baber/WOPTO huggingface dataset:
Patent GB-611898-A (GB)
Title: Improvements in and relating to machines for sawing diamonds and other gem stones
IPC: B28D5/02
Filed: 1946-05-13
Abstract: 611,898. Sawing stone. JACOBS, S. May 13, 1946, No. 14424. [Class 124] [Also in Group XXXIV] In a saw machine for cutting diamond and other gem stones wherein the stone is fed against a rotating saw or disc, the shaft of the saw rests on metal bearing surfaces of vee form and the ends of the shaft are engaged by metal members, one of which is adjustable in the direction of the axis of the saw. As shown, a saw 7 has a shaft 8 resting in vee blocks 13 held in slots in the base 1, the ends of the shaft engaging semi-spherical bearings 14 and 17, the latter being adjustable by means of the knurled nut 18 and lock-nut 22. The stone is held in holders 39 adjustably supported on an arm 24 pivotally held by shafts 80 in adjustable bearings in a cradle 52 transversely adjustable on the base 1. An adjustable stop 67 is mounted in a pivoted block 66 in the arm 24 to control the downward movement of the stone holder. The saw 17 and the arm 24 may easily be removed and returned to their original position. The machine is stated to be very rigid in use and to prevent lateral movement of the saw in the cut.
Patent GB-475738-A (GB)
Title: Improvements in and relating to cinematograph apparatus
IPC: G03B21/18
Filed: 1936-05-21
Abstract: 475,738. Kinematograph projectors. BRITISH THOMSON-HOUSTON CO., Ltd., and BOWEN, A. May 21, 1936, No. 14435. [Class 97 (i)] In a projector having its spool boxes provided with fire traps and with spring-controlled knives engaging the film between the guiding faces of slots when released by the fusing of a strip, each knife is pivotally supported by a radius arm within each fire trap so as to swing with an arcuate movement under spring bias, and each arm is restrained by a tensioned link passing through its fire trap casing and connected to one end of a fusible element the other end of which is connected to a fixed part of the apparatus. Mechanical connections may be provided so that both knives are operated by the same fusible element, or separate fusible elements may be provided for the two knives. Specification 473,151 is referred to.
Patent GB-108944-A (GB)
Title: Improved Mechanism for use in Reversing Multi-cylinder Engines.
IPC: F01L13/00
Filed: 1916-10-12
Abstract: 108,944. Wolseley Motors, Ltd., and Remington, A. A. Oct. 12, 1916. Reversing.-To maintain the same order of firing for both directions of running, the engine cylinders are arranged in units having separate cam shafts rotating always in the same direction, each unit having its cranks in one plane. In the arrangement shown in Fig. 1, the units B, B<1> each comprise four cylinders and have separate cam shafts A, A<1> respectively. driven through bevel-gearing c, e<2>, e<1> from the crank-shaft. The wheels c, e<1> are loose on a shaft E which carries a dog e<4> and is moved axially to engage the dog with recesses e<3> in the wheels e, e<1>. The magnetos K are driven from the shaft F so as to rotate always in the same direction.
Patent GB-647307-A (GB)
Title: Improvements in or relating to variable resistors and potentiometers
IPC: H01C1/12
Filed: 1948-05-28
Abstract: 647,307. Resistance coatings and deposits ; variable contact resistances, combinations and sets of resistances. DOVE, F., SEDGFIELD, H. B., and SPERRY GYROSCOPE CO., Ltd. May 28, 1948, No. 14488. [Class 37] In a wire-wound rheostat or potentiometer the wiper or contact arm is made up of a plurality of spaced elements with tips or ends spaced along the resistance winding and resistance between adjacent tips equal to or larger than the inter-turn resistance of the winding., Fig. 2 shows one embodiment with V-shaped wires having tips 2 and depending from supporting frame 5 and interconnected through carbon strip sandwiched between clamping plates 8 and flexible pads 13. The assembly stages are given, Fig. 1 (not shown). A bus-bar 10 bridges the plates 8 and is connected to output lead 12. The frame 5 is secured to a tracking member as by slots 14 in such manner, Fig. 3, that the wires 1 are staggered relative to the direction of movement of the wiper over the resistance winding 15 and the tips 2 form a straight line. In use as a potentiometer if the wiper is moved by a small amount so that only one wiper element 1 changes its contact from one potentiometer track element to an adjacent one, the voltage step at the output terminal is only a fraction of the potentiometer inter-turn voltage. The resistance strips may be omitted and resistance material sprayed on the wires or on to the underside of the clamping plates 8.
Patent GB-1508644-A (GB)
Title: Overvoltage protection arrangement
IPC: H02H3/06
Filed: 1975-04-09
Abstract: 1508644 Overvoltage protection JERROLD ELECTRONICS CORP 9 April 1975 [23 Jan 1975] 14644/75 Heading H2K An overvoltage protection system for a load 36 energized via a transformer 30 from an A.C. source 10 comprises a threshold circuit 12-17 which, on detection of overvoltage, discharges a normally-charged capacitor 18, thereby opening a switch 29 in series with the transformer primary winding. The threshold circuit comprises two oppositely-poled Zener diodes 15, 17 which will trigger a triac 12 into conduction on occurrence of an overvoltage in either half cycle of the supply. The capacitor 18 is normally charged via a diode 19, but when discharged by triac 12 it switches off a second triac 24 which in turn prevents a main triac 29 from conducting. The capacitor recharges to restore normal operation as soon as the overvoltage disappears. Preferably some provision is made to supply a reduced amount of power to the load while the switch 29 is open. In Fig. 2 an auxiliary triac 37 conducts when the main triac 29 is blocked to bring into use some additional primary winding turns 34. In other embodiments (Figs. 3A, 4A, not shown) a normally-ineffective connection between the transformer primary 31 and the bridge rectifier 33 supplying the load is brought into use by the blocking of triac 29 to by-pass the transformer and convert the bridge 33 into a half-wave rectifier. The connection may include a voltage-dropping device.
Patent GB-642628-A (GB)
Title: A circuit breaker with magnetic blow-out for alternating current
IPC: H01H9/44
Filed: 1948-05-31
Abstract: 642,628. Arc rupturing in switches. CZECHOSLOVAK METAL & ENGINEERING WORKS, NATIONAL CORPORATION, and ZAJIC, V. May 31, 1948, No. 14689. Convention date, June 12, 1947. [Class 38(v)] In an alternating-current switch having an arc-shoot with deionizing plates (not shown), the field of a main blow-out magnet 9 is delayed in phase behind the field of an auxiliary magnet 3 to cause the straightening of the arc so that it engages all the plates simultaneously. The arc 17 drawn between contacts 1, 2 is initially blown along the arc horns 5, 6 by the magnet 3, the roots of the arc lagging behind the centre of the arc. The centre of the arc, as at 18, comes under the influence of the field of magnet 9 first, and at parts of the A.C. cycle, has its movement opposed by this main field, so that the arc roots may catch up with the centre of the arc so straightening the arc, as at 19. The phase delay of the main blow-out field may be provided by connecting an inductance in. series with the energizing winding of the magnet 9, by providing the magnet 9 with a short-circuited turn on its laminated core or pole shoe, or by the use of a solid core and solid pole shoes for the magnet 9.
Patent GB-220743-A (GB)
Title: Improvements in and relating to gramophone horns
IPC: G10K13/00
Filed: 1923-06-05
Abstract: 220,743. Barnett, H. T. June 5, 1923. 'Cases with internal horns.- In a cabinet gramophone having a paper horn, the smaller end of the horn D is passed over and secured by binding and/or cementing to the larger end of the tone-arm continuation B. The horn mav be made in known manner by building it up from layers of pasted segmental strips, using as a mould a wooden or metal horn. The paper horn may be cut through after its formation to facilitate removal from the mould, the cut being afterwards joined up, or a split horn may be used as the mould. The end of the paper horn may be slit longitudinally, and thereby temporarily widened to allow it to be passed over the end of the cast metal tube B. One or more layers of string or wire E may be wound round the joint, which may then be soaked with shellac varnish or the like. The cabinet A is made without a bottom, to improve the tone. Specification 208,580 is referred to.
Patent GB-1212259-A (GB)
Title: Poultry conveying mechanism
IPC: A22C21/00
Filed: 1968-03-27
Abstract: 1,212,259. Conveyers. STORK AMSTERDAM N.V. 27 March, 1968 [11 April, 1967], No. 14729/68. Heading B8A. An overhead conveyer includes carrier shackles 3 for killed poultry, each shackle having a projection 6 engageable by a guide rail 5 which limits the upward movement of the shackle. The rail 5 and a further guide 4 are spring urged into the normal positions shown but are movable when two or more shackles become entangled. Two auxiliary guides 16, 17 for the shackles are laterally displaceable in a support 18. For releasing poultry from the shackles, inclined rails 7, 8 are disposed so that, as a shackle moves towards a discharge point, legs of the poultry clamped in the shackle are urged upwardly by the rails 7, 8.
Patent GB-1376586-A (GB)
Title: Fasteners
IPC: F16B25/00
Filed: 1973-05-23
Abstract: 1376586 Self-tapping screws; rolling USM CORP 23 May 1973 [24 May 1972] 14732/74 Divided out of 1376585 Headings B3N and B3M A self-tapping threaded fastener comprises a cylindrical shank portion 12, a tapering workentering portion 16, a continuous thread formed on the work-entering portion and part of the shank portion, and a plurality of rows of thread forming lobes 30 superimposed on said thread over only the work-entering portion, one of said rows includes a lobe or lobes 30<SP>1</SP> which close to the junction of the shank portion and the workentering portion extend radially further from the longitudinal axis of the fastener than the distance from the axis to the crest of the thread on the shank portion. The fastener is formed by rolling between a primary and secondary die. Only the primary has lobe forming recesses whilst both dies have a rerolling section whereby after the lobes are formed the lobes on all but one row are rerolled to give the required construction.
Patent GB-1451302-A (GB)
Title: Cells for alkaline batteries
IPC: H01M50/538
Filed: 1975-04-10
Abstract: 1451302 Electrode connections for alkaline cells SANYO ELECTRIC CO Ltd 10 April 1975 [15 April 1974 29 Nov 1974] 14801/75 Heading H1B An alkaline cell comprises positive and negative electrodes 1, 2 separated by a separator 3, each electrode having a bare conductive portion 4 at opposite ends of the cell, and current collectors 5 provided with numerous projections which are welded to the conductive portions. The electrodes are made of a punched metal or woven wire carrier supporting sintered nickel powder impregnated with active material. Each current collector consists of an expanded metal plate, wire netting, woven wire or a punched metal plate made for example of iron. The projections on each collector enable the collectors to be spot welded at a number of points to the electrodes.
Patent GB-1022918-A (GB)
Title: A circuit arrangement for use in synchronizing the frequency of an oscillator with the frequency of an incoming signal
IPC: H03L7/10
Filed: 1964-04-09
Abstract: 1,022,918. Automatic frequency control system; automatic selectivity control. TELEFONAKTIEBOLAGET L. M. ERICSSON. April 9, 1964 [April 9, 1963], No. 14811/64. Headings H3A and H3Q. An automatic frequency control system comprises a variable frequency oscillator G, Fig. 2, a comparator K which compares the frequencies of the oscillator and of an incoming signal, two low-pass filter circuits F1 and F2 connecting the comparator output to the oscillator, and a control circuit A receiving output signals from the comparator and controlling the pass-band of filter F2 so that it is wide when the frequency difference is large and narrow when the difference is small. The filter F2 includes a capacitor C2 which is connected to earth through transistor T3 and capacitor C5, and the effective resistance of T3 is varied from a low value to a high value to vary the pass-band. The comparator K may be a modulator from which an output is passed through a high-pass filter Fk to a transistor T1 which acts as a half-wave rectifier. Each time T1 conducts T2 also conducts and charges C4. When C4 is charged T3 is cut-off and C2 is effectively open circuited. It is shown that the band width of F2 progressively decreases to a minimum as the frequency difference decreases.
Patent GB-1417583-A (GB)
Title: Lampholders
IPC: H01R33/46
Filed: 1972-03-29
Abstract: 1417583 Lampholder IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 6 March 1973 [29 March 1972] 14847/72 Heading H2E An earthable lampholder comprising bayonetslotted stepped metal shell 1, insulating insert 2 carrying spring-loaded pin contacts 11, and metal cap 3, includes earthing tab 22 struck from the wall of shell 1 which retains and prevents rotation of insert 2. Power connections are made to terminals secured by screws 14. The earth wire is clamped in terminal 24 on tab 22, the wire-end being visible from the front of the holder. An alternative embodiment comprises a batten holder in which a cylindrical part (Fig. 4, not shown) with outward rear-mounting flange replaces cap 3. An inward forward flange is shaped to receive the same insert 2 and earthing tab 22. Another embodiment of a "sign" holder omits the outward mounting flange. In both these embodiments the lamp-receiving shell and base may be integral or permanently joined, the insert being put in place from the rear. Alternative forms of earthing tab and terminal include a screw terminal block serving both purposes, and a split segmental tab in which a wire is wedged by pressure from the face of insert 2.
Patent GB-148761-A (GB)
Abstract: 148,761. Debauge, H. June 30, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Rotary converters; di-iving- arrangements. - An electrolytic cell is rotated by an electric motor, which also forms the generator of the electrolytic current. As shown, the annular cell A carries the field-magnet C. The cell and the armature E are rotated in opposite directions on ball bearings by means of differential gear 0, the pinions of which are mounted in stationary brackets. The motor and generator windings F, G may be wound in the same slots of the armature E, and connected to commutators I, K on opposite sides of the armature. The field-magnet windings may be in series or shunt with the armature windings. Alternating current of one or more phases may be used instead of direct current in the motor windings. Instead of rotary commutator brushes, stationary ones may be used in combination with slip rings.
Patent GB-561627-A (GB)
Title: Improvements in or relating to nuts, metal sockets, bushes and the like
IPC: F16B12/14
Filed: 1942-10-23
Abstract: 561,627. Nuts; bushes. HALL & KAY, Ltd., HALL, J. H., and HALL, S. Oct. 23, 1942, No. 14880. [Class 89 (i)] Nuts, bushes and the like 8 to be permanently mounted in a panel 12 of soft metal such as lead or of wood, synthetic resin &c. to receive a screw or pin 17 entering from the edge, for example to secure a cover 16, are formed with a countersink head 14 and with the other end 9 hollowed out to facilitate setting to form a second head. The end 9 is serrated at 15 to provide means for preventing the nut from turning in the panel, as described in Specification 471,413. Both ends may be hollowed out, serrated and upset. A transverse hole 11 is tapped, if to receive a screw, or left plain for a pin. The nut &c. may be tubular. Specifications 348,631 and 409,458 are also referred to.
Patent GB-983097-A (GB)
Title: Sliver coiling mechanism
IPC: B65H67/04
Filed: 1961-04-25
Abstract: 983,097. Coiling and measuring sliver; stop-motions. WARNER & SWASEY CO. April 25, 1961 [May 12, 1960], No. 14880/61. Headings DID and D1F.  A sliver coiler mechanism comprises a support indexably rotatable about a vertical axis and mounting single can-carrying turntables rotatable with the respective cans about vertical axes spaced angularly about the support axis. A coiler head positioned above the support delivers sliver to a can mounted on one of the turntables which is in a loading position, and a pair of drive means respectively index the support when a predetermined amount of sliver has been delivered to the can from the head and rotates the turntable. The latter drive, Figs. 2-5 (not shown) is periodically and automatically reversed to change the direction of rotation of the turntable that is in loading position. In the machine described, the drive means for the support, Figs. 6-11 (not shown) includes a pair of heart-shaped cams, Fig. 8 (not shown), fixed in vertically spaced relation for rotation about a vertical axis and angularly displaced relatively to each other about such axis, and a mounting device rotatable about a vertical axis intermediate the support and cam axes and carrying vertically spaced sets of cam followers separately engaged by a cam. Control means operates automatically when a predetermined length of sliver has been coiled into a can for operatively connecting the drive means for the support to rotate the cans for indexing the support. When the support has been indexed sufficiently to position a turntable mounting an empty can beneath the coiler head, the drive means for the support is automatically disconnected. When the support is rotated in response to filling of the last can, a feeler arm engaging with sliver protruding from the first-filled can operates a switch which closes contacts to energize the coil of a control relay (and also de-energize a holding relay) thereby opening contacts to de-energize the coil of a motor contactor and thus arrest operation of the coiler head, Figs. 10 and 11 (not shown). The apparatus shown in Fig. 1 comprises a coiler 1, having 2 containing a gill box 2<SP>1</SP> delivering "combed" sliver through nip rolls 3 to a head 4 which coils through an opening in plate 41 into a can 5 mounted, as one of three, on a support 6 which moves, as described above, to displace a filled can and replace it with an empty can, the coiler head meanwhile continuing its operation so that a length of sliver hangs over the edge of the filled can and extends to the succeeding can. A measuring device or yardage counter responsive to the revolutions of the rolls 3 and an associated control switch are housed in a box 9. Column 8 and housing 8<SP>1</SP> accommodate drive mechanisms for the support and the turntable. The sequence of mechanical operations is controlled through a system of electric switches and contacts, solenoid-operated clutches, and relays represented in Fig. 12 (not shown).
Patent GB-180691-A (GB)
Title: Improvements in dobbies for looms
IPC: D03C13/00
Filed: 1922-05-26
Abstract: 180,691. Zackiewich, C. A. May 28, 1921, [Convention date]. Dobbies; pattern surfaces.- The healds of a loom are actuated by means of cords from grooved pulleys M, which are turned in one direction or the other by means of worms K on shafts I gearing with worm-wheels L. A dogclutch H sliding on each shaft is moved by a clutch-fork G into gear with either of two pinions J, J<1>, which continuously rotate, but in opposite directions, whereby the shaft I is turned in one direction or the other and the corresponding heald is accordingly raised or lowered. The forks G are controlled bv means of springs and rollers F actuated by cams E, which are driven intermittently by toothed gearing from a pattern cylinder comprising teeth disposed in variable number and spacing on discs removably keyed to a shaft, this shaft being given a part of a revolution by wormgearing for each revolution of the loom shaft. The shafts I are mounted in parallel relation in a tightly-enclosed casing, and have squared ends N for hand-actuation. According to the Specification as open to inspection under Sect. 91 (3) (a) the apparatus as a whole is driven by a chain. This subjectmatter does not appear in the Specification as accepted.
Patent GB-192014-A (GB)
Title: Collapsible tube with spring closure
IPC: B65D47/20
Filed: 1922-05-26
Abstract: 192,014. Kalb, W. May 26, 1922. Stoppers with valves.- Relates to collapsable tubes with h spring - controlled valves, in which pressure on the contents opens the valve. The head c of the tube a carries a conical closing member d to the lower end of which spring arms e are attached. The free ends i of the springs press upon annular shoulders s in the inside of the tube head and normally retain the valve in the closed position. The tube mouth is formed with a sharp edge held in position by ridge supports h. A ball, pyramidal, or cylindrical valve may be employed, and the springs may be covered by lead, tin, varnish, &c.
Patent GB-496060-A (GB)
Title: Floorwaxer
IPC: A47L13/31
Filed: 1937-05-29
Abstract: 496,060. Floor waxer and polisher. FUHRMEISTER, W. May 29, 1937, No. 14929. [Class 19] In a floor waxing and polishing device, wax is forced from a cylindrical container 1 through holes 4, 5 on to a felt pad 9 by means of a plunger 15 rotatably secured to the handle 17 by a rivet or screw 20. A polishing pad 26 is engageable over the pad 9 when desired. The bottom of the container comprises relatively rotatable plates 2, 3 with holes 4, 5 to regulate the amount of wax forced into a chamber 12 and thence by ducts 13 to holes 14 in the pad 9. The pad is secured at its centre to the plates 2, 3. The plunger 15 can be held in inoperative position by spring pins 23.
Patent GB-1001197-A (GB)
Title: A novel steroid compound and its formation
IPC: C07C49/613
Filed: 1962-05-08
Abstract: The invention comprises 3-chloro-19-nor-4,5-seco-pregna-2,9-diene-5,20-dione and a process for the preparation thereof in which a 5-enamino - 19 - nor - des - A - pregna - 5(10),9(11)-dien-20-one having the formula: <FORM:1001197/C2/1> (where R and R1, which may be the same or different, each represents a lower alkyl group having 1-6 carbon atoms or they together with the N-atom constitute a substituted or unsubstituted nitrogen- or nitrogen- and-oxygen-containing heterocyclic ring system) is condensed with a 1 - halo - 3 - chloro - 2 -butene to form the desired compound.  Preferably the reaction is effected with 1,3-dichloro-2-butene in the presence of potassium iodide. Specification 1,001,196 also is referred to.
Patent GB-237072-A (GB)
Title: A process for the aluminum plating of spooled metal bands and other elongated metal bodies of any section
IPC: B23K20/233
Filed: 1924-06-20
Abstract: 237,072. Jordan, F. June 20, 1924. Rods and bars; compound forms.-Iron, zinc, copper, and other spooled metal bands and other elongated metal bodies are plated with aluminium bands &c. from separate spools, heating and then welding by hot rolling, thus avoiding buckling due to the different extension of the two bands. In one form, an iron band heated to a temperature not exceeding the oxidation temperature viz, about 350‹ C., and an aluminium band of equal width and heated to the same temperature are drawn from separate spools to the rolling mill where they are united, and then again spooled and finally welded by rolling again at 550‹ C. In joining a thin to a thicker band the thicker band need only be heated for the first operation, the thinner band absorbing the heat required from the thicker band. The plating may be effected in a single operation if the aluminium band is heated beyond 350‹ C., preferably to 550‹ C., the iron band in this case being heated to 350‹ C. In welding an aluminium 'band to a zinc band, the zinc band is heated to 250‹ C. and the aluminium band to 450‹ C. prior to welding in a single operation.