baber/WOPTO huggingface dataset:
Patent GB-122818-A (GB)
Title: Improvements in or relating to Limiting Back-lash in Toothed Gearing.
Inventor: MAAG MAX
IPC: B23Q5/56
Filed: 1918-10-18
Abstract: 122,818. Maag, M. Jan. 31, 1918, [Convention date]. Worm-and-wheel gearing.-To eliminate back-lash from screw-and-nut or worm and wheel gearing which is employed to reciprocate a slide &c. 1, the main or standard spindle 4 carrying a screw 4<a> is geared by wheels 11, 12 to a second spindle 5 furnished with a screw 5<a> which tends to move the slide 1 faster than the screw 4<a> the difference of speed being absorbed by a. slipping clutch 15. With this arrangement, the screw 5<a> actually drives the slide and the screw 4<a> merely determines the extent of movement. Owing to backlash in the toothed wheels 11, 12, the screw 4<a> would, at the moment of reversal, tend to give the slide a motion which is not permitted by the screw 5<a>. To prevent jamming due to this cause, a coupling 6 with an amount of looseness or lost motion is provided in the spindle 4, or the driving wheels 11, 13 may be mounted on the spindle with key-ways allowing lost motion. Fig. 5 shows the application to two worms 4<a>, 5<a> driving a wheel 1. In a modification, the worms are parallel and drive two worm wheels mounted on the same spindle.
Patent GB-220288-A (GB)
Title: Improvements in the manufacture of artificial threads from viscose
IPC: D01F2/06
Filed: 1924-07-16
Abstract: Artificial silk, artificial straw, &c. of high lustre is obtained from an unripened viscose prepared from an unripened soda-cellulose by employing a coagulating-bath of mineral acid, without the addition of a salt, maintained at a temperature of about 10-15 DEG  C., and a spinning length of 1-2 metres.
Patent GB-1122320-A (GB)
Title: Improvements in couplings for mounting the cutters of rotary scythe mowers
IPC: A01D34/63
Filed: 1967-04-14
Abstract: 1,122,320. Rotary-scythe mowers. E. J. WOLF. 14 April, 1967 [6 Dec., 1966], No. 17135/67. Heading A1F. [Also in Division F2]. A rotary lawn mower has a friction slip coupling between its motor shaft and cutter 18 comprising a driven part 7 having a conical surface urged into engagement with a corresponding surface of a part 3 by spring discs 13 which yield on the cutter striking an obstacle, permitting the driven part 7 to tilt until it engages a friction brake ring 19.
Patent GB-320688-A (GB)
Title: Improvements in and relating to cases or cabinets for storing gramophone records and like or similar disc-like articles
IPC: A47B81/06
Filed: 1928-07-20
Abstract: 320,688. Catt, S. G., and Young, S. L. July 20, 1928. Divided on 320,674. Cabinets.-A cabinet for gramophone records is provided with filling-pieces whereby any of the compartments may be adapted for a smaller size of record than that for which they are constructed, the adaptor being provided with a movable piece through which the ejecting-device acts on the smaller record. The Figure shows the adaptor fitted to a cabinet such as that described in Specification 320,674. The adaptor consists of side pieces 2, 3 connected by a cross-piece 13 over which slides a slotted member 1 by means of which the ejector-lever 6 acts on the small record 11. The member 1 is curved in front to fit the record 11 and at the back to fit the cabinet unit, which is adapted for a large record. The member 1 is secured to the side-pieces 2, 3 by cords 14, 15 to ensure its acting centrally on the record 11. The pieces 2, 3 may be attached to the sides of the cabinet by scnew-eyes &c. 16.
Patent GB-421185-A (GB)
Title: Improvements in electrical switching devices for use upon vehicles and crafts, automatically operable on collision or overturning
IPC: H01H35/02
Filed: 1933-06-15
Abstract: 421,185. Gravity and inertia switches. SALMOND, H. M., Briarwood, Fareham, Hampshire. June 15, 1933, No. 17148. [Class 38 (v)] A switch for disabling the ignition circuits of vehicles and crafts on collision or overturning comprises a pendulum 26 which carries a weight 29 and is pivoted at 27 to a collar 24 rotatable on a spindle 23 carried by a cross piece 18 of a hollow circular spun metal base. A circular contact plate 25 is loosely mounted on the spindle 23 and is urged by a spring 23<a> against the pendulum. On collision the pendulum rotates and one of the cams 26a forces the plate 25 into engagement with a contact 30 to earth the high tension. The pendulum also carries two spring arms 31 which on the car overturning engage pins 32 connected to contact 30 to earth the high tension. The springs 31 have hooked ends so as to pass beyond the pins 32 to prevent automatic resetting when the car is righted.
Patent GB-404543-A (GB)
Title: Improvement in wrenches
IPC: B25B7/02
Filed: 1933-06-15
Abstract: 404,543. Pivoted - jaw wrenches. AKTIEBOLAGET SVENSKA STOTDAMPAREFABRIKEN, 81, Birgerjarlsgatan, Stockholm. June 15, 1933, No. 17165. Convention date, June 16, 1932. [Class 61 (iii).] A wrench comprises a jaw 1 with faces at 120‹ and a jaw member 2 adjustable by a worm 6 and provided with faces corresponding with those of the jaw 1, the face 9 being on the member 2 itself and the face 16 on a jaw 3 pivoted on a pin 4 and urged inwardly by a spring 5 such that on the backward stroke of the wrench the jaws slip over the corners of the nut 10.
Patent GB-1380125-A (GB)
Title: Abrasion resistant compositions
IPC: C04B35/563
Filed: 1972-04-13
Abstract: 1380125 Carbide-silicide compositions COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION 13 April 1972 [14 April 1971] 17188/72 Headings C7A and C7D An abrasion-resistant composition consists of 40 to 60% by volume of boron carbide dispersed in a matrix of molybdenum disilicide. The preferred method of forming articles involves mixing particulate boron carbide with the desired quantities of elemental molybdenum and silicon, and heating the mixture in a mould at 1500- 1650C to cause a reaction between the elements, a pressure of at least 6000 p.s.i. being applied to ensure uniform pressing, the mixture con-  tracting in volume as a result of the reaction. The compositions are particularly suited for use in nozzles, e.g. for sand or grit blasting.
Patent GB-981503-A (GB)
Title: Improved compositions for road surfacing
IPC: E01C7/26
Filed: 1962-05-04
Abstract: A road surfacing composition comprises a mixture of base material, a setting accelerator, and 10-30% of granulated slag, having a particle size of up to 3 mm., the mixture being coated with a hydrocarbon binder.  The base material may be sand, porphyry or crushed slag. The setting accelerator may be lime, calcium carbonate or gypsum.  The hydrocarbon binder may be tar or bitumen.
Patent GB-1110672-A (GB)
Title: Process for the production of structural elements from waste products of the soda industry
Inventor: RUDOLF FRANZ
IPC: C04B28/18
Filed: 1965-04-23
Abstract: Light-weight cement structural elements, particularly single-storey wall blocks, are produced from a mixture of lime granules obtained as waste products in the soda industry, a silica-containing material, water and a leavening agent, the lime granules having a free lime content of at least 8% by weight and constituting at least 70% by weight of the total solids. The mixture is hardened in a vertical mould with steam under pressure to give a product of low, uniform density.  The lime granules are described in Specification 1,099,773 and contain free lime, CaCO3 and di- and tri-calcium silicates and aluminates.  The silica-containing material may be quartz and the leavening agent aluminium powder.  An example specifies lime granules and quartz in the proportions 75%: 25% by weight, 30-40% by weight water based on the lime granules plus quartz, and 240 gm. aluminium powder per cubic metre.
Patent GB-545705-A (GB)
Title: Improvements in and relating to the control of battery charging in vehicle installations
IPC: H02J7/16
Filed: 1940-12-06
Abstract: 545,705. Charging batteries. STONE & CO., Ltd., J., CHILTON, A. H., and BOLTON C. J. H. Dec. 6, 1940, No. 17373. Drawings to Specification. [Class 38 (iv)] A thermostatic switch is supported in or on a battery so as to respond to the temperature in the electrolyte and is arranged to alter resistance in the circuit of a regulator coil, relay winding or overcharge switch to render it responsive to a lower voltage. Overcharging is thus prevented under working or atmospheric conditions which heat the battery and lower its full charge voltage. The switch is preferably enclosed in a sealed glass bulb in a perforated ebonite casing screwed into the battery top so as to depend into the electrolyte, or embedded in bitumen and clamped against the case of a cell, particularly the outlet case of an alkaline battery. The arrangements introduce a time lag in the action of the thermostat, which may cut out or short circuit part of an adjusting or swamping resistance in the circuit of a voltage regulator or relay coil.
Patent GB-228070-A (GB)
Title: Vents for moulders' flasks and core boxes
IPC: B22C7/06
Filed: 1923-11-27
Abstract: 228,070. Demmler, H. L. Nov. 27, 1923. Flasks; moulds; core-boxes; patterns.-Flasks &c. particularly intended for use with the moulding-machine described in Specification 227,968 are provided with perforations that will pass air or other compressing fluid used but will not pass sand. The perforations preferably take the form of minute holes 202 formed in plugs so inserted in holes in the parts that the face of the plug forms part of the moulding-surface.
Patent GB-666344-A (GB)
Title: Improvements in and relating to illuminating devices
IPC: F21V9/40
Filed: 1949-07-01
Abstract: 666.344. Changing signs. SMITH, M. BAKER-. July 3, 1950 [July 1, 1949], No. 17446/49. Class 3 (i). [Also in Group XI]. In an illuminating device for theatre, window or advertising displays, a casing is fitted at one end with adjustable lamps 1 illuminating a translucent screen 10 at the other end, there being additional lamps 9 mounted on continuously rotatable turntables 6 between the lamps 1 and screen 10, and shaped two or three-dimensional light obstructions arranged in the space 11 between the turntables 6 and screen 10. As shown, the lamps 1 are arranged in angularly adjustable lines or groups and each lamp may be provided with individual colour filter arrangements. The turntables 6 are tilted towards the screen 10 and each lamp 9 has a coloured dome, the turntables being rotatable in either direction at variable speeds by motors 7 below the floor 5 of the casing. Each lamp 1, 9 has individual dimming and switching arrangements. By varying the intensity, colour and number of the lamps 1, 9, the position of the lamps 1, the speed and direction of the turntables 6, and the number, position and shape of the light obstructions, a variety of luminous effects and patterns may be produced on the screen 10.
Patent GB-304558-A (GB)
Title: Light-screening device
IPC: F21V11/16
Filed: 1928-06-16
Abstract: 304,558. Mason, A. E. June 16, 1928. Addition to 294,059. No Patent granted (Sealing fee not paid). Anti-dazzle screens.-In an anti-dazzle or like screening device adapted to be clipped on to the windscreen of a vehicle, as described in the parent Specification, the fluid is caused to pass from the reservoir to the light-screening chamber, and to be returned to the reservoir, by means of suction or pressure. In the form shown, a cylindrical or other shaped reservoir 1 is provided with a supporting band 2, a cap 4 having an air opening 5 and carrying an internal baffle plate 6, and two tubular outlets 3 which are connected by tubes 9 to the bottoms of two light-screening chambers 8. Tubes 10 from the tops of the chambers 8 pass around the chambers and are brought out at the bases as at 11 to be connected to a junction piece 12. This is connected by a tube 13 to the bottom of a pump 15 which is provided with a two-part clip 29 for securing it to the steering column 28. The pump piston comprises two cup-leathers 21 or the like separated by a washer 23, and the piston rod 24 passes through a stuffing-box 19 on a cap 17 having an air aperture. 18. The lower end of the cylinder is fitted with a block 31 having oepnings 26 closable by a rubber or like washer 32 on a screwed plug 27 for adjusting the quantity of air in the lower end of the cylinder. In a modified arrangement, each light-screening chamber is provided with its own reservoir.
Patent GB-572161-A (GB)
Title: Supporting device for vacuum tubes
IPC: H01J19/36
Filed: 1943-10-22
Abstract: 572,161. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. Oct. 22, 1943, No. 17460. Convention date, June 24, 1942. [Class 39 (i)] [Also in Group XXXVI] A vacuum tube is detachably mounted on a support which has apertures for the entrance of cooling fluid and to permit the fluid to circulate through the recessed anode and spaces between fins thereon, the support also providing an electrical connection for the anode. In the form shown, two tubes, e.g. for a push-pull amplifier, are mounted by bayonet connections 42, 46 on the support 34 which forms part of the circuit to the anodes 25 and has apertures 45 enabling fluid entering at 35 to pass into recesses in the anodes, to circulate over the fins 29 and leave by the exit 32. Partitions 48 secured to earthing connectors 50 for the grid confine the fluid to the parts to be cooled.
Patent GB-466928-A (GB)
Title: Machines for effecting the joining of two or more superposed thicknesses of sheet material
IPC: B31B3/28
Filed: 1936-06-24
Abstract: 466,928. Paper &c. tubes. BUTLER, W. J., and CAMPBELL CONVEYORS, Ltd. June 24, 1936, No. 17512. [Class 99 (ii)] [Also in Groups VIII and XV] In joining two or more thicknesses of sheet material, e.g. paper, by punching spaced tongues which are pressed into corresponding apertures and moved relatively to engage the tongues positively with the apertures the thicknesses are automatically gripped and engaged. The tubular portion of a container for milk &c. is made by folding blanks 12 about a table 9, punching the overlapping edges with a multiple-tongued punch 24, the thicknesses to be joined are respectively held by a detent 27, and a clamp travelling along a rail 37, continued movement of such clamp after engagement of the punched parts and release of the detent 27 allowing them to be pressed between rollers 54, 55 and removed from the machine. The next blank is raised into position by arms 16<1> connected with a suction pipe 19 and folded by a wiper 21, &c. The movements are effected by cams &c. on a rotating shaft 7, through levers and springs &c. as shown.
Patent GB-548243-A (GB)
Title: Improvements relating to covers for pouring apertures of containers for liquids
IPC: B65D45/02
Filed: 1940-12-11
Abstract: 548,243. Covers for pouring apertures for containers for liquids. LAKEY, R. P., and INGS, G. M. Dec. 11, 1940, No. 17535. [Classes 66 and 125 (iii)]  A bottle or other container for liquids has its pouring opening covered by a member 17 containing a washer and carried by a hand lever 10 pivoted at 11 to a fitting carried by a lug 14 on a spring collar 15 which secures the collar to the vessel. A pair of springs 12 is pivoted on the members 10, 14.
Patent GB-951710-A (GB)
Title: Improvements in or relating to escapement control for typographical linecasting machines
IPC: E21B33/129
Filed: 1962-05-08
Abstract: 951,710. Type-bar-making machines. HARRIS-INTERTYPE Ltd. May 8, 1962 [May 8, 1961], No. 17589/62. Heading B6W. Escapements; record-strip control.-Escapement-actuating reeds 44, Figs. 1 and 4, are operated by levers 40 controlled by the tape reader mechanism, and the drive of the automatic unit 14 rotates a cam 16 which through linkage 54, 56, 62, 64, 66 oscillates a bar 68 to which is clamped a locking bail 28. The bail is rocked to allow upward movement of a selected reed, and then retained by a spring 72 to engage under a projection 74 of the operating lever, so preventing the descent of the reed and lever until the next escapement cycle has been initiated. Specifications 412,200, 415,798 and 747,233 are referred to.
Patent GB-653104-A (GB)
Title: Improvements in or relating to implement-carrying agricultural tractors
IPC: A01B63/10
Filed: 1948-07-01
Abstract: 653,104. Controlling agricultural tractors. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd. July 1, 1948, No. 17738. Convention date, Oct. 22, 1947. [Class 79 (v)] In or for an implement-carrying agricultural tractor means are provided operable by movement of the implement and adapted to prevent movement of the gear lever of the tractor into the reverse gear position while the implement is in its operative position. As shown rotatably mounted adjacent to the gear lever 38 on the tractor is a transverse shaft 43 carrying an arm 44 and a stop member 45, a spring 47 tending to urge the member 45 into a horizontal position, in which position the gear lever 38 is prevented from moving into its reverse position. Connected to the arm 44 is a spring tensioned chain 49 which is connected to a rod 35 which is moved when the implement, shown as a beet harvester comprising a topping unit 17 and a digger 20, is moved between its operative and inoperative position by a hydraulic device 30 actuated by the tractor. When the implement is moved into its inoperative position, the rod 35 is urged to the left in Fig. 1 and by means of a chain 49 the stop member 45 is moved anti-clockwise into a vertical position thus allowing the gear lever to be moved into its reverse position.
Patent GB-204142-A (GB)
Title: Improved tin can opener
IPC: B67B7/46
Filed: 1922-06-28
Abstract: 204,142. Clegg, W. H. June 28, 1922. Opening by cutting. -A device for cutting out the ends of cans comprises a wooden base b on which is mounted a guide column c of square section upon which are slidably mounted a guide plate e and a sliding bracket h carrying a pivoted handle g working in a slot in the guide plate. The bracket is adjustably secured to the column by means of a set-screw i and a spring j is interposed between the top of the bracket and the upper limb of the guide plate. The tin to be opened being placed on the base, the parts are adjusted until the V-shaped cutter f secured to the guide plate rests over the desired part of the end of the tin; the cut is then made by pressing down the handle g. After each cut the handle is raised and the tin turned as required. Specification 1818/73 is referred to.
Patent GB-389805-A (GB)
Title: Improvements in diesel-locomotives
IPC: B61C9/08
Filed: 1931-06-19
Abstract: 389,805. Internalcombustion engine locomotives. HUMBOLDT-DEUTZMOTOREN AKT.-GES., 149, Deutz-Mulheimerstrasse, Deutz, Cologne, Germany. June 19, 1931, No. 17800. Convention date, June 19, 1930. Void [Published under Sect. 91 of the Acts]. [Class 79 (i).] In a locomotive driven by a two-stroke-cycle Diesel engine d and having a main scavenging blower driven in accordance with the speed of the engine and a second blower k driven independently of the engine, the main blower g is arranged at a distance from the engine and is driven from an axle e which is not a driven axle. In the construction shown, the main blower is mounted on a radial or bogie truck f. The auxiliary blower k is driven by an engine i.
Patent GB-888894-A (GB)
Title: Improvements in or relating to pulse amplitude discriminating circuits
Inventor: CHAPLIN GEORGE BRIAN BARRIE
IPC: H03K9/00
Filed: 1959-05-26
Abstract: 888,894. Transistor pulse discriminating circuits. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 12, 1960 [May 26, 1959], No. 17884/59. Class 40(6). The threshold level of a pulse amplitude discriminator is controlled by feeding pulses of standard amplitude into the input, the resulting output being gated, rectified and used to provide a bias voltage to the discriminator so that it just passes pulses of standard amplitude. As shown, an avalanche transistor J3 is triggered by any pulses arriving at terminal 8 having an amplitude above a predetermined threshold value. The negative output pulses from J3 are passed via an emitter follower J4 to the output terminal 9. Standard amplitude pulses at 50 c/s. are provided by transistor J7. The output from these pulses is selected by the gating transistor J5 (rendered conductive by 50 c/s. pulses from TR2), rectified by a diode pump circuit comprising components D2, D3, C2, C3 and the resulting direct current, passed by the emitter follower J6 to control the threshold level of J3 so that standard amplitude pulses are just sufficient to trigger the discriminator. The standard pulses are eliminated from terminal 9 by means not shown. In Fig. 1 (not shown) the controlling bias is derived by rectifying the output of a blocking oscillator fed from the gating circuit and is used to control the gain of the first stage of a transistor amplifier preceding the discriminating trigger circuit.
Patent GB-240413-A (GB)
Title: Improvements in furnace grate bars
IPC: F23H17/12
Filed: 1925-07-13
Abstract: 240,413. Webster, H. J. Sept. 23, 1924, [Convention date]. Fire-bars of the kind described in Specification 216,358 have the fire-supporting faces provided with transverse and longitudinal depressions separated by flat portions, and slits extending through the bar along each of the transverse depressions. Transverse heat-conveying ribs of herring-bone shape depend from the under surface of the bar, and spacing projections are provided on each side of the bar. The front and rear walls 10, 11 of the fuel chamber have fire-bar supports 12, 13 across which are supported the fire-bars 14 having longitudinal strengthening ribs 16. Elongated semi-circular depressions 18 extend transversely across the bar and have slits 21 extending entirely across and through the upper part of the bar, while three longitudinal depressions 24 are arranged at right-angles to the depressions 18, leaving flat portions 17. The sides 19 of the bars are slightly bulged at the middle portions so as to leave an air space between adjacent bars. On the under surface of the bar between the slits 21 project herring-bone ribs 25 connecting the longitudinal ribs 16 these ribs have three points of flexure where the depressions 24 intersect them, so that they can take up expansion and contraction without cracking. The end ribs 25 are connected to the transverse flanged ends of the bar by central longitudinal supporting ribs 26, 27 so that the end ribs will not burn out if they be. come buried in ashes and deprived of air circulation.
Patent GB-169534-A (GB)
Title: Improvements in means for preventing the creeping of railroad rails
IPC: E01B13/02
Filed: 1920-06-30
Abstract: 169,534. Jackson, W. J. Mellersh-, (P. & M. Co.). June 30, 1920. Creeping of rails, preventing.-A creep-anchor comprises a clamp 13 extending under and around the rail flanges 12 and a separate member 14 which enables the clamp to be locked by a movement transverse to the rail. The member 14 is tapered transversely to the rail and presents a bearing-surface 14 of greater angularity than the rail flange. To prevent the member from slipping, the seating 15 may be provided as a groove, or two downward lugs 16 may hook over the edge of the rail flange, or both groove and lugs may be used. The clamp has jaws 17, 18 of unequal length, and a centre part 20 which would normally be above the baseline of the rail. The jaw 18 is preferably offset to provide a shoulder 18b, the surface 18<c> having a greater inclination than the surface 18<a>.
Patent GB-186436-A (GB)
Title: Improvements in and relating to gear teeth
IPC: F16H55/08
Filed: 1921-07-02
Abstract: 186,436. Bostock, F. J., and Moore, S. Bramley-. July 2, 1921. Toothed wheels; racks.- A form of gear teeth for wheels and racks is based upon a line of action M, N generated by a point M on the end of a swinging arm AM, the pivot point A of which is net stationary, as in cycloidal teeth, but moves, as the arm swings, either in a straight line A, A<3> as shown or in an arc of a circle. In some forms, this action produces an enveloping form of gear teeth with improved wearing qualities. B<3>N indicates a tooth face produced by this means.