Adcock & Shipley Ltd. - Assigned Patents

Manufacturers Index - Adcock & Shipley Ltd.

Adcock & Shipley Ltd.
Leicester, England, U.K.
Manufacturer Class: Metal Working Machinery

Patents

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Patent Number	Date	Title	Name	City	Description
287,304	Mar. 22, 1928	Improved Feed Mechanism For Drilling And Similar Machines	George Adcock	, England	In a drilling or like machine wherein the change from hand to power feed and vice versa is controlled by manipulating the hand lever which effects the feed, the pinion d which engages the rack on the spindle sleeve is rotated, by a shaft e through which passes the hand feed lever e<2>. A sleeve i, slidably keyed to the shaft by a transverse pin j<2>, has clutch teeth adapted to engage similar teeth on a member k rigidly secured to a worm-wheel h which is continuously rotated from a power shaft g<2>. The clutch parts are normally separated by a spring m but may be engaged by sliding the lever e<2> transversely of the shaft so as to cause a ball or roller l to ride out of an annular groove l<2> in the lever. To stop the power feed at any predetermined point a cam o fixed to a stationary disc o<2> adjustably secured to the casing f of the gearing is adapted to engage a bevelled collar n on the lever as the latter rotates and cause the ball to enter the groove l<2> and release the clutch. Should it be desired to render the power feed inoperative, a nut n<2> may be secured along a sleeve n<3> secured to the lever so as to engage the collar n with a sleeve e<4> on the shaft and maintain the lever in its central position. The drill spindle may be returned by a spring e<3> with or without weights, and the individual teeth of the clutch k, i, preferably include an angle of 90 .
		Improved Feed Mechanism For Drilling And Similar Machines	Howard Shipley	, England
345,690	Apr. 02, 1931	Improved Feed Mechanism For Drilling, Boring, Facing And Other Machines	George Adcock	, England	In a feed mechanism for a boring, drilling, facing, or similar machine a carrier for one or more adjustable dogs is rotatable or reciprocable together with the spindle feed-shaft and acts through the dogs, levers, &c. to cause clutches to be actuated to vary the speed of the feed by means of an overrunning free-wheel clutch. The drill may be advanced rapidly to the work, then be given a slow cutting feed and next be rapidly retracted or advanced rapidly to a second portion of the work for a further cutting operation. The drill-spindle 2 is fed by the usual quill 4 meshing with a pinion 5, Fig. 2, secured to a shaft 6. A vertical shaft 7 driven from the drill-spindle rotates, through gearing 8, a worm spindle 9 engaging a worm-wheel 10 rotatable on the shaft 6 and through further gearing a shaft 13 connected by bevel gears 14 and spur gears 16, 17 to the rotatable carrier 18 secured to the shaft 6. A roller ratchet 12 connects the worm-wheel 10 to a sleeve 11 which may be clutched to the shaft 6 after the manner described in Specification 287,304, [Class 83 (iii), Metals, cutting], by means of a clutch 23 keyed to the shaft and slidable axially by a spring-opposed plunger 42, a ball 41 and a circumferential groove 40 in a hand lever 39 slidable transversely through the shaft. In operation the feed is started by raising a hand lever 35 so as to rock a shaft 34 and cause a cam 36 thereon to oscillate a lever 37 and displace the handle 39 transversely to the shaft 6, thereby engaging the clutch 11, 23 and enabling the shaft 6 to be rotated slowly by the worm-wheel 10. Simultaneously a pinion 33, Fig. 1, on the end of the shaft 34 engages rack teeth on a stop 31 to withdraw the stop from under the end 30 of a lever 29 secured to a shaft 24. A spring plunger 47 then rocks the shaft 24 and causes a yoke thereon to actuate a clutch connecting the shaft 15 with the shaft 13, thus enabling the shaft 6 to be rotated rapidly through the gearing 16, 18 whilst the ratchet 12 is overrun. A lever 27 secured to the shaft 24 carries a pin 28 which, when the shaft is rocked by the spring 47, lies in the path of a dog 20 adjustably secured in a circular groove 19 of the carrier 18 so that at a predetermined point the shaft 24 will be rocked in the reverse direction and will disconnect the rapid drive to the shaft 6. The worm-wheel 12 then applies a slow cutting feed to the drill, which continues until an adjustable stationary stop 43 engages a cam 45 on the handle 39 to disconnect the clutch 11, 23 and allow the drill to be retracted by a spring 46 or a weight. As soon as the lever 35 is released by the operator, a spring (not shown) tends to return the stop 31 to operative position so that immediately the lever 27 is rocked by the dog 20 the stop may shoot under the lever 29 and prevent the rapid feed from being engaged until the cutting operation has been completed. This is further prevented by the pin 28 riding on the outer edge of the dog 20. In a modification the clutch for the rapid feed is first engaged by the hand lever 35, Fig. 7, whereupon the shaft 6 is rotated rapidly to feed the drill to the work. A cone 54 on the handle 39 then contacts with a pivoted catch 49 backed by a stop 52 adjustably secured in a circular groove 44 of the machine frame, causing the handle to engage the slow feed clutch 23 which is overrun until the rapid clutch is disengaged by the dog on the carrier 18. The slow feed acts alone until the fixed stop 43 engages a second cone 54 on the handle 39 to disconnect the clutch 23 and allow the spindle to be returned. On the reverse rotation of the shaft 6 the handle 39 rotates the catch 49 about its pivot 50 and passes it without engaging the clutch 23. In a further modification in which several cutting feeds in the same direction are alternated with rapid traverses, the carrier 18, Fig. 11, is provided with a number of dogs 55, 56, between each pair of which a cam 57 is mounted. While the rapid feed is overrunning the ratchet clutch a dog 55 engages the pin 28 as described above to disconnect the rapid feed, the cutting feed then continuing until the cam 57 acts on the end of the stop 31 to allow the shaft 24 to be rotated by the spring plunger 47 and re-engage the rapid clutch. The carrier 18, instead of being rotated by the drill-spindle, may be reciprocated and carry the dogs 20 in a straight slot.
		Improved Feed Mechanism For Drilling, Boring, Facing And Other Machines	Howard Shipley	, England
354,386	Aug. 10, 1931	Multiple Spindle Drilling And Like Machines	George Adcock	, England	In a multiple spindle drilling or like machine, the tool spindles are fed towards and away from the work by means of a slidable grooved collar, concentric with the main driving shaft, which controls bell-crank levers connected to the spindles. The driving shaft 3 of an electric motor 2, Fig. 1, rotates, by means of bevel gears 4, 5, 7, 8, lay shafts 9 which drive the drill spindles 12 through spur wheels 10, 11. Concentric with the vertical driving shaft 6 is a grooved collar 17 which is rigidly connected by rods 19 to a slide 20, normally forced downwards by extension springs 30; a cam 22 fixed to a shaft 23, which is driven by a worm and worm wheel 25, 24 from a secondary shaft 26, imparts a uniform feed and quick return to the tool spindles by contacting with a roller 27 attached to the slide 20. A number of bell-crank levers are rotated by the movement of the collar 17 and simultaneously feed the drill spindles ; allowance is made for the vertical movement of the ends 37 of the levers by providing pivoted blocks 40, Fig. 2, which move in vertical grooves 41 in collars 42 attached to the spindles. Feed of the spindles is automatically stopped by arranging a clutch device, Fig. 3, to uncouple the worm wheel 24 from the cam shaft 23. A bar 45 having a limited movement in a transverse boring of the cam shaft 23 is provided with a groove 48 into which a spring- pressed ball 49 seats when the clutch element 44 is uncoupled from the worm wheel; the bar 45 is manually set and rotates with the cam shaft and worm wheel until a conical catch 50 on the bar contacts with an adjustable stop 51 mounted on the fixed face-plate 52. The tool spindles may also be arranged with their axes inclined or parallel and the whole machine may be bodily reversed so that the work may be more easily introduced and removed from the jig 14.
		Multiple Spindle Drilling And Like Machines	Howard Shipley	, England
354,723	Aug. 10, 1931	Improved Feed Mechanism For Drilling And Similar Machines	George Adcock	, England	Feed mechanism for drilling and similar machines of the kind wherein the feed is commenced by the coupling of a clutch, the working operation being performed within one complete rotation of a trip means which acts in conjunction with a weight, spring, or other means to return the tool to the normal position, is characterized by a device that automatically reclutches the clutch on the return of the tool to the normal position. The invention is particularly applicable to the apparatus described in Specification 287,304. As shown a main axle a<2> has a pinion a gearing with a rack on the feed sleeve of the spindle of a drilling machine. The pinion a is rotated upon engagement of clutch members d<3>, e<2> by a worm d and worm wheel d<2>. The clutch member e<2> is connected to a spring-actuated plunger e<4> within the axle a<2>. The axle a<2> may be rotated manually by a lever e slidable transversely of the axle a<2> within limits defined by stops h and having a groove e<5> which coacts with a ball or roller g in the end of the plunger e<4>. Displacement of the lever e to remove the ball g from the groove e<5> energizes the clutch parts d<3>, e2, and the pinion a is rotated. After the members a, e have moved a part of a revolution and the tool has performed its work an adjustable stop h<2> engages a conical face h<3> on the lever e and the latter is moved to register the ball g and groove e<5> and de-energize the clutch d<3>, e<2>. The tool is then returned to its initial position by the action of a spring f upon the axle a<2>. The end l<2> of the lever e thereupon engages a spring-pressed plunger i<2> and is moved to re-energize the clutch d<3>, e<2>, and the working tool again descends. A leaf spring m engageable with a conical face n on the lever e may be used instead of the plunger i<2>
		Improved Feed Mechanism For Drilling And Similar Machines	Howard Shipley	, England
539,497	Sep. 12, 1941	Improvements In Or Relating To Electric Switch Apparatus With Safety Doors Or Cover-plates	George Adcock	, England	When the lid 12 of a switch box 10 is opened. a curved lever 16 which bears against the lid is moved by a spring 17 into the dotted position, causing the rotation of a shaft 15 and the moving of contacts 14a, carried by the shaft, into the "off" position.
		Improvements In Or Relating To Electric Switch Apparatus With Safety Doors Or Cover-plates	Howard Shipley	, England
540,796	Oct. 30, 1941	An Automatic Screw-thread-cutting Machine	George Adcock	, England	An automatic screw thread cutting lathe particularly for cutting threads in nuts has means for giving repeated relative traverses between tool and work, the tool being withdrawn laterally from the cut at the end of a cutting traverse, returned idly and restored to take a deeper cut at the beginning of the succeeding cutting traverse. The work holder 10 is mounted on a lead screw 11 running in a nut 12 secured to the fixed headstock 13, the lead screw being driven from a cross shaft 15, worm gearing and a reversing electric motor or reversing gearing (not shown) to reciprocate the work past the tool 24. The shaft 15 also drives a countershaft 17 which through a friction clutch 18 drives an oscillating feed cam 20 actuating the tool holder 22. At the end of each cutting traverse the cam is rotated to withdraw the tool for the idle return movement of the work and at the end of the return the cam is rotated in the reverse direction through a larger angle to apply the cut. The shaft 19 carries a disc 27 fitted with a pin 28 which on reversal at the end of the cutting traverse is moved to engage a fixed stop 25, the clutch 18 then slipping. At the end of the idle stroke, reversal of shaft 19, causes a second pin 29 on the disc 27 to engage a movable stop 26 after which the clutch again slips. The stop 26 is carried on a pair of loose oppositely-toothed ratchet wheels 30 operated by a pawl 33 on a carrier 31 rocked at the end of each idle stroke by a pivoted cam 36 carried by a sliding part 38. A ramp 35 on the carrier disengages the locking pawl 34 to permit this movement. The upper slide 22b carrying the tool bar is adjustable by a screw 40 on a lower slide 22a, both slides being carried by a lognitudinally-adjustable member. The cam 20 maybe shaped to apply heavy cuts for the first few strokes and thereafter progressively lighter cuts. Indexing mechanism may be provided for cutting multi-start threads. A counting device 43 may be arranged to stop the machine after a predetermined number of traverses.
		An Automatic Screw-thread-cutting Machine	Howard Shipley	, England
567,405	Feb. 13, 1945	Improvements Relating To Electrically-driven Machines Having Built-in Motor Control Gear	George Adcock	, England	Control gear for an electrically - driven machine having an individual motor is mounted in a drawer-like structure which pushes into the body of the machine, in the case of built-in control gear, or a cabinet separate from the machine, an isolating switch being provided for de-energizing the control gear before the drawer can be pulled out. Fig. 1 shows control gear, such as fluidfilled contactors 15, transformers 16, timing relay 17 and overload switches, mounted in a partitioned metal drawer 13 which slides on rollers 19 into a recess 10 in the body 11 of a machine. The runners 18 for the rollers preferably extend beyond the rear of the drawer to support the latter when fully withdrawn from the recess, complete withdrawal being prevented by a stop 21 attached to the rear of the drawer and travelling along a rod 22. Plug-in contacts may be associated with the drawer and a stationary part of the machine to de-energize the control gear and motor before the drawer can be opened, but, preferably, an isolating switch of the kind described in Specification 539,497 is provided in a recess 24 at the other side of the machine bed, the switch including contacts 25, 26 which, when its pivoted door 27 is opened, automatically disengage to de-energize the control gear. Opening of the door releases a pivoted catch 30 which normally engages a keeper 31 on the back of the drawer to prevent opening of the latter. In another construction the control gear is mounted in two drawers arranged one above the other and sliding on runners secured to a framework fixed in the recess in the machine.
		Improvements Relating To Electrically-driven Machines Having Built-in Motor Control Gear	Howard Shipley	, England
1,338,098	Nov. 21, 1973	Handles	Adcock & Shipley, Ltd.	, England	A handle 10 which is automatically connected to a shaft 12 when the handle is rotated comprises a clutch pin 26 radially slidable in an arm 18 of the handle and biased by a spring 28 into engagement with a flat on an extension 24 of a hand grip 20 which, when rotated relative to the arm 18, moves the clutch pin 26 radially inward into engagement with a recess in the shaft 12. The end 34 of the clutch pin 26 and the recesses in the shaft 12 are tapered radially outwardly and tend to retain the clutch engaged during drive. The shaft 12 may have a plurality of circumferentially spaced recesses. In Fig. 4 (not shown) the hand grip (52) is rotatable on a spindle (54) and a friction drag coupling (58) is interposed between the hand grip and spindle to cause rotation of the spindle relative to the arm of the handle for clutch engagement.