baber/WOPTO huggingface dataset:
Patent GB-170195-A (GB)
Title: Improvements in rotary lithographic printing machines for direct or offset printing
IPC: B41F11/00
Filed: 1920-10-07
Abstract: 170,195. Linotype & Machinery, Ltd., and Stern, C. L. Oct. 7, 1920. Rotary machines; offset machines. - A rotary lithographic printing-machine which can be used for printing (a) single side direct, (b) single side offset, (c) perfector offset, oi (d) two colour offset, is constructed with two printing-cylinders 1, 2, and an impression cylinder 3 of half the diameter of the cylinder 1, 2, the cylinder 1 being fitted with an offset surface 5, and with a plate surface or offset surface 4, and with inking and damping mechanisms 9, 8 for the surface 4 when a printing-plate is employed on 4. The cylinder 2 may have two printing-plates 6, 7 fitted, and is provided with damping-mechanisms 10, 12, and inking-mechanisms 11, 13 for printing different colours, the damping-mechanisms being arranged adjacent to each other as shown or, if desired, the damping-mechanism 12 may be between the inking-mechanisms 11, 13, or only one damping-mechanism may be employed. For printing in the manner (a) referred to above, a. printing-plate 4 is fitted to the cylinder 1 and sheets are fed to cylinder 3 at every alternate revolution, the mechanisms not required being rendered in-operative in known manner. For manner (b), an offset impression from plate 7 is transferred to the offset surface 5 which prints a sheet carried by cylinder 3. For manner (c), a printing-plate is fitted to the surface 4 and prints on an offset surface on cylinder 3, which then prints on the underside of a sheet while the surface 5 prints an offset impression from the plate 7 on the outside of the sheet. For manner (d), the grippers on the cylinder 3 are arranged to carry the sheet for two revolutions, at each of which an offset impression from the plates 6, 7 is printed by the offset surfaces 4 5.
Patent GB-1294018-A (GB)
Title: Electric starters for internal combustion engines
IPC: F02N15/06
Filed: 1970-06-12
Abstract: 1294018 Engine turning gear DUCELLIER ET CIE 12 June 1970 [24 June 1969] 28538/70 Heading F1K An electric starter for an internal-combustion engine comprises a starting mechanism with a pinion 1 which is axially displaceable in relation to a starter motor shaft and which is connected through the intermediary of a free wheel 3 to a hollow shaft or sleeve which can screw along helical grooves formed in the starter motor shaft. There is provided in combination means 8, 9 for effecting positive locking, in the stationary position, of the starting mechanism in relation to the starter motor casing and a friction device 19a, 7a which acts on the hollow shaft or sleeve of the starting mechanism to retard the rotation of the latter during its return to the stationary position after starting of the engine. As shown the locking means is constituted by an annulus 6 which comprises a ring of teeth 8 which engage with teeth 9 on a ring 10. The annulus is held in the locking position by a lever 12.
Patent GB-1461665-A (GB)
Title: Method of cross-linking polyethylene
IPC: C08J9/00
Filed: 1974-06-27
Abstract: 1461665 Cross-linked polyethylene and foams thereof DOW CHEMICAL CO 27 June 1974 28571/74 Headings C3P and C3C Polyethylene is cross-linked by treating a mixture of polyethylene and a cross-link promoter selected from trimethylolpropanetriacrylate, trimethylolpropanetrimethacrylate, pentaerythritol tetracrylate and pentaerythritoltetramethacrylate with high energy radiation until a dose of 0À1-1 megarad has been absorbed. The promoter is present preferably in an amount 0À1-10% by weight of the mixture and the ionization radiation may be electrons, protons, neutrons, deuterons, γ-rays, X-rays, alpha particles and #-particles from an atomic pile, a resonant transformer accelerator, a Van de Graaff electron generator, a Linac electron accelerator, a betatron, a synchrotron or a cyclotron. Foamed cross-linked polyethylene is produced by including a foaming agent (preferably between 0À1-20% based on the total weight of the mixture) and the polymer is cross-linked prior to foaming. The foaming agent may be a volatile liquid (dichlorodifluoromethane, dichlorotetrafluoroethane, monochlorodifluoromethane, perfluorocyclobutane) or a heatdecomposable compound (azodicarbonamide, ammonium carbonate, azobis(isobutyronitrile),  hydrazodicarbonamide). The cellular product may be in the form of a film, sheet, fibre, tube or wire-coating. The example describes the formation of a cross-linked polyethylene foamed sheet from a mixture of low density polyethylene, and, based on the weight of the polymer, 15% azodicarbonamide, 5% zinc oxide (to lower the decomposition of the foaming agent), and 0À5% trimethylolpropane triacrylate. The polyethylene was cross-linked by treatment with ionizing radiation and then foamed in a bath of silicon oil after determination of the gel content of the cross-linked polymer. Table I gives the foam volumes of products treated with 0À1, 0À25, 0À5 and 1 megarad and, comparatively, with 0, 2 and 3 megarad.
Patent GB-408957-A (GB)
Title: Improvements in hand braces
IPC: B25G1/00
Filed: 1932-10-14
Abstract: 408,957. Wrenches; screw-drivers. PENNANT MANUFACTURING CO., Ltd., 350, Reddings Lane, Sparkhill, and TRYHORN, W., 487, Fox Hollies Road, Hall Green, both in Birmingham. Oct. 14, 1932, No. 28731. [Class 61 (iii).] A hollow handle for a hand brace is constructed of metal continuous in the direction of the axis of the handle and its ends are closed in or contracted to engage with integral shoulder or abutment means on the rod forming the main element of the brace to prevent axial displacement of the handle. The handle is formed by bending a flat metal blank until its longitudinal edges abut and then contracting its ends by partspherical dies. A rectangular sheet of metal is bent to cylindrical form and its ends 10 are contracted on to either a mandrel or the rod 5 which, in the latter instance, is cranked after the operating handle 8 has been placed in position and secured by spinning out of the rod flanges which engage the ends of the handle. A similar flange or projections struck out of the rod engage the lower end of a steadying handle 7, the upper end of which rests on a shoulder on the rod. Above the steadying handle the rod is flattened to form a screwdriver 14 which may be protected by a cap 17.
Patent GB-533271-A (GB)
Title: Improvements in airscrew spinners
IPC: B64C11/14
Filed: 1939-10-26
Abstract: 533,271. Airscrew spinners. METCALFE, L. E. Oct. 26, 1939, No. 28733. [Class 114] In an air-screw spinner the back plate attached to the hub is made in two parts, the inner section comprising channelled plates 16, 17 which enclose the inner portion of the outer section 20. Vibration is damped by rubber sleeves 21 threaded on through-bolts connecting the sections of the back plate, the sleeves being enclosed in housings 23. The spinner is detachably secured to the back plate by spring-pressed locking pins 36 mounted in housings 33 in the rim of the spinner. The front plate of the spinner is also made in two sections 12, 14 with an interposed rubber ring 13. Specification 498,157 is referred to.
Patent GB-1427328-A (GB)
Title: Fuel control systems for combustion engines particularly gas  turbine engines
Filed: 1972-06-20
Abstract: 1427328 Gas turbine engine fuel systems LUCAS INDUSTRIES Ltd 27 June 1973 [20 June 1972] 28833/72 Heading F1G A fuel control system for a combustion engine, particularly a gas turbine engine, comprises an epicyclic gear arrangement 13 including a member (a planet gear carrier 12) driven, in use, at a speed proportional to the engine speed N, an output member (a sun gear 14) drivingly connected to a centrifugal fuel pump 16; and a reaction member (an annulus gear 17), a variable delivery hydraulic pump 19 drivingly connected to the reaction member, means responsive to the speed of the output member for varying the delivery of the hydraulic pump, a variable-area nozzle 30 through which fluid from the hydraulic pump is directed on to a pelton wheel 32 so as to assist rotation of the output member, and means 31 for varying the nozzle area in accordance with engine operating variables. The means 31 is movable in response to electrical signals from a control unit 36 which is responsive to engine speed N, fuel flow Q, the setting # of the engine control lever 37 and also to other engine variables such as compressor inlet and delivery pressures P 1 , P 2  and compressor inlet temperature T 1 . If the engine speed increases, for example thereby producing an initial increase in the speed of the fuel pump 16, the resultant increase in the fuel flow Q causes, via control unit 36, a reduction in the area of nozzle 30, thereby reducing the driving effect of the pelton wheel 32 and so tending to restrict further increase of the fuel pump speed. The reduction in the area of the nozzle 30 causes an increase in the pressure upstream of the nozzle and acting on a valve 23 in opposition to the force produced by a governor 22, whereby a port 26 is opened to apply pressure to a piston and cylinder unit 27 to tilt a swash-plate 29 to reduce the stroke of pump 19, whereby the pressure falls until the valve 23 regains an equilibrium position in which the port 26 is closed. The pressure fall further reduces the driving effect of the pelton wheel 32 whereby the speed of pump 16 and hence the fuel flow falls, causing a decrease in engine speed and a consequential increase in the area of the nozzle 30 until the engine speed stabilizes at the desired value. A centrifugal pump 33 scavenges liquid from the inside of housing 10.
Patent GB-662412-A (GB)
Title: Towed target aircraft
IPC: F41J9/10
Filed: 1949-11-10
Abstract: 662,412. Towed target aircraft. SVENSK FLYGTJANST AKTIEBOLAG and BULOW, K. O. Nov. 10, 1949 [Nov. 10,1948], No. 28851/49. Class 4. A towed target aircraft is characterised in that it comprises two parallel fuselages interconnected by a wing and a tail plane, the fuselages and the wing consisting of a shell of plywood supported by a skeleton wooden structure. The aircraft comprises two fuselages 1, each of triangular cross section and consisting of a plywood shell attached to a skeleton structure formed of two upper longerons 3 and a lower metal shod keel member 2 interconnected by longitudinally spaced formers 4a-e. The wing, which is of symmetrical aerofoil cross section, comprises a centre section 6 and two outer sections 5 and has a skeleton structure consisting of a spar 9, a leading edge member 7, a trailing edge member 8 and ribs 10 to which is attached a plywood covering. The outer spars are connected to the centre section spar by hinges 11 and locking devices (not shown) to enable the outer wings to be folded upwardly for stowage purposes. The wing is attached to the fuselage by two U-bolts 15 which clamp the centre-section spar to the fuselage former 4d. The tail plane 12 and fins 13 are attached to the fuselage in a similar manner. A ballast compartment 16 is formed in the nose of each fuselage and towing connections 17 are fitted. Streamlined bodies 18 are attached to the wing tips to enable an air gunner to determine readily the outer extremities of the wing. Specification 567,887 is referred to.
Patent GB-924265-A (GB)
Title: Improvements relating to collapsible containers such as baskets
IPC: B65D6/18
Filed: 1959-08-24
Abstract: 924,265. Collapsible containers. A. E. AIANO, and I. AIANO. Aug. 24, 1960 [Aug. 24, 1959], No. 28889/59. Class 18. An open-topped collapsible container comprises a bottom 1, side walls 2, 3, end walls 4, 5 and pivoted-handles 14, 15, each side wall being hinged to its adjacent end walls, and the bottom wall 1 hinged to the side wall 3, wall 2 being provided with supports 12 for the edge of the bottom wall. To collapse the container the handles 14, 15 are folded within the container and the bottom wall 1 folded against wall 3 and the whole container then being collapsed flat (see Fig. 3, not shown). The walls may be constructed of wire mesh or plastic. In a modification a single pivoted handle is provided, attached to edges 16 of the walls 2 and 3. The walls of the container may be trapezoidal in shape.
Patent GB-948119-A (GB)
Title: Pneumatic hammer rock drill
Inventor: MORRISON WILLIAM ANDREW
IPC: E21B4/14
Filed: 1962-07-27
Abstract: 948,119. Percussive drills. INGERSOLLRAND CO. July 27, 1962, No. 28912/62. Heading B4C. A pneumatic hammer rock drill comprises a cylinder 20, a reciprocating hammer piston 12, having an axial passage 52, a hollow drill 14 extending into the cylinder, valve means 16 to admit compressed air to the cylinder to actuate the piston, and means to conduct exhaust air from the cylinder to the interior of the drill comprising a tube 54 held in sealing relation with the drill and piston during a part of the reciprocating stroke of the piston. The tube 54, which may be of nylon, is formed with a flange 56 which is sprung into a groove 58 in the drill bit so as to retain the tube therein. The cylinder 20 is in the form of a liner mounted within an outer housing 18, an annular space being formed between the two in order to conduct air to the lower end of the piston. In operation, compressed air is fed through the valve 16 via a passage 30 to act on the piston, the latter moving so that the air in front of the piston is forced through the tube 54 and so to the hollow drill. Towards the end of the stroke the passage 52 engages the tube 54 and the passage, at its other end, slides off a plunger 50, motive air left in the cylinder then passing through the passage to the drill bit. On the reverse stroke, when air is fed via port 32, the annular space, and ports 34, to the opposite end of the piston, the latter is lifted, and when the passage 52 is clear of the tube, the remaining motive air is fed to the drill bit. The drill bit is given a twisting movement during reciprocating thereof by means of flutes 72. In the modification shown in Fig. 3, the end of the drill bit is made in two pieces 14<SP>1</SP>, 80 screwed together, the tube 54<SP>1</SP> having a flange 84 which is clamped between the two pieces and a sealing ring 88.
Patent GB-1120147-A (GB)
Title: A method of preparing polymers by means of anionic initiators
Inventor: LIM DRAHOSLAV
IPC: C08F4/06
Filed: 1966-06-28
Abstract: Ethylenically unsaturated monomers are polymerized with an anionic initiator by adding the initiator portionwise to a stirred polymerizing mixture throughout the course of reaction and effecting the additions only when the temperature of the reactants falls below that temperature at which the effectiveness of the initiator is decreased to one half in 15 minutes or less under the conditions of the reaction. The reaction may be carried out in bulk or in a diluent, and may be terminated at any desired degree of conversion. Exemplified initiators are tert.-butyl lithium, potassium tert.-butyl alcoholate, lithium tert.-butyl alcoholate, sodium tert.-butyl alcoholate, and triphenylmethyl sodium.  Exemplified monomers are methyl methacrylate, butyl methacrylate, methyl acrylate, butyl acrylate and acrylonitrile. The Specification includes a drawing of a suitable reactor.
Patent GB-279901-A (GB)
Title: Improvements relating to vapour condensers
IPC: F28B9/10
Filed: 1927-10-31
Abstract: 279,901. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Hodgkinson, F.). Oct. 30, 1926, [Convention date]. Surface condensers. - Air and gases are removed from the condensate collecting within a con. denser by collecting the condensate in a water seal divided into inlet and outlet zones and subjecting the condensate in the outlet zone to a pressure communicated from the interior of the condenser and lower than the vapour pressure corresponding to its temperature, the gases and vapours thereby separated from the condensate being subsequently cooled within the condenser. A condenser of the .radial flow type consisting of a shell 10 closed by headers 14, 15 is formed with a condensate hot well 30, Fig. 3, having partitions 31 which divides the condensate surface into zones 33, 34. The outlet zone 34 is connected by a conduit 36 to the central portion of the condenser where the pressure is lower than that corresponding to the inlet zone which is in communication through holes 35 with the centre portion of the condenser. The conduit 36 is screened from condensate by longitudinal partitions 18 covered by a deflector 21. The corresponding division of the condenser is obtained by a circular partition 23, Fig. 2, in the header 14 having parallel extensions 24 dividing the cooling tubes into a first pass portion 26 ,and a second pass portion 27, the conduit 36 and partitions 18 being in the first pass portion. Undissolved air is removed through outlets 41 while condensate forming between the plates 18 is removed through a pipe 38 to the bottom of the well 30. Pressure variations are obtained by altering the length or bore of the conduit 36 by providing it with a valve, or by mounting it adjustably in the shell so that it can be moved up or down by rack and pinion gearing. In a modification, Fig. 5, the air off-take pipe 44 is disposed centrally in the first pass portion 26. The plates 18 may themselves form the gas conduit. In the Specification as open to inspection under Sect. 91 (3) (a) the invention is applied tn a down flow condenser, Fig. 8 (Cancelled), having a gas off-take 56 communicating with a space 57 between the shell and a plate 58, the condensate outlet zone 62 being then connected by a conduit 64 to the off-take 56 leading to an ejector 65. This subject-matter does not appear in the Specification as accepted.
Patent GB-762585-A (GB)
Title: Compositions for preventing damage to hides of cattle infested by warble fly larvae
Inventor: DAWSON RICHARD BOLDEN
IPC: A61K31/54
Filed: 1953-10-21
Abstract: A composition for killing warble fly larvae by oral administration to infested animals, comprises an organo-tin compound, viz. a saturated or unsaturated aliphatic carboxylic or dicarboxylic acid salt of a dialkyltin, e.g. di-n-butyltin dilaurate, together with phenothiazine and hexachloro-ethane preferably in the proportions of 1:20:10 by weight.  An inert suspending and/or wetting agent, e.g. bentonite and an excipient, e.g. lactose may also be incorporated.
Patent GB-703849-A (GB)
Title: Improvements in or relating to lathes and the like
IPC: B27C7/00
Filed: 1950-11-29
Abstract: 703,849. Wood-turning lathes. TYSON, B., [trading as TYSON'S WOODWORKING ENGINEERS]. Nov. 28, 1951 [Nov. 29, 1950], No. 29154/50. Class 83 (3). [Also in Group XXIII] A centre lathe or like machine comprises means for temporarily supporting work 23 between. centres 14, 15, means 53 for periodic relative movement of the centres axially to grip the work, automatic means for subsequently moving the centres to a working position, means 51, 68 for automatically disengaging the centres from the work on the return movement and means for automatically engaging one of the centres with a continuously rotating shaft 28. In a wood-working lathe, the headstock 10 and axially adjustable tailstock 11 are mounted on a channel member 12. The member 12 is supported on arms 16 and is oscillated, (or reciprocated), by a lever 77, shaft 18 and linkage 19, 20, to-and-from a rotary tool-holding cylinder 24. The tools may present a straight or a profiled edge. The headstock spindle 14 is rotated by a worm 27 mounted on the shaft 28 pivotally mounted to driving gear at its lower end. The upper end of the shaft 28 is pivotally mounted on a member 32 which carries a track 33 engaged by a roller 34 and also carries an arm bearing a roller 40 engageable in one or more slots in a disc 42. The roller 34 is mounted on an arm 36 pivoted to the bed at 37 and urged downwardly by a spring 39. As the member 12 is oscillated to-and-from working position, the worm 27 is moved into, and out of, engagement with a wormwheel 26 on the headstock spindle and the roller 40 stops the spindle in a predetermined angular position. The tailstock centre support 45 is advanced by the quick-pitch thread 53 rotated by bell-crank arms 58, 59, the former arm being connected to a rod 60 pivoted in the machine bed and the latter arm to a weighted rod 65. The centre 15, itself, is advanced within the sleeve 45 by a spring 49, the centre being retained in its rearward position during loading by a catch 52. The catch is released by a cam 68 which is moved into the path of the catch by means including a cable 78 and levers 80, 77. The latter levers are held together by a spring 83, the lever 80 is fast with the shaft 18 and the lever 77 is loosely mounted on the lever 80. The lever 77 is moved anti-clockwise to feed the member 12. On the return movement, the member 12 is stopped by a screw 22 and continued movement of the lever 77 causes the cam- 68 on the shaft 69 to trip the catch 52. In operation, workpieces are fed automatically or by hand to a table 21 secured to the lathe-bed 13. A workpiece is secured between the centres as the cam 68 releases the centre 15 and the member 12 is then moved towards the tool or tools. During such movement the thread 53 is rotated to clamp the work securely and to cause the catch 52 to be re-engaged. In a modification, the cam 68 is mounted on the shaft carrying the quick pitch member 53. The invention may be applied to a grinding machine.
Patent GB-1405749-A (GB)
Title: Extrusion of powder billets
IPC: B22F3/20
Filed: 1971-06-22
Abstract: 1405749 Extruding DAVY INTERNATIONAL Ltd 22 Sept 1972 [22 June 1971] 29175/71 Heading B3P [Also in Divisions C7 and B5] An extruded product is made by hot extruding a billet formed of partially compacted metal powder coated with a surface sealant. The sealang may be glass, salt or a ductile metal. The powder is compacted isostatically in a rubber or other elastomeric material bag 1 in a pressure chamber 4. The coating may be applied by dipping the compact in a bath of molten salt or glass or by spraying with glass. In the dipping case two layers of glass of different melting points are applied. Alternatively the inside of the bag can be sprayed with glass before the compaction. If a ductile metal is used for the coating it is in powder form with a particle size one third of the size of the powder particles of the billet. The coated billet is heated in a non-oxidizing atmosphere of hydrogen or inert gas before extrusion. The billet may be made of steel powder.
Patent GB-633205-A (GB)
Title: Improvements in and relating to grass edging shears
IPC: A01G3/06
Filed: 1947-11-01
Abstract: 633,205. Shears. SCOTT, A. Nov. 1. 1947. No. 29208. [Class 30] An attachment for a pair of grass edging shears comprises an elongated shallow metal tray A of U-shaped transverse section adapted to be secured to the lower blade B of the shears and provided therein parallel to the shear blades with one or more rows of upstanding teeth C between which the grass cut by the shears is forced. The teeth may be cut from a strip of sheet metal the lower edge of which is bent at right-angles to form a base D which is welded or otherwise secured to the inside of the tray A, which may also be of sheet metal.