baber/WOPTO huggingface dataset:
Patent GB-394970-A (GB)
Title: Improvements in transmission apparatus for converting irregularly occurring movements into substantially regular movements
IPC: F16H29/04
Filed: 1931-12-03
Abstract: 394,970. Interrupters ; control of motors. LANDIS ET GYR SOC. ANON., 1, Hofstrasse, Zug, Switzerland. Dec. 3, 1931, No. 33538. Convention date, Dec. 17, 1930. [Classes 38 (iii) and 38 (v).] Relates to apparatus for converting irregularly occurring movements, such as those produced by a meter shaft in response to irregularly occurring impulses, into a corresponding number of regular movements, more particularly for producing regularly repeated impulses to avoid loss of impulses when the meter is subjected to rapidly fluctuating movements. As shown in Figs. 1 and 2, the shaft 22 which is subjected to irregular movements operates one wheel 19 of a differential mechanism 2, the planet wheel 26 of which rotates a cam 3 having a notch 27 so as to release a detent 5 and thereby allow the pivoted lever 4 to move the lever 10 longitudinally into the range of a motor driven cam 8. In this position, the lever 10 is oscillated by the cam teeth 28 to operate contacts 11, 12 at a regular speed and simultaneously operate a pivoted lever 18 carrying a pawl 16 which drives a ratchet wheel 17. The wheel 17 operates, through gearing 24, 25, the second wheel 23 of the differential 2, the arrangement being such that impulses are transmitted and the wheel 23 is operated at constant speed until when motion of the shaft 22 ceases, the planet wheel 26 is restored to its initial position and the cam 3 withdraws the lever 10 from the range of action of the cam 8. The Specification as open to inspection under Sect. 91 comprises also the modification shown in Figs. 3 and 4 (Cancelled) wherein the irregular movements of the shaft 22 are stored in a spring 30 which controls a wheel 37 having pins 36 adapted to be released at regular intervals by the notches 41 of a continuously rotated disc 42. This Specification comprises also further modifications wherein the accumulated energy in the spring may be released at constant speed through the intermediary of pawl and ratchet gear, a slipping clutch or under the control of a differential mechanism ; the shaft 22 may also control, by means of a cam, the clutching of the planet and one sun wheel of a differential gear until the movement of the cam is wiped out by the gear. The Specification also describes a further arrangement wherein the irregular movements displace, through differential gearing, a contact disc which closes the circuit of a motor adapted to restore the disc through the differential gearing. This subject-matter does not appear in the Specification as accepted.
Patent GB-727557-A (GB)
Title: Landing gear brake pressure metering apparatus
IPC: B64C25/46
Filed: 1953-12-03
Abstract: 727,557. Aircraft undercarriages. WING- FOOT CORPORATION. Dec. 3, 1953 [May 15, 1953], No. 33598/53. Class 4. [Also in Group XXXIV] In an aircraft brake assembly, the wheel is carried by a telescopic strut and the brake is supplied with fluid under pressure through a metering valve which is controlled by relative movement of the parts of the strut in accordance with the weight of the aircraft so as to prevent skidding the wheel wher the aircraft is landing. When the two parts o: the oleo strut are telescoped on landing, the metering or control valve 10, secured to the fixed strut section 2 carried by the wing or fuselage 3, is controlled so as to be in desired proportional relationship to the load applied to the wheel 5. In order to control the brake pressure applied to the wheel 5 by the conventional brake means 8, a gear rack 13 is pivotally secured to a bracket 14 secured to the movable strut section 4. This gear rack 13 engages a small diameter gear 16 journaled to the fixed strut section 2 and which, in turn, engages a relatively large diameter gear 17 also journaled on the fixed strut section and used for controlling the setting of the control finger 12 of the metering valve 10. Thus with rotation of the gears 16 and 17 by relative movement of the movable (4) and fixed (2) strut sections, the setting of the metering valve 10 can be widely varied and be accurately controlled. Hence, as greater load is applied to the wheel 5, then greater braking forces can be applied to such wheel without producing any skidding action therein. Other modified types of control mechanism are described and illustrated in the Specification and it is stated that this mechanical type of pressure control system may be adapted for use with conventional or known types of brake anti-skid control means which rotate with the wheel.
Patent GB-504053-A (GB)
Title: Improvements in or relating to electric switch contacts, particularly for alternating-current circuits
IPC: H01H23/16
Filed: 1937-12-04
Abstract: 504,053. Snap-action switches. ARNOLD, C. L., and M.K. ELECTRIC, Ltd. Dec. 4, 1937, No. 33623. [Class 38 (v)] An electric switch for A.C. comprises fixed contacts with two oppositely disposed faces, one of which extends beyond the other, and a moving contact which during the making operation first moves into contact with the extended face at an angle thereto, and then slides over it until it engages between the opposing faces of the fixed contact. In a two-way single-pole snap-action switch, two pillars 9 mounted on a base 1 carry a bridge 8 to which a dolly 6 is pivoted at 7, and on which a member 11 slides. Also pivoted at 7 are arms 10, which have two horns 10a engaged by lugs 11a on the member 11 to give positive actuation, and which carry at their lower ends the cross-piece of a T-shaped member 13 which also engages in slots in upwardly turned lugs 2a on the moving contact 2. Upon movement of the dolly 6, its lower end moves a guide member 12 across, which carries with it the member 11 and causes the arms 10 to rotate and move the contact 2 across a roller 5, a helical spring 14 coiled round the central limb of the T-member 13 and compressed between the cross-piece and the guide-member 12 giving a snap-action. Four fixed contacts each comprise a comparatively massive flat strip 3 of brass, phosphor bronze or copper, and a superposed shorter strip 4 of springy metal, and are connected in pairs by limbs 2b of the moving contact 2 which first slides along the face of the left-hand strips 3 until it is free from engagement with the strips 4. At the dead centre position it tilts to break the left-hand circuit and make contact with the right-hand strips 3, and then it slides below the strips 4. The sliding provides a cleaning action, while any burning of the fixed contact takes place on the extended surfaces of strips 3 which do not form part of the conducting paths-when the switch is completely closed.
Patent GB-738252-A (GB)
Title: Lattice-type antimetric filters
IPC: H03H7/01
Filed: 1953-12-03
Abstract: 738,252. Lattice filter networks. COMPAGNIE INDUSTRIELLE DES TELEPHONES. Dec. 3, 1953 [Dec. 5, 1952], No. 33631/53. Class 40 (8). Lattice-type antimetric filters have an image impedance W1 and an image impedance W2 = R<SP>2</SP>/W1, the quantity #W1<SP>2</SP> - 1 representing a mutual reactance, and have an attenuation function q=coth #, designating the exponent of transfer to image-impedances, the filters being composed of a first group of two adjacent reactances Z1 and R<SP>2</SP>/Z1 and by a second group of two adjacent reactances Z2 and R<SP>2</SP>/Z2 the filters being characterized in that the reactances Z1 and Z2 are chosen so that the following conditions are simultaneously fulfilled: (a) for frequencies for which W1 and q cancel out (cut-off frequencies) only one of the two reactances Z1 or Z2 allows a modulus R; (b) for frequencies cancelling the attenuation function q (zero attenuation) the reactances Z and Z2 are both of modulus R and are opposite; (e) for frequencies cancelling the function W1 (infinite attenuation) the reactances Z1 and Z2 are both of modulus R and are equal. The Specification includes a full mathematical discussion of these filters, values of Z1 and Z2 being derived for low pass and band-pass filters. The filters may be arranged to have abrupt cut-offs by composing the reactances of piezo-electric crystals combined with capacitors and inductors.
Patent GB-342376-A (GB)
Title: Improved process and apparatus for shaping and cleaning up ingots to facilitate subsequent rolling or forging operations
IPC: B23Q35/10
Filed: 1929-11-05
Abstract: 342,376. Castings ; lathes. WALDRICH GES., H. A., Siegen, Westphalia, Germany, and EYERMANN, P., 10, Hohlweggasse, Vienna. Nov. 5, 1929, No. 33697. [Classes 83 (i) and 83 (iii).] In a process and apparatus for cleaning up non-circular ingots as a preliminary step in the production of finished or semi-finished rolled or forged articles by means of a former, the former is adjustable both longitudinally and rotationally in relation to the work in order to make it possible to remove a minimum amount of material from the ingot &c. The apparatus consists of a copying lathe comprising a bed 22 having guides for a saddle 20 on which is mounted a transverse slide 25 carrying the tool support k. Springs on the saddle press a roller 26 on the slide and the turning tool b against the former a and work f respectively. The former is rotated in unison with the work bv gearing 2 connected to the headstock spindle 4 and a coupling 45 is provided, having arcuate slots and screws, to allow rotational adjustment of the former in relation to the work. For axial adjustment of the former it is screwed at 41 on its shaft 1 and is provided with lock-nuts 43, 44. More than one tool b may be provided, as shown at b, b<1> in the Figure, arranged at one or both sides of the work, the former then being shorter than the work in proportion to the number of tools used. In operating on the first non-circular forging &c. f of a batch, the former is adjusted so that the work may be cleaned up with a minimum of material removed, this adjustment then serving for all subsequent forgings of the same batch and the tools being only adjusted on their supports to vary the depth of cut if necessary. The work is driven at c and is supported by a centre d. The process is stated to be particularly applicable to costly materials such as special steels, bronze, &c., and rotary milling-cutters may be used in place of the turning tools shown.
Patent GB-404442-A (GB)
Title: Improvements in and relating to wind-screen wipers
IPC: B60S1/26
Filed: 1932-11-29
Abstract: 404,442. Windscreen-cleaners. MONK, R. J., 56, Perth Road, Wood Green, London. Nov. 29, 1932, Nos. 33776 and 37010. [Class 138 (i).] The driving spindle of an oscillatory windscreen-cleaner is provided with a detachable toothed pinion adapted to operate a rack rod by means of which a second or supplementary windscreen cleaner is oscillated. In the construction shown in Figs. 1 and 2, the driving spindle a is provided with a hollow shaft b integral with which is a toothed pinion c arranged inside a casing d. A rack e fitted in the casing meshes with the pinion c. A wiper arm h is mounted upon the forward end of the shaft b, which is split longitudinally and is engaged by a screw i whereby the shaft b and arm h are fixed in place. The rack e is connected by a rod g to a rack e<1> mounted in a casing d and meshing with a pinion c<1>. The pinion is mounted on a hollow shaft b<1> which carries a wiper arm h<1> and is journalled on a bearing pin b<2> mounted in the windscreen frame. The wiper arm h is pivotally mounted on a pin k<1> inside a fork k which is engaged by a spring- pressed washer l, the spring m normally acting to press the wiper against the screen, but adapted also to hold the arm at right angles to the screen when it has been withdrawn to the position indicated in dotted lines. In a modification shown in Fig. 4, the hollow shaft b of the pinion c is secured to the driving spindle by a screw o. In the construction shown in Fig. 5, the arm h is clamped on the split end of the hollow shaft b by means of a split boss k tightened by a bolt p.
Patent GB-340698-A (GB)
Title: Improvements in fly-catchers
IPC: A01M1/16
Filed: 1929-11-07
Abstract: 340,698. Flypapers. HARDCASTLE, E., Mersey Bank Mill, Wilmslow Road, East Didsbury, Manchester. Nov. 7, 1929, No. 33901. [Class 5 (i).] A flypaper comprises an adhesive band 1 rolled up on a core 2 of string, cord, or tape secured to one end of the band and of considerably greater length than the width of the band, from which it projects for some distance. A piece of tissue or other paper 4 is rolled up in the last few convolutions of the band of which a dry portion 1a is left to protrude, the projecting ends of the paper 4 being closed, as by twisting, to seal the band. The paper may be used by tying together the ends of the string and pulling out the end la to form a flat paper, or by pulling out one of the ends 4 to form a conical paper.
Patent GB-478906-A (GB)
Title: Improvements in and relating to thread delivery devices for high speed warp knittingmachines
IPC: D04B15/38
Filed: 1936-12-10
Abstract: 478,906. Knitting-machines. WIRTH, (nÚe RICHTER), E. H., DONNER, (nÚe WIRTH), H. D., LOSCHNER, (nÚe WIRTH), J. M., and WIRTH, E. H. Dec. 10, 1936, No. 33992. Convention date, Dec. 11, 1935. Addition to 423,222. [Class 74 (ii)] In thread-delivery device as described in the parent Specification, in which the tension of the warp thread raises a shaft 5 to throw in a clutch 25 to rotate the warp beam through worm gearing 6, the clutch and coupling are mounted on the warp-beam bracket to shorten the length of the shafts 5 and so minimize vibration. Independent brakes comprising drums 28 and adjustable jaws 31, 32, are mounted on the hubs of the worms 6 to prevent distortion of the shaft 5.
Patent GB-357414-A (GB)
Title: Improvements in or relating to beater or bed plates for use in paper mills
IPC: D21D1/02
Filed: 1930-12-18
Abstract: 357,414. Paper pulp beaters. BECKETT, C. E., Argus Works, Green Lane, Sheffield. Dec. 18, 1930, No. 34005. [Class 96.] Spacing plates or dividers A, Figs. 2 and 3, of metal, wood, fibre, &c. between the blades E of a bedplate have elongated slots B, Fig. 3, for the clamping bolts E, and a recess F at the base of each end, to enable the dividers to be lowered and machined to allow for wear in the blades D. The bolts E are slackened and, when the dividers have dropped the required amount, again tightened, packing strips G being placed transversely under the ends and the dividers machined. The slots B may be open at their lower ends.
Patent GB-1118674-A (GB)
Title: Improvements in or relating to injection moulding machines
IPC: B29C45/76
Filed: 1965-08-10
Abstract: 1,118,674. Injection moulding machines. BRITISH UNITED SHOE MACHINERY CO. Ltd. 10 Aug., 1965 [12 Aug., 1964], No. 34141/65. Heading B5A. When a mould cavity is filled, entry of low pressure air through a sintered bronze insert 52 in one wall of the cavity is cut off so that pressure builds up in a supply line 76 to operate a mioroswitch (86) in a switch box 84 and stop injection through a passage 91. The invention is applied to a machine for injection moulding sole and heel units. Mould assemblies 2 are moved in turn into alignment with an injection nozzle 90, and an air cylinder 62 moves a block 68 carrying a bushing 74 (Fig. 2, not shown) into engagement with a block 58 so as to connect the bronze insert 52 to an air cylinder 78 which operates the microswitch, (86). Before the insert 52 is blocked by injected material air introduced through it escapes from the mould cavity between the various members of the mould. A gate valve 94 prevents escape of material from the mould cavity after disengagement from the injection nozzle 90.
Patent GB-1136880-A (GB)
Title: A stress relief assembly for semiconductor devices
IPC: H01L23/48
Filed: 1967-07-25
Abstract: 1,136,880. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORP. 25 July, 1967 [26 July, 1966], No. 34147/67. Heading H1K. A flexible seal 80 is used to hermetically join the cover 60 of a semi-conductor device container to the body 18 of the container. As shown the container comprises a studded base 12 of Cu, steel, &c., brazed to a steel tubular portion 18. The cover 60 is of an insulating ceramic such as alumina, or glass, the flexible seal comprising an annular bellows 80 of spring steel, brazed or welded to the adjacent parts. The device 22 is a 3-electrode PNPN switch of Si, Ge, SiC, or III-V or II-VI compounds, having an opening etched through one outer zone to permit a control electrode to be applied to an inner zone. The device 22 is supported by a disc 20 of Mo, W, Ta or base alloys thereof, and rings 44, 46 of Cu, Ag or base alloys thereof are applied to the upper device surface, the assembly being bonded together by brazing, soldering or pressure bonding. A lead 54 is connected to the control electrode. The container may be evacuated or filled with dry H 2  or an inert gas.
Patent GB-342019-A (GB)
Title: Improvements in and relating to electrical coding and de-coding devices
IPC: G09C1/12
Filed: 1929-11-08
Abstract: 342,019. Coding-machines. KORN, W., 75, Fregestrasse, Friedenau, Berlin. Nov. 8, 1929, No. 34155. Convention date, Nov. 8, 1928. [Class 146 (ii).] In coding-machines comprising revoluble contactbearing cylinders, movement-transmitting pinions for the cylinders are provided with means for locking the cylinders after each operation thereof. The cylinders and a counting-device geared thereto may be turned backwards to permit correction of an error in coding, or forwards to a code setting indicated by the counting-device. The apparatus shown in Figs. 1, 8, and 10 comprises cylinders 1 .. 4 provided with contact pins 20, and a cylinder 22 provided with a ratchet-wheel 21 co-operating with a pawl 25 operated by the keys, the pawl being jammed by a stop after a one-tooth movement. The cylinders are held in contact by means of pins 18 and co-operating inclines 17 on a sliding plate 17<a>, the pins being carried by a lever 19 which is rocked to permit of removal of the cylinders. Movement is transmitted from the cylinder 22 to the cylinder 1 by a pinion 31 engaging toothed wheels 26, 27. Movement is transmitted from the cylinder 1 by pinions 43, 44, 45 which engage toothed wheels 28, 29, 30 on the cylinders 2, 3, 4 and are operated intermittently by pairs of teeth 32, Fig. 10, on rings 36, 37, 38 connected to the cylinders 1, 2, 3. Each of the pinions 43, 44, 45 is formed with alternate long and short teeth 46, 47, the short teeth co-operating with the pairs of teeth 32, and the long teeth resting on the rings and locking the cylinders after each operation. The rings have gaps 32<b>, Fig. 10, for permitting movement of the pinions when engaged by the pairs of teeth. The pinions have square shanks co-operating with springs 49 to retain the pinions and cylinders in adjusted position. The pinions are mounted on arms 51 on a shaft 52, Fig. 8, which can be rocked to release the pinions by advancing a lever 57 having a pin 60 engaging a forked arm 55 on the shaft. When the pinions are released, the cylinders are independently adjustable, and roller detents 13 .. 16 move into engagement with notched wheels 5 .. 8 on the cylinders 1 .. 4 to retain the latter. The detents are carried by arms 9 .. 12 on a spring-urged shaft 65 having a finger 66 engaging a cam 64 on the shaft 52. On return of the lever, the detents are released and the pinions are re-engaged, the arrangement relieving the pinions from moving the cylinders in opposition to the detents. The lever has a pin 61 for engaging retaining-notches 62, 63. A counting- device 76 is connected by gearing 72, 74 to the cylinders and can be moved backwards or forward by means of a crank 77. Character-rings 33 mounted on the cylinders are secured in adjusted position by means of spring-pins 39. The ratchetwheel 21 may be carried by the cylinder 1, the cylinder 22 being omitted.
Patent GB-1072387-A (GB)
Title: Improvements in method of eliminating patterns from shell molds
IPC: B22C1/20
Filed: 1965-08-10
Abstract: 1,072,387. Eliminating patterns from shell moulds. HOWE SOUND CO. Aug. 10, 1965 [Aug. 13, 1964], No. 34161/65. Heading B5A. [Also in Division B3] A pattern of fusible material, e.g. wax, is removed from a permeable refractory shell mould by soaking the pattern-mould assembly in a flammable liquid so as to permeate the mould, and igniting the liquid so as to fuse the pattern material and let it flow from the mould. The liquid may be a combustible siliciferous composition, e.g. colloidal silica dispersed in an inflammable solvent such as isopropanol, or an organic silicate such as ethyl silicate preferably dissolved in a combustible solvent such as acetone or ethanol, which leaves a residue of silica on combustion in the pores of the refractory shell mould, thereby strengthening the mould. The shell mould may comprise refractory particles bonded by a siliciferous binder, e.g. hydrolysed ethyl silicate or isopropyl silicate, and may be made by known techniques, e.g. spraying or dip-coating the pattern, preferably forming several layers, the first preferably being less permeable than those applied over it.
Patent GB-638657-A (GB)
Title: Improvements in or relating to clutch mechanism of circular knitting machines
IPC: F16H3/00
Filed: 1947-12-24
Abstract: 638,657. Knitting-machines. MELLOR, BROMLEY, & CO., Ltd., and SHORTLAND, A. Dec. 24, 1947, No. 34239. [Class 74 (ii)] The clutch mechanism of a circular machine is operated by a lever 12 which also functions to operate the switch cam to move the instep needles to inoperative position during reciprocatory knitting. The lever 12 is controlled from a pattern drum and is provided with a pin 17 which engages thrust cams 10, 11 to move the clutch sleeve 1 into engagement with either the rotary or the quadrant gear.
Patent GB-753299-A (GB)
Title: Improvements in or relating to formaldehyde polymers
Inventor: MACDONALD ROBERT NEAL
IPC: C08G2/00
Filed: 1954-11-25
Abstract: Solid formaldehyde polymers having a reaction rate constant for thermal degradation at 222 DEG  C., preferably less than 1 per cent by weight per minute, a degree of toughness at least 1, and preferably an inherent viscosity of at least 1.0 measured as a 0.5 per cent solution at 60 DEG  C. in p-chlorophenol containing 2 per cent alphapinene, are made by passing gaseous, substantially anhydrous, monomeric formaldehyde into a reaction medium which is inert under the conditions of the reaction and polymerizing the formaldehyde continuously as it is introduced into the zone.  The polymerization may be effected in the presence of a catalyst which may be added portionwise and a dispersing agent.  The process may be operated continuously or batchwise.  "Degree of toughness" is defined as the number of creasing cycles which a film which has been maintained at 105 DEG  C. for seven days, will withstand before breaking, the cycle consisting of creasing the film, turning the film through 180 DEG  C. and creasing again. Reaction media mentioned are propane, butane, pentane, hexane, heptane, octane, decane, cyclopentane, cyclohexane, methylcyclohexane, 1,4-dimethylcyclohexane, cycloheptane, decahydronaphthalene, benzene, toluene, xylene, and petroleum fractions containing octanes.  The dispersing agent may be the reaction product of polyethylene glycol with wool wax alcohols, long chain fatty acid diesters of polyethylene glycols and polypropylene glycols, silicone oils, alkylarylpolyoxymethylene glycol ethers, reaction products of hydrogenated rosin and olefin oxides, sodium oleate, lead stearate, or sodium caprylate. Specified catalysts are methyl, ethyl, butyl, octyl, dodecyl, octadecyl, dibutyl, ethyloctyl, tributyl, trihexyl, dimethyloctadecyl, didodecylmethyl, cyclohexyldibutyl, cyclohexyl, or diethylcyclohexylamine, aniline, toluidine, triethyl, tributyl, tritolyl, or trixylylphosphine, trinaphthyl or methyldioctylarsine, triethylstibine, hydrazine, morpholine, piperidines, N-alkylpiperidines, diphenylamine, and N,N-diethylaminoethanol.  The polymers may be made into sheets, fibres, filaments, bristles, and films.  Specification 748,836 is referred to.