baber/WOPTO huggingface dataset:
Patent GB-1541037-A (GB)
Title: Portable percussion hammer
IPC: B25D17/00
Filed: 1976-03-12
Abstract: This percussive or rotary-percussive hammer has a freely floating percussive piston (12) which oscillates in a reciprocating manner under the effect of a crank mechanism (52, 56, 57, 62, 63) acting on it via an air cushion (73). In order to simplify the assembly of the crank mechanism and of the guide cylinder (11) for the percussive piston and to facilitate its accessibility for repair purposes, the housing of the hammer is essentially composed of two shaped parts - a shaped part (10) forming the top housing part and a shaped part (55) forming the bottom housing part. These two housing parts (10, 55) are tightly connected to one another on a parting line (82) lying in a plane parallel to the guide-cylinder axis (11). <IMAGE>
Patent GB-267729-A (GB)
Title: Improvements in hypodermic and like syringes
IPC: A61M5/20
Filed: 1926-04-17
Abstract: 267,729. Denham, J. April 17, 1926 Actuating by hand.-A surgical syringe comprises a barrel a provided with a hollow plunger f automatically operated on the outstroke by a spring g, surrounding the plunger-rod d and secured to a washer h. The barrel a has, at its lower end, an inlet tube o connected with a reservoir by a flexible tube q having a non-return valve r. The outlet of the syringe contains a non-return valve j and is screw-threaded to receive a nozzle k carrying a hollow needle m.
Patent GB-489054-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H03H7/01
Filed: 1937-04-09
Abstract: 489,054. Wireless receiving-apparatus. ROBERTS, E. H. April 9, 1937, No. 10135. [Class 40 (v)] [Also in Group XXXV] A tuned H.F. transformer comprises primary and secondary windings spaced apart and associated with a movable iron core for varying the selectivity. In the form shown in Fig. 1, the primary and secondary windings P<1>, S<1> are mounted at the ends of an insulating tube and are connected in series with anxiliary coupling windings P<2>, S<2> with which is associated the movable core 13. Movement of the core increases the inductance of one circuit and reduces the inductance of the other circuit so that the operating frequency remains constant but the band width is varied. Stationary cores 11, 12 may be associated with the main windings. In a modification, a movable short circuited ring may be associated with the coils P<2>, S<2>, and movable with the core 13. In a further modification, a further auxiliary winding connected in series in antiphase with the primary may be associated with the secondary coil S<2> to reduce the coupling. Fig. 4 shows a further modification in which separately adjustable cores 11, 12 associated with the primary and secondary windings P<1>, S<1> are mounted in a tube 17 for simultaneous adjustment. A constructional form is shown in Fig. 5, divided primary, and secondary and coupling coils P<1>, S<1>, P<2> and S<2> being mounted on an insulating tube 10 supported in a screening can 28. The core 13 is mounted on a spring urged plunger 24 adapted to be moved by a cam. Preset condensers 29 are also mounted within the can 28. The Specification states that a number of these transformers may be mounted together and operated by cams on a single spindle. Where a number of transformers are used a mean error of zero may be obtained by selecting some having a positive error and some having a negative error.
Patent GB-1061555-A (GB)
Title: Improvements in or relating to the production of potassium monopersulphate
IPC: C01B15/08
Filed: 1964-03-10
Abstract: 1,061,555. Potassium monopersulphate. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. March 10, 1964 [March 15, 1963], No. 10161/64. Addition .to 979,450. Heading C1A. A process for the production of a mixture comprising KHSO 5  and K 2 S 2 O 8 , the KHSO 5 , constituting at least 40% by weight of the mixture, comprises reacting H 2 O 2  with cone. H 2 SO 4  or oleum to form a H 2 SO 5  solution and partially neutralizing with an aqueous solution of a basic potassium compound (e.g. K 2 CO 3 ) to precipitate the mixture of salts, a quantity of K 2 S 2 O 8  .being added to the reaction mixture before neutralization and the process being carried out at a temperature not exceeding 30‹ C. The K 2 S 2 O 8  may be added in the solid state and in a quantity so that the molecular ratio of K 2 S 2 O 8  to H 2 SO 5  present or to be formed is 0À1-1À2. Also a quantity of K 2 SO 4  (preferably in the solid state) may also be added to the reaction mixture, so that the molecular ratio of K 2 SO 4  to H 2 SO 5  is 0À25-0À75.
Patent GB-752199-A (GB)
Title: Improvements in or relating to power steering construction for motor vehicles
IPC: B62D5/06
Filed: 1954-04-08
Abstract: 752,199. Pistons. FORD MOTOR CO., Ltd. April 8, 1954 [April 13, 1953], No. 10336/54. Class 122(1) [Also in Group XXIX] The piston of a piston-and-cylinder servomotor for the steering unit of a motor vehicle (see Group XXIX) is made up of sections with limited relative movement allowed between the sections so that, during recovery strokes, there is free communication between both ends of the cylinder but, during power strokes, such communication is shut off, and, in addition, the pressure on the sealing means between the piston and the cylinder is lowered during recovery strokes so as to minimize wear. In an embodiment wherein the piston is fixed and the cylinder moves over the piston, the motive fluid supply and exhaust passages pass through the stem of the piston and comprise a passage 52 and port 83, and a passage 51. The piston itself comprises angled rims 59 pressed'towards each other by springs 68 and with a ribbed ring: 62 located between them. A pair of piston sections 73 which can slide on the rims 59, are pressed apart by a coil spring 77 and house a resilient ring 82 acting as the normal piston sealing ring. A further resilient sealing ring 64 is located around the ring 62. With no pressure fluid applied to the cylinder, sections 73 are kept apart by the spring 77, and free communication between the two sides of the piston is provided by passages 79 in the section 73 and by clear. ances between the ring 64 and the adjacent parts of sections 73. If pressure fluid is applied to one end of the cylinder, it will act on the adjacent section 73 to force the latter into contact with the ring 64 to close off the passage between the two ends of the cylinder.
Patent GB-948921-A (GB)
Title: Method and apparatus for locking the shaft bearing in rolling mills provided with replaceable roller stands
IPC: B21B35/14
Filed: 1960-03-24
Abstract: 948,921. Rolling. DEMAG A.G. March 24, 1960 [March 28, 1959], No. 10410/60. Heading B3M. In a rolling mill provided with replaceable roll-stands W, Fig. 11, and having an automatic clutch between each roll Wz and its driving shaft Sp, the shaft bearing St is secured to the bed-plate S during removal of one stand W and until another such stand is in complete engagement and the freshlyinserted stand and the shaft bearing St are connected together for unitary movement, the shaft bearing St then being released from the bed-plate S. The roll stand W is removed and the fresh stand inserted by a pistonrod 16 acting on the stand through a quick - action clutch 17 and passing through the base F of the shaft bearing St. As the movement of the stand and shaft bearing proceeds to the left clamping bolts 1, Fig. 4, register with grooves 3 in the bed-plate S and under the pressure of springs 2 the bolts 1 are gradually forced into the grooves 3 until grooves 5, Fig. 5, in the bolts 1 register with projections 8 on locking bolts 6. The bolts 6 are biased towards the grooves 5 by springs 9 bearing on members 15 and when the projections 8 enter the grooves 5 catches 6a, Fig. 6, formed on the ends of the bolts 6 disengage from a keyway 7 formed in the piston-rod 16. The piston-rod 16 thus continues its movement and carries the stand W to the left to automatically disengage the driving-shaft clutches while the driving shaft bearing St is held stationary. The movement of the piston-rod controls the withdrawal of the catches 6a through an attached stopplate and wedge-shaped members 11 which bear on pins 10 attached to the bolts 6 and control the entry of the bolts into the grooves 5. On the return movement to engage a fresh stand the stop-plate engages bolts 12 attached to the members 11 and initiate the re-engagement of the catches 6a against the springs 9. Continued movement then disengages the bolts 1 from the grooves 3 by wedge-action of the groove against the springs 2. It is stated that the interconnection between the shaft bearing lock and the unitary locking of the stand and shaft bearing may be controlled hydraulically or electrically.
Patent GB-315250-A (GB)
Title: Improvements in means for joining together parts of fused quartz, silica, or the like
IPC: C03B23/20
Filed: 1928-04-10
Abstract: 315,250. Sample, L. April 10, 1928. Forming silicaglass articles; welding.- A method of joining plates, tubes, or other parts of fused silica consists in cutting a groove close to one or both of the edges to be joined, placing these edges together, and then fusing the portion between the grooves. When two plates A, B are to be joined at right angles to one another, the edges to be fused are bevelled and grooves a are cut in the plates close to the edges. The two parts are held together along the bevelled edges, and the common edge C is fused by means of a small oxyhydrogen flame. The reduced thickness of material between the grooves a reduces the transfer of heat from the point of fusion to the mass of the parts A, B, and the risk of distorting the parts is lessened.
Patent GB-548985-A (GB)
Title: Improvements in means for producing or forming the peripheral profile of a grinding wheel
IPC: B24B53/065
Filed: 1941-08-20
Abstract: 548,985. Trueing grinding wheels. SCRIVENER Ltd., A., and SCRIVENER, A. Aug. 20, 1941, No. 10580. [Class 60] Means for producing or forming the peripheral profile of a grinding wheel 4 comprises a pivotally mounted arcuately-seated carrier 6 for the diamond or like cutter 5 which is adjustably mounted within and bedded against a relatively fixed base 9 incorporating an arcuate seating for the carrier 6 and locating and setting means for a pivotal lever 14 or like device for traversing or rocking the carrier 6. The ends of the carrier 6 are flanged at 6b and provided with trunnions 6c mounted in bushes 7 in end plates 8 connected to the baseplate 9 which is mounted on a spring-loaded barrel, or traversable table 10. The upper trunnion is extended as a spindle 6e about which a pivoted lever 14 is mounted on a bracket 13 under control of a spring 15, the lever 14 being normally maintained within one or other of the notches 16a formed in a gate 16 adjustably mounted on the upper plate 8. In operation, when the baseplate 9 and carrier 6 have reached the predetermined limit of the linear stroke across the face of the wheel 4 the lever 14 is released from one of the notches 16a and is then turned to rotate the carrier 6 about its trunnions 6c to traverse the cutter 5 through a predetermined path relative to the grinding wheel 4, the lever 14 then engaging the other notch 16a.
Patent GB-855292-A (GB)
Title: Improvements in or relating to electric delay or phase-shifting networks
Inventor: CAMERON WILLIAM ALFRED
IPC: H03H7/32
Filed: 1958-04-02
Abstract: 855,292. Circuit assemblies. GENERAL ELECTRIC CO. Ltd. July 2, 1959 [April 2, 1958], No. 10596/58. Class 37 A delay or phase-shift network comprises mutually coupled inductors 1, 2 which are formed on opposite sides of an insulated support 5 by etching away the unwanted metal from metal layers on the support, the two coils being connected in different series arms of the network The coils are formed by covering the metal layers with a resist, either by silk screening, or by photographic process, and then immersing the support into an etching bath of, for example, ferric chloride. The network is preferably in the form of a bridged -T, Fig. 3 (not shown) having a shunt arm formed by a capacitor 17 connected to a pin 10 which connects the two inductors, and a bridging arm formed by capacitor 16. External connections are made to terminals 13, 14, 15 which are formed in the same printing process as the inductors. A number of such networks may be connected to form an attenuation equaliser.
Patent GB-106535-A (GB)
IPC: B60T7/12
Abstract: 106,535. Hullett, D. I. May 31, 1916. Fluid-pressure. - In apparatus whereby the brakes of railways cars are automatically applied in case of (a) derailment or breakage of an axle, (b) undue strain upon the draw-heads, or (c) dropping of the brake beam or rigging, valves 6 on the train-pipe are arranged to be opened by arms 7 connected by chains 10 and arms 9 to rock-shafts 8, which are connected (a) to rings 24 around the axles 3 by spring- pressed rods 23, chains 22, bell-cranks 19, and rods 20, 21, (b) to the draw-heads by arms 30, chains 34, and rods 31 bent at 32 to enter slots 33 in the draw-heads, and (c) to the brake beams 4 by arms 9, chains 13, and spring- pressed rods 12.
Patent GB-548130-A (GB)
Title: Improved sling for carrying a fire extinguisher on the person
IPC: A45F3/14
Filed: 1941-08-21
Abstract: 548,130. Body harness. DAVIES, W. L. Aug. 21, 1941, No. 10660. [Class 141] A device for carrying a fire extinguisher comprises a strap a adjustable by a buckle b and holes c, a hook d, and a depending tab e, the hook and tab being held in place by sewing the two parts of the strap together, as shown at f.
Patent GB-377191-A (GB)
Title: Improvements in sound recording and sound-reproducing machines
IPC: H04M1/65
Filed: 1931-04-11
Abstract: 377,191. Dictation installations. DEL PONTE, F. N., 235, San Martin, Buenos Aires. April 11, 1931, No. 10733. [Class 40 (ii).] An electric installation for recording sounds or telephonic transmissions and for reproducing from records at will, and comprising a recording or reproducing head 3 operating on a cylinder or disc, a microphone 6, a speaking device 5, a telephone 4, and connections through an amplifier 1, is provided with a commutator switch with several series of contacts any series of which can be adjusted to set the apparatus for its various uses. The commutator switch comprises a drum carrying three sets of contacts a<1> .. l<1>, all .. j<11> and a<111> .. j<111> lying in longitudinal lines spaced apart around the drum, and certain terminals in each line are electrically connected as shown in Fig. 2. The drum can be set so that any line of contact engages strips from fixed terminals a .. l. The circuit of the microphone 6 supplied with current from a battery 18 or from a mains supply is connected to the terminals a, b; the alternative recording and reproducing head 3 is connected to terminals c, d; an amplifier 1 energized from the mains 8 has its input 37 connected to terminals e, f, and its output 38 to terminals g, h, the circuit of the telephone 4 is connected through a condenser and with the terminals i, j shunted if desired by a resistance 43 : and a speaker 5 is connected to the terminals k, l. In the position shown in Fig. 2 wherein the line of contacts a<1> .. l<1> is opposite to the strips extending from the terminals a .. l, the apparatus is connected for reproducing from a record 27 as the pick up 3 is connected through the switch, the amplifier, and the switch again to the speaker 5. By rotating the switch so that the line of contacts a<11> .. jll are brought below the strips, the circuit of the telephone 4 is connected through the switch, amplifier, and switch again to the head 3 to record on a blank 27. On further rotating the switch so that contacts a<111> .. j<111> are below the strips, the microphone 6 is connected through switch, amplifier, and switch again to the head 3 to make a record. Fig. 4 shows the switch drum 7 and the contact strips 24 for engaging the rows of contacts a<1>, all, a<111>.
Patent GB-357081-A (GB)
Title: Improvements in or relating to wire spokes for wheel building
IPC: B21F39/00
Filed: 1930-04-04
Abstract: 357,081. Wheel spokes. PUGH, J. V., Meriden House, Meriden, Warwickshire. April 4, 1930, No. 10762. [Class 144 (i).] Tension spokes for wire wheels are formed with enlarged ends produced by axial pressure, the inner end being threaded for engagement with the hub, and the outer end being threaded or headed for engagement with the rim. In the form shown in Fig. 1, the spoke has a threaded portion a<1> at its enlarged inner end and a head a<4> integral with the enlarged outer end a<3>. In the modification shown in Fig. 11, the head h<3> is screwed on to the outer end h<1> of the spoke. The upsetting of the spoke-ends is effected progressively by dies d. d<3>, Fig. 6, and e, e<1>, Fig. 7, Specifications 304,624, 320,408, and 334,941, [all in Class 144 (i), Wheels for vehicles], are referred to.
Patent GB-1472482-A (GB)
Title: Method and apparatus for protecting a subaqueous foundation
IPC: E02B17/02
Filed: 1975-03-14
Abstract: 1472482 Protecting submerged foundations ZINKCON MAATSCHAPPIJ TOT UITVOERING VAN MODERNE ZINKCONSTRUCTIES BV 14 March 1975 [15 March 1974] 10768/75 Heading E1H A subaqueous foundation, e.g. for a drilling platform 1, comprises a base 3 and a number of mattresses 5, 6 which can be lowered with the base and unrolled to protect the sea-bed from errosion. The mattresses are stored in rolls supported by lines 11, 12, 15 from the base 3. In operation, when the base has been lowered, lines 11 are released by remotely actuated couplings 13. The load of the rolls breaks lines 15, and the mattresses are unrolled by a tug vessel connected to the lines 12 by means of booms 8. The mattresses are formed by rectangular pieces of cloth or similar material with weighting material attached thereto.
Patent GB-827637-A (GB)
Title: Improvements in or relating to operating shafts with control knobs more particularlyfor wireless sets
IPC: G05G1/12
Filed: 1958-04-03
Abstract: 827,637. Securing knobs on shafts. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 3, 1958 [April 6, 1957], No. 10857/58. Class 80 (2). A knob 1 is secured to a shaft 3 by a screw 5 threaded in a hole in the shaft and passing through a transverse hole 15 in the knob, the hole 15 being of smaller diameter than the head 7 of the screw, in addition to the axial bore 11 for the shaft an eccentric bore 13 accommodates the screw head 7 and has a radial dimension less than the length of the screw.
Patent GB-525525-A (GB)
Title: Plastic moulding material
IPC: C08K9/02
Filed: 1939-04-11
Abstract: 525,525. Balls for games. BRIGHT, E. M. April 11, 1939, No. 10955. [Class 132 (ii)] [Also in Group V] Balls for billiards, croquet, bowling &c. are cast from a composition formed by fusing together sulphur and silica and adding asphalt, e.g., Trinidad Lake asphalt before the mixture has solidified. Fibrous material and diatomaceous earth which absorbs free sulphur and light oils may be added. A croquet ball is cast in two hollow halves having radial partitions 22 and fitting together by a peripheral tongue 26 taking into a groove in the other half, the tongue and groove being interrupted at 28 to form a key. The parts are secured together either by heating to melt the material or by solvent or cement or by coating the outer surface with nitrocellulose as described in Specification 518,499, [Group III].
Patent GB-101698-A (GB)
Title: Improvements in Methods and Apparatus for Transmitting and Receiving Sound Waves through the Ground.
Inventor: FESSENDEN REGINALD AUBREY
IPC: H04B11/00
Filed: 1916-08-03
Abstract: 101,698. Fessenden, R. A. Oct. 7, 1915, [Convention date]. Audible signals transmitted through the ground; locating sounds.-In electrical apparatus for receiving and transmitting sound waves through the ground the vibrations are transmitted between the earth and electrical apparatus through a separate liquid or solid conductor arranged to produce a difference in phase between different parts of the apparatus. In one form a device 11, such as an oscillator of the kind described in Specification 18765/13, sensitive to or capable of producing vibrations is submersed in water, oil, or other liquid 23 below the surface 13 of the ground. A two-way switch 15 is provided whereby the device 11 may be placed in circuit with an alternating-current generator 19 and key 21 for transmitting, or with a telephone receiver 17 for receiving signals. By replacing the generator 19 and key 21 by a storage battery and telephone transmitter, the apparatus may be used for telephoning. In a modified form, the oscillator, instead of being submersed, is mounted on an horizontal wire or rod supported at its ends by inclined rods screwed or driven into the ground. This arrangement is directive, receiving and transmitting most readily along the line of the supports. The device shown in Fig. 4 for ascertaining the direction of a source of sound comprises two microphone or like instruments 36, 37 in circuit with a differential telephone 39 and battery 38 and mounted on a rod 43 pivoted for movement about an horizontal axis 45 on a support 41 capable of rotation about a vertical axis. Direction is determined by moving the instruments until the sound in the receiver 39 is a maximum or minimum. The instruments 36, 37 are shown submersed in water in a pail 51 below the bottom 52 of a trench, and sights 49a, 50 carried by parallelogram links 42, 44 are provided to enable the direction to be noted on the walls of the trench. A device for transmitting sounds is described in which a rod or wire is secured to the middle cf a diaphragm and is caused to vibrate longitudinally by a rapidly rotated friction wheel.
Patent GB-578243-A (GB)
Title: Automatic fire extinguishers
IPC: A62C35/60
Filed: 1944-06-09
Abstract: 578,243. Fire - extinguishing. BARNARD, O. E. June 9,1944, No. 11087. [Class 47 (ii)] A fire-extinguisher is provided with a head 5 having an opening 8 closed by a plug 6 which is recessed to receive a powder charge 26 ignited by a fuse element 12a. The plug comprises a tubular lower portion 19 screwthreaded to engage with the lower portion 10 of the opening 8 and joined by a thin frangible wall 24 to a solid upper portion 18 screwthreaded to receive a ring 17. When the charge 26 is ignited, the solid portion 18 and ring 17 are blown out leaving the tubular portion 19 in position for the fire-extinguishing medium to pass through. The opening 8 is provided with a fibrous liner 28, and a sealing washer 23 is provided between a flange 20 on the plug and a face 21 of the head 5.
Patent GB-1073153-A (GB)
Title: Fuel supply control systems for gas turbine engines
Inventor: IFIELD RICHARD JOSEPH
IPC: F02C9/16
Filed: 1964-03-17
Abstract: 1,073,153. Gas turbine engine fuel systems. JOSEPH LUCAS (INDUSTRIES) Ltd. March 16, 1965 [March 17, 1964], No. 11164/64. Heading F1G. [Also in Division G3] A control for a fuel supply system of the kind including a pair of swash plate pumps (not shown) driven by a pair of independently rotatable shafts in a gas turbine engine and a pair of servomechanisms 10, 11 associated with the pair of pumps, both pumps being arranged to supply fuel to a common burner supply line to the engine, comprises a pair of control valves 14, 15 which are responsive to the speeds of the pair of shafts, a pair of relay valves 26, 27 and a variable flow spill valve 23. In operation, under normal conditions fluid leaks past control valves 14, 15 and flows to spill passage 22 via passages 16, 17, relay valve by-pass restrictions 20, 21, chamber 18 and spill valve 23. If, say, governor 13 opens valve 15 due to overspeeding of its associated pump, pressure will build up in passage 17 and lift relay valve 27 to uncover passage 29, thereby allowing the fluid, which may derive from a bypass in the main pump delivery line, to move both servo-pistons to reduce the output of both pumps. At the same time, plate 24 carrying spill valve 23 is lifted, but the latter is so designed that the spill rate remains unchanged. If, however, both control valves open, the spill valve is moved to a position allowing the spill rate to be doubled.