Improvements in dental pluggers / [Harry Shoemaker].

  • Shoemaker, Harry.
Date:
1901
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in dental pluggers / [Harry Shoemaker]. Source: Wellcome Collection.

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    N° 8390 A .D. 1901 Date of Application, 23rd Apr., 1901—Accepted, 1st June, 1901 COMPLETE SPECIFICATION. Improvements in Dental Pluggers. We, Harry Shoemaker and Gustave Paul Behring, both of 13T South Fifth Street, Philadelphia, County of Philadelphia, and State of Pennsylvania, United States of America, Electrician and Medical Doctor, respectively, do hereby declare the nature of this invention and in what manner the same is to be performed, 5 to be particularly described and ascertained in and by the following statement: This invention relates to improvements in dental pluggers, and the object is to simplify and improve the construction, increase the efficiency, and reduce the cost of manufacture. In the accompanying drawings; 10 Figure 1 is an enlarged longitudinal section of the dental plugger embodying the invention. Figure 2 is a transverse section on line x-—x of Figure 1 looking in the direction of the arrow. Figure 3 is a similar view looking in opposite direction. 15 The numeral 1 denotes the hand-piece provided with the threaded heads or caps 2 and 3, each provided with aligned bearings for the axial shafting. 4 denotes the main shaft, whose projecting end is attached to the flexible shaft 5, of a dental engine. The inner end of the shaft has a bearing in the tubular shaft 6, loosely mounted, so as to have a limited longitudinal movement in the 20 head 3, and 7 is a spring actuated thumb brake, whose inner end extends through a slot 8, in the sleeve, and adapted to engage the main shaft and act as a friction brake, being normally held out of contact by the spring 9. 10 denotes a disk carried upon the inner end of the shaft 4, and provided with the loosely mounted ball hammers 12, so as to protrude upon both sides 25 of the disk. 13 is a cylindrical casing having a threaded cap 131, encompassing the disk, said casing being loosely mounted in the hand-piece. A helical spring 14 and a corresponding spring 15 occupy the space in the hand-piece upon both sides of the cylindrical casing; and the adjustment of these is such that normally the disk will revolve in the casing without coming in contact with 30 either of the casing’s ends. The inner faces of the casing are provided with the hemispherical anvils 16 and 17, in line with the hammers 12. By employ¬ ing three hammers and two anvils, in each end of the casing, a better result is obtained, as six positive longitudinal reciprocating impulses are imparted to the casing 13 and sleeve 6. A central tool c being fixed in fhe chuck end of the 35 sleeve 6, the hand-piece is grasped and when the point of the tool rests against the object, press forward so as to compress the spring 14, which bring the hammers in contact with the proper anvils and reciprocate the shaft and sleeve. A reverse pointed tool can be employed in this instrument, a pulling motion being imparted to cause the hammers to engage the proper anvils. 40 Having now particularly described and ascertained the nature of our said invention, and in what manner the same is to be performed, we declare that what we claim is:' 1. A dental plugger, comprising a hand-piece, a longitudinally reciprocating sleeve carried thereby, a spring actuated anvil case, fixed to said sleeve and 45 loosely mounted in said hand-piece, a driving shaft journaled in said sleeve, anvil [Price 8<r/.]