baber/WOPTO huggingface dataset:
Patent GB-177512-A (GB)
Title: Improvements in or relating to switching mechanism for use in telephone or like systems
IPC: H01H67/16
Filed: 1922-03-17
Abstract: 177,512. Automatic Telephone Manufacturing Co., Ltd., (Assignees of Erickson, J.). March 28, 1921, [Convention date]. Selectors.-In an automatic switch of the Strowger type, a bracket member (shown separately in Fig. 3) formed of cold rolled steel, carries the off-normal springs 135, the interrupter springs 120 of the rotary magnet and such other parts as the lug 140 carrying the rotary-pawl guide 119, the stationary detent 125 and the stop 138 for the vertical pawl, and is arranged to act as a reinforcement to the main casting of the switch. The vertical ratchet teeth 110, Fig. 2, are provided at one side with a second set of teeth 111 offset from the first. These additional teeth are engaged by the vertical detent 108 during the vertical movement of the switch, whilst at the first rotary step they are moved clear of the detent, thus avoiding the necessity for the slight lifting of the switch shaft which usually accompanies this step.
Patent GB-182864-A (GB)
Title: Improvements relating to boiler flue baffles
IPC: F23M9/00
Filed: 1921-03-12
Abstract: 182,864. Musgrave, B. March 12, 1921. Baffles.-A helical baffle of the t y p e described in Specification 8429/11 is built up of discs or the like which constitute the boss of the baffle and blades or strips fitted into diametrically opposite recesses in the periphery of the discs. As shown in Figs. 4 and 5, the blades 3 are fitted in recesses 2<c> in the disc 2, the disc 2 being arranged with four recesses 2<c> in helical formation. The blades are cemented into position, and each disc is cemented to the adjacent discs where the projectors and recesses 2<a>, 2<b> engage one another. In another construction, the discs have only one pair of recesses for receiving blades. A bolt may pass through central holes in the discs to support the baffles, or blades may be removed at intervals to accommodate a support resting on the bottom of the flue. Fig. 1 shows two arrangements of baffles constructed as described. The fitting of the blades and the discs may, be dovetailed.
Patent GB-272994-A (GB)
Title: An improved identification number plate for motor cars, and other vehicles
IPC: B60R13/10
Filed: 1926-03-23
Abstract: 272,994. Bowley, A. March 23, 1926. Number-plates. - A vehicle identification-plate comprises a base a made from a sheet or sheets of rubber recessed or perforated at the front to the form of letters &c., the recesses or perforations b being filled in with white or coloured rubber c flush with the front face of the base and vulcanized thereto. The plate may be stiffened by a backing d of metal, wood, &c., or by embedding in the black rubber base a a plain or perforated sheet, or an open frame, or two or more strips, of metal, vulcanized fibre, &c. The plate and strips &c. may be provided with bolt holes, and the plate may be surrounded by a white rubber bead k vulcanized in position.
Patent GB-1494361-A (GB)
Title: Concealed sliding clasp fastener
IPC: A44B19/12
Filed: 1975-02-26
Abstract: 1494361 Concealed sliding clasp fasteners YOSHIDA KOGYO KK 26 Feb 1975 [7 March 1974] 7971/75 Heading E2S A concealed sliding clasp fastener comprises a pair of opposed stringer tapes 11, 11' each having a longitudinal element-carrying edge 22 inwardly folded on itself; rows of fastener elements 12, 12' secured to respective elementcarrying edges, each of the fastener elements having an upper leg portion 13, a lower leg portion 14 and a coupling head 15, 15' merging into these leg portions, the lower leg portion being provided with a recess. 17 for accommodating sewing threads, a filler cord 19 inserted longitudinally in a space defined between said upper and lower leg portions of the fastener elements, and a first 24 and a second 25 sewing thread for securing the row of fastener elements to the said element carrying edge 22. The fastener, according to the invention, also includes the features that the first sewing thread 24 passes substantially vertically towards the recess 17 through the filler cord 19 and securing the latter together with the elements to said element carrying edge, said second sewing thread extending from said recess 17 obliquely at an angle to the vertical axis of the stringer and located immediately adjacent the fold of the respective stringer tape and urging the filler cord away from the coupling region of the fastener elements. The fastener elements are in the form of a continuous helically coiled structure, the tapes being of a warp knitted structure to provide a series of alternate wales 20 and grooves 21. The first and second sewing threads 24, 25 are interlooped by a thread 26. The fastener elements may be of meandering, or other suitable form.
Patent GB-127859-A (GB)
Title: Improvements in Floating Mines and Submarine Defences.
Inventor: LANCHESTER FREDERICK WILLIAM
IPC: F42B22/12
Filed: 1917-06-04
Abstract: 127,859. Lanchester, F. W. June 4, 1917. Mines, marine. - Consists in using the wave motion of the sea in combination with a hydrostat to cause mines to become submerged at a given depth and to cause mine booms and nets to assume and maintain an extended formation. In the form shown in Figs. 1 and 4, the mine B<1> is provided with a fixed horizontal vane B<2> to check its own motion, and is suspended by a line C' from a float A, which is provided with hinged flaps E normally free to open upwards but locked at a given depth by bell-cranks D<2> controlled by a hydrostat D'. The net effect of the wave motion is therefore to thrust the float down and keep it submerged and invisible. In a modification, the flaps are replaced by a pair of propellers on concentric vertical axes, one righthanded and the other left-handed. In the boom shown in Fig. 9, the flaps E of the float A are mounted on radial axes and confined by stops so as always to have some lateral inclination, in order that the wave motion may always produce on the flaps an horizontal component which keeps the boom extended. Intermediate mines B<3> are provided in addition to the mines B<1>; and the lines of the boom are made up of hollow tubes to give them approximately the same density as water. The floats A may also carry explosive charges, either powerful enough to destroy a surface craft, or sufficiently weak to destroy the float only, in order to allow the mines to sink without destroying surface craft. The bodies B<1> may be merely weights without explosive charges. Hydrostatisally-controlled flaps may be provided on the bodies B<3> instead of, or as well as on, the floats A
Patent GB-589743-A (GB)
Title: Improvements relating to the grinding of twist drills
IPC: B24B3/24
Filed: 1945-03-29
Abstract: 589,743. Grinding twist drills. STIRLING, E. M. March 29, 1945, No. 8019. [Class 60] In a machine for grinding twist drills in which the drill, as it is given a rotary feed relative to the grinder, is displaced axially by cam means, the cam means comprise a pair of relatively rotatable elements having coacting cam faces, each element having a pair of diametrically disposed similar cam faces separated by quickreturn faces, whereby, by a complete rotation of one element relatively to the other, both edges of the drill will be treated. A main frame 1, with an extension 2 to support a grinding attachment, is formed with a longitudinal slot 9 in which an auxiliary frame 10 is slidably adjustable by a feed screw 6. Threaded in an arm 10a of the frame 10 is a sleeve 14, lockable relative to the frame by a wing nut 16, housing a spindle 13 having at one end'a a chuck 12 and at its other end a hand wheel 15. A collar 19, fixed on the sleeve 14, has a pair of cam faces 21 coating with similar opposed cam faces 22 on a collar 20 on the spindle 13, each pair of cam faces being separated by a quick-return face, so that, during one revolution of the spindle, it and the chuck are twice fed forward axially against the action of a spring 18 so as to grind both cutting edges. A stud 24 engages a drill fluting to ascertain the correct setting position.
Patent GB-819225-A (GB)
Title: Improvement in particular catheter to be introduced into body cavities and process and apparatus for its manufacture
IPC: A61M29/00
Filed: 1957-03-12
Abstract: A catheter or similar instrument is made by injection moulding silicone rubber around a wire mandrel, having a cone-shaped end part to form a funnel-shaped inlet for the catheter.  The rubber is hardened, without pressure, in two stages, the first between 108 DEG and 200 DEG C., and the second between 200 DEG  and 250 DEG C.  Each heating stage lasts for about five hours, the actual length determining the hardness and elasticity of the finished product.ALSO:A catheter or similar instrument is made by injection moulding silicone rubber around a wire mandrel, having a cone-shaped end part to form a funnel-shaped inlet.  The rubber is then hardened, without pressure, in two stages, the first between 180 DEG  and 200 DEG  C. and the second between 200 DEG  and 250 DEG  C.  Each heating stage lasts for about 5 hours, the actual length determining the hardness and elasticity of the finished product.
Patent GB-916028-A (GB)
Title: Improvements in continuous process for the preparation of glycidyl polyethers
IPC: C07D301/28
Filed: 1961-03-06
Abstract: Low molecular weight glycidyl polyethers of polyhydric phenols are made by a continuous process comprising continuously introducing a polyhydric phenol into a reaction zone with an excess of epihalohydrin of at least 2.5 mols per hydroxyl equivalent of the polyhydric phenol, the excess being sufficient to function as a reaction medium, and at a temperature above 100 DEG C., bringing the epihalohydrin and the phenol into intimate contact with each other and with a condensation catalyst to preform a polyhalohydrin ether of the polyhydric phenol along with side reaction products, including glycerol dihalohydrin, in solution in the epihalohydrin, the condensation catalyst being a quaternary ammonium compound, or tertiary amine, a salt of a tertiary amine or an alkali metal salt, continuously withdrawing the epihalohydrin solution containing the preformed polyhalohydrin ether and glycerol dihalohydrin to a dehydrohalogenation zone, and with the epihalohydrin still present as a reaction medium and without first separating out the glycerol dihalohydrin subjecting both the polyhalohydrin ether and the glycerol dihalohydrin to dehydrohalogenation to form a glycidyl polyether of the polyhydric phenol and epihalohydrin, respectively. Lists of suitable reactants and catalysts are specified, epichlorohydrin, bisphenol and benzyltrimethylammonium chloride being used in an example.  The condensation takes place at 100 DEG  to 180 DEG C. for 30 minutes to 3 hours under 50 to 100 pounds gage pressure.  To effect dehydrohalogenation, the preformed polyhalohydrin ether in the epihalohydrin solution, along with its by-products, is mixed with caustic alkali or other well known dehydrohalogenating agent at 50 DEG  to 125 DEG C. for periods varying from 2 minutes to 2 hours.  When the amount of water present is kept to a minimum, lower molecular weight products result, and preferably anhydrous dehydrohalogenating agents are employed. Preferably the hydroxide is dispersed in a hydrocarbon solvent, but it may also be employed in the dry state, for example, flake sodium hydroxide. A suitable apparatus for carrying out the continuous process is described with the aid of a flow diagram.  Reference has been directed by the Comptroller to Specification 843,575.
Patent GB-990047-A (GB)
Title: Ion air density sensor for atmospheric pressure and altitude measurements
IPC: G01L21/00
Filed: 1961-03-07
Abstract: 990,047. Pressure measuring apparatus. BENDIX CORPORATION. March 7, 1961 [March 16, 1960], No. 8215/61. Heading G1N. [Also in Divisions G3 and H1] A pressure measuring device, e.g. altimeter, comprises an ionization gauge 5, Fig. 3, having a chamber 34 for receiving, through the conduit 80, a sample of gas the pressure of which is to be measured, anode and cathode electrodes in the form of three coaxial cylindrical tubes 50, 60 and 56, the inner and outer ones 50 and 56 of which are electrically interconnected to form the anode, radio-active material on the cathode 60 for ionizing the gas sample in the chamber, a thermostatic heating arrangement for maintaining the temperature of the gas sample substantially constant and electrical means connected between the anode and cathode via the conductors 37 and 62 to provide an output signal directly proportional to the density of the sampled gas maintained at said substantially constant temperature and hence directly proportional to the pressure of the gas. The cathode 60 and anode 50, 56 are connected through the conductors 62 and 37 to a D.C. source 70, Fig. 1, in series with a resistance 72 across which an output signal is passed to the indicating device 76 which can be of the type described in Specification 863,562. The heating arrangement comprises an electric heating coil 14, Figs. 1 and 2, surrounding the ionization gauge and controlled by bi-metallic switches 17, 18 in the circuit 24 selecting the parts 15, 16 of the coil 14 for coarse and fine temperature regulation. The gauge 5 and coil 14 are contained within a casing 7 filled with heat insulating material 26 such as fibreglass.
Patent GB-250007-A (GB)
Title: Improvements in or relating to electrical junction boxes and the like
IPC: H02G3/16
Filed: 1925-03-27
Abstract: 250,007. Callender's Cable &. Construction Co., Ltd., and Bryce, S. J. March 27, 1925. Junction boxes are filled with a plastic compound to protect the unsheathed ends of electric cables. The ends 9 are laid upon a pad 8 of plastic material applied to a base plate 1 of a junction box. A collar 10 is inserted in the box forming an enclosing chamber which is filled with a further quantity of plastic material and a top pad of the material is then applied, the whole being enclosed by a suitable cover. The cables are clamped by a bridge ring 4. If desired the junction box may have the form described in Specification 249,957, wherein the base of the box has an upturned flange or rim which has a number of saw-cuts at right angles to its edges so that a tongue can be turned down into the box wherever it is desired to bring a cable into the box. Specification 205,709 is referred to in the Provisional Specification.
Patent GB-1488745-A (GB)
Title: Aircraft ground proximity warning instrument
IPC: G08B21/00
Filed: 1975-06-19
Abstract: 1488745 Radio navigation SUNDSTRAND DATA CONTROL Inc 19 June 1975 [19 June 1974] 8270/76 Divided out of 1488744 Heading H4D The disclosure is the same as that of Parent Specification the claims however relate to the warning of the A/C pilot of undesired proximity to the ground, a detector circuit producing a warning signal when the A/C is below a safe altitude without being in a landing configuration and the application of the warning signal being inhibited when a barometric rate of descent signal is less than a set value and when one of the landing gear and flaps of the A/C are in a landing configuration. The control of the warning signal allows a low level pre-landing turn with wheels down but flaps up to reduce drag, without actuating the alarm. The radar altimeter output h R  is fed to a junction 60 to give (h R  - 480). A threshold bi-stable 61 give a 1 or TC (below minimum terrain clearance) signal when h R <480 ft., which signal is fed to one input of AND gate 62. An inhibited input ensures that the gate cannot produce a warning signal if the flaps are in a landing configuration (FD= 1). If however the flaps are up (FD = 0) then a memory bi-stable 58 must be in the "cruise" state (#T0=1) to fully enable the gate. Such a state prevails when (a) h R >700 ft., in which case TC = 0, so no warning, or (b) when the A/C is climbing but before it reaches 700 ft. To allow for said low level prelanding turn, an additional circuit 66, 67, 68 is brought into operation when a bi-stable 65 is set to give a "landing wheels down signal" GX to make an otherwise negative (h R  - 480) signal, positive and TC = 0, when the barometric rate of descent h B  achieves a certain value. A junction 66 gives an output (1400 - h B ) which is fed to a limiting circuit which gives a 0 output for h B  = 1400 and saturates for h B  = 600. The limiter output is fed through an amplifier 68 having a gain such that for h B  = 1400 the (h R  - 480) boosting signal at junction 63 is 0 and for h B  = 600 the boosting signal would just countervalance the (h R  - 480) signal for h R  = 200 ft. Thus as the aircraft descends from 480 to 200ft. the value of h B  which can be allowed without a warning being given diminishes from 1400 to 1600ft./min. Below 200ft. there is no inhibit signal and a warning is given.
Patent GB-646740-A (GB)
Title: Improvements in or relating to seals for members having small relative movements
Inventor: ANLEY DONALD MAYNARD
IPC: F16L51/00
Filed: 1948-03-19
Abstract: 646,740. Flexible tubes. ROLLS-ROYCE, Ltd. March 19, 1948, No. 8292. [Class 99(ii)] [Also in Groups X and XXVI] The sealing element for a flame or gas seal comprises a hollow flexible telescopic tube 10 made from strip metal &c. having a flat S-section wound into helical form, the flange at one edge of the section engaging the flange at the other edge with a packing element 10a located between the interengaging edges of the section. The tube 10 may be sheathed in rubber &c. 11. The tube ends are joined by welding or so that they may be disconnected.
Patent GB-970554-A (GB)
Title: Carburetor
Inventor: SZWARGULSKI JESSE LORENCE
IPC: F02M17/52
Filed: 1962-03-05
Abstract: 970,554. Spray carburetters. ACF INDUSTRIES Inc. March 5, 1962, No. 8349/62. Heading FIB. To reduce vaporizing of the fuel, a carburetter comprises a first body portion Sl comprising the fuel bowl 1 and a portion 9 of the Venturi throat and a second body portion S2 comprising the convergent portion 19 of the Venturi and a downwardly projecting block 23 in which is formed the fuel feed passages. The carburetter is completed by a cover and air entry section S3 and a throttle section S4, heat insulating gaskets 50, 57, 65 being provided between the body sections. The block 23, which projects into the feed bowl without contacting the wall thereof to reduce heat transmission to the fuel feed passages, includes a feed jet 131, Fig. 7, controlled by a needle 129 actuated by a suction actuated piston 139, through which jet the fuel flows to a well 115 feeding the main fuel nozzle 111, and also an accelerating pump cylinder 199, Fig. 11, feeding the accelerating nozzle 217. An idling jet 161, Fig. 10, also carried by the block 23, feeds through passages 93, 179 to idling orifice 193. The accelerating pump 197 is moved downwards on its suction stroke by linkage 221, 225, connected to the throttle valve spindle and is forced upwards on its delivery stroke by a spring 203. When the throttle valve is opened wide a projection 317 on the rod 221 lifts the fuel metering rod to its maximum fuel position regardless of the action of the suction piston 139. The float valve 75 is controlled by a pair of floats 85. The eccentrically pivoted choke valve 235 is controlled by a bimetallic coil 243 and a suction actuated piston and the choke valve is pulled open for deflooding, when the throttle valve is opened wide, by a linkage 303, 309 connected to the throttle spindle 67. An air filter is held on the air intake S3 by a bolt 54 screwing into radial struts 53. The body section S2 may be of aluminium.
Patent GB-1179922-A (GB)
Title: Sliding Clasp Fasteners and Process and Equipment for their Manufacture.
IPC: B29C48/12
Filed: 1967-02-22
Abstract: 1,179,922. Sliding clasp fasteners. OPTIHOLDING A.G. 22 Feb., 1967 [5 March, 1966 (2)], No. 8413/67. Heading E2S. A sliding clasp fastener comprises a pair of stringer tapes 3 on to each of which is moulded a row of interlocking elements 5 of thermoplastic material formed as continuous strips extruded on to the associated stringer tapes and having interlocking heads, in which each stringer tape is provided with upper and lower rows of the interlocking elements, 4,4 only the heads of which project beyond the edge of the tape, and the gaps between the upper and lower rows are divided by the tape, so that the heads on each tape are supported transversely in the opposing gaps by the faces of the stringer tapes. As shown, fastener elements 5 and a guide strip 11 are extruded on to the edges of open mesh stringer tapes 3 by means of a three part die 11a, 11c, 11b to produce elements along opposite edges of each tape. The die and tapes are passed through an extruder so that the die sections 11a-11c are coated on all sides with thermoplastic material and the material flows into die cavities 12 to form a strip and fastener elements on each tape. In an alternative form, split dies may be used. Specifications 1179921 and 1179923 are referred to.
Patent GB-548812-A (GB)
Title: Improvements in jigs for facilitating drilling, punching and like operations
IPC: B23B47/28
Filed: 1941-07-03
Abstract: 548,812. Jigs for drilling, punching &c. GENERAL AIRCRAFT, Ltd., and WURR, C. E. July 3, 1941, No. 8418. [Classes 83 (iii) and 83 (iv)] Jigs for use in drilling and punching &c. are made from a tough synthetic resin with bushes 3 for the locating points pressed in. The hole for the drill is lined with a split bushing 4 preferably of thin hardened steel. The edges of the bushing have interengaging formations 8 which may be of dovetailed shape. The bush is made a close fit on a sized mandrel and is preferably opened slightly before hardening so that the resulting spring pressure prevents displacement of the bush during use. The body of the jig may be made from wood. In some cases the bushes 3 may be omitted.
Patent GB-374953-A (GB)
Title: Improvements in and relating to iron and steel alloys
IPC: C21D6/00
Filed: 1931-03-19
Abstract: In a process for improving iron and steel either unalloyed or alloyed with manganese, nickel and chromium, but free from silicon, less than 1 per cent of titanium is included in the iron and steel, and the alloy so formed is cooled quickly or slowly from the casting temperature, or in the case of reheating of the alloy, from 700-1300 DEG  C. and then tempered at 250-650 DEG  C.  When the alloy is reheated, the tempering may be replaced by a particularly slow cooling.  Specifications 304,303, [Class 72, Iron &c.], and 352,964, are referred to.
Patent GB-801106-A (GB)
Title: Improvements in or relating to the regeneration of photographic processing baths
Inventor: RUSSELL GERALD
IPC: G03C5/395
Filed: 1956-03-19
Abstract: 801,106. Electrolytic regeneration of ferricyanide photographic bleach baths. ILFORD, Ltd. Jan. 21, 1957 [March 19, 1956; July 10, 1956], Nos. 8565/56 and 21313/56. Class 41. [Also in Group XX] Ferricyanide -bromide baths for bleaching photographic elements (see Group XX) are regenerated by electrolysis, the cathode being immersed in a solution containing bromide ions which is prevented from mixing with the bath liquid. Preferably, the catholyte is an alkali bromide and is separated from the bath liquid by a cation exchange membrane 10 of a cell 4. In another form, Fig. 1 (not shown), the catholyte solution is contained in a glass cell having a sintered glass base plugged with agar gel and the alkali formed is neutralized by the addition of aqueous hydrogen bromide. A porous ceramic partition may alternatively be used. As shown, in a selfneutralizing cathodic arrangement an additional cathode compartment 11 containing a solution of hydrogen bromide and having an anion exchange membrane 12 is provided. Of the carbon electrodes 2, 7 and 13 either 7 or 13 may be omitted.
Patent GB-956177-A (GB)
Title: Method of and means for articulating or rivetting co-acting members
Inventor: ELLIS DANIEL
IPC: D03D39/02
Filed: 1962-03-06
Abstract: 956,177. Rivets. FREDERICK GREENWOOD & SONS Ltd. March 5, 1963 [March 6, 1962], No. 8598/62. Heading F2H. [Also in Division B3] A rivet has a domed countersunk head 3 in which the edge of the dome is larger than the countersunk portion to produce a feather-edge 4. There is a square shoulder 6 under the head.