Webster & Bennett - Assigned Patents

Manufacturers Index - Webster & Bennett

Webster & Bennett
Coventry, West Midlands, England, U.K.
Manufacturer Class: Metal Working Machinery

Patents

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Patent Number	Date	Title	Name	City	Description
189,519,486	Jul. 25, 1896	Improvements in Apparatus for Milling Profiles	Thomas Webster	, England	This is the equivalent to U. S. Patent #579,355.
		Improvements in Apparatus for Milling Profiles	Jonathan Howarth	, England
579,355	Mar. 23, 1897	Milling-machine	Jonathan Howarth	, England	This is the USA equivalent of British patent 189,519,486.
		Milling-machine	Thomas Webster	, England
189,720,268	Jul. 23, 1898	Improvements in Profiling Machines	Thomas Webster	, England
		Improvements in Profiling Machines	Arthur Edward Bennett	, England
18,972,026	Jul. 23, 1898	Improvements in Profiling Machines	Thomas Webster	, England	Abstract: Profiling-machines for shaping articles such as cycle cranks, connecting-rods or links, &c. are constructed with a vertical slide 11, adjustable by a screw 15 on a standard 10 which can slide horizontally on a saddle 9 supported on a bed 8 on the frame 7. The work 30 is secured to a former or templet 29 on the faceplate 28 of the spindle 23, which is mounted on the slide 11 and which is driven from the shaft 16 by worm gearing 25 and a friction clutch 26. The screw 15 is driven through spur gearing 18, 17 and a friction clutch 27 from the shaft 16, which is rotated by bevel gearing 19, 20 from the pulley 21. The work is first adjusted with its upper edge against the cutter 36 mounted in the spindle 37 and the machine is started, the former 29 being held against a roller 40 secured in a standard 41 by a weighted chain attached to the slide 10. The spindle 23 is prevented at first from rotating by a spring catch 34 on the slide 11 engaging a notch in the faceplate 28, the slide 11 being raised by the rotating screw 15 and one vertical side of the work being profiled until a bracket 44 on the slide strikes a stop 45 on a shaft 46 when the further rotation of the screw 15 is arrested, the clutch 27 slipping. The end 34a of the catch 34 also strikes a stop 47 and the faceplate is released, allowing the spindle 23 to rotate for profiling the rounded end of the work 30. After half a revolution of the spindle 23, a stop 48 on the face-plate 28 strikes an arm 49 and oscillates the shaft 46, swing ing the stops 45, 47 aside and permitting the catch 34 to engage the notch 33 in the faceplate 28 and arrest the motion of the spindle 23, and allowing the screw 15 to move the slide 11 again vertically for profiling the other vertical side of the work. If both ends of the work are rounded, for profiling the second end, the work requires to be re-set with this end concentric with the axis of the spindle 23, or, according to the Provisional Specification, the head carrying the cutter may be made to move round in a circular path. The Provisional Specification also mentions that a stop on the slide coming in contact with an inclined surface on a bracket may be employed to move the slide to permit the cutter to pass over projections or angles on the work where there is danger of breaking the cutter or former.
		Improvements in Profiling Machines	Arthur Edward Bennett	, England
190,313,728	Apr. 21, 1904	Improvements in Boring or Turning Mills	Thomas Webster	, England
		Improvements in Boring or Turning Mills	Arthur Edward Bennett	, England
191,517,937	Aug. 17, 1916	Improvements in Duplex Boring and Turning Mills	Webster & Bennett, Ltd.	, England	Abstract: One spindle C<2> of a duplex boring and turning mill is driven through reversing-gearing F, so that when turning, the tables may run as usual in opposite directions, but when boring, they may run in the same direction, thus avoiding the provision of special reamers &c. The feed is driven from the non- reversing shaft of the gearing.
		Improvements in Duplex Boring and Turning Mills	Harry Thompson	, England
191,517,938	Aug. 31, 1916	Improvements in the Feed Mechanism of Boring and Turning Mills	Webster & Bennett, Ltd.	, England	Abstract: The vertical and horizontal feeds of a boring and turning mill are so driven from a common shaft that each feed has its own trip mechanism. A worm shaft B can be rocked about an axis A<2> to engage either the feed-wheel C<2> or the wheel D<2>, and is locked by arms E engaging under lugs A<3>. In this position, a spring M acting, through a lever pivoted at L<4>, on lugs K, K<2> tends to return the worm shaft to its central position, the action to raise the spindle being more powerful than that to lower it, thus balancing the weight of the spindle. The arms E are carried by rockshafts having arms E<3> tripped by dogs J driven through gearing from the feed-shafts C, D. Friction clutches G provide for setting the dogs to trip at the required points, adjustment being facilitated by graduations on the front of the clutches.
		Improvements in the Feed Mechanism of Boring and Turning Mills	Harry Thompson	, England
191,516,897	Oct. 12, 1916	Improvements in Tool Holders for use on Boring Machines and other Machine Tools	Webster & Bennett, Ltd.	, England	Abstract: A method of clamping a tool-holder shank is described with reference to the turret of a boring-machine. The toolholder, in which tools are clamped at K, has its shank provided with flats D, E on opposite sides of the axis for engagement by set-screws for angular adjustment and clamping. The flat E is carried to the end of the shank to facilitate removal of the tool-holder, but the flat D is formed in a recess to prevent accidental dislodgment of the tool-holder during adjustment.
		Improvements in Tool Holders for use on Boring Machines and other Machine Tools	Harry Thompson	, England
191,517,939	Oct. 19, 1916	Improvements in the Control Mechanism of Boring and Turning Mills.	Webster & Bennett, Ltd.	, England	Abstract: Variable-speed and reversing gearing employed in a boring and turning mill is controlled by the movements of a single handle through a sliding and rocking shaft. The handle D, Fig. 3, is pivoted to the shaft A at E and has a ball end D<2> serving as a fulcrum and working between curved guides C. In a modification, the handle rocks the shaft through a splined sleeve H to which it is pivoted at F, to slide the shaft through rack teeth and a quadrant J.
158,123	Feb. 03, 1921	Improvements in Turret Heads for Machine Tools	Webster & Bennett, Ltd.	, England	Abstract: In a turret-head of the type comprising a central clamping-bolt which is adapted also by angular movement to actuate the locking element of the indexing - mechanism, the turret C is carried on a hollow arbor secured to a supporting-member B having a recess into which fits the indexing-ring D. A central spindle F having an enlarged threaded portion F<2> engaging the turret arbor carries an eccentric pin F<3> and may be rotated to move a link F<4> and thus disengage the locking- bolt E of the indexing-mechanism. The rotating gear is carried by a member G having a spigot G<2> fitting the turret arbor. A nut F<7> actuated by a lever clamps the head and rotating gear; when this nut is slackened, the spindle F may be rotated to disengage the locking-bolt by means of an arm F<10>. The rotation of the turret head is effected by means of an arm A<9> on a spindle A<8> carrying a pinion A<7> engaging an internal spur-gear A<6>. The gearing is so arranged that one revolution of this arm, determined by a spring-pressed detent A<11>, produces the required angular movement of the turret.
		Improvements in Turret Heads for Machine Tools	Arthur Edward Bennett	, England
304,980	Jan. 31, 1929	Turrets for Vertical Boring and Turning Mills	Webster & Bennett, Ltd.	, England	Abstract: In a turret for a vertical boring and turning mill, a base flange 5 on the turret is tightened against, a similar flange 6 on the turret slide 3 by means of a split ring consisting o: at least two segments connected rigidly at 11 by means of a key 12. The split 13 is closed before machining the groove 9 so that the ring may open when the clamping means are released. One end of the ring is anchored by means of a bolt 15 which passes through a clearance hole 21 and may be adjusted to take up wear of the ring. The other end of the ring is fitted with a hardener disc 25 and is actuated to clamp the turret by means of a cam 22 on a spindle 23 operated by a hand lever 24. The spindle 23 is also fitted with a cam 29 co-acting with a pivoted lever 31 engaging the index locking-bolt 28 so that, after unclamping the turret, further movement of the lever 24 causes the lever 31 to be rooked to withdraw the bolt. The turret is then indexed and thereafter reverse movement of the lever 24 re-engages the, looking bolt and finally clamps the turret.
		Turrets for Vertical Boring and Turning Mills	Alfred Morris Dunn	, England
522,338	Jun. 14, 1940	Improvements Relating to Control Mechanisms for Metal Cutting and Other Machine Tools	Webster & Bennett, Ltd.	, England	Abstract: In a device for controlling a machine tool such as a boring and turning mill or a grinding- machine having work or tool slides movable in perpendicular directions a manual control lever actuates the various directional controls by means of pivotal movements in at least two planes at right angles to each other and has also an axial movement for effecting speed changes in the slide movements. In one form a lever a pivoted at b between a fixed abutment g and a spring pressed abutment h may be moved through a gate c having either two slots at right angles or four slots at 45 degrees. The inner end of the lever is connected at n to a member k on a cam shaft m. Movement of lever a in a horizontal plane (plane of paper) causes the shaft m to move axially whereupon cams r, p actuate plungers s to open valves t forming part of hydraulic mechanism controlling horizontal tool movements. Similarly movement of lever a in a vertical plane rotates the shaft m and causes a cam q to actuate the valves controlling the vertical tool movements. If the lever is moved at an angle to the horizontal both vertical and horizontal tool movements may be operative simultaneously. To control the rate of feed the lever is moved axially, thus forcing back the member h and causing a plunger u to operate a switch or valve 13 to change to a high speed either through variable gearing or by starting up another motor. Spring stops w prevent the lever a from being moved axially to change to the high speed unless it is in its neutral position but when the high speed is operative the stop collar x on the lever is between the stops wand the lever may be shifted to engage the lower speed without first returning to neutral. In a modification, Fig. 2, the control lever is in two parts a, a1 relative axial movement between the parts being limited by pin-and-slot 2, 3. The part a1 is pivoted on trunnions 8 to a forked part 5 which is itself carried on a trunnion 7 having an axis at right angles to the trunnions 8. The part a1 is secured to a member 9 carrying cams p ... p2 which actuate the control plungers s ... s2. Thus movement of the handle in a horizontal plane moves the part a1 about the pivots 8 and controls the horizontal tool movements while movement in a vertical plane rocks the part 5 around trunnion 7 and controls the vertical tool movements. Axial movement of the lever portion a causes its tapered end to actuate a plunger u to effect the speed change. Overlapping spring blades 14 co-act with a stop collar x to prevent axial movement unless the lever a is in neutral but when the high speed is in operation the stop collar is between the springs and the lever may be returned to low speed position without first returning to neutral. The manual lever may be replaced by a foot lever. The controls operated by the lever may be valves, switches, clutches, or other mechanisms.
		Improvements Relating to Control Mechanisms for Metal Cutting and Other Machine Tools	Denis Ward Bennett	, England
528,996	Nov. 12, 1940	Improvements Relating to Push-button Control Mechanisms	Webster & Bennett, Ltd.	, England	Abstract: A push-button control mechanism comprises a number of switches actuated by a series of slid able push bars arranged parallel with each other and adapted to act through a series of slid able or rotatable members. Push-button bars h fitted with push-buttons i are arranged in a, single row in a frame a and urged towards their inoperative position by springs j. Each bar has one or more pins p adapted to co-operate with inclined grooves o in transverse bars b adapted to actuate switches against the action of springs e. Each push-button when depressed acts through an inclined surface or surfaces and at the same time an additional pin on the bar passes through a similar gap in a locking bar, which snaps back under the influence of spring q to lock the particular push-button until a second pushbutton or unlocking push i<1> is depressed. The push bars may pass through inclined holes in the bars and the pushes may be arranged in two banks, grooves being provided on both sides of the locking bar. In a modification, the actuating and locking members are in the form of discs freely mounted on a common spindle and are actuated by push bars arranged around that spindle. The discs have inclined slots to co-operate with pins on the push bars, V-shaped cam-grooves to co-operate with the switch spindles, and spring-loaded plungers to return them to their inoperative positions.
		Improvements Relating to Push-button Control Mechanisms	Henry Thomas Mayo	, England
646,094	Nov. 15, 1950	Improvements in and Relating to Change Speed Gearing	Webster & Bennett, Ltd.	, England	Abstract: A pneumatic, hydraulic or electric inching device, for imparting a slow oscillatory movement to the main input shaft c of a sliding - gear or clutch change-speed gear during a manual or power shift. whilst the main clutch is disengaged, to facilitate gear engagement, is controlled by the sliding gear members b, Fig. 3, so that the device functions only when one or more are not in correct mesh. In the hydraulic control shown the input shaft c is slowly oscillated by a reciprocating piston o, Fig. 4, having rack-and-pinion engagement m, with a disc h which is frictionally or positively clutched to the input shaft c by pressure applied to the right face of a piston g, Fig. 3, in opposition to pressure acting constantly on its stepped left face. Movement of any one or more of the sliding-gears b, Fig. 3, from its engaged position closes a corresponding one of a group of valves t arranged in series in a pipe-line w, thus cutting off pressure-supply from an inlet through the line w to the lower face of a piston-valve 5, Fig. 2 which then moves downwards u n d e r load of a spring or, as shown, of pressure act in g constantly through an inlet 7 or the upper face of a push-piece 26 of lesser diameter. This downward valve movement cuts off a pressure inlet 8 and exhausts at 32 the line 9 of the main hydraulically-actuated clutch (not shown), which then disengages. At the same time the valve 5 shuts off an exhaust-port 27 from, and pressurizes, from the inlet 7 through a passage 28, a line 11 leading to the right face of the inching-clutch piston g, Fig. 3, which then engages. Movement of the valve 5, Fig. 2, also opens the pressure-inlet passage 28 to a passage 29 opening to a reversing-valve 6, which initially feeds pressure through a line 17 to the left inlet r, Fig. 4, of the inching-piston o, which then makes a stroke to the right, inching the input shaft c, at the completion of which it operates a change-over valve 22 which changes the feed-connection of a pressure-inlet 23 from a line 19 leading to the upper face of the reversing-valve 6, Fig. 2, to a line 20 leading to its lower face, whereby the reversing-valve 6 moves up to exhaust the line 19 and pressurize the line 20 leading to the right inlet s of the inching-piston o. The latter then makes a return stroke to the left, operating the change-over valve 22, to continue the reciprocating sequence until completion of mesh of the desired gear causes the valves t again to open the pressure-line w, which returns to the piston-valve 5, Fig. 2, to its upper portion exhausting the inching- piston and inching-clutch lines 29, 11, and again feeding the main-clutch line 9 to resume drive in the new ratio. According to the Provisional Specification the rack piston may turn the shaft through a one-way clutch to impart stepwise angular movement thereto in one direction only.
		Improvements in and Relating to Change Speed Gearing	Denis Ward Bennett	, England
682,630	Nov. 12, 1952	Means for Automatically Actuating Machine-Tool Slides	Webster & Bennett, Ltd.	, England	Abstract: In a machine tool with a tool holder carried by slides movable at right angles, shafts j, m actuating the slides are driven through worm gearing h, q and friction clutches k by the output shafts g, p of a pair of differential gears, the input shafts f, o of which are driven through worm gearing c, d from the shaft b of a constant-speed electric or fluid motor a, the planet carriers of the two differentials being driven through worm gearing t, x from variable-speed electric or fluid motors 3, 4, whereby the speed and direction of motion of the shafts j, m are controlled. The speeds of motors 3, 4 are controlled by the movements along a pattern of a stylus carried or operated by the tool holder.
759,046	Oct. 10, 1956	Vertical Boring, Drilling, Turning and Like Machine Tools	Webster & Bennett, Ltd.	, England
		Vertical Boring, Drilling, Turning and Like Machine Tools	Denis Ward Bennett	, England
792,320	Mar. 26, 1958	Templates for Use With Machine Tools	Webster & Bennett, Ltd.	, England
		Templates for Use With Machine Tools	Denis Ward Bennett	, England
2,040,205	Aug. 28, 1980	Rotary Turning Machine	Julius Harman	, England
2,040,204	Aug. 28, 1980	Swarf and Lubricant Clearing System for Machine Tools	Julius Harman	, England
2,040,203	Aug. 28, 1980	Turning Machine With Angled Workpiece Carrier	Julius Harman	, England
2,043,497	Oct. 08, 1980	Workpiece Handling Apparatus for a Machine Tool	Webster & Bennett, Ltd.	, England	Abstract: Apparatus for handling workpieces on a machine tool particularly where a workpiece support platen 10 is inclined to the horizontal, comprises a lifting frame comprising a ring 32, a centre member 31 and connecting bars, situated in use between the platen 10 and the workpiece, can be raised with the workpiece, when gripping jaws 28 have been released from the workpiece, the lifting being carried out by lifting rings 62. Alternatively, a fluid pressure can acts via cam levers and brackets, or racks and sector arms on the ring 32. The lifting ring are also utilized for removing the frame and workpiece for replacement. Some frame bars are movable to grip the workpiece when transported and lifted.
2,044,482	Oct. 15, 1980	Compensating Gear Transmission Errors in Positional Control Apparatus	Julius Harman	, England	Abstract: A positional control apparatus for a machine tool includes a movable member, such as a slide 10, and a means such as a motor 18, for driving said member through a transmission 13, 15. Means 17 measures the movement of slide 10 and further means 20 measures the movement at the motor 18. The measurements are compared and the result used in a control unit to correct the position of the slide 10 by movement of the motor 18.
		Compensating Gear Transmission Errors in Positional Control Apparatus	Ian Barry Golding	, England
2,045,668	Nov. 05, 1980	Machine Tooling Arrangement	Julius Harman	, England	Abstrct: A machine tool has a rotary workpiece support 12 for carrying a workpiece W and conveniently being mounted at a plane inclined to the horizontal, two tooling arrangements 18-22 and 25-27 being arranged for machining of the workpiece but only one of the tooling arrangements 18-22 permitting machining to the centre of the workpiece support and travel of the other tooling arrangement 25-27 being limited on its slideway to a position spaced from the axis precluding possible collision of the tooling arrangements.
2,051,630	Jan. 21, 1981	Indexing Mechanism for a Machine Tool	Julius Harman	, England	Abstract: A mechanism for rotary indexing a turret on a machine tool and including a rack (39) engaging a pinion operatively connected to the turret, the rack being formed on a piston (41) slidably mounted in a cylinder (42), the cylinder having means for the supply and exhaust of fluid under pressure, movement of the piston between mid-position and one end affecting single turret indexing and movement from one end to the other affecting double indexing. The ends of the cylinder contain respective further pistons (48) which regulate the stroke of the main piston (41).
2,053,749	Feb. 11, 1981	Tool Holders	Julius Harman	, England	Abstract: A tool holder for a tool with a tapered shank (31) with a groove (32), and comprising an inner sleeve (35) with a taper to accept the tool shank (31), an outer sleeve (36) around the inner sleeve (35) and biased by a spring (38), balls (43) which are engaged in the inner sleeve (35) can move into the tool shank groove (32) and are prevented from disengagement by the outer sleeve (36), which can be moved axially into a release position via pins (41).
2,053,748	Feb. 11, 1981	Locking Device for Indexing Mechanism for a Machine Tool	Julius Harman	, England	Abstract: A device for locking an indexable turret comprising a part (61) being fixed to the turret and having teeth (63), a part (15) having teeth (17) and fixed to the structure on which the turret is mounted and relatively to which it is indexable, and a movable part (38) having sets of teeth (39 and 41) which can engage simultaneously with the teeth (63 and 17) on the parts (61 and 15) on the turret and structure respectively, and fluid pressure means arranged to move the movable parts (38) between a position in which the teeth are in engagement and a further position in which they are out of engagement but in which the set of teeth (39) are in engagement with a member (42) forming part of means for indexing the turret.
2,068,791	Aug. 19, 1981	Chucks	Julius Harman	, England	Abstract: A chuck for a machine tool includes a body 10 with a number of jaws 11 movable in radial slots 13, movement of the jaws 11 being by means of respective lead screws 17 engageable with a drive mechanism incorporating a main clutch 52, 53 and the individual lead screws being engageable or disengageable with the drive mechanism main clutch through respective further clutches 31, 32, the main and further clutches being fluid pressure actuated.
1,149,285	Dec. 03, 1986	Lathe for Machining Large Workpieces - Has Faceplate Inclined at 45 Degrees to Combine Rigid Frame With Ease of Access	Julius Harman	, England	This is an Italian patent. Abstract: The lathe for machining large workpieces has a base (10) which supports a face plate (11) mounted at 45 deg.. The spindle (23) is driven from the motor (16) through the pulley (17) and gear box (18), The tool post (31) is mounted on the slide (29) which is also inclined at 45 deg.. The slide runs on a second slide (26) which runs on longitudinal guides (27). This design of lathe provides a frame with the rigidity of a horizontal lathe but with the ease of access to the workpiece (W) of a vertical lathe.
1,198,335	Dec. 21, 1988	Locking Device for Setting Component in Machine Tool - Has Signal Generator Comprising Switch and Holes to Monitor Setting	Julius Harman	, England	This is an Italian patent. It is the same as British patent #2,053,748. Abstract: The locking device has a moving part with segments forming a ring with teeth to engage the setting component and moved by fluid pressure. The moving part has teeth to engage the non-moving arrangement and a rotary part to set the setting component. A signal generator monitors the setting of the component. The signal generator (or generators) has different identifiers to delineate different settings. The identifiers are series of holes on the hub distance switch, connected at the side of the revolving head of the tool.