baber/WOPTO huggingface dataset:
Patent GB-1379872-A (GB)
Title: Apparatus for the doping of semiconductor discs
IPC: C30B31/10
Filed: 1973-02-19
Abstract: 1379872 Semi-conductor diffusion apparatus SIEMENS AG 19 Feb 1973 [19 July 1972] 7966/73 Heading H1K A diffusion tube 1 containing a rack 2-4 for supporting semi-conductor discs 5 during a diffusion process has a rectangular cross-section thus allowing a greater number of discs 5 to be treated simultaneously while retaining favourable flow conditions within the tube 1. A particular combination of gaseous flow rates for diborane, oxygen and nitrogen is quoted for use at a diffusion temperature of 910‹ C.
Patent GB-411255-A (GB)
Title: Improvements relating to fabric bodies for vehicles
IPC: B62D29/00
Filed: 1933-03-17
Abstract: 411,255. Aircraft. MARSDEN, L., The Shrubbery, Sir Harry's Road, Edgbaston, Birmingham. March 17, 1933, No. 8111. [Class 4.] Aircraft bodies and wings comprise a fabric covering upon which metal is sprayed, the usual finishing coats of cellulose or other paints or enamels being applied. Preferably a fabric which is smooth-faced is employed.
Patent GB-1188640-A (GB)
Title: Improvements relating to the Tanning of Leather Resulting in improved Resistance to Washing and Shrinkage
IPC: C14C3/22
Filed: 1969-02-14
Abstract: 1,188,640. Composition comprising dialdehyde Starch. AGRIPAT S.A. 14 Feb., 1969 [15 Feb., 1968], No. 8133/69. Heading C3U. [Also in Division C6] An aqueous solution, useful for treating hides, comprises dialdehyde starch and benzene polycarboxylic acid or an alkali metal salt thereof in a weight ratio of from 1 : 5 to 5 : 1. Other additives which may be present are sodium zirconyl sulphate, sodium chloride, sodium bicarbonate, soda ash, sodium formate, ammonium bicarbonate and neats-foot oil.
Patent GB-550253-A (GB)
Title: Improvements in toothed-gear couplings
IPC: F16H55/20
Filed: 1941-06-27
Abstract: 550,253. Toothed gearing; airscrews. DE HAVILLAND AIRCRAFT CO., Ltd., and GILLMORE, K. B. June 27, 1941, No. 8138. [Class 80 (i)] [Also in Group XXXIII] Relates to toothed gearing in which a driving member is rotatable through part of a revolution and co-operates with a number of driven members, e.g. as in variable-pitch airscrews where the individual blades are provided on their roots with bevels driven by co-operation with a driving bevel under control of a pitch change motor. Circumstances may arise where it is required to vary the setting of or finely adjust one or more of the blades. According to the invention the driving member comprises a number of separate toothed segments all or all but one of which are removable and adjustable. A carrier 3 rotatable by the pitch change motor has a reduced portion 4 formed with splines 5. Each individual bevel segment 6A, 6B, 6C, presents outwardly the bevel teeth 7 and has a collar part 8 splined internally to engage the splines 5. The segments may be locked after adjustment by a ring or the like 10, but they may be secured individually by bolts running in slots. The segments may be adjusted by link members, the splines being replaced by arcuate key-and-slot means. One bevel segment may be formed integral with the carrier.
Patent GB-538701-A (GB)
Title: Improvements in and relating to fastening means for flexible members
IPC: A45C13/10
Filed: 1940-05-06
Abstract: 538,701. Wallet and like fastenings. BUXTON, W. R. May 6, 1940, Nos. 8140 and 8141. Convention dates, May 18, 1939, and March 20, 1940. [Class 44 ] In a fastening for overlapping flexible members, such as the closing flap 11 of a wallet 10, in which a tongue 14 is inserted in a slot 15, a member is mounted in the slot to guide the tongue to the slot, the parts 16, 17 of the member projecting from opposite faces of the slotted part 10. The member is retained by two notches 18 formed therein and co-operating with the ends of the slot. Parts 16, 17 are normally held at small inclination to the faces of part 10 by using a curved slot Fig. 5, which provides a tongue 19 bearing against part 17, or by the provision of a covering piece 22, Fig. 9, stitched to part 10 over the part 17, the covering-piece being large enough to form a tongue-receiving pocket. As shown, tongue 14 is inserted downwards behind the guide-part 16.
Patent GB-687360-A (GB)
Title: Improvements in or relating to the distillation of oil-bearing minerals
IPC: C10G1/02
Filed: 1950-03-31
Abstract: 687,360. Distilling shale. STANDARD OIL DEVELOPMENT CO. March 31, 1950, [Dec. 30, 1949], No. 8150/50. Class 55 (i). In a fluidized process for distilling particulate shale at least part of the heat required is supplied by direct countercurrent heat exchange between the shale and an extraneous subdivided solid heat carrier having a higher gas setting rate than the particulate shale. The heat carrier may consist of pebbles of a refractory or ceramic material or of metal balls and is heated by direct countercurrent heat exchange with hot spent shale from the distillation zone and which may have been combusted by the addition of a free-oxygen containing gas. Further heat for the distillation may be generated in the distillation zone by partial combustion of the shale under distillation. As applied to a system employing a combined distillation and combustion zone, fresh shale is fed through the line 1 to a preheater 10 to pass upwardly through the vessel down which heated ceramic pebbles are passing from a heat exchanger 20. Preheated shale passes to a distillation zone 30 through line 25 and air is admitted through line 29 to maintain a distillation temperature of 900-1100‹F. Distillation products are withdrawn through the line 32 and hot spent shale is transferred to the heat exchanger 20 through line 40 and meets downwardly moving ceramic pebbles recirculated from the bottom of the preheater 10, relatively cold spent shale being withdrawn through line 51. Air may be admitted to the heat exchanger 20 and preheater 10 by lines 47 and 5 respectively and the distillation itself may be effected in the zone 10. In a modification the shale passes upwardly through superposed preheating, distillation and spent shale combustion zones, ceramic pebbles being circulated in the opposite direction. Specification 593,180, [Group III], is referred to.
Patent GB-589777-A (GB)
Title: Improvements in or relating to safety razors
IPC: B26B21/50
Filed: 1945-04-04
Abstract: 589,777. Safety razors. MOUCHLY, J. April 4, 1945, No. 8308. [Class 30] A safety razor is provided with a roller C, of leather, grindstone, or other honing material mounted on the guard B, so that it can be placed in either of two positions, in one of which, as shown, it serves as a guard, and in the other is in contact with the edge of the blade and may be rotated for bladesharpening purposes. The roller may be mounted in either of two sets of bearings on brackets 11 on the-guard B, and may be turned by a milled disc secured to one end of the roller, or by rolling it on a flat surface. The cover A of the razor is provided with a central screwed stud 6 engaged by the handle D, and with a pair of blade-locating studs 7, which with the stud 6 are in a line at right-angles to the cutting edge of the blade. The handle is provided with a transverse opening 16, by which, when the razor is not in use, the handle may be passed over the pin 6 to lie along the guard B.
Patent GB-1338478-A (GB)
Title: Contact screens
IPC: G03F5/16
Filed: 1971-03-31
Abstract: 1338478 Half-tone screens HOWSONALGRAPHY Ltd 23 March 1972 [31 March 1971] 8340/71 Heading G2M A contact screen includes a first zone of maximum density and a second zone of minimum density, a pattern of crossed lines which constitute one of the zones and form the boundaries of areas having other densities (including the other zone), each of said areas including dots arranged around its centre, the vignetted density of each dot differing from that of each of the other dots in the same said area, the remaining part of each area having a vignetted density which varies from a value nearer to that of said zone constituted by the pattern of crossed lines at the centre of the area to a value or values nearer that of the other zone at location nearest the lines forming the boundaries of the area. As shown Fig. 1 a negative screen comprises transparent lines A defining areas comprising (a) dots B, B1, B2 and B3 of different densities and (b) a crossshaped area A1 which increases in density from its centre; the screen produces in accordance with the degree of exposure the dot shapes shown in Fig. 2. A positive screen which is the reverse of the negative screen of Fig. 1 is also disclosed Fig. 5, (not shown). The invention also relates to patterns for the photographic production of preferred positive and negative screens.
Patent GB-718138-A (GB)
Title: Improvements in or relating to bladed rotors for axial-flow fluid-flow machines
Inventor: ISLIP LEONARD
IPC: F01D5/30
Filed: 1952-04-02
Abstract: 718,138. Turbines and compressors. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. March 31, 1953 [April 2, 1952; Oct. 23, 1952], Nos. 8467/52 and 26650/52. Class 110(3) A rotor for axial-flow turbines or compressors comprises a sheet metal disc having a peripheral axially-extending flange and a row of tubular blades mounted on the flange, each blade being formed at its root end with a flange transverse to the blade axis which sits on and is secured to the outer surface of the flange on the disc. The rotor in Fig. 1 comprises a plurality of rotor elements each comprising a pair of discs 1, 2 secured together and having peripheral flanges la, 2a which are formed with inwardly-projecting radial flanges 1b, 2b so that the rim is of channel section. The rotor blades 3 are formed of tubing of the appropriate aerofoil cross-section and the leading and trailing edges are split and the parts splayed out to form circumferentially-extending flanges 3a which are mounted on the peripheral flanges of the rotor discs. Channel section reinforcement members 4 are disposed between blades over the abutting flanges 3a and the parts are secured together by rivets 5, 6 or by metal fusion. The rotor elements are spaced apart by channel-section spacers 7 and are held together by tie-bolts 10. The stator comprises frusto-conical liners 11 in which the fixed blades are mounted by means of tabs 12a, and an outer casing 14 which has circumferential corrugations 14a around the blades 12. The fixed blades 12 are secured to a shroud ring 13 at their inner ends, the flange 13a of the shroud forming a seal with the spacer 7. In Fig. 4. the rotor discs 1, 2 and the reinforcement members 4b have no radially-inwardlyprojecting flanges, and the spacers 7 are located adjacent the flanges 1a, 2a of the rotor discs. The stator blades 12 in this embodiment are secured to the liner 11 and to the shroud ring 13 by means of circumferentially-extending flanges 12c, 12d similarly to the rotor blades. Tie-bolts are not used in this embodiment. The rotor blades 3 may be secured together at their tips by means of a circumferentially-projecting tab extending from each blade and secured by welding to the next.
Patent GB-1024240-A (GB)
Title: Flowmeter for oil
IPC: G01F1/00
Filed: 1965-02-26
Abstract: 1,024,240. Delivering measured quantities of liquid. DEPUTY MINISTER OF THE RUMANIAN MINISTRY OF PETROLEUM & CHEMICAL INDUSTRIES. Feb. 26, 1965 [Feb. 27, 1964], No. 8469/65. Heading B8N. A flowmeter for dispensing measured quantities of liquid such as oil or water leaving a separator comprises a float 11 slidable, in a measuring chamber 1, on a pipe 5 in which is mounted an actuating member 7 connected at one end to a valve-operating lever 21 and, at the other end, to projections 8 such that the float abuts the lever or projections in its upper and lower positions, respectively, in order to control the flow of liquid to and from the measuring chamber. The valve operating lever 21 is connected, via a spring-pawl 20 and rod 19, to a slide valve 18 which is adapted to control the flow of a pressurized gas to a diaphragmactuated valve 12. In operation, with the measuring chamber empty, liquid flows through an inlet 14 in the valve 12 and a pipe 13 into the measuring chamber. On reaching its upper position, the float abuts the lever 21 so as to move the valve 18 and thereby admit gas, via a pipe 17, to act on the diaphragm valve to thereby close the inlet 14 and open the outlet 15 from the valve 12. When the float reaches its lower position, it abuts the projections 8 to reverse the above procedure.
Patent GB-609653-A (GB)
Title: Powder dispensers
IPC: B65G53/12
Filed: 1946-03-19
Abstract: 609,653. Pulverulent material inducers. GAUNT, J. G. (Linde Air Products Co.). March 19, 1946, No. 8558. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 11, 1946.] [Class 71] A powder dispenser for introducing powder into a gas stream comprises a chamber C<1> containing the powder, closed at the top by a cover-plate and at the bottom by a coverplate D<1>. Aspirating means comprises a dome 107 screwed into the plate D<1> and has a centrally disposed vertical ejector tube 127 screwed into the top thereof. Power inlet orifices 109 are disposed in the wall of the dome 107. The ejector tube 127 depends into a discharge tube 95 screwed up into the plate D<1> and provided with a lock-nut 104 and a pointer 103. Rotation of the tube 95 varies the quantity of powder discharged. Gas pressure is supplied to the chamber C<1> above the powder and to the ejector tube from a pipe 113 through a passage 115 in the plate D<1> and pipes 119, 121.
Patent GB-123465-A (GB)
Title: Improvements in Internal Combustion Engines.
Inventor: CROFTON WILFRED BRERETON
IPC: F02B1/00
Filed: 1918-05-23
Abstract: 123,465. Crofton, W. B. May 23, 1918. Four-stroke-cycle engines; cylinders, attachments to, for supplying g a s ; pumps. - In order to obtain increased power in aircraft or other engines, or to enable low-grade fuel to be used, the explosion in each cylinder acts on the free piston of a compressor, which supplies fuel gas to the next firing cylinder at the beginning of the compression stroke in the latter. In the form shown, a pump cylinder 5 is screwed into the cylinder head and draws gas from the induction pipe or other source through a conduit 8 and expels it through a conduit 11 leading to the next firing cylinder, the conduits 8, 11 being provided with non-return valves. The pump piston 6 is of two diameters, the head 7 being actuated by the engine explosion acting against a spring 14, and the space 17 beneath the enlarged part has a cock 18 for admitting sufficient air to cushion the piston. The cocks 18 on the several pumps may be simultaneously actuated. The supply of gas to the pumps may be controlled by a throttle valve on the conduit 8; in the case of an aircraft engine, this throttle valve is gradually opened at increasing altitudes.
Patent GB-578690-A (GB)
Title: Improvements in or relating to electric pulse-generating circuits known as multivibrators
IPC: H03K3/06
Filed: 1941-07-08
Abstract: 578,690. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd., JACOBSEN, B. B., and LEVY, M. M. July 8, 1941, No. 8616. [Class 40 (v)] In a multi-vibrator circuit for generating repeated rectangular impulses; either the width of the pulse, or the repetition period, or both, is stabilized by delay networks. As shown in Fig. 9, delay networks L1, L2, L3 are connected across portions of resistances r1, r2, r3 in the grid circuits or in the anode supply circuit of the valves V1, V2 which are reciprocally coupled in the usual manner. The width of the impulses would normally be defined by the condenser C1 and resistance R1 associated with the grid of the valve VI, but the delay network L1 with its short-circuited end reflects a reversed pulse into the grid circuit and so determines the pulse width. The delay network L2 with an open-circuited end acts similarly in the grid circuit of the valve V2 to determine the repetition period. Alternatively, the delay network L3 may be arranged in a common portion of the valve plate circuits. The resistances R1, R2 may be arranged in the cathode leads with their associated condensers connected across them (Fig. 5, not shown). The delay networks may be arranged so that a pulse is transmitted through them from one part of the valve circuit to another instead of being reflected. In Fig. 10, the multi-vibrator comprises three valves V1, V2, V3, of which the valve V2 connected as a cathode follower passes the impulses from the plate of the valve V1 to the grid of the valve V3. The timing elements C2, R2 are associated with the grid of the valve V3, and the timing elements C1, R1 are associated with the cathode circuit of the valve V1, the condenser C1 being connected between a tapping on the cathode resistance RC3 of the valve V3 and the cathode of the valve VI. A delay network L is fed across a resistance r2 in the cathode lead of the valve V3, and its output terminal 3 is connected to the cathode resistance R1 of the valve V1, the delay in the network determining the repetition period. The pulse width may be determined by connecting R1 as shown in dotted lines to a tapping 4 on the network, and by connecting the output terminal 3 to earth. The repetition period is then determined by the delay in the portion L2 of the network, and the 'pulse width by the delay in the double traverse of the portion L1.
Patent GB-181827-A (GB)
Title: Improvements in directional wireless apparatus
IPC: G01S3/06
Filed: 1921-03-19
Abstract: 181,827. Chandler, C. K. March 19, 1921. Directive signalling; thermionic amplifiers and detectors.-In a system in which the effects of continuous wave signals in rotatable main and auxiliary coils or loops arranged at a fixed angle are adapted to be negatively or positively superimposed upon one another by a reversing switch, error due to the effect of local metalwork and to mutual induction between the loops and the heterodyne circuit is neutralized by correcting means, the effect of which is controlled by the reversing switch. The invention is described as applied to receiving systems comprising a main coil 7, Fig. 1, and an auxiliary coil 8, fixed at right-angles to one another and together rotatable, the series connection of the auxiliary coil 8 relatively to the main coil 7 being reversible by a switch 9. The resultant current is led to a receiver comprising a high frequency amplifying valve 12, a rectifying valve 13 retroactively coupled to produce heterodyne beats in the circuit 19, and a low frequency amplifying valve 14. The auxiliary coil 8 is coupled to the heterodyne circuit 19 by a transformer 20, the primary of which is connected in series with the coil 8 whilst the secondary forms part of the circuit 19. When the coil 7 has been approximately brought on the bearing point by the usual intensity comparison method, a change in pitch of note occurs on operating the reversing switch 9, due to variations in the frequency of the oscillations generated by the valve 13, brought about bv the effect of local metalwork on the loops and by the mutual inductance between the loops and the circuit 19. This change in note is compensated by adjustments of the coupling 20, and the loops are then further set to get equal strengths for the same note. In a modification, the loop 8 and circuit 19 are coupled through an intermediate circuit inductively coupled to the circuit of the loop 8 and inductively or directly coupled to the circuit 19. In another arrangement, Fig. 4, the compensating coupling 20 is omitted, but a similar result is achieved by an additional variable inductance 14, which is either inserted in series with the loop 8 or shortcircuited. according to the position of an extra arm 16 of the reversing switch 9. A still further arrangement is described in which variable compensating capacity is shunted across the tuning condenser 18 when the reversing switch 9 is in one position. A correcting coil as described in Specifications 141,587 and 166,958 may be used for compensating error due to local metalwork in combination with the coupling 20 for neutralizing the effect of mutual induction between the heterodyne circuit 19 and the loops 7, 8.
Patent GB-182165-A (GB)
Title: Improvements in handle bars for cycles
IPC: B62K21/12
Filed: 1921-03-21
Abstract: 182,165. Lamplugh, H. A. March 21, 1921. Handle-bars.-The handle-bar for a cycle or motor-cycle is secured to the stem, without brazing, welding, or other like operation, by means of a metal lug which is pressed to shape and bent into engagement with both the bar and the stem, provision being made to ensure a permanent mechanical connection. The lug, before bending, is shown in Fig. 5, and has a central portion 3 and flanged ends 4, 7, the end 4 having a hole 5 to pass on to the stem, and the end 7 having a hole 8 with a flange 9. When the lug is bent to engage the bar and the stem 2, as shown in Figs. 1 and 8, the flange 9 passes through a hole at the top of the stem and is expanded to engage under the flange 13 surrounding the hole in the stem. A locking-member 14 is interposed between the bar and the stem, and has projections 17 engaging in holes in the bar and the stem. The stem is formed with a shoulder 11 on which the lug rests. Numerous modifications are described which include : the provision of portions on the lug to form bearings for a brake &c. ; the provision of a neck on the lug to space the bar away from the stem; interengaging projections and recesses on the meeting portions of the edges of the lug; slots in the stem adapted to be engaged by portions of the lug, the upper end of the stem being expanded outwardly over the lug to secure the lug in position instead of by means of the flange 'd, and a closing-fitting for closing the upper end of the stem; a key-member fitting over the stem and having a tongue engaging a recess or slot in the handle-bar, and, if desired, an internal projection to engage a recess in the stem, a groove in the stem in this construction replacing the shoulder 11. The upper surface of the stem may be roughened, serrated, or broached to fit a corresponding formation of the lug, and the handle-bar and the central portion of the lug may be similarly serrated etc.; the handle-bar or the stem may be cut away or indented so that one part enters or engages such cut-away or indented part; the upper part of the stem may have longitudinal slots, the lug having portions forced in the slots; the lug may be retained in position by a tubular rivet, thimble eyelet, &c. passed through the hole 8 and expanded beneath the flange 13. The locking-member may be dispensed with and parts of the lug inwardly bent to engage recesses in the bar; a key-piece may fit over the stem and be engaged with the bar by a screwed shank passing into the bar and having a nut inside the bar; the top of the stem may be contracted to form a conical shoulder, the lug being correspondingly shaped and held in position by expanding the top of the stem. In constructions. wherein a screw or member passes down the stem, the top of this may be left open.