baber/WOPTO huggingface dataset:
Patent GB-345094-A (GB)
Title: Improvements in, or relating to, photograph and like stands
IPC: A47G1/14
Filed: 1930-03-19
Abstract: 345,094. Picture &c. frames. ELISHA MANDER, Ltd. and MANDER, H. R., 29, Branston Street, Birmingham. March 19, 1930, No. 8751. [Class 11.] In a photograph or like stand, of the type comprising a metal frame with a backing and a hinged supporting strut attached thereto, the frame a is formed with gaps or apertures a<1>, engaged by projections b<1> on the backing b, which extend below the bottom edge of the frame, and serve to maintain the latter out of contact with the supporting surface. The lower edges of the projections b<1> may be covered with velvet &c.
Patent GB-1416801-A (GB)
Title: Actuator of motor vehicle safety device
IPC: B60R21/16
Filed: 1973-02-22
Abstract: 1416801 Crash restraint bags NISSAN MOTOR CO Ltd 22 Feb 1973 [23 Feb 1972] 8782/73 Heading B7B [Also in Division G1] In a safety device for a motor vehicle a protector bag for the rear seat occupants is arranged to be actuated before a protector bag for the front seat occupants. The actuator for the safety device (see Division G1) comprises first and second electrically actuable detonating means, an instant impact responsive collision sensor, a delayed-action impact responsive collision sensor and a D.C. source.
Patent GB-245980-A (GB)
Title: Utensils for moulding sugar sweetmeats commonly called "lollipops"
IPC: A23G3/02
Filed: 1925-04-03
Abstract: 245,980. McAllister, H. April 3, 1925. Casting confectionery. - An apparatus for making " lollipaps " comprises a rubber or other flexible mat a formed with mould apertures b of the desired shape and with slots c for the sticks d. In use. the mat is laid on a slab or plate, sticks are placed in the slots so as to project into the mould apertures, and the latter are filled from a dropper or funnel. After setting, the mat is lifted from the confections.
Patent GB-570244-A (GB)
Title: Hand knitting appliances
IPC: D04B17/00
Filed: 1943-06-03
Abstract: 570,244. Hand knitting- appliances. SEMONSEN, O. C. June 3, 1943, No. 8908. [Class 74 (ii)] A device for hand knitting comprises a member having two rows of pegs or projections 13. 14 around which a course of knitting is laid by means of a hollow guiding member or needle 39. The rows may be straight or may be circular, square or elliptical, and the pegs 13, 14 of the two rows are arranged at different levels so that a space 17 is provided to facilitate passing the yarn around the pegs. The pegs may be bent to prevent the loops slipping off, and may be pointed on the ends so that the yarn can more readily pass over them. Adjustable yarntensioning means, comprising eyes 49 on rings 45, and pins 50 may be provided upon the handle 43 of the needle, or a non-adjustable tensioning member comprising a resilient member partly closing the end of the handle may be provided.
Patent GB-147970-A (GB)
Title: Improved apparatus for heating or cooling rooms
IPC: F24C13/00
Filed: 1919-04-09
Abstract: 147,970. Schoenenberger, G. April 9, 1919. Air, treating. - An apparatus for treating air for ventilation comprises a flat plate heat exchanger 11 through which air is drawn by a fan 19, water being circulated from a boiler 2, forming part of a kitchen stove. A movable grate 3 is adjustable as to height and as to spacing of bars. Cold water can be circulated through the plates 11 in summer time to cool the air. The air may be purified by passing through a chamber haying moist flannel surfaces. In a modification, the heat exchanger is fitted in a cupboard which may have a sink and spaces for storing food or utensils and also may contain a drinking-water reservoir with a filter. More than one air-treating device may be supplied from the boiler.
Patent GB-500769-A (GB)
Title: Improvements in the polymerisation of dienes
IPC: C08F36/04
Filed: 1938-03-24
Abstract: 500,769. Synthetic rubber. I. G. FARBENINDUSTRIE AKT.-GES. March 24, 1938, No. 9049. Convention date, March 25, 1937. [Class 2 (iii)] Polymers of dienes which may be mobile liquids similar to drying oils, rubber-like bodies or solid horny substances are produced by polymerizing dienes in the liquid phase with anhydrous hydrogen halides at temperatures below -20‹ C.; separating from the product those constituents which boil without decomposition under a pressure of 10 mm. by distillation or selective solvents, and subjecting the remainder , to further polymerization. The second polymerization may be effected by heating to 100-200‹ C. and additional hydrogen halide or other halides such as iron, tin or magnesium chloride or oxygen-transferring, agents such as persulphates, perborates or hydrogen peroxide may be added. Organic chlorine compounds such as unsaturated chlorine compounds obtainable from chlorinated paraffins having more than three carbon atoms may also be added to accelerate the second polymerization. In examples: (1) pure butadiene is cooled to -60‹ C. and mixed with liquid anhydrous hydrogen chloride and maintained at that temperature for 4 hours; the low-boiling-point constituents of the product are distilled off at 10 mm. pressure and the remaining rubber-like polymer which is free from chlorine is heated to cause any desired degree of further polymerization ; alternatively the first polymerization product may be isolated by precipitation with methanol at room temperature and is then polymerized further as described above or with the addition of the unsaturated halogen hydrocarbons referred to above ; (2) a mixture of butadiene, butylene, and propylene obtained by splitting hydrogen chloride from dichlorbutane is treated at -60‹ C. with hydrogen chloride as in the first example, followed by distillation under 10 mm. pressure and further heating of the residue as described above, The Specification as open to inspection under Sect. 91 includes the use of gaseous hydrogen halides and is not limited to a process in which there is a second polymerization. An example describes the polymerization of pure liquid isoprene with anhydrous hydrogen bromide at 20‹ C. in a pressure bomb. This subjectmatter does not appear in the Specification as accepted.
Patent GB-693320-A (GB)
Title: Improvements in or relating to castor mountings for vehicles or machines
IPC: B60B33/04
Filed: 1951-04-19
Abstract: 693,320. Vehicle body mountings; adjusting body height; arrangement of wheels and axles. SMITH, T. S. April 19, 1951, No. 9165/51. Class 108 (ii). A castor mounting for vehicles or machines comprises a pair of castors having axially slidable and rotatable spindles which are interconnected in such a manner that the axial displacement of one spindle causes axial displacement of the other spindle in the opposite direction. In the arrangement according to Fig. 1 each of a pair of identical castors comprises a hollow spindle 5 slidably and rotatably mounted in lower and upper bearings 8 and 9 respectively and constitutes a housing for a cylinder 10 and a hollow ram 11. The lower end of the cylinder 10 and the upper end of the ram 11 are closed by ball-shaped members 12 and 14 respectively. The cylinder 10 is filled with oil and the two rams are connected together by a pipe 17 which is preferably flexible. The pipe 17 may be connected to a hydraulic pump (not shown) to permit raising of the adjacent end of the machine. In another arrangement, Fig. 2, each end of a beam 27, pivotally mounted on a chassis cross member 20, engages a collar 30 on an adjacent castor spindle 22 which is slidably and rotatably mounted in bearings 25 and 26. In an arrangement according to Fig. 3 (not shown), the rake of the castor wheel fork is adjustable to obviate the necessity for rotation of the castor spindle when the vehicle is reversed. The fork is pivoted to the base of the castor spindle and its rake adjusted by means of a pair of bolts which are carried in a pair of brackets on the spindle and which engage surfaces on the fork. The invention is applicable to self-propelled, pushed or drawn vehicles such as harvesting machines, of known type such as that disclosed in Specification 633,574, [Group I].
Patent GB-159425-A (GB)
Title: Improvements in and relating to sparking plugs and ignition timing devices for internal combustion engines
IPC: H01T13/24
Filed: 1920-03-30
Abstract: 159,425. Slawter, I. L., and Innes, W. March 30, 1920. Sparking-plugs; timing.- The time of ignition is made dependent on the compression in the cylinder by mounting the central electrode 14 together with its insulation and a conducting-sleeve 16 so as to slide within the casing. Contact is thus made and broken between the sleeve 16 and plate 26 which is insulated from the casing by the washers 23. The motion is limited by the surfaces which form upper and lower valve seats for the flange 17 on the sleeve 16. The device may be used in series with an ordinary sparking-plug.
Patent GB-976107-A (GB)
Title: Improvements in or relating to stabilized transistor oscillators
IPC: H03B5/12
Filed: 1962-03-09
Abstract: 976,107. Transistor oscillating circuits. PHILIP'S ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 9, 1962 [March 13, 1961], No. 9187/62. Heading H3T. In a transistor oscillator circuit the oscillation frequency is stabilized against supply voltage variations by deriving the base bias voltage of the transistor from the supply via a resistive network including a thermistor or a voltage dependent resistor such that the base bias voltage varies in such a manner to counteract any variations of the generated frequency. As shown in the Figure, the local oscillator and mixer stage of a superheterodyne receiver comprises a transistor 3 provided with feedback capacitor 5 and tuned local oscillator circuit 1 and I.F. tuned circuit 2, 4, H.F. signals being applied to the emitter of the transistor via terminal 10. The base bias voltage of the transistor is derived from divider 14, 15, 16 connected in series between the positive and negative terminal of the supply, resistor 16 being a negative temperature coefficient thermistor or a voltage dependent resistor. Thus, when the supply voltage changes the resistance of the divider 14, 15, 16 varies in such a manner that the base bias voltage causes the transistor to counteract any changes in the oscillator frequency. The emitter-collector circuit of the transistor includes an inductor 6 and resistor 7, the latter having a value such that 20% to 40% of the supply voltage drops across it. The resistor 16 may be replaced by a positive temperature coefficient thermistor 16 which is connected in series with resistor 14 or substitutes the latter, the connection being as shown by the broken lines.
Patent GB-1114472-A (GB)
Title: Improvements in or relating to mine roof supports
Inventor: ALLEN ARCHELAIUS DAWSON
IPC: E21D23/04
Filed: 1965-03-04
Abstract: 1,114,472. Mine roof support frames. GULLICK Ltd. 18 Feb., 1966 [4 March, 1965], No. 9196/65. Heading E1E. A mine roof support frame which may be of the advancing type is provided on its base with a cantilever extension 11 carrying a roof support prop 19, the extension 11 defining a gap 18 adapted to accommodate the conveyor if so desired. The cantilever extension 11 may be used in association with numerous types of bores for details of which Figs. 2-7 (not shown), should be referred to, the extension being provided with one or more roof supporting props and a retractable floor engaging prop 30 as necessary.
Patent GB-1077114-A (GB)
Title: Process for the production of 7-amino-3-phenyl-coumarin compounds
Inventor: CARL-WOLFGANG
IPC: C07D311/16
Filed: 1965-03-04
Abstract: 7 - Amino - 3 - phenyl - coumarin compounds are prepared by:  (i) heating a compound of the formula <FORM:1077114/C2/1> in which R is a C1- 5 alkyl radical and Ar1\t is an aromatic radical, with a phenylacetic acid, optionally substituted in the benzene ring, in the presence of a water-removing agent and at least one alkali metal salt of a carboxylic acid, to give a compound of the formula <FORM:1077114/C2/2> wherein Ar2 is an optionally substituted phenyl radical, and  (ii) eliminating the acyl group from this product to give a 7-amino-3-phenyl-coumarin.
Patent GB-206445-A (GB)
Title: Improvements in and relating to fuel economizers and like apparatus for effecting transfer of heat
IPC: F22D1/10
Filed: 1922-08-05
Abstract: 206,445. Robertson, T. E., (Power Specialty Co.). Aug. 5, 1922. Tapered spigot and socket joints. - In heat exchange apparatus, steel tubes 5, encased in cast iron corrugated envelopes 6 and disposed across a passage for one fluid, carry plate like members or discs 7 which fit into corresponding holes in one or both walls 1, 2. Removable headers or connecting bends 8 are pressed at their ends into tapering parts of the tubes by clamps 14 anchored in the discs.
Patent GB-347831-A (GB)
IPC: G10K9/20
Filed: 1930-03-22
Abstract: 347,831. Sound-transmitting devices. ELECTROACUSTIC GES., Werk Ravensberg, Kiel, Germany. March 22, 1930, No. 9282. Convention date, March 26, 1929. [Class 40 (iv).] A sound transmitter for a definite frequency, more particularly an air sound transmitter for use in sound signalling, comprises a diaphragm and a radiator arranged in front thereof in such a manner that an annular radiation opening is formed which runs parallel to the edge of the diaphragm and is vertical to the diaphragm, the passage cross sections of the conduit in the radiator increasing exponentially towards the exterior and the radius of the radiator being equal to a quarter of the wavelength or to an odd multiple of a quarter of the wave length of the operating frequency of the transmitter. The form of transmitter shown in Fig. 3 comprises a casing 1, a diaphragm 2, which carries an armature 4 co-operating with a magnet 3, and a member 6 which forms with the diaphragm 2 an annular radiator 5 having a maximum height at the centre, a minimum towards a centre zone and increasing again towards the circumference. Tubular screening walls 7 of a length approximately equal to the wave length of the transmitter frequency are preferably arranged on both sides of the radiator as shown. Fig. 4 shows a construction of double diaphragm transmitter in which each diaphragm 2 carries an electromagnet 3 and cooperates with an annular radiator 5. The distance apart of the radiating rings 5 is small in comparison with the wave length of the transmitter frequency and for short waves this distance is made equal to one-half the wave length or an odd multiple of one-half the wave length. According to a further modification, a number of the double diaphragm transmitters shown in Fig. 4 are arranged one above the other, the distances between the corresponding radiators of each element being equal to half the wave length of the operating frequency.
Patent GB-1086573-A (GB)
Title: Improvements on core barrel
IPC: E21B25/02
Filed: 1965-03-04
Abstract: 1,086,573. Boring earth &c. E. J. LONGYEAR CO. March 4, 1965 [March 4, 1964], No. 9327/65. Heading E1F. In wire line core barrel apparatus comprising a drill stem 12 carrying a bit 11, and a core receiving tube 15 held in the stem by latches 16, the tube is held spaced from the bit by expandable means 76 housed in a recess 24 in the drill stem. The means 76 comprises a split ring (Fig. 5, not shown) and is retained in the recess by projections 76d on the split ring engaging a ring 77 in the recess. A shoulder 62a on the tube engages the ring 76 to space the tube from the bit, and a shoulder 59 on the tube expands the ring 76 on withdrawal of the tubefrom the stem. The drill stem has a diamond carrying part 19 and hardened lands 22. During drilling the core, the lower part 28 of the tube is stationary, bearings 42, 46 and a grease nipple 41 being provided to reduce friction. Fluid is supplied to the bit along the annulus between the tube and the stem, a by-pass 56, 50, 55 being provided at the recess. When the core fills the tube, washers 45, 48 are expanded to cut-off the fluid, the apparatus is raised slightly to break the core, and the tube is withdrawn by connecting the wire line tool to a spear 72 on the latch release tube 27.
Patent GB-327003-A (GB)
Title: Improvements relating to grinding or abrading machines
IPC: B24B53/04
Filed: 1929-03-22
Abstract: 327,003. Bath, J. March 22, 1929. Trueing rotating tools.-In a grinding machine particularly for grinding a tap A or similar workpiece, the grinding-wheel W is trued by means of a pair of diamond tools 52 which operate alternately at selected rates of speed on opposite sides of the wheel. The work is mounted between a headstock 22 and tailstock 24 and the grinding-wheel spindle 25 is mounted on a carriage 26 which may be fed towards the work by means of a screw 27 working in a fixed nut 28 and operated through gearing, Fig. 12, from a hand wheel 31, a graduated disc 38 being provided to indicate the extent of the feed movement. The dressing mechanism is mounted on a table 40 slidable on a plate 41 adjustably secured to a bar 42 clamped to the wheel carriage. The plate 41 is fed towards the grinding- wheel by means of a feed screw 43 actuated by a ratchet wheel 44 which is rotated by a pawl 45, Fig. 3, mounted on a feed lever 47, rocked by an eccentric 49 on a, hand-operated shaft 50. Preferably the dressing-tools are advanced 1/1000 in. at each rotation of the shaft 50. The diamonds are carried by swivelling heads 53 and are adjustable by screws 54. Cylindrical pins 56 on the heads are clamped in the desired angular position in a slide 57 by means of a plate 58 and screws 59 and the slides 57 move in guides in blocks 60 secured to the table 40. The table 40 and the guide blocks are both recessed to receive a block 66, the recesses in the guide block being at the exact angle corresponding to the desired wheel face, and different wheel profiles being treated by changing the guide blocks. The slides 57 are actuated from adjustable cranks on a pair of gear wheels 70, 71. the cranks being connected to the slides by two part links 72, 74 respectively. A shaft 93 driven from a suitable power source is connected through shaft 92, disengageable worm drive 91, 90 and change speed gearing 81 - - 89 to a shaft 80 driving the wheels 70, 71. The gears are shifted by levers 94, 95. In order to start and stop the trueing operation as required the worm shaft 92 is mounted on a swinging arm 101 actuated by a cam slot 107 in a control lever 108 provided with a latch lever 110. When the latch lever is disengaged from a fixed stud 113, the control lever 108 may be moved downwardly to engage the worm 91 and thus start the reciprocation of the trimming-tools. This mechanism may also be actuated from a lever 120, Fig. 14, acting on the latch and control levers through flexible cords 115, 116. During the reciprocation of the diamond tools the shaft 50 is rotated to feed the diamonds towards the grinding-wheel which may subsequently, by means of the disc 38, be advanced towards the work by the amount required to compensate for the reduction in diameter of the wheel effected by the trimming-tools.
Patent GB-1241794-A (GB)
Title: Improvements in and relating to printing apparatus
Inventor: FARROW HAROLD FREDERICK
IPC: B41F31/08
Filed: 1967-07-21
Abstract: 1,241,794. Printing apparatus. COLORFLO Ltd. 15 July, 1968 [21 July, 1967], No. 9389/71. Divided out of 1,241,793. Heading B6C. [Also in Division F1] The Specification is substantially identical to Specification 1,241,793 but the claims are directed to the feature incorporating a spring loaded device attached to the main piston which responds to ink pressure build-up at the intaglio printing surface and reacts to cut-off the ink supply from the pump.
Patent GB-207778-A (GB)
Title: Process for the production of washable printings on leather
IPC: D06P3/32
Filed: 1923-04-06
Abstract: In producing washable printings on leather, the hide or skin is first tanned with formaldehyde or alum, then with sumach, printed, steamed, fixed with an appropriate mordant and preferably given a velvet, suede or other finish.  In an example the hides or skins, tanned with formaldehyde and then with sumach, are dried at 35 DEG  C. and printed with a mixture of dyestuff, for example Rhodamine, tragacanth, chromium acetate, tannic acid and glycerine, a ground colour being applied before or after the printing.  The goods are steamed at 75 DEG  C. and treated in a bath of tartar emetic or acid according to the dyestuff employed.
Patent GB-808796-A (GB)
Title: Plating surgical needles
IPC: A61B17/00
Filed: 1957-03-22
Abstract: A needled, surgical suture comprises an eyeless needle having a flexible gold plated surface and a flexible surgical suture swaged to the needle, the plated surface being deposited by immersing the needle in an alcoholic solution containing 0.1 g. of gold chloride per 60 to 120 ml. of solution for between 30 and 90 seconds. Suitable alcohols include methanol, ethanol, ethylene glycol, higher polyhydric alcohols or mixtures of alcohols.  Prior to plating, the needles are degreased, and pickled in dilute hydrochloric acid, and after plating, they may be washed in a solution of the sodium salt of ethylenediamine tetra acetic acid to remove any iron from the surface of the needle.
Patent GB-1392926-A (GB)
Title: Measurement of flow in a hydraulic system
IPC: G01F1/64
Filed: 1971-04-15
Abstract: 1392926 Electrode physical measurements GEORGE KENT Ltd 13 April 1972 [15 April 1971] 9550/71 Heading G1N The total volume flow of an electrolyzable liquid along a duct is measured by sensing the passage, between first and second electrode pairs arranged in the duct, of random conductivity disturbances in the flow of the liquid due to varying distribution of gas bubbles between the electrodes of each pair, formed by electrolyzing the liquid, caused by turbulence in the liquid flow; establishing the transit time between the pairs of the electrodes of the disturbances by cross-correlation and deriving the volumetric flow from the transit time and volume of the duct. The pairs of electrodes are inserted in the duct at first and second spaced positions along the duct or alternatively the duct itself may form one of the electrodes of each pair and each pair of electrodes is connected to a respective polarization current source to cause the liquid to electrolyze. Each electrode pair 2 is connected to a respective circuit each as shown in Fig. 4 wherein a transistor 35 acting as a constant current source supplies the polarization current to the respective electrodes 2. The changes in conductivity across the electrode pair due to turbulence and fluid flow are fed via filter 38, 39, 40, 41, 42 to an integrator 43, the filter being such as to eliminate signals during a slow change such as due to change of conductivity of the liquid. The output at 48 of the circuit connected to the upstream pair of electrodes is applied to an adjustable time delay of a cross-correlator and then to one input of a multiplier to the other input of which is fed the conductivity signal from terminal 48 of the downstream electrode circuit. The output of the multiplier is then integrated to give its cross-correlation function and applied to a meter which indicates the transit time.
Patent GB-108157-A (GB)
Title: Gauging Apparatus for Determining the Working Dimensions of Shells taken from the Forge.
IPC: G01F17/00
Filed: 1917-07-03
Abstract: 108,157. Soc. des Automobiles Alda. July 18, 1916, [Convention date]. Indicators actuated by pressure of head of liquid.-In apparatus wherein the internal dimeneions of roughly forged shells having constant external dimensions and shape are deduced from a measurement of the cubic contents below the assumed centre of gravity, effected by introducing into the shell forging a volume of water equal to the volume below the centre of gravity of an average shell and measuring the height to which it rises in the forging, the liquid level gauge comprises a siphon tube of which one end b enters the shell and the other end a terminates in a closed inclined portion c which is graduated to give working dimensions of the shell. Coloured water is used in the tube, which is provided at the top with a. metal extension provided with an opening, in which a glass tube is held in place by a threaded stopper. The tube is maintained in vertical position by clips f, g, taking around a slotted tubular standard h.