US860092A - Device for operating grindstones. - Google Patents

Device for operating grindstones. Download PDF

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Publication number
US860092A
US860092A US29442306A US1906294423A US860092A US 860092 A US860092 A US 860092A US 29442306 A US29442306 A US 29442306A US 1906294423 A US1906294423 A US 1906294423A US 860092 A US860092 A US 860092A
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United States
Prior art keywords
sills
operating
grindstones
notches
bars
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Expired - Lifetime
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US29442306A
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Thomas F Hopkins
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Individual
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    • 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
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/14—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of a driving or driven pulley

Definitions

  • This invention relates to grind stones and more particularly to foot power grind stones and has for its object to provide a stone which will be simple in arrangement and which may be produced at a comparatively low figure.
  • Another object is to provide a stone including an adjustable seat.
  • Figure l is a side elevation of the present invention.
  • Fig. 2 is a top plan view.
  • Fig. 3 is a longitudinal section on line 33 of Fig. 2.
  • Fig. 4 is a cross section on line 4-4 of Fig. 2.
  • the present invention comprises spaced parallel sills 5 disposed horizontally and connected at their rearward ends by means of a cross piece 6.
  • Downwardly divergent legs 7 are secured to the rearward ends of the sills and have a cross brace 8, upwardly and forwardly extending brace rods 9 being also secured to the legs 7 and to the sills.
  • a horizontal board 10 which is secured in position by transverse bolts 11 and this board extends forwardly beyond the sills and has secured to its forward end a supporting leg 12, this leg being connected with the rearward end of the board 10 by meansof a diagonal is journaled in the crank hanger and carries cranks 19 provided with pedals 20, and the crank shaft carries a sprocket 21.
  • a pair of notched bars 22 are secured horizontally upon the inner faces of the sills 5 and latch rods 23 are provided and are pivoted to the sills for movement into and out of position to close the notches, the latter being directed upwardly.
  • a grind stone 24 is disposed with the ends of its axles 25 in a pair of the notches of the bars, the notches of the two bars registering and the axle is arranged for interchangeable engagement in the several registering pairs of notches and may thus be shifted longitudinally of the sills.
  • the axle carries a sprocket wheel 26 which is connected with the sprocket wheel 21 by means of a chain 27, the bars 22 lying rearwardly of'the sprocket wheel 21, and the shifting of the axle thus results in variation of the tension of the chain.
  • the board 10 is longitudinally slotted, as shown at 28, and a clamping bolt 29 is slidably engaged in this slot and is engaged at its upper end in the nose 30 of a saddle 31 which rests upon the board.
  • the saddle is thus movable longitudinally of the board, as will be understood and the clamping bolt may be operated to hold it at different points of its movement.
  • a water tank 32 is located in position to discharge upon the stone 24.
  • a pair of spaced horizontal sills a horizontal bar secured to the inner face of each sill and having its 'upper edge provided with a series of notches, the notches of the two bars registering in pairs; a driving shaft located below the sills and forwardly of said bars; a sprocket wheel mounted upon said shaft, and pedals for operating it; a driven shaft adapted to carry a grindstone and having its opposite ends in interchangeable engagement in said notches; a sprocket wheel mounted on said THOMAS F. HOPKINS.

Description

PATENTBD JULY 16, 1907-.
v T. ,P. HOPKINS. DEVICE FOR orsmzrme GRINDSTONES.
A PPLIOATION FILED JAN. 3, 1906. Y
' S-BHBETB-SHEBT 1.
No. 860,092. PATENTED JULY 16, 1907.
- T. F. HOPKINS. DEVICE FOR OPERATING GRINDSTONES;
APPLICATION FILED JAN. 3, 1906.
2 SHEETS-311E212.
qWi'tMeo o ao 'THOMAS F. HOPKINS, OF PUXICO, MISSOURI.
DEVICE FOR OPERATING GRINDSTONES.
Specification of Letters Patent.
Patented July 16, 1907.
Application filed January 3, 1906. Serial No. 294,423.
To all whom it may concern:
Be it known that I, THOMAS F. Horxms, acitizen of the United States, residing at Puxico, in the county of Stoddard, State of Missouri, have invented certain new and useful Improvements in Devices for Operating Grindstoncs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to grind stones and more particularly to foot power grind stones and has for its object to provide a stone which will be simple in arrangement and which may be produced at a comparatively low figure.
Another object is to provide a stone including an adjustable seat.
Other objects and advantages will be apparent from the following description.
In the drawings forming a portion of this specification and in which like numerals of reference indicate similar parts in the several views, Figure l is a side elevation of the present invention. Fig. 2 is a top plan view. Fig. 3 is a longitudinal section on line 33 of Fig. 2. Fig. 4 is a cross section on line 4-4 of Fig. 2.
Referring now to the drawings, the present invention comprises spaced parallel sills 5 disposed horizontally and connected at their rearward ends by means of a cross piece 6. Downwardly divergent legs 7 are secured to the rearward ends of the sills and have a cross brace 8, upwardly and forwardly extending brace rods 9 being also secured to the legs 7 and to the sills. Between the forward ends of the sills, there is disposed a horizontal board 10 which is secured in position by transverse bolts 11 and this board extends forwardly beyond the sills and has secured to its forward end a supporting leg 12, this leg being connected with the rearward end of the board 10 by meansof a diagonal is journaled in the crank hanger and carries cranks 19 provided with pedals 20, and the crank shaft carries a sprocket 21.
A pair of notched bars 22 are secured horizontally upon the inner faces of the sills 5 and latch rods 23 are provided and are pivoted to the sills for movement into and out of position to close the notches, the latter being directed upwardly. A grind stone 24 is disposed with the ends of its axles 25 in a pair of the notches of the bars, the notches of the two bars registering and the axle is arranged for interchangeable engagement in the several registering pairs of notches and may thus be shifted longitudinally of the sills. The axle carries a sprocket wheel 26 which is connected with the sprocket wheel 21 by means of a chain 27, the bars 22 lying rearwardly of'the sprocket wheel 21, and the shifting of the axle thus results in variation of the tension of the chain.
The board 10 is longitudinally slotted, as shown at 28, and a clamping bolt 29 is slidably engaged in this slot and is engaged at its upper end in the nose 30 of a saddle 31 which rests upon the board. The saddle is thus movable longitudinally of the board, as will be understood and the clamping bolt may be operated to hold it at different points of its movement.
A water tank 32 is located in position to discharge upon the stone 24.
What is claimed is:
In combination, a pair of spaced horizontal sills; a horizontal bar secured to the inner face of each sill and having its 'upper edge provided with a series of notches, the notches of the two bars registering in pairs; a driving shaft located below the sills and forwardly of said bars; a sprocket wheel mounted upon said shaft, and pedals for operating it; a driven shaft adapted to carry a grindstone and having its opposite ends in interchangeable engagement in said notches; a sprocket wheel mounted on said THOMAS F. HOPKINS.
Witnesses ALBERT KELL, C. CLUBB.
US29442306A 1906-01-03 1906-01-03 Device for operating grindstones. Expired - Lifetime US860092A (en)

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US29442306A US860092A (en) 1906-01-03 1906-01-03 Device for operating grindstones.

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US29442306A US860092A (en) 1906-01-03 1906-01-03 Device for operating grindstones.

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US29442306A Expired - Lifetime US860092A (en) 1906-01-03 1906-01-03 Device for operating grindstones.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778233A (en) * 1954-07-06 1957-01-22 Turco Products Inc Power unit for supporting interchangeable power operated tools

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778233A (en) * 1954-07-06 1957-01-22 Turco Products Inc Power unit for supporting interchangeable power operated tools

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