baber/WOPTO huggingface dataset:
Patent GB-104669-A (GB)
Title: Improvements in Hand Grenades.
Inventor: ASBURY HARRY ELIAS
IPC: F42C19/00
Filed: 1916-03-09
Abstract: 104,669. Asbury, H. E. March 9, 1916. Projectiles; projectile fuses.-Relates to handgrenades provided with time-fuses, especially to those described in Specification 104,542, and consists (1) in splaying out the end of the fuse in order to secure it more firmly to the anvil of the primary percussion cap, and (2) in providing vent passages in conjunction with this manner of securing the fuse. As shown in Fig. 1, the splayed out end of the time-fuse 19 is clamped in a socket 13 by a nut 23, which serves as anvil for the percussion cap 20. A corrugated washer 24 is interposed between the fuse and the nut, and passages 25 are made in the nut to vent off the gases of combustion.
Patent GB-806767-A (GB)
Title: Improvements in or relating to means for transmitting and receiving ultrasonic shearwave motion
IPC: G01H1/04
Filed: 1957-01-24
Abstract: 806,767. Ultrasonic wave couplings. SPERRY PRODUCTS Inc. Jan. 24, 1957 [Jan. 31, 1956], No. 2589/57. Class 40 (4). A piezo-electric element 10 generates longitudinal vibrations L in a first wedge 11 which engages a second wedge 16, the angle of the first wedge 11 and the velocities of propagation of the vibrations in the two wedges being such that longitudinal vibrations are totally reflected at the interface 15 and only transverse vibrations S (shear waves) are transmitted through the second wedge 16 into the workpiece 21. The angle of the second wedge 16 is chosen so that these shear waves strike the surface of the workpiece normally. Specifications 650,422, [Group XXXVIII], and 663,064 are referred to.
Patent GB-195211-A (GB)
Title: Improvements in apparatus for playing table games resembling bagatelle
IPC: A63D15/00
Filed: 1922-01-28
Abstract: 195,211. Hawthorn, J. H. Jan. 28, 1922. Table games.-In apparatus for playing a table game with balls and cues, a collapsable frame, Fig. 1, having a series of numbered arches 8 and a resilient cushion 11 is provided, together with a jack, Fig. 3, preferably in the form of an icosahedron. The frame is held together by pins 6 passing through extensions 4 of the sides 2.
Patent GB-763091-A (GB)
Title: Improvements relating to ship propulsion systems
Inventor: MATTEI JOSEPH BAGSHAWE
IPC: B63H23/00
Filed: 1954-01-28
Abstract: 763,091. Propelling ships. SAUNDERSROE (ANGLESEY), Ltd. April 27, 1955 [Jan. 28, 1954], No. 2659/54. Class 114. In a ship propulsion system including a main engine driving a propeller through a main clutch, an auxiliary engine drives an electric generator which serves normally to supply electric power for lighting and other auxiliary purposes but which is connectible to an electric motor which drives the propeller at slow speed through a mechanical transmission having means responsive to speed and/or torque to interrupt the transmission if either or both are excessive. The main engine 1 drives the propeller 2 through a main clutch 3, clutch output shaft 5 and transfer gear box 4, the shaft 5 being extended through the gear box 4 to a hand-controlled clutch 18 adapted to connect the shaft with a worm wheel 15 loosely mounted thereon. A worm 14 driving the worm wheel 15 is itself driven through a reduction gear 12 and hydraulic clutch 11 by a reversible motor 8 which draws current from an auxiliary generator 27 driven by an auxiliary engine 28. The clutch 11 prevents damage from overloading. The manually operated clutches 3 and 18 may be interlocked so that both cannot be in engagement at the same time. The clutch 18 comprises an annulus rigid with the worm wheel 15 and embraced by side plates non-rotatably secured to an extension of the shaft 5 and moved into engagement with the annulus by a hand lever.
Patent GB-719477-A (GB)
Title: Improvements in closure means for pressure vessels
Inventor: WHITE FRANCIS GUNSTON SWIFT
IPC: F17C13/06
Filed: 1952-02-01
Abstract: 719,477. Doors for resisting fluid pressure. DANKS & CO. (OLDBURY), Ltd. Jan. 30, 1953 [Feb. 1, 1952], No. 2698/52. Addition to 565,307. Class 123(1) In a modification of the closure means for a pressure vessel described in the parent Specification, the flexible packing ring is in the form of an annular member 18, Fig. 2, mounted on the complementary part 3 so that when the door 2 is in its closed position a surface 21 of the packing ring engages the inner face 22 of the door in the neighbourhood of its periphery and is pressed against it by fluid pressure within the vessel. The packing ring 18 includes a base portion 19, disposed within a groove 16 in the part 3, and a tongue 20 extending substantially radially and decreasing in thickness from a root end joined to the base portion. The tongue 20 is received in a wedge shaped groove in the door face 12. In another modification, the flexible packing ring comprises two tongues 40, 41, Fig. 4, secured to a base 39. The tongue 41 provides a seal when the vessel is subjected to negative pressure. In a further modification the packing ring 38 is disposed in a groove 37 in the door 2, Fig. 5.
Patent GB-347702-A (GB)
Title: Improvements in hollow rubber balls and mode of making same
IPC: B29C43/00
Filed: 1930-01-27
Abstract: 347,702. Moulding hollow rubber balls. LAW, J. A., 271, Maribyrnong Road, Ascot Vale, Victoria, Australia. Jan. 27, 1930, No. 2791. [Class 132 (ii).] In the manufacture of a hollow ball, plastic rubber is pressed into the space between a spherical outer wall and a spherical inner core supported on a peg whereby the rubber is moulded to the form of an almost complete hollow sphere, after which the rubber is partially cured and removed from the core for subsequent treatment. Rubber is moulded around a spherical core 4, Fig. 1, by two hemispherical mould members la, 1b disposed in a steamchamber. The core is supported on a peg 3 provided with an air duct 3b and is positioned by a distance piece 22a. The rubber 8 may be introduced into the mould members prior to closing or may be introduced under pressure after closing. The ball is semi-cured and removed from the mould and peg by a pin 13 and from the core by a hook member. The aperture 16, Fig. 8, formed in the ball, by the peg is reamered out, the ball is collapsed over a block 19 and a filling piece 18 coated with adhesive is inserted by a plunger 21. The ball is allowed to resume its spherical shape by the admission of air through a hole formed by the distance-piece 22a or otherwise. A number of balls are assembled in apertures in a thin plate and thus transferred to a mould 25, 27, Fig. 13, disposed within a pressure chest 31. After inflation, the balls are sealed by rubber plugs coated with adhesive. The plugs are inserted by pins 29 held in contact with the plugs by catches 37 while the curing is completed. The usual fabric cover may be applied.
Patent GB-705454-A (GB)
Title: Production of sponge rubber
IPC: C08J9/30
Filed: 1952-02-07
Abstract: Latex sponge synthetic rubber is obtained by a process which comprises foaming without coagulation a carbon dioxide coagulable latex, shaping the latex foam and then diffusing carbon dioxide throughout the foam to cause coagulation.  The foamed latex is preferably shaped in a mould and the carbon dioxide introduced into the latex under a pressure of 0.03 to 0.3 pounds per square inch by means of permeable cores made from metal, plastic, refractory or paper, and the coagulated foam vulcanized.  The synthetic rubber may be a polymer of butadiene, isoprene, chloroprene, piperylene, or 2.3 - dimethylbutadiene; or copolymers of such monomers with styrene, alpha-methylstyrene, para-chlorostyrene, di-chlorostyrene, vinyl naphthalene, acrylic acid, methyl acrylate, methyl methacrylate, acrylonitrile, methacrylonitrile, methacrylamide, isobutylene, methyl vinyl ether, methyl vinyl ketone and vinylidene chloride.  In example (3) the mix consists of a butadiene-styrene latex, potassium oleate, triethyl-trimethylene triamine solution, sulphur, accelerator, e.g. zinc dimethyldithiocarbamate or mercaptobenzthiozole and zinc oxide.ALSO:Latex sponge rubber is obtained by a process which comprises foaming without coagulation a carbon dioxide coagulable rubber latex, shaping the latex foam and then diffusing carbon dioxide throughout the foam to cause coagulation.  The foamed latex is preferably shaped in a mould and the carbon dioxide introduced with the latex under a pressure of 0.03 to 0.3 pounds per square inch by means of permeable cores made from metal, plastic, refractory or paper.  No part of the foam should be more than 3 inches from the nearest point of direct access to the carbon dioxide.  In Examples (1) and (2) the mix consists of natural rubber latex, potassium oleate, optionally with formaldehyde, sulphur, accelerator, and zinc oxide, the mix may be whipped, or may be foamed by means of hydrogen peroxide and yeast paste after adding methyl cellulose solution as a thickener.  The accelerator may be zinc dimethyl dithiocarbamate or mercaptobenzthiazole.
Patent GB-716601-A (GB)
Title: Improvements in spinnerets for the manufacture of artificial filaments
Inventor: LIPSCOMB ROBERT
IPC: D01D5/253
Filed: 1950-02-09
Abstract: <PICT:0716601/IV (a)/1> <PICT:0716601/IV (a)/2> <PICT:0716601/IV (a)/3> A spinneret plate is built up from two or more units so constructed that a face of each unit forming part of the face of the spinneret plate and the contiguous sides of said units are stepped and fit together to give liquid-tight joints when under pressure, one or more of the units having at least one groove of non-circular cross-section machined away from a stepped side so that, on assembling the units, a channel is formed through the built-up plate, said channel terminating at the spinneret face as an orifice of non-circular cross-section.  The grooves in any unit may be positioned to lie against grooves in the contiguous surface of another unit.  As shown, a stepped ring 1 of stainless steel and an imperforate centre plug 2 (shown in plan view in Fig. 1 and in section in Fig. 3, through line BB of Fig. 1) are of such dimensions and so formed that they fit together and, under downward pressure, constitute a spinneret plate which, apart from the orifices, is liquid tight.  The first step 5 of the ring 1 supports the centre plug 2, while the second step 6 (see particularly Fig. 2, which is a section on the line A-A of Fig. 1) p  provides the correct capillary length for each spinneret orifice. The overlapping portion of the centre plug 2 is cut away by machining at evenly spaced intervals 3 (Figs. 1 and 2) to provide feed ducts to the spinneret orifices 4, which are dumb-bell shaped.  Although only one ring is shown, any number of rings may be used to provide spinneret orifices arranged in concentric circles.  Heaters may be fitted inside the rings if the spinneret is to be used in melt-spinning.  The spinnerets are suitable for the melt-spinning of artificial filaments for the production of staple fibres, and artificial bristles and rattan.
Patent GB-451416-A (GB)
Title: Improvements in and relating to apparatus for playing a game
IPC: A63F3/00
Filed: 1935-02-02
Abstract: 451,416. Game apparatus. CROOKS, G., The Homestead, Pond Lane, Holbrook, Derbyshire. Feb. 2, 1935, No. 3418. [Class 132 (ii)] Board game apparatus comprises a square, circular, polygonal, or otherwise shaped board, marked with concentric paths a ... g, each path having adjacent starting and finishing points 4, 4, 7, 7, 6, 6, 5, 5, for each player, the finishing points leading to the next inner path by an inward turning and the turning points for each player being arranged radially. The paths are divided into squares and each player moves a plurality of counters, according to the throw of a die, from his starting point in the outer path with the object of entering the centre h. Counters moved on to certain divisions incur penalties or awards. Thus, counters moved on to squares marked 1 have to go back to the starting position and counters moved on to a square 2 have to move on to the square 2 in the adjacent inner or outer path. Various squares, paths, &c. on the board may be differently coloured corresponding to the counters of the players.
Patent GB-1212592-A (GB)
Title: Improvements in and relating to analytical balance weighing apparatus
IPC: G01G1/00
Filed: 1968-01-23
Abstract: 1,212,592. Weighing apparatus. H. CLESS, [trading as AUGUS SAUTER K.G.]. Jan. 23, 1968 [Jan.24, 1967; July 26, 1967], No.3435/68. Heading G1W. Weighing apparatus adapted for coarse and fine weighing operations comprises a fine balance beam 1 on which is mounted a load pan 18 and a plurality of manually removable weights 40 and which, during a fine weighing operation, operates alone and tilts by an amount proportional to the load it supports whereas, during a coarse weighing operation, is acted upon by a pivotally mounted coarse beam 26 the coarse beam 26 being arranged at an acute angle to the beam 1 with its pivotal support arranged along the transverse axis passing through the knife edge support of the beam 1 Fig. 3 (not shown). In use, the apparatus is set for a coarse weighing operation by rotating a cam 25 which then acts upon a rod 24 to free a supporting plate 20 from the fine beam 1 and upon a rod 32 to allow the coarse beam 26 to bear against the fine beam 1. In addition, the cam 25 acts upon rods 43 through levers 50, 44 to lift weights 41 from a weight holder 14 suspended from the beam 1. A load on the load pan then tilts the coupled beams 1, 26 against the action of a counterweight 19 and a spring 31 and an optical system projects a coarse reading of the weight of the load from a scale 6 on the beam 1 to a screen 12, Weight selection cams 45 are then set in accordance with the coarse weight reading so that when the cam 25 is rotated into position for fine weighing selected weights are lowered on to the weight holder 14 and the coarse beam 26 is uncoupled from the fine beam 1. Under these conditions the optical system projects readings on to the screen 12 which when read in conjunction with the coarse readings provides an accurate reading of the weight of the load. The weighing apparatus may be provided with a tare adjusting device 78 and readings of the scale 6 may be corrected by a mirror tilting arrangement 67-70 in the optical system. In an alternative embodiment weights are mounted on the weight holder during a coarse weighing operation and selectively removed therefrom during a fine weighing operation.
Patent GB-561829-A (GB)
Title: Improvements in presses for extruding metals
IPC: B21C33/02
Filed: 1943-03-03
Abstract: 561,829. Extruding. BEAVER, C. J., DAVEY, E. L., and GLOVER & CO., Ltd., W. T. March 3, 1943, No. 3482. [Class 83 (iv)] An extrusion press having a vertical container 4 with a sealing and molten metal supply vessel 7 at its upper end and ports 6 which are uncovered by the ram 1 when raised, as described in Specification 394,427, is provided with a sleeve 10 which encloses the ram with a small clearance 15 and has a substantially gastight joint 12 at the top and vents 16 at the bottom. The sleeve may be evacuated or supplied with neutral gas by a pipe 17 and may be cooled to ensure that metal drawn up by the ram 1 will solidify before reaching the upper end of the clearance 15. Such a sleeve reduces the risk of oxide being carried into the container by the ram. The sleeve may be connected to the container by a bayonet joint 18, 19.
Patent GB-433371-A (GB)
Title: Improvements in photo-electric control apparatus for escalators
IPC: B66B25/00
Filed: 1934-02-02
Abstract: 433,371. Escalators. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl- Ufer, Berlin) Feb. 2, 1934, Nos. 3503, 3504, and 3505. Convention dates, Feb. 2, 1933, Feb. 3, 1933, and Feb. 4, 1933. [Class 78 (i)] [See also Group XXXVII] In order that an escalator may run only when required by a passenger, control mechanism is provided which is actuated by the interruption of a beam of light directed upon a photoelectric cell by an approaching passenger. Light from a source 11 is directed on to a photo-electric cell 10, the output from which is amplified by means 13, such as a thermionic amplifier. The output circuit of the amplifier contains a coil 9 which is energized to close momentarily the contacts 1, 2 when current flow through the cell 10 is interrupted. When contacts 1 close, relay 7 is energized momentarily, and the closure of its contacts effects the energization of the operating coil 17 of the circuit-breaker 14, thereby causing the starting of the motor 15. Relay 7 is kept closed by current through the resistance 6. When contacts 2 close, relay 5 is energized momentarily and its contacts opened. After the passenger has passed through the light beam, the relay 9 is de-energized and the contacts 1, 2 opened, thereby causing the closing of the contacts of relay 5 and the energization of the time relay 8. The contacts 3 of the relay 8 close after a period of time designed to allow the passenger to be conveyed to the end of the escalator, and relay 4 becomes energized, thereby breaking the control circuit which includes the contact 1. The coil 17 is thus de-energized, and the motor stopped with the circuits in condition for a further cycle of operations. In order to reduce the number of actuations of the relay 8 when passengers are numerous, the energizing circuit of the relay 9 is interrupted for a predetermined period after its energization by a further time relay 19, the coil of which is energized simultaneously with the winding of relay 8. The normally closed contacts of the relay 19 are in series with the coil of a relay 18, the contacts of which are in the output circuit of the amplifier. Reference has been directed by the Comptroller to French Specification 721,369.
Patent GB-465301-A (GB)
Title: Improvements in and relating to the treatment of starch
IPC: C08B30/12
Filed: 1936-08-21
Abstract: A homogeneous mucilage is obtained by cooking potato starch milk containing 1 part of starch to not more than 5 parts of water without the addition of any chemical reagents, and then beating, kneading or stirring energetically.
Patent GB-644106-A (GB)
Title: Improvements in or relating to two-way radio communication systems
IPC: H04B1/50
Filed: 1948-02-06
Abstract: 644,106. Duplex radio signalling; keying carrier frequencies; radio receiving circuits. STANDARD TELEPHONES & CABLES, Ltd. Feb. 6, 1948, No. 3545. Convention date, March 1, 1947. [Class 40 (v)] In a two-way frequency-modulated communication system between a fixed and a mobile station, each station has separate transmitting and receiving circuits, and the mobile unit only has a separate keying oscillator for rendering its transmitter and receiver alternately operative. The fixed receiver is muted whenever the mobile transmitter is inoperative. The mobile unit, Fig. 3, which consists of a frequency-modulated transmitter 19 operating on frequency f 2  and a frequencymodulation receiver 8 operating on frequency f 1  has the keying oscillator 25 operating on a frequency of 8000 c.p.s. The oscillator output is applied to the third frequency multiplier 45, the final drive 46, and the power amplifier 47 of the transmitter. A tap on the grid resistor 55 of the fourth multiplier stage 56 provides a keying voltage of opposite phase which controls the receiver by being applied to the first mixer valve 58, the first I.F. valve 59, and the second limiter 60. A diode 65 prevents the bias developed by the limiter from appearing at the other keyed stages. A diode 67 prevents the keyed grids from going positive. The receiver is coupled to the common aerial by an isolating stage 10 to prevent the absorption of appreciable power from the transmitter. At the fixed station, the transmitter, operating on frequency f 1 , is independent of the receiver and of conventional design. The receiver, Fig. 4, is muted not only during those periods when the mobile transmitter is keyed off, but also when the mobile transmitter is not operating. The grid circuit of the first limiter valve 74 includes a resistor 75 and condenser 76 having a time constant such that the bias voltage developed by grid rectification during that portion of the cycle when a signal is being received is maintained during the period when no signal is received, thus reducing the gain and eliminating noise in the output. The valve is rendered conducting by the positive loops of the waves applied during the receive period. A circuit 88, 89, tuned to the keying frequency, is connected to the output of the first limiter 74 so that when a correctly keyed signal is received, a bias voltage, rectified by a diode 91, is applied to a thyratron oscillator 85 to prevent oscillation and allow relay 99 to complete the audio output circuit. In the absence of a correct signal, not only does the relay 99 open, but since the output of the oscillator is also coupled to a diode 100, a bias voltage is developed across resistor 101 which cuts off the audio output valve 83.
Patent GB-553497-A (GB)
Title: Improvements in or relating to the manufacture of paint
IPC: C04B28/02
Filed: 1941-03-14
Abstract: 553,497. Paints. HOWLETT, L. J., and HOWLETT, W. H. March 14, 1941, No. 3557. Convention date, May 25, 1940. [Class 95] A paint comprises Portland cement, magnesium carbonate, and an oil, but is free from such binders as glue, size, casein, blood serum, egg albumen, algine, gelatine, vegetable proteins or similar adhesives. Specified oils are linseed and tung oils. Optional additions are zinc oxide, diatomaceous earth, terebene, bitumen, tar and mineral turpentine. Water may be added in an amount not exceeding 25 per cent. by volume of the oil. Specification 359,479 is referred to.
Patent GB-129937-A (GB)
Title: Improvements in Metal Can Making Machines.
Inventor: THOMPSON WILLIAM PHILLIPS
IPC: B21D51/46
Filed: 1919-02-14
Abstract: 129,937. Thompson, W. P., (Continental Can Co.). Feb. 14, 1919. Traversing-cutter type for cutting designs. - Relates to severing-devices employed in a machine for applying annular paper or other liners to the ends of metal cane before the can ends are seamed to the can bodies. The can ends to be operated upon are stored in a holder 39, Fig. 3, provided with an oscillating escapement device 42, which releases the can ends one at a time. A released can end E is moved by a reciprocating slide 43 until it rests above a plunger 61, which rises and presses the can end into engagement with a device 58 arranged to apply adhesive to the annular groove in the can end. The next forward movement of the slide 43 brings the can end above a spring-headed plunger 65, in which position the can end rests correctly below a strip of paper &c., from which a part corresponding to the central raised portion of the can end has already been removed by a punch 9, Fig. 1. When the plunger 65, Fig. 3, is raised, balls 11 on a rotating head 10 press the paper against the sharp upturned rim of the can end and thus remove from the paper strip an annulus, which is pressed into the annular groove in the can end. The slide 43 is then moved again and carries the can end beneath a spring-pressed head 70, against which the can end is pressed by a plunger 73. The head 70 has a projecting rim 77, which presses the paper ring firmly against the bottom of the annular groove in the can end. The plunger 73 and the head 70 carry dies, which impress an identifying mark upon the can end. The finished can end is moved by the slide 43 until it comes beneath a stacking-device 79 having spring retaining-fingers 80, above which the can end is raised by a plunger 81. The paper from which the rings are made is drawn from a roll 3, Fig. 1, by continuously rotating feed rolls 4, 5. The paper then hangs in a loop P' until it is fed forwards by intermittently-rotating rollers 7, 8 driven by a star wheel 31 rotated by rollers 30 on a disk 29. Specification 129,936 is referred to.