baber/WOPTO huggingface dataset:
Patent GB-846709-A (GB)
Title: Improvements in or relating to pit props
Inventor: LUTZ HERMANN
IPC: E21D15/36
Filed: 1956-11-07
Abstract: 846,709. Pit props. BECORIT GRUBENAUSBAU G.m.b.H. Nov. 7, 1956, No. 34027/56. Class 20(2) A telescopic pit prop comprises a jointed or flexible clamp supported at one side against the outer prop member and having inner surfaces substantially perpendicular to the rocking axis and adapted when the inner prop member moves inwards to move in a radial direction to grip the inner prop member. The clamp may comprise a rubber sleeve surrounding the inner prop member and jaws may be provided between the sleeve and the inner prop member or a number of turns of a cable or chain surrounds the inner prop member or friction jaws on this member. In a further embodiment the clamp comprises a fabric having diagonal threads. In Figs. 2, 3 the clamp comprises a jaw 5 which is long circumferentially and a short jaw 3 supported on the outer prop member 2 the jaws being connected together by links 4 having ball joint connections 9 with the jaws. When the prop telescopes under mine roof pressure the jaw 5 is carried down and due to the pivoting movement of the links 4 causes the jaws to clamp the inner member. The jaw 3 rests on a resilient member 6 so that if friction is high between the jaws and member 1 jaw 3 is carried down to compress the member 6 thus altering the angle of the links 4 and lessening the grip of the clamp which is thus maintained uniform with variation of friction due to coal dust &c. In a modification Fig. 4 (not shown) the two jaws are embraced and thus connected by a helical spring. In Fig. 6 (not shown) the clamp comprises four segments each a quarter of a circle and jointed together, one joint being supported against the outer prop member.
Patent GB-924768-A (GB)
Title: Improvements in or relating to the transmission of thrust to or from a reciprocatingplunger
Inventor: STEAD ALBERT HENRY
IPC: F04B9/14
Filed: 1960-10-05
Abstract: 924,768. Reciprocating pumps. SKYHI Ltd. Oct. 5, 1961 [Oct. 5, 1960], No. 34074/60. Drawings to Specification. Class 102(1). [Also in Group XXIV] A thrust pad is interposed between a piston and an actuating member, e.g. a swash plate or a lever. The pad has a flat surface engaging a flat surface at the end the piston and an opposite surface of outwardly convex arcuate form which engages in a correspondingly shaped recess in the actuating member.
Patent GB-1390581-A (GB)
Title: Process for producing 7-acylamino-3-methyl-3-cephem-4-carboxylic acids
IPC: B01J31/00
Filed: 1973-07-18
Abstract: 1390581 Cephalosporins TOYAMA CHEMICAL CO Ltd 18 July 1973 [1 Sept 1972] 34192/73 Heading C2C A process for producing 7-acylamino-3- methyl - 3 - cephem - 4 - carboxylic acid of the formula wherein R 1  represents a hydrogen atom, an alkyl, phenyl or phenyloxy group and R 4  represents a hydrogen atom, an alkyl group, halogen atom, azido group, amine group or amino group protected in the N-position, comprises heating 6-acylamino penicillanic acid ester S-oxides of formula wherein R 2  represents a hydrogen atom, alkyl group, a halogen atom, azido group or amino group protected in the N-position, R 3  represents an ester moiety and R 1  is as above, in the presence of a catalyst consisting of a mixture of acids and sulphides (see below) to obtain the 7 - acylamino - 3 - methyl - 3 - cephem - 4 carboxylic acid esters which are then de-esterified to give the desired product. A suitable acid for use as a catalyst component is an inorganic phosphoric acid, an organic phosphoric acid, an organic sulphonic acid, a mineral acid or a Lewis acid. The sulphide catalyst component is represented by the formula R 5 -S-R 6 , wherein R 5  and R 6  represent substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, aryl, aralkyl or a heterocyclic group, or R 5  and R 6  jointly form a saturated or unsaturated heterocyclic ring together with the adjacent sulphur atom or including a sulphur, oxygen or nitrogen atom. Suitable sulphides are tetrahydrothiophene and di-alkyl sulphides, preferably used in combination with an inorganic acid.
Patent GB-1268359-A (GB)
Title: Improvements in or relating to assessor circuits
Inventor: MATTHEWS PETER CHARLES
IPC: G06V30/18
Filed: 1968-07-18
Abstract: 1,268,359. Transistor switching circuits. PLESSEY CO. Ltd. 16 July, 1969 [18 July, 1968], No. 34242/68. Heading H3T. The largest of a plurality of (negative) input signals 4, 3, &c. is detected by a circuit comprising transistors 6, 10 respectively receiving the signals, having a constant current source 7 connected to their emitters and driving respective emitter followers 8, 11 with a common load 13, the load 13 controlling the current through a transistor 14 connected in series with a transistor 15 which derives base bias from the constant current source 7. A variable constant current source 16 and a resistor 17 provide a variable level shift for the output signal. A similar circuit 1<SP>1</SP> detects the most positive of input signals applied at 3<SP>1</SP>, 4<SP>1</SP>. The two signals are compared at 2.  (For Figures see next page)
Patent GB-1531712-A (GB)
Title: Aerosol dispenser actuation apparatus
IPC: B65D83/16
Filed: 1975-11-04
Abstract: 1531712 Actuating aerosol dispensing container valves ADVANCE LINEN SERVICES Ltd 4 Nov 1975 [5 Aug 1974] 34403/74 Heading F1R Bursts of e.g. perfume or medicament are repetitively emitted by an aerosol can in which the valve is repetitively opened by a cam, driven by an electric motor which is stopped after each burst until re-energized by a transistorized timing circuit responsive to contacts operated by the cam.
Patent GB-1220739-A (GB)
Title: Improvements in or relating to colour printing
IPC: G05D25/02
Filed: 1968-07-19
Abstract: 1,220,739. Automatic control for colour printing. HURLETRON Inc. July 19, 1968 [April 3, 1968], No.34682/68. Heading G3R. An apparatus for controlling the colour density of ink applied to a moving web comprising means for applying ink to a fountain roller; means for transferring the ink to a printing cylinder; means for transferring ink from the cylinder to the web; means 40 for sensing the colour density on the surface of the web, means 41 for generating a control signal indicative of the colour density; means for comparing the control signal and a reference signal 46 to form an error signal; means 47 for storing the error signal; and means 48, 49, 50 connected between the storage circuit 47 and a motor 13a to control the supply of ink to the fountain roller the means 48, including a dead bond circuit 66 which only allows response to error signals of a magnitude outside the dead bond. The motor 13a drives the fountain roller at a speed which determines the colour density. The reference signal may be set at the press controls 51 by an operator and is added to the control signal. The error storage circuit comprises a high impedance resistor 61 in series with amplifier 60, an equal impedance feedback resistor 62 across the amplifier, and a capacitor 63 in parallel with resistor 62, the R.C. time constant of the feedback circuit being four seconds. The error storage signal is sampled every six seconds by an electronic relay 67 which closes relay contacts 64 in sampling circuit momentarily. The electronic relay comprises a relay coil in series with a silicon controlled rectifier which is triggered by a circuit including a unijunction transistor and rendered non-conducting by another circuit including a unijunction transistor Fig.6 (not shown). The storage signal is fed to a dead-band circuit 66 and if the signal lies outside its upper and lower values an error signal is fed to the time proportional correcting circuit 49. The storage signal causes relay 68 to close its contacts 69 for a time proportional to the magnitude of the error and one of the contact sets 73, 74 depending on the sense of the error. The motor controller 76 or 77 therefore applies a correction,to fountain roller motor 13a to correct the ink supply.
Patent GB-1392264-A (GB)
Title: Fluid actuated clutch
IPC: F16D25/063
Filed: 1973-07-23
Abstract: 1392264 Friction clutches NISSAN MOTOR CO Ltd 23 July 1973 [26 July 1972] 34982/73 Heading F2C In a fluid pressure operated friction clutch for a vehicle automatic transmission wherein a driven clutch disc 24 is clamped between a presser plate 28 and a driving surface 22 of a clutch drum 12 by supplying pressure liquid through a duct 50 to a chamber 32 and is disengaged by supplying pressure liquid through a duct 52 to a chamber 34, the driven disc 24 is separated from the driving surface 22 during clutch disengagement by the pressure liquid supply to the chamber 34 which is directed between the driven disc 24 and driving surface 22 by a one-way valve 70 which closes a duct 68 through the driven disc hub 62. A plurality of passages 60 through the presser plate 28 ensure a continuous flow of liquid between the driven  disc 24 and driving surface 22 during clutch disengagement. During clutch engagement the one-way valve 70 opens to permit a flow of  liquid from the chamber 32 through passages 60 and ducts 68 to the duct 52.
Patent GB-1000481-A (GB)
Title: Improvements in or relating to sewing machines
Inventor: BRADSHAW ROBERT WILLIAM
IPC: D05B57/14
Filed: 1960-10-13
Abstract: 1,000,481. Sewing machines. BRITISH UNITED SHOE MACHINERY CO. Ltd. Sept. 22, 1961 [Oct. 13, 1960], No. 35025/60. Heading D1G. A sewing machine shuttle comprises a rotary looptaker 1 journalled in a fired member 3, a locking-thread case 7 having a cylindrical recess 5 adapted to receive a cop of thread and journalled within a recess 4 in the looptaker on ball bearing 13, and a member 19 extending across recess 5 for retaining the cop therein and having a threadguiding passage 25 in axial alignment with the axis of recess 5. Member 19 is in the form of a bar one end of which is pivoted at 17 to the thread case and the other end of which is releasably secured to the thread case by a latch member 33 pivoted at 35 to bar 19 and having an end portion 37 biased by a spring 39 into a recess in the thread case. Bar 19 carries a pin 21 which extends across the open end of the thread case. The thread passes from the centre of the cop into the passage 25 which extends into the thread case, then passes between a tensioning leaf spring 27 and a wear block 29 on bar 19, and finally passes over a pin 31 on bar 19. The thread case is prevented from rotating solely by the tension in the locking thread. It is stated that the shuttle is incorporated in a machine for sewing outsoles to shoe welts such as that described in Specification 410,463.
Patent GB-1161649-A (GB)
Title: Improvements in Cable Construction
IPC: H01B9/02
Filed: 1968-07-23
Abstract: 1,161,649. Cables. LANDUND SEEKABELWERKE A.G. 23 July, 1968 [3 Aug., 1967], No. 35103/68. Heading H1A. In an X-ray cable having a core portion 1 with "rubber" insulation 3 separated from an outer shell 8 by conductive "rubber" 4, 7 and a wire sheath 5, the sheath 5 is prevented from bonding to layer 7 by a covering 6 of a conducting powder, e.g. graphite.
Patent GB-211642-A (GB)
Title: Circle cutting machine
IPC: B27B5/12
Filed: 1922-12-27
Abstract: 211,642. Billingsley, P. L. Dec. 27, 1922. Planing and moulding. - A rotary cutter intended for cutting in a curved path is carried on a spindle 27 mounted in a casing 32 angularly adjustable on a radius arm 11 which can itself slide in a support 15 pivoted at 22 and provided with clamps 19. The spindle 27 is supported by a block 57 vertically adjustable in guides 52 which are carried by a shoe 51, the shoe being moved by hand to traverse the cutter. The spindle 27 is driven by a flexible mechanism 26 of the kind described in Specifications 190,221 and 190,428. In the arrangement shown in Fig. 2, a dished saw 43 is in use for cutting out a cash bottom; Fig. 7 shows a chamfering cutter 430 substituted for the saw.
Patent GB-1425812-A (GB)
Title: Orientation indicating apparatus
IPC: G01C9/06
Filed: 1973-07-24
Abstract: 1425812 Photo-electric orientation indicators C L GOOLEY 24 July 1973 [24 July 1972] 35206/73 Heading G1A An orientation indicating device comprises a chamber containing a bubble in a liquid and a photo-electric system for detecting when the bubble is in the position indicating the desired orientation, this system comprising a source arranged end on to the bubble and a detector  arranged laterally to receive radiation reflected from the end of the bubble when it is in the reference position. The light source may be a filament lamp or a LED or may be a glass fibre one end of which is exposed to ambient light. The photo-detector may be a photo-conductor or a photo-transistor. The output of the detector is applied to a switching circuit arranged to produce a visible indication of the occurrence of the desired orientation by means of a filament lamp or LED, give an audible signal, key a radio transmitter or operate a relay or control circuit. The arrangement may be adapted for vertical or horizontal orientation and the position of both ends of a bubble may be detected. The system may be adjustably mounted for calibration purposes. The device may be used to sight telescopes, binoculars or cameras or in an aircraft auto-pilot to detect deviations from level flight. Two perpendicular tubes may be mounted in a plumb bob. The output signal may be applied to a counter or register for use in a pedometer. Greater sensitivity can be achieved by using two oppositely inclined tubes so that any deviation immediately produces movement of one of the bubbles.
Patent GB-1367181-A (GB)
Title: Pipe duct for hot media
IPC: F16L59/18
Filed: 1972-07-28
Abstract: 1367181 Purifying I C engine exhaust gases FRIEDRICH BOYSEN 28 July 1972 [28 July 1971 8 Jan 1972] 35350/72 Heading F1B [Also in Division F2] A pipe duct, especially for a thermal reactor in I. C. engines comprises an inner pipe 20 subdivided into sections 20a, 21a, 22a sliding in or on one another, an outer continuous sleeve 23 connected in a fluid tight manner to the inner pipe end sections as at 24a and 25a, and thermal insulation between the inner pipe and the sleeve. The end 30 of one pipe section may slide freely in an enlarged end 28 of the adjacent pipe section preferably in the direction of flow X of the medium in the inner pipe. Alternatively the end of the upstream pipe may be double wall so as to slide over the end of the adjacent downstream section Fig. 14 (not shown) or a sliding ring e.g. a piston ring may be arranged between the pipe ends to form a seal. A pressure balancing chamber 549 may be provided adjacent the sliding joint of the inner pipe sections. The insulation material may be arranged in two layers, an inner layer of more solid consistency and an outer layer of less solid consistency Fig. 2 (not shown). Alternatively the more solid consistency insulation material can be arranged only around the joints of the inner pipe sections to aid sealing of these joints Figs. 3 and 4 (not shown). A heat resistant sheet e.g. of nickel alloy may-be arranged between the inner pipe and the insulation or the insulation may be encased in such a sheet Fig. 5 (not shown). The outer sleeve may be received to the inner pipe by welding end caps 24, 25 thereto or they may be joined by flanges Figs. 7, 8 (not shown) for attachment of the pipe to other fittings &c. The invention can be adapted for pipe bends as shown in Fig. 6 and to exhaust manifold fittings Figs. 10 and 15, and Figs. 7, 9, 18 (not shown). In the embodiment of Fig. 10 separate pipe sections 442a, 441a, 441b, connect with the main inner pipe section 422a in a slidable manner. The pipe section 422a can be divided into separate passages by partition 439 Figs. 11, 13 (not shown), show further details. In Fig. 15 one end of inner pipe section 614 bears against an abutment 621 and the other end is slidable on adjacent section 615 by means of a sliding piston type ring 617, 618. In this embodiment a cooling zone 625 is arranged after the insulated reactor zone. Air is directed into the space between the inner pipe and the outer sleeve through openings 623 formed by scoops 624 and flows out through openings 627 in the sleeve. In the similar embodiment of Fig. 18 (not shown) the joint between inner pipe sections is arranged within the insulated section and again the inner pipe is divided into two passages for connection to separate exhaust outlets.
Patent GB-338370-A (GB)
Title: Improvements in steam or gas turbines of radial flow type
IPC: F01D1/24
Filed: 1929-11-19
Abstract: 338,370. Svenska Turbinfabriks Aktiebolaget Ljungstr÷m. Nov. 27, 1928, [Convention date]. Radial-flow type with oppositely-running rotors. -Relates to the arrangement of the steam chests 14, 15 in a turbine of the type in which the oppositely-running rotors have radial blade systems 4, 5, 6, and axial blade systems 11, 12. The chests are bounded by walls 13, 16, 17, 18 which are made integral by casting or welding, and a disc 19 which is secured by being bolted to an inwardly directed flange 30 on the wall 16. The length of the wall 17 is such that the bolt 29 is accessible. Labyrinth packing is provided at 20, and a shaft stuffing-box at 23. A pipe 24 leads leakage steam from an intermediate section of the stuffing box to the chest 15, and a pipe 26 leads water and steam away from the end of the box. The admission of air may be prevented by introducing steam to the box 23 through a pipe 25. The chest 15 may be used for either intermediate admission or extraction purposes.
Patent GB-731520-A (GB)
Title: Improvements in making gas-expanded rubber
IPC: C08J9/10
Filed: 1953-12-21
Abstract: Vulcanized gas-expanded synthetic rubber is produced by incorporating the reaction product of hydrazine and sulphur dioxide in a vulcanizable rubber mix, shaping the mixture containing the reaction product in undecomposed form, and subsequently heating the shaped mixture so as to evolve gas and then vulcanize the mixture to a cellular mass.  The reaction product has the probable formula <FORM:0731520/IV (a)/1> and decomposes at approximately 185 DEG  F. The synthetic rubber may be a polymer of butadiene, isoprene or chloroprene; or a copolymer of butadiene with styrene, acrylonitrile or isobutylene. Specification 692,142 is referred to.ALSO:Vulcanized gas-expanded rubber is produced by incorporating the reaction product of hydrazine and sulphur dioxide in a vulcanizable rubber mix, shaping the mixture containing the reaction product in undecomposed form, and subsequently heating the shaped mixture so as to evolve gas and then vulcanize the mixture to a cellular mass.  The reaction product has the probable formula:-  <FORM:0731520/V/1> and decomposes at approximately 185 DEG  F.  In examples, from 0.5 to 2.5 parts of the reaction product are added to 100 parts of pale crepe rubber, the mix also including zinc oxide, whiting, lithopone, zinc laurate, petrolatum, sulphur and benzothiazyl disulphide.  Specification 692,142 is referred to.
Patent GB-784113-A (GB)
Title: Improvements in or relating to agricultural machines
IPC: A01C7/16
Filed: 1955-12-09
Abstract: 784,113. Distributers for fertilizers and seeds. STOKLAND, S. Dec. 9, 1955 [Dec. 15, 1954], No. 35496/55. Class 6(1). An agricultural machine for use as a seed planter and/or a fertilizer distributer comprises members 4 mounted on a shaft 5 and spaced by distance pieces 6 to form a series of endless circumferential groove-like recesses 3 which are inclined with respect to the axis of the shaft the members being at right angles to the axis of the roller. The shaft is given an axial displacement by means of a cam plate 4<SP>1</SP> of the same shape as the members 4 which co-operates with cam followers 11. The plate 4<SP>1</SP> is also engaged by cam followers 11<SP>1</SP> mounted on a support 12<SP>1</SP> which is pivotally secured to a slide 29 which is connected by a link 28 to a rod 23 on which are mounted plates 24 which engage the periphery of the shaft and block the recesses 3. The recesses 3 are also blocked by plates 24<SP>1 </SP>fixed to a rod 43. The end walls of the hopper are provided with guides 44 which receive the ends of a partition wall 45. Delivery openings are provided in the bottom of the hopper and the width of the openings are regulated by spring- urged plates 33 connected by links 39 to arms 38 mounted on shafts 36 which are rotated by levers 42. The openings are of triangular shape with the apices pointing downwardly. The shaft 5 is driven by a ratchet mechanism from a handwheel of the machine. Two compartments A, B are formed in the hopper and the machine can be used for distributing fertilizer and sowing grain. In a modification, agitating arms are pivoted on the hopper and engage the peripheral portions of the members 4.
Patent GB-1400954-A (GB)
Title: Profiled rollers
IPC: B21D5/08
Filed: 1973-07-26
Abstract: 1400954 Profiled bending rollers; making pipe cladding collars; shearing; punching; generating KITSON'S INSULATION PRODUCTS Ltd 26 July 1973 [1 Nov 1972] 35674/73 Headings B3A B3E B3T and B3W Apparatus for forming a profiled strip of material with bent over edges comprises two co-operating rotatably mounted rollers 1, 2, one of which having at least two projecting ribs 3 and the other having at least two grooves 4 for receiving respective ribs. Respective faces 3b, 4b, Fig. 3, of the ribs and grooves, which lie in elliptical paths, co-operate to give a shearing effect when the rollers are contrarotated. The strip may be of uniform or of varying width and may be given profiles to increase its handling resistance using cooperating pairs of projections and recesses 5, 6, and 7, 8, Fig. 1. The strip may be bent into annular collars for thermal insulating pipe cladding and a flexible tubular member can be formed by joining collars having alternately outwardly and inwardly extending side portions (10), Fig. 4 (not shown). The profiled rollers may be formed by mounting a blank 11 on a shaft 12, Fig. 5, for rotation therewith, the blank having plates 15, 16 mounted either side provided with followers 17, 18 which engage cams 19, 20 upon rotation of the shaft. A stationary cutting tool 23 is used to machine the blank to form the grooves or ribs one at a time. The partly machined blank may be removed from the shaft and replaced thereon in the opposite orientation to machine the other rib or groove in like manner to the first rib or groove.
Patent GB-764623-A (GB)
Title: Gas flow regulator with float plate
IPC: G05D7/01
Filed: 1954-12-10
Abstract: 764,623. Fluid-actuated valves. VAILLANT, H., [trading as VAILLANT KOMM.-GES., J.]. Dec. 10, 1954 [Dec. 17, 1953], No. 35765/54. Class 135. A gas flow regulator having a float 11 round the edge 12 of which the gas flows from the inlet 1 to the outlet 6 and in which the float controls orifices 9 to 9<SP>11</SP> in a central guide tube 7 by means of a guide sleeve 10, is characterized in that the suction effect of the flow of gas between the edge 12 and the orifices 9 to 9<SP>11</SP> on the downstream-facing surface of the float is prevented by curving and/or perforating the float to produce an eddy above the float. The float is cup-shaped with a narrow flange 13 forming a.peripheral gap 12 with a body bell 3, and perforations 15, 15<SP>1</SP> in the bottom of the cup. By allowing a flow of gas to by-pass the float via the orifice 17 controlled by a spring blade valve 17a set by the screw 16, the position of equilibrium of the float may be adjusted. In this way the pressure characteristic of the regulator is prevented from drooping when the supply pressure and flow increase.