baber/WOPTO huggingface dataset:
Patent GB-672743-A (GB)
Title: An improved hand truck
IPC: B62B1/26
Filed: 1949-10-31
Abstract: 672,743. Hand trucks. PUIG Y SALSAS, A. Oct. 31, 1949 [Nov. 29, 1948], No. 27826/49. Class 108(i) A hand truck for carboys, bales &c. comprises upright arms 7 having at their upper ends levers 1, 2 pivoted at 3 and biassed by springs 4 to facilitate the hooks 5 engaging the side of the load. To lift the load the truck is moved forwardly until the load contacts the parts 6 to rotate the arms 1, 2 to engage the load.
Patent GB-387423-A (GB)
Title: Improved poultry house
IPC: A01K31/22
Filed: 1931-10-08
Abstract: 387,423. Poultry-houses. REDDAWAY, F. W., Holly Farm, Bressingham, Diss, Norfolk. Oct. 8, 1931, No. 27915. [Class 5 (ii).] A poultry-house comprises two slatted floors 4, 6, the lower 4 of which is above ground level, a ramp 1 whereby poultry may gain access to the floor 4, and an aperture 15 in the door 5 whereby poultry may gain access to the ramp 1, the aperture 15 being at a level below that of the floor 4. The ramp 1, comprising a substantially square, mesh-covered frame, is hinged at 7, 8 to the floor 4 and may occupy the position shown to provide access to the floor 4 whether the door 5 is open or closed, or it may be fastened in the horizontal position by turnbuttons 12, 13, 14 to close the house, or, if desired, it may be turned back to rest on the floor 4. The door 5 may be swung from hinge pinths 9, 10 on either side of the doorway. The ramp 1 may be slidable in grooves in the floor 4, instead of being hinged thereto. Nest boxes, on the lower floor, and droppings boards may be provided. According to the Provisional Specification, feed troughs are provided at one side of the house.
Patent GB-361481-A (GB)
Title: Improvements in fuel cut-off valves
IPC: F16K17/38
Filed: 1930-09-18
Abstract: 361,481. Thermally-actuated valves. LOVEKIN, L. D., Montgomery Avenue, Villanova, and FISCHER, W. F., 501, Mt. Pleasant Avenue, Mount Airy Station, Philadelphia, both in Pennsylvania, U.S.A. Sept. 18, 1930, No. 27918. [Class 135.] A fuel cut-off valve adapted on abnormal rise of temperature to cut off the fuel supply to a heater has the valve member 20 normally held open against the action of a spring 21, by a fusible member 14 mounted in a carrier 13 housed in a well 18 in an externally threaded support 6 on the casing 9. The carrier 13 which in the form shown has a slight external taper has an internal shoulder 32 on which the disc 14 is clamped by a screwed ring 15 which also acts as a guide for the valve spindle. The ring 15 has a screwed extension 17 to receive a removing tool and is formed with radial slots 15<1>. The loading spring is housed in a chamber formed by an upstanding flange 25 on the valve member sliding in a cylinder formed in removable cover 23. The valve member is held against a shoulder 27 on the spindle by a nut screwed on to an enlargement of the upper part of the spindle and is secured by a split pin 30. In a modification the valve member and spindle are formed integrally and the fusible member is shaped as an inverted cup.
Patent GB-929543-A (GB)
Title: Control of induction motors
Inventor: CLAPHAM HAROLD EDWARD CAMERON
IPC: H02K17/40
Filed: 1959-08-14
Abstract: 929,543. Control of motors. BRUCE PEEBLES & CO. Ltd. Aug. 11, 1960 [Aug. 14, 1959], No. 27941/59. Class 38 (3). The rotor winding of an induction motor 1 is connected through rectifiers 4 to the armature 2 of a D.C. machine, which is coupled to the induction motor, and whose field (and hence the back e.m.f.) may be reduced to zero and then reversed. By this means the resultant voltage at the D.C. side of the rectifiers may be brought to zero, enabling the induction motor to reach a speed close to that obtained if the rotor windings, were short-circuited. The field may comprise a separately excited main winding 5 with or without an opposing bias winding 6, and with or without an opposing series bias winding 7. When bias windings are used reversal of the resultant field is attained without switching, by reducing the current in main field 5 to zero. Reference has been directed by the Comptroller to Specifications 868,763 and 875,379.
Patent GB-1011573-A (GB)
Title: Process for the manufacture of 19-nor-steroids
IPC: C07J75/00
Filed: 1963-07-16
Abstract: D 5(10) - 6 - Hydroxy - 19 - nor - steroids are prepared by reacting D 5-19-hydroxy-steroids with an oxidizing heavy metal acylate and then hydrolysing the product.  This process may be combined with the further steps of esterifying or etherifying the 6-hydroxy group in the products, or oxidizing it to a 6-keto-group; epoxidizing any of these products to give a 5,10-epoxide in which a 6-hydroxy group may likewise be etherified, esterified or oxidized; or converting resulting D 5(10)-6-oxo-19-nor-steroids by the Wolff-Kishner method into D 5-19-nor-steroids and, if desired, after the formation of a free 3-hydroxy group, isomerizing these to D 4-3-oxo-19-nor-steroids. Preferred oxidizing acylates are those of tetravalent lead, although silver and mercury acylates are also referred to, used, if desired, in the presence of an acid acceptor.  Free 3-keto groups may be formed from 3-free hydroxyl groups or esters thereof or from 3-ketals.  17- and 20-ketal groups may be hydrolysed also.  The starting materials may be of the androstane, pregnane, cholane, cholestane, spirostane or cardanolide series and may contain in one or more of positions 2, 3, 4, 7, 11, 12, 14, 15, 16, 17, 20 and 21 alkyl or alkenyl groups, halogen atoms, esterified or etherified hydroxyl groups and free, ketalized or enolized oxo groups.  They may also contain one or more double bonds and/or oxido groups. Examples describe the above processes.  The following processes are also referred to: D 5-19-nor-steroids can be epoxidized to 5a ,6a -epoxides, these with Grignard compounds or hydrohalic acids give 6b -substituted - 5a  - hydroxy-steroids, these after formation of a 3-oxo group can be dehydrated to D 4 - 3 - oxo - 6b  - alkyl or -halo-19-nor-steroids, and these can be isomerized to the 6a -compounds; and 6-hydroxy or -acyloxy products can be converted to D 5(10),6 -19-nor-steroids.  D 5 - 3,17 - bisethylenedioxy - 19 - hydroxy-androstene is prepared by acetylating D 4-3,17-dioxa 19 - hydroxy - androstene to D 4 - 3,17-dioxo - 19 - acetoxy - androstene, ketalizing this and hydrolysing the product.  These processes are also referred to in more general terms.  Specifications 994,746, 994,747, 994,748, 994,749 and 1,007,757 are referred to.
Patent GB-931571-A (GB)
Title: New disubstituted tetrahydro-oxazinones and a process for the production thereof
IPC: C07D/
Filed: 1961-08-03
Abstract: The invention comprises 5,51-disubstituted tetrahydro-1,3-oxazin-(2)-ones of the general formula <FORM:0931571/IV(a)/1> where R1 and R2 are alkyl, aralkyl or aryl and R3 is hydrogen, alkyl, aralkyl or aryl, and the preparation thereof by condensing amino-alcohols of the general formula <FORM:0931571/IV(a)/2> with diethyl carbonate in the presence of an alkaline catalyst and distilling off the ethyl alcohol formed; the products are recovered by vacuum distillation.  Examples describe the preparation of the compounds wherein R1, R2 and R3 have the values:-(1) ethyl; ethyl; hydrogen: (2) ethyl; propyl; hydrogen: (3) ethyl; allyl; hydrogen: (4) ethyl; butyl; hydrogen: (5) ethyl; benzyl; hydrogen: (6) ethyl; phenyl; hydrogen: (7) ethyl; ethyl; ethyl.  The catalyst used is sodium methoxide; sodium carbonate can also be used.
Patent GB-654912-A (GB)
Title: Work support for metal cutting machine tools
IPC: B23F23/02
Filed: 1948-11-03
Abstract: 654,912. Lathe &c. drivers; steady rests; tailstocks. FELLOWS GEAR SHAPER CO. Nov. 3, 1948, No. 28537. Convention date, Nov. 20, 1947. [Class 83 (iii)] Gear-cutting.-In a machine tool, e.g. a planatary gear-shaping machine, comprising a cutting tool C and rotatable work spindles P, each workpiece W is centred by means of rollers 32, 33 and is pressed axially towards a work spindle by means of a displaceable bell crank lever 40, 41. The lever is pivoted to a bracket 42 secured to the hub 26 of a worm wheel 25, and the arm 41 which carries workengaging rollers 44 is pressed to engage the end of a workpiece by means of a spring 45 while the arm 40 is controlled by means of a cam 47 secured to the framework of the machine. The rollers 32 are mounted on a bracket 30, secured to the hub 26, provided with a notch 31, Fig. 4, and the roller 33 is carried by a spring- actuated lever 34 pivoted to the bracket so as to be shiftable between a work-engaging position and an inoperative position, the lever 34 having a second arm 34a which extends across the notch 31 in the inoperative position of the lever. Each workpiece is rotated by means of a driving stud 14, Fig. 6, carried by an adapter 13 secured to the work spindle, engaging a stud 16 provided on a dog 15 secured to the workpiece, the stud 16 being retained in engagement with the stud 14 by means of a roller 23 mounted on a spring- influenced lever 21 pivoted to the adapter 13. The latter carries a centre 12 for engaging the lower end of the workpiece. The cutting tool is reciprocated and is also oscillated when helical teeth are to be cut. The worm-wheel 25 is coaxial with a rotatable table T carrying the work spindles, and the table and worm. wheel are rotated in unison by means of a train of gearing and shafting. A finished workpiece is removed from the machine and a blank substituted therefor while a work spindle is beside the toothless gap C of the cutter. In this position, the lever 40, 41 is retracted by the cam 47 and the workpiece removed by turning it to clear the stud 16 from the retaining roller 23, displacing its upper end outwardly clear of the bracket 30 and lifting it from the centre 12. In a modification, the workpieces may be stationary in the sense of having no planetary movement and the cam 47 movable. Specification 636,995, [Group XXV], is referred to.
Patent GB-967745-A (GB)
Title: Improvements in or relating to tubes
IPC: E04C2/40
Filed: 1961-08-08
Abstract: 967,745. Making non-circular tubes; fenceposts; doors C. MALKMUS-DORNEMANN. Aug. 8, 1961, No. 28551/61. Heading B3A. [Also in Divisions E1 and F2] A tube 1 of triangular cross-section is formed by bending a sheet and bringing two opposite edges 2, 3 together which are bent outwards and one edge 12, Fig. 3, is bent over the other or the edges are joined by a flat or an angled channel strip 4, Fig. 1. The tube may be reinforced at the joining edges or the corners 15, 16, Fig. 3, by longitudinal bends. Reinforcing wires may be secured in the corners 12, 15 of the tube or the channel strip by bending the metal round them or by triangular plates transverse to the tube. The sides of the tube may be ribbed. The tubes may be grouped with their flat faces engaged to form structural elements. The tubes may also be used as fence posts, door posts end door frames, Figs. 7, 9.
Patent GB-1354856-A (GB)
Title: Click pawl device
IPC: A01K89/016
Filed: 1972-06-19
Abstract: 1354856 Click pawl devices ETABS CARPANO & PONS SA 19 June 1972 [30 June 1971] 28579/72 Heading A1A [Also in Division F2] A click pawl device which may be included in a fishing reel comprises a rotatable toothed wheel 1 and a substantially triangular click pawl 3, one of whose apices 6 is urged into contact with the wheel's teeth by a spring 7 whose two ends 8 and 9 are held in selectable positions about an arc concentric to the wheel's axis, whereby the braking effect and noise prodced by the click pawl can be adjusted. In one embodiment the spring's ends are retained either in the same notch or different notches on an arcuate member 10 which is integral with a fishing reel's frame so that by varying the respective positions of the ends 8 and 9 along this member, the biasing force of the spring 7 and the amount by which the pawl 3 has to be displaced before disengaging from the wheel's teeth is altered. If the two ends are both engaged in the end notches on the member 10 the pawl 3 is urged out of contact with the toothed wheel 1 to allow free running. The click pawl device may be two-way or unidirectional with respect to rotation, and in alternative embodiments the member 10 may be independent of, or detachably mounted on the reel's frame and the two ends of the spring engage an element which is moved over the arcuate path by a member passing through the reel's casing for manipulation by an angler.
Patent GB-1416356-A (GB)
Title: Electrical choke and means and method for manufacturing same
IPC: H01F27/26
Filed: 1973-06-15
Abstract: 1416356 Inductors HELVAR OY 15 June 1973 [15 June 1972] 28593/73 Heading HIT [Also in Division B3] A choke comprises at least two plate stacks 1À1, 1À2, surrounded by a sheet metal case comprising at least two component parts 2, 3. A first component part, 2 has upstanding sides with turned-in lips 2À2 which are folded over bent-up lips 3À1 of the second component part 3, so as to press together the plate stacks 1À1, 1À2 with a predetermined force for the prevention of mains hum in the plate stacks. The case component 2 further has punchedout tongues 2À1 for bending towards the plate stacks 1À1, 1À2 so as to press together the plates of each stack with a predetermined force. Preferably the plate stacks 1À1, 1À2, comprise E-plates and I-plates; and an air gap, with or without a filling of hard insulating compound may be provided in the middle leg. Cores made from two E-shaped stacks are also envisaged. A method of making a choke comprises placing the loosely-assembled plate stacks and case components in a recess 4À1 of a base 4, and bringing down a plunger tool 5 shaped at 5À1 for folding the lips 2À2 over the lips 3À1. The channel defined in the case 3 by the lips 3À1 may be used as a wiring conduit. Alternatively the edges of one of the stacks may be bevelled (Fig. 3, not shown) and the case component (3a) correspondingly shaped so that the lips (2À1, 3À1) lie within the rectangular outline of the choke.
Patent GB-1199274-A (GB)
Title: Improvements in and relating to articulated tipping lorries
Inventor: NEVILLE GEORGE EDGAR
IPC: B60P1/28
Filed: 1967-06-21
Abstract: 1,199,274. Tipping vehicles. G. E. NEVILLE. 12 Sept., 1968 [21 June, 1967], No. 28621/67. Heading B7B. A tipping semi-trailer is mounted on twin rear axles and the tipping axis for the body is midway between the axles and below them, the said tipping axis being formed by the pivoting axis of two parallel rocking beams which carry the twin rear axles.
Patent GB-634537-A (GB)
Title: Improvements in and relating to wire shaving finishing machines
IPC: B21C43/02
Filed: 1947-10-27
Abstract: 634,537. Drawing wire ; broaching. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 27, 1947, No. 28641. Convention date, Feb. 16, 1939. [Classes 83 (iii) and 83 (iv)] A wire shaving device comprises a cutting die 40 and a guide die 31 arranged in advance of and independent of the cutting die and the member directly supporting the cutting die so as to provide a space between the two adjacent surfaces of the dies sufficient only to permit free egress of the shavings. A cradle 10 horizontally and vertically rotatable carries a drawing die 25, the guide die 31, cutting die 40, and a final drawing die 50. The die 25 and its support are pivoted about a pin 29 to permit withdrawal of the guide die 31, which is mounted in intermediate collars so as to be laterally adjustable to permit of lining up with the die 40. Lubrication containers 49, 54 and 55 are provided. The cutting die 40 has tapered inner and outer surfaces which form a cutting edge 42<SP>1</SP>, and auxiliary radial cutting edges 431 which shred the shavings are provided by grinding flat or slightly concave surfaces 43 on the conical outer surface of the die. The invention is stated to be applicable to the drawing of bars or wires of rectangular or other cross sections.
Patent GB-902131-A (GB)
Title: Improvements in mechanism for the control of strip materials
Inventor: LONG JOHN JAMES
IPC: B21B41/12
Filed: 1959-08-21
Abstract: 902,131. Automatic tension control systems. SANDERS (ELECTRONICS) Ltd., W. H. Aug. 15, 1960 [Aug. 21, 1959], No. 28707/59. Addition to 815,648. Drawings to Specification. Class 38 (4). In an automatic tension-control system of the kind disclosed in the parent Specification, wherein the speed of movement and position of the bottom of a loop is sensed by a photoelectric device, a reference photo-electric device is mounted adjacent to the sensing photo-electric device so as to receive a constant amount of light and the loop is controlled by a signal representative of the difference between the output signals of the photo-electric devices.
Patent GB-499991-A (GB)
Title: Improvements relating to machinery guards for preventing injury to operators
IPC: F16P3/00
Filed: 1937-10-21
Abstract: 499,991. Machinery guards. LANG, E. A. R. Oct. 21, 1937, No. 28747. [Class 80 (iv)] In guards for platen punching machines having an adjustable plate moved with the tool for part of the stroke, chain and sprocket mechanism is provided to impart to the platen any adjustment of the plate. A circular platen 4 is carried by a screw-threaded stein 3 taking into a piston 2. A circular plate 10 is movable vertically on spring-controlled rods 7 slidable in guides 5B secured to the cylinder 1. Upward movement of the plate is limited by stops 6. A sprocket 18 is formed on a boss 16 secured by set screws at the foot of the stem 3, and is engaged by a chain 19 passing round sprockets 20 on the rods 7. When a rod 7 is rotated by means of a hand wheel 8A the chain is actuated and both rods rotate to adjust the position of the stops 6 which are threaded on the rods. The sprocket 18 is also rotated to adjust the vertical position of the platen 4 on the stem 3, the various gears being related so that the adjustments are of equal height.
Patent GB-379135-A (GB)
Title: Improvements in or relating to bodies for motor vehicles
IPC: B60J3/00
Filed: 1931-10-16
Abstract: 379,135. Antidazzle devices for vehicles; vehicle ventilators. BISHOP, W. H., 48, Moor Street, Birmingham. Oct. 16, 1931, No. 28752. [Class 103 (ii).] In road vehicles a shell or cover for an opening in the curved edge of the roof conforming when closed to the normal contour of the roof edge and capable of being moved to uncover the opening serves as a sun visor and ventilator when situated at the front above the windscreen and as a ventilator only when situated at a part other than the front. In one form the cover a is carried by two pairs of links c, e and as shown in Fig. 3 the rear end may be raised to serve as a ventilator or the whole cover a may be swung forwardly to act as a sun visor and. as a ventilator as shown in Fig. 1. The roof may have a fixed or a sliding panel and means may be provided for rendering weathertight the junction between the roof and the rear end of the cover. In the case of ventilators only the cover may be arranged to slide or be moved either vertically or horizontally to uncover the opening as shown in Figs. 12 and 15, or the cover may be hinged at its front end. A control device, Fig. 9, may be provided. An arm. o pivoted at p to the cover in alignment with the pivots of links e is pivoted at n to a split bracket l by means of which it may be locked, a rod q is provided for manipulating purposes.
Patent GB-481037-A (GB)
Title: Improvements in or relating to vacuum filters
IPC: B01D33/00
Filed: 1936-10-23
Abstract: 481,037. Filters. ASANO CEMENT KABUSHIKI KAISHA. Oct. 23, 1936, No. 28891. Convention date, April 28. [Class 46] A rotary drum vacuum filter is provided with a vibratory member which co-operates with a part of the drum or with the layer of filtered material on the periphery of the drum in order to impart a vibratory movement to said layer. Fig. 2 shows a vibrator 6 in contact with the flange 11 of a drum filter while Fig. 3 shows a mechanically operated hammer 8 which strikes the flange 11. Fig. 4 shows a modification in which the slurry layer is struck by a hammer 9 which may be operated continuously by pneumatic means.
Patent GB-457850-A (GB)
Title: Improvements in or relating to gear changing mechanism
IPC: F16H63/02
Filed: 1935-04-30
Abstract: 457,850. Controlling change - speed gearing. CONSTANTINESCO, G., Oxen House, Torver, Coniston, Lancashire. April 30, 1935, No. 28906/36. Divided out of 457,761. [Class 80 (ii)] An electrically-controlled dog 78, Fig. 1, prevents the completion of the stroke of a gearchanging lever 100 until the gear or clutch teeth to be engaged are in synchronism. A synchronizer 77, which is as described in Specification 457,761 or 457,849 provides an electric current in a different circuit for each speed whenever a pair of gears in, say, the gearbox 101 of a car are in synchronism. The wires of these circuits are brought severally to contact pieces 76, Fig. 2, on a head 75 on the lower part of the lever 100. To bring in a new speed, an effort is made by hand to move the lever 100 to the corresponding position. This brings one of the contact pieces 76, Fig. 2, against the dog 78, which obstructs the striking movement of the lever 100. Whenever a circuit comprising that engaged contact piece is completed in the synchronizer 77, current flows across the dog 78 and through an electromagnet 80, Fig. 1, to the battery 81. An armature 80<1> is attracted which completes a relay circuit at 83, so that a strong current flows through an electromagnet 79. This pulls down the dog 78 so that the lever 100 is freed from obstruction and continued muscular pressure on the knob causes the striking stroke of the lever to be completed. In a preferred form, the upper part 741 of the lever 100 is springy and works in a gate 84. The upper part 74<1> can be thrust home in the gate leaving the lower rigid part obstructed and kept from following until after synchronization.
Patent GB-512293-A (GB)
Title: Improvements in or relating to apparatus for controlling the revolution of chuck-driving spindle in head-stock for high speed lathe
IPC: B23Q5/20
Filed: 1938-10-06
Abstract: 512,293. Turning. NAGASAWA, K. Oct. 6, 1938, No. 28985. [Class 83 (iii)] In a lathe headstock wherein a conical friction wheel splined on the spindle is engageable either with a stepped cone pulley or a front gear to obtain different sets of speeds, means are provided for locking the front gear against rotation so that rotation of the spindle may be stopped by engaging the friction wheel therewith. In one form a stepped pulley 2 is loosely mounted on the spindle 1 and a double conical friction member 5 is splined thereon and is movable by a hand lever 9 so as to engage either a friction surface 6 on the pulley or a friction surface 6<1> on a loose front gear 3. The gear 3 may be driven from the spindle through the usual back gear shaft 15 or may be held stationary by a pin 10 in the headstock 8 engaging one of a number of recesses 11 therein. With the gear 3 locked, axial displacement of the member 5 will stop rotation of the spindle quickly and smoothly and with the back gear in operation axial movement of the member 5 will give alternative high and low speeds to the spindle. In a modification the gear 14 is keyed to a rotatably mounted shaft 15 and the gear 13 is splined thereon and movable by a hand lever so as either to engage the gear 12 or to engage dogs on a fixed part of the headstock in order to lock the gear 3 against rotation.