baber/WOPTO huggingface dataset:
Patent GB-1123676-A (GB)
Title: Carbon-nitrogen backbone chain polymers
IPC: C08G73/02
Filed: 1966-07-22
Abstract: The invention comprises polymers containing units of formula <FORM:1123676/C3/1> where R1 is a monovalent hydrocarbon or halogenated hydrocarbon radical.  R2 and R3 are divalent hydrocarbon or halogenated hydrocarbon radicals, and n is from 0 to 3.  The polymers are prepared by heating one or more compounds of formula <FORM:1123676/C3/2> at 75 DEG  to 250 DEG  C. in the presence as catalyst of an alkyl halide, a boron-fluorine or antimony-fluorine compound, a strong acid, a salt of a strong acid with an oxazoline or oxazine, an ester of a strong acid, an acidic ion-exchange resin or an acid-activated clay.  A compound of formula <FORM:1123676/C3/3> where m is 2 or 3, may be included in the reaction to obtain polymers containing some units which have no ether substituents. In examples polymers are obtained from 2-(p-methoxyphenyl) - 2 - oxazoline, from 2-ethoxymethyl - 2 - oxazoline, from methoxy-2 - ethoxymethyl - 2 - oxazoline, and from a mixture of 2 - heptyl - 2 - oxazoline and 2-ethoxy - methyl - 2 - oxazoline, the perchlorate salt of 2-(p-chlorophenyl)-2-oxazoline being used as a catalyst.
Patent GB-504845-A (GB)
Title: Improvements in or connected with optical sighting apparatus
IPC: F41G1/12
Filed: 1937-12-01
Abstract: 504,845. Range - finders &c. BARR & STROUD, Ltd., and MACGILL, C. D. Dec. 1, 1937, No. 33171. [Class 97 (i)] Sighting-apparatus for estimating the range or base length of a target from the size of its image is provided with means for producing, in the line of sight, two images formed from markings comprised in the apparatus to form reference images, and means for varying the distance apart of the reference images to coincide with the length of the target image, the adjusting- means comprising setting movements corresponding to two of the three related factors, range, length of target base, and subtended angle, and means for mechanically combining these to indicate the third factor. The invention is particularly applicable to apparatus in which the target is observed through a transparent screen which also serves as a reflector for presenting the reference images to the observer. The means for producing and setting the reference images comprises a lamp 3 for illuminating a pair of graticules 5, 6 and a collimator 4 for projecting the rays on to the refiecting screen. The graticule 5 is fixed and the graticule 6 is carried by a rotatable mounting 7 provided with spindles 8 extending through slots in the casing. Each spindle carries a pinion 9 engaging toothed rings on operating heads 10, 12 so that the resultant of the rotations of the heads is applied to the mounting 7. The heads are set in accordance with scales graduated logarithmically to correspond to target base and range. The lower face of the graticule 5 carries two separated diametrical markings 13 and the upper face of the graticule 6 has opaque masking wings 15 on a transparent background, so that by rotation of the graticule 6 the distance between the inner extremities of the unmasked portions of the markings 13 can be varied, Fig. 5. Preferably the graticule 5 also includes a circular mark 14 to assist in sighting, and in this case the wings 15 are provided with transparent arcs 16 so that the image of the circle 14 is complete in all positions of the graticule 6.
Patent GB-1088286-A (GB)
Title: Plastics containers
Inventor: SAMUEL HENRY
IPC: B31B50/59
Filed: 1963-08-22
Abstract: 1,088,286. Sheet forming. DISTILLERS CO. Ltd. July 28, 1964 [Aug. 22, 1963], No. 33251/63. Heading B5A. A container, having hinged body and lid portions, e.g. a cigarette box, is formed by vacuum or blow moulding a single sheet of thermoplastic material into adjacent moulds, and compressing the material located between said moulds to thin it and form the hinge. In the embodiment shown, a heated sheet 4 is pressed into two vacuum moulds, separated by a ridge 10, by a suitably shaped plunger 8, until the material between the ridge 10 and part 9 of the plunger has been compressed and thinned to the required degree. The sheet is then sucked from the plunger to completely form the body and lid portions of the container.
Patent GB-682881-A (GB)
Title: Improvements in power plant
IPC: H02K7/18
Filed: 1949-12-29
Abstract: 682,881. Propelling ships. SOC. D'ETUDES DE MACHINES THERMIQUES. Dec. 29, 1949. [Dec. 30, 1948] No. 38272/49. Class 114. [Also in Group XXVII] In an internal-combustion power plant comprising one or more multi-crankshaft engines, clutch means 6, 7, 8 and 9 at one end of the crankshafts 2, 3, 4 and 5 of the engine or engines for coupling them to a common load such as a ships propeller shaft 11, preferably through a speed reducer 10, and two or more electric generators 14, there is provided clutch means 12 for coupling each of the generators to a different one of the crankshafts at the end thereof opposite to the end to which the load is adapted to be coupled. The engine has four crankshafts 2, 3, 4 and 5, the upper crankshafts 2 and 3 of which are operated by twin banks of piston and cylinder units arranged in V formation ; each of the lower crankshafts 4 and 5, which are driven by single banks of piston and cylinder units, is provided at the end remote from shaft 11 with a clutch 12 in order to drive one of the electric generators 14, one or both of which may be operated as required, depending upon which clutches are engaged. Each generator may be driven as a motor to supply power to the propeller shaft 11. and may also act as a brake whilst one generator may supply current for energizing a starter motor. Each of the crankshafts or the lower crankshafts only may drive a generator ; two or more crankshafts may be spaced vertically one above the other each one having a generator coupled to it.
Patent GB-353347-A (GB)
Title: Improvements in and relating to film controlled switch mechanism
IPC: G03B31/00
Filed: 1930-11-05
Abstract: 353,347. Kinematograph apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Tittle, H. C. ; 712, Diversey Parkway, Chicago, U.S.A.) Nov. 5, 1930, No. 33290. Convention date, Nov. 7, 1929. [Class 97 (i).] Film-controlled switch mechanism comprises a roller having film-engaging flanges 20 21, the flange 21 being movable by a spring 19, when freed by a recess 26 in the contacting film edge, or by displacement of the film, to push a rod 23 and close a movable contact 8 against a fixed contact 7. The roller comprises telescoping portions 16, 17 carrying the flanges, and the flanges are bevelled to render the apparatus sensitive to small film displacements. The portion 16 is rotatably mounted on the reduced end 14 of a stud 2 fixed by a nut 4, and the contacts are enclosed in a block 6 of insulating material mounted in the stud. As shown, the film carries a sound record 25, and operates through a relay 29 to open the circuit of the driving motor 28 when the record has run through the reproducer.
Patent GB-845760-A (GB)
Title: Cup handle stroking machine
IPC: B44D3/22
Filed: 1956-10-31
Abstract: <PICT:0845760/III/1> A machine for printing strokes on cup handles comprises a cup-holder, a carrier, an <PICT:0845760/III/2> applicator mounted on the carrier, carrier-moving means operatively connected with the carrier for moving the applicator towards and away from said holder to engage the handle of a cup thereon, and means operatively connected with the carrier for rolling the applicator along the handle.  As shown, a cup 21 is held by suction on a chuck 8 mounted on a horizontal rotary table 1.  The table is rotated to bring the cup into a position perpendicular to the carrier 91, and the chuck then rotated by a slipping friction wheel 18 until the handle comes against a stop 92 on the carrier.  The subsequent movement of the carrier is controlled by camfollowers 63 and 78 co-operating with tracks 62 and 77 in circular cams 61 and 76, so that the applicator 100 which is of the size and shape of the stroke to be printed and which partially surrounds the barrel 93 at the end of carrier 91 is first brought into contact with the continuously rotating inking roller 110 and is then brought into contact with, and rolled along the cup handle so as to print the stroke.
Patent GB-605969-A (GB)
Title: Screw threading tool and method
IPC: B23G5/06
Filed: 1945-12-10
Abstract: 605,969. Cold working of screw-threads. DEHN, S. G. (Dardelet Threadlock Corporation). Dec. 10, 1945, No. 33356. [Class 83 (iv)] The cold working of a preformed internal V- thread is effected by means of a tap-like member formed of relatively hard material and proportioned to set up metal-flowing interference with the thread, the tap being engaged with the preformed thread at the crest and flanks, whereby metal is displaced towards the roots of the thread and compacted thereon. The compacting of the metal results in an initial compression in. the thread. Soft metals, such as aluminium, may be threaded without preliminary tapping. Fig. 3 illustrates a tool for carrying out the process. All, edges are radiused to ensure that no cutting action occurs and radiused ramps 13 are provided to work the material down to the required crest diameter.
Patent GB-441732-A (GB)
Title: An improved packing device for shafts and like bodies
IPC: F16J15/32
Filed: 1934-11-20
Abstract: 441,732. Stuffing-box packing. MURRAY, W., and WESTON & CO., Ltd., C., 2, Portsmouth Street, Kingsway, London. Nov. 20, 1934, No. 33379. [Class 122 (v)] In shaft-packing devices of the kind comprising an L-packing e pressed on to the shaft by a spring pressed conical ring j the parts are secured in a casing c by screws or studs h and a leaf or helical spring i is positioned beneath each screw head or nut for pressing the conical ring axially. The latter may be extended to shear the oil film on the shaft. Specification 441,708 is referred to.
Patent GB-993228-A (GB)
Title: Improvements in the manufacture of textile yarn bobbins or tubes
Inventor: SPENCER JAMES ROBERT
IPC: B29C57/12
Filed: 1963-08-23
Abstract: 993,228. Grinding. TEXTILE PAPER TUBE CO. Ltd., and SONOCO PRODUCTS CO. May 1, 1964 [Aug. 23, 1963], No. 33427/63. Heading B3D. [Also in Division B8] A paper tube T is reduced in diameter by a sanding belt 19 which is rotated by rollers 21 and is moved lengthwise of the rotating tube T.
Patent GB-466587-A (GB)
Title: Improvements in and relating to permanent magnets and method of making the same
IPC: C22C38/18
Filed: 1935-12-04
Abstract: In making permanent-magnet alloys of the kind which consist mainly of iron, aluminium, and chromium, or of iron, aluminium, and nickel, with or without cobalt, a brittle iron-aluminium alloy is first prepared, crushed to powder, and mixed with the remaining constituents in powdered form; the mixture is then shaped, with or without a binder, to a coherent mass, and sintered.  The sintered product may be heated for about 2 hours at 1000-1400 DEG  C. and cooled in still air or in an air blast.  The preliminary alloy, which may consist of about 50 per cent each of iron and aluminium, or may in some cases contain cobalt or nickel, may be made by heating iron to about 1000 DEG  C. and adding aluminium thereto in small quantities.  Specifications 423,897 and 424,746 are referred to.
Patent GB-658429-A (GB)
Title: Improvements in or relating to knitted fabric and methods of knitting on a circular, independent needle, knitting machine
IPC: D04B1/00
Filed: 1948-12-31
Abstract: 658,429. Knitting. HEMPHILL CO. Dec. 31, 1948, No. 33642. Convention date, March 20. [Class 74 (ii)] A knitted fabric has a section composed of a number of different yarns 1, 2, 3 followed by a section containing a different number of yarns, for example, one yarn 1, the ends of each of such knitted yarn 2, 3 as is not common to both sections and as is unspliced being passed through a number of sinker wales. As described, the fabric is knitted on a multi-feed circular machine. As shown, in course 4 the yarn 2 is taken out of action having knitted a loop such as 5. Thereafter the yarn 2 is taken by alternate needles 6, 7 so that after the yarn is cut its end is held by consecutive sinker loops. The yarn 3 after knitting at loop 9 is knitted by alternate needles 6, 7. When one yarn is replaced by another, the two yarns are spliced in the ordinary manner, whereas when, as shown in Fig. 3, an additional yarn 22 is introduced its free end is knitted by alternate needles to form loops 23, 24 and between these loops it passes through consecutive sinker loops. Specification 518,676 is referred to.
Patent GB-1442857-A (GB)
Title: Recoil and track adjusting mechanism
IPC: F16F9/10
Filed: 1973-07-16
Abstract: 1442857 Endless-track vehicles CATERPILLAR TRACTOR CO 16 July 1973 33700/73 Heading B7H [Also in Division F2] A hydropneumatic piston-cylinder spring for maintaining the tension in the endless track of a track-laying vehicle (Fig. 1, not shown) comprises a cylinder having a small diameter portion 44 in which a working piston 50 slides and a larger diameter portion 32 in which a free piston 34 slides, imcompressible fluid, e.g. grease, between the pistons, and gas behind the piston 34. The cylinder is fixed and a piston-rod 26 carries an idler wheel (16, Fig. 1) over which the track passes. Inward movement of the piston 50 results in a smaller movement of the piston 34 to compress the gas. The small diameter cylinder portion 44 is detachably bolted on the other portion and a safety arrangement 64, 70 ensures that the bolts 38 cannot be removed unless the gas chamber 30 is vented. The tension in the track may be adjusted by supplying more grease to the space between the pistons.
Patent GB-1275151-A (GB)
Title: Linear fm signal generator
IPC: H03K3/78
Filed: 1969-07-04
Abstract: 1275151 FM signal generators WESTINGHOUSE ELECTRIC CORP 4 July 1969 [23 Aug 1968] 33706/69 Headings G4A and G4H  An F.M. signal generator comprises means for multiplying a clock input signal by selected digital input data and means for providing a stepped digital output sweep variable between selected frequency limits. A circuit 10 can select from four frequencies ranging up to 2, 3, 4 and 5 kHz, and a circuit 14 selects one of five modes of stepped sweep over the whole or part of the selected frequency band. A stepped frequency is therefore fed by control counter 46 in digital form to rate multiplier gating network 44 to pass a fraction of the pulses f in  coming from a clock 32. The resulting frequency f 2  passes to smoothing- counters to appear as frequencies f 3 , f 3  x k 1 , f 3  x k 2 , respectively at terminals 53, 61, 65. The sealer counter 34 is shown in more detail in Fig. 4A and comprises a synchronous binary counter as described in Specification 1,271,672 with carry enable circuits FF(E 1 )-FF(E 4 ) producing outputs at counts of 2<SP>x</SP>-1 where x is the number of the highest related stage. These outputs, delayed by one clock pulse at 94, 96, together with outputs such as Q 1 -Q 4  or their inverses from the several flip-flops FF1-FFn of the synchronous binary counter are applied in groups of five or less to AND gates 68 in rate multiplier circuit 44, Fig. 4B. The multiplier fraction is registered in binary form in control counter 46B to mark appropriate outputs C 1 -Cn. Pulses from the AND gates 68 are collected by OR gate 70 and pass to output 72. The output frequency f 2  increases as the control counter 46B advances.
Patent GB-329354-A (GB)
Title: Improvements relating to stop-motions for looms for weaving
IPC: D03D51/00
Filed: 1928-11-17
Abstract: 329,354. Pilling, T. Nov. 17, 1928. Stop-motions, measuring.-A device for stopping a loom before the weft bobbin or cop is empty, or for stopping the loom at regular intervals, for example in the weaving of fabrics having fringes, comprises a casing A, Fig. 5, having a coarse pitched screw B driven frictionally from the take-up roller and carrying a nut C to which is fixed a finger C' adapted to engage an adjustable stop C<2> on a slide A<2> carrying a finger E. The finger E is connected to a cord E<1>. Fig. 2, attached to the weft-fork holder, so that, on the cord being tightened, the weft-fork X<2> engages the weft hammer to cause the loom to be stopped, while the end g of an arm G on the weft lever X<4> is moved free of a spring-pressed rod F connected to the bearing of the screw B. A friction wheel D on the screw B is thus moved free of a grooved pulley D<1> on the take-up roller, and a spring rotates the screw B to return it to its initial position, the ringer C<1> also returning the slide A<2>, to slacken the cord E<1>.
Patent GB-915475-A (GB)
Title: Push buttons
Inventor: SINCLAIR WILLIAM
IPC: H01H13/74
Filed: 1960-10-01
Abstract: 915,475. Press-button retractive switches; switches held set and freed mechanically. ERICSSON TELEPHONES Ltd. July 27, 1961 [Oct. 1, 1960], No. 33763/60. Class 38 (5). [Also in Group XXV] A switch actuator comprises a first plunger 1, directly operable by a push-button (not shown) and carrying a resilient hook-shaped member 5, and a second plunger 2 carrying a spring latch device 6 arranged to be engaged by the hook 5. Initial operation of the plunger 1 from its rest position (Fig. 5) causes a portion 10 of the hook 5 to wipe downwards across the latch 6 and thus to deflect the hook 5 (Fig. 2). Plunger 1 thus moves to its operative position while plunger 2 remains at rest. On release of the push-button, plunger 1 rises by spring means to an intermediate position in which the hook 5 is just above plunger 2 (Fig. 4); a catch stops plunger 1 from rising further. Re-operation of plunger 1 causes the hook 5 to engage plunger 2 and the two plungers move together. When required, plunger 1 can be returned to its rest position by releasing the catch. Each plunger carries a cam surface 3, 4 which can, conveniently, operate a contact spring pile-up of a telephone instrument, the catch then being released by the receiver rest.
Patent GB-1469378-A (GB)
Title: Production of mycoheptin
IPC: C07G11/00
Filed: 1975-08-14
Abstract: 1469378 Extraction of mycoheptin LENINGRAD N I INST ANTIBIOTI 14 Aug 1975 33919/75 Heading C2A A process for extracting mycoheptin from the mycelium of Streptoverticillium mycoheptinicum comprises contacting the mycelium with a 65-80% by volume aqueous solution of isopropanol containing 1-10% by wt. of calcium chloride and 10-15% by wt. of methylene chloride, precipitating the mycoheptin from solution, washing the precipitate with aqueous isopropanol, drying the mycoheptin and dissolving it in dimethylformamide, reprecipitating the mycoheptin therefrom, and washing the precipitate with 20 to 50% by volume aqueous n-propanol containing 0À2- 0-5% sodium hexametaphosphate by weight; and drying the washed precipitate under vacuum.
Patent GB-790804-A (GB)
Title: Transmission device for water craft
Inventor: ENGELBRECHT HELMUT
IPC: B63H5/125
Filed: 1955-11-28
Abstract: 790,804. Outboard motors. VEB. MASCHINEN-UND ZAHNRADERFABRIK GOTHA. Nov. 28, 1955, No. 34022/55. Class 114. In an outboard motor the drive shaft 1, clutch 4, 5, drive pinion 6 and shaft 3 therefor are removable as a unit from a housing 7 by unscrewing bolts 8 while the propeller unit with its drive is removable downwards from the housing. This unit is mounted in a sleeve 19 by needle bearings 12, the sleeve carrying an underwater housing 9 removable as a unit on unscrewing screws 10 which secure a flanged member 29 to the housing. Opposed bevel gears 22, 21 respectively on the shaft 30 of the propeller. 36 and a shaft 31 coaxial therewith, mesh with a gear 20 on a drive shaft 20a solid with a bevel 6a meshing with the bevel 6 and an opposed bevel on a hollow shaft 23a coaxial with the shaft 20a. The housing 9 and sleeve 19 are secured together by a threaded ring 27 engaging a flange on the sleeve 19, a seal 14 being interposed between the ring 27 and an extension 13 of the flanged member 29 which has passages 17 for the supply of grease to the seal. A sealing ring 14a makes a tight joint between the housing 7 and the sleeve 19. The transmission may be divided among several shafts such as 20a, the shafts being interconnected by spur gears.
Patent GB-841623-A (GB)
Title: Improvements relating to the manufacture of bricks
Inventor: CRAVEN EDWARD STANLEY
IPC: B28B7/18
Filed: 1956-11-08
Abstract: 841,623. Moulding perforated bricks. BRADLEY & CRAVEN Ltd. Jan. 27, 1958 [Nov. 8, 1956], No. 34097/56. Class 87(2). Bricks are pre-formed in a mould and then pressed to final shape in a die or dies in which the perforations are preserved and finally formed. As shown in Fig. 1, a clot of clay is fed to the rotary table mould 1 by the forcing knife 8 of the pug mill 9, perforations being formed by the pins 2. The clot is then ejected by raising the bottom plate 3 and transferred by an endless conveyer band to the die box 10 of a press 11a, Fig. 3. This die box 10 has upright pins 11 which correspond to those in the mould 1. The plunger 16 has a faceplate 17 provided with holes 18 registering with the upper ends of the pins 11 as that when the die closes the brick is finally formed with through perforations. The brick is then ejected from the die box by the bottom plate 12 lifting it off the pins 11. The faceplate 17, also the bottom plate 3 of the mould 1, may incorporate panels to recess the surface of the brick.
Patent GB-761998-A (GB)
Title: Improvements in or relating to contact spring assemblies for electro-magnetic relays
IPC: H01H50/56
Filed: 1953-12-09
Abstract: 761,998. Electromagnetic relays. GENERAL ELECTRIC CO., Ltd., DEWAR, G., and HARRISON, W. J. D. March 9, 1955 [Dec. 9, 1953], No. 34237/53. Class 38(5) The contact spring 6 normally engages a fixed contact spring 5 and is moved to engage a fixed-contact spring 4 by an insulating comb 10, Figs. 1, 2, 4, resting on the armature 3, the comb passing through an aperture in a side extension 14 of the spring 6 and being located by the engagement of the extension part 14a in a notch formed between the main body of the comb and a lip 10b of -the 'latter. The upper end of the comb moves in a recess 27 formed in the side of a relatively stiff spring arm 7, a lip 10a of the comb supporting the latter on the arm 7 when'the armature is removed. An insulating comb 9 resting on the yoke 1 is located at its lower end in an aperture in a member 11 and passes between the bifurcated ends 13 of the springs 4, 5, 6. a tooth 9a on the comb engaging the springs 4, 5 at the roots of their bifurcations to act as a stop. The upper end of the comb 9 is located in an aperture in the arm 7. Two such contact assemblies may.be mounted side-byside on the yoke 1, the arrangement permitting removal of the armature without removal of any part of the assemblies. In another construction, Figs. 5, 6, the moving and fixed combs 16, 17 of each spring assembly are in-line and their lower ends located in apertures in a flexible spring 15 having a turned-over end 26 resting on the yoke 1. The side extension 14 of the contact 6 is omitted and instead the armature has a T-shaped end 3a. A pin 18 in the comb 16 retains the latter on the arm 7 when the armature is removed.