baber/WOPTO huggingface dataset:
Patent GB-640712-A (GB)
Title: Improvements in and relating to rotational speed indicators or tachometers
IPC: G01P21/02
Filed: 1947-04-01
Abstract: 640,712. Speedometers. BAILEY & CO., Ltd., Sir W. H., and BAILEY, D. April 1. 1947, No. 8763. [Class 106 (iii)] A speed indicator for a rotating spindle 5 comprises a fixedly mounted reed 8 which is vibrated by the action of flats 6 when pressed against the spindle and has its free end visible, e.g. in a slot 9 in the indicator face, the maximum amplitude of reed vibration, corresponding to a particular speed of the spindle, being known. As shown, the reed is used for testing a known speed indicator. The reed is pressed on the spindle by a plunger 10 and the reading of the indicator dial (not shown) is examined for the particular speed of the spindle indicated by the reed. If the reading is wrong, the dial scale can be adjusted.
Patent GB-749938-A (GB)
Title: A process for the preparation of phenyl-halosilanes
IPC: C07F7/12
Filed: 1954-03-25
Abstract: Phenylhalomonosilanes are prepared by heating a halopolysilane in which the silicon atoms are connected by phenylene links and which may contain monovalent hydrocarbon groups, with benzene in the presence of a boron or aluminium halide as catalyst at a temperature of 150 DEG  to 450 DEG  C., preferably under superatmospheric pressure.  The polysilane starting materials, which are by-products in the commercial preparation of phenylhalosilanes, vary from dimers to complex cross-linked polymers.  The hydrocarbon substituent may be saturated or unsaturated aliphatic, cycloaliphatic or aromatic.  The catalysts are generally used in amount of 0.5 to 5 per cent by weight of the reaction mixture, and may be used singly or in combination. When using aluminium halides, which are more effective, they are preferably removed from the mixture before distillation, e.g. by precipitating a complex with sodium chloride.  The examples describe the preparation of phenyltrichlorosilane, diphenyldichlorosilane and phenyldichlorosilane.
Patent GB-874822-A (GB)
Title: Improvements in and relating to control devices responsive to coded electrical call signals
IPC: H04M19/04
Filed: 1960-03-14
Abstract: 874,822. Electric calling-systems. GENE. RAL MOTORS CORPORATION. March 14, 1960 [March 16, 1959], No. 8874/60. Class 40 (1).  A device responding to a specified call signal 2, Fig. 4, consisting of a series of groups of stepping pulses each group corresponding to an integer, the stepping pulses being accompanied by latching pulses 3, Fig. 4, each beginning and ending with one of the groups of stepping pulses 2, comprises a toothed code wheel 40, Figs. 2 and 3, spring-loaded to a home position, a step. ping magnet 68 energized by stepping pulses adapted to drive the wheel 40 through the pawl 80, a magnet 86 adapted to receive the latching pulses and to engage a latch member 100 with the teeth 50 when it is engaged to prevent the code wheel returning to its home position between the pulses of each integer group. The call signal to which the device will respond is determined by a number of code pins 56, 58, 60, 62 which are mounted on the code wheel, being adjustably engaged in holes 52. These are engaged between groups by a stop member 108 mounted on arm 98 secured to the latching magnet armature 90. The latching magnet is de-energized between groups, the armature 90 falling to the position shown in Fig. 2. The stop 108 then stands in the path of one of the pins 56-62 to prevent backward rotation of the code wheel. To ensure that the device responds only to pulse groups properly separated by a space, there is a catch plate 112 pivoted to arm 98 at 114 which has an upstanding flange 116. In order that a pin shall be able to pass the flange the latching magnet must be de-energized. If pulse groups are received having more pulses than the equivalent groups in the specified call signal, the pin 56 (say) bears on the flange 116 and swings the plate 112 so that its camming surface 118 displaces the pawl 80 out of contact with the teeth 50. The code wheel then returns to its home position. The reception of a correct sequence of integer groups e.g. 55, 274 causes a contact on pin 64 to engage a contact arm 110 on the latching magnet armature 90. The device is reset by a single pulse on both magnets. The call signal may be transmitted by radio as alternate frequencies 1, Fig. 4. This single signal is converted into stepping pulses 2, Fig. 4, and latching pulses 3 for application to the magnets 68 and 86.
Patent GB-177786-A (GB)
Title: Improvements in pipe joints
IPC: F16L23/18
Filed: 1922-03-29
Abstract: 177,786. Klerner, H. March 29, 1921, [Convention date]. Void [Published under Sect. 91 of the Act] Overlap joints with packinq at base or mouth. of socket.-In a pipe or like joint the ends of the pipes 1, 2, Fig. 1, formed with flanges 3, 4, carry rings 5, 6 drawn together by bolts 11, and the adjacent corners of the flange 3 and the portion 4' of the flange 4 are cut obliquely to form an annular passage 8<a>, an annular projection 9 being preferably formed on the ring 5. Packing-rings 7, 8 are inserted between the ends of the flanges 3, 4, and in the groove 8a respectively. In a modification, flanges 13, 14, Fig. 2, on the pipe 11<a>, 12, are embraced by a ring 23, adjacent corners of the flanges 13, 14 and ring 23 being cut obliquely to form annular grooves 18a in which are inserted packing-rings 18, annular projections 19 being preferably provided on the tightening- rings 15, 16. The pressure of the tightening- rings may be transmitted to the flanges through the packing-rings 8 or 18, in which case these rings are formed of comparatively solid material.
Patent GB-1488874-A (GB)
Title: Bulb holder
IPC: H01R33/09
Filed: 1975-01-31
Abstract: 1488874 Lampholders LUCAS ELECTRICAL Ltd 31 Jan 1975 [28 Feb 1974] 9077/74 Heading H2E A capless bulb housing 11 comprises conductive rubber contacts 16, 17 which physically and electrically engage the spigot 21 of the capless bulb. The contacts 16, 17 are connected to conductive strips 15, 14 respectively the latter of which 14 is joined to a terminal pin 13. The rubber may be natural or synthetic and is loaded with conductive particles to make the rubber conductive in its relaxed state. The housing shown is part of a switch.
Patent GB-316235-A (GB)
Title: Improvements in telescoping supporting legs, particularly for tripods or other supporting devices for cameras and the like
IPC: F16B7/10
Filed: 1928-03-26
Abstract: 316,235. Zerk, O. U. March 26, 1928. Tripod stands. -A telescopic leg for a tripod stand consists of a number of telescoping sections having at their extremities wedging surfaces between which rigid connections are made by the impacts produced when the sections are permitted to fall freely to extend the leg. As shown in Fig. 2 the lower ends 6 of the sections are inwardly tapered and the upper ends 5 outwardly flared to a corresponding taper. The outer section 20 is secured to a head 22 and the innermost section, which is provided with a foot piece 24, is frictionally engaged by a spring 26 attached to the head 22 to hold the sections in the telescoped position. The head 22 is formed with air holes 27. The tapered end 35 of each section may be formed as shown in Fig. 9 with a portion 33, of relatively large inclinations between the tube 27 and its tapered end 35. The sections are produced from tubing roughly shaped between a pair of reciprocating swaging dies, the engaging surfaces of the tapering parts being machined afterwards. In order to prevent oxidization of the sections, which are preferably made of an aluminium or magnesium alloy, interfering with the rigidity of the connections between the sections when extended, the tapered parts of the sections are cut with circumferential, helical or longitudinal grooves 1, 2. The edges of the tapered portions are chamfered or recessed to prevent the formation of burrs. The outer section of each tripod leg is formed with a bead &c. 3 so that the legs of tripod are spaced apart and can be extended without interference one with another.
Patent GB-834232-A (GB)
Title: Improvements relating to the cooling of dynamo-electric machines
Inventor: ARNOLD JOHN JAMES
IPC: H02K3/24
Filed: 1956-03-26
Abstract: 834,232. Cooling conductors of dynamo-electric machines. BRITISH THOMSON-HOUSTON CO. Ltd. March 1, 1957 [March 26, 1956], No. 9359/56. Class 35. Conductors of rectangular section have a series of grooves therein extending obliquely from side to side across the width of at least one face thereof for the passage of cooling fluid, e.g. hydrogen. Fig. 2 shows one of a number of radially superimposed conductors each with oblique ducts 6 communicating with radial passages 8 at intervals along the slot walls and serving to lead gas from one conductor to the next and also communicating with either the air gap or a sub slot so that some serve as gas inlets and others as gas outlets. In adjacent conductors the oblique passages are in the upper surface of one and the lower surface of the other with inter-bar insulation intervening, but in a modification, Fig. 4, bars are arranged in pairs so that two oblique grooves constitute a single gas passage.
Patent GB-660402-A (GB)
Title: An improved construction of coupling for tractor and trailer units of motor vehicles
IPC: B62D53/08
Filed: 1949-04-06
Abstract: 660,402. Fifth wheel couplings for vehicles. SCAMMELL LORRIES, Ltd., and WATTS, L. D. April 6, 1950. [April 6, 1949] No. 9430/49. Class 103(v). A coupling mechanism for tractor and trailer units of road vehicles of the type in which the forward portion of the trailer is lifted on to and supported by the tractor, the tractor having a turntable, is characterized in that the underside of the lower member 1 of the turntable has a laterally located plate 6 and two L-shaped plates 7, 8 having two limbs parallel to the plate 6 and two other limbs at right angles thereto and spaced apart, means on said plates for supporting the trailer undercarriage, and a transverse beam 11 located in a channel between the plate and the plates, said beam being secured in the channel by pins 15 attached to the plates and passing through apertures 22 in the beam said apertures being spaced one on each side of the centre line of the beam. As shown, the lower turntable portion comprises the plate 1 to which are welded the plates 6, 7, 8 and a flanged tube 4 which provides the turntable pivot. The undercarriage members 24, 27 are pivoted to brackets 9, 10 welded to the plates 7, 8. The transverse beam 11 is of I section and carries rollers 23 which engage ramps (not shown) on the tractor. Sufficientclearance is provided between the pins 15 and apertures 22 to permit a limited amount of lateral rocking motion between the beam and the turntable. Rollers 18, for engagement with locking hooks on the tractor, are carried by bolts 17 in brackets 16 coaxially with the rollers 23. Specification 409,417, [Group XXXI], is referred to.
Patent GB-382674-A (GB)
Title: Improvements relating to illuminated signs, imitation fires and other apparatus embodying flicker producing means
IPC: G09F19/10
Filed: 1932-01-28
Abstract: 382,674. Illuminated signs. QUAIN, J. R., 11, Kinfauns Road, London, and HARRISON, H., 20, Ashfield Road, Birmingham. Jan. 28, 1932, No. 9447/31. [Class 3 (i).] An illuminated sign in which the light from a gasheated mantle 16 is directed through a translucent signplate 15 by a reflector 17, is provided with a flickerproducing device comprising non-vertical luminous gas jets 9 arranged near the front of the casing 14 and agitated by air currents entering through holes 10. Additional flickerproducing vanes 12, 12<1> may be disposed above the mantle 16 and the jets 9.
Patent GB-236675-A (GB)
Title: Improvements relating to token instruments for railways and the like
IPC: B61L23/24
Filed: 1924-04-14
Abstract: 236,675. Roberts, W. S., and Railway Signal Co., Ltd. April 14, 1924. Staff, tablet, and ticket systems.-In a staff or tablet system applicable to single or double lines working on either absolute or permissive system, each staff or other token is appropriate both to a particular section of track and to one direction only of travel in that section and may be further appropriate to permissive or absolute working. The staff &c. instruments at the ends of the section are arranged to receive tokens for both directions, but to issue tokens for one direction only. The receptacle 35 of the instrument 26, Fig. 7 has slots 1, 2 to accommodate, for example, up and down staffs respectively, the slots having different cross-sections to accommodate differently spaced rings on the two types of staff. In addition to having differently spaced rings or collars, the staffs may have distinctly shaped ends. The instrument has the usual locking discs 14, Fig. 4 and pawls 15, 19, pawl 15 engaging a recess 23 in the disc, and pawl 19 engaging the lower end 18 of pawl 15 and serving to move that pawl positively into engagement with the disc. The end 18 is suitably cut away so that both up and down staffs may be inserted but only one type of staff may be removed, a ring on the appropriate staff engaging the end 18 to free pawl 15 and allow withdrawal of the staff. Staffs are transported in magazines generally resembling those described in Specification 21788/14. The slots 1, 2 communicate with corresponding removal apertures 37, 38 normally obstructed by a locked bolt 39. The staffs in the instrument are supported by pivoted stops 45 held in position shown by springs 48 and movable by hand to allow passage of a staff towards its removal aperture, so that removal of a staff is not interfered with by the weight of the column of remaining staffs. The magazine Fig. 9, is placed in position on a table at the base of the instrument, the base having a projection 89 co-operating with a slot 59 in the magazine and so spaced as to ensure use with a particular instrument of the appropriate magazine, separate magazines being provided for different sections, and for up and down staffs. The staffs enter a slot 51 in the magazine through an aperture 57 normally obstructed by a locked slide 52 and spaced to register with the appropriate opening 37 or 38 of the instrument. A key 42 carried by the instrument enters a slot 53 in the magazine, and releases slide 52, opening of which releases a key 54 on the magazine, so that the key 54 may be moved into a slot 41 on the instrument, thus releasing the bolt 39 which may then be moved clear of the required aperture 37 or 38. The locks are of plunger type and the keys of the type described in Specification 199,891, the construction being such that the magazine and instrument are locked together so long as the bolt 39 and slide 52 are in open position.
Patent GB-1141198-A (GB)
Title: Improvements in or relating to impellers, especially for ventilators
Inventor: DALY BRIAN BOWMAN
IPC: F04D29/46
Filed: 1966-03-04
Abstract: 1,141,198. Ventilators. WOODS OF COLCHESTER Ltd. 27 Feb., 1967 [4 March, 1966], No. 9561/66. Heading F4V. [Also in Division F1] A ventilation unit mounted on, a duct 28, Fig. 1, at an opening 2 through a wall or roof 3, comprises an impeller 4 (see Division F1), a resiliently mounted electric driving motor 5, a substantially square cowl 13 and four shutter vanes 15 which are opened automatically by the discharge flow against the actions of springs 24 and gravity. Some of the flow passes between each shutter vane and the cowl to prevent their contact and thereby shutter noise. The cowl, impeller and shutter vanes may be of plastics reinforced, for example, by glass fibre or metal. One or two electric driving motors may be arranged above or below the impeller. Two electric motors may be mounted directly on the impeller shaft or arranged at opposite sides thereof and connected thereto by belt drives, one of the two motors acting as a standby unit. In an alternative embodiment, Figs. 9 to 11 (not shown), each shutter vane is planar and ribbed, and the cowl is hinged about a horizontal axis to a plastics duct (28) so as to be pivotable to a position permitting access to the impeller. In another embodiment, Fig. 12 (not shown), the cowl is replaced by a horizontal square plate (37) above the impeller and a separate short tubular baffle (45) surrounding the impeller, and shutter vanes are pivoted at their lower ends, the arrangement being such that the discharge flows in an upward direction. In an air conditioning unit containing a filter, a number of impellers are arranged side by side each in a substantially bell-shaped cowl with its mouth opening upwardly to deflect the impeller discharge into an axial direction.
Patent GB-535643-A (GB)
Title: Improvements in and relating to electric switches and contacts therefor
IPC: H01H1/36
Filed: 1940-05-31
Abstract: 535,643. Contact members for switches. McNEIL, W. A., PAILIN, G., and FERGUSON, PAILIN, Ltd. May 31, 1940, No. 9569. [Class 38 (v)] A contact-arrangement suitable for oilswitches, comprises a pair of replaceable tips 5, 6 with inclined inner faces 7, and a pair of contact fingers 12, 13 pivoted at 14 to side plates 9 of a U-shaped movable bridging member. The fingers are biassed against stops 19 by springs 15 seating on a block 16 pivoted at 18 between the plates 9, so that when the lift-rod is raised, the contact-pressure in the initial contact-making position 12<11> is considerable and increases towards the fully-closed position 12<1>. In the closed position, electrodynamic forces re-inforce the pressure, assisted by the action of those forces on the strap 20 connected between the tails 12a, 13a.
Patent GB-580976-A (GB)
Title: Improvements in or relating to the heat treatment of metal plates
IPC: C21D9/46
Filed: 1942-07-09
Abstract: 580,976. Heat-treating metal plates. BUDD INDUCTION HEATING, Inc. July 9, 1942, No. 9581. Convention date, Nov. 8, 1941. [Class 72] Equal portions of each face of a metal plate are heated, e.g., by electro-magnetic induction, substantially simultaneously to a predetermined depth without substantially heating the rest of the metal and the heated portions are quenched equally rapidly, so that each face of the plate is hardened to substantially the same depth without bending of the plate. The plate treated may comprise two plates clamped together so that only one side of each plate is treated and the plate may be treated progressively along its length. A frame 10, Fig. 2, carrying rollers 12 is pivoted at 11 to the main frame, so that it can be opened by a handle 13 to allow the placing of a plate 25 against rollers 15 carried by the main frame and then moved back so that the plate 25 is engaged by both the rollers 12, 15. Other rollers not shown engage the sides of the plate and a further pivoted plate arranged at right angles to the plate 10 may be provided. Arranged above the rollers 12, 15 are straightening rollers 22, 23, 24 and the plate 25 is fed up between these rollers by a motor or by a fluid pressure motor comprising a cylinder 26 and a piston 27 and piston rod 28 which extends up to a connection 29 bolted to the plate 25. Between the rolls 22, 23 are arranged inductors 30, 31, and quenching heads 32, 33, supplied with liquid from headers 34, 35, surplus liquid being collected in a trough 36. During the passage of the plate through the rollers 22, 23 other rollers engage the edges of the plate. One of the inductors is shown in Fig. 7, the hollow inducting elements 46 being in a series of laminations 44 beneath a wedge 45 holding them in place and surrounded by insulation 47. The laminations are held in place by a cap 49 clamped to a block 48 by bolts 50, and the inductor is spaced from the wall of the main frame by a block 51 clamped to the block 48 by bolts 52. The quenching head 33 is in two parts secured in position by bolts 81, the lower part being secured to the block 48 by bolts 80, and is provided with an elongated space 77 for the liquid from a pipe 35a and in which is located a baffle 78 which spreads the liquid laterally of the pipe and equalises the liquid pressure, to produce a uniform quantity and velocity of liquid to be ejected by the jet 79. In operation, the plate 25 is placed between the rollers 12, 15, the frame 10 closed and fluid pressure admitted to the cylinder 26. The plate is raised and passed through the straightening rolls and after being straightened is pulled down slowly and propressively heated to the hardening temperature by the inductors and quenched. In another form of apparatus, the rolls and the heating and quenching heads are arranged horizontally, and the plates are pushed through the rolls &c. but in this form the plate is heated and quenched before being straightened.
Patent GB-456633-A (GB)
Title: Rug-making attachment for sewing machines
IPC: D04G3/02
Filed: 1936-04-01
Abstract: 456,633. Sewing - machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.- (Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.) April 1, 1936, No. 9602. [Class 112] [See also Group IX] The attachment described in Specification 455,095 for stitching loops of rope or the like to a backing to form rugs, is improved to permit the loops to be stitched in any desired and evenly spaced relationship by an unskilled operator. The attachment replaces the usual presser foot on the presser bar and consists of a foot carrying a fabric-engaging part 12, a work guide 21, a segmental rope yarn laying member 27 operated by the needlebar 2 and a loop-detaining finger 40. The usual needle-clamping screw is replaced by one with an elongated shank 33, 34 for engaging cheeks on a member 37 pivoted to the ropelaying segment 27 for oscillating this when the needle bar is vibrated. Starting with the parts in the position shown in Fig. 1, as the needle descends, the rope-laying member 27 is swung to the left about its pivot 23 forming a base loop 51, Fig. 7, in its rear. This loop is entered by the needle. As the member 27 continues its movement, the loop 51 is tightened about the needle and the finger 40 is withdrawn from the previous loop, being lifted as the cross-bar 26 of the member 27 engages its hooked part 45. When the motion of the rope-laying member 27 is reversed by the rise of the needle-bar, a new tip-loop 53, Fig. 8, is formed. This loop is entered by the finger 40 which descends under the action of the spring 49. As this action is repeated, the base loops 51 are sewn to the fabric base 54 by the line of stitches 55. The bases of the loops of the previously stitched row are guided by the edge-guide 21 and pass under the guard-flange 14 of the tread member 12 which protects these loops from being caught by the point 41 of the finger 40. The feed dog works in conjunction with the bottom-surface of the tread member 12 which serves as the presser foot. The shank part 42 of the finger 40 is inclined, Fig. 13, so that the loops are inclined and fit snugly together. The fabric formed is shown in Fig. 15.