US1104747A - Tool-driving mechanism. - Google Patents

Description

J. M. THOMPSON.

TOOL DRIVING MECHANISM. APPLICATION FILED MAR.31,1910.

Patented- July 21,1914.

-UNITED OFFICE.

JAMES a. 'rfiomrsoiv, or MILWAUKEE, WISCONSIN, ASSIGNOR 'ro LUTHER BROS. co.,

or MILWAUKEE, WISCONSIN, A CORPORATION or WISCONSIN.

TOOL-DRIVING MECHANISM.

Specification of Letters Patent Patented July 21, 1914.

To all whom it may concern:

Be it known that I, JAMES M. THOMPSON, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of lVisconsin, have invented new and useful Improvements in ToolDrivin'g Mechanism, of which the following is a specification.

My invention relates to improvements in foot power driving mechanism for grinding wheels, boring tools, etc.

The object of my invention is to provide a form of construction in which the various tools may be adjusted in any desired position with reference to the operator, in accordance with 'the character of the work to be performed.

-A further object of my invention is to provide a form of construction which can be readily adjusted to suit the convenience of the operator, it being recognized that different operators require different adjustments.

In the following description, reference is had to the accompanying drawings, in which Figure 1 is a side elevation of my invention, showin the upper gear casing in section, and a so showing a grinding wheel mounted upon the driven shaft. Fig. 2 is a front elevation of the same, the upper casing being also shown in section. Fig. 3 is a detail side view of a modified seat suport. p Like parts are identified by the same reference characters in both views.

A standard 1, the upper portion of which is tubular, is provided with a supporting brace 2, having a cross piece 3 at its lower end, whereby the standard is supported-in a vertical position. The brace 2 is secured to the upper portion of the standard by clamping plates 5 .connected with each other in clamping position by bolts 6 and thumb ,nuts 7. Said plates comprise a pair of members formed with semi-cylindrical standard engaging portions to engage the standard and flat surfaced portions between which portions of the respective plates, the brace 2 is engaged. A seat supporting bar 8 is similarly secured to the standard by means of clamping plates 9, a single clamping bolt ldbeing employed to connect this late with the bar 8. The plates 9 are simiar to the plates 5 in form and arrangement. The bar 8 is also secured to the brace bar 2 by a member 12, which is movable longitudinally of the bar 2, and may,- if deslred, be clamped thereto in any position of ad'ustment, by means of suitable set screws or olts. The bar 8 extends beyond the brace bar 2 and is provided with a seat 13 of any ordinary type. A gear casin 15 is mounted upon t e standard 1,'from w ich it is supported by clamping plates 16, bolts 17 and nuts 18. Thesenuts are preferably thumb nuts, so that they can be readily adjusted to clamping or releasing position. The upper end of the standard 1 has a c lindrical outer surface, so that when tge nuts 18 are loosened, the casing 15 may be rotated upon the standard.

A shaft 21 is journaled in suitable bearings at 22 and 23 in the casin 15, and motion is transmitted to this sha t from pedal cranks 25, through the crank shaft 26, beveled gear wheel 27, pinion 28 vertical shaft 29, beveled gear wheel 30, and inion 31, the latter being fast on shaft 21. n the drawings, I have illustrated the shaft 21 as provided at one end with a grinding wheel 33 and at the other end with a drill 34. Both the grinding wheel and the drill are detachably connected with the shaft 21, so that they can be readily removed and other tools substituted therefor. In Fig. 1, I have illus trated a single rest 35 of ordinary type, removably connected with the casing 15 at 37. Tool rests of various descriptions, or other work holders, may be substituted for the single rest 35 in an obvious manner.

With the above described construction, it will be apparent that the seat supporting bar 8 may be raised or lowered to any desired height in accordance with the requirements of the user since it may be clamped to the brace and standard at any desired height. It may also be tilted at any desired angle by adjusting the clamping plates 9 vertically on the standard 1 without making a relative change in the position of the supporting members 12 on the brace bar 2. It will also be observed that the tubular portion of the standard 1 terminates immediately above the pinion 28, the standard slotted at 44 to permit the same to move 110 longitudinally, when the bolt 43 is loosened seat is not illustrated inthis. view but it will be understood that a seat similar to that illustrated in Fig. 1 may be employed, which is adjustable along the bar or bars 8 to suit the requirements of the operator.

Having thusdeseribedmy invention, what I claim as new, and desire to secure by Letters Patent, is

1. A foot power driving mechanism comprising a standard having a base portion adapted to rest upon the floor and provided with an upright tubular upper portion, a support having adjustable swivel connection with the upper portionof the standard, means for locking the same to the standard in any desired position of rotative adjustment, a

crank shaft journaled in said base and provided with foot pedals, a vertical shaft journaled in the tubular standard and provided with gear wheels at its upper and lower ends, a gear wheel on the crank shaft in mesh with the gear wheel on the vertical shaft, and a driven shaft provided with a .gear. wheel in mesh with the upper gear wheel on the vertical shaft and journaled in said support, said driven shaft being adapted for direct, connection of suitable tools therewith, and said tools being adapted to operate at any angle in a horizontal 'plane about said standard, by appropriate the upper portion of the standard, means for locking the same to the standard in any desired position of rotative adjustment, pedal and crank mechanism journaled in said base, a vertical shaft journaled in the tubular standard and driven from the pedal and crank mechanism, and a driven shaft operatively connectedwith the vertical shaft and journaled in said support, said driven shaft being adapted for direct connection of suitable tools therewith, together with a brace bar extending angularly from the upper portion of the standard to the floor, a seat bar adjustably connected with the brace bar, and a seat mounted on said seat bar.

' In testimony whereof I afiix my signature in the presence of two witnesses.

JAMES M. THOMPSON. Witnesses:

I. D. BREMER, LEVERETT C. WHEELER.

Images