baber/WOPTO huggingface dataset:
Patent GB-531236-A (GB)
Title: Improvements in, or relating to, cycle saddles
IPC: B62J1/02
Filed: 1939-09-07
Abstract: 531,236. Saddles. WRIGHT SADDLE CO., Ltd., and HOLLAND, C. A. Sept. 7, 1939, No. 25208. [Class 136 (iii)] In a cycle saddle of the type having a spring hammock top formed of front and rear springs connected by a waist-piece c, some or all of the rear springs are of Y-form, whereby sufficient spring support is provided towards the cantle plate a without causing congestion of the springs and lack of resiliency adjacent to the waistpiece c ; a stretcher bar g and its connection to the peak plate i and to a front supporting spring k are also improved. As shown, the rear springs comprise three straight springs b, one in the centre and two forming the outer springs on each side, and two Y-shaped springs d<SP>1</SP>, d<SP>2</SP> on either side of the central spring. The Y-shaped springs d<SP>1</SP>, d<SP>2</SP> may be made up of separate springs connected together by hooks and eyes d,<SP>3</SP> d<SP>4</SP>; or the diverging arms may be formed from a single length of wire, with a connecting loop to which the stem of the Y is hooked. The stretcher bar g is V-shaped, the rear ends being formed with eyes g' for connection to the cantle plate a, while the front end is bent upwards at g<SP>2</SP> to form a U-shaped bracket carrying a short peak plate i, which is folded' around the front of the bracket and provided with interval stops or indentations i<SP>1</SP> bearing against the back of the bracket. A front supporting spring k is anchored to the stretcher bar g by a bridge-plate j, the ends of which are bent up to engage the tops of the diverging arms of the stretcher bar.
Patent GB-841645-A (GB)
Title: Improvements relating to control means for textile winding, twisting or spinning frames
IPC: B65H59/38
Filed: 1957-08-09
Abstract: 841,645. Variable-speed drive for textilespindles or delivery means. BARMER MASCHINENFABRIK A. G., Aug. 9, 1957 [Aug. 10, 1956], No. 25210/57. Class 120(2). [Also in Group XXIV] Means for controlling the speed of rotation of winding bobbins or of the means delivering thread thereto in winding, twisting and spinning frames where the diameter of the package varies during winding, comprises a belt travelling over two rollers which is displaceable by a feeler according to the tension in a loop of the thread and a member rotating about an axis at an angle to the rotational axis of the rollers and in contact with the belt so as to impart to or derive from the rollers a speed which varies according to the part of the rotating member contacted by the belt. In Fig. 1 where the material is supplied at constant speed, a driven member 2 is in  contact with an elastic belt 5 passing over rollers 3, 4, the latter carrying a winding spindle 14. A pivoted lever 8 carries at one end a follower 12 in a loop of thread, and at the other two pins engaging the belt. As the lever pivots with the movement of the follower, the belt is moved to make contact with the rotating member 2 at points moving at different rotational speeds to vary the speed of the spindle. In a modification, one of the rollers may be driven and varying speeds imparted to a member similar to 2 in Fig. 1, which drives the supply means, the winding spindle being driven at constant speed. In either form, the rotary member 2 may be in the form of a cone or the end of a cylinder, and one or more weights may be provided on the lever to make it more sensitive.
Patent GB-750769-A (GB)
Title: Improvements in mechanical shovelling and loading apparatus
IPC: E02F9/20
Filed: 1954-09-01
Abstract: 750,769. Shovelling machines. TAYLOR & CO. (PROPRIETARY), Ltd., C. C. Sept. 1, 1954 [Sept. 9, 1953], No. 25352/54. Class 68(1) [Also in Group XXXI] The winch drum 10 actuating the hauling cable 6 of a rocker shovel (not shown), is driven through an epicyclic gear comprising a driven sun wheel 38, planet wheels 48, an annular gear 49 which is rotatably fast with drum 10, and a band brake 59 which is engagable with a brake drum 53 carried by the planet carrier 40, 45, by a, pedal (not shown), and linkage 76, 64, 62, 69, to vary the speed of rotation of the drum 10. The epicyclic gear is driven by a constant speed prime mover 11 through shafts 13, 23, 29 and reduction gearing 21, 22; 24, 25 and 27, 28; shaft 13 being adapted also to drive a wheel propulsion shaft 18 in forward and reverse directions through bevel gearing 16, 17, 20 and a clutch member 14 which is keyed to shaft 13 and is slidable therealong by a lever 15, 19.
Patent GB-912708-A (GB)
Title: Improved springs
IPC: B29C70/34
Filed: 1959-07-23
Abstract: 912,708. Fabrics composed of threads united by adhesives. July 23, 1959 [July 23, 1958], No. 25366/59. Class 140. [Also in Group XXXII] A flat reinforced plastic spring (Fig. 2) comprises a longitudinal core 10a of layers of parallel contiguous resin-bonded glass filaments with one or more similar transverse layers 24, 26 bonded on to both of the broad surfaces of the core. Thin longitudinal layers 16a, 18a may be bonded on to the surface to increase abrasion and fatigue resistance and fixing holes 28 provided. The springs are sawn or cut to size from panels made by laying up a stack 10 of layers of longitudinal glass filaments, adding transverse cross-wraps 12, 14 and longitudinal surface layers 16, 18 and bonding them together with heat and pressure with a thermo-setting resinous compound.
Patent GB-389501-A (GB)
Title: Improvements in and relating to spring loaded quick operating valves
IPC: F16K31/524
Filed: 1931-09-11
Abstract: 389,501. Nozzle valves. RISBRIDGER, W. A. and RISBRIDGER, J. A., Elmhurst, Bletchingley, Surrey. Sept. 11, 1931, No. 25463. [Classes 69 (iii) and 135.] A manuallyoperated lever valve arrangement, more particularly for controlling precisely the delivery of petrol from a nozzle, comprises a main valve 6 and a centrally disposed subsidiary valve 8, each with its own loading spring 7 and 9 respectively, and a spring-loaded outflow check valve 20 which remains closed to prevent delivery of liquid until a given head or pressure is reached.
Patent GB-1144115-A (GB)
Title: A carton forming and filling machine including a carton transporting carrier
Inventor: GARTIN JOHN LEAMON
IPC: B31B50/02
Filed: 1967-06-02
Abstract: 1,144,115. Packaging; endless conveyers. FMC. CORP. 2 June, 1967 [8 July, 1966], No. 25469/67. Headings B8A and B8C. An apparatus for holding cartons in a fully erected position while they are filled and sealed, has carriers 20 with two adjacent walls and a gate 26 that pivots between a horizontal open position and an upright position to clamp the carton, the carriers being mounted on a conveyer 22. The cartons are introduced two at a time into two adjacent carriers by transfer mechanisms 28, 30 (no details given). Attached to a stationary post 25a are cam means, (92), Fig. 2 (not shown) to move arms 80 by rods 81, 82 away from a stop 89 into the path of a trip lever 64. Contact with the lever closes the gates 26 to hold the cartons erect. Two cam means, arranged at different heights to operate the rods 81, 82 which are of different lengths, allow two gates to be closed simultaneously. The trip lever 64 is connected to an overcentre device Fig. 9 (not shown). When a carton is not present in the carrier, the gate 26 rests on the edge of the wall 50. A device, Fig. 12, for ejecting a filled, sealed carton C from a carrier 20 comprises a triangular shaped cam 120 (shown in plan) that opens the gates in succession, and deflecting fingers 122 each having a roller 124 that pushes a carton C clear of a projection 52 enabling stationary guides 114, 116 to urge it on to the discharge conveyer 34.
Patent GB-442420-A (GB)
Title: Improvements in draught systems for boiler installations
IPC: F23L1/02
Filed: 1935-09-13
Abstract: 442,420. Forced draught systems. ERITH'S ENGINEERING CO., Ltd., and FERGUSON, A. W. B., 32, Farringdon Street, London. Sept. 13, 1935, No. 25508. [Class 51 (i)] A forced-draught system for boiler furnaces comprises a closed stokehold in which air is maintained under pressure and from which air to be supplied to the fuel bed is boosted to a higher pressure before being delivered beneath the grate to compensate for the loss of pressure incurred in its passage through the fuel bed and to bring the pressure in the combustion chamber to that existing in the stokehold.
Patent GB-690242-A (GB)
Title: Improvements in and relating to photographic roll film cameras
Inventor: RICHARTZ PAUL J M
IPC: G03B17/42
Filed: 1950-10-19
Abstract: 690,242. Photographic roll-film cameras. BOLSEY, J. Oct. 19, 1950, No. 25536/50. Class 98 (i). In a roll-film camera having mechanism for winding on a predetermined length of film at each operation and provided with a shutter operating lever which is movable against spring action from a shutter setting to a shutter releasing position, a spring-urged blockng member adapted to abut the lever is located after an exposure in the path of the lever to prevent its return to the setting position until means actuated by operation of the film winding mechanism moves the blocking member clear of the shutter operating lever. As shown, the shutter is carried by a slidable lens barrel and has a single operating member 16 manually movable anti-clockwise about the optical axis from the set position shown against a returnspring to a shutter-releasing position. On thus making an exposure, a spring-urged piston 19 projects out of the camera body and prevents return of the member 16 to the setting position. To wind the film, a knob 30 is pulled outwards, whereby a groove in the shaft 28 in which engages a leaf-spring 41 is moved clear of the spring 41, which is then engaged by the shaft and moved clear of a recess 45 in the disc 46 which rotates with a sprocket 31 driven by the film, and the knob is then turned to rotate the film take-up spool, the knob being returned inwardly during this. The sprocket 31 in turn drives a shaft 33 through a spring 32 surrounding and gripping the shaft as one end of the spring is rotated by the sprocket. When one film frame has been wound over the latch 44 re-engages the recess 45 and locks the film wind, and also a pin 37 on the shaft 33 strikes and moves clockwise a lug 38 on a pivoted lever 25 having a pin 23 on an arm 24 engaging in a hole 22 in the piston 19 so retracting the end of the piston out of the path of the shutter operating lever which then returns to the setting position. Eccentrically-mounted on the shaft 33 is a pivot 52 for a driving pawl 51, which is urged against a ratchet-wheel 48 by a spring 54. On each revolution of the shaft 33 the pawl 51 rotates the wheel 48 one tooth and hence the counter disc 50 one place, backward movement of the disc 50 being prevented by a ratchet pawl 55 engaging the wheel 48. If it is desired to rewind the film on to the supply spool, the rewind knob on this spool shaft is rotated, when the sprocket 31 rotates without driving the shaft 33 since the spring is unwound by the sprocket and does not grip the shaft 33.
Patent GB-699993-A (GB)
Title: Improvements relating to checking or monitoring equipment for radio receivers and transmitters
IPC: H04B1/034
Filed: 1951-11-01
Abstract: 699,993. Testing radio sets; radio sets. MERLES, A. J. Nov. 1, 1951 (Dec. 19, 1950], No. 25604/51. Class 40 (v). A radio set A which may be a transmitter, receiver, or transceiver, is monitored by a portable testing set B which is connected to the radio set by a multiple cable 3 and plug-andsocket means 4, 5. Power supply for the testing set B is obtained from the radio set by leads 7 plugging into sockets 8. The cable 3 includes leads for transferring control of the radio set, if remotely controlled, to control by the testing set. A cable 9 connects the aerial terminals of the sets A, B. The test set B permits of measurement of currents and voltages in the various circuits of the radio set, and of the characteristics of that set. The radio set is supported on two slideways 36 and when fully engaged makes multiple plug contacts with sockets on the support connected to power supply leads and to remote control cables. The plug 4 for connecting up the testing set enters multiple sockets 5 on the lower part of the radio set.
Patent GB-1389555-A (GB)
Title: Static inverters
IPC: H02M7/48
Filed: 1972-06-01
Abstract: 1389555 Automatic frequency control WESTERN ELECTRIC CO 1 June 1972 [1 June 1971] 25608/72 Heading H3A [Also in Division G3] An inverter supplying a main bus is synchronized with the bus signal by controlling its output in accordance with measured orthogonal components of the inverter current and the detected voltage at the bus connection. In the system shown in Fig. 2, a bus 220 is supplied by a number of static inverters 210 each including a precision oscillator 200 operating at a frequency much higher than that of the bus 220, together with a feedback network for controlling the voltage phase, and frequency of the oscillator output. A device 204 measures real and reactive components of the inverter output current, defined as the phase and quadrature components with respect to the divided and phase-shifted output from the oscillator 200. The measured real component is supplied on line 234 to a summing circuit 207 which also receives an input from a circuit 205 which compares the sensed voltage at the bus connection with a reference voltage 206. The reactive current component on line 233 is fed to a summing circuit 208, and the resulting signal is used together with that from circuit 207 to produce sinusoidal weighting factors on lines 231, 239. The signal on line 231 controls a frequency divider and phase shifter 201 which adjusts the frequency and phase of the inverter output to synchronize with the bus signal. The output from circuit 201 passes to a summing circuit 209 where it is combined with the signal on line 239 to regulate the inverter output voltage. The signal then passes through an amplifier 202 and filter 203 which determines the phase angle of the inverter output impedance. The system may be analogue or digital, and details of a digital system are described, Fig. 3 (not shown). In this system, the inverter output is controlled using pulse width modulation and bidirectional counters.
Patent GB-777683-A (GB)
Title: Polyhydrophenanthrene compounds
IPC: C07D317/72
Filed: 1953-09-17
Abstract: The invention comprises compounds having the formul <FORM:0777683/IV(b)/1> <FORM:0777683/IV(b)/2> in which the 7-position is occupied either by a divalent group convertible to keto by acid hydrolysis, e.g. as cyclic ketal, or by a pair of univalent groups convertible to a single keto group by acid hydrolysis, e.g. a non-cyclic ketal, and compounds having the formul : <FORM:0777683/IV(b)/3> <FORM:0777683/IV(b)/4> in which the 7-position is occupied by a univalent group convertible to keto by acid hydrolysis, e.g. an enol ether, and in which formul  R represents hydroxy or keto and R1 represents an alkyl, aryl or aralkyl radical, and the corresponding 7-keto compounds, and the preparation of compounds having the formul  Ia, Ib, IIa, and IIb, by reducing with an alkali metal, an alkaline-earth metal, the aluminium hydride of an alkali or of an alkaline earth metal, e.g. lithium aluminium hydride, a 2-methallyl polyhydrophenanthrene compound having in the 1-position a substituent of the formula -CH2COOR0, in which R0 is a hydrogen atom or an alkyl, aryl or aralkyl radical to form the corresponding 1 - (2 - hydroxyethyl)-2-methallyl-polyhydrophenanthrene compound which may be converted to the sulphonic acid ester by means of an alkyl, aryl or aralkyl sulphonyl halide in the presence of a tertiary amine, e.g. pyridine.  Subsequently the hydroxy substituent at C-4 may be oxidized to the corresponding 4-keto compound by means of a chromic trioxide/pyridine complex in pyridine.  Examples describe the preparation of 2,4b-dimethyl - 1 - (2 - hydroxyethyl) - 2 - methallyl-4-hydroxy - 7 - ethylenedioxy - 1,2,3,4,4a,4b,5,6,7,8,10,10a - dodecahydrophenanthrene; the corresponding 2-tosyloxyethyl compound and 2,4b - dimethyl - 1 - (2 - p - toluenesulphonyloxyethyl) - 2 - methallyl - 4 - keto - 7 - ethylenedioxy - 1,2,3,4,4a,4b,5,6,7,8,10,10a - dodecahydrophenanthrene.  Specifications 763,208, 777,682 and 777,685 are referred to.
Patent GB-308151-A (GB)
Title: Improvements in and relating to wrenches
IPC: B25B13/12
Filed: 1928-09-07
Abstract: 308,151. Arbuckle, J. B., and Depfer, W. Sept, 7, 1928. Pivoted-jaw and sliding-jaw wrenches. - The toothed shank 2 of the jaw 3 of an adjustable wrench slides in the housing 1 between a central web 14 and cross members 18 and is locked in adjusted position by' means of a toothed block 20 held in engagement with the shank teeth 21 by a spring 24 encircling a bolt 22 screwed into the toothed block and actuated for disengaging the jaw by a fork-ended trigger 29 pivoted at 30 to a cap 25 screwed to the housing 1. The handle member 4 carrying the other jaw 5 is pivoted to the housing at 10 and is held out of contact with the walls 14, 17 of the housing by two leaf springs 15, 16. The inner corner of the jaw 5 is recessed to engage a rib 13 on the jaw shank 2 so as to bind thereon during operation, causing the two jaws to move together and proventing contact of the handle 4 with the housing wall 17.
Patent GB-1147644-A (GB)
Title: Improvements in semiconductor devices
Inventor: DAS MUKUNDA BEHARI
IPC: H01L29/76
Filed: 1965-06-18
Abstract: 1,147,644. Semi-conductor devices. ASSOCIATED SEMICONDUCTOR MFRS. Ltd. 2 June, 1966 [18 June, 1965], No. 25875/65. Heading H1K. An IGFET comprises a high resistivity substrate having a surface region of the same conductivity type and of lower resistivity extending between two regions of the opposite conductivity type which form the source and drain regions. The lower resistivity surface layer reduces the thickness, and thus the variation of the width, of the depletion layer surrounding the drain electrode where it merges with the channel, Fig. 2 (not shown). As shown, Fig. 1, an enhancement mode IGFET comprises a P-type epitaxial layer 2 grown on the surface of a high resistivity P-type silicon substrate 1, the dopant being boron in both cases. The epitaxial layer has a dopant concentration of one hundred times that of the substrate. A layer 5 of silicon dioxide is grown on the epitaxial layer 2 and is photomasked and etched, and phosphorus is diffused-in to form N+ type source and drain regions 4, 3. Aluminium gate, source and drain electrodes 6, 7, 8 are provided by evaporation through a mask.
Patent GB-1048976-A (GB)
Title: A high pressure apparatus
IPC: B01J3/06
Filed: 1963-04-26
Abstract: 1,048,976. Very high pressure apparatus. GENERAL ELECTRIC CO. April 26, 1963 [May 2, 1962; July 30, 1962], No. 25882/66. Heading B1X. In a very high pressure apparatus of the type in which oppositely disposed punches (15, 16) enter an annular member (11), (a) the ratio G/D of the gap G between the punches before the punches are moved inwardly to compress an object and the diameter D of the faces of the punches is less than 1.75, (b) the taper of the punches and annular member is such as to provide a space (12) converging inwardly which is filled by a correspondingly tapered gasket (19) which is coextensive with the tapered punch surface and (c) the slant length L of the gasket is such that L/G is greater than 1. As illustrated in Fig. 1, to which the numerals in brackets refer, the flat cylindrical object 20 to be compressed is surrounded by a spool shaped pryrophyllite sample holder 21 and is made up of three disc assemblies (Figs. 2 and 3, not shown). The upper and lower disc assemblies comprise larger segments 26, 28, of pyrophillite and smaller segments 27, 29 of graphite and the centre disc assembly comprises two pyrophyllite segments 30, 31, adjacent to a diametrical bar 32 of graphite to be converted to diamond, the arrangement being such that the graphite segments enable current to be conducted across the punches through the bar which is thereby heated. Fig. 5 (not shown) illustrates a suitable electric circuit whereby heating may be accomplished in 0.001-0.004 seconds. A further arrangement of the sample is illustrated in Fig. 4, (not shown) where upper and lower graphite discs 34, 35 lie on opposite sides of a flat pyrophyllite cylinder 36 having a central aperture 37 containing the graphite charge 38.
Patent GB-727506-A (GB)
Title: Improvements relating to torsion-bar springing arrangements
IPC: B60G11/20
Filed: 1952-10-15
Abstract: 727,506. Spring suspensions; torsion rods; resilient mountings. DAIMLER-BENZ AKT.- GES. Oct. 15, 1952 [Oct. 18, 1951], No. 25886/52. Classes 108 (2) and 108 (3). In a torsion-bar springing arrangement for a vehicle in which one end of the torsion-bar is articulated by means of a lever arm to a part partaking in the sprung movement of the wheel while the other end abuts against a part fixed to the vehicle frame, both ends of the torsion-bar are supported by means of resilient elements in bearings arranged on the frame, the resilient element at the end abutted against the frame having less resilience, in a plane transverse to the axis of the bar, than the element at the other end. In the arrangement shown, in which a half-axle 14 is sprung against a vehicle frame by a coil spring 15, a torsion bar spring 16 is mounted on the vehicle frame in rubber mountings 17 and 18 and is connected at one end to the half axle 14, through a lever arm 19, rod 20 and an arm 21. The other end of the torsion spring 16 bears against an adjustable thrust-member 24 through a lever arm 22 and roller 23. The mounting 17 is retained by parts 26 and 27 which are secured to a chassis part 29. The mounting 18 is relatively smaller and comprises a rubber bushing inserted between metal bushes 30 and 31 and is located on a transverse bearer 11. The rubber bushing may be precompressed and may be vulcanized to the bush 30 and/or to the bush 31. The torsion spring is retained against axial movement by a screw 33.