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Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
  • A61C1/08—Machine parts specially adapted for dentistry
  • A61C1/12—Angle hand-pieces
• • Y—GENERAL 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T279/00—Chucks or sockets
  • Y10T279/17—Socket type
  • Y10T279/17863—Shouldered-tang holding

Definitions

• Figure 1 represents a side elevation of an instrument embracingourimprovement.
• Fig. 2 a like view of the same except that the cap 0 has been removed in order to display the tumbler H, the crown wheelE and other parts and the hand-piece A and A has been broken away midway its length in order to show how the parts are jointed together by screw threads.
• Figs. 3 and 3 central sections of the same taken at right angles with the elevation of the machine as shown in Fig. 1, part of the hand piece being broken away;
• Fig. 4 a top view of the same as shown in Fig. 1;
• Fig. 5 a side View of the tumbler H;
• Fig. 6 an edge View of the same, and Fig.
• the catch D In the end of the case a is a groove which is wider at the bottom thereof than at the top, and the catch D has a corresponding formation, so that when placed in the groove it cannot move except endwise, and it is provided with a tooth D which may be forced into any one of the notches h of the tumbler, and thus confine the tumbler against turning together with the screws G in the openings for them in the case.
• the case is provided with a slot (1 through the edge of it just wide enough to allow the neck b when in position to revolve freely, but narrow enough to prevent any lateral motion of it, as shown in Fig. l.
• the said slot is provided with an enlargement as shown to enable the burr to be inserted, and after being inserted, and the tumbler turned, it becomes locked against accidental displacement in operation.
• the arbor f may be put in motion by any suitable means, and it is provided with the bevel gearF on its inner end adapted to mesh with the crown wheel E located as shown in Fig. 2 and turns the crown wheel, and this latter named wheel revolves the burr by means of the bevel gear I) on the end thereof.
• the stock of the burr is provided with a rounded projection 17" with the design of diminishing friction where it abuts against the case. It will be noticed that when the tooth D is inserted in any one of the notches hthe tumbler is locked against revolving.
• the tooth D of the catch is pretty clearly shown in Fig. 3 and the dove tail groove in the case a is shown in Figs. 1 and 2 and the broken lines and the solid lines in Fig. 2. show the burr in three different angles with the arbor f and it is manifest that by increasing the number of notches in the tumbler the number of the positions of the burr may be correspondingly increased.
• the hand piece A A is in two parts, as shown, in Fig. 2 the two parts being attached together by screw threads.
• the inner part A may be permanently attached to the case, but the outer end A may be of varying sizes to suit the exigency of the service required.
• the tumbler on each side is provided with a slight annular projection to correspond with corresponding depressions in the sides of the case and crown wheel but as the motion of the tumbler is scarcely a half revolution in extent these features are not important and need not be further described.
• the burr stock I suitably recessed for the burr and provided with gear b, the crown wheel E, and-the arbor or spindlef having its bevel gear F, the whole adapted to secure the rotation of the burr at three or more different angles with the arbor f, substantially as set forth.

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• Health & Medical Sciences (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Dentistry (AREA)
• Epidemiology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

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  • US US493289D patent/US493289A/en not_active Expired - Lifetime

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