US725346A - Chuck. - Google Patents

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Publication number
US725346A
US725346A US68001698A US1898680016A US725346A US 725346 A US725346 A US 725346A US 68001698 A US68001698 A US 68001698A US 1898680016 A US1898680016 A US 1898680016A US 725346 A US725346 A US 725346A
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United States
Prior art keywords
casing
jaws
chuck
screw
braces
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US68001698A
Inventor
Philip F Krug
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Individual
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Priority to US68001698A priority Critical patent/US725346A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02Chucks
    • B23B31/10Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201Characterized by features relating primarily to remote control of the gripping means
    • B23B31/202Details of the jaws
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00Chucks or sockets
    • Y10T279/17Socket type
    • Y10T279/17411Spring biased jaws
    • Y10T279/17418Unitary
    • Y10T279/17427Split at one end only
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00Chucks or sockets
    • Y10T279/17Socket type
    • Y10T279/17411Spring biased jaws
    • Y10T279/17529Fixed cam and moving jaws
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00Chucks or sockets
    • Y10T279/19Radially reciprocating jaws
    • Y10T279/1953Toggle actuated

Definitions

  • My invention relates tochucks such as are thereby, to guard against slack and wear of the jaws and to compensate for the same, and also to construct ⁇ a split jaw the jaws of which are particularly adapted to be properly guided inward and outward within a proper casing forming part ofthe chuck.
  • Figure l is a central longitudinal section of a chuck constructed according to my invention, the jaws being open; Fig. 2, a cross-section along line 2 2 in Fig. 1; Fig. 3, a top View of the chuck, indicating in dotted lines the position of the interior parts when the jawsare closed while Fig. 4 is a ground plan of the key for actuating the chuck, showing its position when the jaws are open.
  • FIG. 5 showing a longitudinal section of the chuck-casing without the jaws; Fig. 6, a cross-section along line 6 6 in Fig. 5 with split jaws inserted, the chuck being open; Fig. 7, a top view of Fig. 5; Fig. 8, a longi- In Figs. 5 to 9, inclusive1 an-A tudinalsection ofvsuch split jaws, and Fig.
  • FIG. 9 a cross-section along line 9 9 in Fig. 8.
  • the .chuck illustrated lin Figs. 10 and 11 appears appliedtoa lathe,-Fig.,10 being a longitudinal vertical section with the jaws ⁇ closed, and Fig-11 a cross-sectionalong line 11 11 in Fig.A 10.
  • Fig. -12 is a longitudinalsection of wheel for operating the same, and Fig 15 a cross-section along line 15 15 in Fig. 14.
  • 20 represents the casing of a chuck.
  • the same incloses a series of jaws 21 2l, usually three or four, which when forced toward each other are adapted to Iirmly grip and hold an article of proper size inserted between the same.
  • 22 is a second casing adapted to slide within casing 20, pins 23 being inserted in contact with both said-casings to ⁇ prevent their revolving with reference toeach other.
  • Jaws 21 are adapted to slide inward and outward within proper channels'24 in casing 22.
  • 25 is astud on inner casing 22, and 26 a bushing around the same attached to outer casing and-having its perforation placed eccentrically with reference to said stud.
  • 27 is a key, circular in ⁇ crosssection, fitting over said stud and being adapted to so engage with said walls of the bushing'as to compel longitudinal movement of stud 25,and with it of casing 22, along casing 2O when said key is being turned one hundred and eighty degrees.
  • 28 is a nut screw-threaded exteriorly, so as to engage with the end of casing 22 for the purpose of confining the jaws longitudinally.
  • 29 represents C-shaped springs ⁇ placed in proper grooves in the ends of the jaws for the purpose of forcing the same outward when the chuck is to be opened.
  • braces'31 where they contact with screw-plugs 30 are made semispherical, as described above, not only for the purpose of permitting the screwing in and out-of said screw-plugs without affecting the positions of said braces, but also to avoid binding of the parts while the chuck is being opened and closed.
  • a further important advantage gained by making the ends of braces 31 semispherical instead of semicylindrical, as usually done, consists in the possibility thus offered to let screw-plugs 30 rest directly upon the outer ends of said braces, thus doing away with the necessity of employing an intermediate piece in adjusting said braces by means of said screw-plugs.
  • 32 represents interior screw-thread on casing 22 for attaching the chuck to a lathe.
  • Figs. 5 to 9, inclusive differs more particularly from the one above described with reference to the means for opening and closing the chuck, the casing22', which carries the jaws, in this case being revolubly mounted upon casing 20', 33 being a stud inserted in casing 22 and permitted to travel within slot 34 in casing 20, whereby the extreme limit of relative revolution of one casing with reference to the other is fixed and their longitudinal displacement prevented.
  • Key 27 is provided forproducing such revolving motion.
  • the same fits into a socket 35 on casing 22 and has a cam 3G, constructed like the tooth of a conical wheel, engaging with a proper recess 37 on casing 20'.
  • This form of chuck is particularly adapted to be used in connection with split jaws, as 38, (illustrated in Figs. 8 and 9,) which split jaws are shown here to be provided with the usual tubular shank S and with spring-jaws j, each of which has two parallel sides d, adapted to slide along proper slots in casing 22 as said casing is being revolved with reference to casing 20.
  • the outer surface of jaws 7' are recessed, as referred to above, for receiving the ends of braces 31.
  • Said braces form toggle-joints with casing 20 and jaws 3S, they rocking in this case, however, in a plane at right angles to the axis of the chuck.
  • Chucks as illustrated in Figs. 10 and ll are actuated by a forking lever, as 39, such lever being fulcrumed to the frame 40 of the lathe.
  • 41 is an independent split ring let into a groove on outer casing 20 and provided with two studs with which the prongs 42 of said lever engage in usual manner, so as to permit of opening and closing the chuck while the lathe is revolving.
  • 43 43 are locknuts on screw-plugs 30, and 44 is a nut on inner casing 22", serving as an additional guide for casing 20".
  • Braces 3l can be made accessible by detaching nut 44.
  • 21 represents the jaws, 23 pins for confining the casings in contact with each other, and 31 braces with semispherical ends inserted between jaws 21 and screw-plugs 30.
  • the chuck illustrated in Figs. 12 and 13 may be opened and closed simply by moving tu be 45,which is attached to inner casing 22X, longitudinally, so as to make said casing slide along outer casing 20X, which carries screwplugs 30X.
  • 21X represents the jaws, 23 pins for confining casings 20 and 22X in contact with each other, and 31 braces with semispherical ends inserted between jaws 21 and screw-plugs 30X, while 32X indicates interior j screw-thread on casing 20X.
  • a hand-wheel 46 is employed to produce relative longitudinal displacement of outer casing 20 and inner casing 22.
  • said wheel is provided with a iiange 47, resting against a nut 48, screwed to the eXterior surface of casing 20 to guard againstits longitudinal displacement and is also provided with interior screw-thread 49, engaging with corresponding screw-thread on the outer surface of casing 22, whereby when said hand-wheel is being revolved braces 31 will be either brought into the tilting positions shown in Fig. 14 or will be brought into approximately vertical positions corresponding with a closed condition of the chuck.
  • 21 represents the jaws, 23 pins for confining the casings in contact with each other, and 30 screw-plugs bearing against braces 31.
  • the combination with a casing, of a split jaw comprising a solid shank and jaws having guiding-surfaces adapted to slide along proper guiding-surfaces in the casing, and braces interposed between' said casing and said jaws and forming toggle-joints 5.
  • the combination with a casing, of a split jaw comprising a solid shank land jaws having guiding-surfaces adapted to slide along corresponding guiding-surfaces in the casing, braces interposed between said casing and said jaws and forming togglejoints therewith, and means for revolving the casing with reference to the jaw.

Description

No'. 725,346. PATBNTBD APR.14,'1903."
P. F. KRUG.
CHUCK.
APPLlOATION FILED MAY 7, 1898.
NQMODEL. 3 SHEETS-SHEET 1.
"" x x "im /d/ ATTORNEY.-
PATENTED APR. 14, 1903.
P. P. KRUG.
CHUCK.
APPLIOATION FILED MAY 7. 189s.
3 SHEETS-SHEET 2,
H0 MODEL WITNESSES:
PATENTED APR. 14, 1903.
P. P. KRUG.
CHUCK.
APPLIOATION FILED un 7, 189s.
' 3 SHEETS-SHEET 3- I IO MODEL.
INVENTOR vFJFICE.
PHILIP F. KRUG, OF NEW YORK, N. Y.
CHUCK.
SPECIFICATION forming part of Letters Patent No. 725,346, dated April 14, 1903. Application filed May 7, 1898. Serial No. 680,016. (No model.)
To all whom it may concern..-
Beit known that I, PHILIP F. KRUG, a citizen of the United States, anda resident of the city of New York, county and Stateof New,
York, have invented certain new and useful Improvements in Chucks, of which the following is a specification.
My invention relates tochucks such as are thereby, to guard against slack and wear of the jaws and to compensate for the same, and also to construct` a split jaw the jaws of which are particularly adapted to be properly guided inward and outward within a proper casing forming part ofthe chuck.
I accomplish these and other useful objects in the manner and by the means hereinafter described, and set forth moreparticularlyin the claims. 1
In the accompanying drawings, forming part of this specication, and wherein' corresponding characters of reference refer to corresponding parts, Figure l is a central longitudinal section of a chuck constructed according to my invention, the jaws being open; Fig. 2, a cross-section along line 2 2 in Fig. 1; Fig. 3, a top View of the chuck, indicating in dotted lines the position of the interior parts when the jawsare closed while Fig. 4 is a ground plan of the key for actuating the chuck, showing its position when the jaws are open.
other form of my improved chuck is illustrated, Fig. 5 showing a longitudinal section of the chuck-casing without the jaws; Fig. 6, a cross-section along line 6 6 in Fig. 5 with split jaws inserted, the chuck being open; Fig. 7, a top view of Fig. 5; Fig. 8, a longi- In Figs. 5 to 9, inclusive1 an-A tudinalsection ofvsuch split jaws, and Fig.
9 a cross-section along line 9 9 in Fig. 8. The .chuck illustrated lin Figs. 10 and 11 appears appliedtoa lathe,-Fig.,10 being a longitudinal vertical section with the jaws` closed, and Fig-11 a cross-sectionalong line 11 11 in Fig.A 10. Fig. -12 is a longitudinalsection of wheel for operating the same, and Fig 15 a cross-section along line 15 15 in Fig. 14.
Referring rst to Figs. 1 to 4, inclusive, 20 represents the casing of a chuck. The same incloses a series of jaws 21 2l, usually three or four, which when forced toward each other are adapted to Iirmly grip and hold an article of proper size inserted between the same. 22 is a second casing adapted to slide within casing 20, pins 23 being inserted in contact with both said-casings to `prevent their revolving with reference toeach other. Jaws 21 are adapted to slide inward and outward within proper channels'24 in casing 22. 25 is astud on inner casing 22, and 26 a bushing around the same attached to outer casing and-having its perforation placed eccentrically with reference to said stud. 27 is a key, circular in` crosssection, fitting over said stud and being adapted to so engage with said walls of the bushing'as to compel longitudinal movement of stud 25,and with it of casing 22, along casing 2O when said key is being turned one hundred and eighty degrees. 28 is a nut screw-threaded exteriorly, so as to engage with the end of casing 22 for the purpose of confining the jaws longitudinally. 29 represents C-shaped springs `placed in proper grooves in the ends of the jaws for the purpose of forcing the same outward when the chuck is to be opened. SOVrepresents screwplugs inserted in the walls of casing 2O opposite the central portions of the jaws, and 31 braces provided with ends of semispherical configurations, so inserted in corresponding recesses in said screw-plugs and said jaws that when stud or thorn occupies the position shown in Fig. 3 said braces will occupy radial positions substantially at right angles to the outer surfaces of the jaws, whereby IOO It will be seen that braces 31, in conjunction with casings 20 and jaws 21, form togglejoints, the action of which is very prompt and positive after their proper adjustment has been obtained by means of screw-plugs 30. The ends of braces'31 where they contact with screw-plugs 30 are made semispherical, as described above, not only for the purpose of permitting the screwing in and out-of said screw-plugs without affecting the positions of said braces, but also to avoid binding of the parts while the chuck is being opened and closed. A further important advantage gained by making the ends of braces 31 semispherical instead of semicylindrical, as usually done, consists in the possibility thus offered to let screw-plugs 30 rest directly upon the outer ends of said braces, thus doing away with the necessity of employing an intermediate piece in adjusting said braces by means of said screw-plugs. 32 represents interior screw-thread on casing 22 for attaching the chuck to a lathe.
The construction illustrated in Figs. 5 to 9, inclusive, differs more particularly from the one above described with reference to the means for opening and closing the chuck, the casing22', which carries the jaws, in this case being revolubly mounted upon casing 20', 33 being a stud inserted in casing 22 and permitted to travel within slot 34 in casing 20, whereby the extreme limit of relative revolution of one casing with reference to the other is fixed and their longitudinal displacement prevented. Key 27 is provided forproducing such revolving motion. The same fits into a socket 35 on casing 22 and has a cam 3G, constructed like the tooth of a conical wheel, engaging with a proper recess 37 on casing 20'. This form of chuck is particularly adapted to be used in connection with split jaws, as 38, (illustrated in Figs. 8 and 9,) which split jaws are shown here to be provided with the usual tubular shank S and with spring-jaws j, each of which has two parallel sides d, adapted to slide along proper slots in casing 22 as said casing is being revolved with reference to casing 20. The outer surface of jaws 7' are recessed, as referred to above, for receiving the ends of braces 31. Said braces form toggle-joints with casing 20 and jaws 3S, they rocking in this case, however, in a plane at right angles to the axis of the chuck.
Chucks as illustrated in Figs. 10 and ll are actuated by a forking lever, as 39, such lever being fulcrumed to the frame 40 of the lathe. 41 is an independent split ring let into a groove on outer casing 20 and provided with two studs with which the prongs 42 of said lever engage in usual manner, so as to permit of opening and closing the chuck while the lathe is revolving. 43 43 are locknuts on screw- plugs 30, and 44 is a nut on inner casing 22", serving as an additional guide for casing 20". Braces 3l can be made accessible by detaching nut 44. 21 represents the jaws, 23 pins for confining the casings in contact with each other, and 31 braces with semispherical ends inserted between jaws 21 and screw-plugs 30.
The chuck illustrated in Figs. 12 and 13 may be opened and closed simply by moving tu be 45,which is attached to inner casing 22X, longitudinally, so as to make said casing slide along outer casing 20X, which carries screwplugs 30X. 21X represents the jaws, 23 pins for confining casings 20 and 22X in contact with each other, and 31 braces with semispherical ends inserted between jaws 21 and screw-plugs 30X, while 32X indicates interior j screw-thread on casing 20X.
In the chuck illustrated in Figs. 14 and l5 a hand-wheel 46 is employed to produce relative longitudinal displacement of outer casing 20 and inner casing 22. For such purpose said wheel is provided with a iiange 47, resting against a nut 48, screwed to the eXterior surface of casing 20 to guard againstits longitudinal displacement and is also provided with interior screw-thread 49, engaging with corresponding screw-thread on the outer surface of casing 22, whereby when said hand-wheel is being revolved braces 31 will be either brought into the tilting positions shown in Fig. 14 or will be brought into approximately vertical positions corresponding with a closed condition of the chuck. 21 represents the jaws, 23 pins for confining the casings in contact with each other, and 30 screw-plugs bearing against braces 31.
I do not wish to confine myself to the detail constructions and combinations herein described, as it will readily be seen that the same might be varied without departing from the spirit of my invention.
I claim as new and' desire to secure by Letters Patent 1. In a chuck, the combination with acasing of jaws movable with reference thereto, screw-plugs inserted in the casing, and braces interposed between and held in immediate contact with said screw-plugs and said jaws adapted to form toggle-joints therewith, and provided with contact-surfaces in the form of portions of a sphere.
2. In a chuck, the combination with a casing of screw-plugs inserted in the saine, jaws movable with reference to said plugs, and braces interposed between said screw-plugs and said jaws adapted to-form toggle-joints therewith and provided with contact-surfaces in the form of portions of a sphere.
3. In a chuck, the combination with a casing of spring-actuated jaws, screw-plugs inserted in the casing and braces interposed between said screw-plugs and said jaws and IOO IIO
adapted to form toggle-joints therewith and` provided with contact-surfaces in the` form of portions of a sphere.
4. In a chuck, the combination with a casing, of a split jaw comprising a solid shank and jaws having guiding-surfaces adapted to slide along proper guiding-surfaces in the casing, and braces interposed between' said casing and said jaws and forming toggle-joints 5. In a chuck, the combination with a casing, of a split jaw comprising a solid shank land jaws having guiding-surfaces adapted to slide along corresponding guiding-surfaces in the casing, braces interposed between said casing and said jaws and forming togglejoints therewith, and means for revolving the casing with reference to the jaw.
May, 1898.
PHILIP F. KRUG.
Witnesses:
CEAS. L. HORACK, WM. J. PARSONS.
'presence of'two witnesses, this 5th day of 3o
US68001698A 1898-05-07 1898-05-07 Chuck. Expired - Lifetime US725346A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420067A (en) * 1943-11-01 1947-05-06 Harold E Crozier Collet attachment for lathes or other metalworking machines
US2442668A (en) * 1946-01-11 1948-06-01 Walter L Stace Chuck
US2535106A (en) * 1946-10-10 1950-12-26 Vidal Eileen Mavis Self-centering chuck
US2551226A (en) * 1951-05-01 Hydraulic collet chuck
US2683042A (en) * 1952-07-11 1954-07-06 John C Bender Collet fixture
US2824745A (en) * 1953-08-07 1958-02-25 Tom L Cahoe Magnetic chuck
US2893291A (en) * 1956-07-20 1959-07-07 Morey Machinery Co Inc Draw toggles for spindle male tapers of milling and the like machines
US5348319A (en) * 1993-06-25 1994-09-20 Ryobi Motor Products Corporation Chuck utilizing cam
US20030127810A1 (en) * 2001-01-19 2003-07-10 Arturo Meza Powered turntable with universal, self-adjusting chuck for holding auto wheels and the like for polishing

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551226A (en) * 1951-05-01 Hydraulic collet chuck
US2420067A (en) * 1943-11-01 1947-05-06 Harold E Crozier Collet attachment for lathes or other metalworking machines
US2442668A (en) * 1946-01-11 1948-06-01 Walter L Stace Chuck
US2535106A (en) * 1946-10-10 1950-12-26 Vidal Eileen Mavis Self-centering chuck
US2683042A (en) * 1952-07-11 1954-07-06 John C Bender Collet fixture
US2824745A (en) * 1953-08-07 1958-02-25 Tom L Cahoe Magnetic chuck
US2893291A (en) * 1956-07-20 1959-07-07 Morey Machinery Co Inc Draw toggles for spindle male tapers of milling and the like machines
US5348319A (en) * 1993-06-25 1994-09-20 Ryobi Motor Products Corporation Chuck utilizing cam
US20030127810A1 (en) * 2001-01-19 2003-07-10 Arturo Meza Powered turntable with universal, self-adjusting chuck for holding auto wheels and the like for polishing
US6916026B2 (en) * 2001-01-19 2005-07-12 Arturo Meza Powered turntable with universal, self-adjusting chuck for holding auto wheels and the like for polishing

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