baber/WOPTO huggingface dataset:
Patent GB-253110-A (GB)
Title: Improvements in or relating to electrically operated hammers and the like
IPC: E21B1/16
Filed: 1926-06-01
Abstract: 253,110. Soulier, A. June 2, 1925, [Convention date]. Reciprocating and oscillating machines.- Reciprocating motion for driving a percussive hammer or for other purposes is imparted to the iron core of a solenoid carrying all alternating current by arranging a condenser in series with the solenoid such as to neutralize the reactance of the solenoid completely or partially when the core is at its mid-position. The Specification, as open to inspection under Sect. 91 (3) (a), states that the core is so arranged that it is exposed to a force tending to keep its centre away from the centre of the solenoid, for example by mounting the core vertically so that gravity pulls it away from the centre of the solenoid. This subject-matter does not appear in the Specification as accepted.
Patent GB-730101-A (GB)
Title: Improvements in or relating to hot-gas reciprocating engines and refrigerators and heat pumps operating according to the reversed hot-gas reciprocating engine principle
IPC: F02G1/05
Filed: 1952-05-30
Abstract: 730,101. Hot gas engines. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 30, 1952 [June 5, 1951; May 1, 1952], No. 13824/52. Class 7(1). [Also in Group XIII] The invention relates to means for supplying working medium to and withdrawing it from the working space or working spaces of hot gas engines. In Fig. 2 a pipe 18 leads to the working space of a hot gas engine (not shown). The pipe 18 may either adjoin the hot space or the cold space. By means of an adjusting screw 42 the force acting on valves 23, 24 can be controlled. Thus, if the screw is adjusted to open the valve 23 working medium from a reservoir 37 flows to the working space past a non-return valve 21. When the engine pressure has increased the valve 23 closes again. Similarly when the valve 24 is opened working medium is discharged past the valve 22. The force acting on the lever 41 acts at a point which is at a distance A from the stem 25 of the valve 23 and at a distance B from the stem 26 of the valve 24. The ratio A : B is made equal to the engine compression ratio. It is stated that the pressure areas of the valves may be the same or different. The minimum pressure in the engine acts in the pipe 19 and on the valve 23 and the maximum pressure in the engine acts in the pipe 20 and on the valve 24. The pressure in the reservoir may be increased by a compressor 38 or released by means of a valve 39. In the case of a multicylinder engine each working space has two non-return valves associated with it and communicates through these valves with two pipes corresponding to the pipes 19, 20. In a modification, Fig. 4, the load on the lever 41 is applied through a piston 81 which is acted on by the pressure in either the pipe 19 or 20 and also by an abutment 87 which may be controlled by a regulator for example a centrifugal governor. The valves 23, 24 may be constituted by piston members. The engine may be air cooled external fins being provided for this purpose. Water cooling is referred to. Fins may be provided around the heater which is heated by a burner. Specification 730,098 is referred to.
Patent GB-561554-A (GB)
Title: Improvements in and relating to electron lenses
IPC: H01J37/12
Filed: 1942-10-02
Abstract: 561,554. Electron lenses. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 2, 1942, No. 13873. Convention date, Oct. 3, 1941. [Class 39 (i)] In order that the aberration at the apertures of the electrodes of an electron lens should be reduced, the field at these points is maintained zero by shaping the electrodes according to the mathematical relations that follow. In a two electrode lens, one electrode presents to the other a concave surface of revolution generated by the curve defined by equation cos wz Jo (iwr) = - 1 where w is an arbitrary constant and z and r are co-ordinates parallel and perpendicular to the axis of the lens. In a lens comprising three electrodes, the middle electrode 26 follows the equation cos #z/z1 Jo(i#r)/z1= - 1 while the other two electrodes present concave surfaces of revolution thereto generated by the curve cos #z/z1 Jo(i#r/z1) = A/V-A . In the constrution shown, the electrodes 25 and 27 are maintained at zero potential and the electrode 26 at a negative potential. The shape of the electrodes is theoretically computed by calculating the equations for equipotential surfaces for the electric field distribution and solving for the particular cases when the potential is zero and the particular potential at which the electrode 26 is to be maintained. The electron stream from the cathode 15 is concentrated by a tube 16 and an apertured diaphragm 18 on to the object which is mounted on screen 24. The beam is then focused by the electron lens on to the fluorescent screen 12. The electrodes may be solid as shown in Fig. 6 instead of in sheet form.
Patent GB-881275-A (GB)
Title: Improvements in or relating to pyrophoric lighters
Inventor: BARKER-BLAND HARRY
IPC: F23Q2/08
Filed: 1959-08-23
Abstract: 881,275. Pyrophoric lighters. KIASHEK, G. Aug. 22, 1960 [Aug. 23, 1959], No. 13895/59. Class 75(3) A pyrophoric lighter comprises a body 1 having a reservoir for liquid fuel or liquified gas and a mechanism portion 2 hinged to the body 1 by a pivot pin 3 and having a finger-piece 13 3 movable lengthwise to open a cap 6 and actuate a flint wheel 5 mounted on the pivot pin 3. The cap is connected to the flint wheel by a ratchet and pawl mechanism. The finger piece 13 slides in the mechanism portion 2 and is hinged at 14 to the cap 6. A pin 22 fixed to the mechanism portion extends through a slot in the finger-piece 13 to guide the finger-piece 13 and a compression spring 21, acts between a piston 19 pivoted to the pin 22 and either a pin 17 on the finger-piece 13, or the hinge pin 14 connecting the cap and the finger-piece 13. A tube 18 surrounds the spring and is pivoted to the pin 17. The movement of the finger-piece 13 is limited by stop 23 which can be removed to allow the spring 21 to pass through a dead centre position whereby the cap remains open when the fingers are withdrawn from the finger-piece 13. The lower end of the mechanism portion 2 is held to the body 1 by a pivoted catch 33 held closed by the spring 29 which presses the flint 28 against the flint wheel 5. The flint spring 29 and the flint 28 are disposed in a bent tube 27 having a side aperture 31 for the insertion of a new flint. The body 1 has a filling aperture 12 closed by a rubber pad 37 on the inner side of the mechanism portion 2. The Provisional Specification describes a lighter having a telescopic finger-piece covered by a shield pivoted to the cap.
Patent GB-927960-A (GB)
Title: Polymerization process
Inventor: HOLDSWORTH ROBERT SEHON
IPC: C08F14/06
Filed: 1961-04-18
Abstract: A process for producing substantially uniform large particle size polymer beads comprises polymerizing vinyl chloride or a mixture thereof with a vinyl or allyl ester of a fatty acid, an alkyl ester of maleic or fumaric acid or a C8 or lower mono-iso-olefin at 30 DEG to 70 DEG C., and below pH 7 while in suspension in an aqueous medium containing a monomer-soluble polymerization catalyst, a polyamine and as surfaceactive agent an organic sulphate or sulphonic acid or salt of either thereof, the polyamine and surface-active agent both being present in an amount between 0,01 to 1% wt. based on the monomer and over 90% of the produced polymer being retained on screens of 80 mesh (U.S. Standard Sieve) or coarser.  Comonomers specified are vinyl and allyl acetates, diethyl and dibutyl maleates, isobutylene, 2-methyl-butene-1, 2-ethyl-butene-1, and 3-methyl-butene-1. Catalysts specified are azo compounds, redox systems and organic peroxides, e.g. lauroyl, benzoyl, chlorobenzoyl, capryl, myristyl, acetyl, stearoyl, acetylbenzoyl, t-butyl, phthalyl, and succinyl peroxides. The polyamines may contain other substituents such as hydroxyl and keto; examples are ethylene, hexamethylene and propylene diamines, diethylene triamine, triethylenetetramine, tetraethylene pentamine, ethylene diamine hydrochloride and aminoethyl ethanolamine.  Examples of surface-active agents include several alkyl sulphates and monoand di-alkylaryl sulphonic acids and dioctyl sodium sulphosuccinate. Salts thereof mentioned are the sodium, potassium, ammonium and lithium salts. The pH may be adjusted with acids such as phosphoric, acetic, hydrochloric, sulphuric, oxalic and chloroacetic.
Patent GB-747412-A (GB)
Title: Improvements relating to bombslips and similar releasable attachment devices for aircraft
Inventor: HANSARD MICHAEL ERIC
IPC: B64D1/04
Filed: 1953-05-18
Abstract: 747,412. Hooks. M.L. AVIATION CO., Ltd. May 18, 1954 [May 18, 1953], No. 13917/53. Class 89 (2). [Also in Groups XXI and XXXIII] A bombslip comprises a fixed jaw 1 and a pivoted jaw 2 having a roller 6 adapted to be held in the locked position shown by a pivoted latch 8 whose movement is limited by a spring- loaded plunger 10 incorporating a shock absorber 32. The latch 8 is held in the locked position by a trigger 12 which engages a roller 14 journalled therein. When the trigger is released the jaw 2 opens under the weight of the bomb, assisted by,a spring 16, until it abuts a stop 39. The trigger is controlled by a manually - operated plunger 33 or rotary solenoids 18, 19 through arms 23, 24, 26, the arm 24 being spring loaded to return the solenoids to their initial position when the current is cut off. The trigger is prevented from springing back into its locked position when the current is cut off by a cam surface formed on the latch 8. Micro-switches 34, 38 are provided to indicate when the trigger and the jaw 2 respectively are operated. Both jaws may be pivoted and simultaneously released by duplicating the latch and trigger mechanism.
Patent GB-1224494-A (GB)
Title: Improvements in or relating to tow trucks for floor conveyor systems
IPC: B61B10/04
Filed: 1968-03-22
Abstract: 1,224,494. Conveyer systems. MECHANICAL HANDLING SYSTEMS Inc. 22 March, 1968 [24 March, 1967], No. 13959/68. Heading B7L. A floor tow truck 10, Fig. 1, comprises a body 15, movable over a floor; a tow pin 11, generally vertically reciprocable on the body, for engagement with a pusher lug 13 on a drive chain 14 in a floor slot 12, the lower end of the pin 11 being movable longitudinally of the body 15 against the action of a spring 25; a bumper assembly 40 pivoted at 42 to the body; and a link 44 pivoted at one end to the bumper 43 at 45, whilst its other end carries a cam follower roller 46 engageable with a cam 47 fixed on the body, the link 44 engaging a collar 50 on the pin 11 so that when the bumper 43 engages an obstacle, e.g. a stationary truck, the pin 11 is lifted out of engagement with the chain. The arrangement is such that the link 44 remains substantially parallel to itself during its movements. The bumper assembly also operates brakes on the rear truck wheels 17, through ports 66 of the bumper assembly, engaging pivoted cranks 65, connecting rods 58 and brake levers 57.
Patent GB-1353304-A (GB)
Title: Process for production of diketopiperazine dihydroxamates and intermediate therefor
IPC: C07D241/08
Filed: 1972-03-24
Abstract: 1353304 Ornithine derivatives SAGAMI CHEMICAL RESEARCH CENTER 24 March 1972 [30 March 1971 9 April 1971 20 May 1971] 14065/72 Heading C2C The invention comprises novel ornithine derivatives of the Formulµ III and V: wherein R<SP>1</SP> is a protecting group and R is C 1-4  alkyl, processes for their preparation and a process for the preparation of compounds of the Formula VIII which comprises reacting N<SP>2</SP>(R<SP>1</SP>)-N<SP>4</SP>-benzyloxy- N<SP>4</SP>-tosylornithines with N<SP>4</SP>-benzyloxy-N<SP>4</SP>-tosylornithine C 1-4  alkyl esters, removing the protecting group from the N<SP>2</SP>(R<SP>1</SP>)-N<SP>4</SP>-benzyloxy-N<SP>4</SP>- tosylornithyl - N<SP>4</SP> - benzyloxy - N<SP>4</SP> - tosylornithine C 1-4  alkyl ester thus obtained, cyclizing the resulting N<SP>4</SP> - benzyloxy - N<SP>4</SP> - tosylornithyl - N<SP>4</SP>- benzyloxy-N<SP>4</SP>-tosylornithine C 1-4  alkyl esters, treating the thus obtained N<SP>4</SP>-benzyloxy-N<SP>4</SP>- tosylornithine anhydride with acetic acid, hydrogen bromide and phenol, acylating the resulting N<SP>4</SP>-benzyloxyornithine anhydride and catalytically hydrogenolysing the N<SP>4</SP>-(C 1-4  alkanoyl)-N<SP>4</SP>- benzyloxyornithine anhydride thus obtained.
Patent GB-553170-A (GB)
Title: Improvements in or relating to the manufacture of metal welding rods
IPC: B23K35/365
Filed: 1941-11-03
Abstract: 553,170. Fluxes; uniting by fusion. ARC MANUFACTURING CO., Ltd., HAIM, G., and McALLISTER, D. Nov. 3, 1941, No. 14163. [Class 82 (ii)] [Also in Group XXII] A plastic composition for coating metal welding rods, particularly those of non-ferrous metals such as aluminium, comprises materials acting as fluxes in the welding operation and a binder of gelatinous alumina which has the consistency of thick cream and has a pH value of 6-9. The electrodes are coated by dipping or extrusion, and in the latter case, the coating on the electrode is dried by heating to 120-200‹C. In an example a plastic composition comprises 3 parts by weight of a flux containing 30 per cent. weight of sodium chloride, 30 of potassium chloride. 15 of lithium fluoride and 25 of cryolite, and 1 part of gelatinous alumina. Specifications 314,400, [Class 82 (ii)], 481,969 and 519.619, [both in Group III], are referred to.
Patent GB-1304312-A (GB)
IPC: H01H13/702
Filed: 1971-05-11
Abstract: 1304312 Retractive switches INTERNATIONAL BUSINESS MACHINES CORP 11 May 1971 [30 June 1970] Addition to 1298290 Heading H1N A switch comprises pairs of contacts 24, 27, one of which, 24, is carried by a diaphragm 23, and an elastomeric sheet 20 carrying projections 21, one for each pair of contacts 24, 27, and carrying intersecting ribs 32 defining compartments, each compartment containing only one projection 21. As shown, depression of polyurethane key 11, which may be marked with an indicia, depresses through elastomer dust cover 14 a soft elastomer button 16, which depresses sheet 20 and causes projections 21 to depress contacts 24 to contact contact 27 which is supported on a rigid sheet 30 on base 29. A rigid metal frame 15 supports sheet 14. Shorter protrusions 22 surround projections 21 to spread out the pressure once the switch has been actuated.
Patent GB-528724-A (GB)
Title: Improvements relating to machines for grinding or polishing lenses
IPC: B24B45/00
Filed: 1939-05-13
Abstract: 528,724. Magnetic chucks. TAYLOR, D. May 13, 1939, No. 14363. [Class 60] Laps c in vertical spindle machines for grinding or polishing lenses are held to the spindle by magnetic chucks. An annular magnet f, Fig. 1, having its poles on opposite faces is secured by undercut edges and white metal i to an iron disc g with a boss j having a top surface level with the top of the magnet, the two surfaces supporting the lap that is centred by a flange k. According to the Provisional Specification the top face of the magnet may be notched to engage projections on the lap to effect a positive driving connection. In a modification the magnet has the shape shown in Fig. 4 the two projections being the poles. It is held on the spindle by a nut m, Fig. 2, separated from the poles by a bush p of non- magnetic material. Both the spindle and the lap are grooved to engage a key t. In a further modification the magnet holds an iron clamp secured to a non-magnetic bush surrounding a central projection on the lap and split for clamping thereto by the clamp ring. A pin projecting laterally from the spindle engages a slot in the bush.
Patent GB-822817-A (GB)
Title: Improvements in tubulous vapour generating and vapour heating units
IPC: F22B37/10
Filed: 1956-05-09
Abstract: 822,817. Water-tube steam boilers; superheaters. BABCOCK & WILCOX Ltd. May 9, 1956 [May 10, 1955], No. 14393/56. Classes 123(2) and 123(3) [Also in Group XII] A natural circulation, top-supported steam generating unit comprises a steam and water drum 10, Fig. 1, from which water flows through downcomers 12 to a drum 14 leading upwardly from which are rows of steam generating tubes forming in part the walls of a radiant chamber 16. The unit also comprises. wall tubes 22, header 24, riser wall tubes 26 and a header 28 connected to the drum 10. Tubes 30 lead from the drum 14 along a floor 32 and wall components 36...38 which separate cyclone furnace chambers 42, 40, from the secondary furnace chamber 34 and form furnaces throats 44, 46, and finally extend as risers 54 to the drum 10. Tubes 60 extend from the drum 14, first in widely spaced relation through screens 62, 64 and then as the basis of a refractory covered wall 66 and roof 68 before connecting to the drum 10 through riser tubes. Similar arrangements of steam generating furnace wall tubes are included in the furnace side walls. Upwardly of the header 24 all chamber walls, with the exception of inclined wall 52, are lined with tangent superheater tubes 70, 76, 78, 80, Figs. 1, 2, the superheater tubes being supported by the steam generating tubes in such manner as to allow of independent movement therebetween (see Group XII). The upper part of chamber 16 is sub-divided by spaced reheater (82, 84, 86, 88, Fig. 2) and secondary superheater (83, 85, 87, 89) tube platens parallel to the side walls 72, 74. Each reheater platen consists of pendant U-tubes having a downflow leg 90A, Fig. 3, leading from a suspended header 90B and an upflow leg 90C connected to a suspended header 90D. The superheater platens are similar. The steam generating tubes 92, Fig. 3, of the side wall 72 are connected to a suspended header 94 whilst the superheater tubes 70 are U-tubes having inlet and outlet legs 70A, 70C, leading to respective suspended headers 70B, 70D. The roof of chamber 16 includes secondary superheater tubes 100 connecting to a header 102 through tubes 80. The cyclone furnace walls include tubes connected to headers such as 106 and risers 108 which form platens 110...114, Fig. 2, and terminate at the drum 10. The convection section of the unit is divided by a wall 114A, Fig. 2, into a reheater gas pass 110 and a superheater gas pass 112 the latter comprising secondary and primary superheaters 116,118. The passes 110, 112, lead to economizer sections 122, 124. Specifications 526,825 and 598,142 [Group XII] are referred to.
Patent GB-1007763-A (GB)
Title: Improvements in cartons and like containers
Inventor: HAYWARD DENIS EDWARD PETER
IPC: B65D5/498
Filed: 1962-04-13
Abstract: 1,007,763. Cartons. AMERICAN CAN CO. April 13, 1962, No. 14479/62. Heading B8P. To prevent the side walls of a carton from bulging outwardly under the weight of the contents a strip 30a is secured by glued tabs 25, 26 to opposite walls substantially centrally of the carton, without dividing the container. The strip may be of paper, plastics or woven material and may be reinforced by threads or wires.
Patent GB-204289-A (GB)
Title: Process for the destruction of noxious insects which live and exist upon and within materials such as fabrics, tobacco, feathers, and the like
IPC: A01N59/00
Filed: 1923-06-01
Abstract: 204,289. Ringeling, H. G., and Moens, N. L. W. I. Nov. 10, 1922, [Convention date]. Disinfecting; disinfecting-chambers.-Insects such as moths, worms, and beetles which infect materials such as fabrics wood, fibre, and tobacco are destroyed by placing the infested objects in a sealed chamber, evacuating the greater part of the air therefrom, and admitting dry ammonia gas to act on the objects at ordinary temperatures for a suitable period of time.
Patent GB-163718-A (GB)
Title: Improvements in and relating to handles for tools and the like
IPC: B25G1/00
Filed: 1921-09-05
Abstract: 163,718. Mourrellon, J. Sept. 5, 1921. No Patent granted (Sealing fee not paid). Wire handles.-Handles for tools and the like are formed from a single length of wire bent at 3, one of the substantially parallel members 2 being straight and the other member 2<a> bent inwards as shown towards the straight member. The handle may be fixed to the tool 1 by passing the ends through holes and riveting as at 5, or the ends may be wrapped round the tool or otherwise attached.
Patent GB-846294-A (GB)
Title: Improvements in studs, bolts and like screw threaded members
Inventor: COOP JACK DREYFUS
IPC: F16B25/00
Filed: 1957-05-08
Abstract: 846,294. Self - tapping screws. BRUCE & BROWN Ltd. May 8, 1958 [May 8, 1957]; No. 14602/57. Class 83 (3). In a self-tapping stud, bolt &c., the screw-threaded leading-end 2 is hollow at 3 to accommodate cuttings produced by the cutting edges 4a, formed by one or more transverse slots 4. The thread preferably tapers over the portion 2a. Specifications 668,818 and 780,901 are referred to.
Patent GB-277104-A (GB)
Title: A packing case specially designed for use in the transport of heavy materials
Filed: 1926-06-10
Abstract: 277,104. Stevenson, G. A. June 10, 1926. Corner joints and joints between box bottoms and bodies; covers; straps, strengthening.-Tinplates &c. are packed in cases consisting of a plain wooden frame A secured at the corners by nails or equivalent devices and a cover B and bottom C each of laminated wood secured to the frame by nails or equivalent devices driven through the margins of the cover and bottom into the wooden frame, the case being finally bound with wire D. The corners of the case may be strengthened by metal plates E.
Patent GB-890965-A (GB)
Title: Improvements in or relating to measuring rules
IPC: G01B3/06
Filed: 1959-04-29
Abstract: 890,965. Measuring-rules. STAUB, H. K. April 29, 1959, No. 14688/59. Class 106 (2). A hook rule is provided with a hook 102 pivotable from a position in which a face 106 of the hook is parallel to and offset slightly from the end edge 107 of the rule (as shown) to a position in which the face is adjacent to a ruling edge 104 of the rule.
Patent GB-847590-A (GB)
Title: Improvements in liquid cooled brake, clutch and like frictional mechanism
IPC: F16D65/813
Filed: 1958-11-18
Abstract: 847,590. Brake cooling systems. SANFORD, R. S., CASTLER, R. H., EAMES, J. O., SEDERGEN, E. D., and EATON, W. A., Nov. 18, 1958 [Dec. 30, 1957], No. 14719/59. Divided out of 847,589. Class 103 (1). In a liquid cooling system for brakes, liquid passes into the brakes along a generally axially directed passage 23 therein and then passes through a radially directed passage 21 into annular groove 41 on the left hand side of the brake. A brake drum carrier 24 is secured to the rotor for rotation therewith and has an outer cylindrical surface 26 wherein there is supported by the tips of axially directed integral parallel teeth 29 a brake drum 28. The cooling liquid may then flow axially along the annular grooves 41 to the annular groove 42 producing in such passage an efficient heat removal from the brake drum due to its extended cooling surfaces. From groove 42, the liquid enters annular spaces 27, is picked up by the opening 47 which acts as a scoop, and is discharged generally axially along passage 44. In Fig. 13, an arcuate internal brake shoe of rigid type, is shown in connection with a brake drum in which the brake lining is carried by the drum and the metal friction element on the shoe. The shoe has friction element 89 of high thermal conductivity metal. The element 89 has its outer surface formed with teeth 90 so that cooling liquid may flow generally circumferentially in the valleys between the teeth and the supporting surface 88 on the brake shoe member. Fig. 14 shows a disc brake having an extended cooling surface in tooth form and the back face of the metal friction member and Fig. 16 shows a manner in which such cooling surfaces may be further extended by indenting the tooth surfaces themselves with V-shaped grooves 127.
Patent GB-490565-A (GB)
Title: Improvements in shelf and like racks
IPC: A47B47/02
Filed: 1937-05-28
Abstract: 490,565. Shelves and racks. THOMAS, B., and THOMAS, E. May 28, 1937, No. 14803. [Classes 52 (i) and 52 (iii)] Shelves 18 or rack bars vertically adjustable on supporting members 13 are perforated to accommodate rods 17 serving as partitions and along which the shelves &c. can be adjusted. Specification 402,488 is referred to in the Provisional Specification.