baber/WOPTO huggingface dataset:
Patent GB-668943-A (GB)
Title: Free wheeling hub for bicycles and the like
IPC: B62K25/02
Filed: 1950-02-07
Abstract: 668,943. Free-wheel hubs for cycles. JUY, L. C. H. Feb. 7, 1950 [Feb. 18, 1949], No. 3169/50. Class 136 (ii). A free-wheeling hub incorporates means for locking the hub between the frame lugs and for releasing the hub when required for dismantling without removing the chain pinion, the hub being drivingly connected with the chain pinion carrier through a ratchet wheel, dog clutch or the like, whereby the hub continues rotating when the drive ceases by the pinion carrier being laterally shifted through the reaction between the co-operating clutch teeth on the hub and on the pinion carrier and means for retaining the clutch out of engagement when the pedals are stationary. A hub 1 is mounted on end cups 2 and 3, which rest on sets of ball bearings 4 and 5, on bearing members 6 and 7, which are kept separate by a spacing member 8. An axial spindle 10 carrying an operating lever 11 passes through the frame lug 17, and the hub 1, into a hole 12 in a stationary member 13 made rigid with the frame lug 14 by a threaded rod 15 and nut 16. To dismantle the lever is rotated to cause unscrewing of the spindle 10. The member 13 has a race for rollers 18, over which is carried a carrier 19 for the pinions. At its inner end the pinion carrier 19 has ratchet teeth or a dog clutch registering with a co-operating part 25 on the huh body The pinion carrier has a brake member 26 held by springs fitted inside a recess 28 The brake is released when the clutch engages. When pedalling ceases for freewheeling, the teeth ride over each other, and the pinion carrier is displaced axially bringing the brake member 26 into engagement with the flange 27 which is provided with sloping grooves to complete the disengagement of the clutch member. When pedalling recommences the brake member 26 brings the clutch members together, then they move into full engagement and the brake member returns to its inoperative position.
Patent GB-484832-A (GB)
Title: Improvements in or relating to envelopes
IPC: B65D27/22
Filed: 1937-02-03
Abstract: 484,832. Envelopes. CHAPMAN, C. H., and CHAPMAN. D. G. Feb. 3, 1937, No. 3233. [Class 146 (ii)] An envelope of the kind cut from a single blank and comprising a front portion, a closing flap 18, two lateral flaps 1, 10, a bottom sealing flap 4, and a lateral extension on one of the flaps other than the closing flap, is characterized in that the lateral extension is folded upwardly (i.e. towards the closing flap) or both upwardly and laterally (i.e against the body of the flap of which it is an extension) to form a shallow pocket for the closing flap. As shown, the inner lateral flap 10 has a lateral extension 12 the lower portion of which is separated from the flap by a cut 14, and this lower portion is adapted to be folded about a line 15 to form the pocket for the closing flap. The outer lateral flap 1 is attached to the inner flap 10 by stripes of adhesive 19. The lower free edge of the pocket may be secured to the flap 10 to complete the bottom of the pocket. In a modification, the top edge 17 of the extension is not inclined to the fold-line of the lateral flap, and the outer edge is substantially parallel to the cut 14, whereby the bottom of the pocket formed by folding the extension is substantially parallel to the foldline of the closing flap. In further modifications, the back of the envelope may be formed by a deep bottom flap, the lateral extension being on one of the lateral flaps, or the back may be formed by the lateral flaps and an extended bottom flap, and the lateral extension provided on the bottom flap. Specification 411,742 is referred to.
Patent GB-1456435-A (GB)
Title: Crane
IPC: B66C23/28
Filed: 1974-01-24
Abstract: 1456435 Tower cranes ISHIKAWAJIMAHABIMA JUKOGYO KK 24 Jan 1974 03410/74 Heading B8B In a method of erecting a crane comprising a turntable 4 carrying a luffing jib 18 and having a central opening, the crane is lifted up a column 6 which extends through the opening, cables 37, 38 respectively for lifting and lowering loads and adjusting the angle of inclination of the jib 18 being at the sides of the opening to avoid interference with the column. As shown the jib 18 also has an opening for the column 6 and the lifting is carried out by jacks 5 acting between an upper frame 2 carrying the turntable 4 and a lower frame 3. Each frame 2, 3 has four detents 8, 12, respectively, operated by respective jacks 9, 13 to extend into sockets 7 in the column 6. The frames 2, 3 and the jacks 5 are used in conventional manner to climb the column 6 step-by-step. At the top of the column 6 the jib 18 may be swung nearly vertical in order to add a further section to the top of the column 6, when the crane used for buildings not of great height, Fig. 8 (not shown). For a very tall building, e.g. 40 or 50 storeys, to avoid an excessively high column 6, a column 6 of fixed height is supported from successive floors as they are built up, Fig. 9 (not shown).
Patent GB-1123508-A (GB)
Title: Improvements in storage bags of synthetic plastics material
IPC: B65D33/16
Filed: 1967-01-24
Abstract: 1,123,508. Plastics bags; label holders. W. LENNARTZ. 24 Jan., 1967 [31 Jan., 1966], No. 3430/67. Headings B8F and B8K. A stiff strip 3 is rolled into the end of a length of tube 1 and secured by a hollow rivet 5 which receives an elastic band 8 which can be passed around the opposite end of the bag so formed to close it after it has been filled. A similar strip may be rolled in the opposite end to form the closure. Label slips 6, 7 inserted in the rolled end may be removed by grasping them adjacent cutouts 10.
Patent GB-764364-A (GB)
Title: Method of controlling coating thickness in continuous galvanizing
Inventor: JR CHARLES LEE INGLEFIELD
IPC: C23C2/14
Filed: 1955-02-04
Abstract: 764,364. Galvanizing. UNITED STATES STEEL CORPORATION. Feb. 4, 1955, No. 3446/55. Class 82(2) In the continuous galvanizing of steel strip where the strip leaves the zinc bath through coating rolls 14, 15, the side portions of the strips are subjected to a mechanical blowing and simultaneous heating by gas flames from burners 17, one at each edge of the strip. The heating retards the cooling rate of the zinc on the marginal portions but does not appreciably raise the temperature and thus preserves the spangled appearance. In a modification (not shown) burners are arranged in pairs one of each pair blowing one side of the marginal zone, the other one dealing with the other side.
Patent GB-1424129-A (GB)
Title: Pritned circuit board materials
IPC: H05K1/16
Filed: 1973-01-23
Abstract: 1424129 Electro-plating Ni-P alloy; electrolytic oxidation MICA CORP 23 Jan 1973 3483/73 Heading C7B [Also in Division H1] A multi-layer printed circuit board stock comprises an insulant support with adherent thereto at least one layer of electrical resistance material on which a layer of highly conductive material is in turn closely adherent; the resistive layer being electro-plated nickel-phosphorous alloy, and its surface adherent to the support comprising oxide, hydroxide, or peroxide of nickel produced electrolytically in strong alkali e.g. KOH. The conductive layer may be e.g. copper, tinned copper, aluminium, zinc, or silver foil and the insulant support may be polyester polyimide or epoxy resin reinforced with glass fibre, or paper impregnated with phenolic or melamine resins. Resistive and conductive layers may be patterned by etching over photo-resist or silk screened resist using differential etchants. The electrolytic plating bath may comprise Ni SO 4 , NiCl 2  and NiCO 3  with phosphoric and phosphorous acids and the etchant compositions are specified in detail. U.S.A. Specifications 2662957 and 3343583 are referred to.
Patent GB-115401-A (GB)
Title: Improvements in the Casting of Reinforced Concrete Vessels.
Inventor: ALFSEN HARALD
IPC: B63B5/16
Filed: 1918-02-28
Abstract: 115,401. Alfsen, H. Sept. 13, 1917, [Convention date]. Concrete vessels.-In casting reinforced-concrete ships or vessels in an inverted position, the centering 4 for carrying the inner mould is supported on the bottom slab or floor 1 by means of distance blocks 3 so that the deck 2 can be cast in one operation with the hull. The boards 4 of the centering are arranged to form sheathing for the casting of deck ribs and ether parts. The distance blocks 3 may consist of wedge-shaped blocks of wood, which can be removed, or they may be of stone, concrete, or the like, and shaped to be embedded permanently in the structure. A double bcttom can be moulded by means of an additional mould supported on distance blocks 6 laid on the sheathing 5 for the inner bottom.
Patent GB-1429631-A (GB)
Title: Bistable operating devices pneumatic tyre and wheel rim assemblies
IPC: B65G47/76
Filed: 1972-01-26
Abstract: 1429631 Ejecting articles from a conveyer belt TELOMEX GROUP Ltd 17 April 1973 [26 Jan 1972] 3703/72 Heading B8A [Also in Division F2] A bi-stable blade spring toggle mechanism for automatically ejecting reject articles from an endless band conveyer 10 comprises a bowed leaf-spring 1 seated between a fixed abutment 2 and a movable abutment 3 and held in axial compression, in one or other of two extreme bowed positions A, B, by a spring 4 seated on a fixed stop 9 and acting on the movable abutment 3, the abutment 3 being secured to a rod 5 which passes through the spring 4 and stop 9 and is secured to the core 6 of a solenoid 7 such that the core 6 is engageable with the stop 9 to limit inward movement of the spring-loaded abutment 3 to define the two extreme bowed positions A, B. In operation, with the leafspring 1 in the normal inoperative bowed position B, i.e. clear of the conveyer band 10, a weighing device (not shown) senses a reject article on the belt and provides a signal to momentarily energize the solenoid 7 to outwardly move the abutment 3 against spring 4 whereby the leaf spring is moved to its straight, i.e. dead centre position such that due to its own inertia it continues over-centre and is spring-urged to its position A over the conveyer 10 to guide the reject article off the conveyer 10. The bowed leaf-spring 1 will then remain in this position until a further signal again momentarily energizes the solenoid to initiate the return of the leaf-spring 1 to its former position. A position detecting device (not shown) such as an electrical contact or photo-cell may be provided to detect the position of the leaf-spring 1 and ensure correct correlation with the signals initiating rejection or acceptance of articles on the band 10, or the system may be arranged to return the leafspring 1 into the inoperative position B remote from the conveyer band 10 immediately after each rejection.
Patent GB-642309-A (GB)
Title: Improvements in and relating to electric motor control
IPC: H02P7/06
Filed: 1947-02-07
Abstract: 642,309. Automatic control systems for motors. BRITISH THOMSON-HOUSTON CO., Ltd., GRAHAM, D. H., and HOSSLE, A. Feb. 7, 1947, No. 3723. [Class 38 (iv)] In a shunt motor speed regulating system, supplied from a variable source, a carbon pile A stabilizes the voltage applied to the armature while the pile C and the associated control coil D are in series with the shunt field F across the source and maintain the exciting current constant. Specification 623,988 is referred to.
Patent GB-579168-A (GB)
Title: Improvements in or relating to means for silencing firearms
IPC: F41A21/30
Filed: 1943-05-08
Abstract: 579,168. Gun silencers. LISLE, W. G. DE. May 8, 1943, Nos. 3756 and 7964. [Class 92 (ii)] Relates to gun silencers of the kind in which baffle plates in the form of spiral discs 50 are arranged in a tubular casing 14 spaced eccentrically round the gun barrel 12 to cause the gun gases to swirl about an axis that is offset from the path of the projectile which passes through eccentric perforations in the plates. According to the invention, the baffle plates situated towards the front of the casing have each a radial slit, the portions on adjacent sides of the slit, Fig. 4, being bent to lie at opposite sides of the-general plane of the disc. The casing 14 extends rearwardly around the barrel to form a rearwardly-closed expansion chamber x between the muzzle and the gun receiver. To prevent the formation of a partial vacuum at the gun muzzle, a muzzle attachment comprising a flared nozzle 62 and a rearwardly-extending shield 66 is provided, the shield masking a number of gas escape holes 70 formed in the gun barrel. The discs 50 are supported on rods 40 and the peripheries of the discs are spaced from the interior of the casing, the front flat disc 56 having holes providing front openings at the bottom. In a modification shown in Fig. 7, a front group of spiral plates 50 is combined with a rear group of flat plates 72, 74, 76 and the interior of the rear portion of the casing is provided with a liner in the form of sounddeadening material 82 enclosed in a thin metallic sheath.
Patent GB-536704-A (GB)
Title: Improvements in and relating to wheels, pulleys and the like
IPC: F16H55/44
Filed: 1940-03-04
Abstract: 536,704. Pulleys. CARR FASTENER CO., Ltd., and WAGSTAFF, G. March 4, 1940, No. 4019. [Class 80 (i)] Relates to means for mounting sheet-metal wheels or pulleys on axles. The pulley comprises two complementary plate-like elements 1, 2 stamped from sheet metal and secured together by rivets 3, the outer periphery of each element being shaped to form half the pulley groove 4 and the central portion having a circular aperture 5 and being off-set at 6. A mounting member for the pulley comprises a tubular hubportion 8 having an end portion 9 of reduced diameter adapted to fit over and grip the axle 7. The opposite end has a flange 10 adapted to be inserted in the space between the off-set portions 6 of the pulley, the part 8 then forming a stationary bearing. Alternatively the small end 9 may be passed through a support, e.g. the metal base plate of a radio chassis, and riveted thereto. In a modification, the hub-portion 8 is replaced by a plain disc. In a further modification, Fig. 5, flanges 18 on the plate portions 17 engage mounting members 19 with flanges 22. The members 19 consist of sheet metal pressings sufficiently resilient to enable them to be fitted to axles of slightly varying diameter. For axles of circular section the outer walls 21 form bearings for the flanges 18, but where the axles are of polygonal cross section, the flanges 22 are tended to form bearings for the shouldered portion 24. Instead of forming a groove 4, the halves may form convex portions of a wheel.
Patent GB-197404-A (GB)
Title: Improvement in construction of double acting air pumps or inflators for pneumatic tyres of motor vehicles
IPC: F04B33/00
Filed: 1922-02-11
Abstract: 197,404. Leversidge, I. Feb. 11, 1922. Portable hand-pumps.-An inflating pump is made double-acting, the ends being connected by a valved discharge tube C, and a release valve A, B being provided, by opening which the upstroke may be made inoperative to reduce the labour of pumping at high pressures.
Patent GB-1162474-A (GB)
Title: Time Control Circuit in Electronic Shutters.
IPC: G03B7/16
Filed: 1968-01-25
Abstract: 1,162,474. Electronic shutter control device. KONISHIROKU PHOTO INDUSTRY CO. Ltd. Jan. 25, 1968 [Jan. 26, 1967; March 16, 1967; March 25, 1967 Nov. 22, 1967], No.4043/68. Heading G1A. [Also in Division G2] An electronic shutter of a photographic camera includes a time control circuit comprising a photo-voltaic cell exposed to the taking light, the cell output being applied to the emitter of a grounded base transistor having a D. C. supply and a capacitor in series in its base-collector path, means for discharging the capacitor and means responsive to a predetermined voltage on the capacitor to provide a shutter closing signal. In one embodiment, Fig.1, for use with a flashlight, closing of a shutter release (not shown) closes a switch S 2  to energize an electromagnet M to open the shutter, and a switch S 1  is simultaneously opened so that a capacitor C is charged by the output of a grounded base transistor T 1 , whose input is the voltage of a photo-voltaic cell P, and at a predetermined voltage corresponding to the required exposure time, a transistor T 2  is triggered, in turn triggering a transistor T 3 , cutting off transistor T 4 , de-energizing electromagnet M, and closing the shutter. A variable resistor R adjusts the triggering voltage to allow for variation in film speed. In a modification Fig. 2 (not shown) batteries E 1 , E 2  are replaced by a single battery (E) having the variable resistor (R) connected across its terminals. In another embodiment Fig. 3 (not shown) the photo-voltaic cell (P) with capacitor (C 1 ) or a photo-conductor (Cds) with a series capacitor (C 2 ) is selectively switched by a switch (S 3 ) to the trigger transistor (T 2 ) for flash-light or low intensity light respectively. In another embodiment Fig. 4 (not shown), the photoconductively controlled capacitor feeds a second transistor T 2 <SP>1</SP> whose output is parallel with that of T 2  controls T 3 , the arrangement being such that the output from T 2 <SP>1</SP> predominates over that of T 2  or vice versa according as the illumination is low-level or high-level as in flash; a high resistance (R 1 ) shunts capacitor (C 1 ) to prevent unstable operation of the latter.
Patent GB-781386-A (GB)
Title: Improved machine for inserting belt hooks in conveyor and like belts
IPC: F16G3/00
Filed: 1955-02-10
Abstract: 781,386. Belt-fastening appliances. HAYDEN-NILOS, Ltd., and POTTER, J. J. Feb. 8, 1956 [Feb. 10, 1955], No. 4048/55. Class 80 (1). In a manually-operated belt-fastening machine wire hooks held in a tubular comb-bar 10 by a rod 17 are pressed into a belt end 30 by jaws 24 pivoted in a pawl-carrying frame 13 pivotally and slidably mounted on a rack bar 11 for movement across the belt, the bars 10, 11 being mounted in a frame (not shown) having a pair of belt-clamping jaws (not shown), and according to the invention a floating member 19 slidable in a longitudinal slot in the bar 10 engages the bends of the hooks and the concave ends of the frame 13 so that the thrust of the hooks as they are pressed in the belt is transmitted to the frame 13 to avoid distortion of the bar 10. Lugs 29 on the member 19 engage the frame 13 so that the member 29 is moved across the belt with the frame. The jaws 24 are pivoted at 23 and actuated by removable hand levers (not shown) on stub handles 25 whose common pivot pin 27 is slidable in the frame 13. In a modification the member 19 is thrust against the hooks as the jaws 24 close by abutment faces provided on the jaws.
Patent GB-639997-A (GB)
Title: The production of flared or flanged tubes of thermoplastic material
IPC: B29C65/04
Filed: 1947-02-12
Abstract: 639,997. Flaring the ends of thermoplastic tubes. COMMUNICATIONS PATENTS, Ltd., and ZADE, H. P. Feb. 12, 1947, No. 4098. [Class 87 (ii)] [Also in Groups XI, XVII and XXVIII] The end of a tube 15 of thermoplastic material such as polyvinyl chloride is flared by softening it by highfrequency heating and subsequently or simultaneously forcing it into an annular die-passage 10, and then removing the tube, when the material is cool. The flared part of the tube may be welded to another thermoplastic member by softening part of this member by high-frequency heating. The die may consist of two semicircular metal parts 6, 7 attached to silica-loaded ebonite carriers 12, 13, and a metal base 4 having a plug portion 5 with a protuberance 9. The metal die parts and the plug 5 may form the electrodes of the high frequency heating system. The die may have passages for the circulation of cooling fluid. The cross-section of the die may be such as to modify the cross section of the tube. When the tube is to be welded to a member such as a side wall of a container, for which the tube is to form the inlet, the outer end of the passage 10 is arranged at the same level as the top surface of the base 4 and the carriers 12, 13 are spaced above this surface. The sheet which is to form the side wall of the container is placed on the base 4 with its inlet aperture, which is of smaller diameter than the outside diameter of the flared end of the tube, over the protuberance 9. The parts 6, 7 of the die are then brought together, the adjacent parts of the tube and sheet softened, and the tube forced into the die. The die may form part of an automatically operated machine. According to the Provisional Specification the upper part of the die may be formed in one piece and heating means such as an electric resistance heater may be used.
Patent GB-1490795-A (GB)
Title: Disc brake
IPC: F16D65/18
Filed: 1975-01-30
Abstract: 1490795 Spot-type disc brakes; slackadjusting DEUTSCHE PERROT-BREMSE GmbH 30 Jan 1975 [18 Feb 1974 7 Aug 1974] 4148/75 Heading F2E A hydraulically-operated disc brake, Fig. 1, has a pair of mechanically-operated parking brakes opposite each other across the disc 4 and having their own brake linings, Fig. 3, the parking brakes being adapted to be actuated synchronously by an actuating device, e.g. cable line 6, Fig. 2, common to the pair and situated on the periphery of the disc brake, which actuating device engages with two levers 7, 8, associated respectively with the two parking brakes, the respective lever shafts 9, 10, Fig. 3, being disposed perpendicularly to the brake axis, and respective thrust devices (e.g. a cam 15, Fig. 5, on the respective shaft) for the parking brakes each associated with a lever shaft and engaging with a pressure member (e.g. cam follower 16, lining support 18 and all components therebetween, Fig. 5) acting on the brake lining 19 of the respective parking brake. For slack adjustment, and considering shaft 9, a pin 30, Fig. 3, extending from shaft 9 into a slot 29, Fig. 4, provided in an additional ring 26, moves only a distance L<SP>1</SP> during brake application before wear occurs; when sufficient wear has occurred, pin 30 rotates ring 26 until locking-teeth on the ring jump one tooth relative to mating teeth 25, Fig. 3, on an externally screw-threaded ring 17, Figs. 3, 5, so that, on brake release, ring 17 unscrews out of lining support 18 to lengthen the pressure member. In Figs. 6 to 8 (not shown) the cable line 6 is omitted and levers 7, 8 point almost towards each other; between them is located a square lever plate (31) which has two opposite corners pivotted to the respective levers, one other corner pivotted to a tie rod (37) and the remaining corner connected by a spring (39) to a boss (41) on one of the levers. When the tie rod is pulled for application, both levers are forced to rotate counter-clockwise.
Patent GB-1371892-A (GB)
Title: Key
IPC: F16D1/08
Filed: 1973-01-26
Abstract: 1371892 Mounting wheels &c. on shafts DRAADINDUSTRIE JONGE POERINK NV 26 Jan 1973 [27 Jan 1972 5 Oct 1972] 4192/73 Heading F2U A key 3 for mounting a hub 12 (e.g. of a wheel or pulley) on a shaft 1 with a keyway, comprises a lug 8 projecting radially outwardly from the key and resiliently connected thereto, the lug being depressable radially into the shaft keyway to allow the hub to be mounted. The key may be of plastics and the lug 8 may be connected to the key via a neck, the lug being allowed to depress either by the keyway being locally deepened, or by the base of the key being relieved at the lug. The lug 8 may have a chamfer to assist assembly and/or a depression (15), Fig. 3 (not shown) for a tool, to facilitate dismantling. The other end of the key may have another lug 7 which may or may not be depressable.