baber/WOPTO huggingface dataset:
Patent GB-1179927-A (GB)
Title: Tissue Holder and Knife Guide.
IPC: G01N1/42
Filed: 1967-04-05
Abstract: 1,179,927. Microtomes. TECHNICON CORP. April 5, 1967 [April 7, 1966], No.15502/67. Heading G2J. A microtome specimen stage comprises a cylindrical heat conductive block 20 connected to a heat sink 10 by a thermo electric cooling module 18 to maintain the support surface of block 20 at freezing temperature, the upper surface of the block 20 being adapted to support a specimen, and a tubular element 60 surrounding the block 20 and movable axially thereof, the element 60 having a radially outwardly extending flange 64 which defines a cutting plane 90 for the microtome knife, successive specimen slices being cut with incremental movement of the element 60 relative to the block 20 until the cutting plane 90 is level with the support surface of the block 20. The element 60 is externally screw-threaded and engages with an internally screw-threaded tubular element 50 which is fixed with respect to the block 20. Axial movement of the element 60 is effected by screwing it into or out of the element 50. The incremental movement of the element 60 is determined by the pitch of the screw-threds and by a clip-stop arrangement in which a spring biased plunger 74 housed in the block 20 is adapted to engage either of two vertical grooves 82 provided in the inner wall of the element 60.
Patent GB-1479545-A (GB)
Title: Stator coil assemblies for rotary electric machines
IPC: H02K3/40
Filed: 1975-04-15
Abstract: 1479545 Insulating windings in dynamoelectric machines MITSUBISHI DENKI KK 15 April 1975 [17 April 1974] 15517/75 Heading H2A In a rotary machine wherein a stator winding conductor 1 has an earth electrode 3 mounted, e.g. painted, on an insulator 2 for the conductor, a first layer 4 of material having a non-linear coefficient of resistance with field intensity is coated on to a part of the insulator 2 so as to overlap an end of the earth electrode 3, a shield insulator 5 is formed over the first layer 4 and is arranged to overlap the end of the earth electrode 3, an electrode 6 is provided on the shield insulator 5 and is connected electrically to the earth electrode 3, and a second layer 7 of the non-linear material is coated on a part of the shield insulator 5 and is arranged to overlap one end of the shield electrode 6. The resistance of the non-linear material is that of an insulator at low field intensity and that of a semi-conductor at high field intensity. The length l by which electrode 6 extends from the end of electrode 3 is chosen so that power is dissipated equally in the two layers 4, 7. In Fig. 5 (not shown) the second layer (7) extends further away from the earth electrode (3) than does the first layer (4), and in Fig. 6 (not shown) it is directly coated on the conductor insulator (2). In Fig. 7 (not shown), the second layer (7) is directly joined to the first layer (4) at the end remote from the earth electrode (3).
Patent GB-168972-A (GB)
Title: Improvements in web printing machines
IPC: B41F5/08
Filed: 1920-06-08
Abstract: 168,972. Hoe & Co., Ltd., R., (Hoe & Co., R.). June 8, 1920, Rotary machines.-In web-printing machines comprising a number of printing-couples and inking-mechanism for each couple, the couples are arranged on the outside of the inking-mechanisms in order to leave each couple with a clear side for the introduction of the web. The machine shown consists of a number of compact units each having two couples 4, 5 and 9, 10 which are offset vertically and are arranged on the outside of the inking-mechanisms 7, 12 respectively. The web is led over guides 14, 15, 16 and passes through the couples, from the clear sides, and round the inking-mechanisms. The web is supplied from one of two rolls A' arranged at the bottom of the unit. The webs from all the units may be led over the guides 1 to associating-mechanism 2 and a folder 3.
Patent GB-1513463-A (GB)
Title: Self-contained injection apparatus
IPC: A61M5/42
Filed: 1975-05-09
Abstract: 1513463 Syringes W WAGNER 9 May 1975 15550/75 Addition to 1494646 Heading A5R A syringe comprises a muzzle 1 for placement against the skin and within which a vacuum is generated, for example by spring- loaded piston 12 which is held is displaced position shown by detent means including a latching member 2 on piston rod 24 engaging the edge of an aperture in a stem 13 carrying a plunger 49 which is depressed on contact with the skin to release latching member 2 whereby piston 12 moves back to effect a vacuum in muzzle 1 thereby drawing skin into the muzzle. The vacuum also acts through bore 6 on a piston 112 which is drawn downwardly in its housing 109 thereby releasing a catch 110 to permit a cross head 114 to move downwardly, an anvil 5 on the cross head striking the syringe to effect injection. Cross head 114 strikes piston 112 and moves it into contact with a valve member 119 which moves downwardly permitting air to flow through port 108 upwards alongside member 119 past the upper edge thereof into bore 6 and thence to muzzle 1 to break the vacuum therein.
Patent GB-685996-A (GB)
Title: Improvements in or relating to valve voltmeters
Inventor: RUSSEN ALBERT
IPC: G01R19/04
Filed: 1949-06-10
Abstract: 685,996. Valve voltmeters. STANDARD TELEPHONES & CABLES, Ltd. June 2, 1950 [June 10, 1949], No. 15563/49. Class 37. A voltmeter for the measurement of peak values of a specified polarity of alternating currents or transients comprises a capacitor arranged to be charged by the peak value to be measured, a potential measuring circuit for measuring the full potential to which the capacitor has been charged, and a negative feed-back amplifier for charging the capacitor substantially instantaneously. The voltage e1 to be measured is fed through resistors R13, R1 to the control grid of a pentode amplifier V1 which is biased from a potentiometer R2 forming part of a bleeder resistor chain across a +70 volt stabilized screen supply and earth. A valve V2 is coupled to the valve V1 by means of a 65-volt low current neon valve N1 or by other unidirectional means such as a diode. The neon valve N1 forms part of a potentiometer chain R4, N1, R5 across the +280 volt and - 150 volt supplies. The measuring capacitor C1 is connected in the cathode circuit of the charging valve V2, a resistance R7 and switch S1a being provided for discharging the capacitor after each measurement. The cathode of V2 is connected through a resistor R11 to the control grid of a pentode V3 arranged as a cathode follower, the load resistor R8 being connected to the - 150 volt supply. Overall negative feed-back is applied from the cathode of V3 over a resistor R14 to the valve V1. A backing-off network R9, R10 is provided for the meter M, zero adjustment for which is effected by adjustment of the resistance R10. The circuit described is for use with negative-going signals. If positive-going signals are to be measured an input cathodefollower valve is cathode-coupled to the valve V1. Specification 481,518 is referred to.
Patent GB-1029977-A (GB)
Title: Improvements in or relating to mooring buoys for ships
IPC: B63B22/02
Filed: 1965-04-13
Abstract: 1,029,977. Mooring buoys. NORTH BRITISH ELECTRIC WELDING CO. Ltd., and K. L. WRIGHT. April 13, 1965, No. 15607/65. Addition to 884,496. Heading B7A. A mooring buoy as claimed in Claim 7 of Specification 884,496 has the upper part of the buoy bar device provided at its upper end with a releasably connected link for attachment of a ship's line.
Patent GB-732684-A (GB)
Title: Improvements relating to container closure plugs and closure combinations
IPC: B65D39/08
Filed: 1952-06-23
Abstract: 732,684. Container closures. AMERICAN FLANGE & MANUFACTURING CO., Inc. June 23, 1952 [June 22, 1951], No. 15749/52. Class 125 (3). A screw plug closure 9 for metal drums &c. is of polyethylene and has a screw-threaded side wall 11 with a gasket part 14 and a base 10 intermediate the ends and adjacent said gasket part to strengthen the side wall at that position. The plug fits into a bush 4 in the container neck 2 and is covered by a cap-seal 19 having a gasket 28 and crimped over the bead 4a of the bush. In a modification the plug has upstanding lugs for engagement by a wrench instead of the plug being hollow-headed.
Patent GB-560273-A (GB)
Title: Improvements in or relating to water lubricated roll neck bearings for rolling mills
IPC: B21B31/07
Filed: 1942-11-09
Abstract: 560,273. Bearings. DAVY & UNITED ENGINEERING CO., Ltd., WATKINS, V., and MAYNE, J. S. Nov. 9, 1942, Nos. 15808 and 17882. [Class 12 (i)] [Also in Group XXVI] In a roll or shaft bearing escape of lubricant or coolant and ingress of grit &c. is prevented by a ring 34 pressed against a shoulder on the roll or shaft at one side of the bearing and at the other side by a slip ring 46 pressed axially against a ring 45 carried by the cover-plate 42. Rubber or steel springs 35, 48a provide the axial pressure and may be assisted by the liquid pressure in the bearing. The slip ring carries a shaft seal 49 and has a running clearance with the shaft. It may be of anti-friction metal or of steel with a white metal lining. In the case of water lubricated moulded fabric bearings, the rings 34, 48 and 45 and springs 35, 48a may be of hard rubber or synthetic rubber or of moulded fabric. Where grease lubricant is used, the rings are of phosphor bronze or gun metal and springs of hard rubber or steel. The bearings may be axially divided to facilitate assembly over the roller ends, the various packing rings and springs and slip ring being then formed in halves. The bearing at the opposite end of a roll is closed by a flat or domed plate. Specification 560,274 is referred to.
Patent GB-565206-A (GB)
Title: Improved apparatus for transmitting pictures between spaced points
IPC: H04N1/024
Filed: 1941-12-08
Abstract: 565,206. Facsimile telegraphy; modulating light. THOMPSON, L. A. Dec. 8, 1941, No. 15814. [Class 40 (iii)] In an' apparatus for facsimile transmission of pictures and the like, the picture is scanned by a light spot of varying intensity and constant area derived from a light beam which is deflected by a beam swinging device to vary the obturation of the beam, these variations being converted into variations of intensity by masking means and focusing means associated with the beam swinging device and disposed in the path of the deflected beam. As shown in Fig. 2, the apparatus on the left is set to act as a transmitter and the apparatus on the right to act as a receiver. In the transmitter, light from a lamp 1 passes through only one of two apertures 4, the other being covered by a shutter 5. The light is converged by lenses 2, 8, 9 on to a mirror 10 oscillated about its pivot 12 at 1800 cycles per second by an electromagnet 13 supplied with oscillating current from an oscillator 15. The light reflected from the mirror 10 passes through lens 9, an aperture 17 in a mask 16, an aperture 19 in a spot-forming mask 18, and lenses 20; which converge the light to a scanning spot 22 on the picture on a usual rotating drum 23. The drum or the optical system is moved by a screw in the usual way to cause the scanning spot to move in a helix round the drum in the usual way. The light reflected and modulated in intensity by the picture drum strikes a photo-electric cell 15, which has a central hole for the passage of the light beam from the mirror. This photocell is connected to an amplifier 26, from which the signals are transmitted by any suitable channel to the amplifier 26 of the receiver, which is connected to an oscillograph 13. In the receiver, both apertures 4 are operative and the photo-electric cell is switched off. A change-over device (not shown) is provided to set the apparatus for receiving or transmitting as desired. The optical system is such that each aperture 4 is focused on the mask 18, the aperture 17 of the plate 16 is focused on the surface of the picture on the drum 23, the image of an aperture 4 lies to one side of the aperture 19 in the mask 18 when the mirror is in the central position, and the image of the other aperture 4 is at the same time on the other side. The result of this optical arrangement in the transmitter is that pulses of light at 1800 cycles per second are thrown on the picture drum, the pulses growing in intensity and then falling off while the drum is rotating as represented by the stages a, b, c, Fig. 3, between dark periods d. In the receiver, however, both apertures 4 being open, the illuminating pulses produced by one aperture occur between the pulses produced by the other aperture with the result that the sensitive paper on the drum is subjected to pulses at twice the frequency, namely, 3600 cycles per second, thereby improving the quality of the copy.
Patent GB-529980-A (GB)
Title: Improvements in and relating to loop equipped radio receivers
IPC: H03H2/00
Filed: 1939-05-30
Abstract: 529,980. Superheterodyne circuits for wireless reception. THORNTON. A. A. (Philco Radio & Television Corporation). May 30, 1939, No. 15883. [Class 40 (v)] In a superheterodyne receiver of the kind comprising a loop antenna 1, a frequency converter VI, an intermediate frequency coupling network 4, 5 and an intermediate frequency amplifier V2, regenerative feed back at carrier frequency is supplied by coil 10 and lead 12 to increase the efficiency of the loop antenna 1. The feed back coil 10 is coupled to the coils 4 and 5 but more closely to 5, and the maximum regenerative feed back occurs in the low frequency end of the tuning range where the efficiency of the antenna is normally least. This gives a more uniform selectivity over the tuning range. A certain amount of intermediate frequency feed back also takes place over lead 12 which also serves as an A.V.C. line for valve V1.
Patent GB-168993-A (GB)
Title: Improvements in or relating to taps or the like for tapping tapered holes
IPC: B23G5/14
Filed: 1920-06-11
Abstract: 168,993. Vulcan Foundry, Ltd., and Richards, R. P. June 11, 1920. Taps.-The chasers &c. C of a tap for taperthreading are mounted in a sleeve A and engage a tapered mandrel B bolted to a sleeve e which is axially located with respect to the work by a nut e<2>. The mandrel &c. are maintained at right angles to the work by the feet f<4> of a pedestal F against which the nut e<2> is pressed by the action of the spring I, a ball thrust bearing f<3> being provided. The latter is dust-protected by a flanged retaining-ring H. The chasers C are retained by helical springs under plates c<2> screwed to the sleeve A which is rotated by a spanner &c. at a<2>, axial slots a<1> being provided for the passage of the bolt D. A modification is described to adapt the apparatus to commence the cutting operation at the small diameter of the hole.
Patent GB-744077-A (GB)
Title: Improvements in or relating to a process for the utilization of acetylene and ethylene mixtures
IPC: C07C7/17
Filed: 1953-06-10
Abstract: A mixture of acetylene and ethylene is reacted with acetic acid at elevated temperature in the vapour phase and in the presence of a catalyst promoting addition of acetic acid to acetylene to form vinyl acetate, vinyl acetate is recovered from the product, and a residual gas enriched in ethylene is separated. Suitable catalysts are Zn, Cd or Ag salts, e.g. acetates, or oxides, supported on carriers such as active carbon or alumina. They may be promoted by phosphoric acid. Temperature may be 175-225 DEG  C. and reaction time 5-60 secs.  The molar ratio of acetylene to acetic acid is from 1:1 to 4:1.  The residual gas may be reacted under conditions selective for ethylene conversion. The conversions may be controlled to give a gas suitable for recycle to the acetic acid reaction zone as in Specification 744,079.  The initial mixture may be obtained by cracking saturated hydrocarbons, preferably an ethane fraction, at 1100-1600 DEG  C., and separating a fraction containing acetylene and ethylene, preferably in equimolar proportions.  The second stage of ethylene conversion may consist of conversion to chlorhydrin as in Specification 744,076; chlorination to ethylene dichloride as in Specification 744,080; hydrochlorination to ethyl chloride as in Specification 744,078; or conversion to styrene as in Specification 744,079.  In examples, mixtures of acetylene and ethylene are passed through heated acetic acid and then over active carbon impregnated with zinc acetate maintained at about 210 DEG  C., with contact times of 27 and 21 seconds.  Vinyl acetate and acetic acid are removed by refrigeration.
Patent GB-1073744-A (GB)
Title: Improvements in collapsible barrows
Inventor: RESSLER LLOYD
IPC: B62B1/20
Filed: 1963-04-23
Abstract: 1,073,744. Collapsible hand trucks. BRITISH ANZANI ENGINEERING CO. Ltd. April 22, 1964 [April 23, 1963], No. 15978/63. Heading B7B. A collapsible hand truck has a rectangular base 10 which at its end edges is provided with tongues 21 passing through slots 31 in the end walls 29 and around the rolled lower edge thereof to form hinges. The side edges of the base are provided with flanges 17 carrying similar tongues 20 for hinge connection of the side walls 23 so that when collapsed the walls 23 may overlie the walls 29 over the base 10. Flanges 26 on the side walls 23 limit the outward pivoting of the end walls and releasable fastenings 32 retain the structure erected.
Patent GB-1456315-A (GB)
Title: Synchronous induction motor
IPC: H02K17/10
Filed: 1974-04-10
Abstract: 1456315 Electric motors DUAL Gebr STEIDINGER 10 April 1974 [13 April 1973] 16052/74 Heading H2A A synchronous induction motor comprises a rotor having an induction part and a permanent magnet part 6 co-operating with respective stator parts having n and 2n poles, the no-load speed of the induction part being twice the synchronous speed of the permanent magnet rotor part 6 and the induction torque at the synchronous speed of the p.m. 6 being less than the pullout torque of the p.m. The single phase shadedpole motor shown is suitable for driving a gramophone, the motor delivering a lower torque at the synchronous speed of the p.m. rotor part 6 while playing a record and delivering a higher torque at the higher speed of the induction rotor part while operating a mechanism such as a record changer. The induction stator part has four poles and the rated speed of the induction rotor part is about 1400 r.p.m. The pole shoes 10-13 and further shoes 8, 9 associated with the remaining stator poles, are formed of sheet metal secured to the laminated stator core. The pole shoes form, in effect, an eight pole stator interacting with p.m. rotor part 6 which also has eight poles and therefore has a synchronous speed of 750 r.p.m.
Patent GB-272938-A (GB)
Title: Improvements in or relating to arc welding apparatus
IPC: B23K9/073
Filed: 1927-06-16
Abstract: 272,938. Sarazin, R. June 16, 1926, [Convention date]. Regulation, automatic. - In an arc welding machine wherein the electrode feed rollers 2 are intermittently coupled to a motor 4 running at a constant speed, the coupling comprises a reduction gearing including a ratchet wheel 7 and pawl 6, the pawl being controlled by a relay connected across the are. The contact 11 of the relay controls an electro-magnet 12 which operates the pawl 6, and a second contact 9 controls the motor 4. A hand operated switch 13, which short circuits the contact 9, or a time lag relay, is provided for restarting the motor when the arc is accidentally broken and for initial starting. The apparatus feeds but does not retract the electrode and the arc may be struck by means of the vibrating device described in Specification 272,553, [Class 39 (iii), Heating by electricity].
Patent GB-496762-A (GB)
Title: Improvements in or relating to the manufacture of ceramic electrically insulating bodies
Filed: 1937-06-10
Abstract: An electrically-insulating body is made by burning a mixture of a major proportion by weight of alumina and a minor proportion of a binder consisting of talc and silica.  Proportions specified are 90 : 6 : 4 and 88-92 : 4-8 : 2-6 respectively.  The burnt mass may contain 88,2 to 92,2 per cent of alumina, 5,8 to 9,8 of silica and 1,3 to 2,6 of magnesia.  To obtain a porous body, the ingredients, finely comminuted, are mixed with carbon tetrachloride and medicinal paraffin, ground in a ball mill, heated to remove the tetrachloride, screened, pressed in moulds, fired at increasing temperatures to remove the paraffin, the last firing being at 1100 DEG  C., cooled, and finally fired in a hydrogen atmosphere at 1570 DEG  C.
Patent GB-1456601-A (GB)
Title: Variable size orifice valve plates
IPC: F16K3/08
Filed: 1974-04-11
Abstract: 1456601 Valves LENINGRAD TEKHNOL INST IM LENSOVETA 11 April 1974 16091/74 Heading F2V A method of effecting mass-exchange between two phases comprises moving the two phases in opposite directions through a pair of discs 1. The discs are angularly adjustable relative to one another and are each formed with a slot 3 in the form of an Archimedian spiral. Angular adjustment of the discs, as by gearing 7, 8, varies the degree of overlap between the slots and thereby the width of the flow path through the slots. Reinforcing elements 4, 5 are provided.
Patent GB-961092-A (GB)
Title: A process for increasing the useful yield of plants
Inventor: BARNSLEY GEOFFREY EDWIN
IPC: A23B7/144
Filed: 1962-04-27
Abstract: Growing plants are sprayed with a solution of an anti-senescence hormone, e.g. benzimidazole, kinetin, or N6-benzyladenine to increase the yield.  The solvent may be water, aqueous sodium hydroxide, or propylene glycol.  The plants may be wheat, barley, sugar beet, or potato.  0.1-32 oz./acre of hormone may be applied.  Specification 854,560 is referred to.
Patent GB-1532716-A (GB)
Title: Process for the preservation of wood and wood products
IPC: B27K3/34
Filed: 1976-04-21
Abstract: 1532716 Preservation of wood M & T INTERNATIONAL BV 21 April 1976 [25 April 1975] 16204/76 Heading A5E A process for the preservation of wood or wood products comprises treating the wood or wood product with an organotin compound in solution in an organic solvent the tin compound having the formula (R 3 Sn) a H b X, wherein R represents an alkyl group containing from 1 to 10 carbon atoms, a cyclohexyl group or a phenyl group and X represents an anion derived from an oxy-acid of sulphur or phosphorus, a is an integer and b is zero or an integer such that (a+b) equals the valence of the anion X, the treatment being carried out in such a way as to provide a content of at least 0, 4 kg of organotin compound per m<SP>3</SP> of treated wood or wood product, said solution containing no pentachlorophenol. Typical tin compounds used are bis (tri-n-butyltin) sulphate and tris (tri-nbutyltin) phosphate.