baber/WOPTO huggingface dataset:
Patent GB-984587-A (GB)
Title: Apparatus for forming packages from heat-sealable packaging material
IPC: B65B51/30
Filed: 1963-03-22
Abstract: 984,587. Seaming non-metallic sheet material. WELDOTRON CORPORATION. March 22, 1963 [April 16, 1962], No. 11527/63. Heading B5K. [Also in Division B8] A sealing head for reducing tension on the material adjacent to the seam during the welding and cutting operation comprises a U-shaped clamp 174 which holds the material against a lower bar 158. Subsequent closing of the head causes an inner bar 134 of aluminium to bear against the bar 162 and push it into a groove against springs 164, thus relieving tension of the material during the impulse heating of element 142. The lower and upper sides of bars 134, 162 are covered with an electrical insulating material, the upper one being thin enough to allow heat to quickly flow through it after the welding, and be conducted away by the aluminium. Further strips of insulating material are provided on either side of the tensioned element 142 so that only about two-thirds of the element project. One end of the element 142 is connected by a tensioning spring, to ensure uniform expansion and contraction, to an insulating block and the other end by a conducting block to a terminal.
Patent GB-1021101-A (GB)
Title: Improvements in blowers and motors with cooperating rotors
Inventor: ROBERTS KENNETH LEONARD FRANCI
IPC: F01C21/02
Filed: 1961-03-29
Abstract: 1,021,101. Seals. WADE ENGINEERING Ltd. March 28, 1962 [March 29, 1961], No. 11535/61. Heading F2B. [Also in Division F1] The rotor shafts 6, 8 of a Roots blower are mounted in bearings 10, 12 in a housing external to the blower casing to permit differential thermal expansion between the casing and the gears connecting the shafts (see Division F1). Sleeves 48 integral with the housing pass through apertures 50 in the casing and carry sealing rings 52 which engage the walls of the  apertures and permit relative transverse movement. Rotary seals for the shafts within the housings each comprise a sleeve 56 with circumferential ribs 62, and an oil slinging ring 58, both fixed to the shaft 6, a carbon ring 64 press-fitted within the housing, and a sealing ring 68 which carries a further carbon ring 66 pressed against the radial flank of the sleeve 56 by a spring 70. The sealing ring 68 is also formed with grooves 78, which may contain  resilient 0-rings. A space 80 is vented to  atmosphere through holes 82.
Patent GB-324296-A (GB)
Title: Improvements in combination locks
IPC: E05B67/22
Filed: 1929-04-15
Abstract: 324,296. Ravigneaux, P. April 15, 1929. Locks, permutation; padlocks.-The hasp D, Fig. 2, moves with a plate A having projections a<1> and is released by turning four locking cups B' until slots b<1> in them register with the projections a<1>. These cups are moved by one or more lugs K, Fig. 6, on buttons J, which are inserted in holes K<1>, Fig. 5. With the hasp raised the projections a' clear the plate m and the combination can be changed by pushing the plates m inwards and engaging the lugs in different holes in the cups B'. Corrugations on the cups allow a spring 114, Fig. 8, to click as the cups are turned, so enabling the lock to be opened in the dark; the zero is fixed by lugs K<2> which bear on the bolt projection a<1>. In a modification, Fig. 8, the hasp is locked at p<1> and s by a transverse bolt which is moved by means of a push button q when the cups B<1> are correctly positioned. The hasp is held in the open position by the bolt extension S which bears on a flat t<1>. To change the combination the bolt must be pushed further inwards to carry the projection a' clear of the cups.
Patent GB-276622-A (GB)
Title: Improvements relating to current rectifying apparatus
IPC: H01L21/16
Filed: 1927-04-30
Abstract: 276,622. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Geiger, P. H., Brown, W. S., and Ackerly, D. G.). Aug. 26, 1926, [Convention date]. Coating. - In solid unidirectional conducting devices employing metal bodies coated, with a compound of the metal as described, for example, in Specification 257,305, the compound is formed on a part only, or to a greater extent on one part, of the surface of the metal body. In one form, copper blanks A are arranged in pairs on a support B with their adjacent faces in contact and heated in an oxidizing atmosphere with the result that coatings of cuprous oxide D and cupric oxide C, Fig. 3, are produced which are thinner on the adjacent surfaces A<1>. The blank is then treated with a cyanide solution, for example a. solution of sodium or potassium cyanide, until both oxide coatings have been removed from the surface having thin coatings and the cupric oxide coating has been removed from the other surfaces, leaving the blank with a cuprous oxide coating extending as indicated at D, Fig. 4. The formation of oxide on one surface during the oxidation treatment may be avoided by assembling the blanks in notches on the support B, the notches having inclined faces 1, 2, Fig. 10, so that the blanks, are held in close contact, and by placing a ring G round the peripheries of the blanks to exclude the oxidizing atmosphere from the adjacent surfaces. According to an alternative method, a layer of deoxidizing material such as carbon is inserted between the blanks to prevent oxidation of the adjacent surfaces. In all cases, the outer layer of cupric oxide is removed after the oxidation treatment.
Patent GB-528187-A (GB)
Title: Improvements in and relating to conveyors
IPC: B65B51/18
Filed: 1939-04-18
Abstract: 528,187. Endless-belt conveyers. ROSE, A. G., and ROSE BROS. (GAINSBOROUGH), Ltd. April 18, 1939, No. 11655. [Class 78 (i)] In conveyers for conveying cardboard boxes &c. from a sealing device to a delivery station and exerting pressure thereupon during the movement, the pressure rollers which bear upon the upper belt are supported at one end only on arms pivoted about axes parallel to the axis of the belt driving roller, said arms being so arranged that alternate rollers are supported at opposite ends. Each pressure roller 36, Fig. 1, with the exception of the end ones, is rotatably mounted on a spindle 37 carried in brackets 38, Fig. 2, secured to a rod 39 which is attached to an arm 41 pivoted at 42 to the upper side rails 8. Spring means may be provided on the arms to cause additional downward pressure. The rollers nearest to the driving roller 26 and idler roller 28 are mounted in pairs of arms 43, 44, respectively, which are disposed to clear the adjacent arms 41. A forked lever 47 carrying an adjustable weight 48 is secured to the shaft 46 to which the arms 44 are attached. A roller 49 is provided on this shaft for the belt 27 to bear against when it is pushed inwardly by a container. Slack in the upper run of the belt 27 is taken up by a roller 51 which is mounted in a pivoted weighted member 52. The driving roller 26 is free on its shaft 24 and carries a pawl 33 which engages a ratchet wheel 32 on the shaft. The latter is driven by a motor 63 through reduction gear 64 and chain-and-sprocket gearing 62. The driving roller 12 for the lower belt 13 is driven from the shaft 24 through chain-and-sprocket gearing. The belt 13 is tensioned by a roller 19 mounted in arms 21 and connected to a screw adjusting device 22. As a container is fed from the sealing device 72 it strikes the bar 74 of a switch member 76 and starts the motor 63. The belts 13, 27 are driven until the bar 74 springs back behind the container.
Patent GB-270088-A (GB)
Title: Improvements in or relating to telephone transmitters
IPC: H04R21/02
Filed: 1926-05-03
Abstract: 270,088. Rickets, W. J., and Smith, E. E. May 3, 1926. Throat-operated and like transmitters; microphones. - A member 6 in a telephone transmitter designed to bear against a part of a speaker effected by vibration of the vocal organs is made aperiodic, resilient and capable of accommodation to the contour of the influencing- surface, and actuates a movable electrode 3 through an enclosed deformable but incompressible sound-transmitting medium 7. The hollow pad 6 may be made wholly of rubber or mainly of rigid material, with a domed resilient membrane next to the speaker and a diaphragm connected to the movable electrode. The soundtransmitting medium consists of glycerine, brine, or other liquid with a low freezing-point, or spongy rubber with its interstices filled with liquid. The frame 5 enclosing the microphone is carried by a support 9 which rests on the speaker's head.
Patent GB-821634-A (GB)
Title: Improvements in or relating to the production of hollow articles from thermoplastic materials
IPC: B29C33/00
Filed: 1956-04-17
Abstract: 821,634. Moulding hollow thermoplastic articles. PLASTOMATIC Ltd. April 17, 1956 [May 9, 1955], No. 11687/56. Class 87(2). A method of moulding hollow articles, e.g. refrigerator parts, boat parts, car bodies, containers, buoys, pontoons, pipes &c. from thermoplastic material, e.g. polyethylene, comprises placing unmelted material in a mould, inserting the mould in a radiant heating device to heat the exterior of the mould so that the material adjacent the mould wall is melted, controlling the heating to determine the amount of material melted and hence the wall thickness of the article produced, removing unmelted material from the mould, removing the mould from the heating device and the article from the mould. A mandrel, which may be expandable to exert pressure, may be placed in the mould to reduce the quantity of material required. Inserts of metal, wood, glass or plastics may be embedded in the moulded article. In the moulding of a bath, material 7 is placed in the space between the moulding 2 and a mandrel, 6 the mould 2 is placed within but spaced from a metal shell 1 disposed in a heating bath containing heaters 4 and the method is carried out. After the removal of the mandrel and unmelted raw material the mould may be left in the shell 1 until the inner surface of the moulded article becomes smooth.
Patent GB-1496461-A (GB)
Title: Composition for corrosion protection
IPC: C23F13/00
Filed: 1976-03-23
Abstract: 1496461 Coating composition for corrosion protection HOOKER CHEMICALS & PLASTIC CORP 23 March 1976 [9 April 1975] 11718/76 Heading C3B A coating comprises a binder, e.g. an epoxy resin, and a filler. The filler is present in an amount sufficient to impart corrosion resistant characteristics to the composition and includes an alloy of Si with at least one active metal (i.e. Mn or one above Mn in the electromotive series), or a silicide of said active metal which is unstable when introduced alone into water, or mixtures thereof. The binder may comprise 3-70% by wt. of the composition and the filler 20-95% by wt. of the composition. The filler, which may have a particle size of 1-10 microns, may be a silicide of, or alloy of Si with, Ba, Ca, Mg, Al, Li, Ce, Ti, La or Mn.
Patent GB-332241-A (GB)
Title: Improvements in apparatus for the treatment of fish materials
IPC: A23K1/10
Filed: 1929-04-16
Abstract: 332,241. Haslam, W. H. April 16, 1929. Roller and roiler-and-breast mills.-In making fish meal or powder from fish offal &c. a grinder 8 is employed and consists of a pair of feeding and crushing rollers 30 geared together by gearing 31, one of the rollers having a sprocket wheel 32 driven from another sprocket. A pair of tearing, cutting, or mascerating rollers 33 formed of rotating spaced-apart circular knives or toothed discs are also provided and are connected by gearing 34 and driven by gearing 3'5 connected to one of rollers 30. Two or more pairs of the crushing rollers 30 and of the cutting rollers 33 may be included and arranged above each other. The rollers may be yieldably mounted in sliding spring-controlled bearings.
Patent GB-548414-A (GB)
Title: Improvements in and relating to airscrews
IPC: B64C11/20
Filed: 1940-07-15
Abstract: 548,414. Airscrews. ROTOL AIRSCREWS, Ltd., CHARLES, H. N., and NEWPORT, H. July 15, 1940, No. 11735. [Class 114] In an airscrew in which the blades are made of comparatively soft material such as wood, the leading edges of the blades are reinforced by a mild steel or like metal backing provided with a sharp cutting edge of very hard steel. Fig. 2 shows a thin sheet steel channel 12 shaped internally to fit the edge 11 and the two faces of the blades 10 to which it is secured by recessed wood screws 13. The heads of the screws are soldered over to render them water tight, and the edges 17 of the channel also are sealed. A deposit 15 of steel is secured to the base 14 of the channel 12 by a welding process, and to this deposit is welded a strip 16 of hard steel with a sharp cutting edge. The channel may be recessed into the surface of the blade and secured thereto by solid or hollow rivets, whilst the base of the channel may be apertured to provide a key for the metal 15. Fig. 4 shows a hard steel edge 24 and backing 25 welded to a metal strip 26 inset in the leading edge of the blade. The backing 25 may be omitted. The reinforcing edge may be in short sections or in a continuous length.
Patent GB-660994-A (GB)
Title: Improvements in or relating to stereoscopic reproduction
IPC: G03C9/06
Filed: 1948-04-29
Abstract: 660,994. Stereoscopic photography. ROGERS, G. L. April 8, 1949 [April 29, 1948; June 25, 1948], Nos. 11802/48 and 9538/49. Classes 97 (i) and 98 (ii). An anaglyph for the subsequent stereoscopic presentation of an object in colour comprises at least three positive images of the object in superposed and substantially registered relationship, one of said positive images being representative solely of the blue-coloured components of the object as seen from a first view point and dyed or printed in yellow and the other positive images being representative of the other coloured components of the object as seen from a second viewpoint and each being dyed or printed in a colour complementary to that of the colour component it represents. Such an anaglyph may be formed by exposing, in a stereoscopic camera 10, Fig. 2, a bipack 16 to light passing through a yellow filter 14 and a lens 12 and another film 15 to light from a lens 11 and a blue filter 13. The emulsions of the bipack are sensitized respectively to the red and green colour ranges and a filter passing only light to which the rear emulsion is sensitive is inserted therebetween. Colour separation positives of the images of the red, green and blue components of the object 0 are then prepared and printed in cyan, magenta and yellow respectively. These positives are superposed and, when viewed with a blue filter over the left eye and a yellow filter over the right eye, a stereoscopic effect is obtained. The yellow filter over the right eye may be omitted. A single lens camera may be used, two or more images being taken with the camera in one position and the image of the blue coloured components of the object being taken with the camera in a second position at a distance from the first, equal to the interocular distance. The filters 13, 14, Fig. 2, may be omitted when colour films 15, 16 are used, the required colour separation positives of the red, green and blue coloured components of the object being obtained by known methods. Alternatively, a camera as shown in Fig. 6 may be used. The lens 21 of this camera has associated therewith a blue filter 22 whereby the blue coloured component of the object as seen from a left eye viewpoint are recorded on a film 23, and lens 24 has associated therewith a beam splitter 25 whereby some light passes through a green filter 29 on to a film 27 and the rest passes through a red filter 28 on to a film 26. Again, an anaglyph may be produced using a single lens camera and a colour film by placing in the front of the lens a beam recombining device of the double prism type through which is transmitted a beam from the object after passing through a blue filter and by which is refluted a beam from the object after passing through a yellow filter and a prism disposed to one side of said beam combining device. The colour separation images may be provided on separate transparent sheets which are relatively slidable in parallel planes so that the registration of the images may be varied if desired.
Patent GB-500155-A (GB)
Title: Improvements in or relating to cable connexion sockets or glands for use with portable electric machines such as are used in mines and the like
IPC: H02G3/06
Filed: 1938-04-20
Abstract: 500,155. Binding - posts; earth continuity couplings. CROFTON & CO. (ENGINEERS), Ltd., and CROFTON, H. B. April 20, 1938, No. 11884. [Class 38 (i)] A socket or gland for the connection of a cable to a portable machine is furnished with an earthing device for connecting an earth wire of the cable to the casing of the machine. The gland 1 is bored laterally and tapped to receive a screw plug 3 with central projection 3a by which the earth wire 4a is clamped against a washer 2. The washer may rest upon a shoulder 1b formed by a reduction in the diameter of the bore, or if the bore is of uniform diameter and screw threaded throughout, the washer may be screwed into the bore.
Patent GB-1173962-A (GB)
Title: Improvements in Optical Profile Projection Systems
Inventor: DEMAINE DAVID
IPC: G02B21/00
Filed: 1967-03-14
Abstract: 1,173,962. Profile projection systems. HILGER & WATTS Ltd. March 6, 1968 [March 14, 1967], No.11927/67. Heading G2J. In order to avoid the necessity of mounting large or heavy objects for movement towards and away from a profile projector, the latter has a lens system comprising a compound lens whose components are so arranged that they may be adjusted in position so that the distance between the object and image planes may be varied without change of magnification. As shown two pairs of components A, B, and A<SP>1</SP>, B<SP>1</SP> are arranged on opposite sides of a negative field flattening member C, C<SP>1</SP>, the back focal plane of A, B, coinciding with the front focal plane of A<SP>1</SP>, B<SP>1</SP> to render the system afocal. Since the combined power of a pair of lenses is a simple function of their two powers and their distance apart, the separation of the object and image planes may be varied by symmetrically altering the separation between the components of the pairs A, B and A<SP>1</SP>, B<SP>1</SP> by moving A and A<SP>1</SP> outwardly and adjusting B and B<SP>1</SP> to maintain the system afocal.
Patent GB-1364940-A (GB)
Title: Frequency modulation transmission system
IPC: G08C19/12
Filed: 1973-03-13
Abstract: 1364940 Frequency modulation transmission system PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 13 March 1973 [16 March 1972] 11972/73 Heading G4H In a system for transmitting as frequency modulation discrete instantaneous values of an information signal and demodulating the modulated signal at a receiver by a counter which counts pulses derived from the transmission for the period between regular pulses which reset the counter, the counter reading at the end of the period being the desired value, there is arranged before the frequency modulator a transmission network with substantially frequency independent time delay up to the highest frequency of the information signal and an amplitude characteristic A b (f) given by where A 0  is the attenuation for f=O and T 0  is the time spacing of the reset pulses and is less than the period of the highest frequency of the information signal. The information signal may be converted to an electrical signal by a transducer with the desired characteristic or the electrical transducer output may be modified by an electrical network which is preferably four terminal and may incorporate an amplifier. A suitable network is shown in Fig. 2. R and R 1  are related to A 0  by the equation A 0  = R/R 1  + R and L and C are given by and
Patent GB-903745-A (GB)
Title: Apparatus for measuring the acceleration of a moving body confined to a predetermined path
IPC: G01S13/92
Filed: 1959-04-09
Abstract: 903,745. Radar. WESTINGHOUSE AIR BRAKE CO. April 9, 1959 [April 9, 1958], No. 11976/59. Class 40 (7). The acceleration of a body confined to a predetermined path is measured by differentiating a signal derived from a directional Doppler-effect radar. Unbalanced magic-T 8 provides at mixer 11 a signal leaked from C.W. transmitter 10 and a signal reflected from a car moving on railway 1a, 1b towards directive aerial 3. After amplification and limiting by unit 14 the Doppler beat frequency produces an output voltage proportional to car speed from cathode-follower 35 of frequency meter 5, the output voltage being differentiated and amplified in unit 46 which thereby feeds a voltage proportional to car acceleration to unit 51. Bias potentiometer is adjusted to correspond to the track grade and the output voltage from unit 51 represents the rolling resistance of a car in track section IT. This output may be fed to railway classification yard automatic control apparatus as described in Specification 903,741, via contact a of track repeater relay ITP. In an alternative embodiment the radar receiver Doppler beat frequency output is fed to a mixer directly and via a predetermined time delay provided by a rotating magnetic tape drum with spaced recording and reproducing heads, the mixer output frequency thus being proportional to car acceleration and is measured by a frequency meter of the kind described in the first embodiment, Fig. 2 (not shown). U.S.A. Specification 2,908,765 also is referred to.
Patent GB-686523-A (GB)
Title: Improvements in, or relating to, methods and apparatus for securing two different lengths of path of the slurcock, and driving heads of the thread guides on a cotton knitting machine
IPC: D04B11/00
Filed: 1948-05-03
Abstract: 686,523. Knitting-machines. BATA, NARODNI PODNIK. May 3, 1948. [May 8, 1947] No. 12062/48. Class 74 (ii). In a cotton machine, to vary the throw of the draw lever and so to change from one to the other of two different lengths of path of the slurcock and of the thread guide driving heads, a slide block, which transmits the drive to the draw lever, is displaced from one end position to the other in a guide slot in the draw lever, during the sinking of a single course of loops, by a member forming part of the draw mechanism. The lever 18 driving the slurcock 29 is oscillated by a slide 8, reciprocated, with a dwell at the end of each stroke, by a cam 1 driven at half main cam-shaft speed. The slide is coupled to the lever by relatively rotatable blocks 14, 16 working in slots 13, 17 in slide and lever. The block 14 carries a rack 31 by which a pinion 32, borne on the slide 8, can raise or lower both blocks, to vary the stroke of the lever. The pinion 32 is fast with a pinion 34 engaging a rack 35 slidable along the slide 8, but locatable in alternative positions by a spring-pressed detent 51 on the slide 8. A bar 42, slidable along the rack 35, carries a ramp 43 which can act on inclined faces 52 on the detent to release it. Towards the end of a stroke, the bar 42 is arrested by engagement of an adjustable abutment 44 thereon with a tooth on an abutment disc 58. The rack 35 moves on until it is released from the slide 8 by the ramp 43 and is arrested by engagement of an adjustable abutment 38 which it carries with the tooth on the disc 58. Thereupon the pinion 34 rolls along the rack 35 causing the blocks 14, 16 to be moved along their slots to their other position, in which they are secured by location of the rack 35 in its alternative position by the detent 51. The abutment discs 58 are located, with their teeth in staggered relationship, on a shaft 57 which is racked round half a tooth pitch at a time, from a control drum, during the dwell of the slurcock. The movement of the blocks 14, 16 occurs during the sinking of a single course of loops. The draw lever 18 drives the slurcock 29, through a gear sector 20, pinions 21, 22, 24 and a worm 27 engaging small rollers 28 on the slurcock.