baber/WOPTO huggingface dataset:
Patent GB-691693-A (GB)
Title: Fluid-pressure operated servo-motor for controlling the position of implements carried by a tractor
IPC: A01B63/111
Filed: 1950-08-18
Abstract: 691,693. Agricultural implements. MORGEN, A. L. A. Aug. 18, 1950 [Sept. 14, 1949], No. 20532/50. Class 6(i) [Also in Group XXIX] A hydraulic servomotor for adjusting the working depth 'of an agricultural implement O, Fig. 1, mounted on a tractor T, comprises a jack piston 4, Fig. 2, slidable in a cylinder 3 continuously fed with pressure liquid through a line 2, a small piston 9 slidable in an axial bore 4a in the piston 4 and urged outwardly therefrom by a spring 10, and a ball-ended rod 8 operablyconnected to the implement O and abutting an enlarged head 9a of the piston 9 engageable with a recess 14 in the piston 4. The piston 4 is provided with a rightangled duct 5 connecting the closed end of the cylinder 3 with exhaust, whilst -the piston 9 is provided with a transverse duct 11 which when its head 9a seats in the recess 14 allows free passage of liquid through the duct 5. The working depth of the implement O is normally adjusted by movement of a key 7 slidable in a slot 6 as described in Specification 667,660, [Group XXIX]. When the tractor operates over level ground, the rod 8 due to the weight of the implement is urged in the direction F, the duct 5 being uninterrupted and the implement remaining at its adjusted depth. When the tractor operates over uneven ground, e.g. encounters a depression as shewn in Fig. 1, the implement is raised with respect to the tractor on the trough of the depression being reached and the rod 8, through distortion of the linkage Q, moves in a direction F. The spring 10 then urges-the piston 9 outwards to obturate the duct 5; to be followed by the piston 4 consequent upon the build up of pressure in the cylinder 3 thus providing a continuous abutment for the rod 8 and so preventing "digging-in" of the implement. A pair of diametrically opposite grooves 15 may be formed in the piston 9 to provide a by-pass passage when the duct 5 is masked by the piston 9 to prevent an undue rise in pressure in the cylinder 3. Specification 660,841 also is referred to.
Patent GB-531975-A (GB)
Title: Improvements in or relating to seats, particularly vehicle seats
IPC: B60N2/70
Filed: 1939-07-14
Abstract: 531,975. Seats. WEYMANN'S MOTOR BODIES (1925), Ltd., and SKEATS, R. G. July 14, 1939, No. 20574. [Class 52 (ii)] A seat is provided with a removable upholstered back section 21 attached to the frame by sliding bolts 23, 24 mounted either as shown on the back section and engaging bolt holes in the frame, or mounted on the frame and engaging holes in the removable section. The upholstered back section carries a rib 22, Fig. 2, engaging under a channel 20 supported by the tubular side members of a seat and carries a rotatable plate 26 to which are pivoted slidable bolts 23, 24 engaging holes in the sides of the seat. The bolts are withdrawn by a key fitting a projection on the plate 26 a spring 33 holding them normally in the extended position. Lateral ears 31, 32 on the back open up the front of the side members of the seat in order to locate bolts correctly.
Patent GB-864595-A (GB)
Title: Improvements in and relating to rear drive chassis construction
IPC: B60K5/00
Filed: 1959-06-16
Abstract: 864,595. ' Vehicle frames. ELECKTROMASCHINENBAU FULDA G.m.b.H. June 16, 1959 [July 9, 1958], No. 20596/59. Classes 79(3) and 79(4). A motor vehicle has a rectangular tubular frame 1 with its front portion fixed to a central tubular stub 6 secured to a cross beam 5 carrying the pedals. A transverse leaf spring 7 is also secured to the stub 6 and is provided with brackets 8 to support the wheel hubs 17 and coil springs 9 having their upper ends attached to the mudguards 3. The steering bolts 18 are mounted forwardly of the wheel axles which are secured' to the brake drums 16. The engine 2, a chain drive and the rear wheels are carried by a beam 13 connected by leaf springs 14 to plates 15 on the frame. A coil spring 9 is interposed between the frame and the engine assembly which is enclosed by a vertical plate and a raised floor portion provided with a lockable opening.
Patent GB-299916-A (GB)
Title: Improvements in telephone and like signalling systems
IPC: H04B3/20
Filed: 1927-08-05
Abstract: 299,916. Standard Telephones & Cables, Ltd., (Western Electric Co., Inc.). Aug. 5, 1927. Inverting and transposing frequencies of telephone currents; twoway repeating systems.-In a fourwire repeating circuit, a single oneway device such as a scrambler is connected up for transmission in both directions by speech-controlled relays. In the arrangement shown, speech incoming from the circuit 26 (connected for example to a radio receiver) passes through an amplifier to the scrambler 22 and thence through further amplifiers to the line L. A delay network 28 prevents the speech from reaching the hybrid coil until the echo suppressing relay 15 has pulled up. Singing of the radio side is prevented by the back contact of relay 30 and of the other side by that of relay 31. Speech in the other direction energizes relays 16, 30, 31, 32 and passes through the scrambler 22 and amplifier 23 to the circuit 25 connected for example to a radio transmitter. Delay networks 19, 100 prevent these currents from passing to circuit 9 before relay 16 pulls up, and relay 32 prevents the radio side from singing. Construction of scrambler. Speech incoming from 26 is divided by filters F<A> - - F<D> into sub-bands which are modulated to bring them to a common frequency level in modulators M<A> - - MD. The resulting subbands are then led through key switches which change the relative positions of the sub-bands in any desired manner to de-modulators DM<A> - - DM<D> which convert them into four sub-bands having the same frequency limits as the original sub-bands with or without inversion of the frequencies within the sub-band. It will be seen that these scrambled currents can be converted into intelligible speech by passing through a scrambler of identical construction but with the key switches set in a complementary manner as indicated by the dotted lines.
Patent GB-1478238-A (GB)
Title: Preparation of sterile culture media
IPC: C12Q1/04
Filed: 1975-05-15
Abstract: 1478238 Preparation of sterile culture media ISORAD ISOTOPES & RADIATION ENTERPRISES Ltd and STATE OF ISRAEL REPRESENTED BY THE ATOMIC ENERGY COMMISSION 15 May 1975 [17 May 1974] 20700/75 Heading C6F In a process for preparing by ionizing irradiation a sterile culture medium substantially biologically equivalent to the untreated culture medium, the culture medium is first augmented with sufficient quantities of any components which are partially destroyed by the irradiation e.g. indicators and vitamins, or with radio-protectors. Catalase may additionally be included to prevent the formation of toxic degradation products. The irradiation may be gamma radiation at a dose of 0À5 to 2À5 Mrad, x-rays or electron beams of suitable intensity. The medium may be poured into plastics Petri dishes and these packaged in polyethylene sleeves prior to the treatment. Examples disclose (1) triple sugar iron agar with additional phenol red indicator, (2) Mueller Hinton agar with catalase and an increased content of agar, (3 and 4) fluid thioglycollate medium containing additional thioglycollate or cysteine, (5) MacConkey agar with augmented neutral red indicator and containing additionally thioglycollate or cysteine, (6) a lactose agar medium with augmented bromothymol blue indicator and containing additionally thioglycollate or cysteamine, and (8) tryptose agar with an increased content of agar. Example 7 discloses a plastics slide coated on its two sides with the modified agar media of Examples 5 and 6, respectively.
Patent GB-1397104-A (GB)
Title: Seed dispensers for planters
IPC: A01C7/04
Filed: 1972-05-24
Abstract: 1397104 Pneumatic seed dispensers INTERNATIONAL HARVESTER CO 24 May 1972 [24 May 1971] 20702/72 Heading AID A pneumatic, rotary seed dispenser for planting machines comprises a rotatable seed selector drum 34 which is supplied with low pressure, high volume air, via a duct 45, from a fan unit 23 and with seed, via a chute 51, from a hopper 20 which is connected via a pipe 67 to the drum 34 so that air pressure in the hopper 20 is equal to that in the drum 34 and hence facilitates the flow of seed to the drum. The drum 34 has a peripheral wall 35 having axially spaced rows of circumferentially spaced, internally bevelled apertures 36 which, due to the pressure differential across these apertures, carry seeds upwards, until they are adjacent seed discharge tubes 54. At this location a series of rubber cut off rollers 55 engage the drum's exterior surface to close the apertures 36 and eliminate the pressure differential so that the seeds pass into the tubes 54 and down to associated seed drills (not shown). The drum 34 comprises a rear wall 37 fixed to the peripheral wall 35 and the forward edge of wall 35 revolves against a stationary wall 25 with sealing means therebetween. A baffle is fitted in the duct 45 to regulate the air flow and the cover 21 of the hopper is provided with an air tight seal. The fan unit 23 is driven by the p.t.o. of a towing vehicle and the selector drum is driven off one of the planting machine's ground wheels (not shown) in the opposite direction to that of the fan. An air pressure gauge 76 is mounted on the hopper 20 by which the pressure therein can be observed and monitored.
Patent GB-441753-A (GB)
Title: Method of manufacturing metallic sodium
IPC: C25C1/02
Filed: 1935-07-20
Abstract: A solution of sodium in liquid ammonia obtained by an electrolytic process is withdrawn from the cell and the ammonia evaporated off leaving sodium having a bright metallic lustre. The sodium may be separated from any contamination of sodium chloride by fusion.
Patent GB-1558549-A (GB)
Title: Apparatus for chopping fruit vegetables and other food stuffs
IPC: B26D3/26
Filed: 1978-05-19
Abstract: The apparatus has a pressing knob (12) with cutters (27) and a hood-shaped piece (10) which is slid over the material to be comminuted. By actuation of the pressing knob (12) against the pressure of a spring (13), a displaceable piece (15) bearing the cutters (27) is pressed downwards into the material to be cut and rotated at the same time. In order to ensure forcible rotation of the displaceable cutter piece (15, 27), two rows of guiding grooves for tap-like projections on the displaceable cutter piece (15, 27) are provided in the hood-shaped piece (10). <IMAGE>
Patent GB-1104558-A (GB)
Title: A tractor
IPC: B62D49/06
Filed: 1966-05-11
Abstract: 1,104,558. Motor vehicles. DEERE & CO. 11 May, 1966 [10 Jan., 1966], No. 20907/66. Headings B7D and B7H. In a tractor having a clutch and a fore-and-aft movable steering arm 44, a housing 22 is internally compartmented to provide compartments 46, 48, 50 containing respectively the clutch, a cross-shaft 70 for the arm 44 and a shaft 66 extending rearwardly from the clutch, the arm 44 being separated from the clutch by a wall 78. The steering wheel operates an hydraulic mechanism including a piston 104 and cylinder 102 to rock the shaft 70 through a link 98 and the arm 44 is connected to the steerable front wheels by means of a drag link 40.
Patent GB-573639-A (GB)
Title: Improvements in and relating to coil winding machines
IPC: H01F41/08
Filed: 1943-12-14
Abstract: 573,639. Making toroidal coils. RAWLINGS, J. H., and AUTOMATIC COIL WINDER & ELECTRICAL EQUIPMENT CO., Ltd. Dec. 14, 1943, No. 20932. [Class 83 (iv)] In a toroidal coil winding machine of the kind comprising a rotating gapped ring or other hollow member 10 carrying a wire bobbin 11 or forming a magazine for a wire 12, and arranged to pass at one point through the inside of an annular core 14, the wire being drawn off the bobbin 11 and laid about the core by a winding member 13 carried by the member 10 and the core being rotated about its own axis, there is provided between the winding member and the point at which the core is drawn off the magazine or bobbin a slidable tensionmaintaining member 21' co-operating with a fixed cam 30 so as to take up slack on the wire caused by the shape of the core. The member 21 which is furnished with a leather &c. insert 22 is carried by a spring-pressed plunger 20 mounted on the member 10.
Patent GB-221508-A (GB)
Title: Improvements in the manufacture of gelatinous compositions for use in the reproduction of documents and drawings
IPC: G03F7/14
Filed: 1924-09-04
Abstract: 221,508. Dorel, J. Sept. 4, 1923, [Convention date]. Printing-surfaces.-Relates to gelatinous compositions for use in the process of copying drawings in which an unwashed blue print of the drawing is applied to the composition to render it capable of taking ink on the lines of the drawing, and consists in replacing the usual ferrous sulphate of the composition by a substance which is unaffected by air and light and which will react with the blue print, such as the sulphates of nickel, zinc, manganese, cobalt, and copper. In order to render the inked design more clearly visible, a white substance such as zinc oxide, whitening, alumina, or bismuth oxy-chloride, carbonate, or nitrate may be incorporated with the gelatine. A suitable composition consists of 1 kilo of gelatine, 4 litres of water, 100 grammes of nickel sulphate, 150 grammes of zinc oxide, and 150 cubic centimetres of glycerine. These proportions are also suitable if the other sulphates referred to are employed instead of nickel sulphate, except in the case. of copper sulphate, of which 15 grammes is sufficient. Instead of incorporating the reacting substance with the gelatine, it may be applied to a sheet of gelatine as a surface, coating from a solution such as a solution of 25 grammes of nickel sulphate or 4 grammes of copper sulphate in a litre of water. The Specification as open to inspection under Sect. 91 (3) (a) states also that an ordinary gelatinous composition containing ferrous sulphate may have its action revived by treating its surface with a solution of ferrous sulphate. This subject-matter does not appear in the Specification as accepted.
Patent GB-1503949-A (GB)
Title: Word commencement detector for a data transmission system
IPC: H04L1/00
Filed: 1975-05-16
Abstract: 1503949 Data transmission MESSERSCHMITT - BÍLKOW - BLOHM GmbH 16 May 1975 [24 May 1974] 20975/75 Heading H4P A word commencement detector for use in a digital data transmission system in which multiple words are transmitted serially with adjacent words being separated by a predetermined number of bits constituting a word separation signal comprises: delay circuits 12 and 15 to which a received signal is supplied respectively on Channel I and Channel II; a first AND gate G1 to the inputs of which are applied the delayed signal from 12 and an inverted clock pulse signal on line 13; a second AND gate G11 which receives the delayed signal from 15 and a clock pulse signal on line 16; an XOR gate 10 to the inputs of which the outputs of gate G1 and G 11 are connected; and a counter 11 which counts the pulses of the inverted clock pulse signal during the time for which the XOR gate 10 gives an output signal, the reaching of a predetermined count indicating reception of a word separation signal. The gates G1 and G11 are preferably associated with respective bi-stable devices 14, 19 and 17, 18, and the way in which the circuit operates to detect the commencement of a word is described with reference to waveforms (1) to (11) (Fig. 2) not shown.
Patent GB-1475433-A (GB)
Title: Liquid crystal display device
IPC: G09F9/30
Filed: 1975-05-16
Abstract: 1475433 Coated products AMERICAN MICROSYSTEMS INC 16 May 1975 [10 Oct 1974] 20984/75 Heading B2E [Also in Division G2] Each of the plates 12, 14 of an electrooptic nematic liquid crystal "twist" cell comprises a glass substrate on one side of which is deposited in turn an electrode pattern 16, a continuous thin dielectric layer 26 and a continuous thin film 28 of material for causing an adjacent homogenous nematic alignment in a direction inclined to that at the other film 28. As particularly described, layer 26 is 100Š of SiO 3  and provides a uniform base for the layer 28, thereby avoiding imperfections in that layer and in the alignment of the liquid crystal layer 20, e.g. at electrode edges. Layer 28 may be 100 to 500Š of SiO thermally evaporated at a high angle of incidence (80‹); or a PVA or alkoxy silane film deposited form a solvent and oriented by rubbing during or after solvent removal. Linear polarising material 22, 24 may be applied to the other plate surfaces or the cell placed between polarises.
Patent GB-575639-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H03F1/50
Filed: 1943-12-14
Abstract: 575,639. Valve amplifying circuits. HADFIELD, B. M. Dec. 14, 1943, No. 20985. [Class 40 (v)] In a thermionic valve amplifier circuit, the phase displacement between the input and output is maintained substantially zero over the working frequency range by means of negative feedback. An impedance is provided in the cathode circuit having a ratio of susceptance to admittance equal to the product of the ratio of susceptance to admittance of the anode circuit impedance multiplied by the ratio of the sum of the grid-cathode mutual conductance and cathode circuit conductance to the grid-cathode mutual conductance at low frequencies. In the basic valve circuit (Fig. 1), the frequency range over which a given amplification may be maintained without exceeding a given phase-shaft is limited by the anodecathode capacity of the valve. It is shown that the phase-shift may be greatly decreased without reduction of either the frequency-range or the amplification, by the addition to the cathode circuit of admittance Ac comprising elements similar in form to those comprising the anode load admittance Aa and bearing a numerical relationship to them such that the ratio Ac/Aa is equal to Gc/g/g, where Gc is the conductive term of the admittance of the cathode circuit and g the mutual conductance of the valve from the grid to the cathode. In Fig. 4, the anode circuit admittance may comprise inductance La shunted with capacity Ka, both in series with resistance Ra and the whole shunted with capacity Ca. Corresponding elements Lc, Kc, Rc, Cc comprise the cathode circuit admittance, corresponding elements 'being so proportioned that the required condition is attained. The arrangement of Fig. 3 (not shown) is similar, but omitting the shunt - condensers Ka, Kc, while in Fig. 2 (not shown) the arrangement is that obtained by omitting also the inductances La, Lc. The improvement in phase and amplitude characteristics which may be obtained with this last arrangement is illustrated by the curves of Fig. 6 (not shown). The conductive term of the cathode circuit admittance (Gc) may be made equal to the mutual conductance g from grid to cathode, or at least their ratio should lie within the range 3 to 0.33. In Fig. 5 (not shown), a three-stage amplifier incorporates the invention in each stage, overall negative feedback being applied from the last anode through a suitable impedance on to a resistance in the first cathode circuit.
Patent GB-865156-A (GB)
Title: Improvements relating to receptacles
IPC: A47J43/22
Filed: 1957-07-03
Abstract: 865,156. Washing receptacles. LOUIS, R. M. R. G., and FOATELLI, P. C. A. July 3, 1957 [July 12, 1956], No. 21062/57. Class 138 (2). [Also in Groups I and XVII] A washing, rinsing or straining receptacle 1 for use in a sink 4 is open at its bottom and incorporates a removable reticulated partition 20, the base of the receptacle being in the form of a reversible stand 11 having legs 12 with feet 13 and forming a seal with the lower edge of the receptacle wall. The receptacle has handles 2 and brackets 15 adjustable on guide-rods 14 removably secured to the stand 11 so that the receptacle may be raised off the stand. The bottom edges have a rubber sheathing 6, which may be in the.form of an inflatable air chamber, and a flexible sheet 10, adhered to the stand 11, may lie between the receptacle and the stand 11. The sheathing 6 may be narrowed at its lower end or have a flange tapering inwardly of the receptacle, Figs. 3 and 4, respectively (not shown). The receptacle may be held down by springs, Fig. 2 (not shown), or by weights attached to it, or have external pockets to catch water overflowing from it. In Fig. 6 (not shown), the receptacle wall is flanged outwards at its lower end, fitted with a flexible lining and held within a ring carried by the stand. In other forms, Figs. 7-8 and 11 (not shown), the receptacle may be of polyethylene, be fixed to the stand by clamping-screws, and have adjustable legs; or it may be of plastics material having its lower rim as shown in Figs. 9 and 10 with or without a metal reinforcement in the plastics material; or the stand may have a discharge opening fitted with a plug, valve or grid ; or the receptacle may be flexible, of wire or plastics strips, and covered with an impermeable fabric.
Patent GB-1218000-A (GB)
Title: 0,3-phenylene-diamines and their use as electrophotographic materials
IPC: G03G5/06
Filed: 1969-04-24
Abstract: 1,218,000. Phenylene diamines. SCOTT PAPER CO. 24 April, 1969 [25 April, 1965], No. 21077/69. Heading C2C. [Also in Division H1] Novel compounds having formulµ in which Z is benzyl or substituted benzyl, R is 1,3 - phenylene optionally substituted, Z<SP>1</SP> is benzyl or substituted benzyl but has a different value from Z and alkyl is a C 1-6  alkyl group or cycloalkyl group with up to 6 carbon atoms, and in the case where there are four radicals Z, Z is not benzyl if R is 1,3-phenylene are prepared, (a) by reacting NH 2 -R-NH 2  with Z-X where X is halo, (b) by reacting ZHN-R-NHZ with Z<SP>1</SP>-X, (c) by reacting alkyl (H)N-R-N(H)- alkyl with Z-X or (d) by reacting with triethyl phosphate or diethyl sulphate to give a compound Z(ethyl)N-R-N(ethyl)Z.
Patent GB-910624-A (GB)
Title: Improvements in or relating to collapsible shelters
Inventor: NEUMARK OTTO WALTER
IPC: E04H15/38
Filed: 1960-06-16
Abstract: 910,624. Inflatable tent shelters; doors. FRANKENSTEIN & SONS (MANCHESTER) Ltd., P. Sept. 4, 1961 [June 16, 1960], No. 21125/60. Classes 20 (1) and 20 (3). A collapsible shelter for the protection of vehicles, aircraft, guns, searchlights personnel or other purposes comprises inflatable tubes 12 pivotally or hingedly connected together and to base members such as 15 which are secured at a distance apart less than the length of the tubes so that upon inflation they form, together with an envelope 11, a domed canopy. In Fig. 1 the tubes 12 are connected to spokes 13 pivoted on trunnions of the members 15 and inflation may be effected collectively through the trunnions and the spokes of these are hollow or alternatively the tubes may be individually inflated. In a modified base member 15a, Fig. 4, the tubes 12 are connected to fittings 21 having co-operating lugs 23, 24 which are connected together by pins 25 and to the base by a self-locking detachable pin 27. Individual inflation valves 22 are provided. In a further modified base 15b, Fig. 7, end fittings 21a straddle the member to which they are pivoted by pins 30. In alternative arrangements the base members may be replaced by a fabric or other connecting chamber or the arches may be directly connected together. If the interior is to be pressurized a flap 32, Fig. 1, may be used to form an air seal and if desired a ground-sheet may be attached to the lease members 15. Other unconnected inflatable tubes may be secured to the tubes 12 to provide self-erecting means. Camouflage netting may be placed over the collapsed shelter so as to be extended with the envelope 11. The shelter may be used as an airlock for an air-supported building 35 with its whole periphery on the ground, Fig. 10, or with half its periphery attached to the building.