US562005A - William hartill law - Google Patents

Description

(No Model.)

W. H. LAW.

TRAVBLING SWING. DRILL.

Patented June 16, 1896.

l'fl/l'messes NTTED STATES PATENT Grinch,

VILLIAM I-IARTILL LAW, OF PETERBOROUGH, CANADA.

TRAVELIVNG SWING-DRILL.

SPECIFICATION forming part of Letters Patent No. 562,005, dated June 16, 1896.

Application filed July 12,'1895.

.T0 LZZ wiz/07% t 11i/ay concern:

Be it known that I, WILLIAM HARTILL LAW, manufacturer, of the town of Peterborough, in the county of Peterboroughjn the Province of Ontario, Canada, have invented certain new and useful Improvements in Traveling Swing- Drills, of which the following is a specification.

My invention relates to improvements in traveling swing-drills and reaming-machines, and the object of the invention is to design a machine of this class which may be operated over a wide range of floor-space to accomplish more particularly the drilling and reaming of constructional ironwork; and it consists, essentially, of a vertical column journaled at the top and bottom in suitable frames adjusted longitudinally on guiding rails, the column being provided with an arm and drill and operating mechanism of peculiar construction adjustable thereupon, and the drill being driven throughthe column by a peculiarly-arran ged drive, as hereinafter more particularly explained.

Figure l is a perspective view of a machine constructed in accordance with my invention, portion of the drive being shown diagrammatically. Fig. 2 is a vertical section through the drill-spindles. Fig. 3 is a cross-section through the top carriage. Fig. 4 is a crosssection showing horizontal shaft in part and bevel-pinion.

In the drawings like letters of reference indicate corresponding parts in each figure.

A is a hollow column, Athe lower end of which has a bearing-spindle or pivot A secured in it which is journaled in suitable bearings B, secured at the top and bot-tom of the carriage (l, which is formed in the following simple manner:

O are channel-irons, the open side being innermost.

C2 is the top plate, which is suitably riveted to the top of the channel-irons.

C3 are cross-plates suitably riveted to the bottom of the channel-iron.

O4 are the double-flanged wheels, which are journaled in suitable bearings C5, secured to the bottom of the channel-iron. The wheels C'l are supported and run upon a track D, which may extend any distance desired.

c is a gear-wheel secured on the spindle of one of the wheels C4.

Serial No. 555,781. (No model.)

c is an intermediate gear-pinion journaled in bearings C2, secured at the top of the plate C2 and meshing with the gear-wheel c.

,c3 is a pinion suitably journaled in the bracket c2 and meshing with the gear-pinion c.

c4 is a crank-handle secured on the end of the spindle of the pinionpcs. By turning the crank-handle c4 it will be readily understood that the carriage C may be moved along the track in either direction, so as to bring the column with its appurtenances to any desired position on the floor.

The column A has the main driving-shaft E extending through its upper portion, and the upper end of the shaft extends into a sleeve F, attached to or forming partof the carriage G, which is provided with end rollers g, as shown. The rollers g are designed to have a rolling contact with the guiding-rails II H, which are secured to the timbers II', secured to the roof. Bymeans of the carriage G, rollers g, and rails II at the top and the carriage at the bottom of the column A such column is maintained in an upright position during 4its longitudinal movement along the track.

The' top of the shaft E has a cup-shaped recess e, within whichiit the bronze disks e. The recess e serves as a reservoir for oil, so as to keep the step always submerged in a lubricant. The spindle g' is screwed into and extends through the end of the sleeve F, the inner end of it being arranged to abut the bronze disks e. This arrangement effectually reduces to a minimum the friction at this end caused by the turning of the shaft E.

I is a bevel-pinion secured to the shaft E beneath the sleeve F. The bevel-pinion I meshes with the bevel-pinion J, secured on the spindle j, having bearings in the bracket f and sleeve F. The pulley J is secured on the outer end of the spindle The shaft E is driven as follows:

K is an idler-pulley journaled on a spindle k, having bearings at the bottom of the bracket K', attached to or forming part of the car- IOO the pulley K to and over the pulley Z3, down to the weighted pulley Z2 up to and over the idler-pulleys l', and back te the pulley L. The rope Z is intermediatelybroken away to indicate the extreme length of the same, and the idler-pulleys are suitably journaled in bearin g-brackcts attached to different portions of the roof. The rope Z, hereinbefore described, is, it will be seen, endless. lt will also be seen that the same conditions exist at the driven pulley J', whatever may be the dist-ance of the column of the drill from the driving-pulley; also the tension on the rope can be maintained the same at all times, or changed, if desired, when light or heavy work is being d one. There are other methods of drive which may be devised to use the same principle which I have described; but I prefer the form shown.

At the bott-om of the shaft E is a suitable steel spindle resting on the adjustable step e3, which is screwed into a bearing e4, secured in the wheel-chamber of the column A. By this means the friction at this end of the shaft is reduced to a minimum, and the shaft is also provided with lneans for taking up the wear. The column is formed with a wheel-chamber A2, having a back plate c.

M M is a double arm consistin g of two channel-bars which extend outwardly from the column at right angles to it and is suitably secured to a lug a', formed on the column. The arm is supported at the outer end by a diagonal brace N, extending from a socket d2 near the top of the column' to a socket m, forming part of the bracket m', connecting the outer ends of the channel-bars.

O is an arc-shaped yoke spanning the wheelchamber in the column A and connected to lugs A3, formed on the column.

- P is a strut extending outwardly from the yoke C), and Q is a truss-rod through which the strut extends intermediatcly and which is secured to suitable lugs formed on the column near the top and bottom.

Q is a suitable balance-weight on the overhanging end oi' the strut P.

The truss-rod Q is designed to relieve the column of the bending strain produced by the load of the arm and drill, and the weight Q' serves to counterbalance this load.

lVhen the arm of the machineis in the same plane as the two carriages, there is no pressure against the top guiding-rails; but the machine is sustained in this position by the bottom carriage, this being of such a length that the center of gravity of the drill is at all times between the end rollers and the column of the machine. Upon swinging the arm around in either direction the rollers g take a bearing against one or other of rails H, the maximum bearing being obtained when the arm is at right angles to the carriages and the drill-frame hereinafter described at the extreme end of the arm.

'Upon the lower end of the shaft E, I secure a bevel-pinion R, which Vmeshes with the bevel-pinion S, secured on the end of the shaft S', which is journaled at one end in bearings s, attached to or forming part of the front of the intermediate wheel chamber formed in the column. The other end of the shaft S is journaled in the bearing-bracket on'. The shaft S is located centrally over the space between the channel irons lvl. The shaft S has a key-slot s2 extending throughout its length.

s3 is a bevel-pinion, which is secured on the end oi' a sleeve s', which is j ournaled in the bearing U2, forming part of the frame U.

s* is a feather-key, which is secured in the sleeve s and is adapted to slide within a keyslot s2. The bevel-pinion s3 is maintained in a stationary position in relation to the frame U by means of the collar s", secured to the opposite end of the sleeve s. (See Fig. 2*.) The pinion meshes with the bevel-geartat the upper end of the hollow spindle T. The hub of the bevel-gear 1f extends through the frame U and has a collar t7 on its lower end to'keep it in proper relative position te the pinion The Idrill-1";.ra1ne U is supported upon the wheels fu, which are arranged in pairs, one at each side of the shaft S, and are designed to roll upon the tops of the channelirons M. The hollowr spindle T extends up into the hub of the bevel-pinion t.

A key-slot t is made in the hollow spindle T, in which slides a feather-key t2, fitted into the inside of the hub of the bevel-gear t. The key-slot t and key t2 are designed to permit of a free upward movement of the telescopic spindle within the bevel-gear and yet connect them together. as to rotation.-

t3 is a sleeve adjustably held on Vthe spinl dle T by collars t".

t5 are the trunnions formed on the sleeve if", as shown. v

V is a divided lever, the divided ends V l being pivoted at each side upon the trunnions 5, forming part of the sleeve i. The inner ends `V of the lever V have their iulcrum l upon the links e, pivotally connected to the lugs a', forming part of the drill-frame U.

`Adjustable weights V2 are provided at the ends V/ of the lever V, and the ends oll the lever are separated sufficiently so as to straddle the column when it is necessary to bring the carriage close to it. It will new be seen that the drill may be readily raised or lowered, as desired, by the lever V.

XV is a drill-spindle extending into the spindle T, and X is a chuck which iits over the bottom end of the outer spindle T.

is a key which extends through a slot 15"', made in the hollow spindle T, into a key-slot fw, made in the spindle lV. The outer edge of the key is beveled, and the chuck X has an internal recess se of a corresponding bevel. The chuck X is pushed up, so as to enable the key to be inserted in the slot t, and when the chuck is brought down again the key is securely wedged between the back of the recess af and the inside ot' the key-slot Z0. The

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tendency when any upward pressure is exerted upon the spindle W is to still more securely bind together the wedging-blook fr, chuck: X, outer spindle T, and spindle WV, and thereby prevent such latter spindle from ascending. By this means a longer range of adjustment is provided, and the heavier the work the greater the resistance or the frictional hold on the spindle WV. The tool Y is secured within the end of the drill-spindle W in a similar manner. It has a slot y made in it, and a key w' is provided with a beveled outer edge, as shown. The means of holding the tool Y, above described, is provided for its being readily released with the least possible labor, andthe driving is positive and without any slip. A chuck @U2 is also provided having a recess w3 with a corresponding bevel, and the tendency of the drill when at work is to be still more securely held within the holdingspindle.

The lever V, hereinbefore described, is utilized to lower the tool to or raise it from its work, and it may be also utilized to move the drill longitudinally on the arm, the carriage U serving to provide for the easy movement of the drill into any desired position. The

weights V2 serve to counterbalance the drill and the spindles.

In a machine constructed as above described a workman is enabled to drill or ream a hole at any point within a circle equal to twice the length of the arm formed of the channel-irons M. As the machine may travel to any desired point along the track the working range of the drill or reamer is vastly increased.

'What I claim as my invention isl. In combination, the hollow vertical column, the upper and lower carriages supporting the same, the intermediate wheel-chamber formed in said column, the shaft journaled in the column above said chamber, the horizontal swinging arm, the drill carried onv said arm, and the driving connections from the vertical shaft to the drill, substantially as described.

2. In combination, the hollow column, the supports for the same, the drill, the intermediate wheel-chamber in said columns the shaft j ournaled in the column above said chamber, and the bearing for the lower end of said shaft adjustable within said column.

VILLIAM HARTILL LAIV.y

Vitnesses:

B. BOYD, H. G. S. YOUNG.

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