Scully-Jones & Co. - Assigned Patents

Manufacturers Index - Scully-Jones & Co.

Scully-Jones & Co.
Chicago, IL, U.S.A.
Manufacturer Class: Metal Working Machinery

Patents

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Patent Number	Date	Title	Name	City	Description
1,252,335	Jan. 01, 1918	Tapered Sleeve	Robert Ellmore Foote	Harvey, Cook County, IL	Brown, Hanson & Boetteher - patent attorneys
1,411,335	Apr. 04, 1922	Rotary cutter	Robert E. Foote	Harvey, IL
2,105,757	Jan. 18, 1938	Boring Tool	Benjamin F. Rosenberg	Chicago, Cook County, IL	Claim: A boring tool comprising a boring bar having a head at one end thereof provided with a transverse opening extending from the end of the head diagonally toward the opposite side and having a reduced portion opening through the opposite side and providing a shoulder, a split quill fitting in said opening, a pin engaging with the head and quill for holding the quill in position, said quill having a central bore of angular cross section, a cutting tool fitting in said bore and g0 having a threaded hole at the inner end thereof, a set screw mounted in the head and engaging with the quill for fastening the tool in adjusted position, an adjusting screw engaging with the threaded hole in the tool and having an annular projection engaging with the shoulder at the bot-tomt of said opening, the head of the set screw extending through the reduced portion of the opening and provided with a peripheral scale, and a mark on the head registering with said scale.
2,182,411	Dec. 05, 1939	Tool Holder	Benjamin F. Rosenberg	Chicago, Cook County, IL
		Tool Holder	James A. Scully	Chicago, Cook County, IL
2,206,292	Jul. 02, 1940	Method of Making a Drill Sleeve	Benjamin F. Rosenberg	Chicago, Cook County, IL	Claim: The herein described method of forming a drill sleeve or the like which comprises making a blank having a tapered outer surface and having an annular recess extending inwardly from the large end thereof, the sides of the recess being substantially parallel to the sides of the blank, then placing the blank in a die having a hole of exactly the same conformation as the blank throughout the larger portion thereof and having a slot in one side, then placing a mandrel of exactly the same shape as the recess, except that one side thereof is flattened longitudinally of the mandrel, in the recess, and then projecting a punch through the slot in the die to cause the adjacent portion of the blank to be forced inwardly against the flattened side of the mandrel while all other surfaces of the blank are prevent-b5 ed from deformation or relative movement.
2,533,758	Dec. 12, 1950	Floating Holder	Bernard Better	Chicago, Cook County, IL	Claim: A floating holder consisting of, a cylindrical driving member, a cylindrical driven tool holding member mounted in the driving member, universal joint connections between the driving member and the driven member, consisting of a cylindrical drive, coupling interposed between the driving member and the driven member having external gear teeth at its lower end that engage with internal gear teeth on the driving member and having internal gear teeth at its opposite end engaging with external gear teeth on the driven member, said gear teeth on both sets of gears always remaining in full engagement and means coacting with the driving member and the driven member for exerting pressure on the driven member independently of the driving means.
		Floating Holder	John W. Lehde	Chicago, Cook County, IL
2,709,600	May. 31, 1955	Lock and Ejector Collets	John W. Lehde	Chicago, Cook County, IL	Claim: Means for mounting drills or other tools in the spindles of machine tools, consisting of an adapter, means for adjustably mounting the adapter in the end of the spindle, said adapter having a tapered hole in the outer end thereof, a collet having a tapered portion adapted to fit in the tapered hole with a driving fit to actuate a tool, threads on the outer end of the collet, a nut having threads engaging with the threads on the collet, an annular series of balls between the nut and the adapter which serve as a ball bearing for the nut and also act as an annular key for holding the nut against longitudinal movement with respect to the adapter.
2,765,836	Oct. 09, 1956	Straightening Press	Felix J. Niekelski	Chicago, Cook County, IL	Claim: In a straightening press, the combination with a base, of tracks slidably mounted in the base for vertical movement, springs tending to hold said tracks in normally raised position, a rail mounted above the base and movable longitudinally of the base, means for guiding the rail along the base, wheels mounted in the rail and riding on said tracks, means for supporting a piece to be straightened above the rail for the straightening operation and a straightening ram mounted above the piece to be straightened, the arrangement being such that the tracks will normally be held in raised position but when the ram is actuated, the tracks will be depressed so that the rail will rest on the base during the straightening operation.
2,771,804	Nov. 27, 1956	Predetermined Torque Release Wrench	Bernard R. Better	Chicago, Cook County, IL	Claim: In a nut setter, the combination of a driving member having a tapered bore, a driven member mounted in said driving member and having a tapered portion opposed to the tapered bore and having a plurality of Longitudinal evenly spaced cams on the tapered portion with non-driving areas between the cams, a roller cage, rollers in said cage for engagement with said tapered and cam surfaces, means for adjusting the driven member axially with respect to the driving member for increasing or decreasing the driving torque, and means for connecting the driven member to the nut to be set.
		Predetermined Torque Release Wrench	John W. Lehde Jr.	Chicago, Cook County, IL
2,775,326	Dec. 25, 1956	Torque Drivers	Bernard R. Better	Chicago, Cook County, IL	Claim: In a torque driver, the combination of a metallic integral, elastic cylindrical driving member, means for attaching the member to a machine tool, a driven member rotatively mounted in the driving member, said driven member having two driving cams or flats arranged at 180Â° apart the sides of which are elevated with respect to the adjacent surfaces and rollers interposed between the driving member and the driven member .which serve to drive the driven member when they are positioned on the flats but which may override the elevated surfaces at the sides of the flats and consequently stretch the driving member outwardly under excessive torque, a sufficient amount to relieve the turning moment on the driven member but not beyond the elastic limit of the driving member.
		Torque Drivers	John W. Lehde Jr.	Chicago, Cook County, IL
2,791,304	May. 07, 1957	Safe Torque Driver	Bernard R. Better	Chicago, Cook County, IL	Claim: A torque driver for driving taps or other tools having a unitary resilient driving cylinder, a cylindrical driven member in the cylinder having a longitudinal driving face and a roller releasing area spaced from the said driving face, rollers positioned between the driving cylinder and the driven member adapted to drive the driven member when engaging with the driving faces and to release the driven member under predetermined torque and become free when in the releasing areas, a cage for the rollers mounted between the driving cylinder and the driven member, and ball and groove means for holding the cage in predetermined circumferential positions with respect to the driven member.
		Safe Torque Driver	John W. Lehde Jr.	Chicago, Cook County, IL
2,819,635	Jan. 14, 1958	Power Operated, Predetermined Torque Release Tool	Bernard R. Better	Chicago, Cook County, IL	Claim: A torque driver for taps or other tools having a deformable elastic metal driving shell formed of a single piece, means for attaching the shell to a means for turning the same, said shell having a tapered bore which is largest at the open end of the shell, a driven member mounted in the shell and having a tapered portion which is complementary to the tapered bore of the driving shell, longitudinal cams on the tapered portions of the driven member, driving rollers mounted between the tapered surfaces of said driving and driven members, which deform the shell when the resistance on the driven member exceeds a predetermined, amount and means for, axially adjusting the driven member with respect to the, driving member to regulate the amount of torque to be delivered to the driven member.
		Power Operated, Predetermined Torque Release Tool	John W. Lehde Jr.	Chicago, Cook County, IL
2,857,166	Oct. 21, 1958	Quick Change Tool Holder	Harry Conn	Chicago, Cook County, IL	Claim: In a quick-change tool holder, the combination of a tool holding block, a chuck body mounted in the block for longitudinal movement, an adapter adjustably mounted in the body for longitudinal movement, and means whereby the body may be inserted and removed from the end of the block opposite the one from which the cutting tool extends and means for holding the chuck body in adjusted position.
		Quick Change Tool Holder	Aldo D. Tognetti	Chicago, Cook County, IL
2,888,848	Jun. 02, 1959	Cam and Pin Type Mandrel or Chuck	Bernard R. Better	Chicago, Cook County, IL	Claim: In a chuck for turning gears upon which work is to be done, in combination, a mandrel, means for attaching the mandrel to a machine tool, said mandrel having a plurality of circumferentially arranged longitudinal cams spaced equally around the periphery and being provided with slight depressions adjacent to the cams, rollers arranged longitudinally of the mandrel and adapted to coact with said cams for projecting them for engagement with the teeth of a gear work piece, a cage on the mandrel adjacent to the cams having longitudinal slots positioned so that their inner portions will partially break through the inside diameter of the cage, said rollers engaging with said slots and of sufficient diameter so that they will be restrained in the slots, a retaining ring engaging with peripheral grooves in the rollers and with a groove in the roller cage for holding the rollers against longitudinal movement, the arrangement being such that the gear to be worked upon may be readily positioned over the rollers which rollers will assume substantially the pitch diameter of the gear to insure proper alignment of the portion of the gear worked upon with the pitch diameter of the gear.
2,889,022	Jun. 02, 1959	Double Roller Torque Driver	Bernard R. Better	Chicago, Cook County, IL	Claim: A torque driver for the purposes set forth having a resilient driving shell, means for attaching the shell to a machine tool for turning the same, said shell having a tapered bore, a driven member mounted in the shell and having a tapered portion, a roller cage secured to the tapered portion, rollers mounted in slots in said cage, a second roller cage between the first named cage and the driving shell, rollers mounted in slots in said second named cage and engaging with the first named rollers and the tapered portion of the driving shell, the combined diameters of a pair of the first namcd and second named rollers being greater than the distance between the tapered portion of the driven member and the tapered portion of the driving shell, the arrangement being such that the driving shell and pairs of rollers will act as a roller clutch to drive the driven member and when the driven member presents too much resistance, the second named rollers will ride over the first named rollers and deform the driving member and move into non-driving positions, and means for holding the cages with the rollers in non-driving position after such overriding and permitting free wheeling of the driving shell.
		Double Roller Torque Driver	John W. Lehde Jr.	Chicago, Cook County, IL
2,890,054	Jun. 09, 1959	Spline Chucks and Arbors	Bernard R. Better	Chicago, Cook County, IL	Claim: In a device of the class described, a support member, longitudinally splined sleeve means operatively attached to said support member, means defining slots in said sleeve means oblique to said splines, and means for urging said means defining slots circumferentially in the same direction by the application of force axially to said sleeve means, whereby the sleeve means chucks a workpiece thereto, said sleeve means being secured to said support member, against relative rotation with respect to it, generally radially of that portion of the sleeve means which does not have the means defining slots.
2,963,298	Dec. 06, 1960	Hydraulically Expanding Thin Walled Tools	Bernard R. Better	Chicago, Cook County, IL	Claim: An expanding hydrostatic type holder for a tool or work, comprising a relatively thin expansible shell having one surface thereof cylindrical and the other sur-face tapered, a relatively thick substantially inexpansible body having a tapered surface cooperating with said tapered shell surface to alford tight securement between the shell and body, a recess in said tapered body surface defining an expansion chamber with the tapered shell surface, a bore in said body, passage means connecting said bore and expansion chamber, fluid in said passage means, bore, and chamber, and means in the bore to exert pressure on said fluid for effecting expansion of the shell, said tapered surfaces facilitating assembly of the shell and body and acting to effect longitudinal shifting of the shell on the body upon development of fluid pressure in excess of a predetermined value to relieve such excess pressure.
		Hydraulically Expanding Thin Walled Tools	Richard F. Wharton	Chicago, Cook County, IL
2,970,844	Feb. 07, 1961	Tool Holder-Axial Locking Type	Bernard R. Better	Chicago, Cook County, IL	Claim: A presettable cutting tool holding means comprising a rotatable spindle, a collet for holding a cutting tool, presetting means on said collet for permitting gaging of said tool against a preselected standard, means for receiving said collet in said spindle, locking means in said spindle cooperating with said presetting means for locking said collet against longitudinal movement in said spindle, means on said spindle for releasing said locking means to permit removal of said collet from said spindle, and means in said spindle for holding said releasing means in release position while said collet is removed from said spindle and adapted to be rendered inoperative by presetting means inserted in said spindle.
2,972,486	Feb. 21, 1961	Indirect Chucking	Bernard R. Better	Chicago, Cook County, IL	Claim: A chuck adapted for chucking a thin walled Work piece comprising a body member, a relatively thin liner received in said body member, said liner having means for receiving the workpiece therein, cam means for contracting the liner to chuck the workpiece operable by rotation of the liner, means to actuate said contracting means, and means to eject the workpiece from the liner when said actuating means is inoperative.
2,978,082	Apr. 04, 1961	Overload Release Clutch	Bernard R. Better	Chicago, Cook County, IL	Claim: A torque driver including means to connect to a part to be acted upon thereto comprising in combination; a deformable driving riiember; means including a driven member mounted in said driving member; tapered surfaces on said driving riiember and said driven member, one of said surfaces being further provided with a plurality of spaced cams and with non-driving areas between said cams; a roller cage; rollers in said cage and disposed for engagement with one said tapered surface and said camds so that said driving member when rotating will deliver torque to said driven member upon slight pressure of said means including said driven member against said part; means for selecting the maximum value of the driving torque beyond which value the forces will be sufficient to cause a radial deformation of the driving member and allow the rollers to ride over the cams and into the non-driving areas comprising axially movable means supported at least in part by said driven member, radially movable means supported at least in part by said driven member and interengaging said axially movable means whereby radial movement thereof causes axial movement of said axially movable means to change the distance between said tapered surfaces, and rotatable means externally supported on said driven member and operatively associated with said radially movable means for movement thereof; means for maintaining said rollers in the non-driving areas as long as said selected maximum value of said driving torque is exceeded and so long as said slight pressure on said part is maintained; and means to return said rollers to near engagement with said cams upon release of said pressure of said means including said driven member on said part.
2,981,544	Apr. 25, 1961	Floating Holders	Bernard R. Better	Chicago, Cook County, IL	Claim: A floating holder comprising a driving member adapted for use in a machine tool, a toolholding driven member mounted in the driving member, means providing oppositely directed flat bearing surfaces between said driving and driven members, universal joint means between said members for driving the driven member, roller bearing means between the members engaging said flat surfaces and arranged to permit relative movement of the members in any direction normal to the driving axis, and means limiting said relative movement of the members.
2,990,188	Jun. 27, 1961	Tool Holder-Rotary Locking Type	Bernard R. Better	Chicago, Cook County, IL	Claim: A presettable cutting tool holding means comprising a rotatable spindle sleeve, a tool holder for holding a cutting tool, engaging means on said tool holder including presetting means for permitting gaging of said tool against a preselected standard, means for receiving said tool holder in said sleeve, rotatable locking means on said sleeve cooperating with said engaging means for locking said tool holder against axial movement in said sleeve, means on said sleeve to unlock said engaging means to permit removal of said tool holder from said sleeve, and means for retaining said locking means in unlocked position when said tool holder is removed from said sleeve and adapted to be rendered inoperative by insertion in said sleeve of means including presetting means.
		Tool Holder-Rotary Locking Type	Joseph W. Kosinski	Riverside, Cook County, IL
3,017,643	Jan. 23, 1962	Adjustable Tap Stop Means for Limiting Depth of Threading	John W. Lehde Jr.	Chicago, Cook County, IL	Claim: Tap stop means for adjustably limiting the effective length of a tap having a flute extending longitudinally thereof, comprising a nut member threadedly engageable on said tap for adjustable positioning longitudinally thereof and having a longitudinally extending recess projecting radially outwardly from its central opening, said recess being disposable in opposed relation to said flute by rotation of the nut member, a locking member slidable longitudinally of the tap having a portion engaged with the flute and engageable with the nut member recess to prevent rotation of the nut member, and means for detachably connecting the locking member and nut member said connecting means adapted to hold the locking member alternatively in said nut-engaging position and in another nut-engaging position allowing relative rotation of the nut member.
3,041,898	Jul. 03, 1962	Tool Centering Device	Bernard R. Better	Chicago, Cook County, IL	Claim: Means for mounting a tool holder in rigid and centered relation on a spindle or like member of a machine tool or the like, comprising a toot holder having a tapered rigid surface and a second rigid surface, a tapered, thin-walled, resiliently yieldable surface on said spindle member matable with said tapered surface of the tool holder for centering thereof on the spindle member, a rigid second surface on the spindle member engageable by said second tool holder surface, and means for securing the tool holder on the spindle member with said tapered surfaces mattingly engaged to dispose the holder coaxially of the spindle member and with said second surfaces in rigid engagement for rigidifying the holder, said tapered, thin-walled, resiliently yieldabie surface being provided on a ringlike element having a press fit in a recess of the spindle.
3,115,029	Dec. 24, 1963	Torque Tester	Bernard R. Better	Chicago, Cook County, IL	Abstract: A principal object of the invention is to provide a novel and improved torque measuring device which is useful for testing, checking, or calibrating the dynamic torque of screwdrivers, nutsetters, and similar tools, both hand and power operated, as well as fastenings made thereby. Such tools may be divided into two general classes, those of the class having a positive clutch drive, i.e., are so constructed that torque may be applied to ,the workpiece up to the limit of capacity of the tool. Tools of the other class have an adjustable clutch arrangement which allows the tool to be preset to the torque requirements of a particular job, so that the tool "breaks" or its clutch slips when the desired tension has been reached. These settings are, however, subject to wear and/or change, so that there is also a need to be able to regularly check the torque settings of such tools.
3,121,340	Feb. 18, 1964	Resilient Nut for Averaging Out Lead Screw Error	Myron L. Anthony	La Grange, Cook County, IL	Claim: A follower for a lead screw or like threaded member, comprising a retainer, and a plurality of coil springs each having portions of the coils thereof anchored to said retainer and remaining coil portions free of said retainer to be complianty forced into the grooves between the threads of said lead screw.
3,128,645	Apr. 14, 1964	Machine Tool Changer	Myron L. Anthony	La Grange, Cook County, IL	Claim: In a data controlled machine tool, including a transfer mechanism for transferring a plurality of tool assemblies individually between a storage position and an operating position, a control system comprising: encoding means, individually associated with each tool assembly, for identifying said tool assembly in accordance with a predetermined digital code, said encoding means comprising a series of individual code elements, all of substantially similar dimensions and configuration but selected from two groups having different field-coupling properties, mounted on said tool assembly in predetermined alignment with each other; sensing means, located in close proximity to but. spaced from said storage position, for sensing said code elements without physical engagement therewith, said sensing means comprising a plurality of individual field-sensitive sensing elements each exhibiting substantially different electrical properties when in close proximity to but spaced from code elements of said two different groups; and an electrically actuated control circuit, coupled to said sensing means, for controlling operation of said transfer mechanism in response to predetermined changes in the electrical properties of said sensing elements.
3,130,618	Apr. 28, 1964	Hydraulic Tool Holder	Albert W. Drantz	Norridge, Cook County, IL	Claim: A hydraulic tool holder comprising a pair of body members spaced apart to provide a space therebetween for seating a cutter block or the like, a first recess in one of said body members, a piston mounted in said recess for axial sliding movement therein, a second recess in one of said body members, clamping means mounted in said second recess for axial sliding movement therein between a clamping position wherein said means is adapted to engage a cutter block seated between said body members and an open position wherein said clamping means is retracted, connecting means for connecting said piston to said clamping means, spring means for biasing said clamping means toward clamping position, and hydraulic means associated with said piston for moving said clamping means to open position.
3,133,740	May. 19, 1964	Hydraulic Type Holder for Drill Chucks and the Like	Albert W. Drantz	Norridge, Cook County, IL	Claim: A hydraulic type holder for drill chucks and the like comprising, in combination, a generally tubular body, a generally tubular thin-walled shell telescoped within said body to form an annular chamber therebetween, means for conducting fluid under pressure to said chamber to compress said shell radially inwardly and thus permit frictional gripping of a member to be held therein.
3,168,322	Feb. 02, 1965	Chucking Device for Machine Tool Spindle and Tool Holder for E Therewith	Harry R. Dziedzic	Glenview, Cook County, IL	Claim: A chucking device adapted to be associated with a machine tool spindle for holding a tool or the like, comprising, in combination, a tool holder having a shank portion which is provided with at least one annular groove, an annular collet member adapted to be housed within a machine tool spindle so as to be held against forward axial movement and having internal rib means adapted to cooperate with said groove when said tool holder is inserted in said spindle, said collet member normally being expanded to a first position wherein said rib means is disposed radially outwardly of said groove so as to permit entry of said shank into said collet and being compressible upon application of force thereto to a second position wherein said rib is disposed within said groove to provide a positive axial lock between said shank and said collet, and means for applying force to said collet to move the same to said second position.
3,185,492	May. 25, 1965	Tool Holding Means	Harry R. Dziedzic	Chicago, Cook County, IL	Claim: Tool holding means for a tool having a surface portion tapered toward its axis, said tool holding means comprising a supporting base member, a fixed tool retaining member secured to said supporting base and adapted to engage the surface portion of the tool, movable tool retaining member movably supported on said base for pivotal movement toward open and closed positions and adapted to engage the surface portion of the tool, said movable and fixed tool retaining members having tapered surface portions adapted to mate with the tapered surface of the tool and urge said tool into engagement with said supporting base member, and latching means acting between said supporting base member and said movable tool retaining member to hold the latter in closed position, said latching means comprising a spring loaded plunger carried by one of said latter two members and a recess in the other of said latter two members.
3,246,933	Apr. 19, 1966	Way Bearing	Bernard R. Better	Chicago, Cook County, IL	Claim: A roller bearing construction comprising a bearing block including a race portion having a flat load surface, a pair of substantially parallel wall portions at opposite sides of said race portion having opposed inner faces normal to said load surface and extending outwardly relative to the race portion, an endless groove in each of said inner wall portion faces having a straight portion parallel to the load surface and another portion extending parallel to the opposite surface of the race portion and also having curved portions extending about the opposite ends of the race portion and connecting the ends of said straight portion and other portion of the groove, said grooves being in coincident relation transversely of said block, a plurality of bearing rollers disposed transversely between the wall portions in substantially parallel relation to each other and each having a radius corresponding to the spacing of said straight groove portions from the flat load sur-face, an axial recess in each end of each roller and a ball partially received in each said recess and guidedly engaging in the adjacent groove, the extent of said wall portions outwardly relative to said flat load surface of the race portion in the direction normal thereto being less than the roller diameter and the extent of the wall portions outwardly of said opposite surface being greater than the roller diameter.
3,251,604	May. 17, 1966	Hydraulic Chuck	Bernard R. Better	Chicago, Cook County, IL	Claim: For use with a hydraulic chuck of the type having a hydraulically actuated thin-walled shell which is radially flexed to provide frictional gripping of a member to be held, a pressure control system comprising, in combination, a hydraulic fluid passage leading to a chamber adjacent said thin-walled shell, said passage and chamber normally being substantially filled with hydraulic fluid, sealing means associated with said passage to provide a closed system including said passage and said chamber, said sealing means including piston means associated with said passage for controlling the pressure in said closed system, said piston means being movable to a first position to reduce the pressure in said closed system to an initial pressure which is insufficient to cause said shell to grip a member disposed therein and being movable to a second position to substantially increase the initial pressure in said closed system to a level which is sufficient to cause said shell to grip a member disposed therein, spring means arranged to act on one side of said piston means for moving said piston means to said second position to effect gripping of a member disposed in said shell, and means for moving said piston means against the force of said spring means to said first position to effect release of a member disposed in said shell.
3,301,082	Jan. 31, 1967	Ball Screw Mechanism	Joseph W. Kosinski	Riverside, Cook County, IL	Claim: A ball screw mechanism comprising, in combination a first member comprising a ball screw, a second member comprising a ball nut surrounding said ball screw, said first and second members having mating helical grooves to define helical passages therebetween for trains of balls for interconnecting said first and second members, a longitudinal slot in one of said first and second members disposed to face the other of said members and interrupt said helical passages, and a plurality of individual ball return inserts mounted in said longitudinal slot, said 'ball return inserts having complementary 'groove portions formed in opposite sides thereof and said inserts being arranged side-by-side in said slot whereby complementary groove portions in adjacent inserts will cooperate to define a crossover passage to connect opposite ends of a corresponding helical passage to provide a closed circuit for a train of balls.
3,341,262	Sep. 12, 1967	Recirculating Bearing	Joseph m Kalmanek	Cicero, Cook County, IL	Claim: In a recirculating way bearing, in combination, inner race means providing a continuous track, a plurality of rollers disposed on said track and movable around the same in substantially abutted relation to one another, said rollers being generally cylindrical and each having a reduced diameter central portion approximately midway between its ends, and an endless elastic tension band extending around the periphery of said track so as to overlie the reduced diameter central portions of said rollers and thereby maintain said rollers in close association with said track and in proper alignment thereon, said tension band being nonmetallic and highly flexible both radially and laterally.
3,393,577	Jul. 23, 1968	Pre-Loaded Ball Screw Assembly	Bernard R. Better	Chicago, Cook County, IL	Claim: In a ball screw assembly, the improvement comprising, in combination, a screw member, a pair of nut members mounted on said screw member and each interconnected therewith by at least one corresponding ball circuit, a housing, said nut members being disposed within said housing and in a predetermined rotary position on said screw member relative to one another to develop counteracting axial pre-load forces on said nut members urging the same in opposite directions relative to said screw member, one of said nut members being rigidly affixed to said housing and the other of said nut members being rotatably adjustable relative to said one nut member and said housing, and adjusting screw means carried by said housing and positioned for engagement with said other nut member for controlling the rotary position of said other nut member relative to said one nut member and said housing, said adjusting screw means being manually rotatable in small increments for varying said rotary position of said other nut member relative to said one nut member and said housing and thereby adjusting the magnitude of said pre-load forces in corresponding increments.
3,592,482	Jul. 13, 1971	Hydraulic Chuck	Bernard R. Better	Chicago, Cook County, IL	Abstract: A hydraulic type chuck or holder for receiving and driving a lobed shank of a tool or other operated part, the chuck having a sleeve which has a straight passage of lobed configuration and which is so formed as to have annularly spaced thick wall portions alternating with annularly spaced thinner deformable portions which can be expanded into gripping and centering engagement with the driven shank when fluid pressure is applied to fluid pressure chambers defined in part by the outer side of the shell. Claim: An expanding hydraulic type holder for an operated part comprising, a body having a central passage, a generally tubular shell having curved portions interfitting said passage, means for securing the shell to the body, said shell having a passage of irregular sectional contour, adapted to releasably receive and rotatably drive a noncircular contoured spindle of an operated part, said shell having annularly spaced thick wall portions alternating with annularly spaced thinner wall portions which are deformable by fluid pressure to grip the spindle of an operated part, and means for applying fluid pressure between the shell and the body to deform said shell.
		Hydraulic Chuck	Joseph W. Kosinski	Riverside, Cook County, IL
4,640,652	Feb. 03, 1987	Coolant Delivery System	Jeremias C. Rivera Jr.	Chicago, Cook County, IL	Abstract: A tap extension having a dual-mode coolant delivery system is disclosed which is adapted to connect a thread-cutting tap with an associated machine tool spindle having a pressurized coolant supply. The extension includes a generally elongated shank portion, with a locking arrangement provided at one end thereof for receiving and releasably retaining a tap in driven relation with the tap extension. Notably, the tap extension includes a valve arrangement whereby pressurized coolant is directed: (1) through the axial bore of a tap in a first mode of operation, or (2) exteriorly of a solid tap to between its cutting flutes in a second mode of operation. Versatile and efficient thread-forming in either blind holes or through holes is thus facilitated by use of the present construction.
4,976,013	Dec. 11, 1990	Rope-Tying Device and Method	Cyrus T. Wax	Skokie, Cook County, IL	Abstract: A rope-tying device is disclosed which facilitates convenient and efficient formation of a loop in the free end portion of a rope. Economical fabrication and efficient use of the device is facilitated by its configuration as a unitary, generally cylindrical tubular body formed from a single piece of material. The tubular defines a pair of diametrically opposed, longitudinally extending slots, with the body including a pair of annular end body portions, and a pair of diametrically opposed side body portions extending between the end body portions. For loop-formation, the free end portion of a rope is inserted through the device, and a half-loop displaced laterally through one of the slots. The free end of the rope is thereafter inserted through the half-loop, with tension exerted to complete loop-formation.