baber/WOPTO huggingface dataset:
Patent GB-1505802-A (GB)
Title: Thermochemical combustible gas detectors
IPC: G01N27/16
Filed: 1976-02-25
Abstract: 1505802 Detecting combustible gas; bridge circuit MAKEEV N I INST PO BEZOPASNOSTI RABOT V GOR PROMYSHLENN 25 Feb 1976 7468/76 Headings G1N and G1U A combustible gas detecting bridge 1, Fig. 1, including a gas-sensing thermistor 2, a compensating thermistor 3, and resistors 4, 5, has two auxiliary resistors 10, 11 associated with it and is so arranged that in operation- (1) firstly, as the gas concentration being monitored rises, which tends to lower the diagonal voltage Vba, a first threshold circuit 9 causes a potential-divider type bridge supply circuit 8 to raise the bridge supply voltage and thereby maintain the diagonal voltage Vba constant, and (2) secondly, when the gas concentration reaches a predetermined (maximum safe) concentration, any further rise causes either the bridge supply voltage to fall (as in Fig. 1), or the bridge supply voltage to be maintained constant (as in Fig. 2) at the level then attained, this being effected by a second threshold circuit 13 which overrides the action of the first threshold circuit 9. Thus, in both cases, if the gas concentration rises above the predetermined level, the diagonal voltage Vba, rather than remaining constant, actually decreases. The decrease in the diagonal voltage Vba to below the threshold level of threshold circuit 9, causes the circuit to actuate an indicator 14, so that a lamp which was previously steadily lit, now flashes. The arrangement, by limiting or even reducing the temperature of the gas-sensitive thermistor 2, is said to prolong the life thereof. A detailed circuit Fig. 3 (not shown) is described in which each threshold circuit is constituted by a tunnel diode circuit, arranged so that the bridge supply voltage actually oscillates about the value required to maintain the appropriate bridge diagonal voltage constant, and it is the lack of oscillation in the first threshold unit 9 which occurs when the diagonal voltage Vba falls below, and remains below, the threshold level, that actuates the indicator.
Patent GB-485229-A (GB)
Title: Improvements in or relating to boxlike containers or receptacles
IPC: B65D6/08
Filed: 1937-03-15
Abstract: 485,229. Cardboard &c. containers for fruit &c. DANIELS, L. A. March 15, 1937, No. 7512. [Classes 18 and 21] Cardboard, millboard, &c. receptacles of square, cylindrical, conical, &c. shape for fruit and vegetables, hats, &c., have the walls, which are separate from the bottom, constructed from overlapping strips shaped as in Fig. 4, and arranged as in Fig. 2, the bottom being constructed as in Fig. 3. The outer layer of strips 1 (which may be the only layer) has a longitudinal flange 8 which receives the staples 7. The intermediate strips, when these are used, abut edge to edge. The strips may also be arranged helically. Instead of arranging the bottom in the manner shown, the tongues 2, 3 may be omitted and tongues arranged on the bottom disc 4, 5 which embrace the lower edge of the wall. Rings 9, 10 may be secured at the mouth. Ring 10 may be increased in thickness and positioned a short distance within the mouth to carry a closure disc which may have a window of transparent cellulosic material. This ring may also serve to receive a disc or ring secured upon the bottom of a container stacked upon the first container. The upper edges of the container shown and the rings 9, 10, may be disposed vertically. The receptacles may be coated with cellulose &c. to render them waterproof or to ornament them. Specification 485,212 is referred to.
Patent GB-1128666-A (GB)
Title: Control device in a portable electric power tool
IPC: H01H9/06
Filed: 1966-02-22
Abstract: 1,128,666. Portable electric drills. SKIL CORP. 22 Feb., 1966 [12 July, 1965], No. 7627/66. Heading B3C. [Also in Division H1]  In a portable electric drill 10 having a trigger 17 for actuating the speed control switch 16, a device for controlling a motor reversing switch 22, Figs. 1 and 2, comprises a lever 30 pivoted at 28 which engages a button 23 on the switch 22, and supports a pin 32 which is adapted to seat in one of the two legs of a cavity 33 in the trigger 17 according to the direction of motor rotation required. Lever 30 can only be pivoted to alter the direction of rotation, when the trigger 17 is fully extended. In a modification, the reversing switch has a button (59), Fig. 5 (not shown), which co-operates with an inclined slot (60) in lever (30<SP>1</SP>), so as to provide movement of the button in a direction parallel with that of the trigger. In a further modification, lever 30<SP>11</SP>, Fig. 6, moves in a direction parallel to that of the trigger, and the movement of button 59<SP>11</SP> into two positions is controlled by a spring- urged pin 70 which co-operates with two recesses 65, 66 in the lever. Pin 70 is urged into a recess when the trigger 17<SP>11</SP>is in its forward position by a cam (77), (78), Fig. 7 (not shown), on the trigger. It is stated that the reversing mechanism can be used with a trigger which controls an on-off switch and does not provide variable speed control.
Patent GB-600022-A (GB)
Title: Electron discharge devices and associated cavity resonator circuits
IPC: H01J21/06
Filed: 1945-03-26
Abstract: 600,022. High-frequency discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 26, 1945, No. 7641. Convention date, March 27, 1944. [Class 39 (i)] In an electron discharge device such as an inductive output tube (as shown) or triode, the control grid 11, Fig. 2, is supported from a metal ring 14 sealed through the envelope by a collar 11<1> and an. intermediate conductive structure, and the cathode 10 is provided with radial connections 46 extending through the intermediate conductive structure to a second metal ring 15 also sealed through the envelope, the cathode 10 is insulatingly supported within the grid structure by a collar 44<1> and rod and insulating bead arrangements 43, and a cavity resonator preferably of the coaxial line type, Fig. 1 (not shown) is coupled between the cathode and grid rings 14, 15. The intermediate conductive structure comprises a flared collar 41 and a plurality of leads 40, and the cathode connections 46 pass radially between the leads 40. The input resonator which is tuned by an annular plunger is capacitatively coupled to the grid ring 14 and directly connected to the cathode ring 15 by spring fingers. A drumshaped output resonator is coupled between the grid ring 15 and accelerating electrode ring 17, and is .capacitatively coupled to the ring 15 and connected directly to the ring 17 through further spring fingers. The leads to the collector 13 are provided with heat shields. Specification 611,912 is referred to.
Patent GB-807926-A (GB)
Title: Improvements relating to devices for gripping the internal cylindrical wall of hollow cylindrical articles
Inventor: GUSCOTT WILLIAM GEORGE
IPC: B65H49/30
Filed: 1956-03-12
Abstract: 807,926. Cable drums. KENT BROS. ELECTRIC WIRE CO. and E. H. PHILLIPS Ltd. June 12, 1957 [March 12, 1956], No. 7718/56. Class 99(2). [Also in Group XXII] In a cable drum of the kind having a number of jaws 2... which are simultaneously movable radially away from a central position and constitute a core of adjustable diameter, a ring 21 of flexible material, e.g. wire rope, is disposed between the jaws and engages corresponding parts thereon, and there is means for changing the shape of the ring to force the jaws mutually away from one another. As shown, the jaws, of quadrant shape, are formed with radially extending slots 6 through which pass bolts 8 ... 11 secured to the faceplate 1 and are biassed by springs 12 towards the centre of the faceplate. Metal straps 13, 14 bridge the bolts 8, 9 and 10, 11, the bolts 8, 11 and 9, 10 respectively being linked by straps 15, 16 and 18, 19 with studs 17 and 20, secured to the faceplate. Eyelets at the ends of the rope 21 are engaged over one of the studs 17 or 20 and the rope passes around the other stud. An extensible anchor 22 comprises a central annular part 23, engageable by a tommy bar, having diametrically opposed, internally screwthreaded sleeves 24, 25 in which are engaged plugs 26, 27 the outer ends of the plugs being provided with bearings 28, 29 for reception of the rope 21. The latter constitutes a ring of generally star shape having reentrant parts which engage the apices of the jaws. Rotation of the part 23 causes the plugs to move outwardly and the rope to adopt a rectangular formation to force the jaws outwardly against the action of the springs.
Patent GB-1377725-A (GB)
Title: Method of encapsulating enzymes
IPC: A61K9/50
Filed: 1973-02-16
Abstract: 1377725 Encapsulating enzymes in starch PROCTER & GAMBLE CO 16 Feb 1973 [18 Feb 1972] 7758/73 Heading C3H [Also in Division C5] A stabilized, encapsulated enzyme (e.g. amylase) is obtained by (a) fluidizing starch particles of 0À1 micron to 100 micron particle size and moisture content of less than 25% by weight; (b) forming an aqueous slurry of enzyme of solids content of 40-80% by weight; (c) atomizing the aqueous solution to give atomized droplets of 100-2000 micron diameter, (d) contacting the fluidized bed of starch with the atomized droplets thereby causing starch particles to adhere to the droplets to form tacky agglomerates and (e) mixing the agglomerates until further starch particles adhere thereto, thereby forming a dry free-flowing product of particle size of 100-3000 microns.
Patent GB-725978-A (GB)
Title: Improvements in and relating to thermal power installations
IPC: F02C1/10
Filed: 1953-03-20
Abstract: 725,978. Gas turbine plant. AKT.-GES. FUR TECHNISCHE STUDIEN. March 20, 1953 [May 1, 1952], No. 7763/53. Class 110 (3). A gas turbine plant comprising a standard turbine group consisting of a main compressor' the compressed air from which is heated by a gaseous waste-heat carrier such-as exhaust gases from an industrial process and then expanded in a main turbine driving the compressor and supplying useful work has an auxiliary turbine group, mechanically independent of the standard group and consisting of a turbine driving a compressor, connected to the standard group so that the main power turbine discharges into the inlet of the auxiliary turbine which exhausts into the auxiliary compressor which in turn discharges into the intake of the main compressor The expansion ratio of the standard turbine group in an installation without reheating should be below 4 or should not substantially exceed 4. In an installation with reheating, the expansion ratio of the individual expansion stages should not exceed these limits. The purpose of the invention is to increase the useful power obtained from the waste heat carrier. The compressed air is heated in the heater 1 by a heat carrier such as the exhaust gases from an industrial process, and then expanded in the turbines 2, 3. The turbine exhaust is cooled in the heat exchanger 4 by the compressed air entering the heater 1 and then further cooled in a cooler 11 before entering the compressor 5. The compressed air from the compressor 5 is cooled in a cooler 12 and then further compressed in a compressor 6, where it is intermediately cooled in a cooler 13 before passing through the heat exchanger 4 to the heater 1. The turbine 2 drives the compressor 6 and the electric generator 7. The power delivered by the turbine 3 is fully consumed by the compressor 5. By-pass pipes 15, 17 around the turbine 3 and compressor 5 are fitted with control valves 14, 16 to enable these powers to be balanced. If desired, the turbines may be of radial flow and the compressors of axial flow construction.
Patent GB-308458-A (GB)
Title: Improvements in or relating to swings
IPC: A47D13/10
Filed: 1928-03-14
Abstract: 308,458. Evans, S. March 14, 1928. Swings.-Relates to collapsable swings consisting of two trapezoidal frames fixed in relation to each other by crossed stays adjacent their upper ends so as to form a structure with a wide base, the upper ends of the crossed stays being pivoted to the frame members by transverse rods from which are suspended pairs of swing members carrying oppositely disposed folding seats. In this invention the lower ends of the crossed stays detachably engage fixed bolts extending from the respective frame members and the stays are detachably connected at the points where they cross. The trapezoidal frames 1, 2, Fig. 1, are connected by crossed stays 4, 5, the upper ends of which are pivotally joined to the frames by rods 6, 7, from which the swing structure is suspended. The lower ends of the stays are detachably connected to the frame members by bolts. The stays are also detachably connected at their crossing points by bolts 58. The swing structure comprises two pairs of members 8, 9, connected at their lower ends by a removable footboard 10 and each provided with a seat facing the opposite one. Pivoted arms 14 connect the backs 19 of the seats to the swinging members 8, 9, and pivoted seat brackets 22 are also adjustably attached thereto by recesses 23 engaging with pins 24. Stay rods 20 are, also pivoted at one end to the bottom of the backs 10 of the seats, and their other ends slide in slotted members 21 attached to the swinging members 8, 9. The inclination of the seats may thus be adjusted. A removable table 18 may be placed between the swinging members 8, 9, at the level of the seat arms, or if not required it may be disposed near the top of these swinging members. The table has hooks engaging annular recesses in the heads of the bolts which pivot the seat arms 14 to the swinging members 8, 9. Ropes 37 are suspended from the rods 6, 7 to maintain the motion of the swing. A removable canopy 34 may be suspended from the swinging members 8, 9. The frame members 1, 2 and the swinging members 8, 9 are provided with metal bushes where the rods 6, 7 pass through them. By disconnecting the stay rods 4, 5 at their lower ends and by removing the canopy, footboard, table, &c., the structure may be folded up. In a modified construction, Fig. 7, the frame members 39 and swinging members 43 are made from tubing connected by sockets 42, 44. The swinging members 43 are spaced apart by struts 45, 46, 47 upon which the table, seats, and footboard may be supported. The crossed stays 4 of metal tubing may be held in the folded or open positions by bolts 48 attached to the main frames 39. The seat stays 20 are pivoted at their lower ends to brackets which slide upon square, rods 50 attached to the swinging members 43.
Patent GB-288261-A (GB)
Title: Improvements in or relating to offset printing machines
IPC: B41F13/32
Filed: 1928-03-14
Abstract: 288,261. Rotaprint Ges. April 6, 1927, [Convention date]. Rotary offset-machines; tripping-arrangements. -A rotary offset machine, especially a small one for office use, is constructed with on offset roll C mounted in movable bearings f, which are displaceable by a lever e pivoted at d, so as to be capable of occupying three positions as indicated at c, c<2>, c<1> corresponding to the positions of the lever e represented by e, e<2>, e<1>. In position c' the offset roller is tripped, and in position c<2> the offset roller contacts with the plate cylinder A only, and while in this position, a well-inked impression is rolled up on the offset cylinder. As the offset cylinder C moves to its c position, in which it contacts with both the plate cylinder A and impression cylinder B, a cam integral with lever e operates a sliding clutch by means of a lever, and throws into action a cam which normally operates a lever of an automatic sheetfeeding device, and sheets are thus fed by known means at the correct time to co-operate with the printing-rollers. As open to inspection under Sect. 91 (3) (a) the Specification comprises a modification in which the roller c may be mounted in spring-pressed bearings, the movement of which towards the cylinders A, B is limited by stops, but which can yield if a thick mass of paper, or a foreign body, passes between the cylinders. This subjectmatter does not appear in the Specification as accepted.
Patent GB-491972-A (GB)
Title: Improvements in or relating to pivots for surgical scissors, forceps, and the like
IPC: A61B17/32
Filed: 1937-03-17
Abstract: 491,972. Pivot pins. BARTLETT, B. G. W. March 17, 1937, No. 7890. [Class 65(ii)] The pivot-pin 10, Fig. 2, of a pair of surgical scissors has a hemispherical head 11 fixed in the blade 13 part of which protrudes from that blade and rests in a part spherical bearing recess in the blade 15. The pin portion also forms a part of the pivot bearing. In the pivot shown in Fig. 6, the pin 10 is fixed in the blade 15 and the lower portion of the spherical head lies in a spherical recess in the blade 15 whilst the upper portion rests in a spherical bearing surface in the blade 13. In the pivot of Fig. 2, the lower end of the pin 10 is T-shaped, 14, Fig. 1, and when the blades are wide open the T-shaped head can be passed through a slot 16 and the blades separated. Similarly, the spherical head of Fig. 6 is cut down to two opposed quadrants 22, Fig. 5, and corresponding slots are made in the spherical seating. Other shapes of similarly detachable pins are described, the pins and their bearing recesses may be protected by cover plates. Resilient washers may be included in the pivot assembly.
Patent GB-435390-A (GB)
Title: Improvements in or relating to riveting machines
IPC: B21J15/20
Filed: 1934-03-14
Abstract: 435,390. Setting rivets &c. BIFURCATED & TUBULAR RIVET CO., Ltd., 235, Upper Thames Street, London, and PATERSON, L. M., Fox Hill, Aylesbury, Buckinghamshire. March 14, 1934, No. 8051. [Classes 43 and 89 (iii)] A riveting-machine for operating on work of varying thickness comprises a load receiving or transmitting hydraulic anvil or punch of which the hydraulic pressure is relieved, when the riveting is effected, by a valve which is opened mechanically at a position determined by the thickness of the material. In the construction shown in Fig. 2, an anvil a, positioned below a vertically movable setting tool a', is supported by the rod a<2> of a piston operating in a hydraulic cylinder b which is connected by pipe lines b<3>, b<6> to a reservoir b<5> and a valve casing d respectively. The casing d is slidable longitudinally on a bed d<4> under control of a feeler member d<11> engaging with the work and operating therein is a balanced piston valve d<1> which is reciprocated synchronously with the setting tool a<7>, by connections d<13>, d<14> from the crank operated plunger slide a<6>. As the work increases in thickness, the casing d is raised to advance the opening of an exhaust port d<3> by which the pressure in the cylinder b is relieved to allow the anvil to recede, the port d<3> being connected to the reservoir by a pipe line b<7>. A spring a<19> returns the anvil to normal position on withdrawal of the setting tool. In a modification, Fig. 3, the punch a' is carried by a piston a<8>-a<9> which is slidably mounted in a casing a<10> on the plunger slide and a gauge a<11> controlled by the work opens a valve a<13> in the piston to relieve the pressure when the desired setting is attained On the upward stroke of the cylinder a<10> fluid is drawn into the space above the piston through a spring loaded valve a<20>.
Patent GB-878872-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: MORLEY JOHN GODFREY
IPC: G21C3/24
Filed: 1957-03-12
Abstract: 878,872. Fuel materials. ROLLS-ROYCE Ltd. March 11, 1958 [March 12, 1957], No. 8184/57. Drawings to Specification. Class 39(4). In a nuclear reactor fuel element, the fissile material, enriched uranium oxide, is mixed and heated with silicon dioxide, and/or aluminium dioxide with one or more of magnesium, lead, zirconium, sodium or potassium oxides to form a glass. The glass element is surrounded by a glass forming composition and may have a casing of silicon carbide, carbon, molybdenum or beryllium oxide. It has a melting point below the operating temperature of the reactor.
Patent GB-703639-A (GB)
Title: Improved method of forming laps from card slivers on sliver lap machines
IPC: D01H5/00
Filed: 1951-04-09
Abstract: 703,639. Drawing fibres; lap forming apparatus; roller arrangements in textile spinning &c. machines. AKT.-GES. J. J. RIETER & CIE. April 9, 1951 [May 27. 1950], No. 8218/51. Classes 120(1) and 120(2) Slivers are drawn independently of each other by loaded pressure rollers in a drawing frame and. formed into a lap. In the operation of the sliver lap machine shown, each sliver A passes from its can 25 over a guide rod 26, through a trumpet guide 27, and between feed rollers 10, 11; it is condensed by a trumpet 24 and guided to rollers 12, 14, running at such a speed as to slightly tense the sliver, and through drafting rollers 13, 15. Drawn slivers pass on to a feed table 2 attached to the machine frame 1 whence they run through calender rolls 8 to lap rollers which form a lap B. Each pair of divided top rollers 14 and 15 has a centre portion of reduced diameter on which sits a weighting saddle 16 carrying a weight rod 17 adjustably loaded by a spring 18: roller clearers 22 and 23 are carried on the saddle.
Patent GB-1417737-A (GB)
Title: Speed control device with independent speed control and on-off  operating members
IPC: H02P23/00
Filed: 1973-02-20
Abstract: 1417737 Resistance motor controllers SKIL (NEDERLAND) NV 20 Feb 1973 [1 March 1972] 8317/73 Heading HIS [Also in Division H2] A portable electric tool has an on-off switch operated by a member 74 and, for motor speed control, a variable resistor device whose slider 37 is operated by a member 43, the members 74, 43 being slidably engaged with each other to be capable of independent operation. In the embodiment described member 74 has a rib (77, Fig. 12, not shown) which slides in a groove (46, Fig. 14, not shown) in member 43. Member 43 is actuated by a wheel 58, the shaft 56 of which has pinion teeth 55 which mesh with rack teeth (54) on member 43. Wiper contacts of slider 37 engage resistance strips on a ceramic board 28 carrying the circuit depicted in Fig. 18 (not shown). A detent spring 62 engages a portion 60 of wheel 58 to releasably hold it in a selected position. Movement of switch member 74 moves a contact 72 into "off", "on" and "full speed" positions, in the last of which the speed control circuit on board 28 is by-passed. Corresponding to these three positions are three apertures (80, 81, 82, Fig. 3, not shown) in a casing wall 14, which are selectively engaged by a detent (79, Fig. 13, not shown) or member 74.