baber/WOPTO huggingface dataset:
Patent GB-662941-A (GB)
Title: A copy dovetailing machine
IPC: B27F1/12
Filed: 1949-01-25
Abstract: 662,941. Dovetailing. HAVLIK, J. Jan. 25; 1949 [Jan. 27, 1948], No. 2039/49. Class 145 (i) A dovetailing machine having a cutter for cutting recesses between two male dovetails; a single template for controlling the movements of the cutter; and a copying body co-operating with the template mounted on a single control lever which operates both feeding and spacing movements of the cutter, the movements being mutually at right angles and the resultant thereof tracing out the contour of the finished dovetails; has a copying body of continuously increasing diameter and adjustable relatively to the template to vary the size of the dovetails; and a dividing apparatus adapted to produce spacing movement of the cutter in either direction. The control lever 6 carries copying body 5 engaging movable template 1, the control lever being pivoted at 7 on a rotatable, but not slidable, spindle 8, from which the cutter-feeding action is obtained, and connected at 10 to a quadrant 9 for vertical sliding motion, so that spindle 12 is reciprocated and provides the spacing movement of the cutter. The reciprocating movement of spindle 12 is communicated to a dividing apparatus (Fig. 4); the spindle 13 and fixed inclined surfaces 24 forming a wedging space into which rolling bodies 23 are driven by springs 25 such that movement of the spindle 13 towards the narrow end of the space jams rolling bodies 23. As two opposed wedging spaces are provided, movement in either direction of spindle 13 moves body 20 secured to the tool carriage. The plunger 33 may be positioned by lever 22 to relieve the spring pressure on either one of the two rolling bodies 23 so that that rolling body becomes inoperative as a wedge and therefore body 20 moves in one direction only, determined by lever 22; the cutter is spaced along the work for each successive dovetail. When the cutter reaches the limit of its spacing movement in one direction, by operating lever 22 to relieve the other rolling body, the next work can commence from this limit, thus avoiding time-loss due to returning the cutter to its initial position. Specification 644,294 is referred to.
Patent GB-895890-A (GB)
Title: Means for forming bundles of bristles, hair and other fibre material
IPC: A46D3/08
Filed: 1961-01-18
Abstract: 895,890. Brush-making apparatus. BAER, J. [trading as BAER MASCHINENFABRIK, J.]. Jan. 18, 1961 [July 8, 1960], No. 2060/61. Class 19. Means for forming bundles of bristle and other fibrous material comprises a divider 2 moved transversely of the direction of advance of the bristle stack with a dividing opening 3 for the reception of the bristle, and drive means 8 for the divider so constructed that a swinging movement is imparted thereto during the reception of the bundle. As shown, the bristles are stacked perpendicularly in a channel 1 and are forced by means of a support 20, acted on by a spring via a chain 21, into the dividing opening 3. The latter is adjustable by means of the slides 4, 5, 6. The dividing disc 2 is driven by a cam 8 via a crank 23 and levers 9, 10. The cam is so designed that in the region I the opening 3 is filled with bristles. On further rotation of the cam 8 now in the regions II, III, IV swinging movements of the divider 2 are effected. In the region V the control cam drops steeply away to the minimum diameter so that the divider is pivoted by the action of a spring 13 so that the opening 3 is in the position 3<SP>1</SP>: The opening 3 is covered when swinging out by a stripper bar 16, loaded by springs 17, and when in the end position 3<SP>1</SP> it comes beneath a spring loaded cover stirrup 18, pivoted at 19, so the bundle can expand and be taken out easily for further handling. The stroke of the divider is adjusted by altering the eccentricity of the crank 23 according to the size of the opening 3. Electrically, hydraulically or pneumatically-acting concontrol means may be introduced into the mechanism for the drive of the dividers and are adjustable as regards amplititude and possibly frequency.
Patent GB-816224-A (GB)
Title: Preparation of vitamin a esters
Filed: 1956-01-23
Abstract: Higher fatty acid esters of Vitamin A are obtained by esterifying Vitamin A with a higher fatty acid ester of a lower alkyl monohydric alcohol in the presence of a basic alcoholysis catalyst.  As higher fatty acid esters of lower alkyl monohydric alcohols there may be used methyl palmitate, ethyl palmitate, butyl stearate, methyl oleate, propyl linoleate, methyl myristate and methyl laurate.  As basic alcoholysis catalysts there may be used sodium methoxide, potassium ethoxide, lithium isopropoxide, calcium methoxide, barium isopropoxide, sodium hydride, potassium amide, sodium palmitate, lithium palmitate and barium hydroxide. The temperature of reaction is varied according to the catalyst employed.  Sodium methoxide may be employed at about 0.2-0.5 per cent by weight of the reaction composition.  The reaction is effected in an inert solvent, e.g. xylene, benzene, petroleum ether, and diethyl ether.  An example describes the preparation of Vitamin A palmitate.
Patent GB-1088663-A (GB)
Title: Improvements relating to cooking stoves
Inventor: BRANDON GEOFFREY EDWARD
IPC: A47J39/00
Filed: 1964-01-17
Abstract: 1,088,663. Oven stoves. SIMPLEX ELECTRIC CO. Ltd. April 15, 1965 [Jan. 17, 1964], No. 2149/64. Heading F4W. A cooking stove incorporating an oven chamber, 12 heated by electrical elements 10 in walls 11ais cleaned by air heated to 400- 450‹ C. in a system comprising a pipe 17 beneath a bottom oven plate 27 bifurcated at 25 to give two limbs containing electrical elements 26, said air passing through inlets 18 at the base of the oven between screens 13 and heaters 10 to burn off grease on internal oven surfaces. A plate 20 protects inlet 19 to pipe 17 from ingress of grease, while an impeller 21 driven by a motor 22 circulates the air in the direction shown by the arrows. A filter 23 in pipe 17 traps solid products of combustion and may act as a heatexchanger to cool the air before it impinges on the impeller blades, while a separate heatexchanger 24 is also provided for the same purpose. A lock 37 incorporates a temperaturesensitive element (not shown) and/or a time delay mechanism to prevent the oven door 28 being opened while the air inside the oven is at a high temperature, a vent 29 in top wall 15 of the oven being closed by an electric switch 32 incorporating a mechanical interlock. Further, a switch 36 is provided to ensure that heaters 26 may only be switched on, when the oven door 28 is closed. During the cleaning operation, a bleed of cool air may be directed from the impeller over the outer cooker panels to maintain them at a low temperature.
Patent GB-394905-A (GB)
Title: Mount for pictures, photographs and the like
IPC: A47G1/06
Filed: 1933-01-23
Abstract: 394,905. Picture &c. mounts. KOSTER, F., 102, Schweizerstrasse, Frankfort-on-Main, Germany. Jan. 23, 1933, Nos. 2174 and 2175. Convention dates, Sept. 27 and Dec. 1, 1932. [Class 11.] In mounting pictures, photographs, &c. between two sheets the inner surfaces of the sheets are coated with a dry adhesive substance, such as pure crepe or para rubber dissolved ir benzine, which will not adhere to the picture &c. but only to a similarly coated surface. The two sheets 1, 2 of the mount are connected by a fold 3, and have a viewing aperture 4. When the picture is placed in position, and the two sheets pressed together they stick to each other and embrace the picture closely, but the picture itself is loose and protected from the distorting or discolouring effect of the adhesive. The picture may be additionally protected by a layer such as a waxed sheet. By the provision of an aperture in each sheet, of two apertures in one sheet, or of two in each sheet, the mount may be adapted for transparencies or diapositives or for stereoscopic opaque or transparent pictures respectively. The mounts may bear suitable embossings, decorations, and inscriptions, and may be separate sheets.
Patent GB-913392-A (GB)
Title: Electric circuit breaker
IPC: H01H71/74
Filed: 1961-01-19
Abstract: 913,392. Automatic circuit-breakers. WESTINGHOUSE ELECTRIC CORPORATION. Jan. 19, 1961 [March 2, 1960], No. 2216/61. Class 38 (5). The trip device of a multi - pole circuit-breaker is mounted in a moulded insulating enclosure comprising a base and cover, each having integral projecting partitions having their edges shaped and arranged to co-operate so as to form a partition wall and seal off the areas on opposite sides of the wall. As shown in Fig. 1, a moulded case circuit-breaker has contacts 21, 23 connected between terminals 15, 17, a toggle linkage 57, 59 operable by a handle 71 and releasable by a cradle 63 normally held by the tripping mechanism and a tie-bar 37 which supports the moving contact arms 35 of all three phases. The trip device 29 is enclosed in the base 81 and cover 89 through which the phase conductors 41 pass as shown in Fig. 4. The base 81 (Fig. 6), has partitions 203 having edges with three faces 215, 216, 217 which mate with faces 225, 226, 227 of the partition 219 of the cover 89 (Fig. 9), to divide the enclosure into three phase compartments. The base 81 has openings 197, 199 for the latch 117 which normally holds the cradle 63 and for two arm members 201 in which pivot-pins in the trip bar 107 engage. The bar 107 extends through openings formed by corresponding semi-circular recesses in the partitions 203, 219 and flanges 228 on the bar 107 close the openings. Armatures 133 can be adjusted by rotation of a member 157 to move a cam 155 which acts on a follower 147 controlling the air gap between the armature 133 and core 129. A screw connection between the parts 171, 173 of the follower 147 allows for adjustment during assembly and it may be cemented after adjustment. Gaps 206 in the partitions allow access to armature biasing springs 140 during assembly and are closed by insulating plates 229.
Patent GB-819382-A (GB)
Title: Reciprocated water paddle
IPC: B63H16/04
Filed: 1957-01-22
Abstract: 819,382. Propelling by reciprocating devices. BEMROSE, H. S. Jan. 21, 1958 [Jan. 22, 1957], No. 2244/57. Class 114. A water propelling device comprises a flexible, concave, collapsible envelope 11 secured at its apex to an elongate member 10 so that said member projects from the apex side of the envelope. Internally the envelope is provided with flexible but inextensible ribs, 12-16.
Patent GB-509904-A (GB)
Title: Improvements in or relating to temperature-responsive actuating elements
IPC: G05D23/12
Filed: 1938-01-24
Abstract: 509,904. Temperature-responsive actuating-elements; switches. JAEGERAVIATION. Jan. 24, 1938, No. 2290. Convention date, Feb. 3, 1937. [Class 64 (ii)] [Also in Group XXXVII] A container 8 is divided by a diaphragm 10 into two chambers, 9 containing a gas or non- saturated vapour, and 9<1> containing a saturated vapour derived from a transformer oil which covers contact studs 3, 4. The diaphragm 10 carries a resilient blade 1, connected to a terminal 2, which makes contact with either 3 or 4, depending on the differential pressure of the two fluids when subjected to the same temperature. In a modification, Fig. 2, the diaphragm is replaced by a bellows 10, which carries a contact arm 15 moving over a series of contact studs 17, placed in one of the chambers 20, in an atmosphere of carbon dioxide under pressure to protect the contacts. The other chamber 9 may then contain sulphuric ether.
Patent GB-647873-A (GB)
Title: Improvements in or relating to mining machines
IPC: E21C27/02
Filed: 1949-01-28
Abstract: 647,873. Mining-machines. ANDERSON, A., and ANDERSON; BOYES-& CO., Ltd. Jan. 28, 1949, No. 2399. [Class 68 (i)] A longwall mining-machine comprises a main unit 10 consisting of a haulage unit 19, motor unit 16 and a gear head 20 on which is mounted a main rotary cutting wheel 11 and articulated either to the rear of the gear head or to the motor unit is a loader unit 12 incorporating a transversely operating conveyer 13 and a supplementary rotary cutting wheel 14 which is vertically adjustable with respect to the conveyer. The drive to the conveyer and the cutting wheel 14 may be from a motor 17 on the loader unit or alternatively from a motor mounted on the main unit either above or alongside the motor 16. Ploughs 24 or reciprocatory cutter means are mounted behind the main cutter wheel 11 to remove upstanding ridges left on the floor. Suitable guide means direct the cut mineral onto the conveyer which can be transversely extended as desired. Specification 647,870 is referred to.
Patent GB-1302417-A (GB)
IPC: B01J8/18
Filed: 1970-01-19
Abstract: 1302417 Treating granular materials KLOCKNER-HUMBOLDT-DEUTZ AG 19 Jan 1970 [18 Jan 1969] 2529/70 Heading F4B Fine granular material, such as lime, dolomite or magnesite, after treatment in a treatment chamber 1 with gases from a hot gas generator 9, is carried out with the gases to a cyclone separator 10. Material from separator 10 then passes through a single or multi stage cyclone cooler 18-16 in countercurrent to a stream of air part of which is then supplied by blower 21 to the hot gas generator 9 through line 23 to form a primary combustion air supply. The gases from separator 10 pass in countercurrent to the incoming material through a single or multi stage preheater 11-13 of the cyclone type. At least part of the gases from the preheater outlet are recycled by blower 14 to the hot gas generator 9 to be reheated and reused, the remainder if any, passing through dust separator 15 to atmosphere. Some air from blower 21 passes through line 24 to blower inlet 14 to control the temperature of the gas stream passing through it. This air then forms a secondary combustion air supply to the hot gas generator. Also some treatment gas may by-pass the recirculation line through the blower 14 by passing through a line (not shown) from the outlet of a cyclone, e.g. 12 directly into the line 5 or the hot gas generator 9.
Patent GB-175516-A (GB)
Title: White metal alloy
IPC: C22C9/04
Filed: 1921-01-16
Abstract: 175,516. Dunkley, J., and Ryan, E. J. Jan. 16, 1921. Alloys.-A white-metal alloy is made by alloying 24¥ parts of copper, 14“ parts of zinc. 9“ parts of nickel, 2 parts of lead, part of phosphor copper, and # part of aluminium with the aid of a flux of broken glass and charcoal.
Patent GB-336901-A (GB)
IPC: H01F27/42
Filed: 1930-01-24
Abstract: 336,901. International General Electric Co., Inc., (Assignees of Allgemeine Elektricilõts-Ges.). Jan. 25, 1929 , [Convention date]. Additon to 336,817. Transformers; phase, changing. - In a high voltage instrument transformer as described in the parent Specification, a resistance R is connected in parallel with a part J1 of the high voltage winding a in order to compensate for the lead of the secondary voltage due to high copper losses in the primary .winding. The resistance is connected in parallel with that part of the winding a which is adjacent to the secondary winding b.
Patent GB-113013-A (GB)
Title: Improvements in Walking Sticks, Crutches and the like.
Inventor: ADAMS ALFRED CHARLES
IPC: A45B3/00
Filed: 1917-02-22
Abstract: 113,013. Adams, A. C. Feb. 22, 1917. Limbs, artificial. - Consists of a walking-stick pivotally connecting to the wrist-plate or other part of an arm in such a manner that its lower end is automatically moved in a forward direction when the weight of the body is removed, the arrangement being of use for persons with an injured or an artificial leg as well as an artificial arm. In one construction, a rod c is centrally fixed in a stick a and is pivoted at d to a part c attached to the wrist-plate h by screwing or by a bayonet catch or the like. A part, j extending from the part c carries a rcd l, preferably pivoted, extending through a slot m in the handle b of the stick and fitted with a spring n. When the weight of the body is removed from the stick, this spring automatically moves forward the lower end of the stick. It may be adjusted by a nut o, and the pivot joint d may have stop surfaces i. In a modification, a spring located partly in a recess in the handle may bear directly on a part similar to the part j but inclined rearwardly. In a further modification. Fig. 7, a stick without a handle is pivoted at s in a forked member e fitted with a spring plunger u which engages a recess t, but is adapted to ride on a convex surface w to tilt the stick, the movement being limited by stops x.
Patent GB-624857-A (GB)
Title: Improvements in vibratory appliances
IPC: B65G27/00
Filed: 1946-01-28
Abstract: 624,857. Resilient mountings; springs. BLANPAIN, L. Jan. 28, 1946, No. 2671. Convention date, Jan. 27, 1945. [Class 108 (iii)] An elastic suspension for vibratory apparatus comprises a frame mounted in an angularly-adjustable manner with respect to the framework of the apparatus, and a plurality of springs secured between the frame and a bearing member for an axle of the suspended part of the apparatus. In the construction shown in Fig. 1, the shaft 1 of a vibrating crible, conveyer, table &c. is carried by a collar 7 suspended by spring units 6 from a ring 5 secured for angular adjustment by bolt and slot means 8 relative to an outer ring 3 carried by the rigid base frame 4. Adjustment of vibrational behaviour of the shaft 1 may be effected by adjustment of the ring 5 arid/or compression or tension of the spring units 6. The gravitational load is carried by a compression spring 10 as shown, or alternatively (Fig. 3, not shown), by a cable connected via a pulley and tension spring with a weight. The spring unit 6 may comprise a tension spring, or as shown in Fig. 6, a compression spring 6 mounted in a tube 22 between a threaded adjustment nut 25 and a loose washer 29 bearing on a shoulder formed by an end sleeve 23 of the tube 22. The connection 26 with the collar 7 comprises a head 27 separated from the washer 29 by a resilient washer 60. Adjustment of the unit 6 may also be effected by the insertion of pins (Fig. 5, not shown), through respective pairs of a series of holes in the casing 22 so that the pins replace the abutment 25. In a second construction (Fig. 7), the ring 5 of Fig. 1 is replaced by a frame 30 carried by a plate 32 adjustably mounted by pins 34 on a plate 33. The shaft 1 is supported by vertical compression springs 6 supplemented by horizontal tension springs 6a. Shocks may be imparted to the shaft 1 by a pair of hammers (Fig. 9, not shown), which are mounted on a bracket carried by a pin.which is coaxial with the spring 10 and is rigid with the collar 7. The hammers are arranged so that during vibration of the apparatus, they strike a part of the fixed framework. Leather or rubber washers are interposed between the hammers and the bracket and between the bracket and its carrying pin. The invention is described as applied to the mounting of a vibrating crible (Fig. 13, not shown), which is supported by forward and rearward pairs of legs, the inclination of the crible being adjustable by means of bolt connections between the lower end of the forward legs and the machine frame.
Patent GB-582726-A (GB)
Title: Improvements in or relating to protecting devices for electric circuits and apparatus
IPC: H01H85/055
Filed: 1944-02-14
Abstract: 582,726. Fusible cut-outs. HOPE, V. Feb. 14, 1944, No. 2676. [Class 38 (i)] A cut-out protective against the cumulative effect of repeated or sustained overloads or shortcircuits comprises a capsule 11 in series with copper or silver strips 12 necked at 10 to fuse on heavy overloads and short-circuits. The capsule is made of a relatively large mass of metal having a low melting-point between 100‹C. and 150‹C, and is adapted to fuse by the cumulative action of the heat developed within it and the parts 10. A varnished tube 14 with vents 15 encases the capsule and the entire cut-out is embedded in a powder-filled casing 16 having end-caps 17. Specifications 411,861 and 572,342 are referred to.
Patent GB-660258-A (GB)
Title: Improvements in and relating to electrode structures for high pressure electric discharge devices
IPC: H01J61/073
Filed: 1948-01-29
Abstract: 660,258. Electric discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 29, 1948 [Jan. 29, 1947], No. 2704/48. Addition to 645,122. Class 39 (i). The main electrodes 3 of a high-pressure discharge device, e.g. a mercuryvapour lamp, are of refractory metal, such as tantalum, and comprise a disc portion 21 provided on one surface with one or more ridges 22, for the purpose of increasing the electron - emitting surface without substantially increasing the depth of the electrode. As shown, the ridges are formed by a spiral of the refractory metal, but in modifications, Figs. 4-9 (not shown), they may comprise one or a number of concentric cylinders, formed either by ribbons or by one or more nested cup-shaped members secured on the disc 21. The latter is secured to the lead-in wire 10 by a wire 26 welded to a metal disc 23 which is separated from disc 21 by a metal ring 24 and a refractory wire 25. Details of the sizes of the ridges are given. The lamp envelope contains a starting electrode and a starting gas, e.g. argon, krypton or xenon at a pressure of e.g. 17 mm. of mercury. The envelope also contains an ionizable working substance, e.g. mercury, the lamp being arranged to operate in the pressure range of from“ to 2 atmospheres. The ridges are also stated to aid thermal conduction in the electrodes and so avoid "hot-spotting" and possible disintegration thereof.
Patent GB-158509-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J17/24
Filed: 1921-01-20
Abstract: 158,509. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Jan. 22, 1920, [Convention date]. Vacuum tubes.-Traces of gases, other than hydrogen, are removed from rare gas in a discharge tube by introducing phosphorus into the tube, for instance, by subliming red phosphorus. Specification 153,331 is referred to.
Patent GB-904153-A (GB)
Title: Improvements in or relating to electrical apparatus including screened electrical coils
IPC: H01F27/36
Filed: 1960-01-25
Abstract: 904,153. Screening circuit assemblies. GENERAL ELECTRIC CO. Ltd., BROWN, R. G., and WILKINS, K. E. Jan. 25, 1961 [Jan. 25, 1960], No. 2724/60. Class 37 [Also in Group XL (c)] A turret tuner for a radio receiver comprising a plurality of coils mounted to be brought selectively and one at a time into an operative position in which electrical connection is made to the selected coil, comprises a plurality of movable electrical screens lying between adjacent ones of the coils in order to screen the coils from each other and means responsive to the action of bringing any one of the coils into the operative position to cause at least one of the screens screening the selected coil to move away from said coil to increase the volume of the screened enclosure housing said coil and hence the Q-factor of the coil. The turret comprises a plurality of sections arranged sideby-side along a rotatable shaft 4, Fig. 1 (not shown), each section comprising eight coils 2 with a movable electrical screen 13 between each adjacent pair of coils. Each screen is attached to a respective pivoted shaft 14 to which is also secured a respective cam follower 17 spring-urged to rotate in a clockwise direction. These latter co-operate with a fixed cam 20, as shown the cam-follower to the right of the selected coil has rotated clockwise to enter a recess within the cam 20, the corresponding screen 13 rotating with it so the screened enclosure containing the operative coil is larger than any of the others. An indented wheel 24, Fig. 3, as also mounted on the shaft 4 and cooperates with a roller 26 on a spring-loaded lever 25 to locate the eight possible angular positions of the turret.