baber/WOPTO huggingface dataset:
Patent GB-466838-A (GB)
Title: Improvements in and relating to photographic contact-printing machines
IPC: G03B27/22
Filed: 1936-03-11
Abstract: 466,838. Photographic printing apparatus. HALDEN & CO., Ltd., J., and HALDEN, J. B. March 11, 1936, No. 7287. [Class 98 (ii)] In a photographic contact printing machine. of the kind having endless driving blankets moving over the convex face of a curved piece of glass, the glass and the rollers carrying the endless blankets are mounted between two pivoted members, one at each side of the machine, so that the whole unit can be swung outwardly on its pivots to provide immediate access to the glass. As shown, the machine has side members 3 to which are pivoted at 5 the members 4 carrying between them the curved glass 16 fixed by clips 21, the rollers 8, 9 10 carrying the blankets 15 and the table 18 from which the work is fed. The rollers 8, 10 are driven by chains 11, 12 from the motor 20. The roller 9 is for tensioning only. The lamp 17 reciprocates from end to end of the machine. To gain access to the glass from the front of the machine the members 4 can be swung outwards about the pivots 5, the sprocket 13 being detachable or the chain being slipped off it for this purpose. The pivots 5 are so arranged in relation to the centre of gravity that the weight of the pivoted unit tends to return it to the normal position shown, in which it is held by locking handles 6 and 7.
Patent GB-914548-A (GB)
Title: Improvements relating to wheel discs with ceramic blades for axial-flow machines
IPC: F01D5/30
Filed: 1961-02-28
Abstract: 914,548. Mounting turbine blades. DAIMLER-BENZ A.G. Feb. 28, 1961 [March 4, 1960], No. 7305/61. Class 110 (3). In a rotor disc for an axial-flow rotary machine, particularly a gas turbine, comprising ceramic blades each set in a groove, a thick supporting sleeve or thick supporting strips, of a material substantially softer than ceramic material, is or are inserted between the blade root and disc and completely or partially embrace the root, which sleeve or strips after initial plastic deformation due to centrifugal force, fix the blades against relative movement in either radial direction by the interengagement shapewise of the sleeve or strips with the root and neck of the blade and the disc. A sleeve 33, Fig. 3, preferably of copper, is inserted between a ceramic blade root 31 and an axially-extending groove 36 in a turbine rotor disc. The sleeve 33, which projects beyond the sides of the rotor disc, is upset at each end to fix it axially. During initial operation, centrifugal force on the blade produces plastic deformation of the sleeve 33, whereby the root is embedded in the sleeve and supporting elevations 38 are formed. In a modification, Fig. 2, the sleeve is replaced by strips 23<SP>1</SP>. In a further modification, the blade root and the groove in the rotor disc are both of circular form, a sleeve of uniform thickness being used.
Patent GB-591365-A (GB)
Title: Improvements in or relating to electrically heated clothes racks
IPC: A47K10/06
Filed: 1945-03-23
Abstract: 591,365. Electrically - heated drying - racks. PARSONS, R. W. B. March 23, 1945, No. 7361. [Class 39 (iii)] [Also in Group XIV] A drying-rack comprises rails A, crossbrackets B, and one electric heating tube C or more, suspended, e.g., by brackets D, below the rails A so that heated air circulates about articles hung on the rack. The tube C comprises a resistance wire totally enclosed in a metal tube. In the example shown, the tube C has a pilot lamp E and supply leads L at one end and a protecting gauze shroud G. A thermostat F is fixed to a bracket B and included in the electric circuit. The assembly is suspended by cords M passing over pulleys J.
Patent GB-747222-A (GB)
Title: Method and device for compression and expansion for electric pulse communication systems
IPC: H04J3/00
Filed: 1954-03-15
Abstract: 747,222. Pulse modulation systems. COMPAGNIE INDUSTRIELLE DES TELEPHONES. March 15, 1954 [March 23, 1953], No. 7404/54. Class 40 (5). Relates to instantaneous compression and expansion circuits for compandor systems using duration-modulated pulses. In the compression circuit rectangular pulses, Fig. 3, from a source 17, 17<SP>1</SP>, Fig. 10, are modulated in amplitude in circuit 15 by a voice current source 12, 12<SP>1</SP> and applied to the clipper valves 14, 18, through transformer 13. The transformer 11 adds to the modulated pulses a voltage from a source 10, 10<SP>1</SP> of the " compression " waveform APMQB, Fig. 4, to produce a waveform lying between the extremes I, II. The clipping of this waveform between the voltage limits a, a<SP>1</SP>, and b, b<SP>1</SP>, by valves 14, 18, produces durationmodulated pulses whose trailing edges lie between the extreme times t1, t2 and which have been modified by the compression waveform. The latter may be produced by applying a sine wave, Fig. 9(a), to a squarer valve 2, Fig. 8, from a source 1, to produce the square wave of Fig. 9(b) across resistance 4. The latter is shunted by a short-circuited delay line 3 of such dimensions as to modify the square wave voltage to assume the form of alternate positive and negative pulses, Fig. 9(c). The negative pulses are removed by the biased valve 5 and the output resistance 8 is shunted by a shortcircuited delay line 7 to produce the closelyspaced pairs of pulses, Fig. 9(a). These pulse pairs are converted to the desired waveform, by the low-pass filter 9, which is connected to the modulator terminals 10, 10<SP>1</SP>. The expansion circuit at the receiver comprises a gate circuit 21, Fig. 11, which is opened by the signal pulses, on terminals 22, 22<SP>1</SP>, to allow parts of an auxiliary locally-generated sawtooth wave, on terminals 20, 20<SP>1</SP>, to pass to the low-pass filter 23 and demodulated-signal amplifier 24. The auxiliary sawtooth wave JLH 0 NR, Fig. 6, straddles the trailing edge G 0 O 0  of the unmodulated received pulses, the extreme modulated positions of the latter being G1, H1 and G2, H2 so that the variable portion of the gate circuit output energy has the desired expansion characteristics due to the variable triangular portions H2, K2, H0 and HO, K1, H1. The sawtooth wave may be replaced by a rectified sine wave, Fig. 7 (not shown). Specification 650,886 is referred to.
Patent GB-548099-A (GB)
Title: Improvements in or relating to retractable tail wheels for aircraft
IPC: B64C25/14
Filed: 1941-06-17
Abstract: 548,099. Aircraft retractable undercarriages. FAIREY AVIATION CO., Ltd., CHAPLIN, H. E. and FORSTER, F. W. June 17, 1941, No. 7648. [Class 4] The oleo leg of a retractable tail wheel is pivoted about a transverse axis e and is braced in its operative position by a jointed strut g, h the part h being acted upon by a jack q to raise and lower the tail wheel, and initial movement of the jack serving to actuate detents t, u for locking the strut in its retracted and extended positions respectively. The detents t, u are connected by links s, s<SP>1</SP> to a rocking lever n pivoted in a lug o on the part hare pivoted to the jack plunger. The detent t is spring urged into engagement with a lug v on the part g when the leg is retracted. The detent u, in the extended position of the tail wheel engages a notch x in a circular plate w on the part g over which the detent rides during the extending operation until it snaps into the notch under the pull of the jack.
Patent GB-452595-A (GB)
Title: Improvements in evaporators
IPC: B01D1/04
Filed: 1935-03-12
Abstract: <PICT:0452595/III/1> <PICT:0452595/III/2> In an evaporator comprising a vertical cylindrical vessel heated by coils B, the inlet and outlet ends of which project into a rectangular recess at the lower part of the vessel and are respectively connected to steam and condensate headers D, E, Fig. 2, formed integral with a door frame 5, the door F, frame and headers forming the recess, the flange 4 by which the frame and header are attached to the shell of the evaporator is so shaped as to form an air space between the header and the flange to prevent heat transfer between the header and the contiguous water of the shell.  The periphery of the headers is substantially wholly located outside the evaporator.  A perforated spray arrester T, the peripheral edge of which is connected to the evaporator shell, is arranged between the heating coil and a baffle H to separate liquid drops from the vapour.  The spray arrester may be composed of two plane plates meeting at a ridge apex or of a single plate bent to conical shape, as shown, wherein a drainage opening 15 is provided covered by a baffle plate 16.  A vertical plate 11 is arranged between the door and the coils and a three-sided apron 12 is arranged around the contour of the coils thus forming segmental spaces S, P, Q, R in which the liquid circulates in a downward direction.  The latter, the spray arrester and the prevention of local intense heating of the liquid from the headers inhibits the formation of liquid drops in the vapour such as in the evaporation of sea water to obtain boiler feed pure water.  Specification 309,105, [Class 99(i)], is referred to.
Patent GB-919492-A (GB)
Title: Dry shaver
IPC: B26B19/00
Filed: 1959-03-05
Abstract: 919,492. Dry shavers. NAHON, J. M. March 5, 1959 [May 7, 1958], No. 7693/59. Class 131. A dry shaver comprises a grid 15a, penetrated by hair to be cut, a series of cutting blades 11 mounted on an endless belt 4, and means for driving the belt to traverse the cutting edges 11a across the inner surface of the grid. The belt 4 is mounted on rollers 5, 6, one of which is driven by a band 2 coupled to an electric motor in the casing 1. The belt carries detachable resilient mountings 12 for the blades, which may be detachable, and baffles 13 which ventilate and remove cut hair from the closed chamber formed by the cover 15 carrying the grid and a housing 14. A resilient switch member 16 breaks contacts 18, 19 in the power circuit to the motor and a brake 21 stops rotation of the roller 5 when the cover 15 is raised. In modifications the belt is driven manually or by clockwork or the electric motor has a fixed shaft and a disctype rotating armature arranged within a third roller which drives the belt directly. In a further modification the cover is integral with the easing of the shaver.
Patent GB-492281-A (GB)
Title: Improvements in and relating to electric motor control
IPC: H02K23/18
Filed: 1937-03-16
Abstract: 492,281. Brush - gear for dynamoelectric machines. BRITISH THOMSONHOUSTON CO., Ltd., and ADKINS, B. March 16, 1937, No. 7711. [Class 35] In an alternating- current motor, the speed of which is varied by the relative movement of two brush-rockers, the rockers carry additional brushes engaging stationary slipring sectors or slipring sectors engaging additional stationary brushes. In the form shown, brush bracket 2 carries brushes 4A, 4B, 4C bearing on the commutator and on slipring sectors 6A, 6B, 6C while the bracket 3 carries brushes 5A, 5B, 5C resting on the commutator and slip-ring sectors 7A, 7B, 7C, the sectors being mounted on a stationary plate 8. As an alternative, the sectors may be mounted on the brackets to engage stationary brushes. Specification 25358/11, [Class 35], is referred to.
Patent GB-888395-A (GB)
Title: Process for improving vinyl esters
Filed: 1959-03-05
Abstract: Vinyl esters are improved by treatment at 60 DEG C.-140 DEG C. with an organic peroxide, and distillation in the presence of a sparingly volatile stabiliser known for the stabilisation of vinyl esters. Suitable peroxides are acyl peroxides and tert-butyl peroxides. Examples treat vinyl acetate and laurate, using copper resinate and phenthiazine as stabilisers.
Patent GB-581022-A (GB)
Title: Improvements in or relating to cigarette containers
IPC: A24F15/10
Filed: 1944-04-25
Abstract: 581,022. Combined cigarette containers and igniters. MAYER, R., and UNIVERSAL MATCH CORPORATION. April 25, 1944, No. 7740. [Class75 (iii)] [Also in Group XVII] A combined cigarette container and igniter comprises a box-like tray a, Fig. 2, with a compartment 6 for an igniter, and a magazine D shown also in Fig. 4 hinged so that it can move with or independently of a hinged lid b. The magazine has a discharge opening 51 closed by a shutter E of L-section spring- pivoted at 58 and having arms 54 which contact blocks 60, Fig. 2 when the lid is closed and rotate the shutter so that a cigarette can fall into channel 13 while simultaneously an arm 64, Figs. 2, 3 and 7 pivoted at 63 to the shutter is moved so that an extension 64' disengages from an insulation switch-arm 75 and thus lifts a button 42 to break the ignition circuit, the element 64, 64<1> at the same time pushing a bellcrank arm 67 so that element G is moved against a spring 73 to retract a cigarette-propelling finger 70. When the lid b and magazine D are lifted, link-extension 64<1> shifts to first engage its shoulder 74 with insulation-arm 75 and then to move switch-arm 40 so as to cause contacts 41, 42 to engage and close the circuit of igniter B. A link 66 and an extension plate 66<1> simultaneously actuate the spring-controlled element G so that finger 70 shifts the cigarette F into igniting position. Magazine wall 49 may be of transparent material. If the magazine lifts without leaving a cigarette in the tray, or if the cigarette remains too long in the tray so that it gets partially burned away, the igniter circuit is automatically broken by the action of spring 73.
Patent GB-1119467-A (GB)
Title: Selective signalling system
IPC: H04B10/10
Filed: 1967-02-20
Abstract: 1,119,467. Transmission systems. AMP Inc. 20 Feb., 1967 [4 March, 1966; 15 July, 1966], No. 7947/67. Heading G4H. In a signalling system including a transmitting station and a receiving station, the transmitting station includes an encoder capable of transmitting selected codes of a plurality of characteristic calling codes and each receiving station includes a decoder responsive to a selected one of the characteristic calling codes, each calling code comprising a sequence of characters and each character comprising a sequence of pulses. In the embodiment described data is entered into an encoder at the transmitter by means of a keyboard 70 (Fig. 2A) and stored in a shift register 72 comprising a series of bi-stable stages which store a four digit character in a two out of five code. Under the control of an output driver 73 the data in the register 72 is gated serially to a translating device 75 which includes a relay having two coils W1, W2 connected to be alternately operated by a contact c1. Whenever an output pulse from a set stage of the register 72 is received contact c1 switches its position to either energize or de-energize coil W2 and so open or close contact c2 to control the connection of a battery B1 to the transmitter 74. In this way a serial pulse train is fed from the translator 75 to a transmitter 74 where if required and if for example the transmission is by radio link a single frequency tone may be transmitted when a pulse is received by the transmitter 74 with absence of tone when there is no pulse or alternately one frequency may represent a pulse and a second frequency no pulse. In this case suitable filtering means are required at the receiver. A land line transmitter or an optical transmitter may be used, in the latter case the pulses being used to modulate a transducer capable of biasing for example a laser. At the receiver the complement L of the received pulse train L is also generated and the two pulse trains fed to multi-aperture cores 110 (Fig. 8) having selected windings N c  and N s  linking the cores through major apertures and windings N x  linking all the cores through the minor apertures. The N c  windings are selectively connected to the leads 114, 115 on which the two pulse trains are received so that when a receiving station receives its characteristic calling code the first core 01 r  is switched to its set state by an initial tag bit and the state of this core is transferred to the next core by each successive bit on the leads 114, 115 so that at the end of the four character code an output signal may be received on output loop 116 of the last core 20 r  to illuminate a lamp. To facilitate altering the windings of the cores 110 so that the characteristic code of a receiver may be altered the windings may be connected to a plug board assembly (Figs. 11 and 12, not shown).
Patent GB-1488634-A (GB)
Title: Multiple ratio power transmission mechanism
IPC: F16H3/66
Filed: 1976-03-01
Abstract: 1488634 Change-speed gear FORD MOTOR CO Ltd 1 March 1976 [24 April 1975] 07995/76 Heading F2D Four reduced ratios, direct drive and one reverse are provided by three sun ring trains with identically sized rings and suns, the two outer trains 26, 36 having simple planets, the centre 28 intermeshed planets, the output train 26 being a direct reduced train in series with the trains 24, 28, which operate compounded and have a common sun 32, whilst all three trains have a common ring gear 30. An input shaft 54 drives, through a forward clutch CL1, engaged in all forward ratios, the planet carrier 50 of the centre train 28 and, through a directreverse clutch CL2, the common sun 32. Output 44 is taken from the carrier 42 of the series train 26, which has a direct-drive clutch CL5 and reduced drive brakes OWC2 and CL6 for oneway and two-way drive respectively. The front planet carrier 38 has similar one- and two-way brakes OWC1, CL4. Fig. 3 shows the clutches and brakes engaged for the respective ratios, two-way drive being represented by HB (hill braking). All the ratios are specified numerically (Fig. 2, not shown). The input shaft 54 is driven through a torque converter 10, with lock-up clutch 22.
Patent GB-628861-A (GB)
Title: Improvements in or relating to torque counteracting rotors for helicopters
IPC: B64C27/82
Filed: 1947-03-26
Abstract: 628,861. Helicopters. FIRESTONE TIRE & RUBBER CO. March 26, 1947, No. 8225. Convention date, April 17, 1946. [Class 4] In order to balance the reaction torque of the lifting rotor 12 of a helicopter, two auxiliary rotors 17a, 17b are mounted on a common transverse axis and are located below the main rotor exteriorily of the fuselage 7 so as to be subjected to the unobstructed downwash of the main rotor. The blades of the auxiliary. rotors are of variable pitch, one form of pitch control, Fig. 3, comprising axial shafts 35a, 35b connected to pitch control arms 33 and displaceable by a pivoted member 37 connected by a link 40 to a screw-member 45 engaging a sleeve operated by chain-and-sprocket 43, 44. In a modification, Fig. 4 (not shown), a chain and sprocket actuates shafts mounted parallel to the axis of the auxiliary rotors and connected by links to axially-displaceable hub sleeves by which the rotor pitch is varied. In order to prevent interference the distance between the auxiliary rotors is approximately equal to their diameter.
Patent GB-609570-A (GB)
Title: Improvements in the construction of barges and ships
IPC: B63B3/68
Filed: 1946-03-16
Abstract: 609,570. Ceilings for ships. SHOOSMITH, G. T. March 16, 1946, No. 8230. Drawings to Specification. [Class 113 (ii)] The ceiling for a barge or ship is formed of large prefabricated sections constituted by tongued and rabbeted planks bolted to metal frames, the whole sections then being bolted to the floor frames of the vessel.
Patent GB-220682-A (GB)
Title: Electric telemotor apparatus
IPC: G05D3/12
Filed: 1923-03-22
Abstract: 220,682. Laughlin, M. P. March 22, 1923. Systems controlling travel for a fixed distance. -An electric motor is caused to travel over a distance proportional to the displacement of a remote controlling handle by means of a starting and stopping relay g energized by an alternating current circuit b containing two induction regulators 24, 17 having stationary coils and angularly movable coils which are respectively operated by manual controlling means 19 and by the working motor 11. The induction regulators are connected in opposed phase relation, and the movable coils are normally at right angles to their respective stationary coils, so that the induced voltage in the circuit b is zero, and the relay g remains open as shown. Any angular movement of the coil 24<a> causes the circuit b to be traversed by an induced current whereby the relay is closed and the motor started, the relay remaining closed until the motor has moved the coil 17<a> to an angular position in which its opposing induced voltage neutralizes that due to the coil 24<a>. As applied to ships' steering-gear, the motor 11 operates a supply valve 5 which admits fluid to hydraulic cylinders 2<a>, 2<b> adapted to move a rudder post 1.
Patent GB-903212-A (GB)
Title: Improvements in or relating to windows, roof lights and the like
IPC: E04D13/03
Filed: 1960-03-09
Abstract: 903,212. Roof lights. WEIDNER, E. I. March 9, 1960, No. 8239/60. Addition to 829,442. Class 20 (3). In the domed or dished roof light described in the parent Specification the peripheral or surrounding flange comprises walls or shells 12, 13 spaced apart to provide a sealed cavity between them. As shown, the walls are integral with extensions of the inner and outer shells 10, 11 of the light. The shells 12, 13 are spaced apart at intervals by washers 16 to take the bolts &c. for securing the light to an upstand 18. This latter comprises a body part of resin or fibre glass bonded with a polyester resin with a flange 21 for mounting the light thereon and an outer layer 19 of heat insulating material, e.g. of cork, covered by a layer 20 of waterproofing material.
Patent GB-343777-A (GB)
Title: Improvements in reversible propellers
IPC: B63H3/04
Filed: 1930-03-14
Abstract: 343,777. Screw propellers. ROTHBUCHNER AKT.-GES., 4, Ringbahnstrasse, Tempelhof, Berlin. March 14, 1930, No. 8257. Convention date, March 15, 1929. [Class 114.] In a feathering screw propeller the blades 7, 8 are mounted so as to be turnable on central pins 11, 12 in a boss 2. Eccentric pins 16, 17 also project into the boss and take into curved slots 18, 19 in rods 20, 21 which pass through the boss parallel with the shaft axis and are carried by a sleeve 24 encircling the propeller shaft. The sleeve has an inboard grooved collar in which the yoke of an actuating lever is disposed. For the purpose of assembling, the boss is made in two parts 1, 2 held by screws 4, 5 and these parts contain guides, such as 22, for the rods 20, 21.
Patent GB-185777-A (GB)
Title: Welding torch
IPC: F23D14/54
Filed: 1921-03-16
Abstract: 185,777. Marks, E. C. R., (California Burdett Oxygen Co.). March 16, 1921. Blowpipe burners.-An oxy-acetylene welding- torch has a one-piece removable tip or nozzle the bore of which is formed with a restricted portion between its ends. The welding-torch comprises a body 11 having valve-controlled oxygen and acetylene connections 12, 13, a head 20 in the body 11, a goose-neck 26 secured in the head 20, and a removable tip 28 having a constriction 29. Oxygen passes from the connection 12 through a bent pipe 16 to a conical cavity 21 in the head 20 and acetylene passes through a pipe 17 to an annular chamber 22 in the walls of this cavity. The goose-neck 26 contains a bushing 30 and a mixing- tube 35 which has an enlarged conical head fitting in the cavity 21. A nut 25 secured to the gooseneck by a clamping-ring 40 screws in the head 20 thus securing the goose-neck to the head. Oxygen passes from the pipe 16 into the mixture tube 35 and mixes with acetylene entering from the chamber 22 through small passages 43. The mixed gases pass from the mixing-tube through a tapered passage 31 in the bushing 30 and through the goose-neck 26 to the tip 28. The torch is connected by pipes to gas-supply tanks provided with gauges and adjustable pressure regulators. Tips of different sizes have differently sized constrictions such that the tips may be changed without the necessity of changing the mixing-tubes 35. The tip number indicates the proper gas pressure for that particular tip.