US1975873A - Mounting for drilling mechanism - Google Patents

Description

Oct. 9, 1934. w. A. SMITH, SR., ET AL MOUNTING FOR DRILLING MECHANISM Filed June 6, 1932 THEIR/1 TTORNE Y Patented Oct. 9, 19324 Ares MOUNTING Fon nRrLLING MECHANISM 'wiiiiam A.v smith, sr., nesten, Pa, ami William' A. Smith, Jr., Phillipsburg, N. J., assignors to Ingersoll-Rand Company, Jersey City, N. J., a corporation of New Jersey i Application .lune `6, 1932, Serialy No. -615,526

"1 Claim. (Cl. Z55-51) This invention relates to mountingsbut more particularly to mountings for drills of the coal pick type equipped with means for advancing the drill in the direction of the work and for effectr ing withdrawal of the drill from the work.

One object of the invention is to protect the operator of tools of this character against the jars and shocks incident to drilling.

Another object is to enable the drilling mech- Lanism to be conveniently shifted along the work without requiring repeated shifting of the mounting.

Still another object is to enable the drilling mechanism to be shifted to an infinite Variety of positions with respect to the mounting.

Other objects will be in part obvious and in part pointed out hereinafter.

In the accompanying drawing illustrating the invention and in which similar reference characters refer to similar parts,

Figure 1 is a side elevation of a mounting constructed in accordance with the practice of the invention and a drilling mechanism supported thereby, both of which are partly broken away,

Figure 2 is a plan view of the mounting,

Figure 3 is a transverse view taken through Figure 2 on the line 3 3 looking in the direction indicated by the arrows, and

Figure 4 is a perspective view of a detail.

Referring more particularly to the drawing, A designates the mounting and B a drilling mechanism supported thereby. The drilling mechanism selected for purposes of illustration comprises a percussive motor C, of the coal pick type,

i adapted to actuate a working implement D into the material E. The motor C is supported by a rod F of a piston G reciprocable within a feeding cylinder H to which the pressure fluid employed for actuating the piston G is supplied by the hose J leading from a suitable source of pressure fluid supply.

The mounting A, constructed in accordance with the practice of the invention, comprises a bar K to the ends of which are secured crossheads L for supporting the bar and the drilling mechanism B. The crossheads L are adjustable longitudinally of the bar K and have apertures O to receive the bar K and adjacent the apertures O are clamp members P suitably spaced with respect to each other and having bolts Q extending therethrough for clamping said members securely to the bar K.

Adjacent the ends of the crossheads L are bores R to receive legs S which are adjustable in f the bores R to raise or lower the mounting with respect'to the work.y The portions 'of the legs S which seat upon the material E are in the formv of pointers T to engage the material and thus retain the mounting in xed position.

- Preferably the legs S are tapered in the direction of the upper ends thereof to provide tapered seating surfaces U for locking screws V threaded into the ends of the crossheads L.

Disposed upon the bar K, to rotate freely thereon, is a bearing W having a bore Y to receive the bar K. In the side of the bearing W is a slot Z which opens into the bore Y and on opposite sides of the slot Z are wings b and c through which extends a bolt d having a nut e whereby pressure may be applied to the wings b and c for either clamping the bearing W to the bar K, or for suppo-rting the Wings b and c to prevent spreading thereof in such instances of usage as where the bearing is required to rotate about the bar K.

In the portion of the bearing W opposite to that containing the bolt d is a bore f arranged at right angles to the bore Y to accommodate a shaft g having a clamp member or head h which may be an integral part of the shaft g. Within the head h is a bore y' to receive the feeding cylinder H. The head h is split longitudinally at one side and has a bolt 7c extending therethrough for drawing the opposite sides of the head tightly against the feeding cylinder H. For this purpose the bolt is provided with a nut o having a handle p to facilitate manipulation of the nut on the bolt.

The shaft g is preferably freely rotatable within the bore f to enable the drilling mechanism to be oscillated or rocked to any desired position with respect to the bearing W. In order to assure against the application of a binding Vpressure to the shaft g the shaft is slightly longer than the bore f and is provided with a reduced threaded extension q upon which is arranged a washer r to seat against a shoulder s at the juncture of the main body portion of the shaft g and the threaded portion q. A nut t threaded on the extension q locks the washer r firmly against the shoulder s.

Suitable means may be provided for holding the bearing W in any desired position along the length of the bar K. The means illustrated consists of a stop member or members u disposed on the bar K and on opposite sides of the bearing. Each stop member comprises a pair of semi-circular collar portions v and w which are bored to conform to the periphery of the bar K and are pivotally connected together at one end by means ably adjusted for height, the bearing W may ben disposed in the desired position along the length:

of the bar K and the stop members u be clamped on opposite sides thereof to prevent movement of the bearing,jr and consequently the drilling. Y mechanism along the bar during thegdrilling. operation. The-nut e may be tightened on the:

bolt d to prevent spreadingv of thejwings b and c of the bearing Without, however, springing the bearing: or clamping it against the bar-K," thus permitting the bearing to be freely oscillated about the longitudinal axis of the bar so that if it be desired to. drill an inclined hole the drilling mechanism may be readily tilted to the required position. In the event that it be desired to drill a series of holes in the same horizontal plane and from a single setting of the bea-ring on the bar K the head h may be rotated in a horizontal plane, either to the right or the left of the bearing, for this purpose.

From the disclosure and the foregoing description it will be apparent that the present invention Vprovides a convenient means for supporting a A mounting for drilling mechanism, compris- Y ing a horizontal bar, adjustable support means spaced along the length of the bar and being adjustable longitudinally thereon, clamping devices on the support means for securing the said support meanszxedly to the bar, a bearing slidable on the bar and being freely rotatable about the longitudinal axis of the bar, a clamp member to engage the drilling mechanism, a shaft on the clamp member loosely journalled in the bearing to enable the drilling mechanism tc be freely rotated through a plane transverse to the plane of rotation of the bearing, and stop means clamped to the bar. to act as abutments for the bearing,

YWILLIAM A. SMITH, SR. WILLIAM A. SMITH, JR.

Images