US1011098A - Boring-machine. - Google Patents

Description

W. H. WASHBURN. BORING MACHINE.

APPLICATION FILED NOV. 19, 1909.

1,01 1,098, Patented Dec. 5, 1911.

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BORING MAGHINE.

APPLIUATION FILED NOV. 19, 1909.

1,01 1,098. Patented De0.5 ,19 11.

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UNITED BTATEB PATENT @FFIQE.

WILBUR H. WASHIBURN, OF WILDWOOD, NEW JERSEY.

BORING-MACHINE.

tonnes.

To all whom it may concern:

Be it known that I, VVILBUR H. WAsH- BURN, a citizen of the United States, residing at VVildwood, in the county of Cape May and State of New Jersey, have invented a certain new and useful Improvement in Boring-Machines, of which the following is a specification.

My invention relates to a new and useful improvement in boring machines, and has for its object to provide an exceedingly simple and effective device of this character whereby a number of holes may be bored simultaneously in any object.

A further object of the invention is to so construct a device of this character that one man may regulate the tension while operating the augers.

The device is especially adapted for use by electricians for boring holes in the studding or joists of buildings.

IVith these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, I will describe its construction in detail, referring by letter to the accompanying drawing forming a part of this specification, in which Figure 1 is a side elevation of my improved boring machine, portions thereof being broken away. Fig. 2, a view at right angles to Fig. 1, and Fig. 3, a plan view. Fig. 4:, a section at the line 50-51: of Fig. 2.

In carrying out my invention as here embodied, A represents a connecting member having two casings B and C with a groove guide D between them. With the casing O is formed the bearing E, having an extension a, on the outer end of which is formed the external threads I). With the casing B is formed the sleeve 0 which slides upon the extension or of the bearing E, said extension acting as a shaft upon which the casing B may turn.

cl represents a nut threaded upon the end of the extension (1. which holds the casing B against the shoulder formed by the guide D, said guide being formed integral with the bearing E. In the bearing E is journaled the shaft F, which carries a sprocket wheel G. This shaft extends beyond both Specification of Letters Patent.

Application filed November 19, 1909.

Patented Dec. 5, 1911.

Serial No. 528,909.

ends of the bearing and has detachably secured thereto the crank handles H.

In the casing B is slidably mounted the upright I and which is held in any desirable position in said casing by the thumb screw J, which passes through said casing, the inner end thereof binding against one face of the upright. In the adjacent casing O is also slidably mounted an upright K, and which is adjusted by the thumb screw J similar to the first described screw. To the upper end of this upright are secured the brackets L and M, each of which has two arms N, and these arms have formed therewith the stationary portion of a bearing 0. Between the arms N of each bracket L and M is placed a strip P, the ends of which have a half bearing Q, formed therewith, which are attached to the stationary bearing portions 0 and have journaledtherein the revoluble auger carriers R. In the center of these strips P is placed a stop S which may be adjusted within certain limits by a screw T or its equivalent which passes through one of the strips and bears upon the stop. To the rear of each of the auger carriers R is secured a'small sprocket wheel U and V, over which runs a chain W, said chain passing downward and around the sprocket wheel G. From this description it will be seen that by turning the cranks H the shaft F will be causing the auger carriers to do likewise through the medium of the sprocket wheels G, chain W and sprocket wheels U and V. This will operate the angers X which are held in the ends of the auger carriers R by a small bolt Y or its equivalent.

In the lower portion of the brackets L and M is slidably mounted the clamping member Z having oppositely extending arms A, the outer ends of which are provided with extensions B. This clamping member has a coil spring C wrapped around it, one end resting against the bracket L, the opposite end against the pin D, passing through the clamping member. This spring normally holds said clamping member outward, and in order that said outward movement may be limited a pin E is passed through the rear of said clamping member and is adapted to contact with the bracket M. With said bracket M are formed lugs F between which is journaled a pulley G.

H denotes a cable, one end of which is fastened to the clamping member Z, it then passes over the pulley G, downward over the guide D and through the eyelet I, its opposite end being secured to a suitable take up device here shown as consisting of a reel J, provided with a ratchet Wheel K, with which engages a dog L. This takeup device is mounted on the upper end of the foot piece h which is slidably secured to the upright I by the attaching members N.

The operation of the device is as follows :F or all ordinary heights the machine may be adjusted by sliding the upright I vertically in the casing B, by either letting out or taking up the cable H and the take up device, but for extraordinary heights the upright K may be moved vertically in the casing C by adding or removing portions of the chain IV. When the machine has been adjusted to the desired height it is placed against the object which is to be bored so that the clamping device Z rests on one side thereof and the ends of the augers rest upon the opposite side, then by turning the handles H and pressing upon the foot piece M the angers will be revolved and at the same time drawn toward the object being worked upon, so that holes may be readily bored therein.

When the device is to be used for boring holes in upright or vertical studding, or in some cases beneath the floor, the nut (Z is loosened and the head of the device or the upright K turned upon its center, which is the bearing E until the desired position is obtained, at which time the nut (Z is again tightened for holdingthe device in its adjusted position when the work may be carried on in the same manner as before described.

Of course I do not wish to be limited to the exact details of construction here shown, as these may be varied within the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described'my invention, what I claim as new and useful, is

1. In a device of the character described, a connecting member composed of two casings having a guide situated between them,

a bearing formed with said connecting member, a shaft journaled in said bearing having a sprocket wheel mounted thereon,

crank handles detachably secured to the ends, of the shaft, an upright slidably mounted in one of said casings, a thumb screw for holding it in its adjusted position, brackets secured to the upper end of said upright, said brackets having arms formed therewith, the ends of which carry half bearings, strips carrying half bearings secured to the first named bearings, auger carriers journaled in said bearings, sprocket wheels mounted on said carriers, a chain passing over said sprocket wheels and the first named sprocket wheel, a stop slidably mounted in the strips, means for holding it in its adjusted position, another upright slidably mounted in the adjacent casing, a thumb screw for holding it in its adjusted position, a foot piece slidably mounted thereon, a take-up device secured to said foot piece, a clamping member mounted in the brackets, a coil spring wrapped about said clamping member for normallyholding it outward, means for limiting its out-ward movement, lugs formed with one of said brackets, a pulley journaled between said lugs, and a cable secured to the clamping member and passing .over the pulley and guide and having its opposite end fastened to the take-up device.

2. In a boring machine va pair of uprights,

a connecting member in which are slidably mounted said uprights, said connecting member comprising a casing having a sleeve formed integral therewith, another casing, a threaded bearing formed therewith, said bearing adapted to enter the sleeve of the first named casing, a nut threaded on the end of said bearing, and agroove guide formed with the bearing and resting between the casings when said casingsare assembled.

In testimony whereof, I have hereunto aflixed my signature in the presence of two subscribing witnesses. I WILBUR H. VVAS'HBURN.

Witnesses:

"DAVID C. BAYLESS,- 'E. F. PIN ER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G.

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