer walls 2, 4 and inner walls 14 formed from spaced bars which are positioned a sufficient distance above the floor of the pen to allow only piglets to pass underneath. The walls 14 are adjustable laterally by a screw 44 engaging notches 39 in a fixed bar 36 and vertically by sliding connections 50, 52 with adjusting screw 54 and their height can be varied by adjusting members 28, which slidably engage the vertical bars 18 of the walls. The bar 60 provides a further obstruction for the sow.
Patent GB-965609-A (GB)
Title: An improved appliance for applying polish to floors and other surfaces of large area
IPC: A47L13/29
Filed: 1962-08-08
Abstract: 965,609. Polishing appliances. R. C. STOKES. April 24, 1963 [Aug. 8, 1962], No. 30361/62. Heading A4F. A polishing appliance comprises a polishing head embodying a rigid foundation plate 1, e.g. of wood, and having attached to its underface a resilient pad 2 over which is spread a polish applying cloth 8 having portions extending through slots 4 in the plate 1 and retained by fasteners, e.g. press studs 9, against the upper surface of the plate 1. The cloth 8 is being so carried that it does not overlie boundary edges of the plate 1. A socket 5 for a handle is secured to the plate 1.
Patent GB-895280-A (GB)
Title: Improvements in or relating to type printing telegraph apparatus
Inventor: WALLENS ANTHONY WALTER
IPC: H04L17/28
Filed: 1960-09-02
Abstract: 895,280. Typewriters &c. CREED & CO. Ltd. Sept. 2, 1960, No. 30366/60. Class 100(4) A teleprinter comprises a type printing head 1 mounted on a carriage 2 driven by power in both directions, the letter-spacing being controlled by an electro-pneumatically controlled pawl mechanism and a ratchet wheel 7 rotatable by a leadscrew 5, itself turned by the movement of the carriage. The carriage 2 has a depending portion 6 connected to a belt 39 driven by a pulley 40. The pulley is driven to effect carriage-return movement of the type-carriage by a motor-driven shaft 45, when a hydraulically operated piston 51 is energised through a pipe 53. The pulley 40 is continuously urged in the other or letter-space direction by another motor 54, clutch 56 and gears 57, 58, 50. When the carriage is being urged in letter-space direction it is controlled by the pawl mechanism shown in Fig. 2. Upon the receipt of a letter-space signal an electromagnet 34 in a type-head-feed selector mechanism, Fig. 3, is operated and this withdraws a pin 35 from a hydraulic cylinder 30 and fluid from a supply source pipe 96 is directed to feed line 94 and then to pawl operating cylinders 20, 21, Fig. 2, by pipes 97, 98. Pawls 9, 10 when operated release the ratchet wheel 11 and the carriage moves until a pin 36, Fig. 3, operated by a powered cam 37, returns the piston 29 of cylinder 30 whereupon pressure in feed line 94 is released to a sump pipe 99, and the pawls 9, 10 re-engage the ratchet wheel 11. During the letter-space movement a vertical arm 89 engages a series of projections 77 on a bar 76 which is moved to the right to close contacts 92 which operate some device which indicates the position of the type-carriage. To effect a carriage-return movement of the type carriage a carriage-return selector means (Fig. 5, not shown), comprising an electromagnet and an hydraulic valve, is operated which causes letter-space urging motor to stop and the motordriven shaft 45 is coupled to the pulley 40 by operation of the hydraulically operated piston 51.