US422648A

US422648A - Adjustable drill-frame

Info

Publication number: US422648A
Authority: US
Publication date: 1890-03-04
Anticipated expiration: 1907-03-04

Description

(No Model.)

W. SMITH.

ADJUSTABLE DRILL FRAME.

No. 422,648. Patented Mar. 4, 1890.

N PETERS. PhokbLithagnpher. Washingwn. D- C- UNITED STATES PATENT OFFICE.

WVILLIAM SMITH, OF BROOKLYN, NEWV YORK.

ADJUSTABLE DRlLL-FRAM E.

SPECIFICATION forming .part of Letters Patent No. 422,648, dated March 4, 1890. Application filed September 30,1889. Serial rojszaass. (No model.)

To aZZ whom it may concern.-

Be it known that I, VVILLIAM SMITH, a citizen of the United States, residing at Brooklyn,

the following is declared to be a full, clear,

and exact description thereof.

I11 the-laying of railroad-tracks and the joining up'of rails by the usual fish-plate it becomes frequently necessary to bore holes through the web of the rail. Especially is this the case where the ordinary length of rail has to be cut to fit in or join up'a length of track. These holes have heretofore been bored with an ordinary ratchet-drill held in place against the rail by a metal frame; but these frames have not been conveniently constructed or adjusted for the varying conditions and locations under which the same are to be employed.

My improvement consists in a drill-frame that is adjustable to the track in the varying conditions of use and is also adj nstable vertically to accommodate rails of diiferent height; and the same consists in hook-ended tension-bars to engage the rail, a sliding bracebar placed at right angles to the tension-bars, and two clip-pieces through which both the tension-bars and brace-bars pass. 1 These clippieces are held in place and their movement limited by L-shaped screw-bolts, and I provide an adjustable screw presser-bar movable upon the sliding brace-bar, said screw-bar being adapted to engage one end of the ratchetdrill and to press the same against the rail through which the hole is to be made.

In the drawings, Figure 1 is a plan of my improved device and part of a rail. Fig. 2 is an end view of the same. Fig. 3 is a crosssection at the line a: w of Fig. 1, the ratchetdrill being approximately shown in Fig. 3 by dotted lines; and Fig. 4 is a perspective view of one clip-piece.

, a a represent the hook-ended tension-bars. These bars are of bent form, as will be seen in Fig. 3, there being in each bar a straight portion 1, an angle or bend at 2, an inclined portion at 3, and a hooked end at 4, the bars passing beneath the railAat the inclined portion 3 and the hooked ends 4 being adapted to engage either the rail itself or the edge of the fish-plate. 'The bars a a maybe bent more or less, as desired; Their outer ends are supported upon blocks resting on the ground or in any other manner.

19 represents the sliding brace-bar placed at right angles to the bars a a, and c a represent the two-part clip-pieces, through the lower parts, of which the bars a pass, the brace-bar b passing through the upper portions, and said brace-bar b can slide through the upper portion of either clip-piece, and

either clip-piece slides lengthwise of the bars a a, thereby making the parts adjustable, so that the bars a a can be brought closer together or farther apart along the bar 1), as desired, and so that the bar I) can be located along the bars a a at any desired distances from the rail A. I prefer to make these clippieces a o with perforated lugs at 5, andI employ L-shaped screw-bolts or thu mb-screws d, which are adapted to pass through the perforations of the lugs 5 and engage the threaded holes in the bars a a, thereby'securing the clip-pieces c c and the brace-bar b at any desired position lengthwise on the bars a a.

I provide a sliding clip-piece 6 upon the brace -bar I), and the same has a lug at 6 and a clamping or thumb screw at 7, and through the upperportion of this sliding clip 6 is a screw presser-bar f with aloop wirehandle f, and the same is adjustable lengthwise in said clip 6. This screw presser-bar f is pointed and adapted to engage the cup-shaped seat provided in the end of a ratchet-drill, and said barf is employed to bring the drill in contact with the rail A, and may also be employed to feed the drill as the same penetrates the rail. I prefer to make one tensionbar a shorter than the other to effect a saving in material, and because the parts are interchangeable, it being possible to reverse the positions of the bars a a according to thelocation where the frame is employed, as there are locations in connection with curves on the tracks or the proximity of frogs or switches where it is desirable and perhaps necessary that one bar should be longer than the other, the shorter of the two bars being always long enough so that the frame can accommodate any ratchet-drill. The screw-bar f and clippiece 6 may notbe employed when an ordinary ratchet-drill is used, in which case the bearing will be directly against the edge of the barb.

In the position shown in Fig. 3 the rail A :supposed to be small, in which case it will be noticed that the inclined portion 3 does not lie parallel with the under side of the rail, but is below it. Should the rail A be large, the bars a a will be elevated, so as to bring the center of the screw-bar fin line with the center of the rail, and in this case the inclined portion 3 Will be parallel with and touch the under side of the rail.

My improved frame is not only adjustable for varying lengths of rails and for the vari ous conditions and locations of a track upon which the same would be employed, but can readily be taken to pieces and the bars a, a, and Z) laid parallel with each other, thereby compacting the article and lessening the space required in transporting the frame about from place to place.

, I claim as my invention- 1. The drill-frame composed of the hookended bars a a, the clip-pieces c 0', ad 3' ustably secured upon the bars a a, and the sliding brace-bar Z), passii'lg through the clippieces, substantially as set forth.

2. The drill-fra|ne composed of the hookended tension-bars a a, the sliding brace-bar b, the two-part clip-pieces c 0', their perforated lugs 5, the L-shaped screwbelts or thumb-screws d, and the screw-bar and a connection for adj ust-ably holding the barf to the brace-bar 11, substantially as set forth.

3. The drill-frame composed of the hookended tension-bars a a, the sliding brace-bar l), the two-part clip-pieces c 0, their perforated lugs 5, the L-shaped screw-bolts or thumb-screws d, and the adjustable screwbarf, the sliding clip (2, its lug 6,and thumbscrew 7, connected adjustably to the bracebar I), substantially as set forth.

4. The combination, with the slidingbrace bar b, the clip-pieces c c, and the screw-bolts 'd of the tension-bars a a each tension-bar having a straight portion at 1, a bent portion at 2, an inclined portion at 3, and hook end 4, substantially as set forth.

Signed by me this 25th day of September, 1889.

\VILLIAM SMITH.

Vitnesses:

Gmo. T. PINCKNEY, \VILLIAM G. err.