US123886A - Improvement in drilling-machines - Google Patents

Improvement in drilling-machines Download PDF

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Publication number
US123886A
US123886A US123886DA US123886A US 123886 A US123886 A US 123886A US 123886D A US123886D A US 123886DA US 123886 A US123886 A US 123886A
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Prior art keywords
machines
improvement
spindle
gardam
drilling
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/06—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by man-power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0889—Path of movement of the finally actuated member
    • F16H2007/0893—Circular path

Definitions

  • Our invention relates to an improvement in drilling-machines; and it consists of the addition, to an adjustable belt-tightening device, of a screw-threaded extension to the axle of the tightening-pulley, as will hereinafter be more fully set forth.
  • FIG. l in the accompanying drawing, is a side view of our invention, and Fig. 2 is a rear view of the same.
  • the main frame a is provided with a bearing, a1, for the stem of the table h to work iu, said table being held at any desired height by the set ⁇ screw h.
  • the main frame is also provided with bearings a2 a3 at the upper part, which are in line with the bearing al. Between the bearings a2 a3 is placed the pulley d, which gives motion to the drill-spindle c, by means of a longitudinal groove in the spindle e and a pin or feather in the pulley d working therein, so the spindle c is free to move up or down.
  • the drill-spindle c is moved to or from the work on the table h by the hand-lever e, which is pivoted to the cap e1 on the top of the spindle c, and to two links, f and f', the other ends of the links being pivoted to the projection a4 from the main frame a, forming the fulcrum of the lever e.
  • the spring e2 fastened to the 1ever e and the main frame a, is to raise the drill-spindle o from the table h.
  • the two pulleys, g and g1 are for guiding the belt h onto the pulley d.
  • the drawing shows the position of the sliding bracket g2 when the belt h is being guided from a pulley beneath the table, to adjust it so as to run the machine from a pulley above.
  • the sliding bracket is placed in the hole shown by dotted lines at a5.
  • the guide-pulleys would then be in the position shown by the dotted lines h.
  • the spindle z, on which the guide-pulleys g and g1 are placed, is extended or lengthened, as Vshown at z', for the purpose of putting on polishing brushes, wheels, Ste.
  • the pulley g1 is fast to the spindle z, and consequently gives motion to it.
  • the other pullejT g turns loose on it.
  • the spindle z may be extended or lengthened on both sides of the machine.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Description

WILLIAM GARDAM 81,1. GARDAM. Sheets-'Sheen' Improvement in Drilling Machines. No. 123,8866. Patented Feb.20,1a72.
-114v evkovs,
n 2Sheets Sheet2 WILLIAM GARDAM 8L I. GARDAM. Improvement in DrIIIing Machines.
No. 123,8806. TMNT Pafe'ntedfeb. 2o, 1872.
gww Za/ww@ e l /MMZM UNITED STATES PATENT OEEICEo WILLIAM GARDAM AND JOSEPH GARDAM, OF WILLIAMSBURG, NEW YORK.
IMPROVEMENT IN DRlLLlNG-MACHINES.
Specication forming part of Letters Patent No. 123,886, dated February 20, 1872. I
' SPECIFICATION.
We, WILLIAM GAEDAM and JOSEPH GAE- DAM, of Williamsburg, county of Kings and State of N ew York, have invented certain new and useful Improvements in Drillin g-Machines, of which the following is a specication:
Our invention relates to an improvement in drilling-machines; and it consists of the addition, to an adjustable belt-tightening device, of a screw-threaded extension to the axle of the tightening-pulley, as will hereinafter be more fully set forth.
Figure l, in the accompanying drawing, is a side view of our invention, and Fig. 2 is a rear view of the same.
The main frame a is provided with a bearing, a1, for the stem of the table h to work iu, said table being held at any desired height by the set` screw h. The main frame is also provided with bearings a2 a3 at the upper part, which are in line with the bearing al. Between the bearings a2 a3 is placed the pulley d, which gives motion to the drill-spindle c, by means of a longitudinal groove in the spindle e and a pin or feather in the pulley d working therein, so the spindle c is free to move up or down. The drill-spindle c is moved to or from the work on the table h by the hand-lever e, which is pivoted to the cap e1 on the top of the spindle c, and to two links, f and f', the other ends of the links being pivoted to the projection a4 from the main frame a, forming the fulcrum of the lever e. The spring e2, fastened to the 1ever e and the main frame a, is to raise the drill-spindle o from the table h. The two pulleys, g and g1, are for guiding the belt h onto the pulley d. They are on the sliding bracket g2, which may be moved out to tighten the belt when it gets slack, and retained by the thumb-screw z'. The drawing shows the position of the sliding bracket g2 when the belt h is being guided from a pulley beneath the table, to adjust it so as to run the machine from a pulley above. The sliding bracket is placed in the hole shown by dotted lines at a5. The guide-pulleys would then be in the position shown by the dotted lines h. The spindle z, on which the guide-pulleys g and g1 are placed, is extended or lengthened, as Vshown at z', for the purpose of putting on polishing brushes, wheels, Ste. The pulley g1 is fast to the spindle z, and consequently gives motion to it. The other pullejT g turns loose on it. The spindle z may be extended or lengthened on both sides of the machine.
We claim as our inventionrIhe addition to an adjustable belt-tightening device of the screw-threaded extension to the axle of the tightening-pulley, as and for the purpose set forth.
WILLIAM GARDAM. JOSEPH GARDAM.
Witnesses W. HAUEF, E. F. KAsTENEUBER.
US123886D Improvement in drilling-machines Expired - Lifetime US123886A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756072A (en) * 1984-06-21 1988-07-12 Officina Meccanica Fratelli Falzoni S.R.L. Universal press to process and/or for the application of small items

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756072A (en) * 1984-06-21 1988-07-12 Officina Meccanica Fratelli Falzoni S.R.L. Universal press to process and/or for the application of small items

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