baber/WOPTO huggingface dataset:
Patent GB-1023970-A (GB)
Title: Portable sample carpet holder
IPC: A47F7/16
Filed: 1965-02-17
Abstract: 1,023,970. Sample book; handles for cases. HOWARD ACCESSORIES Inc. Feb. 17, 1965 [July 9, 1964], No. 6900/65. Headings A4G and A4T. The edges of carpet samples are gripped one or two at a time between inwardly extending flanges attached to the sides of a channel member. An assembly of channel members may be secured together by clips integral with a channel on one side at one end and straps carrying a handle may be affixed to the assembly. Multiple channel units may be extruded and secured together via matting channels and ridges and the handle support. Whole carpets may be displayed and turned over on a floor stand formed by the channels.
Patent GB-165914-A (GB)
Title: An improved mechanism for driving and throwing out of gear suitable for cream separators and other machines running at high speeds of revolution
IPC: B04B9/08
Filed: 1920-03-06
Abstract: 165,914. Veau, D. March 6, 1920. Clutckes, free-wheel. - A clutch for driving high-speed machines such as centrifugal separators comprises a wheel b, which drives the machineshaft, mounted loosely upon the driving shaft a and supporting on its hub c an eccentric boss d pinned to the shaft a. A collar f<1> rotatable on the boss d carries an arm f which engages the flanges g of the wheel b. When the shaft a tends to overrun the wheel b, the arm f jams against the flange g, but it disengages therefrom if the, speed of the shaft a is reduced.
Patent GB-412702-A (GB)
Title: Improvements in or relating to means for controlling variable speed gearing
IPC: F16D49/08
Filed: 1933-03-08
Abstract: 412,702. Controlling variable speed gearing. PULS, E. F., 48, Middleton Hall Road, King's Norton, Birmingham. March 8, 1933, No. 7004. [Class 80 (ii).] Relates to a braking device for controlling epicyclic change-speed gearing of the type in which brakes are alternatively applied by preselection, the actual change being effected by relieving the torque as by disconnecting the drive or decelerating the engine. In the arrangements of Specifications 227,460 and 231,146, [both in Class 80 (ii)], the ends of a band for engaging a drum are connected to the arms of a lever which is free to rock and to slide relatively to a fixed fulcrum bar under control from a preselective cam. According to this invention, the ends of the band 2 are connected to a lever 4 pivotally mounted on a floating fulcrum 7 which also carries a brake shoe 10 adapted to engage the drum 1 between the ends of the band. The arms of the lever 4 differ in length so that a rocking of the lever tightens or slackens the band. The fulcrum 7 is preferably supported on a link 8 rockable about a fixed pivot 9. As shown in Fig. 1, the floating lever 4 is held by a cam 11 so that the band 2 cannot bind on the rotating drum 1. When the cam 11 is turned to the position of Fig. 2 by suitable automatic or manual means, the band 2 binds on the drum so as to hold it fast, the pull of the two limbs of the band on the lever 4 being supported by the resistance of the shoe 10 as it is pressed hard against the drum. The torque is taken by the pivot 9. On reversal of the torque exerted by the drum, effected by allowing the driven shaft of the gearing to overrun, the lever 4 is raised to the position of Fig. 1 permitting the cam 11 to be turned under its end so as to hold the band off. Such reversal or relief of torque is necessary to effect a preselected change.
Patent GB-1127695-A (GB)
Title: A method of and a plant for the manufacture of corrugated building sheets
Inventor: SA RENSEN WILLIAM
IPC: B28B1/52
Filed: 1966-02-17
Abstract: 1,127,695. Hydraulic apparatus. F. L. SMIDTH & CO. A/S. Feb. 17, 1966, No. 7011/66. Heading F1P. [Also in Division B5] In a corrugating machine (see heading B5A), a pair of lifting devices 18 and 17, actuated by hydraulic cylinders 100 and 101, are carried by a cylinder 70 which is reciprocable over a horizontally disposed fixed piston 71. The cylinder is provided with brake chambers 81 and 82 each of which communicates, via throttle valves 85 and 86, with the chambers 76, 77 respectively (77 not marked) located either side of the piston. The brake chambers are connected to the cylinders 100 and 101 via non-return valves 95 and 96 and the chambers 76 and 77 via braking valves 85 and 86. In operation, the cylinder is moved to the left by introducing fluid into chamber 76 via hollow piston rod 74 and apertures 72, this movement being braked when the apertures 73 become located in brake chamber 82 and the exhaust fluid has to pass from chamber 77 via throttle valve 84 to the piston rod 75 and thus out of the system. When the end point has been reached, the fluid supplied to chamber 76 flows through valve 93 and actuates the cylinders 100 and 101, the exhaust from the cylinders passing through conduit 99 valve 96 and conduit 90 to the brake chamber 82 and thus out of the system. The reverse movement of the cylinder is initiated by introducing fluid into chamber 82 and exhausting it from 76. The fluid initially passes from chamber 82 around conduit 90 and through valve 92 to chamber 77 and then passes directly to chamber 77 when aperture 73 are clear of chamber 82.
Patent GB-990794-A (GB)
Title: Preparation of ª‡-nitro ªŠ-caprolactam
Filed: 1962-02-22
Abstract: a  - Nitro - e  - caprolactam is prepared by hydrolysing a nitration product of 2-chloroazacyclo - 2,3 - heptene N - carbochloride to produce 3 - nitro - azacycloheptan - 2 - one N-carbochloride in the presence of a water-immiscible organic solvent for the nitro compound, and subsequently hydrolysing the nitro compound in solution in such a solvent by means of further water.  Specified solvents are chloroform, carbon tetrachloride, chlorobenzene, benzene, benzyl alcohol, mixtures of benzene and benzyl alcohol, anisole, 2-phenoxyethanol, nitro methane and nitrobenzene. The hydrolysis temperature is preferably below 50 DEG  C. in the first stage and 80 DEG -100 DEG  C. in the second stage.  A continuous process is described in which the organic phase from the first hydrolysis stage is passed to a second hydrolysis stage and then to a first extraction zone in countercurrent to water passed to the first extraction, the second hydrolysis stage and a second extraction zone, an organic solvent for a  - nitro - e  - caprolactam being passed successively through the second extraction zone, the second hydrolysis stage and the first extraction zone.  The final organic solution may be extracted with aqueous ammonia to obtain a solution of the ammonium salt of the nitrocaprolactam; addition of acid or heating precipitates nitro-caprolactam.  Specifications 867,268 and 867,269 are referred to.
Patent GB-548956-A (GB)
Title: Improvements in or relating to moulding machines
IPC: B22C15/10
Filed: 1941-06-04
Abstract: 548,956. Moulding in shaking-machines. PNEULEC,. Ltd., and PRITCHARD, P. June 4, 1941, No. 7044. [Class 87 (ii)] [Also in Group XXII] The table 10 which receives the mould is guided in its vertical movements by rightangled sleeves 29 which embrace the corners of the table and are adjustable to and from the table in a horizontal direction. The adjusting means comprise a stud 30 secured into the sleeve and extending outwardly through an abutment 31 on the base ; a nut 32 is screwed on the stud outside the abutment, and a spring 33 is interposed between the sleeve and the abutment. Each sleeve is supported by a flange 34 resting on the abutment, and is secured in its-adjusted position by bolts 36 passing through slots in the flange 34 and through bosses on the base. Alternatively, the adjustable guide surfaces may be mounted on the table, the co-operating surfaces on the base being fixed. The guiding surfaces may be formed as separate wear plates. The table is reciprocated by a centrallylocated vertical ram cylinder 12 operated by compressed air. The impact is taken by bosses 14 on the table which engage steel plungers 15 vertically slidable in recesses 16 in the base and seating on rubber buffers 17. Between the base 11 and a sub-base 19 is interposed a vibration-deadening layer 18. Excess upward movement of the table is prevented by vertical bolts 22.
Patent GB-647998-A (GB)
Title: Improvement in or relating to the manufacture of footwear
IPC: A43B21/24
Filed: 1949-03-15
Abstract: 647,998. Shoes. TEWFIK, F. March 15, 1949, No. 7059. [Class 17(ii)] A shoe sole A of crepe rubber, felt, leather or other materials, has an integral or attached extension B at its rear end which is turned downwards and inwards to form a heel E of height according to the pitch of the last, the space D between the two parts of the sole at the heel being filled by plastic wood, rubber, cork, felt or other material. The heel extension B may extend forwards to the sole at the waist to simulate a wedge heel shoe. A heel lift may be attached to the heel if desired. The curved heel part is stated to avoid splashing of mud in walking.
Patent GB-1417834-A (GB)
Title: Starch derivatives
IPC: C08B31/06
Filed: 1974-02-18
Abstract: 1417834 Starch monophosphates HOFFMANN'S STARKEFABRIKEN AG 18 Feb 1974 [23 Feb 1973] 7203/74 Heading C3U A process for the production of a mono-starch monophosphate comprises reacting a starch with an alkali mono- and/or polyphosphate at a pH of from 4 to 7 in the presence of non- oxidizing anions of a strong acid other than phosphoric acid, e.g. hydrochloric or sulphuric acid. The esterification is preferably carried out at a pH of from 4À3-5À3.
Patent GB-398242-A (GB)
Title: Improvements relating to television and like apparatus
IPC: H04N5/20
Filed: 1932-03-11
Abstract: 398,242. Valve amplifying circuits. FERNSEH AKT.-GES., Goerz Allee, Zehlendorf, Berlin. March 11, 1932, No. 7294. Convention date, March 12, 1931. [Class 40 (v).] In optical apparatus for transmitting films, pictures, &c. the amplification at the transmitter of the picture currents is automatically increased or decreased according as to whether the portions of the film &c are dully or sharply contrasted, with the result that a fluctuating output current of approximately contact average amplitude is obtained, and at the receiving station the picture details are reproduced with a uniform range of contrast. Means are provided so that the amplification change does not take place from picture to picture on one film &c. but only according to the general character of an entire film. In the arrangement shown in Fig, 1, the voltage changes applied by a photo-cell F are passed to an amplifier, V, the output circuit of which is associated with a regulating valve E, while the anode circuit of the latter includes a resistance R that is also inserted in the photo-cell circuit. If, e.g. a film with sharp contrasts is being transmitted, the voltages applied to the grid of valve E are relatively large, the output current of this valve is reduced, and consequently the voltage across the resistance R, which is added to that of battery D, is diminished, thus reducing the voltage applied to the first valve of amplifier V, and ultimately the current supplied by power amplifier KV at the receiver to the light source L. A condenser C1, of large capacity in parallel with resistance R prevents the changes being effected rapidly, other condensers C2, C3 and resistance Rg ensure that all frequencies contained in the picture currents are conducted uniformly to the grid of valve E. As a modification, the resistance R may be included in the grid or anode circuit of one of the valves of the amplifier V, so that the amplification factor of the latter is varied. In another arrangement, Fig. 2, based on the fact that dully contrasted films are generally darkly copied and sharply contrasted films brightly copied, the amplification is made dependent upon the general brightness of the film, a resistance R being included in the photocell circuit and determining the voltage applied to the first valve of the amplifier, which is worked on the upper bend of its characteristic curve. When a dark film, e.g. is being transmitted, the photo-cell currents are smaller and reduced voltages are applied to the valve grid. The resistance R in this arrangement may be constituted by a selenium cell or other variable resistance affected by the light passing through the film, and in alternative arrangements, may, either alone or in parallel with another resistance, be included in the grid or anode circuit of one valve of the amplifier. The various arrangements are also applicable to spot-light or daylight transmission.
Patent GB-1218435-A (GB)
Title: Improvements in or relating to bridging devices
IPC: E01D15/127
Filed: 1968-02-14
Abstract: 1,218,435. Portable bridges; bridge-laying vehicles. KLOCKNER-HUMBOLDT-DEUTZ A.G. 14 Feb., 1968 [15 Feb., 1967], No. 7296/68. Heading E1G. A portable bridge symmetrical about its centre and comprising two or more sections 10, 11 stacked on a truck 1 is assembled and off-loaded with the assistance of an arm 9 pivoted on a telescopic box girder 5-2. The girder 2 is pivoted to the truck 1 and tilted by a jack 4. The slidable girder 5 may comprise several roller-mounted telescopic sections 5-6- 7. The arm -9 is movable by three cam-controlled hydraulic jacks, Figs. 27, 28 (not shown), and is provided with rollers and hydraulically-operated gudgeon pins for engaging the bridge section 11. Each bridge section, Fig. 22, comprises parallel tracks 12 connected by cross webs 15, each track comprising a beam including two webs 13 and two double-box chords 14. Power-operated gudgeon pins 29, 30 and associated fish plates are provided for interconnecting the assembled bridge sections. At the bank of an obstruction, Fig. 12, the section 10 is rolled rearwardly along the girder 2 by endless chains 17 while the arm 9 and girder 5 are actuated to roll the section 11 off the section 10 and deposit it on rollers 19 on the partly-extended girder 5. The bridge sections are then interconnected and the girder 5 fully extended by pulleys and ropes to rest the arm 9 on the far bank so that the abridge can be rolled across by the chains 17 and lowered into position. The girder 5 is then withdrawn and the rear bridge end lowered by the arm 9, whereafter the truck 1 may be driven over. Preferably all movable parts are hydraulically driven, and may be controlled manually or automatically. Since the ends of the bridge, sections are symmetrical the bridge may be picked up from the far bank, disassembled and re-stacked and interlocked on the truck girder 2. In a modification, Figs. 3, 17 (not shown) the multi-section telescopic girder 5-6-7 is replaced by a single girder (5') running on rollers in the girder (2) and the vehicle is provided at its front end with retractable ground plates (23) to prevent it tipping over should the girder (5') not reach the far bank.
Patent GB-661871-A (GB)
Title: Improvements in apparatus for working on the surfaces of optical glasses
IPC: B24B13/02
Filed: 1948-03-10
Abstract: 661,871. Grinding lenses. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY & CIREY. March 10, 1948 [March 21, 1947], No. 7400/48. Addition to 652,252. Class 60. The apparatus of the parent Specification has one of the tools 2 arranged with its axis of rotation 0<SP>1</SP>-0<SP>2</SP> in a fixed position and has the guiding means 50 for the blank 1 mounted so that its axis X-Y may be adjusted in relation to the axis 0<SP>1</SP>-0<SP>2</SP>, the guiding means being operatively connected to the grinding tool so that it will be rotated therewith about the axis 0<SP>1</SP>-0<SP>2</SP>. The tool 3 is mounted on a bracket 14 which can be adjusted about a horizontal axis 0<SP>1</SP> and locked by screws 20, 21. The centre of curvature of the tool 3 is at 0<SP>3</SP> and that of the tool 2 at 0<SP>2</SP>, the axis 0<SP>1</SP> being situated at the intersection of the axes 0<SP>1</SP>-0<SP>2</SP> and 0<SP>1</SP>-0<SP>3</SP>. The guiding means, the axis of which is at X-Y, is connected with a part 45 which, together with a part 48, houses a spherical enlargement 42 on the shaft of the tool 2. A pin and slot connection between the parts 45 and 42 allows relative angular movement while maintaining the drive from the shaft to the part 45. The latter is rotated in a ballbearing 52 the outer race of which is secured to a bracket which can swivel about the point 0<SP>2</SP> and be locked in position by bolts 55. A bowl 58 secured to the part 45 is supplied with a quantity of abrasive-containing liquid so that, as the bowl rotates, the liquid will flow through stationary pipes 63, 64 to be directed on to the faces of the work. A watertight sleeve 60 seals the bowl. In a second embodiment this sleeve and the pin and slot connection are replaced by an elastic member bonded to the parts 42 and 45. A needle bearing may be substituted for the roller bearing. The blank may be positioned and removed by a suction system.
Patent GB-168614-A (GB)
Title: Improvements in means for starting internal combustion engines
IPC: F01L13/00
Filed: 1920-03-12
Abstract: 168,614. Goudge, J. A., (Heywood, C. F.). March 12, 1920. Starting.-Compressed air or gas is supplied to the cylinders in turn of a multi-cylinder engine by an engine-driven distributing valve or a series of cam-actuated beat valves, the distributor being arranged to supply a relatively large quantity of starting-fluid to one cylinder on the working stroke and at the same time a smaller quantity to one or two cylinders next in the order of firing. In one form, Fig. 1, a rotary engine-driven valve 9 has a port registering in turn with ports 5 leading through pipes 6 to the individual cylinders. Compressed air or gas is admitted by a pipe 3 and naphtha or hydrocarbon by a pipe 15 and non- return valve 16 to a small valve conduit 14 leading to a port 5 in advance of that to which compressed air or gas is admitted. A screw 17 regulates the admission of air or gas to the conduit 14. The pipes 6 lead to non-return valves on the cylinders, and may be fitted with test cocks. In a modification, the mixture of fuel and air is effected outside the valve chamber 1 and the valve 9, Fig. 8, has slots 33, 34, 35 of different width, which register with ports leading respectively to cylinders on the explosion, compression, and suction strokes. The valve spindle may carry distributor contacts in a primary or secondary igni. tion circuit. In a form comprising cam-actuated lift valves, the cam shaft may be mounted in eccentric bearings so that it can be put out of action when the engine has started, or cam rollers may be mounted on a displaceable rod for interposition between the cams and the valve-rods. The compressed air may be supplied to a container by an engine-driven pump, the inlet valve 37 of which, Fig. 10, is automatically held open when the pressure in the container reaches a certain limit. The valve is opened by a rod 49 actuated through levers 46, 48 by a piston in a cylinder 42 connected to the receiver. The levers 46, 48 work on a fixed pivot 47 and are controlled by a spring 50 to give a snap action. The rod 49 may be in one with the valve 37. The container may alternatively be supplied with burnt gases under pressure from one of the cylinders.
Patent GB-162878-A (GB)
Title: Improved shock-absorbing mechanism
IPC: F16F1/10
Filed: 1920-03-12
Abstract: 162,878. Philips, W. G. March 12, 1920. Spring mountings of articles.-A shockabsorbing device consists of a casing H connected to a shaft A by a series of volute springs f placed side by side and having their ends E spaced equally round the casing. In the arrangement shown in Figs. 2 and 3, four springs are used, one only being shown in Fig. 3, and are spaced at 90‹ apart. The springs extend through more than a semicircle and their hooked ends E engage recesses N in the casing. The casing has flanges R to hold the springs in position. Specification 7644/14 is referred to.
Patent GB-235946-A (GB)
Title: Improvements in or relating to fluid power transmission and apparatus operated thereby
IPC: B25D9/08
Filed: 1924-03-24
Abstract: 235,946. Curti, E. March 24, 1924. Percussive tools.-A piston pump for actuating pneumatic tools is driven through interchangeable cams by which the suction and pressure periods may be varied in length, and if required the piston may be held at rest during a part of the stroke. Percussive or twist drills &c. are provided for use with the pump. The pulsator pump shown in Fig. 1 comprises an electromotor which drives a, cam 10 actuating the piston in its downward stroke through a roller 7 carried by a lever arm the upstroke being affected by a spring 5 within the hollow piston rod 4, the spring being adjusted by a screw cap 6. Fig. 5 shows a cam so shaped as to provide gradual down and up strokes during half of a revolution, followed by a condition in which the piston is at rest during the remainder of the revolution. By using a cam of another profile, the relative times of up and down strokes and of rest may be altered. In a modification, a slot cam engaged by a roller on the piston rod may replace the edge cam shown in Fig. 1, the spring being dispensed with. The roller 7 may also be attached to the top end of the piston rod, or it may be dispensed with. The pump may be double acting, a pipe line from each side of the pump leading to the same tool. Fig. 20 shows such a pump combined with the barrel 16 of a tool; the striker 17 is acted upon by the pressure or suction on both sides. Fig. 7 shows a separate tool such as a chisel, plate caulker, etc.; an elastic cone 18 cushions the upward stroke; atmospheric pressure is restored in the piping through a valve 19 above the cone when the pump is at rest. Figs. 9 and 10 show a twist drill in which the barrel comprises chambers 36, 42 divided by vanes 37, 43 on a tube 32. The air impulses which reciprocate the striker oscillate the tube and through a ratchet rotate the drill which is secured to a disc 47. The striker acts as a distributing valve by opening and closing ports which lead to the chambers 36, 42. By providing spring cushions on each side of the striker, it may be caused to act merely as a distributor giving the tool a pure rotary motion. Fig. 16 shows a reciprocating tool operated by compressed and atmospheric air supplied alternately through the pipes 67, 68', a distributor 68 controlling the connections of the ends alternately with the pressure supply and with atmospheric ports 73, 74. Fig. 17 shows a tool having a striker 85 integral with a rod 85' cut away to form grooves 86 by which air passes at the required times through a passage 88 to a chamber containing a vane 89 of a distributor disc 84, ported to co-operate with ports in the cylinder end. When the striker is nearing the end of its downward stroke, the rise in pressure below it forces air through a valve 99 and passage 100 to act upon a second vane 101 and reverse the position of the disc. Specification 107,791, [Class 102 (i), Pumps &c.], is referred to.